Shadow Woods-CS 891201NDM,
NATHAN D. MAIER
CONSULTING ENGINEERS, INC.
December 1, 1989
Mr. Russell Doyle
City of Coppell
Coppell, Texas.~_ 75~---
Re/' ~hadow Woods Estates
'.~.~~~__o.:88-10-116
Dear Russell:
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 engineering plans for the project The diffiaflty lies in the fact that the
elevation profile along the existing fence line is essentially fiat and the new alley, which is directly adjacent to
the fence, must meet minimum grade criteria per the City of Coppeil subdivision ordinance. This creates an
obvious and unavoidable conflict.
Our original concern, as you will recall, was that, along the westerly 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.
four intent at this time is to grade a small ditch between the alley paving and the fence to pick u~ any wat.e.r
~ that arrives at this location. I am hopeful that this will be an acceptable permanent solution; .however, the s~t-
uat/on should be momtored after several rams to deternune if a problem exists, q ~ ~ ~
]~ problems do occur, the next step will be to install a small perforated trench drain to evacuate water to t~
~dCoppell Road ditch. An easement existing along the rear of our Lot 1, Block A, will allow this.
In an unrelated matter, the paving contractor has encroached into a couple of our lots when constructing his
~ 90' alley turns. The only potential problem at these locations concerns underground utilities located adjacent
..... ' ~ ' ' J e~,~
to the paving. To elmunate any potential conflicts, we are In the process of prepanng alley and utihty' -
ments that will provide ample working room for the Utility 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. MAIER
CONS~G ENGINEERS, INC.
ClVlD/rdp
cc: Steve Stolte
Larry Davis
Three NorthPark/8800 N. Central
Expwi;./Suite
3O0/Dallns, Texas 75231/(214) 739-4741