Laserfiche WebLink
Date, October 29,2003 <br /> Quarter 3'd Quarter,2003 <br /> ARCO QUARTERLY GROUNDWATER MONITORING REPORT <br /> Facility No 02093 <br /> Address 3425 Tracy Blvd , Trac , California <br /> ARCO Environmental Engineer Paul Supple <br /> Consulting Co/Contact Person URS/Vernon Elarth <br /> Consultant Project No 38466259 OL058 <br /> Primary Agency/Regulatory ID No San Joaquin County Environmental Health Department <br /> SJCEHD <br /> Assembly Bill 681 Status Property owned by Atlantic Richfield Company <br /> WORK PERFORMED THIS QUARTER (Third 2003).- <br /> 1 <br /> 003):1 Performed quarterly groundwater monitoring and sampling <br /> 2 Prepared and submitted quarterly groundwater monitoring report <br /> 3 Performed operation and maintenance on AS systems <br /> 4 Submitted Vertical Flow Assessment Report September 2,2003 <br /> WORK PROPOSED FOR NEXT QUARTER (Fourth 2003): <br /> 1 Perform quarterly groundwater monitoring and sampling <br /> • 2 Prepare and submit quarterly groundwater monitoring report <br /> QUARTERLY RESULTS SUMMARY (Third 2003): <br /> Current Phase of Project Monitoring/Remediation <br /> Frequency of Groundwater Sampling ATR-2, ATR-4, ATR-5, ATR-7, ATR-8, and ATR-12 <br /> sampled quarterly, ATR-1, ATR-3, ATR-6, ATR-9, ATR-10, <br /> and ATR-11 sampled 1 st and 3'dquarters only <br /> Frequency of Groundwater Monitoring Quarter) <br /> Is Free Product (FP) Present on Site No <br /> FP Recovered this Quarter None <br /> Cumulative FP Recovered to Date <1 gallon <br /> Current Remediation Techniques Air 5 ar in SVE system current) off <br /> TPHG removed by SVE this Quarter None <br /> Cumulative TPHG Removed 3,616 6 lbs <br /> Approximate Depth to Groundwater 8 92 to13 15 ft <br /> Groundwater Flow and Gradient Northeast at 0 0015 ft/ft <br /> ANALYTICAL DATA REVIEW: <br /> Based on the review of the analytical and hardcopy data (chain-of-custody records, blanks, dilutions, holding times, <br /> LCS/LCSD results,MS/MSD results, and surrogate recoveries),the data are acceptable as reported by the laboratory <br /> with the following limitations <br /> • The reported result for total petroleum hydrocarbons as gasoline (TPHg) in sample ATR-5 is due to a discrete <br /> peak at C-5 (probably MtBE)and has been refected - <br /> K lwpmo ssVS BP ARC01020931Quarte0f\3 QTR 6312093 GWMR 3Q03 da <br /> Page 1 <br />