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Quarterly ort - March 1998 <br /> • y Re P <br />' Curtiss Pontiac Buick <br /> 2450 Toste Road, Tracy, California <br />' 1.0 INTRODUCTION <br /> In accordance with a request from Mr Joe Toste, Advanced GeoEnvironmental, Inc , (AGE) has <br /> prepared this Quarterly Report for 2450 Toste Road in Tracy, California (the site) The scope of <br /> work included establishment of five soil borings, the completion of the borings as ground water <br /> monitoring wells and the collection and analysis of soil and ground water samples The location of <br /> the site with respect to its surroundings is illustrated in Figure 1 - Location Map Buildings and <br /> boring locations on the site are illustrated in Figure 2 - Site Plan <br /> Historical events and summaries of previous investigations on the site were presented in Preliminary <br /> Investigation and Evaluation Report(PIER), prepared by AGE and dated 15 August 1997 <br /> This report is prepared in accordance with San Joaquin County Public Health Services - <br /> Environmental Health Division (PHS-EHD) and Central Valley Regional Water Quality Control <br /> Board guidelines for the investigation of underground storage tank (UST) sites <br /> I2 0. PROCEDURES <br /> I21 MONITORING WELL INSTALLATION <br /> On 08 to 11 September 1997, soil borings B4, B5 and B6 were drilled and completed as ground <br /> water monitoring wells Boring B4 (MW-1) was established at the western edge of the station Z <br /> parking lot, boring B5 (MW-2) was a_d_v_ance the north end of the drive way entrance to the , <br /> parking lot and boring B6 (MW-3) was advanced at the east edge of the parking lot VD <br /> 2 1 1 DRILLING AND SOIL SAMPLING <br /> Installation of the monitoringwells <br /> was performed using atruck-mounted CME 75-HT drill ng <br /> equipped with continuous flight, 10-inch,hollow-stem augers The drill rig and two-man crew were <br /> supplied by Soils ENploration Services (SES) of Benicia, California <br /> Soil samples were collected from boring B4 and B5 as continuous cores using a split tube, 3-inch <br /> diameter core sampler The sampler was advance with the progression of the boring and soil samples <br /> were collected in clean, 2-inch by 6-inch brass sleeves Samples were collected from boring B6 at <br /> I five-foot intervals using a split tube sampler loaded with three clean 2-inch by 6-inch brass sleeves <br /> A 140-pound hammer was utilized to advance the sampler 18 inches, the number of blows required <br /> to advance the sampler over 6-inch increments was recorded on the boring logs All sampling <br /> Advanced GcoEw.ironmental Inc <br />