1156 - 1 (Adopted November 4, 2005)(Amended March 6, 2009)

RULE 1156. FURTHER REDUCTIONS OF PARTICULATE EMISSI ONS FROM

CEMENT MANUFACTURING FACILITIES

(a) Purpose The purpose of this rule is to further reduce parti culate matter (PM) emissions from cement manufacturing facilities.

(b) Applicability This rule applies to all operations, materials hand ling, and transport at a cement manufacturing facility, including, but not limited to, kiln and clinker cooler, material storage, crushing, drying, screening, milling, conv eying, 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 CF R Part 63, Subpart LLL, Section 1350 (m) to continuously monitor bag leakag e and failure. (2) CEMENT MANUFACTURING FACILITY means any facilit y that engages in, or has been engaged in prior to November 4, 2005, prod ucing portland cement or associated products, as defined in the Standard Ind ustrial Classification Manual as Industry No. 3241, Portland Cement Manufacturing. (3) CHEMICAL DUST SUPPRESSANT means any non-toxic c hemical stabilizer which is used as a treatment material to reduce fug itive dust emissions and its use is not prohibited by any other applicable law and m eets all applicable specifications required by any federal, state, or l ocal water agency. (4) CLINKER means a product from the kiln which is used as a feedstock to make

cement. (5) CLINKER COOLER means equipment into which clink er product leaving the kiln is placed to be cooled by air supplied by a fo rced draft or natural draft supply
system. (6) CONVEYING SYSTEM means a device for transportin g materials from one piece of equipment or location to another piece of equipment or location within a facility. Conveying systems include, but are not li mited to, the following: feeders, belt conveyors, bucket elevators and pneumatic syst ems.Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 2 (7) CONTINUOUS OPACITY MONITORING SYSTEM (COMS) mea ns a system that meets minimum requirements specified under U.S . EPA 40 CFR Part 60, Appendix B, to continuously monitor opacity. (8) CONVEYING SYSTEM TRANSFER POINT means a point w here 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 where the top an d side portion of the conveyor are covered by a removable cover to allow routine inspection and

maintenance. (10) DUST SUPPRESSANTS are water, hygroscopic mater ials, or chemical stabilizers used as a treatment material to reduce fugitive dus t emissions. (11) ENCLOSED CONVEYOR is any conveyor where the to p, side and bottom portion of the conveyor system is enclosed except f or points of loading and discharge and except for a removable cover to allow routine inspection and

maintenance. (12) ENCLOSED SCREENING EQUIPMENT means screening e quipment where the top portion of the equipment is enclosed, except fo r the area where the materials are loaded to the screening equipment. (13) ENCLOSED STORAGE PILE means any storage pile t hat is completely enclosed in a building or structure consisting of a solid ro of and walls. (14) END OF WORK DAY means the end of a working per iod that may include one or more work shifts, but no later than 8 p.m. (15) EXISTING EQUIPMENT means any equipment, proces s 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 ph ysical 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 co mmon control), or an outer continental shelf (OCS) source as determined in 40 CFR Section 55.2. Such above-described groups, if noncontiguous, but conne cted only by land carrying a pipeline, shall not be considered one facility. So urces 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 Cal ifornia Coastal or OCS Waters shall be included in the same facility which is und er the same ownership or use entitlement as the crude oil and gas production fac ility on-shore.Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 3 (17) FINISH MILL means a roll crusher, ball and tub e mill or other size reduction equipment used to grind clinker to a fine powder. G ypsum and other materials may be added to and blended with clinker in a finis h mill. The finish mill also includes the air separator associated with the fini sh mill. (18) HAUL TRUCK means a diesel heavy-duty truck tha t has a loading capacity equal to or greater than 50 tons. (19) INACTIVE CLINKER PILE is a pile of clinker mat erial 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 associated 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 accumulation of mater ials which attains a height of three (3) feet or more or a total surface area o f one hundred fifty (150) square feet or more. The open pile is defined as inactive when loading and unloading has not occurred in the previous 30 consecutive days. (22) OPERATOR means the operator of the cement manu facturing facility subject to this rule unless otherwise specified. (23) PAVED ROAD means a road improved by covering w ith concrete, asphaltic concrete, recycled asphalt, or asphalt. (24) RAW MILL means a ball, tube, or vertical rolle r mill or other size reduction equipment used to grind materials to the appropriat e size. Moisture may be added or removed from the materials during the grinding o peration. 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 previously distur bed surface area or open storage pile which, through the application of dust suppressants, shows visual or other evidence of surface crusting, is resistant 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 tot al process particulateRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 4 emissions at the facility, for the requirement of u sing 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 em issions at the facility for the monitoring, source testing and recordkeeping re quirements under paragraph (e)(3), (e)(8) and subparagraph (f)(2)(D)

. (29) TRACK-OUT means any material that adheres to a nd agglomerates on the exterior surface of motor vehicles, haul trucks, an d 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 c onditions. (30) VERIFIED FILTRATION PRODUCT means filtration p roducts that are verified under the U.S. EPA Environmental Technology Verific ation program (ETV). (31) WET SUPPRESSION SYSTEM means a system that sup plies ultra-fine droplets of water or chemical dust suppressant by atomizatio n through means of using compressed air or applying high pressure as specifi ed by manufacturers to

minimize dust. (32) WIND-DRIVEN FUGITIVE DUST means particulate ma tter emissions from any disturbed surface area which is generated by wind a ction alone. (33) WIND FENCE means a system consisting of a stan d alone structure supporting a

wind fence fabric. The wind fence fabric shall hav e maximum porosity of 20%.

(d) Requirements The operator shall comply with the following requir ements unless otherwise stated. (1) Visible Emissions (A) The operator of a facility shall not cause or a llow the discharge into the atmosphere of visible emissions exceeding 10 percen t opacity based on an average of 12 consecutive readings from any operati on at the facility, except open piles, roadways and unpaved areas, usin g EPA Opacity Test

Method 9. (B) For open piles, roadways and other unpaved area s, the operator of a facility shall not cause or allow the discharge int o the atmosphere of visible emissions exceeding 20 percent opacity base d on an average of 12 consecutive readings; or 50 percent opacity based o n 5 individual consecutive readings using SCAQMD Opacity Test Meth od 9B.Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 5 (C) The operator of a facility shall not cause or a llow any visible dust plume from exceeding 100 feet in any direction from any o perations 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 transp ortation 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 loadi ng 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 Execu tive 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 conveyi ng systems and enclose all transfer points. During all conveying activities, the enclosed transfer points and enclosed conveying systems shall be vent ed to a permitted air pollution control device that meets the requirement s in subparagraph (d)(1)(A) and paragraph (d)(6) and is operated duri ng all conveying

activities. The enclosure shall have access doors to allow routine inspection and maintenance. (C) The operator shall apply dust suppressants as n ecessary during material loading, unloading, and transferring activities, an d at conveying system transfer points to dampen and stabilize the materia ls transported and prevent visible dust emissions generated to meet th e requirement in subparagraph (d)(1)(A). (D) The operator shall install and maintain as nece ssary 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 in cluding, but not limited to, stackers or chutes, as necessary, to minimize the h eight from which materials fall into storage bins, silos, hoppers or open stock piles and reduce the amount of dust generated to meet the req uirements in paragraphs (d)(1) and (d)(6).Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 6 (3) Crushing, Screening, Milling, Grinding, Blendin g, 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, pack aging 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 shal l be operated during these operations. (B) In lieu of the configuration described in subpa ragraph (d)(3)(A), the operator of a primary crusher installed and operate d prior to November 4, 2005 may use wind fences on at least two sides of t he primary crusher with one side facing the prevailing winds. The structur e shall be equipped and operated with a wet suppression system. To impleme nt this, the operator shall submit a permit modification application by M ay 4, 2006 for a primary crusher to enable the Executive Officer to develop permit conditions to ensure that this air pollution contro l 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 the materials pr ocessed and prevent visible emissions generated to meet the requirement s in subparagraph (d)(1)(A). (4) Kilns and Clinker Coolers The operator shall not operate the kilns and clinke r coolers unless the kilns and clinker coolers are vented to air pollution 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 produ cts in a silo, bin or hopper shall vent the silo, bin or hopper to an air pollut ion control device that meets the requirements in subparagraph (d)(1)(A) an d paragraph (d)(6). (B) No later than September 8, 2009, the operator s hall conduct all clinker material storage and handling in an enclosed storag e area that meets the requirements in subparagraph (d)(1)(A) and paragrap h (d)(6). The enclosed storage area shall have opening(s) covered with overlapping flaps, and sliding door(s) or other equivalent devi ce(s) approved by the Executive Officer, which shall remain closed at all times, except to allow vehicles to enter or exit. Prior to the completion and operation of theRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 7 enclosure, all clinker materials shall be stored an d handled in the same

manner as non-clinker materials as set forth in sub paragraph (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 requiremen ts of subparagraph (d)(5)(B) no later than September 8, 2009: (i) Utilize a three-sided barrier with roof, provided t he open side is

covered with a wind fence material of a maximum 20% porosity, allowing a removable opening for vehicle access. T he removable wind fence for vehicle access may be removed only d uring minor or routine maintenance activities, the creation or reclamation of outside storage piles, the importation of clinker f rom outside the facility, and reclamation of plant clean-up materia ls. The removable opening shall be less than 50% of the tot al surface area

of the wind fence and the amount of time shall be m inimized to the extent feasible; (ii) Storage and handling of material that is immediatel y adjacent to the three-sided barrier due to space limitations in side the structure

shall be contained within an area next to the struc ture with a wind fence on at least two sides, with at least a 5 foot freeboard above the top of the storage pile to provide wind shelter ing, and shall be completely covered with an impervious tarp, reveali ng only the active disturbed portion during material loading an d unloading activities; (iii) Storage and handling of other active clinker materi al shall be

conducted within an area surrounded on three sides by a barrier or wind fences with one side of the wind fence facing the prevailing wind and at least a 5-foot freeboard above the top of the storage pile to provide wind sheltering. The clinker shall remain completely covered at all times with an impervious tarp, revealing only the active disturbed portion during material l oading and unloading activities. The barrier or wind fence sh all extend at least 20 feet beyond the active portion of the material a t all times; and (iv) Inactive clinker material may be alternatively stor ed using a continuous and impervious tarp, covered at all time s, providedRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 8 records are kept demonstrating the inactive status of such stored

material. (D) For active open non-clinker material storage an d 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 suppressants to stabilize t he 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 and with at least two feet of visible freeboard from the top of the storage pile to provi de wind sheltering, maintain surface stabilization of the e ntire pile in a manner that meets the performance standards of subp aragraphs (d)(1)(B) and (d)(1)(C), and store the materials co mpletely inside the three-sided structure at all times; or (iii) Install and maintain a three-sided barrier with roo f, or wind fences with roof, to provide wind sheltering; maintain the open-side of the storage pile stabilized in a manner that meets the performance standards of subparagraphs (d)(1)(B) and (d)(1)(C), and store the materials completely inside the three-sided structu re at all times; or (iv) Install and maintain a tarp over the entire surface area of the storage pile, in a manner that meets the performanc e standards of subparagraphs (d)(1)(B) and (d)(1)(C), except for a reas of the pile that are actively disturbed during loading and unlo ading 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 set forth in su bparagraph (d)(5)(D). The operator shall keep records demonstrating the i nactive status of the non-clinker piles. (F) For open storage piles subject to subparagraph (d)(5)(D), the operator shall apply chemical dust suppressants or dust suppressan ts during any material loading and unloading to/from the open piles; and r e-apply chemical dust suppressants or dust suppressants to stabilize the disturbed surface areas of the open piles at the end of each work day in which loading and unloading activities were performed to meet the performance s tandards of subparagraphs (d)(1)(B) and (d)(1)(C) .Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 9 (6) Air Pollution Control Device (A) The operator shall install and maintain an air poll ution control system referred to in paragraphs (d)(2), (d)(3), (d)(4) an d (d)(5) to meet the following performance standards measured with the a pproved source test in subdivision (g): (i) an outlet concentration of 0.01 grain PM per dry st andard cubic feet for equipment installed prior to November 4, 2005; and (ii) a BACT outlet concentration not to exceed 0.005 gra in PM per dry standard cubic feet for equipment installed on and after November 4, 2005. (B) The operator shall install and maintain a bagho use ventilation and hood system that meets a minimum capture velocity requir ement specified in the applicable standards of the U.S. Industrial Ventila tion Handbook, American Conference of Governmental Industrial Hygi enists, at the time of installation. If modification to the baghouse v entilation and hood system is required to meet the applicable standard, the operator shall be granted additional time up to December 31, 2006 to complete this process. (C) The operator shall meet the requirements in par agraph (d)(6) by December 31, 2006 for pulse-jet baghouses, and by December 3 1, 2010 for nonpulse-jet baghouses. (D) To show incremental progress towards the Decemb er 31, 2010 compliance date for non-pulse-jet baghouses, the operator shal l 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 t hereafter, starting in 2006, to demonstrate that the operator has complete d at least 20% of the modification or replacement by 2006; 40% by 2007; 6 0% 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 trucks to carry mat erials from the quarry to different locations within the facility, the operator shall apply chemical dust suppressants in sufficient quan tity and at least twice a year to stabilize the entire unpaved haul r oad surface; post signs at the two ends stating that haul trucks shal l use these roads unless traveling to the maintenance areas; and enfo rce the speedRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 10 limit of 35 miles per hour or less to comply with t he opacity limits in paragraph (d)(1). (ii) For other unpaved roadways and areas, the oper ator shall apply chemical dust suppressants in sufficient quantity a nd at least twice a year to stabilize the surface, or apply gravel pa d containing 1- inch or larger washed gravel to a depth of six inch es; 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 internal paved roads a t 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 red uced on weekends, holidays, or days of measurable precipitation provi ded that the operator complies with the opacity limits in paragraph (d)(1 ) at all times. Sweepers purchased or leased 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 all trucks use these roads exclusively when leaving the facility to prevent track-out of d ust to the public roadways and to comply with the opacity limits in p aragraph (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 rumble grate, truck washer or wheel

washer such that the entire circumference of each w heel or truck is cleaned before leaving the facility. (C) To prevent material spillage from trucks to pub lic roadways and fugitive dust emissions during transport, a truck driver on the facility shall ensure

that the cement truck hatches are closed and there is no track-out, and the operator shall provide truck cleaning facilities on -site. (D) The operator shall provide, at least once each calendar year, the “Fugitive Dust Advisory” flyers prepared by the District to a ny company doing business with the facility and which is subject to the requirements in subparagraph (d)(8)(C).Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 11 (9) No Backsliding To prevent any backsliding from the current level o f control, the operator shall operate and maintain all existing equipment accordi ng to permit conditions stated in the permits approved by the Executive Officer pr ior to November 4, 2005 at all

times. (10) Compliance Monitoring Plan (A) No later than June 8, 2009, the operator shall subm it to the Executive Officer a complete compliance plan for wind monitor ing and the monitoring, sampling, and analysis of hexavalent ch romium, and pay a plan evaluation fee pursuant to Rule 306 – Plan Fee s. The submitted plan will be disapproved if it does not meet the provisi ons of subparagraph (d)(10)(B). The operator shall resubmit an approva ble plan within 30 days from date of disapproval; otherwise, the operator s hall be deemed in violation of this provision. (B) The monitoring plan submitted shall contain, at a m inimum, the following: (i) Siting and monitoring protocols that comply wit h EPA’s and CARB’s guidance and/or protocols for measurement of hexavalent chromium, wind direction, and wind speed. A minimu m of three fence-line monitoring stations are required for hex avalent chromium: one upwind and one downwind of the facili ty under the common prevailing wind directions, and one subject to approval by

the Executive Officer to ensure maximum effectivene ss of the monitoring to the most potentially affected recepto r, such as nearest residential or business receptors relative to clinker storage areas or potential hexavalent chromium emitting sou rces. (ii) Breakdown provisions which include: (1) a stat ement that the operator will notify the Executive Officer in writi ng of the

breakdown within 24 hours of its occurrence. If th e breakdown occurs on a Friday, over a weekend, or on a nationa l or state holiday observed by the facility, the facility shal l report such breakdown on the following work day; (2) a repair s chedule; and (3) an action plan with detailed measures to be tak en 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 Exe cutive Officer to conduct any co-located or audit sampling at any tim e;Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 12 (iv) Sampling analysis protocols that comply with E PA and CARB’s appropriate guidance and/or protocols for hexavalen t chromium. All samples shall be analyzed at a District-approve d laboratory, which can be audited at any time; and (v) Any other relevant data and information require d by the Executive

Officer. (C) The Executive Officer shall approve or disapprove t he complete plan within 60 days from the submittal date. (D) The operator may file for a compliance monitoring p lan amendment in the future relative to monitor siting or other elements of the plan as more sitespecific data becomes available. (11) Hexavalent Chrome Monitoring and Other Require ments No later than six months from compliance plan appro val or March 1, 2010, whichever occurs first, the operator of a cement ma nufacturing facility shall conduct hexavalent chromium ambient air monitoring as follows: (A) The operator shall conduct ambient air monitori ng for hexavalent chromium in accordance with the approved monitoring plan set forth in subparagraph (d)(10)(B) or (d)(10)(D), as applicabl e. The hexavalent chromium concentration from a 30-day rolling averag e at each monitoring station shall not exceed 0.70 nanograms per cubic m eter (ng/m 3 ), excluding background. 24-hour sampling shall be co nducted once every third day according to the EPA 1-in-3-day sampling calendar. For monitoring sample retrieval in which collection occ urs on a weekend or facility observed national or state holiday, the sa mple 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 exceedanc e of the 0.70 ng/m 3 level during 12 continuous months of monitoring. O n this sampling schedule, the hexavalent chromium concentration fro m a 90-day rolling average at each monitoring station shall not exceed 0.70 ng/m 3 , excluding background. If there is an exceedance while on thi s sampling schedule, sampling shall immediately revert back to once ever y three days. For monitoring sample retrieval in which collection occ urs on a weekend or facility observed national or state holiday, the sa mple may be collected the following business day. (C) For facilities that elect to comply with (d)(5) (C), any exceedance of the concentrations listed in clauses (d)(11)(A) or (d)( 11)(B) will requireRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 13 enclosure of all clinker materials storage and hand ling if the Executive Officer confirms, through wind event monitoring dat a, that the cement manufacturing facility is the source of violation. The facility operator may select one of the following enclosure schedule: 25 % of the facility’s fiveyear annual average clinker material stored and han dled, by weight, no

later than 12 months from the date of the exceedanc e; and an incremental 25% per subsequent year until completion; or comple te the total enclosure

within 24 months from the date of exceedance. (12) Particulate Matter (PM10) Monitoring and Other Requirements The operator of the cement manufacturing facility w ho accrues three or more approved notices of violation for an exceedance of the upwind/downwind level specified in Rule 403 within a 36-month period shal l conduct PM10 ambient air monitoring. An amendment to the compliance monitor ing 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 monito ring equipment shall be installed and operated within 6 months from the dat e of modified plan approval and no later than one year from the date of the thi rd 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 approved by the E xecutive Officer in a manner as set forth in subparagraphs (d)(10)(B) or (d)(10)(D), as applicable. The differences of PM10 concentrations from any two monitoring sites which represent upwind and downwin d concentrations shall not exceed the amount and averaging time peri od specified in Rule

403. (B) The operator shall apply dust suppressants on a ll openly stored non-clinker materials, unpaved roads, and unpaved areas within the facility, as well as take steps to decrease clinker dust, if the PM10 di fference(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 conduct hourly wind mo nitoring according to a protocol approved by the Executive Officer. (B) On and after the date of operation of the wind monitoring equipment pursuant to subparagraph (d)(13)(A), the operator s hall cease all open handling of clinker material for a two-hour period in the event thatRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 14 instantaneous wind speeds exceed 25 miles per hour (mph), and if such wind speeds subsequently exceed 25 mph, a new two-h our 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 ceased, provided th at dust controls as required by District rules are applied; and unpaved roads are stabilized upon register of the high wind event via the wind m onitoring equipment.

(e) Monitoring and Source Testing (1) For the kilns and clinker coolers, the operator sha ll continuously monitor and record operating parameters including, but not limi ted to, flue gas flow rates and pressure drops across the baghouses to monitor bagh ouse performance and ensure compliance with the opacity limit in subparagraph ( d)(1)(A). (2) For all new baghouses greater than or equal to 10,0 00 actual cubic feet per minute, and for all existing bahouses of the top pr ocess particulate emitters as defined under subparagraph (c)(28)(A), the operator shall install, operate, calibrate and maintain a COMS or BLDS to monitor baghouse per formance and ensure compliance with the opacity limit in subparagraph ( d)(1)(A). (3) The operator shall conduct visible emission obs ervations with EPA Method 22 for process equipment equipped with air pollution contr ol equipment at the following frequency: (i) Weekly for top process particulate emitters def ined under subparagraph (c)(28)(B) that are not equipped with BLDS or COMS; (ii) Monthly for top process particulate emitters d efined under subparagraph (c)(28)(B) that are equipped with BLDS or COMS; an d (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 Main tenance Procedure in paragraph (e)(12) to monitor the performance of air pollution control equipment and ensure compliance with the opacity limit in sub paragraph (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 imple ment all necessary

corrective actions to minimize emissions. (6) If the operator observes visible emissions duri ng any EPA Method 22 test, the operator shall immediately implement all necessary corrective actions to minimizeRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 15 emissions, and conduct EPA Method 9 test within one hour of any observation of

visible emissions. (7) For the kilns and clinker coolers, the operator shall conduct an annual compliance

source test in accordance with the test methods in subdivision (g) to demonstrate compliance with the emission limit(s) in subdivisio n (d). The first annual compliance source test in accordance with an approv ed source test protocol shall be conducted within ninety (90) calendar days after the compliance date specified in subdivision (d). The operator shall submit a so urce 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 for the f irst compliance source test. The testing frequency may be reduced to once every 24 c alendar months if the two

most recent consecutive annual source tests demonst rate compliance with the limits. Upon notification by the Executive Officer , the testing frequency shall be reverted back to annual testing if any subsequent s ource test fails to demonstrate compliance with the limits. In lieu of annual test ing, any operator who elects to use all verified filtration products in its baghous es 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 s ubparagraph (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 testing schedule, the operator shall notify the Executive Officer 60 calendar days before the test date. (9) The operator shall not be required to test non- operational equipment, which is not in operation for at least 6 consecutive months prio r to scheduled testing, as indicated in paragraph (e)(8) provided that the ope rator shall conduct such test within one month after resuming operation. (10) During any compliance source test, the operato r shall monitor and record, at a minimum, all operating data for the selected operat ing 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 repo rt for any compliance source test to the Executive Officer no later than sixty (60) cale ndar days of completion of the

source test.Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 16 (12) Operation and Maintenance Procedures (A) The operator shall develop and implement an Ope ration and Maintenance Procedure to ensure that the performance 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 ma intenance procedures, corrective and preventive actions for t he air pollution control equipment, and training related to EPA Method 22, E PA Opacity Test Method 9 and SCAQMD Opacity Test Method 9B, and oth er applicable information to demonstrate compliance with this rul e. (B) The operator shall develop and implement an Ope ration and Maintenance Procedure that would require sufficient maintenance of internal roadways and areas, prompt cleanup of any pile of material s pillage or carry-back, and application of chemical dust suppressant or oth er dust control methods to maintain surface stabilization of the 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 Ope ration and Maintenance Procedures described under subparagraphs (e)(12)(A) and (e)(12)(B) within 6 months after November 4, 2005, and shall m ake the Operation

and Maintenance Procedures available to the Executi ve Officer upon
request.

(f) Reporting and Recordkeeping (1) The operator shall maintain all records and inf ormation required to demonstrate compliance with the provisions of this rule in a ma nner approved by the Executive Officer for a period of at least five years which s hall be made available to the Executive Officer upon request. (2) The operator of a facility shall keep, at a min imum, the following records to demonstrate compliance: (A) Daily records of applying chemical dust suppres sants, watering, sweeping and cleaning activities; (B) Appropriate records, on at least a monthly basi s, for primary crushers, kilns, raw mills, and finish mills, production reco rds of clinkers and

cements and records of raw materials delivered to t he facility in order to determine emissions;Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 17 (C) Test reports to demonstrate compliance with the emission standards in subdivision (d) including, but not limited to, PM e mission rates, and opacity readings; (D) Records of equipment malfunction and repair for the air pollution control equipment of the top process particulate emitters s pecified under subparagraph (c)(28)(B); (E) Daily records of all material handling, includi ng loading and unloading, and storage pursuant to paragraphs (d)(2) and (d)(5 ); (F) Monitoring data pursuant to subparagraphs (d)(1 1), and (d)(12) as applicable, and supporting documentation, including , but not limited to chains of custody and laboratory results; (G) Hourly records of wind speed and direction purs uant to subparagraph (d)(13); (H) Records of all maintenance activities pursuant to clause (d)(5)(C)(i) and paragraph (h)(7), including any equipment testing a fter the repairs and duration of wind fence removal; (I) Records of clinker pile reclamation, importatio n, and transport pursuant to clause (d)(5)(C)(i), including duration of wind fen ce removal; and (J) Records of all vehicle traffic and monthly aver age road trips pursuant to paragraph (h)(4). (3) Monitoring data shall be reported monthly to, a nd in an electronic format specified by, the Executive Officer. In the event the facility operator finds that an exceedance of the levels specified in subparagraphs (d)(11)(A), (d)(11)(B), or (d)(12)(A) as applicable has occurred, the operator shall report in writing such finding to the Executive Officer, and follow up wit h a phone call the next business day after such finding.

(g) Test Methods and Calculation (1) The operator shall use the following source tes t methods, as applicable, to

determine the PM emission rates. All source test m ethods 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 befo re 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;Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 18 (B) SCAQMD Source Test Method 2.1 or 2.3 – Stack Ga s Flow Rate; (C) SCAQMD Source Test Method 3.1 – Stack Gas Densi ty; (D) SCAQMD Source Test Method 4.1 – Stack Gas Moist ure; (E) SCAQMD Source Test Method 5.2 or 5.3 - Determin ation of Particulate Matter Emissions in which reagent grade acetone sha ll be used to recover samples from the components of the sampling train l ocated before the particulate filter; (F) EPA Source Test Method 5 with the impinger anal ysis may be used in lieu of SCAQMD Source Test Method 5.2 or 5.3. (G) EPA Source Test Method 5D with the impinger ana lysis may be used to measure PM emissions from positive pressure fabric filters. (2) Measurement of particulate matter emissions fro m the cement kiln shall provide

for a correction of sulfur dioxide emissions collec ted in the particulate matter samples. Any measured gaseous sulfur dioxide emiss ions shall be excluded from the measurement of particulate matter emissions by subtracting from the mass of material collected in any impingers a mass equivale nt to the amount of measured sulfur dioxide emissions based upon sulfuric acid d ihydrate as specified in SCAQMD Source Test Methods 5.2 or 5.3. (3) Source tests for PM shall be taken and the aver age of the samples shall be used to determine the applicable emission rate in accordanc e with the following requirements: (A) Simultaneous duplicate samples shall be obtained un less the operator

demonstrates to the satisfaction of the Executive O fficer that it is not physically feasible to do so, in which case the ope rator shall take sequential triplicate samples; (B) All samples must have minimum sampling volume of 12 0 cubic feet or a minimum PM catch of 6 milligrams per sample shall b e collected; (C) For duplicate samples, the source test shall be dee med invalid if the difference between the two samples is greater than 35% of the average of the two samples in the applicable units specified i n subdivision (d) and if the difference between the sample catches normalize d 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 Ex ecutive Officer or designee, if the operator can demonstrate that the process co nditions including, but not limited to, the throughput, quantity, type, and quality of all feedstockRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 19 to the equipment process, and the emission control equipment conditions have not changed throughout the sequential test per iod, then the operator may apply the Dixon outlier test at the 95% signifi cance level to check for and discard one outlier, and shall use the average of the two remaining samples to determine PM emissions. (4) The operator may use alternative or equivalent source test methods, as defined in U.S. EPA 40 CFR 60.2, if they are approved in writi ng by the Executive Officer, the California Air Resources Board, and the U.S. En vironmental Protection Agency. (5) The operator shall use a test laboratory approv ed under the SCAQMD Laboratory Approval Program for the source test methods cited in this subdivision if such approved lab exists. If there is no approved labor atory, 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 fric tion velocity and stabilized surface; and EPA Opacity Test Method 9 and Method 2 2, or SCAQMD Opacity Test Method 9B to determine opacity. (7) When more than one source test method 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 approval by th e 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 Implementat ion Handbook for the demonstration of surface stabilization for open sto rage piles if 90% of the pile’s mass consists of materials that are larger than 1⁄2 i nch. Applicability of this exemption shall be determined through the measureme nt of any composite sample of at least 10 pounds taken from a minimum depth of 12 inches below the pile surface, and from various locations in the pile, bu t 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, providing that s uch piles meet the performance standards in subparagraphs (d)(1)(B) and (d)(1)(C).Rule 1156 (Cont.) (Amended March 6, 2009)

1156 - 20 (2) The operator is exempt from the use of chemical dust suppressants for internal unpaved roads if the use of applicable chemical dus t suppressants on that specific unpaved road violates the rules and/or regulations of the local Water Quality Control Board or other government agency provided t he operator uses water in sufficient quantity and frequency to stabilize the road surface and the operator notifies the Executive Officer in writing 30 days p rior to the use of water. (3) Haul trucks are not required to use designated 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 than a mont hly average of twice a day by a designated vehicle at a speed limit less than 15 mi les 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 pe riod for demolition activities of no longer than six (6) calendar months provided tha t the operator uses water in sufficient quantity and frequency to stabilize the unpaved areas, meets the opacity requirements in subparagraphs (d)(1)(B) and (C) at all times, and keeps sufficient records to demonstrate compliance. (6) With the exception of primary crushing, open ma terial storage piles, and covers and existing enclosures for conveying systems, the provisions of this rule shall not apply to equipment or operations that are subject t o Rule 1157 or Rule 1158 located at the cement manufacturing facilities, pro vided that there is no backsliding from the current level of control as st ated in the permits approved by the Executive Officer prior to November 4, 2005 or as required under Rule 1157 and Rule 1158, whichever is more stringent. (7) The operator is exempt from the requirements in clause (d)(5)(C)(i) in the event the wind fence material needs to be removed to perf orm periodic maintenance of the clinker crane or building. During the time the wind fence material is removed, the clinker crane shall not actively transport clin ker material in the building, except for post maintenance equipment testing. (8) During day(s) in which the instantaneous wind s peeds exceed 25 mph using the on-site wind monitoring equipment pursuant to (d)(1 3)(A), the operator is exempt from the hexavalent chromium and PM10 averaging pro visions of subparagraphs (d)(11)(A) and (d)(11)(B), and (d)(12)(A) as applic able, provided all open handling of clinker material is ceased and dust con trols are applied pursuant to subparagraph (d)(13)(B). If the Executive Officer determines a significant potential of re-entrained hexavalent chromium conta ining dust from the facilityRule 1156 (Cont.) (Amended March 6, 2009)

1156 - 21 exists during such high wind events, the operator s hall implement an approved Mitigation Monitoring Plan to minimize exposure to the surrounding area and to ensure implementation of all applicable dust contro l 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 n otification by the Executive

Officer.