Laserfiche WebLink
Quarterly Report - Fourth Quarter 2002 <br />' Former PACIFIC AUTO CENTER <br /> 25355 North Highway 99, Acampo, California <br /> IX.O. INTRODUCTION <br />' At the request of Mr Pat Meeks of the former Pacific Auto Center,Advanced GeoEnvironmental, <br /> Inc (AGE) has prepared this quarterly report for the property located at 25355 N Highway 99, <br /> Acampo,Califorrna The scope ofwork mcluded quarterly groundwater monitoring and preparation <br />' of this report The Iocation of the site and the Immediately surrounding area are Illustrated on <br /> Figure 1 Structures and monitoring well locations are Illustrated on Figure 2 Background <br /> information is summarized in the AGE-prepared Prehminary Site Assessment Report,dated 07 April <br />' 1999 Data from previous ground water monitoring events is included in the tables of this report <br />' 2.0. PROCEDURES <br /> Field activities were performed in accordance with guidelines for the investigations of underground <br /> storage tank (UST) sites and the sampling of ground water monitoring wells as issued by the <br /> Regional Water Quality Control Board- Central Valley Region(CVRWQCB) and the San Joaquin <br />' • County Environmental Health Department (EHD), respectively <br /> I2 1 WELL MONITORING AND EVACUATION <br /> On 02 January 2003, a Solmst water level meter was used to measure the depth to ground water in <br />' the three wells relative to the tops of the well casings The ground water elevations and gradient were <br /> determined from this data (Table 1) <br />' After depth to ground water measurements, a minimum of three casing-water volumes was purged <br /> from each well using new disposable plastic bailers Approximately 2 0 to 5 0 gallons of water were <br /> removed from each well Ground water temperature,pH and conductivity were measured at regular <br />' intervals during the purge process using an Oak-ton water analyzer Field data sheets are included in <br /> Appendix A Purged water was stored on site in labeled, 55-gallon DOT-approved drums <br />' 22 <br /> COLLECTION AND ANALYSIS OF GROUND WATER SAMPLES <br />' A water sample was collected from each purged well using a new disposable plastic bailer Each <br /> water sample was transferred into laboratory-supplied 40-m1 VOA vials containing 0 5 ml 18% <br />' hydrochloric acid as a sample preservative After collection, the samples were properly labeled, <br /> placed in a chilled container and transported under chain-of-custody to McCampbell Analytical,Inc <br /> (MAI), a California Department of Health Services-certified analytical laboratory <br /> 1 <br /> Advanced GeoEnvironmental,Inc <br /> I <br />