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y <br /> ' Closure Summary.Report' November 1998 <br /> WELDON CHURCH PROPERTY, +I <br /> 104 West Beverly Place <br /> Tracy;California.. <br /> ly. <br /> -1.0. ;! )INTRODUCTION' <br /> �, _ . :it. .. • . ,. "; ,: . ,. _. - <br /> At the requ:est of.Mr. Weldon Church,Advanced GeoEnvironmental, Inc. (AGE)ihas prepared this <br /> . Quarterl`Report far,the'site at"104Wes;,Beverly Place,,Tracy,.-California,(the site).-The scope of <br /> work included monitoring and sampling eight,wells, obtaining laboratory analyses of the samples.' ' <br /> and preparation of this report. The site setting is illustrated on Figure .1 Location.Map. Locations <br /> I' of structures;borings and'monitoring wells related to.ihe'site are illustrated on Figure 2- Site Plan. <br /> Site history and fmdings.from.previous Investigations and'previous monitoring'events at°the site are . <br /> detailed in the Preliminary Investigation andEvaluation,;Report.-.September 1996 (PIER) prepared <br /> 6y'AGE. Thesei details were reviewed for the proposed recommendations listed in this CSR <br /> '2A:= PROCEDURES ; <br /> The work was performed in' accoidance with'-San Joaquin County Public Health.Services - <br /> Environmenial Health'Division(PHS-EHD)-and-central valley"Regional Water Quality Control <br /> Board guidelines.for investigation of underground storage tank (UST) sites. <br /> 2.1. MONITORING WELL PURGE PROCEDURES <br />' On 24 Novemlier 1948, a Solinst water'level.meter, was•U. to measure the deptfi•to•ground water <br /> in'each well relative"to the tops of the well-casings..After ground water:depth measurements were , <br /> collected, each monitoring %yell was purged using a'two-stage submersible:pump. Approximately. <br /> -8 gallons of water were'evacuated from`each monitoring,we11(a•minimum three well casing <br /> volumes), as appropriate for each"well. <br />' Temperature;'pH and conductivity of purged ground water were measured at 1-gallon nr 2-gallon <br /> intervals, as appropriate.for,eacli well•;using ah-ICM iriodel 52200 watei'analyzer.'Field data fogs <br /> are included in Appendix A Purged water was.temporarily stored on'-site in 55-'gallon drums. <br /> COLLECTION ANDANALYSIS OF GROUND WATER SAMPLES <br /> Water samples were'collected'fromi each'monitoring"well using new disposable bailers.;The sarriples " <br /> were transferred into 40-m1 EPA-approved vials containing 0.5,ml of 18% hydrochloric acid as, . ,. . a <br /> preservative. The;sain le vialswere.then labeled with�the monitoring. nation, datetime ' <br /> of samplin' and the sampler's'initials._ The samples were transported in a'chilled container under <br /> Advanced Gcoknvironmental,Inc. 1 <br />