TUOLUMNE COUNTY AIR POLLUTION CONTROL DISTRICT

RULE 413 - ATTAINMENT POLLUTANT INCREMENTS

The Air Pollution Control Officer shall deny an Authority to Construct for a proposed facility or modification which, pursuant to an analysis performed in accordance with the provisions of Rules 408 and 415, causes an ambient pollutant concentration to exceed the following increments of increase above the baseline concentration:





Pollutant: Monitoring Interval

Maximum Allowable Increase

(micrograms per cubic meter)

 

Class I

Class II

Class III

Particulate Matter: Annual Geometric Mean

24-hour Maximum

5

10

19

27

37

75

Sulfur Dioxide: Annual Geometric Mean

24-hour Maximum

3-hour Maximum

2

5

25

20

91

512

40

182

700

Ozone: 1-hour Maximum

20

40

80

Oxides of Nitrogen: Annual Average

10

20

40

Hydrocarbons (corrected for methane):

3-hour Maximum



20



40



80

Lead: Calendar Quarter Average

0.15

0.3

0.6

For any monitoring period other than an annual period, the applicable maximum allowable increase may be exceeded during one such monitoring period per year at any one location.