HomeMy WebLinkAboutColma Creek Advisory Committee Packet - 6.13.17COLMA CREEK FLOOD CONTROL ZONE CITIZENS ADVISORY COMMITTEE
DATE: Tuesday, June 13, 2017
TIME: 3:00 pm
PLACE: City of South San Francisco
Corporation Yard Conference Room
550 North Canal Street
South San Francisco, CA 94080
AGENDA:
CALL TO ORDER
ORDER OF BUSINESS
I. APPROVE MINUTES OF MARCH 14, 2017 MEETING
II. PUBLIC COMMENT
III. DISTRICT PROJECTS, ETC.: SUMMARIZED IN A HANDOUT AND OPEN
FOR ADDITIONAL DISCUSSION
El Camino Box Culvert and Mission Road Diversion Structure
BART Co-op Project
Colma Creek Improvements between Spruce and San Mateo Avenues
Mitigation Sites Downstream of Utah Avenue
Maintenance of Existing Channel (Channel Maintenance Matrix – Inspection
Summary)
Produce Avenue – Channel Wall Project
Utah Avenue to Bay
Sea Level Rise Preparedness
Multi-jurisdictional Regional Stormwater Capture Project at Orange Memorial
Park (SSF and San Mateo Countywide Water Pollution Prevention Program)
Colma Creek Technical Advisory Committee (TAC)
IV. DISCUSSION ITEMS
Colma Creek Flood Control Zone Financial Summary
Colma Creek CIP Project List
Advisory Committee Members (terms expired March 31, 2017):
1) City of San Bruno (O’Connell) reappointment tentatively scheduled for June
2017
2) City of S. San Francisco (Irli) reappointment/new appointment tentatively
scheduled for June 2017
V. ACTION ITEMS
None
ADJOURNMENT
NEXT MEETING – Tuesday, September 12, 2017
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San Mateo County Flood Control District
Colma Creek Flood Control Zone Citizen’s Advisory Committee
Meeting Minutes
Tuesday, March 14, 2017
CALL TO ORDER
Helen Fisicaro called to order the regular meeting of the Colma Creek Flood Control
Zone Citizen’s Advisory Committee at 3:10 p.m. on Tuesday, March 14, 2017, in the
City of South San Francisco – Corporation Yard Conference Room, 550 North Canal
Street, South San Francisco.
ROLL CALL
Present:
Helen Fisicaro, Chair – Town of Colma
Judith Christensen – City of Daly City
Sue Digre – City of Pacifica
Gail DeFries, Member at Large – City of Daly City
Richard Irli, Member at Large – City of South San Francisco
Kamala Cynthia Silva Wolfe, Member at Large – City of South San Francisco
Absent:
Irene O’Connell – City of San Bruno
Mike Futrell – City of South San Francisco
Ed Bortoli, Member at Large – City of South San Francisco
Staff in Attendance:
Ann Stillman – County of San Mateo/San Mateo County Flood Control District
Jim Porter – County of San Mateo (Director of PW/San Mateo County Flood Control
District)
Michael Barber – County of San Mateo/Supervisor Dave Pine’s Office
Brad Donohue – Town of Colma
John Fuller – City o f Daly City
Robert Hahn – City of South San Francisco
Kari Jung – City of South San Francisco
Eunejune Kim – City of South San Francisco
Dave Pine – San Mateo County Board of Supervisors
Staff Absent:
Mark Chow – County of San Mateo/San Mateo County Flood Control District
Erika Powell – San Mateo County Flood & Resiliency
Rob Lecel – City of South San Francisco
I. APPROVAL OF MINUTES
Motion – Gail DeFries, Second – Richard Irli. Minutes of the December 13, 2016
meeting were approved.
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II. PUBLIC COMMENT
1. No members of the public were present.
III. DISTRICT PROJECTS, ETC.: SUMMARIZED IN A HANDOUT AND
OPEN FOR ADDITIONAL DISCUSSION
1. El Camino Box Culvert and Mission Road Diversion Structure
Ann advised that there are no updates on this section of the channel to report.
2. BART Co-op Project
Ann advised that there are no updates on this section of the channel to report
except that City of South San Francisco (City) is in communication with BART to
finalize the terms of the agreement to allow City staff to enter onto BART
property to perform maintenance activities on behalf of the District. The Town of
Colma has already executed the agreement.
3. Colma Creek Improvements between Spruce and San Mateo Avenues
Ann advised that there are no updates on this section of the channel to report
except that the District will continue to monitor this section of channel regularly
for wall movement or settlement at a segment of the south wall immediately
downstream of the San Mateo Avenue Bridge.
4. Mitigation Sites downstream of Utah Avenue
Ann advised that the District staff and Sheriff Work Program (SWP) participants
continue to perform planting, weeding, and trash pick-ups at the five Mitigation
Sites (2a, 2b, 2c, 3, and 4). The next SWP cleanup date has been scheduled for
March 18, 2017.
The District’s contractor, Ecological Concerns, Inc. (ECI), has continued to
perform monthly maintenance at Site 4 (3/18 is the next event date) and quarterly
maintenance at Sites 2 and 3. This schedule was developed based on the amount
of work anticipated to maintain the sites and increase or sustain plant survival
rate.
A volunteer planting event was scheduled last weekend on March 11, 2017.
Volunteers from two local schools (Alta Loma Middle School and S. San
Francisco High School) as well as biotechnology companies were at the event.
Twenty five (25) volunteers planted approximately 191 plants. District staff is
also working with City staff on National River Cleanup Day and Earth Day
cleanup events. Kamala Wolfe requested that she be notified by the District of
future events on Colma Creek as she will spread the word and may be able to get
additional volunteers.
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The following table summarizes the amount of trash removed from the Mitigation
Sites since 2005 and the trash pick-up dates from 2015 through 2017. An
additional 15.9 CY of trash have been removed from the Mitigation Sites since
the last Advisory Committee meeting.
Year
Amount of
Trash Removed
(Cubic Yard)
Event Dates *
2017 13.14 1/7, 1/21, 2/4, 2/18, 3/4
2016 33.00 1/2, 1/23, 2/13, 2/27, 3/19, 4/16, 4/23, 5/14, 5/22, 6/11,
7/23, 8/20, 9/17, 9/24, 10/22, 11/5, 12/3, 12/17 (18 times)
2015 38.98 1/10, 1/24, 2/7, 2/21, 3/7, 3/21, 4/4, 4/18, 5/2, 5/16, 6/20,
7/18, 8/15, 9/13, 9/19, 10/17, 11/14, 12/12 (18 times)
2005 -
2014 503.10 12-19 times per year.
Total 588.22
* Number of event dates increased per mitigation required for Channel Wall Repair Upstream of Spruce
Avenue.
5. Maintenance of Existing Channel
Ann advised that District staff met with the City of South San Francisco Code
Enforcement, Public Works, and Parks staff on January 19, 2017 to discuss work
required to clear pampas grass and other overgrown vegetation on the access road
upstream of the Oak Avenue Bridge under the recently executed Memorandum of
Agreement (MOA) for shared services. As previously reported, the area was cited
in the August 4, 2016, Notice of Violation (NOV) from the City. City plans to
perform the work once staff is available or utilize contractors when the BART
agreement has been fully executed as this area is within the BART agreement
limits.
Unscheduled inspections were conducted on January 20, 2017, and February 18,
2017, after significant storm events. The inspection of January 20, 2017, was the
result of the District being notified of flooding that occurred in the apartment
complex located at 842 Antoinette Lane in the City. Flows from the 12-Mile
Creek went over its bank at the Antoinette Lane/Centennial Way Trail Bridge,
upstream of the confluence with the Colma Creek Flood Control Channel. The
bridge and the upstream channel of 12-Mile Creek were not designed or
constructed by the District. Below are photos taken during the inspection showing
the location of the bank overtopping and muddy driveways in the apartment
complex:
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Bob Hahn asked a question regarding the Westborough tie-in as part of 12-mile
creek. Ann suspects that the head waters come down Westborough but needs to
check the maps to be certain. Richard Irli confirmed that it is 12-Mile Creek and
then comes back into an open ditch by the apartments.
Helen Fisicaro asked a question whether there was debris or just water as the
causation. In the maintenance binder there are pictures where a tree came down,
but there are no reports of debris causing the overtopping of the bank.
The Management Company of the complex is in contact regarding mitigation.
The quarterly inspection of the Colma Creek Flood Control Channel was
performed on February 14 and 23, 2017 (See Maintenance Matrix Binder).
Representatives from the City accompanied District staff during the inspection.
Issues requiring enforcement by the City or the Town have been forwarded to the
respective entity.
The maintenance binder was passed around to show photos from recent King Tide
events.
As previously discussed, the District submitted the permit applications for the
long-term maintenance permit to the regulatory agencies on December 29, 2015
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and the Initial Study/Mitigated Negative Declaration (IS/MND) to the State
Clearing House on June 10, 2016. On October 18, 2016, the IS/MND was
approved by the County Board of Supervisors. The Notice of Determination was
filed with the State Clearinghouse thereafter to complete the CEQA process. The
California Department of Fish and Wildlife permit has been finalized and the
District is prepared to sign it once permits from the US Army Corps of Engineer
and the State Regional Water Board have been issued. The US Fish & Wildlife
Service (USFWS) has completed its informal consultation for special status
species review and provided the Corps with its letter of concurrence of not likely
to adversely affect the California clapper rail on January 23, 2017. However, the
Corps submitted a request to USFWS on February 15, 2017, for an amendment to
their letter stating state that mitigation credits would be purchased from the San
Francisco Bay Wetland Mitigation Bank instead of establishing tidal wetlands in
the Colma Creek channel downstream of the S. Airport Blvd. The cost for
mitigation credits of 0.05 acre needed for the permit has been estimated to be
$47,500. The District decided to pursue the mitigation credits because of varying
policies of the agencies on tidal wetland creation that would be acceptable, which
could delay the issuance of the permits. It is anticipated that the Corps permit to
the District could be issued by the end of May 2017 (due to recent storm damage).
In summary, the proposal to purchase 0.05 acres of mitigation credits considering
the zero trash by 2020 initiative.
Judith Christiansen asked a question requesting clarification of what it means to
purchase mitigation credits. Ann clarified that purchasing mitigation credits
satisfies the mitigation requirements, although cleaning up the trash downstream
still needs to occur. The San Francisco Bay Wetland Mitigation Bank would use
the funds collected to perform the mitigation.
Ann suspects that as we review the financials of the mitigation costs opposed to
the purchase of credits that it will be beneficial to purchase the credits and move
on especially when accounting for drought years and plant survivability. The fee
would be one-time, not annual.
Produce Avenue – Channel Wall Project
The District continues to monitor the channel walls immediately upstream and
downstream of the Produce Avenue Bridge. Also as previously reported, the
District authorized CDM-Smith to perform geotechnical and geophysical
investigations on the cause of the wall movements, develop repair options, and
prepare a report with recommendations for a Not-to-Exceed amount of $260,320.
Two borings outside of the Caltrans right-of-way, as shown on the map below,
have been completed (B-1 and B-2). The remaining two borings within Caltrans
right-of-way, which are more difficult to access and would require coordination
with Caltrans for traffic control to close the US101 southbound exit ramp to
southbound Produce Avenue and temporary lane closures for both northbound
and southbound Produce Avenue, will be done once the District receives the
encroachment permit from Caltrans. The encroachment permit was initially
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submitted to Caltrans on September 27, 2016. District staff re-submitted the
permit application to Caltrans on February 17, 2017, based on Caltrans’
comments. The draft report and alternative design concepts are anticipated to be
submitted to the District within 4 months after all borings have been completed.
6. Utah Avenue to Bay
Ann advised that as previously reported, the District submitted to the California
Governor’s Office of Emergency Services (CalOES) a full application for FEMA
Hazard Mitigation Grant Program (HMGP) funding of the flood walls
downstream of the Utah Avenue Bridge on June 16, 2016. A revised application
was re-submitted on September 7, 2016, to include pre-award costs and address
storm surge condition (in addition to the 100-year event, 100-year tide, 3 ft. of
freeboard), and the SLR for the projected useful life of the project, which
increased the total project costs from $4,100,000 to $4,280,000. The additional
cost would be funded with Zone revenue as the maximum allowed grant amount
remains at $3,000,000. The District received a letter from CalOES dated October
28, 2016 with confirmation that the application has been put on a waiting list to be
submitted to FEMA if funding becomes available. CalOES indicated that FEMA
may take 3-6 months (from November 2016) or up to a year to review the
applications recommended for funding. The District is proceeding with the
preliminary design of the project in which case the expenditures would be
considered as part of the 25% local match. The consultants selected for the
preliminary design intend to perform the topographic/bathymetric surveys and
geotechnical investigations during March and April 2017. The final design is
anticipated to be completed in the spring of 2018.
District staff performed unscheduled inspections of the Colma Creek Flood
Control Channel on January 10, 2017, and January 11, 2017, during King Tide
events (see photos below showing flooding of parking areas on the right side of
the channel looking downstream and between Utah Avenue and Navigable
Slough).
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7. Sea Level Rise Preparedness
Ann advised to see discussion under Utah Avenue to Bay section regarding
potential grant funds to include design elements to include SLR mitigation in the
construction of the project.
8. Multi-jurisdictional Regional Stormwater Capture Project at Orange
Memorial Park (SSF and San Mateo Countywide Water Pollution
Prevention Program)
Ann advised that the City of South San Francisco is currently evaluating the
feasibility of including this project in their 2017-18 CIP package. If this project
moves forward it would include funding from Caltrans (they need to meet
stormwater requirements as well).
9. Colma Creek Technical Advisory Committee (TAC) Meetings
Ann advised that as reported previously, the TAC recommended adding a project
to the CIP list for the development of a hydrologic analysis of the entire flood
control channel (may or may not include underground box culverts) for design
standard similar to those required for the HGMP grant application (i.e. storm
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surge condition, 100-year event, 100-year tide, 3 ft. of freeboard and SLR). The
results of the analysis would be used to develop a new master plan or similar
document for the foreseeable future. This has been added to the CIP list; however,
District resources have not been put to this effort yet.
The TAC met on February 21, 2017, to continue the discussion on collaboration
between the District and SSF, Daly City, and Colma for maintenance type
activities. The agreement between SSF and the County has been executed and
became effective October 12, 2016. The Town of Colma has signed the MOA and
forwarded it to the District for signatures.
The TAC also discussed private development and public projects that could affect
the Colma Creek flood control channel. The Costco Parking Lot Expansion
Project has submitted revised hydraulic impact analysis report to the District for
review. The City Planning Commission is scheduled to consider the approval of
the environmental clearance documents of this project in April 2017. The City is
finalizing plans to hire a contractor to remove two pedestrian bridges over Colma
Creek. One of the bridges to be removed is the closed bridge near Antoinette Lane
and the other one is a seldom used bridge in the Orange Park area. The pre-
construction meeting was held on March 13, 2017, and Bob Hahn indicated that
both pedestrian bridges will be removed by the end of April 2017.
IV. DISCUSSION ITEMS
• Sue asked a question about the moving walls (by Produce). and it was confirmed
at the meeting that the pending project is planned to address this and the quarterly
maintenance inspections are done to observe any additional changes. Bob Hahn
pointed out that both walls are moving. Ann explained that getting to the channel
is difficult especially when Caltrans is involved and closing down 101.
• 3/11 cleanup – how to get into loop on these events; two days before is not
enough notice
o Ann requested anyone interested to send her an email on who to include.
Additionally she will see what can be done to provide a longer period of
notification.
o Supervisor Dave Pine asked a question about who organizes the clean-up
events
Ann clarified that the District organized the March 11, 2017, event
but also coordinated with the City.
• Helen asked a question about whether the National River Day and Earth Day
events are two separate events or just one combined event? Also working with
San Bruno Mountain Watch on some of these events.
o Ann will check into the event details and report back.
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• Colma Creek Flood Control Zone Financial Summary: Ann distributed and
reviewed the updated Financial Summary (Attachment I) showing revenue for FY
16-17 thus far along with expenditures (as of the end of January).
o Sue Digre asked what the meaning of “Accepted by the District” means in
this context
Ann clarified that when “Accepted by the District” is indicated as
“Yes” that means that the District has issued a Notice of
Completion and “No” indicates that the project is ongoing.
o Brad Donohue asked a question regarding District Operations, O&M costs
(back page), “Is that inclusive of what is budgeted for SSF & Colma?”
Notation is based on average expenditures from previous fiscal
years and does not include work not completed/performed. Make a
note to include in number to pay SSF and Colma.
o Question regarding Estimated Total Cost
This only includes the study fees (CDM-Smith) as per the footnote.
Total is confusing unless additional phases are listed as separate
project line items.
• Colma Creek Capital Improvement Project (CIP) List: Ann distributed and
updated the Committee with the status of the current CIP projects (Attachment II).
The highlighted information has been modified/updated since the last Committee
meeting.
o Construction of Channel Discharge Pipe Repair/Replacement at 15 sites
(S. Airport Blvd. – Utah Avenue) has been moved out due to permit
timing.
• Helen reported that the news stations showed how high the water level was in the
channel during recent storms.
o Ann clarified that the height of the water in the channel was shown, not
that the water had overtopped the channel.
o Members recounted previous events (1981) and commented how many
improvements have been made over the years.
• SSF Adopt a Drain
o Are any other cities doing this or similar?
o Drives citizen buy-in/ownership – proactive vs. reactive
o Should be brought forward to C/CAG (Karyl Matsumoto is a good
contact).
• Advisory Committee members
o Richard Irli will continue
• Erica Powell enhanced flood control grant application to (regional resiliency)
SSF, SB, COLMA, SFO $1.2M in-kind $500K
• Maps of MOA with Colma & SSF
o Jurisdictional
• Verano – City/Town boundary on east side of creek is SSF and needs permit from
BART. Residents are in Colma
VII. ACTION ITEMS
• None
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ADJOURNMENT
Helen Fisicaro adjourned the meeting at 4:18 p.m.
Next meeting: Tuesday, June 13, 2017 at 3:00 p.m.
City of South San Francisco
Corporation Yard Conference Room
550 North Canal Street
South San Francisco, CA 94080
Minutes submitted by: Kari Jung, City of South San Francisco
Page 11 of 16
Updated for 12/13/2016 Committee Meeting
G:\Users\utility\Colma Creek FCD\WORD\ADVISORY.COM\Advisory Committee Members and Terms - 10-2016.doc
Terms for Members of the Colma Creek Citizens Advisory Committee*
Member Name and
Member
Designation
Appointed
by
Initial Term
Expiration
(duration)
Subsequent Term
Expiration (total
appointment
duration)
Subsequent Term
Expiration (total
appointment
duration)
City Appointed Representatives (Members)
Helen Fisicaro, Town
of Colma
Representative
Colma
Town
Council
March 31,
2004 (2 yr)
March 31, 2014
(12 yr)
March 31, 2018
(16 yr)
Irene O’Connell, City
of San Bruno
Representative
San Bruno
City
Council
March 31,
2013
(4 yr)
March 31, 2017
(4 yr)
Judith Christensen,
City of Daly City
Representative
(Replaced Carol Klatt
per letter dated Mar.
10, 2015)
Daly City
Council
March 31,
2018 (3 yr)
Sue Digre, City of
Pacifica
Representative
Pacifica
City
Council
March 31,
2012
(4 yr)
March 31, 2016
(8 yr)
March 31, 2020
(12 yr)
Mike Futrell, City of
South San Francisco
Representative
SSF City
Council
March 31,
2018
(4 yr)
Board of Supervisor Appointed Representatives (Members at large)
Kamala Silva Wolfe,
Member at large SSF Board of
Supervisors
March 31,
2020
(4 yr)
Richard Irli,
Member at large SSF Board of
Supervisors
March 31,
2017
(3 yr & 8 mo.)
Edward Bortoli,
Member at large SSF Board of
Supervisors
March 31,
2018
(4 yr)
Gail DeFries,
Member at large Daly
City
Board of
Supervisors
March 31,
2006
(4 yr)
March 31, 2014
(12 yr)
March 31, 2018
(16 yr)
* Twelve-year term limit for Committee Members, unless specific exception is made by Board
of Supervisors or State law
Notes:
• Committee has 9 Members
• 5 members city representatives appointed by City Councils in the CCFCZ
• 4 “at large” members appointed by the Board of Supervisors
• All Committee Members must be property owners residing in the CCFCZ
• Committee Members appointed by City Councils must reside in the City
Page 12 of 16
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San Mateo County Flood Control District
Colma Creek Flood Control Zone
Citizens Advisory Committee Meeting
3:00 pm – Tuesday, June 13, 2017
Summary on the Status of the Colma Creek Flood Control Zone Projects, Maintenance, Repair, and Technical
Advisory Committee Meetings
El Camino Box Culvert and Mission Road Diversion Structure
The District is working on retaining a consultant to perform a condition assessment of the box culverts
starting approximately 300 feet north of the intersection of El Camino Real and “A” Street in Daly City to
the beginning of the BART section at the Treasure Island Mobile Home Park. Work will include an
inspection of the channel, development of a detailed structural assessment and repair recommendations,
mapping of all storm drain inlets within the project vicinity, and a full report with the above information.
BART Co-op Project
No update on this section of the channel to report.
Colma Creek Improvements between Spruce and San Mateo Avenues
No update on this section of the channel to report except that the District will continue to monitor this
section of channel regularly for wall movement or settlement at a segment of the south wall immediately
downstream of the San Mateo Avenue Bridge.
Mitigation Sites downstream of Utah Avenue
District staff and Sheriff Work Program (SWP) participants continue to perform planting, weeding, and
trash pick-ups at the five Mitigation Sites (2a, 2b, 2c, 3, and 4). The next SWP cleanup date has been
scheduled for June 17, 2017.
The District’s contractors have continued to perform monthly maintenance at Site 4 and quarterly
maintenance at Sites 2 and 3. This schedule was developed based on the amount of work anticipated to
maintain the sites and increase or sustain plant survival rate.
A total of 24 volunteers participated on National River Cleanup Day and Earth Day cleanup events, which
took place on April 22, 2017, and May 20, 2017, respectively.
The following table summarizes the amount of trash removed from the Mitigation Sites since 2005 and the
trash pick-up dates from 2015 through 2017. An additional 8.08 CY of trash have been removed from the
Mitigation Sites since the last Advisory Committee meeting.
Year Amount of Trash Removed
(Cubic Yard) Event Dates *
2017 21.43 1/7, 1/21, 2/4, 2/18, 3/4, 3/11, 3/18, 4/1, 4/22, 5/6, 5/20
2016 33.00 1/2, 1/23, 2/13, 2/27, 3/19, 4/16, 4/23, 5/14, 5/22, 6/11, 7/23,
8/20, 9/17, 9/24, 10/22, 11/5, 12/3, 12/17 (18 times)
Page 13 of 16
Page 2 of 4
Year Amount of Trash Removed
(Cubic Yard) Event Dates *
2015 38.98 1/10, 1/24, 2/7, 2/21, 3/7, 3/21, 4/4, 4/18, 5/2, 5/16, 6/20,
7/18, 8/15, 9/13, 9/19, 10/17, 11/14, 12/12 (18 times)
2005 - 2014 503.10 12-19 times per year.
Total 596.51
*Number of event dates increased per mitigation required for Channel Wall Repair Upstream of Spruce Avenue.
Maintenance of Existing Channel
To address recurring homeless encampment issues under the San Mateo Avenue bridge, District authorized
the City of S. San Francisco (City) to install new fences at the bridge abutments under the recently executed
Memorandum of Agreement (MOA) for shared services.
The quarterly inspection of the Colma Creek Flood Control Channel was performed on May 16, 2017 (See
Maintenance Matrix Binder). Representatives from the City accompanied District staff during the
inspection. Issues requiring enforcement by the City or the Town have been forwarded to the respective
entity.
As previously noted, the District submitted the permit applications for the long-term maintenance permit to
the regulatory agencies on December 29, 2015 and the Initial Study/Mitigated Negative Declaration
(IS/MND) to the State Clearing House on June 10, 2016. On October 18, 2016, the IS/MND was approved
by the County Board of Supervisors. The Notice of Determination was filed with the State Clearinghouse
thereafter to complete the CEQA process. The California Department of Fish and Wildlife permit has been
finalized and the District is prepared to sign it once permits from the US Army Corps of Engineer and the
State Regional Water Board have been issued. It is anticipated that the Corps permit to the District could
be issued prior to the end of June 2017. At the last Advisory meeting the District had anticipated this to be
May 2017.
A new bathymetric survey of the channel between US 101 and the Navigable Slough has been completed.
The new survey information will be used to evaluate sediment accumulation in this section of the channel
to determine the need for dredging (Capital Improvement Program Project #7). The District has requested a
proposal from a consultant to perform the work to develop channel cross sections intended to depict the
level of sedimentation within the channel since the last survey was completed in 2013. The scope of work
will also include revisions to the hydraulic model that would forecast flow conditions during a 50-year
storm event and projected sea level rise.
Produce Avenue – Channel Wall Project
The District continues to monitor the channel walls immediately upstream and downstream of the Produce
Avenue Bridge. Also as previously reported, the District authorized CDM-Smith to perform geotechnical
and geophysical investigations on the cause of the wall movements, develop repair options, and prepare a
report with recommendations for a Not-to-Exceed amount of $260,320. Two borings outside of the
Caltrans right-of-way, as shown on the map below, have been completed (B-1 and B-2). The remaining two
borings within Caltrans right-of-way, which are more difficult to access and would require coordination
with Caltrans for traffic control to close the US101 southbound exit ramp to southbound Produce Avenue
and temporary lane closures for both northbound and southbound Produce Avenue, will be done once the
District receives the encroachment permit from Caltrans. The encroachment permit was initially submitted
to Caltrans on September 27, 2016. District staff re-submitted the permit application to Caltrans on
February 17, 2017 based on Caltrans’ comments. The permit was received on April 10, 2017 and boring
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Page 3 of 4
work is scheduled to be performed on June 28, 2017. The draft report and alternative design concepts are
anticipated to be submitted to the District within 4 months after all borings have been completed.
Utah Avenue to Bay
As previously reported, the District submitted to the California Governor’s Office of Emergency
Services (CalOES) a full application for FEMA Hazard Mitigation Grant Program (HMGP) funding
of the flood walls downstream of the Utah Avenue bridge on June 16, 2016. A revised application
was re-submitted on September 7, 2016 to include pre-award costs and address storm surge condition
(in addition to the 100-year event, 100-year tide, 3 ft. of freeboard), and the SLR for the projected
useful life of the project, which increased the total project costs from $4,100,000 to $4,280,000. The
additional cost would be funded with Zone revenue as the maximum allowed grant amount remains
at $3,000,000. The District received a letter from CalOES dated October 28, 2016 with confirmation
that the application has been put on a waiting list to be submitted to FEMA if funding becomes
available. In late March 2017, CalOES informed the District that more funding has become available
for HMGP funding due to the declaration of various emergencies as a result of the severe winter
storms. The District was encouraged to submit another application for the project under the new
funding program. The District submitted the application to CalOES on April 10, 2017 and is
currently awaiting the result of the application review by CalOES and FEMA. The District is
proceeding with the preliminary design of the project in which case the expenditures would be
considered as part of the 25% local match. The consultants selected for the preliminary design has
completed the topographic/bathymetric surveys and geotechnical investigations in April and May of
2017. Work on the technical studies required for environmental compliance and preliminary design is
scheduled to start in July of 2017. The final design is anticipated to be completed in the spring of
2018.
Sea Level Rise Preparedness
See discussions under Maintenance of Existing Channel section regarding the hydraulic modeling to
be performed based on the latest survey data, and Utah Avenue to Bay section regarding potential
grant funds to include design elements to include SLR mitigation in the construction of the project.
Page 15 of 16
Page 4 of 4
Multi-jurisdictional Regional Stormwater Capture Project at Orange Memorial Park (SSF and
San Mateo Countywide Water Pollution Prevention Program)
A funding agreement between the City and Caltrans for this project was scheduled to be considered
by the City Council on April 26, 2017.
Colma Creek Technical Advisory Committee (TAC)
The TAC met on April 11, 2017 to continue the discussion on collaboration between the District and
SSF, Daly City, and Colma for maintenance type activities. Work is being performed or scheduled
by City and Town staff or contractors under the MOAs.
On April 5, 2017, the City’s contractor removed two pedestrian bridges over Colma Creek - one
closed bridge near Antoinette Lane, and another seldom used bridge in the Orange Park area. Both
bridges were removed without incident (see pictures below). District staff attended the pre-
construction meeting with the contractor and was present during the actual work because of
coordination through the TAC.
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