ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 2 of 70 SECTION I SOURCE IDENTIFICATION.............................................................. 2

1. DESCRIPTION OF FACILITY................................................................................ 4
2. FACILITY INVENTORY LIST............................................................................... 4

SECTION II GENERAL CONDITIONS................................................................. 11

1. DEFINITIONS........................................................................................................ 11
2 ACRONYMS.......................................................................................................... 11
3. EFFECTIVE DATE................................................................................................ 12
4. PERMIT EXPIRATION ......................................................................................... 12
5. PERMIT RENEWAL.............................................................................................. 12
6. CONFIDENTIAL INFORMATION ...................................................................... 13
7. PERMIT ACTIONS................................................................................................ 13
8. PERMIT AVAILABILITY..................................................................................... 14
9. REOPENING THE PART 70 PERMIT FOR CAUSE BY THE EPA .................... 14
10. TRANSFER OF PERMIT....................................................................................... 14
11. REVISION OF PART 70 PERMITS—GENERAL CONDITIONS....................... 14
12. SIGNIFICANT PART 70 OPERATING PERMIT MODIFICATIONS ................ 15
13. MINOR PERMIT MODIFICATIONS ................................................................... 16
14. ADMINISTRATIVE PART 70 OPERATING PERMIT AMENDMENTS........... 19
15. OFF-PERMIT CHANGES TO THIS SOURCE ..................................................... 20
16. ON-PERMIT CHANGES TO SOURCES .............................................................. 22
17. FEE PAYMENT ..................................................................................................... 24 18. REQUIREMENTS FOR PERMITS TO CONSTRUCT AND APPROVALS ....... 24
19. CONSOLIDATION OF PROCEDURES FOR PUBLIC PARTICIPATION......... 25
20. PROPERTY RIGTS............................................................................................. 25
21. SEVERABILITY.................................................................................................... 25
22. INSPECTION AND ENTRY.................................................................................. 26
23. DUTY TO PROVIDE INFORMATION ................................................................ 26
24. COMPLIANCE REQUIREMENTS....................................................................... 27
25. CREDIBLE EVIDENCE ........................................................................................ 27
26. NEED TO HALT OR REDUCE ACTIVITY NOT A DEFENSE .......................... 27
27. CIRCUMVENTION............................................................................................... 28
28. PERMIT SHIELD................................................................................................... 28
29. ALTERNATE OPERATING SCENARIOS .......................................................... 28

SECTION III PLANT WIDE CONDITIONS ........................................................... 30

1. PARTICULATE MATTER FROM CONSTRUCTION AND DEMOLITION..... 30
2. OPEN BURNING ................................................................................................... 30
3. AIR POLLUTION EPISODE ................................................................................. 30
4. REPORT OF EXCESS EMISSIONS AND DEVIATIONS ................................... 30
5. ACCIDENTAL RELEASE PROVISIONS ............................................................ 31ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 3 of 70 6. GENERAL TESTING REQUIREMENTS............................................................. 32
7. EMISSIONS TEST METHODS............................................................................. 32
8. EMISSIONS CERTIFICATION REPORT ............................................................ 33
9. COMPLIANCE CERTIFICATION REPORT ....................................................... 34
10. CERTIFICATION BY RESPONSIBLE OFFICIAL.............................................. 34
11. SAMPLING AND EMISSIONS TESTING RECORD KEEPING ........................ 35
12. GENERAL RECORDKEEPING............................................................................ 36
13. GENERAL CONFORMITY................................................................................... 36
14. ASBESTOS PROVISIONS .................................................................................... 36
15. OZONE DEPLETING REGULATIONS ............................................................... 36
16. ACID RAIN PERMIT............................................................................................. 37

SECTION IV PLANT SPEC IFIC CONDITIONS.................................................... 38

SECTION V INSIGNIFICANT ACTIVITIES........................................................ 67

SECTION VI STATE ONLY EN FORCEABLE CONDITIONS............................ 70ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 4 of 70 SECTION I SOURCE IDENTIFICATION

1. DESCRIPTION OF FACILITY

ESSROC Cement Corporation, a division of the Italicementi Group, manufactures Portland cement and masonry cements at its Buckeystown, Fred erick County, Maryland plant. The Frederick County site quarries stone for use as aggregate an d as raw material for th e wet process Portland cement plant. Aggregate processing operati ons are not owned or operated by ESSROC. Additional tenant operations occur on the Perm ittee’s geographical site , which ESSROC neither owns nor operates, including an asphalt manufacturing plant and a trucking terminal. The facility has been in operation at this location since 1958.

FACILITY INVENTORY LIST

1. Fugitive Sources - Not subj ect to MACT Requirements

Emissions
Unit Number Emissions Unit Name Emission s Unit Description Date of
Installation 1A – Quarry
EU-101 Overburden Removal Soil being removed from the quarry surface. (NP101) 1958

EU-1AA Drilling and Blasting Quarry mining activity 1958
EU-102 Raw Material Loading (Limestone) Limestone from the quarry being loaded into haul trucks. (NP102) 1958

EU-1BB Raw Material Loading - Sand Loading through quarry haul roads 1958

EU-103 Quarry Haul Roads Unpaved roads for transporting Limestone and sand to the stockpiles and the primary crusher - overburden being hauled to either plant berms or being hauled off site by a contractor. (NP103) 1958

1B – Raw Material Stockpiles, Unloading, and HandlingESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 5 of 70 Emissions
Unit Number Emissions Unit Name Emission s Unit Description Date of
Installation

EU-104 Limestone Stockpile A Outdoor limestone storage pile located at the primary crusher. (NP104) 1958

EU-105 Raw Material Unloading (Registration # 6-0467

, formerly 6-0106 ) Limestone being moved from the limestone stockpile or directly from the quarry and unloaded into the primary crusher. (NP105) 1958

EU-204 Limestone Stockpile B Outdoor limestone storage pile for limestone crushed in the impactor if there is no room in the raw material storage area. (NP201) 1958

EU-301 Raw Material Unloading Unloading and storage of calcium, alumina, silica, and iron bearing materials. (NP301) 1958

EU-303-R Raw Material Storage Area (Registration # 6-0467

, formerly 6-0106 ) Storage Area for quarried limestone, quarried sand, calcium, alumina, silica, and iron bearing materials. (NP303) 1958

EU-304 Raw Material Blending (Registration # 6-0467

, formerly 6-0106 ) Blending limestone, sand, calcium, alumina, silica, and iron bearing materials. (NP304) 1958

EU-305 Raw Material Feed Bins (Registration # 6-0467

, formerly 6-0106 ) Ten (10) feed bins for blended material from the blending area.
Bins meter the flow of raw materials to the feed conveyors. (NP305) 1958

EU-309 Alumina Bearing Materials Stockpile Future outside stockpile for alumina bearing material. (NP309) 1958

EU-230 Iron Bearing Materials Stockpile Outside stockpile for iron bearing materials to EU301. (NP310) 1958

EU-311 Gysum Stockpile Outside stockpile for gypsum to EU505. (NP232) 1958

EU-3AA Calcium Bearing Material Stockpile Outside stockpile for calcium bearing material to EU301 1958

EU-3BB Silica Bearing Material Stockpile Outside stockpile for silica bearing
material to EU301 1958

1C – Coal Feed System EU-302 Coal/Coke Unloading Unloading coal/coke. (NP302) 1958 EU-303-F Coal/coke Storage Area (Registration # 6-0467

, formerly 6-0106 ) Storage Area for coal/coke. (NP303) 1958

EU-308 Coal/Coke Stockpile Outside stockpile for coal/coke. (NP308) 1958ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 6 of 70 Emissions
Unit Number Emissions Unit Name Emission s Unit Description Date of
Installation EU-3CC Coal/Coke Storage & Conveying Consisting of a bin, conveyor, bucket elevator, long conveyor, conveyors No.1 and 2, feed bin No. 1 and 2, and weigh belts No.1 and 2 1958

EU-3DD Coal Mill NO.1 System Consisting of a coal mill and burner pipe 1958

EU-3EE Coal Mill NO.2 System Consisting of a coal mill and burner pipe 1958

1D – Clinker Handling EU-501 Clinker Stockpile A Outside stockpile. (NP501) 1958 EU-502 Clinker Stockpile B Outside stockpile. (NP502) 1958 1E – Waste Dust Collection and Handling EU-405 Recycled Dust Collection System (Registration # 6-0468, formerly 6-0064 ) Including dust screws 1-10, 2 bucket elevators, and east and west CKD tanks. (NP401) 1958

EU-407 CKD Loading to Truck (Registration # 6-0468, formerly 6-0064) Excess cement kiln dust (CKD) being conditioned and then loaded into haul trucks. (NP402) 1958

EU-408 CKD Hauling Transporting conditioned cement kiln dust to the CKD disposal areas along the unpaved haul road. (NP403) 1958

EU-409 CKD Disposal Areas Ou tside disposal areas of conditioned CKD. (NP404) 1958

EU-415 Outside Storage of CKD Prio r to shipment to end users New

1F

–Gypsum Unloading EU-505 Gypsum Unloading Natural gypsum and calcium sulfate being unloaded. (NP505) 1958

1G

–Plant Hauling Roads

EU-701 General - Plant Haul Roads Paved roads and unpaved roads used by trucks carrying cement, gypsum, coal/coke, calcium, alumina, silica, and iron bearing materials to and from various locations throughout the plant. (NP701) 1958

2. Point Sources - Not Subject to MACT requirements
Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
InstallationESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 7 of 70 Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
Installation 2A – Raw Material Handling EU-201 Primary Crusher System (Registration # 6-0467, formerly 6-0106 ) Consisting of a hopper, feeder, jaw crusher, grizzly, and belt #1 controlled by baghouse CD201. (EP201) 1958

EU-202 Impactor Building (Registration # 6-0467, formerly 6-0106) Consisting the impactor, belts 1, 2, 3, and 4, and 2 screens controlled by baghouse CD202. (EP202) 1958

EU-203 Transfer Tower (Registration # 6-0467, formerly 6-0106) Transferring from Belt 2 to Belt 3 or the aggregate stone plant controlled by baghouse CD203. (EP203) 1958

2B

–Dust Waste Collection and Handling EU-406 Dust System Discharge (Registration # 6-0468

, formerly 6-0064 ) Including air slide, bucket elevator and rotary drum controlled by baghouse CD405. (EP402) 1958
modified in
1985

EU-410 CKD Transfer to Silos (Registration #6-0395) Including compressor, F- K pumps, and air slide controlled by baghouse CD-406. (EP403) 1996

EU-411 CKD Silo 31 (Registration #9-0147 and 6-0395, formerly 6-0028 and 6-0395 ) Controlled by baghouse CD407. (EP404) 1958 modified in 1996

EU-412 Recycled Dust Transfer (Registration # 6-0395N) Controlled by baghouse CD408. (EP405) 1996

EU-413 Dust Scoop NO. 1 Controlled by baghouse CD411. (EP408) New

EU-414 Dust Scoop NO. 2 Controlled by baghouse CD412. (EP409) New

3. Fugitive Emissions – Subj ect to MACT Requirements

Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
Installation

3A

–Raw Meal Feed EU-306 Raw Material Conveyors #1 (Registration # 6-0467

, formerly 6-0106 ) Consisting of two (2) belts to move
raw materials from the feed bins into Raw Mill 1. (NP306) 1958

EU-307 Raw Material Conveyors #2 (Registration # 6-0467

, Consisting of two (2) belts to move
raw materials from the feed bins into 1958ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 8 of 70 Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
Installation formerly 6-0106 ) Raw Mill 2. (NP307) EU-3FF Raw Mill NO.1 Processing with water 1958 EU-3GG Raw Mill NO.2 Processing with water 1958 EU-3HH Kiln Feed System Consisting of 5 blending tanks & 3
feed tanks 1958

3B

–Clinker Handling EU-503 Clinker Storage Area (Registration # 6-0469, 6- 0470 and 6-0471, formerly 6- 0006, 6-0007 and 6-0008) Clinker being transferred by drag conveyor to this covered storage area. (NP503) 1958

EU-504 Clinker Blending (Registration # 6-0469, 6- 0470 and 6-0471, formerly 6- 0006, 6-0007 and 6-0008) Clinker being transferred here by crane and blended before entering the finish mill systems. (NP504) 1958

3C

–Finish Mill Feed Systems EU-506 Gypsum Storage Area (Registration # 6-0469, 6- 0470 and 6-0471, formerly 6- 0006, 6-0007 and 6-0008) Covered storage area for storing natural gypsum and calcium sulfate
to be used in the finish mills. (NP506) 1958

EU-507 Finish Mill NO.1 Feed System (Registration #6- 0469, formerly 6-0006 ) Consisting of two feed bins and one conveyor for feeding combined clinker, gypsum, recycled dust, quarried limestone, and calcium bearing materials. (NP507) 1958

EU-508 Finish Mill NO. 2 Feed System (Registration # 6- 0470, formerly 6-0007 ) Consisting of two feed bins and one conveyor for feeding combined clinker, gypsum, recycled dust, quarried limestone, and calcium bearing materials. (NP508) 1958

EU-509 Finish Mill NO. 3 Feed System (Registration #6-
0471 , formerly 6-0008 ) Feed system consisting of three feed bins and two conveyors for feeding combined clinker, gypsum, recycled dust, quarried limestone, and calcium bearing materials. (NP509) 1958

4. Kilns– Point Sources - Subject to MACT requirements
Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
InstallationESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 9 of 70 Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
Installation

EU-401 Pyroprocessing Area - Kiln System #1 (Registration # 6-
0465 , formerly 6-0002 ) Coal and distillate fuel oil-fired wet rotary kiln #1 equipped with a
multiclone CD401 and an ESP CD403. (EP401) 1958
modified in
1992 for tire

burning

EU-402 Pyroprocessing Area –Kiln System #2 (Registration # 6- 0466, formerly 6-0003 ) Coal and distillate fuel oil-fired wet rotary kiln #2 equipped with a
multiclone CD401 and an ESP CD403. (EP401) 1958
modified in
1992 for tire

burning

5. Clinker Coolers and Drag Conv eyors–Subject to MACT requirements
Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
Installation

EU-403 Clinker Cooler #1 and Clinker Drag Conveyors (Registration #6-0463, formerly 6-0004 ) Venting though baghouse CD 413 and equipped with a continuous opacity monitor (COM) (EP410) 1958
modified in
2001

EU-404 Clinker Cooler #2 and Clinker Drag Conveyors (Registration # 6-0464, formerly 6-0005 ) Venting though baghouse CD 414 and equipped with a continuous opacity monitor (COM). (EP410) 1958
modified in
2001

6. Finish Mill Systems – Point So urces - Subject to MACT requirements
Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
Installation

EU-510 Finish Mill #1 System (Reg. # 6-0469, formerly 6-0006); Consisting of the finish mill, 2 air slides, 1 cyclone, 1 conveyor, 1 separator, and 1 elevator controlled by baghouse CD501. (EP-501) 1958 Baghouse
modified
March 1981

EU-511 Finish Mill #2 System (Reg. # 6-0470, formerly 6-0007 ) Consisting of the finish mill, 2 air slides, 1 cyclone, 1 conveyor, 1 separator, and 1 elevator controlled by baghouse CD-502. (EP502) 1958 Baghouse
modified
March 1981

EU- 512 Finish Mill #3 System (Reg. # 6-0471, formerly 6-0008 ) Consisting of the finish mill, 2 air slides, 1 cyclone, 1 conveyor, 1 separator, and 1 elevator controlled by baghouse CD503. (EP503) 1958 Baghouse
modified
March 1981ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 10 of 70 7. Cement Storage, Bagging, and Loadou t - Point Sources - Subject to MACT requirements
Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
Installation EU-513 Cement Cooler System (Registration #6-0469, 6- 0470, and 6-0471 , formerly 6-0006, 6-0007, and 6-0008 ) Consisting of 1 screw conveyor, 2 cement coolers, 2 surge bins, and 5 air slides controlled by baghouses CD501, 502 and 503. (EP501), (EP502), and (EP503) Prior to
1970

EU-601 Cement Storage Silos (Registration # 6-0028 & 0395) Finished masonry cement being pneumatically pumped from the cement cooler system to the cement storage silos controlled by baghouse CD601. (EP601) 1958 Baghouse
added in February
1996
EU-602 Bagging System (Registration # 6-0395) Consisting of a cyclone, 2 bins, 3 airslides, a screw conveyor, a bucket elevator, a vibrating screen, an incline packer, a belt conveyor, a bag aligning belt, and a bag torture and cleaning unit controlled by baghouse CD602. (EP602) 1996

EU-603 Cement Storage Silos and StarBins (Registration # 9- 0147, formerly 6-0028) Consisting of 15 cement storage silos and 10 star bins controlled by baghouse CD603. (EP603) 1958

EU-604 Bulk Loading System (Registration #9-0147, formerly 6-0028 ) Consisting of loading bins 105, 205, and 305 and 3 F-K pumps controlled by baghouse CD604. (EP604) 1958
modified in
1981
EU-605 East Side Scale & Loading Station (Registration #9- 0147, formerly 6-0028 ) Cement being weighed and loaded
into cement tanker trucks controlled by baghouse CD605. (EP605) 1958
modified in
1981
EU-606 West Side Scale & Loading Station (Registration #9- 0147, formerly 6-0028 ) Cement being weighed and loaded
into cement tanker trucks controlled by baghouse CD606. (EP606) 1958
modified in
1981

8. Fuel Burning Equipment – Point So urces – Not Subject to MACT and NSPS
Emissions Unit
Number Emissions Unit Name Emission s Unit Description Date of
Installation

EU-702 Fuel burning - Boilers #1 and #2 (Registration # 4-0230 and 4-0231, formerly 4-0008
and 4-0029 ) 7.5 million Btu per hour heat input
fuel oil-fired Kewanee hot water boilers to provide heat and to the office and other buildings at the plant. (EP702) 1958ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 11 of 70 SECTION II GENERAL CONDITIONS

1. DEFINITIONS

[COMAR 26.11.01.01] and [COMAR 26.11.02.01-26]

The words or terms in this Part 70 permit shall have the meaning established in
COMAR 26.11.01 and .02 unless otherwis e stated in this permit.

2. ACRONYMS

ARMA Air and Radiation Ma nagement Administration BACT Best Available Control Technology
Btu British Thermal Unit CAAA Clean Air Act (amended) CAM Compliance Assured Monitoring
CEM Continuous Emissions Monitor CFR Code of Federal Regulations
CO Carbon Monoxide COMAR Code of Maryland Regulations EPA Environmental Protection Agency FR Federal Register gr grains
HAP Hazardous Air Pollutant MACT Maximum Achievable Control Technology MDE Maryland Department of the Environment
NESHAPS National Emissions Standards for Hazardous Air Pollutants NOx Nitrogen Oxides
NSPS New Source Performance Standards
NSR New Source Review OTR Ozone Transport Region
PM Particulate Matter PM10 Particulate Matter with Nominal Aerodynamic Diameter
of 10 micrometers or less ppm Parts per Million ppb Parts per Billion PSD Prevention of Significant Deterioration
PTC Permit to Construct PTO Permit to Operate (State)
SIC Standard Industrial Classification SIP State Implementation Plan
SO2 Sulfur Dioxide
TAP Toxic Air Pollutant tpy Tons Per Year
VE Visible EmissionsESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 12 of 70 VOC Volatile Organic Compounds

3. EFFECTIVE DATE

The effective date of the c onditions in this Part 70 permit is the date of permit issuance, unless otherwise stated in the permit.

4. PERMIT EXPIRATION

[COMAR 26.11.03.13B(2)]

Upon expiration of this permit, the terms of the permit w ill automatica lly continue
to remain in effect until a new Part 70 permit is issued for this facility provided that the Permittee has submitted a timely and complete application and has paid applicable fees under COMAR 26.11.02.16.

Otherwise, upon expiration of this permit the right of the Permittee to operate this facility is terminated.

5. PERMIT RENEWAL

[COMAR 26.11.03.02B(3)] and [COMAR 26.11.03.02E ]

The Permittee shall submit to the Department a complete application for renewal of this Part 70 permit at least 6 months, but not more than 12 months, before the expiration of the permit. Upon submitti ng a completed application, the Permittee may continue to operate this facility pending final action by the Department on
the renewal.

The Permittee, upon becoming aware that any relevant facts were omitted or
incorrect information was submitted in the permit application, shall promptly submit such supplementary facts or corre cted information no later than 10 days after becoming aware that this occurred. The Permittee shall also provide additional information as necessary to address any requirements that become applicable to the facility after the date a complete application was submitted, but prior to the release of a draft permit. This information shall be submitted to the Department no later than 20 days after a new requirement has been adopted.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 13 of 70 6. CONFIDENTIAL INFORMATION

[COMAR 26.11.02.02G]

In accordance with the provisions of the State Government Article, Sec. 10-611 et seq., Annotated Code of Mary land, all information subm itted in an application shall be considered part of the public record and availabl e for inspection and copying, unless the Permittee claims that the information is confidential when it is submitted to the Department. At the time of the request for inspection or copying, the Department will ascertain the conf identiality of the information. The Permittee, when requesting confidentiality, shall identify the information in a manner specified by the Department and, when requested by the Department, promptly provide specific reasons s upporting the claim of confidentiality. Information submitted to the Department w ithout a request that the information be deemed confidential may be made availabl e to the public. Subject to approval of the Department, the Permittee may pr ovide a summary of confidential information that is suitable for public revi ew. The contents of this Part 70 permit are not subject to confidential treatment.

7. PERMIT ACTIONS

[COMAR 26.11.03.06E(3)] and [COMAR 26.11.03.20A]

This Part 70 permit may be revoked or re opened and revised for cause. The filing of an application by the Permittee for a permit revision or renewal; or a notification of termination, planned cha nges or anticipated noncompliance by the facility, does not stay a term or condition of this permit.

The Department shall reopen and revise, or revoke the Permittee's Part 70 permit under the following circumstances:

a. Additional requirements of the Clean Air Act become applicable to this facility and the remaining permit term is 3 years or more;

b. The Department or the EPA determines that this Part 70 permit contains a material mistake, or is based on fals e or inaccurate information supplied by or on the behalf of the Permittee;

c. The Department or EPA determines that this Part 70 permit must be revised or revoked to assure complian ce with applicable requirements of the Clean Air Act; orESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 14 of 70 d. Additional requirements become app licable to an affected source under the Federal Acid Rain Program.

8. PERMIT AVAILABILITY

[COMAR 26.11.02.13G]

The Permittee shall maintain this Part 70 pe rmit in the vicinity of the facility for which it was issued, unless it is not prac tical to do so, and make this permit immediately available to official s of the Department upon request.

9. REOPENING THE PART 70 PERMIT FOR CAUSE BY THE EPA

[COMAR 26.11.03.20B]

The EPA may terminate, modify, or re voke and reissue a permit for cause as prescribed in 40 CFR § 70.7(g).

10. TRANSFER OF PERMIT

[COMAR 26.11.02.02E]

The Permittee may not transfer this Title V (Part 70) permit except as provided in
COMAR 26.11.03.15.

11. REVISION OF PART 70 PE RMITS—GENERAL CONDITIONS

[COMAR 26.11.03.14] and [COMAR 26.11.03.06A(8)]

a. The Permittee shall submit an applicati on to the Department to revise a Part 70 permit when required under COMAR 26.11.03.15-.17.

b. When applying for a revision to a Part 70 permit, the Permittee shall comply with the requirements of COMAR 26.11.03.02 and .03 except that the application for a revision need only include information listed that is related to the proposed change to th e source and revision to the permit.
This information shall be sufficient to evaluate the propos ed change and to determine whether it will comply with all applicable requirements of the
Clean Air Act.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 15 of 70 c. The Permittee may not change any pr ovision of a comp liance plan or schedule in a Part 70 permit as an administrative permit amendment or as a minor permit modification unless th e change has been approved by the Department in writing.

d. A permit revision is not required for a ch ange that is provided for in this permit relating to approved economic incentives, marketable permits, emissions trading, and other similar programs.

12. SIGNIFICANT PART 70 OPERATING PERMIT MODIFICATIONS

[COMAR 26.11.03.17]

The Permittee may apply to the Department to make a significant modification to its Part 70 Permit as provided in COMAR 26.11.03.17 and in accordance with the following conditions:

a. A significant modification is a revi sion to the federally enforceable provisions in the permit that is not an administrative or minor permit modification, as defined in COMAR 26.11.03.15 or 26.11.03.16.

b. This permit does not preclude the Permittee from making changes, consistent with the provisions of COMAR 26.11.03.17, that would make the permit or particular terms and conditions of the permit irrelevant, such as by shutting down or reducing the leve l of operation of a source or of an
emissions unit within the source. Ai r pollution control equipment may not be shut down or its level of operati on reduced if doing so would violate any term of this permit.

c. Significant permit modifications are subject to all requirements of COMAR 26.11.03 as they apply to perm it issuance and renewal, including the requirements for applications, public participati on, and review by affected states and EPA, except:

(1) An application needs only to incl ude information pertaining to the proposed change to the source an d modification of this permit, including a description of th e change and modification, the emissions resulting from the change and modification, and any new applicable requirements of the Clean Air Act that will apply if the change occurs;ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 16 of 70 (2) Public participation, and review by affected states and EPA, is limited to only the application and those federally enforceable terms and conditions of the Part 70 permit that are affected by the significant permit modification.

d. As provided in COMAR 26.11.03.15B(5), an administrative permit amendment may be used to make a ch ange that would ot herwise require a significant permit modification if proce dures for enhanced preconstruction review of the change are followed th at satisfy the requirements of 40 CFR Sec. 70.7(d)(1)(v).

e. Before making a change that qualifie s as a significant permit modification, the Permittee shall obtain all permits to construct and approvals required by COMAR 26.11.02.

f. The Permittee may not make a significan t permit modification that results in a violation of any applicable re quirement of the Clean Air Act.

g. The permit shield in COMAR 26.11.03.23 applies to a final significant permit modification that has been issu ed by the Department, to the extent applicable under COMAR 26.11.03.23.

13. MINOR PERMIT MODIFICATIONS

[COMAR 26.11.03.16]

The Permittee may apply to the Department to make a minor modification to the federally enforceable provisions of this Part 70 permit as provided in COMAR 26.11.03.16 and in accordance with the following conditions:

a. A minor permit modification is a Part 70 permit revision that:

(1) Does not result in a violation of any applicable requirement of the Clean Air Act;

(2) Does not significantly revise existing federally enforceable monitoring, including test methods, reporting, record keeping, or compliance certification requirements except by:

(a) Adding new requirements,ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 17 of 70 (b) Eliminating the requirements if they are rendered meaningless because the emissions to which the requirements apply will no longer occur, or

(c) Changing from one approved test method for a pollutant and source category to another;

(3) Does not require or modify a:

(a) Case-by case determination of a federally enforceable emissions standard,

(b) Source specific determination for temporary sources of ambient impacts, or

(c) Visibility or increment analysis;

(4) Does not seek to establish or modify a federally enforceable permit term or condition for which there is no corresponding underlying applicable requirement of the Clean Air Act, but that the Permittee has assumed to avoid an applicable requirement to which the
source would otherwise be subject, including:

(a) A federally enforceable emissi ons standard applied to the source pursuant to COMAR 26.11.02.03 to avoid classification as a Title I modification; and

(b) An alternative emissions standard applied to an emissions unit pursuant to regulations promulgated under Sec. 112(i)(5) of the Clean Air Act;

(5) Is not a Title I modification; and

(6) Is not required under COMAR 26.11.03.17 to be processed as a significant modification to this Part 70 permit.

b. Application for a Minor Permit Modification.

The Permittee may submit to the Department an application for a minor permit modification that satisfie s the requirements of COMAR 26.11.03 which includes the following:ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 18 of 70 (1) A description of the proposed change, the emissions resulting from the change, and any new applicable requirements that will apply if the change is made;

(2) The proposed minor permit modification;

(3) Certification by a responsible o fficial, in accordance with COMAR
26.11.02.02F that:

(a) The proposed change meets th e criteria for a minor permit modification, and

(b) The Permittee has obtained or applied for all required permits to construct requ ired by COMAR 26.11.03.16 with respect to the proposed change;

(4) Completed forms for the Department to use to notify the EPA and affected states, as required by COMAR 26.11.03 .07--.12.

c. Permittee’s Ability to Make Change

(1) For changes proposed as minor permit modifications to this permit that will require the applicant to obtain a permit to construct, the permit to construct must be i ssued prior to the new change.

(2) During the period of time after th e Permittee applies for a minor modification but before the Department acts in accordance with COMAR 26.11.03.16F(2):

(a) The Permittee shall comply with applicable requirements of
the Clean Air Act related to the change and the permit
terms and conditions described in the application for the
minor modification.

(b) The Permittee is not required to comply with the terms and conditions in the permit it seeks to modify. If the Permittee fails to comply with the terms and conditions in the application during this time, the terms and conditions of both this permit and the application for modification may be enforced against it.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 19 of 70 d. The Permittee is subject to enforcement action if it is determined at any time that a change made under COMAR 26.11.03.16I is not within the scope of this regulation.

e. Minor permit modification procedures may be used for the use of economic incentives, marketable perm its, emissions trading, and other similar approaches, but only to the extent that the minor permit modification procedures provide as part of the Maryland SIP or other applicable requirements of the Clean Air Act.

14. ADMINISTRATIVE PART 70 OPERATING PERMIT AMENDMENTS

[COMAR 26.11.03.15]

The Permittee may apply to the Department to make an administrative permit amendment as provided in COMAR 26.11.03.15 and in accordance with the following conditions:

a. An application for an administrative permit amendment shall:

(1) Be in writing;

(2) Include a statement certified by a responsible official that the proposed amendment meets the criteria in COMAR 26.11.03.15 for an administrative permit amendment, and

(3) Identify those provisions of this part 70 permit for which the amendment is requested, includ ing the basis for the request.

b. An administrative permit amendment:

(1) Is a correction of a typographical error;

(2) Identifies a change in the na me, address, or phone number of a person identified in this permit, or a similar administrative change involving the Permittee or other matters which are not directly related to the control of air pollution;

(3) Requires more frequent monitoring or reporting by the Permittee;

(4) Allows for a change in owne rship or operational control of a source for which the Department determines that no other revisionESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 20 of 70 to the permit is necessary and is documented as per COMAR 26.11.03.15B(4);

(5) Incorporates into this permit the requirements from preconstruction review permits or approvals issued by the Department in accordance with COMAR 26.11.03.15B(5), but only if it satisfies 40CFR70.7(d)(1)(v);

(6) Incorporates any other type of change, as approved by the EPA,
which is similar to thos e in COMAR 26.11.03.15B(1)--(4);

(7) Notwithstanding COMAR 26.11.0 3.15B(1)--(6) for purposes of the acid rain portion of a Pa rt 70 permit, are governed by regulations promulgated under Titl e IV of the Clean Air Act; or

(8) Incorporates any change to a term or condition specified as State-only enforceable, if the Permittee has obtained all necessary permits to construct and approva ls that apply to the change.

c. The Permittee may make the change addressed in the application for an administrative amendment upon receipt by the Department of the application, if all permits to construc t or approvals othe rwise required by COMAR 26.11.02 prior to making the ch ange have first been obtained from the Department.

d. The permit shield in COMAR 26.11.03.23 applies to administrative permit amendments made under Sec. B(5) of COMAR 26.11.03.15, but only after the Department takes final action to revise the permit.

e. The Permittee is subject to enforcement action if it is determined at any time that a change made under COMAR 26.11.03.15 is not within the scope of this regulation.

15. OFF-PERMIT CHANGES TO THIS SOURCE

[COMAR 26.11.03.19]

The Permittee may make off-permit change s to this facility as provided in COMAR 26.11.03.19 and in accordance with the following conditions:ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 21 of 70 a. The Permittee may make a change to this permitted facility that is not addressed or prohibited by the federally enforceable conditions of this Part 70 permit without obtaining a Part 70 permit revision if:

(1) The Permittee has obtained all pe rmits and approvals required by COMAR 26.11.02 and .03;

(2) The change is not subject to a ny requirements under Title IV of the Clean Air Act;

(3) The change is not a Title I modification; and

(4) The change does not violate an ap plicable requirement of the Clean Air Act or a federally enforceable term or condition of the permit.

b. For a change that qualifies under COMAR 26.11.03.19, the Permittee shall provide contemporaneous written notic e to the Department and the EPA, except for a change to an emissions unit or activity that is exempt from the Part 70 permit application, as provided in COMAR 26.11.03.04. This
written notice shall describe the cha nge, including the date it was made, any change in emissions, including the pollutants emitted, and any new applicable requirements of the Clean Ai r Act that apply as a result of the change.

c. Upon satisfying the requirements of COMAR 26.11.03.19, the Permittee may make the proposed change.

d. The Permittee shall keep a record describing:

(1) Changes made at the facility that result in emissions of a regulated air pollutant subject to an applicable requirement of the Clean Air Act, but not otherwise regulated under this permit; and

(2) The emissions resulting from those changes.

e. Changes that qualify under COMAR 26.11.03.19 are not subject to the requirements for Part 70 revisions.

f. The Permittee shall include each off-permit change under COMAR 26.11.03.19 in the application for renewal of the Part 70 permit.

g. The permit shield in COMAR 26.11.03.23 does not apply to off-permit changes made under COMAR 26.11.03.19.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 22 of 70 h. The Permittee is subject to enforcement action if it is determined that an off-permit change made under COMAR 26.11.03.19 is not within the scope of this regulation.

16. ON-PERMIT CHANGES TO SOURCES

[COMAR 26.11.03.18]

The Permittee may make on-permit changes that are allowed under Section 502(b)(10) of the Clean Air Act as provided in COMAR 26.11.03.18 and in accordance with the following conditions:

a. The Permittee may make a change to this facility without obtaining a revision to this Part 70 permit, if:

(1) The change is not a Title I modification;

(2) The change does not result in emissions in excess of those expressly allowed under the federa lly enforceable provisions of this Part 70 permit for the permitted facility or for an emissions unit within the facility, whether expr essed as a rate of emissions or in terms of total emissions;

(3) The Permittee has obtained all pe rmits and approvals required by COMAR 26.11.02 and .03;

(4) The change does not violate an ap plicable requirement of the Clean Air Act;

(5) The change does not violate a fe derally enforceable permit term or condition related to monitoring, including test methods, record keeping, reporting, or complian ce certification requirements;

(6) The change does not violate a fe derally enforceable permit term or condition limiting hours of operation, work practices, fuel usage, raw material usage, or production levels if the term or condition
has been established to limit emissions allowable under this permit;ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 23 of 70 (7) If applicable, the change does not modify a federally enforceable provision of a compliance plan or schedule in this Part 70 permit unless the Department has approved the change in writing; and

(8) This permit does not expressl y prohibit the ch ange under COMAR
26.11.03.18.

b. The Permittee shall notify the Departme nt and the EPA in writing of a proposed on-permit change under COMAR 26.11.03.18 not later than 7 days before the change is made. The written information shall include the following information:

(1) A description of the proposed change;

(2) The date on which the change is proposed to be made;

(3) Any change in emissions resulting from the change, including the pollutants emitted;

(4) Any new applicable requirement of the Clean Air Act; and

(5) Any permit term or condition that would no longer apply.

c. The responsible official of this faci lity shall certify in accordance with COMAR 26.11.02.02F that the proposed ch ange meets the criteria for the use of on-permit changes under COMAR 26.11.03.18.

d. The Permittee shall attach a copy of each notice required by condition b. above to this Part 70 permit.

e. On-permit changes that qualify under COMAR 26.11.03.18 are not subject to the requirements for Part 70 permit revisions.

f. Upon satisfying the require ments under COMAR 26.11.03.18, the Permittee may make the proposed change.

g. The permit shield in COMAR 26.11.03.23 does not apply to on-permit changes under COMAR 26.11.03.18.

h. The Permittee is subject to enforcement action if it is determined that an on-permit change made under COMAR 26.11.03.18 is not within the scope of the regulation or violates any requirement of the State air pollution control law.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 24 of 70 17. FEE PAYMENT

[COMAR 26.11.02.16A(2) & (5)(b)]

a. The fee for this Part 70 permit is as prescribed in Regulation .19 of
COMAR 26.11.02.

b. The fee is due on and shall be paid on or before each 12-month anniversary date of the permit.

c. Failure to pay the annual permit fee constitutes cause for revocation of the permit by the Department.

18. REQUIREMENTS FOR PERMITS TO CONSTRUCT AND APPROVALS

[COMAR 26.11.02.09]

The Permittee may not construct or modify or cause to be constructed or modified any of the following sources without first obtaining, and having in current effect, the specified permits to construct and approvals:

a. New Source Review source, as defined in COMAR 26.11.01.01, approval;

b. Prevention of Significant Deteriora tion source, as defined in COMAR 26.11.01.01, approval;

c. New Source Performance Standard source, as defined in COMAR 26.11.01.01, permit to construct;

d. National Emissions Standards for Hazardous Air Pollutants source, as defined in COMAR 26.11.01.01, permit to construct;

e. A stationary source of lead that di scharges one ton per year or more of lead or lead compounds measured as elemental lead, permit to construct;

f. All stationary sources of air po llution, including inst allations and air pollution control equipment, except as listed in COMAR 26.11.02.10, permit to construct.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 25 of 70 g. In the event of a conflic t between the appl icability of (a-e ) above and an exemption listed in COMAR 26.11.02.10, th e provision that requires a permit applies.

h. Approval of a PSD or NSR source by the Department does not relieve the Permittee obtaining an approval from also obtaining all permits to construct required by (c-g) above.

19. CONSOLIDATION OF PROCEDURE S FOR PUBLIC PARTICIPATION

[COMAR 26.11.02.11C] and [COMAR 26.11.03.01K]

The Permittee may request the Department to authorize special procedures for the Permittee to apply simultaneously, to the ex tent possible, for a permit to construct and a revision to this permit.

These procedures may provide for combined public notices, informational meetings, and public hearings for both pe rmits but may not adversely affect the rights of a person, including EPA and affect ed states, to obtain information about the application for a permit, to comment on an application, or to challenge a permit that is issued.

These procedures may not alter any existing permit procedures or time frames.

20. PROPERTY RIGHTS

[COMAR 26.11.03.06E(4)]

This Part 70 permit does not convey a ny property rights of any sort, or any exclusive privileges.

21. SEVERABILITY

[COMAR 26.11.03.06A(5)]

If any portion of this Part 70 permit is challenged, or any term or condition deemed unenforceable, the remainder of th e requirements of the permit continues
to be valid.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 26 of 70 22. INSPECTION AND ENTRY

[COMAR 26.11.03.06G(3)]

The Permittee shall allow employees and authorized representatives of the Department, the EPA, and the local Health Department, upon presentation of
credentials or other documents as may be required by law, to:

a. Enter at a reasonable time without de lay and without prio r notification the Permittee's property where a Part 70 source is located, emissions-related activity is conducted, or records re quired by this permit are kept;

b. Have access to and make copies of records required by the permit;

c. Inspect all emissions units within th e facility subject to the permit and all related monitoring systems, air polluti on control equipment, and practices or operations regulated or required by the permit; and

d. Sample or monitor any substances or parameters at or related to the emissions units at the facility for the purpose of determining compliance with the permit.

23. DUTY TO PROVIDE INFORMATION

[COMAR 26.11.03.06E(5)]

The Permittee shall furnish to the Department, within a reasonable time specified by the Department, information requested in writing by the Department in order
to determine whether the Permittee is in compliance with the federally enforceable conditions of this Part 70 perm it, or whether cause exists for revising or revoking the permit. Upon request, the Permittee shall also furnish to the Department records required to be kept under the permit.

For information claimed by the Permittee to be confidential and therefore potentially not discloseable to the public, the Department may require the Permittee to provide a copy of the records directly to the EPA along with a claim of confidentiality.

The Permittee shall also furnish to the Department, within a reasonable time specified by the Department, information or records requested in writing by the Department in order to determine if the Permittee is in compliance with the Stateonly enforceable conditions of this permit.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 27 of 70 24. COMPLIANCE REQUIREMENTS

[COMAR 26.11.03.06.E(1)], [COMAR 26.11.03.06A(11)] and [COMAR 26.11.02.05]

The Permittee shall comply with the c onditions of this Pa rt 70 permit. Noncompliance with the permit constitutes a violation of the Clean Air Act,
and/or the Environmental Article Title 2 of the Annotated Code of Maryland and may subject the Permittee to:

a. Enforcement action,

b. Permit revocation or revision,

c. Denial of the renewal of a Part 70 permit, or

d. Any combination of these actions.

The conditions in this Part 70 permit are enforceable by EPA and citizens under the Clean Air Act except for the State-only enforceable conditions.

Under Environmental Article Sec. 2- 609, Annotated Code of Maryland, the Department may seek immediat e injunctive relief agains t a person who violates this permit in such a manner as to cau se a threat to human health or the
environment.

25. CREDIBLE EVIDENCE

Nothing in this permit shall be interpreted to preclude the use of credible evidence to demonstrate noncompliance with any term of this permit.

26. NEED TO HALT OR REDUCE ACTIVITY NOT A DEFENSE

[COMAR 26.11.03.06E(2)]

The need to halt or reduce activity in orde r to comply with the conditions of this permit may not be used as a de fense in an enforcement action.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 28 of 70 27. CIRCUMVENTION

[COMAR 26.11.01.06]

The Permittee may not install or use any article, machine, equipment or other contrivance, the use of which, without resulting in a reduction in the total weight of emissions, conceals or dilutes an emissions which would otherwise constitute a violation of any applicable air pollution cont rol regulation.

28. PERMIT SHIELD

[COMAR 26.11.03.23]

A permit shield as described in COMAR 26.11.03.23 shall only apply to terms and conditions in this Part 70 permit that have been specifically identified as covered by the permit shield. Neithe r this permit nor COMAR 26.11.03.23 alters the following:

a. The emergency order provisions in Sec. 303 of the Clean Air Act, including the authority of EPA under that section;

b. The liability of the Permittee for a vi olation of an applicable requirement of the Clean Air Act before or when this permit is issued or for a violation that continues after issuance;

c. The requirements of the Acid Rain Program, consistent with Sec. 408(a) of the Clean Air Act;

d. The ability of the Department or EPA to obtain information from a source pursuant to Maryland law and Sec. 114 of the Clean Air Act; or

e. The authority of the Department to enforce an applicable requirement of the State air pollution control law that is not an applicable requirement of
the Clean Air Act.

29. ALTERNATE OPERATING SCENARIOS

[COMAR 26.11.03.06A(9)]

For all alternate operating scenarios appr oved by the Department and contained within this permit, the Permittee, while changing from one approved scenario toESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 29 of 70 another, shall contemporaneously record in a log maintained at the facility each
scenario under which the emissions unit is operating and the date and time the
scenario started and ended.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 30 of 70 SECTION III PLANT WIDE CONDITIONS

1. PARTICULATE MATTER FROM CONSTRUCTION AND
DEMOLITION

[COMAR 26.11.06.03D]

The Permittee shall not cause or permit a ny building, its appurtenances, or a road to be used, constructed, altered, repaire d, or demolished without taking reasonable precautions to prevent particulat e matter from becoming airborne.

2. OPEN BURNING

[COMAR 26.11.07]

Except as provided in COMAR 26.11.07.04, the Permittee may not cause or permit an open fire from June 1 through August 31 of any calendar year. Prior to any open burning, the Permittee must re quest and receive approval from the Department.

3. AIR POLLUTION EPISODE

[COMAR 26.11.05.04]

When requested by the Department, the Pe rmittee shall prepare in writing standby emissions reduction plans, consistent with good industrial practice and safe operating procedures, for reducing emissi ons creating air pollution during periods of Alert, Warning, and Emergenc y of an air pollution episode.

4. REPORT OF EXCESS EMISSIONS AND DEVIATIONS

[ COMAR 26.11.01.07] and [COMAR 26.11.03.06C(7)]

The Permittee shall comply with the fo llowing conditions for occurrences of
excess emissions and deviations from re quirements of this permit including the State-only enforceable section:ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 31 of 70 a. Report any deviation from permit requirements that could endanger human health or the environment, by orally notifying the Department immediately upon discovery of the deviation;

b. Promptly report all occurrences of excess emissions that are expected to last for one hour or longer by orally notif ying the Department of the onset and termination of the occurrence;

c. When requested by the Department the Permittee shall report all deviations from permit conditions, including those attributable to malfunctions as defined in COMAR 26.11.01.07A, within 5 days of the request by submitting a written desc ription of the deviation to the Department. The written report must include the cause, dates and times of the onset and termination of the deviation, as well as the action planned or taken to reduce, eliminate, and prev ent the recurrence of the deviation;

d. The Permittee shall submit to the Department semi-annual monitoring reports that confirm that all required monitoring was performed, and that provide accounts of all deviations fro m permit requirements that occurred during the reporting periods. Reporting periods shall be January 1 through June 30 and July 1 through December 31, and reports shall be submitted within 30 days of the end of each reporting period. Each account of deviation shall include a description of the deviation, the dates and times of onset and termination, identifica tion of the person who observed or discovered the deviation, causes and corrective actions taken, and actions taken to prevent recurrence. If no deviations from permit conditions occurred during a repor ting period, the Permittee shall submit a written report that so states.

e. When requested by the Department, the Permittee shall submit a written report to the Department within 10 days of receiving the request concerning an occurrence of excess em issions. The report shall contain the information required in COMAR 26.11.01.07D(2).

5. ACCIDENTAL RELEASE PROVISIONS

[COMAR 26.11.03.03B(23)] and [40 CFR Part 68]

Should the Permittee become subject to 40 CFR Part 68 during the term of this permit, the Permittee shall submit risk management plans by the date specified in 40 CFR Part 68.150 and shall certify compliance with the requirements of 40 CFRESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 32 of 70 Part 68 as part of the annual compliance certification as requ ired by 40 CFR Part
70.

The Permittee shall initiate a permit revision or reopening according to the procedures of 40 CFR Part 70.7 to incor porate appropriate permit conditions into
the Permittee's Part 70 Permit.

6. GENERAL TESTING REQUIREMENTS

[COMAR 26.11.01.04]

The Department may require the Permittee to conduct, or have conducted, testing to determine compliance with this Part 70 permit. The Department, at its option, may witness or conduct these tests. This testing shall be done at a reasonable time, and all information gathered during a testing operation will be provided to the Department.

7. EMISSIONS TEST METHODS

[COMAR 26.11.01.04]

Compliance with the emissions standards and limitations in this Part 70 permit shall be determined by the test methods designated and described below or other test methods submitted to and approved by the Department.

Reference documents of the test methods approved by the Department include the following:

a. 40 CFR Part 60, appendix A

b. 40 CFR Part 51, appendix M

c. The Department's Technical Memorandum 91-01 "Test Methods and Equipment Specifications for Stationary Sources", (January 1991), as amended through Supplement 2, (July 1, 1992)ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 33 of 70 8. EMISSIONS CERTIFICATION REPORT

[COMAR 26.11.02.19C and D] and 26.11.01.05-1

The Permittee shall certify actual annual emissions of regulated pollutants from the facility on a calendar year basis.

a. The certification shall be on a form obtained from the Department and submitted to the Department not later than April 1 of the year following the year for which the certification is required;

b. The individual making the certification shall certify that the information is
accurate to the individual's best knowledge. The individual shall be:

(1) Familiar with each source for which the certification form is submitted, and

(2) Responsible for the accuracy of the emissions information;

c. The Permittee shall maintain reco rds necessary to support the emissions certification including the followi ng information if applicable:

(1) The total amount of actual em issions of each regulated pollutant and the total of all regulated pollutants;

(2) An explanation of the methods used to quantify the emissions and the operating schedules and produc tion data that were used to determine emissions, including significant assumptions made;

(3) Amounts, types, and analyses of all fuels used;

(4) Emissions data from continuous emissions monitors that are required by this permit, including monitor calibration and malfunction information;

(5) Identification, description, and use records of all air pollution control equipment and compliance monitoring equipment including:

(a) Significant maintenance performed, (b) Malfunctions and downtime, and (c) Episodes of reduced efficiency of all the equipment;ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 34 of 70 (6) Limitations on source operation or any work practice standards that significantly affect emissions; and

(7) Other relevant informati on as required by the Department.

9. COMPLIANCE CERTIFICATION REPORT

[COMAR 26.11.03.06G(6) and (7)]

The Permittee shall submit to the Depa rtment and EPA Region III a report certifying compliance with each term of this Part 70 permit including each applicable standard, emissions limitati on, and work practice for the previous calendar year by April 1 of each year.

a. The compliance certification shall include:

(1) The identification of each term or condition of this permit which is the basis of the certification;

(2) The compliance status;

(3) Whether the compliance was continuous or intermittent;

(4) The methods used for determining the compliance of the source, currently and over the reporting period; and

(5) Any other information required to be reported to the Department that is necessary to determin e the compliance status of the Permittee with this permit.

b. The Permittee shall submit the compliance certification reports to the Department and EPA simultaneously.

10. CERTIFICATION BY RESPONSIBLE OFFICIAL

[COMAR 26.11.02.02F]

All application forms, reports, and comp liance certifications submitted pursuant to this permit shall be certified by a respons ible official as to truth, accuracy, and completeness. The Permittee shall expedi tiously notify the De partment of an appointment of a new responsible official.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 35 of 70 The certification shall be in the following form:

"I certify under penalty of law that this document and all attachments were prepared under my direction or supervisi on in accordance with a system designed to assure that qua lified personnel properly gather and evaluate the information submitted. Based on my inquiry of the person or persons who manage the system, or those persons directly responsible for gathering the information, the information submitted is, to the best of my knowledge and belief, true, accurate, and complete. I am aware that there are significant penalties for submitting false information, including the possibility of fine and imprisonment for knowing
violations."

11. SAMPLING AND EMISSIONS TESTING RECORD KEEPING

[COMAR 26.11.03.06C(5)]

The Permittee shall gather and retain th e following information when sampling and testing for compliance demonstrations:

a. The location as specified in this permit, and the date and time that samples and measurements are taken;

b. All pertinent operating conditions existing at the time that samples and measurements are taken;

c. The date that each analysis of a sa mple or emissions test is performed and the name of the person taking the samp le or performing the emissions test;

d. The identity of the Permittee, individual , or other entity that performed the analysis;

e. The analytical techniques and methods used; and

f. The results of each analysis.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 36 of 70 12. GENERAL RECORD KEEPING

[COMAR 26.11.03.06(C)(6)]

The Permittee shall retain re cords of all monitoring data and support information that supports the compliance ce rtification for a period of five years from the date that the monitoring sample, measurement, application, report or emissions test was completed or submitted to the Department.

These records and support information shall include:

a. All calibration and maintenance records;

b. All original data collected from continuous monitoring instrumentation;

c. Records which support the annua l emissions certification; and

d. Copies of all reports required by this permit.

13. GENERAL CONFORMITY

[COMAR 26.11.26.09]

The Permittee shall comply with the general conformity requirements of 40 CFR Part 93, Subpart B and COMAR 26.11.26.09.

14. ASBESTOS PROVISIONS

[40 CFR Part 61, Subpart M]

The Permittee shall comply with 40 CFR Part 61, Subpart M when conducting any renovation or demolition ac tivities at the facility.

15. OZONE DEPLETIN G REGULATIONS

[40 CFR Part 82, Subpart F]

The Permittee shall comply with the st andards for recycling and emissions reduction pursuant to 40 CF R Part 82, Subpart F, except as provided for MVACs in subpart B:ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 37 of 70 a. Persons opening appliances for mainte nance, service, repair, or disposal must comply with the prohibitions and required practices pursuant to §§82.154 and 82.156.

b. Equipment used during the maintenance, service, repair or disposal of appliances must comply with the st andards for recycling and recovery equipment pursuant to §82.158.

c. Persons performing maintenance, servi ce, repairs or dispos al of appliances must be certified by an approved tec hnician certification program pursuant to §82.161.

d. Persons performing maintenance, service, repairs or dispos al of appliances must certify with the Administrator pursuant to §82.162.

e. Persons disposing of small appliances, MVACS, and MVAC-like appliances as defined in §82.152, must comply with record keeping requirements pursuant to §82.166 .

f. Persons owning commerci al or industrial proces s refrigeration equipment must comply with the leak repa ir requirements pursuant to §82.156.

g. Owners/operators of appliances normally containing 50 or more pounds of refrigerant must keep records of refr igerant purchased and added to such appliances pursuant to §82.166.

16. ACID RAIN PERMIT- Not ApplicableESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 38 of 70 SECTION IV PLANT SPECIFIC CONDITIONS

This section is comprised of tables cont aining the emissions standards, emissions limitations and work practices a pplicable to each emissions unit located at this facility. The Permittee shall comply with all applicable emissions standards, emissions limitations and work practices contained herein.

These tables also list testing, monitoring, record keeping and reporting requirements specific to each emissions unit. In addition to the requi rements listed in Section IV , the Permittee is subject to the general testing, monitoring, re cord keeping and reporting requirements contained in Section III, Plant Wide Conditions of this permit.

1. Fugitive Sources (Not subject to MACT Requirements) - 1 Emissions Unit Number(s) 1A. Quarry a. EU-101 Quarry overburden removal b. EU-1AA Drilling and Blasting c. EU-102 Quarry Raw Material (Limestone) Loading d. EU-1BB Raw Material Loading - Sand c. EU-103 Quarry Haul Roads 1B. Raw Material Stockpiles, Unloading, Storage, and Handling a. EU-104 Limestone Stockpile A b. EU-105 Raw Material Unloading c. EU-204 Limestone Stockpile B d. EU-301 Raw Material Unloading

e. EU-303-R Raw Material Storage Area
f. EU-304 Raw Material Blending

g. EU-305 Raw Material Feed Bins
h. EU-309 Alumina Beari ng Materials Stockpile i. EU-230 Iron Bearing Materials Stockpile j. EU-311 Gysum Stockpile
k. EU-3AA Calcium Beari ng Material Stockpile l. EU-3BB Silica Bearing Material Stockpile 1C. Coal Feed System a. EU-302 Coal/Coke Unloading b. EU-303-F Fuel Storage Area c. EU-308 Coal/Coke Stockpile d. EU-3CC Coal/Coke Storage & Conveying e. EU-3DD Coal Mill No.1 System f. EU-3EE Coal Mill No.2 System

1D. Clinker Handling a. EU-501 Clinker Stockpile A b. EU-502 Clinker Stockpile BESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 39 of 70 1E. Waste dust collection and handling a. EU-405 Recycled Dust Collection System b. EU-407 CKD Loading to Truck c. EU-408 CKD Hauling d. EU-409 Recycled Dust Handling e. EU-415 Outside Storage of CKD 1F. Gypsum Unloading EU-505 Gypsum Unloading 1G. Plant Hauling Roads
EU-701 Plant Haul Roads Applicable Standards/Limits: (1) COMAR 26.11.06.03C(1) - Particulate matter Emissions. A person may not cause or permit emissions from an unconfined source without taking reasonable precautions to prevent partic ulate matter from becoming airborne. (2) COMAR 26.11.06.03D - Particulate matter from Materials Handling and Construction. A person may not cause or permit any material to be handled, transported, or stored, or a building, its appurtenances, or a road to be used, constructed, altered, repaired, or demolished without taking reasonable precautions to prevent particulat e matter from becoming airborne

. Testing Requirements:
None. Monitoring Requirements: (1) The Permittee shall comply with and update as needed the best management plan that describes the procedures and methods that will be used to take reasonable precautions. The management pl an may be included in the written operation and maintenance plan required under the Portland Cement MACT. [COMAR 26.11.03.06C] (2) The Permittee shall perform a walk through inspection of the facility to observe each emissions unit to verify that reasonable precautions are being implemented and to determine whether the reasonable precautions need to be revised. The inspection shall be conduc ted at a minimum of once per month at
times when the effectiveness of the reasonable precautions can be assessed. [COMAR 26.11.03.06C] Record Keeping Requirements: The Permittee shall maintain the best manage ment plan and record s of the dates and inspection results for at least five (5) years and make them available to the Department upon request. At a minimum, the most recent two years of data shall be retained on site. The remaining three years of data may be retained off site. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or on microfiche. [COMAR 26.11.03.06C] Reporting Requirements:
NoneESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 40 of 70 A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.

2. Point Sources (Not subject to MACT Requirements) 2 Emissions Unit Number(s) 2A. Raw Material Handling a. EU-201 Primary Crusher b. EU-202 Impactor Building c. EU-203 Transfer Tower 2B. Dust Waste Collection and Handling a. EU-406 Dust System Discharge b. EU-410 CKD Transfer to Silos
c. EU-411 CKD Silo 31 d. EU-412 Recycled DustTransfer e. EU-413 Dust Scoop #1 f. EU-414 Dust Scoop #2 Applicable Standards/Limits:
A. Visible Emissions COMAR 26.11.06.02C(1) - A person may not cause or permit the discharge of emissions from any installation or building, other than water in an uncombined form, which is greater than 20 percent opac ity, except as provided under COMAR 26.11.06.02A(2).

B. Particulate Matter Emissions (1) For the installations constr ucted before January 17, 1972: COMAR 26.11.06.03B(1)(b)(i) which prohibits the discharge of particulate matter emissions from confin ed sources into the atmosphere in excess of the limit determined from the Table 1 or determined by the following equation when the process rate exceeds 60,000 pounds per hour: E (lb/hr) = 55.0 x P(0.11 power) – 40, wher e P is the process weight in tons per hour.

For those processes in which the process weight per hour exceeds 60,000 pounds (27,200 kilograms), the maximum allowable weight of particulate matter discharged per hour may ex ceed that calculated by the equation shown above provided that the concentr ation of particulate matter in the gases discharged to the atmosphe re is less than 0.05 gr/scfd (115 mg/dscm). [COMAR 26.11.06.03B(1)(b)(ii)] (2) For the installations construc ted on or after January 17, 1972: COMAR 26.11.06.03B(1)(b)(ii) - A person may not cause or permit particulate matter to be discharged fr om any installation in excess of 0.05ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 41 of 70 gr/SCFD (114.5 mg/dscm). Testing Requirements:
None Monitoring Requirements:

A. The Permittee shall perform a monthly si x-minute EPA Reference Method 9 test
of the exhaust stack of each emissions unit. The test must be conducted while the emissions unit is in operation. The Permittee shall perform the following, if emissions are greater than 20 percent opacity: (1) Inspect emission control sy stem and process operations; (2) Perform all necessary adjustments and/ or repairs to the emission unit within 48 hours, so that visible emissions ar e reduced to below 20 percent opacity; (3) Document, in writing, the results of the inspections, adjustments and/or repairs; and (4) After 48 hours, if the required adjust ments and/or repairs had not reduced the visible emissions below 20 pe rcent opacity, perform Method 9 observations once daily for 12 minutes until corrective actions have reduced
emissions to less th an 20 percent. [COMAR 26.11.03.06C]

B1. The exhaust gas from each emissions unit shall vent thr ough a dust collector designed to meet the particulate matter emissions limits before discharging into the atmosphere. [COMAR 26.11.03.06C] B2. The Permittee shall comply with and upda te the preventative maintenance plan for each baghouse that describes the mainte nance activity and time schedule for completing each activity. The preventative maintenance plan may be included in a written operation and maintenance plan required under the Portland Cement MACT. The Permittee shall perform mainte nance activities within the timeframes established in the plan an d shall maintain a log wi th records of the dates maintenance was performed. [COMAR 26.11.03.06C] Record Keeping Requirements: A. The Permittee shall maintain records of the results of the monthly inspections for at least five (5) years and make them av ailable to the Department upon request At a minimum, the most recent two years of data shall be retained on site. The remaining three years of data may be retained off site. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or
on microfiche. [COMAR 26.11.03.06C]

B. The log of inspection and maintenance records shall be kept for at least five (5) years and shall be made available to the Department upon request. At aESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 42 of 70 minimum, the most recent two years of data shall be retained on site. The remaining three years of data may be retained off site. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or
on microfiche. [COMAR 26.11.03.06C] Reporting Requirements:
None A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.

3. Fugitive Sources (Subject to MACT Requirements) 3 Emissions Unit Number(s) 3A. Raw Meal Feed a. EU-306 Raw Material Conveyors #1 b. EU-307 Raw Material Conveyors #2 c. EU-3FF Raw Mill No.1 d. EU-3GG Raw Mill No.2 e. EU-3HH Kiln Feed System 3B. Clinker Handling a. EU-503 Clinker Storage Area b. EU-504 Clinker Blending 3C. Finish mill Feed System a. EU-506 Gypsum Storage Area b. EU-507 Finish Mill NO.1 Feed System c. EU-508 Finish Mill NO.2 Feed System d. EU-509 Finish Mill NO.3 Feed System Applicable Standards/Limits:
A. Visible Emissions 40 CFR §63.1348 which limits opacity to 10% or less for each new or existing raw material, clinker, or finished produc t storage bin; conveying system transfer point; bagging system; and bulk loading or unloading system.

B. Particulate Matter Emissions (1) COMAR 26.11.06.03C(1) - Particulate Matter from Unconfined Sources - A person may not cause or permit emissions from an unconfined sources without taking reasonable precautions to prevent particulate matter from becoming airborne. (2) COMAR.26.11.06.03D - Particulate Matter fr om Materials Handling and Construction. A person may not cause or permit any material to be handled, transported, or stored, or a building, its appurtenances, or a road to be used, constructed, altered, re paired, or demolished without taking reasonable precautions to prevent particulate matter from becoming
airborne.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 43 of 70 Testing Requirements
A. and B. None Monitoring Requirements A1. The Permittee shall conduct a monthly 1-minute visible emissions test of each
emissions unit in accordance with Method 22 of Appendix A to part 60. The test
must be conducted while the emissions unit is in operation. If no visible
emissions are observed in six consecutiv e monthly tests for any emissions unit,the Permittee may decrease the frequency of testing from monthly to semiannually for that emissions unit. If visible emissions are observed during any semi-annual test, the Permittee must resume testing of that emissions unit on a monthly basis and maintain that schedule until no visible emi ssions are observed in six consecutive monthly tests. If no visible emissions are observed during the semi-annual test for any emissions unit, the Permittee may decrease the frequency of testing from semi-annually to annually for that emissions unit. If visible emissions are observed during any annual te st, the Permittee must resume testing of that emissions unit on a monthly ba sis and maintain that schedule until no
visible emissions are observed in six consecutive monthly tests.
If visible emissions are observed duri ng any Method 22 test, the Permittee shall initiate the corrective actions specified in the written operations and maintenance plan and conduct the follow-up Method 22 test until the problem is resolved. [40 CFR §63.1350(a)(4)(i)-(iv)] A2. The Permittee shall comply with and upda te as needed the written operations and maintenance plan which include s the following information: (1) Procedures for proper operation and ma intenance of the affected source and air pollution control devices in orde r to meet the emissions limits and operating limits of §§63.1348; and (2) Procedures to be used to peri odically monitor affected sources. [40 CFR §63.1350(a) and (b)]

B. None Record Keeping Requirements A. The Permittee shall maintain all records for at least five years following the date of each occurrence, measurement, main tenance, corrective action, report, or record. At a minimum, the most recent two years of data shall be retained on site. The remaining three years of data may be retained off site. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or on
microfiche. [40 CFR §63.1355]

B. None Reporting Requirements A. The Permittee shall submit a summary report semiannually, which contains all failures to comply with any provision of the operation and maintenance planESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 44 of 70 developed in accordance with §63.1350(a). [40 CFR §63.1354(b)(9)(v)]

B. None A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.

4. Kilns - Point Sources (Subject to MACT Requirements ) 4 Emissions Unit Number(s) a. EU-401 Pyroprocessing Area - Kiln System #1 b. EU-402 Pyroprocessing Area –Kiln System #2 Two (2) wet rotary kilns, each controlle d by a multiclone and an electrostatic precipitator (ESP), installed in 1958. Applicable Standards/Limits:
A. Visible Emissions (1) COMAR 26.11.06.02C (1) - A person may not cause or permit the discharge of emissions from any inst allation or building, other than water in an uncombined form, which is greate r than 20 percent opacity, except as provided under COMAR 26.11.06.02A(2). (2) 40 CFR §63.1343(b)(2) which limits opacity from the kiln to 20% or less.

B. Particulate Matter Emissions (1) COMAR 26.11.06.03B(1)(b)(i) which prohibits the discharge of particulate matter emissions from confin ed sources into the atmosphere in excess of the limit determined from the Table 1 or determined by the following equation when the process rate exceeds 60,000 pounds per hour: E (lb/hr) = 55.0 x P(0.11 power) – 40, wher e P is the process weight in tons per hour.

For those processes in which the process weight per hour exceeds 60,000 pounds (27,200 kilograms), the maximum allowable weight of particulate matter discharged per hour may ex ceed that calculated by the equation shown in (1) provided that the concen tration of particulate matter in the gases discharged to the atmosphere is less than 0.05 gr/s cfd (115 mg/dscm). [COMAR 26.11.06.03B(1)(b)(ii)] (2) 40 CFR §63.1343(b)(1) which limits particulate matter emissions from the kiln and raw mill to 0.15 kg per MG (0.3 lb per ton) of feed (dry basis).

C. Dioxins/Furans (D/F) 40 CFR §63.1343(b)(3) which prohibits D/F in excess of (1) 0.2 ng per dscm (8.7 X 10 –11 gr per dscf)(TEQ) correct ed to seven percent

oxygen; orESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 45 of 70 (2) 0.4 ng per dscm (1.7 x 10 -10 gr dscf)(TEQ) corrected to seven percent oxygen, when the temperature at the in let to the particulate matter air pollution control device is 204°C (400° F) or less.

D. NOx Emissions (1) COMAR 26.11.09.08H(2)(a) which limits NOx emissions to 1,000 pounds per hour on a 30-day rolling average. (2) COMAR 26.11.29.15C(1) which requires a person who owns or operates a cement manufacturing facility to eith er meet the applicable emissions standards in §C(2) of th is regulation or implement one of the following
control measures: (a) Install low NOx burners on each kiln; or (b) Modify each kiln to implement mid-kiln firing Note: The kiln has implemented mid-kiln firing. Compliance with the facility’s NOx emissions limit will be determined according to the NOx emissions
collected on the main kiln stack.

E. SOx Emissions (1) COMAR 26.11.06.05B(1) which limits the sulfur dioxide concentration in the exhaust gases not to exceed 2000 parts per million by volume corrected to 7 percent oxygen.

(2) COMAR 26.11.06.05B(2) which limits the content of sulfuric acid, sulfur trioxide, or any combination not to exceed 70 milligrams reported as sulfuric acid per cubic meter of gas corrected to 7 percent oxygen.

F. VOC Emissions COMAR 26.11.06.06B(2)(a) which limits Volatile Organic Compounds (VOC) emissions to 200 pounds per day, unless th e discharge is reduced by 85 percent
or more overall. Testing Requirements A, D, E, and F None

B. The Permittee shall conduct a particulat e matter emissions test at the interval stipulated in Subpart LLL (once every 5 years) using Method 5 or Method 17 of 40 CFR Part 60, Appendix A. Each perf ormance test shall consist of three separate runs under the conditions that exist when the affected source is operating under representative perfor mance conditions in accordance with 40 CFR Part 63, Subpart LLL. Each run sha ll be conducted for at least one hour, and the minimum sample volume shall be 0.85 dscm (30dscf). The average of the three runs shall be used to determine compliance. [40 CFR §63.1349(b)(1) and (c)]ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 46 of 70 C. The Permittee shall conduct a dioxins/furans emissions test at the interval stipulated in Subpart LLL (once every 2 1/2 years) using Method 23 of 40 CFR Part 60, Appendix A. (1) Each performance test shall consist of three separate runs ; each run shall be
conducted under the conditions that ex ist when the affected source is operating under representative perfor mance conditions in accordance with 40 CFR Part 63, Subpart LLL. The durati on of each run shall be at least three hours and the sample volume for each run shall be at least 2.5 dscm (90 dscf). The concentration shall be determined for each run and the arithmetic average of the concentrati ons measured for the three runs shall be calculated and used to determine compliance. (2) The temperature at the inlet to the ki ln or in-line kiln/raw mill PMCD must be continuously recorded during the period of the Method 23 test, and the continuous temperature record(s) must be included in the performance test
report. (3) One-minute average temperatures mu st be calculated for each minute of
each run of the test. (4) The run average temperature must be calculated for each run, and the average of the run average temperatures must be determined and included in the performance test report and will determine the applicable temperature limit in accordance with §63.1344(b). [40 CFR §63.1349(b)(3) and (d)] Monitoring Requirements
The Permittee shall obtain permission from the Department before burning, or receiving on the property, raw materials or fuels other than limestone, sand, clay mill scale, coal, petroleum coke, No.2 fuel oil, Grinell foundry sand, used tires, used oil, or
waste combustible fluids. [Permit to Operate 10-00013, issued May 10, 1999]

A1. The Permittee shall install, calibrate, maintain, and continuously operate a continuous opacity monitor (COM) located at the outlet of the PM control device to continuously monitor the opacity. Th e COM shall be installed, maintained, calibrated, and operated as required by 40 CFR Part 63, Subpart A (general provision) and 40 CFR Part 63, Appendi x B, Performance Specification 1. [40 CFR §63.1350 (c)(1)] and [COMAR 26.11.01.11B(2)(d)] A2. The COM shall automatically reduce all data to a 6-minute block average calculated from 36 or more equally spaced data points. [COMAR 26.11.01.11A(3) and .10G(2)(a)]

A and B The Permittee shall keep all air pollution control equipment, including the electrostatic precipitators, properly maintain ed and in good working order so as to assure full and continuous compliance with al l applicable regulations.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 47 of 70 [Permit to Construct 10-6-0002M]

A, B, and C The Permittee shall comply with and update the written operations and maintenance plan, which includes the following information: (1) Procedures for proper operation and ma intenance of the affected source and air pollution control devices in orde r to meet the emissions limits and operating limits of §63.1344; (2) Corrective actions to be ta ken when required by §63.1350(e); and (3) Procedures to be used to during an inspection of the components of the combustion system of each kiln and each in-line k iln located at the facility at least once per year. [40 CFR §63.1350(a) and (b)]

B. The exhaust gas from emissions unit sh all vent through a dust collector designed to meet the particulate matter emissions limit before discharging into the atmosphere: [COMAR 26.11.03.06C]

C1. The Permittee shall conduct an inspec tion of the components of the combustion system of each kiln at least once a year. [40 CFR §63.1350(i)] C2. The Permittee shall calibrate, mainta in, and continuously operate a continuous monitor to record the temper ature of the exhaust gases fr om the kiln at the inlet to or upstream of the PM control devices. (1) The recorder response range must in clude zero and 1.5 times either of the average temperature established according to the requirements in §63.1349(b)(3)(iv). (2) The reference method must be a National Institute of Standards and Technology calibrated reference thermo couple-potentiometer system or alternate reference, subject to approval by the Administrator. (3) The three-hour rolling average te mperature shall be calculated as the average of 180 successive one-minute average temperatures. (4) The period of time when one-minute averages are not available shall be ignored when calculating three-hour rolling averages. When one-minute averages become available, the firs t one-minute average is added to the previous 179 values to calculat e the three-hour rolling average. (5) The calibration of all thermocouples and other temperature sensors shall be verified at least once every three months. [40 CFR §63.1350(f)]

D and E. (1). The Permittee shall use a continuou s emissions monitoring system, (CEM)ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 48 of 70 to monitor NOx, carbon monoxide (CO), and SO 2 emissions from the main exhaust stack. The Permittee shall install, operate, maintain, and calibrate
the CEM in accordance with the Pe rformance Specifications under 40 CFR Part 60, Appendix B and the Quality Assurance Procedures under 40 CFR Part 60, Appendix F and MDE’s Technical Memorandum TM-90-01. [COMAR 26.11.09.08H(1) and Administrative Order by Consent of

September 13, 2001] (2). The Permittee shall operate the CEM to record not less than four equally spaced data points per hour and to au tomatically reduce data in terms of averaging times consistent with applicable emission standards. [COMAR 26.11.01.11D(3)]

E. SO 2 Emissions As an operational limit, the Permittee shall not burn in the kilns coal with a sulfur
content that exceeds 3. 5% by weight or dis tillate fuel oil with a sulfur content that exceeds 0.3 % by weight to support mass balance calculations of sulfur dioxide
emissions from the kilns unless the Permitt ee applies for and obta ins an approval or permit from the Department . The Permittee may burn wh ole tires and used oil or waste combustible fluid (as defined by COMAR 26.11.09. 10B & C) as supplemental
fuels in the kiln s

. [Permit to Construct 10-6-0002 M]

F. VOC Emissions (1) The temperature between the preheating and calcining zones shall be at least
1500° F when tires are burned. [Permit to Constr uct 10-6-0002 M] (2) The oxygen concentration in the flue gas leaving each kiln shall not fall below 1.0 percent when tires are being burned. [Permit to Constr uct 10-6-0002 M] (3) The Permittee shall store all tires, except those being fed to the kiln, in trailers. [Permit to Construc t 10-6-0002 M] Record keeping Requirements A, B, and C
The Permittee shall maintain all records co llected from both testing and monitoring requirements for at least five years fo llowing the date of each occurrence, measurement, maintenance, corrective action, report or record. At a minimum, the most recent two years of data shall be reta ined on site; the rema ining three years of data may be retained offsite. The files may be maintained on microfilm, on a computer, on floppy disks, on magn etic tape, or on microfiche. [40 CFR §63.1355]

D and E. (1) The Permittee shall use the emissions data from the Facility’s SO 2 , CO, and NOxESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 49 of 70 CEMs in all future permit applications submitted to the Department for the purpose of establishing the Facility’s baseline emi ssions or other emissions related purpose. [Administrative Order by Consent of September 13, 2001]

(2) The Permittee shall maintain all records collected from both testing and monitoring requirements for at least fi ve years following the date of each occurrence, measurement, maintenance, co rrective action, report, or record. At a minimum, the most recent two years of data shall be retained on site. The remaining three years of data may be retained off site. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or
on microfiche. [COMAR 26.11.03.06C]

F. VOC Emissions (1) The Permittee shall record hourly th e temperature between the preheating and calcining zones of the kilns. (2) The Permittee shall record the oxygen concentration and temperature in the flue gas leaving the kilns. (3) The Permittee sha ll keep the followi ng records on site for at least 5 years and
shall make them available to the Department upon request: (a) the kiln rotation rate, raw materials feed rate, and cement clinker production rate; (b) hourly fuel usage rate of each type of fuel used, the tire usage rate, and whole scrap tire charging rate; and (c) the oxygen concentration and temper ature in the flue gas leaving the
kiln. (d) Temperature recordings between th e preheating and cal cining zones of
the kilns. [Permit to Construct 10-6-0002M] Reporting Requirements For five years from the effective date (Sep tember 13, 2001) of this order, the Permittee shall submit a copy the Facility’s annual emissions inventory report to EPA within twenty (20) days of submitting such repor t to MDE annually. Documents, including plans, reports, modifications and any othe r correspondence to be submitted pursuant to this Order shall be sent by certified or overnight mail to Christopher Pilla at the following address: Christopher Pilla (3AP12) Associate Director, Office of Air Enforcement And Permit Review, Air Protection Division U.S. EPA Region III Philadelphia, PA 19103 [Administrative Order by Consent of September 13, 2001 ]ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 50 of 70 A. If the total continuous monitoring sy stem downtime for any CEM or any continuous monitoring system (CMS) for th e reporting period is ten percent or greater of the total operating time for the reporting period, the Permittee shall submit an excess emissions and continuous monitoring system performance report along with the summary report. [40 CFR §63.1354(b)(10)]

A and C.

The Company shall submit to the Department semiannually a Summary Report - Gaseous and Opacity Excess Emissions and Continuous Monitoring System (CMS) Performance on January 31 st and July 31 st of each year. The Summary Report shall include the following items: (1) Company name and address; (2) Identification of th e hazardous pollutant; (3) A brief description of the process; (4) The emissions limit; (5) Name, title and signature of responsible party; (6) Date of report; (7) All exceedances of the three hour av erage inlet temperature limit to the Particulate matter control device; (8) All failures to calibrate thermocouples; (9) The results of any burner inspections; (10) All failures to comply with the operations and maintenance plan; (11) The date of the latest CMS certification or audit; (12) The total operating time of the affect ed source during the reporting period;
and (13) A CMS performance summary, including: (a) the total CMS downtime during th e operating period (in minutes); (b) the total CMS downtime expressed as a percent of the total operating time; and (c) a breakdown of total CMS downtime into periods due to:
i. Monitoring equipment malfunctions,
ii. Non monitoring equipment malfunctions,
iii. Quality assurance/quality control calibrations,
iv. Other known causes, and

v. Other unknown causes. [40 CFR §63.1354b(9) and §63.10(e)(3)(vi)]

A, D, and E The Permittee shall submit a quarterly summary report to the Department not later than 30 days following each calendar quarter. The report shall be in a format approvedESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 51 of 70 by the Department, and shall include the following: (1) The cause, time periods, and magnitude of all emissions which exceed the applicable emissions standards; (2) The source downtime including the time and date of the beginning and end of each downtime period and whether the source downtime was planned or unplanned; (3) The time periods and cause of all CE M downtime includi ng records of any repairs, adjustments, or maintenan ce that may affect the validity of emissions data; (4) Quarterly totals of excess emissi ons, installation downtime, and CEM downtime during the calendar quarter; (5) Quarterly quality assurance activities; (6) Daily calibration activities that include reference values, actual values, absolute or percent of span di fferences, and drift status; and (7) Other information required by the Department that is determined to be necessary to evaluate the data, to ensu re that compliance is achieved, or to determine the applicability of this regulation. [Permit to Construct 10-6-0002M, COMAR 26.11.01.11A(3) and COMAR 26.11.01.10G(2)(d)]

B and C. (1) The Permittee shall submit the results of performance tests before the close
of business on the 60 th day following the completion of the performance

test. [40 CFR §63.1354(b)(1)] & [40 CFR §63.10(d)(2)] (2) At least 30 days prior to each stack emissions testing, the Permittee shall submit to the Department a stack test protocol for review and approval. [COMAR 26.11.03.06C]

D. NOx Emissions
The Permittee shall submit emissions data to the Department for each control period by November 30 beginning with the 2002 control period. [COMAR 26.11.29.15B(1)(c)]

E. SO 2 Emissions The Permittee shall file with the Depa rtment a quarterly report of excess emissions of sulfur dioxide, including th e date, time, duration, and cause of each

occurrence. [COMAR 26.11.01.07C and Permit to Construct 10-6-0002M]

F. None A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 52 of 70 5. Clinker Coolers and Drag Conveyors - (Subject to MACT Requirements) 5 Emissions Unit Number(s)
a. EU-403 Clinker Cooler #1 and Clinker Drag Conveyors
b. EU-404 Clinker Cooler #2 and Clinker Drag Conveyors Two Clinker Coolers each controlled by a baghouse and venting through a single stack equipped with a continuous opacity monitor (COM) Applicable Standards/Limits:
A. Visible Emissions (1) COMAR 26.11.06.02C(1) - A person may not cause or permit the discharge of emissions from any inst allation or building, other than water in an uncombined form, which is grea ter than 20 percent opacity, except as provided under COMAR 26.11.06.02A(2). (2) 40 CFR §63.1345a(2), which limits opacity from the clinker cooler to 10 percent or less.

B. Particulate Matter Emissions (1) COMAR 26.11.06.03B(1)(b) which prohibits the di scharge of particulate
matter emissions from confined source s into the atmosphere in excess of the limit determined from the Table 1 or determined by the following equation when the process rate exceeds 60,000 pounds per hour: E (lb/hr) = 55.0 x P(0.11 power) – 40, wh ere P is the process weight in tons per hour.

For those processes in which the process weight per hour exceeds 60,000 pounds (27,200 kilograms), the maximum allowable weight of particulate matter discharged per hour may exceed that calculated by the equation shown above provided that the concentr ation of particulate matter in the gases discharged to the atmosphe re is less than 0.05 gr/scfd (115 mg/dscm). [COMAR 26.11.06.03B(1)(b)(ii)] (2) 40 CFR §63.1345a(1) which limits particulate matter from the clinker cooler to 0.050 kg per Mg (0.10 lb per ton) of feed (dry basis) to the kiln. Testing Requirements
A. None

B. The Permittee shall conduct a particulat e matter emissions test at the interval stipulated in Subpart LLL using Me thod 5 or Method 17 of 40 CFR Part 60, Appendix A. Each performance test shall consist of three separate runs under the
conditions that exist when the affected source is operating under representative performance conditions in accordance with 40 CFR Part 63, Subpart LLL. Each
run shall be conducted for at least on e hour, and the minimum sample volumeESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 53 of 70 shall be 0.85 dscm (30 dscf). The averag e of the three runs shall be used to determine compliance. [40 CFR §63.1349(b) and (c)] Monitoring Requirements
A1. The Permittee shall install, calibrate, maintain, and continuously operate a continuous opacity monitor (COM) located at the outlet of the PM control device to continuously monitor the opacity. Th e COM shall be installed, maintained, calibrated, and operated as required by 40 CFR Part 63, Subpart A (general provision) and 40 CFR Part 60, Appendi x B, Performance Specification 1. [40 CFR §63.1350(d)(1)] A2. The COM shall automatically reduce all data to 6-minute block averages calculated from 36 or more equally spaced data points. [COMAR 26.11.01.10G(2)(a)]

B. The exhaust gases from each Clinker Cooler and each Drag Conveyor shall vent through a dust collector designed to meet the particulate matter emissions limit before discharging into the atmosphere. [COMAR 26.11.03.06C]

A and B The Permittee shall comply with and update as needed the written operations and maintenance plan, which includes the following information: (1) Procedures for proper operation and ma intenance of the affected source and air pollution control devices in orde r to meet the emissions limits and operating limits of §63.1345; (2) Corrective actions to be take n when required by §63.1350(e); and (3) Procedures to be used to periodical ly monitor affected sources subject to opacity standards under§63.1345. [40 CFR §63.1350(a) and (b)] Record Keeping Requirements
A and B The Permittee shall maintain all records for at least five years following the date of each occurrence, measurement, maintenance, co rrective action, report or record. At a minimum, the most recent two years of data shall be retained on site; the remaining three years of data may be retained offsite . The files may be main tained on microfilm, on a computer, on floppy disks, on magnetic tape, or no microfiche. [40 CFR §63.1355] Reporting Requirements A1. If the total continuous monitoring system downtime for any CEM or any continuous monitoring system (CMS) for th e reporting period is ten percent or greater of the total operating time of the reporting period, the Permittee shall submit an excess emissions and continuous monitoring system performance report along with the summary report.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 54 of 70 [40 CFR §63.1354(b)(10)] A2. The Permittee shall submit a quarterly summary report to the Department not later than 30 days following each calendar quarter. The report shall be in a format approved by the Department, and shall include the following: (1) The cause, time periods, and magnitude of all emissions which exceed the applicable emissions standards; (2) The source downtime including the time and date of the beginning and end of each downtime period and whether the source downtime was planned or unplanned; (3) The time periods and cause of all CEM downtime including records of any repairs, adjustments, or maintenan ce that may affect the validity of emissions data; (4) Quarterly totals of excess emi ssions, installation downtime, and CEM downtime during the calendar quarter; (5) Quarterly quality assurance activities; (6) Daily calibration activities that include reference values, actual values, absolute or percent of span di fferences, and drift status; and (7) Other information required by the Department that is determined to be necessary to evaluate the data, to ensu re that compliance is achieved, or to determine the applicability of this regulation. [COMAR 26.11.01.11A(3) and COMAR26.11.01.10G(2)(d)]

B1. The Permittee shall submit the results of performance tests before the close of
business on the 60 th day following the completion of the performance test. [40 CFR §63.1354(b)(1)] & [40 CFR §63.10(d)(2)] B2. At least 30 days prior to each stack emissions testing, the Permittee shall submit to the Department a stack test pr otocol for review and approval. [COMAR 26.11.03.06C]

A and B The Permittee shall submit a summary report semiannually, which contains all failures to comply with any provision of the oper ation and maintenance plan developed in accordance with §63.1350(a). [40 CFR §63.1354(b)(9)(v)] A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.

6. Finish Mills - Point Sources (Subject to MACT Requirements) 6 Emissions Unit Number(s) a. EU-510 Finish Mill #1 System b. EU-511 Finish Mill #2 System c. EU-512 Finish Mill #3 SystemESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 55 of 70 Applicable Standards/Limits:
A. Visible Emissions (1) COMAR 26.11.06.02C(1) - A person may not cause or permit the discharge of emissions from any insta llation or building, other than water in an uncombined form, which is greate r than 20 percent opacity, except as provided under COMAR 26.11.06.02A(2). (2) 40 CFR §63.1347 which limits opacity from the finish mills to 10 percent
or less.

B. Particulate Matter Emissions COMAR 26.11.06.03B(1)(b)(i) which prohibits the di scharge of particulate matter emissions from confined sources into the atmosphere in excess of the limit determined from the Table 1 or determined by the following equation when the process rate exceeds 60,000 pounds per hour: E (lb/hr) = 55.0 x P(0.11 power) – 40, where P is the process weight in tons per
hour.

For those processes in which the pr ocess weight per hour exceeds 60,000 pounds (27,200 kilograms), the maximum allowa ble weight of particulate matter discharged per hour may exceed that calculated by the equation shown above provided that the concentration of particulat e matter in the gases discharged to the atmosphere is less than 0.05 gr/scfd (115 mg/dscm). [COMAR 26.11.06.03B(1)(b)(ii)] Testing Requirements
A. None

B. None Monitoring Requirements A1. The Permittee shall monitor opacity by conducting daily visual emissions observations of the mill sweep and air separator PMCDs of these affected sources, in accordance with the procedures of Method 22 of appendix A of part 60 of this chapter. The Method 22 test shall be conducted while the source is operating under representative perfor mance conditions in accordance with 40 CFR 63.7(e). The duration of the Method 22 te st shall be six minutes. If visible emissions are observed during any Me thod 22 visible emissions test, the
Permittee shall: (1) Initiate, within one-hour, the corrective actions specified in the site specific written operations and an maintena nce plan required under 40 CFR §63.1350(a); (2) Within 24 hours of the end of the Method 22 test in which visible emissions were observed, conduct a follow-up Method 22 test of each stack
from which visible emissions were observed during the previous Method 22 test; andESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 56 of 70 (3) If visible emissions are observed during the follow-up Method 22 test, conduct a visual opacity test of each stack from which visible emissions were observed in accordance with Method 9 of Appendix A of 40 CFR Part
60. The Method 9 test shall be conducte d within one-hour of the end of the follow-up Method 22 test and the duration of the Method 9 test shall be at least thirty minutes. [40 CFR §63.1350(e)] A2. The Permittee shall comply with and upda te as needed the written operations and maintenance plan. The plan shall include the following information: (1) Procedures for proper operation and ma intenance of the affected source and air pollution control devices in orde r to meet the emissions limits and operating limits of §63.1347; and (2) Procedures to be used to period ically monitor affected sources. [40 CFR §63.1350(a) and (b)]

B1. The exhaust gases from each emissions unit shall vent thr ough a dust collector designed to meet the particulate matter emissions limit before discharging to the atmosphere. [COMAR 26.11.03.06C]

B2. The Permittee shall comply with and upda te the preventative maintenance plan for each baghouse that describes the mainte nance activity and time schedule for completing each activity. The preventative maintenance plan may be included in a written operation and maintenance plan required under the Portland Cement MACT. The Permittee shall perform mainte nance activities within the timeframes established in the plan an d shall maintain a log wi th records of the dates maintenance was performed. [COMAR 26.11.03.06C] Record Keeping Requirements A. The Permittee shall maintain all records for at least five years following the date of each occurrence, measurement, main tenance, corrective action, report or record. At a minimum, the most recent two years of data shall be retained on site; the remaining three years of data may be retained offsite. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or
no microfiche. [40 CFR §63.1355]

B. The log of inspection and maintenance records shall be kept for at least five (5) years and shall be made available to the Department upon request. At a minimum, the most recent two years of data shall be retained on site. The remaining three years of data may be retained off site. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or on
microfiche.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 57 of 70 [COMAR 26.11.03.06C] Reporting Requirements A1. The Permittee shall submit a summary of excess emissions in a semiannual monitoring report. (See also Conditi on 4, Report of Excess Emissions and Deviations on page 30). The report sh all be delivered or postmarked by the 30 th day following the end of each calendar half. [40 CFR §63.10(e)(3)(v)] A2. The Permittee shall submit a summary re port semiannually, which contains all failures to comply with any provision of the operation and maintenance plan developed in accordance with §63.1350(a). [40 CFR §63.1354(b)(9)(v)]

B. None included in A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.

7. Cement Storage, Bagging, and Loadout - Point Sources (Subject to MACT Requirements) 7 Emissions Unit Number(s) a. EU-513 Cement Cooler System b. EU-601 Cement Storage Silos c. EU-602 Bagging System d. EU-603 Cement Storage Silos and StarBins e. EU-604 Bulk Loading System f. EU-605 East Side Scale & Loading Station g. EU-606 West Side Scal e & Loading Station Applicable Standards/Limits:
A. Visible Emissions (1) COMAR 26.11.06.02C(1) - A person may not cause or permit the discharge of emissions from any insta llation or building, other than water in an uncombined form, which is greate r than 20 percent opacity, except as provided under COMAR 26.11.06.02A(2). (2) 40 CFR §63.1348 which limits opacity to 10% or less for each new or existing raw material, clinker, or fi nished product storage bin; conveying system transfer point; bagging syst em; and bulk loading or unloading
system.

B. Particulate Matter Emissions (1) Permit to Construct 10-6-0395M - The particulate matter emissions from the masonry production and packaging operation shall be less than 0.021gr/SCFD (48.1 mg/dscm) unless the Permittee can dem onstrate to the Department that the net PM 10 emissions increase resulting from the masonry production and packaging operation is less than 15 tons per year. (2) COMAR 26.11.06.03B(1)(b) which prohibits the di scharge of particulateESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 58 of 70 matter emissions from confined sources into the atmosphere in excess of the limit determined from the Table 1 or determined by the following equation when the process rate exceeds 60,000 pounds per hour: E (lb/hr) = 55.0 x P(0.11 power) – 40, wher e P is the process weight in tons per hour.

For those processes in which the process weight per hour exceeds 60,000 pounds (27,200 kilograms), the maximum allowable weight of particulate matter discharged per hour may ex ceed that calculated by the equation shown above provided that the concentr ation of particulate matter in the gases discharged to the atmosphere is less than 0.05 gr/s cfd (115 mg/dscm). [COMAR 26.11.06.03B(1)(b)(ii)] Testing Requirements
None Monitoring Requirements A1. The Permittee shall conduct a monthly 1-minute visible emissions test of the
exhaust stack of each affected source in accordance with Method 22 of Appendix
A to Part 60. The test must be conduc ted while the affect ed source is in operation. If no visible emissions are obser ved in six consecutive monthly tests for the exhaust stack of any affected source, the Permittee may decrease the frequency of testing from monthly to se mi-annually for the exhaust stack of that
affected source. If visible emissions are observed during any semi-annual test, the Permittee shall resume testing of the exhaust stack of that affected source on a monthly basis and maintain that schedule until no visible emissions are observed in six consecutive monthly tests. If no visible emissions are observed during the semi-annual test for the exhaus t stack of any affected source, the Permittee may decrease the frequency of testing from semi-annually to annually
for the exhaust stack of that affected s ource. If visible emissions are observed during any annual test, the Permittee shall re sume testing of the exhaust stack of that affected source on a monthly basis unt il no visible emissions are observed in six consecutive monthly tests.
If visible emissions are observed on any stack during any Method 22 test, the Permittee shall initiate, within one hour, the corrective actions specified in the written operations and maintenance pla n. Within 24 hours at the end of the Method 22 test, the Permittee shall conduc t a follow-up Method 22 test of each
stack from which visible emissions were observed during the previous Method 22
test. If visible emissions are still obs erved, conduct a visual opacity test in accordance with Method 9 of Appendix A of 40 CFR Part 60. The Method 9 test
shall be conducted within one-hour of the end of the follow-up Method 22 test
and the duration of the Method 9 test shall be at least six minutes. [40 CFR §63.1350(a)(4)(i)-(iv)] A2. The Permittee shall comply with and upda te as needed the written operations and maintenance plan which include s the following information:ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 59 of 70 (1) Procedures for proper operation and main tenance of the affected source and air pollution control devices in orde r to meet the emissions limits and operating limits of §§63.1348; and (2) Procedures to be used to peri odically monitor affected sources. [40 CFR §63.1350(a) and (b)]

B1. The total operating hour for the bagging operation for any 12 consecutive months shall be less than 7,000 hours unless the Permittee can demonstrate to the Department that the net PM 10 emissions increase resulting from the masonry production and packaging operation is less than 15 tons per year. [Permit to Construct 10-6-0395M] B2. The exhaust gases from each emissions unit shall vent through a dust collector to meet the particulate matter emissions limit before discharging into the atmosphere. [Permit to Construct 10-6-0395M and COMAR 26.11.03.06C] Record Keeping Requirements A. The Permittee shall maintain all records for at least five years following the date of each occurrence, measurement, main tenance, corrective action, report or record. At a minimum, the most recent two years of data shall be retained on site; the remaining three years of data may be retained offsite. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or on
microfiche. [40 CFR §63.1355]

A and B The pressure drop across the baghouse us ed to control the bagging operation shall be recorded at least once per operating day. [Permit to Construct 10-6-0395M]

B. The Permittee shall maintain the log of inspection and maintenance records for at least five (5) years an d make it available to the Department upon request. At a minimum, the most re cent two years of data shall be retained on site. The remaining three years of data may be retained off site. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or on microfiche. [COMAR 26.11.03.06C] Reporting Requirements A. The Permittee shall submit a summary report semiannually, which contains all failures to comply with any provision of the operation and maintenance plan developed in accordance with §63.1350(a). [40 CFR §63.1354(b)(9)(v)]

B. None be included inESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 60 of 70 A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.

8. Fuel Burning Equipment - (Not Subj ect to MACT or NSPS Requirements) 8 Emissions Unit Number(s) EU-702 Two 7.5 million Btu per hour heat in put fuel oil-fired Kewanee hot water
boilers Applicable Standards/Limits:
A. Visible Emissions COMAR 26.11.09.05A(1) which prohibits visible emissions from any fuel burning equipment

, other than water in an uncombined form, which is greater than 20 percent opacity. This requirem ent does not apply to emissions during load changing, soot blowing, start-up, or adjustments or occasional cleaning of control equipment if: (1) The visible emissions are not grea ter than 40 percent opacity; and (2) The visible emissions do not occur fo r more than 6 consecutive minutes in any sixty-minute period.

B. Sulfur Dioxide Emissions COMAR 26.11.09.07A(1)(c), which limits the sulfur content of distillate fuel oil to 0.3 percent by weight. Testing Requirements
None Monitoring Requirements A1. The Permittee shall properly operate a nd maintain the boilers in a manner to prevent visible emissions. A2. The Permittee shall visually inspect the exhaust stack of each boiler using 40 CFR 60 Appendix A, Reference Method 22 ( one-minute) observation monthly and record the results of each observation. If the emissions in the exhaust gases are visible, the facility will perform the following: (1) Inspect all process and/or control equipment that may affect visible emissions; (2) Perform all necessary adjustments and/or repairs to processes and/or control equipment within 72 hours, so that visible emissions in the exhaust gases are eliminated; (3) Document in writing the results of the inspections, adjustments and/or repairs to the boiler; and (4) After 72 hours, if the required ad justments and/or repairs had not eliminated the visible emissions, perform Method 9 observations once daily for a 6-minute period until corre ctive actions have confirmed that visible emissions are below 20% opacity. [COMAR 26.11.03.06C]ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 61 of 70 B. The Permittee shall obtain a certification fr om the fuel supplier that the fuel oil is in compliance with the sulfur in fuel limitation. [COMAR 26.11.03.06C]

A and B. The Permittee shall only burn No. 2 fuel oil in each boiler unless the Permittee applies for and receives an approval or permit from the Department to burn
alternate fuels. [COMAR 26.11.02.09A] Record Keeping Requirements A1. The Permittee shall maintain an oper ation manual and preventive maintenance plan. [COMAR 26.11.03.06C] A2. The Permittee shall maintain the log of the visible emissions observations and the inspection and maintenance that rela tes to combustion performance for at least five (5) years and make it availabl e to the Department upon request. At a minimum, the most recent two years of data shall be retained on site. The remaining three years of data may be retained off site. The files may be maintained on microfilm, on a computer, on floppy disks, on magnetic tape, or
on microfiche. [COMAR 26.11.03.06C]

B. The Permittee shall maintain annual fuel s upplier certifications stating that the fuel is in compliance with this regulation for at least 5 years. [COMAR 26.11.03.06C] Reporting Requirements A. The Permittee shall report incidents of visible emissions in accordance with permit condition 4, Section III “Report of Excess Emissions and Deviations” [COMAR 26.11.03.06C]

B. The Permittee shall report the annua l fuel supplier certif ications to the Department upon request. [COMAR 26.11.09.07C] A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.

MACT Requirements (Applies to MACT Sources Only)

Applicable Standards and RegulationsESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 62 of 70 The Permittee shall comply with the following sections of the General Provisions. The provisions, which do not a pply, have been deleted.

Table 1 to Subpart LLL of Part 63—Applicability of General Provisions

General Provisions
40 CFR Citation Requirement Comment

63.1(a)(1) through (4) Applicability 63.1(a)(6) through (a)(8) Applicability 63.1(a)(10) through (14) Applicability 63.1(b)(2) and (3) Initial Applicability Determination 63.1(c)(1) Applicability after Standard
Established 63.1(c)(2) Permit Requirements Area Sources Must Obtain
Title V
Permits 63.1(c)(4) and (5) Extens ions, Notifications 63.1(e) Applicability of Permit Program
63.2 Definitions Additional Definitions in §63.1341 63.3(a) through (c) Units and Abbreviations 63.4(a)(1) through (a)(3) Prohibited Activities 63.4(a)(5) Compliance Date 63.4(b) and (c) Circumvention, Severability 63.5(a)(1) and (2) Construction/Reconstruction 63.5(b)(1) Compliance Dates 63.5(b)(3) through (6) Cons truction Approval. Applicability 63.5(d)(1) through (4) Approval of Construction/
Reconstruction 63.5(e) Approval of Construction/
Reconstruction 63.5(f)(1) and (2) Approval of Construction/
Reconstruction 63.6(a) Compliance for Standards and
Maintenance 63.6(b)(1) through (5) Compliance Dates 63.6(b)(7) Compliance Dates 63.6(c)(1) and (2) Compliance Dates 63.6(c)(5) Compliance Dates 63.6(e)(1) and (e)(2) Oper ation & Maintenance 63.6(e)(3) Start-up, Shut-Down and
MalfunctionESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 63 of 70 63.6(f)(1) through (3) Compliance with Emissions
Standards 63.6(g)(1) through (g)(3) A lternative Standard 63.6(h)(1) and (2) Opacity/VE Standards 63.6(h)(4) and (h)(5)(i) Op acity/VE Standards 63.6(h)(6) Opacity/VE Standards 63.6(h)(7) Opacity/VE Standards 63.6(i)(1) through (i)(14) Extension of Compliance 63.6(i)(16) Extension of Compliance 63.6(j) Exemption from Compliance 63.7(a)(1) through (a)(3) Performance Testing Requirements §63.1349 has specific requirements 63.7(b) Notification 63.7(c) Quality Assurance/Test Plan 63.7(d) Testing Facilities 63.7(e)(1) through (4) Conduct of Tests 63.7(f) Alternative Test Method 63.7(g) Data Analysis 63.7(h) Waiver of Tests 63.8(a)(1) Monitoring Requirements 63.9(a) Notification Requirements 63.9(b)(1) through (5) Initial Notifications 63.9(c) Request for Compliance Extension 63.9(d) New Source Notification for Special Compliance Requirements 63.9(e) Notification of Performance Test 63.9(f) Notification of VE/Opacity Te st Notification not required for VE/opacity test under §63.1350(e) and (j) 63.9(h)(1) through (h)(3) Notificat ion of Compliance Status 63.9(h)(5) and (h)(6) Notification of Compliance Status 63.9(i) Adjustment of Deadlines 63.9(j) Change in Previous Information 63.10(a) Record keeping/Reporting 63.10(b) General Requirements 63.10(d)(1) General Reporting Requirements 63.10(d)(2) Performance Test Results 63.10(d)(3) Opacity or VE Observations 63.10(d)(4) Progress Reports 63.10(d)(5) Start-up, Shutdown, Malfunction Reports 63.10(e)(1) and (e)(2) Additional CMS ReportsESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 64 of 70 63.10(e)(3) Excess Emissions and CMS Performance Reports Exceedances are defined in subpart LLL 63.10(f) Waiver for Record Keeping/ Reporting 63.12(a)-(c) State Authority and Delegations 63.13(a)-(c) State/Regi onal Addresses 63.14(a) and (b) Incorporation by Reference 63.15(a) and (b) Availability of Information

9. Facility Wide- MACT Sources Only 9 Emissions Unit Number(s) Facility Wide- MACT Sources Only Applicable Standards/Limits: 40 CFR §63.1350 which requires that the Permittee co mply with the written startup, shutdown, and malfunction plan that describes, in detail, procedures for operating and maintaining the source during periods of startup, shutdown, and malfunction; a program of corrective action for malfunctioning proces s; and air pollution control and monitoring equipment used to comply with the relevant standard. 40 CFR §63.6(e)(3)(viii) which st ates that the Permittee may periodically revise the startup, shutdown, and malfunction plan for the aff ected source as necessary to satisfy the requirements of this Part or to reflect change s in equipment or procedures at the affected
source. Unless the permitting authority provides ot herwise, the Permittee may make such revisions to the start-up, shutdown, a nd malfunction plan without prior approval by the Administrator or the permitting authorit y. However, each revision to a start-up, shutdown, and malfunction plan must be repo rted in the semiannual report required by §63.10(d)(5). If the start-up, shutdown, a nd malfunction plan fails to address or inadequately addresses an event that meets the characteristics of a malfunction but was not included in the start-up, shutdown, and ma lfunction plan at the time the Permittee developed the plan, the Permittee must re vise the start-up, s hutdown, and malfunction plan within 45 days after the event to incl ude detailed procedures for operating and maintaining the source during similar malf unction events and a program of corrective action for similar malfunctions of proce ss or air pollution control and monitoring equipment. In the event that the Permittee makes any revision to the start-up, shutdown, and malfunction plan which alters the scope of the activities at the source which are deemed to be a start-up, shutdown, and malfunction, or otherwise modifies the applicability of any emissions limit, work pr actice requirement, or other requirement in a standard established under this part, the revi sed plan shall not take effect until after the Permittee has provided a written notice describing the revision to the permitting authority. Testing Requirements - None Monitoring Requirements At all times, including periods of start-up, shutdown, and malfunction, the Permittee shallESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 65 of 70 operate and maintain any affected source, including associated air pollution control equipment and monitoring equipment, in a manner consistent with safety and good air pollution control practices for minimizing emissi ons to the levels requ ired by the relevant standards, i.e., meet the emissions standard or comply with th e start-up, shutdown, and malfunction plan. Malfunctions shall be corr ected as soon as practicable after their occurrence in accordance with the start-up, shutdown, and malfunction plan. To the extent that an unexpected event arises dur ing a start-up, shutdow n, and malfunction, the Permittee shall comply by minimizing emissi ons during such a start-up, shutdown, or malfunction event consistent with safety and good air polluti on control practices. [40 CFR §63.6] Record Keeping Requirements When actions taken by the Permittee duri ng a start-up, shutdown, or malfunction (including actions taken to co rrect a malfunction) are consis tent with the procedures specified in the affected source’s start-up, shutdown, and malfunction plan, the Permittee shall keep records for that event which demons trate the procedures specified in the plan were followed. These records may take the form of a “checklist”, or other effective form of record keeping that confirms conforman ce with the start-up, shutdown, and malfunctio n plan for that event. In a ddition, the Permittee shall keep records of these events as specified in § 63.10(b), including records of the occurr ence and duration of each start-up, shutdown, or malfunction of operation and each malfunction of the air pollution control and monitoring equipment. Furthermore, th e Permittee shall confirm that action taken during the relevant reporting period during periods of star t-up, shutdown, or malfunction
were consistent with the affected source’s st art-up, shutdown, and malfunction plan in the semiannual (or more frequent) start-up, shut down, and malfunction report required in §63.10(d)(5). If an action taken by the Permittee during a startup, shutdown, or malfunction (including an action taken to correct a malfunction) is not consistent with the procedures specified in the affected source’s startup, shutdown, and malfunction pla n, and the source exceeds the relevant emissions standard, then the Permitt ee shall record the actions taken for that event and shall report such actions within 2 working days after commencing actions inconsistent with the plan, followed by a letter within 7 working days after the end of the event, in accordance with §63.10(d)(5) (unle ss the Permittee makes alternative reporting arrangements , in advance, with the Administrator).
The Permittee shall maintain at the affect ed source a current startup, shutdown, and malfunction plan and shall make the plan available upon request for inspection and copying by the Administrator. In addition, if the startup, shutdown, and malfunction plan is subsequently revised, the Permittee shall ma intain at the affected source each previous (i.e., superseded) version of the startup, s hutdown, and malfunction plan, and must make each such previous version available for in spection and copying by the Administrator for a period of 5 years after revision of the plan. If at any time after adoption of a startup, shutdown, and malfunction plan the affected s ource ceases operation or is otherwise no longer subject to the provisions of this Part , the Permittee shall reta in a copy of the most recent plan for 5 years from the date the source ceases operation or is no longer subject toESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 66 of 70 this Part and shall make the plan availa ble upon request for inspection and copying by the
Administrator. [40 CFR §63.6] Reporting Requirements The Permittee shall, if actions taken are consis tent with the procedures specified in the start-up, shutdown, or malfunction plan, during a start-up, shut down, or malfunction of an affected source (including actions taken to correct a malfunction), state such information in a semiannual report. Reports shall only be required if a st art-up, shutdown, or malfunction occurred during the reporti ng period. The start-up, shutdown, and malfunction report may be submitted simultaneously with the excess emissions and continuous monitoring system performance reports. Any time an action taken by the Permittee dur ing a start-up, shut-down, or malfunction (including actions taken to corr ect a malfunction) is not consis tent with the procedures in the start-up, shut-down, or malfunction plan, the Permittee shall make an immediate repor t of the actions taken for that event within 2 working days, by telephone call or fax
transmission. The immediat e report shall be followed by a letter, certified by the Permittee explaining the circumstances of th e event, the reasons for not following the start-up, shut-down, or malfunction plan, a nd whether any excess emissions and/or parameter monitoring exceedances are believed to have occurred. [40 CFR §63.1354] A permit shield shall cover the applicable requirements of the Clean Air Act that are
listed in the table above.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 67 of 70 SECTION V INSIGNIFICANT ACTIVITIES

This section contains a list of the insignificant emissions uni ts that were reported in the Title V permit application. The applicable Cl ean Air Act requirements, if any, are listed below the insignificant activity.

(1) No.__2 __ Stationary internal combustion engines with less than 1,000 brake horsepower (746 kilowatts) opera ting less than 2000 hours, and any stationary internal combus tion engines with less than 500 brake horsepower (373 kilowatts).

(a) Emissions During Idle Mode (COMAR 26.11.09.05B(2)). The Permittee may not cause or permit the discharge of emissions from any engine, operating at idle, greater than 10 percent opacity.

(b) Emissions During Operating Mode (COMAR 26.11.0905b(3)). The Permittee may not cause or permit the discharge of emissions from any engine, operating at other than idle conditions greater than 40 percent opacity.

Exceptions:

(i) COMAR 26.11.09.5B(2) does not apply for a period of 2 consecutive minutes after a period of idling of 15 consecutive minutes for the purpose of clearing the exhaust system.

(ii) COMAR 26.11.09.5B(3) does not apply to emissions resulting directly from cold engine start-up and warm-up for the following maximum periods:

(1) Engines that are idled continuously when not in service: 30 minutes;

(2) All other engines: 15 minutes;

(iii) COMAR 26.11.09.05B(2) & (3) does not apply while maintenance, repair or testing is being performed by qualified
mechanics.

(2) No.__2 __ Unheated VOC dispensing containers or unheated VOC rinsing containers of 60 gallons ( 227 liters) capacity or less;ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 68 of 70 (a) The Permittee shall not use any VOC degreasing material that exceeds a vapor pressure of 1 mmHg at 20° Celsius (COMAR 26.11.19.09D(2)(b)).

(b) The Permittee shall implemen t good operating practices to minimize spills and evaporation of VOC degreasing material. These practices shall include covers (including water covers), lids, or other methods of mini mizing evaporative losses, and reducing the time and frequency during which parts are cleaned (COMAR 26311.19.09D(3)(a-d)).

(c) The Permittee shall not use a halogenated substance that is a VOC in any cold degreasing operations (COMAR 263.11.19.09D(3)(a-d)).

The Permittee shall maintain the fo llowing records of operating data at the sire for at least five (5) y ears and shall make available to the Department upon request:

(a) Monthly records of the total VOC degreasing material used (COMAR 26.11.19.09F); and

(b) The good operating practices established by COMAR 26.11.19.09D established in Writing and displayed so they are clearly visible to the operator at the facility (COMAR 26.11.19.09D(3)(a-d)).

Containers, reservoirs, or tanks used exclusively for:

(3) ___X ___ Storage of butane, propane, or liquefied petroleum, or natural gas;

(4) ___X ___ Storage of lubricating oils:

(a) constructed before July 23, 1984, or

(b) constructed after July 23, 19 84 and are less than 10,000 gals;

(5) ___X ___ Storage of lubricating oils greater than 10,000 gals. and constructed after July 23, 1984; (NOTE: tanks may have applicable requirements in 40 CFR Part 60)ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 69 of 70 (6) No.__5__ Storage of Numb ers 1, 2, 4, 5, and 6 fuel oil and aviation jet engine fuel;

(a) constructed before July 23, 1984, or

(a) constructed after July 23, 1984 and are less than 10,000 gals;

(7) No__3__ Storage of Numbers 1,2,4,5, and 6 fuel oil and aviation jet engine fuel greater than 10,000 gals. an d constructed after July 23, 1984; (NOTE: this condition has applicab le requirements in 40 CFR Part 60)

(8) ___1 ___ Storage of motor vehicle gasoline, having an individual tank capacity of 2,000 gallons or less;

(9) ___X ___ Emissions resulting from the us e of explosives for blasting at quarrying operations and from the requ ired disposal of boxes used to ship the explosive;

(10) ___X ___ Comfort air conditioning subject to requirements of title VI the Clean Air Act;

(11) ___X ___ Natural draft hoods or natural dr aft ventilators that exhaust air pollutants into the ambient air fr om manufacturing/industrial or commercial processes; and

(12) ___X ___ Laboratory fume hoods and vents.ESSROC CEMENT CORPORATION
FREDERICK CEMENT PLANT

4120 BUCKEYSTOWN PIKE,
FREDERICK MD 21717
PART 70 OPERATING PERMIT NO. 24-21-00013

Page 70 of 70 SECTION VI STATE ONLY ENFORCEABLE CONDITIONS

The Permittee is subject to the following state-only enforceable requirements:

A. Applicable Regulations (1) COMAR 26.11.06.08 which prohibits the opera tion or maintenance of an installation or premises in such a manner that a nuisance or air pollution is
created. (2) COMAR 26.11.06.09 which prohibits the discharge into the atmosphere of gases, va pors, or odors beyond th e property line in such
a manner that a nuisance or ai r pollution is created. (3) COMAR 26.11.06.10 , which contains the requirements for burning
used oil or waste combustible fluids. (4) COMAR 26.11.15.05 , which requires that the Permittee implement “Best Available Control Technology for Toxics” (T – BACT) to
control emissions of t oxic air pollutants. (5) COMAR 26.11.15.06 , which prohibits the discharge of toxic air pollutants to the extent that su ch emissions will unreasonably endanger human health. (6) COMAR 26.11.01.11B(7) , a person is required by this regulation or Regulation .10 of this chapter to install a CEM shall install data telemetry for all required CEMs. Th is system shall be designed and installed in accordance with specifications approved by the Department. The system shall be operational by the date specified in Regulation .10D(1) of this chapter.”

B. Compliance Demonstration The Permittee shall submit to the Department, by April 1 of each year during the term of this permit, a written certification of the results of an analysis of emissions of toxic air pollutants from the Permittee’ s facility during th e previous calendar year. The analysis shall include either: (1) a statement that previously submitted compliance demonstrations for emissions of toxic air pollutants remain valid, or (2) a revised compliance demonstration, developed in accordance with requirements included under COMAR 26.11.15 & 16, that accounts for changes in operations, analytical methods, emissions determinations, or
other circumstances that have inva lidated previous demonstrations.