Funding Information:

Org. Code E.O. Object Code Budget Entity Appropriation

Category Grant # Project # Year Amount

☐ Additional Funding Information attached on separate page.

Rev. 8/26/2020

STATE OF FLORIDA

DEPARTMENT OF ENVIRONMENTAL PROTECTION

Task Assignment This Task Assignment (TA) is entered into between the Parties named below, pursuant to Contract Number: .

1. TA Number: TA Completion Date:

TA Description:

2. Parties State of Florida Department of Environmental Protection

(Department)

Department Project Manager: Department Project Manager Phone:

Contractor Name: (Contractor ) ntractor’st ’s Project Manager: ontractor’s t’s Project Manager Phone:

3. Project Number:

(If different from TA Number)

Project Location(s):

Project Name:

4. As consideration for the services rendered by Contractor under the terms of this TA, the Department shall pay the Contractor on the following bases, up to the Total TA Value as indicated below:

☐ Fixed Price:

☐ Fixed Unit Rate: (Extended Price)

☐ Cost Reimbursement:

Total TA Value:

5. The Parties agree to comply with the terms and conditions of the underlying the Contract, and the following attachments which are hereby incorporated by reference:

Attachment 1:

☐ Additional Attachments (if necessary):

IN WITNESS WHEREOF, this TA shall be effective on the last date signed below.

State of Florida Department of Environmental Protection CONTRACTOR Department Name:

Title:

Secretary or Designee

(Authorized Signature) (Authorized Signature) Date:

☐ Additional signatures attached on separate page.

HW683

DC005A Completion October 14, 2022

This Task Assignment authorizes GEO to conduct system decommissioning, groundwater monitoring and site maintenance in accordance with the GEO scope of work, cost estimate, bid documentation, and schedule received on January 26, 2022

Evan Miller 850-245-8928 Contractor Contractor

Contractor Contractor

Contractor Contractor

Contractor

Geosyntec

Geosyntec

Todd Kafka 813-379-4396

ERIC_4783

603 – 617 North Maryland Avenue Plant City, Florida

Walker Plaza

✔ $ 19,880.58

$ 19,880.58

Scope of Work

Todd Kafka

Contract Manager

2/1/22

Todd Kafka, P.G. Digitally signed by Todd Kafka, P.G.

Date: 2022.02.01 15:32:45 -05'00'

William E. Burns, Jr.

William E. Burns, Jr. Digitally signed by William E. Burns, Jr.

Date: 2022.02.01 09:21:07 -05'00'

N/A

Task Assignment Notification/Change Order Deliverables and Invoice Schedule Attachment

WCP TAFORM 04-2017

Contract Number:

Task Assignment #:

Deliverables:

Deliverable Deliverable Due Date

Invoice Schedule:

Requirements for Invoice Submittal Amount to be Invoiced

TOTAL COST

Submittal of Decommissioning Letter Report - Subtask 2 04/29/2022

Submittal of Groundwater Monitoring Report, ADaPT Files, and GIS data tables - Subtask 3,4 04/15/2022

Submittal of Final IDW manifest - Subtask 5 04/29/2022

Submittal of Quarterly Vegetation Maintenance Summary Emails: Project Management - subtask 1,6 07/15/2022

Receipt and approval of Decommissioning Letter Report - Subtask 2 $ 8,805.55

Receipt and approval of Groundwater Monitoring Report, ADaPT Files, and GIS data tables - Subtask 3,4 $ 7,571.48

Receipt and approval of Final IDW manifest - Subtask 5 $ 355.75

Receipt and approval of Quarterly Vegetation Maintenance Summary Emails: Project Management - subtask 1,6 $ 3,147.80

$ 19,880.58

HW683

DC005A

Printed on recycled paper.

FLORIDA DEPARTMENT OF

Environmental Protection

Bob Martinez Center 2600 Blair Stone Road

Tallahassee, FL 32399-2400

Ron DeSantis Governor

Jeanette Nuñez Lt. Governor

Shawn Hamilton Secretary

To: HW683 Contract Negotiation File Walker Plaza Plant City, Florida

ERIC_4783

From: Evan Miller, Project Manager Date: January 27, 2022 Subject: Negotiation Summary

HW683 DC005A

This Task Assignment authorizes Geosyntec

Subtask 1: Project Management An automatic calculation based upon total direct labor hours determines the labor hours within this subtask.

Subtask 2 – SVE System Decommissioning This subtask includes labor and expenses to decommission the SVE system including the following:

• Remove approximately 700 feet of 2-inch diameter Schedule 40 polyvinyl chloride (PVC) conveyance piping in attic crawl space and on building exterior near SVE system compound;

• Remove all conveyance pipe metal hanging straps and screws from wooden trusses in attic crawl space;

• Remove all conveyance piping Unistrut on building exterior;

• Seal interior sheetrock firewall penetrations using sheetrock patch (2 walls to be patched);

• Seal exterior building penetrations by repairing stucco;

• Disconnect and remove underground, electrical wiring in conduit (approximately 40 feet) from SVE system to temporary power pole (overhead electrical power line disconnected from temporary power pole by Tampa Electric Company in June 2021). The underground conduit will be cut and capped below land surface;

• Dispose of all PVC pipe, metal hanging straps, Unistrut, electrical conduit, etc. from the decommissioning activities at proper off-Site landfill; and

• Properly prepare SVE system for long-term storage by sealing or capping all penetrations and closing all valves.

Geosyntec will keep the SVE system on site to be used later on at another site.

Geosyntec will prepare a brief letter report that documents the SVE system decommissioning activities and includes a photographic log of the activities.

MEMORANDUM

Error! Reference source not found.

January 27, 2022 Page Two

Geosyntec proposes using one field staff to provide oversight throughout the duration of the decommissioning activities.

Geosyntec will prepare a brief letter report that documents the SVE system decommissioning activities and includes a photographic log of the activities.

Subtask 3 – Groundwater Monitoring Geosyntec will collect groundwater samples from two on-Site monitoring wells (i.e., MW002 and MW006) and six off-Site monitoring wells (i.e., MW010 to MW012 and MW016 to MW018). Prior to groundwater sampling, Geosyntec will gauge and record the depth-to-water (DTW) from 22 monitoring wells within a 24-hour period, including from 16 wells that are not anticipated to be sampled on the first day of field activities. Geosyntec will collect a total of eight groundwater samples using a peristaltic pump, and one field duplicate will be collected for quality assurance and quality control purposes. Field activities will be conducted in accordance with the FDEP Standard Operating Procedures. Groundwater samples will be submitted under chain of custody protocol for laboratory analysis of volatile organic halocarbons (VOHs) by Environmental Protection Agency Method 8260B. Based on previous sampling events, it is estimated that purge water generated during sampling activities will be containerized in one, 55-gallon drum. Geosyntec will collect one sample for VOHs to update the waste characterization analytical results for disposal (see Subtask 5).

This subtask also includes the preparation of this SOW and LOE.

Subtask 4 – Groundwater Monitoring Report Approximately 30 days after receipt of groundwater analytical results, Geosyntec will submit an Annual Groundwater Monitoring Report that will be signed and sealed by a licensed Florida engineer or geologist and include field forms and updated tables and figures.

Subtask 5 - IDW Management This subtask includes generation and management of groundwater investigation-derived waste (IDW), which is estimated to include one drum (see Subtask 3).

Subtask 6 – Two Quarters of Vegetation Maintenance This subtask includes labor and expenses to maintain vegetation within the SVE system compound for four quarters while the SVE system remains on-Site. Geosyntec will manually grub vegetation and/or utilize a weed trimmer to maintain vegetation within the SVE system compound. Additionally, Geosyntec will inspect the condition of the seals and/or caps installed on the SVE system as part of preparation for long-term storage during the vegetation maintenance visits. Geosyntec will photo document the SVE system compound before and after the vegetation maintenance activities.

Geosyntec will prepare quarterly email summaries of each events that include select photos of the vegetation maintenance activities.

The FDEP Project Manager agrees to the scope of work and final cost associated with this Task Assignment. The final cost for this Task Assignment is $19,880.58 with 117 labor hours.

Geosyntec may invoice following the schedule established in the Deliverables and Invoice Schedule Attachment, which accompanies the Task Assignment Notification Form.

FDEP COST ESTIMATEContractor: Geosyntec Consultants

Date: 1/26/2022

Task #: DC029I SubTask 1 Project Management SubTask 6 2 Quarters Vegetation Maintenance

Site: Walker Plaza SubTask 2 SVE System Decommissioning SubTask 7

Activity/Phase: System Decomissioning/ SubTask 3 Groundwater Monitoring SubTask 8

Project Manager: J. Mills SubTask 4 Groundwater Monitoring Report SubTask 9

SubTask 5 IDW Management SubTask 10

Totals 1 2 3 4 5 6 7 8 9 10 Labor Rate Category

$39.42 Project Manager J. Mills 12 12.2 $68.75 Principal T. Kafka 2 0 0 2 0 0 0 0 0 0 $46.15 Project Professional M. Hensley 6 0 0 6 0 0 0 0 0 0 $39.42 Professional J. Mills 35 12 2 16 1 4 0 0 0 0 $32.21 Senior Staff Professional A. Langteau 5 0 0 5 0 0 0 0 0 0 $30.53 Staff Professional L. Varner 55 24 21 0 0 10 0 0 0 0 $27.88 Administrative Assistant A. Acosta 2 1 0 1 0 0 0 0 0 0

Total Hours 117 12 37 23 30 1 14 0 0 0 0

Direct Labor $4,169.77 $479.71 $1,233.64 $719.97 $1,234.05 $39.42 $462.98 $0.00 $0.00 $0.00 $0.00

Overhead 172.70% $7,201.20 $828.46 $2,130.50 $1,243.39 $2,131.20 $68.08 $799.57 $0.00 $0.00 $0.00 $0.00 Gen & Admin 0.00% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Fringe 0.00% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Labor $11,370.97 $1,308.17 $3,364.14 $1,963.36 $3,365.25 $107.50 $1,262.55 $0.00 $0.00 $0.00 $0.00

Travel Vehicle Rental $720.00 $240.00 $240.00 $0.00 $0.00 $240.00 $0.00 $0.00 $0.00 $0.00

REV: 02/03 CEF ARCADIS Page 1

FDEP COST ESTIMATEContractor: Geosyntec Consultants

Date: 1/26/2022

Task #: DC029I SubTask 1 Project Management SubTask 6 2 Quarters Vegetation Maintenance

Site: Walker Plaza SubTask 2 SVE System Decommissioning SubTask 7

Activity/Phase: System Decomissioning/ SubTask 3 Groundwater Monitoring SubTask 8

Project Manager: J. Mills SubTask 4 Groundwater Monitoring Report SubTask 9

SubTask 5 IDW Management SubTask 10

Totals 1 2 3 4 5 6 7 8 9 10 Mileage Costs $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Air Fare $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Per diem + Hotel $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Travel $720.00 $240.00 $240.00 $0.00 $0.00 $240.00 $0.00 $0.00 $0.00 $0.00

Subcontractor (Equipment Procurement) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

$0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subcontractor Subtotal $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Procurement Fee $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Subcontractor Cost $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subcontractor (Services Procurement) Drilling (Conventional) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Drilling (Non-conventional) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Mobile Laboratory $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Surveying $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

IDW $125.00 $0.00 $0.00 $0.00 $125.00 $0.00 $0.00 $0.00 $0.00 $0.00

Utilities $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 decommisioning $4,350.00 $4,350.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

$0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subcontractor Subtotal $4,475.00 $4,350.00 $0.00 $0.00 $125.00 $0.00 $0.00 $0.00 $0.00 $0.00 Handling Fee $447.50 $435.00 $0.00 $0.00 $12.50 $0.00 $0.00 $0.00 $0.00 $0.00 Total Subcontractor Cost $4,922.50 $4,785.00 $0.00 $0.00 $137.50 $0.00 $0.00 $0.00 $0.00 $0.00

Laboratory Analytical Costs $700.00 $0.00 $700.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Fast Turnaround Charges $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Sample Shipping $110.00 $0.00 $110.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Laboratory $810.00 $0.00 $810.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Field Expenses Personal Protection $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Expendables $240.00 $80.00 $80.00 $0.00 $0.00 $80.00 $0.00 $0.00 $0.00 $0.00 Equipment (Drilling related) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (Analytical related) $580.00 $0.00 $580.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (IDW related) $100.00 $0.00 $0.00 $0.00 $100.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (Other) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Field Expenses $920.00 $80.00 $660.00 $0.00 $100.00 $80.00 $0.00 $0.00 $0.00 $0.00

Subtotal $18,743.47 $1,308.17 $8,469.14 $3,673.36 $3,365.25 $345.00 $1,582.55 $0.00 $0.00 $0.00 $0.00 Completion Fee $1,137.11 $130.82 $336.41 $196.34 $336.53 $10.75 $126.26 $0.00 $0.00 $0.00 $0.00

Total Estimated Cost $19,880.58 $1,438.99 $8,805.55 $3,869.70 $3,701.78 $355.75 $1,708.81 $0.00 $0.00 $0.00 $0.00

REV: 02/03 CEF ARCADIS Page 2

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Walker Plaza SUBTASK: SVE System Decommissioning

DATE: 1/26/2022

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Professional J. Mills 12

Staff Professional L. Varner 24

Administrative Assistant A. Acosta 1

TOTAL LABOR 37

VEHICLE TYPE RATE UNIT USEAGE

Truck $120.00 Day 2 $240.00 Subtotal $240.00

TOTAL VEHICLE $240.00

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE COST

Other Action Environmental SVE decommissioning $4,350.00 $4,350.00

Subtotal $4,350.00

TOTAL SUB $4,350.00

LABORATORY COSTS

TOTAL LAB $0.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables

$40.00 Day 2 $80.00 Subtotal $80.00

TOTAL EQUIPMENT $80.00

Report assembly and PDF compilation (1 hr)

Prepare decomissioning specifications and requirements (4 hr); health and safety THAs (2 hr); letter report preparation (6 hr)

Field preparation (2 hr); mobe/demob (2 d @ 1 hr/d = 2 hr); field oversight of system decommissioning (20 hr)

FINAL --7/24/96

SUBTASK: Groundwater Monitoring

DATE: 1/26/2022

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Professional J. Mills 2

Staff Professional L. Varner

TOTAL LABOR 23

VEHICLE TYPE RATE UNIT USEAGE

Truck $120.00 Day 2 $240.00 Subtotal $240.00

TOTAL VEHICLE $240.00

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

TOTAL SUB $0.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC

VOCs 8 wells, 1 dup, 1 IDW sample $70.00 9 1 $700.00

Subtotal $700.00 Shipping

Small Cooler (0 to 25 lbs) $110.00 1 $110.00 Subtotal $110.00

TOTAL LAB $810.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Analytical Related

Groundwater Sampling Kit $290.00 Day 2 $580.00 $0.00

Subtotal $580.00 Expendables

$40.00 Day 2 $80.00 Subtotal $80.00

TOTAL EQUIPMENT $660.00

RPO coordination and logistics to access interior wells (2 hr)

Field preparation (2 hr); mobe/demob (2 d @ 1hr/d = 2 hr); collect 16 water levels from MWs not sampled (2 hr); sample 8 monitoring wells (8 @ 1.5 hr/well = 12 hr); equipment calibration (2 d @ 0.5 hr/d = 1 hr); IDW management (1 hr); sample management (1 hr)

SUBTASK: Groundwater Monitoring Report

DATE: 1/26/2022

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Principal T. Kafka 2

Project Professional M. Hensley 6

Professional J. Mills 16

Senior Staff Professional A. Langteau 5

Administrative Assistant A. Acosta 1

TOTAL LABOR 30

VEHICLE TYPE RATE UNIT USEAGE

TOTAL VEHICLE $0.00

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

TOTAL SUB $0.00

LABORATORY COSTS

TOTAL LAB $0.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

TOTAL EQUIPMENT $0.00

Report assembly and PDF compilation (1 hr)

Data evaluation/interpretation and PG certification on report (2 hr)

Prepare 6 report figures (6 hr)

Prepare annual groundwater monitoring report (16 hr)

ADaPT & GIS table updates (22 water levels, 9 samples = 31 data points @ 8 min/point = ~4 hr); GIS data table checker and submittal (1 hr)

SUBTASK: IDW Management

DATE: 1/26/2022

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Professional J. Mills 1

TOTAL LABOR 1

VEHICLE TYPE RATE UNIT USEAGE

TOTAL VEHICLE $0.00

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE COST

IDW

T&D - UES 1 drum $125.00 $125.00

Subtotal $125.00

TOTAL SUB $125.00

LABORATORY COSTS

TOTAL LAB $0.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

IDW Related

Drum $100.00 drum 1 $100.00 Subtotal $100.00

TOTAL EQUIPMENT $100.00

Prepare IDW manifest (1 hr)

SUBTASK: 2 Quarters Vegetation Maintenance

DATE: 1/26/2022

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Professional J. Mills 4

Staff Professional L. Varner 10

TOTAL LABOR 14

VEHICLE TYPE RATE UNIT USEAGE

Truck $120.00 Day 2 $240.00 Subtotal $240.00

TOTAL VEHICLE $240.00

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

TOTAL SUB $0.00

LABORATORY COSTS

TOTAL LAB $0.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables

$40.00 Day 2 $80.00 Subtotal $80.00

TOTAL EQUIPMENT $80.00

RPO coordination (1 hr/quarter = 2 hr); prepare quarterly email summaries (1 hr/quarter = 2 hr)

Field preparation (1 hr/quarter = 2 hr); mobe/demobe (1 hr/quarter = 2 hr); remove vegetation in SVE compound and inspect long-term storage of SVE system (3 hr/quarter =

12802 Tampa Oaks Blvd, Suite 151 Tampa, Florida 33637

PH 813.558.0990

FAX 813.558.9726

www.geosyntec.com

FR2711/Walker Plaza (ERIC_4783)_SOW_Decommissioning & GW Sampling_Jan 22 final

26 January 2022

Mr. Evan Miller Florida Department of Environmental Protection Waste Cleanup Program 2600 Blair Stone Road Tallahassee, FL 32399-2400

Subject: SOW/LOE - SVE System Decommissioning, Annual Groundwater Monitoring, and 2 Quarters Vegetation Maintenance Walker Plaza (ERIC_4783) 603 – 617 North Maryland Avenue Plant City, Florida

Dear Mr. Cohen:

Geosyntec Consultants, Inc. (Geosyntec) has prepared the following scope of work (SOW) and proposed level of effort (LOE) to perform decommissioning of the soil vapor extraction (SVE) system, annual groundwater monitoring, and two quarters of vegetation maintenance within the SVE system compound at the Walker Plaza site (herein, the “Site”) located in Plant City, Florida.

The following scope of work was developed based on the meeting between Mubeen Darji with the Florida Department of Environmental Protection (FDEP) and Todd Kafka, Joseph Bartlett, and James Mills with Geosyntec conducted on 21 September 2021. During the meeting, the FDEP and Geosyntec agreed that SVE cleanup operations were complete based on confirmatory soil sampling results collected in July 2021 and that annual groundwater monitoring should continue for a subset of wells within the existing monitoring well network to evaluate stability of the groundwater plume over time. Lastly, the FDEP and Geosyntec agreed to stage the SVE system on-Site within the fenced SVE compound until the system can be reused at another drycleaner site with the need for a similar small SVE system; staging the SVE system will require quarterly vegetation maintenance of the compound.

Subtask 1 – Project Management

James Mills will serve as the Project Manager for the proposed SOW. Costs associated with this subtask are directly computed.

Subtask 2 – SVE System Decommissioning

This subtask includes labor and expenses to decommission the SVE system including the following:

• Remove approximately 700 feet of 2-inch diameter Schedule 40 polyvinyl chloride (PVC) conveyance piping in attic crawl space and on building exterior near SVE system compound;

• Remove all conveyance pipe metal hanging straps and screws from wooden trusses in attic crawl space;

• Remove all conveyance piping Unistrut on building exterior;

• Seal interior sheetrock firewall penetrations using sheetrock patch (2 walls to be patched);

• Seal exterior building penetrations by repairing stucco;

• Disconnect and remove underground, electrical wiring in conduit (approximately 40 feet) from SVE system to temporary power pole (overhead electrical power line disconnected from temporary power pole by Tampa Electric Company in June 2021). The underground conduit will be cut and capped below land surface;

• Dispose of all PVC pipe, metal hanging straps, Unistrut, electrical conduit, etc. from the decommissioning activities at proper off-Site landfill; and

• Properly prepare SVE system for long-term storage by sealing or capping all penetrations and closing all valves.

The following components of the SVE system will remain after the decommissioning:

• SVE system compound including SVE system with exhaust stack and four anchors, geotextile fabric liner, and chain-link fencing with privacy slats;

• Temporary power pole;

• Metal flashing covering the former penetrations of the conveyance piping on the building exterior; and

• Four interior vapor extraction wells (i.e., VEW01 to VEW04) and associated 2-inch PVC conveyance piping that runs vertically from each vapor extraction well through the drop tile ceiling and into the attic crawl space (in the event the extraction wells are necessary for future remediation efforts at the Site); the conveyance piping will be cut approximately 1-foot above the attic floor and sealed with a 2-inch diameter PVC end cap.

Action Environmental was the lowest bidder for decommissioning the SVE system and is the recommended contractor. The decommissioning bids are provided in Attachment A. Action Environmental anticipates the decommissioning activities can be completed in 2 days. Geosyntec proposes using one field staff to provide oversight throughout the duration of the decommissioning activities.

Geosyntec will prepare a brief letter report that documents the SVE system decommissioning activities and includes a photographic log of the activities.

Subtask 3 – Groundwater Monitoring

Geosyntec last conducted groundwater sampling at off-Site monitoring well locations in December 2020 and at two locations on-Site in July 2021. The purpose of following groundwater sampling plan is to monitor wells with exceedances on- and off-Site to evaluate the extent of groundwater contamination on an annual basis.

Geosyntec will collect groundwater samples from two on-Site monitoring wells (i.e., MW002 and MW006) and six off-Site monitoring wells (i.e., MW010 to MW012 and MW016 to MW018).

Prior to groundwater sampling, Geosyntec will gauge and record the depth-to-water (DTW) from 22 monitoring wells within a 24-hour period, including from 16 wells that are not anticipated to be sampled on the first day of field activities. Geosyntec will collect a total of eight groundwater samples using a peristaltic pump, and one field duplicate will be collected for quality assurance and quality control purposes. Field activities will be conducted in accordance with the FDEP Standard Operating Procedures. Groundwater samples will be submitted under chain of custody protocol for laboratory analysis of volatile organic halocarbons (VOHs) by Environmental Protection Agency Method 8260B. Based on previous sampling events, it is estimated that purge water generated during sampling activities will be containerized in one, 55-gallon drum.

Geosyntec will collect one sample for VOHs to update the waste characterization analytical results for disposal (see Subtask 5).

This subtask also includes the preparation of this SOW and LOE.

Subtask 4 – Groundwater Monitoring Report

Approximately 30 days after receipt of groundwater analytical results, Geosyntec will submit an Annual Groundwater Monitoring Report that will be signed and sealed by a licensed Florida engineer or geologist and include field forms and updated tables and figures. The field forms will consist of groundwater sampling, calibration, DTW, and drum logs generated during sampling activities. The tables will include (i) DTW measurements, (ii) groundwater analytical results for VOHs, and (iii) geochemical field parameters. The figures will include (i) Site location Plan, (ii)

Site map, (iii) groundwater elevation contours in the surficial aquifer, (iv) groundwater elevation contours in the intermediate aquifer, (v) groundwater analytical results in the surficial aquifer, and

(vi) groundwater analytical results in the intermediate aquifer.

This subtask also includes time to updates the FDEP ADaPT files and associated GIS data tables for this Site after receipt of the analytical data.

Subtask 5 - IDW Management

This subtask includes generation and management of groundwater investigation-derived waste (IDW), which is estimated to include one drum (see Subtask 3). Universal Environmental Solutions, LLC. is the lowest cost provider of transportation and disposal services (per drum).

Geosyntec will review the generation of a waste characterization profile as well as prepare the IDW manifest. The IDW transportation and disposal quotes are provided in Attachment B.

Subtask 6 – Two Quarters of Vegetation Maintenance

This subtask includes labor and expenses to maintain vegetation within the SVE system compound for two quarters while the SVE system remains on-Site (February through June). Geosyntec will manually grub vegetation and/or utilize a weed trimmer to maintain vegetation within the SVE system compound. Geosyntec assumes any vegetation or trash that is removed from the SVE system can be disposed in the dumpster on-Site. Additionally, Geosyntec will inspect the condition of the seals and/or caps installed on the SVE system as part of preparation for long-term storage during the vegetation maintenance visits. Geosyntec will photo document the SVE system compound before and after the vegetation maintenance activities.

Geosyntec will prepare quarterly email summaries of each event that include select photos of the vegetation maintenance activities.

Invoice and Deliverable Schedule

Please note the following schedule is contingent on FDEP review and approval of this SOW/LOE within two weeks of submittal. We have tentatively scheduled groundwater sampling for the week of 2/28/2022.

Subtask Deliverable Deliverable Date Invoice Amount

2 Submittal of Decommissioning Letter Report 4/29/2022 $8,805.55

3, 4 Submittal of Groundwater Monitoring Report, ADaPT Files, and GIS data tables 4/15/2022 $7,571.48

5 Submittal of Final IDW manifest 4/29/2022 $355.75

1, 6 Submittal of Quarterly Vegetation Maintenance Summary Emails 7/15/2022 $3,147.80

Total $19,880.58

CLOSURE

As always, it is a pleasure to work with the FDEP. If you require any additional information or have any questions, please contact us at 813.558.0990.

Sincerely, James C. Mills, M.S.

Professional

Todd K. Kafka, P.G.

Senior Principal Hydrogeologist

Attachments Attachment A – Decommissioning Subcontractor Bids Attachment B – IDW Subcontractor Bids

LOE

ATTACHMENT A

DECOMMISSIONING SUBCONTRACTOR

BIDS

3007 N. 50th St. Tampa, Florida 33619 813-909-0040

November 11, 2021

James Mills, M.S.

Geosyntec Consultants, Inc.

Direct: 813.379.4389 Dennis O’Hanlan E:dohconstmgt@gmail.com

Re: Walker Plaza - System Decommissioning Plant City, Florida

Dear Mr. Mills:

In accordance with your request, Action Environmental (Action) is pleased to provide the following proposal for the decommissioning of the treatment system located at the Walker Plaza site in Plant City, Florida.

SCOPE OF SERVICES

• Remove approximately 700 feet of 2-inch diameter Schedule 40 polyvinyl chloride (PVC) conveyance piping in attic crawl space and on building exterior near SVE system compound;

• Remove all conveyance pipe metal hanging straps and screws from wooden trusses in attic crawl space;

• Remove all conveyance piping Unistrut on building exterior;

• Seal interior sheetrock firewall penetrations using sheetrock patch (2 walls to be patched);

• Seal exterior building penetrations by repairing stucco;

• Disconnect and remove underground, trenched electrical conduit (approximately 40 feet) from

SVE system to temporary power pole (overhead electrical power line disconnected from temporary power pole by Tampa Electric Company in June 2021);

• Dispose of all PVC pipe, metal hanging straps, Unistrut, electrical conduit, etc. from the decommissioning activities at proper off-Site landfill; and

• Properly prepare SVE system for long-term storage by sealing or capping all penetrations and closing all valves.

• SVE system compound including SVE system with exhaust stack and four anchors, geotextile fabric liner, and chain-link fencing with privacy slats;

• Temporary power pole;

• Metal flashing covering the former penetrations of the conveyance piping on the building exterior;

and

• Four interior vapor extraction wells (i.e., VEW01 to VEW04) and associated 2-inch PVC conveyance piping that runs vertically from each vapor extraction well through the drop tile ceiling and into the attic crawl space; the conveyance piping will be cut approximately 1-foot above the attic floor and sealed with a 2-inch diameter PVC end cap.

Cost: $4350 – Project is budgeted for 2 days with a 3-man crew. If project can be completed in one day then a $1200 credit will apply

JMills Highlight

3007 N. 50th St. Tampa, Florida 33619 813-909-0040

Assumptions

• No permit required

• Electrical will be disconnected from meter by other before mobilization.

• Only the electrical wires (conduits) are to be removed from the bottom of the meter disconnect to the compound and the underground conduit/pipe will remain. If electrical wires cannot be pulled by hand then they will be abandoned in place.

• Assumes attic crawl space is accessible and allows proper access with requiring additional equipment.

Respectfully Submitted, Action Environmental

Josh Pryor Branch Manager

3007 N. 50th St. Tampa, Florida 33619 813-909-0040

ACCEPTANCE: Proposal No.

Authorization

To execute this proposal, please sign and complete the authorization information below along with applicable payment instructions, and return one copy of the authorized proposal to our office.

Authorized By (please print) Signature

____________________________________ ____________________________________ Ti tle Firm

__________________________________________________________________________ Add ress

__________________________ _______ _________ ________________________ Cit y State Zip Code Telephone

____________________________________ ____________________________________ Da te Purchase Order No. / Project Tracking No. (If applicable)

Payment Instructions

If invoice payment is made be by a party other than the authorizing party above, please provide the following information for whom the invoices are to be billed:

____________________________________ ____________________________________ Fi rm Attention

____________________________________ ____________________________________ A ddress Title

__________________________ _______ _________ ________________________ Ci ty State Zip Code Telephone

____________________________________ Authorizing Party’s Relationship to Invoice Payment Party

5315 56th Commerce Park Blvd.

Tampa, FL 33610

Phone (813) 413-7760 eWe – Your Partner in Remediation Fax (813) 413-7761

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November 7, 2021

Mr. James Mills Geosyntec Consultants 12802 Tampa Oaks Blvd., Suite 151 Tampa, FL 33637 VIA Email

RE: Partial Decommissioning of the SVE System

509-617 NORTH MARYLAND AVENUE

Plant, FL

EWE-2304

Dear Mr. Mills:

Equipment with Experience (EWE) is pleased to submit this proposal to provide the equipment/services to complete the Partial Decommissioning of the SVE System at the above-referenced location. EWE proposes to provide the removal equipment and services as per information provided by Geosyntec Consultants. The cost to provide this equipment/service is detailed on the attached Proposal.

EWE will complete the following:

• Remove approximately 700 feet of 2-inch diameter Schedule 40 polyvinyl chloride (PVC) conveyance piping in attic crawl space and on building exterior near SVE system compound;

• Remove all conveyance pipe metal hanging straps and screws from wooden trusses in attic crawl space;

• Remove all conveyance piping Unistrut on building exterior;

• Seal interior sheetrock firewall penetrations using sheetrock patch (2 walls to be patched);

• Seal exterior building penetrations by repairing stucco;

• Disconnect and cap. (overhead electrical power line disconnected from temporary power pole by Tampa Electric Company in June 2021);

• Dispose of all PVC pipe, metal hanging straps, Unistrut, electrical conduit, etc. from the decommissioning activities at proper off-Site landfill; and

• Properly prepare SVE system for long-term storage by sealing or capping all penetrations and closing all valves.

• SVE system compound including SVE system with exhaust stack and four anchors, geotextile fabric liner, and chain-link fencing with privacy slats;

• Temporary power pole;

• Metal flashing covering the former penetrations of the conveyance piping on the building exterior; and

• Four interior vapor extraction wells (i.e., VEW01 to VEW04) and associated 2-inch

PVC conveyance piping that runs vertically from each vapor extraction well through

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the drop tile ceiling and into the attic crawl space; the conveyance piping will be cut approximately 1-foot above the attic floor and sealed with a 2-inch diameter PVC end cap.

If there are questions or comments concerning the above, please contact me at tomt@ewithe.net or call Tom Twitmyer at (813) 413-7760. If you would like to proceed with scheduling the above referenced work please sign and return one copy of the proposal to EWE. EWE thanks you for this opportunity to be of service; we look forward to working with you in the future.

Sincerely, Equipment with Experience, LLC

Thomas F. Twitmyer, P.G.

Attachments: Proposal, Standard Terms/Conditions mailto:tomt@ewithe.net

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PROPOSAL

Partial Decommissioning of the SVE System

Geosyntec Consultants

509-617 NORTH MARYLAND AVENUE

Plant, FL

Please initial and return to the attention of: Thomas Twitmyer – Tomt@ewithe.net

APPROVED ITEM DESCRIPTION RATES UNIT QUANTITY COST

Mini Excavator Operator and Equipment $1,500 /job 0 $0

Dumpster $550 /job 1 $550

Repair stucco and walls $450 /job 1 $450

Labor Labor Crew 2 man with tools $2,000 /day 2 $4,000

TOTAL ESTIMATED COSTS $5,000

NOTES:

Estimate valid for 90 days

DATE SERVICES NEEDED: PROPOSAL PREPARED: 11/7/2021

START TIME: ESTIMATED HOURS ON SITE:

PURCHASE ORDER NO.: EWE JOB NO.: EWE -2304

PAYMENT TERMS: Net 30 Days APPROVED COST

BILLING INFORMATION: Officer* Date *Signature Acts as Notice to Proceed at Contract Price

Payment Remitted to: ATTENTION: Mr. James Mills Equipment with Experience, LLC Geosyntec Consultants 5315 56th Commerce Park Blvd 12802 Tampa Oaks Blvd., Suite 151 Tampa, FL 33610 Tampa, FL 33637

PHONE: (813) 379-4389

FAX:

Email: JMills@Geosyntec.com

Thomas F. Twitmyer, EWE Geosyntec Consultants

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Standard Terms/Conditions

ACCEPTANCE: This proposal is an invitation for an offer and will become a binding contract when accepted.

LIMITATION OF PROPOSAL: The prices and terms quoted in this proposal are subject to acceptance by the Purchaser within a period of (30) calendar days from the date hereon.

EXCLUSIONS: This proposal is based solely and completely on specifications submitted to Equipment with Experience, Inc. (EWE) at the time of the writing of the proposal. General plans and specification not actually submitted shall not apply. This proposal, together with all annexed specifications, when accepted, shall be the complete agreement between the parties; and any alternations or unusual and undisclosed conditions or deviations from the above specifications involving extra costs shall be agreed upon in writing by both parties and shall become an additional charge over and above the proposal price set forth herein. Delays or impossibility of performance by EWE because of reasons beyond the control of EWE shall relieve us from all liability herein.

TERMS OF PAYMENT: Subject to the payment terms described in the General Conditions section in the proposal. We reserve the right to cancel the contract or cease work if payments thereon are not received when due. 1.5% per month shall be charged on all unpaid balances.

TAXES: The Purchaser shall pay any local, state or federal sales, excise or use tax imposed on the equipment in addition to the prices quoted.

WARRANTY LIMITATION: There are no warranties that extend beyond the warranties herein after expressed.

WARRANTIES: All work shall be done in a workmanlike manner according to standard practices. We agree to pass on to the Purchaser such warranties, if any, as may be extended by the manufacturer for material supplied. Labor for replacing defective materials shall not be provided by us unless it is specifically spelled out in the proposal. We shall not be responsible for materials damaged, lost or stolen after delivery, through no fault of ours, or for failure to deliver and perform because of reasons beyond our control.

EXCLUSIVE REMEDIES: Remedies are limited to the repair or replacement at FOB point of delivery. Consequential damages are excluded. In no event shall EWE be responsible for consequential damages of any such defective material or workmanship including, but not limited to, the Purchaser's loss of material or profits, increased expenses of operation, downtime or reconstruction of the work, and in no event shall EWE ' obligation under this warranty exceed the original contract price of the defective item.

DISCLAIMER: EWE will not be responsible for damage to equipment or materials through improper installation, storage, improper services, or through attempts to operate it in excess of its rated capacity or recommended use, intentional or otherwise, by parties other than EWE or its authorized representatives.

CONDITIONS OF SALE: Prices quoted are those now in effect. Seller reserves the right to bill at the prices in effect at the time of shipment if the proposal is not accepted in writing within thirty (30) days, unless a longer term of validity is in writing on the proposal.

LIMITATIONS OF LIABILITY

A. Neither Seller nor its suppliers of any tier will be liable to Purchaser, whether in contract, in tort (including negligence and strict liability), under any warranty or otherwise, for any special, indirect, incidental, or consequential loss or damage whatsoever, or for loss of or to the plant, loss of use of equipment or power system, cost of capital, loss of profits or revenue or the loss of use thereof, cost of environmental damage or clean-up, or claims of customers of Purchaser. The remedies set forth herein are exclusive, and the total cumulative liability of seller and it suppliers under any purchase order or any act or omission in connection therewith or related thereto, whether in contract, in tort (including negligence and strict liability), under any warranty, or otherwise, will be limited to the price of the contract.

B. The provisions of this Article shall survive termination, cancellation or expiration of the purchase order and shall apply, notwithstanding any other provisions of this Agreement or any related document thereto, to the fullest extent permitted by law. Prior to the transfer of any equipment or material furnished or for which work is furnished hereunder from the project site (except temporarily for repair work or permanently for disposal), or the transfer of any interest therein or in the plant, Purchaser shall obtain for Seller written assurances from the transferee of limitation of and protection against liability following the proposed transfer at least equivalent to that afforded seller and its suppliers under the purchase order.

Universal Environmental Solutions

P.O. Box 76105, Tampa, FL 33675 ~ Phone (813) 241-9206 ~ Fax (813) 241-9215

November 11,2021

Geosyntec Consultants Attention: Mr. James Mills 12802 Tampa Oaks Blvd.

Suite 151 Tampa, Florida 33637 Cell: 864-934-3420

RE: Decommissioning of SVE system at Walker Plaza in Plant City

Dear James:

As requested, Universal Environmental Solutions (UES) has prepared this proposal to provide labor, equipment, and materials to decommission the SVE system at Walker Plaza in Plant City. Please see break down of items below. Please feel free to call with any questions or concerns.

1. Labor and materials to make all necessary drywall repairs, stucco touch ups and touch up paint on exterior of building.

2. Remove all PVC piping in attic as well as underground for power feed to SVE.

3. Prep SVE system for long term storage.

Labor and Materials: $9460.00 Roll Off set up: $475.00 Disposal: $1350.00

Lump Sum Total: $11,285.00

Note: Exterior paint color to be provided by owner or Geosyntec.

Regards, Doug Nelson Field Services Manager

ATTACHMENT B

IDW SUBCONTRACTOR BIDS

1/7/22, 11:18 AM Clark Environmental Inc.: Quote Builder quote.clarkenvironmental.com/Quotes/ViewQuote?quoteId=19200 1/2

Quote Number: 19200

QUOTE

QUOTED TO: Todd Kafka

QUOTE DATE: 1/7/2022

COMPANY NAME: Geosyntec - 2022 QUOTED BY: Craig Burns

PHONE NUMBER:

Ext.

FAX NUMBER:

PROJECT REFERENCE: Drum Trans & Disposal for non-haz materials - Petro, Dry Cleaner & PFAS

CUSTOMER PO:

CONTACT EMAIL:

SITE ADDRESS: TBD

CLARK ENVIRONMENTAL, INC. IS PLEASED TO PROVIDE THE FOLLOWING

COST ESTIMATE FOR

THE SITE/ PROJECT LISTED ABOVE.

DESCRIPTION PRICE QTY. UNIT TOTAL

NON HAZ DRUM DISPOSAL**Soils, Solids, Sludges** $80.00 DRUM $0.00

NON HAZ DRUM DISPOSAL**Liquids, PPE, Pads/Rags** $60.00 DRUM $0.00

TRANSPORTATION: 0-100 miles from CLARK Mulberry FL <6 drums/site - surcharge of $50/site

$30.00 DRUM $0.00

TRANSPORTATION: 101-250 miles from CLARK Mulberry FL <6 drums/site - surcharge of $50/site

$40.00 DRUM $0.00

TRANSPORTATION: 251-400 miles from CLARK Mulberry FL <11 drums/site - surcharge of $200/site

$50.00 DRUM $0.00

Totes T&D is available. CLARK can also deliver new drums to each site if needed :$40 + tax

$0.00 . $0.00

HAZ Drums to be quoted case-by-case $0.00 . $0.00

TOTAL REQUIRED ITEMS $0.00

TOTAL OPTIONAL ITEMS $0.00

GRAND TOTAL $0.00

NOTES: Rates apply for FL. Labs and profiles must be approved prior to pick ups.

**Petro Sites required: TCLP 4 metals & TCLP Benzene**Dry Cleaner Sites require 8260 VOH's** Craig Burns

863.327.6289 - cburns@clarkenv.com

This quote will remain valid for 2022 and based on payment in net 30 days. Quote based on an accepted and approved profile. Please sign and return to accept this quotation and by signing agree to all terms and conditions.

Name (print) Title

JMills Highlight

JMills Highlight

JMills Highlight

JMills Text Box 1 drum = $60 + $30 + $50 = $140

1/7/22, 11:18 AM Clark Environmental Inc.: Quote Builder quote.clarkenvironmental.com/Quotes/ViewQuote?quoteId=19200 2/2

Signature Date

CLARK ENVIRONMENTAL, INC. * 755 Prairie Industrial Pkwy. * Mulberry, Florida 33860 Telephone: 863-425-4884 * Fax: 863-425-2854

WWW.ClarkEnvironmental.com

BID PROPOSAL FORM 2022

FDEP Drycleaner and Hazardous Waste Sites

Investigation Derived Waste (IDW) Transportation and Disposal

Contractor Company Name: HEPACO, LLC

Contact: Linda Basinger, 813-240-8020, lbasinger@hepaco.com

Region T&D of 1 Non-Hazardous IDW Drum (solid or liquid), Process Code STAB01

T&D of 1 Hazardous IDW Drum (solid or liquid), Process Code STAB02

Northwest $ 191.27 $ 367.36

Northeast $ 191.27 $ 367.36

Central $ 170.00 $ 346.10

Southwest $ 170.00 $ 346.10

Southeast* $ 170.00 $ 346.10

Assumptions and Clarifications:

• Unless otherwise specified within this proposal all terms and conditions will be governed by the most recent Master Services

Agreement between GEOSYNTEC and HEPACO, LLC. In the event that a current agreement is not in place all terms and conditions will be governed by HEPACO’s standard service agreement.

• Price is contingent upon profile approval and process code approval into HEPACO’s preferred disposal facilities.

• A minimum stop fee of $500.00 will apply to all shipments.

• The above rates are for less than truck load quantities (LTL). In the event that a higher volume of disposal is needed at any particular facility HEPACO will provide a case by case pricing scenario to help reduce overall cost.

• Above rates include a standard energy and insurance fee. In the event that market changes dramatically HEPACO reserves the right to increase or decrease these fees based on the appropriate energy index. In the event that this is required HEPACO will provide a

30 day written notice of the change.

* Excludes Monroe County (Case by case basis determined by volume of IDW)

• Bid costs above should be inclusive of transportation fees, fuel fees, environmental recovery fees, etc.

• No standby time should be included in the above bid costs.

• Assume that the drums are accessible.

• It is assumed that VOH totals results will be provided for profiling. If other analytical results are required, please indicated here:

Branch Locations Serving Florida:

Tampa

Gary Weiss, Project Manager

5371 Hartford St, Tampa gweiss@hepaco.com

813.550.7229 Mbl

Jacksonville

Andy Moats, Project Manager

1830 Clarkson St, Jacksonville amoats@hepaco.com

706.829.0145 Mbl

Panhandle

Chad Cobb, Project Manager

3490 Hurricane Bay Dr, Theodore AL ccobb@hepaco.com

251.293.9598 mailto:gweiss@hepaco.com mailto:amoats@hepaco.com mailto:ccobb@hepaco.com TKafka Highlight

JMills Text Box 1 drum = $170 + $500 = $670