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J EXECUTIVE SUMMARY Chemical Data Management Systems obtained four samples of rinse water from Central Spring, Inc. in Stockton, CA. The samples were taken in order to have them analyzed to determine if the rinse water is a hazardous waste. The analysis results showed that the rinse water that Central Spring, Inc. generates onsite is not hazardous waste: BACKGROUND Central Spring manufactures truck suspension springs. The springs are pretreated with a zinc phosphate rinse. This process generates a waste stream. This wastewater is treated, with coagulants, flocculants and pH adjusted. The sludge is dewatered and sent offsite for disposal and the treated wastewater is discharged to the publicly owned treatment works under an NPDES permit. As required by California law, each generator is required to make a determination as to whether the waste they generate is or is not hazardous. Central Spring, Inc. has decided to base their determination on lab analysis. Based on generator knowledge, CDMS has determined that analysis does not need to be conducted for ignitability, or reactivity. Analyses were performed per 22 CCR §66261.24 for toxicity and per 22 CCR §66261.22 for corrosivity. SAMPLING AND ANALYSIS ACTIVITIES On January 18, 2010, Beverly Everhart of Chemical Data Management Systems took two samples at Central Spring, Inc. for metals screening and one sample for corrosivity screening. On February 2, 2010, Beverly Everhart collected one sample for an aquatic toxicity screening. Samples Metals 1, Metals 2, and Spring 3 were submitted to Test America of Pleasanton, CA. Sample HWD1, was submitted to Block Environmental of Concord, CA. Samples Metals 1 and Metals 2 were analyzed for CAM 17 metals using methods SW846 3050B and 6010B and sample Spring 3 for pH using method 9040B. Sample HWD1 was evaluated per test procedures approved by 22 CCR §66261.24(a)(6). Central Spring, Inc. Waste Determination/Analysis Report 3/5/10 Page 1