APPROPRIATION REQUEST FOR CIP 99-305 INSTALLATION OF CDS CLARIFIER UNITS AND

CIP 99-306 INSTALLATION OF CATCH BASIN INSERTS

 

Recommendation

Staff recommends that City Council:

Background:

The Clean Water Act requires that Cities reduce the amount of pollutants in storm water runoff to the maximum extent practicable. To achieve this goal, the California Regional Water Quality Control Board has issued an NPDES permit requiring cities to implement Best Management Practices (BMP’s) to improve the quality of storm water runoff. The majority of the required BMP’s result in an extensive amount of paperwork being generated with little measurable results. Staff discovered this opportunity to apply for funding for structural BMP so that the result will be more beneficial to the receiving water (ocean) and the community as a whole. Therefore, on November 24, 1998, the City Council authorized the application for Grant Funds from the Los Angeles County Regional Park and Open Space District, "The 1996 Proposition", a Santa Monica Bay competitive Grant Program.

 

On November 24, 1998, the City Council also approved the estimated expenditure of $52,000 for the CDS Unit and $19,500 for the Catch Basin Inserts. These amounts were estimated to be 15% of the matching amount as required under Prop A.

 

On July 21, 1999 the District approved both applications and the City of Hermosa Beach was granted $367,761 to serve as a Reimbursement Fund for the installation of one CDS Clarifier Unit at the 16 ^th Street Storm Drain out-fall at the beach. This amount is 85% of the total installation cost, including design, and the other 15% ($64,899) in matching funds is an obligation of the City. The City was also granted $56,250 to serve as a Reimbursement Fund for the installation of the Catch Basin Inserts. Of this amount, the City will be obligated to match 15% of the total cost, or $8,438.

 

The applications for the CDS Unit and Catch Basin Inserts were filled out jointly with the cities of Palos Verdes and Manhattan Beach.

The City of Hermosa Beach will be in charge of administration and disbursement of the fund for the installation of the Catch Basin Inserts and the City of Manhattan Beach will administer the CDS Clarifier Unit installation.

Analysis:

 

The 16th Street storm drain carries storm water runoff from a large portion of Hermosa Beach.

This storm drain carries trash and other pollutants to the beach and the ocean. Installation of the continuous deflection screened clarifier at the outlet of the 16 ^th Street storm drain will reduce sediment and organic pollutants, such as oil and grease, at the second largest storm drain in the City

Small treatment systems, or catch basin inserts, which are a combination of screens and filters, will be installed into existing catch basins to remove trash and sediment from construction sites and organic pollutants, such as oil and grease from leaking automobiles. In addition to reducing the amount of pollution reaching the beaches and the ocean, the reduction in the amount of trash and litter will help meet the TMDL’s (total maximum daily limits), which the Regional Water Board will be adopting in the near future.

Fiscal Impact:

The overall cost of the clarifier program is $432,660. Proposition A funds will cover $367,761. The City’s contribution will be $64,899.

 

The overall cost of the insert program is $64,688. Proposition A funds will cover $56,250. The City’s contribution will be $8,438.

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