CN-370000-HW687-DC027D.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

DC027D Completion September 11, 2026

This Task Assignment authorizes Terracon Consultants Inc. (Terracon) to conduct Annual Groundwater Monitoring for VOHs and PFAS at the Carriage Trade Dry Cleaners site as part of contract HW687.

Gabriel Sostre 850-245-8749 Contractor Contractor

Contractor Contractor

Contractor Contractor

Contractor

Terracon Consultants, Inc.

Terracon Consultants, Inc.

Donna Cline 904-479-7415

ERIC_4799

3944 West Hillsborough Avenue, Hillsborough County, Tampa

Carriage Trade Dry Cleaners

✔ $ 7,343.45

$ 7,343.45

Scope of Work

Donna Cline

Senior Associate

5/11/2026

Digitally signed by Cline, Donna L DN: cn=Cline, Donna L, ou=Domain Users, email=Donna.Cline@terracon.com Date: 2026.05.11 13:28:51 -04'00'

Cline, Donna L

Mubeen Darji

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

Date: 2026.05.11 11:32:39 -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

DC027D

Subtask 3: PFAS Sampling Deliverable

Subtasks 1 & 2: Project Management; Annual Groundwater Monitoring Report 08/07/2026

08/07/2026

Subtasks 1 & 2: FDEP approval of Project Management; Annual Groundwater Monitoring Report

Subtask 3: FDEP approval of PFAS Sampling Deliverable

$ 4,496.56

$ 2,846.89

$ 7,343.45

McGrane_P Rectangle

Memorandum

TO:

FROM:

SUBJECT:

DATE:

Negotiation File Carriage Trade Dry Cleaners 3944 West Hillsborough Avenue Tampa, Hillsborough County

ERIC_4799

Gabriel Sostre, Project Manager

Negotiation Summary Task Assignment DC027D (HW687)

April 29th, 2026

This Task Assignment authorizes Terracon Consultants Inc. (Terracon) to conduct Annual Groundwater Monitoring for VOHs and PFAS at the Carriage Trade Dry Cleaners site as part of contract HW687. Below is a summary of each subtask related to this TA:

Subtask 1: Reserved for Project Management.

Subtask 2: Terracon shall conduct VOH Groundwater Sampling of one Monitoring Well (MW002I).

Terracon shall also prepare an Annual Groundwater Monitoring Report detailing their findings obtained during the Annual Groundwater Sampling event.

Subtask 3: Terracon shall conduct combined Groundwater Sampling for PFAS and obtain samples for analysis from five different wells (MW001S, MW003S, PZ001, PZ002, and PZ004). Terracon shall also prepare a PFAS deliverable that details the findings obtained during the combined Groundwater Sampling event.

The previous total cost of this TA was $7,755.11. After negotiations with the DEP, the new total cost has been lowered to $7,343.45. This represents a decrease in the cost of the TA by $411.66 or 5.31%. The total amount of labor hours dedicated to this TA is 46.12. Terracon may invoice according to included schedule.

FDEP COST ESTIMATE

Contractor: Terracon

Date: 4/29/2026

Task #: HW687 SubTask 1 Project Management

Site: Carriage Trade Dry Cleaners SubTask 2 VOH Groundwater Sampling

Activity/Phase: Annual Groundwater Sampling SubTask 3 PFAS Sampling

Project Manager: Gabriel Sostre SubTask 4

SubTask 5

Totals 1 2 3 4 5

Labor Rate Category

$56.73 Project Manager Fabio Fortes 4.12 4.12

$36.06 CADD Specialist Chelsea Fugate 3.00 2.00 1.00 0.00 0.00

$56.73 Senior Engineer Fabio Fortes 8.00 5.00 3.00 0.00 0.00

$39.90 Senior Scientist Eric Clementelli 31.00 17.50 13.50 0.00 0.00

Total Hours 46.12 4.12 24.50 17.50 0.00 0.00

Direct Labor $2,032.78 $233.86 $1,054.02 $744.90 $0.00 $0.00

Overhead 116.00% $2,358.02 $271.28 $1,222.66 $864.08 $0.00 $0.00

Gen & Admin 0.00% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Fringe 56.263% $1,143.70 $131.58 $593.02 $419.10 $0.00 $0.00

Total Labor $5,534.50 $636.72 $2,869.70 $2,028.08 $0.00 $0.00

Travel

Vehicle Rental $240.00 120.00$ 120.00$ $0.00 $0.00

Mileage Costs $0.00 $0.00 $0.00 $0.00 $0.00

Air Fare $0.00 $0.00 $0.00 $0.00 $0.00

Per diem + Hotel $0.00 $0.00 $0.00 $0.00 $0.00

Total Travel $240.00 120.00$ $120.00 $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

Subcontractor Subtotal $0.00 $0.00 $0.00 $0.00 $0.00

Procurement Fee $0.00 $0.00 $0.00 $0.00 $0.00

Total Subcontractor Cost $0.00 $0.00 $0.00 $0.00 $0.00

Subcontractor (Services Procurement)

Drilling (Conventional) $0.00 $0.00 $0.00 $0.00 $0.00

Drilling (Non-conventional) $0.00 $0.00 $0.00 $0.00 $0.00

Mobile Laboratory $0.00 $0.00 $0.00 $0.00 $0.00

Surveying $0.00 $0.00 $0.00 $0.00 $0.00

IDW $0.00 $0.00 $0.00 $0.00 $0.00

Utilities $0.00 $0.00 $0.00 $0.00 $0.00

Initiation Fee $0.00 $0.00 $0.00 $0.00 $0.00

Petrotech $310.00 $0.00 310.00$ $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 $310.00 $0.00 $310.00 $0.00 $0.00

Handling Fee $31.00 $0.00 $31.00 $0.00 $0.00

Total Subcontractor Cost $341.00 $0.00 $341.00 $0.00 $0.00

Laboratory

Analytical Costs $183.00 183.00$ $0.00 $0.00 $0.00

Fast Turnaround Charges $0.00 $0.00 $0.00 $0.00 $0.00

Sample Shipping $0.00 -$ $0.00 $0.00 $0.00

Total Laboratory $183.00 $183.00 $0.00 $0.00 $0.00

Field Expenses

Personal Protection $0.00 $0.00 $0.00 $0.00 $0.00

Expendables $59.50 46.50$ 13.00$ $0.00 $0.00

Equipment (Drilling related) $0.00 $0.00 $0.00 $0.00 $0.00

Equipment (Analytical related) $290.00 290.00$ $0.00 $0.00 $0.00

Equipment (IDW related) $100.00 $0.00 100.00$ $0.00 $0.00

Equipment (Other) $42.00 $0.00 42.00$ $0.00 $0.00

Total Field Expenses $491.50 $336.50 $155.00 $0.00 $0.00

Subtotal $6,790.00 $636.72 $3,509.20 $2,644.08 $0.00 $0.00

Completion Fee $553.45 $63.67 $286.97 $202.81 $0.00 $0.00

Total Estimated Cost $7,343.45 $700.39 $3,796.17 $2,846.89 $0.00 $0.00

REV: 02/03 CEF TERRACON Page 1

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Carriage Trade Dry Cleaners SUBTASK 2: VOH Groundwater Sampling Proposal No PH4267131

DATE: 4/29/2026

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning Groundwater Sampling Senior Scientist EC 1.00 Senior Engineer FF 1.00

Groundwater Sampling

Senior Scientist EC Load/Unload and Check Equipment Calibration, pick up drum for IDW 1.00

Senior Scientist EC Mobilization/Demobilization (from Tampa) 1.50

Senior Scientist EC Collect Water Levels From 6 Monitoring Wells @ 10 Minutes Per Well 1.00

Senior Scientist EC Collect 1 VOH Groundwater Sample (MW002I) 1.50

Senior Scientist EC Collect IDW sample 0.50

Senior Scientist EC Field Documents Organization 1.00

Report Deliverable

Senior Scientist EC Prepare Report Tables, Draft Groundwater Elevation and Analytical Isoconcentration Figures 3.00

Senior Scientist EC Prepare Report 6.00

Senior Engineer FF Senior QA/QC of Field Operations and Laboratory Data 2.00

Senior Scientist EC Summarize Groundwater Analytical Results 1.00

Senior Engineer FF Conclusions and Reccomendations 2.00

CADD Specialist CF Prepare Figures and Exhibits 2.00

EC FF CF

Hours: 17.50 5.00 2.00 TOTAL LABOR 24.50

VEHICLE TYPE RATE UNIT USEAGE

Truck Sampling 120.00$ day 1 120.00$

TOTAL VEHICLE 120.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC* #IDW TOTALS

Halocarbons (short list) EPA 8260 73.00$ 1 0 0 73.00$ VOCs (full list) EPA 8260 110.00$ 0 0 1 110.00$

TOTAL 183.00$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$ Ice (Sample preservation) 6.50$ Bag 1 6.50$

Analytical Related Shallow Groundwater Sampling Kit 290.00$ day 1 290.00$

TOTAL EQUIPMENT 336.50$

Request Sample Kit, Pre-Task Planning, Project Kick-Off, Prepare Field Sampling and Field Work Request Project Kick-Off, Contact with Onsite Property Owner and FDEP for Field Activities Schedule

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Carriage Trade Dry Cleaners - ERIC_4799 SUBTASK 3: PFAS Sampling Proposal No PH4267131

DATE: 4/28/2026

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERRLN

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning Groundwater Sampling

Senior Engineer FF 1.00

Groundwater Sampling Senior Scientist EC 7.50 Senior Scientist EC Containerize IDW, collect IDW sample Coordinate Drum Storage w/Current Tenant 0.50

Senior Scientist EC 0.50

Email Deliverable for PFAS Sampling Senior Scientist EC Tabulate PFAS Data / Evaluate and Summarize Groundwater Analytical Results 3.00

Senior Engineer FF Conclusions and Recommendations for PFAS Analysis 1.00

CADD Specialist CF Prepare PFAS Exhibit (Showing PFOA, PFOS and PFOA+PFAS for Each Well) 1.00

IDW Coordination

Senior Engineer FF Prepare IDW Waste Characterization/Generator Profile 1.00

Senior Scientist EC Mobilization and Coordinate IDW T&D Meet Transporter Onsite 2.00

EC DC FF CF

Hours: 13.50 0.00 3.00 1.00 TOTAL LABOR 17.50

VEHICLE TYPE RATE UNIT USEAGE

Truck IDW Pick Up 120.00$ day 1 120.00$

TOTAL VEHICLE 120.00$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

IDW Disposal 310.00$ Drum 1 310.00$

TOTAL 310.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC* #IDW TOTALS

PFAS Analysis FDEP Laboratory -$ 5 1 -$

(MW001S, MW003S,PZ001, PZ002, PZ003, PZ004, IDW-1)

Sample Shipping Large Cooler -$

TOTAL LAB -$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 0 -$ Ice 6.50$ Bag 2 13.00$

IDW 55-gallon drum, new 100.00$ drum 1 100.00$

Others Tubing, HDPE 0.30$ ft 100 30.00$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 4 12.00$

TOTAL EQUIPMENT 155.00$

Request Sample Kit, Coordinate Lab Availability

Collect 5 PFAS Groundwater Samples (1.5 hr/well x 5 wells)

Package Samples for Shipment To FDEP Lab / Delivery Confirmation

5463 W. Waters. Ave. Suite 830 Tampa, FL 33634

P (813) 221-0050 F (813) 221-0051

Terracon.com

April 28, 2026

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

Attn: Mr. Gabriel Sostre, Environmental Specialist II E: Gabriel.Sostre@floridadep.gov W: 850-245-8749

Re: Proposal for Annual Groundwater Monitoring Carriage Trade Dry Cleaners 3944 West Hillsborough Avenue Tampa, Hillsborough County, Florida 33614

ERIC_4799

Waste Cleanup Contract No. HW687 Terracon Proposal No. PH4267131

Dear Mr. Sostre:

Terracon Consultants, Inc. (Terracon) appreciates the opportunity to submit this proposal to the Florida Department of Environmental Program (FDEP) Waste Cleanup Program (WCP) to conduct combined volatile organic halogenated (VOHs) and per-and polyfluorinated substances (PFAS) groundwater sampling at the Carriage Trade Dry Cleaners (ERIC_4799) site located in Tampa, Florida.

Scope of Services

Mobilization to site, collection of depth to groundwater measurements from 6 shallow monitoring wells. Perform groundwater sampling of 1 intermediate monitoring well for VOH analysis and 5 shallow monitoring wells for PFAS analysis to evaluate concentration trends and ascertain groundwater flow.

Properly manifest the groundwater drum of investigative-derived waste (IDW).

Submit PFAS samples in cooler preserved on ice by overnight courier to FDEP’s laboratory for sample analysis.

Proposal for Annual Groundwater Sampling Carriage Trade Dry Cleaners ERIC_4799 ■ Tampa, FL April 28, 2026 ■ Terracon Proposal No. PH4267131

Review data and prepare a Groundwater Monitoring Report including updated tables, groundwater flow, and concentration exhibits.

Schedule Deliverable Annual Groundwater Monitoring Report submitted within 20 business days following receipt of laboratory results.

Compensation See attached CEF for details.

SITE RECOMMENDATIONS

Terracon performed groundwater sampling from seven onsite groundwater monitoring wells in July 2025 for analysis of VOHs and PFAS. Based on the results of the 2025 Groundwater Monitoring report, concentration of 1,1-dichloroethene (1,1-DCE) in MW002I was the only VOH compound reported above its respective groundwater cleanup target level (GCTL).

Historically, PFAS have been reported at concentrations above the provisional GCTL of 70 nanograms per liter (ng/L) for Perfluorooctanoic acid (PFOA), Perfluorooctane sulfonic acid (PFOS), and their sum (PFOA + PFOS) in the shallow monitoring wells. Furthermore, monitoring wells PZ004, MW001S, and MW003S presented the sum of PFOA and PFOS at a concentration above 300 ng/L.

Based on James Dalton’s recommendation (email dated April 23, 2025) and FDEP’s memorandum from June 19, 2025, Terracon should continue groundwater monitoring at monitoring well MW002I only to evaluate the 1,1-DCE concentration trends. Additionally, PFAS analysis should continue on onsite shallow monitoring wells MW001S, MW003S, PZ001, PZ002, and PZ004. Terracon recommends removing the shallow monitoring well PZ003 from the groundwater sampling event since the sum of PFOA and PFOS concentration has been below the PGCTL since 2023. Further assessment for PFAS delineation should be conducted at a later time.

DELIVERABLES

The Groundwater Monitoring Report will detail and summarize the groundwater sampling activities, field observations, and results of monitoring well analysis and will include equipment calibration logs, groundwater sampling logs, IDW disposal documentation, updates to the site’s historical data tables, and updated exhibits of groundwater flow and concentrations. Conclusions and recommendations will include a summary of results and recommendations for future sampling, closure, or remedial activities. The PFAS results and evaluation will be provided in an additional section within this report.

Proposal for Annual Groundwater Sampling Carriage Trade Dry Cleaners ERIC_4799 Tampa, FL April 28, 2026 Terracon Proposal No. PH4267131

SCHEDULE

It is estimated that the wells could be sampled within two weeks from TA authorization and report issued within 20 business days of receipt of analytical data.

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 at 813-221-0050.

Sincerely, Terracon Consultants, Inc.

Fabio Fortes, P.E. Donna Cline, P.E.

Senior Engineer Senior Associate

Attachments: Cost Spreadsheet Level of Effort Investigation Derived Waste (IDW) bid evaluation and quotes

FDEP Waste Cleanup Program

COMPETITIVE BID WORKSHEET

Project Name/Address: Carriage Trade Dry Cleaners ERIC_4799 - 3944 West Hillsborough Avenue, Tampa, Hillsborough County, FL 4/15/2026

Detailed description of goods or services required (including total quantity, size, delivery requirements, and all other specifications):

Vendor Name: Quantity Units Contact Name: Jason Yates Frank Colosi Marco Sapone Contact Number: (407)-656-8114 (689) 319-2247 (386)-530-9891

Written Quote (yes/no): Yes Yes Yes Telephone Quote (yes/no): No No No

T&D of Non-Haz PFAS Impacted Water 1 Per Drum 225.00$ 225.00$ $ 137.00 $ 137.00 110.00$ 110.00$ T&D of Non-Haz PFAS Impacted Soil 0 Per Drum 225.00$ -$ $ 207.00 $ - 90.00$ -$ Stop Fee 1 Per Stop 85.00$ 85.00$ $ 350.00 218.00$ Handling/Drop Fees: 254.00$ 145.00$

TOTAL COST: 310.00$ 741.00$ 473.00$

VENDOR SELECTED: Petrotech Southeast, Inc Basis of Selection: Lowest bid

Provide transportation and disposal of Non-Hazardous PFAS water. One drums is estimated for this scope of work.

Petrotech Southeast, Inc Clean Earth, Inc. Republic Services

23800 County Road 561, Astatula, FL 34705 407-656-8114 352-343-2635 (fax) www.petrotechse.com

September 5, 2024

Fabio Fortes Terracon 1675 Lee Rd Winter Park Fl 32789 321-347-3196 Email: fabio.fortes@terracon.com

RE: Drum Disposal – PFAS-Impacted Soil and Water

Dear Mr. Fortes:

Thank you for the opportunity to quote this project. Per your request, please find our proposal for the services you require.

Description of work: Petrotech Southeast Inc. will provide the equipment and personnel to transport and dispose of drums of non-hazardous PFAS/PFOS impacted groundwater and non-hazardous PFAS/PFOS impacted soil in Tampa, Florida. All drums must staged on a concrete or asphalt surface and accessible by a commercial box truck. The pricing below is based on normal working hours, M-F, 7:00 AM – 5:00 PM.

Service Est. Qty Unit Type Unit Price Est. Total

Disposal of Non-Haz PFAS-Impacted Water 3 Drum $225.00 $675.00

Disposal of Non-Haz PFAS-Impacted Soil 1 Drums $225.00 $225.00 Stop Fee - Tampa 3 Each $85.00 $255.00

$1,155.00

Pricing above is contingent upon approval or the waste profile and waste material by the receiving facility. Generator waste profiles must be approved prior to scheduling the transportation. Any delays on site will be billed at $190/hour. This pricing is contingent upon approval and acceptance of the waste (as profiled) by the receiving facilities.

Thank you for the opportunity to work with you on this project. If you have any questions or concerns with this proposal, please do not hesitate to call me.

Thank You, Jason Yates Vice President http://www.petrotechse.com/ mailto:fabio.fortes@terracon.com

23800 County Road 561, Astatula, FL 34705 407-656-8114 352-343-2635 (fax) www.petrotechse.com

Petrotech Southeast, Inc.

TERMS AND CONDITIONS

BILLING AND PAYMENT: Unless otherwise indicated in the proposal, Petrotech Southeast, Inc. billing will be based on accrued time, test costs and expenses. Client agrees to pay invoice upon receipt. Should payment not be received within 10 days, the amount due shall bear a service charge of 1½ per cent per month or 18 percent per year and the cost of collection, including reasonable attorneys’ fees, if collected by law through an attorney. If the Client has any objection to any invoice or part thereof submitted by Petrotech Southeast, Inc., he shall so advise us in writing giving his reasons within 14 days of receipt of such invoice. If the project is terminated in whole or in part then Petrotech Southeast, Inc. shall be paid for services performed prior to receiving notice of such termination, in addition to Petrotech Southeast, Inc. reimbursable expenses and any shut down costs incurred. Shut down costs may, at Petrotech Southeast, Inc.’s sole discretion, include completion of analyses and records necessary to document our files and protect our professional reputation. In the event that Petrotech Southeast, Inc. agrees to pay for a recyclable product, the price paid for that product shall be based on current market conditions and may be subject to change.

LIABILITY: Petrotech Southeast, Inc. maintains worker’s compensation and employer’s liability insurance for our employees as required by state laws. In addition we maintain comprehensive general liability, pollution liability, and vehicle liability insurance with limits of $1,000,000.00. A certificate of insurance can be supplied evidencing such coverage. We will not be liable or responsible for any loss, damage or liability beyond amounts limits, coverage or conditions of such insurance specified above.

GALLONAGE: The amount of material to be treated and disposed of by Petrotech Southeast, Inc. and paid for by the Client shall be determined by Petrotech Southeast, Inc. utilizing metered removal, gauging, or physical measurement.

HAZARDOUS SUBSTANCES AND CONSTITUENTS: Client agrees to advise Petrotech Southeast, Inc. upon execution of this agreement of any hazardous substances or any condition existing in, on or near the site presenting a potential danger to human health, the environment or equipment. Client agrees to provide continuing information, as it becomes available to the attention of the Client in the future.

EXCLUSIVITY: Upon execution of this agreement, Client agrees to exclusively use Petrotech Southeast, Inc. for all services and products described in this agreement

UNFORESEEN OCCURRENCES: If during the performance of services, any unforeseen hazardous substances or constituents or other unforeseen conditions or occurrences are encountered which, in Petrotech Southeast, Inc.’s judgment significantly affect or may affect the services, the risk involved in providing the services or the recommended scope of services, we will promptly notify the Client thereof. Subsequent to that notification, Petrotech Southeast, Inc. may: (a) If practicable, in Petrotech Southeast, Inc. sole judgment, complete the original scope of services in accordance with the procedures originally intended in this proposal: (b) Agree with the Client to modify the scope of services and the estimate of charges to include study of the previously unforeseen conditions or occurrences, such revision to be in writing and signed by the parties and incorporated herein: or (c) Terminate the services effective on the date specified by us in writing.

SUBCONTRACTED SERVICES: Petrotech Southeast, Inc. may furnish or obtain from others Subcontracted Services which are not considered normal or customary services of Petrotech Southeast, Inc

TAXES AND SURCHARGES: Any applicable taxes and surcharges shall be invoiced accordingly.

CLAIMS: in the event that Client makes claim against Petrotech Southeast, Inc. for any alleged error, omission, or act arising out of the performance of Petrotech Southeast, Inc. that cannot be mutually resolved without litigation, and Client fails to prove such claim, then Client shall pay all costs incurred by Petrotech Southeast, Inc. in defending itself against the claim, including, without limitation our personnel related costs, attorney’s fees, court costs and other claim related expenses, including without limitation, costs, fees, and expenses of experts.

SEVERABILITY: in the event that any provision herein shall be deemed invalid or unenforceable, the other provisions herein shall remain in full force and effect, and binding to the parties hereto.

SURVIVAL: All obligations arising prior to termination of the agreement and all provisions of this agreement allocation responsibility or liability between Client and Petrotech Southeast, Inc. shall survive the completion of the services and the termination of this agreement.

INTEGRATION: This agreement and the documents attached hereto and which are incorporated herein constitute the entire agreement between the parties and cannot be changed except by written instrument signed by both parties.

GOVERNING LAW: This agreement shall be governed in all respects by the laws of the State of Florida.

ACCEPTANCE: This proposal, when accepted by Client and final approval of proposal by a Petrotech Southeast, Inc. officer will constitute a bona fide contract between us, subject to terms and conditions. It is expressly agreed that there are no promises, agreements, oral or written, not specified in this proposal. This contract automatically renews on renewal date as prescribed on Page 1 of this agreement. Either party may cancel this agreement within 30 days of the renewal date.

By signing you acknowledge acceptance of Petrotech Southeast, Inc.’s terms and conditions.

Signature Printed Name Title Date If this proposal meets with your approval, please sign all pages and return Petrotech Southeast, Inc.

http://www.petrotechse.com/

CONFIDENTIAL

CE (Quote) – Addendum_v17_01.13.2023_unlocked

The terms and prices contained herein shall be treated as confidential property and may not be disclosed to others before, during, or subsequent to the terms of this

Agreement, except as required by law or as necessary to perform Services (and then only on a confidential basis satisfactory to both parties.

QUOTE - ADDENDUM

September 6, 2024

Mr. Eric Clementelli

Terracon Consultants Inc

10840 S Ridgeview Rd

Olathe, KS 65898

Thank you for allowing Clean Earth Environmental Solutions, Inc. by and through any of its subsidiaries or affiliates ("Clean Earth") to service your waste management needs. This addendum is to add additional services or pricing to your existing agreement with Clean Earth either at your request, or due to items or services performed that are not in your existing pricing schedule with us. Please see the below pricing schedule that will be added to your existing agreement as referenced below.

Quote provides example transportation rates from the Orlando Service Center. Actual charges will vary based on the distance from nearest Clean Earth service location to site. Non-Hazardous solids and liquids pricing assumes no contamination high halogen contamination from dry cleaning solvents are present.

Docusign Envelope ID: 5BC726C7-9232-4A3C-B437-B9CC8F156371

In Process

The terms and prices contained herein shall be treated as confidential property and may not be disclosed to others before, during, or subsequent to the terms of this

Agreement, except as required by law or as necessary to perform Services (and then only on a confidential basis satisfactory to both parties.

Pricing Details:

Assumptions and Conditions:

1. The disposal pricing as listed above is based on the information provided and will be confirmed following receipt of a completed waste profile. All pricing is pending profile approval and/or waste sample analysis. Clean Earth reserves the right to adjust the fees or rates herein to account for operational changes implemented to comply with changes in law, rules, regulations, permits, licenses or approvals, or to cover increases in the cost of fuel, insurance, disposal, record keeping or to otherwise address cost escalation. If Customer rejects the adjusted fees or rates, Clean Earth shall have the right to terminate the Agreement or refuse to provide any services to Customer for which

Customer rejected the adjusted Rates.

2. Unless otherwise stated in the Agreement, all invoices are subject to applicable Federal, State, and local taxes & fees as well as an Energy & Insurance recovery charge tied to the National monthly average price for diesel fuel as published by the Department of Energy https://www.cleanearthinc.com/energy-and-insurance-fees/.

Faci l i ty Item Descr iption UOM Price QTY Net Pr ice Minimums

Orlando STAB01 Non regulated sludges with free liquids , bulkable , for solidification to subtitle D landfill, DR55 $137.00 1 $137.00

Orlando STAB02 Solids/Sludges/Liquids (neutral pH) with RCRA metals, for stabilization to subtitle C/D landfill

DR55 $207.00 1 $207.00

Orlando LF72L PFAS Impacted Water Wastes DR55 $446.00 1 $446.00 #N/A

Orlando INC71 PFAS Impacted Solid Material DR55 $1,121.00 1 $1,121.00 #N/A

$1,911.00

Faci l i ty Item Descr iption UOM Price QTY Net Pr ice Minimums

Orlando TRSTOP1-3 30-55 GL drums, LTL Trans., Zone 1 (0-50 mi, RT) Each $34.00 1 $34.00 $210 Minimum / $499

Maximum per Pickup

Orlando TRSTOP2-3 30-55 GL drums, LTL Trans., Zone 2 (51-100mi, RT) Each $40.00 1 $40.00 $250 Minimum / $599

Maximum per Pickup

Orlando TRSTOP3-3 30-55 GL drums, LTL Trans., Zone 3 (101-150 mi, RT) Each $48.00 1 $48.00 $300 Minimum / $749

Maximum per Pickup

Orlando TRSTOP4-3 30-55 GL drums, LTL Trans., Zone 4 (151-200 mi, RT) Each $54.00 1 $54.00 $350 Minimum / $949

Maximum per Pickup

Orlando TRSTOP5-3 30-55 GL drums, LTL Trans., Zone 5 (>200 mi, RT) Each $59.00 1 $59.00 $400 Minimum / CBC

Maximum per Pickup

$235.00

Faci l i ty Item Descr iption UOM Price QTY Net Pr ice Minimums

Orlando ADMEMANFST Manifest Administration Fee Each $254.00 1 $254.00

$254.00

$432.00

$2,832.00Estimated Total :

E&I Estimate :

Equipment Subtotal :

Disposal Charges :

Transportation Charges :

Equipment/Admin Charges :

Transportation Subtotal :

Disposal Subtotal :

The terms and prices contained herein shall be treated as confidential property and may not be disclosed to others before, during, or subsequent to the terms of this

Agreement, except as required by law or as necessary to perform Services (and then only on a confidential basis satisfactory to both parties.

3. For a complete list of process code specifications, visit:

https://www.cleanearthinc.com/sites/default/files/Process-Specifications.pdf

4. This proposal must be signed within 30 days of receipt; otherwise a new quote will be reissued.

The terms and conditions from the Master Service (“Agreement”) with an effective date of 02/22/2023 between Stericycle Environmental Solutions, Inc, (now known as Clean Earth Environmental Solutions, Inc.), and Terracon Consultants Inc apply to this quote addendum.

Between: Clean Earth Environmental Solutions, Inc. And: Terracon Consultants Inc

Signature

Signature

Name

Name

Title

Title

Date:

Date:

Eric ClementelliFrancis ColosiIn Process https://www.cleanearthinc.com/sites/default/files/Process-Specifications.pdf

Certificate Of Completion Envelope Id: 5BC726C792324A3CB437B9CC8F156371 Status: Sent

Subject: Documents for your DocuSign Signature

Source Envelope:

Document Pages: 3 Signatures: 0 Envelope Originator:

Certificate Pages: 2 Initials: 0 Francis Colosi

AutoNav: Enabled

EnvelopeId Stamping: Enabled

Time Zone: (UTC-05:00) Eastern Time (US & Canada)

350 Poplar Church Road

Camp Hill, PA 17011 fcolosi@cleanearthinc.com

IP Address: 52.44.156.44

Record Tracking Status: Original

9/6/2024 10:25:22 AM

Holder: Francis Colosi fcolosi@cleanearthinc.com

Location: DocuSign

Signer Events Signature Timestamp Eric Clementelli eric.clementelli@terracon.com

Security Level: Email, Account Authentication (None)

Sent: 9/6/2024 10:27:00 AM

Viewed: 9/6/2024 11:00:16 AM

Electronic Record and Signature Disclosure:

Not Offered via DocuSign

Francis Colosi fcolosi@cleanearthinc.com

Security Level: Email, Account Authentication (None)

Electronic Record and Signature Disclosure:

Not Offered via DocuSign

In Person Signer Events Signature Timestamp

Editor Delivery Events Status Timestamp

Agent Delivery Events Status Timestamp

Intermediary Delivery Events Status Timestamp

Certified Delivery Events Status Timestamp

Carbon Copy Events Status Timestamp ce-dealdesk@harsco.com dd ce-dealdesk@harsco.com

Security Level: Email, Account Authentication (None)

Electronic Record and Signature Disclosure:

Not Offered via DocuSign

Martria Chapple mchapple@cleanearthinc.com

Security Level: Email, Account Authentication (None)

Electronic Record and Signature Disclosure:

Not Offered via DocuSign

Witness Events Signature Timestamp

Notary Events Signature Timestamp

Envelope Summary Events Status Timestamps Envelope Sent Hashed/Encrypted 9/6/2024 10:27:00 AM

Payment Events Status Timestamps

Preliminary Proposal

18500 N. Allied Way Phoenix, AZ 85054 | RepublicServices.com | Environmental Services, Recycling & Waste

Rev. 6.20.24

PROPOSAL #: MS-083024-TAM

COMPANY: Terracon

ADDRESS: 5463 West Waters Ave

Tampa, FL 33634

CONTACT: Eric Clementelli

PHONE: (813) 321-0340

EMAIL: eric.clementelli@terracon.com

08/30/24

Dear Eric Clementelli:

Republic Services appreciates this opportunity to provide you with environmental solutions. Following up on our earlier discussion, we are pleased to present this preliminary proposal.

Republic Services now offers comprehensive environmental solutions, including waste treatment, field and industrial services and 24/7 emergency response services. With a network of 40,000 employees and more than 175 dedicated Environmental Solutions locations, our customers benefit from working with an industry leader that can provide innovative solutions for hazardous and regulated waste, in addition to our recycling and waste services you have relied on for years.

Republic Services’ Tampa Facility offers a single source option for your waste management needs, providing premier service to companies in a wide variety of industries. This RCRA Part B facility manages most waste codes and specializes in lab packing, pharmaceutical wastes, small quantity services (LTL and household hazardous waste), waste generated by the travel/tourism industry, remediation, emergency response, and industrial cleaning.

We understand you need a professional, integrated solution, and we have designed this proposal to meet those needs. Our best-in-class customer service leverages our industry-leading capabilities and will allow us to deliver the strongest solution available in the market today. We look forward to supporting you on this project!

Scope of Work:

Republic Services’ Tampa Facilities group is please to submit this proposal to provide, labor material, and equipment necessary to properly package, transport, and dispose of designated waste materials from your location in Florida. Republic Services proposes to perform the following work:

• Properly segregate and label all designated waste materials in accordance with all applicable regulations (as necessary)

• Provide all necessary shipping documents and transport the materials in licensed vehicles.

• Customer/Generator prepared material must be in DOT-shippable containers.

• Pricing applicable on all containers (percentage of 55-gallon drum price): 5-15 Gallons 35%; 16-

30 Gallons 75%; 31-55 Gallons 100%; 56-85 Gallons 150%; CYB 300%

18500 N. Allied Way Phoenix, AZ 85054 | RepublicServices.com | Environmental Services, Recycling & Waste

Rev. 6.20.24

Facility: Republic Services Tampa Facility

Treatment Type: Various

Rates:

Description

Treat Group

Size Unit Rate Quantity Minimums Ext Cost

IDW Liquids - NH 1218 55 Gal $110.00

IDW Solids - NH 1446 55 Gal $90.00

IDW PFAS Liquids 55 Gal $255.00

IDW PFAS Solids 55 Gal $237.00

Profile Fee $125.00

RCRA Haz Waste Fee - Haz Waste only 3%

E-Manifest Fee $20.00

Estimated Disposal Subtotal

Transportation - Tampa, FL Size Unit Rate Quantity Minimums Ext Cost

Transportation Minimum

Container Rate <50 Miles 1-10 Drums 55 Gal $40.00 $218.00

Container Rate <50 Miles 11-15 Drums 55 Gal $34.00 $218.00

Container Rate <50 Miles 16-20 Drums 55 Gal $30.00 $218.00

Container Rate <50 Miles >20 Drums 55 Gal $24.00 $218.00

Container Rate 51-100 Miles 1-10 Drums 55 Gal $43.00 $254.00

Container Rate 51-100 Miles 11-15 Drums 55 Gal $37.00 $254.00

Container Rate 51-100 Miles 16-20 Drums 55 Gal $32.00 $254.00

Container Rate 51-100 Miles >20 Drums 55 Gal $26.00 $254.00

Container Rate 101-200 Miles 1-10 Drums 55 Gal $48.00 $327.00

Container Rate 101-200 Miles 11-15 Drums

55 Gal $41.00 $327.00

Container Rate 101-200 Miles 16-20 Drums

55 Gal $36.00 $327.00

Container Rate 101-200 Miles >20 Drums 55 Gal $29.00 $327.00

Container Rate 201-300 Miles 1-10 Drums 55 Gal $55.00 $400.00

Container Rate 201-300 Miles 11-15 Drums

55 Gal $47.00 $400.00

Container Rate 201-300 Miles 16-20 Drums

55 Gal $41.00 $400.00

Container Rate 201-300 Miles >20 Drums 55 Gal $33.00 $400.00

18500 N. Allied Way Phoenix, AZ 85054 | RepublicServices.com | Environmental Services, Recycling & Waste

Rev. 6.20.24

Container Rate >300 Miles 1-10 Drums 55 Gal $71.00 $508.00

Container Rate >300 Miles 11-15 Drums 55 Gal $60.00 $508.00

Container Rate >300 Miles 16-20 Drums 55 Gal $53.00 $508.00

Container Rate >300 Miles >20 Drums 55 Gal $43.00 $508.00

Demurrage - After 1 Hour Free Hour $175.00

Estimated Transportation Total

Environmental, Energy & Compliance Fee 20%

Estimated Project Total

TERMS & CONDITIONS

THE ADDRESSEE OF THIS PROPOSAL IS THE “CUSTOMER”. “REPUBLIC SERVICES” IS THE DIVISION ENTITY

IDENTIFIED BELOW THAT IS OFFERING TO PERFORM THE SERVICES. ALL SERVICES PROVIDED UNDER THIS

PROPOSAL ARE SUBJECT TO REPUBLIC SERVICE’S ENVIRONMENTAL SERVICES TERMS AND CONDITIONS

(“SERVICE TERMS”) INCORPORATED HEREIN BY THIS REFERENCE AND LOCATED AT:

www.RepublicServices.com/ServiceTermsES. A HARD COPY OF THE SERVICE TERMS WILL BE PROVIDED

UPON REQUEST. BY EXECUTING THIS PROPOSAL OR RECEIVING THE SERVICES, CUSTOMER

ACKNOWLEDGES THAT IT HAS AUTHORIZED THE SERVICES AND HAS READ AND AGREES TO BE BOUND

BY THE SERVICE TERMS. IF CUSTOMER HAS A VALID CONTRACT WITH CONTRACTOR THAT INCLUDES THE

SCOPE OF SERVICES HEREIN, THE TERMS OF SUCH CONTRACT SHALL PREVAIL IN THE EVENT OF ANY

CONFLICTS WITH THE SERVICE TERMS. NO TERMS OR CONDITIONS ON ANY CUSTOMER-PROVIDED

DOCUMENT OR RELATED TO CUSTOMER’S VENDOR SET UP PROCESS SHALL APPLY. THIS PROPOSAL AND

THE SERVICE TERMS OR CONTRACT, AS APPLICABLE, CONTAIN THE ENTIRE AGREEMENT OF THE PARTIES

RELATED TO THE SERVICES LISTED HEREIN. CUSTOMER’S UNDERSIGNED REPRESENTATIVE WARRANTS

THAT HE/SHE HAS AUTHORITY TO BIND CUSTOMER TO THIS PROPOSAL.

This preliminary proposal is valid for 30 days. After expiration of this proposal, the offer to perform services, and the prices, are subject to change or withdrawal. When waste approval is granted, we will provide written confirmation of pricing and billing unit. Payment terms are Net 30 days. Final pricing is subject to credit approval and standard credit terms.

GENERAL PROPOSAL CONDITIONS:

• Prices and services are contingent upon credit approval and waste acceptance approval from the receiving facility. Approval of waste materials will be based on a completed and signed waste profile, an MSDS or analytical report, and an evaluation of a representative sample (if required) for a treatability study.

http://www.republicservices.com/ServiceTermsES

18500 N. Allied Way Phoenix, AZ 85054 | RepublicServices.com | Environmental Services, Recycling & Waste

Rev. 6.20.24

• Surcharges may apply if waste varies from its original profile or is re-characterized or reclassified on site at the TSDF.

• Additional fees may apply at the time of delivery for assistance with off-loading or due to non-conforming waste.

• Improperly classified and/or rejected waste will be returned to the customer, or managed in an alternative manner, at the customer’s expense.

• Quoted bulk disposal charges for solid materials will be billed by the cubic yard if the truckload density is less than 2,000 pounds per cubic yard. If the truckload density is greater than 2,000 pounds per cubic yard, then bulk charges will be billed by the ton, regardless of the approved container. Republic Services’ personnel will monitor all shipments.

• Due to the U.S. EPA’s e-manifest regulations, a fee will be assessed to all customers for shipments utilizing a hazardous waste manifest.

• An EEC fee will be added to your services. EEC is an environmental, energy & compliance fee. The

EEC fluctuates monthly and will be charged as a percentage of all invoiced charges, excluding taxes.

For more information about this fee, please visit www.republicservices.com/customer-support/fee-disclosures.

• Fees will be charged for waste approvals. A Profile Submission Fee of $125 will be charged for each initial profile approval, and a Profile Renewal Fee of $40 will be charged for each profile renewal.

• Standard non-hazardous disposal pricing does not include PFOS/PFAS contaminants.

• Republic Services reserves the right to modify pricing if the scope changes in any manner.

TRANSPORTATION CONDITIONS:

• In the event that the scope of work changes from that specified above, out-of-scope work shall be charged at cost plus 15% or at rates mutually agreed upon in writing before work continues. The work site must be accessible for the size and type of truck ordered.

• Washout/cleanout charges for tankers and/or containers shall be billed at Republic Services’

Standard Rates, unless previously quoted.

• Expenses related to waiting time at the work site or work stoppage outside of Republic Services’ control will be the responsibility of the customer and will be billed at quoted rates, or at cost plus

15% if not quoted.

• All shipping containers must be non-leaking and D.O.T. approved.

Thank you for this opportunity – we appreciate your interest in our services. I believe this preliminary proposal meets your specifications, but please contact me if you have any questions.

Division Entity: US Ecology Tampa, Inc.

Republic Services Sales Representative: Marco Sapone

Phone: (386) 530-9891

Email: msapone@republicservices.com

Customer hereby accepts this Preliminary Proposal.

Customer Representative: ________________________________________________________________ http://www.republicservices.com/customer-support/fee-disclosures http://www.republicservices.com/customer-support/fee-disclosures

18500 N. Allied Way Phoenix, AZ 85054 | RepublicServices.com | Environmental Services, Recycling & Waste

Rev. 6.20.24

Name: ___________________________________________________________________

Title: ___________________________________________________________________

Date: ___________________________________________________________________

Phone: _________________________________________________________________

Email: _________________________________________________________________