HomeMy Public PortalAboutTO 2022-04 Rapid Rate Infiltration Basin Expansion WWTP - RIBS Prof Serv - JacobsTASK ORDER 2022 - 04
THIS TASK ORDER IS ISSUED PURSUANT TO THE STANDARD MASTER AGREEMENT FOR PROFESSIONAL
SERVICES DATED MAY 03, 2021 (AGREEMENT), FOR THE CITY OF CRESTVIEW, FLORIDA, WHICH IS
INCORPORATED HEREIN BY THIS REFERENCE, WITH RESPECT TO
Professional Engineering and Consulting Services for the Rapid -Rate
Infiltration Basin Expansion Preliminary Design and Permitting
Article A. Purpose
The City of Crestview (City) 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
Engineers, Inc., a wholly -owned subsidiary of Jacobs Engineering Group (Jacobs) 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 a field study on the existing RIB siteto collect additional data to support a
substantial modification of the current operating permit to increase the permitted disposal
capacity of the RIB system.
The City has identified a parcel of land located northeast of the WWTP site (RIB 6 property)
as another potential reuse disposal site. The construction of RIBS on this property is required
to meet the City's rapidly growing wastewater disposal needs. The purpose of Task Order
2022-04 is to authorize and direct Jacobs to proceed with the professional engineering and
consulting services for site -specific evaluations, preliminary design and permitting of a new
infiltration system on the RIB 6 property.
Article B. Scope of Services:
Project Understanding
A forested, vacant land parcel adjacent to the Crestview WWTP, referred to herein as the RIB
6 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 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 RIB 6
parcel.
EXISTING SPRAY FIELD
FIGURE 1 - CRESTVIEW WWTP AND RIB 6 SITE PLAN
This project will include site -specific field investigations of the parcel, including, surface and
groundwater sampling and hydrogeologic conditions. A hydraulic loading evaluation and
groundwater modeling will also be performed to provide data required to prepare the
preliminary design documents and submit an application for a Florida Department of
Environmental Protection (FDEP) construction permit.
The scope of services provided with this task order is outlined in detail below.
Task 1 - Site Investigations
Site -specific investigations will be required to obtain the data needed to evaluate site
suitability, capacity, design requirements, and potential impacts of an infiltration system. The
site -specific investigations, which will be completed as part of this task, include a general
assessment of site characteristics, a hydrogeologic investigation, and surface water survey.
Jacobs will conduct a hydrogeologic investigation to evaluate the capability of the proposed
project site to perform successfully on a long-term basis. Information from the investigation
will also be used to develop a numerical groundwater flow model of the proposed RIB
system. Jacobs will utilize the monitoring wells installed in Task Order 2022-01 to perform
the hydraulic testing described in the subtasks below. Refer to Figure 2 for the type and
locations of the borings and monitoring wells installed. This information will be used to
evaluate the proposed stand-alone RIB system within the RIB 6 parcel as described in Task 2
below.
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Task 1.1 - Hydraulic Testing
One, 20 -day hydraulic loading test will be conducted to estimate the surface and near -
surface infiltration capacity of the soils. The City will construct a shallow basin approximately
2 feet deep with a bottom area of approximately 625 square feet (25 feet by 25 feet) and
impermeable side walls using a backhoe.. The loading test will be conducted by maintaining
a minimum of 0.5 feet of water in the test basin for the 20 -day test period while recording
the flow rate, ponded water depth, and rainfall depth. The loading test period may be
shortened if steady-state groundwater elevations beneath the basin are achieved prior to the
end of the 20 -day loading period. The initial flow rate into the test basin is expected to be
approximately 40 gpm with a steady-state rate of less than 10 gpm.
The basin will be constructed in the immediate vicinity of the 2 -inch diameter groundwater
wells (WTB series) shown in Figure 2. Jacobs will continuously monitor water levels in up to
10 strategically placed monitoring points 5 days prior to the infiltration test, during the test,
and for an additional 7 days after the loading test has ceased, resulting in continuous
monitoring of approximately one month. Source water for the basin test will be obtained
from the Crestview WWTP in the vicinity of the sludge drying beds via a temporary, 1 -1/2 -
inch Schedule 40 PVC, above -ground pipeline. The temporary pipeline will be installed by
Jacobs O&M group with an estimated maximum length of 1,200 feet.
Slug testing will be conducted using selected 2 -inch diameter groundwater wells previously
installed. A minimum of five slug tests will be performed.
Task 1.2 - Data Reduction
The following information will be developed from the available published and site -specific
data gathered in Task 1.1 as well as collected in Task Order 2022-01 and will be included in
the engineering report:
• General site description, including various property owners and boundaries in the vicinity
of the infiltration system.
• Geologic information from available literature including information concerning sinkhole
features within one mile of the site
• Identification, extent, and characterization of shallow aquifer horizons and potential
aquitard (low -permeability) horizons underlying the site
• Water table elevations at the time of the hydrogeologic investigation
• Surface water classified pursuant to Chapter 62-302 that are located within one mile of
the site will be located on a map and described with respect to classification, average
elevation, uses, and approximate distance from the site. Jacobs will also use existing map
data and the wetlands survey conducted during the planning phase of this project under
Task Order 2022-01 to identify the extent of wetlands on the site.
• Direction and rate of existing groundwater flow
• Information on existing water supply wells (and monitoring wells, as appropriate) within
one mile of the site. This information will be compiled from existing data from the
Northwest Florida Water Management District, FDEP, and Okaloosa County records.
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Task 1.3 - Surface Water Background Sampling
Based on Jacobs's recent experience permitting infiltration system projects in Northwest
Florida, it is expected that the FDEP will be concerned about potential impacts to adjacent
streams and wetlands from the loading of reclaimed water to the infiltration system.
Therefore, Jacobs will collect one grab sample from each surface water body located on the
site and within one -quarter mile of the site. The samples will be shipped to a testing lab for
water quality and characterization testing to provide initial background data on the water
quality of these streams. Single grab samples will be collected at approximately WTS-2 as
shown on Figure 2. Another grab sample will be collected at the current RIB permit
background sampling point SW -7 located at intersection of Juniper Creek and powerline
right-of-way northeast of the proposed infiltration system site.
Deliverables
• Site Investigation Technical Memorandum
Task 2 - Hydraulic Loading and Groundwater Mounding Analysis
Jacobs will perform a groundwater mounding analysis of the proposed RIBs after completion
of Task 1. The purpose of this analysis is 1) to optimize the infiltration system design and
layout, estimate average annual recharge to groundwater and 2) evaluate the long-term
effects of loading on the surficial aquifer in the vicinity of the site. The mounding analysis will
be performed using the hydrogeological and geotechnical field data and other relevant data
collected in Task 1. These data will be used to construct and calibrate a numerical model of
the groundwater system.
The numerical model will be developed based on the existing steady state groundwater flow
model for the Crestview RIBs site. The domain of the model will be expanded, and the model
will be calibrated to the groundwater elevations generated from the groundwater level
measurements collected in Task 1. The model will be calibrated to both steady state and
transient conditions using site -wide groundwater elevation measurements and groundwater
elevation measurements collected during load testing.
The calibrated groundwater model will then be used to conduct simulations of various
infiltration system layouts and loading scenarios to optimize basin number, location, size,
shape, bottom area, and distribution to optimize steady-state disposal capacity. The effect of
transient (seasonal) loading rates will then be evaluated. This will be an iterative process and
will include refinement of the layout. Jacobs will prepare a technical memorandum
presenting the results of the groundwater mounding analysis and selected infiltration
system. This information will be incorporated into the PER.
Deliverables
• Hydraulic Loading and Groundwater Mounding Analysis Technical Memorandum
Task 3 - Evaluation of Long -Term Environmental Impacts
Information developed in the previous TMs will be used to evaluate the long-term impact of
the proposed project on the environmental resources of the area including:
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• Changes in the water table elevations due to natural fluctuations and the proposed
hydraulic loading rates at each site
• Prediction of the rate and direction of movement of the applied water
• Justification and documentation of using buffer zone minimum distance criteria and
selection of hydraulic loading rates
• Emergency overflow protection and operation during extreme wet weather events
• Design contingencies
• Impact on public health, safety and welfare.
Deliverables
• Long -Term Environmental Impacts Evaluation Technical Memorandum
Task 4 - Preliminary Design
During the preliminary design phase Jacobs will further develop the infiltration system
conceptual site plan based on results of field investigations and groundwater mounding
analysis. The preliminary design will include 30% design plans and a brief TM to identify the
basis of design. The design plans will consist of civil, process mechanical, structural, and
instrumentation and controls for new rapid -rate infiltration basins, effluent disposal pump
station and conveyance piping.
Jacobs will also develop a preliminary engineering report (PER) for the recommended
infiltration system based on results of the field investigations and groundwater mounding
analysis. The PER will be prepared using data, end -products, and conclusions from all
previous Tasks and TMs prepared for this project along with previous Tasks and TMs
prepared under Task Order 2022-01 and will include an executive summary.
An operations and maintenance (O&M) plan for the proposed facilities will also be
developed. This will include a schedule for basin loading based on the overall loading rate
determined for the site and maintenance activities. Additionally, a ground water monitoring
plan will also be prepared.
Deliverables
Jacobs will provide the following deliverables as a result of this task:
• One deliverable of the PER (two hard -copies and three external thumb drives) that is a
compilation of technical memorandums prepared including:
• TM's from Tasks 1 - 3 of Task Order 2022-01:
• Threatened and Endangered Species Survey TM
• Conceptual Design TM
• TM's from Tasks 1 - 4 of this Task Order:
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• Site Investigation TM, which will include results and analyses of Near -Surface Soils
Investigation, Hydrogeologic Investigation, and Surface Water Background Sampling
• Hydraulic Loading and Groundwater Mounding Analysis TM
• Long -Term Environmental Impacts Evaluation TM
• Preliminary Design Drawings
• Preliminary Design TM
• 0&M Plan Technical Memorandum, which will also include a proposed groundwater
monitoring plan for the infiltration system site.
Task 5 - Wastewater Permit Application
Jacobs will prepare the application for a wastewater permit to authorize the construction and
operation of the RIB 6 Property Reclaimed Water Infiltration System for the Crestview WWTP.
One pre -application meeting will be held with FDEP to ensure cohesion and to allow FDEP to
provide guidance upfront. Jacobs will fill out and complete FDEP Forms 62-620.910(1) and
62-620.910(2) and compile the preliminary engineering report for the rapid -rate infiltration
system. The TMs prepared for the previous tasks will be compiled into a PER. An executive
summary will also be prepared and included in the PER.
The PER will summarize the field data, present the groundwater mounding analysis, provide
a conceptual site plan for proposed onsite facilities, present a proposed groundwater
monitoring plan, and evaluate the long-term impact of the proposed project on
environmental resources of the area. The permit application and associated support
documents will be prepared as a single WWTP permit modification application for the RIB 6
infiltration system facilities, WWTP improvements, and conveyance facilities (pump stations
and pipelines) to transfer the reclaimed water to the new infiltration system site. Jacobs will
provide the City with two (2) hard copies and (3) external thumb drives containing PDF
copies of all submitted information. Jacobs will provide the FDEP with one (1) hard copy and
an electronic copy of the wastewater permit application package.
This task assumes that the City will submit the permit application fee to FDEP.
Jacobs will provide written responses for up to two reasonable requests for additional
information submitted by the FDEP to the City. The requests for additional information from
the FDEP agencies are sometimes difficult to anticipate, and the process is open to review by
several outside agencies, which can raise questions about new issues. Consequently,
additional services may be required after initial reviews of submittals are made. Additional
tasks may also be added to the scope of work, as they are required during the permitting
process, as requested by the City.
Deliverables
Jacobs will provide the following deliverables as a result of this task:
• FDEP permit application package
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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 City of each of the following: Two (2) hard copies and an electronic
PDF copy of the PER, which will include all technical memorandums; two (2) hard copies and
three (3) external thumb drives containing the complete wastewater permit application
materials for the infiltration system site.
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 City in writing before any changes to this scope of services can be
implemented or delivery of the original scope of services completed.
• Field analyses and evaluations will be performed on the RIB 6 parcel with an area of
48.7 acres.
• The level of effort for these Tasks are based on modeling and conceptual engineering
of one infiltration system method.
• Jacobs will use existing parcel boundary lines and topographic data available from
the survey performed by Jacob's subcontractor, Okaloosa County GIS and other
sources to prepare the design drawings.
• WTS Wells 1 and 2 will be removed by Jacobs after the completion of the Task 1 field
study activities. 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.
• The City will submit the permit application fee to FDEP.
• Surface water sampling activities will be conducted by the same vendor (The Water
Spigot) that currently conducts quarterly permit compliance groundwater and
surface water sampling for the Crestview WWTP.
• Jacobs will reasonably rely upon the accuracy, timeliness, and completeness of
information gathered and or provided by governing agencies, the City and other
industry sources.
• The information gathered from the soil borings and site investigations in this task will
be relied upon to permit and prepare the design and ready for bid documents. The
site investigation will include sampling and monitoring at various locations across the
site; however, actual soil and groundwater characteristics may vary between sampling
locations and times. Because of the inherent uncertainties in subsurface evaluations,
unanticipated underground conditions may be encountered that are outside Jacobs
control and therefore may not be held liable for unforeseen changes required during
construction.
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Article C. Project Schedule
Work will begin upon execution of this task order. A preliminary milestone schedule is shown
below.
TABLE 1 - PRELIMINARY SCHEDULE
Rapid -Rate Infiltration Basin Expansion Preliminary Design and Permitting
Task
Projected Completion Date
Task 1 - Site Investigations
Task 2 - Hydraulic Loading and Groundwater Mounding Analysis
Task 3 - Evaluation of Long -Term Environmental Impacts
Task 4 - Preliminary Design
Task 5 - Wastewater Permit Application
- Submit draft permit application & PER for City Review
- Submit final permit application & PER to FDEP
Within 11 weeks of NTP
Within 8 weeks of completion of Task 1
Within 2 weeks of completion of Task 2
Within 15 weeks of completion of Task 3
Within 3 weeks of completion of Task 4,
approximately 36 weeks from NTP
Within 2 weeks of receiving all review
comments from the City; approximately 38
weeks from NTP
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Article D. Compensation
As compensation for providing the services described in Article B. Scope of Services of this
task order, the City shall pay Jacobs in accordance with Section 5 of the Agreement, on a
time and material basis with a not -to -exceed amount of $346,300. The estimated
breakdown of fees is shown in Table 2 below.
TABLE 2 - ESTIMATED FEE SUMMARY
Rapid -Rate Infiltration Basin Expansion Preliminary Design and Permitting
Task Estimated Fee Amount
Task 1 - Site Investigations $112,800
Task 2 - Hydraulic Loading and Groundwater Mounding Analysis $79,600
Task 3 - Evaluation of Long -Term Environmental Impacts $16,400
Task 4 - Preliminary Design $79,200
Task 5 - Wastewater Permit Application $23,700
Field Work Travel Expenses $6,000
Field Work General Expenses $2,500
Data Collection Equipment Rental Allowance $24,000
Surface Water and Groundwater Sample Laboratory Analysis $2,100
Al lowance
Total $346,300
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Article E. Authorized Representatives
The Authorized Representatives designated below are authorized to act with respect to Task
Order 2022-04. Communications between the parties and between Jacobs's subcontractors
shall be through the Authorized Representatives:
For the City of Crestview, Florida
For Jacobs
Name: Wayne Steele
Name Scott Jernigan
Address: P.O. Drawer 1209
Crestview, Florida 32536
Address: 25 W. Cedar Street, Suite 350
Pensacola, Florida 32502
Telephone: (850) 682-6134
Telephone: (850) 941-7282
Article F. Authorization:
Task Order 2022-04 is effective as of 9 --.1?, , 2022
Accepted for Cit by:
Accepted for Jacobs by:
,tom'
ame: J.B. Whitten
Name: Nick Freeman
Title: Mayor
Title: Principal Project Manager
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