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rterl Report-First uarter 2004, ! <br /> ,. . -Q .uaY .: Q ., <br /> ' WELDON CHURCH PROPERTY <br /> 104 West-Beverly Place; Tracy, California <br /> INTRODUCTION ; <br /> �.At.the request,of Mr. Weldon Church,-Advanced GeoEnvironmental, Inc.,(AGE)has prepared this y <br /> 'quarterly ground water monitoring'report"for the "'C <br /> site at 104 West Beverly Place, Tracy,"Call <br /> (the,site). The scope of work included the monitoring and sampling of eight wells and preparation <br /> of this report.'The site location is illustrated on Figure 1. Locations of structures, borings and ` <br /> monitoring,wells related to the site are illustrated,on Figure 2. Site backgrotind:information is '. <br /> ' -provided in Appendix A. i <br /> 2.0. ,PROCEDURES <br /> r <br /> The March 2004 monitoring event was performed in accordance with Central ValleyRegiohal Water <br /> Quality Control Board (CVRWQCB) and San Joaquin County Environmental Health-Department , <br /> (EHD)guidelines for investigation ofunderground storage tank(US,T)'sites and for sampling ground <br /> water monitoring wells, respectively. ' <br />'• 2.1 WELL MONITORING AND EVACUATION <br />' On 25,March 2004, a Solinst water level meter was used to measure the depth to ground water in. . <br /> ground water monitoring wells MW-1 through MW-7 relative to the-top of'the well casing. After <br /> ground water depth measurements were collected, each monitoring-well was purged using a"new . ' <br /> disposable plastic,bailer.,Between approximately 3.0 and 6.5 gallons of water.were evacuated from <br /> I each monitoring well; a minimum of three casing-water volumes per well. <br /> ITemperature,pH and conductivity were measured'at 1 to 3 gallon intervals,as appropriate,using an.. <br /> Oakton water,analyzer.to monitor stabilization of these ground water parameters.Field data:logs are <br /> included in Append1x B.•Purged water was temporarily stored on-site in 55-gallon DOT-approved <br />' storage drains pending proper disposal. <br /> I2:2: ,COLLECTION AND ANALYSIS.OF!GROUND WATER SAMPLES <br /> Water,,'samples were collected from monitoring wells MW'1•through MW 7 using-new disposable <br /> bailers. The samples were transferred into 40-m1 EPA-approved volatile organic analysis;(VOA) <br /> vials containing 0.5 ml 18%hydrochloric acid as a preservative:The sample.vials were then labeled <br /> with the monitoring well designation, date, time of sampling and the sampler's initials. <br /> Advanced.G6Environinental,Inc. <br />