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§ 17896.60. Pathogen Reduction.

14 CA ADC § 17896.60Barclays Official California Code of Regulations

Barclays California Code of Regulations
Title 14. Natural Resources
Division 7. Department of Resources Recycling and Recovery
Chapter 3.2. In-Vessel Digestion Operations and Facilities Regulatory Requirements
Article 6. Digestate Handling Standards
14 CCR § 17896.60
§ 17896.60. Pathogen Reduction.
Currentness
(a) Compost produced at an in-vessel digestion facility (pursuant to section 17896.57(a)(2)) shall not exceed the maximum acceptable pathogen concentrations described in subdivision (b)(1) of this section. Compost that contains any pathogens in amounts that exceed these pathogen reduction requirements shall be designated for additional processing, disposal, or other use as approved by local, state and federal agencies having appropriate jurisdiction. Test results of samples must be received by the operator prior to removing compost from the in-vessel digestion facility where it was produced.
(b) Operators of in-vessel digestion facilities that produce compost shall ensure that:
(1) The density of fecal coliform in compost produced at an in-vessel digestion facility shall be less than 1,000 Most Probable Number per gram of total solids (dry weight basis), and the density of Salmonella sp. bacteria in this compost shall be less than three (3) Most Probable Number per four (4) grams of total solids (dry weight basis). Test results of samples must be received by the operator prior to removing product from the site.
(2) At in-vessel digestion facilities using an enclosed or within-vessel composting process, active compost shall be maintained at a temperature of 55 degrees Celsius (131 degrees Fahrenheit) or higher for a pathogen reduction period of 3 days.
(A) Due to variations among enclosed and within-vessel composting system designs, including tunnels, the operator shall submit a system-specific temperature monitoring plan with the permit application to meet the requirements of subdivision (b)(2) of this section.
(3) If the facility uses a windrow composting process, active compost shall be maintained under aerobic conditions at a temperature of 55 degrees Celsius (131 degrees Fahrenheit) or higher for a pathogen reduction period of 15 days or longer. During the period when the compost is maintained at 55 degrees Celsius or higher, there shall be a minimum of five (5) turnings of the windrow.
(4) If the facility uses an aerated static pile composting process, all active compost shall be covered with 6 to 12 inches of insulating material, and the active compost shall be maintained at a temperature of 55 degrees Celsius (131 degrees Fahrenheit) or higher for a pathogen reduction period of 3 days.
(c) In-vessel digestion facilities that produce compost utilizing a windrow composting process or an aerated static pile composting process shall be monitored as follows to ensure that the standards in subdivision (b) of this section are met:
(1) Each day during the pathogen reduction period, at least one temperature reading shall be taken per every 150 feet of windrow, or fraction thereof, or for every 200 cubic-yards of active compost, or fraction thereof.
(2) Temperature measurements for pathogen reduction shall be measured as follows:
(A) Windrow composting processes and agitated bays shall be monitored twelve (12) to twenty-four (24) inches below the pile surface;
(B) Aerated static pile composting processes shall be monitored twelve (12) to eighteen (18) inches from the point where the insulation cover meets the active compost.
(d) Alternative methods of compliance to meet the requirements of this section may be approved by the EA if the EA determines that the alternative method will provide equivalent pathogen reduction.

Credits

Note: Authority cited: Sections 40502, 43020 and 43021, Public Resources Code. Reference: Sections 43020 and 43021, Public Resources Code.
History
1. New section filed 11-10-2015; operative 1-1-2016 (Register 2015, No. 46).
This database is current through 5/26/23 Register 2023, No. 21.
Cal. Admin. Code tit. 14, § 17896.60, 14 CA ADC § 17896.60
End of Document