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

DC010C Completion December 31, 2023

This TA authorizes costs associated with supplementary site assessment and refinement/revision of the site remedial approach recommended in the 2022 Soil Sampling Workplan. The total cost of this TA is $203,250.62 and this entire cost is fixed unit rate.

Dean Cox 850-245-8969 Contractor Contractor

Contractor Contractor

Contractor Contractor

Contractor

Terracon Consultants, Inc.

Terracon Consultants, Inc.

Donna Cline 813-321-0340

ERIC_5517

224 S. Florida Ave., Deland (Volusia)

Best Cleaners & Laundry

✔ $ 203,250.62

$ 203,250.62

Scope of Work

Teresa Booeshaghi

Teresa Booeshaghi Digitally signed by Teresa Booeshaghi Date: 2023.06.07 13:46:42 -04'00'

6/7/2023

N/A

Cline, Donna L Typewriter Donna Cline

Sr. Remediation Engineer

6/7/2023

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

Soil Sampling Event 1 certified lab reports, results summary in tables & figures for each sampling depth, and boring logs (Subtask 2 Soil Sampling - Initial Event) 07/31/2023

Soil Sampling Event 2 certified lab reports, results summary in tables & figures for each sampling depth, and boring logs (Subtask 3 Soil Sampling - Event 2) 08/31/2023

Soil Sampling Event 3 certified lab reports, results summary in tables & figures for each sampling depth, and boring logs (Subtask 4 Soil Sampling - Event 3) 09/30/2023

Supplementary Site Assessment (SSA) & Remedial Approach Refinement Report, including Conceptual Site Model (Subtask 1 Project Management and Subtask 6 SSA & Remedial Approach Refinement Report)

10/31/2023

DEP approval of Soil Sampling Event 1 certified lab reports, results summary in tables & figures for each sampling depth, and boring logs (Subtask 2 Soil Sampling - Initial Event)

$ 86,040.43

DEP approval of Soil Sampling Event 2 certified lab reports, results summary in tables & figures for each sampling depth, and boring logs (Subtask 3 Soil Sampling - Event 2)

$ 60,287.30

DEP approval of Soil Sampling Event 3 certified lab reports, results summary in tables & figures for each sampling depth, and boring logs (Subtask 4 Soil Sampling - Event 3)

$ 43,295.33

DEP approval of Supplementary Site Assessment (SSA) & Remedial Approach Refinement Report, including Conceptual Site Model (Subtask 1 Project Management and Subtask 6 SSA & Remedial Approach Refinement Report)

$ 11,856.56

Submittal of Investigation Derived Waste (IDW) manifests (Subtask 5 IDW Management) $ 1,771.00

$ 203,250.62

HW687

DC010C

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 Interim Secretary

Negotiation Summary

TO: HW687 Contract File FROM: Dean Cox, Contract Manager SUBJECT: DC010C Best Cleaners ERIC_5517 SSA & Remedial Approach Refinement

DATE: 6/6/23

This TA authorizes costs associated with supplementary site assessment & refinement/revision of the site remedial approach recommended in the 2022 Soil Sampling Workplan, as approved by the WSCS PE. The total cost of this TA is $203,250.62 and this entire cost is fixed unit rate. This TA was negotiated - the total cost is $15,730.68 or 7% less than originally proposed.

The WSCS PE approved the scope of this TA after meeting with Terracon multiple times and providing input. The remedial effort will likely include conventional and LDA excavation, SVE, and a groundwater component. Site access was confirmed.

Attachment A

Cost Estimate Form/Level of Effort and TA Proposal Letter

FDEP COST ESTIMATE

Contractor: Terracon

Date: 6/2/2023 Task #: SubTask 1 Project Management SubTask 6 SSA & Remedial Approach Refinement Report

SubTask 2 Soil Sampling - Initial Event SubTask 7 SubTask 3 Soil Sampling - Event 2 SubTask 8

Site: Best Cleaners Activity/Phase: Supplemental Site Assessment and Remedial Approach Refinement Project Manager: Dean Cox SubTask 4 Soil Sampling - Event 3 SubTask 9

SubTask 5 IDW Management SubTask 10

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

$67.74 Project Manager Donna Cline 28.75 28.75 $32.50 CADD Specialist Chelsea Fugate 37.00 10.00 10.00 5.00 12.00 $29.33 Staff Scientist Rachael Greller 177.00 58.00 58.00 57.00 4.00 $28.89 Staff Engineer Kayla Rothman 144.00 46.00 46.00 46.00 6.00 $22.45 Field Geologist Jared Duncan 32.00 9.00 9.00 7.00 7.00 $51.97 Senior Scientist/Geologist Lydia Wing 49.00 18.00 10.00 10.00 1.00 10.00 $43.27 Senior Scientist/Engineer Michael Mui 19.00 3.00 3.00 3.00 10.00 $67.74 Senior Engineer Donna Cline 5.00 5.00 $0.00 0.00 $0.00 0.00 $0.00 0.00 $0.00 0.00

Total Hours 491.75 28.75 144.00 136.00 128.00 5.00 50.00 0.00 0.00 0.00 0.00

Direct Labor $16,927.21 $1,947.38 $4,622.40 $4,206.64 $3,969.91 $169.29 $2,011.59 $0.00 $0.00 $0.00 $0.00

Overhead 116.00% $19,635.56 $2,258.96 $5,361.98 $4,879.70 $4,605.10 $196.38 $2,333.44 $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 56.26% $9,523.25 $1,095.60 $2,600.56 $2,366.66 $2,233.47 $95.24 $1,131.72 $0.00 $0.00 $0.00 $0.00 Total Labor $46,086.02 $5,301.94 $12,584.94 $11,453.00 $10,808.48 $460.91 $5,476.75 $0.00 $0.00 $0.00 $0.00

REV: 02/03 CEF TERRACON Page 1

FDEP COST ESTIMATEContractor: Terracon Date: 6/2/2023

Task #: SubTask 1 Project Management SubTask 6 SSA & Remedial Approach Refinement Report SubTask 2 Soil Sampling - Initial Event SubTask 7 SubTask 3 Soil Sampling - Event 2 SubTask 8

Site: Best Cleaners Activity/Phase: Supplemental Site Assessment and Remedial Approach Refinement Project Manager: Dean Cox SubTask 4 Soil Sampling - Event 3 SubTask 9

SubTask 5 IDW Management SubTask 10

Totals 1 2 3 4 5 6 7 8 9 10 Travel

Vehicle charge $3,080.00 1,040.00$ 960.00$ 960.00$ 120.00$ $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 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 $3,080.00 $1,040.00 $960.00 $960.00 $120.00 $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 (Sonic) - EDS $25,300.00 8,480.00$ 8,420.00$ 8,400.00$ $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 - SurvTech $3,960.00 3,960.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 IDW - Petrotech Southeast $1,040.00 $0.00 $0.00 $0.00 1,040.00$ $0.00 $0.00 $0.00 $0.00 $0.00 Geophysical Survey -Geoview $1,300.00 1,300.00$ $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 $31,600.00 $13,740.00 $8,420.00 $8,400.00 $1,040.00 $0.00 $0.00 $0.00 $0.00 $0.00 Handling Fee $3,160.00 $1,374.00 $842.00 $840.00 $104.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Subcontractor Cost $34,760.00 $15,114.00 $9,262.00 $9,240.00 $1,144.00 $0.00 $0.00 $0.00 $0.00 $0.00

Laboratory Analytical Costs $95,394.00 48,576.00$ 30,000.00$ 16,818.00$ $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 $1,650.00 600.00$ 600.00$ 450.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Laboratory $97,044.00 $49,176.00 $30,600.00 $17,268.00 $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 $623.00 212.00$ 212.00$ 199.00$ $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) $16,524.00 6,480.00$ 6,480.00$ 3,564.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (IDW related) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (Other) $525.00 175.00$ 175.00$ 175.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Field Expenses $17,672.00 $6,867.00 $6,867.00 $3,938.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subtotal $198,642.02 $5,301.94 $84,781.94 $59,142.00 $42,214.48 $1,724.91 $5,476.75 $0.00 $0.00 $0.00 $0.00 Completion Fee $4,608.60 $530.19 $1,258.49 $1,145.30 $1,080.85 $46.09 $547.68 $0.00 $0.00 $0.00 $0.00

Total Estimated Cost $203,250.62 $5,832.13 $86,040.43 $60,287.30 $43,295.33 $1,771.00 $6,024.43 $0.00 $0.00 $0.00 $0.00

REV: 02/03 CEF TERRACON Page 2

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Best Cleaners SUBTASK 2: Soil Sampling - Initial Event

PROPOSAL NO. PH1227D12

DATE: 6/2/2023

LABOR CATEGORY

STAFF-TITLE HOURS

Field Task Planning Project Scientist/Geologist LW 2.00 Project Scientist/Geologist LW 1.00 Project Scientist/Geologist LW 1.00 Project Scientist/Geologist LW 3.00 Soil Sampling for Continuous Cores - 1st Mobilization Field Scientist RG Load/unload equipment (1 hr/day) 2.00 Staff Engineer KR Work oversight, direct work, safety debrief (8 hr/day, 4 days) 32.00 Field Scientist RG OVA screen, lithological description, collect samples for lab analysis (10 hrs/day, 4 days) 36.00 Senior Geologist LW Kickoff meeting and direct work logistics (2 hr/day, 4 days, 1st event) 5.00 Staff Engineer KR Finalize field notes, boring logs, lab COCs, at end of day for PM evaluation (1 hour/day) 2.00 Field Scientist RG Containerize IDW (0.5 hrs/day) 2.00 Interim Evaluation of Soil Data / Develop Next Event Sampling Plan Field Scientist RG Summarize data in soil table, draft soil exhibits 6.00 Project Scientist/Geologist LW Evaluate data and propose next sampling event, teleconference with FDEP 3.00 Project Scientist/Engineer MM Evaluate data with respect to RAE, propose next sampling event, teleconference with FDEP 3.00 CADD Specialist CF Prepare soil exhibits of new data, concentration per interval, show the proposed soil location 10.00 Field Scientist JD Prepare soil boring logs in gINT (0.5 hours per boring/ 20 borings) 9.00 Mobilization / Demobilizations Staff Engineer KR Pre-drill meeting, 3 days field visits (total 4 days, 1.5 hour/day mob and 1.5 hour/day demob) 12.00 Field Scientist RG 4 days field visits (3 hour/day demob) 12.00 Senior Geologist LW Pre-drill meeting 3.00

MM

3.00

Personnel: KR RG JD CF LW Hours: 46.00 58.00 9.00 10.00 18.00 TOTAL LABOR 144.00

VEHICLE TYPE RATE UNIT USEAGE

Truck (Project Scientist) 480.00$ week 1 480.00$ Truck (Field Scientist) 480.00$ week 1 480.00$ Auto (Senior Geologist) 80.00$ days 1 80.00$

TOTAL VEHICLE 1,040.00$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

Geoview GPR 1,300.00$ each 1 1,300.00$ EDS 8,480.00$ each 1 8,480.00$ SurvTEch Survey 3,960.00$ each 1 3,960.00$

TOTAL SUBCONTRACTOR 13,740.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES IDW

Halocarbons (soil -short) EPA 8260 63.00$ 240 15,120.00$ Halocarbons (prep) EPA5035 7.00$ 240 1,680.00$ Zero Head Space Extraction EPA 1311 Prep 55.00$ 240 13,200.00$ Aromatics (soil) EPA 8260 60.00$ 72 4,320.00$ PAHs (soil) EPA 8270 110.00$ 72 7,920.00$ TRPH (soil) FLPro 88.00$ 72 6,336.00$ SPLP or speciation to be authorized by WCD Sample Shipping Large Cooler (overnight) 150.00$ 4 600.00$

TOTAL LAB 49,176.00$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 4 160.00$

Ice (preservation of samples/2 per day 6.50$ day 8 52.00$ Equipment (Analytical) Encore Sampler 16.00$ each 240 3,840.00$

Terra Core Sampler 11.00$ day 240 2,640.00$ Equipment (IDW) 55-gallon drums (provided by driller) -$ day 0 -$ Equipment (Other) GPS, Trimble 175.00$ day 1 175.00$

Photoionization Meter 88.00$ day 0 -$

TOTAL EQUIPMENT 6,867.00$

*PROVIDE TIME REQUIRED FOR EACH PERSON

WORK DESCRIPTION

Pre-task planning, prepare field sampling SOW, coordinate site access Prepare Health and Safety Plan Request sample kits (1st event) Pre-Drill Meeting with site owner, driller, and meet with GPR company

Drilling

SUBTASK 3: Soil Sampling - Event 2

PROPOSAL NO. PH1227D12

DATE: 6/2/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE HOURS

Field Task Planning Project Scientist/Geologist LW 2.00 Project Scientist/Geologist LW - Project Scientist/Geologist LW 1.00 Soil Sampling for Continuous Cores - 2nd Mobilization Field Scientist RG Load/unload equipment (1 hr/day) 2.00 Project Scientist KR Work oversite, direct work, safety debrief (8 hr/day, 4 days) 32.00 Field Scientist RG OVA screen, lithological description, collect samples for lab analysis (10 hrs/day, 4 days) 36.00 Senior Geologist LW Kickoff meeting and direct work logistics (1 hr/day, 4 days) 4.00 Project Scientist KR Finalize field notes, boring logs, lab COCs, at end of day for PM evaluation (1 hour/day) 2.00 Field Scientist RG Containerize IDW (0.5 hrs/day) 2.00 Interim Evaluation of Soil Data / Develop Next Event Sampling Plan Field Scientist RG Summarize data in soil table, draft soil exhibits 6.00 Project Scientist LW Evaluate data and propose next sampling event, teleconference with FDEP 3.00 Project Scientist/Engineer MM Evaluate data with respect to RAE, propose next sampling event, teleconference with FDEP 3.00 CADD Specialist CF Prepare soil exhibits of new data, concentration per interval, show the proposed soil location 10.00 Field Scientist JD Prepare soil boring logs in gINT (0.5 hours per boring/ 20 borings) 9.00 Mobilization / Demobilizations Project Scientist KR 4 day field visits (total 4 days, 1.5 hour/day mob and 1.5 hour/day demob) 12.00 Field Scientist RG 4 days field visits (3 hour/day demob) 12.00 Senior Geologist LW Pre-drill meeting -

MM

3.00

Personnel: KR RG JD CF LW Hours: 46.00 58.00 9.00 10.00 10.00 TOTAL LABOR 136.00

VEHICLE TYPE RATE UNIT USEAGE

Truck (Project Scientist) 480.00$ week 1 480.00$ Truck (Field Scientist) 480.00$ week 1 480.00$ Truck (Senior Geologist) 120.00$ days 0 -$

TOTAL VEHICLE 960.00$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

EDS 8,420.00$ each 1 8,420.00$

TOTAL SUBCONTRACTOR 8,420.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES IDW

Halocarbons (soil -short) EPA 8260 63.00$ 240 15,120.00$ Halocarbons (prep) EPA5035 7.00$ 240 1,680.00$ SPLP (Zero Head Space) EPA 1311 Prep 55.00$ 240 13,200.00$ Sample Shipping Large Cooler (overnight) 150.00$ 4 600.00$

TOTAL LAB 30,600.00$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 4 160.00$

Ice (preservation of samples/2 per day 6.50$ day 8 52.00$ Equipment (Analytical) Encore Sampler 16.00$ each 240 3,840.00$

Terra Core Sampler 11.00$ day 240 2,640.00$ Equipment (IDW) 55-gallon drums (provided by driller) -$ day 0 -$ Equipment (Other) GPS, Trimble 175.00$ day 1 175.00$

Photoionization Meter 88.00$ day 0 -$

TOTAL EQUIPMENT 6,867.00$

WORK DESCRIPTION

Pre-task planning, prepare field sampling SOW Prepare Health and Safety Plan Request sample kits (2nd event)

Drilling Costs SOW Shown in Subcontractor Proposal

SUBTASK 4: Soil Sampling - Event 3

PROPOSAL NO. PH1227D12

DATE: 6/2/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning Project Scientist/Geologist LW 2.00 Project Scientist/Geologist LW 1.00 Soil Sampling for Continuous Cores - 2nd Mobilization Field Scientist RG Load/unload equipment (1 hr/day) 2.00 Project Scientist KR Work oversite, direct work, safety debrief (8 hr/day, 4 days) 32.00 Field Scientist RG OVA screen, lithological description, collect samples for lab analysis (10 hrs/day, 4 days) 36.00 Senior Geologist LW Kickoff meeting and direct work logistics (1 hr/day, 4 days) 4.00 Project Scientist KR Finalize field notes, boring logs, lab COCs, at end of day for PM evaluation (1 hour/day) 2.00 Field Scientist RG Collect IDW samples - Field Scientist RG Containerize IDW (0.5 hrs/day) 2.00 Interim Evaluation of Soil Data / Develop Next Event Sampling Plan Field Scientist RG Summarize data in soil table, draft soil exhibits 5.00 Project Scientist LW Evaluate data, teleconference with FDEP 3.00 Project Scientist/Engineer MM Evaluate data with respect to RAE, propose next sampling event, teleconference with FDEP 3.00 CADD Specialist CF Prepare soil exhibits of new data, concentration per interval 5.00 Field Scientist JD Prepare soil boring logs in gINT (0.5 hours per boring/ 15 borings) 7.00 Mobilization / Demobilizations Project Scientist KR 4 day field visits (total 4 days, 1.5 hour/day mob and 1.5 hour/day demob) 12.00 Field Scientist RG 4 days field visits (3 hour/day demob) 12.00

MM

3.00

Personnel: KR RG JD CF LW Hours: 46.00 57.00 7.00 5.00 10.00 TOTAL LABOR 128.00

VEHICLE TYPE RATE UNIT USEAGE

Truck (Project Scientist) 120.00$ day 4 480.00$ Truck (Field Scientist) 120.00$ day 4 480.00$

TOTALVEHICLE 960.00$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

EDS 8,400.00$ each 1 8,400.00$

TOTAL SUBCONTRACTOR 8,400.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES IDW

Halocarbons (soil -short) EPA 8260 63.00$ 132 8,316.00$ Halocarbons (prep) EPA5035 7.00$ 132 924.00$ SPLP (Zero Head Space) EPA 1311 Prep 55.00$ 132 7,260.00$ Sample Shipping Large Cooler (overnight) 150.00$ 3 450.00$ IDW VOCs - Halocarbons EPA 8260 73.00$ 146.00$ IDW VOCs - Aromatics EPA 8260 60.00$ 2 120.00$ TCLP - VOCs 52.00$ 1 52.00$

TOTAL LAB 17,268.00$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 4 160.00$

Ice (preservation of samples/2 per day 6.50$ day 6 39.00$ Equipment (Analytical) Encore Sampler 16.00$ each 132 2,112.00$

Terra Core Sampler 11.00$ day 132 1,452.00$ Equipment (IDW) 55-gallon drums (provided by driller) -$ day 0 -$ Equipment (Other) GPS, Trimble 175.00$ day 1 175.00$

Photoionization Meter 88.00$ day 0 -$

TOTAL EQUIPMENT 3,938.00$

Pre-task planning, prepare field sampling SOW Request sample kits (3rd event)

Drilling Costs SOW Shown in Subcontractor Proposal

SUBTASK 5: IDW Management

PROPOSAL NO. PH1227D12

DATE: 6/2/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Coordinate IDW T&D Senior Scientist/Geologist LW 1.00 Environmental Technician RG 4.00

Personnel: LW PC DN CF Hours: 1.00 0.00 0.00 0.00 TOTAL LABOR 5.00

VEHICLE TYPE RATE UNIT USEAGE

Truck (IDW management) 120 day 1 120.00$

TOTAL VEHICLE 120.00$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

Petrotech 110.00$ drum 7 770.00$

90.00$ drum 3 270.00$

TOTAL SUBCONTRACTOR 1,040.00$

IDW Disposal (drill cuttings/soil)

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

IDW Disposal (3 drilling/decon)

SUBTASK 6: SSA & RAR Report

PROPOSAL NO. PH1227D12

DATE: 6/2/2023

LABOR CATEGORY

STAFF-TITLE HOURS

Report Deliverable Project Scientist KR 6.00 Senior Geologist LW 4.00 Senior Geologist LW 2.00 Senior Geologist LW 4.00 Senior Scientist/Engin MM 10.00 Donna Cline DC 5.00

CADD Specialist CF 12.00 Field Geologist JD 7.00

DC

5.00

Personnel: KR LW MM CF JD Hours: 6.00 10.00 10.00 12.00 7.00 TOTAL LABOR 50.00

*PROVIDE TIME REQUIRED FOR EACH PERSON

WORK DESCRIPTION

Prepare draft report introduction, recent activities summary, and discussion of results QA/QC field and laboratory data Soil Summary Evaluation Soil Analytical Results and Summary Evaluation Conclusions & Remedial Approach Refinement Remedial Approach Refinement and sign and seal report

Prepare Exhibits (site setting, interval cross sections, and concentrations maps) Prepare cross section(s) (up to 3 cross sections)

1675 Lee Road Winter Park, FL 32789

P (407) 740-6110 Terracon.com

May 24, 2023

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

Attn: Mr. Dean Cox, Environmental Consultant

Re:

E: Dean.Cox@FloridaDEP.gov W: 850-245-8969 M: 727-686-6502

Proposal for Supplemental Site/Soil Assessment and Remedial Approach Refinement Best Cleaners & Laundry 224 South Florida Avenue Deland, Volusia County, Florida

ERIC_5517

Contract No. HW687 Terracon Proposal No. PH1237D12

Dear Dean:

Terracon Consultants, Inc. (Terracon) appreciates the opportunity to submit this proposal to the Florida Department of Environmental Program (FDEP) Waste Cleanup Program to conduct soil assessment activities and prepare a Supplemental Soil/Site Assessment and Remedial Approach Refinement Report for the Best Cleaners (ERIC_5517) facility located at 224 South Florida Avenue, Deland, Volusia County, Florida.

Scope of Services

Field preparation, prepare Health and Safety Plan.

Advance an estimated 51 direct push technology (DPT) soil borings to a depth of 35 feet below grade, conducted over 3 separate mobilizations;

Perform soil sample collection at the following depths (feet below grade): 1, 3, 5, 7, 9, 12, 15, 18, 20, 25, 30 and 35.

Submit soil samples for laboratory analysis of volatile organic halocarbons (VOHs), a select few interior samples (from the former soil excavation area) will be collected for volatile organic compounds (VOCs), polynuclear aromatic hydrocarbons (PAHs) and total recoverable petroleum hydrocarbons (TRPH). Additionally, a sample will be collected for synthetic precipitate leaching procedure (SPLP) and TRPH speciation and held pending the results of the totals analysis.

Properly grout each boring to surface.

Properly manifest the soil and water (decontamination fluids) drums of investigative derived waste (IDW).

Prepare a Supplemental Soil Assessment & Remedial Approach Refinement Report (SSA&RAR).

See attached LOE for details

Proposal for SSA and Remedial Approach Refinement Best Cleaners, ERIC_5517 ■ Deland, FL May 24, 2023 ■ Terracon Proposal No. PH1237166

Schedule Deliverable of SSA&RAR report within 20 business day following receipt of laboratory results.

Compensation See attached CEF for details.

SITE REVIEW

Best Cleaners & Laundry was formerly a stand-alone building that was demolished in 2016. The property is currently vacant and houses the foundation of the former building. The City of Deland is currently preparing conceptual plans to redevelop the property and evaluating the potential construction of a parking area and sanitary sewer lift station.

Various remedial efforts at the former facility conducted since 2000 under the Drycleaning Solvent Cleanup Program. In October 2000, approximately 150 tons of impacted soil was removed from the source area on the exterior of the building. A remediation system consisting of air sparging and soil vapor extraction (AS/SVE) was installed in February 2001 and operated intermittently from February 2001 until October 2005. The system was modified in 2008 with the use of shallow and deep SVE wells. The system was shut down in June 2010 and restarted in February 2011. Operations and Maintenance (O&M) was performed at the site until a system malfunction in May 2012. The remediation system was disassembled and removed in January 2013.

Soil assessment activities were conducted by PSI/Intertek in November 2019 and recommended an Interim Source Removal.

In December 2022, Terracon prepared a Soil Sampling Workplan, that evaluated the existing data, included the preparation of a comprehensive soil data set, and provided a path toward site closure.

This data presented included lithological cross-sections, soil concentration contour maps, and a three-dimensional model based on existing soil data to supplement the conceptual site model and identified data gaps.

In conclusion, the contamination impacts within the vadose zone appear to be amenable to treatment by a combination of source removal and SVE strategies. However, supplemental soil assessment is needed to address data gaps and allow the proposed remedial design to be finalized. The scope of this work is detailed herein.

SCOPE OF SERVICES

Following discussions with Robert Huckaby, Dean Cox and Breck Dalton, the summary of the work to be performed includes the following:

Site drilling meeting with owner, drillers, and FDEP personnel. Oversight of geophysical survey subcontractor for private utility locate.

The site investigation will be performed during 3 separate mobilization events. The initial event will include the advancement of 20 DPT borings, focusing within the source area(s) within the interior of the site.

Soil sample collection will be performed at the following depths (feet below grade): 1, 3, 5, 7, 9, 12, 15, 18, 20, 25, 30 and 35. The soils will be screened with an organic vapor analyzer photoionization detector (OVA-PID), soil lithology will be described and photographed, and

May 24, 2023 ■ Terracon Proposal No. PH1237166 samples will be collected for VOH short list. Additionally, soil samples will be collected for SPLP extraction and held for SPLP analysis pending the results of the total analysis.

Six of the 20 proposed borings will be advanced within the vicinity of the former Interim Source Removal area located on the south side of former building for Best Cleaners. The samples from these boring will be analyzed for total VOAs, PAHs and TRPH. Additionally, soil samples will be collected for TRPH speciation, and SPLP extraction for VOC/SVOC; however, these samples/extractions will be held for analysis pending the results of the total analysis.

Since the quantity of SPLP analysis required will not be determined until the initial laboratory analytical results is issued, we will plan to submit this as a Work Change Directive;

The borings will be tremie or pressure grouted upon completion.

Drilling services will be provided by EDS with a total number of field days estimated to be 12 days. As three separate events are proposed, each event will consist of 4 days. An estimated 20 borings will be completed each event.

Upon the completion of each mobilization event, the soil data will be reviewed and summarized in tables, exhibits and GINT soil boring logs will be prepared illustrating the soil concentrations per interval, and coordination with FDEP on the next proposed sampling locations for the subsequent event.

PFAS-free water will be provided by the driller on a daily basis from their yard which has been certified free from PFAS constituents.

Approximately 10 drums of IDW, soil and water drummed separately, will be staged on-site by the driller;

Terracon personnel will GPS the location of each of the soil borings Collection of one sample from the IDW (soil and water separately for a total of two samples) produced by drilling activities for VOH analysis. Collection of one sample from the drum of purge water for laboratory analysis of VOH. Subcontract the service of Petrotech Southeast to manifest, transport and dispose of up to 65 drums of drilling IDW (VOH), and one drum of purge water IDW (VOH and PFAS).

Preparation of an SSA&RAR Report to include an evaluation of all soil data, and recommendations towards remedial approach refinement and site closure options.

DELIVERABLES

The SSA&RAR Report will provide a summary of previous assessment activities, detail recent assessment activities, refine remedial recommendations, and provide recommendations to progress the site to closure under Chapter 62-780, F.A.C. The SSA&RAR Report will be signed and sealed by a Florida Registered Professional Engineer.

SCHEDULE

The SSA&RAR Report will be completed within 60 business days of receipt of Task Assignment, dependent of driller availability.

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.

May 24, 2023 ■ Terracon Proposal No. PH1237166

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 at 813-221-0050.

Sincerely, Terracon Consultants, Inc.

Donna Cline, P.E. Lydia Wing Senior Remediation Engineer Senior Project Manager

Attachments: Cost Spreadsheet Level of Effort

Subcontractor quotes and comparisons

Attachment B

Summary of Quote Comparisons and

Subcontractor Quotes

QTY Unit Price Extended Price QTY Unit Price Extended Price QTY Unit Price Extended Price QTY Unit Price Extended Price Mobe 3 500.00$ 1,500.00$ 3 775.00$ 2,325.00$ 3 1,700.00$ 5,100.00$ 3 800.00$ 2,400.00$

DPT/ Daily Rate 12 1,800.00$ 21,600.00$ 9 1,875.00$ 16,875.00$ 12 2,100.00$ 25,200.00$ 12 1,850.00$ 22,200.00$ Per Diem 12 300.00$ 3,600.00$ 6 450.00$ 2,700.00$ 12 450.00$ 5,400.00$

Liners 306 4.00$ 1,224.00$ Drums 8 75.00$ 600.00$ 6 70.00$ 420.00$ 4 100.00$ 400.00$ 10 60.00$ 600.00$ Grout 12 200.00$ 2,400.00$ 9 150.00$ 1,350.00$ 51 65.00$ 3,315.00$ 5 20.00$ 100.00$ Decon 3 350.00$ 1,050.00$ Coring 3 125.00$ 375.00$ 1 300.00$

PFAS Pree water 3 500.00$ 1,500.00$

TOTAL 29,700.00$ 25,545.00$ 41,989.00$ 25,300.00$

Total Days *PFAS free water not included * PFAS-free water approved

Event 1 8,480.00$ Event 2 8,420.00$

Selected Contractor: Environmental Drilling Services Event 3 8,400.00$

25,300.00$

12 9 12 12

Best Cleaners & Laundry (ERIC_5517) 224 South Florida Avenue

Deland, Volusia County, Florida

BID SUMMARY - DRILLER QUOTES

Proposal for Supplemental Soil Sampling and Remedial Alternative Evaluation

JAEE Preferred Drilling Cascade Enviromental Drilling Services Description

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Preferred Drilling Solutions, Inc.

8820 66th St. North, Pinellas Park, FL 33782

Ph: 727-561-7477 Fax: 727-561-9028 www.pdsflorida.com

DIRECT PUSH TECHNOLOGY QUOTE FORM

Date: 2/28/23 FAC ID#:

Unit Unit Rate Number of Units Extended Price whole day $1,875.00 9 16,875.00$ half day $1,450.00 -$ per foot $30.00 -$ each $110.00 -$ each $45.00 -$ each $30.00 -$ per well $125.00 -$ roundtrip $775.00 3 2,325.00$ per crew / per night $450.00 6 2,700.00$ each $70.00 6 420.00$ each $125.00 -$ per day $150.00 9 1,350.00$ each -$ lump sum $350.00 -$ per day $125.00 3 375.00$ per day $500.00 3 1,500.00$

TOTAL QUOTE PRICE $25,545.00

Notes: 1. Includes saw cuts, development, standby time, and decon.

Project No.:

Subcontract Company Name: Preferred Drilling Solutions, Inc. (727) 561-7477

Subcontract Mailing Address: 8820 66th St, Pinellas Park, FL 33782

Signature and Title of Person Submitting Quote: ___________________________________Kevin Bonacum, Estimator Date: 2/28/23

Days to Complete Scope of Work: 9

Direct Push Daily Rate 1 - on-site day

Equipment Type: Geoprobe 8040DT, Geoprobe 3230DT, Geoprobe 7822DT

*Note: It is against PDS policy to drill in Pea Gravel. Borings in Pea Gravel will be terminated or can proceed solely at the risk of the consultant, DEP or Property Owner

Concrete Core Drill

Decon Pad & Steam Cleaner

Poly Tank w/ Approved Water (from Lakeland, FL)

Refurbished - DOT Approved 55-gal Drum

Per Diem

Mobilization

DIRECT PUSH TECHNOLOGY

MISCELLANEOUS

GeoProbe Consumables (includes tubing, points, liners, concrete patch, asphalt patch, and grouting)

New - DOT Approved 55-gal Drum

Permits

Site Name and Location: Best Cleaners

Consultant Name: Terracon

PROPOSED SCOPE OF WORK:

51 Soil borings to approx. 35', backfill borings with grout, restore grade

(8) Boring locations will require a concrete core through approx 6" of concrete

224 South Florida Ave, DeLand, Volusia County, FL

Well Completion (includes MH w/ cover, concrete, and locking well cap)

Well Riser (includes all materials) ID 1" 5' Length

Slotted PVC Well Screen (includes all materials) 5' Length Pack OD 3.5"

Pre-Packed Well Screen (includes all materials) ID 1" 5' Length Pack OD 3.5"

2" Well Install (includes all materials)

Direct Push Half-Day Rate 1 - on-site half day

Decon all down hole tooling with Alconox/Liquinox with PFAS free water

*** Scope of work to be completed over 3 separate events / mobilizations ***

Drum cuttings

Cascade Remediation Services • 3020 Avondale Mill Rd #B • Macon, GA 31216 • 9517425497

Site: Best Cleaners, ERIC_5517 Address: 224 South Florida Avenue, DeLand, Florida, Volusia County

Site is vacant property with enough space to stage equipment, drums etc.

Former on-site drycleaner structure has been demolished.

Utilities have been disconnected.

DPT Sampling Services

• Scope will be scheduled in 3 separate mobilization events.

• Concrete core up to (8) locations (5” X<6” thickness).

• At (51) locations, hand auger to collect soil samples at 1-ft, 3-ft, and 5-ft below ground surface (bgs).

• At same (51) locations, collect continuous core soil samples to 35 ft bgs, collecting samples at 7, 9, 12, 15, 18, 20, 25,30, 35 feet bgs

• Decon between each soil boring.

• Each location will be grouted and patched to match existing surface.

• IDW/drill cuttings will be containerized in 55-gallon drums and stage on-site.

• Water: No water source on-site. Cascade will provide tote of water.

Cascade estimates completing 4 to 5 borings per day for a total of 12 field days across 3 separate mobilizations.

This is NOT a prevailing wage job.

-Due to a volatile pricing environment, Cascade is unable to guarantee the pricing for a period longer than SIX MONTHS from the date of the bid submittal. If the work extends past this DATE, the agreement can be amended to extend the period of performance and address any potential adjustment in pricing resulting from actual increases in costs of labor, materials, and fuel. If you would like to discuss it further, please feel free to reach out.

mgerber@cascade-env.comEmailMichael GerberPrepared By

224 South Florida Avenue Deland, FL 32720

Work Site

Terracon - Best Cleaners DeLand, FL - DPT - 00176538

Opportunity Name

3/1/2023 6:14 AMQuote Revision Date

00075291Quote Number

(321) 347-3196Phone rachael.greller@terracon.comEmail

Rachael GrellerContact Name

Address

TerraconAccount Name

Cascade Rep Contact Information

Scope of Work

Product Description Quantity Unit Sales Price Optional Subtotal

Mobilization/Demobilization 3.00 Each $1,700.00 $5,100.00

6610/7822 Track Mounted DPT Rig, 2 Person Crew (10Hr Days) 12.00 Day $2,100.00 $25,200.00

Per Diem, 2 Person Crew 12.00 Day $450.00 $5,400.00

Soil Sample Liners, 5ft length 306.00 Each $4.00 $1,224.00

DPT Borehole Abandonment 51.00 Each $65.00 $3,315.00

IDW Drums (estimated) 4.00 Each $100.00 $400.00

Temp Decon 3.00 Each $350.00 $1,050.00

Cascade Remediation Services • 3020 Avondale Mill Rd #B • Macon, GA 31216 • 9517425497

Cascade provides management of investigation derived waste. Call us today for information on a full range of additional options to meet your drilling needs.

Signature of Authorized Cascade Representative

Name & Title of Authorized Cascade Representative

Date

Signature of Client/ Owner Authorized Representative

Name & Title of Authorized Representative and Company

Date

This quote is based on information provided by you and is valid for 45 days from the bid date. Your firm is responsible for 1) Obtaining any site specific permits, 2) Locating and clearly marking underground installations or utilities, 3) Furnishing dig Alert numbers at least three working days prior to scheduled start date and proof of private locating services, 4) Obtaining access to site with no overhead wires within 20' of the holes. On-site soil disposal, unless Cascade expressly assumes responsibility in writing. Cascade shall not be responsible for damages to underground improvements not clearly and accurately marked.

If bedrock, cobbles, flowing sands or other adverse or unsafe drilling conditions are encountered, drilling may continue on a time and materials basis or be terminated at the discretion of Cascade. Additional costs may apply if scope is significantly changed. Prices assume standard labor rates and no work hour restrictions. Proposal is subject to final review of terms and conditions.

Cascade will perform the Work as described in this proposal subject to the terms and conditions posted at unless MSA is already establishedhttps://cascade-env.com/resources/other/terms-and-conditions/ between Cascade and Client in which case MSA takes precedence over the aforementioned terms and conditions. By signing this proposal, Client agrees that this proposal together with the terms and conditions referenced above constitute a Subcontract. Client acknowledges that Client has received and agrees with all such documents in the form provided by Cascade. Terms and Conditions are posted and accessible at the website location set forth above.

$41,989.00Quote Total

$0.00Taxes

0.0000%Tax Percentage

$41,989.00Pre-Tax Total

Concrete Coring 1.00 LS $300.00 $300.00 https://cascade-env.com/resources/others/terms-and-conditions/ https://cascade-env.com/resources/others/terms-and-conditions/

Geophysical survey across the site (130 x 110 feet). Site Structures have been demolished. Site surface, concrete, gravel and dirt. No report deliverable required.

Selected Contractor: GeoView Associates

$4,380.00 $1,300 $2,050

BID SUMMARY - GPR QUOTES

Proposal for Supplemental Soil Sampling and Remedial Alternative Evaluation

Best Cleaners & Laundry (ERIC_5517) 224 South Florida Avenue

Deland, Volusia County, Florida

SurvTech Solutions GeoView Associates, Inc. GPRS

A Geophysical Services Company

5709 First Avenue South Tel.: (727) 209-2334

St. Petersburg, FL 33707 Fax: (727) 328-2477

March 30, 2023

Ms. Lydia Wing

Terracon

1675 Lee Road

Winter Park, FL 32789

Subject: Proposal to Perform a Utility Designation Study

Former Best Cleaners

Deland, Florida

GeoView Proposal Number: 10465p

Ms. Wing, The purpose of this letter is to transmit a proposal to complete a geophysical investigation at the subject site. This proposal is in response to your request for proposal made during your recent conversations with our office. GeoView, Inc.

appreciates the opportunity to provide our services on this project. We look forward to hearing from you soon.

Sincerely, GEOVIEW ASSOCIATES, INC.

Christopher Taylor, P.G.

Vice President

Florida Professional Geologist Number 2256

Enclosure

Proposal

This document shall serve as a proposal for work to be performed by

GeoView Associates, Inc. (GeoView) for Terracon.

Description of Site

The project site is referred to as the Former Best Cleaners and is located at

224 South Florida Avenue in Deland, Florida. The purpose of the geophysical survey will be to determine the location of underground utilities within a designated area of the project site. The location of the study area is provided on

Figure 1.

Scope of Work

The geophysical survey will be conducted using ground penetrating radar

(GPR) and conventional electromagnetic (EM) pipe and cable locators. The GPR survey will be conducted using either a Mala and/or a GSSI GPR system. The appropriate GPR antenna configuration and time range and processing parameters will be determined in the field by the project manager.

The EM survey will be performed using a Subsite 95R and/or a

Radiodetection RD (8000, 8100 or 8200) system. As appropriate, the EM survey will be conducted using both passive and active modes. The passive mode is used to find cables and conduits carrying live power (50-60 Hz) and communication

(29-33Hz) signals. For the active mode survey, a current is transmitted directly or broadcast into using electromagnetic induction a metal pipe or conduit and the path of the pipe/conduit is identified by following the signal with a portable receiver.

The active mode is used to trace out cast iron pipes, metal water and sewer lines, utilities that have trace wires, and inactive power and communication lines.

Presentation of Results

The location and estimated depths of underground utilities or any other identified structures shall be indicated on the ground surface using spray paint or other methods as specified by Terracon. No report shall be prepared.

Compensation

Cost to complete the survey will be $1300. This price is inclusive of all charges associated with the project. Unless otherwise agreed upon, GeoView shall be compensated for all services within 30 days of invoice date. GeoView shall be paid in full regardless of whether the results of the geophysical survey are what

Terracon anticipated. If it is determined during the survey that the geophysical survey will not achieve the objectives of the project, Terracon will immediately be

Wing, Lydia Highlight notified. If a decision is made to discontinue the survey, only charges for time and materials costs to that point will be submitted.

Requirements of Client

Terracon will provide a scaled map and digital file, if available, of the project site showing the boundaries of the project site, areas of specific concern and pertinent landmarks. Terracon will also supply all available information regarding the presence and history of underground utilities at the project site (see limitations for further discussion). Unless otherwise requested, Terracon will be responsible for the coordination of site access, traffic control, clearing of onsite obstructions or any other logistical consideration necessary to conduct the survey.

If any test drilling, monitor well installation or other excavation activities are planned it will be the responsibility of Terracon to submit a notification (dig ticket) to the appropriate 811 One-Call agency. It is recommended that such notification be filed sufficiently in advance so that GeoView will have the opportunity incorporate the 811 findings into their results.

Limitations

The objective of the geophysical survey is to determine the presence and configuration of underground utilities. However, the geophysical response of these features may be highly complex depending upon on the physical characteristics of the underground utilities, the electrical properties of the surrounding soils, the depth of burial of the utilities, and the proximity of the utilities to each other.

GeoView shall conduct the geophysical survey using the most “up-to-date” geophysical equipment in a manner consistent with the level of care and skill ordinarily exercised by members of the geophysical profession practicing in the same locality under similar conditions. GeoView’s utility locating personnel are all certified GPR and conventional pipe and cable locator operators with extensive in-house training.

It is acknowledged that GeoView is not an 811 Sunshine One-Call or equivalent utility mark-out service. GeoView does not have access to any utility-related records for either public or private properties. It is the responsibility of

Terracon to obtain such records and provide to GeoView prior to the site investigation. GeoView will use these records during the site investigation and report to Terracon any utilities that are shown on the site records but cannot be confirmed by GeoView. GeoView will not mark on the ground surface any utilities which it cannot confirm.

GeoView shall only be liable for the successful locating of underground utilities or any other underground structures whose presence is both known and indicated on site maps to be provided prior to the performance of the geophysical survey. Every attempt will be made to locate both known and unknown utilities within the survey area. However, GeoView will only be liable for utilities whose presence is known prior to the survey. Terracon accepts that due to the inherent limitations of non-intrusive geophysical technologies GeoView cannot be held liable for damages to utilities that cannot identified using non-intrusive technologies.

Terracon accepts that a non-intrusive utility designation study does not replace the need to employ widely accepted industry safety standards for subsurface work. Concerning the installation of well or test borings this standard of care includes post-holing or hand auguring at the planned test locations to the minimum depth at which underground utilities are anticipated at the project site. If absolute confirmation is needed to a specified depth that underground utilities are not present at a planned work location GeoView can provide vacuum excavation services. Pricing for such services is available upon request.

When Terracon is working around indicated utilities, a minimum of 2 ft clearance from either side of the marked utility will be maintained. Unless otherwise indicated, a minimum vertical clearance of +/- 20 percent of the indicated depth shall also be maintained. Terracon maintains the responsibility for manually exposing any indicated underground utility for absolute confirmation.

Authorization and scheduling of the project is considered acceptance of these terms and conditions.

Other Terms and Conditions

Per Master Services Agreement with Terracon.

Figure 1 – Project Site Location

GEOVIEW ASSOCIATES, INC.

PROPOSAL ACCEPTANCE SHEET

Project Name: Former Best Cleaners

Project Location Deland, Florida

GeoView Proposal #: 10465p

Proposal Date: March 30, 2023

Description of Services Provide Utility Designating Services

Project Cost: $1300 – see compensation page 3

Payment Terms: Per MSA

CHARGE INVOICE TO THE ACCOUNT OF:

Client: Terracon

Address: 1675 Lee Road

Winter Park, FL 32789

Attention: Lydia Wing

Phone (Office): (407) 740-6110 x23 Phone (Cell): (407) 509-3429

Email: Lydia.Wing@terracon.com

FOR APPROVAL OF CHARGES:

Firm:

Address:

Phone No.: Fax No:

Attention:

Special Instructions and/or Mutually Agreed Upon Changes to the Proposal:

In witness thereof, the parties hereto have made and executed this Agreement

Client: GeoView Associates, Inc.

Signature

By: By: Chris Taylor, P.G.

Title: Title: Vice President

Date Signed: Date Signed: March 30, 2023

General Description of Geophysical Methods

Ground Penetrating Radar (GPR)

The GPR survey will be conducted using a Mala or GSSI GPR system. The survey will be conducted with either a 500, 400 or 250 mega-Hertz antenna. The appropriate antenna will be determined in the field by the project manager. GPR will be able to provide both the position and estimated depth of both metallic and non-metallic underground utilities.

The ability of GPR to resolve a particular utility will be controlled by the following factors: 1) Depth of penetration of the GPR signal, 2) Depth of burial and diameter of the underground utility and 3) Electrical contract between the underground utility and the surrounding soils and 4) The complexity of the utility layout at the site. Due to one or a combination of these factors the GPR may not be able to identify all the utilities at the site. The diameter or composition of utilities cannot be accurately determined using GPR, though can be estimated. Estimates of burial depth are typically accurate to within +/- 20 percent, more accurate depths are possible if invert elevations for some on-site utilities are known.

Conventional Electromagnetic Pipe and Cable Locators

A Radiodetection System is used to locate underground utilities using conventional means. The system consists of a dual-function receiver and transmitter. The receiver can be operated in two modes: active and passive. In the passive mode the receiver detects the presence of underground utilities that are energized by a 60-Hertz or other known frequency. These utilities can either be those actually carrying electrical power or those utilities that are both metallic and sufficiently close to the electrical lines to have an electrical field induced within them.

In the active mode, the transmitter deliberately induces an electrical current into the utility. The frequency of this field can be varied from 512 Hertz to 200 kilohertz. The electrical field is induced using a transmitter which is either directly attached to the utility, placed on or above the utility or attached to an induction coil which is placed around the utility. Depths of underground utilities can be determined when the EM equipment is being used in the active mode. Depths are typically accurate to within 10-15 percent of the total utility depth.

10220 U.S. Highway 92 East Phone: 813-621-4929 Tampa, Florida 33610 Fax: 813-621-7194 Web: www.survtechsolutions.com Email:…