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Page 4 of 4 <br /> telephone or electronic means. <br /> (2)Within seven(7)days of detection of excessive landfill gas concentrations. <br /> (A)Verify validity of results by reviewing the following: <br /> (i)probe readings; <br /> (ii)possible liquid interference; <br /> (iii)control well influence;and <br /> (iv)barometric pressure effects. <br /> (B)Place in the operating record a description of and submit a letter to the EA that describes: <br /> (i)the levels of methane and trace gas detected; <br /> (ii)a brief description of the nature and extent of the problem based on information currently available; <br /> (iii)the steps the operator has taken to protect public health and safety and the environment;and <br /> (iv)a brief description of any further corrective actions that the operator or others need to take to adequately protect <br /> public health and safety and the environment prior to the implementation of the remediation plan described in subdivision <br /> (a)(3)below. <br /> (3)Within 60 days of detection, implement a remediation plan approved by the EA and CIWMB for the methane gas <br /> releases,place a copy of the plan in the operating record,forward a copy of the plan to the EA and CIWMB, and notify <br /> the EA that the plan has been implemented.The plan shall describe the nature and extent of the problem and the <br /> proposed remedy. <br /> (4)Construct a gas control system that meets the criteria of Section 20939,designed by a registered civil or mechanical <br /> engineer,within a period of time specified by the EA. Installation of the system shall be in accordance with a design and <br /> in a manner approved for construction by the EA in coordination, if applicable,with the RWQCB. <br /> (b)The EA,with concurrence by the CIWMB, may establish an alternative schedule for demonstrating compliance with <br /> subdivisions(a)(2)and(3)pursuant to 40 CFR 258.23(c)(4). <br /> (c)The EA shall forward notifications and approvals made pursuant to¶¶(a)(1),(2)and(3)to the CIWMB. <br /> Thank you. <br /> Natalia Subbotnikova,Senior REHS <br /> San Joaquin County Environmental Health Department <br /> 1868 E Hazelton Ave <br /> Stockton,CA 95205 <br /> (209)468-0338 <br /> 7/16/2012 <br />