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<br /> Quartefly
<br /> Monit6i ' brt!,�-Siiou Y
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<br /> FAST AND ASYMART
<br /> i"-771 . S1,
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<br /> 244 West Harding Way, St6ckton4,,Ca1iforA
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<br /> INTRODUCTION
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<br /> At the request:.of property owner Mn..Mik6,Ali,.Adi��n'cdd' GeoEnviromiiental"Inc..,
<br /> prepared the enclosed quarterly monitoring re
<br /> for h io'i)ertv located at 244 West H ' ding
<br /> port 6rt ep,
<br /> Stockton;,California,I w
<br /> Thescopeof. ' ork includedgrdiffid water monitoring and sampling, laborat,
<br /> sample,analysis, 'andthe preparation OT this-report. Site,background'information is inclue 'in
<br /> L,Appendi')CA-. The site and the'surrounding area are illustrated-on TI&6,J'". On'-site structures,,soil,
<br /> it rin '
<br /> 4 orings, and moni o g well.locatioris"are illustrated'on Figure 2.".
<br /> I- -j
<br /> 2.0. ' PROCEDURES, ,.';,r ° -
<br /> Field procedures were performed ina.ccordanc6 With Central Valley R:egion'al Water Quality Control
<br /> Board(CVRWQCB) guidelines f6r the investigat on Of undergrpuii.d ,s '90
<br /> storage U ST) sites and,
<br /> the San Joaquin-County Ehvironmental Health Department (EHD) guidelines sampling
<br /> i',I }.. water monitoring'wells.
<br /> '• 2.1. WELL-MONITORING AND EVACUATION
<br /> On 28 May 2004,the depth to ground water in all three monitoring wells was measured from the top
<br /> of eacK,well casing to the'nearest,0.0 1 46ot utilizing a Solinst Water level meter.. 'Ground water
<br /> elevation in each well was calculated by subtracting the measured depth to ground water from the
<br /> surveyed casing elevati6n(Table 1).
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<br /> After water levels were measured,approximately 8.5 to 9.0 gallons of watero' 3'
<br /> (a mininiiiiii .f casing
<br /> .water volunes per well)were purged from.monitoring wells MW-1 through MW-3 using dedicate,
<br /> dispo' sabl6l plastic bailers.Ground water feriiperaturc,pH,and conductMtywefe measured at regiilar
<br /> .,intervals during using an.Oakton W'aiter,analyzer. Field sheets and dita are-includ6d,in' ,"
<br /> g purging us T." 4
<br /> t in
<br /> .,,Appendix B. Purged.,water, was,'(stbred on-site properly labeled,' 55-gallo'n,'D6pehi &nt 'of,.,
<br /> Transportation (DQT)',approved drums 0 qnding di sp osal.
<br /> .2..2.- COLLECTION OF GROUND WATER SAMPLES
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<br /> -Groundwater sampleswerie collected.fr6m the monitoring wells using disposable plastic bailers;;
<br /> ane •use, thereby minimizing cross-contamination 4,
<br /> these bailers W�r'8 disposed of after o nafion-6640'
<br /> sampling devices:,Each ground,water'sarriple was-collected into three 4.0-milliliter (ml) volatile .
<br /> organic,analysis (VOA) vials containing 0:5-ml 18% hydrochloric acid,solution •as a,� s.ample
<br /> 'r. preservative.rvAtive. After collectio ,'fora y
<br /> se n, ih� 'satnples, were labeled and plac6d in, a,chi �Ile�dcontainer
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<br /> Advanced GeoEnvironrn
<br /> plital,Inc.
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