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Page 2 of 4 (iv)a brief description of any further corrective actions that the operator or others need to take to adequately protect public health and safety and the environment prior to the implementation of the remediation plan described in subdivision(a)(3)below. (3)Within 60 days of detection, implement a remediation plan approved by the EA and CIWMB for the methane gas releases, place a copy of the plan in the operating record,forward a copy of the plan to the EA and CIWMB,and notify the EA that the plan has been implemented.The plan shall describe the nature and extent of the problem and the proposed remedy. (4)Construct a gas control system that meets the criteria of Section 20939,designed by a registered civil or mechanical engineer,within a period of time specified by the EA. Installation of the system shall be in accordance with a design and in a manner approved for construction by the EA in coordination, if applicable,with the RWQCB. (b)The EA,with concurrence by the CIWMB, may establish an alternative schedule for demonstrating compliance with subdivisions(a)(2)and(3)pursuant to 40 CFR 258.23(c)(4). (c)The EA shall forward notifications and approvals made pursuant to¶¶(a)(1), (2)and(3)to the CIWMB If you have any question please let me know. Robert Robert McClellon, Program Coordinator REHS Environmental Health Department 1868 E. Hazelton Ave Stockton, CA 95205-6232 Phone (209) 468-0332 Fax (209) 468-8392 From: Natalia Subbotnikova [EH] Sent: Monday,July 16,2012 8:14 AM To: 'Michael Carroll' Cc: Robert McClellon [EH];Joyesh Chandra Subject: RE: Corral Hollow Landfill-GW-6 Good morning Michael, On July 13,2012 concentrations of gas probe measured the following for methane%: GW 6—Shallow—0.0 Intermediate—1.1 Deep—6.1 Corral Hollow Landfill still under violation for T 27 CCR 20921 —Gas Monitoring and Control. Please,take adequate measures to decrease gas level at the property boundary. Thanks..... Natalia From: Michael Carroll [mailto:mcarroll@sjgov.org] Sent: Monday,July 16, 2012 7:52 AM To: Natalia Subbotnikova [EH] Cc: Robert McClellon [EH];Joyesh Chandra Subject: RE: Corral Hollow Landfill-GW-6 Good morning Natalia, We monitored the perimeter wells on July 5,and were pleased to find that GW 6 was back in compliance, probably due to our adjustment of the LFG system. I have attached our spreadsheet,which is on its way to you in hardcopy in our report of quarterly monitoring. At this time,we don't propose any further action,but this well 7/16/2012