S.C. Code Regs. § § 61-62.1.III

Current through Register Vol. 48, No. 10, October 25, 2024

Section 61-62.1.III - EMISSIONS INVENTORY AND EMISSIONS STATEMENTS

(A) General

(1) An emissions inventory is a study or compilation of pollutant emissions. The purposes of emissions inventories are to locate air pollution sources, to define the type and size of sources, to define the type and amount of emissions from each source, to determine pollutant frequency and duration, to determine the relative contributions to air pollution from classes of sources and of individual sources, to provide a basis for air permit fees, and to determine the adequacy of regulations and standards. The requirements of this section notwithstanding, an emissions inventory may be required from any source at any time.

(2) An emissions statement is a less detailed statement which focuses on emissions estimates for pollutants associated with a nonattainment designation.

(B) Emissions Inventory Reporting Requirements

(1) Beginning with the effective date of this regulation, sources must submit an emissions inventory for the previous calendar year by March 31 at a frequency as outlined below:

(a) Type A Sources are Title V Sources with annual emissions greater than or equal to any of the emission thresholds listed for Type A Sources in Table 1 below. Type A Sources must submit an emissions inventory every year.

Table 1 - Minimum Point Source Reporting Thresholds by Pollutant (tons per year)

Pollutants	Type A Sources: Annual Cycle	Potential¹or Actual²
SO_X	>=2500	Potential
VOC	>=250	Potential
NO_X	>=2500	Potential
CO	>=2500	Potential
Pb	>=0.502	Actual
PM₁₀	>=250	Potential
PM2.5	>=250	Potential
NH₃	>=250	Potential

¹ Tons per year (tpy) potential to emit means the maximum capacity of a stationary source to emit any air pollutant under its physical and operational design. Any physical or operational limitation on the capacity of a source to emit an air pollutant, including air pollution control equipment and restrictions on hours of operation or on the type or amount of material combusted, stored, or processed, will be treated as part of its design if the limitation is enforceable by the Administrator and included in the source's permit prior to the end of the reporting year.

² The EPA considers that the ambient monitoring rule threshold is 0.5 tons of actual emissions; therefore, this criterion is based on actual emissions rather than the potential-to-emit approach taken for other criteria pollutant and precursor thresholds.

(b) All other Title V Sources with annual emissions less than the emission thresholds listed for Type A Sources in Table 1 above must submit emissions inventories every three (3) years beginning with calendar year 2014 data.

(c) Nonattainment area (NAA) Sources are sources located in a NAA with annual emissions during any year of the three (3) year cycle greater than or equal to any of the emission thresholds listed for NAA Sources in Table 2 below. These sources that are not also Type A Sources must submit emissions inventories every three (3) years beginning with calendar year 2014 data.

Table 2 - Minimum Point Source Reporting Thresholds by Pollutant (tons per year)

Pollutant	NAA³ Sources: Three-year Cycle	Potential¹ or Actual²
SO_X	>=100	Potential
VOC	>=100 (moderate O₃NAA)	Potential
	>=50 (serious O3 NAA)
	>=25 (severe O3 NAA)
	>=10 (extreme O₃NAA)
NOx	>=100 (all O₃NAA)	Potential
CO	>=100 (all O3 NAA)	Potential
CO	>=100 (all CO NAA)	Potential
Pb	>=0.50	Actual
PM₁₀	>=100 (moderate PM₁₀ NAA)	Potential
PM₁₀	>=70 (serious PM10 NAA)	Potential
PM2.5	>=100	Potential
NH₃	>=100	Potential

³ Special point source reporting thresholds apply for certain pollutants by type of NAA. The pollutants by nonattainment area are:

Ozone: VOC, NO_X, and CO;

Carbon Monoxide: CO; and

Particulate matter less than 10 microns: PM₁₀.

(2) Other Requirements

(a) Unless otherwise indicated, all emissions inventories must be submitted to the Department by March 31 following the year of inventory. All applicable information must be recorded in the current format for reporting emissions data provided by the Department.

(b) All newly permitted and constructed Title V Sources which have obtained or are in the process of obtaining a Title V permit and all newly permitted and constructed NAA Sources must complete and submit to the Department an initial emissions inventory for the source's first partial calendar year of operation and an emissions inventory for the source's first full calendar year of operation.

(i) The partial year emissions inventory must be submitted to the Department no later than March 31 of the year following the source's partial year of operation and must include an emissions inventory from the source's operation start date through December 31 of the same year.

(ii) The first full calendar year emissions inventory must be submitted to the Department by March 31 of the year following the source's first calendar year of operation.

(iii) Sources must submit future emissions inventories on the schedule as described in paragraph (B)(1)(a), paragraph (B)(1)(b), and paragraph (B)(1)(c) of this section.

(c) Any existing sources that are determined by the Department to be subject to Regulation 61-62.70, Title V Operating Permit Program, and/or NAA Sources must complete and submit to the Department an emissions inventory for the previous calendar year within ninety (90) days. These sources must then submit future emissions inventories on the schedule as described in paragraph (B)(1)(a), paragraph (B)(1)(b), and paragraph (B)(1)(c) of this section.

(d) Submittal of emissions inventories outside of the schedules in this section will be accepted and reviewed only if a modification has occurred that required issuance of an air quality permit since the last emissions inventory submittal by the source. This modification must alter the quantity or character of the source's emissions. These sources may submit a new emissions inventory following the first full calendar year of operation after the modification. These sources must then submit future emissions inventories on the schedule described in paragraph (B)(1)(a), paragraph (B)(1)(b), and paragraph (B)(1)(c) of this section.

(e) Information required in an emissions inventory submittal to the Department must include the following:

(i) Information on fuel burning equipment;

(ii) Types and quantities of fuel used;

(iii) Fuel analysis;

(iv) Exhaust parameters;

(v) Control equipment information;

(vi) Raw process materials and quantities used;

(vii) Design, normal, and actual process rates;

(viii) Hours of operation;

(ix) Significant emission generating points or processes as discussed in the current format for reporting emissions data provided by the Department;

(x) Any desired information listed in 40 CFR Part 51 Subpart A (December 17, 2008) that is requested by the Department;

(xi) Emissions data from all regulated pollutants; and

(xii) Any additional information reasonably related to determining if emissions from an air source are causing standards of air quality to be exceeded.

(f) A source may submit a written request to the Department for approval of an alternate method for estimating emissions outside of those methods prescribed by the Department. Such requests will be reviewed by the Department's emissions inventory staff on a case-by-case basis to determine if the alternate method better characterizes actual emissions for the reporting period than the Department's prescribed methods.

(g) Emission estimates from insignificant activities listed on a source's permit are required only in the initial emissions inventory submitted by the source. If emissions from these insignificant activities have not been included in a past emissions inventory submitted to the Department, the source must include these emissions in their next required emissions inventory submittal.

(h) Copies of all records and reports relating to emissions inventories as required in this section must be retained by the owner/operator at the source for a minimum of five (5) years.

(C) Emissions Statement Requirements

(1) Sources in areas designated nonattainment for an ozone National Ambient Air Quality Standard (NAAQS) must submit to the Department by March 31 for the previous calendar year an emissions statement which includes emissions estimates for both VOCs and nitrogen oxides (NO_X) beginning with the effective date of this regulation.

(2) The statement must contain a certification that the information contained in the statement is accurate to the best knowledge of the individual certifying the statement.

(3) All applicable information must be recorded in the current format for reporting emissions data provided by the Department.

(4) Copies of all records and reports relating to emissions statements as required in this section must be retained by the owner or operator at the source for a minimum of five (5) years.

S.C. Code Regs. § 61-62.1.III

Amended by State Register Volume 36, Issue No. 1, eff January 27, 2012 (errata); State Register Volume 36, Issue No. 9, eff September 28, 2012 (errata); State Register Volume 38, Issue No. 6, eff 6/27/2014; State Register Volume 40, Issue No. 09, eff. 9/23/2016; State Register Volume 44, Issue No. 04, eff. 4/24/2020.