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SOUTH CAROLINA

DEPARTMENT OF HEALTH AND ENVIRONMENTAL CONTROL

AIR POLLUTION CONTROL REGULATIONS AND STANDARDS

REGULATION 61-62.99

 NITROGEN OXIDES (NOX) BUDGET PROGRAM REQUIREMENTS FOR

STATIONARY SOURCES NOT IN THE TRADING PROGRAM

SUBPART A - (Reserved)

SUBPART B - EMISSIONS OF NITROGEN OXIDES FROM CEMENT MANUFACTURING

Section 99.41 - Applicability.

The requirements of this subpart apply only to kilns with process rates of at least the following: long 

dry kilns-12 tons per hour (TPH); long wet kilns - 10 TPH; preheater kilns - 16 TPH; precalciner and 

preheater/precalciner kilns - 22 TPH and/or have NOX emissions greater than 1 ton per day.

Section 99.42 - Definitions.

(a) “Alternative control technique” means a control technique that may include but not be limited to the 

following:

(1) an add-on control device that achieves the same reductions as low- NOX burners or mid-kiln firing, 

or

(2) an operational control technique such as NOX emission rates (which may be seasonal limitations

and may be facility-wide or unit specific), operational limits, or other means of compliance as approved 

by the Department and EPA. Any owner or operator of a unit subject to this rule that chooses to comply 

with this regulation through the use of an operational control technique shall submit a compliance

monitoring plan for review and approval by the Department and EPA. Unless otherwise authorized by the 

Department and EPA, this monitoring plan must demonstrate that the operational control technique

achieves at least a thirty percent reduction in NOX emissions from uncontrolled levels. The owner or

operator may request that the Department and EPA approve a rate of NOX emission reductions less than 

thirty percent. If the Department and EPA concur that the proposed reduction rate is appropriate, the

Department and EPA may authorize a reduction rate lower than thirty percent.

(b) “Clinker” means the product of a Portland cement kiln from which finished cement is manufactured 

by milling and grinding. 

(c) “Long dry kiln” means a kiln which employs no preheating of the feed. The inlet feed to the kiln is 

dry.

(d) “Long wet kiln” means a kiln which employs no preheating of the feed. The inlet feed to the kiln is a 

slurry.

(e) “Low-NOX burners” means combustion equipment designed to reduce flame turbulence, delay fuel/air 

mixing, and establish fuel-rich zones for initial combustion.
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(f) “Malfunction” means any sudden, infrequent, and not reasonably preventable failure of air pollution 

control equipment, process equipment, or a process to operate in a normal or usual manner. Failures that 

are caused in part by poor maintenance or careless operation are not malfunctions.

(g) “Mid-kiln firing” means the secondary firing in kilns by injecting solid fuel at an intermediate point in 

the kiln using a specially designed feed injection mechanism for the purpose of decreasing NOX emissions 

through (1) burning part of the fuel at a lower temperature and (2) reducing conditions at the solid waste 

injection point that may destroy some of the NOX formed upstream in the kiln burning zone.

(h) “Portland cement” means a hydraulic cement produced by pulverizing clinker consisting essentially of 

hydraulic calcium silicates, usually containing one or more of the forms of calcium sulfate as an

interground addition.

(i) “Portland cement kiln” means a system, including any solid, gaseous or liquid fuel combustion

equipment, used to calcine and fuse raw materials, including limestone and clay, to produce Portland

cement clinker.

(j) “Precalciner kiln” means a kiln where the feed to the kiln system is preheated in cyclone chambers and 

utilize a second burner to calcine material in a separate vessel attached to the preheater prior to the final 

fusion in a kiln which forms clinker. 

(k) “Preheater kiln” means a kiln where the feed to the kiln system is preheated in cyclone chambers prior 

to the final fusion in a kiln which forms clinker.

(l) “Shutdown” means the cessation of operation of a Portland cement kiln for any purpose.

(m) “Startup” means the setting in operation of a Portland cement kiln for any purpose.

Section 99.43 - Standard Requirements.

(a) For the control period that begins on May 31, 2004, an owner or operator of any Portland cement kiln 

subject to this rule shall not operate the kiln during May 31 through September 30 unless the kiln has

installed and operates during May 31 to September 30 with low- NOX burners, mid-kiln firing, or

alternative control techniques, as defined under section 99.42(a). In all subsequent control periods, an

owner or operator of any Portland cement kiln subject to this rule shall not operate the kiln during May 1 

through September 30 unless the kiln has installed and operates during May 1 to September 30 with lowNOX burners, mid-kiln firing, or alternative control techniques, as defined under section 99.42(a).

Section 99.44 - Reporting, Monitoring and Recordkeeping.

(a) Reporting requirements. Any owner or operator subject to the requirements of Section 99.43 shall

comply with the following requirements:

(1) By May 31, 2004, submit to the Department the identification number and type of each unit subject 

to the section, the name and address of the plant where the unit is located, and the name and telephone 

number of the person responsible for demonstrating compliance with the section.

(2) Submit a report to the Department by October 31 of each year documenting for that unit the total 

NOX emissions. For the control period that starts on May 31, 2004, the report shall document the total 

emissions from May 31 through September 30. For all subsequent control periods, the report shall

document the total NOX emissions from May 1 through September 30.
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(b) Monitoring Requirements.

(1) Any owner or operator of a unit subject to this rule shall complete an initial performance test and 

subsequent annual testing consistent with the requirements of 40 CFR part 60, Appendix A, Method 7,

7A, 7C, 7D, or 7E. 

(2) Alternatively, the owner or operator can also comply with this subsection by the continuous

monitoring of a process parameter that the owner/operator has demonstrated to the Department and EPA 

is related to NOX emissions.

(3) Any owner or operator of a unit subject to this rule that chooses to comply with this regulation

through the use of an operational control technique shall submit a compliance monitoring plan pursuant to 

section 99.42(a).

(c) Recordkeeping Requirements. Any owner or operator of a unit subject to this rule shall produce and 

maintain records which shall include, but are not limited to:

(1) The emissions, in pounds of NOX per ton of clinker produced from each affected Portland cement 

kiln.

(2) The date, time and duration of any startup, shutdown or malfunction in the operation of any of the 

cement kilns or the emissions monitoring equipment.

(3) The results of any performance testing.

(4) Daily cement kiln production records.

(5) All records required to be produced or maintained shall be retained on site for a minimum of 2

years and be made available to the EPA or State or local agency upon request. 

Section 99.45 - Exemptions.

The requirements of Section 99.43, Section 99.44, and Section 99.45 shall not apply to the following 

periods of operation:

(a) Start-up and shut-down periods and periods of malfunction, not to exceed 36 consecutive hours;

(b) Regularly scheduled maintenance activities.

R. 61-62.99 History - South Carolina State Register: 

Vol. 26, Issue No. 5, (Doc. No. 2593), May 24, 2002;