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51020 Federal Register lot. 56, No. 198 /Wednesday, Octobet 1991 /Rules and Regulations <br /> of mass movement include, but are not (4) Notification of State Director of limit for methane at the facility property <br /> limited to, landslides, avalanches, debris authorized States under Subtitle C of boundary. <br /> slides and flows, soil fluclion, block RCRA or the EPA Regional (b) Owners or operators of all MSWLF <br /> sliding, and rock fall. Administrator if in an unauthorized units must implement a routine methane <br /> (5) Korsl terranes means areas where State if a regulated hazardous waste or monitoring program to ensure that the <br /> karst topography, with its characteristic PCH waste is discovered at the facility. standards of paragraph (a) of this <br /> <br /> 1 surface and subterranean features, is (b) For purposes of this section, section are met. <br /> developed as the result of dissolution of regulated hazardous waste means a (i] The type and frequency of <br /> limestone, dolomite, or other soluble solid waste that is a hazardous waste, <br /> fl monitoring must be determined based <br /> rock. Characteristic phyaiographic as defined in 40 CFR 281.3, that is not on the following factors: <br /> features present in karat terranes excluded from regulation es a hazardous <br /> ~ include, but ere not limited to, sinkholes, waste under 40 CFR 281.4(b) or was not (i) Soil conditions; <br /> sinking streams, caves, large springs, generated by a conditionally exempt (ii) The hydrogeologic conditions <br /> end blind valleys. small quantity generator ae defined in surrounding the facility; <br /> § 258.76 Closuro of sxlating munlelpal § 261.5 of this chapter. (iii) The hydraulic conditions <br /> solid waste landfill unlh. § 258.21 Cover material requlremanta. surrounding the facility; and <br /> I (a) Existing MSWLF unite that cannot (iv) The location of facility structures <br /> make the demonstration specified m (a) Except ea provided in paragraph and property boundaries. <br /> (b) of this section, the owners or (2) The minimum frequency of <br /> § 258.30(aJ, pertaining to airports, operators of all MSWLF units must <br /> § 258.11(a), pertaining to floodplains, or cover disposed solid waste with six monitoring shall be quarterly. <br /> -i § 258.15(a), pertaining to unstable areas, inches of earthen material at the end of (c) If methane gas levels exceeding <br /> must close by October 9,1998, in each operating day, or at more frequent the limits specified fr paragraph (a) of <br /> accordance with § 258.80 of this part this section are detected, the owner or <br /> intervals if necessary, to control disease <br /> and conduct post-closure activities in vectors, fires, odors, blowing litter, end operator must: <br /> accordance with 4 258.61 of this part. scavenging. (I) Immediately take al] necessary <br /> (b) The deadline for closure required (b) Alternative materials of an steps to ensure protection of human <br /> by paragraph (a) of this section may be alternative thickness (other than a[ least health and notify the State Duector, <br /> extended up to two years if the owner or six inches of earthen material) maybe (2) Within seven days of detection. <br /> operator demonstrates to the Director of approved by the Director of an approved place in the operating record the <br /> ~ an approved State that: State ff the owner or operator methane gas levels detected and a <br /> ~ (1) There is ao available alternative demonafratea that the alternative description of the steps taken to protect <br /> disposal capacity; material end thickness control disease human health; and <br /> (2) There is no immediate threat fo vectors, fires, odors, blowing litter, and (3j Within 80 days of detection, <br /> human health and the environment. scave without resent' <br /> nging p mg a threat implement a remediation plan for the <br /> Note to Subpart B: Ownere or operators of to human health and the environment. methane gas releases, place a copy of <br /> MSWLFa should be aware that a State in (c) The Director of an approved State the plan in the operating record, and <br /> which their landfill is located or is to be may grant a temporary waiver from the notify the State Director that the plan <br /> located, may have adopted a state wellhead requirement of paragraph (a) and (b] of has been implemented. The plan shall <br /> protection program N accordance with <br /> section 14ze of the Sate thinking Water Act. this section if the owner or operator describe the nature and extent of the <br /> Such state wellhead protection programs may demonstrates that there are extreme problem and the proposed remedy. <br /> impose additional requirements on owners or seasonal climatic conditions that make (4) The Director of an approved State <br /> operators of MSWLFa than those set forth In meeting such requirements impractical. may establish alternative schedules for <br /> ' Ihia part. <br /> ~ § 258.22 Disease vector control. demonstrating compliance with <br /> § 258.17-258.19 1Reservedl (a) Owners or operators of all MSWLF Paragraphs (c) (2) and (3) of this section. <br /> ~ Subpart C-Operating Criteria units must prevent or control on-site (d) For purposes of this section, lower <br /> i populations of disease vectors using explosive limit means the lowest <br /> § 258.20 Proeedurea for axbluding the techniques appropriate for the percent by volume of a mixture of <br /> ' receipt of hazardous waste. protection of human health end the explosive gases in air that will <br /> I (a) Owners or operators of all MSWLF environment. propagate a flame at 2~ C and <br /> atmospheric pressure. <br /> units must implement a program at the (b) For purposes of this section, <br /> facility for detecting and preventing the disease vectors means any rodents, g 258.za Alr criteria. <br /> disposal of regulated hazardous wastes flies, mosquitoes, or other animals. (a) Owners or operators of all <br /> as defined in part 281 of this chapter and including insects, capable of <br /> polychlorinated biphenyla (PCB) wastes transmitting disease to humans. R15WLFs must ensure that the units not <br /> ~ as defined in part 781 of this chapter. violate any applicable requirements <br /> This program must include, at a § 258.23 Explosive gases control. developed under a State Implementation <br /> - minimum: (a] Owrrers or oparatots of all MSWLF Plan (SIP) approved or promulgated by <br /> (1) Random inspections of incoming unite moat ensure that: the Administrator pursuant to section <br /> loads unless the owner or operator takes (1) The concentration of methane gas 110 of the Clean Air Act, as amended. <br /> +i ether steps to ensure that incoming generated by the facility does not (b) Open burning of solid waste, <br /> i loads do not contain regulated exceed 25 percent of the lower explosive. except for the infrequent burning of <br /> hazardous wastes or PCBlwastes; limit for methane in facility structures agricultural wastes, silvicultural wastes. <br /> (2J Records of any inspections; (excluding gas control or recovery landclearing debris, diseased trees, or <br /> (3) Training of facility personnel to system components); and debris from emergency cleanup <br /> - - recognize regulated hazardous waste (2) The concentration of methane gas operations, is prohibited at all MSWLF <br /> and PCB wastes; and does not exceed the lower explosive units. <br /> <br />