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California Ronal Water Quality Antrol Board <br /> vCentral Valley Region `< <br /> Winston H.Hickox Sacramento Main Office Gray Davis <br /> Secretaryfor Intemet Address: hap://w .swcb.ca.gov/—mgcb5 Governor <br /> Environmental 3443 Routier Road,Suite A,Sacramento,California 95827-3003 <br /> Protection Phone(916)255-3000•FAX(916)255-3015 <br /> C' <br /> 21 December 2000 <br /> Ms. Anne Ogrey <br /> Holly Sugar Corporation <br /> 20500 Holly Drive <br /> Tracy, CA 95378 <br /> REVIEW OF SITE SUMMARY, HOLLY SUGAR CORPORATION, TRACY, SAN JOAQUIN <br /> COUNTY <br /> We have reviewed the 3 November 2000 AST Site Summary (letter)prepared by TriHydro Corporation <br /> (THC) on behalf of Spreckels Sugar Company(Spreckels), which is a division of the Holly Sugar <br /> Corporation (Holly). The letter provides a site status update for the aboveground tank spills at the Tracy <br /> plant. Previous investigations found soil contamination present at the former aboveground tanks (AGTs) <br /> in the former corn refinery and adjacent to the existing AGTs in the current aboveground tank area, <br /> where a fuel release occurred in 1990. <br /> Former Corn Refinery Area <br /> Prior to removal in 1985, the former corn refinery area had two 30,000-gallon diesel and No. 6 Fuel oil <br /> AGTs. The letter states that significant concentrations of total recoverable petroleum hydrocarbons <br /> (TRPH) are present in soil from the ground surface to the water table. The data show that TRPH <br /> concentrations in soil ranged from 15 mg/kg(HA-1) to 160,000 mg/kg (HA-2). One grab groundwater <br /> sample collected from the site did not have detectable concentrations of TRPH above a detection limit <br /> (1 mg/1). According to the November letter, Holly proposed to perform leachability testing of soil; <br /> however, this has not yet occurred. <br /> AGT Area <br /> The AGT area has one 420,000-gallon AGT, which stores No. 6 Fuel Oil. A November 1990 accident <br /> caused the release of approximately 500 to 800 gallons of fuel oil from the tank valve. During <br /> investigations at the site, Holly collected soil samples and one grab groundwater sample for TRPH <br /> analysis. The results show that TRPH concentrations in soil range from 240 mg/kg(HA-8)to <br /> 7,300 mg/kg(HA-7). Holly collected one groundwater sample west of the AGT,which did not contain <br /> detectable concentrations of TRPH above the detection limit (1 mg/1). <br /> California Environmental Protection Agency <br /> �d Recycled Paper <br />