HomeMy WebLinkAbout2020-12-17; 2018 Kelly Channel Emergency Repair Completion; Gomez, PazTo the members of the:
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,<ilTY1 COUNCIL
Date1Jl.1P:>CA \/ CC ✓
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Dec. 17,2020
To:
From:
Via:
Re:
Council Memorandum
Honorable Mayor Hall and Members of the City Council
Paz Gomez, Deputy City Manager, Public Works
Geoff Patnoe, Assistant City Manager r;::;:y
2018 Kelly Channel Emergency Repair~pletion
{city of
Carlsbad
Memo ID #2020270
This memorandum provides an update to a previous memorandum dated Oct. 3, 2018, on the
emergency repair that addressed a damaged portion of concrete channel drainage facility
adjacent to Kelly Drive in 2018 (Attachment A).
Background
In fall 2018, staff identified a failed section of concrete channel adjacent to private properties
on Kelly Drive, commonly referred to as Kelly Channel. A 20-foot long void spanned one of the
side walls of the facility. The extent of erosion had displaced soil from underneath the
structure, and the void was beginning to encroach under the fence line of adjacent residences.
Due to the immediate threat to private properties, staff submitted a Regional General Permit
No. 63 (RGP 63) application to the U.S. Army Corps of Engineers (USACE) for Repair and
Protection Activities in Emergency Situations on Sept. 27, 2018.
On Nov. 15, 2018, USACE issued an RGP 63 Emergency Authorization (Permit) to the city
authorizing the proposed repair plan. The Permit contained post-project requirements to
reestablish and monitor impacted vegetation for two years after the repair. The repair to the
facility (Project) was completed on Nov. 27, 2018, which required maintenance and monitoring
until Nov. 27, 2020.
Discussion
The Project was located within a city drainage easement that required clearing of vegetation to
. create an ingress/egress to the site and to establish a work area. The site conditions allowed for
only non-native vegetation removal as confirmed by a biologist who delineated the clearing
areas.
A special condition imposed by the Permit required the city to restore the cleared area and to
provide maintenance and monitoring for two years after the repair completion. Success criteria
imposed by the Permit required this reestablished area to contain less than 10% non-native
vegetation coverage after the two years of maintenance. Annual reports submitted to USACE
were also required by the Permit to provide updates on the progress.
Public Works Branch
Transportation Department
1635 Faraday Avenue I Carlsbad, CA 92008 I 760-602-2730 t
Council Memo -2018 Kelly Channel Emergency Repair Completion
Dec. 17,2020
Page 2
Since the completion of the repair work, the city has been actively maintaining the
reestablished area by removing invasive species, hydroseeding with native plant species and
conducting environmental monitoring and reporting as required by the Permit.
On Dec. 10, 2020, staff received a letter from USACE verifying that the required restoration of
temporary impacts associated with the Project has achieved its goal of less than 10% cover of
non-native and invasive species (Attachment B). Accordingly, the city is now released from the
requirements of maintaining an~ monitoring the reestablished areas. This was the only
remaining condition of the Permit issued by USACE. The repair project is now complete with
this verification.
In December 2019, an additional repair to a different section of the channel occurred, and
emergency authorization was also granted by USACE at that time. That section of channel was
accessible from Kelly Drive and avoided impacts to adjacent vegetation. Therefore, plant
reestablishment and maintenance/monitoring conditions were not imposed by the emergency
permit obtained from USACE in 2019.
Next Steps
Staff will continue to monitor the structural condition of Kelly Channel and provide
maintenance and repairs as necessary.
In addition to monitoring and maintenance efforts, staff is currently revising the scope and
reviewing the budget of the Kelly Channel Replacement Project, Capital Improvement Program
(CIP) Project No. 6606, which will replace the 1,000-foot long concrete channel in its entirety.
Staff will prepare a Request for Qualifications (RFQ) for engineering and environmental services
to design the project with an estimated release of the RFQ in fiscal ye~r 2021-22.
Attachments: A. Council Memo dated Oct. 3, 2018
B. U.S. Army Corps of Engineers, Los Angeles District, letter dated Dec. 10, 2020
cc: Scott Chadwick, City Manager
Celia Brewer, City Attorney
Gary Barberio, Deputy City Manager, Community Services
Laura Rocha, Deputy City Manager, Administrative Services
Robby Contreras, Assistant City Attorney
Tom Frank, Transportation Director
James Wood, Environmental Manager
Hossein Ajideh, Engineering Manager
Scott Lyle, Senior Engineer
Daniel Zimny, Associate Engineer
To the members of the:
CITY COUNCIL
ACM ✓ CA t/ CC
Date to}~ CM\/ COO ✓
' - -
Oct. 3, 2018
CHRON FILE
Council Memorandum
To:
From:
Via:
ttonorable Mayor Hall and Memb~rs of the City Council
Paz Gomez, Public Works Director ).,
Elaine Lukey, Chief Operations Office~~
Re: Kelly Channel Emergency Repair
Attachment A
{cityof
Carlsbad
The purpose of this memorandum is to provide information regarding an emergency repair on
Kelly Channel, in which a 20-foot long span of the concrete-lined channel has been
compromised.
Background
A resident on 4862 Kelly Drive informed city staff of a failed portion of concrete-lined channel
known as Kelly Channel, which runs adjacent to the owner's backyard and is encompassed by a
city drainage easement. A 20-foot long span of Kelly Channel has been compromised causing
approximately 27 cubic.yards of backfill to be displaced. The extent of erosion is now
encroaching the fence line of the backyard, and the resident has requested the city resolve it as
soon as possible.
Discussion
On Sept. 25, 2018, the city held a site walk with staff from the San Diego Regional Water Quality
Control Board, U.S. Army Corps of Engineers and California Department of Fish and Wildlife.
These resource agencies collectively agreed that a Regional General Permit 63 would be the
appropriate vehicle to expedite repairs in emergency situations to mitigate potential imminent
loss of private property. The Regional General Permit 63 application and supplemental
documents were prepared and signed on Sept. 27, 2018.
Next Steps
The repair work will begin within 14 days from authorization of the resource agencies and will
be completed within five days after start.
At least 72 hours prior to the start of work, community outreach will be conducted wi.th Kelly
Elementary School and the residences on Kelly Drive (4858, 4862, 4866, 4868 and 4870) that
are in near proximity to the work area and may experience parking impacts from equipment
and crew s!.aging. The repair work will occur within the city's drainage easement adjacent to
these properties.
Public Works Department
Faraday Center 1635 Faraday Avenue I Carlsbad, CA 92008 I 760-602-2730
Honorable Mayor Hall and Members of the City Councii
Oct. 3, 2018 -.
Page 2
As part of a larger capital improvement project, staff is evaluating the flood control system in
the area which influences Kelly Channel to determine an appropriate solution.
cc: Scott Chadwick, City Manager
Celia Brewer, City Attorney
Gary Barberio, Assistant City Manager
Kristina Ray, Communication Manager
/
DEPARTMENT OF THE ARMY
U.S. ARMY CORPS OF ENGINEERS, LOS ANGELES DISTRICT
5900 LA PLACE COURT, SUITE 100
CARLSBAD, CALIFORNIA 92008
December 10, 2020
SUBJECT: Release from Monitoring Requirements
Paz Gomez
City of Carlsbad
1635 Faraday Ave
Carlsbad, California 92008
Dear Ms. Gomez:
Attachment B
I am responding to your Department of the Army (DA) permit (File No. SPL-2018-00626-
JDR), dated November 15, 2018, to discharge dredged and/or fill material into waters of the
U.S., in association with the City of Carlsbad -Kelly Channel Failure. The proposed work took
place in the City of Carlsbad, San Diego County, California.
Pursuant to Special Condition No. 3 of your DA pennit dated November 15, 2018, you were
required to restore tempora1y impacts, including restoring contours and vegetation. In addition,
two years of monitoring were required to demonstrate that less than ten ( 10) percent of the areas
disturbed by the project are vegetated by non-native and invasive plant species. I received your
second annual monitoring report, titled "Year 2 Annual Mitigation Monitoring Report" prepared
by LSA and dated May 2020.
Based on the information contained in monitoring repo1t, I have determined the required
restoration of temporary impacts has achieved the goal of less than ten ( 10) percent cover of non-
native and invasive species. Accordingly, no further monitoring is required.
However, this letter does not relieve you, as the Permittee, of any other requirements
associated with the Nationwide Permit Verification. Thank you for participating in our
Regulatory Program. If you have any questions, please contact me at (760) 602-4840 or via e-
mail at Michael.A.Ladouceur@usace.army.mil. Please help me to evaluate and improve the
· regulatory experience for others by completing the customer survey form at
http:/ /corpsmapu.usace.army.mil/cm _ apex/f?p=regulatory _ survey.
Sincerely,
fl . " / /7 Date: 2020.12.1 0
'/~?J7JL-c-15:53:01 -08'00'
Michael A. LaDouceur
Senior Project Manager
San Diego and Imperial Counties