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Stockton Meat Plant - Case Closure Page 5 March, 1996 conveying wastewater to the City of Stockton wastewater facility, coliform analysis was requested as part of the ground water background check In 5 of 7 sampling events, coliform was detected at or above the California and Federal drinking water standard ,t� �,• �� 1 Limited Phase II Environmental_Site Assessment (1995) In October, 1995, Krazen & Associates completed and reported on a property k transfer environmental site assessment The work is documented in a report € entitled Limited Phase II Environmental Site Assessment, dated October 16, 1995 The work was performed for real estate transaction due diligence and in response to potential concerns of environmental releases at the site, focusing on several issues, one of which was the former underground diesel storage I tanks To support the work, Krazen performed a Phase I audit of the facility, and in r the course of the historical check of the facility, determined that prior to ISafeway constructing the meat plant facility in 1972, the site was occupied by unspecified military activities Historical photographs (Attachment G) indicate what appears to be military housing Additionally, in Safeway's research on the historical use of the site, Safeway discovered a court judgment condemning the property in 1943 for use as military housing (a notation exists in the City of Stockton "OLD" drawings as "Condemned by USA for a war housing project by Court Order #4804, judgment rendered Nov 8th, 1943") Krazen was concerned with prior environmental damage from the military operations To quote from Page 2 of Krazen's report "Environmental concerns associated with this former occupant ' include underground tanks possibly located near service/utility structures which appear to have been situated in the north central and southeast portions of the site Tank contents could ' include refined petroleum products (gasoline, diesel, oil) or solvents (PCE, TCE, etc ) Releases from unknown point sources at the site are also a potential, as are historical impacts from off- site sources " Krazen collected several soil samples and nine Hydropunch II groundwater ' samples using direct push methods with a cone penetration testing rig The results of these tests are summarized on Figure 5 in Attachment G As indicated in Figure 5, trace concentrations of diesel in the groundwater are widespread throughout the site Although it is well known that Hydropunch samples provide only a relative indication of chemicals and compounds in groundwater, none-the-less, the results of the Krazen work report diesel concentrations in ground water in areas that could not possibly be impacted by the underground tank site In particular, the sample from KHP-9 is a good 1