SS9601-CS000502Trinity River Authority of Texas
Central Regional Wastewater System
3110.620.010
May 2, 2000
Mr. Kenneth M. Griffin, P.E.
Director of Engineering and Public Works
City of Coppell
P.O. Box 478
Coppell, Texas 75019
Dear Mr. Griffin:
Subject: Central Regional Wastewater System
Point of Entry - City of Coppell
Elm Fork Relief Interceptor, Segment EF-G, Station 47+30
Serving the East Belt Line Road Sanitary Sewer Project
CRWS file no. 961231 .poe
In response to the point of entry request dated April 5, 1996, the Authority has reviewed the
construction standards to be utilized. The Authority approves your request based on the
information submitted which includes a plan and profile sheet titled East Belt Line Road
Proposed Sewer Line. Connection details from this sheet have been revised to indicate
connection to the Elm Fork Relief Interceptor, Segment EF-G. These plans were prepared by
the City of Coppell. Approval for this point of entry is subject to the following requirements:
1. The Central Regional Wastewater System Engineering Field Services Division
must be contacted at (972) 263-2251 at least 72 hours prior to construction. If the
Authority is not notified, the Authority reserves the right to request the contractor
to excavate his work for inspection. All inspections shall be performed by
Authority personnel only. City inspectors are not responsible for Authority
facilities.
2. All points of entry must be constructed within one year after their approval by the
Authority. Any alterations to the plans concerning the Authority's pipeline,
manholes, or other appurtenances must be preapproved by the Authority.
3. A preconstruction meeting between the contractor, the City of Coppell, and the
Authority will be required pr!or to construction.
6500 W. Singleton Blvd.
Dallas, Texas 75212
Metro (972) 263-2251
Adrnin Fax (972) 642-7815
Lab Fax (972) 262-0619
May 2~ 2000
Mr. Kenneth M. Griffin, P.E.
Page 2
4. If construction of the line is after the construction of Elm Fork Relief Interceptor,
Segment EF-G, the connection will be made to a stub out left for that purpose.
The exact location and elevation of the stub out shall be verified prior to
construction of the bore across Belt Line Road. If construction is prior to
construction of Elm Fork Relief Interceptor, Segment EF-G, then a manhole must
be constructed on the Coppell Interceptor and the connection made using an
adapter approved by TRA. The connection must be made at the elevation and
location for the Elm Fork Relief Interceptor, Segment EF-G. The City has elected
to connect to the TRA system at the flowline, therefore, the connection will
operate under submerged flow conditions and flows from the Authority's line may
surcharge into the City line. It will be the responsibility of the City to install
backflow prevention devices if necessary.
5. The contractor shall verify the location and elevation of the existing TRA line prior
to the construction of the last portion of the connection.
6. The contractor shall use OSHA approved trench safety procedures when working
around TRA facilities and OSHA approved confined space entry procedures when
entering a TRA manhole. The safety equipment shall be furnished by the
contractor and shall be OSHA certified. Persons working in these areas shall be
trained in the proper use of the safety equipment. TRA personnel shall be
present anytime a TRA manhole is entered.
7. TRA lines, manholes, and appurtenances shall be secured at all times during the
construction of this point of entry.
This point of entry will service the City of Coppell, Texas and wastewater contribution will be
monitored at Meter Station 17.0E (to be relocated during the construction of Elm Fork Relief
Interceptor, Segment EF-G).
If you have any questions or require further information, please contact John H. Herndon, P.E.,
Environmental Services Coordinator at (972) 263-2251.
Sincerely,
WM. B. CYRUS ~'
Manager, Technical Services
Attachment
cc: Patricia M. Cleveland, Manager of Operations, Northern Region
John H. Herndon, P.E., Environmental Services Coordinator, CRWS
Robert A. Starkey, Interceptor System Specialist, CRWS