Shadow Woods-CS 891201 NATHAN D. :MAIER
CONSULTING ENGINEERS, INC.
Decembi~r 1, 1989
Mr. Russell Doyle , '
255 Parkway Blvd. ~~ ~..~ ~
~ ~Re~" .Shadow Woods Estates ~ ,:; ! :: :
~. 18-10-116 ~
As you know, our alley A-1 along the south boundary line of shadow Woods has presented a significant
design challenge in our preparation of engineei'tng plans for the project. The difficulty lies inthe fact that the
elevation profile along the existing fence line is"essentially flat and the new alley, which is directly adjacent to
the fence, must meet minimum grade criteria per the City of Coppell subdivision ordinance:' TNs creates an
obvious and unavoidable conflict. ~i) : :
Our original concern, as you will recall, was tl~at, along the ~este~ly end of the alley, the Paving was lower
than the natural ground at the fence line. This was successfully controlled with the use of a curb and concrete
rip-rap slope protection. ~ ,:
There is now some concern regarding the east end where the paving is higher than the natural ground.
Although 'it appears that the existing lots on the east end of Oak Grove drain primarily toward the street,
some runoff may move to the northwest. ·
utuhaUrintent at this time is to grade a small between the alley paving and the fence u'p any water
ditch
lo
at arrives at this location. I am hopeful that this will be an acceptable permanent solution; however, the sit-
tion should be monitored after several rains to determine if a problem exists, c, r ~¥ 5't°~
{ I~problems do occur, the next step will be to install a small Perforated trench drain to evaCha~e water to thee
NM'Coppe I Road ditch. An easement existing along the rear of our Lot 1, Block A, will allow this.
In an ufirelated matter, the paving contractor has encroached into a couple of our lots wh~ cfnstructing his
t90' alley turns. The only potential problem at these locations concerns underground utilities located adjacent
,,/to the paving. To eliminate any potential conflicts, we are in the process of preparing "alley and utility" ease-
--ments that will provide ample working room for the Utilit~ companies. I will submit these to you upon their
completion.
Aside from these minor problems, we are quite pleased with the construction and the look of the site. The
owner has taken great care in saving as many trees as possible, and I think the City will be proud of this subdi-
vision when it is completed.
Sincerely,
NATHAN D. MA]ER
CONS~-LTi.NG ENGINEERS, INC.
Michael Daniel, P.E.
CMD/rdp
cc: Steve Stolte
Larry Davis
Three NorthPark/8800 N. Central Expwy./Suite 300/Dallas, Texas 75231/(214) 739-4741
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