ARCHIVED REPORTS_XR0007549 - Laserfiche WebLink

Home Browse Search

Monitoring Well Installation and Quarterly Report - Fourth Quarter 2002 PLAZA LIQUORS II I2420 West Turner Road, Lodi, California 1.0. INTRODUCTION At the request of Mr Robert McCarty,Advanced GeoEnvironmental, Inc (AGE)has prepared this monitoring well installation and quarterly report for the property located at 2420 West Turner Road, Lodi, California The scope of work included the installation and development of four wells, performance of a quarterly ground water monitoring event and preparation of this report The site Iand the surrounding area are illustrated in Figure 1 On-site structures and monitoring well locations are illustrated on Figure 2 Site Background information is summarized in Appendix A I 2.0. PROCEDURES Field work was performed in accordance with guidelines established by the Central Valley Regional Water Quality Control Board (CVRWQCB) for the investigation of underground storage tanks (UST) sites i 2 1 MONITORING WELL INSTALLATION, DEVELOPMENT AND SURVEY Four ground water monitoring wells (MW5 through MW8) were installed on 30 September and 01 October 2002, developed on 04 October 2002 and surveyed on 21 November 2002 I2 1 1 Drilling and Sampling The four pilot borings for monitoring wells MW5 through MWS were advanced using a CME-75HT Idrill rig, equipped with 8 25-inch diameter hollow-stem augers The drill rig and three-man crew were supplied by Mitchell Drilling Environmental Auger returns generated by drilling were containerized in properly labeled DOT-approved model 17H 55-gallon drums and stored on-site Soil samples were collected ahead of the drill bit using a California modified split-spoon sampler loaded with three pre-cleaned 2-inch by 6-inch brass sleeves The samples were collected from monitoring well pilot borings MWS, MW6, MW7 and MW8 at five-foot intervals, beginning at 5 feet below surface grade (bsg) using a 140-pound hammer to advance the sampler The number of blows required to advance the sampler over each 6-inch increment of the 18-inch sampling interval was recorded on the boring logs Sampling equipment was washed in an Alconox solution and double rinsed with water prior to each sampling run to minimize cross-contamination IFor each sample,both ends of the leading or other selected sleeve were covered with Teflon sheets, • capped and sealed with tape The samples were properly labeled, stored on ice and transported under Advanced GeoEnvi ron mental,Inc