VENTURA COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 52 - PARTICULATE MATTER-CONCENTRATION (GRAIN LOADING)
(Adopted 7/2/68, Revised and Renumbered 10/22/68, Revised 5/23/72)

A person shall not discharge into the atmosphere from any source particulate matter in excess of the concentration shown in the following table (see Rule 52 Table).

Where the volume discharged falls between figures listed in the Table, the exact concentration permitted to be discharged shall be determined by linear interpolation.

The provisions of this Rule shall not apply to emissions resulting from the combustion of liquid or gaseous fuels in steam generators or gas turbines.

For the purposes of this Rule "particulate matter" includes any material which would become particulate matter if cooled to standard conditions.

CONCENTRATION

(Grain Loading)
TABLE FOR RULE 52

VOLUME DISCHARGED

Cubic Feet Per Minute Calculated at Standard Conditions

MAXIMUM CONCENTRATION OF PARTICULATE MATTER ALLOWED IN DISCHARGED GAS
Grains Per Cubic Foot of Dry Gas at Standard Conditions

VOLUME DISCHARGED

Cubic Feet Per Minute Calculated at Standard Conditions

MAXIMUM CONCENTRATION OF PARTICULATE MATTER ALLOWED IN DISCHARGED GAS
Grains Per Cubic Foot of Dry Gas at Standard Conditions

DCFM

GR/DCF

DCFM

GR/DCF

1,000 or less

0.2000

20,000

0.0635

1,200

0.1870

30,000

0.0544

1,400

0.1760

40,000

0.0487

1,600

0.1670

50,000

0.0447

1,800

0.1600

60,000

0.0417

2,000

0.1530

70,000

0.0393

2,500

0.1410

80,000

0.0374

3,000

0.1310

100,000

0.0343

3,500

0.1240

200,000

0.0263

4,000

0.1180

400,000

0.0202

5,000

0.1080

600,000

0.0173

6,000

0.1010

800,000

0.0155

7,000

0.0949

1,000,000

0.0142

8,000

0.0902

1,500,000

0.0122

10,000

0.0828

2,000,000

0.0109

15,000

0.0709

2,500,000
or more

0.0100