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 096-419-5 - Suspension of Utilization Site Use

Universal Citation: 06 ME Code Rules § 096-419-5

Current through 2025-13, March 26, 2025

A. Suspension Action Levels. Application of residuals at a utilization site must be suspended when the generator, operator or Department determines that the residual supplies the parameter of concern and one or more of the following standards have been exceeded in the site soil:

(1) Soil pH is greater than 6.5 SU, and base saturation of the soil's cation exchange capacity is less than 2.5% potassium or 10% magnesium, or its equivalent;

NOTE: "or its equivalent" means that alternative analytical methods may be used to evaluate compliance with this standard. For example, by measuring the concentration of potassium or magnesium in site soil, and using a reasonably conservative assumption of what the CEC is in the site soil, the generator may demonstrate that this standard has been met.

(2) Base saturation of the soil's cation exchange capacity is greater than 15% sodium;

(3) pH of 7.5 SU;

(4) Organic matter content of 12% (dry weight basis);

(5) One or more of the following heavy metal concentrations:
(a) For sewage sludge, the concentrations in table 419.3, column E

(b) For residuals other than sewage sludge, the concentrations in table 419.5, column B;

(6) The concentration in 06-096 CMR418 Appendix A of any parameter other than metals; or

NOTE: This standard does not mean that all site soils must be sampled for all the parameters in 06-096 CMR ch. 418, Appendix A. The site soil will have to be tested for compounds that may be reasonably expected to be found. Analytical requirements depend upon the loading rate of a contaminant to the site's soil. The frequency of sampling must be adequate to represent the soil. Environmental monitoring plans are established under 06-096 CMR ch. 419, Section 7(B)(15), during the licensing process.

(7) A plant available phosphorus concentration in excess of 100 lbs/acre, as determined by a Morgan-type extract (sodium or ammonium acetate at pH 4.8), or its equivalent.

B. Resumption. Following suspension of use under section 5(A) above, utilization activities may resume at the site when the generator submits written information to the Department and, based on that and other relevant information, the Department determines that continued utilization will meet the standards in 06-096 CMR ch. 400, sections 3 and 4, and the standards in sections 3 and 4 of this chapter.

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