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00., 'N 0 Q Page 1 of 2 <br />Garrett T. Backus [EH] <br />From: Michael Carroll [mcarroll@sjgov.org] <br />Sent: Tuesday, May 15, 2007 7:39 AM <br />To: Garrett T. Backus [EH] <br />Cc: Dan Johnson; Joyesh Chandra <br />Subject: RE: Foothill Gas Probe #4 <br />Garrett, <br />Very good. Thanks <br />Mike <br />W. Michael Carroll, PE <br />Senior Civil Engineer, Solid Waste Division <br />1810 E. Hazelton Ave. <br />Stockton, CA 95205 <br />Voice: 209-468-8504 <br />Fax: 209-468-3078 <br />-----Original Message ----- <br />From: Garrett T. Backus [EH] [mailto:gbackus@sjcehd.com] <br />Sent: Monday, May 14, 2007 4:35 PM <br />To: Michael Carroll <br />Subject: RE: Foothill Gas Probe #4 <br />Hi Mike, <br />Since the gas was first detected on March 23, the "within 60 days of detection" period would be May 23. <br />20919.5 requires the operator to implement a remediation plan. As a first step, this could consist of <br />checking the extraction system and verifying that it is working correctly. You could also mention that <br />0.5% was found on May 10th. This information can be summarized in a letter to the EHD. The letter <br />should also include the next step to be taken if well #4 continues to show >5% methane in future months. <br />Garrett <br />From: Michael Carroll [mailto:mcarroll@sjgov.org] <br />Sent: Monday, May 14, 2007 12:16 PM <br />To: Garrett T. Backus [EH] <br />Subject: RE: Foothill Gas Probe #4 <br />No Violation and no need for corrective action? <br />W. Michael Carroll, PE <br />Senior Civil Engineer, Solid Waste Division <br />1810 E. Hazelton Ave. <br />Stockton, CA 95205 <br />Voice: 209-468-8504 <br />Fax: 209-468-3078 <br />-----Original Message ----- <br />From: Garrett T. Backus [EH] [ma I Ito: gbackus@sjcehd.com] <br />Sent: Monday, May 14, 2007 8:14 AM <br />To: Michael Carroll <br />Subject: RE: Foothill Gas Probe #4 <br />5/15/2007 <br />