Code of Maine Rules
06 - DEPARTMENT OF ENVIRONMENTAL PROTECTION
096 - DEPARTMENT OF ENVIRONMENTAL PROTECTION - GENERAL
Chapter 419 - SOLID WASTE MANAGEMENT RULES: AGRONOMIC UTILIZATION OF RESIDUALS
Section 096-419-8 - Permit-by-Rule Program License for the Utilization of Composted Residuals

Current through 2024-38, September 18, 2024

A. Applicability. The permit-by-rule licensing provisions of this section shall apply to the distribution for utilization in Maine of residuals other than Type II residuals that meet all of the standards of this section. Failure to meet any of these standards will require formal application to the Department for a license to distribute composted residuals under sections 2 through 7 of this chapter. The Department assumes that the distribution of composted residuals in strict conformity with these permit-by-rule provisions will meet the standards of 06-096 CMR ch. 400, section 4 and the standards in section 2 through 6 of this chapter. No variances to the requirements of this section may be granted.

NOTE: 38 M.R.S.A. §1304(18) prohibits the Department from licensing the utilization and distribution of compost derived from Type II residuals under the permit-by-rule provisions of this section. See 06-096 CMR ch. 400 for a full definition of residual types. Type IA residuals are leaf, vegetative and other residuals with a C:N ratio of greater than 25:1. Type IB residuals are food and other residuals with a C:N ratio of between 25:1 to 15:1. Type IC residuals are fish and other residuals with a C:N ratio of less than 15:1. C:N refers to the ratio of available carbon to nitrogen of the raw residual prior to composting. See Appendix 410 A for a list of typical C:N ratios for various residuals. Type II residuals are sewage sludge, septage, and other residuals that may contain human pathogens. Type III residuals are petroleum contaminated soils and other residuals that may contain hazardous substances above the risk based standards in 06-096 CMR ch. 418, Appendix A.

B. Standards

(1) Composting. The residual must be composted prior to distribution for utilization.

(2) Sampling. Sampling must be done in accordance with 06-096 CMR ch. 405, section 6(D).

NOTE: Metals and other hazardous substances must only be measured if, based on the nature of the residuals processed and other appropriate factors, the Department determines that there is a potential for these constituents to be in the compost at levels that could pose a risk to human health or the environment.

(3) Heavy Metal Standards
(a) Monthly concentrations of metals in the compost must be less than the concentrations in table 419.3, column A if the metals are derived from sewage sludge or dewatered septage.

(b) Monthly concentrations of metals in the compost must be less than the concentrations in table 419.5, column A, if the metals are derived from a Type III residual.

NOTE: This does not necessarily mean that compost needs to be analyzed monthly for heavy metals. See 06-096 CMR ch. 405, section 6 for determining frequencies.

(4) Hazardous Substances. For compost made from Type III residuals, concentrations of hazardous substances other than heavy metals in the compost are less than the screening standards in 06-096 CMR ch. 418, Appendix A.

(5) Sharps and Synthetic Objects. The residual contains less than 0.05% by weight, of synthetic objects, and contains less than one sharp object, such as broken glass, nails or needles, per 10 tons of residual based on visual inspection.

(6) Compost Stability. The stability class of the compost must be measured and the generator must distribute information to compost users on the appropriate uses of the compost, based in part on the compost's stability.

(7) Salt Content. For compost with a salt content greater than 2 mmhos/cm, the generator must distribute information to compost users on the appropriate uses of the compost based in part on the salt content of the material.

(8) Agronomic Utilization. The compost must be distributed for agronomic utilization and each ingredient in the compost must add to the agronomic benefit of the mix as a whole.

(9) Record Keeping and Reporting. The generator will keep records and file an annual report of the volume of compost distributed in Maine each year in accordance with section 6 of this chapter.

C. Notification Requirements. At least 15 working days prior to the first shipment of any composted residual for utilization in Maine, the compost generator shall submit to the Department a permit-by-rule notification on a form developed by the Department. This notification must include:

(1) The generator's name, address, telephone number and contact person; and

(2) The appropriate application fee.

(3) Public Notice. Proof that public notice of the application has been provided as required in section 2(F) of this chapter.

(4) Facility Description. For facilities other than those licensed under 06-096 CMR ch. 410, a brief description of the compost facility including:
(a) The volume, type and characteristics of the residuals processed at the facility, any materials added to the compost prior to distribution for utilization, and the ratio of all materials in the final compost mix;

(b) The method of composting used at the facility; and

(c) A list of federal and state environmental permits held by the facility.

(5) Sampling. A copy of the Sampling and Analytical Work Plan for the facility that is used to analyze the compost to ensure compliance with the compost quality standards in section 8(B) above. The plan must including a certification from a qualified chemist that the Sampling and Analytical Work Plan meets the applicable standards of 06-096 CMR ch. 405.

(6) Marketing. A brief description of how composted residuals will be distributed in Maine and instructions for appropriate use that will be provided to the users of the compost including:
(a) The name and address of the person who prepared the compost;

(b) A statement that the compost may not be applied when the soil is frozen, snow-covered or water-saturated; such that the compost will be washed into surface water; or placed directly into surface waters or below the groundwater table, without prior approval from the Maine Department of Environmental Protection; and

(c) Recommended blending and/or loading rates based upon annual heavy metals loading, nutrients, salt content, stability, and other factors as appropriate.

(7) Certification. A statement signed by the applicant that the distribution of composted residuals will conform with the requirements of this section.

Disclaimer: These regulations may not be the most recent version. Maine may have more current or accurate information. We make no warranties or guarantees about the accuracy, completeness, or adequacy of the information contained on this site or the information linked to on the state site. Please check official sources.
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