SITE INFORMATION AND CORRESPONDENCE

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CLEANUP AND ABATEMENT ORDER R5-2011- 3 VALLEY PACIFIC PETROLEUM SERVICES INC. 930 VICTOR ROAD, LODI, SAN JOAQUIN COUNTY 8. According to the Board's files, based on the lack of evidence that contamination at the Site originated from the USTs, the SJEHD transferred regulatory oversight to the Board in June 1991. In 23 December 1993 SJCEHD told Woolsey that "no further action" ("NFA") was required to address the USTs since there was no evidence that a discharge had occurred. 9. Board staff entered into a Cost Recovery agreement with Woolsey for regulatory oversight of the Site on 14 January 1994. On 13 April 1994, Woolsey filed a report, which reported three quarts of diesel spilled while unloading a.delivery into the ALTs and that the AGT loading area ground surface "had been saturated with diesel for iii... years". A 28 April 1994 cover sheet for a Spill Prevention`Control and Countermeasures Plan ("SPCC") identified the Site as Woolsey dba Roberts-Petroleum Services and the property owner as William S. Roberts. l 10. In May 1994, Woolsey collected a LPH samplefrom MW-8 and submitted the sample for fingerprinting. The results indicated that LPH in'this well consists of a mixture of gasoline, diesel, kerosene, and lubricant oils 11. During a July 1994 Site visit, Board staff told the.Woolsey Site manager that his staff should bail LPH daily from MW-8 which at that tbe;Was two-to-three gallons of LPH each day. The purpose of the SitdVisJt was to find Monitoring wells MW-1 and MW-2 that could not be located at the Site despite.being shown on a map. The wells were not located during the Site visit. Staff instructed 1Noolsey to provide an explanation for the lost wells by August 1994. Woolsey staff repflrted that the"MW-1 and MW-2 were located in September 1:994. 12. On 27 September 1994 Woolsey installetl MW-9 south (downgradient) of the dispensers, and monitored MW-1 through.,...MW-8. Woolsey did not detect petroleum hydrocarbons in soil samples fromthe bonng.ddlled,,for MV".. until just above the groundwater table. r„ Woolsey detected 480 milligrams per ktlo�ram ("mg/kg") of TPHg, TPHd was ND, and BTEX;;concentrations"ranged from 2.710:20 mg/kg. Woolsey reported observing fuel odors"'and a sheen on groundwater during the MW-9 boring advancement. Woolsey submitted an LPH sample from MW-9 for fingerprinting. The results indicated that the LPH"sample consisted of a 41 1;; ratio of gasoline to diesel. At the time of the well installation, Woolsey observed LPH in MW-8. Wells MW-1 through MW-7 were dry. 13. A storage statement for January 1995 states there are five 12,000 gallon single-walled diesel storage. GTs arnd one 1,000 gallon single-walled kerosene AGT on the Site. The tanks were installed around 1950. No mention is made of a 275-gallon tank. 14. According to a cover sheet for monitoring well data collected on 6 February 1995, Woolsey estimated groundwater flow is to the southeast at a gradient of 0.055 foot per foot, and measured LPH thicknesses of 0.02 and 0.68 foot in monitoring wells MW-1 and MW-8, respectively. Woolsey's environmental consultant, Ground Zero, also observed LPH in MW-8 during July 1995. Woolsey had to delay additional investigation while they negotiated offsite access agreements with nearby property owners.