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Page 1 of 2 <br /> Vicki McCartney [EH] <br /> From: Vicki McCartney [EH] <br /> Sent: Thursday, November 13, 2014 4:30 PM <br /> To: 'Eric Price' <br /> Subject: RE: 1600 Durham Ferry Road <br /> Hi Eric, <br /> Thank you for informing me that AS-7 has not been installed. <br /> still have questions about the wells that are being checked for depth-to-water. What is the rationale for choosing <br /> these wells each quarter? ' <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 a0sicehd.com <br /> VF4,0'I <br /> From: Eric Price [mailto:EPrice@groundzeroanalysis.com] <br /> Sent: Thursday, November 13, 2014 3:31 PM <br /> To: Vicki McCartney [EH] <br /> Subject: RE: 1600 Durham Ferry Road <br /> Hello Vicki, <br /> 1. AS-7 was not installed.Andrew is preparing a brief well installation report.There were several <br /> complications in installing a well in that location:A rig could not be used because of the ceiling <br /> and an angle boring or hand auger could not be employed because the annulus would collapse <br /> once we were below the water table.Thinking of alternatives. <br /> 2. No changes to the standard monitoring procedure. I just wanted to formalize the routine that is <br /> currently be conducted.The Work Plan lists only the wells we have access to for monitoring. <br /> Domestic well 31448,SW-101, MW-6 and MW-106 are no longer monitored because of restricted <br /> access.We shut the air sparging system off about 7 to 10 days prior to monitoring the wells,so <br /> any mounding will rebalance with the natural water table. <br /> On a side note.The new extraction wells are really working well.We've collected two vapor samples to <br /> date with TPHg levels of 4.1 million ug/m3 and 1.1 million ug/m3, respectively. Reports to follow. <br /> Have a wonderful weekend, <br /> Eric L. Price <br /> Senior Geologist, P.G. 8414 <br /> 11/14/2014 <br />