1987-02-17 CC Packet AFFIDAVIT OF INTEREST
•
THE STATE OF TEXAS •
COUNTY OF TARRANT
CITY OF SOUTHLAKE
•
BEFORE ME, the undersigned authority, and for s id
State of Texas, on this day personally appeared G' -f�.: �. .
who after being by me duly sworn, did on oath State that he as an
interest, as described below, in Agenda Item No. _. . . of the _J,._.J .._ . ,
1987. , City Council Agenda, as described below, and that he
37 executing this Affidavit of .Interest and shall refrain from any
vote or decision thereon, all as required by Article 988b, Texas
Civil Statutes Annotated:
•
Interest Disclosed: . . ..
_ z . Y7/..' _ -
a
. Si - ur of Elected or Appointed
City Official of the City of South-
- lake, Texas .
GIVFsN� DER MY HAND AND SEAIIOF OFFICE this the _ .. _- / 7 .. . _ . . .. day of
r �t.' �L , 19
•
NOTARY PUBLIC STATE OF TEXAS
MY COMMISSION EXPIRES: 2-4-89
Filed with me, this the .. .. _ _./. _7 .. ._ ._ ._ _day of A, 27 . , 19 1.7 at
7 .. __ .: _ _ ... o'clock p.m.
i1 . .,./.,4 „,e__}.. _ . . ..
(ash City Secretary, City. of Southlake ,.
.(
City of Southlake
.. INTEROFFICE MEMORANDUM
I
DATE: • February 10 ,1987
TO: Task Force Members : gill LeGr.nd, James Wooll ,
James Arnold, Pam M , . ler a) ) oha Pa, ne
FROM: Mayor, Lloyd Vita Jr .
SUBJECT: Appointment od Task orce
I would like o . nounc th pointment of ask Force to study
the city' s n. requirem s f' t' . ext five years and to submit
a report ;o t.e council tailin t needs of the city. The report
s ould id:lt fy land size , genel ocati (not specific sites) and
i ttiende. us - . Th: listing sho4d\be pri . itized to reflect require-
me t. sty) nearest -rm thr\ five y r period. Requirements
ad.re A d should i lude but of limi d to :
Elev: e• Water St g e Sit
2. Secon. . -y Fire Station/s .
'3 City H: 11/ Administration.
A ) Po - Faciliti-s in�u ing Loc Det nJ io cilities .
5) Par and PI/a,: ounds .
6) P o is Wor s : ciliti s and ds .
Members of e Task�toice will be :
B . 1 eGrand, 1Ohair 'er n
Ja ooll
Jam Arnol.
m Mul- er
Aloha Pay e
The committee iti•uld c so as eve a preliminary report ready
for council review and . scus i n /A 15 March. All City Department
Heads are requested to coopera i the fullest with this task force
and assist them in the accompli /11
ent of the assigned task . .
I
May , flop 0. atlta Jr .
c. c . City Secretary, Sandy LeGrand
City Administrator , Larry Munsie
All Department ,Heads
City Councilpersons
. . . .
_____
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-.-,-- . City of Southlake . _
..,,, INTEROFFICE MEMORANDUM
DATE: February 10 , 1987 , 3 : 00 p .m. City Council Chambers
TO: Mayor and City Council
FROM: Bill LeGrand
SUBJECT: Bid Opening in Hydraulic Excavating Machin // \e °
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/ / )
/ ' / • '/U
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Time was called; the qI€1 st o was sked B �1 )LeGrand
if any one had a bid ho be/ turnOin f the ydraulic
i
Excavating Machine . No fone�� e ponde .
•
Acceptance of Jb s wa's c10d. B 11 ,eG and reportA
that no bids d bees jcelived -icy mail or delive ed i
person. ;/ r i V
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. )j'Y . a/
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1
NIUIN 1 n January 13 b /
CITY OF SOUTHLAKE
BUILDING DEPARTMENT MONTHLY REPORT
PERMITS ISSUED: TOTAL AMOUNT TOTAL AMOUNT
THIS MO . OF FEE LAST MO. OF FEE
a
Single Family -0 - -0- 5 3 , 596 . 50
Commercial Add-on -0- -0- ' -0- -0-
Commercial 1 514 . 00 1 382 . 00
Additions/Accessory Bldg . 1 52 . 00 4 870 .00
Swimming Pools 1 117 . 00 2 342 . 00
Misc . Sales 51 148 . 00
Sub--Contractors : Electric 7 474 . 30 6 686 . 45
Plumbing 7 356 . 50 10 934 . 75
Heat/Air 6 400 . 50 4 216 . 00
Septic 5 300 . 00 4 225 . 00
Culvert 1 65 . 00 2 130 . 00
Signs 1 65 . 00 2 317 . 00
Other Fees 23 317 . 00 24 686 . 80
TOTAL 104 2 , 809 . 30 64 8 , 386 . 50
BUILDING DEPOSITS TO DATE THIS YEAR: 2 , 809 . 30
************w**************T'1F:r:e:F***********:Fir****k:4**'k:F'kT—**:F k*k#'k**—
IMPACT FEES : TOTAL AMOUNT TOTAL AMOUNT
THIS MO . OF FEE LAST MC . OF FEE
Road Impact 1 2 , 300 . 00 5 5 ,000 . 00
Year to Date Road Fees (CY,87) 2 , 300 . 00
Sewer Impact 3 1 , 500 . 00 3 1, 500 . 00
Year to Date Sewer Fees (CY, 87) 1 , 500 . 00
*****************, ********************************'***********.A ***********
BUILDING VALUATION THIS MONTH YEAR TO DATE
Single Family -0- -0-
Commercial Add/on -0- . -0-
Commercial 71 , 000 . 00 71 , 000 . 00
Additions/Accessory Bldg. 2 , 500 . 00 2 ,500 . 00
Swimming Pools 10 ,000 . 00 10 ,000 . 00
TOTAL 83, 500 , 00 83 ,500 . 00
1
NUMBER OF INSPECTIONS: This Month 193 Last Month275
Submitted by: / 3)iiAll4A() &eret
Building Clerk
1
yGOS LtU. 1VL:iL
+ 5 NEW TAPSG�
1933
- 1 PULLED METER
1932 JAN. TOTAL
WATER DEPARTMENT REPORT
MONTH JANUARY 1987
GALLONS PUMPED THIS MONTH FROM WELLS 0
PURCHASED FROM FORT WORTH 19 ,121 ,500
TOTAL PUMPED AND PURCHASED 19 ,121 ,500
NEW WATER TAPS INSTALLED 0
FIRE HYDRANTS INSTALLED 0
METER CHANGE OUTS 3/4"= 26 1"= 12
3/4" to 1''= 0 2"= 0 4"= 0
LEAKS 7
PULLED METERS 1
LOCKED METERS 22
Customer request or Delinquent Payment
PROCESSED WORK ORDERS 132
FLUSHED LINES N.PEYTONVILLE , S.KIMBALL, RIDGEWO
CIRCLE, N.CARROLL
WATER IMPACT FEES '$2 ,500 . 00 TOTAL TODATE $13 ,500.00
C22
WATER SUPERINTENDENT
MONTHLY REPORT SEND REPORT TO: TEXAS DEPARTMENT OF HEALTH
DIVISION OF WATER HYGIENE
WATER WORKS OPERATION FOR 1100 WEST 49th STREET
AUSTIN,TEXAS 78756
GROUND WATER SUPPLIES
(1) Name of System CITY OF SOUTHLAKE County TARRANT
(la) Water System I.D. No. 2200075 Month of JANUARY 19 87
Day Pumpage to Distribution System in Thousand Gale. (6) (7) (8) Taste (9)
of (2)Direct I (3)From Gnd. (4)Purchased (5)Total Disinfection Corrosion and Odor
{ Month from Wells Storage from Others Pumpage Control Control
1 0 724.0 724.0
2 0 664.0 664.0
i 3 0 668.0 668.0
° 0 553.0 553.0
- 5 n 572.0 573.0
6 0 608.0 608.0
7 0 587.0 587.0
8 0 569.0 569.0
9 0 611.0 611.0
to 0 890.0 890.0
11 0 511.0 511.0
12 0 677.0 677.0
13 0 600.0 600.0
14 0 610.5 610.5 I
is 0 628.5 628.5
16 0 658.0 658.0
• 17 0
0 658.0 658.0
18 354.0 354.0
t9 0 592.0 592.0 •
20 n 596.5 596.5 SAMPLES-NEGATIVE
21 0 597.0 597.0 1
• _ 22 0 599.0 599.0
! 23 0 857.0 857.0
24 0 444.0 444.0
- 25_ 0 546.Q 546.0
26 0 592.0 592.0
27 0 589.0 589.0
28 0 676.0 676.0
i 29 0 627.0 627.0
30 0 735.0 735.0
31 0 527.0 527.0
Total n 19,121.E 19,121.5
Avg. 0 616.82 616.82
Max. 890.0 890.0
Min. 354.0 354.0
No. of Active Water Services (10) 1932 -- Chemical Analysis (11) 11-83
Dates and Results of Bacteriological Analyses (12) 7 SAMPLES
N.PEYTONVILLE,.
Reservoirs or Tanks Cleaned (13) 6-83 Dead Ends Flushed (14)S.KIMBALL, "RIDGEWOO]
N.CARROLL, CIRCLE
10: General Remarks (15)
Submitted By (16)./Atc Certificate No. (17) - 454-29-3113
' FORM NO. H-3
MONTHLY POLICE REPORT
T AN I I a R Y 1 q R7 PRESENT PAST YEAR TO
MONTH `4 NTH DATE
TOTAL RADIO CALLS 2370 _ 1680 2370
ACCIDENTS INVESTIGATED 12 34 ' 12 Major Accidents (Involving Injury) 3 , 16 3 I
Minor Accidents (Property Damage Only) 9 18 9
TOTAL WARRANTS 114
. _ 107 114
Total Warrants Served I 46 34 46 f
Total Amount Collected
, $5 . 503 $4 ,640 $5 , 503
TOTAL ARRESTS 87 8 3 _ • 87 I
Felony Arrests 8 1 15 8
• Misdemeanor Arrests 70 67 70 l
Juvenile Arrests g 1 g
TOTAL CASES FIT.FT) 8 14 8 f
Felony 6 9 6 I
Misdemeanor 1 4 1
Juvenile Referrals 3 1
TOTAL CITATIONS ISSUED 714 493 714 I.
1
TOTAL OFFENSES REPOREL) 40 34 40
TOTAL OH±NSES CLEARED 8 19 8 I
CLEARANCE RATE 20% 51% 2 0 0
BURGLARIES REPORTED 12 9 12
Value - Stolen Property _$,21,3 9 5`511 , 7 8 8 S21 ,395 tt
1
Value - Recovered Property $3 8 , 12 5 $ 4 ,385 $3 8 , 12 5
THEFTS REPORTED 7 , • 2 7 ' I
Value - Stolen Property $21 , 16 0 5 -4 , 12 S $21 ,16 0
Value - Recovered Property - $3 0 ,810 $ 8 , 80( $3 0 ,810
CRIME PREVENTION PRESENTATIONS 0 . 0 0
. ... . --. ... ... _. . . . . . 1
y of Southiake
` INTEROFFICE MEMORANDUM
DATE: February 17 , 1987
TO: Mayor and City Councilmen
FROM: Bill LeGrand
SUBJECT. Lucky Lady Convenience Store
A review of the Lucky Lady sign application has been
completed. The requirements of ordinance 350 have •
been satisfied in all cases except as regards to fuel
type and price signs .
411 The application has two options available for fuel price •
and fuel type signs . In either case the fuel price
signage may equal sixteen square feet and the fuel type
may equal six square feet . This equals equivilant signs
allowed of twenty two square feet double faced on each
street side of the store , or a total of eighty eight
square feet of fuel type and price signage .
I recommened the signs requested in this application be
approved. I futher recommend that the fuel price and type
be mounted on the canopy at the size and location requested
as opposed to mounting two signs on the canopy supports .
111
1
City of Sou hl e •
INTEROFFICE MEMORANDUM
DATE: February 17 , 1987
TO: Mayor and City Councilmen
FROM: Bill LeGrand
SUBJECT : Lucky Lady Convenience Store
rr
A review of the Lucky Lady sign application has been
completed. The requirements of ordinance 350 have
been satisfied in all cases except as regards to fuel
type and price signs .
The application has two options available for fuel price
and fuel type signs . In either case the fuel price
signage may equal sixteen square feet and the fuel type
may equal six square feet . This equals equivilant signs
allowed of twenty two square feet double faced on. each
street side of the store , or a total of eighty eight
square feet of fuel type and price signage .
I recommened the signs requested in this application be
approved. I futher recommend that the fuel price and type
be mounted on the canopy at the size and location requested
as opposed to mounting two signs on the canopy supports .
. ,
i � \
'(,' Cityof Southiake
• INTEROFFICE MEMORANDUM
•
DATE: February 17 , 1987
TO: Mayor and City Councilmen
FROM: Bill LeGrand
' SUBJECT: Lucky Lady Convenience Store
•
A review of the Lucky Lady sign application has been
completed. The requirements of ordinance 350 have
been satisfied in all cases except as regards to fuel
type and price signs .
• The application has two options available for fuel price
and fuel type signs . In either case the fuel price
signage may equal sixteen square feet and the fuel type
may equal six square feet . This equals equivilant signs
allowed of twenty two square feet double faced on each
street side of the store , or a total of eighty eight
square feet of fuel type and price signage .
I recommened the signs requested in this application be
approved. I futher recommend that the fuel price and type
be mounted on the canopy at the size and location requested
as opposed to mounting two signs on the canopy supports .
. • •_ _
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• CHEATHAM
AND
ASSOCIATES
PROPOSAL TO
THE CITY OF SOUTHLAKE
FOR
WATER SYSTEM PLAN
SANITARY SEWER SYSTEM PLAN
& VERTICAL CONTROL
JANUARY, 1987
• ENGINEERS PLANNERS o SURVEYORS
A Subsidiary Firm of Southwest Planning and esign, Inc.
Lamar East, Suite 212 1601 East Lamar Arlington, Texas 76011
817/460.2111 Metro 265-7948
■
CHEATHAM
AND
ASSOCIATES
February 16 , 1987
Mayor Lloyd O. Latta, Jr.
City of Southlake
P.O. 868
Southlake, Texas
Subject: Proposal Amendment
You asked that you be provided with cost information for
performing additional services in connection with the recently
submitted proposal.
The additional service to be considered is establishing
horizontal control for the monuments to be erected in connection
with establishing a vertical control grid.
411 We would establish coordinate data for each monument based on the
Texas plane coordinate system. This coordinate data would be
published in the document that also will describe the location
and vertical elevation of the monuments. This additional service
can be performed at our standard hourly rate ( $65.00 for a three
man survey crew) , the total not to exceed $15 ,000 without
specific authorization.
Please do not hesitate to call should you wish to discuss this
amendment.
Eddie Cheatham, P.E.
Principal
ENGINEERS •PLANNERS • SURVEYORS
A Subsidiary Firm of Southwest Planning and Design, Inc.
Lamar East, Suite 212 • 1601 East Lamar • Arlington, Texas 76011
817/460-2111 • Metro 265-7948
1
CHEATHAM
AND
ASSOCIATES
February 16, 1987
Mayor Lloyd O. Latta, Jr.
City of Southlake
P.O. 868
Southlake, Texas
Subject: Proposal Amendment
You asked that you be provided with cost information for
performing additional services in connection with the recently
submitted proposal.
The additional service to be considered is establishing
horizontal control for the monuments to be erected in connection
with establishing a vertical control grid.
We would establish coordinate data for each monument based on the
Texas plane coordinate system. This coordinate data would be
published in the document that also will describe the location
and vertical elevation of the monuments. This additional service
can be performed at our standard hourly rate ($65.00 for a three
man survey crew) , the total not to exceed $15 ,000 without
specific authorization.
Please do not hesitate to call should you wish to discuss this
amendment.
Eddie Cheatham, P.E.
Principal
•
,
ENGINEERS •PLANNERS • SURVEYORS
A Subsidiary Firm of Southwest Planning and Design, Inc.
Lamar East, Suite 212 • 1601 East Lamar • Arlington, Texas 76011
817/460-2111 • Metro 265-7948
• CHEATHAM
AND
ASSOCIATES
January 29, 1987
Mayor and City Council
City of Southlake
P.O. 868
Southlake, Texas 96092
This letter transmits to you an amended proposal for services in
response to your request. The amended proposal is for the
preparation of an overall sanitary sewage system plan schematic,
basic water system analysis and establishment of a vertical
control grid for the city. This amended proposal modifies and
supersedes a similar proposal dated September, 1986. The
proposed level of detail has been reduced, as well as the cost.
Items deleted will be eventually necessary, but may be
temporarily delayed. An example of omitted items are obtaining
state approval of the water system, detailed estimate of system
costs and financial analysis.
The city has committed to participation in the construction
of the Big Bear Creek interceptor by the Trinity River Authority.
Thus, the proposed services are necessary and appropriate because
of impending demands for basic utility information by the city
and developers in the city. It is appropriate that this study be
initiated by the city in order to begin establishing standards
for utility systems owned by the city.
You will be briefed on the contents of the proposal at your
convenience. We will contact you to determine when would be an
appropriate time for such a briefing. In the meantime, please do
not hesitate to call should you have •any questions or comments.
Eddie Cheatham, P.E.
Principal
•
ENGINEERS• PLANNERS•SURVEYORS
A Subsidiary Firm of Southwest Planning and Design, Inc.
Lamar East, Suite 212 • 1601 East Lamar • Arlington, Texas 76011
817/460-2111 • Metro 265-7948
411
table of contents
SUMMARY
Sanitary Sewer 1
Water 4
Control 5
SCOPE OF SERVICES 6
METHODOLOGY
Sanitary Sewer:
Analysis of Study Area 12
Population Projections 14
Wastewater System Dev 15
System Planning 18
Water System Analysis:
Historical Use 21
Anticipated Growth 21
Projected Requirements 22
1011 Hydraulic Analysis 22
Pressure Plane Analysis 24
Storage Requirements 24
Alternative Supply 25
SYSTEM DESCRIPTION FOR WATER & SEWER 26
FEES 27
SCHEDULES - TERMS 29
GUARANTEE 30
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1
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1
• SUMMARY
Sanitary Sewer:
The Southlake City Council has established a
policy that will, in effect, allow and
mandate the construction and use of sanitary
sewage collection facilities within the
city.
This step was taken because of potentially
unsanitary conditions resulting from over-use
of septic tanks in soils of marginal suita-
bility for that use. The construction and
101/ use of sewage collection systems, along with
some means of final disposition of the
sewage, will correct some existing defic-
iencies and prevent others.
An initial step in the establishment of a
sewage collection and treatment or dis-
` position system is the development of an
overall plan for the system. The basic
purposes of the plan are to determine the
size and approximate location for the various
collection lines and other facilities; and to
` ' address any unique problems that may exist.
1, 1
The development of even a schematic plan must
take into consideration:
-Present and Future population (by
number and location)
-Topography
-Plans by others [regionalization]
A plan for the construction of a sewerage
system is similar in purpose to the plan for
the construction of a building. Both
show the materials to be used, the relation-
ship of all elements and the sequence
Nof construction.
Although the construction of a sewerage
system will take place over several years and
will be built by several parties, an overall
guide to the establishment of the system is
essential. Without such a guide, a consider- I
able waste of citizens time and money can be
expected.
I
2
I
The City will be the agency responsible for
insuring that the construction of its
elements of the system will be in accordance
with the adopted plan and in a timely
manner. The operation and maintenance of the
system within its jurisdiction will be an
ongoing responsibility. It is therefore
appropriate that the city be the agency
developing the sewerage system development
plan for which it will be principally
responsible.
3
Water:
The City has a number of problems with the
existing water system, which mainly center
around inadequate water pressure in areas of
town of high elevation. There are several
factors which contribute to this problem such
as insufficient distribution due to small
(4" ) lines in the system, and, some parts of
the system are not adequately looped.
We are proposing that a detailed hydraulic
analysis be prepared for the existing and
future water system. From this analysis we
will determine and make recommendations as to
the line sizes and locations for serving the
future needs of the City.
Also, we will project the future water
requirements. Alternative sources of supply
will be explored and recommendations will be
made for future action. Comments will also
be made as to storage requirements as
determined by previously developed
information.
111,
Ama
1
SCOPE OF SERVICES
The City of Southlake will be furnished
schematic plans for proposed water and
sanitary sewerage systems. The planned
sanitary sewer system will be based on the
assumption that all areas in the city will be
eventually served by the system.
The sewer plan will depict sewer mains,
outfalls, interceptors, lift stations and
force mains.
The water plan will indicate mains, looping,
INNI line sizes, projected flows, storage and
pumping facilites, and system pressure to
assure adequate service to the entire city.
A written guide containing recommendations
for basic water and sewer system construction
will be provided. Maps depicting the
proposed systems will be furnished for
both the water and sewer systems. [500
copies] The reverse side of the map will
contain the written guide.
6
1
Horizontal and Vertical Control Data:
Reasonably accurate vertical control
(elevation relative to mean sea level based
on established datum) must be established on
permanent monuments throughout the city.
This is an absolute prerequisite to the city
or anyone else developing detailed sanitary
sewage system plans. This data or
information does not currently exist. It is
proposed that at least vertical control be
established using an accepted common datum
(USCGS) . This is necessary to preclude
serious design and construction problems as
the system develops.
5
Southlake Control:
Vertical Control:
A grid of vertical control will be
established throughout the city limits of
Southlake. The grid will be on about 1 mile
N/S - E/W spacing,, with a control at all
major intersections. This will consist of
about 32 individual control points.
Permanent concrete monuments will be set at
each control point. These will be 10" 12"
diameter holes, 3 ' - 4 ' deep, concrete
filled, with engraved brass marker affixed.
It is recommended that we furnish the brass
monument and mark all locations for the
monument installation. City forces could
auger the hole, fill it with concrete and set
the monument marker. We will then "shoot in"
the monument and stamp the elevation on the
monument. The actual construction of the
monuments by City forces would save
considerable funds.
7
M
The control point elevations will be based on
a combination of existing U.S. Coast and
Geodedic benchmarks and State Department
of Highways and Public Transportation
benchmarks. Ostensibly, the latter being on
the same datum as the USCGS datum. However,
it can be anticipated that there will be some
slight (+/- 0 .10 ' ) disagreement between these
existing benchmarks . All existing benchmarks
will be listed at their "corrected"
elevation.
A brochure will be produced listing all of
the control points, their elevation and a
detailed description of the control points
physical location. Included will be a map
showing the general location of each of the
control points. [50 copies will be
furnished. ]
The SDHPT benchmarks along FM 1709 & SH 114
will be listed with elevations on a
consistent datum.
11,
8
1
[All private developers will be required to
use this established datum - which will be
within 0.10 ' +/- of "standard" USCGS datum. ]
Horizontal Control:
Establishing accurate horizontal control
based on the Texas Co-ordinate System is not
a great technical problem, but would involve
a rather substantial surveying effort to
establish horizontal control for the points
in the grid system.
The Texas Co-ordinate System, North Zone, is
a lambert conformal projection of the Clarke
spheroid of 1866 , having standard parallels
at north latitude of 34 degrees 39 minutes
and 11 seconds, along which parallels the
scale shall be exact. The origin of
co-ordinates is at the intersection of the
meridian 101 degrees 30 minutes west
longitude and the parallel 34 degrees 00
minutes north latitude. This origin is given
the co-ordinates x = 2,000 ,000 feet (720 ,000
varas) and y = 0 feet (0 varas) .
9
1111,
Establishing Texas Co-ordinate system
horizontal control for all of the points in
the grid system based will certainly be
useful at some point in the future. However,
its value to the city at this point in time
is questionable.
There is a current municipal necessity for
the vertical control -- that is the planning
of a sewage collection system. No such
need exists for the horizontal control at
this time.
[If the city is considering the purchase of a
main frame computer based interactive
graphics system for various purposes, the
city may wish to require all new plats to
have boundary references to the co-ordinate
system. This would establish the system in
the city, at no direct cost to the
municipality. Other portions could be
added as the necessity arose. ]
10
We recommend that the matter of horizontal
control be held in abeyance pending further
analysis of need and when that need will
occur.
11
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I.
METHODOLOGY
The following discusses the methods to be
used in developing the proposed sewerage
system plan, analyzing the water system and
establishing the vertical control. A
written report describing the methodological
machinations will not be produced.
I. SANITARY SEWERAGE SYSTEM
ANALYSIS OF THE STUDY AREA
Topography:
The topography of the city will be analyzsed
to determine how it will affect the planning
for the proposed system. Essentially this
will consider the Big Bear Creek watershed
(southern portion of the city) as having the
advantage of being able to be served with a
totally gravity flow based system (assuming
no unforeseen topographical or other pecul-
iarities) .
111
12
Also analyzed will be northern portion within
the Denton Creek watershed which will require
other diversion pumping or treatment after
gravity. collection.
Design Criteria:
The planning for the system will be based on
current engineering practice and will conform
to the requirements and criteria of the State
Department of Health, the Texas Water
Commission, the Environmental Protection
Agency and other applicable agencies.
Analysis of Major Drainage Areas/
Population Projections - Land Use - Annex-
ation:
The analysis will examine land use,
population and annexation trends and possib-
ilities. Information developed here may also
have applicability to the water system
analysis.
13
POPULATION PROJECTIONS - LAND USE
The result of this analysis will be to
develop population figures for the various
areas of the city to be served by the
system.
The Trinity River Authority Big Bear Creek
Interceptor study makes broad assumptions
regarding population. These assumptions are
suitable for sizing of the interceptor, but
more specific and detailed population data
must be developed for sizing laterals,
submains , mains and outfalls.
•
The anticipated land use of the city will be
taken into consideration in sizing the
facilities. Therefore, the location of the
future growth will be considered in the
system planning.
Information developed here will have
applicability in the water system analysis
section.
14
1
WASTEWATER SYSTEM DEVELOPMENT
Projected Development:
Residential and other types of development
will be estimated. These levels of develop-
ment will be used to generate estimates of
total residential and non-residential
wastewater flow.
Domestic Flow:
The residential population component is by
far the largest contributor to the total
wastewater flow. Residential flow is based
on estimates of population and trends in
"return flow." (That is the proportion of
potable water that is "returned" ; i.e. total
domestic water use minus that used for lawn
watering, swimming pools, livestock watering
and other uses that do not contribute to
wastewater flows. ) Although Southlake
demonstrates unusually high., per connection
and per person potable water use rates, the
return flows are probably not proportionately
, high due to the high rates of lawn watering,
etc.
15
But this issue will have to be carefully
examined to develop reasonable rates of
return flow for domestic connections.
Commercial and Industrial Flow:
Estimates will be made of commercial and
industrial development based on future land
use plans and regional trends.
Rates of flow based on types , density and
total amounts of development will be esti-
mated. These amounts are normally a rela-
tively small percentage of the total flow.
Infiltration and Inflow:
Infiltration is groundwater entering sewerage
systems or pipes through cracks in pipes and
manholes as well as defective joints. In new
sewerage systems, this amount of unwanted
flow can be held to a minimum. Inflow is
stormwater or other extraneous water entering
pipes through large openings, such as
submerged open manholes. Sewer design,
maintenance and operations can limit this
amount of unwanted water.
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Estimates need to be made as to how much
inflow and infiltration can be expected
throughout the system.
Total Projected Flow:
High and low ranges of total (combination of
all of the above) projected flows will be
developed. The projected flows will be
calculated for each drainage area to be
served by a lateral or other direct system
connection.
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SYSTEM PLANNING FOR MAJOR DRAINAGE AREAS AND
EXAMINATION OF •ALTERNATI.VES
The system proposed will be the result of
combining required state and federal criteria
with good engineering practice fitted to the
topographic conditions of the area and
projected flows. Construction and oper-
ational costs will be an important consider-
ation added to the technical aspects of
system planning.
a) Southern Portion - Big Bear Creek Sub-
watershed:
Planning for the southern portion of the city
will be based on the ability to discharge
into the TRA interceptor running along
and near Big Bear Creek. Systems of out-
1
falls, mains,, submains and laterals extending
to the north to the watershed divide will be
sized to serve this portion of the city.
Lines will be sized according to the flows
estimated for these sub-basins. Engi-
neering principles and general topography
will dictate the routing of the lines.
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Regardless of the outcome of that decision,
the system which will be developed in this
proposed effort will work in conjunction with
either a treatment plant or a lift station on
the north side of the city.
OFF-SITE SYSTEM DESIGN
A standard municipal practice is that the
city or the city' s consultant designs
required off-site utilities serving new
development. Funds for the cost of design
and subsequent construction are collected
through escrow agreements with developers .
This prevents a proliferation of different
designs, contractors and associated
problems. It is better assurance that the
main framework of the system(s) is designed
and built with the city' s interests being the
primary concern. Thus, it is recommended
that the city follow this well accepted and
established municipal practice.
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Where it is clear that other criteria might
prevail, suitable alternative routes will be
selected.
b) Northern Portion - Denton Creek Water-
shed:
A system of laterals, submains, and mains
will be shown collecting sub-basin flows and
discharging into an outfall paralleling
the Lake Grapevine shoreline. Every effort
will be made to avoid the use of lift
stations along this outfall sewer, due to the
cost of operation and maintenance of lift .
stations.
Currently, the Trinity River Authority is
planning to construct this outfall. They
will then either treat the sewage at the end
of the outfall siting a wastewater treatment
plant adjacent to Lake Grapevine, or will
construct a lift station to pump over into
the Big Bear Creek watershed.
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1I WATER EYS
TEM-ANALYSrs
Records :111::::::
ater Use:
All avail records rds will be
' d and analyzed to determine tree
Water. consumption, trend in
The water consumption
will be compared to the number of connections
to correlate figures representing water use
per connection for the average day, maximum
day, and maximum hour usage. This data will
be used to determine future water consump-
tion. The demand versus time of day will be
analyzed to assist in sizing storage facili-
ties. These facilities will be used to
decrease the amount of water pumped from the
source during periods of high demand.
Anticipated Growth Patterns:
Based on the proposed future land use plan,
densities of population and industrial of
commercial development will be projected.
From this analysis a water system will be
developed which will supply the required
ilvolume and pressure of water to satisfy the
expected growth. This system will be sized
itft . '
for the ultimate expected growth.
ir '
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1
Projected Water Requirements:
Water requirements will be determined using
the previously made population project-
,
ions. This water requirement will take into
account the residential, commercial and
industrial water uses. The water require-
ments will be developed for 5, 10, 15 and 20.
year intervals and also for the ultimate
development of the city. The requirements
will be determined for the average day,
maximum day and maximum hour for each of the
time intervals.
Hydraulic Analysis of System:
The present system will be simulated on the
Prime main-frame computer and analyzed with a
hydraulic analysis process commonly known as
"Hardy -Cross Analysis." The process
Y
simulates the conditions of a water system in
operation. Flows are input into the system
and demands are placed upon.. the network which
relates to the actual water consumption of
the service area.
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The result is a description or output
from the computer of the resulting pressures
anywhere within the system which can be very
helpful in determining potential problem
areas.
The computer simulated system will be
modified to reflect various stages of system
expansion and an analysis will be made to .
determine which lines need upgrading and
when.
Probably the most helpful information to come
this analysis will be a system design which
will satisfy the anticipated growth and
ultimate population of the city. This will
be presented as a system map which will be
used to guide developers and the city staff
in future extensions and expansions to the
system. The system map will be most helpful
in the review of future development plans.
It will indicate water line sizes and
locations that can be coordinated with new
developments.
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I
Pressure Plane Analysis: I
Due to the extreme differences in elevations
across the city, some areas will naturally
have higher water pressure than others unless I
the city is divided into separate pressure
planes. A study will be made of the hy- I
draulic analysis of the system to determine
where division lines in the system could be
valved to separate the system into two or I
three pressure planes. Recommendations will
be made regarding the of pumping, valving and I
storage facilities to create an efficient
overall system which provides adequate water
pressure to the entire city. I
Storage Requirements : I
Based on the projected water requirements and
trends in consumption, water storage will be
studied. Storage requirements will be
presented which satisfy the State Health
Department, Fire Insurance Board and allow
for an efficient operation of the future
water system.
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As mentioned earlier, the demands of 5 , 10,
15 and 20 years will be projected as well as
the estimated ultimate water demand. In
conjunction with this, the storage
requirements of these time intervals will be
calculated and presented. Adequate storage
facilities can save considerably in the cost
of meeting the peak water demand periods from
storage rather than outright water purchase
to meet peak demands .
Alternative Water Supply Sources :
Currently the city has two sources of water
11111 supply, wells and the City of Fort Worth, via
the 20" transmission line recently construct-
ed. The well water quality is poor and
should not be considered a long term supply.
It would be very prudent to make provisions
for at least one additional source of
supply. Alternatives will be considered and
the potential of these will be determined.
Recommended action will be. suggested to
secure another source of water supply.
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I
SYSTEM DESCRIPTIONS FOR WATER AND SEWER
The description of the systems will be
basically graphic. The descriptions will
show the location and sizes proposed for all
lines . Locations and capacities of all
proposed major facilities, such as pumping
installations of water and sewer will be
described.
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FEES
The fees for performing the planning and
engineering work, writing the report and
performing the drafting will be an estimated
fee of $ 35,000 . [ $25 ,000 flat fee for water
and sewer products -- $10 ,000 estimated on
hourly fee basis for control project.
The fee is based on the time to be allotted
to the various technical tasks . The follow-
ing is the allotment of those times multi-
plied by the appropriate hourly rates.
Water System:
Principal 40 hr x $70 . 00 = $ 2,800 .00
Engineer
Registered 125 hr x 55.00 = 6 ,875 . 00
Engineer
Staff
Engineer 56 hr x 45.00 = 2,520 . 00
Technician 28 hr x 35 .00 = 980 . 00
Printing & Reproduction = 525 . 00
Subtotal Fee $ 13 ,700 .00
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Sanitary Sewage System:
Principal 36 hr x $70 .00 = $ 2,520 .00
Engineer
Registered 100 hr x 55 . 00 = 5 ,500 . 00
Engineer
Staff
Engineer 40 hr x 45. 00 = 1,800 .00
Technician 28 hr x 35. 00 = 980 .00
Printing and Reproduction = 500 .00
Subtotal Fee $ 11, 300 .00
Vertical Control:
The fee is primarily for "running"
an estimated 45 miles of levels .
Some engineering supervision will
be involved as well as some direct
costs for the monuments. All work
will be performed on an hourly
basis. Thus this cost is an
estimate, not to be exceeded
without explicit direction.
Estimate of Surveying Costs -
[Based on 153 hours of 3
man survey crew plus supervision
-- includes all instrument work
plus stamping and engraving of
markers . ] $ 10,000 .00
Total Fee $ 35,000 .00
Note: The $11,300 for the sanitary sewer
project and the $13 ,700 for the water project
are flat fees. The $10 ,000 for the vertical
control field work is an estimate of costs on
an hourly fee basis of $65 . 00/hour which
covers all costs including three salaries,
overhead, travel, etc. The actual amount
billed will depend upon the hours worked, and
will not exceed $10 ,000 .00 .
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a
SCHEDULES
We will complete a draft of the systems study
within 120 continuous, consecutive
calendar days and will request a scheduled
time to brief the Council and others. We
will make any modifications necessary and
will deliver the final system maps within 14
days, assuming no delays beyond our control.
TERMS,, CONDITIONS
Billing will be monthly, on a basis of
percentage of completion.
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GUARANTEE
Cheatham & Associates guarantee to maintain the fees presented
herein for 90 days from the date of this proposal unchanged. The
above fees include all incidental costs and expenses, including
all travel, out-of-pocket expenses, drafting, telephone, typing,
etc.
If the above meets with your approval, this proposal can also
serve as our agreement, which you may indicate by signing in the
appropriate space provided below and return a duly signed copy to
us.
Thank you for the opportunity to be of service, your time and
attention.
Eddie Cheatham, P.E.
Principal
Cheatham & Associates
Authorization to Proceed with Scope of Services as Outlined
Above:
Attest Date Lloyd O. Latta, Jr. Mayor
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