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ALL PURE CHEMICAL COMPANY TRACY PLANT CHRONOLOGY 17 July 84 Complaint from San Joaquin Local Health District of chemicals being dumped into ponds at All Pure. 1 May 85 Board staff inspected All Pure Chemical Company (All Pure) facility and observed two wastewater ponds in series and one stormwater pond. Water samples taken from wastewater and stormwater ponds. The wastewater pond contained 14,000 mg/l chloride and 33,000 mg/1 total dissolved solids (TDS). The stormwater pond contained 2,800 mg/1 chloride and 9,200 mg/l TDS. No samples were analyzed for volatile organic compounds (VOCs). 22 May 85 Board letter requesting All Pure to file a Report of Waste Discharge (RWD). 7 Aug 85 RAID submitted. This RWD contained analytical data from the supply well at the facility. Chloride and TDS were detected at 100 mg/l and 1,000 mg/l, respectively. No samples were analyzed for VOCs. 9 Aug 85 Board letter responding to the RWD, stating that Board staff would review the report and determine whether waste discharge requirements (WDRs)would be needed for the facility. 28 Jan 88 Board staff inspected All Pure facility and observed four wastewater disposal ponds. A water sample from wastewater Pond 1 contained 120 ppb chloroform, 7.5 ppb carbon tetrachloride, 76 ppb bromodichloromethane, 88 ppb dibromochloromethane, and 32 ppb bromoform. Water from Pond 2 contained 120 ppb chloroform, 4.3 ppb carbon tetrachloride, 43 ppb bromodichloromethane, 63 ppb dibromochloromethane, 42 ppb bromoform, 5.7 ppb 1,1,1-trichloroethane (TCA), 1.0 ppb 1,1,2-TCA, 3.4 ppb chlorobenzene, and 6.5 ppb 1,3-dichlorobenzene. Sulfur dioxide was being used in the ponds to reduce the chlorine content. The maintenance supervisor informed Board staff that the ponds were to be replaced with a tank by the end of 1988. Staff recommended ground water monitoring be required at the facility. 8 .Tun 88 Board staff inspected All Pure Facility to inspect the plant and the wastewater ponds, to inform All Pure about requirements and the necessity of a ground water monitoring program, and to gather information for formulation of WDRs. 15 Sep 88 All Pure submitted a copy of A Proposal to Treat and Recycle Facility Wastewater at All Pure Chemical Company, for its Marysville facility. All Pure suggested using the same proposal at the Tracy facility if it was feasible and implemented at the Marysville facility.