New Jersey Administrative Code
Title 7 - ENVIRONMENTAL PROTECTION
Chapter 14A - NEW JERSEY POLLUTANT DISCHARGE ELIMINATION SYSTEM
Subchapter 23 - TECHNICAL REQUIREMENTS FOR TREATMENT WORKS APPROVAL APPLICATIONS
Section 7:14A-23.31 - Stabilization residuals

1. Residual stabilization and curing operations shall be enclosed and vented and shall be in compliance with the Department's air pollution control rules at N.J.A.C. 7:27. For residual stabilization operations which process less than one dry ton per day, the Department shall waive the requirement for enclosure of the residual stabilization operation, in full or in part, where the control of the effects of odor or climatic conditions are otherwise satisfactorily addressed as part of the permit application consistent with N.J.A.C. 7:14A-20.6.

2. All transfer conveyors and associated equipment shall be constructed of fire resistant materials.

3. Composting systems shall be designed to produce a sludge derived product that has a final solids content between 50 and 60 percent.

4. The aeration system shall be designed to distribute air evenly throughout the composting mass, to maintain aerobic conditions, and to control temperatures within acceptable ranges in active composting pursuant to (a) above.

5. The process monitoring system shall be designed to monitor all process criteria (such as temperature, pH, or percent solids) as required pursuant to (a) above.

6. Leachate collection and treatment shall be provided.

7. Equipment capable of adequately mixing bulking agent and dewatered sludge to the desired porosity, structure, and moisture content prior to composting shall be provided.

8. The minimum time for compost curing shall be 30 days. Compost curing capacity shall be developed independent of finished compost storage capacity.

9. Storage capacity for a minimum of 30 days production of stabilized residuals shall be provided, unless suitable alternative contingency arrangements, as acceptable to the Department, are demonstrated.

10. For active composting, the maximum height of a static pile shall not exceed seven feet.

11. Process and curing pads shall provide for drainage away from piles and shall have a minimum slope of two percent.

12. Compost curing pile designs shall provide aeration either through the installation of aeration equipment, or through mechanical turning at least two times per week. For compost curing on pads, the maximum height of the curing piles shall not exceed 10 feet.