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l <br /> ATEC Environmental <br /> VV Consultants <br /> Division of ATEC Associates,Inc. Solid&Hazardous Waste Site Assessments <br /> emedial Design&Construction <br /> 9719 Lincoln Village Drive,Suite 501 <br /> Sacramento, California 95827 Y;t4TJYZjnderground Tank Management <br /> (916)364-8781 FAX(916)364-1966 sbestos Surveys&Analysis <br /> ydrogeologic Investigations& Monitoring <br /> Analytical Testing/Chemistry <br /> November 3, 1992 NOV 0 6 1992 Industrial Hygiene/Hazard Communication <br /> Environmental Audits&Permitting <br /> ENVIRONMENTAL HEALTH Exploratory Drilling&Monitoring Wells <br /> Mr. Michael J. Infurna, Jr., R.E.H.S. PERMIT/SERVICES <br /> San Joaquin County <br /> Public Health Services <br /> Environmental Health Division <br /> 445 N. San Joaquin Street <br /> Stockton, CA 95201 <br /> RE: PHASE H SITE ASSESSMENT <br /> MANTECA BUSIlVFSS CENTER <br /> 415 NORTH MAIN STREET <br /> MANTECA, CALIFORNIA <br /> ATEC Job No. 59-07-92-00039 <br /> Dear Mr. Infurna: <br /> ATEC Environmental Consultants (ATEC) is pleased to submit this workplan for completing a <br /> limited Phase II Site Assessment of the above referenced site (Figure 1). As shown on Figure <br /> 2, the site is mostly occupied by an office complex with parking adjacent to the building. The <br /> proposed investigation will be limited to the subsurface conditions beneath the asphalted parking <br /> area. <br /> The Phase II investigation involves a Task 1 consisting of preparing and submitting this <br /> workplan to San Joaquin County Public Health Service (SJCPHS) for approval, performing <br /> approximately 4 soil borings and HydroPunch II groundwater sampling points using a mobile <br /> drill rig. The purpose of this work is to assess the presence of hydrocarbon affected soil and <br /> groundwater. The sampling will consist of collecting soil and groundwater samples at the <br /> designated sampling points, preserving selected samples and transporting them to a California <br /> certified analytical laboratory for analysis. ATEC will then compile the acquired data into a <br /> preliminary contamination assessment report. This report will include a presentation of the data, <br /> a site map depicting the sampling locations and site facilities, and a discussion with conclusions <br /> and recommendations for further work, if needed. A copy of this report will be submitted to <br /> SJCPHS. <br /> DETAILED SCOPE OF WORK <br /> Task 1 Work Plan Preparation: <br /> 1.1 Prepare a workplan for submittal to SJCPHS. The workplan will describe the <br /> investigation methods proposed for this project. Once approval is granted, the <br /> site investigative field work can be scheduled. <br /> A Subsidiary of American Testing and Engineering Corporation Consulting Environmental. Geotechnical and <br /> Offices in Major U.S. Cities/Since 1958 Materials Engineers <br />