ARCHIVED REPORTS XR0001708 - Laserfiche WebLink

Home Browse Search

wN, 1; Quarterly Report - September 1998 . Geweke Land Development& Marketing 16 South Cherokee Lane, Lodi, California 1.0. INTRODUCTION AND SCOPE OF WORK At the request of Geweke Land Development & Marketing (GLDM), and in accordance with Cleanup and Abatement Order No. 93-701,Advanced GeoEnvironmental, Inc..(AGE) has prepared this report of monitoring and remediation field activities performed at 16 South Cherokee Lane, Lodi, California during the third quarter of 1998. The site and its surroundings are illustrated on Figure 1 - Vicinity Map. Structures and well locations related to the site are shown on Figure 2 -Site Plan. The scope of work covered by this report was to collect and evaluate field data, to summarize the progress of the in-situ bioremediation project, and to document monitoring activities at the site during the third quarter of 1998. Results of previous investigations are detailed in the Problem Assessment Report(PAR)and the Quarterly Report-March 1996 Analytical results from previous monitoring events are included in Tables 4, 6 and 7 of this report. 2.0. PROCEDURES • Quarterly ground water monitoring was performed on 10 September 1998 in accordance with the Recommended Groundwater Sampling Guidelines established by the San Joaquin County Public Health Services - Environmental Health Division (PHS-EHD). The addition of hydrogen peroxide to wells was performed on 15 September 1998. At the request of the CVRWQCB, updated cross sections were prepared illustrating the site stratigraphy. 2.1. MONITORING WELL PURGE PROCEDURES On 10 September 1998, a SoIinst water level meter was used to measure the depth to ground water in each monitoring well and vadose wells VW-I through VW-5 relative to the tops of the well casings (Table 2). Monitoring wells MW-6, MW-7, MW-8, MW-9, MW-11, MW-12 and MW-14 were then purged using a 2-inch diameter submersible pump. A minimum of three well volumes of water was removed from each well. Temperature, pH and conductivity of the purge water were measured at regular intervals using an ICM water analyzer and were recorded on field logs. The percent dissolved oxygen was measured in the final purged water of each well. Field data and work sheets are included in Appendix A. The purged water was placed in DOT-approved drums and stored on-site. • Advanced GeoEnvironmental,Inc.