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B. Bullock and th)well Streets
I 1. Statement of Problem
The City of Coppeil has received several complaints of street and yard
..~ from residents along Bullock and Howell Streets (Figure VII-3). This is an older subdivision
with open drainage along the front of the properties.
I 2. Summary of Data
Due to the age of this subdivision, grading and storm drainage plans were not
.~l available. Plans for Pinkston Elementary School to the west of Howell Street also could not
be located. However, this subdivision is reflected on the City's 1985 topographic maps.
Field reconnaissance was made on May 7, 1990 and several residents were
interviewed. They expressed concern over yard and street flooding. One resident stated that
the water sometimes seeps into the house.
3. Analysis of Existing Conditions
I Review of the City of Coppcll topographic maps show very little topographic
relief, with natural ground slopes of less than 0.5 percent over the majority of the
· subdivision. In very flat areas such as this, extra care must be taken to maintain all open
I drainage adequately. The drainage ditches along Howell are in need of regrading and many
of the driveway culverts arc over 50 percent clogged by dirt and debris. Drainage along thc
St. Louis and Southwestern railroad at the rear o~' this subdivision is also virtually non-
t existent.
Another contributing factor to this drainage problem appears to be the
construction of the athletic track immediately west tff the Howell Street homes. The existing
school site drainage swale is blocked by this track fill area causing water to pond along thc
rear of these homes. The existing school drainage swale also ponds water at its north end
near the railroad.
4. Proposed Solutions
The recommended solutions for the Bullock Street and Howell Street drainage
:.~ problems are shown on Figure VII-3. They consist of the construction of a drainage swale
along the rear of/the west side Howell Street lots and along the railroad. Between Bt, ll~)ck
and Howell Streets an earthen allcy-drainagcway should be constructcd. A 5 foot x 5
.:~ special '¥' inlet connecting into thc existing Denton Tap Road drainage system is also
{'~ recommended. This inlet could also outfall into the small tributary of Grapevine Creek
located immediately east of Denton Tap Road.
The estimated cost of tilt:sc drainage improvements is $~",~0. This cost [.
includes boring under Denton Tap Road, inlet construction costs and grading and
hydromulching of the proposed swales. It also assumes that city forces would be utilized to
install the two drainage swales. Equipment rental is included. The residents of the
neighborhood should be included in the plan to clean out the existing roadside drainage
ditches. Upon completion of the clean up, city staff should inspect driveway culverts for
positive drainage and integrity. Ultimately, some portion of the drainage for this area could
also be included in the future Southwestern Blvd. storm sewer system.
i
VII-7
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DRAINAGE P R°
PROPOSED
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DRAINAGE SWALE LEAN AND GRADE
ROADSIDE SWALMD
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1 N FIGURE VII-3
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• • SITE B
0 100 200 300 BUDLRLOACINKAGSET.NAPNRDOTEWMEENLLTSST.
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SCALE IN FEET
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