ARCHIVED REPORTS_XR0007454 CASE 1

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i ' h'q KL EI NFEI_ DER 3 BACKGROUND General Mills operates a food production facility at 2000 West Turner Road in Lodi, California ' The facility includes an office, fuel storage areas, silos, parking areas, etc , for food production purposes ' Kleinfelder reviewed documents and information provided by General Mills Based on that information, Kleinfelder understands the UST area discussed in this report is located south of the office and approximately 10 feet north of Buildings #85 and #86 (See Plate 1) Two USTs were ' onented north to south and situated side by side-on an approximate 30 foot by 30-foot reinforced concrete pad At one time the two 10,000-gallon USTs reportedly contained diesel, kerosene ' and/or JP-4 jet fuel According to a San Joaquin Local Health District (now PHS/EHD) Inspection report a single ' 10,000-gallon fiberglass UST was removed from the site The tank removed was shown as being the easternmost tank of two USTs located side by side and just north of a "new" building The bottom of the tank was at a depth of approximately 12 feet bgs and located on a large cement ' pad Therefore the two required bottom soil samples were taken at each end of the tank at the ends of the cement pad, at approximately 14 feet bgs Kleinfelder reviewed data reports from these two samples conducted by California Water Labs Inc , dated January 29, 1988 The two soil samples were analyzed for total petroleum hydrocarbons as referenced to gasoline (TPH-G) diesel (TPH-D), kerosene (TPH-K) and motor ioil (TPH-MO) and benzene, toluene and xylenes (BTX) The northernmost soil sample was none detected for the requested analyses at or above laboratory reporting limits TPH-K was the only analyte detected at 19 0 mg/kg from the soil sample collected from the southern end of tank Apparently the tank was removed due to an unauthorized release report prepared by county employee William R Snavely, dated January 14, 1988 This report indicated that a leak was ' discovered due to inventory discrepancy and that approximately 123 gallons of JP1 Fuel was involved Comments in this report stated the following "Mgr Discovered a discrepancy in ' inventory and called FIT Tank Service to check system Leak in filler pipe observed Stockton Service Station advised that the tank be removed Tank is being pumped out and to be empty 1112188" 1 The remaining UST is positioned on the western half of the pad, and as part of Kleinfelder's investigation, borings were to be advanced to assess the soil conditions as they pertain to possible soil contamination due to operations of the existing UST (western side of cement pad) prior to proposed abandonment in place ' 20-1417-16 E03/20118259 Page 3 of i 1 Copyright 2001, Kleinfelder Inc February 28 2001