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HomeMy WebLinkAbout2025 06 18 Additional Information Provided by Mayor McCann06 18 2025 - Additional information provided and referenced by Mayor Kevin McCann at the June 18, 2025 City Commission Utilities Infrastructure Workshop 200 East Robinson Street, Suite 1400, Orlando, Florida 32801 P. 407.478.4642 F. 407.478.4643 Exhibit A City of Winter Springs Lake Jessup Reclaimed Water Augmentation Station – Feasibility Analysis January ͮͬͮͮ SCOPE OF SERVICES GENERAL The City of Winter Springs (CITY) owns the Lake Jessup Reclaimed Water Augmentation Station (Jessup RW Station), which is intended to augment their Public Access Reuse (PAR) supply when needed. However, due to issues related to the system filters, as well as the lack of infrastructure to divert non-PAR quality effluent, the CITY was forced to take the station offline. The CITY desires to recommission the station – contingent upon the associated labor and cost to make it fully operational and reliable. The purpose of this task is to provide the CITY with a Feasibility Analysis on the rehabilitation vs. replacement of the Jessup RW Station. Carollo Engineers, Inc., (CONSULTANT) will provide these engineering services to the CITY under the terms of the Agreement for Continuing Civil Engineering Services – Water, Wastewater, Reclaimed Water, and Stormwater Utility. The Feasibility Analysis will include a condition assessment of the mechanical and process equipment at the Jessup RW Station to determine what assets may require rehabilitation or replacement, along with an associated recommendation and construction cost. The proposed recommendation will have an emphasis on constructability and operability. Additionally, a task to investigate seasonal water quality of the St. Johns Reiver and surficial aquifer in the vicinity of the Jessup RW Station is included. Under this scope, the CONSULTANT and Connect Consulting, Inc. (SUBCONSULTANT) will also provide consulting services related to the investigation of a suspected artesian well located in the Parkstone neighborhood in Winter Springs (known as the Parkstone Artesian Well). The Parkstone Artesian Well is permitted under a Consumptive Use Permit (CUP) with the St Johns River Water Management District (SJRWMD). The well currently flows into an underground structure, which is then captured into a gravity pipe and flows into Lake Jessup. It is believed to be a historical agricultural well, which was abandoned during development of the Parkstone Community. However, it is also possible that this is a natural, surficial fracture. For unknown reasons, the development construction resulted in the inability to plug the artesian well, leaving the community with a free-flowing artesian well. Based on an initial meeting, it is understood that the Parkstone Community has continued to have challenges with the well, including settlement of the ground around it. Repairs have been completed City of Winter Springs Lake Jessup RW Augmentation Station – Feasibility Analysis Scope of Services Page ͮ by the Parkstone Community as this occurs. The CITY desires to provide support to the Parkstone Community, in order to find a better long-term solution for the artesian well. This may include potential plugging or improved “capture” of the water. In this scope, the CONSULTANT and SUBCONSULTANT will provide data collection, investigation, and recommendations for potential improvements. These tasks will be on a limited basis as further described below. This scope of services is an effort to provide an encompassing, but not all-inclusive list of duties and responsibilities, that may be requested from CONSULTANT under this task authorization. TASK ͭ – PROJECT MANAGEMENT AND QUALITY ASSURANCE/CONTROL Task ͭ includes aspects of project and quality management to provide effective delivery of the PROJECT. Specific items included in Task ͭ are detailed in the subtasks described below. Task 1.1 – Project Management, Communications and Meetings The CONSULTANT will provide overall project management and communication between its staff, SUBCONSULTANT and the CITY. The CONSULTANT will track and manage the budget, project tasks, and schedule. The CONSULTANT will attend and manage project meetings. This project anticipates as- needed progress meeting to be held in the allotted budget to facilitate coordination, review design modifications, and make decisions to keep the project moving forward. The CONSULTANT will provide monthly progress reports that identify the work that has been performed during the month and the work that is anticipated in the upcoming month. These reports will be delivered as part of the monthly progress payment request. Task 1.2 – Quality Assurance/ Control The CONSULTANT will coordinate quality control and quality assurance review of the project including review of design modification documents, QC of permit applications, and oversight/facilitation of communication between the CITY and FDEP. Task 1 Deliverables:  As-needed meeting agendas, presentations, and minutes (electronic).  Monthly progress reports (pdf) TASK ͮ – DATA GATHERING AND CONDITION ASSESSMENT Task ͮ involves gathering of data necessary for execution of the project. Specific items included in Task ͮ are detailed in the subtasks described below. City of Winter Springs Lake Jessup RW Augmentation Station – Feasibility Analysis Scope of Services Page ͯ Task ͮ.ͭ – Data Gathering The CONSULTANT will collect and review previous data and reports relating to the CITY’s Jessup RW Station. The following data request list is anticipated, and other additional data may be requested as available and as needed:  Station layout and general information  Record drawings  Shop drawings  Original pipeline specifications  Intake flow and pressure data  Pump curves  SCADA data related to pump operation and performance  Water quality data  Maintenance history/records Note that the CITY has already provided some of this data in previous assignments. It is assumed that using past CITY and SJRWMD water quality data will be sufficient and this Task includes budget to conduct minimal samples needed for confirmation/calibration. If existing water quality data is not reliable and additional water quality testing is required, Task Ͳ (As-Needed Task) will be utilized. Task ͮ.ͮ – Condition Assessment (Mechanical/Process Equipment) The CONSULTANT will conduct a condition assessment for the existing mechanical and process equipment at the Jessup RW Station. The intent will be to gather an overall understanding of the condition of the existing mechanical and process components at the Jessup RW Station (including items such as existing pumps, piping, treatment filtration units, limited SCADA, etc.) to determine what modifications may be required. The Condition Assessment write-up will be included in the overall Feasibility Analysis Report and will document the condition of the mechanical/process components, and their potential for replacement or rehabilitation, if needed. TASK ͯ – FEASIBILITY ANALYSIS REPORT Following the Condition Assessment efforts and using the information developed in the previous tasks, the CONSULTANT will provide a Feasibility Analysis Report which will include… ͭ. Summary of the current operability of the Lake Jessup RW Intake Station, ͮ. Summary of the existing process/mechanical Condition Assessment, ͯ. Summary of water quality data and analysis of Station to meet treatment standards, Ͱ. Overview and comparison of potential alternatives (including Opinion of Probable Construction Cost), ͱ. CONSULTANT’S recommendation. An initial draft Feasibility Analysis Report will be provided for review. This will be followed by a review meeting with the City to discuss the document, and submission of a final report. City of Winter Springs Lake Jessup RW Augmentation Station – Feasibility Analysis Scope of Services Page Ͱ TASK Ͱ – PERMITTING AND OUTREACH Task Ͱ involves any permitting and outreach efforts required as part of the Project. This includes meetings, alternatives workshops, and presentations with staff from the CITY and SJRWMD. Potential permitting efforts required by the SJRWMD, Florida Department of Environmental Protection (FDEP), etc. will also be included within the allotted budget. TASK ͱ – PARKSTONE ARTESIAN WELL INVESTIGATION Task ͱ includes the investigation of the Parkstone Artesian Well by the CONSULTANT and SUBCONSULTANT. The purpose of this investigation is to determine whether the source of groundwater that is currently being discharged through a man-made collection/capture/drainage structure emanates from a groundwater well buried below current land surface. The data collected from this investigation is intended to assist in the evaluation of potential remedies to eliminate the artesian flow and associated surface subsidence, ideally by plugging and abandoning a well if present. A full scope of work provided by the SUBCONSULTANT is attached, with a task summary included below: Task ͱ.ͭ – Historical Documentation Review The SUBCONSULTANT will review available records from various sources to determine well construction details of the groundwater wells that used to be located within the Parkstone community and previously used for agricultural information. This subtask includes review of records from sources such as SJRWMD, FDEP, United States Geologic Survey (USGS), the CITY, and the original developer, Centex Homes. Task ͱ.ͮ – Subsurface Geophysical Surveys Task ͱ.ͮ includes geophysical surveying and mapping services. The purpose of surveying is to obtain details on subsurface structures and features in the area around the suspected wellhead. The subsurface surveys are conducted using non-invasive surveying techniques using such as Electrical Resistivity Imaging (ERI) and Ground Penetrating Radar (GPR). Task ͱ.ͯ – Water Quality Data Collection The SUBCONSULTANT will research available records from various sources to obtain seasonal water quality data from the St. Johns River or Lake Jessup. They will also research available records from the same sources to obtain water quality data from the surficial wells in the vicinity of Lake Jessup and the Jessup RW Station. The intent of this task is to evaluate the potential to use groundwater from the surficial aquifer for the Jessup RW Station instead of surface water pumped directly from Lake Jessup. Task ͱ.Ͱ – Report Preparation The SUBCONSULTANT will prepare a technical memorandum summarizing the methodology and data collected from this investigation. The report will include recommendations based on the findings of the investigation, including a summary of water quality data collected from Task ͱ.ͯ. This Task also City of Winter Springs Lake Jessup RW Augmentation Station – Feasibility Analysis Scope of Services Page ͱ includes attending one meeting with CITY staff to discuss the findings and evaluate potential mitigation options. TASK Ͳ –OPERATIONAL REPAIR/OVERSIGHT (AS-NEEDED) Task Ͳ includes any as-needed operational support required by the CONSULTANT to potentially recommission the Jessup RW Station. This includes limited support and minor testing within the allotted budget. Additionally, this Task may include any potential water quality testing that may be required, beyond that already scoped in Task ͮ.ͭ. CITY RESPONSIBILITIES Because of the nature of this project, certain assumptions apply to this Scope of Services. To the extent possible, these assumptions are stated within this document and are reflected in the budget. If the project task requirements are different from the assumptions presented in this Scope of Services, or if the CITY desires additional services, the resultant change in scope will serve as a basis for amending this project assignment or initiating the development of a new project assignment as agreed to by both the CITY and CONSULTANT. The following assumptions and CITY responsibilities apply to this project:  The CONSULTANT shall be entitled to rely upon the accuracy of the data and information supplied by the CITY without independent review or evaluation.  The CITY shall attend all workshops and review meetings to maintain the progress of the project according to the schedule.  The CITY will provide the CONSULTANT with access to treatment facility and artesian well location for data gathering, data validation and the design process.  The CITY will assist with data collection and site testing as necessary, including accompanying the CONSULTANT and leading operation of the facility.  The CITY will provide all required information within the period established in the schedule contained in this Scope of Services. The schedule is based on timely receipt of data and the bid process from the CITY. The CITY shall review Draft deliverables and provide comments to the CONSULTANT on a prompt basis.  The services to be performed by the CONSULTANT are intended solely for the benefit of the CITY. No person or entity not a signatory to this Scope of Work shall be entitled to rely on the CONSULTANT's performance of its services hereunder, and no right to assert a claim against the CONSULTANT by assignment of indemnity rights or otherwise shall accrue to a third party as a result of this Scope of Work or the performance of the CONSULTANT's services hereunder.  In providing opinions of cost, financial analyses, economic feasibility projections, and schedules for potential projects, CONSULTANT has no control over cost or price of labor and material; unknown or latent conditions of existing equipment or structures that may affect operation and maintenance costs; competitive bidding procedures and market conditions; time or quality of performance of third parties; quality, type, management, or direction of operating personnel; and other economic and operational factors that may materially affect the ultimate project cost or schedule. Therefore, CONSULTANT makes no warranty that the CITY’s actual project costs, financial aspects, economic feasibility, or schedules will not vary from CONSULTANT’s opinions, analyses, projections, or estimates. City of Winter Springs Lake Jessup RW Augmentation Station – Feasibility Analysis Scope of Services Page Ͳ SCHEDULE The scope of services outlined in this task authorization will be performed for up to ͭͮ-months from receipt of a purchase order or notice-to-proceed from the CITY. PROJECT FEE The compensation terms are based on a Fee Not-to-Exceed basis with an upper limit of ͈ͭͮͲ,͵ͯͬ.ͲͲ as shown in Exhibit B. Labor rates are based on the contract fee schedule shown in the base contract. City of Winter Springs EXHIBIT B Lake Jessup RW Augmentation Station - Feasbility Analysis Budget Labor Task No.Task Description Senior Professional ES VIIII Senior Professional ES VIII Lead Professional ESVII Professional ES III Assistant Professional ES II Assistant Professional ES I Senior Technician ET VIII Technician ET IV Word Processing $283.87 $250.63 $228.05 $153.63 $133.89 $122.10 $166.67 $102.33 $86.63 1 Project Management 4 14 0 0 0 36 0 0 0 54 $9,039.90 $1,000.00 $10,039.90 1.1: Project Management, Communications and Meetings 4 12 0 0 0 24 0 0 0 40 $7,073.44 $7,073.44 1.2: Monthly Progress Reports 0 2 0 0 0 12 0 0 0 14 $1,966.46 $1,966.46 2 Data Gathering and Condition Assessment 14 24 16 20 0 40 4 0 0 104 $22,261.38 $2,000.00 $24,261.38 2.1: Data Gathering 2 8 4 4 0 16 0 0 0 34 $6,053.10 $6,053.10 2.2: Condition Assessment (Mechanical/Process Equip.) 12 16 12 16 0 24 4 0 0 84 $16,208.28 $16,208.28 3 Feasibility Analysis Report 6 20 16 16 18 42 24 0 8 150 $25,054.04 $25,054.04 4 Permitting and Outreach 8 16 16 8 8 20 0 0 6 82 $15,191.78 $15,191.78 5 Parkstone Artesian Well Investigation 2 8 0 0 10 16 4 0 0 40 $6,531.96 $2,000.00 $22,680.00 $31,211.96 6 Operational Repair/Oversight (As-Needed) 10 16 8 8 10 24 24 0 0 100 $18,171.60 $3,000.00 $21,171.60 TOTALS 44 98 56 52 46 178 56 0 14 530 $96,250.66 $8,000.00 $22,680.00 $126,930.66 Task Total ExpensesTotal Hours Subconsultant - CCI Other Direct Costs North Florida Office · 19505 N.W. 184th Terrace · High Springs, Florida 32643 Central Florida Office · 1210 Emmel Road · Lake Helen, Florida 32744 South Florida Office· 1907 Commerce Lane, Ste. 104 · Jupiter, Florida 33458 1 _____________________________________________________________________________ Water Resource Consultants January 11, 2022 Scott Richards, P.E. Infrastructure Design Manager | Associate Vice President Carollo 200 E. Robinson Street, Suite 1400 Orlando, FL 32801 Subject: Proposal – Parkstone Artesian Well Investigation CCI Project No: 290.04 Dear Mr. Richards: Connect Consulting, Inc. (CCI) is pleased to submit our proposal to Carollo to provide hydrogeologic consulting services related to the investigation of a suspected artesian well located in the Parkstone neighborhood in Winter Springs, Florida. The purpose of the investigation is to determine if the source of groundwater that is currently being discharged through a man-made collection/capture/drainage structure emanates from a groundwater well buried below current land surface. The data collected from this investigation is intended to assist in the evaluation of potential remedies to eliminate the artesian flow and associated surface subsidence, ideally by plugging and abandoning a well if present. In addition, a task to investigate seasonal water quality of the St. Johns River and surficial aquifer in the vicinity of the City of Winter Springs (City) surface water plant on Lake Jesup is included. Scope of Work CCI prepared the following scope of work based on discussions with Carollo and City staff regarding the purpose and intent of this project: Task 1 – Historical Documentation Review CCI will review available records from various sources in an effort to determine well construction details of the groundwater wells that used to be located within the Parkstone community and previously used for agricultural irrigation prior to the development of the Parkstone community. The sources will include, but are not limited to the St. Johns River Water Management District (SJRWMD), Florida Department of Environmental Protection (FDEP), United States Geologic Survey (USGS), City of Winter Springs (City), and the original developer, Centex Homes. Central Florida Office 1210 Emmel Road Lake Helen, FL 32744 386-473-7766 drobertson@cciwater.com North Florida Office · 19505 N.W. 184th Terrace · High Springs, Florida 32643 Central Florida Office · 1210 Emmel Road · Lake Helen, Florida 32744 South Florida Office· 1907 Commerce Lane, Ste. 104 · Jupiter, Florida 33458 2 In addition, CCI will contact and interview staff from SJRWMD who have knowledge of or may be familiar with the history of the wells previously used for agricultural use and subsequently abandoned by Centex Homes as part of the development of the community. Task 2 –Subsurface Geophysical Surveys CCI will retain Geohazards, an industry leader in subsurface geophysical investigations, to provide geophysical surveying and mapping services. The purpose of the surveying is to obtain details on subsurface structures and features in the area around the suspected wellhead. The subsurface surveys are conducted using non-invasive surveying techniques using state of the art instrumentation and software. Geophysical methods that will be used include Electrical Resistivity Imaging (ERI) and Ground Penetrating Radar (GPR). Task 3 – Water Quality Data Collection CCI will research available records from various sources including the SJRWMD, FDEP, USGS, and others to obtain seasonal water quality data from the St. Johns River and/or Lake Jesup. Data will be tabulated and summarized by sample location and date. CCI will also research available records from the same sources to obtain water quality data from surficial aquifer wells in the vicinity of Lake Jesup and the City’s surface water treatment plant, if any. The intent of this task is to evaluate the potential to use groundwater from the surficial aquifer for the surface water treatment plant instead of surface water pumped directly from Lake Jesup which is the current water supply for the surface water treatment plant. Task 4 – Report Preparation CCI will prepare a technical memorandum summarizing the methodology and data collected from this investigation. The report will include recommendations based on the findings of the investigation. This task includes attending one meeting with City staff to discuss the findings and evaluate various potential options to mitigate the artesian flow and associated subsidence conditions that periodically occur around the current collection structure. The report will also include a summary of water quality data collected from Task 3. Cost CCI will provide these services on a time and materials, not to exceed basis as summarized in Table 1. CCI will retain Geohazards, Inc. to conduct the geophysical surveys in accordance with the attached quotation. North Florida Office · 19505 N.W. 184th Terrace · High Springs, Florida 32643 Central Florida Office · 1210 Emmel Road · Lake Helen, Florida 32744 South Florida Office· 1907 Commerce Lane, Ste. 104 · Jupiter, Florida 33458 3 Table 1 - Cost Proposal Task Description Labor/Expenses Qty. Rate Amount 1 Documentation Review Principal Hydrogeologist 16 $165.00 $2,640.00 Senior Hydrogeologist 24 $130.00 $3,120.00 Expenses $0.00 Task Total $5,760.00 2 Geophysical Surveys Principal Hydrogeologist 8 $165.00 $1,320.00 Senior Hydrogeologist 24 $130.00 $3,120.00 Expenses $300.00 Sub. Services - Geohazards 1 $3,000.00 $3,000.00 Subcontractor Markup 1 $300.00 $300.00 Task Total $8,040.00 3 Water Quality Investigation Principal Hydrogeologist 8 $165.00 $1,320.00 Senior Hydrogeologist 24 $130.00 $3,120.00 Expenses $0.00 Task Total $4,440.00 4 Report Preparation Principal Hydrogeologist 8 $165.00 $1,320.00 Senior Hydrogeologist 24 $130.00 $3,120.00 Expenses $0.00 Task Total $4,440.00 Total Estimate $22,680.00 Schedule CCI can begin Task 1 within two (2) weeks of authorization. Based on our experience, we have prepared the following estimated schedule: Table 2- Estimated Project Schedule Task No. Description Duration (wks) Cumulative (wks) 1 Documentation Review 4 4 2 Geophysical Surveys 4 8 3 Water Quality Investigation 4 12 4 Prepare Final Report 4 16 North Florida Office · 19505 N.W. 184th Terrace · High Springs, Florida 32643 Central Florida Office · 1210 Emmel Road · Lake Helen, Florida 32744 South Florida Office· 1907 Commerce Lane, Ste. 104 · Jupiter, Florida 33458 4 We appreciate the opportunity to assist Carollo and the City on this project. Please contact me with any questions. Sincerely, Connect Consulting, Inc. David S. Robertson David S. Robertson, P.G. Principal Hydrogeologist CC: Thomas Freeman Gary Eichler Attachments: Geohazards Proposal GEOHAZARDS PROPOSAL FL Registry 33930 100 SW 75th St., Ste. 201, Gainesville FL 32607 Telephone: 800.770.9990 Admin@Geohazards.com Expert Solutions. Exceptional Service. July 20, 2021 Cost Proposal for a Geophysical Investigation Parkstone Artesian Well Investigation Near Sandringham Court Winter Springs, Florida Summary of Understanding Geohazards was contacted by Mr. David Robertson P.G. of Connect Consulting, Inc., for a proposal to conduct a geophysical investigation near a suspected buried wellhead in the Parkstone community. Geohazards proposes to perform a focused Electrical Resistivity Imaging (ERI) survey and Ground Penetrating Radar (GPR) survey, to aid in determining the location of a possible wellhead. Project Site Information The area near Sandringham Court is experiencing artesian conditions from either a natural spring or possible abandoned well head. The wellhead is expected to be between 10 and 25 in depth. A concrete and steel drainage structure and #57 stone is in the general area of investigation. At this time, the excess water is redirected to Lake Jesup to the north. Proposed Scope of Services Electrical Resistivity Imaging Survey Electrical resistivity measurements involve the passing of an electric current through the subsurface material and measuring its resistance to flow. Different materials (e.g. clay, sand, limestone, concrete, metal, and void-space) resist the flow of electrical current differently. Contrasts in the degree of resistance are used to identify and locate boundaries among different materials. Measurements of electrical resistivity will be made utilizing an Advanced Geosciences, Inc. SuperSting R8 8-channel Resistivity Meter with a switchbox system and a passive electrode cable array. The resulting data will be processed utilizing EarthImager 2D, a computer program that produces two-dimensional vertical cross section models of the subsurface (see Figure 1.). The FL Registry 33930 100 SW 75th St., Ste. 201, Gainesville FL 32607 Telephone: 800.770.9990 Admin@Geohazards.com Private Property July 20, 2021 Summerfield, Florida Page 2 of 4 depth limits of the modeled ER data are primarily dependent on the type of array (Schlumberger, Wenner, Dipole-Dipole, etc.), the materials penetrated and the total length of the electrode array. Figure 2. Representative ERI traverse processed with EarthImager 2D. Colors differences represent contrasts in resistivity values. We propose conducting ERI transects to focus on determining a steel pipe in the subsurface. Maximum estimated depths of penetration of approximately 30-70 feet are expected. Location and orientation of transects will be determined by the on-site specialist to maximize data acquisition and synthesis. A combination of 56 and 28 electrode lines may be utilized to achieve maximum data and depth of penetration for the desired areas or to increase area of coverage. Ground Penetrating Radar Survey Ground penetrating radar (GPR) is a geophysical procedure employed to detect and identify subsurface features and conditions characterized by a contrast in dielectric properties. This technique involves the transmission of microwave radiation into the ground from a receiver- transmitter antenna system that is pulled along the ground surface. Subsurface contrasts in the dielectric properties of varying materials present a surface from which reflections are generated. Accordingly, contacts between rock types, physical features such as cavities or disrupted sedimentary layers, and/or man-made objects such as metallic barrels or pipes cause reflections that are recorded at the surface. Figure 1: GPR traverse with 300/800 MHz dual-frequency antenna used for scanning foundations and near-surface soils. FL Registry 33930 100 SW 75th St., Ste. 201, Gainesville FL 32607 Telephone: 800.770.9990 Admin@Geohazards.com Private Property July 20, 2021 Summerfield, Florida Page 3 of 4 The intensity of the reflected signal is affected by the contrast in dielectric properties of materials, the electromagnetic conductivity of the medium through which the waves traverse, and the frequency of the signal. Digital signals are recorded and stored in a recorder for on-site visual color display or subsequent transferal to a computer for careful analysis and printing. A Geophysical Survey Systems, Inc., (GSSI) SIR System-4000 radar receiver will be used. These are portable, digital radar signal recorders. A dual frequency 300/800-megahertz transceiver antenna will be used with a two-way travel time range of approximately 50-200 nanoseconds. Penetration depths for GPR signals are a function of material types (greater signal attenuation in clayey materials or brackish water) and frequency (greater signal attenuation in higher frequency antenna systems). Actual depth of penetration varies from site to site. Based on the near-surface materials, the depth capability at this site is expected to be approximately up to 15 feet utilizing the 300/800 MHz antenna, but actual penetration is variable. A 200-megahertz transceiver antenna may also be used with a two-way travel time range of approximately 150-300 nanoseconds to provide deeper imaging of the area. Ground Penetrating Radar traverses may be performed as designated by the on-site geologist. The configuration and distribution of the GPR traverses will be designed to provide representative coverage of the site of investigation. GPR traverses will be conducted as designated by the on-site geologist to determine the buried metal pipe. Project Costs: Geophysical Investigation: $3,000.00 ESTIMATED TOTAL: $3,000.00 These price quotes include all expenses incurred, including all necessary field equipment, travel, ERI data post-processing, and report preparation. Our findings and recommendations will be delivered in a signed and sealed final report. The fees stated in this proposal are valid for 90 days from the date of this agreement. PAYMENT AND TERMS Client agrees to pay each invoice within thirty (30) days of its receipt. If any amount of the total due is unpaid for more than 30 days, client further agrees to pay a late fee which is the greater of $10 or two and one-half (2.5) percent of the unpaid balance assessed monthly (or the maximum interest rate permitted under applicable law), until paid. Client agrees to pay Geohazards, Inc.’ cost of collection of all amounts due and unpaid, including court costs and reasonable attorney’s fees (including, but not limited to, pre-litigation, preparation through any appeals or post-trial motions). Geohazards shall not be bound by: any provision or agreement requiring or providing for arbitration of disputes or controversies arising out of this agreement; FL Registry 33930 100 SW 75th St., Ste. 201, Gainesville FL 32607 Telephone: 800.770.9990 Admin@Geohazards.com Private Property July 20, 2021 Summerfield, Florida Page 4 of 4 any provision wherein Geohazards waives any rights to a mechanics lien; or any provisions conditioning Geohazards’ right to receive payment for its work upon payment to Client by any third party. Failure to make payments within 30 days of invoice shall constitute release of Geohazards from any or all claims which Client may have, whether in tort, contract or otherwise, and whether known or unknown at the time. Acceptance Geohazards will schedule to conduct this work upon authorization to proceed. To accept this proposal, please sign and date in the space indicated below. Please return one copy of this executed proposal to Geohazards. Thank you for considering Geohazards for this project. Should you have any questions, please contact our office at (352) 371-7243. We look forward to working with you. Sincerely, GEOHAZARDS James D. Olson, P.G. Director of Geology & Geophysics Proposal Accepted By: Signature: __________________________________________ Date: ___________________ Printed Name: _______________________________________ Parkstone Development –City of Winter Springs Preliminary Assessment on the Feasibility of Plugging an Artesian Well ©Jacobs 2023 Background 2 ▪Parkstone residential development has an artesian (naturally flowing) source of groundwater. ▪Artesian flow continuously discharges into Lake Jesup at reported 0.5 million gallons per day for over 20 years. ▪Infrastructure was installed at time of Parkstone development to capture the artesian flow and discharge it to Lake Jesup. ▪Parkstone HOA desires to have this well plugged to avoid further costs associated with repair and maintenance. ©Jacobs 2023 Not to Scale -Locations are Approximate ©Jacobs 2023 Current Interest in Plugging the Artesian Well at Parkstone 4 ▪On April 5, 2022 St. Johns River Water Management District (SJRWMD) indicated it is willing to grant impact offset/credits to Seminole County if it can plug the well. ▪Seminole County requested for Jacobs to complete an assessment of the feasibility of plugging the well. Source: SJRWMD Abandoned Artesian Well Plugging Program Fact Sheet ©Jacobs 2023 Assessment Prepared by Jacobs 5 ▪In November 2022 SCESD and Jacobs visited site along with a representative of the HOA. ▪The well and flow containment structure are buried underground and not visible for inspection. ▪After the visit Jacobs reviewed publicly available documentation including permits and historical information. ▪Jacobs prepared a memorandum summarizing the site visit, the records review, and listing the risks and concerns facing the County if it attempted to plug the well. ©Jacobs 2023 Jacobs’ Records Review and Findings 6 ▪The City of Winter Springs holds an existing CUP for augmentation of raw water for their reclaimed water system (CUP 105763). A pipe was planned from the well to the City’s treatment plant but was never installed. ▪Multiple permit documents acknowledge the presence of the artesian well at Sandringham Ct. ▪Permit documentation states there have been multiple attempts to plug the artesian well on Sandringham Ct. during the construction of the Parkstone Development. Source: SJRWMD CUP Application No. 105763 Technical Staff Report ©Jacobs 2023 Jacobs’ Recommendations to the County 7 ▪Jacobs recommends that the County not move forward with this project due to: −Historical record of unsuccessful attempts to plug well by other entities. −Major disruption to the Parkstone community during exploratory and construction work. −Potential for artesian groundwater flow to emerge at another location in Parkstone. −Unknown terms and conditions required by multiple parties having jurisdiction over the work –Parkstone HOA, City of Winter Springs, SJRWMD. ▪If the County elects to proceed with this project, the terms and conditions required by the county should be developed and agreed upon by the Parkstone HOA, the City of Winter Springs, and the SJRWMD prior to proceeding with further investigations.