324.11512f Type II landfill; revised engineering plans; compliance requirements; report.

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Sec. 11512f.

(1)The owner or operator of a type II landfill shall submit to the department revised engineering plans and reports required by this section in compliance with the following schedule:

(a)If, on the effective date of the amendatory act that added this section, the landfill has an active gas collection and control system and is subject to monthly wellhead monitoring pursuant to the new source performance standards under 40 CFR part 60, the owner or operator shall submit revised engineering plans that incorporate the approved new source performance standard plans within 90 days after the effective date of the amendatory act that added this section. The revised plans need not require upgrading of the initial active gas collection and control system in previously constructed areas unless it is necessary to correct surface emissions of methane at concentrations exceeding 500 parts per million above background that cannot be corrected within 1 quarterly monitoring period by following the procedures of 40 CFR 60.765(c)(4)(i) to (iv), to correct a nuisance odor violation, or to maintain vacuum requirements at the wellhead located farthest from the blower. The design requirements of section 11512b(2) apply to lateral extensions, lateral expansions, and all new units at the facility.

(b)If, on the effective date of the amendatory act that added this section, the landfill has an active gas collection and control system and is not subject to monthly wellhead monitoring pursuant to the new source performance standards under 40 CFR part 60, the owner or operator shall submit revised plans within 1 year after the effective date of the amendatory act that added this section. The revised plans need not require upgrading of the initial system in previously constructed areas unless it is necessary to correct surface emissions exceeding 500 parts per million of methane above background that cannot be corrected within 1 quarterly monitoring period by following the procedures of 40 CFR 60.765(c)(4)(i) to (iv), to correct a nuisance odor violation, or to maintain vacuum requirements at the well located furthest from the blower. The design requirements of section 11512b(2) apply to lateral extensions and all new units at the landfill.

(c)If, on the effective date of the amendatory act that added this section, the landfill does not have an active gas collection and control system, the owner or operator shall submit revised plans for an active gas collection and control system within 1 year after detecting surface methane emissions at concentrations exceeding 500 parts per million above background that cannot be corrected within 1 quarterly monitoring period by following the procedures of 40 CFR 60.765(c)(4)(i) to

(iv)or within 1 year after the department documents a nuisance odor violation, unless an extension of the deadline is approved by the department. The revised plans need not include upgrading of the initial system in all previously constructed areas. The revised plans shall address the areas causing the surface emissions exceedance or nuisance odor violation plus all future lateral extensions at the landfill. The design requirements of section 11512b(2) apply to the proposed active gas collection and control system. Construction of the system shall be completed within 180 days after the department approves the revised engineering plans, unless an extension is approved by the department.

(d)If the landfill is a new unit or lateral expansion, the owner or operator must submit engineering plans and reports for an active gas collection and control system before the department issues a solid waste disposal area construction permit.

(2)The design plans and engineering reports for a type II landfill required by part 115 shall be sufficient to demonstrate compliance with 40 CFR 60.759. The engineering reports shall include a monitoring plan that is sufficient to demonstrate compliance with section 11512d. The department shall incorporate the design plans and engineering reports into the landfill's solid waste disposal area construction permit and solid waste disposal area operating license.

(3)Within 45 days after the end of each state fiscal year, the owner or operator of a type II landfill shall update engineering plans to show the as-built location of all active gas collection and control system components, unless no changes have been made. The update shall include plan views and details for any changes proposed but not previously approved. The plan views shall include proposed wells and collection headers to collect landfill gas from the landfill in future final stages as well as as-built locations for all components above grade and currently functioning below grade.

(4)The owner or operator of a type II landfill shall submit plans to the department before beginning an active gas collection and control system expansion project. Repairs, changes, or installations are not considered to be an expansion project if they are minor and necessary for proper maintenance of the existing active gas collection and control system. The plans shall identify gas extraction well locations, include a schedule of extraction well depths, and identify gas well pump locations, compressed air and pump force main locations, header and lateral vacuum pipe locations, condensate drip leg and sump locations, and any other relevant infrastructure, as well as construction details for these items. If, during construction, conditions require that any of the approved or proposed extraction well locations deviate more than 50 feet from the proposed location or more than 25% from the proposed depth, the owner or operator shall submit to the department 1 of the following:

(a)A statement from a licensed professional engineer that the gas wells installed will provide adequate control of landfill gas emissions and meet the intent of the design.

(b)A schedule for installing additional gas collectors to meet the design requirements included with the approved engineering plans.

(5)Within 180 days after completion of construction of portions of the active gas collection and control system, the owner or operator shall submit to the department a documentation report by a construction quality assurance officer or other department-approved designee of the landfill owner or operator that the construction complies with part 115 and the engineering plans approved by the department. All of the following information shall accompany the documentation report:

(a)A daily activity log, containing all of the information required by R 299.4921(3) of the MAC.

(b)Landfill gas well logs that include all of the following:

(i)Observations of the depth, composition, degree of decay, temperature, and moisture content of the waste.

(ii)Details of the construction of the well including borehole size and depth, pipe size and type, perforated length, aggregates utilized, soils utilized, and the location and types of seals utilized.

(c)An as-built engineering plan view of the active gas collection and control system with the location of existing wells and headers and the location of newly installed wells, headers, and other active gas collection and control system infrastructure.

History: Add. 2022, Act 245 , Eff. Mar. 29, 2023

Popular Name: Act 451

Popular Name: NREPA

Popular Name: Solid Waste Act