(e) Decomposition gases generated within a landfill must be controlled to prevent safety issues and off-site odors. Measures to control decomposition gases must be undertaken in accordance with the following requirements:
- (1) in landfills which receive putrescible waste, horizontal landfill gas lines must be installed in the waste mass at a horizontal spacing of not more than 100 feet and a vertical spacing of not more than 20 feet and shall terminate at least 100 feet from the exterior slope of the waste mass;
(2) the concentration of methane and other explosive gases must not exceed 25 percent of the lower explosive limit for gases:
- (i) at or beyond the property boundary; or
- (ii) within on-site structures excluding gas management or recovery system components;
- (3) an ongoing gas monitoring program must be implemented throughout the active life, post-closure care period, and custodial care period to ensure that the requirements of paragraph (2) of this subdivision are met. The type and frequency of monitoring must be approved by the department and be based on the following factors: soil conditions; the hydrogeologic conditions surrounding the disposal area; the hydraulic conditions surrounding the disposal site; and the location of any man made structures and property boundaries. Monitoring must be conducted at least quarterly;
- (4) monitoring must be performed at 100-foot maximum intervals where temporary sampling locations are used, or at 400-foot maximum intervals where permanent gas monitoring wells are constructed. Initial monitoring must be performed when atmospheric pressure and wind velocity are low and when the ground surface has been wet or frozen for several days. Monitoring must be done below the wet or frozen zone if present;
(5) upon detection of methane or other explosive gas levels exceeding the limits specified in paragraph (2) of this subdivision, the landfill operator must immediately take action to avoid hazards to public health and the environment, and must:
- (i) within 24 hours of detection, notify the department;
- (ii) within seven days of detection, submit to the department the methane or other explosive gas levels detected and provide a description of the steps taken to protect health, safety, and property; and
(iii) within 30 days of detection, submit a plan and a schedule to remediate any continuing methane or other explosive gas releases. The plan must describe the nature and extent of the problem and the proposed remedy, and be implemented upon department approval.
(f) Leachate management.
- (1) Leachate must be managed in accordance with the department-approved leachate management plan.
- (2) Leachate depth (head) above the primary liner system may not exceed 12 inches, except during and within a seven day period following storm events and in designed sump areas. Both the primary and secondary leachate collection and removal systems must be operated in a free-draining manner so as not to cause a leachate head buildup above the respective liner system.
- (3) All run off which either emanates from active portions of the landfill disposal areas covered only with alternative operating cover which was generated from waste or has come into contact with waste or leachate must be considered leachate and be appropriately managed by the landfill's leachate collection and removal system.
- (4) Leachate must be monitored as required by section 363-4.6(f)(8)(iii) of this Part.
- (5) Stormwater within the secondary containment area of the leachate storage tank system must be removed so as to maintain a minimum of 100 percent containment capacity for the largest storage tank within the secondary containment area.
- (6) Stormwater that collects within the secondary containment system of the leachate storage tank system must be controlled by a manually operated pump or a gravity drain pipe with a manually controlled valve. If a gravity drain pipe is used, all valves must be in a closed position and locked except when the operator is in the process of draining uncontaminated stormwater.
(7) Allowable leakage rate. If flow within the secondary leachate collection and removal system exceeds 20 gallons per acre per day (based on a rolling 30 day average), the owner or operator must implement the following procedures, at a minimum:
- (i) notify the department within 72 hours from the time of the exceedance;
- (ii) sample and analyze secondary leachate for baseline parameters;
- (iii) submit a preliminary written assessment to the department within 14 days of the exceedance, which must include any short term actions that have either been taken or are planned, a description of the amount of liquid observed, and the suspected cause of the excessive leakage rate exhibited, considering precipitation events and the possible location, size and cause of potential leaks;
- (iv) investigate and determine, to the extent practicable, the location, size and cause of the leaks;
- (v) determine whether waste receipt should cease or be curtailed, whether any waste should be removed from the cell for inspection, repairs, or controls, and whether the cell should be closed;
- (vi) determine any other short term or long-term actions to be taken to reduce the leakage rate;
- (vii) within 30 days after the notification that the allowable leakage rate has been exceeded, submit to the department the results of the determinations specified in subparagraphs (ii), (iv), (v), and (vi) of this paragraph, the results of the actions taken, and actions planned. Monthly thereafter, as long as the flow rate in the secondary leachate collection and removal system exceeds the allowable leakage rate, a report must be submitted to the department summarizing the results of any remedial actions taken and actions planned in order to reduce the leakage to an allowable level; and
(viii) take other measures as the department may require based on the significance of the leakage, including but not limited to cell or facility closure, if the leakage rate cannot be reduced to less than 20 gallons per acre per day within six months.
(g) Maintenance for primary and secondary leachate collection and removal systems.
- (1) The primary leachate collection and removal system must be cleaned annually and maintained in good operating condition. The owner or operator may request that the department waive the cleaning requirement based on the results of the video inspection in paragraph (2) of this subdivision. The department will not grant waivers in consecutive years.
- (2) Video inspection of any primary leachate collection and removal system and secondary leachate collection and removal system constructed in accordance with this Part must be performed at least biennially.
- (3) Monitoring of secondary leachate collection and removal system flowrates must be conducted and recorded daily when the facility is operating.
(4) An operational log for recording monthly total leachate generation amounts and a maintenance log for documenting compliance with paragraphs (1)-(3) of this subdivision must be kept at the site and included in the landfill's annual report.
(h) Leachate recirculation.
(1) Leachate recirculation is only allowed in cells constructed with double composite liners and in which active gas collection and destruction is performed. If allowed, the following conditions must be met.
- (i) A leachate recirculation system must terminate no closer than 100 feet from the exterior slope of the waste mass.
- (ii) Leachate recirculation rates must be established and primary leachate flowrates must be monitored to ensure that the receiving waste mass does not become saturated.
- (iii) The landfill must demonstrate that the allowable leakage rate measured in the secondary leachate collection and removal system has not been exceeded during the previous 12 months.
(2) During leachate recirculation, leachate must not be introduced directly onto operating cover.
(i) Moisture content of waste.
Wastes accepted for disposal must exhibit no free liquids and must contain a minimum of 20 percent solids. All dredged materials and sludges other than sewage sludge accepted for disposal must be dewatered to 20 percent or more solids and exhibit no free liquid as defined by SW-846 Method 9095 - Paint Filter Liquids Test, incorporated by reference in section 360.3 of this Title.
(j) Biosolids.
All biosolids accepted for disposal must be stabilized, dewatered to 20 percent solids, and exhibit no free liquid as defined by SW-846 Method 9095 - Paint Filter Liquids Test, incorporated by reference in section 360.3 of this Title. Biosolids that are disposed of must meet the following stabilization criteria, except if it can be demonstrated to the department’s satisfaction that the equivalent level of odor reduction can be achieved through alternative methods:
- (1) The biosolids must be either digested or lime stabilized. If lime is used, sufficient lime must be added to raise the pH of the sludge to 12 for at least 30 minutes. The level of treatment must be adequate to reasonably prevent nuisance conditions.
(2) Biosolids cannot be accepted for disposal from a sewage treatment plant that has a biosolids treatment process other than digestion or lime stabilization unless one of the following criteria is satisfied:
- (i) the mass of volatile solids in the biosolids has been reduced by a minimum of 38 percent;
- (ii) tor biosolids treated in an aerobic process, the specific oxygen uptake rate (SOUR) is equal to or less than 1.5 milligrams of oxygen per hour per gram of total solids (dry weight basis), at a temperature of 20° C;
- (iii) the biosolids are composted for a minimum of 14 days. Throughout that treatment time, the temperature of the biosolids must remain higher than 40° C, and the average temperature of the biosolids must be higher than 45° C;
(iv) the percent solids of the biosolids are equal to or greater than 75 percent.
(k) Friable asbestos-containing waste disposal.
Friable asbestos-containing waste or material contaminated with friable asbestos-containing waste may only be disposed of at a landfill if the following measures and precautions are taken:
- (1) the landfill must have a protocol in place as part of their waste control plan describing procedures for receipt of friable asbestos-containing waste and placement in the landfill;
- (2) the area designated for disposal of friable asbestos-containing waste must be recorded on an operations site plan so that precautions can be taken to properly handle the friable asbestos-containing waste in the event of future construction or regrading in this area;
- (3) the friable asbestos-containing waste must either be placed into a pre-dug trench in the existing waste or at the bottom of the working face. The friable asbestos-containing waste must be backfilled or covered with at least 3 feet of waste or 18 inches of soil before compaction to isolate the friable asbestos-containing waste; and
(4) friable asbestos-containing waste must be prevented from becoming airborne or coming into contact with landfill equipment.
(l) Non-friable asbestos-containing waste disposal.
Non-friable asbestos-containing waste may be disposed of at a landfill, provided it is not reduced in size, crushed, or processed in any manner before being placed under operating cover or another lift of waste.
(m) Inspection for unauthorized waste.
At a minimum frequency of once per week, the owner or operator must select a waste collection vehicle at random and unload its waste for a detailed inspection for unauthorized wastes. A record of the results of this inspection must be kept on the premises and be available for department review.
(n) Weight scales.
Any landfill that accepts at least 20 tons of waste per day averaged over the operating days for a calendar year must install and utilize a scale. Landfills that accept less than 20 tons of waste per day must utilize a department-approved alternate means of quantifying the weight of waste received.
(o) Disposal prohibitions.
Disposal of the following is prohibited:
- (1) waste tires, except solid rubber tires (non-pneumatic);
- (2) lead acid batteries;
- (3) source-separated recyclables, source-separated HHW, source-separated electronic waste, source-separated rechargeable batteries, source-separated mercury-containing products, and other source-separated items that are subject to legislatively enacted product stewardship programs in New York State;
- (4) mercury-added consumer products as defined in ECL section 27-2101 or mercury-added thermostats as defined in ECL section 27-2901;
- (5) bulk liquids. Liquid containers that are generated from households and that contain five gallons or less of liquids are not considered bulk liquids;
- (6) hazardous waste as defined in Part 371 of this Title;
- (7) low-level radioactive waste, processed and concentrated naturally occurring radioactive material (NORM) waste, or nuclear accelerator-produced radioactive material (NARM) waste as defined in Parts 380, 382, and 383 of this Title that are required by Parts 380 and 383 of this Title to be disposed of at a Part 383 of this Title permitted facility;
- (8) wastes, excluding firebrick, which exhibits a concentration greater than 25 pCi/g of radium-226;
- (9) fluids produced from an oil or gas production well, including flowback water and production brine; and
- (10) any other materials prohibited by law.