Contract 2025-026AOTETRA TECH
January 22, 2025
Mr. Stoney Brunson
City of Clermont
3335 Hancock Rd.
Clermont, FL 34711
Subject: City of Clermont
Professional Services Proposal for the
Response to the SJRWMD Request for Additional Information Modification of
Consumptive Use Permit #2478
Project #: 200-BPClermont
Dear Mr. Brunson:
Tetra Tech is pleased to furnish this proposal for professional services associated with responding to
the St. Johns River Water Management District's request for additional information resulting from the
application to modify the City's consumptive use permit. Additional details along with a cost
breakdown have been included in the detailed scope of services attached hereto.
If you have any questions, please contact me or Mr. Charles W. Drake, PG, at your convenience at 407-
839-3955.
Very truly yours,
Tetra Tech
. Fox, P.E.
ice President
Attachments
c: Miguel Garcia, PG, Tetra Tech
JDF/pt/Clermont/Mod of CUP#2478
Approved:
City of Clermont
Tetra Tech, Inc.
201 E. Pine Street, Suite 1000, Orlando, FL 32801
Tel 407.839.3955 Fax 407.839.3790 www.tetratech.com
ATTACHMENT A
SCOPE OF SERVICES
CITY OF CLERMONT, FLORIDA
REQUEST FOR ADDITIONAL INFORMATION RESPONSE
FOR MODIFICATION OF CONSUMPTIVE USE PERMIT #2478
PROJECT DESCRIPTION
Tetra Tech provided the necessary hydrological and engineering services required to prepare and submit
an application and supporting documentation to modify the City of Clermont's (City) St. Johns River Water
Management District (SJRWMD) Consumptive Use Permit (CUP) that included an increase in allocation
from the existing Upper Floridan aquifer (UFA) and Lower Floridan aquifer (LFA) potable supply wells.
The City desired to modify CUP #2478 to increase allocation from existing UFA and LFA wells on the
eastern side of the City's service area. The current CUP was issued June 24, 2020, and is set to expire on
October 11, 2031. The existing permitted allocation is as follows:
• Prior to LFA wells East-8 and East-9 being placed into service:
- 2,887.09 million gallons (7.91 mgd average) in 2020 through 2031
• After LFA wells East-8 and East-9 have been placed into service:
- 2,887.09 million gallons (7.91 mgd average) in 2020 through 2024
- 3,527.72 million gallons (9.66 mgd average) in 2025 through 2031
The City has constructed and tested two (2) new LFA production wells (East 8 and 9) at the Sunburst WTP
to meet a portion of these future demands and to reduce reliance on existing UFA wells at the Sunburst
WTP. The new LFA wells are not yet in production but are expected to be online in early 2025 and will
allow the City to reduce its reliance on the UFA from wells on the west side of the potable supply system.
Based on historical and current potable and reclaimed water demands, projected demands above the
permitted amounts shown above will be required to serve existing and future customers and at least one
(1) additional LFA well will need to be constructed to provide the City's required future demand.
II. SCOPE OF SERVICES
Under Continuing Services Agreement No. 2023-070, Tetra Tech, Inc. provided the necessary professional
services to prepare and submit the consumptive use permit (CUP) application for the City's potable supply
system. On November 25, 2024, the SJRWMD issued a request for additional information (RAI), which is
attached for reference. City staff and Tetra Tech subsequently reviewed the items with the SJRWMD to
clarify what would be expected on the RAI response. Based upon those conversations, Tetra Tech will
prepare the RAI response Items 1 through 11, which are considered to be beyond the original scope of
services and are subject to additional compensation.
JDF/pt/Mod of CUP 2478 Scope_012225
Tt #BP Clermont -1- 012225
NTETRA TECH
This request covers the additional scope of services and associated costs described as follows:
Item #1: Tetra Tech will prepare the response for the CUP permit term request of 1S-years with
justification for the extended permit term.
Item #2: Tetra Tech will review and revise the Summary of Groundwater Sources table and prepare a
response.
Item #3: City will provide the requested shapefiles for the current and projected service area
boundaries. Tetra Tech will review the data provided and compare against existing shapefiles
and prepare responses.
Item #4: City will provide information regarding the water treatment reject volumes and the most
recent water loss audit data. Tetra Tech will review the data provided and prepare responses.
Item #S: Tetra Tech will compile data specific to CFWI rules and will prepare responses.
Item #6: City will provide requested information regarding use of lowest acceptable quality sources of
water within the service area. Tetra Tech will review the information provided and prepare
responses.
Item #7: City will provide information regarding supplementation of the reclaimed system with
groundwater. Tetra Tech will review the information provided and prepare responses.
Item #8: Tetra Tech will revise the City's Water Conservation Plan to include as appropriate the
requested District recommendations and will prepare responses.
Item #9: City will provide data regarding the water loss reduction program within the system and Tetra
Tech will review and prepare responses.
Item #10: Tetra Tech will prepare the Groundwater Modeling Plan (GMP), as requested by the SJRWMD.
The GMP will describe the scenarios to be tested, the anticipated impact simulations, and the
procedures for running the model and assessing model results. The anticipated impact
simulations to be described in the GMP and run in the Task 11 scope are:
• Simulation #1- Run existing CUP allocation (base case) using the unmodified ECFTX v.2
model.
• Simulation #2- Run proposed CUP allocations without base case pumping using the
unmodified ECFTX v.2 model.
• Simulation #3- Run cumulative base case and proposed CUP allocations using the
unmodified ECFTX v.2 model.
The GMP will also outline additional conditional modeling activities in the event that Tetra
Tech and the City determine simulated impacts to be overly conservative and/or unfavorable.
Conditional on such an outcome and because the current ECFTXv.2 contains inaccurate
information regarding the depths and properties of aquifers and confining beds within the
Clermont service area, it may be necessary to modify ECFTXv.2. The GMP will outline
JDF/pt/Mod of CUP 2478 Scope_012225 O TETRA TECH
Tt #BP Clermont -2- 012225
justification for the model modification and the methodology by which Tetra Tech will revise
and re -calibrate the ECXTXv.2 model. As will be discussed in the GMP, re -calibration efforts
will constitute minor adjustments to aquifer parameters within the service area and will not
address aspects of the model outside of this area. All model revisions/ recalibration will be
conducted as a part of the response to Item 11 (below).
A draft GMP will be presented to the SJRWMD for review and approval and will include the
procedure for conducting the above simulations, a description of the analyses to assess the
need for ECFTXv.2 revisions (as needed), the procedure for revising ECFTXv.2 (as needed), and
a model -based approach to optimize pumping to minimize groundwater impacts. We
anticipate, and have budgeted for, several teleconferences with the SJRWMD staff on the
modeling approach. We understand from the SJRWMD staff that any changes to the ECFTXv.2
model will have to be reviewed by the SWFWMD staff because they are charged with the
modeling efforts.
Item #11a: Tetra Tech will conduct the modeling simulations and evaluate the simulation results as
outlined in the GMP (described in Item #10). We have provided line items in the budget to
run the simulations described, evaluate results of those simulations with respect to MFLs and
wetland impacts, provide documentation of the model preparation and simulations with
graphics depicting the drawdowns associated with each simulation, and perform two
additional simulations to assist in locating the new LFA in the south of the Sunburst WTP. This
optimization modeling will be performed under Task 11a. using the current ECFTXv.2 model.
It will also be incorporated if we have to revise ECFTXv.2.
Item 11b: Task 11b., if needed, will be to revise the current ECFTXv.2 model incorporating the site
specific hydrogeologic conditions in the area. We will run the revised model under the
pumping/ allocation conditions described in Item 10. The impact analysis and documentation
of the revisions will then be prepared.
At a minimum, the Tetra Tech will perform Item 11a. and the City will be billed for Task 11.a
at $21,019. Should revisions/ recalibration to ECFTXv.2 be warranted, and the City agrees, the
City will be billed for Task 11.b at $9,871, as well.
If the results of the groundwater modeling identify impacts to wetlands or surface water
bodies, then a hydrological and biological assessment of the impacted areas can be prepared.
Tetra Tech will work with SJRWMD wetland staff to prepare responses. A hydrologic
monitoring plan is not currently included in the scope of work. If groundwater modeling
results show substantial impacts to nearby wetlands, surface water bodies, and/or springs,
costs to prepare a hydrologic monitoring plan will be provided.
Teleconferences, Meetings, and Project Coordination:
Tetra Tech will prepare for and up to four (4) meetings or teleconferences with City and/or the SJRWMD
to discuss questions the City and Tetra Tech may have regarding SJRWMD-supplied modeling or other
data, and internal (City and Tetra Tech) meetings concerning the responses to the RAI and supporting
technical documentation.
JDF/pt/Mod of CUP 2478 Scope_012225
Tt #BP Clermont -3- 012225
NTETRATECH
III. COMPENSATION SUMMARY
The proposed lump sum compensation for the Scope of Services described in Section II is $71,786
(includes optional modeling, Task 11.b., of $9,871, if required). Attachment A presents a detailed
breakdown of estimated man-hours and per task compensation for the Scope of Services.
IV. SCHEDULE
Because the RAI due date is on or before February 25, 2025, we will request a time frame extension to
respond to the RAI. The proposed project schedule for completion of the Scope of Services described in
Section II is anticipated to be as follows:
A. Meetings with City/SJRWMD 150
B. RAI Preparation for Items #1 - #9 45
C. RAI Preparation for Items #10 - #11 150
D. RAI Preparation/Submittal
180
JDF/pt/Mod of CUP 2478 Scope_012225
Tt #BP Clermont -4- 012225
NTETRATECH
O Price Proposal
Labor Plan
ATTACHMENTS
8 Resources
Water Use Permit RAI Response
Submitted to: City of Clermont
(Attn: Stoney Brunson)
Contract Type: T&M
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Labor
Subs
Travel
Equip 0DCs
Task Pricing
Totals
Project Phases / Tasks
Total
Labor Hrs
428
79
io3
a9
1a
3z
so
s9
8
71,531
255
71,786
Task 1-Permit Term
8
4
4
1,736
1,736
Task 2- Groundwater Sources
8
2
4
2
1,356
1,356
Task 3- Location Mapping
8
2
6
1,316
1,316
Task 4- Demand Projections
12
2
6
4
2,100
2,100
Task 5-CFWI Issues
20
4
g
8
3,712
3,712
Task 6- Lowest AempteMe Water Quality
7
2
2
1
2
1,178
1,178
Task 7-Redaimed Water Supplementation
10
2
4
4
1,956
1,856
Task 8- Water Conservation
21
5
12
4
3,385
3,3a5
Task 9• Water Loss Reduction
14
3
7
4
2AN
2,406
Task 10: GW Modeling Plan
54
6
16
8
121
8
4
10,034
10,034
Task lea: Hydrologk and Biologic Assessment
a. Original ECFTXv.2 Modeling
b. Evaluation of wetlands, 5F, springs
Documentation
132
7
61
8
16
32
a
21,019
21,019
53
3
24
2
4
16
4
8,061
8,061
44
2
20
4
8
8
2
7,412
7,412
35
2
17
2
4
a
2
5,546
5,546
asc.
k Sib. - Optional Modeling (M Required
a. Revised ECFTXv.2 modeling _
72
2
20
2
4
40
4
9,873
9,871
72
2
20
2
4
40
4
9,871
9,871
Task 12- Meetings/ Project Management
62
3s
6
6
12
;71531
255
11,817
Totals
428
79
103
49
18
32 80
59
a
255
71 786
Tetra Tech - Confidential and Proprietary Page 1 of 1 Printed 1/22/2025
