(Adopted November 4, 2005)(Amended March 6, 2009)

RULE 1156. FURTHER REDUCTIONS OF PARTICULATE EMISSIONS FROM CEMENT MANUFACTURING FACILITIES

(a) Purpose The purpose of this rule is to further re duce particulate matter (PM) emissions from cement manufacturing facilities.

(b) Applicability This rule applies to all operations, mate rials handling, and transport at a cement manufacturing facility, including, but not limited to, kiln and clinker cooler, material storage, crushing, drying, screening, m illing, conveying, bulk loading and unloading systems, internal roadways, material transport, and track-out.

(c) Definitions (1) BAG LEAK DETECTION SYSTEM (BLDS) means a system that meets the minimum requirements specified under U. S. EPA 40 CFR Part 63, Subpart LLL, Section 1350 (m) to continuously monitor bag leakage and failure. (2) CEMENT MANUFACTURING FACILITY m eans any facility that engages in, or has been engaged in prior to N ovember 4, 2005, producing portland cement or associated products, as defined in the St andard Industrial Classification Manual as Industry No. 3241, Portland Cement Manufacturing. (3) CHEMICAL DUST SUPPRESSANT mean s any non-toxic chemical stabilizer
which is used as a treatment material to reduce fugitive dust emissions and its use is not prohibited by any other appli cable law and meets all applicable specifications required by any federal, state, or local water agency. (4) CLINKER means a product from the kiln which is used as a feedstock to make

cement. (5) CLINKER COOLER means equipment in to which clinker product leaving the kiln is placed to be cooled by air supplied by a forced draft or natural draft supply
system. (6) CONVEYING SYSTEM means a device fo r transporting materials from one piece of equipment or location to another piece of equipment or location within a facility. Conveying systems include, but are not limited to, the following: feeders, belt conveyors, bucket elevators and pneumatic systems.

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(7) CONTINUOUS OPACITY MONITORING SYSTEM (COMS) means a system that meets minimum requirements speci fied under U.S. EPA 40 CFR Part 60, Appendix B, to continuously monitor opacity. (8) CONVEYING SYSTEM TRANSFER POINT means a point where any material including, but not limited to, feed material, fuel, clinker or product, is transferred to or from a conveying system, or between separate parts of a conveying system. (9) COVERED CONVEYOR is a conveyor wh ere the top and side portion of the conveyor are covered by a removable c over to allow routine inspection and
maintenance. (10) DUST SUPPRESSANTS are water, hygr oscopic materials, or chemical stabilizers used as a treatment material to reduce fugitive dust emissions. (11) ENCLOSED CONVEYOR is any conve yor where the top, side and bottom portion of the conveyor system is encl osed except for points of loading and discharge and except for a removable c over to allow routine inspection and
maintenance. (12) ENCLOSED SCREENING EQUIPMENT means screening equipment where the top portion of the equipment is enclose d, except for the area where the materials are loaded to the screening equipment. (13) ENCLOSED STORAGE PILE means any stor age pile that is completely enclosed in a building or structure consisting of a solid roof and walls. (14) END OF WORK DAY means the end of a working period that may include one or more work shifts, but no later than 8 p.m. (15) EXISTING EQUIPMENT means any equi pment, process or operation having an existing valid AQMD permit that was issued prior to November 4, 2005. (16) FACILITY means any source or group of sources or other air contaminantemitting activities which are subject to this rule and are located on one or more contiguous properties within the AQMD, in actual physical contact or separated solely by a public roadway or other public right-of-way, and are owned or operated by the same person (or by persons under common control), or an outer continental shelf (OCS) source as dete rmined in 40 CFR Section 55.2. Such above-described groups, if noncontiguous, but connected only by land carrying a pipeline, shall not be considered one fac ility. Sources or installations involved in crude oil and gas production in Southern California Coastal or OCS Waters and transport of such crude oil and gas in Southern California Coastal or OCS Waters shall be included in the same facility wh ich is under the same ownership or use entitlement as the crude oil and gas production facility on-shore.

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(17) FINISH MILL means a roll crusher, ball and tube mill or other size reduction equipment used to grind clinker to a fine powder. Gypsum and other materials may be added to and blended with clinker in a finish mill. The finish mill also includes the air separator associated with the finish mill. (18) HAUL TRUCK means a diesel heavy-duty truck that has a loading capacity equal to or greater than 50 tons. (19) INACTIVE CLINKER PILE is a pile of clinker material that has not been disturbed, removed, and/or added to as a result of loading, unloading, and/or transferring activities for 30 (thirty) consecutive days. (20) KILN means a device, including any a ssociated preheater or precalciner devices that produce clinker by heating limestone and other materials for subsequent production of portland cement. (21) OPEN STORAGE PILE is any accumulati on of materials which attains a height of three (3) feet or more or a total su rface area of one hundred fifty (150) square feet or more. The open pile is define d as inactive when loading and unloading has not occurred in the previous 30 consecutive days. (22) OPERATOR means the operator of th e cement manufacturing facility subject to this rule unless otherwise specified. (23) PAVED ROAD means a road improved by covering with concrete, asphaltic concrete, recycled asphalt, or asphalt. (24) RAW MILL means a ball, tube, or ve rtical roller mill or other size reduction equipment used to grind materials to the appropriate size. Moisture may be added or removed from the materials during th e grinding operation. A raw mill may also include a raw material dryer and/or air separator. (25) ROAD means any route with evidence of repeated prior travel by vehicles. (26) STABILIZED SURFACE means any prev iously disturbed surface area or open storage pile which, through the application of dust suppressants, shows visual or other evidence of surface crusting, is resist ant to being the source of wind-driven fugitive dust, and is demonstrated to be stabilized by the applicable test methods contained in the Rule 403 Implementation Handbook. (27) STREET SWEEPER is a PM 10 efficient street sweeper approved pursuant to Rule
1186 – PM 10 Emissions from Paved and Unpaved Roads & Livestock Operations. (28) TOP PROCESS PARTICULATE EMITTERS means: (A) process equipment, including but not limited to the kiln, clinker cooler, raw mill, and finish mill, vented to air pollution control equipment, except open-top baghouses, that account for 60% of the total process particulate

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emissions at the facility, for the re quirement of using BLDS or COMS under paragraph (e)(2); or (B) process equipment, including but not limited to the kiln, clinker cooler, raw mill, and finish mill, vented to air pollution control equipment, that account for 80% of the total process particulate emissions at the facility for the monitoring, source testing a nd recordkeeping requirements under paragraph (e)(3), (e)(8) and subparagraph (f)(2)(D). (29) TRACK-OUT means any material that adheres to and agglomerates on the exterior surface of motor vehicles, haul trucks, and equipment (including tires) that has been released onto a paved road and can be removed by a vacuum sweeper or a broom sweeper under normal operating conditions. (30) VERIFIED FILTRATION PRODUCT means filtration products that are verified under the U.S. EPA Environmental Technology Verification program (ETV). (31) WET SUPPRESSION SYSTEM means a syst em that supplies ultra-fine droplets of water or chemical dust suppressant by atomization through means of using compressed air or applying high pressu re as specified by manufacturers to
minimize dust. (32) WIND-DRIVEN FUGITIVE DUST means particulate matter emissions from any disturbed surface area which is generated by wind action alone. (33) WIND FENCE means a system consisti ng of a stand alone structure supporting a wind fence fabric. The wind fence fabric shall have maximum porosity of 20%.

(d) Requirements The operator shall comply with the following requirements unless otherwise stated. (1) Visible Emissions (A) The operator of a facility shall not cause or allow the discharge into the atmosphere of visible emissions exceeding 10 percent opacity based on an average of 12 consecutive readings from any operation at the facility, except open piles, roadways and unpa ved areas, using EPA Opacity Test
Method 9. (B) For open piles, roadways and ot her unpaved areas, the operator of a facility shall not cause or allow the discharge into the atmosphere of visible emissions exceeding 20 percent opacity based on an average of 12 consecutive readings; or 50 percen t opacity based on 5 individual consecutive readings using SCAQMD Opacity Test Method 9B.

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(C) The operator of a facility shall not cause or allow any visible dust plume from exceeding 100 feet in any dir ection from any operations at the facility. (2) Loading, Unloading, and Transferring (A) The operator shall conduct material loading and unloading to and from trucks, railcars, or other modes of material transportation through an enclosed system that is vented to SCAQMD permitted air pollution control equipment that meets the requirements in paragraph (d)(6) and subparagraph (d)(1)(A) and is operated during loading and unloading activities. In the event the system consists of a building, the enclosed building shall have openings with overlapping flaps, sliding doors or other equally effective devices, as approved by the Executive Officer to meet the requirement in subparagraph (d)(1 )(A), which shall remain closed, except to allow trucks and railcars to enter and leave. (B) The operator shall cover or enclose all conveying systems and enclose all transfer points. During all conveyi ng activities, the enclosed transfer points and enclosed conveying systems shall be vented to a permitted air pollution control device that meets the requirements in subparagraph (d)(1)(A) and paragraph (d)(6) and is operated during all conveying
activities. The enclosure shall have access doors to allow routine inspection and maintenance. (C) The operator shall apply dust suppre ssants as necessary during material loading, unloading, and transferring activities, and at conveying system transfer points to dampen and stabilize the materials transported and prevent visible dust emissions genera ted to meet the requirement in subparagraph (d)(1)(A). (D) The operator shall install and mainta in as necessary dust curtains, shrouds, belt scrapers, and gaskets along the belt conveying system to contain dust, prevent spillage and carryback in order to minimize visible emissions. (E) The operator shall use appropriate equipment including, but not limited to, stackers or chutes, as necessary, to minimize the height from which materials fall into storage bins, silos, hoppers or open stock piles and reduce the amount of dust generated to meet the requirements in paragraphs (d)(1) and (d)(6).

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(3) Crushing, Screening, Milling, Gri nding, Blending, Drying, Heating, Mixing, Sacking, Palletizing, Packaging, and Other Related Operations (A) The operator shall enclose crushing, screening, milling, grinding, blending, drying, heating, mixing, sacking, palletizing, packaging and other related operations. The enclosed system shall be vented to permitted control equipment that meets the requirements in paragraph (d)(6) and subparagraph (d)(1)(A). The control equipment shall be operated during these operations. (B) In lieu of the configuration desc ribed in subparagraph (d)(3)(A), the operator of a primary crusher installe d and operated prior to November 4, 2005 may use wind fences on at least two sides of the primary crusher with one side facing the prevailing wi nds. The structure shall be equipped and operated with a wet suppression system. To implement this, the operator shall submit a permit modification application by May 4, 2006 for a primary crusher to enable th e Executive Officer to develop permit conditions to ensure that this air po llution control system is designed and operated to minimize particulate emissions. (C) The operator shall apply dust suppressants, as necessary, during all operations to dampen and stabilize th e materials processed and prevent visible emissions generated to meet the requirements in subparagraph (d)(1)(A). (4) Kilns and Clinker Coolers The operator shall not operate the kilns and clinker coolers unless the kilns and clinker coolers are vented to air pollu tion control equipment that meets the requirements in paragraph (d)(6) and subparagraph (d)(1)(A). (5) Material Storage (A) An operator that stores raw materials and products in a silo, bin or hopper shall vent the silo, bin or hopper to an air pollution control device that meets the requirements in subparagraph (d)(1)(A) and paragraph (d)(6). (B) No later than September 8, 2009, the operator shall conduct all clinker material storage and handling in an enclosed storage area that meets the requirements in subparagraph (d)(1)(A) and paragraph (d)(6). The enclosed storage area shall have opening(s) covered with overlapping flaps, and sliding door(s) or other equivalent device(s) approved by the Executive Officer, which shall remain cl osed at all times, except to allow
vehicles to enter or exit. Prior to the completion and operation of the

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enclosure, all clinker materials shall be stored and handled in the same manner as non-clinker materials as set forth in subparagraph (d)(5)(D). (C) If clinker material storage and handling activities occur more than 1,000 feet from, and inside, the facility property-line, the operator may comply with all of the following in lieu of the requirements of subparagraph (d)(5)(B) no later than September 8, 2009: (i) Utilize a three-sided barrier with roof, provided the open side is
covered with a wind fence materi al of a maximum 20% porosity, allowing a removable opening for vehicle access. The removable wind fence for vehicle access may be removed only during minor or routine maintenance activities, the creation or reclamation of outside storage piles, the importa tion of clinker from outside the facility, and reclamation of pl ant clean-up materials. The removable opening shall be less than 50% of the total surface area
of the wind fence and the amount of time shall be minimized to the extent feasible; (ii) Storage and handling of material that is immediately adjacent to the three-sided barrier due to space limitations inside the structure
shall be contained within an area next to the structure with a wind fence on at least two sides, with at least a 5 foot freeboard above the top of the storage pile to pr ovide wind sheltering, and shall be completely covered with an impervious tarp, revealing only the active disturbed portion during ma terial loading and unloading activities; (iii) Storage and handling of other active clinker material shall be conducted within an area surrounded on three sides by a barrier or
wind fences with one side of th e wind fence facing the prevailing
wind and at least a 5-foot freeboa rd above the top of the storage pile to provide wind sheltering. The clinker shall remain completely covered at all times w ith an impervious tarp, revealing only the active disturbed portion during material loading and unloading activities. The barrier or wind fence shall extend at least 20 feet beyond the active portion of the material at all times; and (iv) Inactive clinker material may be alternatively stored using a continuous and impervious tarp, covered at all times, provided

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records are kept demonstrating the inactive status of such stored
material. (D) For active open non-clinker material storage and handling, the operator shall comply with one of the following to meet the requirements of subparagraphs (d)(1)(B) and (d)(1)(C): (i) Apply chemical dust suppressant s to stabilize the entire surface area of the pile, except for areas of the pile that are actively disturbed during loading and unloading activities; or (ii) Install and maintain a three-sided barrier or wind fences with one side facing the prevailing winds a nd with at least two feet of visible freeboard from the top of the storage pile to provide wind sheltering, maintain surface stabili zation of the entire pile in a manner that meets the performance standards of subparagraphs (d)(1)(B) and (d)(1)(C), and store th e materials completely inside the three-sided structure at all times; or (iii) Install and maintain a three-sided barrier with roof, or wind fences with roof, to provide wind shelteri ng; maintain the open-side of the storage pile stabilized in a ma nner that meets the performance standards of subparagraphs (d)(1 )(B) and (d)(1)(C), and store the materials completely inside the three-sided structure at all times; or (iv) Install and maintain a tarp ove r the entire surface area of the storage pile, in a manner that meets the performance standards of subparagraphs (d)(1)(B) and (d)(1)(C), except for areas of the pile that are actively disturbed during loading and unloading activities. The tarp shall remain in place and provide cover at all times. (E) All inactive non-clinker piles shall be stored and handled in the same manner as non-clinker materials, as se t forth in subparagraph (d)(5)(D). The operator shall keep records demonstrating the inactive status of the non-clinker piles. (F) For open storage piles subject to subparagraph (d)(5)(D), the operator shall apply chemical dust suppressa nts or dust suppressants during any material loading and unloading to/f rom the open piles; and re-apply chemical dust suppressants or dust s uppressants to stabilize the disturbed surface areas of the open piles at the end of each work day in which loading and unloading activities were pe rformed to meet the performance standards of subparagraphs (d)(1)(B) and (d)(1)(C) .

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(6) Air Pollution Control Device (A) The operator shall install and mainta in an air pollution control system referred to in paragraphs (d)(2), (d )(3), (d)(4) and (d)(5) to meet the following performance standards measur ed with the approved source test in subdivision (g): (i) an outlet concentration of 0.01 grain PM per dry standard cubic feet for equipment installed prior to November 4, 2005; and (ii) a BACT outlet concentration not to exceed 0.005 grain PM per dry standard cubic feet for equipment installed on and after November 4, 2005. (B) The operator shall install and maintain a baghouse ventilation and hood system that meets a minimum capture velocity requirement specified in the applicable standards of the U.S. Industrial Ventilation Handbook,
American Conference of Governmental Industrial Hygienists, at the time
of installation. If modificati on to the baghouse ventilation and hood system is required to meet the appli cable standard, the operator shall be granted additional time up to December 31, 2006 to complete this process. (C) The operator shall meet the require ments in paragraph (d)(6) by December 31, 2006 for pulse-jet baghouses, and by December 31, 2010 for nonpulse-jet baghouses. (D) To show incremental progress towards the December 31, 2010 compliance date for non-pulse-jet baghouses, the operator shall submit to the Executive Officer a list of baghouse candidates for future modification or replacement by December 31, 2006. In addition, the operator shall submit a notification letter by December 31 of each year thereafter, starting in 2006, to demonstrate that the operator has completed at least 20% of the modification or replacement by 2006; 40% by 2007; 60% by 2008, 80% by 2009; and 100% by 2010. (7) Internal Roadways and Areas (A) Unpaved Roadways and Areas (i) For haul roads used by haul tr ucks to carry materials from the quarry to different locations with in the facility, the operator shall apply chemical dust suppressants in sufficient quantity and at least twice a year to stabilize the entir e unpaved haul road surface; post signs at the two ends stating that haul trucks shall use these roads unless traveling to the maintenance areas; and enforce the speed

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limit of 35 miles per hour or less to comply with the opacity limits in paragraph (d)(1). (ii) For other unpaved roadways and areas, the operator shall apply chemical dust suppressants in suffi cient quantity and at least twice a year to stabilize the surface, or apply gravel pad containing 1- inch or larger washed gravel to a depth of six inches; and enforce a speed limit of 15 miles per hour or less to comply with the opacity limits in paragraph (d)(1). (B) Paved Roads The operator shall sweep all intern al paved roads at least once each regular work day or more frequently if necessary to comply with the opacity limits in paragraph (d)(1). Sweeping frequency may be reduced on weekends, holidays, or days of measurable precipitation provided that the operator complies with the opacity limits in paragraph (d)(1) at all times. Sweepers purchased or leas ed after November 4, 2005 shall be Rule 1186-certified sweepers. (8) Track-Out (A) The operator shall pave the closest 0.25 miles of internal roads leading to the public roadways and ensure that a ll trucks use these roads exclusively when leaving the facility to preven t track-out of dust to the public roadways and to comply with the opacity limits in paragraph (d)(1). (B) If necessary to comply with the opacity limits in paragraph (d)(1), the operator shall install a rumble grate, truck washer, or wheel washer; and ensure that all trucks go through the ru mble grate, truck washer or wheel
washer such that the entire circum ference of each wheel or truck is cleaned before leaving the facility. (C) To prevent material spillage from trucks to public roadways and fugitive dust emissions during transport, a truc k driver on the facility shall ensure
that the cement truck hatches are clos ed and there is no track-out, and the operator shall provide truck cleaning facilities on-site. (D) The operator shall provide, at leas t once each calendar year, the “Fugitive Dust Advisory” flyers prepared by the District to any company doing business with the facility and which is subject to the requirements in subparagraph (d)(8)(C).

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(9) No Backsliding To prevent any backsliding from the curre nt level of control, the operator shall operate and maintain all existing equipment according to permit conditions stated in the permits approved by the Executive O fficer prior to November 4, 2005 at all
times. (10) Compliance Monitoring Plan (A) No later than June 8, 2009, the opera tor shall submit to the Executive Officer a complete compliance plan for wind monitoring and the monitoring, sampling, and analysis of hexavalent chromium, and pay a plan evaluation fee pursuant to Rule 306 – Plan Fees. The submitted plan will be disapproved if it does not m eet the provisions of subparagraph (d)(10)(B). The operator shall resubm it an approvable plan within 30 days from date of disapproval; otherwise, the operator shall be deemed in violation of this provision. (B) The monitoring plan submitted shall contain, at a minimum, the following: (i) Siting and monitoring protocols that comply with EPA’s and CARB’s guidance and/or protocols for measurement of hexavalent chromium, wind direction, and wi nd speed. A minimum of three fence-line monitoring stations are required for hexavalent chromium: one upwind and one dow nwind of the facility under the common prevailing wind directions , and one subject to approval by the Executive Officer to ensure maximum effectiveness of the monitoring to the most potentially affected receptor, such as nearest residential or business receptors relative to clinker storage areas or potential hexavalent chromium emitting sources. (ii) Breakdown provisions which include: (1) a statement that the operator will notify the Executiv e Officer in writing of the
breakdown within 24 hours of its occurrence. If the breakdown occurs on a Friday, over a week end, or on a national or state holiday observed by the facility, the facility shall report such breakdown on the following work day; (2) a repair schedule; and (3) an action plan with detaile d measures to be taken by the operator to ensure that there will be at least 70% data capture at each site by each monitoring system; (iii) Consent from the operator that allows the Executive Officer to conduct any co-located or audit sampling at any time;

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(iv) Sampling analysis protocols that comply with EPA and CARB’s appropriate guidance and/or protocols for hexavalent chromium. All samples shall be analyzed at a District-approved laboratory, which can be audited at any time; and (v) Any other relevant data and information required by the Executive
Officer. (C) The Executive Officer shall approve or disapprove the complete plan within 60 days from the submittal date. (D) The operator may file for a complian ce monitoring plan amendment in thefuture relative to monitor siting or other elements of the plan as more sitespecific data becomes available. (11) Hexavalent Chrome Monitoring and Other Requirements No later than six months from compliance plan approval or March 1, 2010, whichever occurs first, the operator of a cement manufacturing facility shall conduct hexavalent chromium ambient air monitoring as follows: (A) The operator shall conduct ambient air monitoring for hexavalent chromium in accordance with the appr oved monitoring plan set forth in subparagraph (d)(10)(B) or (d)(10)(D), as applicable. The hexavalent
chromium concentration from a 30-da y rolling average at each monitoring station shall not exceed 0.70 nanograms per cubic meter (ng/m 3 ), excluding background. 24-hour sampli ng shall be conducted once every third day according to the EPA 1-in-3-day sampling calendar. For monitoring sample retrieval in which collection occurs on a weekend or facility observed national or state holid ay, the sample may be collected the following business day. (B) The operator may conduct 24-hour sampling once every six days for hexavalent chromium if there is no single exceedance of the 0.70 ng/m 3 level during 12 continuous months of monitoring. On this sampling schedule, the hexavalent chromium concentration from a 90-day rolling average at each monitoring station shall not exceed 0.70 ng/m 3 , excluding background. If there is an exceedan ce while on this sampling schedule, sampling shall immediately revert back to once every three days. For monitoring sample retrieval in which collection occurs on a weekend or facility observed national or state holid ay, the sample may be collected the following business day. (C) For facilities that elect to comply with (d)(5)(C), a ny exceedance of the concentrations listed in clauses (d )(11)(A) or (d)(11)(B) will require

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enclosure of all clinker materials st orage and handling if the Executive Officer confirms, through wind event monitoring data, that the cement manufacturing facility is the source of violation. The facility operator may select one of the following enclos ure schedule: 25% of the facility’s five-year annual average clinker mate rial stored and handled, by weight, no later than 12 months from the date of the exceedance; and an incremental 25% per subsequent year until completion; or complete the
total enclosure within 24 months from the date of exceedance. (12) Particulate Matter (PM10) Monitoring and Other Requirements The operator of the cement manufacturi ng facility who accrues three or more approved notices of violation for an exceedance of the upwind/downwind level specified in Rule 403 within a 36-mont h period shall conduct PM10 ambient air monitoring. An amendment to the compliance monitoring plan to include PM10 monitoring protocols and procedures shall be filed within 90 days of the date of the third approved notice of violation. The monitoring equipment shall be installed and operated within 6 months fr om the date of modified plan approval and no later than one year from the date of the third approved notice of violation. (A) The operator shall conduct continuous and real-time ambient air monitoring for PM10, using a continuous monitoring system, in accordance with a monitoring plan a pproved by the Executive Officer in a manner as set forth in subparagra phs (d)(10)(B) or (d)(10)(D), as applicable. The differences of PM10 concentrations from any two monitoring sites which represent upwind and downwind concentrations shall not exceed the amount and averag ing time period specified in Rule
403. (B) The operator shall apply dust s uppressants on all openly stored nonclinker materials, unpaved roads, and unpaved areas within the facility, as well as take steps to decrease clinker dust, if the PM10 difference(s) set forth in Rule 403 are exceeded at any time.

(13) Wind Monitoring (A) No later than September 8, 2009, the operator shall install and operate wind monitoring equipment to conduc t hourly wind monitoring according to a protocol approved by the Executive Officer. (B) On and after the date of opera tion of the wind monitoring equipment pursuant to subparagraph (d)(13)(A), the operator shall cease all open handling of clinker material for a two-hour period in the event that

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instantaneous wind speeds exceed 25 miles per hour (mph), and if such wind speeds subsequently exceed 25 mph, a new two-hour period shall begin. During the aforementioned two-hour period, the facility would be exempt from the requirement of subparagraph (d)(1)(C) if the open handling of clinker material is ceas ed, provided that dust controls as required by District rules are applie d; and unpaved roads are stabilized upon register of the high wind event via the wind monitoring equipment.

(e) Monitoring and Source Testing (1) For the kilns and clinker coolers, the operator shall continuously monitor and record operating parameters including, but not limited to, flue gas flow rates and pressure drops across the baghouses to monitor baghouse performance and ensure compliance with the opacity limit in subparagraph (d)(1)(A). (2) For all new baghouses greater than or equal to 10,000 actual cubic feet per minute, and for all existing bahouses of the top process particulate emitters as defined under subparagraph (c)(28)(A), the operator shall install, operate,
calibrate and maintain a COMS or BL DS to monitor baghouse performance and ensure compliance with the opacity limit in subparagraph (d)(1)(A). (3) The operator shall conduct visible emission observations with EPA Method 22 for process equipment equipped with air pollution control equipment at the following frequency: (i) Weekly for top process particul ate emitters defined under subparagraph (c)(28)(B) that are not equipped with BLDS or COMS; (ii) Monthly for top process particul ate emitters defined under subparagraph (c)(28)(B) that are equipped with BLDS or COMS; and (iii) Monthly for other process equipment. (4) The operator shall monitor and record pertinent operating parameters, such as pressure drops, according to the Operation and Maintenance Procedure in paragraph (e)(12) to monitor the perfor mance of air pollution control equipment and ensure compliance with the opacity limit in subparagraph (d)(1)(A). (5) If the operator receives an alarm from the BLDS, or COMS, the operator shall immediately conduct an EPA Method 22 test and implement all necessary
corrective actions to minimize emissions. (6) If the operator observes visible emi ssions during any EPA Method 22 test, the operator shall immediately implement all necessary corrective actions to

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minimize emissions, and conduct EPA Met hod 9 test within one hour of any
observation of visible emissions. (7) For the kilns and clinker coolers, th e operator shall conduct an annual compliance
source test in accordance with the test me thods in subdivision (g) to demonstrate compliance with the emission limit(s) in subdivision (d). The first annual compliance source test in accordance with an approved source test protocol shall be conducted within ninety (90) calendar days after the compliance date specified in subdivision (d). The operator shall submit a source test protocol to the Executive Officer no later than sixty (60) calendar days prior to the proposed test date for the Executive Officer's approval fo r the first compliance source test. The testing frequency may be reduced to on ce every 24 calendar months if the two
most recent consecutive annual source te sts demonstrate compliance with the limits. Upon notification by the Executive O fficer, the testing frequency shall be reverted back to annual testing if any s ubsequent source test fails to demonstrate compliance with the limits. In lieu of annual testing, any operator who elects to use all verified filtration products in its baghouses shall conduct a compliance test every five years. (8) By February 4, 2006, the operator shall provide the Executive Officer a list of the top process particulate emitters as defined under subparagraph (c)(28)(B), and the proposed testing schedule for these equipment. The operator shall conduct compliance source tests on representative baghouses within each process system and submit test results for these processes every 5 years, with at least two source tests conducted in any calendar year. If there are any changes to the list of equipment to be tested or the testi ng schedule, the operator shall notify the Executive Officer 60 calendar days before the test date. (9) The operator shall not be required to te st non-operational equipment, which is not in operation for at least 6 consecutive m onths prior to scheduled testing, as indicated in paragraph (e)(8) provided th at the operator shall conduct such test within one month after resuming operation. (10) During any compliance source test, the operator shall monitor and record, at a minimum, all operating data for the selected operating parameters of the control equipment and the process equipment and submit this data with the test report. (11) The operator shall submit a complete test report for any compliance source test to the Executive Officer no later than sixty ( 60) calendar days of completion of the

source test.

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(12) Operation and Maintenance Procedures (A) The operator shall develop and implement an Operation and Maintenance Procedure to ensure that the perf ormance of the air pollution control equipment is continuously maintained and operated. The Operation and
Maintenance Procedure shall include , at a minimum, information on monitoring and recordkeeping procedures, routine maintenance procedures, corrective and preventive actions for the air pollution control equipment, and training related to EPA Method 22, EPA Opacity Test Method 9 and SCAQMD Opacity Test Method 9B, and other applicable information to demonstrate compliance with this rule. (B) The operator shall develop and implement an Operation and Maintenance Procedure that would require sufficien t maintenance of internal roadways and areas, prompt cleanup of any pile of material spillage or carry-back, and application of chemical dust suppr essant or other dust control methods
to maintain surface stabilization of th e open piles, spillage and carry-back to ensure compliance with the opacity standards in paragraph (d)(1) at all
times. (C) The operator shall develop and maintain the Operation and Maintenance Procedures described under subparagraphs (e)(12)(A) and (e)(12)(B)
within 6 months after November 4, 2005, and shall make the Operation
and Maintenance Procedures ava ilable to the Executive Officer upon
request.

(f) Reporting and Recordkeeping (1) The operator shall maintain all record s and information required to demonstrate compliance with the provisions of this rule in a manner approved by the Executive Officer for a period of at least fi ve years which shall be made available to the Executive Officer upon request. (2) The operator of a facility shall keep, at a minimum, the following records to demonstrate compliance: (A) Daily records of applying chemical dust suppressants, watering, sweeping and cleaning activities; (B) Appropriate records, on at least a monthly basis, for primary crushers, kilns, raw mills, and finish mills, production records of clinkers and cements and records of raw materials delivered to the facility in order to determine emissions;

1156 - 16Rule 1156 (Cont.) (Amended March 6, 2009)

(C) Test reports to demonstrate comp liance with the emission standards in subdivision (d) including, but not limite d to, PM emission rates, and opacity readings; (D) Records of equipment malfunction a nd repair for the air pollution control equipment of the top process particulate emitters specified under subparagraph (c)(28)(B); (E) Daily records of all material handling, including loading and unloading, and storage pursuant to paragraphs (d)(2) and (d)(5); (F) Monitoring data pursuant to subparagraphs (d)(11), and (d)(12) as applicable, and supporting documenta tion, including, but not limited to chains of custody and laboratory results; (G) Hourly records of wind speed a nd direction pursuant to subparagraph (d)(13); (H) Records of all maintenance activitie s pursuant to clause (d)(5)(C)(i) and paragraph (h)(7), including any equipment testing after the repairs and duration of wind fence removal; (I) Records of clinker pile reclamati on, importation, and transport pursuant to clause (d)(5)(C)(i), including duration of wind fence removal; and (J) Records of all vehicle traffic and monthly average road trips pursuant to paragraph (h)(4). (3) Monitoring data shall be reported monthly to, and in an electronic format specified by, the Executive Officer. In the event the facility operator finds that an exceedance of the levels specified in s ubparagraphs (d)(11)(A), (d)(11)(B), or (d)(12)(A) as applicable has occurred, th e operator shall report in writing such finding to the Executive Officer, and follow up with a phone call the next business day after such finding.

(g) Test Methods and Calculation (1) The operator shall use the following s ource test methods, as applicable, to
determine the PM emission rates. All s ource test methods referenced below shall be the most recent version issued by the respective organization. All test results in units of grains/dscf shall be determined as before the addition of any dilution or air, if present, that was not a part of the stream(s) processed by the device that
was tested. (A) SCAQMD Source Test Method 1.1 or 1.2 – Velocity and Sample Traverse Points;

1156 - 17Rule 1156 (Cont.) (Amended March 6, 2009)

(B) SCAQMD Source Test Method 2.1 or 2.3 – Stack Gas Flow Rate; (C) SCAQMD Source Test Method 3.1 – Stack Gas Density; (D) SCAQMD Source Test Method 4.1 – Stack Gas Moisture; (E) SCAQMD Source Test Method 5.2 or 5.3 - Determination of Particulate Matter Emissions in which reagent grade acetone shall be used to recover samples from the components of the sampling train located before the particulate filter; (F) EPA Source Test Method 5 with the im pinger analysis may be used in lieu of SCAQMD Source Test Method 5.2 or 5.3. (G) EPA Source Test Method 5D with th e impinger analysis may be used to measure PM emissions from positive pressure fabric filters. (2) Measurement of particulate matter emi ssions from the cement kiln shall provide
for a correction of sulfur dioxide emissi ons collected in the particulate matter samples. Any measured gaseous sulfur dioxide emissions shall be excluded from the measurement of particulate matter em issions by subtracting from the mass of material collected in any impingers a mass equivalent to the amount of measured sulfur dioxide emissions based upon sulf uric acid dihydrate as specified in SCAQMD Source Test Methods 5.2 or 5.3. (3) Source tests for PM shall be taken and th e average of the samples shall be used to determine the applicable emission ra te in accordance with the following requirements: (A) Simultaneous duplicate samples shall be obtained unless the operator
demonstrates to the satisfaction of the Executive Officer that it is not physically feasible to do so, in which case the operator shall take sequential triplicate samples; (B) All samples must have minimum samp ling volume of 120 cubic feet or a minimum PM catch of 6 milligrams per sample shall be collected; (C) For duplicate samples, the source test shall be deemed invalid if the difference between the two samples is greater than 35% of the average of the two samples in the applicable units specified in subdivision (d) and if the difference between the sample catches normalized to the average sampling volume is greater than 3.5 milligrams. If the source test is deemed invalid, the test shall be repeated; and (D) For triplicate samples, upon approval of the Executive Officer or designee, if the operator can demonstrate that the process conditions including, but not limited to, the throughput, quantity, type, and quality of all feedstock

1156 - 18Rule 1156 (Cont.) (Amended March 6, 2009)

to the equipment process, and the emission control equipment conditions have not changed throughout the sequen tial test period, then the operator may apply the Dixon outlier test at the 95% significance level to check for and discard one outlier, and shall us e the average of the two remaining samples to determine PM emissions. (4) The operator may use alternative or equi valent source test methods, as defined in U.S. EPA 40 CFR 60.2, if they are approved in writing by the Executive Officer, the California Air Resources Board, a nd the U.S. Environmental Protection Agency. (5) The operator shall use a test labor atory approved under the SCAQMD Laboratory Approval Program for the source test met hods cited in this subdivision if such approved lab exists. If there is no a pproved 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 appropriate SCAQMD protocols and procedures. (6) The operator shall use the methods specified in the SCAQMD Rule 403 Implementation Handbook to determine threshold friction velocity and stabilized surface; and EPA Opacity Test Met hod 9 and Method 22, or SCAQMD Opacity Test Method 9B to determine opacity. (7) When more than one source test me thod or set of source test methods are specified for any testing, the application of these source test methods to a specific set of test conditions is subject to a pproval by the Executive Officer. In addition, a violation established by any one of the specified source test methods or set of
source test methods shall constitute a violation of the rule.

(h) Exemptions (1) The operator is exempt from installing a three-sided barrier or enclosure, or using the test methods in the SCAQMD Rule 403 Implementation Handbook for the demonstration of surface stabilization for ope n storage piles if 90% of the pile’s mass consists of materials that are larger than 1⁄2 inch. Applicability of this exemption shall be determined through th e measurement of any composite sample of at least 10 pounds taken from a minimu m depth of 12 inches below the pile surface, and from various locations in the pile, but not from within 12 inches from the base of the pile. This exemption is limited to open storage piles that contain only materials other than clinker, providi ng that such piles meet the performance standards in subparagraphs (d)(1)(B) and (d)(1)(C).

1156 - 19Rule 1156 (Cont.) (Amended March 6, 2009)

(2) The operator is exempt from the use of chemical dust suppressants for internal unpaved roads if the use of applicable chemical dust suppressants on that specific unpaved road violates the rules and/or regulations of the local Water Quality Control Board or other government agency provided the operator uses water in sufficient quantity and frequency to stabilize the road surface and the operator notifies the Executive Officer in writing 30 days prior to the use of water. (3) Haul trucks are not required to use designa ted roads for haul trucks if they travel on unpaved roads complying with the requirements in clause (d)(7)(A)(ii). (4) The operator is exempt from the use of chemical dust suppressants in clause (d)(7)(A)(ii) where a road is used less th an a monthly average of twice a day by a designated vehicle at a speed limit less than 15 miles per hour. (5) The operator is exempt from the use of chemical dust suppressants on unpaved areas specified in clause (d)(7)(A)(ii) during a period for demolition activities of no longer than six (6) calendar months provided that the operator uses water in sufficient quantity and frequency to stab ilize the unpaved areas, meets the opacity requirements in subparagraphs (d)(1)(B) a nd (C) at all times, and keeps sufficient records to demonstrate compliance. (6) With the exception of primary crushing, open material storage piles, and covers and existing enclosures for conveying system s, the provisions of this rule shall not apply to equipment or operations th at are subject to Rule 1157 or Rule 1158 located at the cement manufacturing facilities, provided that there is no backsliding from the current level of cont rol as stated in the permits approved by the Executive Officer prior to Novemb er 4, 2005 or as required under Rule 1157 and Rule 1158, whichever is more stringent. (7) The operator is exempt from the require ments in clause (d)(5)(C)(i) in the event the wind fence material needs to be removed to perform periodic maintenance of the clinker crane or building. During the time the wind fence material is removed, the clinker crane shall not activ ely transport clinker material in the building, except for post maintenance equipment testing. (8) During day(s) in which the instantaneous wind speeds exceed 25 mph using the on-site wind monitoring equipment pursuant to (d)(13)(A), the operator is exempt
from the hexavalent chromium and PM10 averaging provisions of subparagraphs (d)(11)(A) and (d)(11)(B), and (d)(12 )(A) as applicable, provided all open handling of clinker material is ceased and dust controls are applied pursuant to subparagraph (d)(13)(B). If the Execu tive Officer determines a significant potential of re-entrained hexavalent chromium containing dust from the facility

1156 - 20Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 21 exists during such high wind events, th e operator shall implement an approved Mitigation Monitoring Plan to minimize exposure to the surrounding area and to ensure implementation of all applicable dust control measures to meet the requirements of subparagraphs (d)(11)(A ) and (d)(11)(B), and (d)(12)(A), as applicable. The Mitigation Monitoring Plan is due 90 days, inclusive of appropriate plan fees pursuant to Rule 306, after notification by the Executive
Officer.