Administrative Code

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Virginia Administrative Code
Title 9. Environment
Agency 5. State Air Pollution Control Board
Chapter 40. Existing Stationary Sources

9VAC5-40-1540. Standard for particulate matter.

A. No owner or other person shall cause or permit to be discharged into the atmosphere from any chemical fertilizer manufacturing operation, which utilizes recycle and physically connected dissimilar processes as a part of the manufacturing operation, any particulate emissions in excess of the limits in Table 4-12.

TABLE 4-12

Process Weight Rate

Maximum Allowable Emission Rate

15 or less














B. Except as provided in subsections C and D of this section, interpretation of the emission standard in subsection A of this section shall be in accordance with 9VAC5-40-22.

C. The process weight rate entry to be used in Table 4-12 for chemical fertilizer manufacturing operations shall be considered as the production rate, or for chemical fertilizer manufacturing operations involving physically connected dissimilar process operations shall be the sum of the process weight rates of each of the dissimilar process operations. The materials handling and screening equipment shall not be considered as a part of the process operation for the determination of process weight rate. For a process weight rate between any two consecutive rates stated in Table 4-14 maximum allowable emissions of particulate matter shall be calculated by the following equation:

1. For process weight rates up to 45 tons per hour:

E = 4.10 (





E = emission rate in lb/hr.

P = process weight rate in tons/hr.

2. For process weight rates over 45 tons per hour:

E = 55.0 (


) - 40



E = emission rate in lb/hr.

P = process weight rate in tons/hr

D. When one manufacturing operation, or combination of physically connected process operations, is vented through separate stacks, the allowable emission rate for each stack shall be such that the sum of the emission rates for all of the stacks from that operation is equal to the allowable rates from that operation vented through a single stack.

E. For purpose of emission testing, samples taken of separate stacks within a three-day period, on the same fertilizer grade, shall be considered as simultaneous for the purpose of determining total operation emissions.

Statutory Authority

§§ 10.1-1307 and 10.1-1308 of the Code of Virginia.

Historical Notes

Derived from VR120-04-1203, eff. January 1, 1985.

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