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Vistas of C 1stP-CS 951228 DEVELOPMENT REVIEW COMMITTEE ENGINEERING COMMENTS ITEM: zC-$89. V~tstas of CopgdL zoning change from "A ~ (Agriculture) to 'C" (Commercial), to allow commercial development on 2.145 acres tract of land located on the east side of Denton Tap Road, just north of Denton Creek, at the request of Carter & Burgess, Inc. DRC DATE: December 28, 1995 and January 4, 1996 CONTACT: Ken Griffin, P.E., Assistant City Manager/City Engineer 004-$679) COMMENT STATUS: ,/'PRELIMINARY ~ SUBSEOUENT 1. Show the 100-year floodplain line and floodplain elevations. 2. On the vicinio' map. show the location of future S.H. 121. 3. Show zoning south of proposed site. DEVELOPMENT VIEW COMMI EE ENGINEERING COMMENTS ITEM: PD-149. Vistus of CoppelL zoning change from nHC" (Highway Commercial), "MF-2" (Multi-family 2), "LI (Light Industrial), and "C" (Commercial) to nPD-SF-7 and MF-2~ (Planned Development, Single- family-7 and Multi-family-2), to allow the development of single-family and multi-family residential uses on 128.15 acres of land, located on the east side of Denton Tap Road, north of the Denton Creek, at the request of Carter & Burgess, Inc. DRC DATE: December 28, 1995 and .lanuary 4, 1996 CONTACT: Ken Griffin, P.E., Assistant City Manager/City Engineer 004-3679) COMMENT STATUS: .~PRELIMINARY ~ SUBSEOUENT 1. Show ci~' limits. 2. There is a concern about the traffic impact that these developments may have on the access road of S.H. 121 Bypass. Traffic signals may need to be provided to allow vehicles to exit the subdivisions. In addition, a traffic impact analysis should be provided to determine the impact on Denton Tap and MacArthur Blvd. b.v these developments to determine if mitigation measures are required. Phase I 1. Provide a deceleration lane with a 100' storage and 100' taper on the frontage road. 2. Show city limits. 3. Please provide corner clips at all street intersections for handicap ramps. 4. Variance for alleys required. 5. The alley intersecting Street P should intersect at a 90 degree angle, not on a _~kew. 6. Street L will act as a collector: therefore, you should tO' to turn the al-'.eys between S~eets N and M and between Streets N and P so that they do not intersect Street L. 7. Information should be provided on the flood protection provided by the levee. The Coppell Floodplain Ordinance requires that the height of the levee be based on the standard project flood elevation, plus 3 feet of freeboard. 8. Any access to the state highway will also require TxDOT approval. - ' t'age.a ' " PD-149, Vistas of Coppell Phase H 1. Permission will be required from Lone Star Gas to extend the street over their easement. 2. Any access to the state highway x~ill also require TxDOT approval. 3. Deceleration lane with 100' storage and 100' transition should be provided at the access points to the highway frontage road. 4. All alleys should intersect the streets at 90 degree angles. 5. A 4' sidewalk in the park area is inadequate for a trail system. 6. Street J should act as a collector; therefore, the alleys between Street F and H and between Street K and H should be turned so that they do not intersect Street J. 7. Corner clips should be provided at all street intersections for handicap ramps. 8. Please comment as to what the item is on Lot 12. Block J. 9. Information should be provided on the flood protection provided by the levee. The Coppell Floodplain Ordinance requires that the height of the levee be based on the standard project flood elevation plus 3 feet of freeboard. 10. The drainage easement adjacent to Lots I-15, Block K should be dimensioned on each lot. I 1. The CiD' has a concern about the length of Street J when it is also extended into Pha_m I in regards to traffic. We have various streets similar to this in the CiD' of Coppell of which we receive a complaints on speeding vehicles and cut through traffic. The City requests that you look at recom~guring the road to discourage speeders andior cut through traffic. This might be accomplished with some type of additional curvature in the street, cul-de-sacs, off setting the street so that it is not a continuous run, traffic circle, or any other traffic control device of which would be agreeable to the City. 12. The plan shows to dedicate the area that is a 50' Lone Star Gas easement to the CiD' of Coppell for a park. I have a question as to whether or not the City warns this dedicated as a park because of what could be future problems in actually constructing something in the Lone Star Gas easement. Obviousl.v, the Lone Star Gas easement has to be left open and we have had some problems with the existing Lone Star Gas easement that crosses Denton Tap when developers have tried to build on it. 13. The location of the existing 25' drainage and sewer easement across the back of Lots 1-15. Block K will pose a problem to the City of Coppell in the future as the homes are built and the property developed. The easement is not at the rear of the property, but across the east half of the property. I know that the drainage system is existing and will be expensive to relocate, but you should review this situation to determine if there is a way to reconfigure the lots so that the easement is at the ve~' rear of the lot as opposed to cutting through the east half of the lot. Phase 111 1. Corner clips should be provided at all street intersections for handicap ramps. 2. Information should be provided on the flood protection provided by the levee. The Coppell Floodplain Ordinance requires that the height of the levee be based on the standaxd project flood elevation plus 3 feet of freeboard. 3. Show the floodplain limits adjacent to the site along with the floodplain elevations. 4. Any access to the state highway will also require TxDOT approval. PD-149, Vistas of Coppell Phase IV 1. Deceleration lane should be provided for the access that intersects the state highway. 2. Any access to the state highway will also require TxDOT approval. Phase V 1. Any access to ~he state highway will also require TxDOT approval. 2. Show the City Limits. 3. More than likely any controlled access to this site will be at Highland Drive or S.H. I21. Therefore, the Cit· requests that you try to limit your access from Denton Tap Road and possibly take all of your access off of Highway Drive or S.H. 121.