|
DOCUMENT REVIEW, THE TRANSMISSION STORE, 515 WEST CHARTER WAY,
<br />STOCKTON, SAN JOAQUIN COUNTY (REGIONAL BOARD CASE # 390891)
<br />reviewed the Remedial Well Installation Work Plan (Workplan), received 30 April 2013 from
<br />your consultant Advanced GeoEnviron mental Inc. (AGE). The Workplan was written in
<br />response to my 11 April 2013 letter (Letter) that requested the Workplan for the two additional
<br />air sparge wells (SP -6A and SP -7A) in the plume core to the south of the existing AS system as
<br />previously recommended in the 9 April 2013 AGE email, and also requested:
<br />• The new AS wells installation and plumbing into the AS system by 30 June 2013,
<br />• Continued air sparging in the interim (The Letter stopped soil vapor extraction),
<br />• Submittal of a remediation status report with recommendations as necessary in the
<br />semi-annual groundwater monitoring report due 30 July 2013, and
<br />• Monthly email status reports received by the 15th of each month (May 15th, June 15th, etc.)
<br />on the progress towards modifying the AS treatment system until further notice.
<br />The two 2" diameter polyvinyl chloride (PVC) wells will be screened from 43' below ground
<br />surface (bgs) to 45' bgs, and connected by 1" PVC pipe to the existing AS system air
<br />compressor. The Workplan also compared AS versus In -Situ Chemical Oxidation and/or Batch
<br />Groundwater Extraction in a feasibility study, which concluded installation of SP -6A and SP -7A
<br />as the most cost effective method to address the area of significant groundwater contamination.
<br />The Workplan is approved, and is necessary and appropriate to optimize the AS system.
<br />Please contact me at least three working days prior to start of the fieldwork. If you have any
<br />questions, you may call me at (916) 464-4615 or email me at jbarton waterboards.ca.gov.
<br />James L. L. Barton, P.G.
<br />Engineering Geologist
<br />cc: Nuel Henderson, San Joaquin County Environmental Health Department, Stockton
<br />William Little, Advanced GeoEnviron mental Inc., 837 Shaw Rd., Stockton 95215
<br />KAR_ E. L-oNGLEY ScD, P.E., CHAIR I PAMELA C. CiREEDON P.E.. BCEE, EXECUTIVE OFFICER
<br />11020 Sur Center Drive #200, Rancho Cordova, CA 95670 '!, wwwwaterboards ca.gov/centralvalley
<br />Ca Rr CYOLFO PARCR
<br />,••�
<br />�,i EDMUND G. BROWN JR.
<br />OV FA NOf�
<br />,�
<br />C n I F O R N n
<br />MATTHEW RODRIQUEZ
<br />Water Boards
<br />SECRETFOR
<br />ARYNTAI PROTFr.T10N
<br />FNVIROARY
<br />Central Vahey Regional Water Quality Control Board
<br />REuEIVED
<br />2 May 2013
<br />MAY 0 3 2013
<br />Mr. Donald Rodgers
<br />11900 South Union Rd.
<br />ENVrP�?�ICJiEhlTALi`�LTH
<br />PERIWI?/SERVICES
<br />Manteca, CA 95336
<br />DOCUMENT REVIEW, THE TRANSMISSION STORE, 515 WEST CHARTER WAY,
<br />STOCKTON, SAN JOAQUIN COUNTY (REGIONAL BOARD CASE # 390891)
<br />reviewed the Remedial Well Installation Work Plan (Workplan), received 30 April 2013 from
<br />your consultant Advanced GeoEnviron mental Inc. (AGE). The Workplan was written in
<br />response to my 11 April 2013 letter (Letter) that requested the Workplan for the two additional
<br />air sparge wells (SP -6A and SP -7A) in the plume core to the south of the existing AS system as
<br />previously recommended in the 9 April 2013 AGE email, and also requested:
<br />• The new AS wells installation and plumbing into the AS system by 30 June 2013,
<br />• Continued air sparging in the interim (The Letter stopped soil vapor extraction),
<br />• Submittal of a remediation status report with recommendations as necessary in the
<br />semi-annual groundwater monitoring report due 30 July 2013, and
<br />• Monthly email status reports received by the 15th of each month (May 15th, June 15th, etc.)
<br />on the progress towards modifying the AS treatment system until further notice.
<br />The two 2" diameter polyvinyl chloride (PVC) wells will be screened from 43' below ground
<br />surface (bgs) to 45' bgs, and connected by 1" PVC pipe to the existing AS system air
<br />compressor. The Workplan also compared AS versus In -Situ Chemical Oxidation and/or Batch
<br />Groundwater Extraction in a feasibility study, which concluded installation of SP -6A and SP -7A
<br />as the most cost effective method to address the area of significant groundwater contamination.
<br />The Workplan is approved, and is necessary and appropriate to optimize the AS system.
<br />Please contact me at least three working days prior to start of the fieldwork. If you have any
<br />questions, you may call me at (916) 464-4615 or email me at jbarton waterboards.ca.gov.
<br />James L. L. Barton, P.G.
<br />Engineering Geologist
<br />cc: Nuel Henderson, San Joaquin County Environmental Health Department, Stockton
<br />William Little, Advanced GeoEnviron mental Inc., 837 Shaw Rd., Stockton 95215
<br />KAR_ E. L-oNGLEY ScD, P.E., CHAIR I PAMELA C. CiREEDON P.E.. BCEE, EXECUTIVE OFFICER
<br />11020 Sur Center Drive #200, Rancho Cordova, CA 95670 '!, wwwwaterboards ca.gov/centralvalley
<br />Ca Rr CYOLFO PARCR
<br />
|