HomeMy WebLinkAbout2021-082DAMENDMENT 2 TO WORK ORDER 5
GROUNDWATER MODELING AND IMPACT EVALUATION IN SUPPORT OF
MODIFICATION OF WATER USE .PERMIT NUMBEER 10524
This Amendment 2 to Work Order Number 5 is entered into as of this 8th day of June, 2021,
pursuant to that certain Continuing Contract Agreement, dated April 17, 2018, renewedand amended
as of May 18, 2021 (collectively referred to as the "Agreement"), by and between INDIAN RIVER
COUNTY, a political subdivision of the State of Florida ("COUNTY") and CDM Smith ("Consultant").
The COUNTY has selected the Consultant to perform the professional services set forth in existing Work Order
Number 5, effective date December 3, 2019.
2. The COUNTY and the Consultant desire to amend this Work Order as set forth on Exhibit A (Scope of Work)
attached to this Amendment and made part hereof by this reference. The professional services will be
performed by the Consultant for the fee schedule set forth in Exhibit B-1 and Exhibit B-2 (Fee Schedules), all in
accordance with the terms and provisions set forth in the Agreement.
3. From and after the Effective Date of this Amendment, the above -referenced Work Order is amended as set
forth in this Amendment. Pursuant to paragraph 1.4 of the Agreement, nothing contained in any Work Order
shall conflict with the terms of the Agreement and the terms of the Agreement shall be deemed to be
incorporated in each individual Work Order as if fully set forth herein.
IN WITNESS WHEREOF, the parties hereto have executed this Work Order as of the date first written above.
CONSULTANT:
By: �Xj -
Print Name: Eric J. Grotke, PE, BCEE
Title: Vice President
°'ZjSY C_ Ohfiy��'
BOARD OF -COUNTY COMMISSIONEf
OF INDIAN RIVER COUNTY n
By: rel i
�•- /�I�1�' , •'SOP
F��OUPlTY ��� • .
BCC Approved Date: June 8, 2021
Attest: JeffrenyA R..JSmith,
/)Clerk
of Court and Comptroller
By:��'
a
Deputy Clerk
Approved:
County Administrator
Approved as to form and legal sufficiency:
e
Dylan T. Reingold, County Attorney
EXHIBIT A
CCNA-2018 WO NO.5
AMENDMENT NO. 2
Ze7;l
INDIAN RIVER COUNTY UTILITIES
ADDITIONAL GROUNDWATER MODELING SIMULATIONS IN SUPPORT
OF MODIFICATION OF WATER USE PERMIT NUMBER 10524
This Amendment, when executed, shall be incorporated in and become part of the Agreement for
Professional Services (Contract #2018008) between Indian River County (OWNER), and CDM Smith Inc.
(CONSULTANT), dated April 17, 2018, extended and amended May 18, 2021, hereafter referred to as the
Agreement.
PROJECT BACKGROUND
The OWNER operates two Water Treatment Plants (WTPs), the South County WTP and North County
WTP. The South County WTP withdraws groundwater from seven existing Upper Floridan Aquifer (UFA)
production wells, while the North County WTP relies on groundwater from nine existing UFA production
wells. OWNERS's existing Consumptive Use Permit (CUP) (10524) currently allows for a total combined
groundwater withdrawal allocation of 12.838 million gallons per day [mgd], with 6.438 mgd from the
North County wellfield and 6.40 mgd from the South County wellfield.
The current CUP expires on October 11, 2031. OWNER has experienced an increase in demand due to
population growth and domestic self -supply users switching over to OWNER's water supply. OWNER
began a draft application requesting modification of the existing CUP to the St. Johns River Water
Management District (SJRWMD) in 2016. Groundwater modeling was performed to determine if there
would be impacts on the water resources, environment, or other permitted users due to the anticipated
increases in OWNER withdrawals from the UFA. CONSULTANT used a modified version of the South
Florida Water Management District (SFWMD) East Coast Floridan Aquifer Model (ECFM) to perform the
impact analysis for the UFA. Since the ECFM did not include the Surficial Aquifer System (SAS), the
SJRWMD Coupled Aquifer (COUAQ) model was used to determine the drawdown if any in the Surficial
Aquifer System (SAS) due to increased pumping'and groundwater level drawdown in the UFA. The
groundwater modeling results and analysis were summarized in a report that along with the model
input and output files were submitted to the SJRWMD in support of the draft CUP application. SJRWMD
staff previously approved the model as the best tool available for UFA uses in the area and the results of
the modeling and impact evaluations.
Due to the resurgence of development, the OWNER must now modify the permit to account for the new
and future demand projections. Based on actual groundwater withdrawals and an -approximate 2
percent increase in demands overtime (including an expanded service area), the 2050 demand was
calculated to be 23.18 mgd. This is an increase from the existing EOP withdrawal of 12.838 mgd, which
was used in the draft 2016 CUP application and the associated groundwater modeling and impact
analysis.
Simth Page 1 of 6 jJaoos_e■n b �.ao�
After the CONSULTANT received notice -to -proceed for WO No.5, the OWNER requested that three
additional modeling simulations be conducted to determine the withdrawal flow split between the
north and south wellfields. Also, the OWNER requested approval from the SJRWMD to use the existing
calibrated groundwater models developed by the CONSULTANT in 2016 for the 2020 CUP modification.
On January 13, 2020, SJRWMD provided approval for the use of the model but requested that a
revised/updated groundwater modeling plan be submitted to the District for review and approval.
Amendment 1 was issued to provide the three additional modeling simulations and revision of the 2016
groundwater modeling plan.
In addition to North County and South County wellfields, the OWNER is now considering three other
groundwater withdrawal alternatives. The first alternative is to move the additional requested allocation
to a potential new UFA wellfield on County -owned property in the western part of the County to
distribute the pumping, reduce groundwater level drawdown and reduce the potential impacts to
existing legal users of the UFA. The second alternative is to move a portion of the requested allocation
to the Avon Park Permeable Zone (APPZ) located below the, UFA at both the north and south wellfields.
The third alternative will consider pumping from the County's existing wellfield at an interim allocation
based on short-term projected demand. The OWNERS withdrawal allocation under their exiting CUP is
12.84 mgd from 2021-2031 and does not provide for any growth in demand over this time period. This
alternative would provide County time to analyze the first two alternatives and finalize the one to satisfy
County's long-term water supply needs. Additional modeling simulations are therefore necessary to
determine whether these three new wellfield alternatives will cause any adverse impacts to water
resources, environmental resources, and other existing legal users.
This Amendment has been developed to provide the additional groundwater modeling services
requested by the OWNER.
SCOPE OF WORK
The following is a description of the work to be provided under this Amendment.
TASK 1- ADDITIONAL GROUNDWATER MODELING SIMULATIONS
The CONSULTANT will perform three additional groundwater model simulations with the modified ECFM
to determine if the three new wellfield alternatives will cause any adverse impacts to water resources,
environmental resources, and other legal users. The modified ECFM model was used during previous
permit modification attempt in 2016 and has been approved by SJRWMD for use in support of the
current CUP modification.
The three groundwater modeling simulations will be performed using the End -of -Permit (EOP)
withdrawals for all permitted users and OWNER wells pumping at the requested allocation increase. A
detailed description of these three simulations is listed below:
1. Simulation 7 (SIM7) — Existing North County and South County wellfield wells will be pumping at
their current permitted allocation of 12.84 mgd. The requested additional allocation of 10.34
mgd to will be withdrawn from the proposed West County wellfield. The combined withdrawals
from the existing and proposed wellfields will be 23.18 mgd. Other legal user wells within the
model domain pumping at their current EOP withdrawal rate, except for the agricultural use
wells whose EOP allocations will be adjusted to 5 in 10 -year factors provided by SJRWMD.
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Simulation 8 (SIMS) — Existing North County and South County wellfield wells will be pumping at
their current permitted allocation of 12.84 mgd. The requested additional allocation of 10.34
mgd will be evenly split between the two proposed APPZ wellfields, one located near the North
County Wellfield and the other located near the South County Wellfield. The combined
withdrawals from the existing and proposed wellfields will be 23.18 mgd. Other existing legal
user wells within the model domain pumping at their current EOP withdrawal rate, except for
the agricultural use wells whose EOP allocations will be adjusted to 5 in 10 -year factors provided
by SJ RW M D.
Simulation 9 (SIM9) - Existing North County and South County wellfield wells will be pumped at a
combined pumping rate that affects the smallest number of other existing legal users. This
pumping rate will be obtained by an iterative process of increasing the pumping rate from 12.84
mgd until arriving at a pumping rate that produces impacts to the smallest number of other
existing legal users. Other existing legal user wells within the model domain pumping at their
current EOP withdrawal rate, except for the agricultural use wells whose EOP allocations will be
adjusted to 5 and 10 -year factors provided by SJRWMD.
Simulations 7, 8, and 9 will be used by the CONSULTANT and OWNER in determining the groundwater
level drawdown due to the total proposed OWNER EOP withdrawal occurring from each wellfield. The
deliverable for this task will be maps showing the cone of depression (groundwater level drawdown) for
each wellfield pumping scenario and contours of cumulative groundwater level drawdown due to
pumping. The results of these simulations are for OWNER internal purposes only and will not be
submitted to SJRWMD in the groundwater modeling and impact evaluation.
TASK 2 - PROJECT AND QUALITY MANAGEMENT
Activities performed under this task consist of those general functions required to maintain the project
on schedule, within budget, and that the quality of the work products defined within this Work Order is
consistent with CONSULTANT's standards and the OWNER's requirements. Specific activities included
are identified below:
Subtask 2.1- Project Quality Management
CONSULTANT maintains a Quality Management System (QMS) on all projects. In accordance with the
QMS, a project planning and scope review meeting will be conducted at the start of the project. In
addition, the CONSULTANT's Technical Specialists will perform a quality review of the maps identified in
Task 1.
Subtask 2.2 - Project Status Reports
CONSULTANT's project manager will prepare and submit monthly written status reports with each
invoice for an anticipated project duration of 1 month.
OTHER SERVICES NOT INCLUDED IN THIS WORK ORDER
This Work Order does not include the following items;
• Identifying potential wellfield or well locations in the western part of Indian River County;
• Identifying potential wellfield or well locations near the South County and North County
Wellfields for the proposed APPZ wellfields; and
Smith Page 3 of 6 j13005_Exhlbits.doa
• Identifying 10 -year future demand based on population projections and historic demand and
water use.
OWNER'S RESPONSIBILITIES
The OWNER will provide all available data requested by the CONSULTANT for the purpose of completing
the aforementioned tasks. The data necessary for this project are, but not limited to the following:
• To identify potential locations for an UFA wellfield in the western part of Indian River County.
• To identify potential locations for two new APPZ wellfields and wells. One of the new APPZ
wellfields will be located near the existing North County Wellfield and another will be located
near the existing South County Wellfield.
• To provide historic pumping data from North County and South County wellfields.
• To provide future demand based on population projections and desired withdrawal split
between North County and South County wellfields.
The OWNER will also provide a timely review of all work products.
SCHEDULE
It is anticipated that this Amendment 2 will extend the project schedule by 1 month, starting within two
weeks of receipt of a formal notice to proceed (NTP) of this Amendment and receipt of all data
requested by the CONSULTANT. The schedule is dependent on the OWNER providing the modeling
inputs described in this Amendment. CONSULTANT will prepare an updated detailed schedule within the
first 10 calendar days after Notice -to -Proceed of Amendment 2.
COMPENSATION AND PAYMENT
Compensation for the work described in this Amendment shall be made on the basis of a lump sum fee.
The lump sum fee for Tasks 1, and 2, inclusive, is $42,180 as shown in Exhibits B-1 and B-2: The
amended Work Order No. 5 lump sum amount is $130,270 CONSULTANT will invoice OWNER on a
monthly basis based on percent complete. For invoice purposes only, the value of each task is as shown
in the Table 1.
Table 1 Estimated Budget for Amendment 2 to Work Order No. 5
TASK VALUE FOR INVOICE PURPOSES
TASK DESCRIPTION
VALUE
1 Additional Groundwater Modeling Simulations
$38,725
2 Project and Quality Management
$3,455
TOTAL WORK ORDER NO. 5 AMMENDMENT 2- LUMP SUM
$42,180
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EXHIBIT B-1
INDIAN RIVER COUNTY UTILITIES
Amendment No. 2 -ADDITIONAL GROUNDWATER MODELING SIMULATIONS IN SUPPORTOF MODIFICATION OF WATER USE PERMIT NUMBER 10524
2018 Rates: 5245 5240 5220 5180 5135 Sinn 595
Task
Senior Officer
Senior
Technical
Expert
Associate
Senior
Professional
Senior
Support
Staff Support
Services
Document Control Other Direct
Specialist Costs
Hours
Totals
Labor
Labor +OOC
Task 1— Additional Groundwater Modeling Simulations
1
44
0
144
18
0
$200
207
$38,525.00
$38,725.00
Subtotal
1
44
0
144
0
18
0
207
SubtotalAmount
$245
1 $10,560
$0
$25,920
$0
$1,800
$0
$200
$38,515.00
$38,715.00
Task 2—Project and Quality Management
Subtask 2.1- Project Quality Management
1
0
4
5
3
0
2
IS
$2,620.00
$2,620.00
Subtask 2.2 - Project Status Reports
0
0
2
1
0
2
$150.00
5
$685.00
$835.00
Subtotal Hours
1
0
4
7
4
0
4
20
SubtotalAmount
$245
$0
$880
$1,260
$540
$0
$380
$150
$3,305.00
$3,455.00
TOTAL HOURS
2
44
4
151
4
1
18
4
227
TOTALAMOUNTJ
$490.00
1 $10,560.00
$880.00
$27,180.00
$540.00
$1,800.00
$380.00
$350.00
$0.00
$41,830.00
$42,180.00
Smith Page 5 Of 6 ll3005_Ixnlbits.daa
EXHIBIT B-2
BUDGET
INDIAN RIVER COUNTY UTILITIES
Amendment No. 2 - ADDITIONAL GROUNDWATER MODELING SIMULATIONS IN
SUPPORTOF MODIFICATION OF WATER USE PERMIT NUMBER 10524
TOTAL LABOR COST
OTHER DIRECT COSTS
TOTAL WORK ORDER AMOUNT
41830
350
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As Outlined in the Scope of Services,
Description:
Exhibit "A
Reference:
Agreement Between Indian River County
Utilities and CDM Smith Inc.
Labor Category
Hours
Rate
Labor
Senior Officer
2
$245
$490
Senior Technical Expert
44
$240
$10,560
Associate
4
$220
$880
Senior Professional
151
$180
$27,180
Senior Support Services
4
$135
$540
Staff Support Services
18
$100
$1,800
Document Control Specialist
4
$95
$380
TOTAL HOURS
227
TOTAL LABOR COST
OTHER DIRECT COSTS
TOTAL WORK ORDER AMOUNT
41830
350
Smtil Page 6 of 6 Jj30o5_Fxhibits.doa