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All organic compund analytical results were reported telow laboratory detection limits. All <br /> CAM 17 metal analyses were reported to be either non detect or below California state action <br /> levels. All analyses for lead and Chrome VI were reported below analytical laboratory detection <br /> limits. Analytical laboratory reports are attached to this report. <br /> The analytical results of the sample HH-SB2-20.5 was reviewed by this office on March 29, 2001 <br /> and a telephonic request was:made o KiffIAnWiical Mbor"ato es, LLC.to analyz'�oil saamples-V <br /> HH-&B2115:5 andiHH�SB2=25:5 using Tesi-Methods 260B�$0-f5(m)'sb,ihs.#This request-was <br /> logged into the laboratory but they failed to perform th tests_ .onto hold.time expinng.on the <br /> samples. <br /> Conclusions <br /> The information obtained from the cuttings and soil samples collected from the soil boring is <br /> summarized as follows: (1) lithologies present below the former tank site is comprised primarily j <br /> of fine to coarse-grained sand and silt; (2) lithology confirms with previous described geologic <br /> units for the Lodi area for the upper 40 feet of the subsurface; and (3) no evidence of vertical <br /> migration of petroleum hydrocarbons were found to be present below 7.5 feet below ground <br /> surface. No MTBE was found to be present at the site. <br /> San Joaquin County Public Works Department prepared a groundwater surface elevation map in j <br /> 1998 that depicted the depth to top of groundwater surf ce at approximately -10 feet mean sea <br /> level. The ground surface elevation at the site is approx'mately 50 feet above mean sea level. At <br /> least 45 feet of uncontaminated soil remains below the former UST site and the top of the <br /> groundwater table. <br /> We recommend this site for closure based on the fact that no petroleum hydrocarbons were found <br /> in the subsurface below the former UST location. <br /> Please contact me if you have any questions at (209) 369-9421. Thank you for your assistance on <br /> this project. <br /> Sincerely, <br /> Stephen G. Muir <br /> Certified Engineering Geologist#1224 ����� <br /> w <br /> Expiration Date: 08130102 ''" <br /> 5 <br />