Funding Information:

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

Category Grant # Project # Year Amount

Additional Funding Information attached on separate page.

Rev. 8/17/2020

STATE OF FLORIDA

DEPARTMENT OF ENVIRONMENTAL PROTECTION

Task Assignment Change Order This Change Order is entered into between the Parties named below and amends the Task Assignment (TA) and any previous TA Change Orders (TACO) as follows:

1. TA Number: TACO Number: Contract Number:

TACO Description:

2. Parties State of Florida Department of Environmental Protection (Department) Department’s Project Manager: Department’s 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 Name:

4. There are no changes to the TA compensation.

The compensation of the TA is changed to the amounts indicated below:

Amended Price Price Prior to TACO Fixed Price:

Fixed Unit Rate: (Extended Price)

Cost Reimbursement:

Total TA Value:

5. There are no changes to the TA Expiration Date.

The TA Completion Date is changed from ______________ to ______________ (a total of ______ days).

6. There are no changes to the Attachments.

Attachment ___ is replaced with Attachment -____.

7. No Additional Changes.

Additional Changes:

8. All other terms and conditions of the TA remain in effect. If and to the extent that any inconsistencies may appear between the TA and this TACO, the provisions of this TACO shall control.

IN WITNESS WHEREOF, this TACO 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.

DC004B 1 HW687

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

Contractor Donna Cline Contractor 904-479-7415

ERIC_5047

Sun State Supply

✔ $ 14,832.92 $ 7,949.48

$ 14,832.92 $ 7,949.48 ✔ Completion

Completion 01/15/2027 01/15/2027 0

✔ 1 1 1

Terracon Consultants, Inc.

Contractor Donna Cline

Senior Associate / Remediation Engineer

3/28/25

Digitally signed by Cline, Donna L DN: cn=Cline, Donna L, ou=General Users, email=Donna.Cline@terracon.com Date: 2025.03.28 09:02:05 -04'00'

Cline, Donna L

Mubeen Darji

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

Date: 2025.03.27 15:49:17 -04'00'

N/A

This TACO authorizes Terracon to conduct additional groundwater sampling, make changes in field staff, prepare an SRCR, and reduce the price of IDW subcontracting.

Task Assignment Notification/Change Order Deliverables and Invoice Schedule Attachment

Contract Number:

Task Assignment #:

Change Order #:

Deliverables:

Deliverable Deliverable Due Date

Invoice Schedule:

Requirements for Invoice Submittal Amount to be Invoiced

TOTAL COST

BWC TAFORM 01/18

HW687

DC004B

Subtasks 1 & 3: Project Management; Second semiannual groundwater sampling and laboratory analysis event of monitoring wells.

Subtask 2: First semiannual groundwater sampling and laboratory analysis event of monitoring wells. 06/30/2024

06/30/2026

Subtask 2: DEP approval of email report with activities description, field notes & forms, updated tables & figures, lab report, waste manifest, conclusions, and recommendations.

Subtasks 1 & 3: DEP approval of email report with activities description, field notes & forms, updated tables & figures, lab report, waste manifest, conclusions, and recommendations.

$ 3,993.86

$ 10,839.06

$ 14,832.92

FLORIDA DEPARTMENT OF

Environmental Protection

Bob Martinez Center 2600 Blair Stone Road

Tallahassee, FL 32399-2400

Ron DeSantis Governor

Secretary

Memorandum

TO:

FROM:

Negotiation File

ERIC

, Project Manager

SUBJECT: Negotiation Summary

DATE:

Task Assignment (HW687)

FDEP COST ESTIMATE

Contractor: Terracon FINAL Date: 3/27/2025

Task #: DC004B SubTask 1 Project Management Site: Former Sun State Supply ERIC_5047 SubTask 2 Groundwater Monitoring and Reporting Event 1

Activity/Phase: Semiannual GW Sampling Reports SubTask 3 Groundwater Monitoring and Reporting Event 2 Project Manager: Gabriel Sostre

Totals 1 2 3 Labor Rate Category

$67.74 Project Manager Donna Cline 6.38 6.38 $71.63 Senior Engineer Greg Sattler 16.00 0.00 16.00 $29.10 Environmental Technicia Pat Beers 23.50 0.00 23.50 $32.50 CADD Specialist Chelse Fugate 4.00 2.00 2.00 $29.33 Staff Scientist Rachael Grueller 12.00 9.50 2.50 $51.97 Senior Scientist Lydia Wing 19.50 12.00 7.50

Total Hours 81.38 6.38 23.50 51.50

Direct Labor $3,757.61 $432.29 $967.28 $2,358.04

Overhead 116.00% $4,358.83 $501.46 $1,122.04 $2,735.33 Gen & Admin 0.00% $0.00 $0.00 $0.00 $0.00 Fringe 56.26% $2,114.03 $243.21 $544.19 $1,326.63 Total Labor $10,230.47 $1,176.96 $2,633.51 $6,420.00

Travel Vehicle Rental $720.00 240.00$ 480.00$ Mileage Costs $0.00 $0.00 $0.00 Air Fare $0.00 $0.00 $0.00 Per diem + Hotel $0.00 $0.00 $0.00 Total Travel $720.00 $240.00 $480.00

Subcontractor (Services Procurement)

IDW $645.00 215.00$ 430.00$

Subcontractor Subtotal $645.00 $215.00 $430.00 Handling Fee $64.50 $21.50 $43.00 Total Subcontractor Cost $709.50 $236.50 $473.00

Laboratory Analytical Costs $567.00 126.00$ 441.00$ Fast Turnaround Charges $0.00 $0.00 $0.00 Sample Shipping $156.00 52.00$ 104.00$ Total Laboratory $723.00 $178.00 $545.00

Field Expenses Personal Protection $0.00 $0.00 $0.00 Expendables $139.50 46.50$ 93.00$ Equipment (Drilling related) $0.00 $0.00 $0.00 Equipment (Analytical related) $947.40 296.00$ 651.40$ Equipment (IDW related) $300.00 100.00$ 200.00$ Equipment (Other) $40.00 $0.00 40.00$ Total Field Expenses $1,426.90 $442.50 $984.40

Subtotal $13,809.87 $1,176.96 $3,730.51 $8,902.40 Completion Fee $1,023.05 $117.70 $263.35 $642.00

Total Estimated Cost $14,832.92 $1,294.66 $3,993.86 $9,544.40

Original $7,949.48 $662.13 $3,993.86 $3,293.49 Delta, WCD1-3 $6,883.42 $632.51 $0.00 $6,250.91 Check TACO 1 $14,832.90 $1,294.64 $3,993.86 $9,544.40 Error 0.02 0.02 0 0 Final $14,832.92 $1,294.66 $3,993.86 $9,544.40

REV: 02/03 CEF TERRACON Page 1

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Sun State Supply ERIC_5047 SUBTASK 2: Semiannual Groundwater Monitoring and Reporting (Event 1)

FINAL PROPOSAL NO. PH1237376

DATE: 3/24/2025

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Scientist/Geologist LW 0.50 Senior Scientist/Geologist LW 1.00 Senior Scientist/Geologist LW 4.50 Staff Scientist RG Load/unload 0.50 Staff Scientist RG Mobilization/Demobilization (from Winter Park) 1.00 Staff Scientist RG Collect groundwater levels (4 wells,10 minutes per well) 0.50 Staff Scientist RG Collect groundwater samples (2 wells, 1.5 hours each) 3.00

IDW

Staff Scientist RG 0.50 Senior Scientist/Geologist LW 0.50 Staff Scientist RG 1.50 Report Deliverable Project Scientist RG Prepare report tables, trend graphs and draft maps 2.50 Senior Scientist/Geologist LW Prepare report 3.00 Senior Scientist/Geologist LW Discussion with onsite and offsite owners about Conditional Closure option 0.00 Senior Scientist/Geologist LW QA/QC field and laboratory data 0.50 Senior Scientist/Geologist LW Review and Summarize Water Quality Parameters and Trend Graphs 1.00 Senior Scientist/Geologist LW Review and Summarize Groundwater Analytical Results 1.00 GIS Technician CF Prepare base figures and Exhibits (groundwater flow and concentrations maps) 2.00

Personnel: LW RG CF Hours: 12.00 9.50 2.00 TOTAL LABOR 23.50

VEHICLE TYPE RATE UNIT USEAGE

Truck (groundwater sampling 120 day 1 120.00$ Truck (IDW) 120 day 1 120.00$

TOTAL VEHICLE 240.00$

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM -$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

Erwin Remediation IDW Disposal 215.00$ each 1 215.00$

TOTAL 215.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC* #IDW TOTALS

Halocarbons EPA 8260 (short list) 63.00$ 2 0 0 126.00$ Sample Shipping Small Cooler (2 day) 52.00$ 1 52.00$

TOTAL LAB 178.00$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

Ice - samples 6.50$ 1 1 6.50$ Analytical Shallow groundwater samplin 290.00$ day 1 290.00$

Tubing, HDPE 0.30$ ft 0 -$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 2 6.00$

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

TOTAL EQUIPMENT 442.50$

Meet hauler for pickup-disposal

Request sample kit Prepare Health and Safety Plan and SOW Acquire offsite acess agreements

IDW handling & storage IDW manifest completion

FINAL SUBTASK 3: Semiannual Groundwater Monitoring and Reporting (Event 2)

PROPOSAL NO. PH1237376

DATE: 3/24/2025

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Scientist/Geologist LW 0.50 Senior Scientist/Geologist LW 0.50 Senior Scientist/Geologist LW 0.50 Staff Scientist RG Load/unload 0.50 Staff Scientist RG Load/unload (Change in personnel) WCD #2 (0.50) Environmental Technician PB Load/unload (Change in personnel) WCD #2 0.50 Staff Scientist RG Mobilization/Demobilization (from Winter Park) 1.00 Staff Scientist RG Mobilization/Demobilization (from Winter Park) (Change in personnel) WCD #2 (1.00) Environmental Technician PB Mobilization/Demobilization (from Winter Park) (Change in personnel) WCD #2 1.00 Staff Scientist RG Collect groundwater levels (4 wells,10 minutes per well) 0.50 Staff Scientist RG Collect groundwater levels (4 wells,10 minutes per well) (Change in pe WCD #2 (0.50) Environmental Technician PB Collect groundwater levels (4 wells,10 minutes per well) (Change in pe WCD #2 0.50 Staff Scientist RG Collect groundwater samples (2 wells, 1.5 hours each) 3.00 Staff Scientist RG Collect groundwater samples (2 wells, 1.5 hours each) (Change in pers WCD #2 (3.00) Environmental Technician PB Collect groundwater samples (2 wells, 1.5 hours each) (Change in personnel) 3.00 Staff Scientist RG Verify shallow and intermediate montirong wells for viability. Depth to w WCD #1 9.50 measurement and groundwater sampling of 3 additional wells and IDW handling.

Staff Scientist RG Verify shallow and intermediate montirong wells for viability. Depth to w WCD #2 (9.50) measurement and groundwater sampling of 3 additional wells and IDW handling.

Environmental Technician PB Verify shallow and intermediate montirong wells for viability. Depth to w WCD #2 9.50 measurement and groundwater sampling of 3 additional wells and IDW handling.

IDW

Staff Scientist RG 0.50 Staff Scientist RG IDW handling & storage (Change in personnel) WCD #2 (0.50) Environmental Technician PB IDW handling & storage (Change in personnel) WCD #2 0.50 Senior Scientist/Geologist LW 0.50 Staff Scientist RG 1.50 Staff Scientist RG WCD #2 (1.50) Environmental Technician PB Meet hauler for pickup-disposal (Change in personnel) WCD #2 1.50 Additional Quarterly Groundwater Sampling (WCD#3) Staff Scientist PB Load/unload WCD #3 0.50 Staff Scientist PB Mobilization/Demobilization (from Winter Park) WCD #3 1.00 Staff Scientist PB Collect groundwater levels (2 wells,10 minutes per well) WCD #3 0.50 Staff Scientist PB Collect groundwater samples (2 wells, 1.5 hours each) WCD #3 3.00

IDW

Staff Scientist PB IDW handling & storage WCD #3 0.50 Staff Scientist PB Meet hauler for pickup-disposal WCD #3 1.50 Report Deliverable Project Scientist GS Prepare report tables, trend graphs and draft maps WCD #3 16.00 Project Scientist RG Prepare report tables, trend graphs and draft maps 2.50 Senior Scientist/Geologist LW Prepare report 3.00 Senior Scientist/Geologist LW QA/QC field and laboratory data 0.50 Senior Scientist/Geologist LW Review and Summarize Water Quality Parameters and Tend Graphs 1.00 Senior Scientist/Geologist LW Review and Summarize Groundwater Analytical Results 1.00 GIS Technician CF Prepare base figures and Exhibits (groundwater flow and concentrations maps) 2.00

Personnel: LW RG CF PB GS Hours: 7.50 2.50 2.00 23.50 16.00 TOTAL LABOR 51.50

VEHICLE TYPE RATE UNIT USEAGE

Truck (groundwater sampling 120 day 1 120.00$ Truck (IDW) 120 day 1 120.00$ Truck (groundwater sampling 120 day 1 WCD #3 120.00$ Truck (IDW) 120 day 1 WCD #3 120.00$

TOTAL VEHICLE 480.00$

Meet hauler for pickup-disposal (Change in personnel) Meet hauler for pickup-disposal

Request sample kit Prepare Health and Safety Plan PreTask Planning, prepare field sampling SOW/coordinate offsite access

IDW handling & storage

IDW manifest completion

FINAL SUBTASK 3: Semiannual Groundwater Monitoring and Reporting (Event 2)

PROPOSAL NO. PH1237376

DATE: 3/24/2025

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM -$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

Petrotech IDW Disposal 215.00$ each 1 215.00$ Petrotech IDW Disposal 215.00$ each 1 WCD #3 215.00$

TOTAL 430.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC* #IDW TOTALS

Halocarbons EPA 8260 (short list) 63.00$ 2 0 0 126.00$

EPA 8260 (short list) 63.00$ 3 0 WCD #1 189.00$ Sample Shipping Small Cooler (2 day) 52.00$ 1 52.00$

EPA 8260 (short list) 63.00$ 2 0 WCD #3 126.00$ Sample Shipping Small Cooler (2 day) 52.00$ 1 WCD #3 52.00$

TOTAL LAB 545.00$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 1 40.00$

Ice - samples 6.50$ day 1 6.50$ Expendables 40.00$ day 1 WCD #3 40.00$ Ice - samples 6.50$ day 1 WCD #3 6.50$

Analytical Shallow groundwater samplin 290.00$ day 1 290.00$ Tubing, HDPE 0.30$ ft 78 WCD #1 23.40$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 2 6.00$ Shallow groundwater samplin 290.00$ day 1 WCD #3 290.00$ Tubing, HDPE 0.30$ ft 90 WCD #3 27.00$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 2 WCD #3 6.00$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 3 WCD #1 9.00$

IDW 55-gallon drum, new 100.00$ drum 1 100.00$ 55-gallon drum, new 100.00$ drum 1 WCD #3 100.00$

Other Metal detector 40.00$ day 1 WCD #1 40.00$

TOTAL EQUIPMENT 984.40$

Contractor: Terracon DELTA Date: 3/27/2025

Task #: DC004B SubTask 1 Project Management Site: Former Sun State Supply ERIC_5047 SubTask 2 Groundwater Monitoring and Reporting Event 1

Activity/Phase: Semiannual GW Sampling Reports SubTask 3 Groundwater Monitoring and Reporting Event 2 Project Manager: Gabriel Sostre

Totals 1 2 3 Labor Rate Category

$67.74 Project Manager Donna Cline 3.12 3.12 $71.63 Senior Engineer Greg Sattler 16.00 0.00 16.00 $29.10 Environmental Technicia Pat Beers 23.50 0.00 23.50 $32.50 CADD Specialist Chelse Fugate 0.00 0.00 0.00 $29.33 Staff Scientist Rachael Grueller -7.00 0.00 -7.00 $51.97 Senior Scientist Lydia Wing 0.00 0.00 0.00

Total Hours 35.62 3.12 0.00 32.50

Direct Labor $1,835.82 $211.20 $0.00 $1,624.62

Overhead 116.00% $2,129.55 $244.99 $0.00 $1,884.56 Gen & Admin 0.00% $0.00 $0.00 $0.00 $0.00 Fringe 56.26% $1,032.83 $118.82 $0.00 $914.01 Total Labor $4,998.20 $575.01 $0.00 $4,423.19

Travel Vehicle Rental $240.00 -$ 240.00$ Mileage Costs $0.00 $0.00 $0.00 Air Fare $0.00 $0.00 $0.00 Per diem + Hotel $0.00 $0.00 $0.00 Total Travel $240.00 $0.00 $240.00

Subcontractor (Services Procurement)

IDW $215.00 -$ 215.00$

Subcontractor Subtotal $215.00 $0.00 $215.00 Handling Fee $21.50 $0.00 $21.50 Total Subcontractor Cost $236.50 $0.00 $236.50

Laboratory Analytical Costs $315.00 -$ 315.00$ Fast Turnaround Charges $0.00 $0.00 $0.00 Sample Shipping $52.00 -$ 52.00$ Total Laboratory $367.00 $0.00 $367.00

Field Expenses Personal Protection $0.00 $0.00 $0.00 Expendables $46.50 -$ 46.50$ Equipment (Drilling related) $0.00 $0.00 $0.00 Equipment (Analytical related) $355.40 -$ 355.40$ Equipment (IDW related) $100.00 -$ 100.00$ Equipment (Other) $40.00 $0.00 40.00$ Total Field Expenses $541.90 $0.00 $541.90

Subtotal $6,383.60 $575.01 $0.00 $5,808.59 Completion Fee $499.82 $57.50 $0.00 $442.32

Total Estimated Cost $6,883.42 $632.51 $0.00 $6,250.91

DELTA SUBTASK 3: Semiannual Groundwater Monitoring and Reporting (Event 2)

PROPOSAL NO. PH1237376

DATE: 3/24/2025

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Groundwater Sampling Senior Scientist/Geologist LW 0.00 Senior Scientist/Geologist LW 0.00 Senior Scientist/Geologist LW 0.00 Staff Scientist RG Load/unload 0.00 Staff Scientist RG Load/unload (Change in personnel) WCD #2 (0.50) Environmental Technician PB Load/unload (Change in personnel) WCD #2 0.50 Staff Scientist RG Mobilization/Demobilization (from Winter Park) 0.00 Staff Scientist RG Mobilization/Demobilization (from Winter Park) (Change in personnel) WCD #2 (1.00) Environmental Technician PB Mobilization/Demobilization (from Winter Park) (Change in personnel) WCD #2 1.00 Staff Scientist RG Collect groundwater levels (4 wells,10 minutes per well) 0.00 Staff Scientist RG Collect groundwater levels (4 wells,10 minutes per well) (Change in pe WCD #2 (0.50) Environmental Technician PB Collect groundwater levels (4 wells,10 minutes per well) (Change in pe WCD #2 0.50 Staff Scientist RG Collect groundwater samples (2 wells, 1.5 hours each) 0.00 Staff Scientist RG Collect groundwater samples (2 wells, 1.5 hours each) (Change in pers WCD #2 (3.00) Environmental Technician PB Collect groundwater samples (2 wells, 1.5 hours each) (Change in personnel) 3.00 Staff Scientist RG Verify shallow and intermediate montirong wells for viability. Depth to w WCD #1 9.50 measurement and groundwater sampling of 3 additional wells and IDW handling.

Staff Scientist RG Verify shallow and intermediate montirong wells for viability. Depth to w WCD #2 (9.50) measurement and groundwater sampling of 3 additional wells and IDW handling.

Environmental Technician PB Verify shallow and intermediate montirong wells for viability. Depth to w WCD #2 9.50 measurement and groundwater sampling of 3 additional wells and IDW handling.

IDW

Staff Scientist RG 0.00 Staff Scientist RG IDW handling & storage (Change in personnel) WCD #2 (0.50) Environmental Technician PB IDW handling & storage (Change in personnel) WCD #2 0.50 Senior Scientist/Geologist LW 0.00 Staff Scientist RG 0.00 Staff Scientist RG WCD #2 (1.50) Environmental Technician PB Meet hauler for pickup-disposal (Change in personnel) WCD #2 1.50 Additional Quarterly Groundwater Sampling (WCD#3) Staff Scientist PB Load/unload WCD #3 0.50 Staff Scientist PB Mobilization/Demobilization (from Winter Park) WCD #3 1.00 Staff Scientist PB Collect groundwater levels (2 wells,10 minutes per well) WCD #3 0.50 Staff Scientist PB Collect groundwater samples (2 wells, 1.5 hours each) WCD #3 3.00

IDW

Staff Scientist PB IDW handling & storage WCD #3 0.50 Staff Scientist PB Meet hauler for pickup-disposal WCD #3 1.50 Report Deliverable Project Scientist GS Prepare report tables, trend graphs and draft maps WCD #3 16.00 Project Scientist RG Prepare report tables, trend graphs and draft maps 0.00 Senior Scientist/Geologist LW Prepare report 0.00 Senior Scientist/Geologist LW QA/QC field and laboratory data 0.00 Senior Scientist/Geologist LW Review and Summarize Water Quality Parameters and Tend Graphs 0.00 Senior Scientist/Geologist LW Review and Summarize Groundwater Analytical Results 0.00 GIS Technician CF Prepare base figures and Exhibits (groundwater flow and concentrations maps) 0.00

Personnel: LW RG CF PB GS Hours: 0.00 (7.00) 0.00 23.50 16.00 TOTAL LABOR 32.50

VEHICLE TYPE RATE UNIT USEAGE

Truck (groundwater sampling 120 day 0 -$ Truck (IDW) 120 day 0 -$ Truck (groundwater sampling 120 day 1 WCD #3 120.00$ Truck (IDW) 120 day 1 WCD #3 120.00$

TOTAL VEHICLE 240.00$

Meet hauler for pickup-disposal (Change in personnel)

Request sample kit Prepare Health and Safety Plan PreTask Planning, prepare field sampling SOW/coordinate offsite access

IDW handling & storage

IDW manifest completion Meet hauler for pickup-disposal

DELTA SUBTASK 3: Semiannual Groundwater Monitoring and Reporting (Event 2)

PROPOSAL NO. PH1237376

DATE: 3/24/2025

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM -$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

Petrotech IDW Disposal 215.00$ each 1 -$ Petrotech IDW Disposal 215.00$ each 1 WCD #3 215.00$

TOTAL 215.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC* #IDW TOTALS

Halocarbons EPA 8260 (short list) 63.00$ 2 0 0 -$

EPA 8260 (short list) 63.00$ 3 0 WCD #1 189.00$ Sample Shipping Small Cooler (2 day) 52.00$ 1 -$

EPA 8260 (short list) 63.00$ 2 0 WCD #3 126.00$ Sample Shipping Small Cooler (2 day) 52.00$ 1 WCD #3 52.00$

TOTAL LAB 367.00$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 0 -$

Ice - samples 6.50$ day 0 -$ Expendables 40.00$ day 1 WCD #3 40.00$ Ice - samples 6.50$ day 1 WCD #3 6.50$

Analytical Shallow groundwater samplin 290.00$ day 0 -$ Tubing, HDPE 0.30$ ft 78 WCD #1 23.40$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 0 -$ Shallow groundwater samplin 290.00$ day 1 WCD #3 290.00$ Tubing, HDPE 0.30$ ft 90 WCD #3 27.00$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 2 WCD #3 6.00$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 3 WCD #1 9.00$

IDW 55-gallon drum, new 100.00$ drum 0 -$ 55-gallon drum, new 100.00$ drum 1 WCD #3 100.00$

Other Metal detector 40.00$ day 1 WCD #1 40.00$

TOTAL EQUIPMENT 541.90$

Contractor: Terracon ORIGINAL Date: 3/27/2025

Task #: DC004B SubTask 1 Project Management Site: Former Sun State Supply ERIC_5047 SubTask 2 Groundwater Monitoring and Reporting Event 1

Activity/Phase: Semiannual GW Sampling Reports SubTask 3 Groundwater Monitoring and Reporting Event 2 Project Manager: Gabriel Sostre

Totals 1 2 3 Labor Rate Category

$67.74 Project Manager Donna Cline 3.26 3.26 $32.50 CADD Specialist Chelse Fugate 4.00 2.00 2.00 $29.33 Staff Scientist Rachael Grueller 19.00 9.50 9.50 $51.97 Senior Scientist Lydia Wing 19.50 12.00 7.50

Total Hours 45.76 3.26 23.50 19.00

Direct Labor $1,921.79 $221.09 $967.28 $733.42

Overhead 116.00% $2,229.27 $256.46 $1,122.04 $850.77 Gen & Admin 0.00% $0.00 $0.00 $0.00 $0.00 Fringe 56.26% $1,081.20 $124.39 $544.19 $412.62 Total Labor $5,232.26 $601.94 $2,633.51 $1,996.81

Travel Vehicle Rental $480.00 240.00$ 240.00$ Mileage Costs $0.00 $0.00 $0.00 Air Fare $0.00 $0.00 $0.00 Per diem + Hotel $0.00 $0.00 $0.00 Total Travel $480.00 $240.00 $240.00

Subcontractor (Equipment Procurement) none $0.00 $0.00 $0.00 Subcontractor Subtotal $0.00 $0.00 $0.00 Procurement Fee $0.00 $0.00 $0.00 Total Subcontractor Cost $0.00 $0.00 $0.00

Subcontractor (Services Procurement)

IDW $430.00 215.00$ 215.00$

Subcontractor Subtotal $430.00 $215.00 $215.00 Handling Fee $43.00 $21.50 $21.50 Total Subcontractor Cost $473.00 $236.50 $236.50

Laboratory Analytical Costs $252.00 126.00$ 126.00$ Fast Turnaround Charges $0.00 $0.00 $0.00 Sample Shipping $104.00 52.00$ 52.00$ Total Laboratory $356.00 $178.00 $178.00

Field Expenses Personal Protection $0.00 $0.00 $0.00 Expendables $93.00 46.50$ 46.50$ Equipment (Drilling related) $0.00 $0.00 $0.00 Equipment (Analytical related) $592.00 296.00$ 296.00$ Equipment (IDW related) $200.00 100.00$ 100.00$ Equipment (Other) $0.00 $0.00 $0.00 Total Field Expenses $885.00 $442.50 $442.50

Subtotal $7,426.26 $601.94 $3,730.51 $3,093.81 Completion Fee $523.22 $60.19 $263.35 $199.68

Total Estimated Cost $7,949.48 $662.13 $3,993.86 $3,293.49

Site Name: Site ID #:

Contract #: Contractor:

• Reason for Work Change Directive :

• Description of Work Change Directive :

• Attachments (if applicable, list documents supporting change):

• Costs (if negotiated unit costs, provide information below):

Authorized Contractor Signature:

Authorized FDEP Signature:

FDEP Supervisor Approval:

(if applicable)

Additional work is not authorized without prior FDEP approval as indicated by an approved Work Change Directive Form or Task Assignment Change Order Form. It is the Contractor's responsibility to ensure that additional costs associated with this WCD are resolved by a Task Assignment Change Order (TACO) prior to the completion date of the original Task Assignment or subsequent TACOs completed prior to the execution date of this WCD. Failure to do so will result in a loss of reimbursement for work associated with this WCD.

Task Assignment #: Work Change Directive #:

Maximum Estimated Increase in Task Amount:

Former Sun State Supply ERIC_5047

HW687 Terracon

DC004B 1

Terracon is requesting to perform SubTask 3, groundwater sampling in September 2024. The June 16, 2024, groundwater sampling results in the intermediate wells were below the GCTL criteria. As a result, Terracon is requesting to sample the intermediate monitoring wells 90 days after the June 16, 2024, SubTask 2 sampling event. SubTask 3 includes groundwater sampling of two intermediate wells. Terracon is requesting sample intermediate monitoring well MW015 in place of monitoring well MW0013. Intermediate monitoring well MW015 had a GCTL PCE exceedance at a concentration of 16.7 μg/L on June 6, 2002. While monitoring well MW013 had two consecutive sampling events below the GCTL criteria (4/27/22 and 06/12/24). Sampling intermediate monitoring well MW005 will continue as scheduled. On July 18, 2024, Terracon replied to FDEP comments regarding sampling shallow aquifer wells, as a result, sampling shallow monitoring wells MW004, MW009, and MW009 are included in SubTask 3

Based on the FDEP SubTask 2 comments, Terracon is requesting time to locate and verify the shallow monitoring wells MW004, MW007, MW009, and intermediate well MW015 viability for groundwater sampling.

Since these wells have not been sampled since 2002, 1-hour per well has been allocated to locate and determine well viability. Additionally, 1.5 hours per well for sampling, 1/2 hour to collect depth-to-water measurements at monitoring wells MW004, MW007, and MW015, and 1/2 hour to handle the additional IDW.

None

SubTask 1: 0.54 hours for Project Manager (DC) SubTask 2: Completed SubTask 3: 9.5 hours for Staff Scientist (RG), $189.00 for lab services, and $72.40 for field expenses.

$ 1,500.00

Sattler, Greg Digitally signed by Sattler, Greg Date: 2024.08.06 15:06:35 -04'00'

Patrick McGrane Digitally signed by Patrick McGrane Date: 2024.08.06 16:06:29 -04'00'

Mubeen Darji, P.E.

Digitally signed by Mubeen Darji, P.E.

Date: 2024.08.06 16:11:06 -04'00'

• Reason for Work Change Directive :

• Description of Work Change Directive :

• Attachments (if applicable, list documents supporting change):

• Costs (if negotiated unit costs, provide information below):

Authorized Contractor Signature:

Authorized FDEP Signature:

FDEP Supervisor Approval:

(if applicable)

Additional work is not authorized without prior FDEP approval as indicated by an approved Work Change Directive Form or Task Assignment Change Order Form. It is the Contractor's responsibility to ensure that additional costs associated with this WCD are resolved by a Task Assignment Change Order (TACO) prior to the completion date of the original Task Assignment or subsequent TACOs completed prior to the execution date of this WCD. Failure to do so will result in a loss of reimbursement for work associated with this WCD.

Task Assignment #: Work Change Directive #:

Maximum Estimated Increase in Task Amount:

Former Sun State Supply ERIC_5047

HW687 Terracon

DC004B 2

Terracon is requesting a change in personnel, Rachael Grueller (RG) was scheduled for groundwater sampling, but is now unavailable, and Patrick Beers (PB) will be performing this work.

Decrease of 19 hours for RG, and increase of 19 hours for PB. This will be an overall reduction in fees.

None

SubTask 1: Reduction in hours for Project Manager (DC) SubTask 2: Completed SubTask 3: 19 hours reduction for Staff Scientist (RG), 19 hour increase for Environmental Technician (BP)

$ 0.00

Digitally signed by Cline, Donna L DN: cn=Cline, Donna L, ou=General Users, email=Donna.Cline@terracon.com Date: 2024.09.06 12:58:47 -04'00'

Cline, Donna L

Patrick McGrane Digitally signed by Patrick McGrane Date: 2024.09.09 08:26:22 -04'00'

• Reason for Work Change Directive :

• Description of Work Change Directive :

• Attachments (if applicable, list documents supporting change):

• Costs (if negotiated unit costs, provide information below):

Authorized Contractor Signature:

Authorized FDEP Signature:

FDEP Supervisor Approval:

(if applicable)

Additional work is not authorized without prior FDEP approval as indicated by an approved Work Change Directive Form or Task Assignment Change Order Form. It is the Contractor's responsibility to ensure that additional costs associated with this WCD are resolved by a Task Assignment Change Order (TACO) prior to the completion date of the original Task Assignment or subsequent TACOs completed prior to the execution date of this WCD. Failure to do so will result in a loss of reimbursement for work associated with this WCD.

Task Assignment #: Work Change Directive #:

Maximum Estimated Increase in Task Amount:

Sun State Supply (Former) ERIC_5047

HW687 Terracon

DC004B 3

Terracon is requesting one additional quarterly groundwater sampling event to demonstrate (possibly) SRCR conditions. Monitoring well MW009 and MW015 need one additional groundwater sample result demonstrating VOH concentrations below the respective GCTLs. Additionally, we would also like to include the preparation of an SRCR

Resample groundwater from MW009 and MW015 for VOHs by EPA Method 8260 and prepare an SRCR.

Environmental Technician - mobilization, DTW, equipment calibration, groundwater sampling, IDW handling, and mobilize and meet IDW contractor - 7 hours @ $100/hour = $700 Truck - 2 days - 2@$120 = $240 Subcontractor - IDW disposal - Erwin Remediation - 1 drum @ $215/drum = $215 Laboratory Analysis and Shipping ~ $250.00 Equipment - expendables, shallow gw sampling kit, tubing, and 1 dum ~$500 SRCR - researching soil data, generating new graphs ~$4,000

$ 7,000.00

Digitally signed by Cline, Donna L DN: cn=Cline, Donna L, ou=General Users, email=Donna.Cline@terracon.com Date: 2024.12.05 16:51:17 -05'00'

Cline, Donna L

Gabriel M Sostre Digitally signed by Gabriel M Sostre Date: 2024.12.06 08:27:05 -05'00'

Digitally signed by Jennifer Farrell Date: 2024.12.06 08:40:55 -05'00'

From: Brown, Julie A. <Julie.Brown@terracon.com> Sent: Thursday, January 30, 2025 10:26 AM To: Sostre, Gabriel <Gabriel.Sostre@floridadep.gov> Cc: Cline, Donna L <Donna.Cline@terracon.com>; Sattler, Greg <Greg.Sattler@terracon.com> Subject: Request for HW687 TACO-01 DC004B Former Sun State Supply ERIC_5047

EXTERNAL MESSAGE

This email originated outside of DEP. Please use caution when opening attachments, clicking links, or responding to this email.

Good morning Gabriel, attached please nd TACO #1 for above. It includes the following for Subtask 3.

• Change in labor, lab services and eld services;

• Reduction of hours for Sta Scientist; increase in hours for Environmental Technician (0 price change);

• One additional quarterly groundwater sampling event.

Also, the TACO is o by $.02. If you need anything else, please let me know. Thank you for your help with this one. Julie

From: Sostre, Gabriel <Gabriel.Sostre@floridadep.gov> Sent: Wednesday, January 29, 2025 10:46 AM To: Brown, Julie A. <Julie.Brown@terracon.com> Cc: Cline, Donna L <Donna.Cline@terracon.com>; Sattler, Greg <Greg.Sattler@terracon.com> Subject: RE: H1237376 Sun State DC004B HW687 WCD #4

Julie, Cost reductions to TAs do not require a WCD. WCDs are necessary only in the event of a cost increase to the TA or time sensitive work in which a TACO cannot be completed before the work is set to begin. To

Gabriel Sostre Environmental Specialist II Waste Management/Waste Site Cleanup Section Florida Department of Environmental Protection Gabriel.Sostre@FloridaDEP.gov Office: 850-245-8749 reconcile a cost decrease in the TA, a TACO is required. Let me know if you have any questions or concerns.

Thanks, From: Brown, Julie A. <Julie.Brown@terracon.com> Sent: Wednesday, January 29, 2025 9:54 AM To: Sostre, Gabriel <Gabriel.Sostre@floridadep.gov> Cc: Cline, Donna L <Donna.Cline@terracon.com>; Sattler, Greg <Greg.Sattler@terracon.com> Subject: H1237376 Sun State DC004B HW687 WCD #4

EXTERNAL MESSAGE

This email originated outside of DEP. Please use caution when opening attachments, clicking links, or responding to this email.

Good morning Gabriel attached please nd WCD #4 for above. It addresses a $90.00 reduction in IDW. Let me know if you need anything else. Thank you. Julie

Julie Brown Senior Administrative Staff

1675 Lee Road I Winter Park, FL 32789 D (407) 618-8338 I M (407) 456-1845 julie.brown@terracon.com I Terracon.com

Terracon provides environmental, facilities, geotechnical, and materials consulting engineering services delivered with responsiveness, resourcefulness, and reliability.

Gabriel Sostre Environmental Specialist II Waste Management/Waste Site Cleanup Section Florida Department of Environmental Protection Gabriel.Sostre@FloridaDEP.gov Office: 850-245-8749

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.

Donna Cline

Sr. Associate / Remediation Engineer

05/20/24

HW687

DC004B Completion January 15, 2027

This TA authorizes costs for groundwater monitoring & reporting, based on the Terracon TA proposal dated April 3, 2024. The total cost is $7,949.48 and this entire amount is fixed unit rate.

Dean Cox 850-245-8969 Contractor Terracon Consultants, Inc. Contractor

Contractor Donna Cline Contractor 813-321-0340

ERIC_5047

118 W. Grant Street Orlando

Sun State Supply

Contractor Contractor

✔ $ 7,949.48

$ 7,949.48

Scope of Work

Terracon Consultants, Inc.

Contractor

Digitally signed by Cline, Donna L DN: cn=Cline, Donna L, ou=General Users, email=Donna.Cline@terracon.com Date: 2024.05.20 15:07:51 -04'00'

Cline, Donna L

Mubeen Darji

Digitally signed by Jennifer Farrell Date: 2024.05.20 14:35:34 -04'00'

N/A

Task Assignment Notification/Change Order Deliverables and Invoice Schedule Attachment

WC TAFORM

Contract Number:

Task Assignment #:

Deliverables:

Deliverable Deliverable Due Date

Invoice Schedule:

Requirements for Invoice Submittal Amount to be Invoiced

TOTAL COST

Email report with activities description, field notes & forms, tables and figures with updated site data, certified laboratory report, waste manifest, conclusions, and recommendations. (Subtask 2 Groundwater Monitoring and Email Report Event 1)

06/30/2024

Email report with activities description, field notes & forms, tables and figures with updated site data, lab report, waste manifest, conclusions, and recommendations.

(Subtask 1 Proj Mgmt; Subtask 3 Groundwater Monitoring and Email Report Event 2)

06/30/2026

DEP approval of email report with activities description, field notes & forms, tables and figures with updated site data, lab report, waste manifest, conclusions, and recommendations. (Subtask 2 Groundwater Monitoring and Email Report Event 1)

$ 3,993.86

DEP approval of email report with activities description, field notes & forms, updated tables & figures, lab report, waste manifest, conclusions, and recommendations.

(Subtask 1 Proj Mgmt; Subtask 3 Groundwater Monitoring and Email Report Event 2)

$ 3,955.62

$ 7,949.48

HW687

DC004B