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Backup Documents 12/12/2023 Item #16F 9ORIGINAL DOCUMENTS CHECKLIST & ROUTING SLIP TO ACCOMPANY ALL ORIGINAL DOCUMENTS SENT TO 1 6 F 9 THE BOARD OF COUNTY COMMISSIONERS OFFICE FOR SIGNATURE Print on pink paper. Attach to original document. The completed routing slip and original documents are to be forwarded to the County Attorney Office at the time the item is placed on the agenda. All completed routing slips and original documents must be received in the County Attorney Office no later than Monday preceding the Board meeting. **NEW** ROUTING SLIP Complete routing lines # 1 through #2 as appropriate for additional signatures, dates, and/or information needed. If the document is already complete with the exception of the Chairman's signature, draw a line through routing lines #1 through #2, complete the checklist, and forward to the County Attorney Office. Route to Addressees I,ist in routing order Office Initials Date 1. County Attorney Office County Attorney Office 1 Z n 2. BCC Office Board of County Commissioners Chairman 3. Minutes and Records Clerk of Court's Office L�� / !3 aJ 1: 0 PRIMARY CONTACT INFORMATION r Normally the primary contact is the person who created/prepared the Executive Summary. Primary contact information is needed in the event one of the addresses above, may need to contact staff for additional or missing information Name of Primary Staff Bendisa E. Zela, Facilities Division Phone Number 239-252-8440 Contact / Department Email Bendisa.Zela(&,colliercountyfl.gov Agenda Date Item was December 12, 2023 Agenda Item Approved by the BCC Number 16.F./ 'i Type of Document Recommendation to approve Change Number of Attached Order No. 6, for $485,259 under Original 1 Agreement No. 19-7650, Golden Gate Documents Golf Course Redevelopment Planning Attached and Engineering, to conduct an Environmental Site Assessment at Golden Gate Golf Course PO number or account Facilities Division is requesting a number if document is completed copy to be recorded INSTRUCTIONS & CHECKLIST Initial the Yes column or mark "N/A" in the Not Applicable column, whichever is Yes N/A (Not a ro riate. Initial Applicable) 1. Does the document require the chairman's original signature? N/A 2. Does the document need to be sent to another agency for additional signatures? If yes, N/A rovide the Contact Information Name; Agency; Address; Phone on an attached sheet. 3. Original document has been signed/initialed for legal sufficiency. (All documents to be signed by the Chairman, with the exception of most letters, must be reviewed and signed BEZ by the Office of the County Attorney. 4. All handwritten strike -through and revisions have been initialed by the County Attorney's N/A Office and all other parties except the BCC Chairman and the Clerk to the Board 5. The Chairman's signature line date has been entered as the date of BCC approval of the BEZ document or the final negotiated contract date whichever is applicable. 6. "Sign here" tabs are placed on the appropriate pages indicating where the Chairman's si nature and initials are required. 7. In most cases (some contracts are an exception), the original document and this routing slip N/A should be provided to the County Attorney Office at the time the item is input into SIRE. Some documents are time sensitive and require forwarding to Tallahassee within a certain time frame or the BCC's actions are nullified. Be aware of your deadlines! 8. The document was approved by the BCC on December, 12 2023 N/A is not and all changes made during the meeting have been incorporated in the attached an option for document. The Count Attorne 's Office has reviewed the changes, if applicable. � this line. 9. Initials of attorney verifying that the attached document is the version approved by the N/A is not BCC, all changes directed by the BCC have been made, and the document is ready for the .�l an option for Chairman's signature. this line. l: Forms/ County Forms/ BCC Forms/ Original Documents Routing Slip WWS Original 9.03.04, Revised 1.26.05, Revised 2.24.05; Revised 1 1/30/12 16F9 Cote County ® Contract Modification ❑ Work Order Modification Procurement Services Change Order Form Contract #: 19-7650 Change #: Purchase Order #: 4500202044 Project #: 80412.3 Contractor/Firm Name: Fvidson Engineering, Inc. Golden Gale Golf Course Redevelopment Planning Contract/Project: and Engineering Project Manager Name: Brian DeLony, Project Manager, Supervisor Facilities Management Division Name: Original Contract/Work Order Amount $ 684,666.50 Current BCC Approved Amount $ 2,042,726,10 Current Contract/Work Order Amount $ 2,042,726.10 Dollar Amount of this Change $ 485,259.00 Revised Contract/Work Order Total $ 2,527,985.10 Cumulative Changes 1 $ 1,843,318.60 12/10/19 16F11 Original BCC Approval Date; Agenda Item # 2/28/23 11F Last BCC Approval Date; Agenda Item # 3/2/2025 SAP Contract Expiration Date (Master) 269.23% Total Change from Original Amount 23.76% 'Change from Current BCC Approved Amount 23,76% 'Change from Current Amount Completion Date, Description of the Task(s) Change, and Rationale for the Change Notice to Proceed 2-24-2020 Original 2-23-2023 Last Approved 3-2-2025 Revised Date Date Completion Date Date (Includes this change) # of Days Added Select Tasks ❑ Add new task(s) ❑ Delete task(s) ❑ Change task(s) ® Other Provide a response to the following: 1.) detailed and specific explanationtrationale of the requested change(s) to the task(s) and / or the additional days added (if requested); 2.) why this change was not included in the original contract; and, 3.) describe the impact if this change Is not processed. Attach additional information from the Desion Professional and/nr (nntrartnr If nApriAri 1. The Change Order will increase Phase 1 Task 2 by $485,259 to provide additional environmental testing, reporting and recommendation of engineering controls for Tracts 1-4 and 6 of the Golden Gate Golf Course (GGGC) and recommendations for rehabilitation completion, 2. These services were not included in the original contract due to a lack of prior knowledge regarding the extent of contamination and the specific regulatory requirements. As such, the contract was based on the available information at that time, which did not include the comprehensive soil and groundwater quality assessments and extensive testing for various constituents. These requirements only became apparent as the project advanced, and more data was gathered. If this change is not processed, it would have several significant implications for the project and the Golden Gate Golf Course redevelopment: 1) Without the requested change, the environmental assessment would remain incomplete and might not meet the necessary regulatory standards. This could result in uncertainties and potential liabilities associated with the site's environmental condition.2) Failing to address the change order could lead to non-compliance with environmental regulations, which could result in legal and financial penalties, 3) The delay in conducting the comprehensive environmental assessment would likely hinder the overall project timeline. Without the critical information gained from the assessment, it would be challenging to plan and execute the site's rehabilitation effectively. Prepared by: Delon Brian Digitally signed by DelonyBrian Y Date: 2023.10.31 12:08:21-04'00' Brian DeLony, Project Manager, Supervisor, Facilities Management Date: Acceptance of this Change Order shall constitute a modification to contract / work order identified above and will be subject to all the same terms and conditions as contained in the contract / work order indicated above, as fully as if the same were stated in this acceptance. The adjustment, if any, to the Contract shall constitute a full and final settlement of any and all claims of the Contractor / Vendor / Consultant / Design Professional arising out of or related to the change set forth herein, including claims for impact and delay costs. icn=Jeff Davidson, o=Davidson Engineering, ou=Fngineering, DAVI1 email=jeffQa davidsonengineering.com, c=US Accepted by: — 2023.11.0110:22:13-04'00' Date: Jeff Davidson, Davidson Engineering, Inc. M cCo rm i ckJ o h n Digitally signed by McCormickJohn Approved by: Date: 2023.11.01 10:45:51-04'00' John McCormick, Director, Facilities Management HerreraSandra Digitally signed by HerreraSandra Approved by: Date: 2023.11.14 16:09:45-05'00' (Procurement Professional) Revised: 01/14/2021 (Divisions who may require additional signatures may include on separate sheet.) Date: Date: PROCUREMENT USE ONLY Admin 13cc aCC E5 1 6 F 9 ATTEST: Crystal K^iizel Courts BOARD OF COUNTY COMMISSIONERS COLLIER & Comptt`a COUNTY, FLORIDA at By: By: ~' Rick LoCastro, Chairman Dated: §vot airman's signature only Appro o form le aliy: By: Scott R. Teach Deputy County Attorney 1 6 F 9 Change Order/Amendment Summary CO# AMD# Description COST TIME Days New Additive (+) Deductive (-) Justification Increase Phase 1-Golf Added Amount ---- Course Redevelopment 1 (task 7-Survey Design) 0 0 0 Provide necessary surveying utilizing allowance for zero related to property leases dollar change 1 Replace Schedule F, Key 0 0 0 Update Key personnel Personnel schedule Add additional funding and 2 reallocate existing funding for Phase 1-Golf Course $178,273.40 0 0 Provide necessary Golf Redevelopment tasks Course Redevelopment tasks Add tasks 11 & 12 (to Phase 1 Golf Course Redevelopment), add Provide for necessary Golf 2 Phase 2 tasks 1.1 thru 1.9 $1,179,786.20 0 Course Redevelopment, Site (Site Design/Permitting), 0 Design and permitting and add Phase 3 tasks 1 thru 3 Services during Construction (Services During tasks Construction) Reallocate existing funding from Phase 2 (Site Provide for necessary Site 3 Design and Permitting) 0 0 0 Design and Permitting as task 5, 1.5, to Phase 2 required to accommodate unforeseen conditions task 3 impacting permitting tasks. Add additional days for Provide additional contract impact of unforeseen site, time to accommodate regulatory and permitting adjustment to approach, requirements and realign unforeseen conditions, 4 task budget from Phase I permitting requirements and Task I and from Phase i 0 0 730 1,825 services during construction. Task 4 to increase Phase Funding reallocation required 1 Task 5 SFWMD to accommodate additional Conceptual ERP work associated with Permitting, unforeseen conditions and revisions to project approach. To provide the revisions to the Golden Gate Golf Course Utilizing $17,812.25 of MPUD and the Golden Gate City Sub -Element of the 5 Task 10 Phase 1 Golden Gate Area Master Plan Allowance. Leaving a to accommodate the relocation balance of $25,742.55 of the proposed State Veteran's home within the PUD, which is part of Phase 1, Task 3. Without the critical information 6 Adds $485,259 to Phase 1 $485,259 gained from the assessment, it Task 2 would be challenging to plan and execute the site's rehabilitation effectively. Revised: 01/14/2021 (Divisions who may require additional signatures may include on separate sheet.) PROCUREMENT USE ONLY Admin I Rpl BCC ES CAO 1 6 F 9 t IF DAVIDSON Li,1r,IY,dLE.kING ESTABLISHED Civil Engineering s Planning • Permitting I. fesigningf,Xcellence October 24, 2023 Collier County Facilities Management Division Attn: Brian Delony, Project Manager / Supervisor 3335 Tamiami Trail East Suite 101 Naples, FL 34112-5356 P : 239.252,7457 E: Brian. Delony@colliercountyfl,gov Re; Professional Services for the Collier County Golden Gate Golf Course Contract No. 19-7650 Davidson Change Order#6 Dear Brian, Please accept this request for a change order to provide additional site assessment reporting (SAR) for Tracts 1-4 and 6 of the Golden Gate Golf Course (GGGC) and recommendations for rehabilitation completion. The subject property currently consists of four (4) separate tracts totaling approximately 147 acres of Collier County tax parcel (STRAP 36560040008) and is currently comprised of vacant land used as a park formerly utilized as a golf course. This site assessment for the GGGC site is ongoing and progressing as re -development of tracts occurs. Current soil and groundwater quality assessments confirm contaminated soil and groundwater located at the GGGC Site. Since the initial site assessment, additional groundwater and soil quality assessments at Tract 4 and Tract 6 have been completed. It is understood that ongoing interim source removal activities will occur as scheduled during site development and will be managed according to approved soil management plans. The following sections of this proposal present the scope of services, reporting, project assumptions, schedule, and fee for performing the following task to assist Collier County in completing site rehabilitation activities at the project site on a per tract basis. Based on the clients request and findings already presented with the inclusion of assumptions of contamination, the following scope of work is a not to exceed budget, in an effort to avoid future additions to the project budget, however, we cannot predict the significance of environmental impact and therefore, additional work not included in this proposal may be required. 4365 Radio Road • Suite 201 - Naples, FL 34104 • P: 239.434.6060 - www.davidsonengineering.com C;J0 1 6 F 9 DAVIDSON F N G. I f'![[ a t ra("� Task 1: Site Assessment Report Interim Source Removal Plan Controls Please refer to the attached Exhibit 'A' for detailed information related to the scope of work outlined below. • Soil and Groundwater Assessments o Prior to initiating drilling activity, notification will be provided to the appropriate utility services so underground utilities or other subsurface structures for the subject property can be identified and marked in the field. o The utility service providers will not identify private markings of buried utilities or other subsurface structures located on private property. As the property owner, Collier County will provide information regarding the location of subsurface structures, underground utilities, and lines that are located on private property. o Prepare layout of the proposed soil boring locations, utilizing the information provided by the County and the utility service providers. • Soil Assessments o Obtain soil borings, beyond 2 feet below land surface (bls), at the subject property utilizing direct push technology via a truck- or track mounted Geoprobe rig equipped with a Marco - Core continuous core sampler. o Soil classifications and descriptions will be based upon visual and manual characterizations of recovered soil samples and documented on Soil Boring Logs and/or field notes as applicable. o Discrete soil samples from soil borings will be collected from the existing grade at the following depth intervals: 0 to 6 inches; 6 inches to 2 feet; and 2 feet to 4 feet or to the encountered water table or limestone unit. Soil samples will be immediately placed in clean, laboratory provided containers for laboratory analysis. o Soil samples will be submitted to a NELAP approved laboratory for the following chemical analysis using applicable United States Environmental Protection Agency (USEPA) Methods, as stated in the scope of service for each Tract. ■ 6020/6010/7470 — 8 RCRA metals (arsenic, barium, cadmium, chromium, lead, mercury, selenium • and silver) • 8081- Organochlorine Pesticides (OCPs) ■ 8141- Organophosphorous Pesticides (OPPs) ■ 8318 - Carbamates Pesticides (CPs) • 8270 - Triazine Pesticides (TPs) ■ 8151 - Chlorinated Herbicides (CHs) Page 2 of 25 C NO 1 6 F 9 131E DAVIDSON erdrir Fi:j iT i ■ Groundwater Assessment o Monitoring wells will be installed at select locations at the subject property. • For shallow aquifer wells, 10 feet of well screen will be installed to approximately 8-feet into the first encountered saturated zone (anticipated to be 12 to 15 feet bls), ■ For intermediate/deep aquifer wells, 5 feet of well screen will be installed to approximately 35-feet set with a 6" diameter casing seal with neat cement grout to approximately 2 feet bls., with a 2" diameter interior well. ■ Purging and sampling will be conducted once the monitoring wells have been allowed to stabilize for at least 24 hours after well development. To determine hydraulic activities of aquifer, up to 3 monitoring wells per aquifer evaluation depth will be field tested for permeability via instantaneous change in head "slug- test", in general accordance with ASTM D4044. ■ Prior to groundwater sampling acquisition, depth to water measurements will be gauged in the monitoring wells with an electronic water level meter to determine the appropriate purge volumes for each monitoring well. • The groundwater stabilization readings will be documented on Groundwater Sampling Logs and appended to the report. ■ Groundwater samples will be submitted to a NELAP approved laboratory for following chemical analysis via applicable United States Environmental Protection Agency (USEPA) Methods, as stated in the scope of service for each Tract. ■ 6020/6010/7470 — 8 RCRA metals (arsenic, barium, cadmium, chromium, lead, mercury, selenium and silver) ■ 8081 - Organochlorine Pesticides (OCPs) ■ Engineering Controls and Institutional Controls If the concentrations of Contaminants of Concern are above the cleanup target levels and Conditional-SRCO criteria are met, the real property owner may agree to certain restrictions on the use of their property. These restrictions could take the form of Engineering Controls (EC) or Institutional Controls (IC). The property on which contamination remains in soil or groundwater must implement Institutional Controls or both Engineering and Institutional Controls before an NFA With Conditions will be issued, Engineering controls may take the form of hydraulic control, capping or otherwise immobilizing or containing contamination. Engineering and Institutional controls are not mutually exclusive, and both are required when Engineering Controls are necessary. All institutional controls must be approved by OGC in Tallahassee. The title work, notices to parties, land surveying or DRC recording associated with the DRC process are included in this task. Page 3 of 25 16F9 DAVIDSON rPJC iI Hear,iN(" Engineering Controls and Institutional Controls continued - The following is included for up to four (4) Tracts: o DRC Consultation and Documentation (Attachment 5 and Shapefile Documentation) o Compile the DRC or perform the title search, notices, and land surveying for the DRC submittal. o Design/Specifications of Engineering Control (as necessary based on type of control). o Oversight for verification of placement of engineering control (clean soil cover, impervious surface, etc., variable depending on areas and IC). o Preparation of Engineering Control Maintenance Plan and Annual Inspection Certification Checklist, o Provide Alternative Soil Cleanup Target level at up to two (2) tracts, if appropriate. • Investigative Derived Waste (IDW) Investigation derived waste (IDW), including soil cuttings, soil cores, and development water will be managed is such a way as to not spread contamination, IDW containerization and disposal is not anticipated for this project and is not included in this proposal. • Report The methods and results of the Environmental Assessments will be presented in summary reports which include but are not limited to the following items: o A description of the site history and environmental concerns. o Methodologies utilized to install the soil borings and monitoring wells and collect soil and groundwater samples for laboratory analysis. o Findings of the activities conducted, including soil boring/groundwater sampling logs, site maps depicting the sample locations, groundwater flow diagram, maps of delineated impacts to sub surface environment, results of slug testing, chain -of -custody records, and copies of the laboratory analytical reports. o Recommendations regarding the environmental condition of the subject property and potential risks it may pose for the proposed intended future use based upon the findings; and o The report will be signed by a Professional Engineer or Geologist licensed in the State of Florida and will be provided via email or a link for downloading. Page 4 of 25 16F9 DE DAVIDSON r.-r•�cii•ir:r:ttir�+:; Task 2: Project Management, General Consulting, Coordination and Meetings 1, Provide overall project management and coordinate with sub -consultants and client as needed. 2. Attend necessary meetings. 3. Provide any general consulting as requested by the client. PROJECT ASSUMPTIONS • The client will provide written authorization to proceed with the proposed scope of services and associated fee prior to mobilizing to the subject property. • The client will be responsible to coordinate with the property owner(s) to move vehicles and equipment that may interfere with the advancement of the proposed soil borings/monitoring wells and access will be granted to the subject property, including opening gates to allow the drilling equipment to gain access to proposed drilling areas as well as access to the interiors of any onsite buildings. • The soil borings and monitoring wells can be installed using standard drilling equipment and the proposed drilling locations are accessible with track- or truck -mounted drilling equipment. • Costs may increase due to delays caused by limited or restricted site access. • Unforeseen conditions encountered during drilling which require excessive time and/or stand by time will require additional labor and equipment charges. • Containerization, characterization, and disposal of investigation -derived waste is not included under this contract. • We will not be responsible for adverse weather conditions that cause excessive delays and fees to complete the scope of services, • These assessment activities will be completed on a standard work schedule of Monday through Friday 8:00 AM to 5:00 PM (excluding holidays) and a standard five (5) to seven (7) day laboratory sample analysis turnaround basis. • Surface conditions at each of the proposed soil boring locations consist of non -reinforced asphalt or concrete not exceeding six (6) inches in thickness and no concrete or asphalt cutting will be required. • It is assumed that Level D personal protective equipment is adequate for all site activities. • Scope of services detailed in this proposal will vary based on actual site conditions encountered. • Additional unforeseen assessment activities could be required based on future assessment findings. SCHEDULE The field activities will be scheduled following client direction and approval of field activities. Field work mobilizations described in this proposal will take approximately 2 weeks to set up/schedule. It is estimated that the field activities, including but not limited to: soil borings; monitoring well installations; surveying wells; well purging; sampling and hydraulic conductivity (slug) testing, will be completed onsite over multiple mobilizations as described above. Final laboratory analytical results will be available approximately 10 business days following the date that the laboratory receives the samples. Reports will be delivered to the client approximately 2 to 4 weeks after the final laboratory report is received, Please note that scheduling for the drilling field work may vary depending on current local market conditions. Page 5 of 25 `,, N- Js 1 6 F 9 JE DAV III F 1 D StO N FEES Task No pescription Pee Fee Tvpe 1: Site Assessment Report, Interim Source Removal Plan, and Controls $478,246.00 Lump Sum 2: General Consulting, Coordination, Project Management, and Meetings $ 7,013.00 Estimate - NTE TOTAL: $485,259.00 The time and material charges (noted as Estimate Not To Exceed) will be billed monthly in accordance with the attached fee spreadsheet, in accordance with the existing contract rate schedule, Work can commence immediately upon receipt of the Change Order approval from procurement. Sincerely, / f leff'�son,A P.E. Presldent Attached: Rate Code Fee Spreadsheet Exhibit 'A'— Task 1 Details Exhibit 'B' — Sample Location Tract Map Page 6 of 25 p 16F9 a 3f E w G- a �Np µ U O N � o d � V O � O 6i ix y� N b K W W LL z O .. L O z a L e Z C N 0 S O � Z J Z p Cr�j Nul N O D x z N a z E c E n �• H � C � a N O 6 O U Y ' ° H � yu! k _ O ° N Oe O ` C 6 u O v v 0 O d N 16F9 1E DAVIDSON t IV 6 I PIP 4 2 1 19 '.� EXHIBIT `A' Task 1 - SITE ASSESSMENT REPORT / INTERIM SOURCE REMOVAL PLAN / CONTROLS Soil and Groundwater Assessments Notify the appropriate public utility clearance service so that underground utilities or other subsurface structures for the subject property can be identified and marked prior to drilling operations. The public utility clearance service does not include the private markings of buried utilities or other subsurface structures, which are located on private property. Therefore, the current property owner will provide information regarding the location of subsurface structures, utilities, and lines that are present at the subject property, This information will be utilized and relied upon to layout our proposed soil boring locations prior to initiating drilling activities on the subject property. Soil Assessments Advance soil borings required beyond 2 feet below land surface (bls) at the subject property utilizing direct push technology via a truck- or track -mounted Geoprobeo rig equipped with a Macro -Core continuous -core sampler. The Geoprobe® rig uses both static and dynamic percussion forces to advance sampling apparatus to retrieve core samples. The Macro -Core sampler is a solid barrel, open steel tube that is four feet long, has a diameter of 2% inches, and is equipped with a four- or five-foot plastic liner for sample collection. At times, a 3-inch diameter stainless steel hand -auger may be used for surface soil samples up to 2 feet bls. The soil sampling equipment will be properly decontaminated prior to the initiation of each soil boring. Soil classifications and descriptions will be based upon visual and manual characterizations of recovered soil samples and documented on Soil Boring Logs and/or field notes as applicable. Discrete soil samples from soil borings will be collected from the existing grade at the following depth intervals: 0 to 6 inches; 6 inches to 2 feet; and 2 feet to 4 feet or to the encountered water table or limestone unit. Soil samples will be immediately placed in clean, laboratory provided containers for laboratory analysis. Soil samples will be submitted to a NELAP approved laboratory for the following chemical analysis using applicable United States Environmental Protection Agency (USEPA) Methods, as stated in the scope of service for each Tract, • 6020/6010/7470-8 RCRA metals (arsenic, barium, cadmium, chromium, lead, mercury, selenium and silver) • 8081 - Organochlorine Pesticides (OCPs) • 8141 - Organophosphorous Pesticides (OPPs) a 8318 - Carbamates Pesticides (CPs) • 8270 - Triazine Pesticides (TPs) • 8151 - Chlorinated Herbicides (CHs) Groundwater Assessment Monitoring wells will be installed at select locations at the subject property, The monitoring wells will be constructed of 2-inch diameter Schedule 40 PVC riser and 0.01-inch machine slotted well screen. For shallow aquifer wells, 10 feet of well screen will be installed to approximately 8-feet into the first encountered saturated zone (anticipated to be 12 to 15 feet bls). For intermediate/deep aquifer wells, 5 feet of well screen will be installed to approximately 35-feet set with a 6" diameter casing seal with neat cement grout to approximately 2 feet bls., with a 2" diameter interior well, Each well will be completed with a concrete well pad, expandable tight well cap, locking protective aluminum well casing or flush mounted vault (8" diameter bolted cover). Page 8 of Zs A0 16F9 '74 1 E lNGI PMIDSON LII r R I N G The monitoring wells will be surveyed to determine top of casing (TOC) elevations with an accuracy of 0,01 feet. Purging and sampling will be conducted once the monitoring wells have been allowed to stabilize for at least 24 hours after well development. To determine hydraulic activities of aquifer, up to 3 monitoring wells per aquifer evaluation depth will be field tested for permeability via instantaneous change in head "slug- test", in general accordance with ASTM D4044 Prior to groundwater sampling acquisition, depth to water measurements will be gauged in the monitoring wells with an electronic water level meter to determine the appropriate purge volumes or each monitoring well. Well purging will be accomplished using a peristaltic pump fitted with polyethylene tubing. The monitoring wells will be purged at a low flow rate (less than one gallon per minute) while temperature, pH, conductivity, dissolved oxygen, and turbidity readings are collected to ensure stabilization of groundwater chemistry prior to sample collection. The groundwater stabilization reading will be documented on Groundwater Sampling Logs and appended to the report, Groundwater samples will be submitted to a NELAP approved laboratory for following chemical analysis via applicable United States Environmental Protection Agency (USEPA) Methods, as stated in the scope of service for each Tract. 6020/6010/7470 — 8 RCRA metals (arsenic, barium, cadmium, chromium, lead, mercury, selenium and silver) 8081 - Organochlorine Pesticides (OCPs) Tract 1 Tract 1 has been merged with Tract 6 at this time. Please see Tract 6. Tract 2 Tract 2 includes a portion of former golf hole H18 Fairway and Green. Complete soil borings for soil sample collection at low areas (depressions) located at each Green and Fairway for arsenic and OCPs (2 borings, 6 analytical samples). A groundwater sample will be collected at each location during this time for analysis of arsenic and OCPs via geo-probe tooling for groundwater screening. Additionally, we propose to collect a soil sample from the 6-inch sample depth at the Green, and Fairway depression location (2 total), for RCRA 8 metals, OCPs, OPPs, CPs, TPs and CHs, as per the Collier County Land Development Code (LDC), Section 3.08.00AAA. This initial portion of field work will take 1 day to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. However, for the purpose of this proposal, we will assume, that the average arsenic concentrations will exceed the residential SCTL and that at 1 location, and soil and groundwater will need to be further assessed for arsenic and OCPs. Therefore, a second mobilization is included to complete 25 soil borings per location and 15 soil borings near the tract boundary lines for soil delineation and interim source removal/soil management plan development. Up to 120 soil samples from the 40 soil borings will be included for this mobilization for arsenic analysis and up to 15 samples will be analyzed for OCPs, collected from depth intervals up to 4 feet bls. Additionally, up to 4 permanent shallow monitoring wells (up to 15 feet bls) will be installed at the identified area for analysis of arsenic and OCPs. This mobilization is anticipated to take 3 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. Page 9 of 25 DAVIDSON I N <7 I !J E E R I N For this proposal, it is assumed that additional groundwater delineation will be required and that at 1 location additional soil borings will be required to complete delineation. As such, a third mobilization to complete up to 20 soil borings, to collect up to 60 soil samples for arsenic analysis and install up to 2 additional shallow monitoring wells (up to 15 feet bls) and up to 3 intermediate/deep monitoring wells (up to 35 feet bls). This mobilization is anticipated to take 4 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. At this point, it is assumed additional groundwater delineation will not be required to complete the site assessment reporting, and that at some point during the continued delineation of assumed arsenic impact, an Interim Source Removal Plan (ISRP), including a Soil Management Plan (SMP) will be completed for Tract 2. Tract 3 Tract 3 includes the north portion of former Tee #1, identified as remedial unit RU1, requiring delineation of arsenic and interim source removal activities as part of the future Tract 4 development. The northern portion of RU1 has been delineated to commercial SCTL. The former use of this Tract was not reported in previous environmental assessments; however, it appears to have been a commercial building and parking lot north of the golf course, circa 1973 to 2005. Future development of this tract is unknown currently. Monitoring well MW-14 is located on this tract and arsenic was not detected in the groundwater, This tract appears to have little to no immediate assessment required. However, as a contingency for potential change in use, we propose to complete soil borings for soil sample collection at up to 20 randomly located for arsenic and OCPs (60 analytical samples). This field work will take 1 day to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. At this point, it is assumed additional soil and groundwater delineation will not be required to complete the site assessment reporting for Tract 3, Tract 4 Tract 4, is currently proposed to be developed as a Veterans Assisted Living Facility, This tract includes the south portion of former Tee #1, remedial unit RU1 and the north portion of Tee 42, remedial unit RU31, requiring continued delineation of arsenic and interim source removal activities. Additionally remedial unit RU13 located in the fairway of former Hole 91 has been delineated and is ready of interim source removal in accordance with the approved SMP. Tract development is currently scheduled for this year. Monitor wells MW-1, MW-2, MW-3, MW-4 and MW-5 will need to be abandoned/plugged prior site development. During site development, we propose to assist with source removal documentation, testing and reporting at the 3 remedial units identified. 30 soil borings are proposed to be completed to delineate RU1 and RU31 and abandon the wells earmarked for demolition. It is anticipated that this field work will take 2 days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. We will include verification sampling of blended stockpiles of the RU soils generated from Tract 4 according to the approved SMP. The volume of soil generated after contractor blending activities is unknown. We will provide a cost to sample up to 9 approximate 800 cubic -yard (CY) blended stockpile, as per the approved SMP. Page 10 of 25 16F9 DAVIDSON FNGlW 121; RIN'_; At this point, it is assumed additional soil delineation will not be required to complete the site assessment reporting for Tract 4. However, after BigShots has been developed, we will install up to 5 replacement shallow monitor wells and 1 intermediate/deep well and sample for arsenic, This mobilization is anticipated to take 4 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. For this proposal, it is assumed that the intermediate/deep groundwater will exceed GCTL and require arsenic delineation. As such, a third mobilization is included to install up to 3 intermediate/deep monitoring wells (up to 35 feet bls), and sample for arsenic. This mobilization is anticipated to take 3 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review, Tract 6 Tract 6 (including Tract 1), is projected to remain a golf course, redeveloped to include 6 new lakes. The material removed for the proposed lake areas was previously assessed and 2 lake borrow areas (LBA) were identified as remedial units LBA3 and LBAS, having arsenic concentrations exceeding the C/I SCTL. These remedial units require continued delineation of arsenic and interim source removal activities. Additionally remedial units located within the tract may require interim source removal, in accordance with the approved SMP. Three former golf holes, Ws 15, 16 and 17 are located in Tract 1. Soil borings will be completed for soil sample collection at low areas (depressions) located at each Green, Tee, and Fairway for arsenic and OCPs (9 boring, 27 analytical samples). Additionally, a soil sample will be collected from the 6-inch sample depth at a predetermined Green, Tee and Fairway depression location (3 total), for RCRA 8 metals, OCPs, OPPs, CPs, TPs and CHs, as per the Collier County Land Development Code (LDC), Section 3.08.00A.4.d. This portion of field work will take 1 day to complete. Monitor wells MW-6, MW-7, MW-8, MW-9, MW-10 and MW-11, located within the LSAs will likely need to be abandoned/plugged prior site development. During site development, we propose to assist with source removal documentation, testing and reporting at the 2 LBA remedial units identified. The former golf maintenance facility requires additional delineation of arsenic and dieldrin impact. Complete up to 60 soil borings to delineate RULBA3 and RULBAS, and abandon the wells earmarked for demolition. Also, within the maintenance area, we will complete up to 10 soil boring for additional analysis of arsenic and OCP, collect a surface water sample from the adjacent lake, Install 3 shallow monitor wells and 1 intermediate/deep monitor followed by groundwater sampling, for lab analysis of arsenic and OCP. It is anticipated that this field work will take 4 days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. For this proposal, it is assumed groundwater and soil will need to be further assessed for arsenic and OCPs at up to 3 locations in former Tract 1, and that additional groundwater delineation will be required at the maintenance facility, including an additional 3 shallow wells and 3 intermediate/deep wells. included is a mobilization to complete 25 soil borings per location in former Tract 1, and 25 soil borings near the tract boundary lines for soil delineation and interim source removal/soil management plan development. Up to 300 soil samples from the 100 soil borings will be included for this mobilization for arsenic analysis and up to 45 samples will be analyzed for OCPs, collected from depth intervals up to 4 feet bls. Additionally, up to 3 permanent shallow monitoring wells (up to 15 feet bls) will be installed at the identified areas for analysis of arsenic and OCPs. Page 11 of 25 ct�'C) 1 6 F 9 DAVIDSON G I N R Additionally, this mobilization includes up to 25 soil borings per up to 3 RU locations and 25 soil borings near the tract boundary lines for soil delineation and interim source removal/soil management plan development. Up to 225 soil samples from up to 75 soil borings will be included for this mobilization for arsenic analysis and up to 36 samples will be analyzed for OCPs, collected from depth intervals up to 4 feet bls. This mobilization is anticipated to take 9 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review, and that additional soil and groundwater delineation will not be required to complete the site assessment reporting for Tract 6. For this proposal, it is assumed that at 1 of the 3 monitoring well locations in former Tract 1, additional groundwater delineation will be required and that at 2 locations additional soil borings will be required to complete delineations. As such, a third mobilization is included to complete up to 50 soil borings, to collect up to 150 soil samples for arsenic analysis and install up to 4 additional shallow monitoring wells (up to 15 feet bls) and up to 3 intermediate/deep monitoring wells (up to 35 feet bls). This mobilization is anticipated to take 4 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. We will include verification sampling of blended stockpiles of the RU soils generated from Tract 6 according to the approved SMP. The volume of soil generated after contractor blending activities is unknown. A cost will be provided to sample up to 10 approximate 800 CY blended stockpile, as per the approved SMP. Also, an additional round of groundwater quality sampling, analysis and reporting will be included for arsenic and OCP analysis for up to 12 monitoring wells, estimated to take approximately 1.5 working days to complete the field work. Engineering Controls and Institutional Controls If the concentrations of Contaminants of Concern are above the cleanup target levels and Conditional- SRCO criteria are met, the real property owner may agree to certain restrictions on the use of their property. These restrictions could take the form of Engineering Controls (EC) or Institutional Controls (IC), The property on which contamination remains in soil or groundwater must implement Institutional Controls or both Engineering and Institutional Controls before an NFA With Conditions will be issued. Engineering controls may take the form of hydraulic control, capping or otherwise immobilizing or containing contamination. Engineering and Institutional controls are not mutually exclusive, and both are required when Engineering Controls are necessary. All institutional controls must be approved by OGC in Tallahassee. We perform the title work, notices to parties, land surveying or DRC recording associated with the DRC process. The following EC/IC services included in the Estimated Budget for up to four (4) Tracts: • DRC Consultation and Documentation (Attachment 5 and Shapefile Documentation) Note: We do compile the DRC or perform the title search, notices, land surveying for the DRC submittal). • Design/Specifications of Engineering Control (as necessary based on type of control). • Oversight for verification of placement of engineering control (clean soil cover, impervious surface, etc., variable depending on areas and IC). • Preparation of Engineering Control Maintenance Plan and Annual Inspection Certification Checklist. Additional Engineering hours have been included in this portion of the Estimate to provide Alternative Soil Cleanup Target Level at up to two (2) tracts, if appropriate. Page 12 of 25 010 1 6 F 9 W%C �. 1r: DAVIDSON tiNr3�N EERIM(B Investigative Derived Waste ODW) Investigation derived waste (IDW), including soil cuttings, soil cores, and development water will be managed is such a way as to not spread contamination. IDW containerization and disposal is not anticipated for this project and is not included in this proposal. Report The methods and results of the Environmental Assessments will be presented in summary reports which include but are not limited to the following items: • A description of the site history and environmental concerns; • Methodologies utilized to install the soil borings and monitoring wells and collect soil and groundwater samples for laboratory analysis; • Findings of the activities conducted, including soil boring/groundwater sampling logs, site maps depicting the sample locations, groundwater flow diagram, maps of delineated impacts to subsite surface environment, results of slug testing, chain -of -custody records, and copies of the laboratory analytical reports; • Recommendations regarding the environmental condition of the subject property and potential risks it may pose for the proposed intended future use based upon the findings; and • The report will be signed by a Professional Engineer or Geologist licensed in the State of Florida. • The report will be emailed to for review or a link for downloading reports will be provided. Page 13 of 25 C-AO 16F9 //0 UES". August 10, 2023 Davidson Engineering, INC 4365 Radio Road, STE 201 Naples, FL 34104 Attention: Mr. Jeff Davidson jeff@davidsonengineering.com Reference: SITE ASSESSMENT REPORT PROPOSAL Golden Gate Golf Course 4100 Golden Gate Parkway Naples, Collier County, FL 34116 UES Opportunity No. 0540.0523.00002 FDEP ID: ERIC 18024 Dear Mr. Davidson: Motortpks lasting Gonwrhntcol Enninnoring Lrvironmentol 8w,1ding Scionces S 3ofoty Inspprtions F., f odo C;ornpl;tinco Virtual Qe,ign Consulting Universal Engineering Sciences (UES) is pleased to provide this proposal to conduct a Site Assessment Report (SAR) at the above referenced site (the "subject property"). UES is providing this proposal as requested by Collier County, to complete site assessment activities within Tracts 1, 2, 3, 4 and 6 of the Golden Gate Golf (GGGC) Site and provide recommendations for rehabilitation completion. The scope of services presented under this proposal was developed based upon current readily available environmental documentation of the subject property. UES understands this assessment is being performed as an ongoing assessment of proposed development of property tracts. The following sections of this proposal present our scope of services, reporting, project assumptions, schedule, and fee for performing the SAR. We understand that the subject property project currently consists of four (4) separate tracts totaling approximately 147 acres of Collier County tax parcel (STRAP 36560040008). The subject property is currently comprised of vacant land used as a park. We understand it was formerly utilized as a golf course. Site assessment for the GGGC Site is ongoing and progressing as re -development of tracts occurs. Current soil and groundwater quality assessments confirm contaminated soil and groundwater located at the GGGC Site. Since the site assessment submittal and approved ISRP in January 2023, UES has completed additional groundwater and soil quality assessments at Tract 4 and Tract 6 of the GGGC Site. Additionally, soil quality data and an ISRP has been approved for the proposed utility line extension on March 22, 2023. Additional soil and groundwater assessment was completed for Tract 4 and Tract 6. It is understood that ongoing interim source removal activities will occur as scheduled during site development and will be ?4J VV; Idn ';vert,w North, l �I�i �I� cr��i•; ; (s (?3'1i �.8'J 4�i"S (,�nitr i .al=rrt it e,"Irtp;.cotn CA 16F9 managed according to approved soil management plans, Additional assessment is required at this time. Davidson Engineering, on behalf of Collier County, has requested a not to exceed project budget, based on the findings already presented, with the inclusion of assumptions of contamination, to avoid future additions to the project budget. The following proposal has been developed to help achieve this request, however, UES cannot predict the significance of environmental impact and therefore, additional work not included in this proposal may be required. SCOPE OF SERVICES All of the proposed tasks will be conducted in accordance with the following rules, standards and/or specifications: • Chapter 62-780, Section 600 Site Assessment, of the Florida Administrative Code (F.A.C.) • Florida Department of Environmental Protection (FDEP) Standard Operating Procedures for Field Activities (DEP-SOP-001/01) The following sections of this proposal present our scope of services, reporting, project assumptions, schedule, and fee for performing the following tasks to assist the real property owner in completing site rehabilitation activities at the project site on a per tract basis, in accordance with Chapter 62-780 F.A.C. SITE ASSESSMENT REPORT / INTERIM SOURCE REMOVAL PLAN / CONTROLS Soil and Groundwater Assessments UES will notify the appropriate public utility clearance service so that underground utilities or other subsurface structures for the subject property can be identified and marked prior to drilling operations. The public utility clearance service does not include the private markings of buried utilities or other subsurface structures, which are located on private property. Therefore, the current property owner will provide UES with information regarding the location of subsurface structures, utilities, and lines that are present at the subject property. This information will be utilized and relied upon by UES to layout our proposed soil boring locations prior to initiating drilling activities on the subject property. Soil Assessments UES will advance soil borings required beyond 2 feet below land surface (bls) at the subject property utilizing direct push technology via a truck- or track -mounted Geoprobe® rig equipped with a Macro -Core continuous -core sampler. The Geoprobe° rig uses both static and dynamic percussion forces to advance sampling apparatus to retrieve core samples. The Macro -Core sampler is a solid barrel, open steel tube that is four feet long, has a diameter of 2Y4 inches, and is equipped with a four- or five-foot plastic liner for sample collection, At times, a 3-inch diameter stainless steel hand -auger may be used for surface soil samples up to 2 feet bls. The soil sampling equipment will be properly decontaminated prior to the initiation of each soil boring. Soil classifications and descriptions will be based upon visual and manual Page 2 I6F9 characterizations of recovered soil samples and documented on Soil Boring Logs and/or field notes as applicable, Discrete soil samples from soil borings will be collected from the existing grade at the following depth intervals: 0 to 6 inches; 6 inches to 2 feet; and 2 feet to 4 feet or to the encountered water table or limestone unit. Soil samples will be immediately placed in clean, laboratory provided containers for laboratory analysis. Soil samples will be submitted to a NELAP approved laboratory for the following chemical analysis using applicable United States Environmental Protection Agency (USEPA) Methods, as stated in the scope of service for each Tract. • 6020/6010/7470 — 8 RCRA metals (arsenic, barium, cadmium, chromium, lead, mercury, selenium and silver) • 8081 - Organochlorine Pesticides (OCPs) • 8141 - Organ ophosphorous Pesticides (OPPs) • 8318 - Carbamates Pesticides (CPs) • 8270 - Triazine Pesticides (TPs) • 8151 - Chlorinated Herbicides (CHs) Groundwater Assessment Monitoring wellswill be installed at select locations at the subject property. The monitoring wells will be constructed of 2-inch diameter Schedule 40 PVC riser and 0.01-inch machine slotted well screen. For shallow aquifer wells, 10 feet of well screen will be installed to approximately 8-feet into the first encountered saturated zone (anticipated to be 12 to 15 feet bls). For intermediate/deep aquifer wells, 5 feet of well screen will be installed to approximately 35-feet set with a 6" diameter casing seal with neat cement grout to approximately 2 feet bls., with a 2" diameter interior well. Each well will be completed with a concrete well pad, expandable tight well cap, locking protective aluminum well casing or flush mounted vault (8" diameter bolted cover), The monitoring wells will be surveyed to determine top of casing (TOC) elevations with an accuracy of 0.01 feet. Purging and sampling will be conducted once the monitoring wells have been allowed to stabilize for at least 24 hours after well development. To determine hydraulic activities of aquifer, up to 3 monitoring wells per aquifer evaluation depth will be field tested for permeability via instantaneous change in head "slug- test", in general accordance with ASTM D4044 Prior to groundwater sampling acquisition, depth to water measurements will be gauged in the monitoring wells with an electronic water level meter to determine the appropriate purge volumes for each monitoring well. Well purging will be accomplished using a peristaltic pump fitted with polyethylene tubing. The monitoring wells will be purged at a low flow rate (less than one gallon per minute) while temperature, pH, conductivity, dissolved oxygen, and turbidity readings are collected to ensure stabilization of groundwater chemistry prior to sample collection. The groundwater stabilization readings will be documented on Groundwater Sampling Logs and appended to the report. Page 3 CA 1 6 F 9 Groundwater samples will be submitted to a NELAP approved laboratory for following chemical analysis via applicable United States Environmental Protection Agency (USEPA) Methods, as stated in the scope of service for each Tract. • 6020/6010/7470— 8 RCRA metals (arsenic, barium, cadmium, chromium, lead, mercury, selenium and silver) • 8081 - Organochlorine Pesticides (OCPs) Tract 1 Tract 1 has been merged with Tract 6 at this time, Please see Tract 6. Tract 2 Tract 2 includes a portion of former golf hole #18 Fairway and Green. This tract is project to be developed into a Collier County office facility. LIES proposes to complete soil borings for soil sample collection at low areas (depressions) located at each Green and Fairway for arsenic and OCPs (2 borings, 6 analytical samples). A groundwater sample will be collected at each location during this time for analysis of arsenic and OCPs via geo-probe tooling for groundwater screening. Additionally, UES proposes to collect a soil sample from the 6-inch sample depth at the Green, and Fairway depression location (2 total), for RCRA 8 metals, OCPs, OPPs, CPs, TPs and CHs, as per the Collier County Land Development Code (LDC), Section 3.08.00A.4,d. This initial portion of field work will take 1 day to complete, Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. However, for the purpose of this proposal, LIES will assume, that the average arsenic concentrations will exceed the residential SCTL and that at 1 location, and soil and groundwater will need to be further assessed for arsenic and OCPs. Therefore, LIES will include a second mobilization to complete 25 soil borings per location and 15 soil borings near the tract boundary lines for soil delineation and interim source removal/soil management plan development. Up to 120 soil samples from the 40 soil borings will be included for this mobilization for arsenic analysis and up to 15 samples will be analyzed for OCPs, collected from depth intervals up to 4 feet bls. Additionally, up to 4 permanent shallow monitoring wells (up to 15 feet bls) will be installed at the identified area for analysis of arsenic and OCPs. This mobilization is anticipated to take 3 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps, It is assumed that at this point a status/summary report will be required for submittal and review. For this proposal, LIES will assume that additional groundwater delineation will be required and that at 1 location and additional soil borings will be required to complete delineation, As such, LIES will include a third mobilization to complete up to 20 soil borings, to collect up to 60 soil samples for arsenic analysis Page 4 CA O 1 6 F 9 and install up to 2 additional shallow monitoring wells (up to 15 feet bls) and up to 3 intermediate/deep monitoring wells (up to 35 feet bls). This mobilization is anticipated to take 4 working days to complete, Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review, UES will assume that at this point, additional groundwater delineation will not be required to complete the site assessment reporting, and that at some point during the continued delineation of assumed arsenic impact, an Interim Source Removal Plan (ISRP), including a Soil Management Plan (SMP) will be completed for Tract 2, Tract 3 Tract 3 includes the north portion of former Tee #1, identified as remedial unit RU1, requiring delineation of arsenic and interim source removal activities as part of the BigShots Tract 4 development. The northern portion of RU1 has been delineated to commercial SCTL. The former use of this Tract was not reported in previous environmental assessments; however, it appears to have been a commercial building and parking lot north of the golf course, circa 1973 to 2005. Future development of this tract is unknown currently. Monitoring well MW-14 is located on this tract and arsenic was not detected in the groundwater. This tract appears to have little to no immediate assessment required. However, as a contingency for potential change in use, UES proposes to complete soil borings for soil sample collection at up to 20 randomly located for arsenic and QCPs (60 analytical samples). This field work will take 1 day to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. UES will assume that at this point, additional soil and groundwater delineation will not be required to complete the site assessment reporting for Tract 3. Tract 4 Tract 4, is currently proposed to be developed as a Veterans Assisted Living Facility. This tract includes the south portion of former Tee #1, remedial unit RU1 and the north portion of Tee 42, remedial unit RU31, requiring continued delineation of arsenic and interim source removal activities, Additionally remedial unit RU13 located in the fairway of former Hole #1 has been delineated and is ready of interim source removal in accordance with the approved SMP. Tract development is currently scheduled for this year, Monitor wells MW-1, MW-2, MW-3, MW-4 and MW-5 will need to be abandoned/plugged prior site development. During site development, UES proposes to assist with source removal documentation, testing and reporting at the 3 remedial units identified. UES proposes to complete 30 soil borings to delineate RU1 and RU31 and abandon the wells earmarked for demolition. It is anticipated that this field work will take 2 days to complete, Following this portion of Page 5 CAO 16F9 work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review, UES will include verification sampling of blended stockpiles of the RU soils generated from Tract 4 according to the approved SMP. The volume of soil generated after contractor blending activities is unknown, UES will provide a cost to sample up to 9 approximate 800 cubic -yard (CY) blended stockpile, as per the approved SMP, UES will assume that at this point, additional soil delineation will not be required to complete the site assessment reporting for Tract 4. However, after BigShots has been developed, UES will install up to 5 replacement shallow monitor wells and 1 intermediate/deep well and sample for arsenic. This mobilization is anticipated to take 4 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. For this proposal, UES will assume that the intermediate/deep groundwater will exceed GCTL and require arsenic delineation. As such, UES will include a third mobilization to install up to 3 intermediate/deep monitoring wells (up to 35 feet bls), and sample for arsenic. This mobilization is anticipated to take 3 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. Tract 6 Tract 6 (including Tract 1), is projected to remain a golf course, redeveloped to include 6 new lakes. The material removed for the proposed lake areas was previously assessed and 2 lake borrow areas (LBA) were identified as remedial units LBA3 and LBAS, having arsenic concentrations exceeding the C/I SCTL. These remedial units require continued delineation of arsenic and interim source removal activities. Additionally remedial units located within the tract may require interim source removal, in accordance with the approved SMP, Three former golf holes, Ws 15, 16 and 17 are located in Tract 1. UES proposes to complete soil borings for soil sample collection at low areas (depressions) located at each Green, Tee, and Fairway for arsenic and OCPs (9 boring, 27 analytical samples). Additionally, UES proposes to collect a soil sample from the 6-inch sample depth at a predetermined Green, Tee and Fairway depression location (3 total), for RCRA 8 metals, OCPs, OPPs, CPs, TPs and CHs, as per the Collier County Land Development Code (LDC), Section 3.08.00A.4.d. This portion of field work will take 1 day to complete. Monitor wells MW-6, MW-7, MW-8, MW-9, MW-10 and MW-11, located within the LBAs will likely need to be abandoned/plugged prior site development. During site development, UES proposes to assist with source removal documentation, testing and reporting at the 2 LBA remedial units identified. The former golf maintenance facility requires additional delineation of arsenic and dieldrin impact. UES proposes to complete up to 60 soil borings to delineate RULBA3 and RULBAS, and abandon the wells earmarked for demolition. Also, within the maintenance area, UES will complete up to 10 soil boring for Page 6 CA i 16F9 additional analysis of arsenic and OCP. collect a surface water sample from the adjacent lake, install 3 shallow monitor wells and 1 intermediate/deep monitor followed by groundwater sampling, for lab analysis of arsenic and OCP. It is anticipated that this field work will take 4 days to complete, Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. For this proposal, UES will assume groundwater and soil will need to be further assessed for arsenic and OCPs at up to 3 locations in former Tract 1, and that additional groundwater delineation will be required at the maintenance facility, including an additional 3 shallow wells and 3 intermediate/deep wells. Included is a mobilization to complete 25 soil borings per location in former Tract 1, and 25 soil borings near the tract boundary lines for soil delineation and interim source removal/soil management plan development. Up to 300 soil samples from the 100 soil borings will be included for this mobilization for arsenic analysis and up to 45 samples will be analyzed for OCPs, collected from depth intervals up to 4 feet bls. Additionally, up to 3 permanent shallow monitoring wells (up to 15 feet bls) will be installed at the identified areas for analysis of arsenic and OCPs. Further, UES will include in this mobilization up to 25 soil borings per up to 3 RU locations and 25 soil borings near the tract boundary lines for soil delineation and interim source removal/soil management plan development. Up to 225 soil samples from up to 75 soil borings will be included for this mobilization for arsenic analysis and up to 36 samples will be analyzed for OCPs, collected from depth intervals up to 4 feet bls. This mobilization is anticipated to take 9 working days to complete. Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review, and that additional soil and groundwater delineation will not be required to complete the site assessment reporting for Tract 6. For this proposal, UES will assume that at 1 of the 3 monitoring well locations in former Tract 1, additional groundwater delineation will be required and that at 2 locations additional soil borings will be required to complete delineations. As such, UES will include a third mobilization to complete up to 50 soil borings, to collect up to 150 soil samples for arsenic analysis and install up to 4 additional shallow monitoring wells (up to 15 feet bls) and up to 3 intermediate/deep monitoring wells (up to 35 feet bls). This mobilization is anticipated to take 4 working days to complete, Following this portion of work, additional assessment activities will be evaluated, and a meeting will be called with the client for determination of appropriate next steps. It is assumed that at this point a status/summary report will be required for submittal and review. UES will include verification sampling of blended stockpiles of the RU soils generated from Tract 6 according to the approved SMP. The volume of soil generated after contractor blending activities is unknown. UES will provide a cost to sample up to 10 approximate 800 CY blended stockpile, as per the approved SMP. Also, an additional round of groundwater quality sampling, analysis and reporting will be included for arsenic and OCP analysis for up to 12 monitoring wells, estimated to take approximately 1,5 working days to complete the field work. Page 7 16F9 Engineering Controls and Institutional Controls If the concentrations of Contaminants of Concern are above the cleanup target levels and Conditional- SRCO criteria are met, the real property owner may agree to certain restrictions on the use of their property. These restrictions could take the form of Engineering Controls (EC) or Institutional Controls (IC). The property on which contamination remains in soil or groundwater must implement Institutional Controls or both Engineering and Institutional Controls before an NFA With Conditions will be issued, Engineering controls may take the form of hydraulic control, capping or otherwise immobilizing or containing contamination. Engineering and Institutional controls are not mutually exclusive, and both are required when Engineering Controls are necessary. All institutional controls must be approved by OGC in Tallahassee. UES does perform the title work, notices to parties, land surveying or DRC recording associated with the DRC process. The following EC/IC services UES has included in the Estimated Budget for up to four (4) Tracts as unit cost per hour: • DRC Consultation and Documentation (Attachment S and Shapefile Documentation) Note: UES does compile the DRC or perform the title search, notices, land surveying for the DRC submittal) • Design/Specifications of Engineering Control (as necessary based on type of control), • Oversight for verification of placement of engineering control (clean soil cover, impervious surface, etc., variable depending on areas and IC). • Preparation of Engineering Control Maintenance Plan and Annual Inspection Certification Checklist. Additional Engineering hours have been included in this portion of the Estimate to provide calculate Alternative Soil Cleanup Target Level at up to two (2) tracts, if appropriate. Investigative Derived Waste (IDW) Investigation derived waste (IDW), including soil cuttings, soil cores, and development water will be managed is such a way as to not spread contamination. IDW containerization and disposal is not anticipated for this project and is not included in this proposal. Report The methods and results of the Environmental Assessments will be presented in summary reports which include but are not limited to the following items: • A description of the site history and environmental concerns; • Methodologies utilized to install the soil borings and monitoring wells and collect soil and groundwater samples for laboratory analysis; • Findings of the activities conducted, including soil boring/groundwater sampling logs, site maps depicting the sample locations, groundwater flow diagram, maps of delineated impacts to sub - Page 8 nO 1 6 F 9 surface environment, results of slug testing, chain -of -custody records, and copies of the laboratory analytical reports; • Recommendations regarding the environmental condition of the subject property and potential risks it may pose for the proposed intended future use based upon the findings; and • The report will be signed by a Professional Engineer or Geologist licensed in the State of Florida. • The report will be emailed to for review or a link for downloading reports will be provided, PROJECT ASSUMPTIONS The following project assumptions apply to this proposal: • Costs provided are for budgetary purposes on a planning level and will vary based on actual conditions encountered. • The client will provide UES with written authorization to proceed with the proposed scope of services and associated fee prior to UES mobilizing to the subject property. • The client will be responsible to coordinate with the property owner(s) to move vehicles and equipment that may interfere with the advancement of the proposed soil borings/monitoring wells and access will be granted to the subject property, including opening gates to allow the drilling equipment to gain access to proposed drilling areas as well as access to the interiors of any onsite buildings, • The soil borings and monitoring wells can be installed using standard drilling equipment and the proposed drilling locations are accessible with track- or truck -mounted drilling equipment. • Costs may increase due to delays caused by limited or restricted site access. • Unforeseen conditions encountered during drilling which require excessive time and/or stand by time will require additional labor and equipment charges. • Containerization, characterization, and disposal of investigation -derived waste is not included under this contract. • UES will not be responsible for adverse weather conditions that cause excessive delays and fees to complete the scope of services, • These assessment activities will be completed on a standard work schedule of Monday through Friday 8:00 AM to 5:00 PM (excluding holidays) and a standard five (5) to seven (7) day laboratory sample analysis turnaround basis. • Surface conditions at each of the proposed soil boring locations consist of non -reinforced asphalt or concrete not exceeding six (6) inches in thickness and no concrete or asphalt cutting will be required. • Fees presume that Level D personal protective equipment is adequate for all site activities, • Scope of services detailed in this proposal will vary based on actual site conditions encountered. UES will only invoice for actual services provided according to the Estimated Budget, UES will not exceed the Estimated Budget without written approval from the client. • Additional unforeseen assessment activities could be required based on future assessment findings. Page 9 16F9 041off 14it] _-0 The field activities will be scheduled following client direction and approval of field activities. Field work mobilizations described in this proposal will take approximately 2 weeks to set up/schedule. It is estimated that the field activities, including but not limited to; soil borings; monitoring well installations; surveying wells; well purging; sampling and hydraulic conductivity (slug) testing, will be completed onsite over multiple mobilizations as described above. Final laboratory analytical results will be available approximately 10 business days following the date that the laboratory receives the samples. Reports will be delivered to the client approximately 2 to 4 weeks after the final laboratory report is received. Please note that scheduling for the drilling field work may vary depending on current local market conditions. ESTIMATED BUDGET We propose to conduct the scope of work described in this proposal, in accordance with our General Conditions as per the attached Estimated Budget with a not -to -exceed value of $478,246.00, This proposal shall remain effective for 30 days. Should you require more than 30 days to formally authorize us to proceed, we will require an update of our proposal to account for any changes in the scope of services and associated fees, If you would like us to proceed, please sign the enclosed Work Authorization/Proposal Acceptance Form and return one copy to UES for our files. This proposed scope of services and associated fee will be conducted in accordance with our Terms and Conditions (see attachment to this proposal). This fee estimate includes an electronic copy of the SAR report being submitted upon project completion. Hard copies can be provided upon request. Compiling and shipping of hard copies via overnight delivery service will be provided at the client's request at cost plus 15%. Universal Engineering Sciences appreciates this opportunity to offer our services and we are looking forward to the assignment. If you have questions or comments regarding the information in this proposal or if we can be of further assistance, please do not hesitate to contact the undersigned. Respectfully submitted, UNIVERSAL NGINEERING SCIENCES Scott McManus, PG Environmental Department Manager— Fort Myers, Florida (239) 489-2443 smcmanuseuniversalengineering.com Distribution: Client via email Enclosures: Work Authorization/Proposal Acceptance Form Estimated Budget Schedule UES General Conditions CAO Page I M�O. ;A, ME." a W UNIVERSAL ENGINEERING SCIENCES EXHIBIT 'B' FIGURE 1: SAMPLE LOCATION MAP Golden Gate Golf Course Site 4100 Golden Gate Parkway Naples, Collier County, FL 34116 UES Project No. 0540.2200073.0000 Am NO �a- ON .' �� �c'e "R Subject Property '!¢ i x r f' h .. t,. Page 14 of 25'ry, ;