Forest Cove 1-CS 980325 Barry R. McBee. Chairman .
Jo~m M. Baker, Commissioner
'Dan Pearson. Executive Director
TEXAS NATURAL RESOURCE CONSERVATION COMMISSION
Protecting T~as by Reducing and ~ev~ting Pollution
March 2~, 1998
Ms. Jean S. Boney
Presiden~
Si~e Concrete, Inc.
P.O. Box 1~4489
I~'~g, Texas 7~01~-~89
Re: Change of Location
Exemption Registration Nos. 37096V,
37097V, and 37098V
Concrete Batch Plant
~'>'Dallas County
Account ID Numbers 91-4648-C, 92-211 l-H,
and 92-5737-H
Dear Ms. Boney:
This is in response to your exemption registration, Form PI-7, concerning the proposed
construction of one of the above-listed facilities to be located at the Forest Cove Estates,
300 feet south of Sandy Lake Road and 1,500 feet east of Coppell Road, in Coppell,
Dallas County. We understand that you will be notifying the Texas Natural Resource
Conservation Commission (TNRCC) Arlington Regional Office and the appropriate local
programs as to which one of the concrete batch plants you are moving to the above-mentioned
location. Also enclosed is a notification form for you to complete and submit to us prior to your
move. We also understand that this application is for a right-of-way public works project and
that your proposed facili~ site will be in or contiguous to that project and is, therefore, exempt
from public notice procedures.
After evaluation of the information which you have furnished, we have determined that your
proposed construction is exempt from permitting procedures under 30 Texas Administrative
Code (TAC) Sections 106.202 and 106.512, if constructed and operated as described in your
registration. These exemptions were authorized by the TNRCC Executive Director pursuant to
30 TAC Chapter 106. A copy of the exemptions in effect at the time of this registration is
enclosed. You must operate in accordance with all requirements of the enclosed exemptions.
You are reminded that regardless of whether a permit is required, these facilities must be in
compliance with all rules and regulations of the TNRCC and of the U.S. Environmental
Protection Agency at all times.
P.O. Box 13087 · Austin. Texas 78711-3087 · 512!239-1000 · lnternet address: w~v.tnrcc.state.tx.us
'~: %',: ..... ~'., :. ~ -:' , ".~ '.-~.:~ .I "-
Ms. Jean S. Boney
Page 2
March 25, 1998
Re: Exemption Registration Nos. 37096V,
37097V, and 37098V
You are advised that we will void your previous exemption registration file upon relocation of
your facility. If you desire to move back to the previous site, it will be necessary to register for
an exemption or obtain a permit to operate at that site.
Your cooperation in this matter is appreciated. If you have any questions concerning this
exemption, please call Ms. Helga Chatelle at (512) 239-1585 or write her at Texas Natural
Resource Conservation Commission, Office of Air Quality, New Source Review Permits
Division (MC-162), P.O. Box 13087, Austin, Texas 78711-3087.
Sincerely,
~,~Gary I. Wallin, P.E.
Manager, Mechanical Section
New Source Review Permits Division
Texas Natural Resource Conservation Commission
GW/HC/rl
Enclosures
cc: Mr. Jesse Macias, Air Program Manager, Arlington
Record Nos.57291, 57292, and 57293
'rEX-kS NATUP~kL RESOURCE CONSERVATION CO,.~L-MISSION
CHAPTER 106 -EXEMPTIONS FROM PERMITTh-NG
§106.202. Temporal- Concrete Batch Plants (Previously SE 93).
Any temporarily located concrete facility that accomplishes wet batching, dr2,.' hatching, or
central mixing and operates according to the following conditions of this section is exempt. For
purposes of this section, a temporarily located concrete facility is one that occupies a designated site
for not more than 180 consecutive days or supplies concrete for a single public wor'.cs project or for
the same contractor for related project segments, but not other unrelated projects.
(1) Ail bulk storage silos, including auxiIiary bulk storage trailers (pigs), shall be
equipped with fabric filter(s) having a maximum filtering velocity, of 4.0 feet per minute (ft/min) with
mechanical cleaning or 7.0 ft/min with automatic air cleaning or are vented to the central collection
system specified in paragraph (6) of this section.
(2) The cement weigh hopper shall be vented to a control device which eliminates
visible emissions o'r vented inside the charging hopper of the transit mix truck if controlled by a
suction shroud.
(3) A visible and/or audible warning mechanism shall be installed on each silo or
auxiliary, bulk storage trailer to warn operators that the silo or trailer (pig) is full.
(4) All in-plant roads (batch truck and material deliver2,.' truck roads) and areas
between stockpiles and conveyor hoppers shall be watered, treated with dust-suppressant chemicals,
oiled, or paved with a cohesive hard surface that can be repeatedly swept, washed, and maintained
intact and cleaned as necessary, to achieve maximum control of dust emissions.
(5) All stockpiles shall be sprinkled with water and/or dust-suppressant chemicals as
necessary to achieve maximum control of dust emissions. An operable stockpile watering system
shall be on-site at ali times.
(6) Loading of rotary mix trucks at wet batch plants shall be through a discharge
spout equipped with a water fog ring having low-velocity fog nozzles spaced to create a continuous
fog curtain that controls dust emissions, or through a suction shroud which is vented to a central
collection system with a minimum of 4,000 ac.ual cubic feet per minute (acfm) of air to a fabric filter
with air cleaning and a 7.0 ft,'min maximum filtering velocity or automatic sequenced mechanical
cleaning and a 5.25 ft/min maximum filtering velocit2,.'.
(7) Dust emissions from the loading of open-bodied trucks at the batch drop point of
dry batch plants, or dust emissions from the dram feed for central mix plants shall be controlled by a
suction shroud which is vented to a central collection system with a minimum of 4,000 acfrn of air to
a fabric filter with air cleaning and a 7.0 ft/min maximum filtering velocity or automatic sequenced
mechanical cleaning (not manually activated) and a 5.25 ft/min maximum filtering velociv,.'. Suction
shrouds at dry batch plants shall be used for closure over the receiving vehicle compartment or bed.
TEXAS NATURAL RESOURCE CONSERVATION COS[-MISSION
CHAPTER 106 - EXEMFrlONS FROM PEILMITTING
§106.512. Stationa~' Engines and Turbines fPreviously SE 6).
Gas or liquid fuel-fired stationary, internal combustion reciprocating engines or gas turbines that
operate in compliance with the following conditions of this section are exempt.
(1) The fac~ity shall be registered by submitting the comrnission's Form PI-7, Table 29
for each proposed reciprocating engine, and Table 31 for each proposed gas turbine to the commission's
Office of .&ir Qualis' in Austin within ten days after construction begins. Engines md turbines rated less
than 240 horsepower (bp) need not be registered, but must meet paragraphs (5) and (6) of this section,
relating to rue! and protection of air quality.. Engine hp rating shall be based on the engine
manufacturer's maximum continuous load rating at the lesser of the engine or driven equipment's
maximum published continuous speed. A rich-bum engine is a gas-fired spark-ignited engine that is
operated with an e~aust oxygen content less than 4.0% by volume. A lean-bum engine is a gas-fired
spark-ignited engine that is operated with an em~ausr oxygen content of 4.0% by volume, or greater.
(2) For any engine rated 500 hp or greater, subparagraphs (A) - (C) of this paragraph
shall apply.
(A) The emissions of nitrogen oxides (NO~) shall not exceed :,he following limits:
(i) 2.0 grams per horsepower-hour (g/hp-hr) under all operating
conditions for an.,,' gas-fired rich-bum engine;
(ii) 2.0 g/lap-hr at manufacturer's rated full load and speed, and other
operating conditions, except 5.0 g/~p-,hr under reduced speed, 80-100% of full torque conditions, for any
spark-ignked, gas-r~red lean-bum engine, or any compression-ignited dual fuel-fired engine manufactured
new after June 18, 1992;
(iii) 5.0 g/lap-hr under all operating conditions for any spark-ignited, gas-
tired, lean-bum two-cycle or four-cycle engine or any compression-ignited dual fuel-fired engine rated
825 hp or greater and manufactured after September 23, 1982, but prior to June 18, 1992;
(iv) 5.0 g/bp-hr at manufacturer's rated full load and speed and other
operating conditions, except 8.0 g..'hp-hr under reduced speed, 80-100% of full torque conditions for any
spark-ignited, gas-fired, lean-burn four-cycle engine, or any compression-ignited dual fuel-fired engine
that:
(I) was manufactured prior to June 18, 1992, and is rated less
than 825 bp: or
(II) was manufactured prior to September 23, 1982;
TEXAS NATURAL RESOURCE CONSERVATION CO~'IISSION
CHAFfeR 106 - EXEMlvYIONS FROM PERMITTING
8106.512. Stationary Engines and Turbines (Previously SE 6). (CON'T)
(6) There will be no violations of any National Ambient Air Quality Standard (NAAQS)
in the area of the proposed facility. Compliance with this condition shall be demonstrated by one of the
following three methods:
(A) ambient sampling or dispersion modeling accomplished pursuant to guidance
obtained from the executive director. Unless otherwise documented by actual test data, the following
nitrogen dioxide (NO:)/NO~ ratios shall be used for modeling NO2 NAAQS; Figure 1:30 TAC
§106.512(6)(A)
Figure 1' 30 TAC §106.512(6)(A)
NO~ Emission Rate (Q)
Device ~/h~-hr NO,/NO, Ratio
IC Engine Less than 2.0 0.4
IC Engine 2.0 thru 10.0 0.15 + (0.5/Q)
IC Engine Greater than 10.0 0.2
Turbines 0.25
IC Engine with catalytic converter 0.85
(B) all existing and proposed engine and turbine exhausts are released to the
atmosphere at a height at least twice the height of any surrounding obstructions to wind flow. Buildings,
open-sided roofs, tanks, separators, heaters, covers, and any other type of structure are considered as
obstructions to wind flow if the distance from the nearest point on the obstruction to-the nearest exhaust
stack is less than five times the lesser of the height, Hb, and the width, Wb, where: Fibre 2:30 TAC
§106.512(6)(B)
Figure 2:30 TAC §106.512(6)(B)
Hb = maximum height of the obstruction, and
Wb = projected width of obstruction =
3.141
where:
L = length of obstruction
W = width of obstruction
TEXAS NATURAL RESOURCE CONSERVATION CO~-MISSION
CHA_Wl'ER 106 - EXF. aMI'TIONS FROM PERMITTh-NG
§106.512. Stationary. Engines and Turbines (Previously SE 6). (CON'T)
(C) the total emissions of NO~ (nitrogen oxide plus NO,_) from all existing and
proposed facilities on the property do not exceed the most restrictive of the following:
(i) 250 tpy;
(ii) the value (0.3125 D) tpy, where D equals the shortest distance in feet from
any existing or proposed stack to the nearest property line.
Adopted February 19, 1997 Effective March 14, 1997