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'. Quarterly Report - January 1998 <br /> W.T. Jordan Property <br /> ' 298 West Grant Line Road <br /> Tracy, California <br /> ' 10. INTRODUCTION AND SCOPE OF WORK <br /> ' In accordance with a request from Mr William Jordan,Advanced GeoEnvironmental, Inc (AGE) <br /> has prepared this Quarterly Report for 298 West Grant Line Road,Tracy, California(the site) Field <br /> activities included ground water monitoring and collection and analysis of ground water samples, <br /> ' which was performed on 22 January 1998 Site history and findings from previous investigations and <br /> previous monitoring events at the site were summarized in the Quarterly Report dated 15 March <br /> 1996 prepared by AGE <br /> Figure I - Location Map depicts the site and its surrounding vicinity Figure 2 - Site Plan depicts <br /> ' significant structures and monitoring well locations on the site <br /> Monitoring and sampling procedures were performed in accordance with guidelines for investigation <br /> ' of underground storage tank(UST) sites established by both the San Joaquin County Public Health <br /> Services - Environmental Health Division (PHS-EHD) and the Central Valley Regional Water <br /> Quality Control Board (CVRWQCB) <br /> 2.0. PROCEDURES <br /> ' 2 1 MONITORING WELL PURGE PROCEDURES <br /> ' On 22 January 1998, the water level in each monitoring well was measured relative to the top the <br /> well casing using a Solinst water level meter The depths to ground water and relative ground water <br /> ' elevations are tabulated in Table I - Ground Water Elevation Data <br /> Only three monitoring wells, MW-4, MW-5 and MW-6 were purged and sampled After recording <br /> ' water level measurements, a two-stage submersible pump was used to purge the selected monitoring <br /> wells of standing water A minimum of three well volumes of water were removed from each purged <br /> well,eight gallons of water were removed from MW-5'and MW-6,and twelve gallons of water were <br /> ' removed from MW-4 Ground water parameters were not measured during this sampling event <br /> Purged water was stored on-site in labeled, 55-gallon DOT-approved drums <br /> ' 2 2 COLLECTION OF GROUND WATER SAMPLES <br /> ' Water samples were collected from each well using a new disposable plastic bailer Each water <br /> sample was transferred into two 40-mi VOA vials containing 0 5 ml of 18%hydrochloric acid as a <br /> t <br />