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S Quarterly Report - Third Quarter 2000 <br /> Former Mel Bokides Petroleum - Manteca <br /> 983 Moffat Boulevard, Manteca, California f' <br /> 01 <br /> ' 1.0. INTRODUCTION <br /> In accordance with the request of Mr. Nick Bokides of Mel Bokides Petroleum, Advanced <br /> GeoEnvironmental, Inc., (AGE)has prepared this quarterly report for the site located at 983 Moffat <br /> Boulevard,.Manteca, California (site). <br /> The scope of work was to monitor and sample ground water at the site to assess the lateral extent <br /> of petroleum hydrocarbon impact to the ground water.The location of the site is illustrated on Figure <br /> ' I. A plan of the site is illustrated on Figure 2. <br /> Background information and results of prior investigations at the site were included in an AGE <br /> ' document titled Preliminary Investigation and Evaluation Report(PIER) dated 09 March 1999 and <br /> subsequent quarterly monitoring reports.Quarterly monitoring data from January 2000 to the present <br /> is summarized in Tables I through 3 in this report. <br /> All field work procedures and reporting requirements are in accordance with guidelines established <br /> .by the Central Valley Region of the Regional Water Quality Control Board (CV-RWQCB) and by <br /> ithe San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD) for <br /> subsurface investigation of underground storage tank (UST) system sites. <br /> 1 2.0. PROCEDURES <br /> ' 2.1. GROUNDWATER DEPTH MEASUREMENT AND PURGING <br /> On 23 August 2000, a Solinst water level meter was used to measure the depth to ground water in <br /> ' each well relative to the top of the well casing. After ground water depth measurements were <br /> collected, monitoring wells were purged using a pre-cleaned, two-stage submersible pump. <br /> ' Nine gallons of water(a minimum of 3 well-volumes)was evacuated from well MW-I and six gallons <br /> of water (3 well-volumes) were evacuated from well MW-2, MW-3 and MW-4. Temperature, pH <br /> ' and conductivity of the purged water were measured at regular purge-volume intervals in all wells. <br /> The field data was measured with an ICM model 52200 water analyzer. Logs of the field data are <br /> included in Appendix A. Purged water was stored on-site in labeled 55-gallon drums. <br /> 2.2. COLLECTION AND ANALYSIS OF GROUND WATER SAMPLES <br /> ' Ground water samples were collected from each well using a new disposable plastic bailer. Each <br /> water sample was transferred into three 40-m1 EPA-approved VOA vials containing 0.5 ml 18%HCl <br /> 1 Advanced GeoEnviron mental,Inc. <br /> 1 <br />