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} , <br /> Groundwater Analytical Results <br /> The chemical analytical results of groundwater samples obtained from monitor wells at the Site on <br /> October 24, 1994 are summarized in Table 2. Chemical analytical results indicate that no TPHg or <br /> BTEX constituents were detected at or above the laboratory method detection limits from the <br /> groundwater samples collected at the site during this quarter. This is consistent with analytical data <br /> obtained from the 3rd quarter sampling event. Attachment H contains photocopies of the laboratory <br /> analytical reports and chain-of-custody forms <br /> Wastewater Disposal <br /> Purge water generated from the groundwater monitor wells was disposed of on-site with approval <br /> from the San Joaquin County Public Health Services. <br /> SITE RF IEDIATION <br /> Soil Remediation System <br /> Soil vapor extraction has been selected as an effective technology to remediate the soil impacted with <br /> petroleum hydrocarbons at the site. The extracted soil vapor will be treated with an internal <br /> combustion engine equipped with a catalytic converter until hydrocarbon concentrations decrease to <br /> levels where granular activated carbon may be used. A workplan for the installation of the system <br /> was submitted to the County in September, 1994 and approved m October 1994. At this time permits <br /> and equipment for the installation of the remediation system are being procured It is anticipated that <br /> the installation of the soil remediation system will be completed during the first quarter of 1995 <br /> . This report presents our understanding of existing conditions at the subject Site. The conclusions <br /> contained herein are based on the analytical results and professional judgment which are in accordance <br /> with current standards of professional practice, no other warranty is expressed or implied SECOR <br /> assumes no liability for exploratory bonngs or data reported by other consultants or contractors <br /> Sincerely, <br /> SECOR International Incorporated p�► Nom► <br /> All NiLOW <br /> Suzanne M Baehr John E Bower, R G OF CAI.�FO� <br /> Staff Geologist Senior Geologist <br /> SMB/JEB jb <br /> Attachments <br /> cc Harland Knoll, San Joaquin County Public Health Services <br /> Elizabeth Thayer, California Regional Water Quality Control Board <br />• <br /> SECOR International, Inc Time Oil Company <br /> Manteca q I 2 <br /> 17 January 1995 <br />