To: Honorable Mayor and Members of City Council
From: Julie Lucido, Public Works Director
Prepared By: Jessica Lowe, Deputy Public Works Director
TITLE:
Title
Rose Lane Sewer Separation - Reimbursement Agreement with the Napa Sanitation District
LABEL
RECOMMENDED ACTION:
Recommendation
Adopt a resolution authorizing the Public Works Director to execute on behalf of the City a Reimbursement Agreement with the Napa Sanitation District in an amount of up to $300,000 to reimburse the District for a portion of the cost to construct a sewer separation project on Rose Lane in the City of Napa; amending the Capital Improvement Plan as Documented in Council Budget Amendment No. 2P5; and determining that the actions authorized by this resolution are exempt from CEQA.
Body
DISCUSSION:
The Rose Lane Sewer Separation is an existing CIP project that will remove a longstanding cross connection between the City’s storm drain system and the Napa Sanitation District sanitary sewer system.
Sewer systems that convey both sanitary sewage and stormwater through a single pipe are referred to as combined sewer systems. Outside of heavy rain events, these systems can adequately convey flows to wastewater treatment facilities. During heavy rainfall or when the capacity of the combined sewer system is exceeded, the untreated sewage and stormwater can overflow, causing backups and overflow onto surface streets or designed overflow locations. This occurrence can lead to regulatory fines, operational issues at the sewage treatment plant, and poor water quality. Because of the public health implications, combined sewer systems have not been permitted since the first half of the 20th century, and largescale efforts to separate combined sewers have been undertaken.
At the end of Rose Lane, the City’s storm sewer is connected to a Napa Sanitation District (NapaSan) sanitary sewer line. A project to separate the two systems was approved by Council in the FY 16/17 budget. The project stalled due to the design complexities and because it has not had adequate funding for construction. This year a design that meets code requirements and the standards of all affected agencies was completed.
NapaSan has identified this project as a priority for its agency, and as such, is partnering with the City to fund the project construction. The reimbursement agreement will allow the City work to be completed by NapaSan’s contractor as part of a larger NapaSan project. The City will pay half the cost of the Rose Lane construction contract cost up to $300,000, will have the ability to decide to not award the work if the bid results are not favorable, and will have discretionary authority for approving additional costs such as change orders. The City will inspect and take ownership of the new storm sewer line at the end of the construction project.
FINANCIAL IMPACTS:
The proposed FY2023-24 5-Year Capital Improvement Program Plan revision will return $320,000 of ARPA funding from the Storm Drain Infrastructure Repairs Project (SD23PW01) to the ARPA fund balance and transfer $320,000 of ARPA funds to the Rose Lane Sewer Separation Project (SD16PW01). SD16PW01’s existing available balance of approximately $38,000 in addition to the $320,000 budget adjustment will be used to fund the reimbursement agreement cost share and project support costs such as inspection services and project administration.
CEQA:
City staff recommends that the City Council determine that the Recommended Action is exempt from CEQA pursuant to CEQA Guidelines Section 15302(c), which exempts the replacement or reconstruction of existing utility systems involving negligible or no expansion of capacity.
DOCUMENTS ATTACHED:
ATCH 1 - Resolution
EX A - Council Budget Amendment No. 2P5
ATCH 2 - Project Location
NOTIFICATION:
None.