R02-095RESOLUTION NO. R02- Oq ~'
A RESOLUTION OF THE CITY COMMISSION OF THE
CITY OF BOYNTON BEACH, FLORIDA, AUTHORIZING
THE MAYOR AND CITY CLERK TO EXECUTE TASK
ORDER NO. 14 FOR CH2M HILL, INC., IN THE AMOUNT
OF $82,046 FOR THE PHASE I, TECHNICAL SERVICES
FOR THE NE 17TM AVENUE DRAINAGE
IMPROVEMENTS AND WATER MAIN REPLACEMENT
PROJECT; AND PROVIDING AN EFFECTIVE DATE.
WHEREAS, this project is to provide Phase I Technical Services for the NE 17th
Avenue Drainage Improvements and Water Main Replacement Project; and
WHEREAS, the City Commission, upon staff's recommendation, has deemed it
appropriate, and in the best interests of the public, to approve a Task Order for
CH2M Hill., for the Phase I, Technical Services for the NE 17th Avenue Drainage
Improvements and Water Main Replacement Project.
NOW, THEREFORE, BE IT RESOLVED BY THE CITY COMMISSION OF
THE CITY OF BOYNTON BEACH, FLORIDA, THAT:
Section 1. The City Commission of the City of Boynton Beach, Florida does
hereby authorize and direct the Mayor and City Clerk to approve and execute a Task Order
for CH2M Hill, in the amount of $82,046.
Section 2. This Resolution shall become effective immediately upon passage.
PASSED AND ADOPTED this I~ day of June, 2002.
Commissioner
Task Order NO. 14
Phase I - Technical Services for the NE 17th Avenue Drainage
Improvements and Water Main Replacement Project
A. Background
In 1992, the City of Boynton Beach (the CITY) completed a Stormwater Master Plan. An
update to the plan was prepared in 1999, which identified areas that could benefit by the
construction of swales and exfiltration basins. In October 2001, the CITY identified a
problem area due to small storm street flooding, which requires improved stormwater
drainage. The problem area (the SITE) is bounded by NE 19th Avenue to the North, NE 2na
Lane to the East (including small "DEAD END" street), NE 16th Court to the South and
Seacrest Boulevard to the West (see Exhibit 1). In May 2002, the CITY conducted an
investigation using potholes within the boundaries of the SITE to identify the type of pipe
materials of the potable water distribution system. The results of the investigation found
that asbestos cement pipe made up the water distribution system at the SITE.
The CITY has requested design/build (D/B) services from CH2M HILL (the
CONSULTANT) for improvements to the stormwater system and the replacement of
asbestos pipeline with cement lined ductile iron pipe at the SITE. The D/B method is
referred to as Construction Management at Risk (CM) and is intended to expedite
completion of the improvements in the most cost effective manner. The project will consist
of the replacement of the asbestos concrete potable water piping with cement line ductile
iron pipes and implementation of swale and exfiltration systems to reduce small-storm
street flooding experienced at the SITE. The swales and closed drainage system will be
constructed (or restored) in areas where soil conditions allow for adequate percolation, will
not result in excessive ponding, and where existing conditions (underground utilities, large
trees, etc.) allow construction with minimal cost and aesthetic impacts.
The scope and budget are based on a closed system with exfiltration basins and/or a swale
solution (i.e. no positive outfall). The stormwater improvements shall be in general
conformance with the recommendations of the 1992 Stormwater Master Plan and the 1999
update to the plan.
The project will be implemented in two Phases:
Phase I: This Phase consists of the following tasks:
· Task I includes collection of survey and geotechnical data of the SITE.
· Task 2 includes runoff modeling (including stage storage analysis),
preparation of a preliminary design, and meeting with the South Florida
Water Management District (SFWMD) to present the project and discuss
permitting requirements.
DFB\CH2MH TASK ORDER 14,DOC
· Task 3 includes the preparation of a Preliminary Design Memorandum
(Memorandum) that outlines the design elements, standards, and criteria
that will be used in the development of the design and construction plans
for the project. The Draft Memorandum will also include an Engineer's
estimate of the probable construction cost. The Final Memorandum will
include the estimated total project implementation cost. Also, included as
part of this task is the presentation of the Draft Memorandum and
preliminary design at a workshop with CITY staff and participation with
CITY staff at one town meeting.
Phase II: This Phase of the project will be implemented, upon completion of Phase I,
under a separate Task Order that will be prepared and submitted to the CITY
for approval. This Phase of the project will consist of the following tasks.
· Task 1 will include preparation of construction drawings and of the
General Environmental Resource Permit (ERP) required for construction.
This task includes gathering any additional information needed for the
preparation of construction drawings and ERP. This task will also
include assisting the CITY in obtaining Palm Beach County Public Health
Unit construction permits for the pipe replacement by obtaining and
completing the permit forms for CITY approval/signature and providing
background information.
· Task 2 will include construction of the stormwater improvements using
the D/B method and the replacement of the existing asbestos pipeline
with cement lined ductile iron pipe, where the CONSULTANT will hire
local contractors to execute the construction.
B. Scope of Services for Phase I
Task 1 - Data Gathering
The CONSULTANT will retain the services of a registered Professional Surveyor to collect
survey information from the SITE. The survey will provide topography and locations of all
surface features, including manholes, driveways, walks and curbing. Using surface
features, existing record drawings, known utility information and CITY mapping, a base
plan will be developed for the SITE.
The CONSULTANT will contract a geotechnical services firm that will conduct a maximum
of 15 test borings, geotechnical analysis, and estimate hydraulic conductivity. The
information collected during the geotechnical studies of the area will be used to prepare a
preliminary design memorandum of the proposed stormwater improvements.
Task 2 - Runoff Analysis
The CONSULTANT shall use available data to determine drainage and/or sub-basin
boundaries within the watershed applicable to the SITE. Information collected from the
survey, conducted under Task 1 - Data Gathering, will also be used to assist in determining
drainage basin and/or sub-basin delineation.
Based on land use, survey, and geotechnical information, the CONSULTANT will perform
the following calculations.
DFB\TASK ORDER_REV8.DOC 2
Stage- storage calculation
Impervious area ratio calculation
· Time of concentration calculation
· Curve number calculation
The CONSULTANT will develop a hydrologic model (XP-SWMM or AdICPR) as required
for the permit application. The model will be based on the following items:
· Rainfall depth, duration, and frequency data
· Basin characteristics (i.e., areas, slope, length and existing stormwater flow pattern)
· Physical conveyance and storage features
· Land use characteristics and impervious areas
· Soil infiltration rates, storage, and hydraulic conductivity
The CONSULTANT will simulate 1.0-inch, 2.5-inch 5-year-24 hour, and 10-year-24 hour
existing land use and hydraulic conditions and up to three alternative hydraulic conditions.
Flood conditions and Level-of-Service (LOS) assessments shall include application of the
SFWMD and Palm Beach County criteria. The model will be used to identify the benefits
(LOS) expected for each alternative developed and to support permitting, design or problem
area evaluations.
Task 3 - Preliminary Design Memorandum
The CONSULTANT will prepare a Preliminary Design Memorandum, outlining the design
elements, standards, and criteria that will be used in the development of the design and
construction plans for the project. This memorandum will provide sufficient detail and
information to show that the proposed improvements are feasible to construct according to
the recognized standards for the project and will serve as the basis for permitting of the
project. An Engineer's estimate of probable construction cost will be included in the Draft
memorandum. The Final Memorandum will include the estimated project implementation
cost.
It is the CONSULTANT'S understanding that since the project area is less than 100 acres
and greater than 10 acres, a General Environmental Resource Permit (ERP) will be required.
A meeting with the SFWMD will be included as part of Phase I to discuss the permitting
requirements for the proposed stormwater improvements. Preparation of the ERP and
submission to the appropriate regulatory agencies will be include in the Scope of Work for
Phase II.
C. Assumptions
The scope and budget are based on a closed system with exfiltration basins and/or a swale
solution (i.e. no positive outfall). The stormwater improvements shall be in general
conformance with the recommendations on the 1992 Stormwater Master Plan and the 1999
update to the plan.
The CONSULTANT assumes that Phase II will be delivered using the D/B approach and
the information gathered as part of this Task Order will be used to prepare a total project
delivery cost. The collection of any additional information needed for the preparation of
construction drawings and will be included in the implementation costs of Phase II.
DFB\TASK ORDER_REV8.DOC
D. Contract Reference
This Task Order shall be performed trader the terms and conditions described within the
Agreement for General Engineering Consulting Services dated October 4, 2000 between the
City of Boynton Beach and CH2M HILL.
E. Compensation
Compensation by the CITY to the CONSULTANT for Phase I will be a lump sum basis in
accordance with the above mentioned Agreement. The estimated compensation for the
services described in this Task Order is $81,999 as shown in Table 1.
TABLE 1
Phase I - NE 19th Ave. Stormwater Improvements
City of Boynton Beach
Labor Labor Cost Expense Cost Total
Hours
Task 1 - Data Collection 113 $10,103 $31,861 $41,964
(Survey and Geotechnical)
Task 2 - Runoff Analysis 146 $13,252 $854 $14,106
Task 3 - Preliminary Design 286 $24,303 $1,673 $25,976
Memorandum
PhaSe I Total 545 $47,658 $34,341 $82,046
G. Schedule
The CONSULTANT will commence services upon receipt of written authorization and will
complete all work associated with this Task Order three months from the receipt of
authorization. A schedule of Phase I is present as Exhibit 2 of this Task Order.
DFB\TASKORDER_REVS,DOC
4
APPROVED BY:
CITY OF BOYNTON BEACH, FLORIDA
/ y Broening
Dated this !8 day of ~J~n~. ,2002.
SUBMITTED BY:
CH2M HILL, INC.
~ ~]Vice PrOsi~nt, Area Manager
Dated this 3 day of ,,,J t,.~,... ,2002.
DFB\TASK ORDER_REV8.DOC
WS'4~g02(X~ DFB 162931 .WT.08 412002
N.T.S.
EXHIBIT 1
Project Area
City of Boynton Beach
Stormwater Management System Improvements
Exhibit 2
City of Boynton Beach
Stormwater Management System Improvements - NE 19th Ave
Tasks Months
I 2 3
Data Gathering (Survey/Geotech)
Runoff! Modeling :lum--~
g two meetings