Specifications include, but are not limited to: The Proposer must perform all necessary activities such as, but not limited to, planning, permitting, financing, design, construction, operation, maintenance, and environmental monitoring services for the RFF to produce on-specification RNG. On-specification RNG shall be produced per the requirements and specifications of the natural gas utility, AGL. Per AGL’s requirements on-specification pipeline quality natural gas shall be: • be free of objectionable elements or compounds that will render the gas unusable for its commonly used applications; • be commercially free from dust, gums, gum-forming constituents, or other liquid or solid matter which might become separated from the gas in the course of transportation through the pipeline or which could cause inaccurate measurement; • not contain more than 12 PPM of total sulfur (prior to odorizing) or 4 PPM of hydrogen sulfide; • not contain more than 3 percent by volume of carbon dioxide or nitrogen; • not contain more than 1 percent by volume of oxygen; • not contain more than 4 percent total inerts; • not contain more than 7 pounds of water per 1,000 MCF; • have a temperature of not more than 120 degree Fahrenheit, nor less than 40 degrees Fahrenheit; • have a Wobbe Index range between 1,234 and 1,395; • have a gross heating value of at least 950 Btu per cubic foot of dry gas but no higher than 1,045 Btu per cubic foot of dry gas. The gross heating value of the gas shall be determined by a mutually acceptable test of one cubic foot of gas at a temperature of 60 degrees Fahrenheit and at a pressure of 14.73 pounds per square inch absolute. Tests to determine the heating value will be conducted at time intervals determined by AGL. The point of test shall be as close as practical to the point of custody transfer between supplier and AGL; and • be free of the level of microbial constituents that contribute to microbial-induced corrosion.
