Specifications include, but are not limited to: Septic tanks shall be either HDPE, Fiberglass, or Steel septic tanks plus fittings and fixtures as necessary. The tanks shall be of 1000, 1250, and 1500 gallons capacity as indicated on the Plans and shall meet all requirement of the Alaska Department of Environmental Conservation (ADEC). As such, the tank shall have two compartments with 24" diameter manhole openings, and water tight riser systems. 1. Greer Tank 2. Anchorage Tank 3. Xerxes Tanks 4. Infiltrator Tanks, or approved equal; The polyethylene used shall comply with ASTM Standard Dl248, Specification for Polyethylene Plastics Molding and Extrusion Materials. Raw materials shall meet or exceed the following: 1. D-l248, Class B - requiring ultraviolet stabilizer or 2. D-l248, Class C - requiring a minimum 1% carbon black and 3. D -638 - Tensile strength of 2,400 pounds or greater 4. D-l693 - Environmental stress crack resistance of 150 hours or more 5. D790 - Flexural modulus of elasticity of 85,000 pounds or greater; All tanks shall be of monolithic construction and shall be blow molded using high molecular weight HDPE resin. There shall be no metal parts molded into polyethylene tanks. Field assembly or modification of tanks is strictly prohibited with the exception of basic piping systems and risers...
