ARCHIVED REPORTS_XR0001966 - Laserfiche WebLink

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Date May 17, 1996 ARCO QUARTERLY GROUNDWATER MONITORING REPORT Facility No 00548 Address 1612 Hammer Lane, Stockton, California ARCO Environmental Engineer Kyle Christie Consulting Go/Contact Person EMCON/Jay R Johnson Consultant Project No 20805-140 005 Primary Agency/Regulatory ID No Mary Meays, San Joaquin County Public Health Services WORKED PERFORMED THIS QUARTER (First- 1996) 1 Performed quarterly groundwater sampling 2 Compiled and evaluated groundwater monitoring data 3 On January 31, 1996, EMCON prepared and submitted a second access agreement to the property owner south of the site (Lincoln Properties) WORKED PROPOSED FOR NEXT QUARTER (Second- 1996) 1 ARCO will continue to perform quarterly groundwater monitoring The next sampling event is tentatively scheduled for May 1996 Current Phase of Project Monitoring/Assessment Frequency of Groundwater Sampling Quarterly Frequency of Groundwater Monitoring Quarter) Is Free Product (FP) Present On Site No FP Recovered this Quarter None Cumulative FP Recovered to Date None Approximate Depth to Groundwater 57 00 to 63 80 Groundwater Gradient East 0 003 DISCUSSION (optional) Results of this monitoring event indicated that levels of dissolved gasoline hydrocarbons are consistent with levels detected during previous sampling events Groundwater gradient is consistent with previous sampling events Groundwater elevation increased approximately 1 96 feet from the previous sampling event (December 1995) ATTACHMENTS • Table 1 Groundwater Monitoring Data • Figure 1 Site Vicinity Map • Figure 2 Generalized Site Plan • Figure 3 Groundwater Contour Map (February 2, 1996) . • Appendix A Sampling and Analysis Procedures • Appendix B Laboratory Analysis Reports and Chain-of-Custody Records cc Elizabeth Thayer, RWQCB SACW V'JM805\08051400 5AS 95\cjb L