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1 <br /> Page 1 of 2 <br /> Vicki McCartney [EH] <br /> From: Vicki McCartney [EH] <br /> Sent: Friday, June 21, 2013 3:23 PM <br /> To: 'Andrew Dorn' <br /> Cc: Ray Kablanow; Jenny Weese <br /> Subject: RE: George's Service- 1600 W. Durham Ferry Rd., Tracy <br /> Good afternoon Andrew, <br /> This afternoon Nuel Henderson, PG, and I discussed your proposal to collect dissolved oxygen and <br /> oxidation/reduction potential readings from MW-7 instead of MW-106. Nuel and I agree that it is appropriate to <br /> switch from monitoring MW-106 to monitoring MW-7 henceforth. <br /> Thank you, Andrew. <br /> Vicki McCartney, Senior REHS <br /> San Joaquin County <br /> Environmental Health Department <br /> 1868 East Hazelton Avenue <br /> Stockton, California 95205 <br /> Phone: (209)468-9852 <br /> Email: vmccartnev@s]cehd.com <br /> W' <j <br /> From: Andrew Dorn [mailto:AndrewD@gtienv.com] <br /> Sent: Thursday, June 20, 2013 11:21 AM <br /> To: Vicki McCartney [EH] <br /> Cc: Ray Kablanow; Jenny Weese <br /> Subject: George's Service - 1600 W. Durham Ferry Rd., Tracy <br /> Good morning Vicky, <br /> I am contacting you in regards to the George's Service site located at 1600 W. Durham Ferry Rd. <br /> southeast of Tracy. I would like to let you know that we will be installing the air sparge wells on Friday, <br /> June 21 starting at 7 am. <br /> AS-5 location <br /> Upon looking at pictures of the soil excavation, it appears the excavation sidewall parallel to the sites <br /> building came within 2 or 3 feet of the building foundation at a slope of about 45 degrees.The revised <br /> location of AS-5 will be as close to the building as the drill rig will allow (^'4-5 feet)and should initially <br /> begin in the excavation fill and enter the native soil below prior to 5 feet bgs.Soil samples will be <br /> collected from the AS-5 borehole every five feet starting at 5 feet bgs. <br /> Monthly performance monitoring <br /> GZA is currently collecting DO and ORP readings from select groundwater monitoring wells, including <br /> down-gradient off-site well MW-106.We are currently having trouble getting an access agreement from <br /> the property owner and would like to begin monitoring down-gradient well MW-7 rather than MW-106. <br /> 6/21/2013 <br />