eLaws | eCases | Connecticut General Statutes | Regulations of Connecticut State Agencies | Connecticut Courts | Counties & Cities of Connecticut | Code of Federal Regulations | United States Code |
 Norwalk
 Code of Ordinances
 Ordinances
 Chapter 11. Air Pollution

  § 11-10. Control of industrial processes and operations.  

Latest version.
  • A. 
    The maximum allowable emission of particulate matter from any source whatever, except fuel-burning and refuse-burning equipment, shall be determined from Table 1.
    (1) 
    This section applies to any operation, process or activity from which particulate matter is emitted, except:
    (a) 
    The burning of fuel for indirect heating in which the products of combustion do not come into direct contact with process materials;
    (b) 
    The burning of refuse.
    (2) 
    For purposes of this § 11-10, particulate matter is any material, except uncombined water, that exists in a finely divided form as a liquid or solid at standard conditions.
    (3) 
    Process weight per hour is the total weight of all materials introduced into any process that may cause any discharge of particulate matter. Solid fuels charged will be considered as part of the process weight, but liquid and gaseous fuels and combustion air will not. For a cyclical or batch operation, the process weight per hour will be derived by dividing the total process weight by the number of hours in one complete operation from the beginning of any given process to the completion thereof, excluding any time during which the equipment is idle. For a continuous operation, the process weight per hour will be derived by dividing the process weight for a typical period of time.
    (4) 
    Emission tests relating to this section shall be made following the standards in the American Society of Mechanical Engineers "Power Test Codes 11-PTC-27," dated 1957 and entitled "Determining Dust Concentration in a Gas Stream."
    TABLE 1
    ALLOWABLE RATE OF EMISSION BASED ON PROCESS WEIGHT RATE*
    Process Weight Rate
    Rate of Emission
    Lb/Hr
    Tons/Hr
    Lb/Hr
    100
    0.05
    0.551
    200
    0.10
    0.877
    400
    0.20
    1.40
    600
    0.30
    1.83
    *Interpolation of the data in this table for process weight rates up 60,000 lb/hr shall be accomplished by use of the equation E=4.10 P, and interpolation and extrapolation of the data for process weight rates in excess of 60,000 lb/hr shall be accomplished by use of the equation E=55.0 P — 40, where E = rate of emission in lb/hr and P = process weight rate in tons/hr.
    Process Weight Rate
    Rate of Emission
    Lb/Hr
    Tons/Hr
    Lb/Hr
    800
    0.40
    2.22
    1,000
    0.50
    2.58
    1,500
    0.75
    3.38
    2,000
    1.00
    4.10
    2,500
    1.25
    4.76
    3,000
    1.50
    5.38
    3,500
    1.75
    5.96
    4,000
    2.00
    6.52
    5,000
    2.50
    7.58
    6,000
    3.00
    8.56
    7,000
    3.50
    9.49
    8,000
    4.00
    10.4
    9,000
    4.50
    11.2
    10,000
    5.00
    12.0
    12,000
    6.00
    13.6
    16,000
    8.00
    16.5
    18,000
    9.00
    17.9
    20,000
    10.
    19.2
    30,000
    15.
    25.2
    40,000
    20.
    30.5
    50,000
    25.
    35.4
    60,000
    30.
    40.0
    70,000
    35.
    41.3
    80,000
    40.
    42.5
    90,000
    45.
    43.6
    100,000
    50.
    44.6
    120,000
    60.
    46.3
    140,000
    70.
    47.8
    160,000
    80.
    49.0
    200,000
    100.
    51.2
    1,000,000
    500.
    69.0
    2,000,000
    1,000.
    77.6
    6,000,000
    3,000.
    92.7
    For gases, the following standards shall apply. The Board of Health shall determine the class of any particular gas.
    Class
    Gases*
    A
    Nickel carbonyl
    B
    Phosphine
    C
    Acrolein, bromine, fluorine
    D
    Chlorine, HCHO, HCL, SO2
    E
    Alkyl alcohol, HB, HCN, NO2, H2S
    F
    Acetic acid, NH3, methyl acrylate
    *Examples only. Not all-inclusive.