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r r <br /> Quarterly Report - June 1999 ; <br /> CHEROKEE TRUCK STOP <br /> 3535 East Cherokee Road, Stockton, California <br /> 1 0. INTRODUCTION t <br /> At the request of Mr Ellis Cecchini of Cecchim, Cecchini and Giovannoni, Advanced <br /> " GeoEnvironmental, Inc (AGE) has prepared this report for field work performed at 3535 East <br />' Cherokee Road, Stockton, California, during the second quarter of 1999 The scope of work this <br /> quarter was to advance four soil borings, to install one ground water monitoring well and to monitor <br />' the ground water well network on the site This report documents collection and analysis of soil and <br /> grab ground water samples and the results of ground water measurements <br />' The site setting is illustrated in Figure 1 Structures. monitoring well and soil boring locations are <br /> illustrated in Figure 2 The site history and a description of previous work performed at the site were <br /> detailed in Quai terly Report - Mai ch 1995 dated 11 May 1998, prepared by AGE Data froril <br />' previous ground water monitoring events are included in the tables of this report <br /> 20 PROCEDURES <br /> Four soil borings were advanced at the site between 08 and 10 June 1999 One ground water <br />' monitoring well was installed in an additional boring on 09 June 1999 Five ground water <br /> monitoring wells were purged and sampled on 17 June 1999 Field work was performed in <br /> I accordance with San Toaquin County Public Health Services- Environmental Health Dn ision (PHS- <br /> EHD) and Central Valley Regional Water Quality Control Board (CVRWQCB) guidelines for the <br /> investigation of underground storage tank (UST) saes Field procedures for the collection of soil <br /> samples, completion and dei elopment of wells and performance of ground water monitoring and <br /> sampling are described below <br /> , <br /> 21 DRILLING AND SAMPLING <br /> From 08 to I O'Tune 1999,'5 soil borings were advanced at the site Bol 3ngs B14 through B17 were <br /> drilled to a vertical depth of approximately 100 feet below surface grade (bsg), boring UST-6 was <br /> drilled to a vertical depth of 75 feet bsg All borings were advanced using a CME-75 drill rig <br /> Iequipped with 8-inch diameter hollow-stem augers The drill rigs and three-man crew\\ere supplied <br /> by Mitchell Drilling Environmental Corp (MDE) of Rancho Cordova, California Auger returns 41 <br /> I generated by drilling were stockpiled on-site approximately 300 feet northwest of the former USTs <br /> location Boring locations are shown on Figure 2 , <br /> A continuous core barrel was used to collect soil samples in boring B 16 between 50 and 80 feet bsg <br /> Atli anced GeoFni ironme ntal, Inc <br /> , r c <br />