ARCHIVED REPORTS_XR0007556 - Laserfiche WebLink

Home Browse Search

T l Date February 3,2004 Quarter: 4'h Quarter,2003 ARCO QUARTERLY GROUNDWATER MONITORING REPORT Facility No 02093 Address _3425 Tracy Blvd , Tracy, California ARCO Environmental Engineer _Paul Supple Consulting Co/Contact Person URS/Vernon Elarth Consultant Project No 38466457 OL058 Primary Agency/Regulatory ID No San Joaquin County Environmental Health Department _(SJCEHD) _ Assembly Bill 681 Status _Property owned by Atlantic Richfield Company WORK PERFORMED THIS QUARTER (Fourth 2003): 1 Performed quarterly groundwater monitoring and sampling 2 Prepared and subrmtted quarterly groundwater monitoring report 3 Performed operation and maintenance on AS systems WORK PROPOSED FOR NEXT QUARTER (First 2004): 1 Perform quarterly groundwater monitoring and sampling 2 Prepare and submit quarterly groundwater monitoring report 3 Perform operation and maintenance on AS system 4 Destroy well TEX-1 QUARTERLY RESULTS SUMMARY (Fourth 2003): Current Phase of Project Monitoring/Remediation Frequency of Groundwater Sampling ATR-2,ATR-4, ATR-5, ATR-7, ATR-8, and ATR-12 sampled quarterly, ATR-1, ATR-3, ATR-6,ATR-9, ATR-10, and ATR-11 sampled 1" and 3`d quarters only TEX-1 sampled 3`d quarter only Frequency of Groundwater Monitoring Quarterly Is Free Product (FP) Present on Site No FP Recovered this Quarter None Cumulative FP Recovered to Date <1 gallon Current Remediation Techniques Air Sparging (SVE system currently off) TPHG removed by SVE this Quarter None Cumulative TPHG Removed 3,616 6 lbs Approximate Depth to Groundwater 8 78 to12 98 ft Groundwater Flow and Gradient Northeast to Southeast at 0 002 ft/ft ANALYTICAL DATA REVIEW: Based on the review of the electronic and hardcopy data (chain-of-custody records, blanks, dilutions, holding times, • LCS/LCSD results, MS/MSD results, and surrogate recoveries), the data are acceptable as reported by the laboratory K\WprocenV5 BP ARCO\02093VQuulyS4 QTR 03\2093 GWMR 4Q03 doe Page 1