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ROL BOARD <br /> CENTRAL MLLEY REGIMA! WATER QUALITY C Iv i <br /> INSPECTION REPORT <br /> DISCHARGER : BEAVER CHEMICAL COMPANY 8 December 1989 <br /> LOCATION & COUNTY : STOCKTON, SAN JOAQUIN COUNTY <br /> CONTACT( S ) : JIM HEAVILAND, DIRECTOR OF OPERATIONS <br /> INSPECTION DATE : 20 SEPTEMBER 1989 <br /> INSPECTED BY : ROBERT A. EVANS <br /> ACCOMPANIED BY : JOEL ROSENOW, QUALITY ASSURANCE MANAGER <br /> FACILITY DESCRIPTION: <br /> Beaver Chemical Company, located in east Stockton, CA, manufactures industrial , <br /> laundry, janitorial , and dairy chemicals. Beaver Chemical processes chemical <br /> orders by mixing the various types powder and liquid chemicals in batches. The <br /> mixture is packaged and shipped as the final product. Wastewater generated from <br /> chemical processing and clean up operations flows by gravity into a collection <br /> sump. Wastewater is pumped from the sump to a one acre clay lined evaporation <br /> pond via 307 foot long three inch Dolyvinyl chloride pipe under Shaw Road. Mixing <br /> and aeration of the pond wastewater is provided pumping water from the bottom <br /> of the pond through 12 spray nozzles. <br /> Beaver Chemical receives its 6055 gpd water supply from California Water Service. <br /> Approximately 5750 gpd is used consumptively to manufacture the chemicals. The <br /> remaining 305 gpd of process wastewater is sent to the ponds. Domestic <br /> wastewater is treated on site by a septic system and disposed by Star Sewer <br /> Service. Surface water drainage is contained on site and sent to the ponds. <br /> Beaver Chemical 's discharge to land is currently regulated by Waste Discharge <br /> Requirements Order No. 79-96, which are no longer consistent with the Boards <br /> plans and policies, need to be updated. <br /> OBSERVATIONS AND COMMENTS: <br /> On 20 September 1989, I conducted a inspection of Beaver Chemical Company (BCC) <br /> in Stockton, California. The purpose of the inspection was to determine the <br /> following: <br /> 1) the information required to update BCC Waste Discharge Requirements (WDRs) , <br /> 2) the potential water quality impacts of their wastewater discharge to the <br /> clay lined evaporation pond, and <br /> 3) the necessity for BCC to develop and implement a ground water monitoring <br /> program. <br /> IREVIEWED BY: <br />