SC-Pinkerton E1-AG 910108 (2) AGENDA REQUEST FORM
CITY COUNCIl- M~ETING Jnnum~ 8~ 1~91 ITEM NUMBE~
...... · ~ · u-e.~, ....... aglroval of a ----llmln~'~ plat of the Pinkertoa Elementary
_e~hne.1 Additi~. located a~o~mately 150 feet west of Howell Drive, mon~ um n~ ~,~ .......
~V~e--;;~,---~-;-de ~q~s~-' con, ell.,~ed~,-,'~' ~oo, ~.
SUBMI-I-I-KD BY: ~ STAFF IIIRP.: ~ L. Sieb, l~n'~.. Director
ti OTHER REP.:
~ DATE:
EVALUATION OF ITEM: · 13 1
Date of Planning and Zmting Comn~,~4, M_e~. +~no~. December,--
Decision of Planning and Zoning Comm~--~ Ap~oved {6-0)
Pinkerten Elementary School Additien, in ord r to expand the e~ - xactutleS.
see attached staff rel~rt fro' furth~ ~
BUDGET AMT.
AMT +/- BUDGET
N/A
LEGAL REVIEW BY:
REVIEW~-D BY
CITY OF COPPELL
PLANNING DEPARTMENT
STAFF REPORT
PINKERTON ELEMENTARY SCHOOL - PRELIMINARY PLAT
P & Z HEARING DATE: December 13, 1990
C. C. HEARING DATE: January 8, 1991
LOCATION:
Approximetely 150 feet wear of Howell Drive, along the
north side of Southwestern Boulevard.
SIZE OF AREA: 9.45 Acres
REQUEST:
Approval of a preliminary plat.
APPLICANT:
Cop~ell Independent
School District
1201 Wrangler Drive
Coppell, Texas 75019
(214) 471-1111
Mr. Robert Bowman
Ayers & Associates
2110 Walnut Hill Lane
Irving, Texas 75038
(214) 570-5577
HISTORY:
Pinkerton Elementary School was built many years ago, but
was never platted. The purpose of platting this parcel is
to create a legal building site, and to expand the existing
facility.
TRANSPORTATION:
Southwestern Boulevard is presently a two-lane, asphalt
roadway. This road is scheduled for improvements, at the
time of development of the portion of Park West Coerce
Center, which will front on Southwestern Boulevard.
SURROUNDING LAND USE & ZONING:
North - Vacant, 'C' zoning
East - Single-family structures; 'C" zoning
South - Vacant; "LI" zoning
West - Vacant; "C' zoning
ANALYSIS:
Coppell Independent School District proposes to expand the
existing facilities to build a cafeteria along the back
portion of the school. The front of the building will be
renovated with a facade to give the front elevation a look
of continuity. Staff recommends approval of the
preliminary plat.
ALTERNATIVES:
ATTACt{MENTS:
1) Approve the Preliminary Plat
2) Deny the Preliminary Plat
1) Preliminary Plat
PNKPSTF
PROPOSED
DRA NAGE SWALE
AREA
E] ISTING,' '~ ",;'
SI HOOL
F. TI
PROPOSED
DRAINAGE SWALE
TOP 510.6
FL. 508.6
JuE'o 3 1991
PUBLIC
RIPRA
R.C.P:--
TO
SEWER
'R 0UTFALL
-2 TO
EARTHEI~ ....
ALLE~ L__.l
;. ...... ;..--.~ ~-:--~......
12,}(6,~..
RCBC
AND GRADE ,
ROADSIDE SWA L~--~ ND
DRIVEWAY CULVI'~R_~..S, , ,._~
-I.7_
N
0 m 100 200 300
SCALE IN FEET
FIGURE VII-3
SITE B
BULLOCK ST. AND HOWELL ST.
DRAINAGE IMPROVEMENTS
B. Bullock and tlowell Streets
1. Statement of Problem
The City of Coppell has received several complaints of street and yard £looding
from residents along Bullock and Howell Streets (Figure VII-3). This is an older subdivision
with open drainage along the front of the properties.
2. Summary of Data
Due to the age of this subdivision, grading and storm drainage plans were not
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
inte~,iewed. They expressed concern over yard and street flooding. One resident stated that
the water sometimes seeps into the house.
3. Analysis of Existing Conditions
Review of the City of Coppell 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
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 of this subdivision is also virtually non-
existent.
Another contributing factor to this drainage problem appears to bc the
construction of the athletic track immediately west of 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 VH-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 Bullock
and Howell Streets an earthen alley-draim~geway should be constructed. A 5 foot x 5 foot
special 'Y' inlet connecting into the existing Denton Tap Road drainage system is also
recommended. This inlet could also ouffall into the small tributary of Grapevine Creek
located immediately east of Denton Tap Road.
VII-6
The estimated cost of these draina§e inlprovements is $..3~0. This cost
includes boring under Denton Tap Road, inlet construction costs and gradh]g and
hydromu]ching of the proposed swa~es. 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 exdsting roadside
d~tches. Upon completion of the ¢|ean up, city staff should |nspect driwway cu|verts for
positive draina§e and ~nte~ty. Ultimate|y, some portion of the drainage fo]' this ares cou|d
also be included in the future Southwestern Blvd. storm sewer system.
VII-7