HomeMy Public PortalAboutTask Order 2022-01 - Wingard Property Infiltration SystemTASK ORDER 2022 - 01
THIS TASK ORDER IS ISSUED PURSUANT TO THE PROFESSIONAL ENGINEERING SERVICES CONTINUING SERVICES
CONTRACT DATED MAY 3, 2021(AGREEMENT), FOR THE CITY OF CRESTVIEW, FLORIDA, WHICH IS INCORPORATED HEREIN
BY THIS REFERENCE, WITH RESPECT TO
Professional Engineering and Consulting Services for Site -Specific Field Studies
for a Wingard Property Infiltration System
Article A. Purpose
The City of Crestview (CLIENT) has seen significant population growth in recent years and that
growth has created the need to expand and build new residential communities. This growth has led
to an increase in influent flow at the Crestview Wastewater Treatment Plant (WWTP). In addition,
planned expansion of the SR 85 bypass road and future East-West corridor will be constructed on
the existing effluent spray field thus reducing overall effluent disposal capacity at the WWTP. As part
of the Phase IV WWTP Expansion and RIBS project, CH2M HILL designed the current RIBS site (5 RIBs
with 0.63 million gallons per day (mgd) permitted capacity) to be expanded by the construction of
RIB No. 6 as required by area growth, influent flows and property acquisition. The existing RIB
system was put into service in July 2014. However, the City was not able to acquire the land parcel
on which RIB No. 6 was to be constructed. Jacobs will be initiating afield study on the existing RIB
site, under a separate task order, to collect additional data to support a substantial modification of
the current operating permit to increase the permitted disposal capacity of the RIB system.
The CLIENT has identified a parcel of land located northeast of the WWTP site (Wingard property) as
another potential reuse disposal site. The construction of RIBS and/or infiltration wetlands on the
Wingard property is required to meet the CLIENT's rapidly growing wastewater disposal
requirements. The purpose of Task Order 2022-01 is to authorize and direct Jacobs Engineering
Group Inc. (Jacobs) to proceed with the professional engineering and consulting services for site -
specific evaluations for the planning phase of a new infiltration system on the Wingard property.
Article B. Scope of Services:
Project Understanding
A forested, vacant land parcel adjacent to the Crestview WWTP (Wingard property) has been
identified as a potential site for an infiltration system. See Figure 1 for the location and boundaries
of the parcel to be evaluated. The Wingard parcel is 48.7 acres in size and is similar (topography and
soil types) to the City's existing RIB site located south of the Wingard parcel. Jacobs has performed
a preliminary desktop analysis and groundwater modeling of this site to determine its potential
suitability and effluent disposal capacity prior to recommending its purchase. Based on this
preliminary evaluation, the City purchased the property and is requesting Jacobs to provide
professional services for further planning phase evaluations for an infiltration system on the site.
FIGURE 1
This project will include site -specific field investigations of the parcel, including a survey of land -use,
surface waters, near -surface soils, hydrogeologic conditions; and endangered species. A conceptual
design detailing a conceptual site plan of the proposed infiltration basin design will also be
prepared.
The scope of services provided with this task order is outlined in detail below.
Task 1— Threatened & Endangered Species Habitat Assessment
Jacobs will conduct a field investigation to evaluate the habitat potential for threatened and
endangered (T&E) species. Specific subtasks performed for this effort include:
Review existing data from State and Federal agencies regarding ME species. Specifically, the
Florida Natural Areas Inventory (FNAI), Florida Fish and Wildlife Conservation Commission (FWC)
and the U.S. Fish and Wildlife Service (USFWS) online database search will be conducted to
compile available information on known occurrences and potential habitat for ME species that
may frequent the area.
Conduct ME field investigations with one team of two Jacobs biologists for up to two days. The
site will be assessed for the presence of ME species and habitat will be qualitatively assessed.
• Prepare a TM presenting the findings from the agency information and field survey. This
memorandum will include a discussion of recommendations for agency coordination, list of
permitting requirements, and determination of species -specific surveys that may be required if
potentially suitable habitat is identified during the field investigations.
Task 2 - Field Investigations
Site -specific field investigations will be required to obtain the data needed to evaluate site
suitability, capacity, design requirements, and potential impacts of an infiltration system. The
objective of the field investigation, which will be completed as part of this task, is to assess the
general lithology and depths of hydrogeologic layers, install temporary groundwater monitoring
wells and piezometers, and survey the project site. Hydraulic load testing, water sampling and
modeling will be performed under a separate task order. This information will be used to evaluate a
stand-alone RIB system within the Wingard parcel. Refer to Figure 2 for the type and proposed
locations of borings, monitoring wells, piezometers and hydraulic testing discussed below.
2.1 Exploratory Borings
Up to 13 exploratory borings will be advanced using sonic drilling techniques. In addition, two,1-
inch WTS shallow stilling wells will be installed by jetting or hand auger methods. One exploratory
boring will be advanced to the base of the surficial aquifer (estimated to be at EL 115 or 105 feet
deep assuming a ground EL of 220 feet). The maximum depth of the exploratory boring is assumed
to be 120 feet. One additional exploratory boring will be advanced through the hydrogeologic layers
of interest (up to approximately 100 feet), the remaining exploratory borings will be advanced to
depths suitable for groundwater elevation monitoring and slug testing. Continuous lithologic cores
will be collected during the sonic drilling to the total depth of the borings. Representative lithologic
samples will be sent to a geotechnical laboratory, subcontracted by the driller, to perform grain size
analysis and Atterberg limits. A Jacobs geologist will describe the lithologic cores and compile well
construction diagrams.
The objectives of the sonic borings will be:
• Identify the elevations at which the uppermost significant restrictive layer (aquitard) occurs.
• Install monitoring wells/piezometers across the water table in order to map its elevation.
• Investigate hydraulic properties and lithology of potentially restrictive layers.
• Install monitoring wells/temporarily piezometers within potentially restrictive layers in order to
conduct hydrogeologic testing (i.e., slug tests) and to observe the responses of one, 10-day
loading test.
2.2 Monitoring Well and Piezometer Installation
Once drilling has reached the target depth, 2-inch diameter groundwater monitoring wells will be
constructed in the boreholes. At least two of the monitoring wells will be installed as nests with
screened intervals set to monitor different hydrogeologic layers. These nested wells will be used to
determine aquifer/aquitard properties and to define vertical hydraulic gradients at the site.
Three series of wells will be constructed as follows:
o Wingard Temporary Basin (WTB): 7, 2-inch diameter WTB Wells (1 nested — center
of the temporary loading basin)
7 groundwater monitoring points (estimated depths approximately 50-70
feet bls)
o Wingard Temporary Groundwater (WTG): 6, 2-inch diameter WTG Wells (one
nested location)
6 groundwater monitoring points (estimated depths approximately 50 — 70
feet bls)
o Wingard Temporary Stilling (WTS): 2, 1-inch diameter WTS Wells
2 Surface water monitoring points, could convert to deeper groundwater
monitoring points if inundated land surface does not exist at location
(estimated depths approximately 5 — 20 feet bls), due to equipment access
issues, the WTS wells will be installed using jetting or other hand installation
methods.
Notes: Figure 2
1. Sources: Aerial Imagery, Topographic Map, ESRI 2021: N Fleid Study General Map
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Figure 2
In addition to the wells and stilling basins,
A site survey will be conducted to determine the horizontal coordinates and measuring point
elevations (top of casing) at each installed piezometer and observation well. Additionally, surveying
will record the land surface elevation at each measuring point. Surveying will be conducted by a
Florida -licensed surveyor. Based on the unknown condition of the prospective investigation site,
access and condition of the site could potentially have a cost impact on the time needed to
complete survey activities.
Task 3 -- Conceptual Design TM
Jacobs will prepare a characterization of current and projected reclaimed water flow and quality
information for the Crestview WWTP. This information will include a process flow diagram for the
WWTP and infiltration system, projected wastewater flows for the design period, peaking factors,
and reclaimed water quality.
A conceptual site plan showing transmission piping and infiltration system facilities such as basins,
roads, distribution piping, buffer zones, and other miscellaneous facilities such as communications
and controls will be developed. The site plan and the detailed basis of design will be presented
within a Conceptual Design TM
Deliverables
Jacobs will provide the following deliverables as a result of this Task Order:
a Threatened and Endangered Species Survey Technical Memorandum
e Conceptual Design TM
Assumptions and Specific Conditions
The following assumptions have been taken into consideration in the preparation of this Scope of
Services and compensation. These assumptions are based on the project scope, which is to deliver
to the CLIENT an electronic copy of all technical memorandums.
Should deviations from these assumptions be required to deliver the services described in this scope
of services, the scope of work and compensation shall be modified accordingly and approved by the
CLIENT in writing before any changes to this scope of services can be implemented or delivery of the
original scope of services completed.
d Field analyses and evaluations will be performed on the Wingard parcel with an area of 48.7
acres.
WTS Wells 1 and 2 will be removed after the completion of the field study activities which
are proposed to be performed in a subsequent task order Costs associated with the WTS
Well removal is not included in this task order. All other WTG and WTB wells will be
abandoned during construction of the infiltration system and the abandonment cost is not
included in this task order.
Article C. Project Schedule
Work will begin upon execution of this task order. A preliminary milestone schedule is shown
below.
TABLE 1- PRELIMINARY SCHEDULE
Site -Specific Field Studies for Wingard Property Infiltration System
Task Projected Completion Date
Task 1 - Endangered and Threatened Species Assessment Within 11 weeks of NTP
Task 2 - Field Investigations Within 13 weeks of NTP
Task 3 - Conceptual Design TM Within 17 weeks of completion of NTP
Article D. Compensation
As compensation for providing the services described in Article B. Scope of Services of this task
order, the CLIENT shall pay Jacobs in accordance with Section 5 of the Agreement, on a time and
material basis with a not -to -exceed amount of $148,900. This amount includes work performed by
drilling and surveying subcontractors. The estimated breakdown of fees is shown in Table 2 below.
TABLE 2 - ESTIMATED FEE SUMMARY
Site -Specific Field Studies for Wingard Property Infiltration System
Task
Task 1 - Endangered and Threatened Species Assessment
Task 2 - Field Investigations
Task 3 - Conceptual Design TM
Field Work Travel Expenses
Field Work General Expenses
Geotechnical Driller Allowance
Land Surveyor Allowance
Total
Estimated Fee Amount
$11,500
$9,900
$24,630
$750
$600
$86,520
$15,000
$148,900
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Article E. Authorized Representatives
The Authorized Representatives designated below are authorized to act with respect to Task
Order 2022-01. Communications between the parties and between Jacobs's subcontractors shall be
through the Authorized Representatives:
For the City of Crestview, Florida For Jacobs Engineering Group Inc.
Name: Wayne Steele
Address: P.O. Drawer 1209
Crestview, Florida 32536
Telephone: (850) 682-6134
Article F. Authorization:
Task Order 2022-01 is effective as of I - ) o , 2022
Accepted for CLIENT by:
Name: J.B. Whitten
Title: Mayor
Name Scott Jernigan
Address: 25 W. Cedar Street, Suite 350
Pensacola, Florida 32502
Telephone: (850) 941-7282
Accepted for Jacobs Engineering Group Inc. by:
Name: Nick Freeman, P.E.
Title: Vice President
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