CN-370000-HW685-DC046B.pdf

Funding Information:

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

Category Grant # Project # Year Amount

☐ Additional Funding Information attached on separate page.

Rev. 2025

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.

HW685

DC046B Completion September 25, 2026

This Task Assignment authorizes WSP to conduct groundwater sampling and a MAGS investigation at Oasis Laundry in accordance with the February 5, 2026 Scope of Work, Cost Estimate, and Bid Documentation.

Patrick McGrane 850-245-8899 Contractor Contractor

Contractor Contractor

Contractor Contractor

Contractor

WSP USA Inc.

WSP USA Inc.

Matt Crews 904-363-3430

ERIC_4720

1705 James L Redman Parkway, Plant City, Hillsborough County

Oasis Laundry and Professional Dry Cleaning Center

✔ $ 20,718.55 ✔ $ 225.00

$ 20,943.55

Scope of Work

Matthew Crews

Environmental Engineer

2/27/2026

Crews, Matt (USMC700671) Digitally signed by Crews, Matt (USMC700671) Date: 2026.02.27 09:07:37 -05'00'

Mubeen Darji

Mubeen Darji, P.E. Digitally signed by Mubeen Darji, P.E.

Date: 2026.02.23 12:30:21 -05'00'

N/A

Task Assignment Notification/Change Order Deliverables and Invoice Schedule Attachment

Contract Number:

Task Assignment #:

Deliverables:

Deliverable Deliverable Due Date

Invoice Schedule:

Requirements for Invoice Submittal Amount to be Invoiced

TOTAL COST

BWC TAFORM 25

HW685

DC046B

Subtask 3 - PFAS Related Costs & IDW Management

Subtasks 1 & 4 - Project Management; Reporting

Subtask 2 - Supplemental Assessment Activities 05/08/2026

06/05/2026

07/10/2026

Subtask 2 - Submittal and FDEP approval of email summary containing field documentation and certified laboratory reports for VOCs (Cost Reimbursement = $225.00)

Subtask 3 - Submittal and FDEP approval of email summary containing field documentation, certified laboratory reports for PFAS, and signed waste manifests

Subtasks 1 & 4 - Submittal and FDEP approval of the Supplemental Site Assessment Report Report

$ 11,374.29

$ 20,943.55

$ 3,281.41

$ 6,287.85

McGrane_P Rectangle

Memorandum

TO: Negotiation File

Oasis Laundry and Professional Dry Cleaning Center Plant City, Hillsborough County

ERIC_4720

FROM: Patrick McGrane, Project Manager

SUBJECT: Negotiation Summary Task Assignment DC046B (HW685)

DATE: February 17, 2026

This Task Assignment authorizes WSP USA Inc. (WSP) to conduct groundwater monitoring and resample the MAGS wells at the Oasis Laundry and Professional Dry Cleaning site.

The scope of work was agreed upon following technical review of the 2024 Site Assessment Report. The original MAG samples exceeded hold times, resulting in a qualifier. A retest and reanalysis were requested by the Department to validate the initial results.

The total cost for this project is $20,943.55 with 99 total labor hours. All work is to be completed in accordance with the February 5, 2026, Scope of Work, Cost Estimate, and Bid Documentation.

WSP may invoice according to the included schedule.

FDEP COST ESTIMATEContractor: WSP USA, Inc.

Date: 2/5/2026

Task #: DC046B SubTask 1 Project Management SubTask 6 Site: SubTask 2 MAGS Tests & Annual GW Monitoring Activities SubTask 7

Activity/Phase: SubTask 3 PFAS Related Costs and IDW T&D SubTask 8 Project Manager: Patrick McGrane SubTask 4 Reporting SubTask 9

SubTask 5 SubTask 10

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

$80.31 Project Manager (GS) 8 8.2 $0.00 Program Leader - X-14 0 0 0 0 0 0 0 0 0 0

$80.31 Practice Leader - X-13 (GS) 16 6 8 2 0 0 0 0 0 0 $0.00 Senior Consultant - X-12 0 0 0 0 0 0 0 0 0 0

$57.55 Senior Sci/Eng - X-11 (RW) 16 0 0 16 0 0 0 0 0 0 $0.00 Senior Project Sci/Eng - P-10 0 0 0 0 0 0 0 0 0 0

$47.58 Project Sci/Eng - P-10 (AS) 22 19 3 0 0 0 0 0 0 0 $48.08 Project Sci/Eng - X-11 (DM) 29 26 3 0 0 0 0 0 0 0

$0.00 Staff Sci/Eng - P-8 0 0 0 0 0 0 0 0 0 0 $0.00 Staff Sci/Eng - P-8 0 0 0 0 0 0 0 0 0 0

$38.32 Staff Sci/Eng - P-8 (AS) 2 0 0 2 0 0 0 0 0 0 $0.00 Sci/Eng/Admin - P-7 0 0 0 0 0 0 0 0 0 0

$56.33 Senior Sci/Eng - X-11 (BL) 6 0 1 5 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0 $0.00 0 0 0 0 0 0 0 0 0 0

Total Hours 99 8.2 51 15 25 0 0 0 0 0 0

Direct Labor $5,719.45 $657.99 $2,635.96 $985.79 $1,439.71 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Overhead 172.50% $9,866.05 $1,135.03 $4,547.03 $1,700.49 $2,483.50 $0.00 $0.00 $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 $15,585.50 $1,793.02 $7,182.99 $2,686.28 $3,923.21 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Oasis Laundromat & Dry Cleaners Supplemental Site Assessment

REV: 02/03 CEF GOLDER Page 1

FDEP COST ESTIMATEContractor: WSP USA, Inc.

Date: 2/5/2026

Task #: DC046B SubTask 1 Project Management SubTask 6 Site: SubTask 2 MAGS Tests & Annual GW Monitoring Activities SubTask 7

Activity/Phase: SubTask 3 PFAS Related Costs and IDW T&D SubTask 8 Project Manager: Patrick McGrane SubTask 4 Reporting SubTask 9

SubTask 5 SubTask 10

Totals 1 2 3 4 5 6 7 8 9 10

Oasis Laundromat & Dry Cleaners Supplemental Site Assessment

Travel Vehicle Rental $480.00 $480.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 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 Meals $72.00 $72.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Hotel $225.00 $225.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Travel $777.00 $777.00 $0.00 $0.00 $0.00 $0.00 $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 $195.00 $0.00 $195.00 $0.00 $0.00 $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 Utility Location $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 $195.00 $0.00 $195.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Handling Fee $19.50 $0.00 $19.50 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Subcontractor Cost $214.50 $0.00 $214.50 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Laboratory Analytical Costs $1,494.00 $1,494.00 $0.00 $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 $260.00 $260.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Laboratory $1,754.00 $1,754.00 $0.00 $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 $80.00 $80.00 $0.00 $0.00 $0.00 $0.00 $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) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (IDW related) $100.00 $0.00 $100.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (Other) $874.00 $862.00 $12.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Field Expenses $1,054.00 $942.00 $112.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subtotal $19,385.00 $1,793.02 $10,655.99 $3,012.78 $3,923.21 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Completion Fee $1,558.55 $179.30 $718.30 $268.63 $392.32 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Total Estimated Cost $20,943.55 $1,972.32 $11,374.29 $3,281.41 $4,315.53 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

REV: 02/03 CEF GOLDER Page 2

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Oasis Laundromat & Dry Cleaners SUBTASK 2: MAGS Tests & Annual GW Monitoring Activities

DATE: 2/5/2026

LABOR CATEGORY

STAFF-TITLE HOURS

Practice Leader (G. Schaefer) 6

Project Sci/Eng (D. McDaniels) 26

Project Sci/Eng (A. Smyth) 19

TOTAL LABOR 51

VEHICLE TYPE RATE UNIT USAGE

Truck (DM) $120.00 Per Day 2 $240.00 Truck (AS) $120.00 Per Day 2 $240.00

TOTAL VEHICLE $480.00

MEALS STAFF RATE UNIT USAGE

Per Diem DM $36.00 Per Day 2 $72.00

TOTAL MEALS $72.00

HOTEL STAFF RATE UNIT USAGE

Hotel DM $225.00 Per Day 1 $225.00

TOTAL HOTEL $225.00

SUBCONTRACTOR COSTS

NAME PURPOSE RATE COSTING UNIT USAGE TOTALS

$0.00

TOTAL $0.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC

Chlorinated VOCs - EPA Method 8260B

Total VOHs EPA Method 8260B $73.00 8 $584.00 Total VOCs EPA Method 8021 - IDW $110.00 1 $110.00 Sample Shipping Large $150.00 1 $150.00

MAGS

VOC Soil Vapor TO-15 Vapor $200.00 4 $800.00 Sample Shipping Small $110.00 1 $110.00

TOTAL LAB $1,754.00

EQUIPMENT ITEM RATE COSTING UNIT USAGE TOTALS

Miscellaneous Expendables $40.00 Per Day 2 $80.00 Shallow Groundwater Sampling Kit $290.00 Per Day 1 $290.00 Tubing, Poly HDPE $0.30 Per Foot 160 $48.00 Tubing, Silicon 3/16 x 3/8 $3.00 Per Foot 8 $24.00 MAGS Investigation Kit $500.00 Per Day 1 $500.00 Summa Canister each

TOTAL EQUIPMENT $942.00

*PROVIDE TIME REQUIRED FOR EACH PERSON

WORK DESCRIPTION

Verification of property ownership for onsite sampling locations (1 hour). Update Health and Safety Plan. Data review, engineering calculations, and technical correspondence with DEP during MAGS as needed (3 hours per day x 1 day = 3 hours). Prepare and submit an email summary with field documentation and certified laboratory report as an interim deliverable (2 hours).

Round trip travel (8 hours). MAGS and GW sampling field event preparation (3 hours). Conduct MAGs tests and sampling at four MAGS wells analyzed for TO-15, including set-up and breakdown of equipment and step-test (6 hours), measure water levels, instrument calibration, measure field parameters, collect samples from eight shallow zone monitoring wells and analyze for chlorinated VOCs (8 hours). Sample and stage IDW (1 hour).

Round trip travel (2 hours per day x 2 days = 4 hours). Conduct MAGs tests and sampling at four MAGS wells and analyze for TO-15, including set-up and breakdown of equipment and step-test (6 hours), measure water levels, instrument calibration, measure field parameters, collect samples from eight shallow zone monitoring wells and analyze for chlorinated VOCs (8 hours). Sample and stage IDW (1 hour).

FINAL --7/24/96

SUBTASK 3: PFAS Related Costs and IDW T&D

DATE: 2/5/2026

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Senior Consultant (G. Schaefer) 8

Project Sci/Eng (D. McDaniels) 3

Project Sci/Eng (A. Smyth) 3

Senior Sci/Eng (B. Lucero) 1

TOTAL LABOR 15

VEHICLE TYPE RATE UNIT USAGE

TOTAL VEHICLE $0.00

MEALS STAFF RATE UNIT USAGE

TOTAL MEALS $0.00

HOTEL STAFF RATE UNIT USAGE

TOTAL HOTEL $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE USAGE

Erwin T&D - Non-Haz PFAS Water $195.00 Per Drum 1 $195.00

TOTAL $195.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC

DEP Central Lab

PFAS - LC001-3 $0.00 5 1 $0.00

IDW - LC001-3 $0.00 1 $0.00

Sample Shipping Large $150.00 0 $0.00

TOTAL LAB $0.00

EQUIPMENT ITEM RATE COSTING UNIT USAGE TOTALS

Tubing, Poly HDPE $0.30 Per Foot 10 $3.00 Tubing, Silicon 3/16 x 3/8 $3.00 Per Foot 3 $9.00 Drum, 55-gallon $100.00 Per Drum 1 $100.00

TOTAL EQUIPMENT $112.00

Collect samples for PFAS analysis in conjunction with the CVOC samples from five wells;

collect equipment blank and IDW for PFAS analysis (1 hour). Prepare data tables with PFAS analytical results (2 hours).

Complete forms to arrange for PFAS sample bottle order delivery and shipment from DEP Central Laboratory (1 hour). Characterize IDW and prepare waste profile for transportation and disposal of IDW (3 hours). Prepare and submit email summary with field documentation and certified laboratory reports (2 hour). Prepare PFAS section for the Annual GW Monitoring report (2 hours).

Collect samples for PFAS analysis in conjunction with the CVOC samples from five wells;

collect equipment blank and IDW for PFAS analysis (1 hour). Package and deliver PFAS samples to shipping point for DEP Central Laboratory (2 hours).

CADD Figure with PFAS data in the Annual GW Monitoring Report.

SUBTASK 4: Reporting

DATE: 2/5/2026

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Senior Consultant (G. Schaefer) 2

Senior Sci/Eng (R. White) 16

Senior Sci/Eng (B. Lucero) 5

Staff Sci/Eng (A. Strayer) 2

TOTAL LABOR 25

Reporting: Document production, create pdf for OCULUS.

Develop conclusions and recommendations and prepare final Supplemental Site Assessment Report.

Data entry, prepare tables and figures, and draft SSAR

Prepare potentiometric maps and VOC figures for SSAR

WSP USA Inc.

9428 Baymeadows Road, Suite 400, Jacksonville, Florida 32256 USA

T: +1 904 363-3430 F: +1 904 363-3445 wsp.com

February 5, 2026 Proposal No. 2025US483737

Mr. Patrick McGrane

Florida Department of Environmental Protection

Division of Waste Management

Waste Site Cleanup Section

2600 Blair Stone Road, MS 4520

Tallahassee, FL 32399-2400

RE: COST PROPOSAL FOR SUPPLEMENTAL SITE ASSESSMENT

AND ANNUAL GROUNDWATER MONITORING

OASIS LAUNDROMAT & PROFESSIONAL DRY CLEANERS

1705 JAMES L. REDMAN PARKWAY

PLANT CITY, HILLSBOROUGH COUNTY, FLORIDA

FACILITY IDENTIFICATION NUMBER: ERIC_4720

Dear Mr. McGrane:

WSP USA Inc. (WSP) is pleased to provide the Florida Department of Environmental Protection (DEP) with this cost proposal to complete supplemental site assessment and annual groundwater monitoring activities at the above-referenced site. This proposal is being submitted under Contract Number HW685 and includes a description of the proposed scope of services, level of effort sheets for each subtask, and a cost estimate form that summarizes the costs of the proposed services. The proposed scope of services is described below.

SUBTASK 1 – PROJECT MANAGEMENT

To facilitate project quality and satisfactory completion of the proposed scope of work, all aspects of this project will be overseen by an experienced project manager. The project manager will be responsible for the schedule, budget, invoicing, project activities, and communications with the DEP and the field team.

Project management will include coordination of field activities; resource allocation to confirm the work is conducted by qualified professionals in accordance with the project schedule; cost control and tracking of the budget status; and submittal of project invoices in accordance with DEP Waste Site Cleanup Section requirements. The project manager will oversee the work so that it is conducted in a manner that is consistent with the requirements of the DEP-approved task assignment.

SUBTASK 2 – SUPPLEMENTAL SITE ASSESSMENT ACTIVITIES

Following authorization to proceed, WSP will use the Hillsborough County Property Appraiser’s website to verify that the current property owner and the offsite property owners have an executed Permission to Enter

Property agreement with the DEP. WSP will then coordinate with the real property owner and tenant for

Mr. Patrick McGrane Proposal No. 2025US483737

Florida Department of Environmental Protection February 5, 2026 access to complete the scope of work. WSP will obtain the applicable local, county, and State-required permits prior to implementing the proposed scope of work.

Historical MAGS Investigation and Results

Between November 30 and December 5, 2024, WSP installed four MAGS wells (MAGS-1 through MAGS-4) and eight vacuum monitoring points (VMP-1 through VMP-8) using a stainless-steel hand auger. Soil vapor samples were collected from each of the four MAGS wells and analyzed for volatile organic compounds

(VOCs) using EPA Method TO-15. The MAGS well locations are shown on Figure 4.

WSP performed a step-increase vacuum test at location MAGS-1, which consisted of a low

(approximately 6 inches H2O), medium (approximately 20 inches H2O), and high vacuum setting

(approximately 57 inches H2O). The optimum vacuum setting appeared to be at the high vacuum setting, based on the calculated ROIs and influent soil vapor flow rate results. However, water entrainment was observed in MAGS-3 and MAGS-4 at the high range and was mitigated when the vacuum was reduced to be closer to the medium range (35 to 40 inches H2O).

The calculated average flow rate for the MAGS wells ranged from approximately 37.7 standard cubic feet per second (scfm) in MAGS-1 to 22.4 scfm in MAGS-2. The calculated ROIs ranged from 16 to 20 feet, as defined by a minimum induced vacuum of 0.1 inches of water. WSP calculated the average soil permeability at each vacuum setting. The average soil permeability at the apparent optimum vacuum setting (between medium and high settings) ranged from 12.93 to 17.27 Darcys using data collected during the MAGS study.

The soil permeability is consistent with the lithology observed in the vadose zone soils (sand) and is consistent with values desired for effective soil vapor extraction (SVE).

PCE was detected in each MAGS well sample, ranging in concentration from 1.2 milligrams per cubic meter

(mg/m3) at MAGS-4 to 14 mg/m3 at MAGS-2. The highest concentrations were located underneath the floor slab where the former drycleaning machine (MAGS-2) was located and outside the rear door (MAGS-3).

TCE and some petroleum constituents were reported in the soil vapor samples at very low concentrations between the laboratory method detection limit (MDL) and the practical quantitation limit. The soil vapor results are summarized in Table 2 and shown on Figure 4. The soil vapor samples were received by the laboratory within hold-times; however, when the laboratory shipped the samples to a different laboratory location for analysis, the samples were received out of hold-time by that lab. WSP instructed the lab to analyze the samples. Even though the samples were analyzed out of hold-time, the data provided useful information concerning current soil quality conditions by detecting PCE at each MAGS well location. Due to the samples being analyzed out of hold time, DEP requested that WSP conduct another round of MAGS testing and analysis.

Proposed MAGS Investigation

WSP will conduct MAGS testing at the four MAGS wells (MAGS-1 through MAGS-4) that were installed during the initial assessment activities in November 2024. WSP will mobilize our trailer-mounted SVE system to complete the MAGS investigation. The MAGS investigation results will be used to evaluate the presence and locations of potential source areas and to identify locations and analyses for additional discrete soil sampling. The results may also be used for a full-scale soil vapor extraction system design, if warranted. The MAGS investigation will involve fitting a regenerative blower to each MAGS well to extract soil vapor from vadose zone soil.

WSP will analyze the extracted soil vapor using an OVA-PID and/or Draeger colorimetric detector tubes. A portable generator will supply power to the blower. The connection between the MAGS wellhead and blower will be made using 2-inch diameter vacuum-rated flexible PVC tubing and Schedule 40 PVC pipe. Vacuum gauges, a flowmeter, filter, and sample ports will be installed in-line.

WSP will test each MAGS well for an estimated 30 minutes to one hour. At one of the MAGS locations, WSP will perform step-increase vacuum tests, which will consist of a low, medium, and high vacuum settings. The remaining tests will be performed at the optimum vacuum determined in the step-test. WSP will measure subsurface vacuum pressure at varying distances from the primary extraction points using nearby MAGS wells and monitoring wells, provided the monitoring well screen is sufficiently exposed, to evaluate subsurface flow characteristics. This data will be used to estimate the effective field ROI, soil permeability, hydraulic conductivity, pore volume, and purge time. The project engineer will perform calculations during the field event to confirm the time required to evaluate one pore volume of soil vapor based on the measured ROI and actual vapor flow rate. Based on these calculations, the time that vapor is extracted at each MAGS well will be adjusted accordingly. An OVA-PID and/or colorimetric detector tubes will be used to monitor the soil vapor extracted from the MAGS sampling point.

Near the end of each MAGS extraction test, a soil vapor influent sample (pre-dilution) will be collected to provide a general assessment of the types and concentrations of remaining chlorinated solvents in soil.

The air samples will be collected in Summa canisters and submitted to a fixed-based laboratory for VOC analysis using EPA Method TO-15.

Annual Groundwater Monitoring

During the initial assessment activities conducted in March 2024, WSP installed eight shallow monitoring wells (OMW-1 through OMW-8). WSP has completed only one groundwater sampling event at the Site on

March 26, 2024. WSP proposes collecting groundwater samples from the eight existing monitoring wells for the analyses identified in the table below. WSP will submit one set of samples from each well to a fixed-base laboratory for analysis of chlorinated VOCs using EPA Method 8260B, and an IDW sample for analysis for full list VOCs using EPA Method 8260D. WSP will submit a second set of samples from five select wells plus the equipment blank to the DEP Central Laboratory in Tallahassee, Florida for analysis of per- and polyfluoroalkyl substances (PFAS) using DEP SOP: LC001-3 (or similar). The attached figures show the well locations and recent chlorinated VOC results. Prior to groundwater sampling, the depth-to-groundwater will be measured at each of the eight well locations using an electronic water level indicator to determine groundwater elevations and flow direction. During the sampling event, the locks and well caps will be inspected for damage or degradation and repaired or replaced, as necessary.

Sample ID Chlorinated VOCs (EPA Method 8260B)

PFAS

(DEP SOP: LC001-3 or Similar)

OMW-1 X X

OMW-2 X ---

OMW-3 X X

OMW-4 X X

OMW-5 X X

OMW-6 X ---

OMW-7 X ---

OMW-8 X X

Equipment Blank --- X

Investigative Derived Waste (IDW) Total VOCs X

Groundwater sampling activities will be completed in accordance with DEP Standard Operating Procedures

(SOPs) for Field Activities (DEP SOP-001/01), dated January 2017 (effective April 16, 2018). Prior to collecting the groundwater sample, each well will be purged using low-flow sampling methods and field parameters, including temperature, pH, specific conductance, dissolved oxygen, turbidity, and oxidation-reduction potential will be monitored. Purge volumes and field parameters will be recorded on field data sheets, and the field monitoring equipment will be calibrated in accordance with the manufacturer’s recommended procedures.

The groundwater samples will be placed in laboratory-supplied containers, labeled with a unique identification number attached to the outside of the sample container, preserved on ice in a laboratory-provided cooler at a maximum temperature of 4° Celsius, and delivered to a DOH and NELAP certified fixed-base laboratory along with the completed chain-of-custody documentation.

Interim Deliverable

Upon completion of Subtask 2, an email deliverable will be submitted for the chlorinated VOC samples and will include copies of the field data sheets, equipment calibration forms, field notes, laboratory analytical report, and non-hazardous waste manifest.

SUBTASK 3 – PFAS-RELATED COSTS and IDW TRANSPORTATION & DISPOSAL

WSP will include costs associated with initial PFAS monitoring activities in this subtask. According to the most recent FDOH Potable Well Survey (12/16/24), there are no potable supply wells with ¼-mile of the site. Therefore, in conjunction with the sampling efforts conducted in Subtask 2 for chlorinated VOC analysis, groundwater samples will be collected for PFAS analysis from the five monitoring wells (OMW-1, OMW-3, OMW-4, OMW-5, and OMW-8) that were previously analyzed for PFAS. These activities include completing bottle order requests with the DEP Central Laboratory; waste characterization and waste profiling; packaging and shipping PFAS samples to the DEP Central Laboratory; labor involved in sampling wells associated with PFAS analysis only; and investigation derived waste (IDW) transportation and disposal.

Quality Assurance/Quality Control

WSP will collect one equipment blank sample during the groundwater sampling event. The equipment blank will be collected by pumping PFAS-free water through silicon and HDPE tubing and into laboratory-supplied containers. The equipment blank will be analyzed for PFAS using DEP SOP: LC001-3.-supplied containers.

The equipment blank will be analyzed for PFAS using DEP SOP: LC001-3

IDW Transportation and Disposal

WSP will containerize the IDW purge water in a 55-gallon drum. WSP will collect a composite waste characterization sample from the drum for analysis of total VOCs using EPA Method 8260 and PFAS. The drum will be temporarily staged onsite, pending waste characterization. For cost estimating purposes, WSP has assumed that the IDW can be transported and disposed of as non-hazardous waste at an approved facility. The IDW transportation and disposal subcontractor will provide WSP with a non-hazardous waste manifest upon delivery to the disposal facility. WSP estimates a total of one drum of IDW purge water will be generated during the field activities. Given that PFAS groundwater samples have not been collected at this site, disposal rates will be reflective of PFAS-impacted media.

Interim Deliverable

Upon completion of Subtask 3, an email deliverable will be submitted for the PFAS samples and include copies of the field data sheets, equipment calibration forms, field notes, laboratory analytical report, and non-hazardous waste manifest, and updated data tables and figures.

SUBTASK 4 – REPORTING

WSP will prepare a Supplemental Site Assessment Report that will include a description of the field activities and sampling procedures, evaluation of the analytical results; comparison of current to historical data;

tabulated summary of the current and historical analytical data; site maps showing the MAGS air sample analytical results, the groundwater analytical results; water level elevation information in tables and figures;

laboratory analytical data; and conclusions and recommendations.

HEALTH AND SAFETY

WSP will update the existing site-specific Health and Safety Plan for the fieldwork. The work will be completed in accordance with WSP’s safety policies and procedures. At a minimum, WSP will wear safety glasses, high-visibility safety vests, and steel-toed boots. A safety job briefing will be conducted prior to the start of work activities and anytime the scope of work or site conditions change.

COST AND SCHEDULE

The estimated cost to complete the proposed scope of work is $20,943.55. WSP anticipates the MAGS testing and sampling, and the groundwater sampling activities can take place in March/April 2026, pending

DEP approval of this proposal. The level of effort sheets and cost estimate form are included in

Attachment A. Subcontractor quotes are included in Attachment B. The following table summarizes the proposed costs and deliverable schedule.

Task Proposed

Cost Proposed Schedule/Deliverables

Subtask 1 – Project Management $1,972.32 June 30, 2026

Subtask 2 – Site Assessment Activities $11,374.29 April 30, 2026 (Field documentation, GW sample logs, and laboratory analytical reports via email deliverable)

Subtask 3 – PFAS Related Costs and IDW Transportation and Disposal

$3,281.41 May 29, 2026 (Field documentation, laboratory analytical report and non-hazardous waste manifest via email deliverable)

Subtask 4 – Reporting $4,315.53 June 30, 2026 (Supplemental Site Assessment Report)

Total/Completion Date $20,943.55 August 28, 2026

WSP appreciates the opportunity to provide services to the DEP. Should you require additional information or clarifications, please contact us at (904) 363-3430.

Sincerely, WSP USA Inc.

Ron White, PG Logan Chappell, PE

Lead Consulting Geologist/Project Manager Senior Consultant, Environmental Engineer

RW/LC/as

Attachments: Figure 1 – PFAS Analytical Results Figure 4 – Groundwater Analytical Data

Attachment A – Level of Effort Sheets and Cost Estimate Form Attachment B – Subcontractor Quotes https://wsponlinenam.sharepoint.com/sites/US-314044524720DC046AOa/Shared Documents/1 Proposal and Project Management/Oasis Laudromat Professional DC SSA WP 2.5.26 - Final.docx

MAGS-1

VMP-3

VMP-2

VMP-6

VMP-7

VMP-8

MAGS-3

MAGS-4

MAGS-2

VMP-5

VMP-4

VMP-1

N

MAGS-1

LEGEND

FIGURE:

DATECHECKED

REVISIONSNO. DATE

DESIGNED DRAWN

WSP USA, Inc. 4

MAGS SOIL VAPOR ANALYTICAL RESULTS

OASIS LAUNDROMAT AND DRY CLEANING

SITE ASSESSMENT REPORT

1705-A JAMES L. REDMAN PARKWAY

PLANT CTY, HILLSBOROUGH COUNTY, FLORIDA

FLORIDA DEPARTMENT OF

ENVIRONMENTAL PROTECTION

RW GB

0 Jun-24 Initial Submittal

VMP-1

AutoCAD SHX Text Dryers

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SCALE: 1 INCH =

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AutoCAD SHX Text PLOTTED: July 11, 2024 - 10:50 AM, BY: Burton, GeorgeJuly 11, 2024 - 10:50 AM, BY: Burton, George - 10:50 AM, BY: Burton, George10:50 AM, BY: Burton, George, BY: Burton, GeorgeBurton, George

AutoCAD SHX Text P:\CAD\HW688\DRYCLEAN\Oasis\SAR\2024-06\FIG-4.dwg

AutoCAD SHX Text Modified Active Gas Sampling

AutoCAD SHX Text MAGS well location and designation

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MAGS

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PCE

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12-23 MAGS-1 2.0 Q

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DATE ID PCE

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12-23 MAGS-2 14.0 Q

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DATE ID PCE

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DATE ID PCE

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12-23 MAGS-4 1.2 Q

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DATE ID PCE

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AutoCAD SHX Text Vacuum monitoring point location and designation

AutoCAD SHX Text Sample held beyond the accepted holding time

AutoCAD SHX Text Q

AutoCAD SHX Text NOTE: 1. Soil vapor analytical results reported in milligrams per Soil vapor analytical results reported in milligrams per cubic meter.

PZ-3

PZ-2

PZ-1

PZ-4

DPT-13

DPT-2

DPT-4

DPT-1

DPT-3

DPT-11

DPT-10

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FIGURE:

DATECHECKED

REVISIONSNO. DATE

DESIGNED DRAWN

WSP USA, Inc. 7

MONITORING WELL GROUNDWATER ANALYTICAL RESULTS (MARCH 26, 2024)

OASIS LAUNDROMAT AND DRY CLEANING

SITE ASSESSMENT REPORT

1705-A JAMES L. REDMAN PARKWAY

PLANT CTY, HILLSBOROUGH COUNTY, FLORIDA

FLORIDA DEPARTMENT OF

ENVIRONMENTAL PROTECTION

RW GB

0 Jun-24 Initial Submittal

DPT-1

7.8

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AutoCAD SHX Text Restroom

AutoCAD SHX Text Storage

AutoCAD SHX Text Sewer manhole

AutoCAD SHX Text Cleanout

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AutoCAD SHX Text Storage

AutoCAD SHX Text Asphalt

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AutoCAD SHX Text Fire Dept. Connection

AutoCAD SHX Text Propane tank

AutoCAD SHX Text Stormwater drain

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AutoCAD SHX Text PLOTTED: July 11, 2024 - 10:44 AM, BY: Burton, GeorgeJuly 11, 2024 - 10:44 AM, BY: Burton, George - 10:44 AM, BY: Burton, George10:44 AM, BY: Burton, George, BY: Burton, GeorgeBurton, George

AutoCAD SHX Text P:\CAD\HW688\DRYCLEAN\Oasis\SAR\2024-06\FIG-7.dwg

AutoCAD SHX Text Piezometer location and designation

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03-24 OMW-3 5-15 NE NE

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DATE ID DEPTH CVOC BTEX

AutoCAD SHX Text Chlorinated Volatile Organic Compound

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CVOC

AutoCAD SHX Text Benzene, Toluene, Ethylbenzene and Total Xylenes

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BTEX

AutoCAD SHX Text No exceedance of GCTLs

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NE

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GCTL

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03-24 OMW-4 5-15 NE NE

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03-24 OMW-5 5-15 NE NE

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03-24 OMW-6 5-15 NE NE

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03-24 OMW-7 5-15 NE NE

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03-24 OMW-2 5-15 3.4 NE

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AutoCAD SHX Text Tetrachloroethylene

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AutoCAD SHX Text Approximate extent of CVOC plume

USRW720051

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US Ecology* HEPACO T&D Non Haz Soil - VOCs per drum 0 $125.00 $0.00 T&D Non Haz Mud/water - VOCs per drum 0 $125.00 $0.00 False Mobilization (no drum found) 0 $85.00 $0.00 PFAS Profile Fee (1 per site) 0 $350.00 $0.00 T&D Non Haz Soil - PFAS/PFOS per drum 0 $195.00 $0.00 T&D Non Haz Mud/water -PFAS/PFOS per drum 1 $195.00 $195.00 Disposal Non Haz Soil - VOCs per drum 0 $150.00 $0.00 Disposal Non Haz Mud/water - VOCs per drum 0 $150.00 $0.00 PFAS Profile Fee (1 per site) 1 $95.00 $95.00 Disposal Non Haz Soil - PFAS/PFOS 0 $650.00 $0.00 Disposal Non Haz Mud/water -PFAS/PFOS 1 $650.00 $650.00 Approval Fee (per site) 1 $750.00 $750.00 Non Haz Solification Waste Profile fee 0 $50.00 $0.00 Non Haz Solids Disposal (per drum) 0 $185.00 $0.00 Non Haz Sludge Disposal 0 $185.00 $0.00 PFAS Waste 55 gal drum emelle AL 1 $810.00 $810.00 Truck with lift gate and driver 4 $145.00 $580.00 non haz liquids disposal (per drum) 0 $141.75 $0.00 55 gallon reconditioned drum 0 $134.63 $0.00 LTL fees (less than 15 drums 1 $150.00 $150.00 Energy security recovery fee 15% 1 $231.00 $231.00

Total Cost $195.00 $1,495.00 * $1,771.00

Notes* Transportation costs will be calculated based on pickups at various sites and waste stream volume

IDW SUBCONTRACTOR COST ESTIMATES FOR PFAS MATERIAL

Erwin

Summary of IDW Subcontractors Costs 2023_6_16 PFAS no profile Page 1 of 1

408 Ditmar Street

Pensacola, FL 32503

ErwinRemediation@Gmail.com - P.O. Box 884 Gulf Breeze, FL 32562

(850) 292-6511

To: Mr. Ralph Mongillo

WSP

9428 Baymeadows Road, Suite 400 Jacksonville, FL 32256

June 16, 2023

Re: Non-Hazardous Disposal of PFOS/PFAS Impacted Materials

Mr. Mongillo:

The price for the transportation and disposal (T&D) of non-hazardous soil, mud, and water is listed below:

For Non-Hazardous Chlorinated Solvent Impacted Materials:

Description Rate Unit

T&D - Non-Haz Chlorinated Solvents Impacted Soil $ 125.00 Per Drum

T&D - Non-Haz Chlorinated Solvents Impacted Mud/Water $ 125.00 Per Drum

T&D - Non-Haz Chlorinated Solvents Impacted Water $ 95.00 Per Bucket

For Non-Hazardous PFAS/PFOS Impacted Materials:

Description Rate Unit

Profile Fee (Charged once per site) $ 350.00 Per Site

T&D - Non-Haz PFOS/PFAS Impacted Water (5-gallon bucket) $ 95.00 Per Bucket

T&D - Non-Haz PFOS/PFAS Impacted Soil $ 195.00 Per Drum

T&D - Non-Haz PFOS/PFAS Impacted Mud/Water $ 195.00 Per Drum

Please ensure that all drum lids are properly secured and that drums are on a level surface like the surrounding area (i.e., not on a pallet, etc.). A single False Mobilization fee will apply if our driver is not able to locate a drum on site or if we are unable to access the property due to a locked gate, etc. This quote is valid for 90 days.

Respectfully, Robert Donado Erwin Remediation, Inc.

Email: robert@erwinremediation.com