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

DC016C Completion March 30, 2026

This Task Assignment authorizes Terracon to conduct quarterly groundwater monitoring.

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

Contractor Donna Cline Contractor 904-479-7415

ERIC_4866

1911 South Adams Street, Tallahassee, Leon County

Concord Custom Cleaners #715

Contractor Contractor

✔ $ 16,146.21

$ 16,146.21

Scope of Work

Terracon Consultants, Inc.

Contractor Donna Cline

Senior Associate / Engineer

11/26/24

Digitally signed by Cline, Donna L DN: cn=Cline, Donna L, ou=General Users, email=Donna.Cline@terracon.com Date: 2024.11.26 13:23:56 -05'00'

Cline, Donna L

Jennifer Farrell

Digitally signed by Jennifer Farrell Date: 2024.11.26 11:06:19 -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 01/18

HW687

DC016C

Subtask 3: Quarterly 2 Sampling/Email Summary Report

Subtask 4: Quarterly 3 Sampling/Email Summary Report

Subtask 5: Annual Groundwater Sampling/Report

Subtask 1 & 6: IDW Disposal and project Management

Subtask 2: Quarterly 1 Sampling/Email Summary Report 03/14/2025

06/13/2025

09/12/2025

12/19/2025

03/20/2026

Subtask 2: Quarterly 1 Sampling/Email Summary Report

Subtask 3: Quarterly 2 Sampling/Email Summary Report

Subtask 4: Quarterly 3 Sampling/Email Summary Report

Subtask 5: Annual Groundwater Sampling/Report

Subtask 1 & 6: IDW Disposal and project Management

$ 3,633.52

$ 3,361.52

$ 2,941.39

$ 4,194.72

$ 2,015.06

$ 16,146.21

FLORIDA DEPARTMENT OF

Environmental Protection

Bob Martinez Center 2600 Blair Stone Road

Tallahassee, FL 32399-2400

Ron DeSantis Governor

Jeanette NNuñez Lt. Governor

Secretary

Memorandum

TO:

FROM:

Negotiation File

ERIC_

, Project Manager

SUBJECT: Negotiation Summary Task Assignment (HW687)

DATE: November , 2024

This Task Assignment authorizes Terracon Consultants, Inc. (Terracon) to conduct

FDEP COST ESTIMATE

Contractor: Terracon HW687

Date: 11/18/2024 Task #: DC016C SubTask 1 Project Management SubTask 6 IDW Disposal

Site: SubTask 2 Quarterly 1 Sampling/Email Summary Report SubTask 7 vity/Phase: Quarterly Groundwater Monitoring SubTask 3 Quarterly 2 Sampling/Email Summary Report SubTask 8

Manager: Gabriel Sostre SubTask 4 Quarterly 3 Sampling/Email Summary Report SubTask 9 SubTask 5 Annual Groundwater Sampling/Report SubTask 10

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

$78.85 Project Manager Tom Lewis 5.62 5.62 $70.14 Senior Engineer Donna Cline 9.00 0.00 2.00 2.00 2.00 3.00 0.00 $33.31 CADD Specialist Chelsea Fugate 9.00 0.00 2.00 2.00 2.00 3.00 0.00 $24.04 Environmental Tec Evan Hartwell 33.00 0.00 8.50 7.50 7.50 7.50 2.00 $26.20 Field Scientist Renee Eddins 13.00 0.00 3.00 3.00 3.00 4.00 0.00 $49.52 Senior Scientist Sid O'Neal 30.00 0.00 6.50 6.50 6.50 9.50 1.00

Total Hours 99.62 5.62 22.00 21.00 21.00 27.00 3.00 0.00 0.00

Direct Labor $3,853.63 $443.34 $811.72 $787.68 $647.40 $1,065.89 $97.60 $0.00 $0.00

Overhead 116.00% $4,470.21 $514.27 $941.60 $913.71 $750.98 $1,236.43 $113.22 $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% $2,168.17 $249.44 $456.70 $443.17 $364.25 $599.70 $54.91 $0.00 $0.00 Total Labor $10,492.01 $1,207.05 $2,210.02 $2,144.56 $1,762.63 $2,902.02 $265.73 $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 - Erwin Remediation $250.00 $0.00 $0.00 $0.00 $0.00 250.00$ $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 $250.00 $0.00 $0.00 $0.00 $0.00 $250.00 $0.00 $0.00 Handling Fee $25.00 $0.00 $0.00 $0.00 $0.00 $25.00 $0.00 $0.00 Total Subcontractor Cost $275.00 $0.00 $0.00 $0.00 $0.00 $275.00 $0.00 $0.00

Laboratory Analytical Costs $876.00 $219.00 $219.00 $219.00 $219.00 $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 $208.00 $52.00 $52.00 $52.00 $52.00 $0.00 $0.00 $0.00 Total Laboratory $1,084.00 $271.00 $271.00 $271.00 $271.00 $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 $186.00 $46.50 $46.50 $46.50 46.50$ $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) $2,260.00 $565.00 $565.00 $565.00 565.00$ $0.00 $0.00 $0.00 Equipment (IDW related) $200.00 $200.00 $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 $2,646.00 $811.50 $611.50 $611.50 $611.50 $0.00 $0.00 $0.00

Subtotal $15,097.01 $1,207.05 $3,412.52 $3,147.06 $2,765.13 $3,904.52 $660.73 $0.00 $0.00 Completion Fee $1,049.20 $120.71 $221.00 $214.46 $176.26 $290.20 $26.57 $0.00 $0.00

Total Estimated Cost $16,146.21 $1,327.76 $3,633.52 $3,361.52 $2,941.39 $4,194.72 $687.30 $0.00 $0.00

Concord Custom Cleaners #715

REV: 02/03 CEF TERRACON Page 1

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Concord Custom Cleaners #715 SUBTASK 2: Quarterly 1 Sampling/Email Summary Report

PROPOSAL NO. PHF247149

DATE: 11/18/2024

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Scientist SO Verification of property ownership, notify responsible parties of field activities 1.0 Senior Scientist SO 2.5

Field Activities Environmental Technician EH Obtain IDW Drums 1.00 Environmental Technician EH Load/unload equipment (1 hr./day) 1.00 Environmental Technician EH Mob/Demob from Site (1 hr./day) 1.00 Environmental Technician EH DTW collection, pre an post equipment calibration 2.00 Environmental Technician EH Groundwater sampling 3 wells (1 well/hour) 3.00 Environmental Technician EH Containerize purge water in IDW drum 0.50

Reporting - Email Deliverable Field Scientist RE 3.00 Senior Scientist SO 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: EH SO RE DC CF Hours: 8.50 6.50 3.00 2.00 2.00 TOTAL LABOR 22.00

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 $219.00 Sample Shipping Small Cooler (2 day) 52.00$ 1 $52.00

TOTAL LAB $271.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

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

Tubing, HDPE 0.30$ ft 500 150.00$ IDW New 55-gallon Drum 100.00$ each 2 200.00$

TOTAL EQUIPMENT 811.50$

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

Prepare updated tables and draft maps

SUBTASK 3: Quarterly 2 Sampling/Email Summary Report

PROPOSAL NO. PHF247149

DATE: 11/18/2024

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Scientist SO Verification of property ownership, notify responsible parties of field activities 1.0 Senior Scientist SO 2.5

Field Activities Environmental Technician EH Load/unload equipment (1 hr./day) 1.00 Environmental Technician EH Mob/Demob from Site (1 hr./day) 1.00 Environmental Technician EH DTW collection, pre an post equipment calibration 2.00 Environmental Technician EH Groundwater sampling 3 wells (1 well/hour) 3.00 Environmental Technician EH Containerize purge water in IDW drum 0.50

Reporting - Email Deliverable Field Scientist RE 3.00 Senior Scientist SO 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: EH SO RE DC CF Hours: 7.50 6.50 3.00 2.00 2.00 TOTAL LABOR 21.00

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 $219.00 Sample Shipping Small Cooler (2 day) 52.00$ 1 $52.00

TOTAL LAB $271.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

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

Tubing, HDPE 0.30$ ft 500 150.00$ IDW Drum (Use existing drums) 100.00$ each 0 -$

TOTAL EQUIPMENT 611.50$

Prepare updated tables and draft maps

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

SUBTASK 4: Quarterly 3 Sampling/Email Summary Report

PROPOSAL NO. PHF247149

DATE: 11/18/2024

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Scientist SO Verification of property ownership, notify responsible parties of field activities 1.0 Senior Scientist SO 2.5

Field Activities Environmental Technician EH Load/unload equipment (1 hr./day) 1.00 Environmental Technician EH Mob/Demob from Site (1 hr./day) 1.00 Environmental Technician EH DTW collection, pre an post equipment calibration 2.00 Environmental Technician EH Groundwater sampling 3 wells (1 well/hour) 3.00 Environmental Technician EH Containerize purge water in IDW drum 0.50

Reporting - Email Deliverable Field Scientist RE 3.00 Senior Scientist SO 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: EH SO RE DC CF Hours: 7.50 6.50 3.00 2.00 2.00 TOTAL LABOR 21.00

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 $219.00 Sample Shipping Small Cooler (2 day) 52.00$ 1 $52.00

TOTAL LAB $271.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

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

Tubing, HDPE 0.30$ ft 500 150.00$ IDW Drum (Use existing drums) 100.00$ each 0 -$

TOTAL EQUIPMENT 611.50$

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

SUBTASK 4: Annual Groundwater Sampling/Report

PROPOSAL NO. PHF247149

DATE: 11/18/2024

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Scientist SO Verification of property ownership, notify responsible parties of field activities 1.0 Senior Scientist SO 2.5

Field Activities Environmental Technician EH Load/unload equipment (1 hr./day) 1.00 Environmental Technician EH Mob/Demob from Site (1 hr./day) 1.00 Environmental Technician EH DTW collection, pre an post equipment calibration 2.00 Environmental Technician EH Groundwater sampling 3 wells (1 well/hour) 3.00 Environmental Technician EH Containerize purge water in IDW drum 0.50

Reporting - Annual Groundwater Monitoring Report Field Scientist RE 4.00 Senior Scientist SO Prepare Annual Groundwater Monitoring Report 6.00 Senior Engineer DC Provide report email conclusions and recommendation 3.00 CADD Specialist CF Prepare Exhibits (groundwater flow and concentrations maps) 3.00

Personnel: EH SO RE DC CF Hours: 7.50 9.50 4.00 3.00 3.00 TOTAL LABOR 27.00

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 $219.00 Sample Shipping Small Cooler (2 day) 52.00$ 1 $52.00

TOTAL LAB $271.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

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

Tubing, HDPE 0.30$ ft 500 150.00$ IDW Drum (Use existing drums) 100.00$ each 0 -$

TOTAL EQUIPMENT 611.50$

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

SUBTASK 5: IDW Disposal

PROPOSAL NO. PHF247149

DATE: 11/18/2024

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Coordinate IDW T&D - Drilling & Purge water IDW Senior Scientist SO 1.00 Field Techinician EH 2.00

Personnel: SO EH Hours: 1.00 2.00 TOTAL LABOR 3.00

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

Erwin Remediation 125.00$ drum 2 250.00$

TOTAL SUBCONTRACTOR 250.00$

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

3559 Timberlane School Road Tallahassee, FL 32312

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

Terracon.com

November 14, 2024

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 Quarterly Groundwater Monitoring Concord Custom Cleaners #715 1911 South Adams Street Tallahassee, Leon County, Florida

ERIC_4866

Contract No. HW687 Terracon Proposal No. PHF247149

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 quarterly groundwater monitoring. Each groundwater sampling event will be summarized in a quarterly groundwater monitoring report serving as deliverables.

Scope of Services

Conduct four (4) quarterly groundwater monitoring events to include analysis of three (3) groundwater monitoring wells:

MW001R, MW003, and MW009. Additionally, a depth-to-water measurement will be collected from monitoring well MW007 to assess groundwater flow direction.

Prepare three (3) quarterly email summary reports and one (1) annual groundwater monitoring report for the final sampling event.

See attached LOE for details

Schedule Deliverables: Three (3) quarterly email summary reports and one

(1) annual groundwater monitoring report within 20 business days following receipt of each quarterly laboratory result.

Compensation See attached CEF for details.

SITE BACKGROUND AND RECOMMENDATIONS

The former Concord Custom Cleaners #715 is located at 1911 South Adams Street, Tallahassee, Leon County, Florida. The former drycleaner is located south of downtown Tallahassee, in a commercial area. The facility is adjoined by commercial businesses. The former Concord Custom Cleaners #715 operated as a drycleaning facility. Since closure of drycleaning operations, the site has operated under

Proposal for Quarterly Groundwater Monitoring Concord Custom Cleaners #715, ERIC_4866 ■ Tallahassee, FL November 14, 2024 ■ Terracon Proposal No. PHF247149 several fast-food restaurant entities. During Terracon’s site visit in March 2024, the site was observed vacant of occupants.

From June 1989 to January 1999, drycleaning operations conducted at the site included the use of tetrachloroethene (A.K.A. perchloroethylene, abbreviated PCE or PERC). In 1999 the site was converted to a drop-off operation. On September 23, 1998, the Florida Department of Environmental Protection (FDEP) Drycleaning Solvent Cleanup Program (DSCP) received an application for state funded cleanup. On November 30, 1998, the site was found eligible for cleanup under DSCP and scored a 121.

Contamination assessment work was conducted from August 2002 to November 2002 by MACTEC, who also conducted an initial Remedial Alternatives Evaluation recommending soil excavation and monitored natural attenuation. In January 2004, Golder collected additional soil sampling and slug testing. A Soil Remedial Action Plan/Excavation Work Plan was submitted on June 10, 2005 and approved by DSCP on March 8, 2006. In August of 2006, approximately 75 tons of contaminated soil was removed from beneath the facility floor slab. A soil vapor extraction (SVE) system was installed consisting of ten (10) vertical vapor extraction wells and began on November 20, 2006. Six (6) SVE wells were installed under the facility floor slab and four SVE wells were installed on the southwest side of the building that formerly housed the drycleaning operation. The SVE system was shut down on September 30, 2008 with an estimated contaminant mass recovery of 3.8 lbs.

Annual groundwater assessment of the site was initiated in March of 2010 and continued through March of 2020 by Golder and then Tetra Tech. In May 2017, Tetra Tech installed a 70-ft deep monitoring well (MW009) along the north boundary to establish a downgradient point of compliance on the property. Overall results of these events have had exceedances above the FDEP Groundwater Cleanup Target Levels (GCTLs) of Chapter 62-777, F.A.C. for PCE in monitoring wells MW001, MW003 (offsite), MW004 (offsite), and MW009 that have trended downward. MW001 was destroyed after the 2017 sampling event. During the March 2020 annual groundwater sampling event, only offsite monitoring well MW003 exceeded the FDEP GCTL for PCE.

In September of 2022, Terracon collected groundwater samples from five (5) shallow monitoring wells (MW003, MW004, MW006, MW008, and MW009) and analyzed them for volatile organic halocarbons (VOHs) by Environmental Protection Agency (EPA) Method 8260B for continued monitoring of the previously identified groundwater plume. Depth to water (DTW) measurements were also collected from six (6) monitoring wells (MW003, MW004, MW006, MW007, MW008, and MW009) to evaluate groundwater flow characteristics at the site. Groundwater flow was determined to be to the northeast.

During this event, monitoring wells MW001, MW002, and DW001 were not located and determined to be destroyed. The drycleaning COIs were reported above the FDEP GCTLs of Chapter 62-777, F.A.C.

for PCE in the shallow monitoring well MW003 [(9.2 micrograms per liter (μg/L)]. All other drycleaning COIs for the sampled shallow monitoring wells were either below the FDEP GCTLs and/or laboratory detection limits.

On March 4, 2024, Walker-Hill Environmental, Inc. under the supervision of Terracon personnel installed replacement monitoring well MW001R to fifty-nine (59) below ground surface (bgs) with ten feet of 0.010-inch slotted screen.

On March 6, 2024, groundwater samples were collected from three (3) shallow monitoring wells (MW001R, MW003, and MW009). Groundwater flow at the site in the shallow wells ranges to the north and east. drycleaning COIs were reported above the FDEP GCTL of 3.0 μg/L for PCE in the shallow monitoring well MW003 at 6.1 μg/L.

Proposal for Quarterly Groundwater Monitoring Concord Custom Cleaners #715, ERIC_4866 ■ Tallahassee, FL November 14, 2024 ■ Terracon Proposal No. PHF247149

Terracon recommends performing quarterly groundwater monitoring events to complete the requirements for Florida Administrative Code Rule 62-780.750(4)(f).

SCOPE OF WORK

Conduct four (4) four quarterly groundwater sampling events for laboratory analysis of three (3) groundwater monitoring wells (MW001R, MW003, MW009). Collect depth-to-water measurement from monitoring well MW007 to assess groundwater flow direction. Prepare quarterly monitoring reports for each sampling event.

The intention of this proposal is to perform quarterly monitoring of 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) Florida Administrative Code).

DELIVERABLES

Three (3) quarterly email summary reports and one (1) annual groundwater monitoring 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.

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.

Sid O’Neal Donna Cline, P.E.

Project Manager Senior Associate / Engineer

Attachments: Cost Spreadsheet Level of Effort

Formula Sheet

Project Management Subtask 1 Subtask 2 Subtask 3 Subtask 4 Subtask 5 Subtask 6 Subtask 7 Subtask 8 Subtask 9 Subtask 10

Labor Costs $443.14 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $140.28 $140.28 $0.00 $210.42 $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 $66.62 $66.62 $66.62 $99.93 $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

$204.34 $180.30 $180.30 $180.30 $48.08 $0.00 $0.00 $0.00 $0.00 $78.60 $78.60 $78.60 $104.80 $0.00 $0.00 $0.00 $0.00 $0.00

$321.88 $321.88 $321.88 $470.44 $49.52 $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 $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 $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 $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 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 total labor dol $443.14 $811.72 $787.68 $647.40 $1,065.89 $97.60 $0.00 $0.00 $0.00 $0.00

Project Management $3,410.29 = sum of Direct Labor Costs from Subtasks 2 through 10 $443.34 =13% of Direct Labor Costs (Project Management)

5.623 = Hours of Project Management (based on hourly salary of the Contractor Project Manager)

Subcontractor $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Handling Fee $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 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Service Fee $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 $25.00 $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 $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 $25.00 $0.00 $0.00 $0.00 $0.00

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408 Ditmar Street Pensacola, FL 32503

To: Mr. Sid O’Neal Terracon 3559 Timberlane School Road Tallahassee, Florida 32312

May 22, 2024

Re: Drum Disposal – Chlorinated Solvents

Mr. O’Neal:

The price for the transportation and disposal (T&D) of 55-gallon drums of non-hazardous soil and water impacted with chlorinated solvents is listed below:

Description Rate Unit

T&D – Non-Hazardous Soil Impacted with Chlorinated Solvents $110.00 Per Drum T&D – Non-Hazardous Water Impacted with Chlorinated Solvents $125.00 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.

Please contact me if you have any additional questions.

Respectfully, Robert Donado Erwin Remediation, Inc.

Email: Robert@erwinremediation.com p y

R b t D d

Whatever Waste, LLC 3834 Mandarin Woods Dr. No.

Jacksonville, FL 32223 United States 904.881.1957

Rachael Greller Staff Scientist Terracon 1675 Lee Road Winter Park 32789 United States

Proposal Number 033023.1

Overview RE: Drycleaner Waste Drum Cleanup Program Non-haz IDW Drum Transport & Disposal LOC: Statewide including Florida Keys

Good day Ms. Greller, Whatever Waste is pleased to provide non-haz IDW soil and water drum transport & disposal services to you and Terracon in regions throughout Florida including the Keys

Pricing

Notes

Proposal Date 03/30/2023

Description Rate Qty Line Total

North Region: NH IDW Soil & Water 55-gallon drums - each (No Stop Fee)

$140.00 1 $140.00

Central Region:NH IDW Soil & Water 55-gallon drums - each (South of Ocala; North of Sarasota/Port St. Lucie) (Stop fee $150; 2 drums or less)

$140.00 1 $140.00

South Region: NH IDW Soil & Water 55-gal drums - each (South of Sarasota/Port St. Lucie) (Stop fee $200; 2 drums or less)

$225.00 1 $225.00

Florida Keys: NH IDW Soil & Water 55-gal drums - each (Stop Fee - $250)

$275.00 1 $275.00

Subtotal

Tax

780.00

0.00

Proposal Total (USD) $780.00

Whatever Waste will assist with IDW profiling and require VOCs, and RCRA 4 metals for IDW drycleaner site soils; and VOCs only for IDW drycleaner site water.

DOT shippable drums at each location must be accessible in one area and on a hard surface.

No-load run charges to locations if called off in transit or upon arrival would be the stop fee in Central, South Regions and the Keys. In the North Region the no-load charge would be $100.

Terms

Actual amounts will be invoiced unless minimum quantities and associated fees apply Rates under contract are valid for 6 months Payment terms are 30 days after receiving emailed invoice with associated documents

Indemnification: Each party agrees to indemnify, defend and hold harmless each other for and from any loss or liability arising out of the party's breach of this agreement except for gross negligence, willful misconduct or bad faith.

Capitol 200 Biddle Ave, Suite 205

Environmental Newark, DE 19702

Services, Inc. 302-380-3737 www.capitolenv.com

EXPERTISE SUSTAINABILITY SOLUTIONS

Rachael Greller Terracon 3-28-2023 1675 Lee RD Winter Park FL 32789

Scope of Work: Provide transportation and disposal of Non Hazardous drill cuttings, and Purged waters. Drums to be located on a hard surface for loading, or additional charges could apply. Quote good for sites in Central FL North areas. With approved profile and analytical.

DESCRIPTION

Estimated Quantity

UM Price $ Total $

Drill cuttings from drilling operation solids 30 drums Per Drum $140.00

Drums Purge waters ( 55 GL drum ) 30 drums Per Drum $135.00

Additional loading time after 1-hour site. Per Hour $155.00

Actual time

Rachael, I appreciate the opportunity to submit this proposal and hope that Capitol Environmental Services, Inc. can be of service to Terracon. Should you require additional information, or have any questions at all, please do not hesitate to contact me at 813-613-0452 Manderson@capitolenv.com

Sincerely Yours, Mike Anderson www.capitolenv.com