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Riverchase(5)-CS 870504Central 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. 1. 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. P.O. Box 531196 Grand Prairie. Texas 75053 (214) Metro 263-2251 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. 6. 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. 7. 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 HARCH 86 -fly RIV~:~{ AUTliORIIY OF TEXAS -- AI'TACHHENT A h'ORTHERN REGION PROJECTS REQUEST FOR A POINT OF ENTRY CONTRACTING PARTY: PROPOSED PROJECT NAME: Riverchase DESIGN ENGINEER: Nathan D. >']aier Consulting Engineers, Inc. CONTACT: Janet rick 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: 93% Residential 7% Commercial -ACREAGE: 221± Acres INITIAL FLOW EXPECTED: 0 MGD (DAILY AVERAGE) 0 MGD (PEAK) ULTIMATE FLOW EXPECTED: 1.3 MGD (DAILY AVERAGE) 3.38 MGD (PEAK) BASIS FOR ESTABLISHING FLOWS: Based on 3.6 people/unit as per zoning density., for average daily flow. Peak flow equals 2.5 times average daily flow plus infiltration. Infiltration of 500 GPD/Acre. TYPE OF CONNECTION: EXISTING MANHOLE: CONSTRUCT MANHOLEt x SIZE OF CONNECTION: 15 SLOPE AT CONNECTIONt o.~5% MATERIAL OF CONNECTION: ~vc METERING FACILITY PROPOSED? YES x NO TYPE ATTACI(HENTS ACCOMPANYING TillS REQUEST CONTAIN: (PLEASE CliECK) CONNECTION: METERING FACILITY: PLAN SHEETS x PLAN SHEETS PROFILE SHEETS × PROFILE SHEETS SPECIFICATIONS CONSTRUCTION PRINTS CONSTRUCTION SPECIFICATIONS' EQUIPMENT SPECIFICATIONS GENERAL: SERVICE AREA ~P x (INCLUDES DRAINAGE AREA, CITY BOUNDARIES, AND NAME OF DEVELOPMENT) REQUEST SUBMITTED BY: SIGNATURE: CONTRACTING PARTY: TRA USE ONLY POE NO. THE ABOVE POINT OF ENTRY IS HEREBY SUBJECT TO THE FOLLOWING CONDITIONS: SIGNED: .~~~~.~ y/~m~ DATE: APPROVED BY: /~' ~ ....... DATE: CC: NORTHERN R~GION OFFICE ! ~ ~ ~' / : : ; t ~ : ~ ; : : ' : : : : : ' : .-: ! ' ' ; ' ' ~- : : :, : : ° ~ i ~ i-~ .... ._..l__... ..... ~--l--.l!l: ll[--ll'..l--F--! ! ': -- '"' '"----F--FI--!ll:--~llT ! --"' i 7--i ~ ? 7-- ':' T :' '-- !----?'--~----~ ..... __T------..------7--I.----.. l--l~--I:I~--T=--~__::?: I.----.~____:.__I:.I__:.:__ITT. --~'--''--F'''' !'--'--~ .... ! .... ~'---- :----':----~ .... 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