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TITLE 30ENVIRONMENTAL QUALITY
PART 1TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
CHAPTER 332COMPOSTING
SUBCHAPTER COPERATIONS REQUIRING A REGISTRATION
RULE §332.37Operational Requirements

The operation of the facility must comply with all of the following operational requirements.

  (1) Protection of surface water. The facility must be constructed, maintained, and operated to manage run-on and run-off during a 25-year, 24-hour rainfall event and must prevent discharge into waters in the state of feedstock material, including, but not limited to, in-process and/or processed materials. Any waters coming into contact with feedstock, in-process, and processed materials must be considered leachate. Leachate must be contained in retention facilities until reapplied on piles of feedstock, in-process, or unprocessed materials. The retention facilities must be lined and the liner must be constructed in compliance with paragraph (2) of this section. Leachate may be treated and processed at an authorized facility or as authorized by a Texas Pollutant Discharge Elimination System permit. The use of leachate in any processing must be conducted in a manner that does not contaminate the final product.

  (2) Protection of groundwater. The facility must be designed, constructed, maintained, and operated to protect groundwater. Facilities that compost municipal sewage sludge, disposable diapers, and/or the sludge byproduct of paper mill production must install and maintain a liner system complying with the provisions of subparagraph (A), (B), or (C) of this paragraph. The liner system must be provided where receiving, mixing, composting, post-processing, screening, or storage areas would be in contact with the ground or in areas where leachate, contaminated materials, contaminated product, or contaminated water is stored or retained. The application must demonstrate the facility is designed to prevent contamination or degradation of the groundwater. For the purposes of these sections, protection of the groundwater includes the protection of perched water or shallow surface infiltration. The lined surface must be covered with a material designed to withstand normal traffic from the composting operations. At a minimum, the lined surface must consist of soil, synthetic, or an alternative material that is equivalent to two feet of compacted clay with a hydraulic conductivity of 1 x 10 -7 centimeters per second or less.

    (A) Soil liners shall have more than 30% passing a number 200 sieve, have a liquid limit greater than 30%, and a plasticity index greater than 15.

    (B) Synthetic liners shall be a membrane with a minimum thickness of 20 mils.

    (C) Alternative designs shall utilize an impermeable liner (such as concrete).

  (3) Unauthorized and prohibited materials. The operator shall operate the facility in a manner that will preclude the entry of any unauthorized or prohibited materials from entering the composting process.

  (4) Access. Access to the facility shall be controlled to prevent unauthorized disposal of unauthorized or prohibited material and scavenging. The facility shall be completely fenced with a gate that is locked when the facility is closed.

  (5) Nuisance conditions. The facility shall be sited and operated in such a manner as to prevent the potential of nuisance conditions and fire hazards. Where nuisance conditions or fire hazards exist, the operator will immediately take action to abate such nuisances.

  (6) Aerobic composting required. The facility shall utilize functionally aerobic composting methods, although an anaerobic composting phase may be utilized in the early stages of processing, if it is followed by a period of functionally aerobic composting.

  (7) Site sign. The facility shall have a sign at the entrance indicating the type of facility, the registration number, hours of operation, and the allowable feedstocks.

  (8) Access road. The facility access road shall be an all-weather road.

  (9) Authorization required for significant changes. The operator shall obtain written permission from the commission before changing the processing method or other significant changes to the original registration application.

  (10) Prohibited substances. Fungicides, herbicides, insecticides, or other pesticides that contain constituents listed in 40 Code of Federal Regulations Part 261, Appendix VIII-Hazardous Constituents or on the Hazardous Substance List as defined in the CERCLA shall not be applied to or incorporated into feedstocks, in-process materials, or processed materials.

  (11) End-product standards.

    (A) Facilities that compost municipal sewage sludge. For facilities that compost only municipal sewage sludge or compost municipal sewage sludge with any source-separated materials, the operator shall comply with the provisions of Chapter 312 of this title (relating to Sludge Use, Disposal, and Transportation) and shall not exceed the foreign matter criteria contained §332.72(d)(2)(A) and (D) of this title (relating to Final Product Grades).

    (B) All other registered facilities. The operator shall meet compost testing requirements set forth in §332.71 of this title (relating to Sampling and Analysis Requirements for Final Product), final product grades set forth in §332.72 of this title, and label all materials which are sold or distributed as set forth in §332.74 of this title (relating to Compost Labelling Requirements).

  (12) Certified operator. The operator shall employ at least one TCEQ-certified compost operator within six months from the adoption of this rule, the initiation of operations at the compost facility, or the establishment of the compost certification program, whichever occurs later, and a TCEQ-certified compost operator shall routinely be available on-site during the hours of operation.

  (13) Chemical release. The operator of a compost facility shall address the release of a chemical of concern from a compost facility to any environmental media under the requirements of Chapter 350 of this title (relating to Texas Risk Reduction Program) to perform the corrective action.


Source Note: The provisions of this §332.37 adopted to be effective November 29, 1995, 20 TexReg 9717; amended to be effective September 23, 1999, 24 TexReg 7417; amended to be effective January 8, 2004, 29 TexReg 140

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