HomeMy WebLinkAbout2020-045CCNA2018 AMENDMENT 1 WORK ORDER NUMBER 5
GROUNDWATER MODELING AND IMPACT EVALUATION IN SUPPORT OF
MODIFICATION OF WATER USE PERMIT NUMBER 10524
This Work Order Number 5 is entered into as of this 10 day of March , 2020, pursuant to that
certain Continuing Consulting Engineering Services Agreement for Professional Services entered into as
of this 17th day of April, 2018 (collectively referred to as the "Agreement"), by and between INDIAN
RIVER COUNTY, a political subdivision of the State of Florida ("COUNTY") and CDM Smith Inc. (CDM
Smith) ("Consultant").
1. 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
(Fee Schedule), and within the timeframe more particularly set forth in Exhibit C (Time Schedule), 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 Section 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.�outirYC
CONSULTANT: BOARD OF COUNTY COUNMI ` ERS
CDM Smith Inc. N RIVER CO TY : m
By: By: 'r
Print Name: Eric J. otke, P.E., BCEE Susan dams, Chairman �U/�rY F1 OR�pP••
Title: Vice President °^• •'
BCC Approved Date: March 10, 2020
Attest: Jeffrey R.SSmith,
�,Clerk ooff Cour and Comptroller -771/-&
By:
Approved:
Approved as to form and legal sufficiency:
Jason ! Bro n, County Administrator
ylan T. Reingold, County Attorney
EXHIBIT A
CCNA-2018 WO NO. 5
AMENDMENT 1
FOR
INDIAN RIVER COUNTY UTILITIES
ADDITIONAL GROUNDWATER MODELING SIMULATIONS AND PREPARATION OF REVISED
GROUNDWATER MODELING PLAN
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, hereafter referred to as the Agreement.
PROJECT BACKGROUND
The OWNER owns and 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 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 over time (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. Additional modeling simulations are therefore necessary to determine whether the new
CDM
Smith Page 1 of 4 ii2688_ExhibltA.ao.x
demand of 23.18 mgd will cause any adverse impacts to water resources, environmental resources, and
other legal users.
After the CONSULTANT received notice -to -proceed for WO No. 5 and the project kickoff meeting was
held with the OWNER, the OWNER requested that 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 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. These items were not included in WO No.5.
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 two additional groundwater model simulations with the modified ECFM
for the increased UFA allocation to determine the flow split between the north and south county WTP
wellfields for the proposed 2050 EOP withdrawal. The CONSULTANT will also perform a third additional
groundwater model simulation requested by SJRWMD referred to as "pumps off", which will be used for
the cumulative pumping impact scenario as described below. 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 two (2) groundwater modeling simulations will be performed using the End -of -Permit (EOP)
withdrawals for all permitted users and IRCU wells pumping at the requested allocation increase of
23.18 mgd. A detailed description of these two simulations are listed below:
1. Simulation 4 (SIM4) — Existing and proposed IRCU Hobart Park WTP wells will be pumped at
23.18 mgd and 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. The CONSULTANT has received a GIS shapefile from
SJRWMD containing EOP withdrawals for all permitted users within the model domain.
2. Simulation 5 (SIMS) — Existing and proposed IRCU South County WTP wells will be pumped at
23.18 mgd and 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.
3. Simulation 6 (SIM6) — All Existing Legal User withdrawals in the model domain are set to zero
("pumps off"). Simulated groundwater elevations from the cumulative EOP withdrawals for all
Existing Legal Users in the model domain are subtracted from the simulated groundwater
elevations from the "pumps off" simulation to calculate cumulative groundwater level
drawdown.
Smith Page 2 of 4 ;;2688_Exhlblt Adocx
Simulations 4 and 5 will be used by the CONSULTANT and OWNER in determining the groundwater level
drawdown due to the total proposed IRCU EOP withdrawal (23.18 mgd) occurring from each wellfield.
Since the relationship between pumping rate and groundwater level drawdown is linear in confined
aquifers, the maximum pumping rate can be determined for each wellfield that will not impact other
existing legal users of the UFA. Simulation 6 will be used as the baseline condition for determining
cumulative drawdown. 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 4 and 5 are for internal
purposes only and will not be submitted to SJRWMD in the groundwater modeling and impact
evaluation TM and/or described in the revised groundwater modeling plan. The results of Simulation 6
will be submitted to SJRWMD in the groundwater modeling and impact evaluation TM and described in
the revised groundwater modeling plan.
TASK 2 - PREPARATION OF REVISED GROUNDWATER MODELING PLAN
The CONSULTANT will modify/update the existing groundwater modeling plan developed and approved
by SJRWMD in 2016 to describe the three simulations listed in WO No. 5 and the methodology and data
to adjust the agricultural pumping from legal users in the model domain.
The draft modeling plan will be submitted to the OWNER for review and comment. The CONSULTANT
will incorporate comments provided by the OWNER into the plan and send the final plan to SJRWMD for
review and approval before starting the model simulations.
TASK 3 - 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 3.1 - 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 quality reviews of the deliverables
identified in Task 1.
Subtask 3.2 - Project Status Reports
CONSULTANT's project manager will prepare and submit monthly written status reports with each
invoice for an anticipated project duration of 4 months.
OTHER SERVICES NOT INCLUDED IN THIS WORK ORDER
This Work Order does not include the following items:
• Preparation of a Consumptive Use Permit application or permit fee; or
• Modeling changes for SJRWMD Requests for Additional Information.
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:
CDM
Smith Page 3 of 4 jj2688_Exhibit A.docn
To identify four new production well locations at the North Hobart Park Wellfield and six new
production well locations at the South Wellfield to be capable of producing 23.18 mgd from
each wellfield.
• To provide monthly water use data for the individual existing IRCUD production wells for the
past five years (2015-2019) in electronic format.
The OWNER will also provide a timely review of all work products.
SCHEDULE
Previously, it was anticipated that the Project will take a total of 3 months to complete, starting within
two weeks of receipt of a formal notice to proceed (NTP) on December 6, 2019. The groundwater
modeling report with impact evaluations was estimated to be completed within 90 days of Notice -to -
Proceed NTP was delayed until a project kickoff meeting could be scheduled in early January 2020. The
project Kickoff meeting was held on January 8, 2020 where the scope items in this amendment were
identified by the OWNER. This scope of work extends the schedule by 30 days for a total of 120 days
from January 8th, which corresponds to May 7, 2020. CONSULTANT will prepare an updated detailed
schedule within the first 10 calendar days after Notice -to -Proceed of Amendment 1.
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, 2 and 3, inclusive, is $23,290 as shown in Exhibits B-1 and B-2. The
amended Work Order No. 5 lump sum amount is $88,090. 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 1 to Work Order No. 5
TASK VALUE FOR INVOICE PURPOSES
TASK DESCRIPTION
VALUE
1 Additional Groundwater Modeling Simulations
$18,290
2 Preparation of Revised Groundwater Modeling Plan
$3,170
3 Project and Quality Management
$1,830
TOTAL WORK ORDER NO. 5 AMMENDMENT 1- LUMP SUM
$23,290
CDM
Smith Page 4 of 4 jj2688_Exhibit A.docx
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EXHIBIT B-2
BUDGET
INDIAN RIVER COUNTY UTILITIES
Additional Groundwater Modeling Simulations & Preparation of Revised
Groundwater Modeling Plan in Support of Modification of Water Use Permit
Number 10524
Description: As Outlined in the Scope of Services, Exhibit A
Reference: Agreement Between Indian River County Utilities
and CDM Smith Inc.
Labor Category
Hours
Rate
Labor
Senior Officer
2
$240
$480
Senior Technical Expert
24
$235
$5,640
Principal
4
$210
$840
Senior Professional
80
$175
$14,000
Professional 11
0
$140
$0
Staff Support Services
16
$95
$1,520
Document Control Specialist
4
$90
$360
TOTAL HOURS
130
TOTAL LABOR COST
$22,840
OTHER DIRECT COSTS
450
TOTAL WORK ORDER AMOUNT
523,290
CDM
Smith jj2688_Exhibit B-2.xlsx
EXHIBIT C
INDIAN RIVER COUNTY UTILITIES
ADDITIONAL GROUNDWATER MODELING SIMULATIONS & PREPARATION OF
REVISED GROUNDWATER DODELING PLAN IN SUPPORT OF MODIFICATION OF
WATER USE PERMIT NUMBER 10524
WO NO. 5 AMENDMENT 1 SCHEDULE
It is anticipated that the work included in this Amendment will take 30 days to complete, starting within
five (5) days of receipt of the executed Amendment and following the completion of the original scope of
services. The estimated schedule is as shown below. CONSULTANT will prepare an updated detailed
schedule within the first 10 calendar days after receipt of the Amendment.
TIME SCHEDULE
Executed Amendment Received By April 2, 2020
Technical Memorandum and Model Files May 7, 2020
*Dates subject to receipt of the executed Amendment and the OWNER's review of
work products
CDM
Smith C-1 jj2688-Exhibit C.docx