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'� ^j,�u w� - 'St cr', »_ , ' .A . r' !i^ ,^, _ i .,cr i 1, ` Mo ism_.. ^'... cr+ a.., ,r<`r a • l fk <br /> •r d r _ N , � <br /> HT <br /> 1 i <br /> Quarterly Report '- First Quarter 2001 . <br /> �s. CHEROKEE,TRUCK STOP` <br /> 3535 East Cherokee Road, Stockton, California ! J J <br /> alive } <br /> 1.0. INTRODUCTION <br /> CI At the request of Mr Ellis Cecchmi of Cecchun, Cecchmi and Gnovannom, Advanced <br /> GeoEnvironmental, Inc (AGE) has prepared this report for field work performed at 3535 East <br /> Cherokee Road, Stockton,California,during the first quarter of 2001 The scope ofwork this quarter <br />' included monitoring the ground water well network} on the site and sampling the small and large- " <br /> domestic well This report documents collection and analysis of ground water samples and the results ' <br /> of ground water measurements <br /> The site setting"is,111ustrated in Figure 1 Structures, monitoring welland soil boring locations are <br /> F illustrated in Figures 2 an&,3 Background information was summarized in the Quarterly Report- <br /> ISeptember 1999, dated 29 December 1999, prepared by AGE <br /> Iy <br /> 2.0. PROCEDURES ' <br /> 1 C <br /> r <br /> Six ground water monitoring wells and two domestic wells were purged and sampled on 28 March <br />' 2001 The large and small domestic wells were'resampled on 25 April 2001 Field work was <br /> performed in accordance with the Central' Valley Regional Water Quality Control Board <br />' (CVRWQCB) and San Joaqum County Public Health Services - Environmental Health Division - <br /> (PHS-EHD) guidelines for the investigation of underground storage tank (UST) sites and sampling <br /> a ground water monitoring wells <br /> •, i i JA ! <br /> f <br /> 21 - WELL PURGE PROCEDURES <br /> ♦ 1 L t i x u L l 1,I <br /> On 28,March 2001,-a Soloist water level meter was used to measure the depth,to ground water <br />' relative,to the,tops of the well casings in six,monitoring wells in the area'of the former UST , <br /> locations and one well at 3400 Newton Road The ground water elevation in each well and ground ; <br /> water flow direction for the site were determined from the data collected (Table 1) ' <br /> ' After measuring'ground water depths, monitoring wells UST-1 through UST-6 were purged using <br /> a Grundfos submersible purge pump Approximately 100 gallons of water were purged from UST-1`, <br />' and approximately 10 to 14 gallons of water were removed from wells UST-2 through UST-6 (a r <br /> minimum of three standing casing-water volumes,per well) Ground water was purged from near the y <br />' top of the water,column to remove water trapped within the unscreened interval of the well casings Y <br /> Temperature,pH and conductivity of purged water were measured at regular intervals during pdrgmg <br /> • using a Hydac water analyzer The recorded field data andtlogs are included in Appendix A Purged ' <br />' water was stored on-site in 55-gallon DOT-approved drums pending laboratory analysis <br /> 1 Advanced GeoEnvironmental,Inc <br /> r ^, <br />