Northlake WE P1-6-AG 890808 ITEM CAPTION:
'~.~ Presentation and discussion of North Lake Woodlands East drainage area
concerns.
Consideration of authorizing the City Engineer to select and negotiate
an agreement for an engineering study of North Lake Woodlands East
drainage area - requested by Mayor Wolfe
(l):L~;ector v's; ~iSnature)
A%a~,Ratliff.,._CM
Russ Doyle, CE'~
F
A~T. ~-S'TIHATED:
AHT, +t- BUDGET:
0588D~
ALBERT H. HALFF ASSOCIATES', INC.
ENGINEERS · SCIENTISTS · SURVEYORS
DALLAS · ARLINGTON · CHICAGO · FORT WORTH
8616 NORTHWEST PLAZA DRIVE · DALLAS, TEXAS 75225
214/739-0094
July 31, 1989
P.1008.89.2458
Mr. Russell Doyle, P.E.
City Engineer
City of Coppell
255 Parkway Blvd.
Coppell, Texas 75019
Re: Northlake Woodlands East, Drainage Study - Phase I
Dear Russell:
We are pleased to submit this proposal for special hydraulic studies to evaluate
existing flood plain and erosion problems of streams draining the Northlake Woodlands
East area in Coppell, Texas (see attached map). The problems include the following:
1)
2)
3)
4)
5)
6)
7)
Erosion just downstream of Moore Road
Erosion just upstream of Bethel School Road
Erosion at drainage flume from Villa Wood Lane
General shallow ponding along the stream
General poor water quality along the stream
Stream channel and overbank maintenance
Other stream or drainage problems that arise during the study as a result of
the reconnaissance or citizen input.
The following scope of work is necessary to develop solutions to the above
problems. Estimated budgets are also shown.
TASK
ESTIMATED BUDGET
A. Data Collection $251
B. Stream Cross Section Surveys 1,030
C. Field Reconnaissance 604
D. Hydrology 1,504
E. Hydraulics 1,769
TRANSPORTATION
WATER RESOURCES · LAND DEVELOPMENT
SURVEYING · GLOBAL POSITIONING SYSTEM (GP.S,)
LANDSCAPE ARCHITECTURE
MUNICIPAL · ENVIRONMENTAL
· REMOTE SENSING AND MAPPING
PLANNING
· STRUCTURAL
ALBERT H. HALFF ASSOCIATES, INC.
ENGINEERS · SCIENTISTS · SURVEYORS
City of Coppell
July 31, 1989
Page 2
TASK
ESTIMATED BUDGET
F. Alternative Solutions 3,070
G. Report/Presentations 2,443
The above tasks constituted Phase I of the drainage study. At the end of Phase I,
solutions to drainage problems will be recommended. Phase II will consist of the detailed
design effort, including design and easement location surveys required to develop
construction documents for recommended solutions. Phase III consists of contract
administration, inspection, and surveying assistance during the construction phase. Budgets
for Phases II and III can be developed after completion of Phase I.
The estimated not to exceed budget for the above Phase I services is $10,671. The
work can be completed within two months after notice to proceed is received. Deliverable
items include a letter report and exhibits for staff and public presentation.
Services will be billed monthly on a basis of 2.3 times salary cost of personnel
involved in the project plus 1.10 times direct costs (printing, long distance telephone calls,
and travel out of the metroplex area). The budget indicated for this project will not be
exceeded without notification of and approval from the City of Coppell.
The Phase I budget does not include the following services which can be provided,
if necessary, on a basis of 2.3 times salary cost of personnel involved in the project and
1.10 times direct costs (printing, long distance telephone calls, and travel away from the
Dallas/Fort Worth metroplex, but excluding transportation in the metroplex area) incurred:
2.
3.
4.
5.
6.
7.
8.
Preparation of plans and specifications for construction
Expert witness testimony
Landscape architecture
Detailed surveys for design
Tree surveys and evaluations
Boundary or easement surveys
Remote sensing
Sanitary sewer evaluation surveys
ALBERT H. HALFF ASSOCIATES, INC.
ENGINEERS · SCIENTISTS · SURVEYORS
City of Coppell
July 31, 1989
Page 3
We trust that you will find this information satisfactory. I attach a description of
similar projects and a partial list of drainage studies. I also attach resumes of key
personnel designated for this project.
We appreciate the opportunity to be of service to the City of Coppell.
proposal meets with your approval, please sign and return one copy for our files.
If we can furnish additional information, please do not hesitate to call.
/mm
Attachments
APPROVED:
By:
CITY OF COPPEI I~
If this
Yours very truly,
ALBERT H. HAl Y:F ASSOCIATES, INC.
Walter E. Skipwith, P.E.
Date:
CITY OF COPPELL NOR/IILAKE WOODLANDS EAST FLOODPLAIN STUDY
PHASE T.
T. ASK8 PRIN 6R H&H EIT ENVIR DRAFT CADD SURVEY CLERICAL CO~UTER OTHER TOTAL
TASK~ PRIN 6R lt&H EIT ~IVIR DRAFT CADD SURVEY CLERICAL COMP~PI'ER OTHER TOTAL TOTAL
ENGR SCIENCE/ OPER . CREW CADD P.C. DIRECT LABOR TA~K
PLANNER COST COST CO~T
A. DATA COLLECTZO~
. ?~ B. STI~AM SURVEYS ~
C. FIELD RECONN ',,~ ;.~
Do HYDROLO0¥
1. CH~CK D.Aa-
a. ~OILB
&. LANDUBE
a. Tc, tN, DA'S, ROUTING
a. COHPUTE 2,10,100-YR
E. HYDRAULICS
1. INPUT X~ECTIONS
2. INPUT BRIDGES
3. INPUT CHANGE COEF
4. RUN & DRUG
5. pROFILHB ! XSECTION6
6. F.P. MAPPING
7. VKT&)CXTY / SUMMAaY
F. ALTERNATIVES
1. EROSION D/S MOORE
2. EROSION U/S BETHEL
3. F~OSION AT VILLAWOOD FLUME
~ -- 5. ~F,,NP.I~L WA~ ~um,,'rTY
~. I~PORT & PRESENTATION
1. REPORT
2. pRESENTATION MAT'LS
~. ~sRENTAT~oss
1 1 2
4
6 6
~ '~-'; '~0 ~ 4
1
i 2 11
6
1
2 11
2
1
0.5 8
0.5 8
0.5 8
0.5 4
0.5 4
0.5 6
i 2 6
4 8
7 7
10
$20
S0
$20
$o
$20
$5
$40
$155
$30
4O
480
$251 $251
$1,030 $1,030
$564 $604
$160 $160
$180 8180
$45 S45
$360 $360
$719 $739
$270
$1eo
$45
$621
$160
890
8143
$509
$509
$509
$279
$245
$509
$270
$200
$45
$641
$185
$130
$296
$539
$5o9
$509
$279
$725
$509
$100 $720 $620
50 $572 $622
$1,001 $1,001
,/ ?
TOTAL I, h~ ilOUI~ 14 7 124 18 18 0 10 4
TOTAL COaT $1,372 $441 $5,580 $882 $450 $0 $850 $136 $0 $290 $670 $9,711 $10,671
L~BO~ $9,711
C.~D $0
C0~£~. 290
OT~R DZRgCT CO~T $670
~:Y2~T,B~SZC FPM STUDY $10,671
CITY OF COPPELL NORTHLA~ WOODLANDS EAST FLOODPLAIN STUDY
P~ASE I.
TASI~ PRIN 81% 1%&H EIT ENVI1% DRAFT CADD SURVEY CLERICAL COMP~ER OTHER TOTAL TOTAL
TASK~ PItlN SR H&H EIT ENVIR DRAFT CADD SURVEY CLERICAL COMPUTER OTHER TOTAL TOTAL
ENGR SCIENCE/ OPER CREW CADD P.C. DII~CT LABOR TASK
PLANNER COST COST COST
A. DATA COLLECTION 1 I 2
B. ST~F~R SURVEYS 4
C. FIELD RECONN 6 6
D. HYDROLOGY
1. CH~CK D.A. 4
2. PRF~AR~ MODEL
a. ~OILS 4
&. LANDUSE 1
a. T¢, CN, DA'S, ROUTING 8
a. COMPUTE 2,10,100-YR Q'S I 2 11
E. HYDRAULICS
1. INPUT XSECTIONS 6
2. INPUT BRIDGES 4
3. INPUT CHAN~E COEF 1
4. 1%UN & DEBUG 2 11
5. PROFILES ! XSECTIONS 4
6. F.P. MAPPING 2
7. VELOCITY / SUMMARY i 1
F. ALTERNATIVES
1. EROSION D/S MOOlq~ 0.5 8
2. EROSION U/S BETHEL 0.5 8
3. EROSION AT VILLAWOOD FLUM~ 0.5 8
4. C, KN~I~AL PONDING 0.5 4
5. Q~AL WATER QUALITY 0.5 4
6. MAINTENANCE 0 · 5 8
Q. I~POI~T & PEBSENTATION
1. I~EPORT 1 2 8
2. PI~S~TATION MAT'LS 4 8
3 · PRESENTATIONS ( 3 ) 7 7
10
$20
$0
$20
$o
$20
$¢o
$155
$30
4O
480
$1oo
50
$251 $251
$1,030 $1,030
$564 $604
$180 $180
$180 $180
$45 $45
$360 $360
$719 $739
$270
$180
$45
$621
$180
$9O
$143
$509
$509
$509
$279
$245
$509
$720
$572
$1,001
$270
$200
$45
$641
$185
$130
$298
$539
$509
$509
$279
$725
$5o9
$820
$622
$1,001
CITY OF COPPF~LL NORTHLA~ WOODLANDS K~5T FLOODPLAIN STUDY
PHAaE I.
TA~K~ PRIN SR H&H EIT ENVIR DRAFT CADD SURVEY CLERICAL COMPUTER OTHER TOTAL TOTAL
HOURLY BILLING RATE (S/HR) $98 $63 $45 $49 $25 $40 $85 $34 $1 $1
TOTAL MAN ~ 14 7 124 18 18 0 10 4
TOTAL CO,ST $1,372 $441 $5,580 $882 $450 $0 $850 $136 $0 $290 $670 $9,711 $10,671
BUI~ARY~ PHASE !.
LABOR $9,711
c.~ $o
COJ4PUT~R 290
OTHER DIRECT COST $670
TOTAL BASIC FPM STUDY $10,671
FI~M'S CAPABILITIES
Albert H. Halff Associates, Inc. has offices in Dallas, Fort
Worth, Arlington, San Antonio, and Chicago consisting of
approximately 200 employees, including 105 planners, engineers and
scientists. Our technical teammembers hold over 131 degrees from
50 universities, and offer over 1000 years of cumulative
engineering and planning experience. Our personnel strive to
maintain our position in the forefront of engineering and planning,
through advanced education, participation in professional
societies, technical instruction, and the authorship of research
articles and presentations.
A. Size, History and Overall Experience of the Firm
Albert H. Halff Associates, Inc. is a minority-owned
consulting engineering firm with thirty-nine years of experience.
The firm is currently ranked 365th in ENR's list of the top 500
design firms in the United States, and is headquartered in Dallas,
with branch offices in Fort Worth, Arlington, San Antonio, and
Chicago. Since its beginning in 1950 with two employees, the firm
has grown to approximately 200 employees, including:
41 Civil Engineers*
10 Transportation Engineers
21 Hydrologic & Hydraulic Engineers**
Inspectors
2 Chemical Engineers
3 Mechanical Engineers
3 Electrical Engineers
6 Structural Engineers
6 Environmental Engineers
5 Environmental Scientists
5 Landscape Architects
1 Geologist
2 Planners
1 Specification Writer
3 Construction
32 Surveyors
2 Computer System Analysts
6 Computer-Aided-Design/
Drafting (CADD)
Operators
28 Administrative and
Clerical Staff
24 Draftsmen/Technicians
TOTAL 201
Ten civil engineers and two survey coordinators are Registered
Public Surveyors.
Three hydraulic engineers are Registered Irrigators.
Members of the staff have published 150 technical papers, hold
88 licenses of engineering registration and 14 patents, and include
officers in several state and national professional societies.
A key to Halff Associates' growth has been our commitment to
evaluate and adopt new technologies early in their development
rather than taking a wait-and-see approach. This progressive
philosophy is evidenced by our purchase of an IBM 1130 computer in
1969, a time when mechanical calculators were used in most design
offices. Our computer facilities are continuously evolving to
provide our engineers and environmental staff the latest technology
to extend their productivity and improve their accuracy. Halff
Associates was the first civil engineering firm in Dallas to equip
every staff engineer with an interactive computer terminal, thereby
fully integrating the use of computers in day-to-day design. Six
of the firm's twelve Intergraph CADD stations have also been
assigned to engineers for direct use in the design process. Our
recently acquired ERDAS satellite image scanner is currently being
used to evaluate environmental impacts for major construction
projects.
A significant factor in the success of Halff Associates has
been our constant philosophy of staff development through
continuing education. Our staff members are our greatest resource,
and we protect that resource in a rapidly-changing industry through
continued training. An example of this training is our in-house
TAGER studio. This facility allows our engineers to participate
in graduate levl course-work from Dallas area universities over
live television broadcast. Additionally, a series of weekly
in-house seminars update and train our personnel in the latest
engineering design, surveying, and construction techniques,
computer use, hydraulics, and other technical subjects. Our
seminars are videotaped for later use by new staff members and for
future reference by engineers.
HalffAssociates has been a leader in flood plain management,
watershed planning, hydraulics, hydrology, and drainage design in
Texas. Our method of comparison of alternatives in our Peaks
Branch flood control report served as the state-of-the-art model
for the text, Multiobjective Decision Analysis with Enqineering and
Business Applications (1982). The firm uses a wide variety o~
hydrologic and hydraulic techniques and programs to determine
design flood discharges and elevations. Design storm and flood
elevation discharges have been established in studies of fourteen
major watersheds in Dallas County. Techniques that were applied
and refined in these studies resulted in a publication entitled
"The Hydrology and Hydraulics of Flood Plain Studies." The firm
has also determined flood discharges and elevations for Federal
flood insurance studies in 15 Texas cities, on watersheds with
areas ranging from one square mile to several thousand square
miles. Our personnel have developed wide range expertise in the
use of flood frequency techniques for both urban and rural
watersheds. The firm stresses: (1) familiarity with municipal,
Corps of Engineers, Hydrologic Engineering Center, Federal
Emergency Management Agency, U. S. Weather Bureau, U. S. Geological
Survey, and other authority's technical procedures; (2) thorough
inspection and mapping of watersheds; (3) accurate and efficient
flood plain delineation procedures, using HEC-1, HEC-2, and other
programs; (4) formulation of innovative and practical flood
protection plans; (5) client input and consultation in the study
process; (6) clear graphics and use of laymen's language in
reports; and (7) application and refinement of state-of-the-art
advances.
Halff Associates has facilities which make the firm
highly-qualified to develop watershed management plans. We have
one of the largest computer facilities of any A/E within the
metroplex. Additionally, we have two Computer-Aided-
Drafting/Design systems, consisting of twelve work stations. The
CADD system permits rapid revisions to drawings, provides
outstanding quality drafting, accepts digitized topographic data,
and provides flexibility not possible with manual drafting.
The engineering works by the firm include:
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
Airports
Highways and Bridges
Wastewater Collection and Treatment
Industrial Waste Treatment
Railroads
Dams and Levees
Office and Industrial Park Development
Hydroelectric Power
Site Development
Flood Plain Management
Industrial Process Design
Land Reclamation
Water Supply: Treatment and Transmission
Storm Water Systems
Water Resources: Hydrology and Hydraulics
Distribution Systems Analyses
The services offered by the firm include:
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
o
Planning and Studies
Remote Sensing
Land and Pre-Construction Surveying
Landscape Architecture
Civil Engineering
Environmental Studies
Structural Engineering
Solicitation and Analysis of Bids
Electrical Engineering
Construction Services
Mechanical Engineering
Computer Modeling
Chemical Engineering
Research and Development
Environmental Engineering
RCRAClosure Plans
Albert H. Halff Associates, Inc. will provide planning, flood
plain management, hydrology and hydraulic engineering support,
surveying, land use inventory and assessment, as well as remote
sensing, CADD, and computer services.
Bo
Examples of Watershed Manag~ment, Flood Plain or Storm Water
Management Plans:
Following is a partial list of projects performed by Halff
Associates.
CITY OF ALLEN GREENBELT/LINEAR PARK STUDY
Study Cost:
$110,000
Client:
City of Allen, Texas
Reference:
Mr. Mark Thornton
(214) 727-9171
Status:
Study completed in October, 1986. The
City Council approved the study and has
incorporated the document as an amendment
to the City's Comprehensive Master Plan.
The plan is being implemented and is
prompting revision of several ordinances
and criteria governing the planning and
use of the City's flood plains.
Project Description~ Halff Associates prepared an
environmental inventory, flood plain management plan and recreation
plan for the major tributaries in Allen, Texas. The upper Rowlett
Creek watershed was studied to determine the future fully developed
land use. A flood plain model was developed to correspond to the
runoff generated from a 100 year flood event occurring on the fully
developed watershed. The new flood plain was delineated on the
city's topographic maps to evaluate flooding locations and plans
were developed to eliminate the flooding sites. A recreation plan
was developed for the 1300 acre flood plain, containing a
continuous hike and bike trail, an equestrian trail, nature
preserves, and active and passive recreation facilities. An
implementation plan was developed which modified the development
process and recommended the re-writing of ordinances relevant to
flood plain development.
FIVEMILE CREEK FLOOD PLAIN MANAGEMENT STUDY
Study Cost:
$349,000
Client:
City of Dallas
Reference:
Mrs. Tommie McPherson
(214) 948-4440
Status:
Study completed in December 1976
The Water Resources Development Act of
1986 (signed November 17, 1986) authorizes
Federal funds for construction.
Project Description: The Fivemile Creek Flood Plain
Management Study, prepared for the City of Dallas' Public Works
Department, involved 49 square miles of flood plain along Fivemile
Creek and its tributaries in southern central Dallas County. After
detailed study of the hydrologic and environmental characteristics
of the area, Halff Associates proposed channel improvements, a
levee system, storm water retention basins, and a 22 mile parkway
system, to promote the environmentally-safe use of available land.
These improvements are designed to minimize damage to over 550
flood-endangered structures and to encourage the growth and
development of the area to the benefit of over 157,000 residents
within the Fivemile Creek basin.
Fivemile Creek Pilot Channel Design Project: Halff Associates
designed a 540-foot pre-stressed concrete beam railroad bridge over
Fivemile Creek, including the realignment of the existing Missouri-
Kansas-Texas Railroad tracks. The project also included the design
of 16,000 feet of 220-foot wide channel for Fivemile Creek, from
Bonnie View Road downstream to the Southern Pacific Railroad bridge
and the relocation of 4,500 linear feet of Youngblood Road.
The Fivemile Creek channelization project is part of a flood
plain management system for southeast Dallas, developed for the
City of Dallas by Halff Associates. The approximate cost of work
was $4,000,000.
A summary of the Fivemile current status is shown.
RECOMMENDATION
IMPLEMENTATION COSTS
PROJECTED ACTUAL
STATUS
A. Total Stream Flood
Retarding Basins
Parkway Plan
$1,680,000 N/A
$9,334,000 N/A
Preliminary
Design
Complete, Bonds
Voted 11/85
B. Lower Five Mile Creek
Levee Plan
Pilot Channel
C. Middle Five Mile Creek
Lake Plan
$15,500,000 N/A
N/A $4,000,000
$12,300,000 N/A
Pilot Channel
and Railroad
Bridge Designed
by Halff
Associates;
Construction
Complete
The Water
Resources
Development
Act of 1986
signed Nov. 17,
1986 authorized
Federal funds
for the Five
Mile Creek
flood control
project.
D. Upper Five Mile Creek
Overflow Swale $
E. Ledbetter Branch
Flood Control Berm $
F. Woody Branch
Channel Rectification $
102,000 N/A
10,000 N/A
20,000 N/A
FLOOD PLAIN DELINEATION AND EROSION CONTROL
ON LOWER WHITE ROCK CREEK
Study Cost:
$ 50,000
Client:
City of Dallas
Reference:
Mrs. Tommie McPherson
Mr. John King
Mr. Bob Thrash
(214) 948-4560
Status:
Study Completed in October, 1985
Project Description: The Lower White Rock Creek Study
involved extensive reviews of flood-plain management alternatives
and environmental/land use impacts on the project area. The
development of management alternatives was based on a
fully-developed land use condition of the White Rock Creek
watershed. The most economical solution for flood plain
management, construction of a large straight channel, would have
destroyed Tenison Municipal Golf Course and Park, and the adjacent
open space environment. A detailed formula was devised to classify
and quantitate proposed improvement alternatives. The formula
assigned a numerical value and a weight factor to the
environmental/hydraulic achievements of the various options. Based
on this evaluation, a specific environmental rating could be
assigned to each option, aiding in the final consideration and
selection of the recommended alternative. A channel dam
and diversion swale were proposed, with miscellaneous minor
improvements within the golf course and park. The proposed
improvements achieved the control of storm-flow erosion within the
park, while maintaining land use and aesthetics. The consideration
of user safety, land use, and park aesthetics resulted in the
wholehearted support of park users and other interest groups.
RECOMMENDATION
IMPLEMENTATION COSTS
PROJECTED ACTUAL
STATUS
Alternatives C and G
West Side Swale
Channel. Dam
Diversion Structure
$ 950,000
$950,000
$ 489,000 N/A
$ 70,000 N/A
Erosion Control Sites $ 950,000 N/A
TOTAL $2,459,000
Designed and
Constructed
Preliminary
Design
Completed
Preliminary
Design
Completed
Preliminary
Design
Completed
PRELIMINARY DESIGN REPORT ON FLOOD PLAIN MANAGEMENT
FOR LOWER pEAKS BRANCH
Study Cost: $ 40,000 (1976)
Client:
City of Dallas
Reference:
Mrs. Tommie McPherson
(214) 948-4440
Status:
Study Completed in June, 1976
Project Description: Lower Peak's Branch is a major drainage
channel located in a residential neighborhood east of Fair Park in
South Dallas. Severe flooding has been experienced for a number
of years in the Lower Peak's Branch area because of increasing
development within the watershed which extends as far north as
Mockingbird Lane. A Lower Peak's Branch report prepared by Halff
Associates for the City of Dallas Public Works Department developed
seven alternatives for flood control in the area and a desirability
rating system to select the best alternative. The alternative
selected bythe City of Dallas includes channel improvements, three
bridges, and a storm water diversion conduit to relieve flooding
in the area. The Peaks Branch channel improvements include 8,000
linear feet of widening and concrete lining of the existing
drainage channel. The channel improvements also include the
reconstruction of the Lagoon, Spring and Frank Street bridges, and
the Southern Pacific Railroad bridge over the old channel.
The diversion conduit project includes the design of 8,440
linear feet of reinforced concrete double 12-foot by 12-foot box
culvert with pre-cast box and slurry wall construction
alternatives. The project requires the removal and replacement
of 2,500 linear feet of State Highway 352 (3 lanes), the
construction of a 900-foot long shoo-fly on the Southern Pacific
Belt Line track, other railroad track replacement and utility
relocations. The construction plans for the segment involving
State Highway 352 include detour routes and traffic control signage
designed to maintain two lanes of traffic open at all times during
construction. The approximate cost of this project is $5,000,000
for the channel improvements, and $13,000,000 for the diversion
conduit.
RECO~RNDATION
IMPLEMENTATION COSTS
PROJECTED ACTUAL
STATUS
Channel Improvements
$4,709,000
$5,000,000
Designed by
Halff;
Constructedby
City of Dallas
Diversion Conduit
$13,000,000
$8,000,000
Halff designed
diversion conduit
and is currently
conducting
construction
management.
C. List of Relevant Studies Perfo~ed or Being Performed
Halff Associates has conducted storm drainage studies,
flood-plain management studies, storm drainage master plans, Flood
Insurance Studies, and other related studies for governments and
agencies throughout the Southwest. Recent studies include:
City of Victoria and Victoria County Flood Insurance
Studies for the Federal Emergency Management Agency
Storm Drainage System Master Plan and Drainage System
Improvements for the City of Richardson
Flood Plain Management and Greenbelt/Linear Park Plan for
the City of Allen, Texas
Newton Creek and Ricketts Branch Flood Plain Management
Study for the City of Dallas
o A Comprehensive Drainage Study for the City of Hurst
South Playa Drainage Study for the City of Lubbock and
the Texas Water Commission
Tenmile Creek Master Drainage Study for the City of
Duncanville
Storm System Improvements on South Mesquite Creek in
Mesquite
O
Upper White Rock Creek Flood Plain Management Study for
the Cities of Dallas and Plano
Rowlett Creek Flood Insurance Study for the Cities of
Plano and Garland
o Peaks Branch Channel Improvements for the City of Dallas
o Central Business District Storm Drainage Study for the
City of Fort Worth
Plan of Reclamation, Environmental Assessment, Levee and
Pump Station Design for the Irving Flood Control District
Section III in Irving
Fivemile Creek Flood Plain Management Study for the City
of Dallas
Prairie and Elam Creeks Flood Plain Management Study for
the City of Dallas
Landscape, Drainage, and Groundwater Control Improvements
on the Trinity River at the City of Dallas' South Side
Waste Water Treatment Plant (also known as City of Dallas
South Side Buffer Zone Project)
Lower White Rock Creek Flood Plain Delineation and
Erosion Control Study (through Tenison Golf Course) for
the City of Dallas
Turtle Creek Flood Plain Management Study for the City
of University Park
Cedar Creek Flood Plain Management Study for the City of
Dallas
Town Lake Preliminary Design Report for the City of
Dallas
Trinity Greenbelt Park Preliminary Design Report for the
City of Dallas
White Rock North Water Transmission Line Environmental
Assessment, Public Surveys, and Presentations and Final
Alignment Selection (through nine Dallas parks) for the
City of Dallas
Park and Open Space Master Plan for the City of Wilmer,
for the Texas Department of Community Affairs and the
U.S. Department of Housing and Urban Development
Bachman Branch Flood Loss Prevention Study for the City
of Dallas
Browning and Slaughter Branches Flood Plain Management
and Storm Drainage Study for the City of Dallas
Plan of Reclamation, Levee and Pump Station Design for
the Denton County Reclamation, Road and Utility District
South Mesquite Creek Appraisal Report for the U.S. Army
Corps of Engineers' Fort Worth District
Tenmile Creek Appraisal Report, Duncanville and DeSoto,
Texas for the U.S. Army Corps of Engineers' Fort Worth
District
City of Allen Flood Insurance Study for the U.S. Army
Corps of Engineers' Fort Worth District
Dallas County Metro Flood Insurance Study (Units 3 and
5), totaling 342 miles of streams) for the U.S. Army
Corps of Engineers' Fort Worth District
Flood Plain Information Report on Maxwell Creek, Parker
and Collin Counties, Texas for the U.S. Army Corps of
Engineers' Fort Worth District
Preliminary Flood Control Investigation - Delaware Creek
and West Irving Branch, Irving, Texas for the U.S. Army
Corps of Engineers' Fort Worth District
}{auk Branch Storm Drainage Improvements for the City of
Duncanville
Bachman Lake Flood Plain Management Study for the City
of Dallas
Boggy Creek Channel Improvements and Hike & Bike Trails
Through Two Existing Parks the The EQ/MitigationArea in
Austin, Texas for the Corps of Engineers, Fort Worth
District
Lake Wichita/Holiday Creek Channel Improvements in
Wichita Falls, Texas for the Corps of Engineers, Tulsa
District
Bachman Lake Dam Gated Spillway Feasibility Study for the
City of Dallas
1986/87 Indefinite Delivery Water Resources Planning
Projects for the Fort Worth District Corps of Engineers
and the Tulsa District Corps of Engineers
South Side Flood Plain Designation Study and Evaluation
of Bois d'arc Levee District for the City of Dallas
Grapevine Creek Reclamation in the Cities of Coppell,
Dallas, and Irving, Texas and Dallas County, Texas
The above list of projects does not include numerous
stormwater master plans, flood plain management studies, and
channel improvement projects for private clients.
PROFESSIONAL PERSONNEL
Halff Associates team combines a diversity of experienced
personnel ready to undertake the challenging work offered by the
City of Coppell. The key members of the flood plain management
study team are listed below.
A. Professional and Senior Personnel and Project Discipline
PROJECT YEARS
NAME A~SIGNMENT EXPERIENCE
Dr. A.H. Halff, P.E., RPS
Technical Advisor and
Watershed Planning
49
Jose I. Novoa, P.E., RPS
Technical Advisor and
Storm Water Management
24
Walter Skipwith, P.E.
Project Manager/
Flood Plain Management
15
Dick Westsmith, P.E.
Computer Applications/
Hydraulics
18
David Morgan
Environmental
12
F.M. Carroll, ASLA
Planning/Landscape
Architecture
13
B. Key Personnel and Major Support - Brief Resumes
Mr. Walter Skipwith's, P.E., B.S.C.E., M.S.C.E., Flood Plain
Management/Hydraulics and Vice President of Halff Associates,
accomplishments in hydrology and hydraulics includes (1)
co-authorship, with Dr. W. Moore, of Evaluation of Urban Runoff by
Watershed Simulation, for the Hydrologic Engineering Center in
Davis, California, (2) paper presentations to the American Society
of Civil Engineers analyzing watershed simulation in relation to
urban runoff, and hydraulic and hydrologic methods of delineating
flood plains, (3) preparation of hydrologic, hydraulic, and
water-quality models for 8 Texas waterways and I proposed lake, (4)
hydraulic design for Phase I General Design Memorandum, Beals
Creek, a flood-protection project, (5) design of a storm-water
retention basin, (6) coordination of hydraulic engineering for
Units 3 and 5 of the Dallas County Metro Area Flood Insurance
Study, (7) hydrology and hydraulics for FIA flood-insurance studies
in 13 communities in Texas, (8) flood-control and pump-station
design for 8 projects covering over 500 acres, (9) hydraulic design
for sump-extension improvements within the Irving Flood Control
District Section III, and (10) design of site facilities at Park
West Office Community, including site lighting, tennis and
basketball courts, horseshoe pits, sailboat marina, and over 2
miles of jogging trails. Mr. Skipwith is currently overseeing the
completion of drainage master plan studies on White Rock Creek in
Dallas and Plano, Texas, and Rowlett Creek in Garland, Texas.
Ms. Jean Hansen, P.E., Hydroloqy/Flood Plain Management,
joined Halff Associates in January 1985 and has worked on several
commercial development and municipal improvement projects. Her
experience includes the design and preparation of construction
plans for paving, drainage, sanitary sewer, water and underground
electrical conduit. Some of her representative projects are: 1)
design and preparation of construction plans and specifications for
Park West Four, a 100-acre commercial site in Irving, Texas; 2)
design and preparation of construction plans and specifications for
improvements to MacArthur Boulevard from Valley View Lane to IH-635
in Irving, Texas including paving, drainage, and utility crossings;
3) design and contract administration for 942 linear feet of 8E6
electrical conduit including 580-feet of tunelling under IH-635 in
Farmers Branch, Texas; and 4) design and contract administration
of interim paving, drainage, and water service for marketing
purposes, Park West Four, Irving, Texas, contract included the
installation of an ongoing research project to monitor subgrade
movements in highly expansive clay soils. Ms. Hansen has also been
involved in several hydrologic and hydraulic studies for the White
Rock Creek basin in Plano, Texas. These studies included the
preparation of a flood insurance study in which flood plains and
floodways were determined for the Federal Emergency Management
Agency and a Flood Plain Management study for the City of Plano,
Texas.
Mr. Dick Westsmith, P.E., B.S.C.E., M.S.C.E., Computer
Applications/Hydraulics, has been with Halff Associates since 1978
as an engineer specializing in hydraulics and hydrology. Among
other projects, he has: 1) designed a flood control channel on
lower Fivemile Creek in Dallas, Texas, as well as drainage
diversion, drainage structures, right-of-way alignments, relocation
of utilities, relocation of railroads, weir design for drop
structures, and cost estimation; 2) performed flood studies of West
Texas cities for the Federal Emergency Management Agency. This
project included coordination of field crews, identification of
critical cross sections, verification of field data, preparation
of zone maps and final maps, and reconnaissance to determine
channel roughness and evaluate structural improvements in flood
plains; 3) prepared a feasibility study for a pilot project to use
modular, float-in powerhouses on the McClellan-KerrArkansas River
navigation system for the Department of Energy, including preparing
cost estimates, analyzing benefits of conventional and modular
designs, and coordination of work efforts of three engineers and
two technicians in preparing the final report; and 4) design storm
sewer and detention requirements for local communities.
Mr. Westsmith is knowledgeable in FORTRAN computer language
programming, and has developed numerous computer programs to
facilitate data presentation. He is familiar with HEC-1,HEC-2,
ILLUDAS, HEC-5, HYDUR, RMA1 and RMA2 programs, among others, and
has formulated an urban hydrology program for examining bypass
street flows, surcharged drainage systems and soil infiltration.
This software has been applied to several watersheds in the
Dallas/Fort Worth area with excellent results. Prior to joining
Halff Associates, Mr. Westsmith physically modeled the hydraulic
behavior of the Winnipeg River using a Froude model. His graduate
work included specialized courses in riverine engineering and
physical statistical hydrology. His masters research dealt with
the hydrologic cycle and with water movement and storage in rural
areas.
Ms. Sophia Iliadou, Hydraulics, has a Bachelor of Science
degree in Civil Engineering from Texas A&M University. Ms.
Iliadou's scholastic background includes extensive work in
hydraulics and hydrology. Ms. Iliadou's experience with Halff
Associates' Water Resources Department includes several hydrology
and hydraulic analysis projects for Flood Insurance Studies, Flood
Plain Management Studies, and development design for such clients
as the Corps of Engineers, City of Dallas, City of Plano, and City
of Garland. Specific projects include the following= 1) project
engineer for the City of Garland Flood Plain Management study, 2)
hydraulic engineer for Southside Flood Plain Designation study, 3)
hydrology and hydraulics for Rowlett Creek Flood Insurance Study
update, 4) hydraulic engineer for Flick-Reedy flood plain
reclamation projects in Chicago, Illinois, and 5) design engineer
for proposed North Garland Avenue culvert over Stream 213 in
Garland, Texas. Ms. Iliadou has attended hydrologic and hydraulics
short courses and has experience with hydrologic and hydraulic
models such as NUDALLAS, HEC-1, HEC-2, and TR20.
Dr. Albert H. Halff, Ph.D., P.E., Technical Advisor and
Watershed Planning, has three decades of engineering design and
construction experience, and has served as an expert witness in
major flood plain damage and land condemnation cases. Under his
supervision, Halff Associates has completed reports and designs for
numerous municipal, state, and Federal agencies. He directed the
Bachman Branch study following a disastrous 1966 flood. This 1968
report presented alternative flood control strategies while
recommending preservation of a scenic flood plain. Public interest
in this report led the city to initiate flood plain studies and
planning for all Dallas streams. The firm subsequently designed
a flood plain delineation model for the city, tested and refined
the model, trained city personnel in its use and applied it in
routing and planning for flood control for numerous Dallas streams.
The firm's Fivemile Creek Plan has promoted revitalization of an
entire section of Dallas. The Peaks Branch Plan has been praised
for innovations in comparing flood control options, and our method
of comparison of alternatives in the report served as the
state-of-the-art model for the text, Multiobjective Decision
Analysis with Engineering and Business Applications (1982).
Dr. Halff's other projects include: 1) design of drainage systems
for municipalities and private developers, including a pioneering
open system that enhanced the appearance of a major industrial
park, 2) design of the first Texas industrial retention basin for
flood peak reduction and treatment of storm water, 3) a feasibility
report for Town Lake on the Trinity River within the Dallas
floodway system, and 4) design of the Trinity Greenbelt Park within
the Trinity River floodway. Dr. Halff has authored numerous
articles, and has lectured at the Hydrologic Engineering Center in
Davis, California. He is active in metroplex community life and
has contributed to solutions of our community's problems. He is
currently the past president of the Dallas Chapter of the Texas
Society of Professional Engineers and the 1986 recipient of the
national Samuel Arnold Greeley Environmental Award from the
American Society of Civil Engineers.
Mr. David Morqan, Environmental Scientist and Planner, Vice
President of HalffAssociates, provides the environmental planning
and assessment for Halff Associates' projects. He oversees the
environmental planning of many construction projects by carefully
evaluating factors such as erosion, surface and groundwater
quality, air quality, noise levels, energy production and
consumption, land use trends, historic and archaeological
sites, and plant and animal communities including threatened or
endangered species. Mr. Morgan performed an eutrophication
assessment for the proposed Millican Lake on the Navasota River for
the Corps of Engineers. He has also assisted in the collection and
analysis of water quality data for the City of Dallas's proposed
Town Lake. Mr. Morgan has completed numerous environmental impact
assessments related to flood plain management, some of which are;
Beals Creek for the U. S. Corps of Engineers, Cedar Creek and
Tributaries, Prairie Creek and Elam Creek, Five Mile Creek and
Tributaries for the City of Dallas, as well as the Irving Flood
Control District Reclamation Project for the Irving Flood Control
District No. 3. The work for these projects entailed: (a) field
collection and classification of flora and fauna, (b) water quality
evaluation, (c) open space inventory and planning, (d) land use
master planning, (e) evaluation of flood control alternatives, and
(f) recommendation of flood plain management plan. Mr. Morgan
recently received the 1986 Samuel Arnold Greeley Award from the
American Society of Civil Engineers, for his part in the disposal
of five-million gallons of oil sludge for Trammell Crow Company in
Dallas, Texas. He assisted in the environmental planning and
assessment of the final alignment of an 84-inch water transmission
line through the White Rock Creek flood plain and fourteen public
parks and inventoried and assessed over 3000 significant trees.
The water line was designed around significant stands of trees
rather than destroying them. Mr. Morgan recently completed a
Greenbelt/Linear Park Study for the City of Allen, Texas, which
included an environmental inventory, flood-plain management and
recreational plan for the major tributaries within the City.
Mr. Morgan provides input and assistance on many of the firm's
projects to insure compliance with local, state and Federal
regulations. His environmental expertise insures a
carefully-planned project which is compatible with the environment.
Mr. F.M. Carroll, ASLA, Landscape Architect, has over twelve
years of diverse experience encompassing development management,
project management, landscape design, planning, construction and
profit center development. Mr. Carroll's expertise includes
client/consultant/contractor/public entity coordination, design,
planning, budget development and forecasting, proposal preparation
and implementation. Since joining Halff Associates, Mr. Carroll
has provided planning and design services on projects that include:
(1) site placement and layout of Dallas/Fort Worth's
Superconducting Super Collider proposal to the State of Texas; (2)
development of environmental and corridor treatment concepts for
the State Highway 114 North Beltway "Justification Study"; (3)
design aid and construction inspection of a three-mile (200 ac.)
buffer which develops a continuous wet land and nature habitat,
while surrounding Dallas' Southside Wastewater Treatment Plant; (4)
land and thoroughfare planning for an 1800-acre industrial airport
park in north Fort Worth, and (5) land planning thoroughfare
layout, and land parcelization studies for 2,400 acres adjoining
the new North Beltway in north Fort Worth. Prior to joining Halff
Associates, Mr. Carroll was Director of Development Management and
San Antonio Office Manager for PeckhamInc. Land Planners/Landscape
Architects. His projects have included: (1) design of signage,
medians, and screening for Interchange Park, a 70-acre office park;
(2) design of entries, medians, a recreational lake, greenways,
signage, and a new state highway for Westlakes, a 1000-acre
mixed-use development; (3) Encino Park, an 1800-acre mixed-use
development; (4) design of overall landscape planning, medians, and
first phase landscaping for the University of Dallas; and (5)
design of greenway and floodway enhancement, thoroughfare
enhancement and private business landscaping for Mercantile Center,
a 1600-acre business and industrial park. Mr. Carroll was the
senior landscape architect for the Fort Worth Stockyards Economic
Redevelopment Program, responsible for developing an economic and
physical strategy plan for redevelopment of Fort Worth's Historic
Stockyards District. This project included master planning, and
design of pedestrian and floodway enhancement and design of
infrastructure improvement, including utilities, sewer, storm
sewer, and roads, for historic brick street reconstruction.
MEMORANDUM
July 27, 1989
TO:
FROM:
SUBJECT:
REF:
Mark Wolfe, Mayor
Alan D. Ratliff, City Manager ~-~l~-
North Lake Woodlands East Drainage Meeting Held
7-18-89
Follow-up Staff Meeting Held 7-27-89
Attendees:
Russell Doyle, City Engineer
Frank Trando, Deputy CM/Finance Director
Per Birdcall, Streets Superintendent
Howard Pafford, Water Superintendent
Troy Glidewell, Fire Marshal
Alan D. Ratliff, CM
Larry Jackson, CA
The purpose of the follow-up meeting was to
information that was presented at the 7-18 drainage
with citizens.
I. PROBLEMS
A. Erosion
2.
review
meeting
Telephone, electrical & TV cable exposed
Storm sewer/sanitary sewer lines exposed
Bank & side wall of channel eroded
Tree roots exposed
Fences undermined
B. Brush and Debris
C. Flooding of Floodplain Area and Higher Ground
D. Ponding & Mosquito Problems
E. Foul Smell
Inaccurate Maps Depicting Property Lines and
Easements
II. ACTION TO BE TAKEN:
ae
Specific problem identification with maps and
photos indicating specific location of each of the
above problems.
Be
Engineering study to obtain maps/photos and
additional information, recommended soiutions with
estimated costs, detailed plans developed for
recommended solutions a~ter Council determination.
1. Basic study $10,000
2. Survey $15,000
Total $25,000
Independent engineering firm needed to conduct
study to ensure objectivity and acceptance by
citizens.
III. POSSIBLE SOURCE OF FUNDS FOR STUDY
A. Balance of CIP funds
General Fund - contingent on reimbursements from
other sources
C. Issuance of C/O's
D. TRA Financing
IV. LEGAL QUESTIONS
A. Liability of City for Drainage Problem
Legal ability to enter on property for cleanup and
removal of fences, etc.
C. Legal perimeters of creating drainage district
V. ASSIGNMENTS
ae
City Manager will prepare an agenda item for the
August 8th City Council meeting to obtain
authorization from Council for the City
Manager/City Engineer to seek outside engineering
firm to perform the study with a maximum cost
designated.
B®
Frank Trando - provide memo on financial aspects;
methods and sources of funding.
C. Larry Jackson - provide memo to legal questions.
Russ Doyle - provide engineering study scope and
budget estimates.
Ee
Troy Glidewell - provide historic information
about action taken last year and will perform
field inspection and video tape area.
Linda Varonich - provide memo as to action she'has
taken since the meeting and her commen~s and
recommendations about health hazards.
The City With A Beautiful Future 214-462- _
CITY OF COPPELL
CITY CO~CIL AGE~A REQUEST
RECOVERED IT~ C~TION: Consider approval of replat of lots
and 10, Block '~, Nor~hlake ~oodlands gast - Phase 6~ ~o-
lot 9-R, Block "J".
me
II.
III. RECOMMENDATION OF PLANNING & ZONING COMMISSION:
Ve
VI.
VII.
VIII.
IV. STAFF REPRESENTATIVE(S) TO ATTEND COUNCIL MEETING:
Ed Powell, city Engineer
RECOMMMENDED TO BE DISCUSSED AT PRE-COUNCIL BRIEFING: Yes No
SUPPORT MATERIAL: SUBMITTED Yes X No
DATE SUBMITTED TO CITY ATTORNEY'S OFFICE FOR PREPARATION OF ANY LEGAL
DOCUMENT, ORDINANCE, RESOLUTION, ETC.
FINANCIAL REVIEW:
BUDGETED ITEM
NON BUDGETED ITEM
ORIGINAL ESTIMATE OR BUDGET
CURRENT ESTIMATE:
AMOUNT UNDER OR OVER BUDGET $
IX. SUBMITTED BY Planning and Zoning Department
X. APPROVAL OF CITY MANAGER'S OFFICE: ~ HOLD
SOURCE OF FUNDING:
BOND FUNDS
OPERATING BUDGET
OTHER:
ACCT. NO.
AGNDARQSTFORM
MINITS
ITEM
The City With A Beautiful Future
P. O. Box 478
Coppell, Texas 75019
214 - 462 - 0022
TO:
FROM:
DATE:
Frank Trando, Interim City Manager
Powell, City Engineer~_~
Ed
October 17, 1986
SUBJECT: Replat of Lots 9 and 10, Block J;
Northlake Woodlands East - Phase 6
For your information Mr. Don Tipton, Consulting Engineer for the
Northlake Woodlands East - Phase 6 project, has submitted plans for the
replat of Lots 9 and 10, Block J. His request is to replat these two
lots into a single lot, which will be designated as Lot 9-R, Block J.
Since this development has been previously reviewed and approved by the
Planning and Zoning Commission and the City Council, and no underground
utilities or street paving will be changed; we are requesting that we be
allowed to bypass the Planning and Zoning Commission, as authorized in
Section VI, page 2, Procedures for Subdivision, of the City of Coppell
Subdivision Ordinance, and submit this request directly to the City
Council for their approval or disapproval.
Please consider placing this item on the October 28, 1986 City Council
agenda.
SECTION IV - PROCEDURES FOR SUBDIVISION
A.
In o~de~ to allo~ o~de~ly p~ocessing of p~oposed
sUbdiVisions, the p~ocedu~es discussed in the folloving
sections shall be fol]oved. ]n general the eteps necessary
fo~ subdivilion include:
1. Annexation by the City Council.
2. Zoning by the Planning & Zoning Commission and
the City Council.
3. App=ova] of a land study by the Planning &
Zoning Commission and the City Council.
App=oval of p~elimir~y plat and plan~ by the
Planning & Zoning Commission and City Council.
5. Approval of final plat and plans by the Planning
& Zoning Commission and the City Council.
6. Approval of the final construction plans by the
City Engineer.
?. Filing of ~pp~oved plat vith the City of Coppe]l
and the County Clerk and the ~eco~ding of
executed easements~ dedications, and othe~
documents ~equi~ed to be filed of =eco~d.
8. Completion of const=uction and acceptance of all
improvements by the City~ submission of as-built
d=awtngs.
This p~ocedu=e may be vatted at the disc=etlon of the City
Non.ger. For those o~eas to be subdivided ~hich lie
outside the co~po~ate limits but a~e being submitted only
fo~ ~evie~ and app~ovo] to satisfy the ~equi~ements of
extraterritorial ~u~isdtction and A=ttcle ~7~ Iai, Ve~non's
Subdivision Ord.
DON A TIPTON, INC.
CONSULTING ENGINEERS
1652
October 7, 1986
6330 Belt Line Road Suite C Garland, Texas 75043 (214) 226-2967
7
_
Mr. Ed Powell
CITY OF COPPELL
616 S. Coppell Road
Coppell, Texas 75019
Re:
REPLAT, LOT 9-R, BLOCK J
NORTHLAKE WOODLANDS EAST PHASE 6
Coppell, Texas
Dear Mr. Powe11:
Enclosed please find the following information for submittal of
Replat on the above referenced project:
1.) Twenty-two (22) folded prints of the Replat
2.) One 8 1/2" x 11" reduction of the Replat
3.) An application and filing fee in the Amount of $105.00
It is our understanding this submittal .will allow us to be on the
Nowember'2Oth Pqanning and Zoning CommiSsion agenda.
If you have any questions or we can be of any further service
regarding this project, please call.
Yours very truly,
Project Manager
/lc
Encls.
cc: Mr. Steve Parsons
March ~7, 1986
General Telephone Company
ofthe Southwest
P. o. Box 153028
Irving, TX 75015-3028
Don A. Tipton, Inc.
Consulting Engineers
6330 Belt Line Road, Suite C
Garland, TX 75043
Re:
Northlake Woodlands Estates No. 6
Lots 9 & I0, Block J
Coppell, Texas
Dear Mr. Tipton:
This is in response to your letter of February 13, 1986 to Ted
Brannan concerning the subject matter.
Please be advised that General Telephone Company of the Southwest
has no'objection to the abandonment of the 10.0 foot GTE easement
situated along the common lot line of Lots 9 and ]0, Block J of
Northlake Woodlands Estates No. 6.
If we can provide further assistance regarding this matter, please
advise.
Sr. Enginer - R-O-W
DA: aw
A ~a~! of ~TE Cor~orati~r~
COPPELL, IEXAS 75019.
S~DIV/s] ON APPL] CAT/ON
Subdivision Name
Date _ October 7th,
NORTHLAKE WOODLANDS EAST - PHASE 6
19 86
Preliminary. Plat
Applicant DON A. TIPION, INC.
REPLAT
%Pat Atkins
X
Address 6330 Belt Line Road, Suite "C" Garland Texas
Street
75043
Phone t 226-2967
Firm Preparing Plat
(SAME AS APPLICANT)
Address
Street
City S ta te
Zip
Phone !
P'r operty Owner.
TROTH ENTERPRISES, INC., & S. C. PARSONS, INC.
Address
102 Mead~wcreek, Suite 101, Coppell, Texas 75019
Street City State
Phone #
Developer
Address
Phone
(SAME AS OWNER)
Street
City State
Zip
zip
All Correspondence relative to this application should be directed to
whom:
Name (APPLICANT)
Address
REPLAT
Lot ~)-I~ ~ §lock J
~^~s P~.~s. survey= ~..o ~,e~ I
I ~PPE~ ~L~ COU~Y ~ ~
I,=l=l='],=t=-= 1, ~t
..~ . , , ,~. .... ~' ; ~ ~,