CN-370000-HW687-DC049A.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. 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.

HW687

DC049A Completion November 27, 2026

This TA authorizes quarterly Groundwater Monitoring Events and Reporting at the Stroud Cleaners site.

Gabriel Sostre 850-245-8749 Contractor Terracon Consultants, Inc. Contractor

Contractor Shawn Ouellette Contractor 561-494-7052

ERIC_5529

115 East Plymouth Avenue, Deland, Volusia County

Stroud Cleaners

Contractor Contractor

✔ $ 22,678.67

$ 22,678.67

Scope of Work

Terracon Consultants, Inc.

Contractor Shawn Ouellette

Group Manager

Ouellette, Shawn Digitally signed by Ouellette, Shawn Date: 2025.06.04 11:55:07 -04'00'

Mubeen Darji

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

Date: 2025.06.04 09:19:39 -04'00'

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 01/18

HW687

DC049A

Subtask 3: Quarter 2 sampling event and email summary report.

Subtask 4: Quarter 3 sampling event and email summary report.

Subtask 5: Quarter 4 sampling event and email summary report.

Subtasks 1 & 6: Project Management; IDW disposal.

Subtask 2: Quarter 1 sampling event and email summary report.

07/04/2025

10/31/2025

02/27/2026

06/26/2026

10/30/2026

Subtask 2: FDEP approval of quarter 1 email summary report including exhibits.

Subtask 3: FDEP approval of quarter 2 email summary report including exhibits.

Subtask 4: FDEP approval of quarter 3 email summary report including exhibits.

Subtask 5: FDEP approval of quarter 4 email summary report including exhibits.

Subtasks 1 & 6: FDEP approval of IDW Waste Manifests.

$ 4,126.69

$ 4,323.07

$ 4,323.07

$ 7,017.48

$ 2,888.36

$ 22,678.67

FLORIDA DEPARTMENT OF

Environmental Protection

Bob Martinez Center 2600 Blair Stone Road

Tallahassee, FL 32399-2400

Ron DeSantis Governor

Secretary

Memorandum

TO:

FROM:

Negotiation File

ERIC

, Project Manager

SUBJECT: Negotiation Summary Task Assignment (HW687)

DATE: ,

FDEP COST ESTIMATE

Contractor: Terracon HW687

Date: 4/24/2025 Task #: DC049A SubTask 1 Project Management SubTask 6 IDW Disposal

Site: SubTask 2 Period 1 Sampling/Email Summary Report SubTask 7 vity/Phase: Periodic Groundwater Monitoring SubTask 3 2nd Sampling Event/Email Summary Report SubTask 8

Manager: Gabriel Sostre SubTask 4 Third Sampling Event/Email Summary Report SubTask 9 SubTask 5 Fourth Groundwater Sampling Event /Cumulative ReSubTask 10

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

$73.56 Project Manager Greg Sattler 9.25 9.25 $72.79 Senior Engineer Donna Cline 10.00 0.00 2.00 2.00 2.00 4.00 0.00 $36.06 CADD Specialist Chelsea Fugate 11.00 0.00 2.00 2.00 2.00 5.00 0.00 $30.43 Environmental Tec Pat Beers 45.00 0.00 13.50 9.50 9.50 9.50 3.00 $39.73 Project Scientist Laura Sebastian 19.00 0.00 3.00 3.00 3.00 10.00 0.00 $73.56 Senior Engineer Greg Sattler 27.00 0.00 3.00 6.00 6.00 11.00 1.00

Total Hours 121.25 9.25 23.50 22.50 22.50 39.50 4.00 0.00 0.00

Direct Labor $5,915.46 $680.54 $968.38 $1,067.34 $1,067.34 $1,967.01 $164.85 $0.00 $0.00

Overhead 116.00% $6,861.93 $789.43 $1,123.32 $1,238.11 $1,238.11 $2,281.73 $191.23 $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 Fringe 56.263% $3,328.22 $382.89 $544.84 $600.52 $600.52 $1,106.70 $92.75 $0.00 $0.00 Total Labor $16,105.61 $1,852.86 $2,636.54 $2,905.97 $2,905.97 $5,355.44 $448.83 $0.00 $0.00

Travel Vehicle charge $600.00 120.00 120.00 120.00$ 120.00$ 120.00$ $0.00 $0.00 Mileage Costs $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 Per diem + Hotel $0.00 0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Travel $600.00 $120.00 $120.00 $120.00 $120.00 $120.00 $0.00 $0.00

Subcontrac(Services Procurement) Drilling (DPT) $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 Mobile Laboratory $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 IDW - PetroTech SE $215.00 $0.00 $0.00 $0.00 $0.00 215.00$ $0.00 $0.00 Geophysical $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 $215.00 $0.00 $0.00 $0.00 $0.00 $215.00 $0.00 $0.00 Handling Fee $21.50 $0.00 $0.00 $0.00 $0.00 $21.50 $0.00 $0.00 Total Subcontractor Cost $236.50 $0.00 $0.00 $0.00 $0.00 $236.50 $0.00 $0.00

Laboratory Analytical Costs $1,264.00 $316.00 $316.00 $316.00 $316.00 $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 Sample Shipping $440.00 $110.00 $110.00 $110.00 $110.00 $0.00 $0.00 $0.00 Total Laboratory $1,704.00 $426.00 $426.00 $426.00 $426.00 $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 Expendables $212.00 $53.00 $53.00 $53.00 53.00$ $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 Equipment (Analytical related) $2,110.00 $527.50 $527.50 $527.50 527.50$ $0.00 $0.00 $0.00 Equipment (IDW related) $100.00 $100.00 $0.00 $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 Total Field Expenses $2,422.00 $680.50 $580.50 $580.50 $580.50 $0.00 $0.00 $0.00

Subtotal $21,068.11 $1,852.86 $3,863.04 $4,032.47 $4,032.47 $6,481.94 $805.33 $0.00 $0.00 Completion Fee $1,610.56 $185.29 $263.65 $290.60 $290.60 $535.54 $44.88 $0.00 $0.00

Total Estimated Cost $22,678.67 $2,038.15 $4,126.69 $4,323.07 $4,323.07 $7,017.48 $850.21 $0.00 $0.00

Stroud Cleaners, ERIC_5529

REV: 02/03 CEF TERRACON Page 1

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Stroud Cleaners, ERIC_5529 SUBTASK 2: Period 1 Sampling/Email Summary Report

PROPOSAL NO. PH1257567

DATE: 6/3/2025

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Scientist GS Verification of property ownership, notify responsible parties of field activities 1.0 Senior Scientist GS 2.0

Field Activities Environmental Technician PB Obtain IDW Drum 1.00 Environmental Technician PB Load/unload equipment (1 hr./day) 1.00 Environmental Technician PB Mob/Demob from Site (1.5 hr./day) 1.50 Environmental Technician PB DTW collection, pre and post equipment calibration 2.00 Environmental Technician PB Groundwater sampling 3 deep wells (1.5 well/hour) 4.50 Environmental Technician PB Containerize purge water in IDW drum 0.50

Reporting - Email Deliverable Project Scientist LS 3.00 Senior Scientist PB Prepare report email summary, summarize groundwater analytical results 3.00 Senior Engineer DC Provide report email conclusions and recommendation 2.00 CADD Specialist CF Prepare Exhibits (groundwater flow and concentrations maps) 2.00

Personnel: PB GS LS DC CF Hours: 13.50 3.00 3.00 2.00 2.00 TOTAL LABOR 23.50

VEHICLE TYPE RATE UNIT USEAGE

Truck (Environmental Technician) 120.00$ days 1 120.00$

TOTAL VEHICLE 120.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES IDW Units GW VOHs - Halocarbons USEPA 8260 73.00$ 3 $219.00 iron USEPA 6020 15.00$ 2 $30.00 sodium USEPA 6020 15.00$ 1 $15.00 sulfate Method 300 21.00$ 1 $21.00 manganese USEPA 6020 15.00$ 1 $15.00

TDS SM2540C 16.00$ 1 $16.00

Sample Shipping Small Cooler (Overnight) 110.00$ 1 $110.00

TOTAL LAB $426.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

Ice - samples 6.50$ each 2 13.00$ Analytical Deep Groundwater Sampling Kit 415.00$ day 1 415.00$

Tubing, HDPE 0.30$ ft 375 112.50$ IDW New 55-gallon Drum 100.00$ each 1 100.00$

TOTAL EQUIPMENT 680.50$

Prepare field documents and equipment for the groundwater sampling event, order sample kits

Prepare updated tables and draft maps

SUBTASK 3: 2nd Sampling Event/Email Summary Report

PROPOSAL NO. PH1257567

DATE: 6/3/2025

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Engineer GS Verification of property ownership, notify responsible parties of field activities 1.0 Senior Engineer GS 2.0

Field Activities Environmental Technician PB Load/unload equipment (1 hr./day) 1.00 Environmental Technician PB Mob/Demob from Site (1.5 hr./day) 1.50 Environmental Technician PB DTW collection, pre an post equipment calibration 2.00 Environmental Technician PB Groundwater sampling 3 deep wells (1.5 well/hour) 4.50 Environmental Technician PB Containerize purge water in IDW drum 0.50

Reporting - Email Deliverable Project Scientist LS 3.00 Senior Engineer GS Prepare report email summary, summarize groundwater analytical results 3.00 Senior Engineer DC Provide report email conclusions and recommendation 2.00 CADD Specialist CF Prepare Exhibits (groundwater flow and concentrations maps) 2.00

Personnel: PB GS LS DC CF Hours: 9.50 6.00 3.00 2.00 2.00 TOTAL LABOR 22.50

VEHICLE TYPE RATE UNIT USEAGE

Truck (Environmental Technician) 120.00$ days 1 120.00$

TOTAL VEHICLE 120.00$

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM -$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

TOTAL SUBCONTRACTOR -$

LABORATORY COSTS

PARAMETER RATE # SAMPLES IDW Units GW VOHs - Halocarbons USEPA 8260 73.00$ 3 $219.00 iron USEPA 6020 15.00$ 2 $30.00 sodium USEPA 6020 15.00$ 1 $15.00 sulfate Method 300 21.00$ 1 $21.00 manganese USEPA 6020 15.00$ 1 $15.00

TDS SM2540C 16.00$ 1 $16.00

Sample Shipping Small Cooler (Overnight) 110.00$ 1 $110.00

TOTAL LAB $426.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

Ice - samples 6.50$ each 2 13.00$ Analytical Deep Groundwater Sampling Kit 415.00$ day 1 415.00$

Tubing, HDPE 0.30$ ft 375 112.50$ IDW Drum (Use existing drum) 100.00$ each 0 -$

TOTAL EQUIPMENT 580.50$

Prepare updated tables and draft maps

Prepare field documents and equipment for the groundwater sampling event, order sample kits

SUBTASK 4: Third Sampling Event/Email Summary Report

PROPOSAL NO. PH1257567

DATE: 6/3/2025

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Engineer GS Verification of property ownership, notify responsible parties of field activities 1.0 Senior Engineer GS 2.0

Field Activities Environmental Technician PB Load/unload equipment (1 hr./day) 1.00 Environmental Technician PB Mob/Demob from Site (1.5 hr./day) 1.50 Environmental Technician PB DTW collection, pre an post equipment calibration 2.00 Environmental Technician PB Groundwater sampling 3 deep wells (1.5 well/hour) 4.50 Environmental Technician PB Containerize purge water in IDW drum 0.50

Reporting - Email Deliverable Project Scientist LS 3.00 Senior Engineer GS Prepare report email summary, summarize groundwater analytical results 3.00 Senior Engineer DC Provide report email conclusions and recommendation 2.00 CADD Specialist CF Prepare Exhibits (groundwater flow and concentrations maps) 2.00

Personnel: PB GS LS DC CF Hours: 9.50 6.00 3.00 2.00 2.00 TOTAL LABOR 22.50

VEHICLE TYPE RATE UNIT USEAGE

Truck (Environmental Technician) 120.00$ days 1 120.00$

TOTAL VEHICLE 120.00$

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM -$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

TOTAL SUBCONTRACTOR -$

LABORATORY COSTS

PARAMETER RATE # SAMPLES IDW Units GW VOHs - Halocarbons USEPA 8260 Short List 73.00$ 3 $219.00 iron USEPA 6020 15.00$ 2 $30.00 sodium USEPA 6020 15.00$ 1 $15.00 sulfate Method 300 21.00$ 1 $21.00 manganese USEPA 6020 15.00$ 1 $15.00

TDS SM2540C 16.00$ 1 $16.00

Sample Shipping Small Cooler (Overnight) 110.00$ 1 $110.00

TOTAL LAB $426.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

Ice - samples 6.50$ each 2 13.00$ Analytical Deep Groundwater Sampling Kit 415.00$ day 1 415.00$

Tubing, HDPE 0.30$ ft 375 112.50$ IDW Drum (Use existing drum) 100.00$ each 0 -$

TOTAL EQUIPMENT 580.50$

Prepare field documents and equipment for the groundwater sampling event, order sample kits

SUBTASK 5: Fourth Groundwater Sampling Event /Cumulative Report

PROPOSAL NO. PH1257567

DATE: 6/3/2025

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Engineer GS Verification of property ownership, notify responsible parties of field activities 1.0 Senior Engineer GS 2.0

Field Activities Environmental Technician PB Load/unload equipment (1 hr./day) 1.00 Environmental Technician PB Mob/Demob from Site (1.5 hr./day) 1.50 Environmental Technician PB DTW collection, pre an post equipment calibration 2.00 Environmental Technician PB Groundwater sampling 3 deep wells (1.5 well/hour) 4.50 Environmental Technician PB Containerize purge water in IDW drum 0.50

Reporting - Cumulative Report / SRCR Project Scientist LS 10.00 Senior Engineer GS Prepare (Cumulative) Groundwater Monitoring Report 8.00 Senior Engineer DC QA/QC Data, provide report conclusions and recommendation 4.00 CADD Specialist CF Prepare Exhibits (groundwater flow and concentrations maps) 5.00

Personnel: PB GS LS DC CF Hours: 9.50 11.00 10.00 4.00 5.00 TOTAL LABOR 39.50

VEHICLE TYPE RATE UNIT USEAGE

Truck (Environmental Technician) 120.00$ days 1 120.00$

TOTAL VEHICLE 120.00$

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM -$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

TOTAL SUBCONTRACTOR -$

LABORATORY COSTS

PARAMETER RATE # SAMPLES IDW Units GW VOHs - Halocarbons USEPA 8260 Short List 73.00$ 3 $219.00 iron USEPA 6020 15.00$ 2 $30.00 sodium USEPA 6020 15.00$ 1 $15.00 sulfate Method 300 21.00$ 1 $21.00 manganese USEPA 6020 15.00$ 1 $15.00

TDS SM2540C 16.00$ 1 $16.00

Sample Shipping Small Cooler (Overnight) 110.00$ 1 $110.00

TOTAL LAB $426.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

Ice - samples 6.50$ each 2 13.00$ Analytical Deep Groundwater Sampling Kit 415.00$ day 1 415.00$

Tubing, HDPE 0.30$ ft 375 112.50$ IDW Drum (Use existing drum) 100.00$ each 0 -$

TOTAL EQUIPMENT 580.50$

Prepare field documents and equipment for the groundwater sampling event, order sample kits

SUBTASK 6: IDW Disposal

PROPOSAL NO.

DATE: 6/3/2025

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Coordinate IDW T&D - Drilling & Purge water IDW Senior Engineer GS 1.00 Field Techinician PB 3.00

Personnel: GS PB Hours: 1.00 3.00 TOTAL LABOR 4.00

VEHICLE TYPE RATE UNIT USEAGE

Truck (IDW management) $120 day 1 120.00$

TOTAL VEHICLE 120.00$

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

Petrotech SE 215.00$ drum 1 215.00$

TOTAL SUBCONTRACTOR 215.00$

IDW Disposal (purge water - single drum T&D cost)

Prepare waste characterization/Generator Profile Coordinate IDW T&D: Mobilize to site, meet transporter to sign manifests

1678 Lee Road Winter Park, FL 32789-2207

P (850) 692-7185 F (850) 692-7186

Terracon.com

May 16, 2025

Florida Department of Environmental Protection Waste Cleanup Program Waste Management Division 2600 Blair Stone Road Tallahassee, Florida 32399-2400

Attn: Gabriel Sostre, Environmental Specialist II P (850) 245-8749 E Gabriel.Sostre@FloridaDEP.gov

Re: Proposal for Four Groundwater Monitoring Events and Reporting Stroud Cleaners 115 East Plymouth Avenue Deland, Volusia County, Florida

ERIC_5529

Contract No. HW687 DC049A Terracon Proposal No. PH1257567

Dear Mr. Gabriel:

Terracon Consultants, Inc. (Terracon) appreciates the opportunity to submit this proposal to the Florida Department of Environmental Program (FDEP) Waste Cleanup Program to perform four (4) groundwater monitoring events. The first three groundwater sampling event will be summarized in an email deliverable, the last groundwater sampling event will include a report that summarized each of the groundwater monitoring events..

Scope of Services

Conduct four (4) groundwater monitoring events to include analysis of three (3) groundwater monitoring wells: MW006R, MW008, and MW010 for volatile organic hydrocarbons (VOHs).

Additionally, to satisfy the Underground Injection Control (UIC) requirements, a groundwater sample will be collected for pH and iron from MW003; and pH, sodium, sulfate, iron, manganese, and total dissolved solids (TDS) in MW005R.

Depth-to-water measurement will be collected from monitoring wells MW003, MW005R, MW006R, MW008, and MW010 to assess groundwater flow direction.

Prepare three (3) email summary reports and one (1) groundwater monitoring report (summarizing all 4 groundwater monitoring events) for the final sampling event.

See attached LOE for details

Schedule Deliverables: Three (3) email summary reports and one (1) cumulative groundwater monitoring report within 20 business days following receipt of each quarterly laboratory result.

Compensation See attached CEF for details.

Proposal for Four Groundwater Monitoring Events and Reporting Stroud Cleaners ERIC_5529 Deland, FL May 16, 2025 Terracon Proposal No. PH1257567

SITE BACKGROUND AND RECOMMENDATIONS

Stroud Cleaners was demolished in 1999. A new store was built in the same shopping plaza (College Plaza), and Stroud’s began operations there as a drop-off only facility that same year. The store has been a smoke shop since 2010.

Post Active Remediation Monitoring has been performed annually since 2017. The SVE system operated from May 2006 to November 2011. In 2016, the FDEP approved a Groundwater Limited Scope Remedial Action Plan, which consisted of in-situ chemical oxidation (ISCO). The ISCO injection of PersulfOx™ was conducted in January 2017.

In 2020, only one monitoring well reported a constituent of interest (COI) above the Groundwater Cleanup Target Level (GCTL), MW006R had PCE at 7.5 micrograms per liter (ug/L).

In 2022, the latest sampling event, PCE was identified in the groundwater sample collected from monitoring well MW006R (13 ug/L) and in monitoring well MW010 (3.7 ug/L).

SCOPE OF WORK

Conduct four (4) four groundwater sampling events for laboratory analysis of three (3) groundwater monitoring wells (MW006R, MW008, and MW010). The time period to perform the next groundwater monitoring events will be based on groundwater quality results and the recommendations of FDEP.

Additionally, to satisfy the Underground Injection Control (UIC) requirements, a groundwater sample will be collected for pH and iron from MW003; and pH, sodium, sulfate, iron, manganese, and total dissolved solids (TDS) from MW005R. Once the sample results for these UIC parameters are below either the Maximum Contaminant Level (MCL), referenced in 62-550, Florida Administrative Code (F.A.C) or naturally occurring background for two consecutive sampling events, then UIC requirements will be considered complete.

The intention of this proposal is to perform groundwater monitoring of the select monitoring wells until two consecutive quarterly events document concentrations of the COIs below the respective GCTLs, with the objective towards obtaining an no further action, pursuant to Risk Management Option 1 (RMO I) closure, Rule 62-780.680(1) F.A.C.

DELIVERABLES

The firsts three sampling events will be summarized in an email reports and the last sampling event will document the four groundwater monitoring events into one report. The report will summarize the groundwater sample events, field observations, and results of monitoring well analysis, updated data summary tables, and exhibits (including a graphical depiction of the groundwater elevation data and analytical results).

SCHEDULE

It is anticipated that groundwater sampling will commence within two weeks from TA Authorization Each deliverable of each event will be submitted to FDEP within 20 business days following receipt of laboratory results.

Proposal for Four Groundwater Monitoring Events and Reporting Stroud Cleaners ERIC_5529 Deland, FL May 16, 2025 Terracon Proposal No. PH1257567

CLOSING REMARKS

Terracon services will be conducted in accordance with the terms and conditions, contained within DEP Waste Cleanup Program (WCP) Contract No. HW687, executed January 5, 2022. It is understood that a Task Assignment will be issued to authorize us to perform this work.

We appreciate the opportunity to provide this proposal and look forward to working with you on this project. If you should have any questions or comments regarding this proposal, please contact either of the undersigned.

Sincerely, Terracon Consultants, Inc.

Greg Sattler, P.E. Donna Cline, P.E.

Department Manager Senior Associate / Engineer

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From: Craig Burns <craigburns@enviroserve.com> Sent: Saturday, September 28, 2024 11:00 AM To: Clementelli, Eric Cc: Nick Collins Subject: RE: Terracon - General Quote for Drycleaning Solvent/PFAS IDW T&D