Villages of CC 6-LR 941212"ExceLLence by Experience"
PO Box 925&8
Sout~lake,:Texas 76092
CONS~TING ENGINEERS IN:
j ronmentaL Assessments
SoiLs & Foundations
Construction MateriaLs Testing
CoemerciaL & Industrial Inspection
(817) 329-0281
CONCRETE MIX DESIGN
PROJECT: Villages at Cottonwood Creek LOCATION: Coppel-1
JOB ~: 94-1200 DATE: 12-12-94 DAY: Monday
CLIENT: Glenn Thurman, Inc CONTRACTOR: Glenn Thurman, Inc
SPECIFICATIONS
28 DAY STRENGTH: 3000 psi CEMENT CONTENT: 5.0 sacks
~DMIXTURES: A.E.A. (ASTMC260 - 74) SLUMP: 3.0" +/- 1"
CO~RSE AGGREGATE: 1.5"-~4 Crushed Stone; Gifford Hill
FINE AGGREGATE: $4-200 Natural Sand; Gilford Hill
MATERIALS
TOTALS (ONE CUBIC YARD BATCH)
WEIGHTS
SG i CU YD'
ABSOLUTE
VOLUME
PORTLAND CEMENT (Holnam)
TYPE I (ASTM C150)
'FLY '~BH (ASTM C618)
3.15 470 2.391
CO~RSE AGGREGATE
1.5" - #4 CRUSHED STONE
2.68 1994 11.923
FINE ~GGREGATE
#4 - 200 NATURAL SAND
WATER
2.64 1340 8.131
1.00 200 (24 gal) 3.205
5.0% 6.0cz 1..3~0
--0--
A.E.A. (MASTER BUILDER)
W.R.
TOTALS 4004 27.000
AGGREGATE PERCENTAGE:
WATER/CEMENT RATIO:
UNIT WEIGHT (lib/cf):
60% Coarse 40% Fine
0.426 4.8 Gal/Sack
148.3
Respectfully submitted,
William Zeeh
civil Engineer
TEXAS NATURAL RESOURCE CONSERVATION COMMISSION
STANDARD EXEMPTION LIST
Incorporated By Reference Into 30 TAC 116,
Control of Air Pollution By Permits For New Construction
or Modification, ~116.211
ADOPTED AUGUST 16, 1993
93.
Any temporarily located concrete facility* that accomplishes wet batching, dry
batching, or central mixing and operates according to the. following
conditions:
(a)
Ail bulk storage silos, including auxiliary bulk storage trailers (pigs),
shall be equipped with fabric filter(s) having a maximum filtering
velocity of 4.0 ft/min with mechanical cleaning or 7.0 ft/min with
automatic air cleaning or a~e vented to the central collection system
specified in condition (f).
(b)
The cement weigh hopper shall be vented to a control device which
eliminates visible emissions or vented inside the charging hopper of the
transit mix truck if controlled by a suction shroud.
(¢)
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.
(d)
Ail in-plant roads (batch truck and material delivery 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.
(e)
Ail 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 all times.
(f)
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 shr6ud which is vented to a central
collection system with a minimum of 4,000 mctual 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 velocity.
(g)
Dust emissions from the loading of open-bodied trucks at the batch drop
point of dry batch plants, or dust emissions from the drum 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 acfm 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 velocity. Suction shrouds
at dry batch plants shall be used for closure over the receiving vehicle
compartment or bed.
(h)
Spillage of cement and fly ash used in the batch shall be cleaned up
immediately and contained or dampened so that dust emissions from wind
erosion and/or vehicle traffic are minimized.
TEXAS NATURAL RESOURCE CONSERVATION coMMISSION
STANDARD EXEMPTION LIST
Incorporated By Reference Into 30 TAC 116,
Control of Air Pollution By Permits For New Construction
or Modification, ~116.211
ADOPTED AUGUST 16, 1993
Page 2
Standard Exemption No. 93
(i) The facility (including associated stationary equipment and stockpiles)
shall be located at least 300 feet from any recreational area, school,
residence, or other structure not occupied or used solely by the owner
of the property upon which the facility is located. This distance
limitation does not apply to structures within the boundaries of the
project for which the facility is to pour boncrete when the facility is
located on or contiguous to the project.
(j) Unless the facility is to be located temporarily in or contiguous to the
right-of-way of a public works project, public notice and opportunity for
public hearing, as specified in ~116.10(a)(3) and (4) and (b), must be
published and documentation provided to the .TNRCC. The temporarily
located plant exempt from public notice may provide concrete for the same
contractor for project segments with the same governmental entity, but
may not produce concrete for other unrelated projects or other
governmental entities.
(k) Ail open-bodied vehicles transporting material from a dry batch plant to
the paving mixer(s) shall be loaded with a final layer of wet sand and/or
the truck shall be covered with a tarp to reduce the emissions of dust
to the minimum level possible under existing conditions.
(1) Before construction of the facility begins, written site approval shall
be received from the Executive Director of the TNRCC and the facility
shall be registered with the appropriate regional office using Form PI-7,
including a current TNRCC Table 20. The current Table 20 shall be on
file at each plant site.
(m) The appropriate regional office and local air pollution agency shall be
notified when the plant changes location and prior to starting operations
at each plant site.
* A temporarily located concrete facility occupies a designated site for
not more than 180 consecutive days or supplies concrete for a single
public works project or for the same contractor for related project
segments, but not other unrelated projects.
Effective Date :
July 20, 1992 ..
John Hall, Chairm'an
Pam Reed, Commissioner
Peggy Garner, Commissioner
Dan Pearson, Executive Director
TEXAS NATURAL RESOURCE CONSERVATION COMMISSION
Protecting Texas by Reducing and Preventing Pollution
January 27, 1995
Mr. Jamey C. Burchett
Contract Manager
GLENN THURMAN, INC.
P.O. Box 850842
Mesquite, Texas 75185-0842
Re:
Standard Exemption
Registration No. 26984
Concrete Batch Plant
Coppell, Dallas County
Account ID No. 92-6984-E
Dear Mr. Burchett:
This is in response to your exemption registration, Form PI-7,
concerning the proposed installation of a portable concrete
batch plant in Coppell, Dallas County. We understand that
this plant will be contiguous to a public works project, be
capable of producing 315 cubic yards of concrete per hour, and
operate at this location approximately 60 days.
After evaluation of the information which you have furnished,
we have determined that your proposed installation is exempt
from permitting procedures under Standard Exemption No. 93 if
constructed and operated as described in your registration
request. This standard exemption was authorized by the
Executive Director pursuant to Texas Natural Resource
Conservation Commission (TNRCC) Rule 116.211 of Regulation VI.
A copy of the exemption in effect at the time of this
registration is enclosed. You must operate in accordance with
all requirements of the enclosed standard exemption.
You are reminded that regardless of whether a permit is
required, these facilities must be in compliance with all air
quality 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
printed on recycled paper using, soy-based ink
Mr. Jamey C. Burchett
Page 2
January 27, 1995
Your cooperation in this matter is appreciated. If you have
any questions concerning this exemption, please contact
Mr. Wesley Smith of our Office of Air Quality, New Source
Review Program at (512) 239-6143.
Sincerely,
Gary ~. Wallin, P.E.
Manager, Mechanical Section
New Source Review Program
Texas Natural Resource Conservation Commission
Enclosures
cc: Mr. Jesse Macias, TNRCC, Air Program Manager, Arlington
Record No. 32623