DR9303-CN 930713 AGENDA REQUEST FORM
~ITY COUNCIL I~I-:~.I'ING Jnly 13. 1993 n'l~! NUMBER
ITEM CAPTION:
A. Reconsideration of authorizing the City Attorney to prepare a contract for the City's participation in the drainage
solution with the owner of the property at the northeast corner of Moore and Sandy Lake at a not to exceed dollar
amount to be determined by City Council and authorizing the Mayor to sign.
B. Discussion and consideration of allocating funds set aside in the Fiscal Year 1992/93 budget for drainage and
roadway improvements to participate in the drainage solution at the intersection of Moore Road and Sandy Lake Road
and authorizing the City Attorney to prepare a contract for the City's participatio~n~t'm~rainage solu~th the
owner of the property at the northeast, c. orner of Moore and Sandy Lake at a' hot to ~4 dollar a~nt"t~ be
determined by City Council and auth,or~z~ng the Mayor to sign. ~- ~ \
SUBMI'I'IED BY: t~.n~x ~. -- STAFF RF~.: Konnoth M Grimn, P F j
(Director's ' ~ Ct. ty Eng:i.neer
OTHER REP.:
DATE:
EVALUATION OF ITEM: .~~~
See attached memo. APPROVED
CiTY COUtNOIL
BUDGET AMT. d/a AMT. ESTIMATED
AMT. +/- BUDGET HNANCIAL' RE IE BY
COMMENTS:
Certificates of Obligation, Series 1992, included $200,000, of which $196,000 is available
after cost of issuance of the bonds.
LEGAL REVIEW BY: REVIEWED BY CM
AGESDA REQCE~T FORM REVISED 2 '93
~LT?ORT DOCL.'ME~TATION FOR AC£~DA ITeM
.~ T.~.'~P 2ECU.;'~_, BY CITY F.A.~AGER' S OFFICE:
.'-U?PORT DOCC~N'T. ATION SI'BMh'C~ED WITN AGE~'DA ITEM: [{O. OF OI{IGINILS IEQUII{ED
?='~CS~ LET-TERS/REPORTS/BiLLS~q4INiJTES: / I each
?'-'"U-~--'-~?"AC~-r~----~T ................. : 3 originals fo~ signature
fi. 2.?. 2~NTi~CT ..................... : 6 origin~le for signature
~.--~;CE ORD. ERS ....................... : 3 orisin&Im for et~a~ure
ORDi.~A.~CE ........................... : I b~eb~k {or n~ure + 3 c~ien
C~T~ .................. .. ...... ...: 1 blueback for a~dre + 3 c~les
~SO.~..ON .......................... : 2 bluebacb for o~tun + I copy
~CC~O~ ........................ : 2 bluebacb for mixture + 1 c~y
LOCATiO~ Y/PS ....................... : 12
ZONING PY.4~S ........................ : 12
FRELIMI.'{AEY/FINAL PLAYS ............. : 12
SITE PLANS .......................... : 12
i.m,.'~ S CAP E PLA~S ..................... : 12
ARCHITECT'dEAI. RENDERINCS ............ : 12
~.ATE PL'~LISRED TN THE CITIZ~S~ ADVOCATE:
NOTII~YCATION TO:
DATE/N~I'HOD OF CONTACT:
NOTES
MEMORANDUM
To: Mayor and City Council
From: Kenneth M. Griffin. P.E., City Engineer ~
Date: June 22, 1993
RE: Discussion and consideration of allocating funds set aside in the Fiscal Year
1992/93 budget for drainage and roadway improvements to participate in the
drainage solution at the intersection of Moore Road and Sandy Lake Road and
authorizing staff to enter into a contract with the owner of the property at the
northeast corner of Moore and Sandy Lake at a not to exceed dollar amount to
be determined by City Council.
At the February 9, 1993 City Council meeting, information was brought forth concerning the
drainage problems associated with the "Barbara Austin" property. A copy of my memo to Alan
Ratliff is attached. The memo estimates the cost of the drainage solution to be in the range of
$240,000. The City of Coppell Engineering staff has designed the drainage solution for this
problem. The solution involves approximately 1350 linear feet of 66" RCP, 166 feet of 6x4 box
culvert, the addition of a 48" RCP beneath Moore Road and the construction of various inlets
and manholes to accommodate the drainage coming south of Sandy Lake down Moore Road.
The engineering design has been provided to Bill Anderson of Dan Dowdey and Associates.
Mr. Anderson was provided the design because he is currently working on the onsite
improvements on Barbara Austin's property and the design of Moore Road.
Once the design was completed and an actual material take off was generated, the construction
cost of the project was estimated to be S260,000. During the design of the drainage solution,
the actual drainage basin itself was reevaluated considering area and run-off coefficients. Based
on the detailed design of the drainage solution, the estimated run-off from the developed 81.5
acres south of Ms. Austin's property is 372 CFS. Based on the detailed analysis of the situation
and on the previous analogy used to arrive at the City's participation, the City's parfcipation
would be as follows:
Undeveloped Developed Barbara City's
Runoff Runoff Austin's Share
Share
187 CFS 372 CFS 50.3% 49.7%
Under this analysis, the City's share would be $129,220.00. Previously, on a consensus vote,
the City Council had authorized an amount not to exceed $110,000. The increase in the total
cost of the project and the increase in the proposed City's share is allocated to two areas: 1)
During the actual design and analysis of the drainage along this area, particularly in the channel
area, it was noted that discharging the water directly into the existing channel on the west side
of Moore Road could possibly create some drainage problems for the existing drainage structures
that outfall into the channel, most notably at the intersection of Stringfellow and Nixon. Upon
the evaluation of the hydraulics of the channel and the existing 3-60" RCP's that outfall into the
lake on the east side, it was determined that an additional pipe should be constructed beneath
Moore Road. Based on my calculations the additional pipe should be a 48' diameter RCP. The
estimated cost for the construction of the additional 48" RCP is in the range of approximately
$20,000. 2) The additional increase in the City's percentage share is also due to refining of the
run-off coefficient from the south side of Moore Road. The area of the school property and the
fire station property have a higher run-off coefficient than the residential areas. Based on the
above two factors, the cost of the project and the City's participation increased from the original
percentage concept presented to City Council.
This agenda item is brought forth to obtain approval to enter into a contract with the owner of
the property to participate in the cost of the drainage solution in a ~not to exceed" amount so
that Mrs. Austin can close on the property no later than June 25th, 1993. Prior to closing, she
has indicated that she needs a firm commitment on the City's participation in the drainage
soldtion.
Staff is seeking direction from the City Council on this issue and will be available to answer any
questions at the Council meeting.
MOORE ROAD DRAINAGE PROJECT DR 93-03
ITEM DESCRIPTION EST. OUANITY L.~IT TOTAL
I 66" RCP 1350 L.F. 120.00 162,000.00
2 6'x4' Box Culvert 166 L.F. 150.00 24,900.00
3 54" RCP 20 L.F. !00.00 2000.00
4 48" RCP 178 L.F. 80.00 14,240.00
5 30" RCP 6 L.F. 50.00 300.00
6 18" RCP 6 L.F. 40.00 240.00
7 I0' Inlet 2 EACH 2000.00 4000.00
8 Type 'C' Headwall 2 EACH 3000.00 6000.00
9 Channel Work for 48" RCP L.S. 5000.00 5000.00
10 Conn. 48" RCP to Headwall EACH 3000.00 3000.00
11 Conn. 6x4 Box to Channel EACH 3000.00 3000.00
12 Conn. 21" RCP to 48"RCP EACH 2000.00 2000.00
13 Rem. & Repl. Conc. Flume EACH 2000.00 2000.00
14 Rem. & Repl. Manhole EACH 5000.00 5000.00
15 Storm Sewer Manhole EACH 3000.00 3000.00
16 Cut & Plug 18" RCP 2 EACH 500.00 1000.00
17 Cut & Plug Sanitary Sewer 3 EACH 500.00 1500.00
18 Pavement Repair 1380 S.F. 4.00 5520.00
19 Regrade Borrow Ditch 300 C.Y. 10.00 3000.00
24 /, /UU.UI)
5% Contingencies 12,385.00
$ 200,Ol~.~.OO
TOTAL ESTLMATED COST $ 260.000.00
MEMO
To: Alan D. Ratliff. City Manager
From: Kenneth M. Griffin, P.E., City Engineer
RE: Barbara Austin Drainage Problem
Date: February 3, 1993
On February 2. 1993, I met with Barbara Austin, Bill Anderson, and George Gibson, the
potential developer of Ms. Austin's property, concerning drainage related issues. At the
meeting, I presented a quantifiable approach to determine the participation of both Ms. Austin
and the City in the solution to the ongoing drainage problem. Briefly, the drainage problem
relates to the development of property south of Ms. Austin's property over a period of the last
several years. The development increased the runoff due to street construction, rooftop
construction, and storm drainage construction. Ms. Austin previously stated that she did not
experience a problem with the drainage through her property until the property south of her
de~;'eloped.
The approach I took to address this issue was to look at what the drainage basin was south of
Ms. Austin's property prior to development. To determine that, I looked at the USGS
topography information flown in 1956 and field verified in 1959. That map shows that there
was approximately 65 acres south of Sandy Iake Road that drained through Ms. Austin's
property' at that point in time. There was also another 9 acres north of Sandy Lake Road that
drained through Ms. Austin's property. Therefore. a total of 74 acres of runoff drained through
Ms. Austin's property.
I then looked at the current drainage basin south of Ms. Austin's property. It appears as though
there is about 80 acres south of Sandy Lake Road that drains through Ms. Austin's property.
There is not any area north of Sandy Lake that drains through her property due to the
construction of Moore Road and Food Lion.
In analyzing these drainage basins, I considered the fact that in a developed state, the water
moves more quickly through the system and also there is a greater amount of runoff. Therefore,
the estimated current runoff from the developed 80 acres south of Ms. Austin's property is 345
cfs. The runoff to Ms. Austin's property, prior to development, was approximately 187 els.
If you consider that Ms. Austin's responsibility would be to handle all the runoff prior to the
development of the property south of her, then her participation in the cost would be 54.2%
(187/345). Conversely, the City's participation would be 45.8%.
Ms. Austin was not particularly pleased, but I got the feeling that she did understand how I
arrived at these percentages. I welcomed Ms. Austin's engineer to analyze the situation,
independent of my numbers, and to provide different percentages if he so chose. It is my
opinion that if they go that route, the percentages will be very. near what I have calculated.
I told Ms. Austin that there were three alternatives at this point in time: 1 .) accept the
percentages and move forward; 2.) reject the percentages; and 3.) provide an alternative way
to calculate the City's participation. I also explained to Ms. Austin that there was not a
$200,000 check waiting for her when this drainage solution was resolved. I explained that the
Council had only committed up to $200,000 for the solution.
Under the percentages that I have proposed, the City's share would be approximately $110,000
(.458 x $240,000). The $240,000 represents the estimated cost for the drainage system. If the
drainage is resolved at the time that Ms. Austin develops her property, then the City will benefit
not only from the resolution of the drainage, but also from the dedication of right-of-way and
the construction of the remainder of Moore Road. Currently, Moore Road has a jog both north
and south of Ms. Austin's property. The development of the property would remove the jog and
construct the same size street section as currently exists south of Sandy Iake Road.
Ms. Austin is faced with three items that need to be resolved. One is the zoning of her
property, two is the platting of the property, and three is the resolution of the City's
participation in the drainage solution. I indicated to Ms. Austin that quite possibly the approach
would be to proceed through City Council to arrive at some type of contractual agreement on
the City's part to participate in the drainage solution in a percentage of 45.8%, not to exceed
the $200,000 that the City has set aside. In essence, it would take a major catastrophe in the
construction of the project for the City's share to balloon to $200,000.
I would be happy to discuss this meeting and my findings with you at your convenience.
KMG/pn
austin.adr
REGULAR SESSION (Open to the Public)
4. Re. convene Regular Session
5. Invocation
Councilmember Stahly led those present in the invocation.
6. Pledge of Allegiance
Mayor Morton led those present in the Pledge of Allegiance.
7. Citizen's Appearance
A. Johnny Thompson, 1780 E. Beltline, commended Robert Hagar on a job well done.
8. Swearing-In-Ceremony of Lisa Ann Cavendar to the Cable Review Board.
Mayor Morton swo&in Lisa Ann Cavendar as a member of the Cable Review Board.
9. Consideration and approval of a Proclamation naming July 19, 1993 as Coppell Rotary
Club Appreciation Day, and authorizing the Mayor to sign.
Mayor Morton made comments and read the Proclamation. Mayor Morton then recognized
Kevin Foster and all members of the Rotary Club. Councilmember Reitman moved to approve
July 19th as Coppell Rotary Club Appreciation Da)'. Councilman Mayo seconded the motion;
the motion carried 6-0 with Mayor Pro Tern Robertson and Councilmembers Weaver, Stahly,
Reitman, Mayo, and Garrison voting in favor of the motion.
10. A. Reconsideration of authorizing the City Attorney to prepare a contract for the
City's participation in the drainage solution with the owner of the property at the
northeast corner of Moore and Sandy Lake at a "not to exceed" dollar amount to
be determined by City Council and authorizing the Mayor to sign.
Councilmember Weaver moved to reconsider authorizing the City Attorney to prepare a contract
for the City's participation in the drainage solution with the owner of the property at the
northeast corner of Moore and Sandy Lake at a "not to exceed' dollar amount to be determined
by City Council. Councilmember Mayo seconded the motion; the motion carried 6-0 with
Mayor Pro Tern Robertson and Councilmembers Weaver, Stably, Reitman, Mayo, and Garrison
voting in favor of the motion.
B. Discussion and consideration of allocating funds set aside in the Fiscal Year
1992/93 budget for drainage and roadway improvements to participate in the
drainage solution at the intersection of Moore Road and Sandy Lake Road and
authorizing the City Attorney to prepare a contract for the City's participation in
the drainage solution with the owner of the property at the northeast corner of
Moore and Sandy Lake at a "not to exceed" dollar amount to be determined by
City Council and authorizing the Mayor to sign.
Councilmember Weaver questioned Ken Griffin, City Engineer, regarding the city's portion for
drainage and roadway improvements. Mr. Griffin stated that the City's portion would be
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$130,000.00. This is approximately 50-50 share of total cost. Councilmember Weaver moved
to participate in an amount not to exceed $130,000.00 with the adjacent property owner for
improvements made on the Moore Road and Sandy Lake intersection. Councilmember
Robertson seconded the motion; the motion carried 6-0 with Mayor Pro Tem Robertson and
Councilmembers Weaver, Stahly, Reitman, Mayo, and Garrison voting in favor of the motion.
The Consent Agenda Items 22 A, C, D, E, F, G, H, I, K, L, M and N were considered at this
time. See Item 22 for minutes.
11. Public Hearing: Consideration of approval of the annexation of 127 acres of L.B.J.
Freeway from Beltiine Road to approximately Cotton Road and authorizing the Mayor
to sign.
Gary Sieb, Director of Planning and Community Services, made a presentation to the Council.
Mayor Morton opened the Public Heating and asked for those persons wishing to speak in favor
of this proposal. There were none. He then asked for those persons wishing to speak in
opposition to this proposal. Again, there were none. Mayor Morton then closed the Public
Hearing. Mayor Morton commented that this action was initiated by Commissioner Jim
Jackson. No further action was required on this item.
At this time Mayor Morton announced that the City of Coppell has entered into a music
exchange with a group of German students. The Mayor recognized the 21 German students and
their mentor Gina Alexander and Ron Pankey. Ms. Alexander announced that there would be
a free concert at the middle school on Friday night. The director of the Art School from
Germany thanked all the families for their support. A letter was presented to the City of
Coppell from the Mayor of Ibbenbiiren and Mayor Morton presented a proclamation from Dallas
County.
12. Public Hearing: Consider approval of a replat of St. Ann Catholic Church Addition,
to allow the expansion of the original plat, located at the northeast corner of Sandy Lake
Road and Samuel Boulevard, at the request of Nathan Maier Engineering.
Gary Sieb, Director of Planning and Community Services, made a presentation to the Council.
Mr. Sieb stated that the lack of affirmative action by P & Z within 30 days has resulted in this
replat coming forward to Council. Mike Daniels, representing the Applicant, also made a
presentation. Applicant asked for a variance to postpone the construction of the sidewalk.
Councilmember Stahly stated that she is a member of St. Ann's and also on the board of the
Coppell YMCA. She also clarified for the Council that she had no conflict of interest.
Discussion was held by Council regarding landscape issue, right-of-way issue on Sandy Lake
and sidewalk issue. Mayor Morton opened the Public Heating and asked for those persons
wishing to speak in favor of this proposal. David Baine, 721 Bethel School Road, stated he is
a founding member of St. Ann's parish and that the matter before the Council is not a rezooing
issue, but rather a redefining of the property. Father Kilian Broderick, 129 Lansdowne,
addressed the Council concerning his support of this issue. Mayor Morton then asked for those
persons wishing to speak in opposition of this proposal. There were none. Mayor Morton then
closed the Public Hearing. Mayor Morton opened Executive Session at this time.
EXECUTI%:E SESSION (Closed to the Public)
A. Article 6252-17, Section 2(e), and Senate Concurrent Resolution Number 83,
discussion with City Attorney concerning matter involving privileged
communications between attorney and client. Mayor Morton convened into
Executive Session at 8:37 p.m. as allowed under the above-stated article. Mayor
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