HomeMy WebLinkAboutReso 183-2023 (File 23-994)Initial Study and Mitigated Negative
Declaration for the Orange Memorial
Park Aquatic Center Project,
South San Francisco, California
SEPTEMBER 8, 2023 (FINAL)
PREPARED FOR
City of South San Francisco
PREPARED BY
SWCA Environmental Consultants
INITIAL STUDY/MITIGATED NEGATIVE DECLARATION
FOR THE ORANGE MEMORIAL PARK
AQUATIC CENTER PROJECT,
SOUTH SAN FRANCISCO, CALIFORNIA
Prepared for
City of South San Francisco
400 Grand Avenue
South San Francisco, California 94083
Attn: Phillip Vitale, Jr.
Deputy Director of Capital Projects
Prepared by
SWCA Environmental Consultants
60 Stone Pine Road, Suite 100
Half Moon Bay, California 94019
(650) 440-4160
www.swca.com
SWCA Project No. 78620
September 8, 2023 (FINAL)
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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CONTENTS
1 Introduction .......................................................................................................................................... 1
1.1 Project Location ........................................................................................................................ 1
1.2 Existing Conditions ................................................................................................................... 1
2 Project Description ............................................................................................................................... 4
2.1 Proposed Building Characteristics ............................................................................................ 4
2.2 Site Access, Parking, and Vehicle Circulation .......................................................................... 4
2.3 Recreation and Landscaping ..................................................................................................... 6
2.4 Utilities ...................................................................................................................................... 6
2.5 Construction .............................................................................................................................. 8
2.6 Required Discretionary Approvals ............................................................................................ 9
3 Environmental Checklist and Environmental Evaluation .............................................................. 10
I. Aesthetics ................................................................................................................................ 11
II. Agriculture and Forestry Resources ........................................................................................ 15
III. Air Quality ............................................................................................................................... 17
IV. Biological Resources ............................................................................................................... 23
V. Cultural Resources .................................................................................................................. 28
VI. Energy ..................................................................................................................................... 31
VII. Geology and Soils ................................................................................................................... 32
VIII. Greenhouse Gas Emissions ..................................................................................................... 36
IX. Hazards and Hazardous Materials ........................................................................................... 39
X. Hydrology and Water Quality ................................................................................................. 46
XI. Land Use and Planning ............................................................................................................ 52
XII. Mineral Resources ................................................................................................................... 53
XIII. Noise ........................................................................................................................................ 54
XIV. Public Services ........................................................................................................................ 60
XV. Recreation ................................................................................................................................ 62
XVI. Transportation ......................................................................................................................... 63
XVII. Tribal Cultural Resources ........................................................................................................ 66
XVIII. Utilities and Service Systems .................................................................................................. 69
XIX. Wildfire ................................................................................................................................... 74
XX. Mandatory Findings of Significance ....................................................................................... 76
4 References ........................................................................................................................................... 79
Appendices
Appendix A. CalEEMod - SSF Orange Memorial Park Aquatic Center Detailed Report
Appendix B. Cultural Resources Technical Report for the Orange Memorial Park Aquatic Center
Replacement Project
Appendix C. Orange Memorial Park Aquatic Center Trip Generation and VMT Assessment, Kittleson &
Associates, June 21, 2023
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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Figures
Figure 1. Project location. ............................................................................................................................. 2
Figure 2. Project vicinity and disturbance area. ............................................................................................ 3
Figure 3. Illustrative site plan. ...................................................................................................................... 5
Figure 4. Landscaping plan with stormwater LID ........................................................................................ 7
Figure 5a. East side of existing Aquatic Center from parking lot. .............................................................. 12
Figure 5b. East entrance to existing Aquatic Center. .................................................................................. 12
Figure 5c. West side of existing Aquatic Center with playground. ............................................................ 12
Figure 5d. South side of existing Aquatic Center with soccer fields. ......................................................... 12
Figure 6. San Francisco International Airport, Airport Influence Areas. ................................................... 45
Tables
Table 1. Project Consistency with General Plan Policies ........................................................................... 14
Table 2. Estimated Construction Schedule, Equipment and Vehicle Trips ................................................ 20
Table 3. Estimated Maximum Daily Construction Criteria Air Pollutant Emissions ................................. 21
Table 3. Noise Level Standards .................................................................................................................. 54
Table 4. Typical Construction Equipment Noise Levels ............................................................................ 56
Table 5. Trip Generation ............................................................................................................................. 65
Table 6. Water Supply and Demand Estimates for Normal Water Years In Acre Feet (DWR Table
7-2) ........................................................................................................................................... 72
Table 7. CalWater Water Supply and Demand Estimates for Multiple Dry Years (DWR Table 7-4) ....... 72
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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1 INTRODUCTION
This section of the Initial Study provides a description of the Orange Memorial Park Aquatic Center
Project (proposed project) and describes the location, surrounding land uses, existing conditions, and
project components.
1.1 Project Location
The City of South San Francisco (City) lies within San Mateo County in the San Francisco Bay Area.
The City is located approximately 3 miles north of San Francisco International Airport and the City of
San Bruno, just south of Daly City, Colma, and San Bruno Mountain, approximately 6 miles east of
Pacifica, and west of the waters of San Francisco Bay.
The 6.5-acre project site (APN 014-041-160) is located at 1 West Orange Avenue in South San Francisco,
California (Figure 1). The project site is located within the larger 26.9-acre Orange Memorial Park, the
largest developed park within the City and managed by the City’s Parks and Recreation Department.
The project site is bounded by Tennis Drive to the north, W. Orange Avenue to the east, and Orange
Memorial Park to the south and west (see Figure 1; Figure 2).
1.2 Existing Conditions
The Orange Memorial Pool Aquatic Center was constructed in 1970 and is the City’s only indoor
municipal swimming pool. The existing 11,840-square foot, single-story, six-lane pool building is located
within the northeast portion of Orange Memorial Park. In addition to the Orange Pool, the 26.9-acre
Orange Memorial Park contains the 21,600-square-foot Joseph A. Fernekes Recreation Building, a
community arts building, multiple soccer fields, five tennis courts, basketball courts, ball fields, bocce
ball courts, a skate park, two playgrounds, and picnic areas.
The primary parking lot for the Aquatic Center is located at the corner of Tennis Drive and W. Orange
Avenue. This lot contains 22 vehicle parking spaces. A larger parking lot, which serves the Aquatic
Center and various uses in Orange Memorial Park, is located northwest of the Aquatic Center, between
Tennis Drive and Circle Court. This lot contains 144 vehicular spaces. In addition, an overflow parking
lot with 55 vehicle parking spaces is located north of the Aquatic Center, across Tennis Drive.
The City recently completed construction of the Orange Memorial Park Stormwater Capture Project in the
southern portion of the park. With this project, runoff will be captured by an instream diversion and pre-
treatment structure (trash screen and sediment removal chamber) at the upper end of the Colma Creek
flood control channel within the park. Pretreated water will then enter a diversion pipe leading to an
underground stormwater storage reservoir. A portion of the storage facility will function as a cistern,
holding water for eventual non-potable irrigation use in the park and for water trucks, and the remainder
will function as an infiltration chamber to recharge groundwater in the Westside Groundwater Basin.
These storage facilities are being constructed underneath a portion of the existing baseball and softball
fields, which will be reconstructed in place as part of the stormwater capture project.
The ground surface across the park is relatively level, with elevations varying from about 25 to 29 feet
above mean sea level.1
1 Ninyo & Moore, Geotechnical Evaluation, Orange Memorial Park Aquatic Center, 1 West Orange Avenue, South San
Francisco, California.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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Figure 1. Project location.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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Figure 2. Project vicinity and disturbance area.
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2 PROJECT DESCRIPTION
The proposed project includes demolition of the existing Orange Memorial Pool facility, the associated
parking lot, and a portion of the existing recreational grass soccer field area and the construction of a new
aquatic center. The new center would contain separate indoor and outdoor pools and amenity space, the
relocated Eternal Flame sculpture into a new Veterans Memorial Plaza, a new parking lot with drop-off
area, and associated walkways with new landscaping.
2.1 Proposed Building Characteristics
The project would demolish the existing 22-space parking lot and a portion of existing grass soccer fields
in the northeast portion of Orange Memorial Park along W. Orange Avenue and construct a new 23,070-
square-foot aquatic center southeast of the existing Orange Memorial Pool. The facility would include a
new building with an indoor pool and an attached outdoor pool. The single-story facility for the indoor
pool would be approximately 30 feet in height and would contain an approximately 5,200-square foot,
seven-lane indoor pool with a surrounding 2,920-square-foot pool deck. The pool would contain a volume
of 173,264 gallons. Separate men’s, women’s, and family locker/changing rooms and restroom areas,
staff changing and restroom areas, approximately 400 square feet of office space, a 800-square-foot
activity room, and lobby, storage, and mechanical space would also be constructed within the new center.
An approximately 6,287-square-foot, 10-lane outdoor pool with a volume of 283,956 gallons would be
constructed adjacent to the center and to the south. The outdoor pool would have a surrounding 3,240-
square-foot pool deck, pool storage, and bleachers and would be fenced by 15-foot-tall composite wood
fencing (Figure 3).
The proposed exterior materials for the aquatic center include painted cement plaster and composite wood
cladding, with accent exterior glass detailing. The exterior materials palette primarily consists of a pre-
finished “weathered steel” metal panel, composite wood cladding, and glazing. The proposed metal panel
would be complementary to the color palette of the adjacent James A. Fernekes Building. In addition, the
project would incorporate blue and aqua accent colors which are sprinkled throughout the building in the
form of blue accent glazing, aqua colored cement plaster, and aqua colored signage. The exterior pool
metal fencing would be painted dark bronze.
2.2 Site Access, Parking, and Vehicle Circulation
The proposed project would construct the new aquatic center on the location of the existing 22-space
parking lot. Once the new aquatic center is built, a new 13-space parking lot would be constructed in the
location of the demolished pool, with access from Tennis Drive. Therefore, the project would shift the
location of the existing Orange Pool parking lot and reduce the total vehicle parking spaces from 22 to
13 spaces for that primary lot. The 13 total spaces would include five Americans with Disabilities Act
(ADA)–accessible spaces, one ADA-accessible electric-vehicle (EV) space, and two EV spaces. Vehicle
ingress and egress into the parking lot would be provided from one-way driveways off Tennis Drive.
Implementation of the project would also include roadway and sidewalk frontage improvements along
Tennis Drive and new traffic calming measures, including pedestrian crossing signs, speed humps and
new striping, would be installed on either side of the mid-block crosswalk. Eight bicycle racks would be
installed for visitor use, and one interior bicycle rack would be available for staff use.
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Initial Study/Mitigated Negative Declaration
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2.3 Recreation and Landscaping
The project would remove a portion of the existing soccer field area, reducing the total area of grass field
by about 7,200 square feet. The remaining grass field would be temporarily fenced off and used for
construction staging and parking during project construction but would be returned to existing conditions
and improved for recreational use post-project, including soccer practices and games.
The project would remove approximately 34 existing trees on-site that are concentrated within the
location of the new aquatic center. Approximately 35 replacement trees of a variety of species would be
replanted throughout the site (Figure 4). The project would renovate and relocate the large Eternal Flame
sculpture to a newly created Veterans Memorial Plaza adjacent to the pedestrian walkway from the new
parking lot to the aquatic center. The plaza would also include seating, accent lighting, relocated Veterans
Memorial plaques, and a flagpole.
In addition to planting 35 trees, other landscaping elements would include low-water shrubs and grasses
(including coffeeberry, manzanita, lavender, fescue, and deergrass). Replacement Canary Island date
palms would be planted along Tennis Drive.
Three planting areas would be added on-site for stormwater retention and treatment and planted with
stormwater treatment grasses (California grey rush [Juncus patens] and Canyon prince wild rye [Leymus
condensatus]) (see Figure 4). These areas would encompass approximately 1,855 square feet of Low
Impact Development (LID) treatment areas. Stormwater would be routed through the LID stormwater
treatment areas, and excess stormwater would be directed to the stormwater system in W. Orange
Avenue.
2.4 Utilities
The project would replace and add new wastewater, water, and stormwater drainage throughout the
project site. A new 4-inch lateral and water meter connected to the water main on W. Orange Avenue
would be installed for potable and irrigation water supply. A new 6-inch water line and hydrant connected
to the main on W. Orange Avenue would run from W. Orange Avenue down Tennis Drive and be
installed adjacent to Tennis Drive at the northwest corner of the pool building. A new 8-inch sanitary
sewer would connect to the existing sanitary sewer line located at the southern end of the soccer fields,
west of W. Orange Avenue.
Four- to 16-inch stormwater drainage pipelines would be routed throughout the project site and overflow
lines would connect to the stormwater pipeline within W. Orange Avenue.
New electrical and communications lines would connect to existing vaults for the new building. Existing
electrical and communications lines would remain until demolition of the old pool building. Existing gas
line infrastructure would be removed.
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Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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2.5 Construction
Project construction is expected to begin in early 2024 and occur over a period of approximately
18 months. In addition to the area of project disturbance shown in Figure 2, the entirety of the recreational
fields extending southwest from the disturbance area would be fenced off from park use and available for
possible temporary construction parking and staging use. This staging area would extend to, but not
include, W. Orange Avenue, Colma Creek, the basketball courts, Joseph A. Fernekes Building, and the
adjacent playground. All or part of the construction staging area would be used to temporarily
accommodate equipment and vehicle parking and materials storage. No ground disturbance would occur
in the staging area. Before project completion, the grass and irrigation system would be repaired and
replaced, and the recreational field returned to its existing condition. Construction activities would be
phased as follows:
1. The site would be fenced, prepared and cleared in the vicinity of the easternmost parking lot and
sports field area. The existing parking lot would be demolished and regraded. Trenching for new
utilities would occur. Site grading activities would include raising the existing grade of the
building footprint in areas within the designated floodplain to elevate the new structure out of the
floodplain area.
2. The new aquatic center would be constructed, including utilities, sidewalks, and pathways
necessary for access. The existing aquatic center would remain operational while the new facility
is constructed.
3. Once the new pool building is operational, the existing pool building would be demolished and all
old utility infrastructure removed. Demolition of the existing aquatic center would occur over a 3-
month period. The site would be filled in and regraded for the new parking lot.
4. The new parking lot and Veterans Memorial plaza, with associated walkways, sidewalks, and
lighting, would be constructed. The Eternal Flame sculpture would be relocated. Traffic calming
measures on Tennis Drive would be installed, along with street and sidewalk improvements.
5. Construction activities would conclude with landscaping and final site work, including storm
drainage, irrigation facilities, and rehabilitation of the staging area.
Grading would include over-excavation of the pools and building foundations by approximately 2 to 3
feet, followed by laying rock and Geotech fabric for stability. Engineered fill, which could include up to
10 percent of native soils, would be added over the Geotech fabric and compacted prior to pouring
concrete.
Project construction would require approximately 9,700 cubic yards of soil to be removed from
excavation for foundations, pools, and geotechnical improvements. The excavated soil would be
analyzed, and if it is acceptable, approximately ten percent (970 CY) would be reused as fill and the
remaining 8,730 CY would be hauled off. If the soil is not acceptable as engineered fill, then the entire
9,700 CY would be hauled off and approximately 970 CY would be imported for fill in addition to the
importation of engineered fill. Fill would be required on-site to fill the existing pool excavation, level the
surface and underly the parking lot, and to build up parts of the building footprint so the grade is above
the flood zone where necessary. In addition to off hauling soils, demolition of the existing building and
hardscape will generate approximately 800 cubic yards of debris which would be off-hauled for recycling
or disposal. Thirty-four trees would also be removed and chipped. The estimated maximum depth of
excavation is anticipated to be approximately 12 feet below ground surface for both the pools and new
utilities. The project would reduce the pervious surface area from 56,925 square feet to 39,710 square feet
and increase the impervious surface area by 17,215 square feet to 55,800 square feet.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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Existing site materials would be recycled or reused following demolition, when feasible. Various recycled
materials would be used in construction, and durable, long-lasting exterior finish materials would be
incorporated throughout the project. Standard construction equipment, including excavators, graders,
tractors, loaders, and pavers, would be used during project construction. No pile driving is proposed.
Construction would take approximately 18 months to complete. Construction hours would be limited to
8:00 a.m. to 5:00 p.m., Monday through Friday. Activities may occur between 7:00 a.m. to 8:00 a.m. on
weekdays and 9:00 a.m. to 4:00 p.m. on Saturdays, but such activities would be limited to quiet activities
and would not involve engine-driven machinery. Although the City allows construction from 8:00 a.m. to
6:00 p.m. on Saturdays and 10:00 a.m. to 6:00 p.m. on Sundays, weekend construction is not anticipated
and would require permission from the City.
Access for construction would be from a temporary access gate on W. Orange Avenue. Construction
staging and materials staging would occur on-site, including the adjacent soccer fields. All work would
comply with the Regional Water Quality Control Board (RWQCB) Best Management Practices (BMPs)
for stormwater management.
Existing site materials would be recycled or reused following demolition, when feasible. Demolished
asphalt and concrete would be taken to an asphalt recycling facility.
2.6 Required Discretionary Approvals
This Initial Study/Mitigated Negative Declaration (IS/MND) provides environmental information and
analysis in compliance with the California Environmental Quality Act (CEQA), which is necessary for
City decision makers to be able to adequately consider the effects of the project. The City, as the CEQA
lead agency, has approval authority and responsibility for considering the environmental effects of the
project as a whole. The City is responsible for authorizing and approving the project.
The project is requesting approval of the following permits:
x Design Review permit
x Certification of CEQA document
x City Building permit and Youth, Parks and Community Enrichment approval
x Grading permit
x Tree removal permit
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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3 ENVIRONMENTAL CHECKLIST AND ENVIRONMENTAL
EVALUATION
ENVIRONMENTAL FACTORS POTENTIALLY AFFECTED
The proposed project could have a "Potentially Significant Impact" for environmental factors checked
below. Please refer to the attached pages for discussion on mitigation measures or project revisions to
either reduce these impacts to less than significant levels or require further study.
܆ Aesthetics ܆ Greenhouse Gas Emissions ܆ Public Services
܆ Agriculture and Forestry
Resources ܆ Hazards and Hazardous
Materials ܆ Recreation
܆ Air Quality ܆ Hydrology and Water Quality ܆ Transportation
܆ Biological Resources ܆ Land Use and Planning ܆ Tribal Cultural Resources
܆ Cultural Resources ܆ Mineral Resources ܆ Utilities and Service Systems
܆ Energy ܆ Noise ܆ Wildfire
܆ Geology and Soils ܆ Population and Housing ܆ Mandatory Findings of
Significance
ENVIRONMENTAL DETERMINATION
On the basis of this initial evaluation:
܆ I find that the proposed project COULD NOT have a significant effect on the environment, and a
NEGATIVE DECLARATION will be prepared.
܈ I find that although the proposed project could have a significant effect on the environment, there
will not be a significant effect in this case because revisions in the project have been made by or
agreed to by the project proponent. A MITIGATED NEGATIVE DECLARATION will be
prepared.
܆ I find that the proposed project MAY have a significant effect on the environment, and an
ENVIRONMENTAL IMPACT REPORT is required.
܆ I find that the proposed project MAY have a “potentially significant impact” or “potentially
significant unless mitigated” impact on the environment, but at least one effect 1) has been
adequately analyzed in an earlier document pursuant to applicable legal standards, and 2) has
been addressed by mitigation measure based on the earlier analysis as described on attached
sheets. An ENVIRONMENTAL IMPACT REPORT is required, but it must analyze only the
effects that remain to be addressed.
܆ I find that although the proposed project could have a significant effect on the environment,
because all potentially significant effects (a) have been analyzed adequately in an earlier EIR or
NEGATIVE DECLARATION pursuant to applicable standards, and (b) have been avoided or
mitigated pursuant to that earlier EIR or NEGATIVE DECLARATION, including revisions or
mitigation measures that are imposed upon the proposed project, nothing further is required.
Date:September 9, 2023 Signed:
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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I. Aesthetics
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Except as provided in Public Resources Code Section 21099, would the project:
(a) Have a substantial adverse effect on a scenic vista? ܈܆܈܆
(b) Substantially damage scenic resources, including, but
not limited to, trees, rock outcroppings, and historic
buildings within a state scenic highway?
܆܆܆܈
(c) In non-urbanized areas, substantially degrade the
existing visual character or quality of public views of
the site and its surroundings? (public views are those
that are experienced from publicly accessible vantage
point). If the project is in an urbanized area, would the
project conflict with applicable zoning and other
regulations governing scenic quality?
܆܆܈܆
(d) Create a new source of substantial light or glare
which would adversely affect day or nighttime views in
the area?
܆܆܈܆
Environmental Evaluation
a) Would the project have a substantial adverse effect on a scenic vista?
Less than Significant. A scenic vista generally provides focal views of objects, settings, or features of
visual interest, or panoramic views of large geographic areas of scenic quality, from a fixed vantage point
or linear corridor, such as a roadway or trail. A significant impact would occur if a project introduced
incompatible scenic elements within a field of view containing a scenic vista or substantially block views
of an existing scenic vista.
The project site is located in the northwest portion of the existing Orange Memorial Park on Tennis Drive
and W. Orange Avenue. It is surrounded by residential areas to the north and east, and park facilities to
the west and south. The project site currently contains an aquatic center with swimming pool, parking
areas, and soccer fields (see Figures 5a-5d). The existing aquatic center was built in 1970. There are no
designated scenic vistas visible from the project site, and the surrounding vicinity does not contain any
designated historic buildings, rock outcroppings, or scenic highways. The nearest designated scenic
highway is Interstate Route 280, which is located approximately 1.3 miles west of the project site
(Caltrans 2023). Sign Hill, approximately 0.57 mile northeast of the site, is one of the most prominent
features visible from Orange Memorial Park. Sign Hill includes 65 acres of open space and almost 2 miles
of hiking trails with views of the San Francisco Bay (South San Francisco Parks Division 2023a). The
project site is visible from several viewing points on Sign Hill, as well as from neighborhoods on West
W. Orange Avenue and Tennis Drive and surrounding public streets. The project site is also visible from
areas in Orange Memorial Park, including the soccer fields, tennis courts, and playground, and is visible
in the distance from the Centennial Way bicycle and pedestrian trail, which is approximately 1,000 feet to
the southwest.
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Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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The proposed project would replace an existing indoor pool and a portion of the grass recreation (soccer)
fields with a new complex of two pools, one indoor and one outdoor, with ancillary facilities including
changing rooms and restrooms. The project would also replace the existing parking lot with a new,
smaller parking lot and would plant 35 trees surrounding the pool facilities and new parking area
(Figures 5a-d). The new pool building would be approximately 30 feet in height.
Due to the topography of the project site and relative lack of buildings on the site compared with the
surrounding urban development, view changes would typically occur at limited vantage points, as
opposed to along extensive roadway segments or from entire large geographic areas. Furthermore, the
new pool building would be one story and approximately 30 feet in height and integrate with the
surrounding urban development along Tennis Drive and W. Orange Avenue and the park setting of
Orange Memorial Park. The project would remove approximately 34 existing trees and would replant
approximately 35 trees throughout the project site. Thus, while the project would alter the existing visual
character of the project site, it would replace the existing pool and parking lot with similar updated
facilities including trees and landscaping, therefore the project would not adversely affect a scenic vista or
obstruct views of visual resources and this impact would be less than significant.
While the project site could be visible within panoramic views from Sign Hill, the project site contributes
to the existing urban setting of the area and would not be especially discernible among the surrounding
urban development. Therefore, implementation of the project would not have a substantial adverse effect
on a scenic vista and impacts would be less than significant.
Construction impacts would include excavation, grading, and ground disturbance; heavy equipment
operation and staging areas for equipment parking and material storage; and additional truck traffic on
haul routes. Construction would last approximately 18 months; therefore, short-term visual impacts due to
construction would be temporary and less than significant. No mitigation is required.
b) Would the project substantially damage scenic resources, including, but not
limited to, trees, rock outcroppings, and historic buildings within a state scenic
highway?
No Impact. The project site is not within a scenic highway corridor. The nearest designated scenic
highway is Interstate Route 280, approximately 1.3 miles west of the project area. The project area does
not have other scenic resources such as rock outcroppings or historic buildings (South San Francisco
2022a). Although the project would remove approximately 34 existing trees, it would replant
approximately 35 trees surrounding the pool buildings and facilities. Therefore, the project would not
substantially damage scenic resources, including those within a designated scenic highway. No impact
would occur.
c) In non-urbanized areas, would the project substantially degrade the existing
visual character or quality of public views of the site and its surroundings?
(public views are those that are experienced from publicly accessible vantage
point). If the project is in an urbanized area, would the project conflict with
applicable zoning and other regulations governing scenic quality?
Less than Significant. The project is located in an existing City park that has a zoning designation of
Parks and Recreation (PR) and a General Plan Land Use designation of Parks and Recreation. The project
would replace an existing public pool facility and a portion of existing soccer fields with a new public
pool complex. Therefore, it would not conflict with applicable zoning.
The existing building’s age and heavy use have resulted in very worn condition of the shell and interior.
Goal LU-10 of the 2040 General Plan identifies a goal of a high level of quality in the architecture and
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
14
site design of new construction. The exterior materials for the new aquatic center include pre-finished
“weathered steel” metal pane, painted cement plaster and composite wood cladding, with accent exterior
glass detailing. The exterior materials palette primarily consists of a pre-finished “weathered steel” metal
panel, composite wood cladding, and glazing. The proposed metal panel would be complementary to the
color palette of the adjacent Fernekes Building. In addition, the project would incorporate blue and aqua
accent colors sprinkled throughout the building in the form of blue accent glazing, aqua colored cement
plaster, and aqua colored signage.
The South San Francisco 2040 General Plan does not include a visual element; however, there are visual
and architectural guidelines under Chapter 5, Land Use and Community Design Element. Table 1
compares the project’s consistency with General Plan policies.
Table 1. Project Consistency with General Plan Policies
General Plan Policy Consistency
Policy LU-8.4: Require street trees. Require new development
to add street trees along streets and public spaces that provide
shade, attractive landscaping, and contribute positively
towards public health outcomes and climate mitigation and
adaptation.
Consistent. The project would plant 35 trees, including new
street trees along W. Orange Avenue and Tennis Drive.
Policy LU-8.8: Maintain and protect public views. Maintain and
protect unique public views of the city, the bay, and local
landmarks from major thoroughfares and hillside open spaces.
Consistent. The project would not impact public views. New
recreational facilities at Orange Memorial Park would integrate
and harmonize with the surrounding urban development and
would not be distinguishable from Sign Hill.
Policy LU-9.2: Encourage architectural and visual interest in
new development. Encourage distinctive architecture and
elements that add visual interest to buildings to enhance
people’s perceptions of South San Francisco as an interesting
and inviting place.
Consistent. The project would replace an aging pool facility
with a new pool complex. The new pool complex would be
constructed of metal panels, painted cement plaster, and
composite wood cladding, in colors that complement the
Fernekes Building, with exterior accents of aqua and blue in
glazing, cement plaster and signage, and would be visually
appealing.
Policy LU-9.3: Require quality building materials. Require high-
quality, long-lasting building materials on all new development
projects in the city.
Consistent. The project includes quality building materials,
glazing, and infrastructure.
Policy LU-9.4: Require walkable and inviting buildings and
spaces. Require building design that creates walkable and
inviting spaces, such as locating parking behind buildings,
allowing for outdoor plazas and dining, and locating building
frontages in close proximity to the sidewalk edge, where
appropriate.
Consistent. The new facilities would be integrated in the park
design and easily accessible both from the park and from
Tennis Drive. The project would reduce the overall number of
parking spaces but would provide more ADA parking close to
the building.
As shown in Table 1, the project would be consistent with all General Plan policies related to visual and
aesthetic impacts. Therefore, the project would not conflict with applicable zoning and other regulations
governing scenic quality and this impact would be less than significant.
d) Would the project create a new source of substantial light or glare which would
adversely affect day or nighttime views in the area?
Less than Significant. The project would include street and access lighting as required by the City, and
would meet all requirements of the City Zoning Code and applicable building codes. As required by
Section 20.3000.009 of the municipal code, all lighting fixtures would be fully shielded and located to
avoid light spillover to adjacent properties. Further, light fixtures would not exceed 25 feet in height, and
any light fixture located within 50 feet of a residence or public right-of-way would be further shielded to
minimize light trespass onto adjacent properties.
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Proposed window and selective door glazing would be tempered with a spectrally selective coasting to
provide the highest visible transmittance, lowest shading coefficient, and high ultraviolet (UV) radiation
blockage, therefore, the glass would not be highly reflective. Therefore, the project would not create a
new source of substantial light or glare which would adversely affect day or nighttime views in the area
and this impact would be less than significant.
II. Agriculture and Forestry Resources
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
In determining whether impacts to agricultural resources are significant environmental effects, lead agencies may refer to th e
California Agricultural Land Evaluation and Site Assessment Model (1997) prepared by the California Dept. of Conservation as
an optional model to use in assessing impacts on agriculture and farmland. In determining whether impacts to forest resources,
including timberland, are significant environmental effects, lead agencies may refer to information compiled by the Californi a
Department of Forestry and Fire Protection regarding the state’s inventory of forest land, including the Forest and Range
Assessment Project and the Forest Legacy Assessment project; and forest carbon measurement methodology provided in Forest
Protocols adopted by the California Air Resources Board. Would the project:
(a) Convert Prime Farmland, Unique Farmland, or
Farmland of Statewide Importance (Farmland), as
shown on the maps prepared pursuant to the
Farmland Mapping and Monitoring Program of the
California Resources Agency, to non-agricultural use?
܆܆܆܈
(b) Conflict with existing zoning for agricultural use, or a
Williamson Act contract? ܆܆܆܈
(c) Conflict with existing zoning for, or cause rezoning of,
forest land (as defined in Public Resources Code
section 12220(g)), timberland (as defined by Public
Resources Code section 4526), or timberland zoned
Timberland Production (as defined by Government
Code section 51104(g))?
܆܆܆܈
(d) Result in the loss of forest land or conversion of forest
land to non-forest use? ܆܆܆܈
(e) Involve other changes in the existing environment
which, due to their location or nature, could result in
conversion of Farmland, to non-agricultural use or
conversion of forest land to non-forest use?
܆܆܆܈
Environmental Evaluation
a) Would the project convert Prime Farmland, Unique Farmland, or Farmland of
Statewide Importance (Farmland), as shown on the maps prepared pursuant to the
Farmland Mapping and Monitoring Program of the California Resources Agency,
to non-agricultural use?
No Impact. The project is located in the City of South San Francisco in Orange Memorial Park, an urban
park, and surrounded by residential and commercial development. There is no agricultural or forest land
in the vicinity of the project. Historically, the project vicinity supported several greenhouses used by the
carnation-growing company Mazzanti Carnations, Inc., but operations ceased in 1996 when the land was
purchased by the City for the expansion of park facilities (City of South San Francisco 2007; 2023a). The
project site has a land use designation of Parks and Recreation in the City’s General Plan (City of South
San Francisco 2022a). The areas surrounding Orange Memorial Park are designated as High, Medium, or
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
16
Low Density Residential; no parcels within the project vicinity are zoned for agricultural use (City of
South San Francisco 2023b). No impacts to important farmland would occur.
b) Would the project conflict with existing zoning for agricultural use, or a
Williamson Act contract?
No Impact. The proposed project is located in a City park and is not under Williamson Act contract.
The surrounding area is not zoned for agricultural use or under Williamson Act contract. The project
would not conflict with existing zoning for agricultural use or Williamson Act contracts and no impact
would occur.
c) Would the project conflict with existing zoning for, or cause rezoning of, forest
land (as defined in Public Resources Code section 12220(g)), timberland
(as defined by Public Resources Code section 4526), or timberland zoned
Timberland Production (as defined by Government Code section 51104(g))?
No Impact. The proposed project is located in a City park and is not zoned for timberland or timberland
production. There project vicinity is urban, and there are no areas zoned for timber or timber production
in the City (City of South San Francisco 2023b, 2023c). No impact to timberland would occur.
d) Would the project result in the loss of forest land or conversion of forest land to
non-forest use?
No Impact. There is no forest land in the vicinity of the project (City of South San Francisco 2023b,
2023c). No impact would occur.
e) Would the project involve other changes in the existing environment which, due to
their location or nature, could result in conversion of Farmland, to non-
agricultural use or conversion of forest land to non-forest use?
No Impact. The project is located in a City park and the surrounding area includes urban uses. There is
no farmland or forest land in the vicinity of the project. The project would not result in the conversion of
farmland or forest land. No impact would occur.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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III. Air Quality
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Where available, the significance criteria established by the applicable air quality management district or air pollution control
district may be relied upon to make the following determinations. Would the project:
(a) Conflict with or obstruct implementation of the
applicable air quality plan? ܆܆܆܈
(b) Result in a cumulatively considerable net increase of
any criteria pollutant for which the project region is
non-attainment under an applicable federal or state
ambient air quality standard?
܆܆܈܆
(c) Expose sensitive receptors to substantial pollutant
concentrations? ܆܆܈܆
(d) Result in other emissions (such as those leading to
odors) adversely affecting a substantial number of
people?
܆܆܈܆
Environmental Evaluation
The proposed project is located within the San Francisco Bay Area Air Basin (Air Basin), which consists
of the entirety of Alameda, Contra Costa, Marin, Napa, San Francisco, San Mateo, and Santa Clara
Counties; the western portion of Solano County; and the southern portion of Sonoma County. The Air
Basin is characterized by complex terrain consisting of coastal mountain ranges, inland valleys, and bays.
The regional climate of the Air Basin is characterized by mildly dry summers and moderately wet
winters. The region experiences moderate humidity with wind patterns consisting of mild onshore breezes
during the day. The location of a strong subtropical high-pressure cell located in the Pacific Ocean
induces foggy mornings and moderate temperatures during the summer, as well as occasional rainstorms
during the winter. The air pollutants for which national and state standards have been promulgated and
that are most relevant to air quality planning and regulation in the Bay Area include ozone, nitrogen
oxides (NOX), carbon monoxide (CO), and particulate matter, including dust, 10 microns or less in
diameter (PM10) and 2.5 micrometers or less in diameter (PM2.5). In addition, toxic air contaminants
(TACs) are of concern in the Bay Area. Each of these pollutants is briefly described below:
x Ozone is a gas that is formed when reactive organic gases (ROG) and NOX—both byproducts of
internal combustion engine exhaust—undergo slow photochemical reactions in the presence of
sunlight. Ozone concentrations are generally highest during the summer months when direct
sunlight, light wind, and warm temperature conditions are conducive to its formation. Its effects
can cause irritated respiratory system, reduced lung function, breathing pattern changes, reduced
breathing capacity, inflamed and damaged cells that line the lungs, lungs to be more susceptible
to infection, permanent lung damage, some immunological changes, increased mortality risk, and
vegetation and property damage and aggravate asthma and other chronic lung diseases.
x CO is a colorless, odorless gas produced by the incomplete combustion of fuels. CO
concentrations tend to be the highest during winter mornings, with little to no wind, when
surface-based inversions trap the pollutant at ground levels. Because CO is emitted directly from
internal combustion engines—unlike ozone—and motor vehicles operating at slow speeds are the
primary source of CO in the Bay Area, the highest ambient CO concentrations are generally
found near congested transportation corridors and intersections. Potential health effects from CO
range depending on exposure: slight headaches, nausea, aggravation of angina pectoris (chest
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Initial Study/Mitigated Negative Declaration
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pain) and other aspects of coronary heart disease, decreased exercise tolerance in persons with
peripheral vascular disease and lung disease, impairment of central nervous system functions,
possible increased risk to fetuses, and death.
x PM10 and PM2.5 consist of extremely small, suspended particles or droplets 10 microns and
2.5 microns or smaller in diameter, respectively. Some sources of particulate matter, like pollen
and windstorms, are naturally occurring. However, in populated areas, most particulate matter is
caused by road dust, diesel soot, combustion products, abrasion of tires and brakes, and
construction activities. Health effects from short-term exposure (hours per days) can include the
following: irritation of the eyes, nose, and throat; coughing; phlegm; chest tightness; shortness of
breath; aggravation of existing lung disease, causing asthma attacks and acute bronchitis; and
those affected with heart disease can suffer heart attacks and arrhythmias. Health effects from
long-term exposure can include the following: reduced lung function, chronic bronchitis, changes
in lung morphology, and death.
x TACs refer to a diverse group of air pollutants that can affect human health but have not had
ambient air quality standards established for them. Diesel particulate matter (DPM) is a toxic air
contaminant that is emitted from construction equipment and diesel-fueled vehicles and trucks.
Some short-term (acute) effects of DPM exposure include eye, nose, throat, and lung irritation;
coughs; headaches; light-headedness; and nausea. Studies have linked elevated particle levels in
the air to increased hospital admissions, emergency room visits, asthma attacks, and premature
deaths among those suffering from respiratory problems. Human studies on the carcinogenicity of
DPM demonstrate an increased risk of lung cancer, although the increased risk cannot be clearly
attributed to diesel exhaust exposure.
Other pollutants that are regulated but not considered an issue in the project area are sulfur dioxide, vinyl
chloride, sulfates, hydrogen sulfide, and lead; the proposed project would not emit substantial quantities
of those pollutants, so they are not discussed further in this section.
Clean Air Plan Control Measures. The applicable air quality plan is the Bay Area Air Quality
Management District (BAAQMD) 2017 Clean Air Plan (Clean Air Plan), which was adopted on April 19,
2017. The Clean Air Plan defines control strategies to reduce emissions and ambient concentrations of air
pollutants; safeguard public health by reducing exposure to air pollutants that pose the greatest health
risk; and reduce greenhouse gas emissions to protect the climate. The control strategies of the Clean Air
Plan include measures in the following categories: Stationary Source Measures, Transportation Measures,
Energy Measures, Building Measures, Agriculture Measures, Natural and Working Lands Measures,
Waste Management Measures, Water Measures, and Super-Greenhouse Gas (GHG) Pollutants Measures.
There are two categories of control measures that are applicable to the project – Transportation Control
Measures and Waste Management Control Measures. The remainder do not apply to the project. The
proposed project’s compliance with these control strategies is discussed under III (b) below.
Transportation Control Measures. The BAAQMD identifies Transportation Measures as part of
the Clean Air Plan to decrease emissions of criteria pollutants, TACs, and GHGs by reducing
demand for motor vehicle travel, promoting efficient vehicles and transit service, decarbonizing
transportation fuels, and electrifying motor vehicles and equipment.
Waste Management Control Measures. The Waste Management Measures focus on reducing or
capturing methane emissions from landfills and composting facilities, diverting organic materials
away from landfills, and increasing waste diversion rates through efforts to reduce, reuse, and
recycle.
Construction and operation of the proposed project would be subject to applicable BAAQMD rules and
requirements. The BAAQMD CEQA Thresholds and Guidelines were developed to assist local
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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jurisdictions and lead agencies in complying with the requirements of CEQA regarding potentially
adverse impacts to air quality. The screening criteria established by the BAAQMD CEQA Thresholds and
Guidelines dated April 2022 have been relied upon to make the following significance determinations.
a) Would the project conflict with or obstruct implementation of the applicable air
quality plan?
No Impact. The 2017 Clean Air Plan is the current applicable regional Air Quality Plan (AQP) for the
Air Basin (BAAQMD 2017). The primary goals of the 2017 Clean Air Plan are to protect public health
and protect the climate, and the plan acknowledges that the BAAQMD’s two stated goals of protection
are closely related. As such, the 2017 Clean Air Plan identifies a wide range of control measures intended
to decrease both criteria pollutants and greenhouse gas (GHG) emissions. Because the proposed project
does not involve population or employment growth, determining consistency with the 2017 Clean Air
Plan involves assessing whether applicable control measures contained in the 2017 Clean Air Plan are
implemented and whether implementation of the proposed project would disrupt or hinder
implementation of AQP control measures. The control measures are organized into five categories:
(1) stationary and area source control measures; (2) mobile source measures; (3) transportation control
measures; (4) land use and local impact measures; and (5) energy and climate measures. The control
measures are geared toward traditional land uses (e.g., residential, commercial, industrial uses) and
buildings. All projects within BAAQMD’s jurisdiction are required to implement the BAAQMD BMPs
during construction activities. As discussed in III (b), below, the proposed project would implement all
required BMPs for construction activities and would be consistent with the assumptions in the AQP.
Furthermore, the proposed project would not include any special features that would disrupt or hinder
implementation of the AQP control measures. Therefore, the proposed project would not obstruct
implementation of the 2017 Clean Air Plan and no impact would occur.
b) Would the project result in a cumulatively considerable net increase of any criteria
pollutant for which the project region is non-attainment under an applicable
federal or state ambient air quality standard?
Less than Significant. The BAAQMD’s thresholds of significance represent the allowable emissions a
project can generate without generating a cumulatively considerable contribution to regional air quality
impacts. Therefore, a project that would not exceed the BAAQMD thresholds of significance on a project
level also would not be considered to result in a cumulatively considerable contribution to these regional
air quality impacts. The region is non-attainment for the federal and state ozone standards, state PM10
standards, and federal and state PM2.5 standards. Impacts related to construction and operation of the
proposed project are addressed separately below.
CONSTRUCTION
Emissions from construction-related activities are generally short term in duration but may still cause
adverse air quality impacts. The proposed project would generate emissions from construction equipment
exhaust, worker travel, and fugitive dust. These construction emissions include criteria air pollutants and
precursors from the operation of heavy construction equipment. As discussed below, the proposed
project’s construction emissions would not exceed any significance threshold adopted for this project .
Therefore, the proposed project would have a less-than-significant contribution to cumulative impacts
during construction.
For all proposed projects, the BAAQMD recommends the implementation of BMPs, whether or not
construction-related emissions exceed applicable thresholds of significance. As such, to ensure
construction emission impacts are less than significant, the proposed project would apply the following
BAAQMD BMPs during construction activities at the proposed project site:
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x Exposed surfaces (e.g., parking areas, staging areas, soil piles, graded areas, unpaved access
roads) shall be watered with non-potable water two times per day.
x All haul trucks transporting soil, sand, or other loose material off-site shall be covered.
x All visible mud or dirt track-out onto adjacent public roads shall be removed using wet power
vacuum street sweepers at least once per day. The use of dry power sweeping is prohibited.
x All roadways, driveways, and sidewalks shall be paved as soon as possible.
x Idling times shall be minimized either by shutting equipment off when not in use or by reducing
the maximum idling time to 5 minutes (as required by the California Airborne Toxics Control
Measure in Title 13, Section 2485 of the California Code of Regulations [CCR]). Clear signage
shall be provided for construction workers at all access points.
x All construction equipment shall be maintained and properly tuned in accordance with
manufacturer’s specifications. All equipment shall be checked by a certified visible emissions
evaluator.
x A publicly visible sign shall be posted with the telephone number and person to contact at the
City regarding dust complaints. This person shall respond and take corrective action within
48 hours of a complaint or issue notification. The BAAQMD’s phone number shall also be visible
to ensure compliance with applicable regulations.
Construction emissions associated with the proposed project, including emissions associated with the
operation of off-road equipment, haul-truck trips, on-road worker vehicle trips, vehicle travel on paved
and unpaved surfaces, and fugitive dust from material handling activities, were calculated using the
current California Emissions Estimator Model (CalEEMod) version 2022.1. CalEEMod is a statewide
land use emissions computer model designed to provide a uniform platform for government agencies,
land use planners, and environmental professionals to quantify potential criteria pollutant and GHG
emissions associated with both construction and operation of a variety of land use projects. Emissions
modeling included emissions generated during the following project phases: demolition (including
demolition of the existing parking lot and pool building and removal of old utilities), site preparation
(including grading and grubbing, and utility trenching), building construction (including construction of
pool building, outdoor pool, parking lot, paths and sidewalks, street improvements), and architecture
coating. Based on applicant-provided information, it is expected that construction activities associated
with the proposed project would last 18 months. Table 2 shows the construction schedule, off-road
construction equipment, worker and vendor trips, and on-site haul truck trips used to estimate emissions.
Table 3 shows estimated air pollutant emissions. The exhaust emissions generated by construction
equipment are based on the hours of operation, horsepower, and load factors of the equipment for which
CalEEMod defaults were utilized. The detailed assumptions and calculations, as well as CalEEMod
outputs, are provided in the Air Quality and Greenhouse Gas Technical Report (SWCA 2023) prepared
for the project, which is included in Appendix A.
Table 2. Estimated Construction Schedule, Equipment and Vehicle Trips
Phase Construction
Schedule
Construction Equipment Number of
Workers
Haul, Vendor &
Onsite truck trips/day
Demolition of Parking lot January 2024
20 work days
Tractors/loaders/backhoes
Rubber tired dozers
Concrete/Industrial saws
30 11
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Phase Construction
Schedule
Construction Equipment Number of
Workers
Haul, Vendor &
Onsite truck trips/day
Site preparation Jan-Feb 2024
23 work days
Graders
Rubber-tired dozers
Tractors/loaders/backhoes
30 7
Grading March-April 2024
43 work days
Graders
Rubber-tired dozers
Tractors/loaders/backhoes
30 7
Building Construction May 2024-Jan 2025
200 work days
Cranes
Forklifts
Generators
Tractors/loaders/backhoes
Welders
30 9
Demolition of Center Feb-April 2025
64 work days
Tractors/loaders/backhoes
Rubber tired dozers
Concrete/Industrial saws
30 23
Paving and Landscaping May-June 2025
40 work days
Tractors/loaders/backhoes
Pavers
Paving equipment
Rollers
Cement and mortar mixers
20 3
Architectural coating June 2025
21 work days
Air compressors 10 0
Source: CalEEMod version 2022.1.1.14 (see Appendix C); BAAQMD (2022)
Table 3. Estimated Maximum Daily Construction Criteria Air Pollutant Emissions
ROG NOx PM10 PM2.5 SO2 Fugitive Dust
Pounds per Day
Construction Emissions (Unmitigated) 12.5 16.6 8.74 3.64 0.04
Construction Emissions (Mitigated) 12.5 16.6 4.37 1.45 0.04
BAAQMD Threshold 54 54 82 54 N/A BMPs
Threshold Exceeded? No No No No No
Source: CalEEMod version 2022.1.1.14 (see Appendix C); BAAQMD (2022)
OPERATION
Long-term air pollutant emissions from operation of the new pool complex would primarily be those
associated with mobile sources s (e.g., vehicle trips), energy sources (e.g., electricity – the project would
not include natural gas), and area sources (e.g., architectural coatings and the use of landscape
maintenance equipment) related to the proposed project. Vehicles traveling on paved roadways result in
PM10 emissions from vehicle exhaust, tire and break wear, and dust thrown into the atmosphere. Energy
source emissions from building mechanical systems such as pool filters and disinfection systems, lighting,
heating and cooling, and plug-in electronics such as computers. Typically, area source emissions consist
of direct sources of air emissions located at the project site, including architectural coatings and the use of
landscape maintenance equipment. Area source emissions associated with the project would include
emissions from the use of landscaping equipment and the use of consumer products.
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Transportation Control Measures. The proposed project would replace an existing parking lot and pool
building in Orange Memorial Park with a new pool facility and parking lot. Although the proposed
project would result in a net increase in the number of vehicle trips due to increased pool programs,
it would result in a net decrease in vehicle miles traveled (VMT) by expanding pool services and
programs to serve South San Francisco residents so those residents would not have to travel to facilities in
other cities (see Section 3.XVI, Transportation). The new pool facility would be located near residential
areas and on a transit line, and would include bicycle parking facilities, which would help to reduce the
demand for travel by single occupancy vehicles. Therefore, the project would promote BAAQMD
initiatives to reduce vehicle trips and VMT and this impact would be consistent with the Transportation
Control Measures.
Waste Management Control Measures. The project would comply with local requirements for waste
management (e.g., recycling and composting services). Therefore, the project would be consistent with
the Waste Management Control Measures of the Clean Air Plan.
The project would replace an aquatic center built in 1970. The project would remove existing natural gas
infrastructure. The new facility would be all-electric, using no natural gas, which would reduce energy
source emissions compared to the existing aquatic center. Although the project would increase pool
capacity from one to two pools, and from six to 17 lanes, the new building and systems would be more
energy efficient and would include rooftop solar panels to further defray energy source emissions.
Electricity for South San Francisco is purchased from Peninsula Clean Energy, which purchases energy
from renewable sources, minimizing energy source emissions (City of South San Francisco 2023d). The
use of landscape maintenance equipment would not change appreciably over existing conditions.
Architectural coatings would meet all applicable standards for air emissions. Therefore, the proposed
project would have a less-than-significant contribution to cumulative air quality impacts during operation.
c) Would the project expose sensitive receptors to substantial pollutant
concentrations?
Less than Significant. The BAAQMD considers a sensitive receptor to be any facility or land use that
includes members of the population who are particularly sensitive to the effects of air pollutants, such as
children, the elderly, and people with illnesses. The project is located in a public park surrounded by
residential areas. The BAAQMD CEQA Air Quality Guidelines (BAAQMD 2022) recommends
assessment of risks and hazards on sensitive receptors within 1,000 feet of the project. Existing sensitive
receptors within this radius include residences on Tennis Drive, Circle Court, Amberwood Court,
Idlewood Drive, Idlewood Court, Mahogany Drive, Bay Court, Railroad Avenue, Commercial Avenue,
1st Lane, 2nd Lane, 3rd Lane, Baden Avenue, Eucalyptus Avenue, W. Orange Avenue, Mayfair Avenue,
Toyon Avenue, Mulberry Avenue, and Myrtle Avenue, as well as recreational users of Orange Memorial
Park facilities including the Joseph A. Fernekes Building, playing fields, outdoor tennis courts, the skate
park, and play structures. Short-term (18 months) construction activities could result in temporary
increases in pollutant concentrations. The limited duration and limited quantities of construction
emissions ensure that no individual receptor would be exposed to substantial pollutant concentrations.
During construction, the BAAQMD BMPs would minimize construction impacts by reducing dust and
exhaust emissions. Therefore, construction of the project would not expose sensitive receptors to
substantial pollutant concentrations, and impacts would be less than significant.
Operations of the pool complex as a result of the project would not change appreciably. As discussed
above, the new pool complex would be more efficient in energy use, reducing operational emissions.
Emissions from transportation would increase in the immediate vicinity due to an increase in the number
of vehicle trips; however, it is likely that City residents are currently using pools in other jurisdictions that
are further away. Expanding the Orange Pool facilities would provide additional classes and opportunities
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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for recreational swimmers closer to the city to better meet the demand from City residents. Therefore, the
overall air emissions generated by traffic would decrease, as the project would cause a decrease in VMT
by shortening vehicle trips for residents of South San Francisco. The project would also provide three EV
charging stations in the new parking lot, promoting the use of electric vehicles. Therefore, construction
and operation of the project would not expose sensitive receptors to substantial pollutant concentrations,
and impacts would be less than significant.
d) Would the project result in other emissions (such as those leading to odors)
adversely affecting a substantial number of people?
Less than Significant. The BAAQMD defines a significant impact related to odors as more than five
confirmed odor complaints per year averaged over the past three years (BAAQMD 2022). The proposed
project would include the use of pool chemicals; however, any localized odors associated with pool
operation would be confined mainly to the project site and would readily dissipate. As such, operation of
the proposed project is not expected to produce any offensive odors that would result in frequent odor
complaints. During construction, a limited number of diesel engines would be operated on the project site
for limited durations. Diesel exhaust and volatile organic compounds (VOCs) from these diesel engines
would be emitted during construction of the proposed project, which are objectionable to some; however,
the duration of construction activities is expected to last approximately 18 months, emissions would
disperse rapidly from the project site, and diesel exhaust odors would be consistent with existing vehicle
odors in the area. Considering this information, construction and operation of the proposed project would
not create other emissions or odors adversely affecting a substantial number of people; impacts would be
less than significant.
IV. Biological Resources
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Have a substantial adverse effect, either directly or
through habitat modifications, on any species
identified as a candidate, sensitive, or special status
species in local or regional plans, policies, or
regulations, or by the California Department of Fish
and Game or U.S. Fish and Wildlife Service?
܆܆܆܈
(b) Have a substantial adverse effect on any riparian
habitat or other sensitive natural community identified
in local or regional plans, policies, regulations or by
the California Department of Fish and Game or US
Fish and Wildlife Service?
܆܆܆܈
(c) Have a substantial adverse effect on state or federally
protected wetlands (including, but not limited to,
marsh, vernal pool, coastal, etc.) through direct
removal, filling, hydrological interruption, or other
means?
܆܈܆܆
(d) Interfere substantially with the movement of any
native resident or migratory fish or wildlife species or
with established native resident or migratory wildlife
corridors, or impede the use of native wildlife nursery
sites?
܆܈܆܆
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
24
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
(e) Conflict with any local policies or ordinances
protecting biological resources, such as a tree
preservation policy or ordinance?
܆܆܈܆
(f) Conflict with the provisions of an adopted Habitat
Conservation Plan, Natural Community Conservation
Plan, or other approved local, regional, or state
habitat conservation plan?
܆܆܆܈
Environmental Evaluation
a) Would the project have a substantial adverse effect, either directly or through
habitat modifications, on any species identified as a candidate, sensitive, or
special status species in local or regional plans, policies, or regulations, or by the
California Department of Fish and Game or U.S. Fish and Wildlife Service?
No Impact. The project site includes 6.5 acres of the northeastern portion of Orange Memorial Park and
encompasses the existing Orange Pool, a parking lot, and some of the existing soccer fields (see Figure 2
in Chapter 1, Project Description). In addition, the project would include the use of additional soccer
fields as a staging and parking area. Located in an urbanized area, the project site is surrounded by
residential areas and City park facilities. Colma Creek, approximately 400 feet southwest of the project
disturbance area, and approximately 40 feet southwest of the staging and parking area, is a perennial
creek that flows to San Francisco Bay and consists of a vertical and trapezoidal-shaped concrete drainage
with concrete channel walls and bed.
The project topography is primarily level, with elevations from 24 to 29 feet above mean sea level.
The current landscape is dominated by the existing aquatic center and associated parking lot, a large
soccer field to the southwest, a playground to the east, and scattered ornamental trees throughout the site.
The project does not include habitat for a candidate, sensitive or special-status species in local or regional
plans, or regulations, or by the California Department of Fish and Game or U.S. Fish or Wildlife Service;
therefore, the project would not have a substantial effect on sensitive species either directly through
habitat modification, and no impact would occur.
b) Would the project have a substantial adverse effect on any riparian habitat or
other sensitive natural community identified in local or regional plans, policies,
regulations or by the California Department of Fish and Game or US Fish and
Wildlife Service?
No Impact. The project is located in a City park. Colma Creek nearest the project site is a concrete lined
channel with no vegetation. According to the Environmental and Cultural Stewardship Element of the
City’s 2040 General Plan, there is no riparian or other sensitive habitat identified on or in the vicinity of
the project site (City of South San Francisco 2022a). Therefore, the project would not have a substantial
adverse effect on any riparian habitat or other sensitive natural community identified in local or regional
plans, policies, regulations or by the California Department of Fish and Game or US Fish and Wildlife
Service. No impact would occur.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
25
c) Would the project have a substantial adverse effect on state or federally protected
wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.) through
direct removal, filling, hydrological interruption, or other means?
Less than Significant with Mitigation. The project is located in a City park and there are no existing
wetlands or waterbodies on the project site. The nearest water body is Colma Creek, approximately 400
feet to the southwest of the disturbance area, and 40 feet southwest of the temporary staging area. Colma
Creek, in the vicinity of the project, has recently been modified for flood control management. The
bottom and sides of the channel are lined with concrete. The City’s stormwater system discharges to
Colma Creek and then to San Francisco Bay. Standard conditions of approval for all projects in the City
include all stormwater quality BMPs required by the San Mateo Countywide Pollution Prevention
Program (SMCWPPP) (see Section 3.X, Hydrology and Water Quality). All construction activities would
be required to implement BMPs to comply with the SMCWPPP, which would prevent sediment-laden
runoff and/or pollutants from leaving the site or impacting Colma Creek. Mitigation Measure BIO-1,
which would require management of exposed soils and vehicle fueling and maintenance, would further
reduce these less-than-significant impacts.
Excavation for the project would occur in the northeastern corner of Orange Memorial Park. Stormwater
runoff from excavation and construction activities could impact water quality in Colma Creek if it were
allowed to discharge to the stormwater system. Standard conditions of approval for all construction
projects in the City include all stormwater quality BMPs required by the SMCWPPP (see Section 3.X,
Hydrology and Water Quality). All construction activities would be required to implement BMPs to
comply with the SMCWPPP, which would prevent sediment-laden runoff and/or pollutants from entering
the stormwater system or Colma Creek. Implementation of BMPs required by the SMCWPPP would
prevent contaminated stormwater runoff from discharging to Colma Creek. Therefore, impacts to state or
federally protected wetlands (including, but not limited to, marsh, vernal pool, coastal, etc.), including
Colma Creek, through direct removal, filling, hydrological interruption, or other means, would be less
than significant. Mitigation Measure BIO-1, which would require management of exposed soils and
vehicle fueling and maintenance, would further reduce these less-than-significant impacts.
Mitigation Measure BIO-1:
The following measures shall be implemented to minimize impacts to stormwater drainages and Colma
Creek in the vicinity of the project:
a. All spoils, such as dirt, excavated material, debris, and construction-related materials, generated
during project activities shall be placed where they cannot enter any drainage ditch or culvert
inlet. Spoils shall be covered or secured to prevent sediment from escaping. Once the spoil pile is
no longer active, it shall be removed from the work area and disposed of lawfully at an
appropriate facility.
b. All exposed soils in the work area resulting from project activities shall be stabilized immediately
following the completion of work to prevent erosion. Erosion and sediment control BMPs, such
as silt fences, straw hay bales, gravel or rock-lined drainages, water check bars, and broadcast
straw, can be used. BMPs shall be made of certified weed-free materials. Straw wattles, if used,
shall be made of biodegradable fabric (e.g., burlap) and free of monofilament netting. At no time
shall silt-laden runoff be allowed to enter any drainages or other sensitive areas.
c. All fueling and maintenance of vehicles and other equipment and staging areas shall occur at least
100 feet from any drainages and other water features. Prior to the onset of work, the construction
contractor shall prepare a plan to be approved by the City before construction begins to allow a
prompt and effective response to any accidental spills. All workers shall be informed of the
importance of preventing spills, and of the appropriate measures to take should a spill occur.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
26
d. Before completion of the project, all exposed or disturbed surfaces shall be permanently protected
from erosion with reseeding and landscaping.
e. All exposed surfaces shall be wetted periodically to prevent significant dust.
f. All stockpiled soil shall be covered during periods of rain.
d) Would the project interfere substantially with the movement of any native resident
or migratory fish or wildlife species or with established native resident or
migratory wildlife corridors, or impede the use of native wildlife nursery sites?
Less than Significant with Mitigation. Due to the fragmentation, development, and high level of
disturbance and human activity in the project area, it is not anticipated that the project would adversely
affect a wildlife movement corridor. The public park, with scattered trees and grass soccer fields, is
unlikely to provide migration habitat for wildlife. The BMPs required under the SMCWPPP would
protect the stormwater system and Colma Creek from project runoff. The surrounding area includes urban
development and would not include any wildlife corridors. Operation of the project would not change
from existing conditions. Therefore, the project is not expected to interfere substantially with the
movement of any native resident or migratory wildlife. As a result, there would be no impacts to
migration and wildlife corridors.
The project site may contain suitable nesting and foraging habitat for avian species protected under the
Migratory Bird Treaty Act (MBTA) and California Fish and Game Code Sections 3511 and 3513. Trees
and shrubs on the project site may provide nesting habitat for migratory birds, but are unlikely to provide
habitat for raptors due to the high public use rates of the park.
The project has the potential to impact potential eggs or young of avian species covered under the MBTA
and California Fish and Game Code. Potential nesting sites for migratory birds could be removed through
removal of 34 trees on the project site; however, ornamental trees in the nearby surrounding park, and
trees in residential neighborhoods could provide suitable nesting and foraging habitat and would remain
undisturbed by project construction. If work occurs during bird nesting season, implementation of
Mitigation Measure BIO-2, which requires nesting bird surveys and construction modifications if active
nests are identified, would ensure that potentially significant impacts to nesting birds would be less than
significant.
Mitigation Measure BIO-2:
The following measures shall be implemented to minimize impacts to nesting birds, as required by the
MBTA:
a. If project activities, including, but not limited to, tree removal or pruning, grubbing and grading,
are conducted during nesting bird season (February 15 to September 15), preconstruction nest
surveys shall be conducted in and near the project (within 500 feet for large raptors and 300 feet
for all other birds) by a qualified biologist within 7 days of the start of construction. If nesting
birds are identified during the preconstruction survey, then the project shall be modified (i.e., a
no-work exclusion buffer of appropriate size [to be determined by the qualified project biologist]
shall be erected around active nests) and/or delayed as necessary to avoid impacts to the
identified nests, eggs, and/or young. Disturbing active nests must be avoided until young birds
have fledged.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
27
e) Would the project conflict with any local policies or ordinances protecting
biological resources, such as a tree preservation policy or ordinance?
Less than Significant. The City’s 2040 General Plan’s Environmental and Cultural Stewardship Element
includes policies to protect existing trees, expand the tree canopy cover, and enforce the Tree Preservation
Ordinance (City of South San Francisco 2023e). Under the City’s Tree Preservation Ordinance, protected
trees may not be removed or pruned back by more than a third without a permit. Protected trees include
the following:
x Any tree of the following species with a circumference of 75 inches or more when measured
54 inches above natural grade
o Blue gum (Eucalyptus globulus)
o Black acacia (Acacia melanoxylon)
o Myoporum (Myoporum laetum)
o Sweetgum (Liquidambar styraciflua)
o Glossy privet (Lingustrum lucidum)
o Lombardy poplar (Populus nigra)
x Any heritage tree of the following species with a circumference of 30 inches or more when
measured at 54 inches above natural grade
o California bay (Umbellaria californica)
o Oak (Quercus spp.)
o Cedar (Cedrus spp.)
o California buckeye (Aesculus californica)
o Catalina ironwood (Lyonothamnus floribundus var. asplenifolius)
o Strawberry tree (Arbutus spp.)
o Mayten (Maytenus boaria)
o Little Gem dwarf southern magnolia (Magnolia grandiflora 'Little Gem')
x Any tree other than the species listed above with a circumference of 48 inches or more when
measured 54 inches above natural grade
x A tree or stand of trees so designated based upon findings that it is unique and of importance to
the public due to its unusual appearance, location, or historical significance
x A stand of trees whereby each tree is dependent upon the others for survival (City of South San
Francisco 2023e)
The project would remove 34 existing trees, none of which are heritage trees (Rizzoli 2023). Further,
the project would plant 35 new trees to expand the City’s tree canopy cover in compliance with the
Environmental and Cultural Stewardship Element of the City’s 2040 General Plan. New trees would
include evergreen canopy trees such as Coast live oak (Quercus agrifolia), California pepper (Schinus
molle), and stone pine (Pinus pinea), as well as deciduous canopy trees such as London plane tree
(Platanus acerfolia ‘Columbia’), and, along Tennis Avenue, Canary Island date (Phoenix canariensis).
Since the project would not remove any heritage trees and would replace the tree canopy by planting
35 trees, no impacts to heritage trees would occur.
Policy CP-7.2 in the 2040 General Plan prioritizes expansion of the canopy cover to increase
environmental benefits; including sequestering carbon dioxide, mitigating the urban heat island,
improving air quality, providing traffic calming, and reducing energy use. The project would remove 34
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
28
trees and replace them with 35 new trees. Therefore, although the project would remove trees, it would
over time replace the lost canopy cover as the new trees mature. The project would not remove or prune
any heritage trees and would replace removed trees, therefore, the project would not conflict with any
local policies or ordinances protecting biological resources, such as general plan policies, tree
preservation policy or ordinance, therefore the impact would be less than significant.
f) Would the project conflict with the provisions of an adopted Habitat Conservation
Plan, Natural Community Conservation Plan, or other approved local, regional, or
state habitat conservation plan?
No Impact. There are no Habitat Conservation Plans or Natural Community Conservation Plans, or other
approved local, regional, or state habitat conservation plan, that apply to the project. Therefore, no impact
would occur.
V. Cultural Resources
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Cause a substantial adverse change in the
significance of a historical resource pursuant to §
15064.5?
܆܆܆܈
(b) Cause a substantial adverse change in the
significance of an archaeological resource pursuant to
§ 15064.5?
܆܈܆܆
(c) Disturb any human remains, including those interred
outside of dedicated cemeteries? ܆܈܆܆
Environmental Evaluation
The analysis is based on a cultural resources investigation and technical report prepared by SWCA
architectural historians and archaeologists that meet the Secretary of the Interior’s (SOI’s) Professional
Qualification Standards (Appendix B). The cultural resources inventory included a California Historical
Resources Inventory System (CHRIS) Northwest Information Center (NWIC) records search, a Sacred
Lands File (SLF) search through the Native American Heritage Commission (NAHC) database, a buried
site sensitivity analysis, a review of historic aerials and relevant literature, and an intensive pedestrian
survey for archaeological and historical resources.
a) Would the project cause a substantial adverse change in the significance of a
historical resource pursuant to § 15064.5?
No Impact. The investigation for the Cultural Resources Technical Memorandum identified one
previously recorded historical resource on the project site. In addition, SWCA performed a field visit,
walked the project area, and documented the architectural features of the existing pool building.
The railroad tracks on Railroad Avenue that were a part of the Southern Pacific Junction known as
CA-SMH-357 (P-41-000497) have been previously removed. The section of Railroad Avenue from
Memorial Park to Spruce Avenue has been completely removed. Beyond Spruce Avenue, the rail bed
continues without tracks, paralleling Railroad Avenue. This alignment has been completely redeveloped
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
29
in some sections, with ties, rails, and other components of the former structure removed in others.
The former resource does not retain sufficient integrity to convey significance. No other cultural
resources—archaeological or historical—are known to exist within the project area or its vicinity.
The project area is mostly covered in turf grasses with concrete, asphalt, trees, and shrubs. Orange Pool,
located at Orange Memorial Park in central South San Francisco, was constructed in 1970 and is a Mid-
Century Modern natatorium (indoor swimming pool). The current pool building is surrounded by mature
vegetation. Palm trees that line Tennis Avenue have a placard stating that they were planted in 1946, and
a war memorial is located at the entrance to the pool building.
The Orange Pool building was documented and evaluated for potential eligibility for listing in the
California Register of Historical Resources (CRHR) and designation as a South San Francisco Historical
Resource. Both assessments found no historic resources within the project area and that the Orange Pool
building does not demonstrate historical significance such that it would qualify for listing or designation
under either program. As such, Orange Pool does not appear to qualify as a historical resource.
The project would refurbish and move the existing Eternal Flame sculpture to a new plaza area in the
project area. Since the Eternal Flame sculpture was relocated from City Hall to the Park in the past, and
would be relocated again as part of the project, the project would not affect the historical status of the
sculpture.
Therefore, the project, which includes the demolition of the current Orange Pool building and the
construction of the new aquatic center, would have no impact on historical resources.
b) Would the project cause a substantial adverse change in the significance of an
archaeological resource pursuant to § 15064.5?
Less than Significant with Mitigation. No archaeological resources, artifacts, or features were observed
within the project area. As discussed above, the former railroad tracks on Railroad Avenue that were a
part of the Southern Pacific Junction have been previously removed.
The disturbed nature of the site through its grading and various periods of development and
improvements as a municipal park suggests that the overall archaeological sensitivity for the project area
is low. Despite this low overall sensitivity, it is possible that unknown archaeological resources are extant
within the project area. Such resources have the potential to be impacted during the construction of the
project, particularly during ground-disturbing activities. However, any project impacts to unknown
archaeological resources can be mitigated to a less-than-significant level by following the Inadvertent
Discovery procedures noted below in Mitigation Measure CUL-1.
Mitigation Measure CUL-1:
The following measures shall be implemented in the event that unanticipated cultural resources are
exposed during project construction:
a. In the event that unanticipated cultural resources are exposed during disturbance activities, work
within 15 meters (50 feet) of the find must stop and an SOI-qualified archaeologist (SWCA
Senior Project Manager Christina Alonso [925-399-9220]) must be notified immediately. Work
may not resume until a qualified archaeologist can evaluate the significance of the find.
Disturbance activities may continue in other areas. If the discovery proves significant, additional
work such as archaeological testing, data recovery, or consultation with stakeholders may be
warranted.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
30
c) Would the project disturb any human remains, including those interred outside of
dedicated cemeteries?
Less than Significant with Mitigation. Although, according to the representative of the Amah Mutsun
Band of Mission San Juan Bautista, railroads were historically built on Native burial grounds, there are no
known cemeteries or burial sites in the project area. There is a low potential to encounter intact buried
human remains within the project area. Despite this low overall sensitivity, it is possible that
unanticipated human remains are extant within the project area, which have the potential to be impacted
during the construction of the project, particularly during ground-disturbing activities. However, any
project impacts to unknown human remains can be mitigated to a less-than-significant level by following
the Discovery of Human Remains procedures noted below in Mitigation Measure CUL-2.
Mitigation Measure CUL-2:
The following measures shall be implemented in the event that human remains are exposed during project
construction:
The discovery of human remains during the course of the project is a possibility. If human remains are
encountered, then the procedures outlined by the NAHC, in accordance with Section 7050.5 of the
California Health and Safety Code and PRC Section 5097.98, would be followed. If the monitor
determines that a discovery includes human remains:
a. All ground-disturbing work within the immediate vicinity (25 feet) of the find would halt.
b. The archaeologist would contact the San Mateo County Coroner:
San Mateo County Coroner
50 Tower Road
San Mateo, CA 94402
Phone: (650) 312-5562
Web: https://www.smcgov.org/coroner
c. As a courtesy, the County Coroner would also notify the NAHC:
Native American Heritage Commission
915 Capitol Mall, Room 364
Sacramento, CA 95814
Phone: (916) 373-3710
Email: nahc@nahc.ca.gov
The County Coroner would have 2 working days to examine the remains after being notified in
accordance with California Health and Safety Code Section 7050.5. If the San Mateo County
Coroner determines that the remains are Native American and are not subject to the County
Coroner’s authority, the County Coroner has 24 hours to notify the NAHC of the discovery.
d. The NAHC would immediately designate and notify the Native American Most Likely
Descendant (MLD), who will have 48 hours after being granted access to the location of the
remains to inspect them and provide recommendations for the treatment of them.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
31
VI. Energy
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Result in a potentially significant environmental
impact due to wasteful, inefficient, or unnecessary
consumption of energy resources, during project
construction or operation?
܆܆܈܆
(b) Conflict with or obstruct a state or local plan for
renewable energy or energy efficiency? ܆܆܈܆
Environmental Evaluation
a) Would the project result in a potentially significant environmental impact due to
wasteful, inefficient, or unnecessary consumption of energy resources, during
project construction or operation?
The City of South San Francisco adopted their Climate Action Plan (CAP) in 2022 (City of South San
Francisco 2022b). The CAP identifies strategies and actions to reduce GHG emissions and achieve carbon
neutrality by 2045. Through the CAP, the City implements GHG reduction measures at both City-owned
facilities and at private developments, including, but not limited to, energy-efficient new construction, all-
electric construction of new buildings, the installation of solar facilities at City buildings; implementing
landscape water requirements; requiring high efficiency water fixtures; increasing tree canopy;
implementing a Travel Demand Management (TDM) program; and requiring electrical car charging
stations at City facilities.
Less than Significant. The proposed project would involve the demolition of a 50-year-old aquatic
center, construction of a new aquatic center with two pools, mechanical equipment and infrastructure, and
various landscaping and hardscape. During construction, energy consumption would be associated with
primarily diesel and gasoline fuel consumption for the operation of construction equipment and for
worker and haul trips. During operations, energy consumption would be limited to electricity needed for
standard building and pool operations such as lighting, heating/cooling, and mechanical equipment, as
well as outdoor exterior and landscape lighting. No natural gas is planned for consumption. The
consumption of energy resources during construction would be temporary and the installation of a new
and energy-efficient building and equipment is anticipated to function more effectively than the existing
aquatic center. Therefore, implementation of the project would not result in potentially short- or long-term
significant impacts due to wasteful, inefficient, or unnecessary consumption of energy resources. Instead,
the proposed project would improve energy efficiency for the City’s aquatic center. While construction
activities would involve diesel and gasoline fuel use for equipment and haul and commuter trips, overall
consumption would be minimal and temporary, lasting approximately 18 months. For these reasons, the
project’s energy use would be less than significant.
b) Would the project conflict with or obstruct a state or local plan for renewable
energy or energy efficiency?
Less than Significant. The proposed Orange Pool Aquatic Center is considered a new development. The
City’s CAP has goals for new development that include providing on-site solar and batteries when
feasible; constructing all-electric buildings; exceeding mandatory energy efficiency requirements by 20
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
32
percent or more; providing EV charging stations at municipal facilities; enhancing bicycle, transit and
pedestrian connectivity; implementing mandatory organics and food waste diversion; using water
efficient landscaping and high-efficiency water fixtures; expanding tree canopy cover; requiring all new
municipal buildings and facilities to meet minimum LEED silver standards; and requiring municipal
projects to achieve 75 percent waste diversion from landfill.
The proposed project is consistent with the City’s CAP. The new pool facilities would meet or exceed
energy efficiency requirements, are all-electric, include solar panels, and may include batteries if
determined to be feasible. The project includes three EV charging stations in the new parking lot, 9
bicycle racks, water efficient landscaping and high-efficiency water fixtures. Proposed building materials
and mechanical equipment would include energy-efficient glazing, insulation, and energy efficient
models. At least 75 percent of asphalt or concrete removed during construction would be recycled.
The project would also be consistent with all state plans for energy efficiency, including the 2017
California Air Resources Board Climate Change Scoping Plan, State of California Energy Plan,
California Renewables Portfolio Standard Program, Clean Energy and Pollution Reduction Act of 2015,
State Alternative Fuels Plan, California Green Building Standards Code—Part 11, Title 24, and California
Code of Regulations (CALGreen), the first-in-the-nation mandatory green building standards code. For
these reasons, the project would not conflict with a state or local plan for renewable energy or energy
efficiency, and impacts on energy would be less than significant.
VII. Geology and Soils
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Directly or indirectly cause potential substantial
adverse effects, including the risk of loss, injury, or
death involving:
(i) Rupture of a known earthquake fault, as
delineated on the most recent Alquist-Priolo
Earthquake Fault Zoning Map issued by the
State Geologist for the area or based on other
substantial evidence of a known fault? Refer to
Division of Mines and Geology Special
Publication 42.
܆ ܆ ܈ ܆
(ii) Strong seismic ground shaking? ܆ ܆ ܈ ܆
(iii) Seismic-related ground failure, including
liquefaction? ܆ ܈ ܆ ܆
(iv) Landslides? ܆ ܆ ܆ ܈
(b) Result in substantial soil erosion or the loss of
topsoil? ܆ ܆ ܈ ܆
(c) Be located on a geologic unit or soil that is unstable,
or that would become unstable as a result of the
project, and potentially result in on- or off-site
landslide, lateral spreading, subsidence, liquefaction
or collapse?
☐܈☐܆
(d) Be located on expansive soil, as defined in Table 18-
1-B of the Uniform Building Code (1994), creating
substantial direct or indirect risks to life or property?
☐☐☐܈
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
33
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
(e) Have soils incapable of adequately supporting the use
of septic tanks or alternative waste water disposal
systems where sewers are not available for the
disposal of waste water?
☐☐☐܈
(f) Directly or indirectly destroy a unique paleontological
resource or site or unique geologic feature? ☐܈☐☐
Environmental Evaluation
a) Would the project directly or indirectly cause potential substantial adverse effects,
including the risk of loss, injury, or death involving:
The analysis in this section is based on the Geotechnical Evaluation – Revision 1 for the Orange
Memorial Park Aquatic Center, December 6, 2022, by Ninyo and Moore. The geologic study includes
seismic hazards (liquefaction, lateral spreading, subsidence), compressible soils, expansive soils, and
corrosive soils.
a-i) Rupture of a known earthquake fault, as delineated on the most recent Alquist-
Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or
based on other substantial evidence of a known fault? Refer to Division of Mines
and Geology Special Publication 42.
Less than Significant. The project site is located approximately 2 miles northeast of the San Andreas
Fault Zone and is not located in a designated Alquist-Priolo Earthquake Fault Zone (California Geological
Survey 2021). Therefore, while the project site is in a known seismic area and would likely be subject to
earthquakes, the likelihood of surface faulting or ground rupture is considered low, and it would not be
likely to be subject to surface rupture from a known earthquake fault. Therefore, potential impacts related
to surface rupture from earthquake activity are less than significant.
a-ii) Strong seismic ground shaking?
Less than Significant. The project site is located approximately 2 miles northeast of the San Andreas
Fault Zone and 16.3 miles southwest of the Hayward Fault Zone, in one of the most seismically active
regions in the state. The San Andreas Fault has produced earthquakes of an estimated magnitude between
7.7 and 8.3 in 1906 (U.S. Geological Survey [USGS] 2023), and 6.9 in 1989 (USGS 2019). The 1908
quake produced shaking on the Modified Mercalli Intensity Scale of between VII and IX which was
strong enough to cause significant damage to structures around the peninsula (USGS 2023).
The design and construction of the project is required to comply with the building codes related to seismic
risk such as the 2022 California Building Code (CBC) and South San Francisco Municipal Code, which
incorporates the International Building Code. The City would be required to submit a soils report in order
to obtain a building permit from the City Economic and Community Development Department, Building
Division, which would ensure that project plans and specifications comply with the CBC and local
amendments to the code, where applicable (City of SSF 2018). Among many seismic requirements, the
CBC requires foundations and structures to be designed and constructed to withstand the ground motions
(i.e., peak ground accelerations [g]) that have a 10 percent chance of being exceeded in 50 years
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
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(equivalent to a 1/475 annual chance of being exceeded). Therefore, compliance with CBC requirements
would result in a less-than-significant impacts due to strong seismic ground shaking.
a-iii) Seismic-related ground failure, including liquefaction?
Less than Significant with Mitigation. The project site is in a liquefaction hazard zone identified by the
State Geologist (California Geological Survey 2021).
The geotechnical study analyzed the potential for liquefaction from a magnitude 7.81 earthquake
producing a peak ground acceleration (PGA) of 0.99 gravity (g). Peak ground acceleration is a measure of
how hard the ground shakes at a given point. A PGA of 0.99g is correlated to an intensity of IX on the
Modified Mercalli Scale, which would produce violent perceived ground shaking and heavy damage to
man-made structures.
The study assumed a groundwater depth of 12 to 13 feet. The results indicate that soil at depths ranging
from about 10 to 23 feet, and from about 25 to 34 feet below ground surface may liquefy, potentially
causing settlement, sand boils (where liquefied soils from below are ejected up through the ground
surface), and ground subsidence. The study identified the potential for liquefaction of up to 5 inches in the
liquefaction zone, and an additional 3 to 5 inches of settlement in the dry zone above the liquefaction
zone.
Since the site is located within a liquefaction-susceptible zone, and based on the results of the
geotechnical evaluation, the project would have the potential for ground shaking, liquefaction-induced
ground settlement, and sand-boil-induced ground subsidence. Therefore, impacts related to ground failure
would be potentially significant. Implementation of the engineering recommendations provided in the
geotechnical report, and proposed Mitigation Measure GEO-1, would minimize risks to life and property
from seismic-related hazards. Therefore, this impact would be less than significant with mitigation
incorporated.
Mitigation Measure GEO-1:
All earthwork and construction activities shall be monitored by a licensed engineer or professional
geologist. The purpose of the monitoring is to assess soil conditions and confirm the appropriate
engineered support systems are incorporated into the project design and installed correctly.
Implementation of Mitigation Measure GEO-1, in addition to the requirements of the geotechnical report,
would reduce impacts related to seismic hazards to less than significant.
a-iv) Landslides?
No Impact. The project site is relatively flat, with elevations varying from 25 to 29 feet above mean sea
level. It is not located in an identified landslide hazard zone. Therefore, the project would not result in
impacts related to landslide hazard and no impact would occur.
b) Result in substantial soil erosion or the loss of topsoil?
Less than Significant. A significant impact would occur if a project would expose large areas to the
erosional effects of wind and water for a protracted period of time, resulting in substantial erosion and/or
the loss of topsoil. The majority of the ground surface on the north side of the park consists of 1 to 4
feet of imported fill material on top of native soil. Much of it is paved over. The project site has a low-
to-moderate erosion risk. Since the majority of the project work area is previously disturbed and
essentially flat, clearing, excavation, and grading activities at the project site are unlikely to result in
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Initial Study/Mitigated Negative Declaration
35
significant short-term erosion impacts. In addition, project construction would comply with the
SMCWPPP, which would include BMPs to prevent stormwater erosion from leaving the site. The project
would also comply with the BAAQMD fugitive dust requirements, which would prevent dust from wind
erosion from leaving the site.
The project would require excavation for the new swimming pools, buildings, and parking area.
The project would require a total of approximately 9,700 cubic yards (CY) of cut, approximately 970 CY
of which may be used as fill. A maximum of approximately 9,700 cubic yards of soil and 800 cubic yards
of debris from demolition of the existing pool and hardscape would be hauled off-site for disposal.
Engineered fill would be imported to the site.
As required by the San Francisco RWQCB and the SMCWPPP, the project would implement BMPs to
reduce erosion during construction. Since the total area of disturbance is more than 1 acre (approximately
6.5 acres), the City would be required to implement a stormwater pollution prevention plan (SWPPP),
according to the requirements of the San Francisco Bay RWQCB Municipal Regional Stormwater
National Pollutant Discharge Elimination System (NPDES) Permit and the SMCWPPP. The plan would
include BMPs to control erosion and sedimentation impacts and stabilize disturbed bare earth areas. Any
bare earth areas would be reseeded prior to the end of construction. Section 3.X, Hydrology and Water
Quality, provides additional information about the SWPPP and Municipal Regional Stormwater NPDES
Permit requirements and related permits.
The addition of approximately 17,215 square feet (approximately 0.4 acre) of impervious surface area for
the aquatic center, parking lot, and walkways could increase the stormwater runoff volume and rate
compared with existing conditions, which could in turn accelerate soil erosion and loss of topsoil if
stormwater were conveyed directly into Colma Creek. However, as discussed in Section 3.X(a), the
project is a C.3 regulated project and includes LID stormwater measures that meet City requirements to
contain and treat stormwater flow. Stormwater from the project site would flow overland to treatment and
containment areas on the project site. Overflow would discharge to a storm drain on W. Orange Avenue,
which would eventually discharge to Colma Creek. Stormwater runoff would be directed into new
vegetated channels, which would provide biotreatment of stormwater before it enters the storm drain and
Colma Creek; this biotreatment meets the requirements of the C.3 program. All disturbed areas would be
reseeded and/or landscaped prior to the end of construction. The new drainage and treatment system
would be adequate to handle the additional volume of stormwater from 0.4 acre of impervious surface
area. Therefore, impacts resulting from water-related erosion would be less than significant.
c) Would the project be located on a geologic unit or soil that is unstable, or that
would become unstable as a result of the project, and potentially result in on-
or off-site landslide, lateral spreading, subsidence, liquefaction or collapse?
Less than Significant with Mitigation. The project site has a high potential for liquefaction. As
discussed above, the City has completed a geotechnical report and would be required to submit a soils
report that complies with the CBC. As stated above, 2022 CBC and standard geotechnical engineering
practice requires identification of seismic design parameters to inform all earthwork requirements,
foundation designs, and concrete/building material specifications. Design and construction of the project
in accordance with the CBC and the recommendations in the geotechnical report, along with
implementation of Mitigation Measure GEO-1, would be sufficient to ensure public exposure to risks
related to seismic-induced ground failure would remain minimal. Therefore, this impact would be less
than significant with mitigation incorporated.
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d) Would the project be located on expansive soil, as defined in Table 18-1-B of the
Uniform Building Code (1994), creating substantial direct or indirect risks to life or
property?
No Impact. The geotechnical report determined that the expansion index of the soils on the project site
had very low expansion potential, and the subsurface borings showed granular soils with little expansion
potential. There are no substantial direct or indirect risks to life or property as the expansion index of the
soils on the project site had very low expansion potential. Therefore, the risk related to expansive soils is
relatively low and this impact would be less than significant.
e) Would the project have soils incapable of adequately supporting the use of septic
tanks or alternative wastewater disposal systems where sewers are not available
for the disposal of wastewater?
No Impact. The project would not include septic systems or alternative wastewater disposal systems.
No impact would occur.
f) Would the project directly or indirectly destroy a unique paleontological resource
or site or unique geologic feature?
Less than Significant with Mitigation. While the majority of the project site has been previously
disturbed as a developed recreational park, ground disturbance and excavation for the pools and within
the project area would occur during construction. Excavation in these areas could potentially uncover
unique paleontological resources or geologic features. Based on the results of borings for the adjacent
Stormwater Capture Project, located approximately 120 feet southwest of the project, the likelihood of
encountering unique paleontological resources or geologic features is low; however, the potential for
uncovering such resources during excavation remains. Mitigation Measure CUL-1 requires that if historic
or cultural resources are encountered during site grading or excavation activities, all work shall be halted
within 100 feet of the discovery area and the contractor shall notify the City. The implementation of this
measure also applies to paleontological resources and geologic features, thereby minimizing potential
impacts to such resources. Therefore, impacts to unique paleontological resources or unique geologic
features would be less than significant with mitigation.
VIII. Greenhouse Gas Emissions
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Generate greenhouse gas emissions, either directly
or indirectly, that may have a significant impact on the
environment?
܆܆܈܆
(b) Conflict with an applicable plan, policy or regulation
adopted for the purpose of reducing the emissions of
greenhouse gases?
܆܆܈܆
Environmental Evaluation
Global climate change can be measured by changes in wind patterns, storms, precipitation, and
temperature. Scientific consensus has identified human-related emissions of greenhouse gases (GHGs)
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37
above natural levels is a significant contributor to global climate change. GHGs are substances that trap
heat in the atmosphere and regulate the Earth’s temperature, and include water vapor, CO2, methane
(CH4), nitrous oxide (N2O), ground level ozone, and fluorinated gases, such as chlorofluorocarbons
(CFCs), hydrochlorofluorocarbons (HCFCs), and halons. The potential impacts of climate change include
severe weather patterns, flooding, reduced quality and availability of water, sea level rise, and beach
erosion. Primary activities associated with GHG emissions include transportation, utilities (e.g., power
generation and transport), industry, manufacturing, agriculture, and residential. End-use sector sources of
GHG emissions in California are as follows: transportation (41 percent); industry (23 percent); electricity
generation (16 percent); agriculture and forestry (8 percent); residential (7 percent); and commercial (5
percent) (CARB 2018).
Assembly Bill (AB) 32 is a California State Law that establishes a comprehensive program to reduce
GHG emissions from all sources throughout the state. AB 32 requires CARB to develop regulations and
market mechanisms to reduce California’s GHG emissions to 1990 levels by 2020, representing a 25
percent reduction statewide, with mandatory caps beginning in 2012 for significant emissions sources.
GHG emissions contributing to global climate change are attributable in large part to human activities
associated with the industrial/manufacturing, utility, transportation, residential, and agricultural sectors.
Therefore, an individual project’s GHG emissions are at a micro-scale level relative to global emissions
and effects to global climate change; however, an individual project could result in a cumulatively
considerable incremental contribution. As such, impacts related to emissions of GHG are inherently
considered cumulative impacts. Estimated GHG emissions attributable to future development in the City
of South San Francisco are primarily associated with increases of carbon dioxide (CO2) and, to a lesser
extent, other GHG pollutants, such as methane (CH4) and nitrous oxide (N2O) associated with area
sources, mobile sources or vehicles, utilities (electricity and natural gas), water usage, wastewater
generation, and the generation of solid waste.
GHG Emissions Threshold
At the regional level, the BAAQMD has proposed the following thresholds of significance for
operational-related GHG emissions as of May 2017:
x For land use development projects, the threshold is compliance with a qualified GHG Reduction
Strategy; or annual emissions less than 1,100 metric tons per year (MT/year) of CO2e; or 4.6 MT
CO2e/SP/year (residents + employees). Land use development projects include residential,
commercial, industrial, and public land uses and facilities.
x For stationary-source projects, the threshold is 10,000 metric tons per year (MT/year) of CO2e.
Stationary-source projects include land uses that would accommodate processes and equipment
that emit GHG emissions and would require an Air District permit to operate.
If annual emissions of operational-related GHGs exceed these levels, the proposed project would result in
a cumulatively significant impact. The BAAQMD has not yet adopted a threshold of significance for
construction-related GHG emissions. However, Section 8.2 of the BAAQMD CEQA Air Quality
Guidelines recommends that the Lead Agency quantify and disclose GHG emissions that would occur
during construction and make a determination of the significance of the construction-related GHG
impacts in relation to meeting Assembly Bill 32 GHG reduction goals. The Lead Agency is also
encouraged to incorporate BMPs to reduce GHG emissions during construction as applicable. BMPs
include but are not limited to: using alternative fueled (e.g., biodiesel, electric) construction
vehicles/equipment of at least 15 percent of the fleet; using local building materials of at least 10 percent;
and recycling or reusing at least 50 percent of construction waste or demolition materials (BAAQMD
2017b).
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The City of South San Francisco adopted a CAP in 2022 that identifies strategies and actions to reduce
GHG emissions. The City has and continues to implement GHG reduction measures associated with both
City-owned facilities and private development. These GHG reduction measures include, but are not
limited to: the installation of solar facilities at City buildings; adopting and enforcing a construction and
demolition waste recycling ordinance; adopting and implementing a TDM program; and providing
electrical car charging stations at City facilities.
a) Would the project generate greenhouse gas emissions, either directly or
indirectly, that may have a significant impact on the environment?
Less than Significant. The primary source of proposed Project construction GHG emissions would be
from mobile sources such as worker trips and from haul trips during excavation. Neither the City of South
San Francisco nor the BAAQMD has adopted a threshold of significance for construction-related GHG
emissions. However, the Lead Agency should quantify and disclose GHG emissions that would occur
during construction, and make a determination on the significance of these construction-generated GHG
emission impacts in relation to meeting AB 32 GHG reduction goals, as required by the Public Resources
Code, Section 21082.2. Project operational GHG emissions would be limited to the long-term operation
of a new Aquatic Center, including heating, cooling, general lighting and operational uses. The
BAAQMD operational, long-term GHG emission thresholds of significance for stationary source projects
is more than 10,000 metric tons per year carbon dioxide equivalent units (MTCO2e/year). If a project
generates GHG emissions above the threshold level, the project would be considered to generate
significant GHG emissions and conflict with applicable GHG regulations. Given that the proposed Project
operations would be limited to the electrical operation associated with the new Aquatic Center, annual
operation GHG emissions are calculated to be 228 MTCO2e/year, well below the 10,000 MTCO2e/year
threshold of significance. Annual short-term construction GHG emissions would be 321 MTCO2e/year
and would not significantly contribute to climate change. For these reasons, the proposed project’s GHG
emissions impacts would be less than significant.
b) Would the project conflict with an applicable plan, policy or regulation adopted for
the purpose of reducing the emissions of greenhouse gases?
Less than Significant. The BAAQMD 2017 Clean Air Plan outlines the goals and objectives to reduce
Bay Area GHG emissions to 40 percent below 1990 levels by 2030 and 80 percent below 1990 levels by
2050, consistent with the GHG reduction targets adopted by the state of California. The 2017 Clean Air
Plan includes the following measures to reduce emissions from construction and farming equipment:
x Use various strategies to reduce emissions from construction and farming equipment (e.g.,
incentives for equipment upgrades and/ or encourage the use of renewable electricity and fuels).
x Provide incentives for the early deployment of electric, Tier 3 and 4 off-road engines used in
construction, freight and farming equipment.
x Support field demonstrations of advanced technology for off-road engines and hybrid drive trains.
x Work with CARB, the California Energy Commission (CEC), and others to develop more fuel-
efficient off-road engines and drive-trains; and
x Work with local communities, contractors, farmers, and developers to encourage the use of
renewable electricity and renewable fuels, such as biodiesel from local crops and waste fats and
oils, in applicable equipment.
CARB’s AB 32 Scoping Plan (2008) has several measures to reduce emissions from transportation fuels,
which would indirectly reduce emissions from construction equipment. These include the Low Carbon
Fuel Standard (LCFS), which would reduce GHG emissions by minimizing the full fuel-cycle carbon
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
39
intensity of transportation fuels used in California. The 2017 Scoping Plan Update, which builds upon the
initial Scoping Plan, contains new strategies and recommendations to reduce GHG to reach the State’s
2030 GHG emissions reduction target (CARB 2017). California’s overall plan for climate adaptation is
also summarized in Safeguarding California Plan: 2018 Update. This plan provides policy guidance
associated with climate risks in nine sectors in California and provides realistic sector-specific
recommendations (CNRA 2018).
The various plans, policies, and regulations at the state and local level do not directly require the
reduction of GHG emissions from construction equipment; however, emissions would be indirectly
reduced through programs like the LCFS. Several rules adopted to reduce emissions of non-GHGs, such
as CARB’s In-Use Off-Road Diesel Vehicle Regulation (13 CCR 2449), could also reduce GHG
emissions. Since the construction equipment would operate in compliance with all applicable regulations
for off-road equipment, the proposed project would not conflict with any plan, policy, or regulation
adopted for the purpose of reducing GHG emissions. Proposed mechanical equipment needed for standard
building and pool operations, as well as energy efficiency for lighting and heating/cooling, would include
energy efficient models. No natural gas is planned for operations. For these reasons, the proposed project
would not conflict with an applicable plan, policy or regulation adopted for the purpose of reducing GHG
emissions and impacts would be less than significant.
IX. Hazards and Hazardous Materials
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Create a significant hazard to the public or the
environment through the routine transport, use, or
disposal of hazardous materials?
܆܆܈܆
(b) Create a significant hazard to the public or the
environment through reasonably foreseeable upset
and accident conditions involving the release of
hazardous materials into the environment?
܆܆܈܆
(c) Emit hazardous emissions or handle hazardous or
acutely hazardous materials, substances, or waste
within one-quarter mile of an existing or proposed
school?
܆܆܈܆
(d) Be located on a site which is included on a list of
hazardous materials sites compiled pursuant to
Government Code Section 65962.5 and, as a result,
would it create a significant hazard to the public or the
environment?
܆܈܆܆
(e) For a project located within an airport land use plan
or, where such a plan has not been adopted, within
two miles of a public airport or public use airport,
would the project result in a safety hazard or
excessive noise for people residing or working in the
project area?
܆܆܈܆
(f) Impair implementation of or physically interfere with
an adopted emergency response plan or emergency
evacuation plan?
܆܆܈܆
(g) Expose people or structures, either directly or
indirectly, to a significant risk of loss, injury or death
involving wildland fires?
܆܆܆܈
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Environmental Evaluation
a) Would the project create a significant hazard to the public or the environment
through the routine transport, use, or disposal of hazardous materials?
Less than Significant. A significant impact may occur if a project would involve the use or disposal of
hazardous materials as part of its routine operations or would have the potential to generate toxic or
otherwise hazardous emissions that could adversely affect sensitive receptors.
Construction of the project would involve the transport, use, and disposal of potentially hazardous
materials. These materials include paints, adhesives, surface coatings, cleaning agents, fuels, and oils that
are typically associated with development of any construction project. As described in Chapter 1, Project
Description, construction activities would be temporary, lasting approximately 18 months. These
temporary construction activities involving the use, transport, storage, and disposal of hazardous materials
would be conducted in compliance with all health and safety requirements, such as County and City
General Plan policies, CCR Sections 337 through 340, Chapter 6.95 of California Health and Safety Code
Article 1, and CCR Title 19, Public Safety, Division 2 (if required). Because the City and contractor
would comply with applicable regulations and laws pertaining to the transport, storage, use, and disposal
of potentially hazardous materials, the exposure of the public, construction workers, and environment to
hazardous materials would be less than significant.
Operation of the pool would include an automatic system using chlorine products (calcium chloride,
calcium hypochlorite, muriatic acid, sodium bicarbonate, sodium hypochlorite, sodium thiosulfate
pentahydrate) in liquid form for disinfection in both the indoor and outdoor pools. The indoor pool would
also use UV radiation as a secondary process to control the formation of undesirable chlorine byproducts.
A computerized system would monitor chlorine levels in both pools to ensure the proper levels of
chlorine and increased water quality (City of South San Francisco 2023c). Chemicals would be
held in closed tanks with secondary containment, and refillable by container truck. Chlorine storage and
delivery systems would meet standard engineering requirements for safety and are considered low hazard.
The project site and vicinity include an urban park and urban residential areas. The area historically
supported flower nurseries, including the Mantegani site and Mazzanti Carnation, Inc. The Mantegani
site, approximately 300 feet north of the project site, was an ornamental flower nursery from 1931 to
1987 specializing in snapdragons and carnations. The site underwent a cleanup for pesticide contaminants
(primarily dieldrin and DDT) that was certified as complete as of February 20, 2007 (California
Department of Toxic Substances Control [DTSC] 2023b). Mazzanti Carnations, Inc., approximately 800
feet west of the project site, operated greenhouses until the early 1990s. The site underwent a cleanup for
pesticide contaminants (insecticides, fumigants, and herbicides) that was certified as complete as of
August 26, 2016 (State Water Resources Control Board [SWRCB] 2023b).
Soil and water testing was completed by Fugro Consultants, Inc. in 2016 for Orange Memorial Park’s
Stormwater Capture Project, approximately 480 feet southwest of the project. Testing revealed relatively
low levels of organochlorine pesticides at soil depths of between 2 and 3.5 feet below ground surface.
Fugro Consultants, Inc. also identified that arsenic was the only material present in amounts exceeding an
Environmental Screening Level (ESL).2 Arsenic was detected at levels between 1.0 milligrams per
kilogram (mg/kg) and 3.0 mg/kg, which exceeds the commercial shallow soil exposure ESL of 0.31
mg/kg and the Any Land Use/Any Soil Depth Exposure for a Construction Worker ESL of 0.94
2 ESLs are developed by the San Francisco Bay Regional Water Quality Control Board. They are intended to help identify
potential environmental concerns at contaminated sites but are not intended to establish policy or regulation (SWRCB 2020).
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Initial Study/Mitigated Negative Declaration
41
mg/kg. The amount of arsenic present is common as background levels in Bay Area soils and is not
likely to be from greenhouse use.
All construction activities would be required to comply with applicable policies, standards, and
regulations to ensure there are no hazards related to the routine use, disposal, transport, or accidental
release of hazardous materials (California Occupational Safety and Health Administration [OSHA]
requirements, Title 8 and 22 of the Code of California Regulations). All excavated fill and native soil
material would be disposed in accordance with applicable codes and regulations and the transport and
disposal of these materials is not expected to create a significant hazard to construction workers or the
nearby community. Therefore, the proposed project would not create a significant hazard to the public
or the environment through the routine transport, use, or disposal of hazardous materials and this impact
would be less than significant. Implementation of mitigation measures HAZ-1 and HAZ-2 would further
reduce this less than significant impact.
b) Would the project create a significant hazard to the public or the environment
through reasonably foreseeable upset and accident conditions involving the
release of hazardous materials into the environment?
Less than Significant. A significant impact may occur if a project could create an upset or accident
condition involving hazardous materials. The project is not located on a hazardous contamination site,
and thus there is no reasonably foreseeable release of hazardous materials from existing hazardous
contamination.27F Construction of the project would use small amounts of hazardous materials, such as
diesel fuel. The BMPs implemented for the SMCWPPP (discussed further in Section 3.X, Hydrology and
Water Quality) would contain minor spills during construction. Operation of the pool complex and use of
pool chemicals would not change appreciably because of the project. Therefore, the project would not
create a significant hazard to the public or the environment through reasonably foreseeable upset and
accident conditions involving the release of hazardous materials into the environment, and the impact
would be less than significant.
c) Would the project emit hazardous emissions or handle hazardous or acutely
hazardous materials, substances, or waste within one-quarter mile of an existing
or proposed school?
Less than Significant. A project-related significant adverse effect may occur if a project site is within
0.25 mile of an existing or proposed school site, and the project is projected to release hazardous
emissions that would exceed regulatory thresholds and would pose a health hazard. The closest school is
Los Cerritos Elementary School, located approximately 0.23 mile southwest of the project. Other schools
in the vicinity include South San Francisco High School and Parkway Heights Middle School, which are
0.35 mile southwest and 0.36 mile northeast, respectively. In addition to camps, the Ferneke Building is
used to host spring and summer camps. Spring Camp occurs one week out of the year. Summer Camps
occur nine weeks out of the year (City of South San Francisco Parks and Recreation 2023). As discussed
under Sections 3.IX(a) and 3.IX(b) above, the project would comply with applicable regulations and laws
pertaining to the transport, storage, use, and disposal of potentially hazardous materials, and would not
create a significant hazard to the public or the environment related to hazardous materials. Therefore, the
project would not handle hazardous materials in a way that would emit hazardous emissions. Common
handling of pool chemicals and small amounts of materials such as cleaning materials is unlikely to
impact local schools. Therefore, this impact would be less than significant.
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d) Would the project be located on a site which is included on a list of hazardous
materials sites compiled pursuant to Government Code Section 65962.5 and, as a
result, would it create a significant hazard to the public or the environment?
Less than Significant with Mitigation. California Government Code Section 65962.5 requires various
state agencies to compile lists of hazardous waste disposal facilities, unauthorized release from
underground storage tanks, contaminated drinking water wells, and solid waste facilities from which there
is known migration of hazardous waste, and to submit such information to the Secretary for
Environmental Protection on at least an annual basis. In meeting the provisions in California Government
Code Section 65962.5, commonly referred to as the “Cortese List,” database resources such as EnviroStor
and GeoTracker provide information regarding identified facilities (DTSC 2023a; SWRCB 2023a).
As discussed under Section 3.IX(a), two sites have undergone cleanup for pesticide contamination in the
vicinity of the project: the Mantegani site, approximately 300 feet from the project site, at 735
Commercial Avenue; and the Mazzanti Carnation site, approximately 800 feet from the project site, at
781 Tennis Drive. Both sites have undergone cleanup and been certified.
In addition, investigations for Orange Memorial Park’s Stormwater Capture Project, approximately 500
feet southwest of the project site, conducted in 2016 identified low levels of organochlorine pesticides in
the soil samples collected at depths between 2 and 3.5 feet below ground surface (bgs). For these soil
samples, analyses detected concentrations of DDD (at 0.0022 milligrams per kilogram [mg/kg], DDE (up
to 0.47 mg/kg), DDT (up to 0.38 mg/kg), and dieldrin (up to 0.17 mg/kg). All these detected
concentrations were at or below respective Environmental Screening Levels (ESL) for commercial
shallow soil exposure and any soil depth exposures for construction workers (Fugro Consultant, Inc.
2016).
Investigations for the Stormwater Capture Project also identified elevated levels of arsenic in the soil that
are likely the result of historic chemical use, as well as its presence in local bedrock materials that have
been used as import fill (City of South San Francisco 2019). Soil sampling for the Stormwater Capture
Project detected the presence of arsenic in all samples at a range of 1.0 to 3.0 mg/kg (Fugro Consultant,
Inc. 2016). These concentrations fall within the expected range of naturally occurring arsenic for the area.
While this concentration is higher than DTSC/RWQCB ESL, the concentrations do not rise to levels that
raise agency concern (e.g., 1,000 or 10,000 times above the ESL).
Construction would involve excavation, and grading, and the movement of soils and dust emissions from
these activities which could cause a temporary impact to the public or the environment. Short-term soil
exposure would potentially affect construction workers due to the potential presence of low levels of
organochlorine pesticides and arsenic as detected in the soil samples at the adjacent Water Capture
Project. All construction activities would be required to comply with applicable policies, standards, and
regulations to ensure there are no hazards related to the routine use, disposal, transport, or accidental
release of hazardous materials (California Occupational Safety and Health Administration [OSHA]
requirements, Title 8 and 22 of the Code of California Regulations). All excavated fill and native soil
material would be disposed in accordance with applicable codes and regulations and the transport and
disposal of these materials is not expected to create a significant hazard to construction workers or the
nearby community.
According to EnviroStor and GeoTracker,. no hazardous contamination sites are located on the project
site. The Mantegani site and Mazzanti site both completed cleanups and were certified; therefore, they do
not present a danger of contamination. While arsenic levels were above the Commercial Shallow Soil
exposure ESL and Any Land Use/Any Soil Depth Exposure for a Construction Worker ESL, throughout
California arsenic levels have been found higher than ESLs due to historic chemical usage and from its
presence in local bedrock materials, which have been used as import fill (Fugro Consultants, Inc. 2016).
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The original pool building was constructed and opened in 1970. All buildings built before 1978 are
presumed to contain lead paint. The County or its Contractor must develop and implement a demolition
debris management and disposal plan for the non-Resource Conservation and Recovery Act hazardous
materials that are to be removed from the project site per compliance with County waste diversion
requirements in San Mateo County Code of Ordinances, Section 4.105.030 (100 percent of inert solids
and at least 50 percent of the remaining construction and demolition debris tonnage). The plan must be
designed to prevent releases of hazardous materials in quantities that could pose a risk to human health
and the environment, as determined using appropriate BAAQMD, RWQCB, DTSC, and/or other
appropriate agency screening thresholds. Compliance with state and federal requirements and
implementation of the debris management and disposal plan specified in Mitigation Measure HAZ-1
would ensure the project has a less-than-significant impact on the public or the environment related to
disposal of hazardous materials. The impact is less than significant with mitigation incorporated.
Mitigation Measure HAZ-1:
The County or its Contractor must develop and implement a demolition debris management and disposal
plan for the non-Resource Conservation and Recovery Act hazardous materials that are to be removed
from the project site per compliance with County waste diversion requirements in San Mateo County
Code of Ordinances, Section 4.105.030 (100 percent of inert solids and at least 50 percent of the
remaining construction and demolition debris tonnage). The plan must be designed to prevent releases of
hazardous materials in quantities that could pose a risk to human health and the environment, as
determined using appropriate BAAQMD, RWQCB, DTSC, and/or other appropriate agency screening
thresholds.
Mitigation Measure HAZ-2:
The construction contractor (as required by the contract specifications) shall develop a Hazardous
Materials Contingency Plan (HMCP) that includes standard construction measures required by federal,
state, and local policies for the handling of potential hazardous materials and removal of on-site debris.
The HMCP shall include the implementation of a Waste Management Plan (WMP) for the management
of all construction waste, and a Safety Management Plan (SMP) to minimize construction worker’s
exposure to dust emissions and emissions that have the potential to contain hazardous concentrations of
arsenic. At a minimum, this plan shall include the following:
a. Soils on the project site should be tested for arsenic and organochlorine pesticides prior to
grading and excavation.
b. If contaminated soils or other hazardous materials are encountered during any soil moving
operation during construction, the HMCP shall be implemented.
c. Instruct workers on recognition and reporting of materials that may be hazardous.
d. Minimize delays by continuing performance of the work in areas not affected by hazardous
materials operations.
e. Identify and contact subcontractors and licensed personnel qualified to undertake storage,
removal, transportation, disposal, and other remedial work required by, and in accordance
with, laws and regulations.
f. Forward to engineer, copies of reports, permits, receipts, and other documentation related to
remedial work.
g. Notify such agencies as are required to be notified by laws and regulations within the time
stipulated by such laws and regulations.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
44
h. File requests for adjustments to contract time and contract price due to the finding of
hazardous materials in the work site in accordance with conditions of contract.
Implementation of a mitigation measures HAZ-1, Demolition Debris Management and Disposal Plan, and
HAZ-2, Hazardous Materials Contingency Plan, would reduce potentially significant impacts from
exposure to soil contaminants, and elements of building debris such as lead paint to less than significant
levels.
e) For a project located within an airport land use plan or, where such a plan has not
been adopted, within two miles of a public airport or public use airport, would the
project result in a safety hazard or excessive noise for people residing or working
in the project area?
Less than Significant. The project is located approximately 2.1 miles northeast of the San Francisco
International Airport (SFO) and is within the jurisdiction of the SFO Airport Land Use Compatibility Plan
(ALUCP). The project is located within the boundaries of two subareas of Airport Influence Area B
(Figure 6).
The 14 Code of Federal Regulation (CFR) Part 77 Subpart C. Conical Surface zone establishes
obstruction standards for the airspace around airports including approach zones, conical zones,
transitional zones, and horizontal zones known as “imaginary surfaces.” The Federal Aviation
Administration (FAA) considers objects penetrating these surfaces as obstructions to navigation and
requires marking and lighting them for avoidance. The project site is located in an area that would require
clearance measures of structures between 100 and 150 feet above ground surface (City/County
Associations of Governments of San Mateo County [C/CAG] 2012). Project structures would have a
maximum height of approximately 30 feet above ground surface; therefore, it would not impact the
conical surface zone and no impact would occur. The second subarea (Outer Boundary for TERPS
approach One Engine Inoperative (OEI) departure surfaces) is a safety zone for airplane approach and
departure areas. It also identifies imaginary airspace surfaces (FAA Order 8260.3B, U.S. Standard for
Terminal Instrument Procedures [TERPS]) designed to ensure the safe separation of aircraft operating
under instrument procedures from man-made and natural obstructions. The critical aeronautical surfaces
where the project is located are more than 150 feet above ground level (C/CAG 2012). Project structures
would have a maximum height of approximately 30 feet above ground surface; therefore the project
would not impact the TERPS imaginary airspace surfaces and this impact would be less than significant.
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Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
46
f) Would the project impair implementation of or physically interfere with an adopted
emergency response plan or emergency evacuation plan?
Less than Significant. A significant impact may occur if a project were to interfere with roadway
operations used in conjunction with an emergency response plan or emergency evacuation plan or would
generate sufficient traffic to create traffic congestion that would interfere with the execution of such a
plan.
During short-term construction activities including the associated roadway improvements, partial or
complete road closures may be required along both Tennis Drive and W. Orange Avenue to accommodate
utility trenching for installation of storm drains, domestic water, and fire water lines, and road
improvements and striping. Closures would not impact individual access to other properties. The City’s
General Plan does not identify emergency evacuation routes. W. Orange Avenue is identified as an
arterial boulevard and Tennis Drive is identified as a collector street.
During the construction phase, the City would require an encroachment permit for any temporary
activities that would affect the public right-of-way. Encroachment permit conditions would include a
traffic control plan with temporary procedures for emergency access. Additionally, in the event of
complete or partial lane closures, sufficient alternative routes exist near the facility and the project would
not interfere or result in inadequate emergency access. Therefore, the project would not impair the
implementation of or physically interfere with an emergency response plan or emergency evacuation plan,
and this impact would be less than significant.
g) Would the project expose people or structures, either directly or indirectly, to a
significant risk of loss, injury or death involving wildland fires?
No Impact. A significant impact may occur if a project is located in proximity to wildland areas and
would pose a potential fire hazard, which could affect persons or structures in the area in the event of a
fire. CalFire maps Fire Hazard Severity Zones (FHSZs) in State Responsibility Areas (SRAs), as well as
Very High FHSZs in Local Responsibility Areas (LRAs). The project site is in an LRA and is under the
jurisdiction of the South San Francisco Fire Department. There are no Very High FHSZs mapped in
South San Francisco (CalFire 2008). San Bruno Mountain, 0.8 mile north of the project site, is in a
Moderate FHSZ in an SRA (CalFire 2022). The project site is regularly maintained by City Park and
Recreation staff and generally lacks combustible native vegetation. The project would replace an
existing public pool and aquatic center with a new pool complex. It would not draw additional people to
an area subject to wildland fires. Therefore, no impact would occur.
X. Hydrology and Water Quality
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Violate any water quality standards or waste
discharge requirements or otherwise substantially
degrade surface or ground water quality?
܆܆܈܆
(b) Substantially decrease groundwater supplies or
interfere substantially with groundwater recharge such
that the project may impede sustainable groundwater
management of the basin?
܆܆܈܆
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
47
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
(c) Substantially alter the existing drainage pattern of the
site or area, including through the alteration of the
course of a stream or river or through the addition of
impervious surfaces, in a manner which would:
(i) Result in substantial erosion or siltation on- or
off-site; ܆ ܆ ܈ ܆
(ii) Substantially increase the rate or amount of
surface runoff in a manner which would result in
flooding on- or off-site;
܆ ܆ ܈ ܆
(iii) Create or contribute runoff water which would
exceed the capacity of existing or planned
stormwater drainage systems or provide
substantial additional sources of polluted runoff;
or
܆ ܆ ܈ ܆
(iv) Impede or redirect flood flows? ܆ ܆ ܈ ܆
(d) In flood hazard, tsunami, or seiche zones, risk release
of pollutants due to project inundation? ܆ ܆ ܈ ܆
(e) Conflict with or obstruct implementation of a water
quality control plan or sustainable groundwater
management plan?
܆ ܆ ܈ ܆
Environmental Evaluation
a) Would the project violate any water quality standards or waste discharge
requirements or otherwise substantially degrade surface or ground water quality?
Less than Significant. Activities associated with construction of the project could have a significant
impact if they resulted in violation of waste discharge requirements under the San Francisco Bay
RWCQB’s Municipal Regional Stormwater NPDES Permit from contaminated runoff entering the
stormwater system. The project site is not adjacent to any water bodies. Colma Creek, approximately
40 feet southwest of the project, is the closest water body.
The SMCWPPP is a partnership of C/CAG, each incorporated city and town in the County, and the
County, which share a common NPDES permit. The Municipal Regional Stormwater NPDES Permit was
issued by the San Francisco Bay RWQCB (San Francisco Bay RWQCB 2022) in compliance with the
San Francisco Bay Basin Water Quality Control Plan and the NPDES Program. Participating agencies
(including the County and City) must comply with the provisions of the countywide permit by ensuring
that new development and redevelopment mitigate, to the maximum extent practicable, water quality
impacts from stormwater runoff during both construction and operational periods of projects (County of
San Mateo 2023).
CONSTRUCTION
The proposed project would disturb greater than 1 acre of land and must obtain an individual NPDES
General Construction Permit for the stormwater discharges during construction and implement a SWPPP
for the site. The SWPPP would include the implementation of erosion and sedimentation BMPs,
monitoring, and reporting that would reduce surface and groundwater quality impacts. It must also
include a drainage control plan with site-specific BMPs that are designed to prevent runoff from
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
48
construction areas to reduce potential impacts to surface water quality during project construction.
The plan would also include design elements and BMPs for construction areas, such as fueling and
equipment washing areas and trash and hazardous material storage areas. No construction would occur
during major rain events, minimizing any chance of runoff from the site. Major rain events would be
considered as a prediction of 0.25 inch or more in 24 hours.
As described in Section 2.5, Construction, construction of the aquatic center would require demolition of
the existing pool building, pool, and parking area; clearing and grading activities; filling portions of the
project site to elevate them out of the floodplain; construction of the building, pools, and parking area;
and trenching for utilities. The project would result in temporary disturbance of approximately 6.5 acres
on-site, plus an additional approximately 2 acres for temporary staging, and would permanently develop
approximately 6.5 acres.
Construction activities associated with the aquatic center would require the presence of construction
vehicles, heavy equipment and materials, and construction crews. Construction activity, including
demolition, site grading, excavation, and the construction of the aquatic center, would result in temporary
soil erosion that could temporarily affect water quality. In addition to stormwater runoff and potential
resulting water quality and sedimentation impacts, there is the potential for hazardous materials, including
petroleum products associated with diesel vehicle and equipment use and contaminants from paving
materials, concrete mixing, pouring and washout, and sanitary facilities, to leave the site.
OPERATION
Following construction, the project site would be restored and landscaped surrounding the new aquatic
center, including stormwater retention and treatment areas, thereby reducing any future water quality
impacts. Approximately 1,855 square feet of LID treatment areas would be added on-site. Stormwater
would be directed to these areas before discharging to the existing storm drain in W. Orange Avenue.
The project would comply with all stormwater requirements of the SWRCB and the County, and would
include bioretention basins and treatment areas adequate to treat runoff from the additional impervious
surface area, Therefore, water quality impacts associated with the new aquatic center would be less than
significant
b) Would the project substantially decrease groundwater supplies or interfere
substantially with groundwater recharge such that the project may impede
sustainable groundwater management of the basin?
Less than Significant. California Water Service Company (CalWater) provides water service to the City.
CalWater obtains the majority of its water from the San Francisco Water Department and supplies
approximately 1,534 acre-feet3 per year (AFY) to the City from local groundwater wells. The project
overlays the Westside Groundwater Basin (DWR Basin 2-35). Municipal and agricultural groundwater
wells in the Basin range from depths of 130 to 825 feet (Department of Water Resources [DWR] 2006).
CalWater operates groundwater wells in the Basin that serve its South San Francisco District (CalWater
2021). The basin is not adjudicated and DWR has determined the Basin is not in a state of critical
overdraft and is a low priority for adjudication (CalWater 2021).
A potentially significant impact would occur if a project includes deep excavations resulting in the
potential to interfere with groundwater movement, the withdrawal of groundwater, or paving of existing
permeable surfaces important to groundwater recharge. The project would excavate to a depth of 12 feet,
which would not be likely to significantly impact the groundwater table or groundwater movement. In the
3 An acre-foot is a volume of water equal to a sheet of water 1 acre in area and 1 foot thick, or 43,560 cubic feet of water.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
49
adjacent Stormwater Capture Project, groundwater was determined to be at a minimum depth of
approximately 12 to 13 feet below ground surface (City of South San Francisco 2019). Excavations for
the pools and utilities would be limited in scope but may encounter shallow groundwater which would
require dewatering during construction. However, dewatering for construction would be short term and
temporary, and construction would not include excavation to depths that could affect groundwater
movement or well production; therefore, construction of the project would be unlikely to significantly
impact groundwater movement and this impact would be less than significant.
c) Would the project substantially alter the existing drainage pattern of the site or
area, including through the alteration of the course of a stream or river or through
the addition of impervious surfaces, in a manner which would:
c-i) Result in substantial erosion or siltation on- or off-site?
Less than Significant. Planned earthwork and grading activities on the project site would involve a
maximum total cut and fill of approximately 10,670 cubic yards – approximately 9,700 cubic yards of cut
and 970 cubic yards of fill. The project site is essentially flat, and all project components would be
required to implement erosion control measures, as discussed under Section 3.X(a).
Construction of the project would include implementation of SWPPP BMPs under the State Water Board
General Construction Permit and SMCWPPP. Implementation of the SWPPP would reduce potential
erosion and sedimentation from project construction to less-than-significant levels.
Operation of the project would result in an increase of impervious surface compared to existing
conditions of approximately 17,215 square feet. Therefore, the project would qualify as a C.3 regulated
project under the SMCWPPP. Under the C.3 program, the project is required to incorporate controls to
reduce pollutant runoff in stormwater. Most controls are required to be LID measures, which include:
biotreatment areas, flowthrough planters, rain barrels or cisterns, green roofs, pervious pavement, or other
stormwater treatment measures designed to infiltrate or detain stormwater runoff, so that all of the runoff
required to be treated per the stormwater permit soaks into the ground, is stored for irrigation or in-
building use, evaporates, or is taken up by plants. These requirements apply to most projects that create
and/or replace 5,000 square feet or more of impervious surface area (FlowstoBay 2023).
The aquatic center and surrounding area would drain to new LID treatment areas on-site, including
vegetated stormwater channels. The project will install a new connection to the existing storm drain main
on W. Orange Avenue, which ultimately outfalls to Colma Creek; therefore, the project would not
substantially alter the existing drainage pattern in a manner that would cause erosion. Compliance with
the Municipal Regional Stormwater Permit and Planning Department requirements will reduce drainage
and stormwater impacts to a less-than-significant level. Therefore, the project would not substantially
alter the existing drainage pattern of the site resulting in substantial erosion or siltation, and the impact
would be less than significant.
c-ii) Substantially increase the rate or amount of surface runoff in a manner which
would result in flooding on- or off-site?
Less than Significant. A significant impact may occur if a project results in increased runoff volumes
during construction or operation of the project that would result in flooding conditions affecting the
project site or nearby properties. As described in Sections 3.X(a) and 3.10(b), the project would result in
an increase in impervious surface area of approximately 17,215 square feet and would construct new
vegetated stormwater channels which would capture runoff from the additional square footage resulting
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
50
from a 10-year, 2-hour storm event.4 Compliance with the Municipal Regional Stormwater Permit and
Planning Department requirements would reduce drainage and stormwater impacts to a less-than-
significant level. Therefore, the project would not substantially alter the existing drainage pattern of the
site resulting in a substantial increase in the rate or amount of surface runoff in a manner which would
result in flooding on- or off-site, and the impact would be less than significant.
c-iii) Create or contribute runoff water which would exceed the capacity of existing or
planned stormwater drainage systems or provide substantial additional sources
of polluted runoff?
Less than Significant. As described in Sections 3.X(a) and 3.X(b), the project would result in an increase
in impervious surface area of approximately 17,215 square feet and would construct new vegetated
stormwater channels that would have adequate capacity to contain runoff from the additional square
footage. The LID treatment areas would discharge to the stormwater system in W. Orange Avenue, which
discharges to Colma Creek. Compliance with the Municipal Regional Stormwater Permit and Planning
Department requirements would reduce drainage and stormwater impacts to a less-than-significant level.
Therefore, the project would not exceed the capacity of the existing and/or planned stormwater drain
system or provide substantial additional sources of polluted runoff, and the impact would be less than
significant.
c-iv) Impede or redirect flood flows?
Less than Significant. A significant impact may occur if a project were located in a flood hazard area
and would impede or redirect flood flows. According to the FEMA Flood Insurance Rate Map, the project
site is in 100-year flood hazard zone AE, with a base flood elevation of approximately 26 feet above
mean sea level (amsl). However, one of the objectives of the recently completed Stormwater Capture
Project is to alleviate localized flooding in lower reaches of Colma Creek. The water capture facility
would divert approximately 5 percent of the water flows from Colma Creek through an inlet structure
approximately 870 feet west and upstream of the proposed project. The underground reservoir is capable
of holding 7.5 acre-feet (2.44 million gallons) and stored water would be used for irrigation and
infiltration with a 0.5-inch-per-hour drawdown rate. Excess water would discharge to Colma Creek via an
outfall pipe situated immediately south of the existing basketball courts and approximately 500 feet
southwest of the proposed project. The storm water capture project will reduce flows in the creek and
reduce overall flood risks down-stream, thereby reducing flood risk on the project site and surrounding
neighborhoods The FEMA Flood Insurance Rate Map has not been updated since the Water Capture
Project was completed, and the new 100-year flood elevation is calculated to be 23.8 feet amsl. The
existing elevation in the vicinity of the existing parking lot is between 25.3 and 25.5 feet amsl, therefore,
the project site would be unlikely to be vulnerable to flooding from Colma Creek. The project would be
required to raise the floor of the pool building to one foot above flood stage or 24.8 feet amsl. In grading
the site, the project would raise the floor of the pool facilities to 26.25 feet amsl, which is above the 100-
year floodplain. Therefore, the project would redirect flood flows around the pool building. However, the
difference in elevation would be up to approximately one foot compared to existing conditions, therefore,
the effect of redirecting flood flows would be minimal and this impact would be less than significant.
4 A 10-year, 2-hour storm means a storm of 2 hours duration that is capable of producing a volume of rainfall expected to be
equaled or exceeded on the average of once in 10 years.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
51
d) In flood hazard, tsunami, or seiche zones, would the project risk release of
pollutants due to project inundation?
Less than Significant. The project site is in a FEMA flood hazard zone AE with a base flood elevation of
approximately 23.8 feet (Kim-Van Truong 2023). Flood hazard zone AE is defined as an area with a 1
percent annual chance of flooding, and with a calculated base flood elevation (FEMA 2023).
Chapter 15.56 of the City’s Municipal Code includes regulations to minimize damage to public facilities
and utilities from flood events. Section 15.56.030(b) requires that facilities vulnerable to floods be
protected against flood damage at the time of initial construction. Under the municipal code, the
floodplain administrator must review all development permits to determine that the site is reasonably safe
from flooding; that the proposed development does not adversely affect the carrying capacity of areas
where base flood elevations have been determined but a floodway has not been designated; and that
documentation of certification for the project meets requirements for construction in a flood zone.
Under Section 15.56.160(c)(2), all nonresidential construction in flood zones must be either elevated or
floodproofed. The pool facilities will be elevated above the flood hazard zone as part of the grading work;
therefore, impacts from flooding would be less than significant. The project site is not located in either a
seiche or tsunami zone (City of South San Francisco 2022a). A seiche is a standing wave that oscillates
back and forth in an enclosed or partially enclosed body of water. Seiche waves may be caused by
earthquakes, and the project is in an area with high seismic activity. Although the project is not in an
identified seiche zone, earthquake ground shaking could cause seiche waves in the new pools that could
potentially splash out and cause flooding inside the facility. The pools are relatively small and seiche
waves within the pools would not be likely be large enough to cause damage. The project would follow
the geotechnical recommendations during design and construction to ensure seismic stability. Therefore,
impacts from seiche waves would be less than significant. The project is not located in a tsunami zone;
therefore, no impact from tsunami waves would occur.
e) Would the project conflict with or obstruct implementation of a water quality
control plan or sustainable groundwater management plan?
Less than Significant. The proposed project will abide by all requirements of the San Mateo Countywide
Water Pollution Prevention Program and the Municipal Regional Permit issued by the San Francisco Bay
RWQCB. The project would not conflict with the Water Quality Control Plan for the San Francisco Bay
Basin because it would comply with all applicable requirements of the MRP. The project site is not
located in a groundwater basin and would not directly use groundwater; therefore, it would not conflict
with or obstruct the implementation of a sustainable groundwater management plan. Impacts would be
less than significant.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
52
XI. Land Use and Planning
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Physically divide an established community? ܆܆܆܈
(b) Cause a significant environmental impact due to a
conflict with any land use plan, policy, or regulation
adopted for the purpose of avoiding or mitigating an
environmental effect?
܆܆܆܈
Environmental Evaluation
a) Would the project physically divide an established community?
No Impact. The project site is located in Orange Memorial Park, which is an urban City park. The site is
zoned as Parks and Recreation (PR) under the City’s General Plan and zoning code. Surrounding land
uses are predominantly Parks and Recreation, Low Density Residential (RL), Medium Density
Residential (RM) Downtown Residential – Low (DRL), Downtown Residential – Medium (DRM), and
High Density Residential (RH) (City of South San Francisco 2023f).
The project would replace an existing aquatic center and parking lot with a new aquatic center and
parking lot in an existing City park. Therefore, the project would not change the nature of land uses or
physically divide an established community. No impact would occur.
b) Would the project cause a significant environmental impact due to a conflict with
any land use plan, policy, or regulation adopted for the purpose of avoiding or
mitigating an environmental effect?
No Impact. The project would not conflict with any land use plan, policy, or regulation. The project
fulfills the City’s 2040 General Plan Policy PR-7.6, which seeks to modernize the aquatics facilities at
Orange Memorial Park and expand the pools in order to enable the expansion of aquatics programming.
The project also includes EV charging stations (Policy PR-7.11) and integrates sustainable landscape
strategies (Policy PR-7.8) including planting 36 trees, using low-water landscaping, and using green
infrastructure for stormwater capture.
The project is located in the Airport Influence Area of San Francisco International Airport, in the 14 CFR
Part 77 Subpart C. Conical Surface zone and the Outer Boundary for TERPS approach OEI departure
surfaces. As discussed in Section 3.IX(e), both areas define the safe height of structures in the zones. In
both cases, the safe height is more than 150 feet above ground surface. The new aquatic center would be
approximately 30 feet in height; therefore, the project would be well below the imaginary airspace
surfaces and no impact would occur.
Therefore, the project would not conflict with any plans, policies, or regulations and no impact would
occur.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
53
XII. Mineral Resources
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Result in the loss of availability of a known mineral
resource that would be of value to the region and the
residents of the state?
܆܆܆܈
(b) Result in the loss of availability of a locally- important
mineral resource recovery site delineated on a local
general plan, specific plan or other land use plan?
܆܆܆܈
Environmental Evaluation
a) Would the project result in the loss of availability of a known mineral resource that
would be of value to the region and the residents of the state?
No Impact. A significant impact may occur if a project site is located in an area used or available for
extraction of a regionally important mineral resource, if a project would convert an existing or future
regionally important mineral extraction use to another use, or if a project would affect access to a site
used or potentially available for regionally important mineral resource extraction.
The project is not located in a mineral resource zone identified by the state (Stinson et al. 1982).
Therefore, no impacts to mineral resources of statewide or regional significance would occur.
b) Would the project result in the loss of availability of a locally- important mineral
resource recovery site delineated on a local general plan, specific plan or other
land use plan?
No Impact. A significant impact would occur if a project were located in an area used or available for
extraction of a locally important mineral resource and the project converted an existing or potential future
locally important mineral extraction use to another use, or if a project affected access to a site in use or
potentially available for locally important mineral resource extraction.
The project is located in a City park in the middle of an urban area. Neither the project site nor the
surrounding area is identified as an area containing mineral deposits of local significance in the City’s
2040 General Plan. Therefore, no impacts to mineral resources of local significance would occur.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
54
XIII. Noise
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project result in:
(a) Generation of a substantial temporary or permanent
increase in ambient noise levels in the vicinity of the
project in excess of standards established in the local
general plan or noise ordinance, or applicable
standards of other agencies?
܆܈܆܆
(b) Generation of excessive groundborne vibration or
groundborne noise levels? ܆܆܈܆
(c) For a project located within the vicinity of a private
airstrip or an airport land use plan or, where such a
plan has not been adopted, within two miles of a
public airport or public use airport, would the project
expose people residing or working in the project area
to excessive noise levels?
܆܆܈܆
Environmental Evaluation
Municipal Code Chapter 8.32 sets regulations for exterior noise levels (Section 8.32.030). Maximum
permissible sound levels in Table 3 are the standards for a cumulative period of 30 minutes in any hour.
The maximum allowable noise level is determined by the land use category of the nearest sensitive
receptor properties. The Noise Ordinance limits noise levels in single-family or multiple-family
residential areas to 60 decibels (dBA) between the hours of 7 a.m. and 10 p.m. Section 8.32.030(a) states
it is unlawful for any person to operate any source of sound at any location within the City, which causes
the noise level when measured on any other property to exceed:
1. The noise level standard for the specified land use for a cumulative period of more than
30 minutes in any hour;
2. The noise level standard plus 5 dB for a cumulative period of more than 15 minutes in any hour;
3. The noise level standard plus 10 dB for a cumulative period of more than 5 minutes in any hour;
4. The noise level standard plus 15 dB for a cumulative period of more than 1 minute in any hour; or
5. The noise level standard or the maximum measured ambient level, plus 20 dB for any period of
time.
Table 3. Noise Level Standards
Land Use Category Time Period Noise Level (dB)
Single-family or duplex residential 10 p.m. to 7 a.m. 50
7 a.m. to 10 p.m. 60
Multiple-family residential or mixed residential/commercial 10 p.m. to 7 a.m. 55
7 a.m. to 10 p.m. 60
Commercial districts 10 p.m. to 7 a.m. 60
7 a.m. to 10 p.m. 65
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Land Use Category Time Period Noise Level (dB)
Parks districts 10 p.m. to 7 a.m. 70
7 a.m. to 10 p.m. 70
dB = decibels
Source: South San Francisco Municipal Code Section 8.32.030 (2023)
Municipal Code Section 8.32.040 regulates interior noise limits for multifamily residential property.
Section 8.32.050(d) indicates that a noise level more than 10 dB above the level allowed by Section
8.32.030 measured 3 feet from any wall, floor, or ceiling inside any unit on the same property when the
windows and doors of the unit are closed is unallowable.
The City’s Municipal Code Section 8.32.050 allows construction activities that are authorized by a valid
City permit between the hours of 8:00 a.m. and 8:00 p.m. on weekdays, between 9:00 a.m. and 8:00 p.m.
on Saturdays, and between 10:00 a.m. and 6:00 p.m. on Sundays and holidays. Other hours may be
authorized by the construction permit if the project meets one of the following criteria:
(1) No individual piece of equipment shall produce a noise level exceeding 90 dB at a distance of
25 feet. If the device is housed within a structure or trailer on the property, the measurement
shall be made outside the structure at a distance as close to twenty-five feet from the
equipment as possible; or
(2) The noise level at any point outside of the property plane of the project shall not exceed 90
dB (Municipal Code Section 8.32.050).
According to Municipal Code Section 8.32.060, Exception Permits, if the applicant can show to the City
Manager, or the Manager’s designee, that a diligent investigation of available noise abatement techniques
indicates that immediate compliance with the requirements of this chapter would be impracticable or
unreasonable, a permit to allow exception from the provisions contained in this chapter may be issued,
with appropriate conditions to minimize the public determinant caused by such exceptions. Any such
permit shall be of as short a duration as possible, but in no case for longer than 6 months. These permits
are renewable upon a showing of good cause, and shall be conditioned by a schedule for compliance and
details of compliance methods in appropriate cases.
a) Would the project result in generation of a substantial temporary or permanent
increase in ambient noise levels in the vicinity of the project in excess of
standards established in the local general plan or noise ordinance, or applicable
standards of other agencies?
Less than Significant with Mitigation. The project would result in a significant impact if it would:
1. Allow construction to occur outside of hours specified in the permit,
2. Produce construction noise in excess of 90 dB at a distance of 25 feet or exceed 90 dB at any
point outside the property plane of the project, or
3. Produce operational noise in excess of 60 dB at neighboring residential properties.
Residences, schools, hotels, child care facilities, and convalescent facilities are typically considered noise
sensitive land uses. The nearest potential residential receptors to the project site are single-family homes
and duplexes located approximately 70 feet north on Tennis Drive, 80 feet north on Circle Court, 100 feet
east on Amberwood Circle, and 140 feet northeast on Railroad Avenue. In addition, recreational users of
the children’s playground facility immediately west, users of the Fernekes Building approximately 150
Orange Memorial Park Aquatic Center Project
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feet southwest (including spring and summer camps), and playing fields south of the project would be
subjected to construction noise. The maximum ambient sound levels within residential land use areas are
assumed to be less than 65 dBA (City of South San Francisco 2010).
Primary noise sources within the vicinity of the project site include vehicle traffic from El Camino Real
and local street traffic from W. Orange Avenue, Tennis Drive, North Canal Street, Circle Court, Railroad
Avenue, surrounding roadways, and outdoor recreational uses. Secondary noise sources include aircraft
overflights from SFO, distant train noise from approximately Caltrain (0.9 mile to the east), and distant
traffic noise from U.S. Highway 101 (approximately 1 mile to the east).
Project construction would include use of standard construction equipment, including excavators, graders,
tractors, loaders, pavers, jackhammers, hoe rams, and cement trucks (Table 4). No pile driving is
proposed. Noise from project construction would come from two general sources. Vehicles carrying the
construction crew commuting to the site, as well as truck transport of construction equipment and
materials to the site, would incrementally increase noise levels on roads leading to the site. In addition,
use of heavy construction equipment and hand tools during construction would incrementally increase
noise levels on the site. Worker commute and truck trips would result in intermittent noise increases on
local roads but would not affect long-term ambient noise levels.
The second type of short‐term noise impact is related to noise generated during demolition, excavation,
grading, and construction on the project site. Construction is performed in discrete steps, or phases, each
with its own mix of equipment and, consequently, its own noise characteristics. These various sequential
phases would change the character of the noise generated on-site. Therefore, the noise levels vary as
construction progresses. Despite the variety in the type and size of construction equipment, similarities in
the dominant noise sources and patterns of operation allow construction‐related noise ranges to be
categorized by work phase. Louder types of construction equipment include graders, scrapers, and auger
drill rigs as well as concrete saws, concrete grinders and hoe rams (see Table 4). The loudest phase of
construction would likely be the demolition of the existing pool facility, followed by the excavation and
grading phases.
Table 4. Typical Construction Equipment Noise Levels
Construction Equipment Noise Level (dB Lmax1 at 50 feet)
Air compressor 78
Backhoe 78
Chain saw 84
Compactor 84
Concrete grinder 90
Concrete mixer truck 79
Concrete saw 90
Crane 81
Dozer 82
Dump truck 76
Flat bed truck 74
Front end loader 79
Generator 81
Grader 85
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Construction Equipment Noise Level (dB Lmax1 at 50 feet)
Hoe ram 90
Jackhammer 89
Paver 77
Roller 80
Scraper 84
Lmax is the instantaneous maximum noise level for a specified period of time.
Source: Federal Highway Administration (2006)
For the proposed project, the combined loudest pieces of equipment , during demolition and grading
could reach 90 dBA outside the property plane of the construction activity (U.S. Department of
Transportation [USDOT]/Federal Highway Administration 2006), which is the noise limit defined in the
City code . These higher noise levels could be generated during (1) the use of concrete saws and hoe ram
during demolition of the old pool facility, and (2) the use of earth-moving equipment and excavation
activities and grading.
If a valid City permit is obtained, construction activities would comply with the South San Francisco
Noise Regulations, as long as no individual piece of equipment produces noise levels that exceed the
construction noise limit of 90 dB at the property line.
Since the project would replace an existing pool complex, operational noise would not vary significantly
from the existing conditions.
With implementation of the following Mitigation Measure NOI-1, the project would result in less than
significant impacts related to generation of a substantial temporary or permanent increase in ambient
noise levels that are in excess of standards established in the local general plan or noise ordinance, or
applicable standards of other agencies:
Mitigation Measure NOI-1:
The following measures shall be implemented to reduce construction noise impacts:
a. Secure a valid City permit for construction noise levels that could potentially temporarily
exceed 90 dB at the park’s property line in order to comply with the South San Francisco
Noise Regulations.
b. Construction equipment and haul trucks shall use the best available noise control techniques,
including improved mufflers, use of intake silencers, ducts, engine enclosures and
acoustically attenuating barriers, curtains, and shields.
c. Site stationary noise sources, such as air compressors and generators, as far from adjacent
sensitive receptors as possible. These sources shall be muffled and enclosed within temporary
sheds or incorporate insulation barriers, shields, or other attenuating measures.
d. If impact equipment and machinery are used such as jack hammers, pavement breakers, and
rock drills, they shall be hydraulically or electrically powered to avoid noise associated with
air compressors or pneumatically powered tools. If the use of pneumatically powered tools is
necessary, an exhaust muffler shall be installed on the air compressor. Such a muffler can
lower noise levels from the exhaust by up to 10 dBA. Similarly, the installation of external
jackets on the tools can reduce noise levels by 5 dBA.
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e. Material stockpiles and mobile equipment, staging, and parking areas shall be located as far
as possible from noise sensitive receptors (i.e. adjacent tot lot and summer camps in the
Ferneke Building.
f. Identify a liaison that represents the property owners located adjacent to the project site along
Tennis Drive. This liaison shall be contacted with concerns regarding construction noise.
The liaison’s contact information shall be clearly displayed at the construction location on
posted signs informing the public of the construction hours and the liaison to contact in the
event of a noise-related problem.
g. Notify all adjacent landowners and occupants of the properties adjacent to the project site of
the anticipated construction schedule at least 2 weeks prior to ground-disturbing activities.
h. Hold a pre-construction meeting with the Contractor Superintendent, General Contractor, and
City inspectors to confirm that all noise mitigation measures (including signage on
construction hours, valid City exception permit, and liaison contact information) are
completed.
b) Would the project result in generation of excessive groundborne vibration or
groundborne noise levels?
Less than Significant. Groundborne vibration is the perceptible movement of building floors, rattling
windows, and doors, shaking of items on shelves or walls, and rumbling sounds. For groundborne
vibration, according to the Federal Transit Administration (FTA) guidelines, a vibration level of 65
vibration decibels (VdB) is the threshold of perceptibility for humans.5 For a significant impact to occur,
vibration levels must exceed 80 VdB during infrequent events (USDOT/FTA 2018). Construction
activities (e.g., ground-disturbing activities, including movement of heavy construction equipment and
hauling of demolition debris and soil from the project site) may generate localized groundborne vibration
and noise. Blasting or pile-driving activities would not occur during construction of the project. A hoe
ram, jackhammers and concrete saws would be used during demolition of the existing parking lot and
pool building. A vibratory roller would be used for parking lot construction. Generally, construction-
related groundborne vibration is not expected to extend beyond 25 feet from the generating source.
Construction equipment for demolition of the existing parking lot and pool building which could include
jackhammers, concrete saws, and a compactor machine (vibratory pad or drum roller). The closest
sensitive receptors are residences approximately 75 feet from the northern edge of the project area. The
activities closest to the adjacent residences include the movement of haul trucks. Hauling of soils and
debris could generate vibrations along local haul routes. Assuming the use of 12-cubic-yard dump trucks,
the project is anticipated to require a total of approximately 875 round-trip trucks trips to offhaul soil and
demolition debris over the 18-month construction period. The maximum haul trips per day would likely
be 8 one-way trips per day during the parking lot demolition and building demolition phases. The
movement of up to 8 haul trucks per day would not generate significant amounts of groundborne
vibration, therefore this impact would be less than significant.
c) For a project located within the vicinity of a private airstrip or an airport land use
plan or, where such a plan has not been adopted, within two miles of a public
airport or public use airport, would the project expose people residing or working
in the project area to excessive noise levels?
Less than Significant. The nearest airport to the project site is SFO, located approximately 2.1 miles to
the southeast. According to the City’s General Plan EIR, aircraft noise from SFO is the primary source of
5 VdB is the vibration velocity level expressed in decibels relative to 1 micro-inch per second (1 × 10-6 inch per second).
Orange Memorial Park Aquatic Center Project
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transportation noise in the City. The project site is located within the SFO ALUCP Airport Influence Area
B (Figure 6), which is based on a combination of the outer boundaries of the noise compatibility and
airport safety zones (C/CAG 2012). However, the project site is located outside the aircraft noise
exposure contour (CNEL Contour; see Figure 6). Therefore, because the project is outside the airport
noise exposure contour and would not introduce residents or employees to the area, it would not expose
people residing or working in the area to excessive noise levels associated with the nearby airport and
noise impacts would be less than significant.
d) Population and Housing
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Induce substantial unplanned population growth in an
area, either directly (for example, by proposing new
homes and businesses) or indirectly (for example,
through extension of roads or other infrastructure)?
܆܆܆܈
(b) Displace substantial numbers of existing people or
housing, necessitating the construction of
replacement housing elsewhere?
܆܆܆܈
Environmental Evaluation
a) Would the project induce substantial unplanned population growth in an area,
either directly (for example, by proposing new homes and businesses) or
indirectly (for example, through extension of roads or other infrastructure)?
No Impact. City and county General Plans develop growth plans and projections for the areas in their
jurisdictions. A significant impact would occur if a project included a General Plan amendment that could
result in an increase in population over that projected in the adopted General Plan, or if a project would
induce substantial growth on the project site or surrounding area.
Construction job opportunities created as a result of the project are not expected to result in any
substantial population growth in the area. The work requirements of most construction projects are highly
specialized so that construction workers remain at a job site only for the time frame during which their
specific skills are needed. Additionally, the construction workers would likely be supplied from the
region’s labor pool. Construction workers would not be likely to relocate their household as a
consequence of working on the project, and as such, significant housing or population impacts would not
result from construction of the project. Therefore, there would be no construction-related population
growth impacts and no impact would occur.
The project would replace an existing aquatics center and parking lot and reconfigure existing soccer
fields; therefore, while the aquatics center will be able to offer additional programs, the project is not
likely to attract more people to Orange Memorial Park and the surrounding area or cause people to move
to the area. Therefore, the project would not introduce new persons to the population, and no impact
would occur.
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b) Would the project displace substantial numbers of existing people or housing,
necessitating the construction of replacement housing elsewhere?
No Impact. The project would replace an existing aquatics center and parking lot and reconfigure
existing soccer fields. Therefore, the project would not displace people or housing, and no impact would
occur.
XIV. Public Services
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Result in substantial adverse physical impacts
associated with the provision of new or physically
altered governmental facilities, need for new or
physically altered governmental facilities, the
construction of which could cause significant
environmental impacts, in order to maintain
acceptable service ratios, response times or other
performance objectives for any of the public services:
Fire protection? ܆܆ ܆ ܈
Police protection? ܆܆܆܈
Schools? ܆܆܆܈
Parks? ܆܆܈܆
Other public facilities? ܆܆܆܈
Environmental Evaluation
a) Would the project result in substantial adverse physical impacts associated with
the provision of new or physically altered governmental facilities, need for new or
physically altered governmental facilities, the construction of which could cause
significant environmental impacts, in order to maintain acceptable service ratios,
response times or other performance objectives for any of the public services:
Fire protection?
No Impact. The project would replace an existing aquatics center and parking lot and reconfigure
existing soccer fields; therefore, it would not increase the population in the area or introduce a hazard. A
significant impact may occur if the South San Francisco Fire Department (SSFFD) could not adequately
serve a project, and a new or physically altered fire station would be necessary. The project area receives
fire protection services from the SSFFD. The SSFFD has three fire stations. The project site is in the
response area for Fire Station 61, which is located at 480 North Canal Street, approximately 0.5 mile
southeast of the project site. In addition, Fire Station 63 is located at 33 Arroyo Drive, approximately 0.57
mile west of the project site (City of South San Francisco 2023h). The project would not increase
population or cause a marked increase in recreational users, and no impact to fire protection services
would occur.
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Police protection?
No Impact. A significant impact may occur if the South San Francisco Police Department (Police
Department) could not adequately serve a project, and a new or physically altered police station would be
necessary. The project area receives law enforcement services from the Patrol Division of the Police
Department. The Patrol Division consists of 40 officers and four patrol beats covering 11 square miles of
the City. The Police Station located at 1 Chestnut Avenue is located approximately 0.4 mile west of the
project site (City of South San Francisco 2023i).
The project would replace an existing aquatic center and parking lot and reconfigure existing soccer
fields; therefore, it would not increase the population in the area or introduce a hazard. The project would
not cause an appreciable increase in recreational users. Therefore, the project would not increase the
demand for public services, including police protection, and no impacts to police protection would occur.
Schools?
No impact. The project area is served by the South San Francisco Unified School District (SSFUSD). A
significant impact may occur if the SSFUSD could not adequately serve a project, and a new or physically
altered school or schools would be necessary. The SSFUSD has nine elementary schools, three middle
schools, three high schools, and an adult education program. Between 2011 and 2021, the enrollment
declined by 1,306 students. Enrollment projections between 2021 and 2030 show an expected decrease in
student population from 8,006 students to 6,759 students; a decrease of 1,247 or approximately 15.6
percent (South San Francisco Unified School District 2022).
The project would replace an existing aquatic center and parking lot and reconfigure existing soccer
fields; therefore, it would not increase the population in the area or cause a marked increase in
recreational users. The project would not increase the demand for public services, including schools, and
no impact would occur.
Parks?
Less than Significant. A significant impact may occur if the project would result in the need for new or
improved parks.
The Orange Pool is the only indoor municipal swimming pool in the City. The pool operates year-round
and 7 days a week. The existing pool was constructed in 1970, and prior to the pandemic, public demand
for aquatic programs has grown year over year, well beyond the pool’s capacity. The pool has exceeded
the typical lifespan for such facilities and is due for replacement (City of South San Francisco 2023c).
The new facility would include two pools—an outdoor, 25-yard, cool water lap pool and an indoor, warm
water, teaching/recreation pool—and would enable the City to expand offerings of recreation activities in
the aquatic center. The existing pool would remain in use until the new pool is completed and would then
be demolished.
While the project would remove a portion of the existing soccer field area, reducing the total area of grass
field area, by about 7,200 square feet, the remaining grass field would be retained and continued to be
designed for recreation use, including soccer practices and games. The project would also temporarily
fence the entire soccer field area for use as a staging area during construction. The field would be returned
to existing conditions after project completion.
Therefore, the proposed project would improve access and opportunities at the aquatic center, continue to
provide grass fields for recreation, and would not create a need for new or improved parks. This impact
would be less than significant.
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Other public facilities?
No impact. A significant impact may occur if the project would result in the need for other new or
improved public facilities. Other public facilities include the Community Civic Campus, which includes a
new Police Operations and 911 Dispatch Center, South San Francisco Main Library, Community
Theater/Council Chamber, and Parks and Recreation facilities.
The project would replace an existing aquatics center at Orange Memorial Park and reconfigure existing
soccer fields. It would not increase the population in the area or cause an increase in recreational users.
Therefore, the project would not increase the demand for public services, including libraries, theater, or
other uses, and no impact would occur.
XV. Recreation
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
(a) Would the project increase the use of existing
neighborhood and regional parks or other recreational
facilities such that substantial physical deterioration of
the facility would occur or be accelerated?
܆ ܆ ܈ ܆
(b) Does the project include recreational facilities or
require the construction or expansion of recreational
facilities which might have an adverse physical effect
on the environment?
܆ ܆ ܈ ܆
Environmental Evaluation
a) Would the project increase the use of existing neighborhood and regional parks
or other recreational facilities such that substantial physical deterioration of the
facility would occur or be accelerated?
Less than Significant. A project would result in a significant impact to parks and recreation services if it
would result in a significant increase in population from adding residential units. The project would
replace an existing aquatic center and reconfigure existing soccer fields. It would not increase the
population in the area or cause an increase in recreational users. It would allow an expansion of services
at the aquatic center and allow the facility to serve more residents.
As noted in Section X, while the project would permanently remove a portion of the existing soccer field
area, reducing the total area of grass field by about 7,200 square feet, the remaining grass field would be
retained and continued to be designed for recreation use, including soccer practices and games. Post-
project, the area would be reduced from three to two soccer fields and the two remaining fields would be
improved. During the 18-month construction period, the entire field area would be fenced off and used for
construction staging, so all three soccer fields would be unavailable.
The existing Orange Aquatic facility was deemed insufficient for the needs of the City’s residents. The
project would more than double the available space for aquatic programs, allowing increased use for
recreation, classes, and programs. Therefore, although the project would, increase the use of existing park
facilities, it would not result in substantial physical deterioration and this impact would be less than
significant.
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b) Does the project include recreational facilities or require the construction or
expansion of recreational facilities which might have an adverse physical effect
on the environment?
Less than Significant. The project would replace and improve existing aquatic center facilities; therefore,
it would not increase the population in the area but would allow for an increase in recreational users.
Although the project would expand an existing recreational facility, it would not have a significant,
adverse physical effect on the environment. As discussed in Sections 3.IV, Biological Resources, 3.V,
Cultural Resources, 3.VII, Geology and Soils, and 3.XVII, Tribal Cultural Resources, all potentially
significant impacts would be reduced to a less-than-significant level by mitigation incorporated into the
project. The project would allow the City to expand recreation at the new aquatic facility, but this would
not change the operational impacts of the existing pool, and this impact would be less than significant.
XVI. Transportation
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Conflict with a program plan, ordinance or policy
addressing the circulation system, including transit,
roadway, bicycle and pedestrian facilities?
܆ ܆ ܈ ܆
(b) Would the project conflict or be inconsistent with
CEQA Guidelines section 15064.3, subdivision (b)? ܆ ܆ ܈ ܆
(c) Substantially increase hazards due to a geometric
design feature (e.g., sharp curves or dangerous
intersections) or incompatible uses (e.g., farm
equipment)?
܆ ܆ ܆ ܈
(d) Result in inadequate emergency access? ܆ ܆ ܈ ܆
Environmental Evaluation
REGIONAL AND LOCAL ACCESS
Regional access is provided by Highways 101 and 280, El Camino Real, Westborough
Boulevard/Chestnut Avenue, and Grand Avenue. Local access is provided by W. Orange Avenue and
Tennis Drive.
PUBLIC TRANSIT
The project site is served by San Mateo County Transit District (SamTrans) Bus Route 37, which has a
stop at the corner of W. Orange Avenue and Tennis Drive. The bus route offers connections to Daly City,
San Bruno, Alta Loma School, and Daly City Bay Area Rapid Transit (BART) via Route 130. In addition,
the Free South City Shuttle stops at the corner of W. Orange Avenue and Tennis Drive. The Free South
City Shuttle provides a circular route within the City connecting schools, parks, the Municipal Services
Building, downtown area, Kaiser Hospital, and senior centers, and provide connecting transportation to
SamTrans stops and the SSF BART station (City of South San Francisco 2023j). Caltrain and Bay Area
Rapid Transit (BART) stations are both located approximately 1 mile east of the project.
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PEDESTRIAN/BICYCLE TRANSIT
Centennial Way is a 2.85-mile-long Class 1 bicycle/pedestrian trail that will eventually run from the City
of Colma to the City of Millbrae. The trail crosses W. Orange Avenue approximately 0.25 mile south of
the project, and connects to San Bruno BART Station, Tanforan Shopping Center, South San Francisco
High School, El Camino High School, and South San Francisco BART station (City of South San
Francisco 2023b). The project would include the installation of one indoor and eight outdoor bicycle
racks.
The project would include ADA-approved sidewalks and paved walkways accessing the aquatic complex.
It would also improve the existing crosswalk on Tennis Drive by adding traffic calming measures for
pedestrian safety (see Figure 3).
ADA/EV PARKING
There is an existing parking lot on the north side of Tennis Drive accessible by a crosswalk across Tennis
Drive. The project includes a new parking and drop-off area with six ADA parking stalls, two EV
charging stalls, and five regular parking stalls (see Figure 3).
a) Would the project conflict with a program plan, ordinance or policy addressing the
circulation system, including transit, roadway, bicycle and pedestrian facilities?
Less than Significant. The City’s General Plan Mobility Element includes policies and actions designed
to incorporate complete streets improvements into all roadway and development projects, incorporate
bicycle and pedestrian improvements into capital projects, address ADA accessibility, expand the low-
stress bike and pedestrian network, and expand bicycle parking at major activity centers. The project
would include a new parking lot with ADA and EV parking. It would be adjacent to a SamTrans bus stop,
providing access to public transit. It would be 0.25 mile from the Centennial Way bicycle and pedestrian
path, with access via W. Orange Avenue. The project would include a total of nine bicycle racks.
Project construction would result in vehicle worker trips, haul trips, and vendor trips. The cut and fill
could generate a total of about 875 haul trips over the construction period – 808 haul trips during
construction of the new aquatic center, and 67 trips during the demolition of the existing pool building.
The increase in traffic as a result of worker and haul trips would increase traffic at nearby traffic
intersections and roadway segments. The project would obtain encroachment permits which would
include a Traffic Control Plan. In addition, haul and vendor trips would primarily occur during off-peak
hours (9:00 a.m. to 3:00 p.m.).
The project is on a transit line and would include improvements for bicycle and pedestrian facilities, ADA
parking, and traffic calming measures; therefore, the project would not conflict with a program plan,
ordinance, or policy addressing the circulation system, including transit, roadway, bicycle and pedestrian
facilities, and this impact would be less than significant.
b) Would the project conflict or be inconsistent with CEQA Guidelines section
15064.3, subdivision (b)?
Less than Significant. The new 2019 State CEQA Guidelines require analysis of impacts related to
Vehicle Miles Traveled (VMT) as a result of a project. VMT is the amount and distance of automobile
traffic attributable to a project. The City’s General Plan includes goals to reduce VMT and GHG
emissions. This analysis is based on a Vehicle Miles Traveled (VMT) and Trip Generation Assessment
provided by Kittleson & Associates (July 17, 2023) (Table 5). The analysis is based on trip generation
from the number of lap lanes in the existing pool (six lanes) versus the new pools (17 lanes).
Orange Memorial Park Aquatic Center Project
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Table 5. Trip Generation
Pedestrian Group Counts1
(Existing)
Pedestrian Group Counts1
to Proposed Site
(Projected)
Net New Project Trips
Pool Size 6 Lap Lanes 17 Lap Lanes
Group Counts
Weekday Daily Trips 238 674 436
Saturday Daily Trips 538 1,524 986
Weekday AM Peak Hour Trips 35 100 65
Weekday PM Peak Hour Trips 67 190 123
Saturday Peak Hour Trips 99 281 182
1 Pedestrian Groups are the number of groups of people entering the pool facility.
The assumption for the VMT analysis is that the demand for swimming is likely already present but
residents are using other pools further away, due to limited capacity at the existing pool. An expanded
Orange Pool facility will provide additional classes and opportunities for recreational swimmers closer to
the City to better meet the demand from South San Francisco residents. Vehicle trip generation is
anticipated to increase since both the pool size and number of lap lanes will increase by more than double
with the new pool compared to the old pool. The increase in vehicle trip generation is conservatively
estimated at 65 trips in the weekday AM peak hour, 123 trips in the weekday PM peak hour, and 182 on a
Saturday peak hour. Overall, total daily vehicle trip generation is projected to increase by about 436 on
weekdays and 986 on weekends.
The development of the project will reduce the overall contribution of pool trips to regional VMT because
residents of South San Francisco will be able to use their local pool which has fewer capacity constraints
to meet their swimming needs rather than traveling farther away to pools in other communities like the
Brisbane Community Pool or the Jean E. Brink Swimming Pool in Pacifica. This reduces the overall trip
length for South San Francisco residents, which will reduce regional VMT. Regional VMT with the
project is estimated to decrease because an expanded Orange Pool will provide additional capacity to
better meet the needs of residents of South San Francisco who will be able to drive to a more local pool
rather than one farther away, reducing trip length and VMT. Therefore, the project would not be
inconsistent with CEQA Guidelines regarding VMT, and this impact would be less than significant.
c) Would the project substantially increase hazards due to a geometric design
feature (e.g., sharp curves or dangerous intersections) or incompatible uses
(e.g., farm equipment)?
No Impact. The project does not include any design features that would increase hazards. The project
would replace an existing aquatic center and parking area in a public park. The new parking area would
provide additional spaces for ADA parking close to the pool complex. The project would also traffic
calming measures for the crosswalk that crosses Tennis Drive. Therefore, no impact would occur.
d) Would the project result in inadequate emergency access?
Less than Significant. A significant impact may occur if a project were to interfere with roadway
operations used for emergency access or evacuation or would generate sufficient traffic to create traffic
congestion that would interfere with the emergency access.
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66
During short-term construction activities including the associated roadway improvements, partial or
complete road closures may be required along both Tennis Drive and W. Orange Avenue to accommodate
utility trenching for installation of storm drains, domestic water, and fire water lines. Closures would not
impact individual access to other properties. The City’s General Plan does not identify emergency
evacuation routes. W. Orange Avenue is identified as an arterial boulevard and Tennis Drive is identified
as a collector street (City of South San Francisco 2022a).
During the construction phase, the City would require an encroachment permit for any temporary
activities that would affect the public right-of-way. Encroachment permit conditions would include a
traffic control plan with temporary procedures for emergency access. Additionally, in the event of partial
lane closures, sufficient alternative routes exist near the facility and the project would not interfere or
result in inadequate emergency access. Therefore, the project would not result in inadequate emergency
service, and this impact would be less than significant.
XVII. Tribal Cultural Resources
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
(a) Would the project cause a substantial adverse
change in the significance of a tribal cultural resource,
defined in Public Resources Code section 21074 as
either a site, feature, place, cultural landscape that is
geographically defined in terms of the size and scope
of the landscape, sacred place, or object with cultural
value to a California Native American tribe, and that
is:
(i) Listed or eligible for listing in the California
Register of Historical Resources, or in a local
register of historical resources as defined in
Public Resources Code section 5020.1(k), or
܆܈܆܆
(ii) A resource determined by the lead agency, in its
discretion and supported by substantial
evidence, to be significant pursuant to criteria set
forth in subdivision (c) of Public Resources Code
Section 5024.1. In applying the criteria set forth
in subdivision (c) of Public Resource Code
Section 5024.1, the lead agency shall consider
the significance of the resource to a California
Native American tribe.
܆܈܆܆
Environmental Evaluation
At the time of the initial European contact with the Native Americans of the San Francisco Bay area,
Costanoans (from the Spanish costaños, or “coast people”), members of the Penutian linguistic family,
inhabited the area from the Carquinez Strait and the northern tip of the San Francisco Peninsula to the
region south of Monterey Bay and east to the Diablo Range. These Native Americans called themselves
Ohlone, entered the Bay Area approximately 1,500 years ago. They came from the Delta region and
displaced earlier Hokan speakers. An estimated 7,000 to 10,000 Native Americans lived near San
Francisco Bay by the time of European contact in the 18th century. According to the City’s General Plan
EIR and consistent with the City’s historic as an Ohlone settlement location, there are Native American
village sites and archaeological sites scattered around the City of South San Francisco. Known resources
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
67
occur along the El Camino Real corridor, in the San Bruno Mountains, and adjacent to portions of Colma
Creek.
AB 52 establishes a formal consultation process for California tribes in the CEQA process, requiring the
lead agency to initiate consultation with California Native American groups when a decision to undertake
a project or determination that a project is complete (e.g., prior to the release of a negative declaration,
mitigated negative declaration, or environmental impact report), lead agencies are required to notify tribes
who previously requested placement on the notification list. On June 23, 2023, the City provided formal
notification in writing to eight separate Native American groups. After 30 days, none of the tribes
requested AB52 consultation.
During the preparation of the Cultural Resources Technical Report, a search of the California Native
American Heritage Commission (NAHC) Sacred Lands File (SLF) was requested on April 26, 2023, with
the intent of identifying culturally sensitive areas and obtaining a list of Native American contacts who
may have specific knowledge of the vicinity. The NAHC response was received on May 18, 2023, and
provided a negative result (there were no identified Sacred Lands onsite) and a list of eight Native
American tribes and individuals who may have knowledge of cultural resources in the project area.
SWCA sent outreach letters via email to all Native American contacts on May 30, 2023, with hard copies
followed by regular mail on June 2, 2023. Follow-up telephone calls were made by SWCA on June 2 and
June 8, 2023. Chairperson Irene Zwierlein of the Amah Mutsun Band of Mission San Juan Bautista
requested that all persons be aware that railroads were historically built on Native burial grounds.
Chairperson Ann Marie Sayers of the Indian Canyon Mutsun Band of Costanoan requested the CHRIS
results, final report, and the evolution and development of the project area, which was provided by
SWCA in an email to Chairperson Sayers. Kanyon Sayers Roods responded via email that the project area
overlaps or is near the management boundary of a potentially eligible cultural site and that she would like
to consult on the project. Thereafter, Kanyon Sayers Roods was reached by phone by the City on
September 6, 2023. In that conversation a request was made by Kanyon Sayers Roods for worker
awareness training covering tribal cultural resources, and that a Native American monitor from a local
tribe be present following the event of the inadvertent discovery of a prehistoric archaeological resource
to monitor the treatment of that resource. These requests are reflected in Mitigation Measure TCR – 1,
below. The remainder of the telephone calls went unanswered.
It was concluded that the project area intersects a portion of an archaeological site, a historic-era segment
of rail line that once connected the two northern branches of the Southern Pacific Railroad; the rail line
ran from San Francisco to Los Angeles. The segment of the rail line intersecting the project area is
located in the northeast portion of the project area adjacent to Tennis Drive. This segment was recorded
on July 19, 2000 by Mike Avina, who documented the site as a historic-era railroad segment consisting of
fifty feet of Southern Pacific’s railroad system within the city of South San Francisco and recommended
the resource as not eligible for the National Register of Historic Places (NRHP) or the or the California
Register of Historic Resources (CRHR) due to a lack of historic integrity resulting from modern
development. During the current survey for the Orange Memorial Park Aquatic Center project, it was
noted that this segment had been completely removed.
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a) Would the project cause a substantial adverse change in the significance of a
tribal cultural resource, defined in Public Resources Code section 21074 as either
a site, feature, place, cultural landscape that is geographically defined in terms of
the size and scope of the landscape, sacred place, or object with cultural value to
a California Native American tribe, and that is:
a-i) Listed or eligible for listing in the California Register of Historical Resources, or in
a local register of historical resources as defined in Public Resources Code
section 5020.1(k)?
Less than Significant with Mitigation. The proposed project would not cause substantial adverse change
in the significance of a tribal cultural resource that is listed or eligible for listing in the California Register
of Historical Resources (CRHR) or in another local register. According to the NAHC’s Sacred Lands File
while project site vicinity was once was documented as a historic-era railroad segment consisting of fifty
feet of Southern Pacific’s railroad system within the city of South San Francisco, was determined
ineligible for the National Register of Historic Places (NRHP) or the or the CRHR due to a lack of
historic integrity resulting from modern development. This segment was subsequently completely
removed. There are no other Native American tribal heritage sites recorded within the proposed project
site or vicinity.
After notification for formal consultation, the City received one request for consultation from the Indian
Canyon Band Mutsun Band of Costanoan Indians. Given the negative results of the NAHC Sacred Lands
File Search and the Orange Memorial Park Aquatic Center Cultural Resources report (June 2023), and the
existing disturbed environment of the Project site, it was concluded that the proposed Project would have
a less- than-significant impact on tribal cultural resources with implementation of Mitigation Measure
TCR-1, which would be implemented in the event that unanticipated prehistoric cultural resources (or
TCRs) are exposed during project construction.
Mitigation Measure TCR-1:
The following measures shall be implemented prior to project implementation and in the event that
unanticipated prehistoric cultural resources or TCRs are exposed during project construction:
a. All construction staff must receive worker environment awareness training (WEAP) that
identifies the identification and proper treatment of tribal cultural resources. In the event that
unanticipated prehistoric cultural resources are exposed during disturbance activities, work
within 15 meters (50 feet) of the find (Find Site) must stop and the California Native
American Heritage Commission must be contacted to identify a local Native American tribal
member to provide monitoring inspection of any further construction work at the Find Site.
Work may not resume at the Find Site until a tribal member is present to provide monitoring
inspection.
a-ii) A resource determined by the lead agency, in its discretion and supported by
substantial evidence, to be significant pursuant to criteria set forth in subdivision
(c) of Public Resources Code Section 5024.1. In applying the criteria set forth in
subdivision (c) of Public Resource Code Section 5024.1, the lead agency shall
consider the significance of the resource to a California Native American tribe.
Less than Significant with Mitigation. The City of South San Francisco has considered the significance
of potential tribal cultural resources on the project site and vicinity to Native American Tribes. Based on
the reasons that results of the NAHC Sacred Lands Files Search were negative and with implementation
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
69
of Mitigation Measure TCR-1, as summarized above, impacts on tribal resources would be less than
significant with mitigation.
XVIII. Utilities and Service Systems
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
Would the project:
(a) Require or result in the relocation or construction of
new or expanded water, wastewater treatment or
storm water drainage, electric power, natural gas, or
telecommunications facilities, the construction or
relocation of which could cause significant
environmental effects?
܆܆܈܆
(b) Have sufficient water supplies available to serve the
project and reasonably foreseeable future
development during normal, dry and multiple dry
years?
܆܆܈܆
(c) Result in a determination by the wastewater treatment
provider which serves or may serve the project that it
has adequate capacity to serve the project’s projected
demand in addition to the provider’s existing
commitments?
܆܆܈܆
(d) Generate solid waste in excess of State or local
standards, or in excess of the capacity of local
infrastructure, or otherwise impair the attainment of
solid waste reduction goals?
܆܆܈܆
(e) Comply with federal, state, and local management
and reduction statutes and regulations related to solid
waste?
܆܆܈܆
Environmental Evaluation
a) Would the project require or result in the relocation or construction of new or
expanded water, wastewater treatment or storm water drainage, electric power,
natural gas, or telecommunications facilities, the construction or relocation of
which could cause significant environmental effects?
WATER
Less than Significant. Water for project construction and operation is supplied by the California Water
Service, South San Francisco Division (CalWater), and the majority of their supply (80 percent) is
purchased from San Francisco Regional Water System (SF RWS). The remaining water is drawn from
local groundwater wells. CalWater serves 63,702 people in an 11.2-square-mile area, which has an
average demand of 5.88 million gallons per day (mgd) (BAWSCA 2023). CalWater has an Individual
Supply Guarantee of 35.68 mgd, or approximately 39,993 acre-feet per year, which is shared among its
Bear Gulch, Mid-Peninsula, and South San Francisco Districts, from the San Francisco Public Utilities
Commission (SFPUC). In addition to the water from the SFPUC, CalWater obtains a maximum of
approximately 1.37 mgd or 1,534 acre-feet per year, from local sources in the Westside Groundwater
Basin during a non-drought year. The Westside Groundwater Basin is categorized by the DWR as a very
low priority basin and is actively managed to prevent significant overdraft (CalWater 2021). Between
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70
2016 and 2020, CalWater supplied an average of 6,837 acre-feet per year of potable water (CalWater
2021).
Construction activities would require a minimal amount of water for dust control and cement mixing.
Water would be delivered to the project site by water truck. Since the project would replace one existing
pool with two new pools, water use at the aquatic center would approximately double and the total
volume of both pools would be approximately 450,425 gallons or 1.38 acre-feet, less than 0.02 percent of
an average year water demand. Project operation would use water for backwashing the pool filters. The
filters are backwashed approximately once every 2 weeks and use approximately 9,290 gallons of water
with each event. Tanks are backwashed one at a time. Each tank would use approximately 241,540
gallons or 0.74 AF in a year, which is approximately 0.01 percent Therefore, the project would not result
in the relocation or construction of new or expanded water treatment facilities, and this impact would be
less than significant.
WASTEWATER
Less than Significant. Wastewater treatment is provided by South San Francisco/San Bruno Water
Quality Control Plant (SSWQCP), which is located along Colma Creek near San Francisco Bay. It
receives an average dry weather flow of approximately 9 mgd and has capacity to treat up to 13 mgd in
average dry weather flow. Peak wet weather flows can exceed 60 mgd (City of South San Francisco
2023k). The plant last experienced flows that exceeded maximum peak wet weather capacity on
December 31, 2022 (City of South San Francisco 2023l).
Construction of the project would produce minimal wastewater from construction crew use of portable
toilets. The project would add new restroom and shower facilities as well as two pools in the new aquatic
center, and demolish pool, restroom, and shower facilities associated with the existing pool building.
Since the new aquatic center includes two pools and additional restroom and shower facilities, it is likely
to serve more residents and therefore create more wastewater from restroom and shower use. Filters
would be backwashed approximately once every 2 weeks, creating approximately 9,290 gallons of
wastewater each time, which is approximately 0.1 percent of the dry weather flow capacity. Therefore,
the additional volume of wastewater produced from the pool facility would be minimal.
Operation of the project would produce a minimal permanent change in wastewater production, and the
project would not result in the relocation or construction of new wastewater treatment facilities, therefore
this impact would be less than significant.
STORMWATER
Less than Significant. The project would include a total of approximately 17,215 square feet of new
impervious surface area, which would drain to new LID stormwater treatment and retention facilities on-
site. Overflow would drain to the existing storm drain in W. Orange Avenue and eventually to Colma
Creek. The project would include drainage improvements that meet the requirements of the SMCWPPP to
prevent sediment-laden runoff to Colma Creek. Therefore, project operation would not create a need for
new stormwater facilities, and this impact would be less than significant.
The Applicant would be required to implement a SWPPP under the Municipal Regional Stormwater
NPDES Permit6 and the SMCWPPP during project construction (San Francisco Bay RWQCB 2022). The
SWPPP must include site-specific BMPs that are designed to prevent runoff from construction areas to
6 San Francisco Regional Water Quality Control Board (RWQCB). 2015. Municipal Regional Stormwater NPDES Permit. Order
No. R2-2015-0049. NPDES Permit No. CAS612008. Available at: https://www.cleanwaterprogram.org/images/uploads/R2-
2015-0049.pdf. Accessed October 21, 2021.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
71
reduce potential impacts to surface water quality during project construction. The plan would also include
design elements and BMPs for construction areas, such as fueling and equipment washing areas, and trash
and hazardous material storage areas. Therefore, impacts related to stormwater runoff during construction
would be less than significant.
GAS AND ELECTRICITY
Less than Significant. Electric power services are provided by Peninsula Clean Energy (PCE) and
Pacific Gas and Electric (PG&E). The City automatically enrolled all residents and businesses in PCE in
2016 in an effort to reduce GHG emissions and combat global warming, and offers the option to remain
using PG&E as an energy provider. PCE purchases electricity directly from renewable energy sources,
and PG&E delivers the electricity to homes and businesses using its existing transmission and distribution
lines (City of South San Francisco 2023f). PG&E additionally provides the City’s natural gas.
The project would have new electrical demands associated with the new and enlarged aquatic center.
The project would be all-electric and would include rooftop solar panels to help supply electricity.
The project would result in either a small increase or a net decrease in existing electricity use because of
the solar panels; therefore, this impact would be less than significant.
The project would be all electric and would remove existing gas infrastructure; therefore, no impact
related to natural gas use would occur.
TELECOMMUNICATIONS
Less than Significant. The project would replace the existing aquatic center and extend new
telecommunications infrastructure to the facility; however, it would not appreciably change existing
telecommunications use. Therefore, no impact related to telecommunications infrastructure would occur.
The existing park facilities are served by all public utilities. The new aquatic center would replace the
existing pool and would tie into the same water, sewer, and storm drain lines through new laterals.
The project would be all electric and would not include the use of natural gas. The project would also
include solar panels to supply electricity. The project would tie into existing electrical and
telecommunications facilities. The project would not require the construction or relocation of new or
expanded water, wastewater, storm drain, electric power, or telecommunications facilities. This impact
would be less than significant.
b) Would the project have sufficient water supplies available to serve the project and
reasonably foreseeable future development during normal, dry and multiple dry
years?
Less than Significant. The aquatic center is served by CalWater, South San Francisco District.
As discussed above, 80 percent of CalWater’s supply for their South San Francisco District is purchased
from the San Francisco Regional Water System and originates in the Hetch Hetchy Reservoir, and the
remaining 20 percent is drawn from local groundwater wells. In 2019, the SWRCB adopted amendments
to the Bay Delta Water Quality Control Plan that increased flows in the Tuolumne River in order to
protect Bay-Delta water quality (SWRCB 2019). As a result, the SFPUC, which oversees the San
Francisco Regional Water System, needs to find additional water to meet projected demand, particularly
in drought years. The SFPUC is currently working on a Voluntary Settlement Agreement with the state,
as well as pursuing an Alternative Supply Program with a number of alternative sources of supply, both
within San Francisco and in partnership with other agencies, that could provide additional water to meet
current and future obligations. In the meantime, supply and demand projections are based on the currently
adopted amendment (SFPUC 2023).
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As required by the DWR, CalWater has analyzed the long-term reliability and vulnerability of its water
supplies and developed a combination of supply alternatives and conservation planning efforts to meet the
water supply needs of its customers in the South San Francisco District. CalWater has developed water
supply estimates for normal year, single dry year, and multiple dry year scenarios based on the existing
Bay Delta Water Quality Control Plan. Table 6 shows the projected water balance for a normal dry year
through 2045. Table 7 shows the water balance for the first 5 years of a multiple dry year sequence under
the 2020 Urban Water Management Plan (CalWater 2021). As shown in Table 6, CalWater has adequate
water supplies to meet a normal year demand.
Table 6. Water Supply and Demand Estimates for Normal Water Years In Acre Feet (DWR Table 7-
2)
Drought Year Supply/Demand Totals* 2025 2030 2035 2040 2045
First Year Supply Totals 7,543 7,483 7,635 8,000 8,423
Demand Totals2 7,543 7,483 7,635 8,000 8,423
Difference 0 0 0 0 0
* All numbers are in million gallons per year.
Source: CalWater (2021), Table 7-3. Normal Year Supply and Demand Comparison (DWR Table 7-2).
As shown in Table 7, CalWater’s multiple dry year supplies are not adequate to meet projected multiple
dry year demands. Significant supply shortfalls, ranging from 29 to 38 percent in the first year of the 5-
year dry period to 36 to 45 percent in the fifth year of the 5-year dry period, are projected. The water
supply projections presented above likely represent a worst-case scenario in which the Bay-Delta Plan
Amendment is implemented without the SFPUC and the SWRCB reaching a Voluntary Agreement and
does not account for implementation of SFPUC’s Alternative Water Supply Program.
Table 7. CalWater Water Supply and Demand Estimates for Multiple Dry Years (DWR Table 7-4)
Drought Year Supply/Demand Totals* 2025 2030 2035 2040 2045
First Year Supply Totals 5,678 5,636 5,739 5,917 5,534
Demand Totals 8,009 7,943 8,104 8,429 8,940
Difference -2,331 -2,307 -2,365 -2,574 -3,406
Second Year Supply Totals 5,095 5,059 5,082 5,291 5,534
Demand Totals 8,009 7,943 8,104 8,429 8,940
Difference -2,914 -2,884 -3,022 -3,138 -3,406
Third Year Supply Totals 5,095 5,059 5,082 5,291 5,534
Demand Totals 8,009 7,943 8,104 8,429 8,940
Difference -2,914 -2,884 -3,022 -3,138 -3,406
Fourth Year Supply Totals 5,095 5,059 5,082 4,874 4,941
Demand Totals 8,009 7,943 8,104 8,429 8,940
Difference -2,914 -2,884 -3,022 -3,555 -3,999
Fifth Year Supply Totals 5,095 5,059 5,082 4,874 4,941
Demand Totals 8,009 7,943 8,104 8,429 8,940
Difference -2,914 -2,884 -3,022 -3,555 -3,999
* All numbers are in acre-feet per year.
Source: CalWater (2021), Table 7-5. Multiple Dry Year Supply and Demand Comparison (DWR Table 7-4).
Orange Memorial Park Aquatic Center Project
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73
The new pool complex with two pools will approximately double the existing water use. The outdoor
pool would have a capacity of approximately 277,161 gallons and the indoor pool capacity would be
approximately 173,264 gallons (see Design Plans, pp. 161 and 167, Appendix A). The total capacity
would be 450,425 gallons or 1.38 acre-feet. This is less than 0.02 percent of total water demand in an
average year. Project operation would use water for backwashing the pool filters. The filters are
backwashed approximately once every 2 weeks and use approximately 9,290 gallons of water with each
event. Tanks are backwashed one at a time. Each tank would use approximately 241,540 gallons or 0.74
AF in a year, which is less than 0.001 percent of the average demand and supply of a normal water year
(Table 6). Therefore, the new pool complex would represent a minor increase in water demand and this
impact would be less than significant.
c) Would the project result in a determination by the wastewater treatment provider
which serves or may serve the project that it has adequate capacity to serve the
project’s projected demand in addition to the provider’s existing commitments?
Less than Significant. As discussed under Section 3.XVIII(a), SSWQCP receives average dry weather
flow of approximately 9 mgd and has a wastewater treatment plant capacity of up to 13 mgd in average
dry weather flow (City of South San Francisco 2023l). The project would result in an increase in existing
pool, restroom, and shower uses at the Orange Pool Aquatic Center that would result in a relatively minor
increase in wastewater production. However, the project would not result in an increase in residences or
employment that would bring more people to the area, and wastewater production increases related to
pool use would be small; therefore, impacts related to increased wastewater production would be less than
significant.
d) Would the project generate solid waste in excess of State or local standards, or in
excess of the capacity of local infrastructure, or otherwise impair the attainment
of solid waste reduction goals?
Less than Significant. Solid waste pickup is provided to the project area and City by South San
Francisco Scavenger Company, which provides pickup of residential and commercial garbage, recyclable
material, organic waste, and food waste, and diverts construction and demolition debris, wood waste,
plastics, commercial food waste and other materials for recycling (South San Francisco Scavenger
Company 2023a). Scavenger also operates a state-of-the-art transfer station and materials recovery
facility (South San Francisco Scavenger Company 2023b) as well as an anaerobic digestor facility that
processes organic waste to compressed renewable natural gas for use in the company’s collection trucks
(South San Francisco Scavenger Company 2018).
Solid waste is transported to the Corinda Los Trancos Ox Mountain Sanitary Landfill for recycling,
composting, and disposal (Everything South City 2021). The landfill is permitted to receive 3,598 tons of
waste per day and has an anticipated closure date of 2034 (CalRecycle 2017).7 In the second quarter of
2019, the landfill received an average of 160,253 tons of solid waste (approximately 1,780 tons per day,
or 49 percent of its permitted throughput).
The project would be required to adhere to the City’s Municipal Code Section 15.60.030, Diversion
Requirements, which requires contractors to divert construction and demolition debris in a manner that
complies with the California Green Building Standards Code. In particular, the project must submit and
follow a Waste Management Plan that includes the following:
7 Asphalt or concrete construction debris is approximately 2,400 pounds per cubic yard. Dry earth construction debris is
approximately 2,100 pounds per cubic yard. Reference: California Department of Resources Recycling and Recovery
(CalRecycle). 2018. Solid Waste Cleanup Program Weights and Volumes for Project Estimates. Available at:
https://www.calrecycle.ca.gov/swfacilities/cdi/tools/calculations. Accessed October 21, 2021.
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x Deconstruct and salvage all or part of the structure, as practicable;
x Direct 100 percent of inert solids to reuse and recycling facilities; and
x Either:
o Take all mixed construction and demolition debris to mixed construction and demolition
debris recycling facilities approved by the City and take all sorted or crushed construction
and demolition debris to approved facilities, or
o Source separate noninert materials such as cardboard and paper, wood, metals, green waste,
new gypsum wallboard, tile, porcelain fixtures, and other easily recycled materials, and direct
them to recycling facilities approved by the City and take the remainder to a facility for
disposal. In this option, calculations must be provided to show that the minimum amount of
debris as specified by Section 4.408 of Chapter 4 of CALGreen has been diverted. (Ord. 1532
§ 1, 2017)
The landfill has a remaining capacity of approximately 45 million cubic yards and is expected to operate
until 2034 (CalRecycle 2023). The project would divert construction and demolition debris as required,
and the landfill would have adequate capacity to receive the remainder during the construction phase of
the project because the construction phase of the project would be temporary and would generate a
limited amount of solid waste. Development of the required Waste Management Plan would ensure this
impact is less than significant.
Operation of the project would not change appreciably from operation of the existing aquatic center;
therefore, the project would not generate waste in excess of state or local standards or in excess of the
capacity of local infrastructure, or otherwise impair the attainment of solid waste reduction goals.
Therefore, this impact would be less than significant.
e) Would the project comply with federal, state, and local management and reduction
statutes and regulations related to solid waste?
Less than Significant. The project would adhere to all federal, state, and local management and reduction
statutes and regulations related to solid waste. The Applicant would require the contractor to adhere to the
City’s Waste Management Plan for disposal of construction debris, including recycling at least 75 percent
of clean asphalt and concrete. During operation, the new aquatic center would install recycling and
composting waste containers to promote waste diversion from landfills, and water bottle refill stations to
promote reusable water bottles. Therefore, the project would meet all City requirements for recycling
during operation, and this impact would be less than significant.
XIX. Wildfire
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
If located in or near state responsibility areas or lands classified as very high fire hazard severity zones, would the proje ct:
(a) Substantially impair an adopted emergency response
plan or emergency evacuation plan? ܆܆܆܈
(b) Due to slope, prevailing winds, and other factors,
exacerbate wildfire risks, and thereby expose project
occupants to, pollutant concentrations from a wildfire
or the uncontrolled spread of a wildfire?
܆܆܆܈
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Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
(c) Require the installation or maintenance of associated
infrastructure (such as roads, fuel breaks, emergency
water sources, power lines or other utilities) that may
exacerbate fire risk or that may result in temporary or
ongoing impacts to the environment?
܆܆܆܈
(d) Expose people or structures to significant risks,
including downslope or downstream flooding or
landslides, as a result of runoff, post-fire slope
instability, or drainage changes?
܆܆܆܈
Environmental Evaluation
a) If located in or near state responsibility areas or lands classified as very high fire
hazard severity zones, would the project substantially impair an adopted
emergency response plan or emergency evacuation plan?
No Impact. A significant impact may occur if a project is located in proximity to wildland areas and
would pose a potential fire hazard, or affect an adopted emergency response plan or emergency
evacuation plan in the event of a fire. CalFire maps Fire Hazard Severity Zones (FHSZs) in State
Responsibility Areas (SRAs), as well as Very High FHSZs in Local Responsibility Areas (LRAs). The
project site is in an LRA and is under the jurisdiction of the South San Francisco Fire Department. There
are no Very High FHSZs mapped in South San Francisco (CalFire 2008). San Bruno Mountain, 0.8 mile
north of the project site, is in a Moderate FHSZ in an SRA (CalFire 2022). The project would replace an
existing public pool and aquatic center with a new pool complex. It would not draw additional people to
an area subject to wildland fires. Therefore, no impact would occur and the project would not result in any
impact an emergency response or evacuation plan.
Project construction would include street and/or lane closures on W. Orange Avenue and Tennis Drive.
However, the project would obtain an encroachment permit for road or lane closures and would abide by
all City policies including development of a Traffic Control Plan. Therefore, the project would not
interfere with an adopted emergency response or evacuation response plan and no impact would occur.
b) Due to slope, prevailing winds, and other factors, if located in or near state
responsibility areas or lands classified as very high fire hazard severity zones,
would the project exacerbate wildfire risks, and thereby expose project occupants
to, pollutant concentrations from a wildfire or the uncontrolled spread of a
wildfire?
No Impact. The project is not located in or near SRAs or lands classified as Very High FHSZs. The
project would replace an existing aquatic center in a public park and would not include elements that
would exacerbate wildfire risks. No impact would occur.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
76
c) If located in or near state responsibility areas or lands classified as very high fire
hazard severity zones, would the project require the installation or maintenance of
associated infrastructure (such as roads, fuel breaks, emergency water sources,
power lines or other utilities) that may exacerbate fire risk or that may result in
temporary or ongoing impacts to the environment?
No Impact. The project is not located in or near SRAs or lands classified as Very High FHSZs. The
project would replace an existing aquatic center in a public park and would not extend facilities that
would exacerbate wildfire risks. No impact would occur.
d) If located in or near state responsibility areas or lands classified as very high fire
hazard severity zones, would the project expose people or structures to
significant risks, including downslope or downstream flooding or landslides, as a
result of runoff, post-fire slope instability, or drainage changes?
No Impact. The project is not located in or near SRAs or lands classified as Very High FHSZs. The
project would replace an existing aquatic center in a public park and would not expose people or
structures to significant post-fire risks. No impact would occur.
XX. Mandatory Findings of Significance
Environmental Issues Potentially
Significant
Impact
Less Than
Significant
with
Mitigation
Incorporated
Less Than
Significant
Impact
No Impact
(a) Does the project have the potential to substantially
degrade the quality of the environment, substantially
reduce the habitat of a fish or wildlife species, cause a
fish or wildlife population to drop below self-sustaining
levels, threaten to eliminate a plant or animal
community, substantially reduce the number or
restrict the range of a rare or endangered plant or
animal or eliminate important examples of the major
periods of California history or prehistory?
܆܈܆܆
(b) Does the project have impacts that are individually
limited, but cumulatively considerable? (“Cumulatively
considerable” means that the incremental effects of a
project are considerable when viewed in connection
with the effects of past projects, the effects of other
current projects, and the effects of probable future
projects)?
܆܈܆܆
(c) Does the project have environmental effects which
will cause substantial adverse effects on human
beings, either directly or indirectly?
܆܈܆܆
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
77
Environmental Evaluation
a) Does the project have the potential to substantially degrade the quality of the
environment, substantially reduce the habitat of a fish or wildlife species, cause a
fish or wildlife population to drop below self-sustaining levels, threaten to
eliminate a plant or animal community, substantially reduce the number or restrict
the range of a rare or endangered plant or animal or eliminate important examples
of the major periods of California history or prehistory?
Less than Significant with Mitigation. The project would replace an existing aquatic center and parking
lot and reconfigure existing soccer fields within Orange Memorial Park. The City of South San Francisco
is located within the South Bay of San Mateo County and is highly urbanized. Accordingly, the potential
for candidate, sensitive, or special status species or habitats is low within the City limits. As described in
Section IV, Biological Resources, Section V, Cultural Resources, and the preceding analyses, no
significant unmitigable impacts to the environment would result. The implementation of MM BIO-1,
MM-BIO-2, MM CUL-1, MM-CUL-2, MM-GEO-1, MM-NO-1, MM-HAZ-1, MM-HAZ-2 and MM
TCR-1 would minimize impacts to nesting birds, and undiscovered cultural, archeological and
paleontological resources, geology and soils impacts related to ground failure , construction noise,
hazards and hazardous materials related to soil contaminants (arsenic) and building materials (lead
paint), and tribal cultural resources to less-than-significant levels. The project does not include significant
fish or wildlife habitat or known cultural resources. Based on these findings, the City of South San
Francisco hereby finds that impacts related to degradation of the environment, biological resources, and
cultural resources would be less than significant with the incorporation of mitigation measures.
b) Does the project have impacts that are individually limited, but cumulatively
considerable? (“Cumulatively considerable” means that the incremental effects of
a project are considerable when viewed in connection with the effects of past
projects, the effects of other current projects, and the effects of probable future
projects)?
Less than Significant with Mitigation. Cumulative environmental impacts are multiple individual
impacts that, when considered together would be considerable, or compound other environmental
impacts. Individual impacts would potentially result from a single project or multiple separate projects
that would potentially occur at the same place and point in time or at different locations and over
extended periods of time. The proposed project would not result in individually limited or contribute to
cumulatively considerable significant impacts. As discussed in Sections I through XX, all short-term
environmental issues would result in either no impacts, less than significant impacts, or less than
significant impacts with the incorporation of mitigation with the implementation of the project.
Construction of the proposed project could result in some short-term temporary impacts such air quality
impacts from dust and engine exhaust, , impacts to nesting birds and, previously undiscovered cultural
and paleontological resources, impacts related to seismic-related ground failure, construction noise,
hazards related to soil contaminants (arsenic) and building materials (lead paint) and tribal cultural
resources, but those would be temporary and/or less than significant with the implementation of
mitigation measures. In summary, the Project’s contribution to potential cumulative impacts related to
these other issues would be less than cumulatively considerable.
c) Does the project have environmental effects which will cause substantial adverse
effects on human beings, either directly or indirectly?
Less than Significant with Mitigation. Based on the nature and scope of the project and the analysis of
the project’s impacts, as summarized in Sections I through XX, no environmental effects have been
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
78
identified in this IS/MND that would cause substantial adverse effects, either directly or indirectly, on
human beings. There would be a variety of other potential effects during construction including:
x Impacts to nesting birds and federally protected waters associated with construction activities and
minor tree removal (discussed in Section IV, Biological Resources)
x Adverse impacts to prehistoric cultural resources and potential unknown human remains
(discussed in Section V, Cultural Resources);
x Earthwork and construction-related impacts due to the potential for liquefaction (discussed in
Section VII, Geology and Soils
x Construction noise-related impacts (discussed in Section XIII, Noise)
x Impacts related to disposal of hazardous materials (discussed in Section IX, Hazards and
Hazardous Materials); and
x Adverse impacts from construction activities to Tribal Cultural Resources (discussed in Section
XVII, Tribal Cultural Resources).
In addition, the project could result in exposure of nearby single-family and multi-family residences to
increases in ambient noise levels and nuisances associated with temporary construction-related noise
(discussed in Section XIII, Noise), which would be considered less than significant with implementation
of and compliance with local noise ordinances.
Most of these impacts would be temporary and intermittent, and all of these impacts would be less than
significant based on compliance with applicable federal, state, and local regulatory requirements and
established impact thresholds, as well as the implementation of mitigation measures. And while the
proposed project could involve the handling of hazardous materials in a manner that poses, unusual risks,
and any hazardous impacts associated with exposure of construction workers to potential harmful
contaminants demolition debris, impacts would be mitigated through the implementation of mitigation
measures. The proposed would not result in long-term air quality or traffic hazards. Based on the analysis
in this IS/MND, the City of South San Francisco finds that direct and indirect impacts to human beings
would be less than significant with mitigation incorporated.
Orange Memorial Park Aquatic Center Project
Initial Study/Mitigated Negative Declaration
79
4 REFERENCES
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Bay Area Air Quality Management District. 2017. Final 2017 Clean Air Plan. Spare the Air-Cool the
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———. 2022. California Environmental Quality Act Air Quality Guidelines. Chapter 3. CEQA
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California Geological Survey. 2021. Earthquake Zones of Required Investigation. Available at:
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California Water Service (CalWater). 2021. 2020 Urban Water Management Plan. South San Francisco
District. Available at:
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2023.
City/County Associations of Governments (C/CAG) of San Mateo County. 2012. Comprehensive Land
Use Compatibility Plan for the Environs of San Francisco international Airport. Available at:
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20121.pdf. Accessed June 8, 2023.
City of South San Francisco. 2010. City of South San Francisco Municipal Code Section 20.300.010,
Performance Standards. Available at: http://ci-ssf-
ca.granicus.com/MetaViewer.php?view_id=2&clip_id=309&meta_id=23192. Accessed July 20,
2023.
———. 2022a. City of South San Francisco 2040 General Plan. Shape SSF. Available at:
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content/uploads/2022/11/SSFGPU_PDFPlan_FinalPlan_Resolution_11082022.pdf. Accessed
June 8, 2023.
———. 2022b. City of South San Francisco Climate Action Plan. Available at: https://shapessf.com/wp-
content/uploads/2022/03/SSFCAP_PublicDraft2022_02_Small.pdf. Accessed June 8, 2023.
———. 2023a. Orange Memorial Park Master Plan. Available at:
https://www.ssf.net/home/showpublisheddocument/29241/638137808336400000. Accessed
June 7, 2023.
———. 2023b. SSF Zoning Search App. Available at: https://zoning.ssf.net/. Accessed June 5, 2023.
———. 2023c. SSF New Aquatic Center at Orange Memorial Park. FAQS. Available at:
https://www.ssf.net/departments/parks-recreation/recreation-division/aquatics/new-aquatic-
center-at-orange-memorial-park. Accessed June 7, 2023.
City of South San Francisco Parks and Recreation. 2023a. Child Care. Available at:
https://www.ssf.net/departments/parks-recreation/recreation-division/child-care. Accessed
August 17, 2023.
City of South San Francisco Parks and Recreation. 2023b. Summer Camp 2023. Available at:
https://www.ssf.net/home/showpublisheddocument/29129/638125653359470000. Accessed
August 17, 2023.
———. 2023d. Community Choice Energy. Available at: https://www.ssf.net/departments/city-
manager/sustainability/community-choice-energy. Accessed July 20, 2023.
———. 2023e. Municipal Code. Chapter 13.30 Tree Preservation. Available at:
https://library.qcode.us/lib/south_san_francisco_ca/pub/municipal_code/item/title_13-
chapter_13_30. Accessed June 5, 2023.
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Initial Study/Mitigated Negative Declaration
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———. 2023f. Municipal Code. Title 20. Zoning. Available at:
https://library.qcode.us/lib/south_san_francisco_ca/pub/municipal_code/item/title_20-division_i-
chapter_20_020-20_020_001. Accessed June 5, 2023.
———. 2023g. Municipal Code. Chapter 8.32. Noise Regulations. Available at:
https://library.qcode.us/lib/south_san_francisco_ca/pub/municipal_code/item/title_8-
chapter_8_32. Accessed July 20, 2023.
———. 2023h. Fire Stations. Available at: https://www.ssf.net/departments/fire/fire-stations. Accessed
June 13, 2023.
———. 2023i. Police Stations. Available at: https://www.ssf.net/departments/police. Accessed June 13,
2023.
———. 2023j. Free South City Shuttle. Available at: https://www.ssf.net/services/free-south-city-
shuttle/shuttle-map. Accessed August 17, 2023.
———. 2023k. Water Quality Control Plant. Treatment Process. Available at:
https://www.ssf.net/departments/public-works/water-quality-control-plant/treatment-process.
Accessed June 14, 2023.
———. 2023l. Water Quality Control Plant. Public Notification. Available at:
https://www.ssf.net/departments/public-works/water-quality-control-plant/public-notification.
Accessed June 14, 2023.
City of South San Francisco, Engineering Department. 2019. City of South San Francisco Orange
Memorial Park Water Capture Project. Public Review Initial Study and Mitigated Negative
Declaration. Prepared by Wood Environmental & Infrastructure Solutions.
City of South San Francisco, Parks Division. 2023a. Sign Hill webpage. Available at:
https://www.ssf.net/departments/parks-recreation/parks-division/sign-hill. Accessed June 8,
2023.
———. 2023b. Tree Preservation Ordinance webpage. Available at:
https://www.ssf.net/departments/parks-recreation/parks-division/trees. Accessed June 9, 2023.
County of San Mateo. 2023. San Mateo Countywide Water Pollution Prevention Program. Construction
Best Practices Webpage. Available at: https://www.flowstobay.org/construction. Accessed June
12, 2023.
Department of Conservation. 2018. California Important Farmland Finder. San Mateo County. Available
at: https://maps.conservation.ca.gov/dlrp/ciff/. Accessed June 5, 2023.
Department of Water Resources (DWR). 2006. Bulletin 118 – Westside Groundwater Basin. Available at:
https://water.ca.gov/-/media/DWR-Website/Web-Pages/Programs/Groundwater-
Management/Bulletin-118/Files/2003-Basin-Descriptions/2_035_Westside.pdf. Accessed
June 8, 2023.
Everything South City. 2021. Must Read Tips from our South City San Francisco Scavenger Company.
Available at: https://everythingsouthcity.com/2021/06/must-read-tips-from-our-south-san-
francisco-scavenger-company/. Accessed June 29, 2023.
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Federal Emergency Management Agency (FEMA). 2023. National Flood Hazard Layer. Map
06081C0043F. Available at: https://hazards-
fema.maps.arcgis.com/apps/webappviewer/index.html?id=8b0adb51996444d4879338b5529aa9c
d>. Accessed June 12, 2023.
FlowstoBay.org. 2023. Stormwater Quality Control Requirements, Information for Developers, Builders
and Project Applicants. Available at: https://www.flowstobay.org/wp-
content/uploads/2023/04/SMCWPPP-MRP-3.0-C.3-Flyer_final.pdf. Accessed June 12, 2023.
Rizzoli, Linda. Senior Project Manager. Swinerton Management & Consulting. July 7, 2023. Email
communication to Julie Barlow, Principal Planning Team Lead, SWCA Environmental
Consultants.
San Francisco Bay Regional Water Quality Control Board (San Francisco Bay RWQCB). 2022.
Municipal Regional Stormwater NPDES Permit. California Regional Water Quality Control
Board, San Francisco Bay Region. Order No. R2-2022-0018. NPDES Permit No. CAS612008.
May 11. Available at:
https://www.waterboards.ca.gov/sanfranciscobay/board_decisions/adopted_orders/2022/R2-
2022-0018.pdf> Accessed June 12, 2023.
San Francisco Public Utilities Commission. 2023. Alternative Water Supplies. Available at:
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June 29, 2023.
San Francisco Regional Water Quality Control Board. 2023. San Francisco Bay Basin Water Quality
Control Plan. California Regional Water Quality Control Board, San Francisco Bay Region.
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San Mateo County. 2023. Open San Mateo County. Williamson Act Parcels. Available at:
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South San Francisco Scavenger Company. 2018. Facilitating Food Waste Digestion. Available at:
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———. 2023b. History. Available at: https://ssfscavenger.com/about-us/history/. Accessed June 29,
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South San Francisco Unified School District. 2022. Long Range Facilities Master Plan. Available at:
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Substitute Environmental Document (SED) for the Lower San Joaquin River and Southern
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———. 2020. Environmental Screening Levels Webpage. Available at:
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June 7, 2023.
———. 2023a. GeoTracker. Available at: https://geotracker.waterboards.ca.gov/map/. Accessed June 7,
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———. 2023b. GeoTracker. Parcels northwest of Orange Park (T10000002366). Available at:
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June 7, 2023.
Stinson, M.C, M.W. Manson, and J.L. Plappert. 1982. Aggregate Resource Sectors. South San Francisco
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Troung, Kim-Van, Principal, els Architecture+urban design. 2023. Email communication with Linda
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Construction Noise Handbook. Final Report. August 2006.
———. 2018. Transit Noise and Vibration Impact Assessment Manual. Available at:
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———. 2023. The Great San Francisco Earthquake. Available at:
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ORANGE MEMORIAL PARK AQUATIC CENTER PROJECT (November 2023)
MITIGATION MONITORING AND REPORTING PROGRAM
This Mitigation Monitoring and Reporting Program (MMRP) has been prepared for the Orange Memorial
Park Aquatic Center Project pursuant to CEQA Guidelines (California Code of Regulations, Title 14),
which state:
Section 15097. Mitigation Monitoring and Reporting
(a)… In order to ensure that the mitigation measures and project revisions identified in the EIR or
negative declaration are implemented, the public agency shall adopt a program for monitoring
or reporting on the revisions which it has required in the project and the measures it has imposed
to mitigate or avoid significant environmental effects. A public agency may delegate reporting
or monitoring responsibilities to another public agency or to a private entity which accepts the
delegation; however, until mitigation measures have been completed the lead agency remains
responsible for ensuring that implementation of the mitigation measures occurs in accordance
with the program.
(c) The public agency may choose whether its program will monitor mitigation, report on
mitigation, or both. “Reporting” generally consists of a written compliance review that is
presented to the decision-making body or authorized staff person. A report may be required at
various stages during project implementation or upon completion of the mitigation measures.
"Monitoring" is generally an ongoing or periodic process of project oversight. There is often no
clear distinction between monitoring and reporting and the program best suited to ensuring
compliance in any given instance will usually involve elements of both. The choice of program
may be guided by the following:
(1) Reporting is suited to projects which have readily measurable or quantitative
mitigation measures or which already involve regular review. For example, a report may
be required upon issuance of final occupancy to a project whose mitigation measures
were confirmed by building inspection.
(2) Monitoring is suited to projects with complex mitigation measures, such as wetlands
restoration or archeological protection, which may exceed the expertise of the local
agency to oversee, are expected to be implemented over a period of time, or require
careful implementation to assure compliance.
(3) Reporting and monitoring are suited to all but the most simple projects. Monitoring
ensures that project compliance is checked on a regular basis during and, if necessary
after, implementation. Reporting ensures that the approving agency is informed of
compliance with mitigation requirements.
The MMRP table below lists the proposed mitigation measures identified in the Orange Memorial Park
Aquatic Center Project Initial Study/Mitigated Negative Declaration (IS/MND). The table also describes
the timing for mitigation measure implementation (e.g.., when the measure shall be implemented) and
the parties—such as the Construction Contractor and/or City of South San Francisco and/or City
Representative—that are responsible for ensuring implementation of all aspects of each measure.
Additionally, the MMRP table below provides comments that highlight measure contents and
responsibilities.
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