Riverchase(3)-CS 870504Trinity River Authority of Texas
Central Regional Wastewater System
3110.620
May 4, 1987
H. Wayne Ginn
City Engineer
City of Coppell
P.O. Box 478
Coppell, Texas 75019
Subject:
Central Regional Wastewater System
Coppell Interceptor
Riverchase Point of Entry
Dear Mr. Ginn:
In response to the point of entry request dated April 21, 1987, the Authority
has reviewed the construction standards to be utilized on the point of entry at
station 130+98. The Authority approves your request based upon the information
submitted which includes the construction plans for Riverchase Development by
Nathan D. Maier dated November 1985, but is subject to the following
requirements.
Central Regional Wastewater System Engineering Division must be
contacted {214 263-2251 or 214 262-5186) 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.
All inspections will be performed only by Authority inspectors.
City inspectors are not responsible for Trinity River Authority
property.
2. All points of entry must be constructed within one year after their
acceptance by the Authority. Any alterations to the plans
concerning the Authority's interceptors, meter stations, point of
entries or easements must also be approved by the Authority.
3. A preconstruction meeting with the contractor and the Authority
is required prior to construction.
PO Box 531196
Grand Pra r e, Texas 75053
(214) Metro 263-2251
Trinity River A-thority of Texas
Central Regiom astewater System
P.O. Box 531196
6500 West Singleton Blvd.
Grand Prairie. Texas 75053
1214) 263-225t-(214) 262-5186
To:
- /'
/ t.X~--~ , ,
WE ARE SENDING YOU [] Attached ~- Under separate cover via
~ Shop drawings ~ Mylars, sepia plans
~ Copy of le~er ~ Chan~e order
L
THESE ARE TRANSMI~ED as check~ below:
For approval ~ Approved as submitted
~For your use ~ Approved as noted
/~,As requested [] Returned for corrections
PLANS TO BE RETURNED BY ._ _ _
the follAJ~'.~gI items:
~ Spec~ifications
For review and comment
FOR BIDS DUE . 19 . _
PRINTS RETURNED AFTER LOAN TO US
4
REMARKS__
COPY TO..
71001
REV 87
Trinity River Authority of Texas
Central Reglonel Wastewater System
3110.620
May 4, 1987
H. Wayne Ginn
City Engineer
City of Coppell
P.O. Box 478
Coppell, Texas 75019
Subject:
Central Regional Wastewater System
Coppell Interceptor
Riverchase Point of Entry
Dear Mr. Ginn:
In response to the point of entry request dated April 21, 1987, the Authority
has reviewed the construction standards to be utilized on the point of entry at
station 130+98. The Authority approves your request based upon the information
submitted which includes the construction plans for Riverchase Development by
Nathan D. Maier dated November 1985, but is subject to the following
requirements.
Central Regional Wastewater System Engineering Division must be
contacted {214 263-2251 or 214 262-5186) 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.
All inspections will be performed only by Authority inspectors.
City inspectors are not responsible for Trinity River Authority
property.
All points of entry must be constructed within one year after their
acceptance by the Authority. Any alterations to the plans
concerning the Authority's interceptors, meter stations, point of
entries or easements must also be approved by the Authority.
3. A preconstruction meeting with the contractor and the Authority
is required prior to construction.
P.O. Box 531196
Grand Prairie, Texas 75053
{214) Metro 263-2251
May 4, 1987
Wayne Ginn
Page 2
4. All P.V.C. connections shall use A.C. pipe adaptors.
5. Connections to the interceptor shall be by sawcut or core drill
method only. Jack hammering will not be allowed.
o
The Authority's interceptor is encased from Station 129+00 to
Station 131+00. A standard manhole does not apply here therefore a
shop drawing of the proposed manhole must be submitted prior %o
construction of the manhole.
The Authority recommends all incoming point of entry flow lines
should be at least above the spring line of the Authority's
interceptor, preferably above the crown. The Authority is not
responsible for overflow resulting from connections below the
recommended distance from the flow line of the Authority's
interceptor.
This point of entry shall serve the City of Coppell and will be metered at
Meter station 17.0E.
In addition to this, personnel from the Engineering Division must be onsite
during construction, as well as prior to any backfilling of the Authority's
facility in this area.
If you have any questions or comments please contact me.
Joan B. McNamee
Technical Services Engineer
cc: John Kirkpatrick, Engineering Technician
Janet Vick, Nathan D. Maier
INITY RIVER AUTItORITY OF TEXA¢
NORTHERN REGION PROJECTS
REQUEST FOR A POINT OF ENTRY
ATTACHNENT A
CONTRACTING PARTY:
PROPOSED PROJECT NAME:
DESIGN ENGINEER:
CONTACT: Janet Vick
City of Copp~L1
Riverchase
Nathan D. Maier Consulting Engineers, Inc.
TELEPHONE NO. 739-474l '
LOCATION OF PROPOSED CONNECTION (TRA NOMENCLATURE). NOTE: DETAILS CONCERNING
TRA INTERCEPTORS ARE AVAILABLE FROM THE PROJECT'BUT SHOULD BE VERIFIED IN THE
FIELD PRIOR TO SUBMITTAL.
PROJECT CRWS x TMC
INTERCEPTOR: Coppell Interceptor
STATION NO.: 130 + 98
PLANNED LAND USE FOR THE AREA TO BE SERVED:
· ACREAGE: 221± Acres
93% Residential
7% Commercial
INITIAL FLOW EXPECTED: o
ULTIMATE FLOW EXPECTED: 1.3
BASIS FOR ESYABLISHING FLOWS:
MGD (DAILY AVERAGE) 0 MGD (PEAK)
MGD (DAILY AVERAGE) 3.38 MGD (PEAK)
Based on 3.6 people/unit as per zonin9
density., for average daily flow. Peak flow equals 2.5 times
average daily flow plus infiltration. Infiltration of 500 GPD/ncre.
TYPE OF CONNECTION:
EXISTING MANHOLE:
SIZE OF CONNECTION:
MATERIAL OF CONNECTION:
15
Pvc
CONSTRUCT MANHOLE: x
SLOPE AT CONNECTIONt o.{5%
METERING FACILITY PROPOSED?
TYPE
YES x NO
ATTACHMENTS ACCOMPANYING THIS REQUEST CONTAIN:
CONNECTION:
PLAN SHEETS x
PROFILE SHEETS x
SPECIFICATIONS
GENERAL:
(PLEASE CIiECK)
METERING FACILITY:
PLAN SHEETS
PROFILE SHEETS
CONSTRUCTION PRINTS
CONSTRUCTION SPECIFICATIONS'
EQUIPMENT SPECIFICATIONS
SERVICE AREA ~p
REQUEST SUBMITTED BY:
(INCLUDES DRAINAGE AREA, CITY
BOUNDARIES, AND NAME OF DEVELOPMENT)
CONTRACTING PARTY: _ Cit~o£ CoDpe]~
TRA USE ONLY
POE NO.
THE ABOVE POINT OF ENTRY IS HEREBY
CONDITIONS:
SUBJECT TO THE FOLLOWING
SIGNED: ~'.
/
APPROVED BY:
m '/' //% t.t~., ·
CC: NORTHERN R~'GION OFFICE
DATE:
DATE:
L
i
NATHAN D. MAIER