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San Joaquin County
<br /> o QUt"' Environmental Health Department °►R�na H
<br /> ),•',.��'•.o donna Heran, RENS
<br /> a: 1868 East Hazelton Avenue
<br /> v: PROGRAM COORDINATORS
<br /> s " X Stockton, California 95205-6232 ALE RobertNlcClellon, REHS
<br /> • Jeff Carruesoo,REHS, RDI
<br /> P
<br /> Website: ti+vww.sjgov.arg/ehd Kasey Foley, REHS
<br /> Phone: (209) 468.3420 Linda Turkatte,REHS
<br /> Fax: (209) 464-0138
<br /> January 31, 2013
<br /> Mrs. Winifred Alexander Mr. Sarbjit Singh Sarao
<br /> Mary Gardella Trust 1305 South Wilson Way
<br /> 5252 nd Street Stockton, California 95205
<br /> Santa Cruz, California 95060
<br /> Estate of Mr. Joseph Gardella
<br /> Mr. Dennis Caspe, Esquire
<br /> 2035 North Pacific Avenue
<br /> Santa Cruz, California 95060
<br /> Subject: Former Stefano's Gasoline Station
<br /> 1419 East Charter Way
<br /> Stockton, California 95205
<br /> The San Joaquin County Environmental Health Department (EHD) has received and reviewed
<br /> Well Destruction Work Plan (work plan), dated 18 January 2013, submitted by your consulting
<br /> firm, Advanced GeoEnvironmental, Inc. (AGE), on your behalf for the above-referenced site.
<br /> The EHD had directed the submittal of a well destruction work plan by letter dated 31 October
<br /> 2012.
<br /> In the work plan, AGE proposes to destroy monitoring wells MW-1, MW-3, MW-4, MW-5, MW-6,
<br /> MW-7, soil vapor extraction wells SVE-4 and SVE-5, and ozone sparge wells OZ-2 and OZ-3 by
<br /> pressure grouting; and MW-2, MW-8, SVE-1, SVE-2, SVE-3, OZ-1 and OZ-4 by removing the
<br /> well components by over-drilling the wells. Although it is unclear whether AGE proposes to
<br /> pressure grout or over-drill MW-9, the EHD approves this well to be pressure grouted since
<br /> contaminants of concern have not been detected in any soil or groundwater samples collected
<br /> from MW-9.
<br /> The San Joaquin County Well Standards require over-drilling and removing well contents as the
<br /> method of destruction if the well is in an area of known or suspected contamination. The EHD
<br /> has reviewed the site soil data to determine if the wells proposed for destruction by pressure
<br /> grouting qualify for that destruction method. The EHD determined that the following wells
<br /> qualify for destruction by pressure grouting: MW-1, MW-4, MW-5, MW-6, MW-7, MW-9, SVE-4,
<br /> SVE-5, and OZ-2.
<br /> The remaining wells: MW-2, MW-3, MW-8, SVE-1, SVE-2, SVE-3, OZ-1, OZ-3 and OZ-4, have
<br /> either impacted groundwater or are located in an area of known or suspected contamination.
<br /> These wells must be destroyed by removal of the well contents prior to grouting from the bottom
<br /> upward using a tremie pipe.
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