Villages of CC 6-CS 940728 DEVELOPMENT VIEW COMMI EE
ENGINEERING COMMENTS
ITEM: V'dlage o)~ Cottonwood Creek. Section Vl. Preliminary Plat. located east
of Coppeil Road; north of Padovay Blvd., at the reque~ of ~vton
Engineering, lnc.
DRC DATE: July 28,1994 & August 4,1994
CONTACT: Ken Griffin, P.E., Assistant CiO' ManageriCi~' Engineer (393-1016)
COMMENT STATUS: ] INITIAL I ,~ PRELIMLVARYI FL,;4L
1. Show the Hike and Bike Trail easement on the north side of lots 45 through 63 and
adjacent to lot 13. Block ??. Also. thc Hike and Bike Trail should be constructed.
2. Show Denton Creek.
3. Provide some type of access to the floodway easement:common area.
4. An off-site easement should be provided for the discharge of your drainage improvements
adjacent to lot 13.
5. The floodplain should be shown adjacent to lot 13.
6. Escrow will be required for Coppell Road.
7. All medians on Parkway Blvd. should be shown.
8. Thc subdivision immediately east (Coppcrstonc'~ is showing alleys adjaccm to lots 65
through 71. You should coordinate your lot widths and your alley locations with those
proposed alleys. However. if your subdivision goes first you will need to coordinate the
construction of the alley at thc time of the construction of your subdivision.
9. The alley location between lots 80 and 81 is on a blind curve for the street. Please
rcconfigurc.
10. Turn alley back between lots 13 and 14 to intersect the east-west street as opposed to the
current location between 12 and 13.
11. You arc showing an alley adjacent to lot 6. which is adjacent to a cul-de-sac. Thc
landscape treatment on the south side of Parkway had open screening adjacem to thc cul-
de-sacs. Some type of solid screening should be considered along this cul-de-sac to
Village of Cottonwood Creek, Section VI Preliminary Plat
Page 2 of 2 (Engineering Conunents)
shield thc alley.
12. It appears as though none of the streets on the east side of this subdivision that arc
accessing Parkway are accessing at a median opening. Therefore. you should consider
3'our street that accesses Parkway at Hampton Court to be a collector street for traffic
wanting to exit this subdivision and mrn back to the east. Hence. it should be at least a
60 foot right-of-way.
13. Minimum finish floors should be provided for all lots adjacent to the floodplain.
14. The street configuration, access and cul-de-sacs in this subdivision do not lend themselves
very well to traffic flow either with the existing streets on the south side or the existing
median openings in Parkway. Some consideration should be given to providing different
points of access to Parkway Blvd.
15. The Stormwater Master Plan shows a drainage system that would be adjacent to lots 12
and 13 and Coppell Road to be picking up an off-site drainage basin of approximately
1500 cfs. Your drainage plans should reflect that system.
16. There currently exist a 90 inch RCP running north and south through this site. Your
current lot configuration does not lend itself to homes being constructed on several lots
due to that existing drainage system. I would request that you reconfigure your street
so that a north/south street is more closely aligned with the alignment of the existing 90
inch RCP. Also. the existing easement appears to be 15 foot. Because of the size of the
90 inch RCP, a minimum 25 to 30 foot easement should be provided for the 90 inch
RCP. if it is not located within a street right-of-way.
17. All drainage areas should be shown on the drainage map.
18. The existing 90 inch RCP and the proposed 30 inch RCP should be extended further
north of the proposed lots so that they discharge directly into the existing creek.
19. Manholes should be provided at the upstream end of most of the proposed 8" sewer lines
in lieu of the cleanouts.
20. The proposed 8" water lines should be connected in several places to the system in
Parkway Blvd.
21. Does this need to be a replat of some existing lots or is it really a prelimina%' plat'?