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Stantu <br /> Monthly Status Report - April 2013 <br /> Chevron Facility #92033 - Stockton Charter Way Commingled Plume No . CP0057 <br /> May 14 , 2013 <br /> Remediation Recommendation <br /> Based on the system data , Stantec recommends continuous operation , maintenance , and <br /> optimization of the AS and SVE remediation system . <br /> Characterization Status <br /> Petroleum hydrocarbon impacts in the soil are adequately delineated by the historical analytical <br /> data and previous assessment activities . Petroleum hydrocarbon impacts in the groundwater <br /> may need further delineation as described in the Site Conceptual Model dated January 14 , <br /> 2011 . <br /> The Further Assessment Work Plan submitted to CRWQCB- CVR on February 15 , 2011 <br /> included details of the proposed assessment activities to fill in the identified data gaps . In a <br /> meeting with the CRWQCB -CVR , Stantec, and the responsible parties ( RPs ) on March 16 , <br /> 2011 , the CRWQCB - CVR suggested that active remediation be implemented at Chevron <br /> Facility #92033 ( the most upgradient location of the Site ) and that the proposed assessment <br /> activities be postponed pending results of active remediation . <br /> Waste Disposal Summary <br /> Stantec generated approximately 40 . 9 gallons of purged groundwater during the redevelopment <br /> of wells AS - 11 and AS - 12 on April 5 , 2013 and stored in a 55-gallon drum located inside the <br /> remediation compound . Condensate water collected through the SVE moisture separator tank <br /> will also be stored in 55-gallon drums . A certified waste hauler will properly dispose all stored <br /> drums at end of each quarter . <br /> Recent Correspondence <br /> Stantec received a document review letter from CRWQCB-CVR on April 23 , 2013 <br /> (Attachment A) . In accordance with that letter , monthly status reports will be submitted 15 days <br /> after the end of each month for the first three months of operation , followed by system status <br /> updates as part of the semi-annual monitoring reports and quarterly status reports prepared for <br /> the site . <br /> This Month 's Activities (April 2013) <br /> 1 . Stantec operated the AS/SVE system located at Chevron Facility #92033 . <br /> 2 . Stantec developed air sparge wells AS - 11 and AS- 12 on April 5 , 2013 , <br /> 3 . Stantec performed AS influence testing on April 9 and 12 , 2013 , <br /> 4 . Stantec prepared and submitted the Remedial System Installation and Startup Report to <br /> CRWQCB - CVR on April 15 , 2013 , <br /> 5 . Blaine Tech performed the semi- annual groundwater monitoring and sampling event <br /> from April 22 to 25 , 2013 . <br /> 6 . Stantec began full time operation of the AS system on April 26 , 2013 , <br /> 7 . Stantec collected influent and effluent vapor samples from the SVE system on April 26 , <br /> 2013 in accordance with the SJVAPCD ATC No . N - 8790- 1 -0 requirements . <br /> Next Month 's Activities (May 2013) <br /> 1 . Stantec will prepare and submit a one -time SJVAPCD Initial Compliance Report by <br /> May 13 , 2013 . <br /> 2 . Stantec will perform O & M for the AS /SVE system located at Chevron Facility #92033 . <br /> 3 . Stantec will prepare the next Monthly Status Report. <br /> Stockton Charter Way Commingled Plume Monthly Status Report - April . doc 5 <br />