1150.1 - 1 (Adopted April 5, 1985)(Amended April 10, 1998) (Amended March 17, 2000)(Amended April 1, 2011)

RULE 1150.1. CONTROL OF GASEOUS EMISSIONS FROM MUNI CIPAL

SOLID WASTE LANDFILLS

(a) Purpose The purpose of this rule is to reduce non-methane o rganic compounds (NMOC), volatile organic compound (VOC) and toxic air conta minant (TAC) emissions from Municipal Solid Waste (MSW) landfills to preve nt public nuisance and possible detriment to public health caused by expos ure to such emissions. This rule also reduces methane emissions, a greenhouse g as.

(b) Applicability This rule is applicable to any owner or operator of an active or inactive MSW
landfill.

(c) Definitions For the purpose of this rule, the following definit ions shall apply: (1) ACTIVE COLLECTION SYSTEM as defined by 40 CFR 6 0.751 means a gas collection system that uses gas mover equipment

. (2) ACTIVE MSW LANDFILL means a Municipal Solid Was te landfill that has received solid waste on or after November 8, 19 87. (3) BACKGROUND means the local ambient concentratio n of total organic compounds (TOC) measured as methane determined by h olding the instrument probe approximately 5 to 6 feet above th e landfill surface. (4) CLOSED MSW LANDFILL means a Municipal Solid Was te landfill that has ceased accepting solid waste for disposal and w as conducted in accordance with all applicable federal, state and l ocal statutes, regulations,
and ordinances in effect at the time of closure. (5) COMPONENT LEAK means the concentration of metha ne measured one half an inch or less from a component source that e xceeds 500 parts per million by volume (ppmv), other than non-repeatable , momentary readings. (6) COMPONENT means any equipment that is part of t he gas collection system or gas control system and that contains land fill gas including, butRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 2 not limited to, wells, pipes, flanges, fittings, va lves, flame arresters, knock-out drums, sampling pots, blowers, compressor s, or connectors. (7) CONSTRUCTION AND DEMOLITION WASTE means waste b uilding materials, packing and rubble resulting from constr uction, remodeling, repair and demolition operations on pavements, hous es, commercial building and other structures. (8) CONTINUOUS OPERATION means that the gas collect ion and gas control systems are operated continuously, the exis ting gas collection wells are operating under vacuum while maintaining landfill gas flow, and the collected landfill gas is processed by a gas co ntrol system 24 hours per day. (9) DESTRUCTION EFFICIENCY means a measure of the a bility of a gas control device to combust, transform, or otherwise prevent emissions of methane from entering the atmosphere. (10) ENCLOSED COMBUSTOR means an enclosed flare, st eam generating boiler, internal combustion engine or gas turbine. (11) ENERGY RECOVERY DEVICE means any combustion de vice that uses landfill gas to recover energy in the form of steam or electricity including, but not limited to gas turbines, internal combustio n engines, boilers, and boiler-to-steam turbine systems. (12) EXECUTIVE OFFICER means the Executive Officer or designee of the South Coast Air Quality Management District (13) GAS COLLECTION SYSTEM means any system that em ploys various gas collection wells and connected piping and mecha nical blowers, fans, pumps or compressors to create a pressure gradient and actively extract landfill gases. (14) GAS CONTROL DEVICE means any device used to di spose of or treat collected landfill gas including, but not limited t o, enclosed flares, open flares, internal combustion engines, boilers and bo iler-to-steam systems, process heaters, fuel cells, and gas turbines. (15) GAS CONTROL SYSTEM means any system that dispo ses of or treats collected landfill gas by one or more of the follow ing means: combustion, gas treatment for subsequent sale, or sale for proc essing offsite, including for transportation fuel and injection into natural gas pipelines. (16) INACTIVE MSW LANDFILL means a Municipal Solid Waste landfill that has not accepted solid waste after November 8, 1987 andRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 3 subsequently no further solid waste disposal activi ty has been conducted within the disposal facility. (17) LANDFILL GAS means any untreated, raw gas deri ved through a natural process from the decomposition of organic waste dep osited in a MSW landfill from the evolution of volatile species in the waste, or from
chemical reactions of substances in the waste. (18) LANDFILL SURFACE means the area of the landfil l under which decomposable solid waste has been placed, excluding the working face. (19) MUNICIPAL SOLID WASTE or MSW LANDFILL means an entire disposal facility in a contiguous geographical spac e where solid waste is placed in or on land. An MSW landfill may be activ e, inactive or closed. (20) NON-DECOMPOSABLE SOLID WASTE means materials t hat do not degrade biologically to form landfill gases. Examp les include, but are not limited to, earth, rock, concrete, asphalt, paving fragments, clay products, inert slag, asbestos-containing waste, and demoliti on material containing minor amounts (less than 10 percent by volume) of w ood and metals.
Materials that do not meet this definition are cons idered decomposable
solid waste. (21) NON-REPEATABLE MOMENTARY READINGS means indica tions of the presence of methane, total organic compounds, o r toxic air contaminants, which persist for less than five seco nds and do not recur when the sampling probe of a portable gas detector is placed in the same
location. (22) OPERATOR means the person: (A) Operating the MSW landfill, or (B) Operating the MSW landfill gas collection or ga s control system. (23) OWNER means the person holding title to the pr operty. (24) PASSIVE COLLECTION SYSTEM means a gas collecti on system that solely uses positive pressure within the landfill t o move the gas rather than using gas mover equipment, or uses the natural pres sure gradient established between the encapsulated waste and the atmosphere to move the gas through the collection system. (25) PERIMETER means the outer boundary of the enti re waste disposal
property. (26) PROFESSIONAL ENGINEER means an engineer holdin g a valid certificate issued by the State of California Board of Registration forRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 4 Professional Engineers and Land Surveyors or a stat e offering reciprocity
with California. (27) SOLID WASTE means all decomposable and non-dec omposable solid, semisolid and liquid wastes including garbage, tras h, refuse, paper, rubbish, ashes, industrial waste, manure, vegetable or animal solid and semisolid waste. Solid waste also includes any mat erial meeting the definition of solid waste in 40 CFR 60.751 (as last amended by 64 Fed. Reg. 9262, Feb. 24, 1999), as incorporated by refe rence herein. (28) SUBSURFACE GAS MIGRATION means underground lan dfill gases that are detected at any point on the perimeter, pu rsuant to California Code of Regulation Title 27, section 20921. (29) TOXIC AIR CONTAMINANT (TAC) means an air conta minant which has been identified as a hazardous air pollutant pu rsuant to Section 7412 of Title 42 of the United States Code; or has been identified as a TAC by the Air Resources Board pursuant to Health and Safe ty Code Section 39655 through 39662, or which may cause or contribu te to an increase in mortality or an increase in serious illness, or pot ential hazard to human
health. (30) WASTE IN PLACE means the total amount of solid waste placed in an MSW landfill, estimated in tons. The refuse densit y is assumed to be 1,300 pounds per cubic yard and the decomposable fr action is assumed to be 70 percent by weight. (31) WELL RAISING means a MSW landfill activity whe re an existing gas collection well is temporarily disconnected from a vacuum source; and the non-perforated pipe attached to the well is extende d vertically to allow the addition of a new layer of solid waste or the final cover or is extended horizontally to allow extension of an existing laye r of solid waste or cover material. The extended pipe is then reconnected to vacuum source in order to continue collecting gases from that well. (32) WORKING FACE means that open area where solid waste is deposited daily and compacted with landfill equipment.

(d) Active Landfill Design and Operation Requiremen ts The MSW landfill owner or operator shall comply wit h the provisions of paragraphs (d)(1) through (d)(20):Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 5 (1) If a valid Permit to Construct or Permit to Ope rate for the gas collection and gas control systems that meets the requirements of subparagraphs (d)(1)(A) through (d)(1)(C) has not been issued by the District, the owner or operator shall submit a site-specific gas collec tion and gas control systems design plan. The design plan shall be prep ared by a Professional Engineer and submitted to the Executive Officer wit h applications for Permits to Construct or Permits to Operate for the gas collection and gas control systems. The Executive Officer shall revie w the gas collection and gas control systems design and either approve it, d isapprove it, or request that additional information be submitted. An appro ved design plan may be revised and submitted for review and approval by the Executive Officer. Revisions shall be prepared by a Professi onal Engineer. (A) The gas collection and gas control systems shal l be designed to handle the maximum expected gas flow rate from the entire area of the MSW landfill that requires control, to minimize migration of subsurface gas to comply with paragraph (d)(10), an d to collect gas at an extraction rate to comply with paragraphs (d) (11) and (d)(12). For the purposes of calculating the maximum expecte d gas generation flow rate from the landfill, the 2006 In tergovernmental Panel on Climate Change Guidelines for National Gre enhouse Gas Inventories, Chapter 3 (IPCC Model), using landfill gas capture factor of 75 percent shall be used. Any other met hod used to determine the maximum gas generation flow rate, mus t be submitted in writing and approved by the Executive Officer, prior

to use. (B) If a valid Permit to Construct or Permit to Ope rate has not been issued by the District for the gas collection and g as control systems, the gas collection and gas control systems design plan shall either conform with specifications for active collection systems in 40 CFR, Part 60, Section 60.759 or inclu de a
demonstration to the Executive Officer’s satisfacti on of the sufficiency of the alternative provisions describin g the design and operation of the gas collection and gas control sys tems, the operating parameters that would indicate proper per formance, and appropriate monitoring procedures. Alternatives to this rule shall be submitted as specified in subdivision (i).Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 6 (C) The design plan shall provide for the control o f collected MSW landfill emissions through the use of gas collectio n and gas control systems meeting the applicable requirements in clau ses (d)(1)(C)(i), (d)(1)(C)(ii), (d)(1)(C)(iii), and (d )(1)(C)(iv), or provide for the collection and subsequent sale of c ollected MSW landfill emissions as specified in clause (d)(1)(C) (v). (i) Route all collected landfill gas to a gas contr ol system designed to be operated continuously to reduce meth ane by at least 99 percent by weight and reduce NMOC by at least 98 percent by weight or reduce the outlet NMOC concentration to less than 20 parts per million by volume (ppmv), dry basis as hexane at 3 percent oxygen. Th e required reduction efficiency or ppmv shall be esta blished by an initial source test, required under 40 CFR, P art 60, Section 60.8 and annually thereafter using the test methods specified in paragraph (j)(1). The annual source t est shall be conducted no later than 45 days after the annive rsary date of the initial source test. (ii) If an enclosed flare is used as the gas contro l device, the following requirements shall be met: (I) The enclosed flare shall achieve a methane destruction efficiency of at least 99 percent by weight. (II) The enclosed flare shall be equipped with an automatic damper, an automatic shutdown device, a flame arrestor, and a continuous recording
temperature sensor. (III) During restart or startup, an enclosed flare shall have sufficient flow of propane or commercial natural gas to the burners to prevent unburned collected methane from being emitted to the atmosphere. (IV) The enclosed flare shall be operated within the parameter ranges established during the initial or the most recent source test. The operatingRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 7 parameters to be monitored are specified in paragraph (e)(7). (iii) If an open flare is used as the gas control d evice, the following requirements shall be met: (I) An open flare installed and operated prior to Augus t 1, 2008 may operate until January 1, 2018. (II) Operation of an open flare on or after January 1, 2018 may be allowed if the owner or operator can
demonstrate to the Executive Officer that the landfill gas heat input capacity is less than 3.0 MMBtu/hr and is insufficient to support the continuous operation of an enclosed flare or other gas control device. (III) The owner or operator seeking to temporarily operate an open flare during the maintenance or repair of a gas control system or while waiting for
the installation on an enclosed flare or to offset gas mitigation issues must submit a written request to the Executive Officer and operate an open flare onl y after approval. (iv) If a gas control device is an enclosed combust or other than a flare and is used as a gas control device, the fo llowing requirements shall be met: (I) The gas control device shall achieve a methane destruction efficiency of at least 99 percent by weight. Lean burn combustion engines shall reduce the outlet methane concentration to less than 3,000 ppmv, dry basis, corrected to 15 percent oxygen. (II) If a boiler or process heater is used as the g as control device, the landfill gas stream shall be
introduced into the flame zone. Where the landfill gas is the primary fuel for the boiler or process heater, introduction of the landfill gas stream int o the flame zone is not required. (III) The gas control device shall be operated with in the operating parameter ranges established during theRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 8 initial or most recent compliant source test. The operating parameters to be monitored are specified in paragraph (e)(7). (v) Route the collection gas to a treatment system that processes the collection gas for subsequent sale or use. All emissions from any atmospheric vent from the gas treatment system shall be subject to requirements o f clause (d)(1)(C)(i). (2) New and Active MSW Landfills shall install and operate the gas collection and gas control systems no later than 18 months aft er the submittal of the design plan. (3) Any owner or operator of existing gas collectio n and gas control systems who modifies those systems to meet the requirements of this rule shall submit for approval to the Executive Officer an ame ndment of the existing design plan to include any necessary updates or add enda. Design plan amendments shall be prepared by a professional engi neer. (4) The owner or operator of a closed or inactive l andfill shall install and operate the gas collection and gas control systems no later than 30 months after the approval of the design plan. (5) The owner or operator of an active MSW Landfill shall identify in their design plan the areas of the landfill that are clos ed or inactive. (6) Any area of the landfill that contains asbestos -containing waste or nondecomposable solid waste may be excluded from colle ction provided that the owner or operator submits documentation to the Executive Officer regarding the nature of the material, and the date of its deposit in the area. This documentation may be included as part of the d esign plan. (7) The design plan shall include a description of potential mitigation measures to be used to prevent the release of metha ne or other pollutants into the atmosphere during the installation or prep aration of wells, piping, or other related components during repairs or the t emporary shutdown of the gas collection system components; or to be used when solid waste is
excavated and moved. (8) The gas collection device and gas control syste ms shall be operated, maintained and expanded in accordance with the proc edures and schedules set forth in the approved design plan.Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 9 (9) If the District has not issued prior written ap proval for subsurface refuse boundary sampling probes, the owner or operator sha ll design and install subsurface refuse boundary sampling probes as speci fied in Section 1.1 Attachment A, to determine whether landfill gas mig ration exists. Installation of the refuse boundary probes shall be no later than 18 months after the submittal of the gas collection and gas c ontrol systems design plan as specified in paragraph (d)(1). (10) Operate the gas collection system to prevent t he concentration of TOC measured as methane from exceeding five percent by volume in the subsurface refuse boundary sampling probes construc ted for the purposes of detecting lateral migration of landfill gas away from the waste mass, as determined from collected samples. (11) Operate the gas collection system to prevent t he concentration of TOC measured as methane from exceeding 25 ppmv as deter mined by integrated samples taken on numbered 50,000 square foot landfill grids. (12) Operate the gas collection system to prevent t he concentration of TOC measured as methane from exceeding 500 ppmv above b ackground as determined by instantaneous monitoring at any locat ion on the landfill, except at the outlet of any gas control device. (13) Operate the gas collection and gas control sys tems so that there are no leaks that exceed 500 ppmv TOC measured as methane at any component under positive pressure. Any component leak exceed ing 500 ppmv must be tagged and repaired within 10 calendar days from the time of the first
exceedance. (14) Operate the gas collection and gas control sys tems at all times for landfills with an Active Collection System. In the event the gas collection or gas control systems are inoperable, the active collecti on systems shall be shut down and all valves in the gas collection and gas c ontrol systems contributing to venting of the gas to the atmospher e shall be closed no
later than one hour after such breakdown or no late r than one hour after the time the owner or operator knew or reasonably s hould have known of
its occurrence. (15) Operate the gas collection and gas control sys tems until all the exemption criteria under subdivision (k) have been met and th e reports specified in subparagraph (f)(2)(D) have been submitted to the E xecutive Officer.Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 10 (16) Operate all Wellheads so the gauge pressure is under a constant vacuum (negative pressure), except under the following con ditions: (A) During wellhead raising: When a new fill is be ing added or compacted in the immediate vicinity around the well and once installed, while a gas collection well extension is sealed or capped
until the raised well is reconnected to vacuum sour ce. (B) During repair and temporary shutdown of the gas collection system due to a catastrophic event, such as an earthquake, or to extinguish landfill fires; and as a result of these events, du ring repair efforts to connect new landfill gas collection system componen ts to the existing gas collection system, and to do required permitted component connection for the gas collection system, and to perform permitted construction activities provided the following requirements are met: (i) Any new gas collection system components requir ed to maintain compliance with this subparagraph must be included in the most recent Design Plan pursuant to paragraph (d)(3). (ii) Methane and other landfill gas emissions are m inimized during shutdown pursuant to subdivision (d). (17) Design, install, and operate a wind speed and direction monitoring system with a continuous recorder of the requirements in s ubparagraphs (d)(17)(A) and (d)(17)(B), at a site which is repre sentative of the wind speed and direction in the areas being sampled. Th e wind velocity shall be recorded throughout the sampling period. The wind direction transmitter shall be oriented to true north using a compass. (A) For wind speed use a 3 cup assembly, with a ran ge of 0 to 50 miles per hour, with a threshold of 0.75 mile per hour or less. (B) For wind direction, use a vane with a range of 0 to 540 degrees azimuth, with a threshold of plus-minus 2 degrees. (18) Comply with the requirements of Section 21140 – Final Cover, of California Code of Regulations Title 27, Subchapter5 – Closure and PostClosure Maintenance, upon closure of a MSW landfill unit, incorporated
herein as Attachment B. (19) Comply with the requirement of Section 20200 – State Water Resources Conservation Board (SWRCB) Applicability and Classification Criteria ofRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 11 California Code of Regulations Title 27, Article 2 – SWRCB, Waste Classification and Management, with respect to the disposal of liquids and semi-solid waste at Class III landfills, incorporat ed herein as
Attachment C. (20) Comply with the requirements of National Emiss ions Standards for Hazardous Air Pollutants (NESHAP) 40 CFR Part 63 Su bpart AAAA, as applicable.

(e) Active Landfill Sampling and Monitoring Require ments The MSW landfill owner or operator shall comply wit h the provisions of paragraphs (e)(1) through (e)(7), after installatio n of the landfill gas control
system: (1) Monitor and collect samples for analysis as spe cified in Section 1.0, Attachment A, to determine the concentrations of TO C and TAC each month from the subsurface refuse boundary sampling probes, to assure continued compliance. Any measurement of 5 percent TOC by volume or greater shall be recorded as an exceedance and the actions specified in subparagraphs (e)(1)(A) through (e)(1)(C) shall be taken. (A) The probe shall be identified and the location recorded as specified in Section 1.6, Attachment A. (B) Adjustments to the vacuum of adjacent wells to increase the gas collection in the vicinity of the probe with the ex ceedance, shall be made and the probe resampled no later than 10 calen dar days after detecting the exceedance. (C) If the resampling of the probe shows a second e xceedance,
additional corrective action shall be taken and the probe shall be resampled again no later than 10 calendar days afte r the second exceedance. If the resampling shows a third exceed ance, it is a violation unless the owner or operator determines t hat a new or replacement gas collection well is needed. The own er or operator must install and operate the new or replacement wel l no later than 45 days after detecting the third exceedance. (2) Collect monthly integrated samples for analysis as specified in Section 2.0, Attachment A, to determine the concentrations of TOC and TAC from the landfill surface, and to assure continued compl iance. Any reading ofRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 12 25 ppmv or greater shall be recorded as an exceedan ce and the actions specified in subparagraphs (e)(2)(A) through (e)(2) (C) shall be taken. (A) The grid shall be identified and the location r ecorded as specified in Section 2.8, Attachment A. (B) If the sample shows an exceedance, the gas coll ection equipment
and the landfill cover shall be serviced to ensure the exceedance is repaired. If adjustments to the vacuum of adjacent wells are made to increase the gas collection in the vicinity of t he grid with the exceedance resample the grid no later than 10 calen dar days after detecting the exceedance. If measurable precipitat ion occurs within the 10 calendar days, all resamples and anal ysis shall comply with Section 2.2.2, Attachment A. (C) If the resample of the grid shows a second exce edance, additional corrective action shall be taken and the grid shall be resampled again no later than 10 calendar days after the seco nd exceedance. If the resample shows a third exceedance, it is a v iolation unless the owner or operator determines that a new or repl acement gas collection well is needed. The owner or operator m ust install and operate the new or replacement well no later than 4 5 days after detecting the third exceedance. (3) Instantaneous surface monitoring as specified i n Section 3.0, Attachment A, shall be conducted to determine the concentratio n of TOC each calendar quarter, to assure continued compliance. Any reading of 500 ppmv TOC or greater other than non-repeatable momen tary readings, shall be recorded as an exceedance and the actions specif ied in subparagraphs (e)(3)(A) through (e)(3)(C) shall be taken. Any cl osed or inactive MSW landfill that meets the definitions in (c)(4) or (c )(16) and has no observed monitoring readings that exceed 500 ppmv for the la st four consecutive quarterly monitoring periods may, upon approval of the Executive Officer, monitor annually. Any reading of 500 ppmv TOC or m ore detected during the annual monitoring or an SCAQMD complianc e inspection that cannot be remediated within 10 days shall result in a return to quarterly monitoring for the landfill. (A) The location of each exceedance shall be clearl y marked and identified on a topographic map of the MSW landfill or identifiedRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 13 by using a global positioning system and the locati on recorded as specified in Section 3.4, Attachment A. (B) Corrective action must be taken by the owner or the operator, including, but not limited to one or more of the fo llowing: cover maintenance or repair, or well vacuum adjustments. The location shall be remonitored no later than 10 calendar days after detecting
the exceedance. (C) If the remonitoring of the location shows a sec ond exceedance,
additional corrective action shall be taken and the location shall be remonitored again no later than 10 days after the s econd exceedance. If the remonitoring shows a third exce edance, it is a violation unless the owner or operator determines t hat a new or replacement gas collection well is needed. The own er or operator must install and operate the new or replacement wel l no later than 45 days after detecting the third exceedance. (4) Wellheads shall each be monitored monthly to de termine the gauge pressure. If there is any positive pressure reading , other than as provided in subparagraphs (d)(16)(A) and (d)(16)(B), the own er or operator shall take the following actions: (A) Initiate corrective action within 5 calendar da ys of the positive
pressure measurement. (B) If the problem cannot be corrected within 15 da ys of the first positive pressure measurement, the owner or operato r must initiate further action, including but not limited to, any n ecessary expansion of the gas collection system to mitigate any positive pressure readings. (C) All corrective actions, including any expansion of the gas collection and gas control systems, must be complet ed and any new wells must be in operation within 120 days of t he date of the first positive pressure measurement. (D) Determination of gauge pressure must be determi ned using a handheld manometer, magnahelic gauge or other pressure measuring device approved by the Executive Officer. The devi ce must be calibrated and operated in accordance with the manu facturer’s specifications.Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 14 (5) Collect a monthly landfill gas sample for analy sis as specified in Section 4.0, Attachment A, to determine the concentrations of TOC and TAC from the main gas collection header line entering any ga s control systems. (6) Collect monthly ambient air samples for analysi s as specified in Section 5.0, Attachment A, to determine the concentrations of TOC and TAC from the landfill property boundary. (7) Monitor the gas collection and gas control syst ems equipment specified under subparagraphs (e)(7)(A), (e)(7)(B) and (e)(7) (C) in order to comply with subparagraph (d)(1)(C). (A) For enclosed combustors and enclosed flares, th e following equipment must be installed, calibrated, maintained , and operated according to the manufacturer's specifications: (i) A temperature monitoring device equipped with a continuous recorder and having an accuracy of plus- minus 1 percent of the temperature being measured express ed in degrees Celsius or Fahrenheit. A temperature monit oring device is not required for boilers or process heate rs with design heat input capacity greater than 44 megawatt s. (ii) At least one gas flow rate measuring device th at shall record the flow to the gas control device(s) at lea st every 15
minutes. (B) For open flares and other non-combustion system s, demonstrate compliance with subparagraph (d)(1)(C) by providing information satisfactory to the Executive Officer describing th e operation of the gas control device, the operating parameters that w ould indicate proper performance, and appropriate monitoring proc edures. Alternatives to this rule shall be submitted as spe cified in subdivision (i). The Executive Officer may specify additional appropriate monitoring procedures. (C) All components containing landfill gas that are under positive pressure shall be monitored for leaks on a quarterl y basis. Any component leak must first be tagged and then repair ed within 10 calendar days. Component leak testing at MSW landf ills having landfill gas-to-energy facilities may conduct testi ng for leaks prior to scheduled maintenance or during planned outage p eriods.Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 15 (f) Active Landfill Recordkeeping and Reporting Req uirements The MSW landfill owner or operator shall keep all r ecords on paper, electronic or in other suitable data formats approved by the Exec utive Officer, kept up-to-date, readily accessible and maintained for at least a pe riod of 5 years. Such records shall be made available to the Executive Officer up on request. Records older than 2 years may be maintained off-site, if they are ret rievable no later than 4 hours after request. (1) The records required in subparagraphs (f)(1)(A) through (f)(1)(L) shall be maintained and be accessible by the facility. (A) For the life of the gas control system, as meas ured during the initial source test or compliance determination: (i) The gas control device vendor specifications. (ii) The maximum expected gas generation flow rate as calculated pursuant to subparagraph (d)(1)(A). (iii) When demonstrating compliance with subparagra ph (d)(1)(C) through the use of an enclosed combustion device other than a boiler or process heater with a design heat input capacity greater than 44 megawatts: (I) The average combustion temperature measured at least every 15 minutes and averaged over the same time period of the source test. (II) The reduction of NMOC and the reduction of methane determined as specified in clause (d)(1)(C)(i) achieved by the gas control device. (iv) When demonstrating compliance with subclause (d)(1)(C)(i) through the use of a boiler or process heater of any size: a description of the location at which t he collected gas vent stream is introduced into the bo iler or process heater and is established during the initia l or most

recent source test. (v) When demonstrating compliance with subparagraph (d)(1)(A) though the use of a non-enclosed combusti on device, the owner or operator shall maintain record s of
measurement from the initial source test and from e ach annual performance test as specified in 40 CFR 60.1 8. If the combustion device is an open flare, the owner o rRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 16 operator shall maintain records of the flare flame monitoring and records of all periods of operation during which the pilot flame of the flare is absent. (B) The data required to be recorded under Section 1.6, Attachment A, for subsurface refuse boundary sampling probes and all remedial actions taken for exceedances of the 5 percent TOC standard required in paragraph (d)(10) and all actions taken and recorded to comply with Title 27 sec. 20937 (a)(2)(B)(i) throug h (a)(2)(B)(iv). (C) The data required to be recorded under Section 2.8, Attachment A, for integrated samples and all remedial actions tak en for exceedances of the 25 ppmv TOC standard required in paragraph (d)(11). (D) The data required to be recorded under Section 3.4, Attachment A, for instantaneous monitoring and all remedial actio ns taken for exceedances of the 500 ppmv TOC standard required i n paragraph (d)(12). Instantaneous monitoring exceedances from 200 to 499 ppmv shall also be recorded but remedial action is not required. (E) The data required to be recorded under Section 4.5, Attachment A, for landfill gas samples collected from the main ga s collection header line entering the gas treatment and/or gas c ontrol systems. (F) The data required to be recorded under Section 5.7, Attachment A, from ambient air collected at the landfill property boundary. (G) A description and the duration of all periods w hen the gas collection or gas control system was not operating for a period exceeding one hour and the length of time the syste m was not operating. (H) During construction that requires exposing soli d waste material to the atmosphere, the following records are required: (i) A description of actions taken, the affected ar ea of the MSW Landfill, the reason the actions are required a nd a list of the landfill gas collection system components af fected by actions; (ii) Construction start and finish dates, projected equipment installation dates, and projected shut down times f or individual gas collection system components; andRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 17 (iii) A description of the mitigation measures take n to minimize methane emissions and other potential air quality i mpacts during the construction period. (I) All records pertaining to solid waste acceptanc e, solid waste acceptance rate, and the current amount of waste in place. (J) All records pertaining to non-degradable waste acceptance, including the nature, location, amount, and the dep osition for any landfill area excluded from the gas collection syst em. (K) All records of positive wellhead gauge pressure measurements, the date of the measurements, the well identification n umber, and the
corrective action taken. (L) Continuous records of the equipment operating p arameters specified to be monitored under paragraph (e)(7) as well as records for periods of operation during which the parameter boundaries established during the most recent source test are exceeded. (i) The following constitute exceedances that shall be
recorded: (I) For enclosed combustors except for boilers and process heaters with design heat input capacity of 44 megawatts (150 million British thermal unit per hour) or greater, all 3-hour periods of operation during which the average combustion temperature
was more than 28 o C (82 o F) below the average combustion temperature during the most recent source test at which compliance with subparagraph (d)(1)(C) was determined. (II) For boilers or process heaters, whenever there is a change in the location at which the vent stream is introduced into the flame zone as required under clause (f)(1)(A)(iv). (ii) Records of the indication of flow to the gas c ontrol device specified in clause (e)(7)(A)(ii). (iii) Each owner or operator who uses a boiler or p rocess heater with a design heat input capacity of 44 megawatts o r greater to comply with subparagraph (d)(1)(C) shall keep records of all periods of operation of the boiler o r processRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 18 heater. (Examples of such records could include re cords of steam use, fuel use, or monitoring data collected p ursuant to other State, local, Tribal, or Federal regulator y requirements.) (2) The reports required in subparagraphs (f)(2)(A) through (f)(2)(D) shall be
submitted to the Executive Officer. (A) The initial source test report no later than 18 0 days after start-up and each succeeding complete annual source test rep ort no later than 45 days after the anniversary date of the init ial source test, for all gas control systems required in subparagraph (d )(1)(C). (B) A report no later than 45 days after the last d ay of each calendar quarter with the information required in clauses (f )(2)(B)(i) and (f)(2)(B)(ii). (i) All exceedances of the emission standards requi red in paragraphs (d)(10), (d)(11) and (d)(12) in the form at required under Sections 1.6, 2.8 and 3.4, Attachmen t A. All exceedances resampled/remonitored and each corrective action required under paragraphs (e)(1), (e)(2) and (e)(3). If there are no exceedances, submit a letter stating there were no exceedances for that quarter. (ii) All TAC analyses required in paragraphs (e)(1) through (e)(6). (C) Any owner or operator of a MSW landfill which h as ceased accepting waste shall submit a closure report to th e Executive Officer no later than 30 days after waste acceptanc e cessation. The report should include the last day solid waste was accepted, the projected date of closure for the MSW Landfill, and the estimated amount of waste-in-place. The Executive Officer ma y request additional information as may be necessary to verif y that permanent closure has taken place in accordance wit h the requirements of 40 CFR, Part 258, Section 258.60 or the applicable federal, state and local statutes, regulations, and ordinances in effect at the time of closure. If a closure report has been submitted to the Executive Officer, no additional wastes shal l be placed into the landfill without filing a notification of modif ication as described under 40 CFR, Part 60, Section 60.7(a)(4)

.Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 19 (D) Any owner or operator of a MSW landfill which h as ceased operation of a gas collection or gas control system shall submit a decommissioning report to the Executive Officer 30 days prior to well capping, removal or cessation of operation of the collection, treatment or control equipment. The decommissionin g report shall contain all of the items as specified in clauses (f )(2)(D)(i) through (f)(2)(D)(iii): (i) A copy of the closure report submitted in accor dance with subparagraph (f)(2)(C). (ii) A copy of the initial source test report demon strating that the gas collection and gas control systems have bee n installed for a minimum of 15 years. (iii) All records needed to verify that the landfil l meets the exemption criteria under subdivision (k). (3) An Annual Report shall be submitted by any owne r or operator subject to the requirements of this rule. The Annual Report s hall cover the period of January 1 through December 31 of each year. Each A nnual Report shall be submitted by March 15 of the following year to t he District. The Annual Report shall contain the following: (A) MSW Landfill name, owner and operator, address, solid waste information system (SWIS) identification number, la ndfill status (active, closed, inactive) and estimated waste-in–p lace in tons; (B) Total volume of landfill gas collected (reporte d in standard cubic feet); (C) Average composition of the landfill gas collect ed over the reporting period (reported in percent methane and p ercent carbon dioxide by volume); (D) Gas control device type, year of installation, rating, fuel type, and total amount of landfill gas combusted in each gas control device; (E) The date that the gas collection and gas contro l systems were installed and in full operation; (F) The percent methane destruction efficiency of e ach gas control device; (G) Type and amount of supplemental fuels burned wi th the landfill gas in each device;Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 20 (H) Total volume of landfill gas shipped off-site, the composition of the landfill gas collected (reported in percent met hane and percent carbon dioxide by volume), and the recipient of the gas; (I) Most recent topographic map of the site showing the areas with final cover and a geomembrane, and areas with final cover without a geomembrane, with corresponding percentages over the landfill surface; and (J) The records required by paragraph (f)(1) except for records required by subparagraphs (f)(1)(B), (f)(1)(E) and (f)(1)(F). (4) Any report or information required in paragraph (f)(2) or (f)(3) must be certified by a responsible official that the statem ents and information in the report are true, accurate, and complete.

(g) Active Landfill Compliance Schedule The MSW landfill owner or operator shall comply wit h the active landfill requirements of this rule or an approved Rule 1150. 1 Compliance Plan as specified in subdivision (i). An MSW landfill owne r or operator that requires one or more alternatives to comply with this rule due t o the April 1, 2011 rule amendment, shall submit a request for such alternat ives as specified in subdivision (i) by May 6, 2011 that demonstrates co mpliance no later than July 1, 2011, and shall comply with any previously approved Rule 1150.1 Compliance Plan until July 1, 2011 or until the owner or opera tor has received an approved revised Rule 1150.1 Compliance Plan. On and after July 1, 2011, the MSW landfill owner or operator shall operate pursuant t o an approved Rule 1150.1 Compliance Plan or, if plan approval is pending, th e revised Rule 1150.1 Compliance Plan submitted on or before May 6, 2011.

(h) Inactive Landfill Requirements The MSW landfill owner or operator shall comply wit h either the applicable requirements in paragraphs (h)(1) and (h)(2) or sub mit alternatives to this rule as specified in subdivision (i). (1) Inactive landfills that have a landfill gas col lection system shall meet all of the active landfill requirements. For those inacti ve landfills without a gas collection system and determined to need one, meet all of the active landfill requirements, except the gas collection an d gas control systemsRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 21 design plan. Applications for permits shall be sub mitted no later than one year after notification by the Executive Officer. (2) Inactive landfills without a gas collection sys tem: (A) Upon discovery of TOC measured as methane excee ding 200 ppmv at any location on the landfill surface, apply mitigation measures such as compaction, additional cover, and/ or watering to reduce the emissions to less than 200 ppmv. The pr ocedure used for measurement of TOC shall meet the requirements of Section 3.0, Attachment A. (B) Submit the following data and/or meet the requi red action in paragraph (h)(1): (i) No later than 30 days after the receipt of a re quest, submit to the Executive Officer a screening questionnaire pursuant to California Air Resources Board Health and Safety Code (H & S) 41805.5. (ii) No later than 90 days after the date of a seco nd request, submit to the Executive Officer a solid waste air q uality assessment test (SWAT) report pursuant to H & S 418 05.5, to determine whether or not a landfill gas collecti on and gas control systems and/or a subsurface refuse boundary probe sampling system shall be required to be installed. (iii) If additional time is needed to provide the i nformation required in clauses (h)(2)(B)(i) and (h)(2)(B)(ii), a written request for an extension may be submitted in writin g to the Executive Officer, indicating the amount of time th at is needed to obtain such information. Such a request for an extension may be submitted to the Executive Officer no later than 30 days after the receipt of the Executi ve Officer's requests as specified in clauses (h)(2)(B )(i) and (h)(2)(B)(ii). (iv) Upon notification by the Executive Officer that a l andfill gas collection and gas control systems and/or a sub surface refuse boundary probe sampling system shall be requ ired, comply with paragraph (h)(1).Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 22 (i) Alternatives The owner or operator of a MSW landfill may request alternatives to the compliance requirements, monitoring requirements, t est methods, and test procedures of this rule. All requests for alternat ives to the requirements of this
rule shall be submitted to the Executive Officer in a Rule 1150.1 Compliance
Plan. The Executive Officer shall review the Rule 1150.1 Compliance Plan and either approve it, disapprove it, or request that a dditional information be submitted. Unless a determination is made by the E xecutive Officer that the Rule 1150.1 Compliance Plan will provide equivalent leve ls of emission control and enforceability, as would compliance with the requir ements of this rule, the Executive Officer will deny the plan. Criteria tha t the Executive Officer may use to evaluate requests for alternatives include, but are not limited to: compliance history, documentation, containment of the landfill gas flow rate measured methane concentrations for individual gas collectio n wells or components, permits, component testing and surface monitoring r esults, gas collection and gas control systems operations, maintenance and inspect ion records, and historical meteorological data. Requests for alternatives may include, but are not limited to, the following: (1) Semi-continuous operation of the gas collection and gas control systems due to insufficient landfill gas flow rates. (2) Additional time for leak repairs for landfills having consistent issues related to the procurement and delivery of necessar y parts to complete the repairs. (3) Alternative wind speed requirements for landfil ls consistently having wind speed in excess of the limit specified in Sec.2.2.1 of Attachment A.

(j) Test Methods (1) Methods of Analysis (A) Either U.S. EPA Reference Method 25 or U.S. EPA Reference Method 18 (inlet only), 40 CFR, Part 60, Appendix A , SCAQMD Method 25.1 or SCAQMD Method 25.3 shall be used to determine the efficiency of the gas control system in reducin g NMOC. If using Method 18, the minimum list of compounds to b e tested shall be those published in the most recent Compilation o f Air Pollutant Emission Factors (AP-42). The equation in subparag raph (j)(1)(B) shall be used to calculate efficiency.Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 23 (B) U.S. EPA Reference Method 25, 40 CFR, Part 60, Appendix A, SCAQMD Method 25.1, or SCAQMD Method 25.3 shall be used to determine the efficiency of the gas control syst em in reducing the outlet NMOC concentration to less than 20 ppmv, dry basis as hexane at 3 percent oxygen. The following equation shall be used to calculate efficiency:


### ( )

( ) 100% NMOC NMOC NMOC (%) y Efficienc Control

in out in × −
=

where,
NMOC in = mass of NMOC entering control device
NMOC out = mass of NMOC exiting control device (C) Either U.S. EPA Reference Method 25, U.S. EPA R eference Method 18, 40 CFR, Part 60, Appendix A, SCAQMD Meth od 25.1, SCAQMD Method 25.3, ASTM Method D1945, or AST M
Method D1946 shall be used to determine the efficie ncy of the gas control system in reducing methane. The equation i n subparagraph (j)(1)(D) shall be used to calculate efficiency.
(D) U.S. EPA Reference Method 25, U.S. EPA Referenc e Method 18, 40 CFR, Part 60, Appendix A, SCAQMD Method 25.1, SC AQMD Method 25.3, ASTM Method D1945, or ASTM Method D194 6 shall be used to determine the efficiency of the ga s control system in reducing the outlet methane concentration to les s than 20 ppmv, dry basis as hexane at 3 percent oxygen. The follo wing equation shall be used to calculate efficiency:



### ( ) ( ) 100% Methane Methane Methane (%) y Efficienc Control

in out in × −
=

where,
Methane in = mass of Methane entering control device
Methane out

= mass of Methane exiting control device (2) Equivalent Test Methods Any other method demonstrated to be equivalent and approved in writing by the Executive Officers of the District, the Cali fornia Air Resources Board (CARB), and the Regional Administrator of the United StatesRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 24 Environmental Protection Agency (U.S. EPA), Region IX, or their designees, may be used to determine compliance with this rule. (3) Approval for Conducting Test and Analysis The owner or operator shall use a test laboratory a pproved under the SCAQMD Laboratory Approval Program for source test methods cited in subdivision (j). If there is no approved laboratory , then approval of the testing procedures used by the laboratory shall be granted by the Executive Officer on a case-by-case basis based on SCAQMD protocols and procedures. In addition, when more than one so urce test method or set of source test methods are specified for any te sting, the application of these source test methods to a specific set of test conditions is subject to approval by the Executive Officer. (4) Violation of Test Methods A violation established by any one of the specific source test methods or
set of source test methods shall constitute a viola tion of this rule.

(k) Exemptions An MSW landfill may be temporarily exempt from all or any portion of the requirements of this rule if the owner or operator can demonstrate to the Executive
Officer that the MSW landfill emissions meet the re quirements of paragraphs (k)(1) through (k)(5), temporary exemptions may be independently determined by the Executive Officer, if the MSW landfill emission s meet the requirements of paragraphs (k)(1) through (k)(5). MSW landfills is sued temporary exemption letters by the Executive Officer shall remain exemp t, subject to periodic review, provided: (1) The MSW landfill complies with the requirements of paragraphs (d)(10), (d)(11) and (d)(12). (2) The MSW landfill emits less than 55 tons per ye ar of NMOC as specified in 40 CFR, Part 60, Section 60.752(b) or, for a clo sed landfill, as specified in 40 CFR, Part 60, Section 60.752(b)(2)(v)(C). (3) The MSW landfill constitutes a less than signif icant health risk. In making this determination the Executive Officer sha ll consider the listed factors in subparagraphs (k)(3)(A) through (k)(3)(G ). Where not specified, in evaluating the cancer risks and hazar d indices, the Executive Officer shall be guided by the definitions in Distr ict Rule 1401 - NewRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 25 Source Review of Carcinogenic Air Contaminants, and Rule 1402 - Control of Toxic Air Contaminants from Existing Sou rces. (A) The proximity to, and any adverse impacts on, r esidences, schools, hospitals or other locations or structures which ha ve children, or elderly or sick persons. (B) The emission migration beyond the landfill prop erty boundary. (C) The complaint history. (D) The age and closure date. (E) The amount and type of waste deposited. (F) That the emissions of carcinogenic air contamin ants, specified in Tables 1 & 2, Attachment A, from the landfill will not result in a maximum individual cancer risk greater than one in one million (1 x 10 -6 ) at any receptor location. (G) That the emissions of TAC, specified in Tables 1 & 2, Attachment A, from the landfill will not result in a total acu te or chronic Hazard Index of greater than 1. (4) The MSW landfill is in compliance with District Nuisance Rule 402.
(5) The MSW landfill does not generate sufficient g as to support a gas control system. In making this determination, the Executiv e Officer shall apply the requirements of subparagraphs (k)(5)(A) and (k) (5)(B), and shall only consider temporary exemptions from the requirements of subdivision (d).
(A) If the MSW landfill is closed or inactive and h as a landfill gas heat input capacity equal to or greater than 3.0 MMBtu/h r, the owner or operator must demonstrate to the satisfaction of th e Executive Officer that after four consecutive quarterly insta ntaneous monitoring periods there are no surface methane lea ks exceeding 200 ppmv, and submit a waste-in-place report and al l instantaneous surface monitoring records from the previous year t o the Executive
Officer.
(B) If the MSW landfill is active and has 450,000 t ons of waste-inplace or greater and a landfill gas heat input capa city greater than or equal to 3.0 MMBTU/hr, the owner or the operator must
demonstrate to the satisfaction of the Executive Of ficer that after four consecutive quarterly instantaneous monitoring periods thereRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 26 are no surface methane leaks exceeding 200 ppmv and re-calculate the heat capacity annually.
Such a temporary exemption shall be reviewed period ically by the Executive Officer, to consider the land use surrounding the l andfill and gaseous emissions, and the impact on the public. Depending upon the r esults of the review, the Executive Officer may extend or terminate the exemp tion.

(l) Loss of Exemption If an MSW landfill should have its temporary exempt ion terminated, the owner or operator shall comply with the active landfill requ irements of this rule.

(m) The amendments to this rule adopted April 1, 20 11 implementing the State Air Resources Board Landfill Rule Cal. Code Regs. Tit. 17 §95460 et seq. shall not
become effective until the State Air Resources Boar d Executive Officer or designee provides a letter to the District stating that the enforcement of these requirements shall be in lieu of the State Air Reso urces Board rule, which shall
not be enforced within the District.Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 27 ATTACHMENT A

1.0 SUBSURFACE REFUSE BOUNDARY SAMPLING PROBES Paragraphs (d)(9) and (e)(1) Requirements of Rule 1 150.1

1.1 Subsurface Probe Design and Installation Landfills which are subject to Rule 1150.1 must ins tall and maintain a subsurface refuse boundary probe sampling system of adequate d esign to determine if gas migration exists for the ultimate purpose of preven ting surface emissions. CalRecycle also requires the installation of refuse boundary probes for purposes of detecting and ultimately preventing subsurface m igration of landfill gas past the permitted property boundary of the landfill/dis posal site as well as the prevention of the accumulation of landfill gas in o n-site structures. It is the
District’s intent that the subsurface refuse bounda ry probes required by paragraph (d)(9) of Rule 1150.1 be designed and installed in such a manner as to comply with the requirements of CalRecycle (whenever possi ble) and Sections 1.1.1 through 1.1.4. 1.1.1 The probes shall be installed within the land fill property line and outside the refuse disposal area. 1.1.2 Wherever accessible, the probes shall be loca ted no further than 100 feet from the refuse boundary. 1.1.3 The spacing between probes shall be based on the adjacent land use no further than 1320 feet (1/4 mile) from the refuse b oundary and shall be
determined as follows:

LAND USE SPACING
Residential/Commercial 100 feet
Public Access 500 feet Undeveloped Open Space, (No Public Access) 650 feet
Landfill with Liners 1000 feet
1.1.4 Each probe shall be capped, sealed, have a sa mpling valve and be of multiple-depth design for which the depth shall be determined based on the depth of refuse no further than 500 feet from t he probe as follows:
First Depth 10 feet below surface. Second Depth 25% of refuse depth or 25 feet below s urface,

whichever is deeper.Rule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 28

Third Depth 50% of refuse depth or 50 feet below su rface,

whichever is deeper. Fourth Depth 75% of refuse depth or 75 feet below s urface,

whichever is deeper.
Second, third, or fourth depth probes may be delete d if the required depth of such probe is deeper than the depth of the refuse.
1.2 Number of Samples All refuse boundary gas probes at each depth shall be monitored monthly for TOC measured as methane using a portable flame ionizati on detector (FID) meeting the requirements of Section 3.2 and with a tube connect ed to the probe sampling valve. In addition, samples shall be taken as spec ified in Section 1.2.1 or 1.2.2 to
determine the concentration of both TOC and TAC. T he Executive Officer may require additional probes to be sampled upon writte n request.
1.2.1 If the TOC concentration measured with the FI D does not exceed 5% by volume in any of the probes, collect one bag sample from one probe with the highest concentration, or
1.2.2 If the TOC concentration measured with the FI D for any of the probes exceeds 5% by volume, collect one bag sample per pr obe from the probes with the highest concentrations above 5% by volume, from at least five probes.
1.3 Subsurface Refuse Boundary Probe Sampling Proce dure 1.3.1 Prior to collecting gas samples, evacuate the probe (the probes must be sealed during evacuation) until the TOC concentrati on remains constant
for at least 30 seconds.
1.3.2 The constant TOC concentration shall be measu red using an FID that meets the requirements in Section 3.2. 1.3.3 Collect approximately a 10-liter gas sample i n a Tedlar (DuPont trade name for polyvinyl) bag or equivalent container ove r a continuous tenminute period using the evacuated container samplin g procedure
described in Section 7.1.1 of EPA Method 18 or dire ct pump sampling procedure described in Section 7.1.2 of EPA Method 18. The container
shall be LIGHT-SEALED.Rule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 29 1.4 Subsurface Refuse Boundary Probe Analytical Pro cedures All samples collected shall be analyzed no later th an 72 hours after collection for TOC using U.S. EPA Method 25, 40 CFR, Part 60, Appe ndix A analysis or a portable FID that meets the requirements in Section 3.2 and for the TAC specified in Table 1 and upon written request, Table II, usin g U.S. EPA Compendium
Method TO-14.
1.5 Chain of Custody (Required for samples sent to the lab) A custody sheet shall accompany the bag samples. E ach time a bag changes hands, it shall be logged on the custody sheet with the time of custody transfer recorded. Laboratory personnel shall record the co ndition of the sample (full, three-fourths full, one-half full, one-fourth full, or empty). An example of a custody sheet is shown in Figure 4.
1.6 Recording the Results
1.6.1 Record the volume concentration of TOC measur ed as methane for each individually identified refuse boundary probe (at e ach depth) and the volume concentration of TAC for selected probes on a quality control sheet as shown in Figure 3. Include a topographic map drawn to scale with the location of both the refuse boundary probe s and the gas collection system clearly marked and identified. 1.6.2 Maintain and submit the results as specified in subdivision (f) of
Rule 1150.1.

2.0 INTEGRATED LANDFILL SURFACE SAMPLING Paragraph (d)(11) and (e)(2) Requirements of Rule 1 150.1

2.1 Number of Samples The number of samples collected will depend on the area of the landfill surface. The entire landfill disposal area shall be divided into individually identified 50,000 square foot grids. One monthly sample shall be collected from each grid for analysis. Any area that the Executive Officer deems inaccessible or dangerous for a technician to enter may be excluded from the sampling grids monitored by the landfill owner or operator. To exclude an area from monitoring, the landfill owner or operator shall file a written request with the Executive Officer. Such a request shall include an explanation of the request ed exclusion and photographs of the area. The Executive Officer shall notify th e landfill owner or operator inRule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 30 writing of the decision. Any exclusion granted sha ll apply only to the monitoring requirement. The 25 ppmv limit specified in paragr aph (d)(11) of Rule 1150.1 applies to all areas.
2.2 Integrated Surface Sampling Conditions 2.2.1. The average wind speed during this sampling procedure shall be five miles per hour or less. Surface sampling shall be terminated when the average wind speed exceeds five miles per hour or t he instantaneous wind speed exceeds ten miles per hour. Average win d speed is determined on a 15-minute average. 2.2.2. Surface sampling shall be conducted when the landfill is dry. The landfill is considered dry when there has been no m easurable precipitation for the preceding 72 hours prior to s ampling. Most major newspapers report the amount of precipitation that has fallen in a 24- hour period throughout the Southern California area . Select the nearest reporting station that represents the landfill loca tion or provide for measurable precipitation collection at the MSW land fill wind monitoring
station.
2.3 Integrated Surface Sampler Equipment Descriptio n An integrated surface sampler is a portable self-co ntained unit with its own internal power source. The integrated sampler cons ists of a stainless steel collection probe, a rotameter, a pump, and a 10-lit er Tedlar bag enclosed in a LIGHT-SEALED CONTAINER to prevent photochemical rea ctions from occurring during sampling and transportation. The physical layout of the sampler is shown in Figure 1.
An alternate integrated surface sampler may be used , provided that the landfill owner or operator can show an equivalency with the sampler specifications in Section 2.4 and shown in Figure 1. All alternative s shall be submitted as specified in subdivision (i) of Rule 1150.1.
2.4 Integrated Surface Sampler Equipment Specificat ions 2.4.1 Power: Batteries or any other power source. 2.4.2 Pump: The diaphragm shall be made of non-lub ricated Viton (Dupont trade name for co-polymer of hexafluoropropylene an d vinylidene fluoride) rubber.Rule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 31 2.4.3 Bag: One 10-liter Tedlar bag with a valve. The Tedlar bag shall be
contained in a LIGHT-SEALED CONTAINER. The valve s hall be leak free and constructed of aluminum, stainless steel, or non-reactive plastic with a Viton or Buna-N (butadiene acrylonitrile co- polymer) o-ring seal.
2.4.4 Rotameter: The rotameter shall be made of bo rosilicate glass or other non-reactive material and have a flow range of appr oximately 0-to-1 liter per minute. The scale shall be in milliliters or a n equivalent unit. The graduations shall be spaced to facilitate accurate flow readings.
2.4.5 Air Flow Control Orifice: Needle valve in th e rotameter.
2.4.6 Funnel: 316 stainless steel. 2.4.7 Fittings, Tubing and Connectors: 316 stainle ss steel or Teflon.
2.5 Integrated Surface Sampling Procedure 2.5.1 An integrated surface sampler as described in Section 2.4 shall be used to collect a surface sample approximately 8-to-10 l iters from each grid. 2.5.2 During sampling, the probe shall be placed 0- to-3 inches above the
landfill surface. 2.5.3 The sampler shall be set at a flow rate of ap proximately 333 cubic centimeters per minute 2.5.4 Walk through a course of approximately 2,600 linear feet over a continuous 25-minute period. Figure 2 shows a walk pattern for the 50,000 square foot grid.
2.6 Integrated Surface Sample Analytical Procedures All samples collected shall be analyzed no later th an 72 hours after collection for TOC using U.S. EPA Method 25, 40 CFR, Part 60, Appe ndix A analysis or a portable FID that meets the requirements in Section 3.2. In addition, the samples specified in Section 2.6.1 or 2.6.2 must be analyze d no later than 72 hours after collection for the TAC specified in Table 1 and upo n written request, Table II, using U.S. EPA Compendium Method TO-14. 2.6.1 Ten percent of all samples which have a conce ntration of TOC greater than 25 ppmv as methane, or 2.6.2 Two samples if all samples are 25 ppmv or les s of TOC or two samples if there are less than 20 samples above 25 ppmv. The Executive Officer may require more samples to b e tested for TAC if he determines there is a potential nuisance or public health problem.Rule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 32 2.7 Chain of Custody (Required for samples sent to the lab) A custody sheet shall accompany the bag samples. E ach time a bag changes hands, it shall be logged on the custody sheet with the time of custody transfer recorded. Laboratory personnel shall record the co ndition of the sample (full, three-fourths full, one-half full, one-fourth full, or empty). An example of a custody sheet is shown in Figure 4.
2.8 Recording the Results
2.8.1 Record the volume concentration of both TOC m easured as methane for each grid and the volume concentration for the requ ired TAC on a quality control sheet as shown in Figure 3. Includ e a topographic map drawn to scale with the location of the grids and t he gas collection system clearly marked and identified. 2.8.2 Record the wind speed during the sampling per iod using the wind speed and direction monitoring system required in paragra ph (d)(17) of
Rule 1150.1. 2.8.3 Maintain and submit the results as specified in subdivision (f) of
Rule 1150.1.

3.0 INSTANTANEOUS LANDFILL SURFACE MONITORING Paragraphs (d)(12) and (e)(3) Requirements of Rule 1150.1

3.1 Monitoring Area The entire landfill disposal area shall be monitore d once each calendar quarter. Any area of the landfill that the Executive Officer deems as inaccessible or dangerous for a technician to enter may be excluded from the area to be monitored by the landfill owner or operator. To ex clude an area from monitoring, the landfill owner or operator shall file a petitio n with the Executive Officer. Such a request shall include an explanation of why the area should be excluded and photographs of the area. Any excluded area gra nted shall only apply to the monitoring requirement. The 500 ppmv limit specifi ed in paragraph (d)(12) of Rule 1150.1 applies to all areas.
3.2 Equipment Description and Specifications A portable FID shall be used to instantaneously mea sure the concentration of TOC measured as methane at any location on the land fill. The FID shall meet theRule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 33 specifications listed in Sections 3.2.1 through 3.2 .4 and shall be kept in good operating condition. 3.2.1 The portable analyzer shall meet the instrume nt specifications provided in Section 3 of U.S. EPA Method 21, except that: 3.2.1.1 “Methane” shall replace all references to V OC. 3.2.1.2 A response time of 15 seconds or shorter sh all be used instead

of 30 seconds. 3.2.1.3 A precision of 3% or better shall be used i nstead of 10%.

In addition the instrument shall meet the specifica tions in Sections 3.2.1.4 through 3.2.1.6. 3.2.1.4 A minimum detectable limit of 5 ppmv (or lo wer). 3.2.1.5 A flame-out indicator, audible and visual. 3.2.1.6 Operate at an ambient temperature of 0 - 50 o C. 3.2.2 The calibration gas shall be methane, diluted to a nominal

concentration of 10,000 ppmv in air for subsurface refuse boundary probe monitoring and sample analysis to comply with paragraph (e)(1) of Rule 1150.1, 25 ppmv in air for integrated sampl e analyses to comply with paragraph (e)(2) of Rule 1150.1 and 500 ppmv in air for instantaneous monitoring to comply with paragraph ( e)(3) of Rule
1150.1. 3.2.3 To meet the performance evaluation requiremen ts in Section 3.1.3 of

U.S. EPA Method 21, the instrument evaluation proce dures of Section
4.4 of U.S. EPA Method 21 shall be used. 3.2.4 The calibration procedures provided in Sectio n 4.2 of U.S. EPA

Method 21 shall be followed at the beginning of eac h day before commencing a surface monitoring survey.
3.3 Monitoring Procedures 3.3.1 The owner or operator shall monitor the landf ill disposal area for TOC measured as methane using the described portable eq uipment. 3.3.2 The sampling probe shall be placed at a dista nce of 0-3 inches above any location of the landfill to take the readings. 3.3.3 At a minimum, an individually identified 50,0 00 square foot grid shall be used and a walk pattern similar to that illustrate d in Figure 2 shall be implemented including areas where visual observatio ns indicate elevatedRule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 34

concentrations of landfill gas, such as distressed vegetation and cracks or seeps in the cover.
3.4 Recording the Results
3.4.1 Record the location and concentration of TOC measured as methane for any instantaneous reading of 200 ppmv or greater on a topographic map of the landfill, drawn to scale with the location o f both the grids and the gas collection system clearly marked and identified

. 3.4.2 Maintain and submit the results as specified in subdivision (f) of
Rule 1150.1.

4.0 LANDFILL GAS SAMPLE FROM GAS COLLECTION SYSTEM Paragraph (e)(5) Requirement of Rule 1150.1

4.1 Number of Samples Collect one monthly sample of landfill gas for anal ysis from the main gas collection header line entering the gas treatment a nd/or gas control system(s). 4.2 Sampling Procedure Collect approximately a 10-liter sample in a Tedlar bag or equivalent container over a continuous ten-minute period. 4.3 Analytical Procedures Samples collected shall be analyzed no later than 7 2 hours after collection for TOC using U.S. EPA Method 25, 40 CFR, Part 60, Appe ndix A analysis and for the TAC specified in Table 1 and upon written reque st, Table II, using U.S. EPA Compendium Method TO-14.
4.4 Chain of Custody (Required for samples sent to the lab) A custody sheet shall accompany the bag samples. E ach time a bag changes hands, it shall be logged on the custody sheet with the time of custody transfer recorded. Laboratory personnel shall record the co ndition of the sample (full, three-fourths full, one-half full, one-fourth full, or empty). An example of a custody sheet is shown in Figure 4.
4.5 Recording the Results
4.5.1 Record the volume concentration of both TOC m easured as methane and the volume concentration for the required TAC on a quality control sheet as shown in Figure 3. Include a topographic map dr awn to scale with theRule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 35

location of the gas collection and gas control syst ems clearly marked and
identified. 4.5.2 Maintain and submit the results as specified in subdivision (f) of
Rule 1150.1.

5.0 AMBIENT AIR SAMPLES AT THE LANDFILL PROPERTY
BOUNDARY Paragraph (e)(6) Requirement of Rule 1150.1

5.1 Number of Samples Monthly ambient air samples shall be collected for analysis at the landfill property boundary from both an upwind and downwind sampler s ited to provide good meteorological exposure to the predominant offshore (drainage land breeze) and onshore (sea breeze) wind flow patterns. The upwin d and downwind samples shall be collected simultaneously over two 12 hour periods beginning between 9:00 a.m. and 10:00 a.m., and 9:00 p.m. and 10:00 p .m. on the same day or different days. 5.2 Ambient Air Sampling Conditions Ambient air sampling shall be conducted on days whe n stable (offshore drainage) and unstable (onshore sea breeze) meteorological co nditions are representative for the season. Preferable sampling conditions are cha racterized by the following meteorological conditions: 5.2.1 Clear cool nights with wind speeds of two mil es per hour or less, and 5.2.2 Onshore sea breezes with wind speeds ten mile s per hour or less. No sampling will be conducted if the following adve rse meteorological conditions
exist: 5.2.3 Rain, 5.2.4 Average wind speeds greater than 15 miles per hour for any 30-minute period, or 5.2.5 Instantaneous wind speeds greater than 25 mil es per hour. Continuously recorded on-site wind speed and direct ion measurements required in paragraph (d)(17) of Rule 1150.1 will characterize the micrometeorology of the site and serve to verify that the meteorological cr iteria have been met during sampling.Rule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 36 5.3 Ambient Air Sampler Equipment Description An ambient air sampling unit consists of a 10-liter Tedlar bag, a DC-operated pump, stainless steel capillary tubing to control t he sample rate to the bag, a bypass valve to control the sample flow rate (and m inimize back pressure on the pump), a Rotameter for flow indication to aid in se tting the flow, a 24-hour clock timer to shut off the sampler at the end of the 24- hour sampling period, and associated tubing and connections (made of stainles s steel, Teflon, or borosilicate glass to minimize contamination and reactivity). T he physical layout of the sampler is shown in Figure 5. An alternate ambient air sampler may be used, provi ded that the landfill owner or operator can show an equivalency with the sampler s pecifications in Section 5.3 and shown in Figure 5. All alternatives shall be s ubmitted as specified in subdivision (i) of Rule 1150.1.
5.4 Ambient Air Sampler Equipment Specifications The equipment used when conducting air samples at a ny landfill property boundary shall meet the following specifications: 5.4.1 Power: one 12V DC marine battery. The marin e battery provides 12V DC to the pump and the clock. 5.4.2 Pump: one 12V DC pump. The diaphragm shall be made of nonlubricated Viton rubber. The maximum pump unloaded flow rate shall be 4.5 liters per minute. 5.4.3 Bag: One 10-liter Tedlar bag with a valve. The Tedlar bag shall be
enclosed in a LIGHT-SEALED CONTAINER. The valve is a push-pull type constructed of aluminum and stainless steel, w ith a Viton or Buna-N (butadiene acrylonitrile co-polymer) o-ring seal. 5.4.4 Rotameter: made of borosilicate glass and has a flow range of 3-to-50 cubic centimeters per minute. The scale is in mill imeters (mm) with major graduations (labeled) every 5 mm and minor gr aduations every 1

mm. 5.4.5 Air flow control orifice: 316 stainless stee l capillary tubing. 5.4.6 Bypass valve. 5.4.7 Fittings, tubing, and connectors: 315 stainle ss steel or Teflon. 5.4.8 Clock timer with an accuracy of better than 1 %.Rule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 37 5.5 Ambient Air Sample Analytical Procedures Samples collected must be analyzed no later than 72 hours after collection for TOC using U.S. EPA Method 25, 40 CFR, Part 60, Appe ndix A analysis or a portable FID that meets the requirements in Section 3.2 and for the TAC specified in Table 1 and upon written request, Table II, usin g U.S. EPA Compendium
Method TO-14.
5.6 Chain of Custody (Required for samples sent to the lab) A custody sheet shall accompany the bag samples. E ach time a bag changes hands, it shall be logged on the custody sheet with the time of custody transfer recorded. Laboratory personnel shall record the co ndition of the sample (full, three-fourths full, one-half full, one-fourth full, or empty). An example of a custody sheet is shown in Figure 4.
5.7 Recording the Results
5.7.1 Record the volume concentration of TOC measur ed as methane and the volume concentration of TAC for each sample on a qu ality control sheet as shown in Figure 3. Include a topographic map dr awn to scale with the location of both the upwind and downwind samplers a nd the gas collection and gas control systems clearly marked and identifi ed. 5.7.2 Record the wind speed and direction during th e 24-hour sampling period using the wind speed and direction monitoring syste m required in paragraph (d)(17) of Rule 1150.1. 5.7.3 Maintain and submit the results as specified in subdivision (f) of
Rule 1150.1.Rule 1150.1 (Cont.)(Amended April 1, 2011)(Attachment A Continued)1150.1 - 38Inlet ProbeTedlarBagRotameterBatteries+PumpCardboard BoxInOutPORTABLE INTEGRATED BAG SAMPLERPhysical LayoutFigure 1Rule 1150.1 (Cont.) (Amended April 1, 2011)

(Attachment A Continued)

1150.1 - 39 Typical Landfill Walk Pattern for a 50,000 Square Foot Grid

Figure 2 500 Feet 100 Feet

25 FeetRule 1150.1 (Cont.)(Amended April 1, 2011)(Attachment A Continued)1150.1 - 40TYPICAL QUALITY CONTROL SHEET•Prior to use, the Tedlar bag system shall be leak checked, evacuated and filled with purified nitrogenthree times to flush out the old sample.•All samples must be kept in LIGHT-SEALED CONTAINERSto avoid photochemical reactions.OPERATIONBAG SAMPLESCOMMENTSGrid orprobe #Date WindSpeedTimeOnTimeOffI.D.# ValveOpenRotameterReadingPump(On/Off)Signature:Figure 3Rule 1150.1 (Cont.)(Amended April 1, 2011)(Attachment A Continued)1150.1 - 41BAG SAMPLE CUSTODY FORMProjectDate:Bag (I.D. #)Condition Received in Lab*Bags Prepared By: Time:Date:Bags Taken Out By: Time:Bags Taken to Lab ByBags Received In Lab By: Time* F = 1/2 full to full, 0 = Overfull (Bulging), L =1/4 to 1/2 full,E = Less than 1/4 full but contains some sample, N= No sample at all.Figure 4Rule 1150.1 (Cont.)(Amended April 1, 2011)(Attachment A Continued)1150.1 - 42Sample BagClock24 VoltBattery-+Pump+-InletBypassValveRotometerCritical OrificeFigure 5AMBIENT AIR SAMPLERPhysical LayoutRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 43 TABLE 1 - CARCINOGENIC AND TOXIC AIR CONTAMINANTS

(Core Group) Paragraph (e)(2), Subparagraphs (k)(3)(F) and (k)(3 )(G) Requirements of
Rule 1150.1

1. Benzene C 6 H 6 2. Benzyl Chloride C 6 H 5 H 2 C1
3. Chlorobenzene C 6 H 5 C1 4. 1,2 Dibromoethane (Ethylene Dibromide) BrCH 2 CH 2 Br
5. Dichlorobenzene C 6 H 4 C1 2 6. 1,1 Dichloroethane (Ethylidene Chloride) CH 3 CHC1 2 7. 1,2 Dichloroethane (Ethylene Dichloride) C1H 2 H 2 C1 8. 1,1 Dichloroethene (Vinylidene Chloride) CH 2 : CC1 2 9. Dichloromethane (Methylene Chloride) CH 2 C1 2 10. Hydrogen Sulfide H 2 S 11. Tetrachloroethylene (Perchloroethylene) C1 2 C : CC1 2 12. Tetrachloromethane (Carbon Tetrachloride) CC1 4 13. Toluene C 6 H 5 CH 3 14. 1,1,1 Trichloroethane (Methyl Chloroform) CH 3 CC1 3 15. Trichloroethylene CHC1 : CC1 2 16. Trichloromethane (Chloroform) CHC1 3 17. Vinyl Chloride CH 2 : CHC1 18. Xylene C 6 H 4 (CH 3 ) 2Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 44 TABLE 2 - CARCINOGENIC AND TOXIC AIR CONTAMINANTS

(Supplemental Group) Paragraph (e)(2), Subparagraphs (k)(3)(F) and (k)(3 )(G) Requirements of
Rule 1150.1

1. Acetaldehyde CH3CHO
2. Acrolein CH2CHCHO 3. Acrylonitrile H2C : CHCN 4. Allyl Chloride H2C : CHCH2C1 5. Bromomethane (Methyl Bromide) CH3Br
6. Chlorinated Phenols 7. Chloroprene H2C : CHCC1 : CH2
8. Cresol CH3C6H4OH 9. Dialkyl Nitrosamines 10. 1,4 - Dioxane OCH2CH2OCH2CH2 11. Epichlorohydrin CH2OCHCH2C1 12. Ethylene Oxide CH2CH2O 13. Formaldehyde HCHO 14. Hexachlorocyclopentadiene C5C16
15. Nitrobenzene C6H5NO2
16. Phenol C6H5OH 17. Phosgene COC12 18. Polychlorinated Dibenzo-P-Dioxin 19. Polychlorinated Dibenzo Furan 20. Polychlorinated Biphenols 21. Polynuclear Aromatic Hydrocarbons 22. Propylene Oxide CH2-CH-CH3 23. Tetrahydrothiophene CH2CH2CH2CH2S 24. Thiophene CHCHCHCHSRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 45 

### Attachment B

TITLE 27. Environmental Protection

Division 2. Solid Waste
Subdivision 1. Consolidated Regulations for Treatme nt, Storage, Processing or Disposal of Solid Chapter 3. Criteria for All Waste Management Units, Facilities, and Disposal Sites

Subchapter S. Closure and Post-Closure Maintenance
Article 2. Closure and Post-Closure Maintenance St andards for Disposal Sites and
Landfills §21140. Section CIWMB -- Final Cover. (Tl4:§17773 )

(a) The final cover shall function with minimum mai ntenance and provide waste containment to protect public health and safety by controlling at a minimum, vectors, fire, odor, litter and landfill gas migration. The final cover shall also be compatible with postclosure land use. (b) In proposing a final cover design meeting the r equirements under §21090, the owner or operator shall assure that the proposal me ets the requirements of this section. Alternative final cover designs shall meet the perf ormance requirements of ¶(a) and for MSWLF units, 40 CFR 258.60(b); shall be approved by the enforcement agency for aspects of ¶(a). (c) The EA may require additional thickness, qualit y, and type of final cover depending on, but not limited to the following: (1) a need to control landfill gas emissions and fi res; (2) the future reuse of the site; and (3) provide access to all areas of the site as need ed for inspection of monitoring and control facilities, etc.

NOTE

Authority cited: Sections 40502 and 43020, Public R esources Code; and Section 66796.22 (d), Government Code. Reference: Sections 43021 and 43103, Public Resources Code; and Section 66796.22(d), Government Code.

HISTORY

1. New section filed 6-18-97; operative 7-18-97 (Re gister 97, No. 25).Rule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 46 

### Attachment C

TITLE 27. Environmental Protection Division 2. Solid Waste Subdivision 1. Consolidated Regulations for Treatm ent, Storage, Processing or Disposal of Solid Chapter 3. Criteria for All Waste Management Units , Facilities, and Disposal Sites Subchapter 2. Siting and Design Article 2. SWRCB -- Waste Classification and Manag ement §20200. SWRCB -- Applicability and Classification Criteria. (CI5: §2520)

(a) Concept--This article contains a waste classifi cation system which applies to solid wastes that cannot be discharged directly or indire ctly to waters of the state and which therefore must be discharged to waste management un its (Units) for treatment, storage, or disposal in accordance with the requirements of thi s division. Wastes which can be discharged directly or indirectly (e.g., by percolation ) to waters of the state under effluent or concentration limits that implement app licable water quality control plans (e.g., municipal or industrial effluent or process wastewater ) are not subject to the SWRCB-promulgated provisions of this division. Thi s waste classification system shall provide the basis for determining which wastes may be discharged at each class of Unit. Waste classifications are based on an assessment of the potential risk of water quality degradation associated with each category of waste. (1) The waste classifications in this article shall determine where the waste can be discharged unless the waste does not consist of or contain municipal solid waste (MSW) and the discharger establishes to the satisfaction of the RWQCB that a particular waste constituent or combination of constituents presents a lower risk of water quality degradation than indicated by classification accord ing to this article. (2) Discharges of wastes identified in §20210 or §2 0220 of this article shall be permitted only at Units which have been approved an d classified by the RWQCB in accordance with the criteria established in Article 3 of this subchapter, and for which WDRs have been prescribed or waived pursuant to Art icle 4, Subchapter 3, Chapter 4 of this subdivision (§21710 et seq.). Table 2.1 (of th is article) presents a summary of discharge options for each waste category. (b) Dedicated Units/Cells For Certain Wastes--The f ollowing wastes shall be discharged only at dedicated Units [or dedicated la ndfill cells (e.g., ash monofill cell )] which are designed and constructed to contain such wastes: (1) wastes which cause corrosion or decay, or other wise reduce or impair the integrity of containment structures; (2) wastes which, if mixed or commingled with other wastes can produce a violent reaction (including heat, pressure, fire or explosion), can produce toxic byproducts, or can produce any reaction product(s) which: (A) requires a higher level of containment; (B) is a restricted waste; or (C) impairs the integrity of containment structures

. (c) Waste Characterization--Dischargers shall be re sponsible for accurate characterization of wastes, including determination s of whether or not wastes will beRule 1150.1 (Cont.) (Amended April 1, 2011)

1150.1 - 47 compatible with containment features and other wast es at a Unit under ¶(b), and whether or not wastes are required to be managed as hazardo us wastes under Chapter 11 of Division 4.5 of Title 22 of this code. (d) Management of Liquids at Landfills and Waste Pi les--The following requirements apply to discharges of liquids at Class II waste pi les and at Class II and Class III landfills, except as otherwise required for MSW landfills by m ore-stringent state and federal requirements under SWRCB Resolution No. 93-62 secti on 2908 of Title 23 of this Code (see 40CFR258.28) [Note: see also definitions of "leachate” and "land fill gas condensate” in §20164 ]: (1) [Reserved.];

(2) wastes containing free liquids shall not be dis charged to a Class II waste pile. Any waste that contains liquid in excess of the moi sture-holding capacity of the waste in the Class II landfill, or which contains liquid in excess of the moisture-holding capacity as a result of waste management operations, compact ion, or settlement shall only be discharged to a surface impoundment or to another U nit with containment features equivalent to a surface impoundment; and (3) liquids or semi-solid waste (i.e., waste contai ning less than 50 percent solids, by weight), other than dewatered sewage or water treat ment sludge as described in §20220(c), shall not be discharged to Class III lan dfills. Exceptions may be granted by the RWQCB if the discharger can demonstrate that su ch discharge will not exceed the moisture-holding capacity of the landfill, either i nitially or as a result of waste management operations, compaction, or settlement, s o long as such discharge is not otherwise prohibited by applicable state or federal requirements.