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Kvaerner Metals Project No. 306900 General Specification No. GC-01 I Site Work When completed, the tops of manholes, field inlets, and other structures shall be accurately brought to the elevations called for on the drawings; or, if no elevation is indicated, they shall be brought flush with the surface of the surrounding ground or ' pavement. ~' Riprap shall consist of hard, dense, durable stone, angular in shape and resistant to weathering. Rounded stone or boulders will not be accepted as riprap material. The stone shall have a specific gravity of at least 2.5. Each piece shall have its greatest dimension not greater than three times its least dimension. Nominal stone size shall be 6 inches. ' 9.0 FENCING Chain link fence and gates shall be of galvanized No. 9 gage wire, woven in 2 in. ' diamond mesh in accordance with ASTM A 392. The fence fabric shall be stretched and securely fastened to the posts, top bar and the bottom tension wire. The top bar shall be 1-1/2 inch diameter schedule 40 pipe and the bottom wire shall be one strand of 9 gage wire to prevent easy lifting. The weight of the zinc coating on the diamond mesh shall be not less than 1.2 ounces per square foot of actual surface covered when tested in accordance with ASTM A 90. At Upper site, all chain link fences and at Lower site, chain link fence around the evaporation pond shall be 8 ft high with extension arm carrying 3 barbed wires extending ' 12 in. above the fence at a 45 degree angle leaning outward. Elsewhere at Lower site, chain link fence shall match the existing. Fence posts shall be spaced ten feet on centers and shall be set a minimum of three feet into concrete footings. Top of footings shall be crowned to shed water. All pipe posts shall conform to ASTM A 53, and shall be galvanized in accordance with ASTM A 123 with a minimum of 2 ounces per square foot of surface area. Line fence posts shall be 2-1/2 in. diameter, Schedule 40 Pipe. Comer, end and pull posts shall be a minimum of 3 in. diameter, Schedule 40 Pipe. End, comer, gate and latch posts shall be braced to the nearest line (pull) post with a 3/8 inch diagonal tension rod, from top of the pull post to the bottom of such posts. Each rod shall be equipped with a turnbuckle or truss tightener with tensile strength equal to that of the rod. Line posts shall be braced with two 318 inch diagonal tension rods; crossed, at intervals not to exceed 1000 feet. ' Where required, gates of similar construction shall be provided, including latch device suitable for locking gates with padlock. 9.1 Remote Operation of Main Gates At the Upper and Lower site, a motorized main gate shall be provided with the following controls: ' J:VOfi91WPl5PEC457RUC11GCO19PC.DOG,Ra'. 111 11 Pm1sE JWy 37, 1999