SACRAMENTO METROPOLITAN AIR QUALITY MANAGEMENT DISTRICT

RULE 405 - DUST AND CONDENSED FUMES
(Adopted 8-1-62; Amended 6-1-76, 8-3-77)


INDEX

100 GENERAL

200 DEFINITIONS

300 STANDARDS

400 ADMINISTRATIVE REQUIREMENTS (NOT INCLUDED)

500 MONITORING AND RECORDS (NOT INCLUDED)


100 GENERAL

101 PURPOSE: To limit the discharge of dust and condensed fumes into the atmosphere by establishing emission rates based on process weight.

200 DEFINITIONS

201 DUSTS: Minute solid particles released into the atmosphere by natural forces or by mechanical processes such as crushing, grinding, milling, drilling, demolishing, shoveling, conveying, covering, bagging, sweeping, etc.

202 CONDENSED FUMES: Minute solid particles generated by the condensation of vapors from solid matter after volatilization from the molten state, or may be generated by sublimation, distillation, calcination, or chemical reaction, when these processes create airborne particles.

203 PROCESS WEIGHT PER HOUR: The total weight of all materials introduced into any specific process which process may cause any discharge into the atmosphere. Solid fuels charged will be considered as part of the process weight, but liquid and gaseous fuels and combustion air will not. 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 equipment handling such process is idle.

300 STANDARDS

301 LIMITATIONS: A person shall not discharge into the atmosphere in any one hour from any source whatsoever dust or condensed fumes in total quantities in excess of the amount shown in the following table:

To use the following table, take the process weight per hour as such is defined below. Then find this figure on the table, opposite which is the maximum number of kilograms or pounds of contaminants which may be discharged into the atmosphere in any one hour. As an example, if "A" has a process which emits contaminant into the atmosphere and which process takes 3 hours to complete, he will divide the weight of all materials in the specific process, in this example, 7500, by 3, giving a process weight per hour of 2500 kg. The table shows that "A" may not discharge more than 3.13 kg in any hour during the process. Where the process weight per hour falls between figures in the left hand column, the exact weight or permitted discharge may be interpolated.

TABLE FOR PROCESS WEIGHT AND ALLOWABLE DISCHARGE

Process weight per hour

 

Maximum discharge rate allowed for the solid particulate matter (aggregate discharged from all points of discharge)

 

Process weight per hour

 

Maximum discharge rate allowed for the solid particulate matter (aggregate discharged from all points of discharge)

kg/hrlb/hr

 

kg/hrlb/hr

 

kg/hrlb/hr

 

kg/hrlb/hr

114250

 

.451.00

 

36368000

 

3.95 8.70

136300

 

.511.12

 

38648500

 

4.119.04

159350

 

.561.23

 

40919000

 

4.259.36

182400

 

.611.34

 

43189500

 

4.40 9.67

205450

 

.651.44

 

454510000

 

4.5510.0

227500

 

.701.54

 

545512000

 

4.7310.4

273600

 

.791.73

 

636414000

 

4.9110.8

318700

 

.861.90

 

727316000

 

5.0911.2

364800

 

.942.07

 

818218000

 

5.2311.5

409900

 

1.012.22

 

909120000

 

5.3611.8

4551000

 

1.082.38

 

1363630000

 

5.9113.0

5451200

 

1.212.66

 

1818240000

 

6.3213.9

6361400

 

1.332.93

 

2272750000

 

6.6814.7

7271600

 

1.453.19

 

2727360000

 

6.9515.3

8181800

 

1.563.43

 

3181870000

 

7.2315.9

9092000

 

1.663.66

 

3636480000

 

7.4516.4

11362500

 

1.914.21

 

4090990000

 

7.6816.9

13643000

 

2.154.72

 

45455100000

 

7.8617.3

15913500

 

2.365.19

 

90909200000

 

9.2720.4

18184000

 

2.565.64

 

136634300000

 

10.2322.5

20454500

 

2.766.07

 

181818400000

 

10.9524.1

22735000

 

2.956.49

 

227273500000

 

11.5525.4

25005500

 

3.136.89

 

272727600000

 

12.0926.6

27276000

 

3.307.27

 

318182700000

 

12.5527.6

29556500

 

3.477.64

 

363636800000

 

12.9128.4

31827000

 

3.648.00

 

409091900000

 

13.3229.3

34097500

 

3.808.36

 

4545451000000

or moreor more

 

13.6430.0