Tenn. Comp. R. & Regs. 1200-03-07-.02 - CHOICE OF PARTICULATE EMISSION STANDARDS - EXISTING PROCESS

(1) For any process emission source operating within the State of Tennessee, which was in operation or under construction prior to August 9, 1969, the allowable emission standard shall be obtained from either the diffusion equations presented in 1200-03-07-.02(3) below or the process weight table presented in 1200-03-07-.02(4) below. The owner or operator of such a process emission source shall make known, in writing, to the Technical Secretary by July 1, 1972, his choice of emission standard. If no choice is so indicated, the Technical Secretary shall designate the emission standard of 1200-03-07-.02(4) below as the applicable standard. The emission standard chosen, either by the owner or operator or by the Technical Secretary, must be attained on or before August 9, 1973.
(2) For any process emission source operating within the State of Tennessee, construction of which began on or after August 9, 1969, and before June 7, 1974, the allowable emission standard shall be the diffusion equations presented in 1200-03-07-.02(3) below. This standard must have been attained at the time such process emission source first commenced operation. The owner or operator of such a source shall make known in writing to the Technical Secretary by July 1, 1972, whether he wishes to continue under the diffusion equations standard or to switch to the process weight table standard presented in 1200-03-07-.02(4). If no choice is so indicated, the Technical Secretary shall designate the emission standard of 1200-03-07-.02(4) below as the applicable standard. If the process weight table standard is chosen by such owner or operator or by the Technical Secretary, then such owner or operator shall have until August 9, 1973 to convert fully to the process weight table standard. It is expressly stipulated that in the interim period such a process emission source shall continue to observe the diffusion equations standard originally applicable.
(3) For those owners or operators of process emission sources who elect to have their process emission regulated by diffusion equations, the maximum allowable particulate emissions from such sources shall be determined by the procedures defined in (a), (b), and (c) below.
(a) Stack gas exit temperature less than 100°F (See Note)

Q = 3.02 x 10-4Vshs2 (ds/hs)0.71

(b) Stack gas exit temperature of 125°F or greater (See Note)
1. Stacks less than 500 feet in height

Q = 0.2hs (QT x 0.02 x (Ts-60))0.25

2. Stacks 500 feet in height and greater

Q = 0.3hs (QT x 0.02 x (Ts-60))0.25

(c)
1. For stack gas exit temperatures from 100°F to 124°F calculate allowable emissions as in (a) and either (b) 1., or (b) 2., depending upon stack height (using Ts of 125°F), and make linear interpolation based upon actual stack gas exit temperature.
2. The terms of the preceding equation shall have the following meaning and units:
(i) ds - inside diameter or equivalent diameter of stack tip in feet
(ii) hs - stack height in feet (Vertical distance above grade directly below tip of stack) equal to the height in existence or approved pursuant to (State) review as of January 31, 1972 except as follows:
(I) In cases where the actual height is less than that stated above, the actual height shall be used.
(II) In cases where the actual height is greater than that stated above, and the stack height increase was constructed (grading and pouring of concrete was done) prior to February 8, 1974, the actual height shall be used up to two and one half times the height of the facility it serves.
(iii) Q - maximum allowable emission rate in pounds per hour
(iv) QT - volume rate of stack gas flow in cubic feet per second calculated to 60°F.
(v) Ts - temperature of stack gases at stack tip in F
(vi) Vs - velocity of stack gases at stack tip in feet per second
(vii) NOTE - In determining applicability of equations in this paragraph based upon the exit gas temperature, the actual exit gas temperature must equal or exceed the stated temperature during ninety (90) percent or more of the operating time.
(4) For those owners or operators of process emissions sources who elect to have their process emissions regulated by the Process Weight Table, the maximum allowable particulate emissions from a process emission source shall be determined by Table 1.
(5) Whichever standard is chosen, all sources at the same facility must be regulated by that standard.
(6) The owner or operator of a facility having elected to be regulated under the diffusion equations in paragraph (3) of this rule may apply to the Technical Secretary for having said facilities regulated under the process weight table specified in paragraph (4) of this rule. Once said application is approved the facility cannot return to being regulated by the diffusion equations.

Notes

Tenn. Comp. R. & Regs. 1200-03-07-.02
Original rule certified June 7, 1974. Amendment filed March 13, 1978; April 12, 1978.

Authority: T.C.A. §§53-3412,68-25-105 and 4-5-202.

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