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R. Cock Valve shall be %" diameter provided with hose barb X male pipe thread fittings, comprised of polyvinyl chloride (PVC) and shall be Harrington Industrial Plastics, Hayward Industrial Products, part number LC12, or equivalent. S. Saddles to attach to HDPE LFG headers shall be full face T. Valve boxes shall be Christy Fiberlite FL36T or equivalent. Valve box extensions shall be used to maintain required clearance. Valve box lid shall be labeled with the well number with yellow oil-based paint. The label lettering shall be four inches high. U. Geonet will be provided by the County in rolls. The Contractor shall cut Geonet in required sizes as needed. V. All screws shall be stainless steel indented Hex Washer Head slotted type. The screws on the 3" Sch 80 coupling shall be 7/8" in length. The screws on the expansion joint shall be 3/8" in length. W. The well skirt shall be Landtec WBS -100-4 or equivalent. The Contractor may choose to order well skirts from Real Environmental Products. X. Backfill soil for trenches or horizontal collectors is available on-site at all sites. Contractor shall excavate backfill soil on-site as directed by the Engineer. , Y. Soil backfill in trenches shall be moistened and compacted firm and unyielding using jumping jack or equivalent. II. Submittals A. Contractor shall submit information on the following items prior to use on the site. Engineer will retain two copies of each submittal. Use of proposed items will be conditional on approval of the submittals. 1. LFG well drain rock 2. Bentonite used for well sealing 3. Gate valves. 4. GCL if provided by the Contractor 5. Proposed substitutions or alternative work items prior to use on the site B. The County will review submittals without deliberate delay upon receiving the submittals. The County will be the sole judge of the sufficiency of the information. C. Review of submittals by the County does not relieve the contractor of responsibility to follow the contract specifications, nor does it relieve the contractor from responsibility for errors or omissions in the submittal. Allowed deviations from the contract specifications, if any, will be specifically and explicitly identified in writing by the County. D. Contractor shall submit proposals for substitutions to the Engineer, and shall obtain approval of those substitutions before proceeding with those substitutions. On -Call LFG System Maintenance Contractor 8 San Joaquin County Purchasing Department