Solid Waste Management Facility Permit Mississippi Topsoils Inc. Action: PER005

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1 DRAFT DRAFT DRAFT DRAFT DRAFT DRAFT DRAFT Solid Waste Management Facility Permit Permit: SW-557 Mississippi Topsoils Inc. Action: PER005 In accordance with Minn. Stat. chs. 115, 115A, and 116, and Minn. R. chs. 7000, 7001, and 7035, the Minnesota Pollution Control Agency (MPCA) hereby issues this permit and authorizes the permittee listed on the following page to construct and operate the Mississippi Topsoils, Inc., SW-557 under the conditions set forth in this permit. The facility consists of 11 acres located in: Township 123 North, Range 30 West, Section 13, Stearns County, in the MPCA Brainerd Region. The facility includes the following waste activity area: Solid Waste Composting Area MC001 The determination to issue this permit is discretionary with the MPCA and was made subsequent to MPCA staff review of the permit application. The term commissioner, as used in this permit, refers to the MPCA Commissioner or MPCA personnel who have been delegated explicit authority by the commissioner. Other terms used in this permit are defined in Minnesota Statutes, the MPCA Solid Waste Management Rules, or specifically defined in this permit. Permit Issuance Date: Permit Expiration Date: Minnesota Pollution Control Agency Mike Mondloch Supervisor, Solid Waste Permitting Unit Prevention & Solid Waste Management Section Resource Management & Assistance Division

2 DRAFT DRAFT DRAFT DRAFT DRAFT DRAFT DRAFT Solid Waste Management Facility Permit Permit: SW-557 Mississippi Topsoils Inc. Action: PER005 The following permittee is authorized to construct and operate the Mississippi Topsoils, Inc., SW-557 under the conditions set forth in this permit. Permittee Activity Owner: Mississippi Topsoils, Inc. Permittee Land Owner: Mathias Miller Permittee Operator: Mississippi Topsoils, Inc. Address: Sauk River Road P.O. Box 444 Cold Spring, MN Address: Beachside Road Paynesville, MN Address: Sauk River Road P.O. Box 444 Cold Spring, MN

3 General Definitions "Permittee" means the landowner, facility owner(s), and facility operator(s) "Facility" has the meaning given in Minn. R , subp "Waste Activity" means the storage, processing, transfer, utilization, treatment, or disposal of solid waste and waste by-products "Waste Activity Area" means the land, structures, monitoring devices, and other appurtenances and improvements on the land associated with a waste activity "Unadulterated wood" means wood that does not contain contaminants present as a result of manufacturing or use of the wood. Examples of contaminants include paints, varnishes, stains, glues, resins, or chemicals used to prevent rotting "Compost Facility" has the meaning given in Minn. R , subp "NaturTech Composting System" means an in-vessel, containerized composting system developed and patented by Renewable Carbon Management, LLC. Waste Activities The facility waste activities authorized by this permit are limited to those activities described in the Waste Capacity Table of this permit. Location The facility authorized by this permit is located just east of the city of Cold Spring on Highway 23, then north on Sauk River Road. The facility processing activities are on a 4.8 acre parcel and compost storage is located on an adjoining 6.55 acre parcel in the NW 1/4 of the SW 1/4 of Section 13, T123N, R30W in Wakefield Township, Stearns County, Minnesota. The address of the facility is: Mississippi Topsoils, Inc Sauk River Road P.O. Box 444 Cold Spring, Minnesota Facility History Page 1 of 15

4 General Mississippi Topsoils, Inc. (Facility) began operations after receiving their first MPCA Solid Waste Permit, SW-557, on August 16, The Facility is located adjacent to GNP Company (formerly Gold'n Plump Poultry Company) and produces compost soil amendments from the organic by-products produced by the company. During the first permit term, the Facility received between 2,204 and 2,626 tons/year of organic by-products and between 1,148 and 1,947 tons/year of compost additives. Compost additives, primarily bulking agents, have included shredded pallets, brush, sawdust, leaves, grass and trees. For the final three years of the permit term, the Facility produced an annual average 1,500 cubic yards of Class I compost The 2004 permit authorized a capacity for this Facility of 26 tons per day or 9,360 tons/year. During the five year permit term the Facility received an average of 2,800 tons/year of organic by-products and 2,200 tons/year of compost additives to produce an average of 1,700 cubic yards per year of Class 1 compost The March 2012 minor permit modification approved acceptance and composting of dewatered anaerobically digested manure (digestate). The digestate was successfully composted, analyzed and distributed during a 2010 demonstration project. The minor permit modification does not increase the Facility permitted capacity. Facility Description The Facility authorized by this permit is a source separated solid waste composting facility. The raw materials include organic by-products from the GNP Company, yard waste from the surrounding communities, and unadulterated wood, typically pallets from local mills and hardware manufacturers. The by-products are loaded into an enclosed mixing vessel at an indoor location within the GNP Company and mixed with wood chips. The mixture is then dumped into the bunkers before being loaded into composting vessels. The composting Facility utilizes the NaturTech Composting System which starts with 14 to 21 days in NaturTech Composting System vessels. This is followed by 21 to 28 days of curing in a building fitted with an air ventilation system. Twelve, 40 cubic yard, insulated NaturTech vessels with tight fitting lids serve as the active composting vessels. Each vessel is capable of holding approximately 30 tons of material. An automated computer process controls temperatures via aeration. All exhaust air, including air from the curing building, is forced through a biofilter, consisting of 3 vessels without lids containing mature compost, to reduce odors. Leachate that is generated is either brought to the head of the GNP company wastewater treatment plant or recycled back into the compost process. Page 2 of 15

5 General The mature compost is stored in windrows prior to screening. Mature compost storage is located either on the original 4.8 acre compost processing parcel or on the neighboring 6.55 acre parcel purchased in Screening is performed intermittently to mature compost for the removal of heavy inert materials, oversized particles and a medium fraction. The large particles primarily consist of wood chips that are reused in a subsequent batch of compost. The final product is sold in bag or in bulk and may be blended with other products like peat, sand, pine bark, and/or perlite before sale to the general public or to garden centers, greenhouses and/or nurseries. Dewatered and anaerobically digested manure (digestate) is composted and cured in the New Building, as identified on the facility plans. The total quantity of digestate and digestate compost combined on-site at any time shall not exceed 500 cubic yards. The finished product will be registered with the Minnesota Department of Agriculture. The digestate shall be delivered to a lined pad and then transferred to the fully enclosed building where it is composted using the static aerated pile. After composting the material shall be pushed to a corner of the building for curing and storage until being analyzed and sold. This 2015 permit reissuance authorizes continued composting operations at the same permitted capacity and the installation of 4 additional in-vessel composting units, bringing the total to 16. The additional compost containers will be placed on a new concrete pad, adjacent to the current containers. An additional biofilter container will also be located on an extension of the concrete pad. With the new containers, the expected processing is projected to increase from 5,215 tons per year (2013 Annual Report) to approximately 6,715 tons per year. Approximately two thirds of the incoming waste is biosolids and one third is unadulterated wood grindings. The total finished compost production will increase from approximately 3,700 cubic yards to approximately 4,600 cubic yards. This permit reissuance does not include any changes to the Sampling Plan, Distribution Plan, Odor Control Plan (with exception to the added biofilter), or Contingency Action Plan. 1.2 Permit Documents Permit Application The permit application approved by this permit is signed and dated December 15, Engineering Documents Page 3 of 15

6 Permit Documents The approved Permit Reissuance Application documents were prepared by Liesch Associates, Inc. dated Jannuary 2004 including: 1. General Facility and Process Description 2. Description of Design and Physical Features 3. Surface Water Control Plan (as amended, dated August 2004) 4. Operations and Maintenance Manual 5. Contingency Action Plan 6. Closure Plan 7. Cost Estimates 8. Industrial Waste and HHW Management Plan 9. Construction Specifications 10. Compost Sampling Plan (as revised, dated revised August 2004) 11. Odor Control Plan 12. Figures 1 through Plan Sheet 1 dated September 2004 Addendum to permit application including legal description and drawing for 6.55 acre parcel to east of facility dated January 20, Minor Modification to Permit document, for the acceptance and processing of digested manure, which includes an operations plan, sampling and analysis plan, sampling QA/QC plan and a distribution plan dated March 2, Permit Reissuance Application two page letter signed and dated December 15, 2014 which includes design drawing for concrete pad expansion signed and dated October 13, Approved Plans The approved plans and engineering documents are incorporated into this permit. In addition, the approved version of all pending submittals required by this permit are incorporated into this permit. In all cases where the permit and the plans or submittal differ, the requirements of the permit shall govern over a condition in the plan or submittal. The approval by the commissioner of the plans and specifications shall not release the permittee from any present or subsequent requirements of statutes, rules, regulations, or ordinances. Revised Plans Any revised plans shall be submitted for approval by the commissioner. The permittee shall obtain approval from the commissioner on all revised engineering plans prior to construction of the affected portion of the facility. 1.3 Design and Construction Criteria Location Standards The permittee may not locate, establish, or construct a solid waste management facility in areas designated in Minn. R Page 4 of 15

7 Design and Construction Criteria Ground Water Quality, Surface Water Quality, Air Quality, and Soil Protection The permittee must locate, design, and construct the facility to prevent pollution of ground water and surface water, minimize the contamination of soils from solid waste, and maintain the facility in conformance with MPCA air pollution control rules in accordance with Minn. R Storage Standards A waste activity area where solid waste is stored must be designed in accordance with Minn. R except as provided in, subp. 1 and Minn. R , subp Storm Water Management System The permittee shall follow the approved storm water management plan for the facility with Best Management Practices to manage storm water discharge The permittee shall construct a storm water retention pond to the north of the compost and pallet storage areas as shown on Sheet 1 of 1, dated September The permittee shall manage stormwater from at least a 10-year, 24-hour storm event for the east parcel such that the stormwater infiltrates before reaching the Sauk River. Stormwater management for the east parcel could include maintaining an undisturbed vegetative buffer strip or, if it becomes necessary, building a stormwater infiltration pond Construction Plan The permittee must submit a construction plan to the commissioner for approval prior to construction if the construction plan proposes any major revisions to the approved design Construction Notification Unless the commissioner orders otherwise, the permittee shall notify appropriate MPCA staff at least ten (10) working days in advance of construction of the facility or any component thereof Construction Certification The permittee must submit a construction certification for approval by the commissioner in accordance with Minn. R A facility waste activity or any new design feature must not be placed into operation until the construction certification has been approved by the commissioner Alterations and Additions The permittee shall not make any major alterations or additions to the facility that would materially alter the manner in which waste is managed without first obtaining the written consent of the commissioner. 1.4 Operating and Maintenance Criteria Storage of Solid Waste The permittee shall also notify Stearns County Environmental Services of any alterations and additions. Page 5 of 15

8 Operating and Maintenance Criteria The permittee shall be responsible for the satisfactory storage of all solid waste accumulated at the facility in accordance with Minn. R and Minn. R Collection and Transportation of Solid Waste The permittee shall provide for the proper collection and transportation of solid waste in accordance with Minn. R Unacceptable Wastes The permittee must not accept specific wastes for treatment storage, processing, or disposal in accordance with Minn. R , subp Required Notices The permittee must notify the MPCA before transferring ownership or operation of a solid waste management facility during its operating life or during postclosure care period in accordance with Minn. R , subp Security The permittee must prevent unauthorized entry onto the facility in accordance with Minn. R , subp. 3. In addition, the permittee shall post a sign at the entrance of the facility and each waste activity area showing the facility name, MPCA permit number, hours of operation, the acceptable waste, and any other relevant information General Inspection The permittee must perform general inspections in accordance with Minn. R , subp Industrial Solid Waste Management Plan The permittee must manage industrial solid waste for each waste activity as specified in the approved plan in accordance with Minn. R , subp Household Hazardous Waste Management Plan The permittee must manage household hazardous waste for each waste activity as specified in the approved plan in accordance with Minn. R , subp Personnel Training Facility personnel must successfully complete a program of classroom instruction or on-the-job training to maintain compliance with Minn. R to and and this permit Storm Water Management System The permittee shall operate and maintain the storm water management system as specified in the approved plan for the facility with Best Management Practices to manage storm water discharge Ground Water Quality, Surface Water Quality, Air Quality, and Soil Protection The permittee must operate and maintain the facility to prevent pollution of ground water and surface water, minimize the contamination of soils from solid waste, and maintain the facility in conformance with MPCA air pollution control rules in accordance with Minn. R Page 6 of 15

9 Operating and Maintenance Criteria Operating Record The permittee must keep a written operating record at the facility in accordance with Minn. R Reporting Criteria An annual facility report for the preceding calendar year must be submitted to the Commissioner by March 1 of each year. The report must include the information identified in Minn. R , , subp. 5, item K and include summary evaluation reports and specific annual reporting requirements for each waste activity. Annual Facility Report The permittee shall submit an annual facility report for the preceding calendar year in accordance with Minn. R and subp. 5, item K. When required of a waste activity, the report must include summary evaluation reports and specific annual reporting requirements. The permittee shall submit the report to the commissioner according to the schedule in the Required Actions and Submittals Table(s) of this permit. The permittee shall submit a copy of the annual report to Stearns County Environmental Services. 1.6 Contingency Action Criteria Contingency Action Plan The permittee shall address all facility waste activities in the approved plan in accordance with Minn. R Emergency Preparedness and Prevention The permittee must design, construct, maintain, and operate a facility to minimize the possibility of a fire, explosion, or any release to air, land, or water of pollutants that threaten human health and the environment in accordance with Minn. R Emergency Procedures The permittee must take all reasonable containment measures during an emergency and submit a written report to the commissioner and Stearns County in accordance with Minn. R Closure Criteria Closure Plan The permittee must close the facility and each waste activity as specified in the approved plan in accordance with Minn. R Closure Procedures The permittee must perform closure in accordance with Minn. R The permittee must notify Stearns County Environmental Services of pending closure. Page 7 of 15

10 Closure Criteria The permittee must complete closure activities for the waste activity area in accordance with the closure plan within 180 days following the beginning of closure. 1.8 Financial Criteria Cost Estimates The permittee must keep the current cost estimates for each waste activity at the facility during the operating life in accordance with Minn. R , subp General Conditions Release The MPCA's issuance of a permit does not release the permittee from any liability, penalty, or duty imposed by Minnesota or federal statutes, or regulations, or local ordinances including, but not limited to, those promulgated pursuant to Minn. Stat. chs. 115, 115A, 116, 400 and 473. This permit shall be permissive only and shall not be construed as estopping or limiting any claims against the permittee, its agents, contractors, or assigns, nor as estopping or limiting any legal claims of the state against the permittee, its agents, contractors, or assigns for damages to state property, or for any violation of the terms of this permit Future Changes The MPCA's issuance of a permit does not prevent the future adoption by the MPCA of pollution control rules, standards, or enforcement orders more stringent than those now in existence and does not prevent the enforcement of these rules, standards, or enforcement orders against the permittee Rights and Privilege The permit does not convey a property right or an exclusive privilege Enforcement The MPCA's issuance of a permit does not obligate the MPCA to enforce local laws, rules or plans beyond that authorized by Minnesota Statutes Performance The permittee shall perform the actions or conduct the activity authorized by the permit in accordance with the submittals and specifications approved by the MPCA and in compliance with the conditions of the permit Operation and Maintenance Page 8 of 15

11 General Conditions The permittee shall at all times properly operate and maintain the facilities and systems of treatment and control and the appurtenances related to them which are installed or used by the permittee to achieve compliance with the conditions of the permit. Proper operation and maintenance includes effective performance, adequate funding, adequate operator staffing and training, and adequate laboratory and process controls, including appropriate quality assurance procedures. The permittee shall install and maintain appropriate backup or auxiliary facilities if they are necessary to achieve compliance with the conditions of the permit and, for all permits other than hazardous waste facility permits, if these backup or auxiliary facilities are technically and economically feasible. Honesty The permittee may not knowingly make a false or misleading statement, representation, or certification in a record, report, plan, or other document required to be submitted to the MPCA or the commissioner by the permit. The permittee shall immediately upon discovery report to the commissioner an error or omission in these records, reports, submittals or other documents. Timely Information Submittal The permittee shall, when requested by the commissioner, submit within a reasonable time the information and reports that are relevant to the control of pollution regarding the construction, modification, or operation of the facility covered by the permit or regarding the conduct of the activity covered by the permit. Access When authorized by Minn. Stat , 115B.17, subd. 4 and , and upon presentation of proper credentials, the MPCA, or an authorized employee or agent of the MPCA, shall be allowed by the permittee to enter at reasonable times upon the property of the permittee to examine and copy books, papers, records, or memoranda pertaining to the construction, modification, or operation of the facility covered by the permit or pertaining to the activity covered by the permit; and to conduct surveys and investigations, including sampling or monitoring, pertaining to the construction, modification, or operation of the facility covered by the permit or pertaining to the activity covered by the permit. Discovery of Noncompliance If the permittee discovers, through any means, including notification by the MPCA, that noncompliance with a condition of the permit has occurred, the permittee shall take all reasonable steps to minimize the adverse impacts on human health, public drinking water supplies, or the environment resulting from the noncompliance. Notification of Noncompliance Page 9 of 15

12 General Conditions If the permittee discovers that noncompliance with a condition of the permit has occurred which could endanger human health, public drinking water supplies, or the environment, the permittee shall, within 24 hours of the discovery of the noncompliance, orally notify the commissioner and Stearns County. Within five (5) days of the discovery of the noncompliance, the permittee shall submit to the commissioner and Stearns County a written description of the noncompliance; the cause of the noncompliance; the exact dates of the period of the noncompliance; if the noncompliance has not been corrected, the anticipated time it is expected to continue; and steps taken or planned to reduce, eliminate, and prevent recurrence of the noncompliance. Reporting of Noncompliance The permittee shall report noncompliance with the permit not reported in the Notification of Noncompliance subheading above by submitting the information listed in Notification of Noncompliance to the commissioner and Stearns County within 30 days of the discovery of the noncompliance. Alterations The permittee shall give advance notice to the commissioner and Stearns County as soon as possible of planned physical alterations or additions to the permitted facility or activity that may result in noncompliance with a Minnesota or federal pollution control statute or rule or condition of the permit. Transferability The permit is not transferable to any person without the express written approval of the MPCA after compliance with the requirements of Minn. R A person to whom the permit has been transferred shall comply with the conditions of the permit. Responsibility for Damage The permit authorizes the permittee to perform the activities described in the permit under the conditions of the permit. In issuing the permit, the state and MPCA assume no responsibility for damage to persons, property, or the environment caused by the activities of the permittee in the conduct of its actions, including those activities authorized, directed, or undertaken under the permit. To the extent the state and MPCA may be liable for the activities of its employees, that liability is explicitly limited to that provided in the Tort Claims Act, Minn. Stat Modifying or Revoking Permit The commissioner may commence proceedings to modify or revoke this permit during its terms if cause exists under Minn. R to Severability The provisions of this permit are severable. If any provision of this permit is held invalid, the remainder of this permit shall not be affected. Extensions Page 10 of 15

13 General Conditions The permittee may request an extension of the dates set forth in this permit including the submittal and monitoring dates. The request must include justification for requesting the extension of the date. Based on the justification, the commissioner may grant an extension. Term of Permit This permit is valid until the expiration date unless revoked or modified by the MPCA pursuant to Minn. R to To allow for adequate MPCA review time and to avoid possible termination of the permit at the time the permit expires, an application for reissuance of the permit must be submitted no later than 180 calendar days before the expiration date of the permit. Retention of Records The permittee must maintain records of all ground water monitoring data and ground water surface elevations for the active life of the facility and each waste activity and, for disposal activities, for the postclosure care period. The permittee must also maintain an operating record in accordance with Minn. R until closure of each waste activity at the facility. As-built Plans The permittee may not start treatment, storage, or disposal of solid waste in a new solid waste management facility or in a modified portion of an existing solid waste management facility until the commissioner has received a letter and as-built plans signed by the owner or operator and by an engineer registered in Minnesota certifying that the facility or modified portion of the facility has been constructed in compliance with the conditions of the permit. Construction Certification The permittee may not start treatment, storage, or disposal of solid waste in a new solid waste management facility or in a modified portion of an existing solid waste management facility until the commissioner has inspected the new facility or modified portion of the facility and has provided the owner or operator with a letter stating that the certification submitted is complete and approved. Financial Assurance If required by the commissioner, the permittee may not start treatment, storage, or disposal of solid waste in a new solid waste management facility or in a modified portion of an existing solid waste management facility until the commissioner has approved the financial assurance amount and instrument to be used for the facility in accordance with Minn. R to Page 11 of 15

14 2. SOLID WASTE COMPOSTING AREA MC Design and Construction Criteria Design Requirements The design of the compost area must include the requirements outlined in Minn. R , subp Surface Water Drainage Surface water drainage must be diverted around and away from the site operating area. A drainage control system, including changes in site topography, ditches, berms, sedimentation ponds, culverts, energy breaks, and erosion control measures must be designed, constructed, operated and maintained to manage the peak discharge from a 24-hour, 10-year storm event Liner Requirements The composting, curing, and storage areas for immature compost must be located on a liner capable of minimizing migration of waste and leachate into the subsurface soil, groundwater, and surface water, including at least a twelve foot apron in front of the warehouse and extending at least five feet on each side of the end warehouse doors. Compost must be removed on at least an annual basis. While the compost is removed, the liner must be inspected for deterioration, cracks, or other conditions that may result in leaks. If deterioration, cracks, or other conditions are identified as causing or capable of causing a leak, the permittee must notify the commissioner of the condition in writing within seven days after detecting the condition, and repair or replace the liner as outlined in the facility's contingency action plan Leachate Collection Liquid in contact with waste, immature compost, and residuals must be diverted to a leachate collection system. 2.2 Operating and Maintenance Criteria Operation Requirements The permittee must operate the compost area in accordance with Minn. R , subp Digested manure composting must be conducted in accordance with Minn. R Site Security All access points must be secured with a fence and gate or enclosed structures when the facility is not open for business or when no authorized personnel are on site. Within 180 days of permit issuance, the permittee shall construct a fence surrounding the East parcel of land that will be used for mature compost storage. Personnel Training Program Page 12 of 15

15 SOLID WASTE COMPOSTING AREA MC 001 Operating and Maintenance Criteria The permittee shall follow the approved personnel training program plan for the facility. The plan must address the items in Minn. R and the specific training needed to operate a compost area in compliance with Minn. R , subp. 5 to Operation and Maintenance Manual The permittee must follow the approved operation and maintenance manual in accordance with Minn. R , subp. 5 or for digested manure compost operations the approved operation and maintenance manual in accordance with Minn. R Waste Confinement All wastes delivered to the facility must be confined to a designated delivery area. All biosolids must be processed or removed from the facility within 24 hours to prevent nuisances such as odors, vector intrusion, and aesthetic degradation. Digested manure must be moved from the receiving area into the enclosed building within 24 hours of delivery. Yard waste and wood waste are not subject to the above storage time requirements Compost Residuals All compost residuals must be stored to prevent nuisances such as odors, vector intrusion, and aesthetic degradation. The residuals must be removed and properly disposed of on at least a weekly basis. For purposes of this permit, residuals do not include oversized materials that will be re-introduced to the composting sytsem Leachate Management Leachate generated at the facility may be recirculated into the compost, however, it must be added prior to initiating the process to further reduce pathogens (PFRP). Excess leachate will be disposed at the headworks of the neighboring GNP Company wastewater treatment plant Odor Control Odors from the facility must comply with any applicable agency odor rules. Odors emitted by the facility shall be managed in accordance with the approved Odor Control Plan prepared by the Permittee with input from the surrounding neighbors dated January 16, The facility shall use a biofilter to mechanically cleanse the air discharged from the composting vessels and curing warehouse. Investigation and management of odor related complaints at the facility shall be in accordance with the approved Odor Control Plan, including installation of additional odor control equipment as necessary Litter Control The permittee must cover or otherwise manage waste to control wind dispersion of any particulate matter Process to Further Reduce Pathogens (PFRP) Page 13 of 15

16 SOLID WASTE COMPOSTING AREA MC 001 Operating and Maintenance Criteria Compost must be produced by a process to further reduce pathogens (PFRP). The temperature and retention time for the material being composted must be monitored and recorded each working day. The process being used by the permittee to meet PFRP requirements consists of the enclosed vessel process. The enclosed vessel method for reducing pathogens will consist of a confined compost process involving mechanical aeration of compost in insulated containers. The retention time in the vessel shall be between 14 and 21 days with at least 72 hours where the temperature is maintained at 55 degrees Celsius or higher. A stabilization period of 21 to 28 days in a building shall follow the enclosed vessel retention period The PFRP method for the digested manure composting operations will be the static aerated pile with forced aeration. The compost temperature will be maintained at 55 degrees Celsius for a minimum of seven days within a building. After the PFRP process, the compost will be aerated for an additional week Either the density of fecal coliform in the PFRP-treated compost must be less than 1,000 most probable number per gram of total solids (dry weight basis), or the density of Salmonella sp. bacteria in the PFRP-treated compost must be less than three most probable number per four grams of total solids (dry weight basis) at the time the compost is applied to the land or at the time the compost is prepared for sale or giveaway in a bag or other container for application to the land. Compost Classification Compost produced must be classified according to the criteria in Minn. R , subp Class I compost cannot exceed the contaminant concentrations identified in Minn. R subp. 6, item A(1). Class I compost must not contain greater than three percent inert materials larger than or equal to four millimeters Class II compost consists of any compost that fails to meet the Class I standards and is below the cumulative and annual pollutant loading rates listed in Minn. R subp. 6, item B(1). Class II compost must not contain greater than four percent inert materials larger than or equal to four millimeters. Compost Distribution and End Use Compost distribution and end use must be consistent with the requirements outlined in Minn. R , subp Class I compost may be distributed for unrestricted use Class II compost may be distributed on a limited basis. All Class II compost distributed must be accompanied by an information sheet or label describing the compost product and its physical and chemical quality, and the information listed in Minn. R subp. 7, item C. Page 14 of 15

17 SOLID WASTE COMPOSTING AREA MC Contingency Action Criteria Inoperable Facility Notification If, for any reason, the facility becomes inoperable, the permittee must notify the commissioner and Stearns County within 48 hours and implement the contingency action plan. 2.4 Specific Conditions Compost Sampling and Testing Plan Compost maturity must be determined using test method TMECC G "Compost Maturity Index" as described in the U.S. Composting Council's document entitled, "Test Methods for the Examination of Composting and Compost". "Mature" means that: (1) the carbon:nitrogen ratio is less than or equal to 25, (2) a rating of "Mature" is obtained from conducting the selected Group A stability test method, and (3) a rating of "Mature" is obtained from conducting the selected Group B maturity test method Compost Maturity-Field Test The Solvita Test utilizes the California Compost Quality Council Maturity Index. For field testing, the compost shall be deemed mature if the Solvita Test produces a Maturity Index of at least five. For a mature compost, the Solvita Test result for the Ammonia Test shall be at least four and the Carbon Dioxide Test result shall be at least five. Compost shall be maintained on a lined pad until the compost is mature Metals Analysis Each batch of compost that has been determined to be mature must be analyzed for the metal contaminants listed in Minn. R subp. 6, item A(1) using U.S. EPA test methods in EPA SW Inert Material Content Each batch of mature compost must be tested to determine the amount of inert material. Inert content greater than four millimeters shall be determined by passing four replicates of 250 cc oven-dried (70 degrees Celsius) samples of compost through a four millimeter sieve. Material remaining on the sieve shall be visually inspected and inerts, including glass, metal, and plastic, shall be separated and weighed. The weight of the separated inert material divided by the weight of the total sample, multiplied by 100, shall be the percent dry weight of the inert material content Additional Analysis The mature compost must be analyzed for ph; moisture content; particle size; total nitrogen (N); available phosphate (P2O5); soluble potash (K2O); and soluble salt content. Page 15 of 15

18 Subject Item I.D. Required Actions and Submittals Table Facility: Mississippi Topsoils Inc Action: PER005 Total Facility Required Actions/Submittals Frequency/Due Date Action or Submittal Requirement TBD Annually Submit Permit Application Submit Annual Facility Report To allow for adequate MPCA review time and to avoid possible termination of the permit at the time the permit expires, an application for reissuance of the permit must be submitted to the Commissioner no later than 180 calendar days before the expiration date of the permit. An annual facility report for the preceding calendar year must be submitted to the Commissioner by March 1 of each year. The report must include the information identified in Minn. R , , subp. 5, item K and include summary evaluation reports and specific annual reporting requirements for each waste activity. Page 1 of 1

19 Waste Capacity Table WA ID Waste Activity Type Status Permitted Area Units Facility: Mississippi Topsoils Inc Action: PER005 Permitted Capacity Units Design Capacity Units Comments MC001 Solid Waste Composting Area Proposed 4.80 acres , tons/day tons/year , tons/day tons/year The 6.55 acre parcel East of the 4.8 acre parcel is only for storage and screening of mature compost and brush. No processing activities are allowed within the shoreland area. Page 1 of 1