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Probe valve shall be Harrington Industrial Plastics, Hayward Industrial Products, <br />part number LC12, or equivalent. <br />2.03 BACKFILL MATERIALS <br />A. Pea Gravel <br />Pea Gravel shall: <br />1. Consist of rounded to subangular material from a natural source <br />(not crushed). <br />2. Contain no limestone. <br />3. Have maximum particle size of 3/8 -inch. <br />4. Contain 50 to 90 percent by weight passing the No. 4 Sieve. <br />5. Contain less than 3 percent by weight passing the No. 200 Sieve. <br />Bentonite shall be premium grade sodium bentonite clay <br />Granular bentonite shall be 8 mesh granules, Benseal, or approved equivalent. <br />Powdered bentonite shall have particle size such that 90% passes through a 200 - <br />mesh sieve. <br />2.04 CONCRETE <br />Concrete shall comply with ASTM C85, or Ready -Mixed concrete complying with <br />ASTM C94. <br />2.05 ENCLOSURE <br />Enclosure shall be fabricated of square steel tube or equivalent, provided with hinged <br />top and hasp. Enclosure shall be shop -manufactured, all cuts straight and at right <br />angles. <br />Enclosure shall be Conier's Welding (706-342-2444) or equivalent. <br />PART 3 - EXECUTION <br />3.01 PERMITS <br />A. The County will obtain permits for this work. <br />Single Probe <br />LFG Migration Monitoring Well Specifications 4 of 8 <br />