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Quarterly Report - First Quarter 2004 <br /> • Former MEL BOKIDES PETROLEUM- MANTECA <br /> 1 983 Moffat Boulevard, Manteca, California <br /> ' 1.0 INTRODUCTION <br /> At the request of Mr Nick Bokides of Mel Bokldes Petroleum,Advanced GeoEnvironmental, Inc <br /> ' (AGE),has prepared this quarterly report for 983 Moffat Boulevard,Manteca,California(the site) <br /> The location of the site and the surrounding area are Illustrated on Figure 1, structures, former UST <br /> locations, and soil boring and monitoring well locations are Illustrated on Figure 2 <br /> ' round water monitoring is being conducted at the site as required b the Central Valley Regional <br /> G g g q Y <br /> Water Quality Control Board (CVRWQCB) This report presents the results of ground water <br /> ' monitoring activities conducted during February 2004, and has been prepared in accordance with <br /> guidelines issued bythe Regional Water Quality Control Board(RWQCB) Tri-Regional Board Staff <br /> ' Recommendations for Preliminary Investigations and Evaluation of Underground Tank Sites dated <br /> 10 August 1990 <br /> ' Background information and results of prior investigations at the site are in AGE's Preliminary <br /> Investigation and Evaluation Report(PIER), dated 09 March 1999, and Additional Site Assessment <br /> Report, dated 21 March 2001 Ground water data from previous quarterly monitoring events are <br /> included in the tables of this report <br /> 2.0: PROCEDURES <br /> On 13 February 2004, ground water monitoring for the first quarter of 2004 was performed at the <br /> ' site The ground water monitoring activities included measurement of ground water levels and the <br /> collection of groundwater samples from site monitoring wells MW-1 through MW-8 Groundwater <br /> monitoring procedures for the site were outlined in Additional Site Assessment and Ground Water <br /> ' Extraction Pilot Test Work Plan, dated 31 May 2000, and conform to ground water monitoring <br /> guidelines issued by the San Joaquin County Environmental Health Department (EHD) <br /> ' <br /> 2 1 GROUND WATER DEPTH MEASUREMENT AND PURGING <br /> ' During the February monitoring event,the depth to ground water was measured at each of the above <br /> noted wells from the top of the well casing to the nearest 0 01-foot utilizing a Solmst water level <br /> ' meter. Ground water elevation in each well at the site was calculated by subtracting the measured <br /> depth to ground water from the surveyed well casing elevation (Table 1) <br /> ' After the depth-to-ground water measurements were collected, the wells were purged using a <br /> disposable, dedicated plastic-bailer Approximately 5 5 to 6 gallons of water were removed from <br /> monitoring wells MW-1 through MW-8, a minimum of three casing-water volumes per well } <br /> ' Advanced GeoEnvironmental,Inc <br />