FLOOD CONTROL DISTRICT

STATEMENT OF PROCEEDINGS COUNTY OF SAN DIEGO FLOOD CONTROL DISTRICT REGULAR MEETING WEDNESDAY, SEPTEMBER 13, 2023, 9:00 AM COUNTY ADMINISTRATION CENTER, ROOM 310 1600 PACIFIC HIGHWAY SAN DIEGO, CA 92101 A. REGULAR SESSION: Meeting was called to order at 9:00 a.m. PRESENT: Directors Nora Vargas, Chair; Terra Lawson-Remer, Vice-Chair; Joel Anderson; Jim Desmond; also, Ryan Sharp, Assistant Clerk of the Board of Directors. ABSENT: (District 4 Seat Vacant) B. Statement (just cause) and/or Consideration of a Request to Participate Remotely (emergency circumstances) by a Director, if applicable. C. Non-Agenda Public Communication: Opportunity for members of the public to speak to the Board on any subject matter within the Board’s jurisdiction but not an item on today’s agenda. D. Approval of the Statement of Proceedings/Minutes for the meeting August 30, 2023. ACTION: ON MOTION of Director Anderson, seconded by Director Desmond, the Board of Directors of the San Diego County Flood Control District approved the Statement of Proceedings/Minutes for the Regular Board of Directors meeting of August 30, 2023. Vargas, Anderson, Lawson-Remer, Desmond NOTICE: THE BOARD OF SUPERVISORS MAY TAKE ANY ACTION WITH RESPECT TO THE ITEMS INCLUDED ON THIS AGENDA. RECOMMENDATIONS MADE BY COUNTY STAFF DO NOT LIMIT ACTIONS THAT THE BOARD OF SUPERVISORS MAY TAKE. MEMBERS OF THE PUBLIC SHOULD NOT RELY UPON THE RECOMMENDATIONS IN THE BOARD LETTER AS DETERMINATIVE OF THE ACTION THE BOARD OF SUPERVISORS MAY TAKE ON A PARTICULAR MATTER. Agenda Item SubjectAgenda # 1. CONTINUATION OF EMERGENCY STORM DRAIN REPAIRS IN THE UNINCORPORATED COMMUNITY OF BONITA, 2920 BRIARWOOD ROAD AND RELATED CEQA EXEMPTION [FUNDING SOURCE: AVAILABLE PRIOR YEAR DISTRICT FUND BALANCE] (4 VOTES) 1WEDNESDAY, SEPTEMBER 13, 2023

1. SUBJECT: OVERVIEW On June 12, 2023, a sinkhole was reported in the parking lot of a condominium complex at 2920 Briarwood Road within the unincorporated community of Bonita. It was caused by the collapse of an existing 24-inch corrugated metal storm drain pipe (24-inch CMP) that passes through Caltrans and San Diego County Flood Control District (District) rights-of-way. Due to the depth and condition of the 24-inch CMP, it was not feasible to accurately determine the cause and exact location of the collapse without additional field investigation by excavating around the pipe to locate the point of failure and make any necessary repairs. For a time, the hole remained stable as the District attempted to video inspect the extent of the damage and develop a plan for repair. However, on Monday, June 26, 2023, Department of Public Works (DPW) staff noticed that the sinkhole had begun to enlarge, bringing down a support post of an adjacent carport structure making it necessary to declare an emergency and forego competitive solicitation of the repair work. In accordance with County Administrative Code Section 402, “Emergency Preparedness,” a notice to proceed with emergency repairs was issued to Flatiron West, Inc. on June 27, 2023 (Contract No. 569348), to repair or replace the damaged 24-inch CMP and any other related drainage facilities, including backfilling the sinkhole and repairing the parking lot. The total cost of repairing the storm drain and the areas damaged by the sinkhole is estimated to be $1,500,000. The repairs are estimated to be completed in November 2023. On August 30, 2023 (1), the County Board of Supervisors, acting as the Board of Directors of the San Diego County Flood Control District (Board), found there was a need for the emergency repair of the 24-inch CMP and provided authorization to continue with the emergency action. Pursuant to Public Contract Code 22050, until the repairs are completed, the Board is required to determine at every regularly scheduled Board meeting that there is a need to continue the emergency action. This report updates the Board on the status of the sinkhole and 24-inch CMP repair work. Today’s action requests the Board to find that there is a need to continue the emergency repair work. RECOMMENDATION(S) CHIEF ADMINISTRATIVE OFFICER 1. Find the proposed project is statutorily exempt from California Environmental Quality Act (CEQA) review pursuant to Sections 15269(b) and 15301 of the CEQA Guidelines because the proposed project includes emergency repairs to a publicly owned service facility necessary to maintain service essential to the public health, safety or welfare, and because it consists of the minor alteration of existing public facilities involving negligible or no expansion of existing use. 2. Pursuant to Public Contract Code Section 22050(c)(2), find that there is a need to continue the emergency sinkhole repair without giving notice for bids to let a contract. (4 VOTES) EQUITY IMPACT STATEMENT The failed 24-inch corrugated metal storm drain pipe is a publicly maintained facility that conveys rainfall runoff and flood waters off the roadways and properties in the immediate vicinity. The District is responsible for the continued maintenance and proper function of the 1WEDNESDAY, SEPTEMBER 13, 2023

storm drain system in this area. Approval of the emergency repairs will provide an overall benefit to the members of the community who live in the condominium complex and to those who use the public roads in the area. SUSTAINABILITY IMPACT STATEMENT The emergency repairs have environmental, health and well-being benefits that support the sustainability of the environment and community. The repairs will reduce the risk to life and property caused by the sinkhole and restore the proper function of the storm drain to convey runoff and flood waters, which will ensure the safety of the public and surrounding environment. FISCAL IMPACT Funds for this request are included in the Fiscal Year 2023-24 Operational Plan for the Flood Control District (District). If approved, this request will result in current year cost of $1,500,000. The funding source is available prior year District fund balance. There will be no change in net General Fund cost and no additional staff years. BUSINESS IMPACT STATEMENT Failure to complete the required repairs in a timely manner will result in the continued expansion of the sinkhole which would result in additional property damages and potential damages from flood waters on public roadways and properties in the immediate vicinity. ADVISORY BOARD STATEMENT N/A BACKGROUND A sinkhole in the parking lot of a condominium complex at 2920 Briarwood Road in the unincorporated community of Bonita was reported to the San Diego County Flood Control District (District) on June 12, 2023. The Department of Public Works (DPW) field crews and engineering staff attempted to identify the location and severity of the pipe failure by video inspecting a 30-foot section of 24-inch corrugated metal storm drain pipe (24-inch CMP), which is more than 30 feet deep. This was deemed infeasible due to large amounts of sediment and debris that had entered the pipe. The California Department of Transportation (Caltrans) offered assistance to clean out sediment and debris using their forces and equipment, as they have adjacent storm drain infrastructure that connects to the failed pipe. Unfortunately, due to the depth and amount of sediment in the pipe, the multiple attempts to clear the pipe were unsuccessful. On Monday, June 26, 2023, DPW staff observed that the sinkhole had begun to enlarge, bringing down a support post of an adjacent carport structure. To mitigate the risk of further damage to private property and the connecting storm drain systems, it was necessary to declare an emergency and forego the competitive solicitation of the repair work. In accordance with County Administrative Code Section 402, “Emergency Preparedness,” a notice to proceed with emergency repairs was issued to Flatiron West, Inc., on June 27, 2023 (Contract No. 569348). The total cost of repairs is estimated at $1,500,000. The repairs are 2WEDNESDAY, SEPTEMBER 13, 2023

estimated to be completed in November 2023. On August 30, 2023 (1), County Board of Supervisors, acting as the San Diego County Flood Control District (Board), found there was a need for the emergency repair of the storm drain and provided authorization to continue with the emergency action. Pursuant to Public Contract Code 22050, until the repairs are completed, the Board is required to determine at every regularly scheduled board meeting that there is a need to continue the emergency action. As of August 31, 2023, the project is approximately 65% complete. For the last several weeks, the contractor has been installing the forms and metal rebar to pour the concrete to build the new 40-foot deep cleanout. The concrete had to be poured in five stages to allow the previous concrete to harden before continuing with the next stage. The majority of construction of the new cleanout and the adjacent storm drain connections is estimated to be completed by the end of September. Once that is completed, the ground areas disturbed by the construction activities can start being restored by backfilling in the soil that was removed, and the aboveground improvements can be re-installed. Active coordination with Caltrans and the condominium complex representatives occurs on a regular basis. Upon completion of the remaining work, the repairs will be inspected by the District, Caltrans and the condominium complex representatives before releasing the contractor and issuing a Notice of Completion. This report updates the Board on the status of the sinkhole and storm drain repair work. Today’s action requests the Board to find that there is a need to continue the emergency repair work. ENVIRONMENTAL STATEMENT The proposed project includes an emergency repair and replacement of a publicly maintained 24-inch corrugated metal storm drain pipe that has failed and has created a sinkhole on private property. The proposed emergency repair is necessary to maintain services essential to protect public health and safety and, therefore, is statutorily exempt from CEQA pursuant to Section 15269(b) of the State CEQA Guidelines. In addition, the project includes repairing existing facilities involving negligible or no expansion of existing use and, therefore, is categorically exempt from CEQA pursuant to Section 15301 of the State CEQA Guidelines. LINKAGE TO THE COUNTY OF SAN DIEGO STRATEGIC PLAN Today’s proposed actions support the Sustainability (Resiliency) and Community (Safety) Strategic Initiatives in the County’s 2023-2028 Strategic Plan. These emergency repairs will restore function of the storm drain system and eliminate the existing hazard, which will reduce the future flood hazards and allow the residents to be able to fully use the parking areas of the condominium complex again. ACTION: ON MOTION of Director Desmond, seconded by Director Lawson-Remer, the Board of Directors of the San Diego County Flood Control District took action as recommended, on Consent. 3WEDNESDAY, SEPTEMBER 13, 2023

Vargas, Anderson, Lawson-Remer, Desmond There being no further business, the Board of Directors of the San Diego County Flood Control District adjourned at 9:46 a.m. ANDREW POTTER Clerk of the Board of Directors of the San Diego County Flood Control District Notes: Vizcarra NOTE: This Statement of Proceedings sets forth all actions taken by the San Diego County Flood Control District on the matters stated, but not necessarily the chronological sequence in which the matters were taken up. 4WEDNESDAY, SEPTEMBER 13, 2023