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Conditions for N-339-17-10 (continued) Page 9 of 9 93. Ench owner nr Operator scoking to comply with G0.752(b)(2)(i)(h) shall cunslruct the gas collection devices using the following equiprueut or procedures- (1) The Iundfill gas extraction components shall be constructed of polyvinyl chloride (PVC), high density polyethylene (HDPE) pipe, fiberglass, Stainless steel, or other nonporous corrosion resistant material of suitable dimensions to: cnnvey projectal amounts of gases; withstand installation, static, anti settlement forces, and withstand planned ovcrbur(fun or traffic loads The collection system shall extend Is necessary to comply with emission anti migration standnids. Collection devi"s such as wells and horizontal collectors shall be perforated to allow gas entry without lie3d loss sufficient to impair performance across the intended extent of control. Perforations shall be Situated with regard to the need to prevent excessive air infiltration; (2) Vertical wells shall be placed so as not to endanger underlying liners and shall address the occurrence of water within the landfill, Holes and trenches constructed for pined wells and hurizuutol collectors shall he of sufficient cross-section so as to allow for their proper construction and completion including, for example, centering of pipes and placement of gravel backfill. Cuilcctiun devices shall he designed so as not to allow indirect short circuiting of air itito the cover or reti.tsz into the collection system or gas into the air. Any gravel used around pipe perforations should be of a dimension so as not to penetrate or block perforations; (3) C:nlleetion devices may be connected to the collection header pipes below or above the landfill surraee. The coruicctor assembly shall include a positive closing throttle valve, any necessary senls Ind couplings, access couplings and at least one st,mpling port. The collection devices shall he constructed of PVC, I IDPE, tiliergt335, stainless stC. 1, or other nonporous niaterial of suitable thickness. [40 CFR 60.759(b)] Fcdcnrlly Enforccable'llirough Title V Permit 94. Each owner or operator seeking to comply with 60.752(b)(2)(1)(A) shall convey the huadfill gas to a control system in compliance with 60.752(b)(2)(iii) through the collection header pipe(s). The gas mover equipment shall be sired to handle the maximum gas generation flow rate expected over the intended use period of the gas moving equipment using the following procedures: (1) For existing collection systems, the flow data shall be used to project the maximum flow rate. If no flow data exists, the procedures in paragraph 60.759(c)(2) shall be used; (2) For new collection SYMMS, the rrurximum now rate shall be in accordance with %755(a)(1). [40 CFtt 60.759(c)] Federally Enforceable 'Through Title V Permit uun�l�l:anu7COf SY1y SET