SS9402-CS 950627John Hall, Chairman" , , , ~ ..
Pam Reed, Commi~ioner
R. B. 'Ralph' Marquez, Commi~ioner
Dan Pearson, Executi~ Directog
Ex^s R .sou c Co s av^ o Co iss o
Protecting Texas by Reducing and Preventing Pollution
June 27, 1995
Larry Redden, P.E.
HDR Engineering, Inc.
12700 Hillcrest Rd, Suite 125
Dallas, Texas 75230
Re:
City of Coppell
Sanitary Sewer Line for Grapevine III & IV Bethel Rd
TNRCC Permit No.: Unknown
WPR Log No.: 065/061
County: Dallas
Dear Mr. Redden:
We have received the design submittal included with your cover letter
dated 6/19/1995.
The rules which regulate the design, installation and testing of
domestic wastewater projects are found in 30 TAC, Chapter 317, of the
TNRCC's rules titled, Design Criteria for Sewerage Systems.. All plans
and specifications submitted for TNRCC approval must comply with these
rules.
Beginning on September 1, 1994, severe budget reductions required the
TNRCC to eliminate most reviews of domestic wastewater project plans
and specifications. At most, only a cursory review of the proposed
project was performed. A technical review to determine conformity with
30 TAC Chapter 317 has not been performed. The proposed project is
approved with the following comments and conditions:
An engineering report must be prepared and sealed by a
Professional Engineer registered in the State of Texas.- This
engineering report must include all constants, graphs, equations,
and calculations, which are needed to both justify the design and
show full compliance wSth Section 317.1(c) of the TNRCC's rules
requiring a final engineering report. Copies of this report shall
be made available to the TNRCC, upon request.
The final version of the project plans and specifications shall
include any and all information necessary to show full compliance
with the applicable requirements detailed in Chapter 317 of the
TNRCC's rules. Copies of the final version of the project plans
and specifications shall be made available to the TNRCC, upon
request.
P.O. Box 13087 · Austin, Tex,~ 78711-3087 · 512/239-1000
print~l on recycled ~per .,uteri ~4)aJ~l ink
Larry Redden, P.E.
Page 2
AnY test results necessary to show compliance with the testing
requirements of Chapter 317 shall be made available to the TNRCC,
upon request.
The TNRCC still maintains its review authority and may utilize
this authority at any time in the future. Ifplans are to undergo
review, the TNRCC will notify you upon our receipt of the project.
Also, please be aware of Section 317.1(a) (2) (A) of the rules which
states, "Approval given by the commission is not intended to
relieve the sewerage system owner or the design engineer of any
liabilities or responsibilities with respect to the design,
construction, or operation of the project."
o
Within 60 days of the completion of construction, an appointed
engineer must notify both the Permitting Section of the TNRCC's
Watershed Management Division and the appropriate Region Office of
the date of completion. The engineer must also provide written
certification that all construction, materials and equipment, and
test results were substantially in accordance with the approved
plans and specifications, the rules of the TNRCC and any change
orders filed with the TNRCC. All notifications, certifications
and change orders must include the signed and dated seal of a
Professional Engineer registered in the State of Texas.
Ail plans and specifications shall conform'with any other waste
discharge requirements and waterquality standards established by
the TNRCC, as the requirements pertain to a regulated discharge.
If you have any questions or if we can be of any further service,
please call me at (512) 239-4554.
Sincerely,
Thomas W. Weber
Manager, Permitting Section
Wastershed Management Division
cc:
City of Coppell
TNRCC, Region 4 Office