STATE OF RHODE ISLAND AND PROVIDENCE PLANTATIONS 

DEPARTMENT OF ENVIRONMENTAL MANAGEMENT 

OFFICE OF AIR RESOURCES 

AIR POLLUTION CONTROL REGULATION NO. 3 

PARTICULATE EMISSIONS FROM INDUSTRIAL PROCESSES 

Effective 2 August 1967 

Last Amended 19 July 2007 

AUTHORITY: These regulations are authorized pursuant to R.I. Gen. Laws § 42-

17. l-2(s) and 23-23, as amended, and have been promulgated pursuant to the 

procedures set forth in the R.l. Administrative Procedures Act, R.l. Gen. Laws Chapter 

42-35. 
RHODE ISLAND DEPARTMENT OF ENVIRONMENTAL MANAGEMENT 

_OFFICE OF AIR RESOURCES 

AIR POLLUTION CONTROL REGULATION NO. 3 

PARTICULATE EMISSIONS FROM INDUSTRIAL PROCESSES 

3 .1 Definitions 

Unless otherwise expressly defined in this section, the terms used in this regulation shall be 

defined by reference to the Rhode Island Air Pollution Control Genera] Definitions 

Regulation. As used in this regulation, the following tenns shal1, where the context permits, 

be construed as follows: 

3.1.l "Process weight" means the total weight of all materials introduced into any 

specific process, except liquid and gaseous fuels and combustion air, which may 

cause any emissions of particulate matter into the atmosphere. 

3.2 Limitations 

No person shall emit into the atmosphere in any one hour from any source, except those 

specific types of sources to which emission standards elsewhere in these rules and regulations 

apply, particulate matter in excess of that shown in the following table opposite the applicable 

process weight. In entering the table "the process weight rate" wi11 be detennined by dividing 

the total process weight by the number of hours in one complete operation, excluding anytime 

during which the equipment is not operating. 

3.3 Determination of Compliance 

Compliance with Section 3.2 shall be determined by one of the following procedures: 

(a) Emission testing conducted by the owner or operator of the source according to Method 5 

of Appendix A to Part 60 of Title 40 of the Code of Federal Regulations, or by aeother 

method 'Nhieh has the prior approval of or is required by the Director. 

(b) Technical evaluation based on such factors which may include the potential of the industrial 

process for emitting particulates; design of the process, equipment or facility; design 

efficiency of air pollution control systems; and emission test results on similar processes, 

equipment or facilities. 

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3.4 General Provisions 

3.4.l Purpose 

The purpose of this regulation is to limit particulate emissions from 

industrial sources. 

3.4.2 Authority 

These regulations are authorized pursuant to R.l. Gen. Laws § 42-l 7. l2(s) and 23-23, as amended, and have been promulgated pursuant to the 

procedures set forth in the R.I. Administrative Procedures Act, R.I. Gen. 

Laws Chapter 42-35 

3.4.3 Applieation 

The terms a-ad provisions of this FegalatioB shall be liberally eoe:stn1ed to 

permit the Department to effectuate the purposes of state law, goals and 

f)Olicies. 

3.4.4 Severability 

If any provision of this regulation or the application thereof to any person 

or circumstance, is held invalid by a court of competent jurisdiction, the 

validity of the remainder of the regulation shall not be affected thereby. 

3.4.5 Effective Date 

The foregoing regulation, "Particulate Emissions from Industrial 

Processes", as amended, after due notice, is hereby adopted and filed with 

the Secretary of State this 29th day of__,,J __ un=----e __ _ 

20QZ_ to become effective twenty (20) days thereafter, in accordance 

with the provisions of Chapters 23-23, 42-35, 42-17 .1, 42-17 .6, of the 

General Laws of Rhode Island of 1956, as amended. 

Page 2 of 4 
W. Michael Sullivan, PhD., Director 

Department of Environmental Management 

Notice Given on: February 21, 2007 

Public Hearing held: March 23, 2007 

Filing Date: June 29, 2007 

Effective Date: July 19, 2007 

Page 3 of 4 
TABLE 

Process Weight Rate Rate of Process Weight Rate of 

Emission Rate Emission 

Lb/Hr Tons/Hr Lb/Hr Lb/Hr Tons/Hr Lb/Hr 

100 0.05 0.551 16,000 8.00 16.5 

200 0.10 0.877 18,000 9.00 17.9 

400 0.20 1.40 20,000 10.00 19.2 

600 0.30 1.83 30,000 15.00 25.2 

800 0.40 2.22 40,000 20.00 30.5 

1,000 0.50 2.58 50,000 25.00 35.4 

1,500 0.75 3.38 60,000 30.00 40.0 

2,000 1.00 4.10 70,000 35.00 41.3 

2,500 1.25 4.76 80,000 40.00 42.5 

3,000 1.50 5.38 90,000 45.00 43.6 

3,500 1.75 5.96 100,000 50.00 44.6 

4,000 2.00 6.52 120,000 60.00 46.3 

5,000 2.50 7.58 140,000 70.00 47.8 

6,000 3.00 8.56 160,000 80.00 49.0 

7,000 3.50 9.49 200,000 100.00 51.2 

8,000 4.00 10.40 1,000,000 500.00 69.0 

9,000 4.50 11.20 2,000,000 1,000.00 77.6 

10,000 5.00 12.0 6,000,000 3,000.00 92.7 

12,000 6.00 13.6 

Interpolation of the data in this table for the process weight rates up to 60,000 Lb/Hr shall be 

accomplished by use of the equation: E = 4.10 P0

·

67, and interpolation and extrapolation of the 

data for process weight rates in excess of 60,000 Lb/Hr shall be accomplished by the equation: 

E = 55.0 P0

·

11 - 40, where E = rate of emission in Lb/Hr and P =process weight rate in Tons/Hr. 

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