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.

HW682

DC011A Completion June 23, 2023

ECT will conduct supplemental assessment activities and prepare an interim source removal plan for the Bolton Plaza site located in Orange Park, Florida. All work will be conducted in accordance with the scope of work and cost proposal submitted on February 22, 2023.

Kelly Crain 850-245-8953 Contractor Environmental Consulting and Technology, Inc. (ECT) Contractor

Contractor Mark A. Culbreth Contractor 813-289-9338

ERIC_4269

661 Blanding Blvd, Orange Park, Clay County

Bolton Plaza

Contractor Contractor

✔ $ 16,183.76

$ 16,183.76

Select One

Environmental Consulting and Technology, Inc. (ECT Contractor Mark A. Culbreth

Contract Manager Digitally signed by Mark Culbreth DN: CN=Mark Culbreth, E=mculbreth@ectinc.com Reason: I am approving this document Location: your signing location here Date: 2023.02.23 14:26:01-05'00' Foxit PhantomPDF Version: 10.1.6

Mark Culbreth

Kelly Crain

Kelly Crain Digitally signed by Kelly Crain Date: 2023.02.23 14:19:43 -05'00'

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

Draft Figures and Tables (Subtask 2) 04/19/2023

ISRP and Project Management (Subtask 3 and 1) 05/12/2023

FDEP Approval of Draft Figures and Tables (Subtask 2) $ 12,185.39

FDEP Approval of ISRP and Project Management (Subtask 3 and 1) $ 3,998.37

$ 16,183.76

HW682

DC011A

FFLORIDAA DEPARTMENTT OF

EEnvironmentall Protection

Bob Martinez Center

2600 Blair Stone Road Tallahassee, FL 32399-2400

Ronn DeSantis Governor

Jeanette Nuñez

Lt. Governor

Shawnn Hamilton Secretary

Memorandum

TO: HW682 Contract File Bolton Plaza

ERIC_4269

FROM: Kelly Crain, Project Manager SUBJECT: Negotiation Summary Task Assignment DC-011A DATE: February 23, 2023

This Task Assignment authorizes ECT to conduct supplemental soil assessment activities and prepare an ISRP in accordance with the Scope of Work dated February 22, 2023. ECT will collect soil samples from 11 locations at three intervals (total of 33 samples). The resulting data will be used to both complete site assessment and design an excavation as part of the ISRP.

ECT will ensure that the Department has a current site access agreement in place prior to initiating field activities.

After revisions to the scope of work, the final costs associated with this Task Assignment are $16,183.76. ECT may invoice according to the attached schedule.

FDEP COST ESTIMATEContractor: Environmental Consulting & Technology, Inc.

Date: 14-Feb-23

Task #: SubTask 1 Project Management

Site: Bolton Plaza SubTask 2 Supplemental Soil Assessment

Activity/Phase: SubTask 3 Interim Source Removal Plan

Project Manager: Mark Culbreth SubTask 4

SubTask 5

TTotals 1 2 3 4 Labor Rate Category

$80.12 PProject Manager 4 3.8 $80.12 Senior Principal Scientist (MC) 4 0.0 4.0 0 $37.13 Staff Engineer / Scientist (LL) 25 9.0 16.0 0 $26.54 GIS Analyst / Graphics (JV) 6 4.0 2.0 0 $22.44 Technician (BC) 18 17.5 0.0 0 $22.44 Technician (DF) 15 15.0 0.0 0 $31.45 Administrative (BJ) 6 4.0 2.0 0

Total Hours 77 3.8 49.50 24 0

Direct Labor $2,628.35 $302.38 $1,295.43 $1,030.54 $0.00

Overhead 125.30% $3,293.32 $378.88 $1,623.17 $1,291.27 $0.00 Gen & Admin 0.00% $0.00 $0.00 $0.00 $0.00 $0.00 Fringe 47.40% $1,245.84 $143.33 $614.03 $488.48 $0.00 Total Labor $7,167.51 $824.59 $3,532.63 $2,810.29 $0.00

Travel Vehicle Rental $480.00 $480.00 $0.00 $0.00 Per diem + Hotel $429.00 $429.00 $0.00 $0.00 Total Travel $909.00 $909.00 $0.00 $0.00

Subcontractor (Equipment Procurement) Subcontractor Subtotal $0.00 $0.00 $0.00 $0.00 Procurement Fee $0.00 $0.00 $0.00 $0.00 Total Subcontractor Cost $0.00 $0.00 $0.00 $0.00

Subcontractor (Services Procurement)

IDW $0.00 $0.00 $0.00 $0.00

Subcontractor Subtotal $0.00 $0.00 $0.00 $0.00 Handling Fee $0.00 $0.00 $0.00 $0.00 Total Subcontractor Cost $0.00 $0.00 $0.00 $0.00

Laboratory Analytical Costs $6,864.00 $6,864.00 $0.00 $0.00 Sample Shipping $70.00 $70.00 $0.00 $0.00 Total Laboratory $6,934.00 $6,934.00 $0.00 $0.00

Field Expenses Expendables $40.00 $40.00 $0.00 $0.00 Soil Sampling Through Concrete Kit $235.00 $235.00 $0.00 $0.00 Ice $6.50 $6.50 $0.00 $0.00 Trimble $175.00 $175.00 $0.00 $0.00 Total Field Expenses $456.50 $456.50 $0.00 $0.00

Subtotal $15,467.01 $824.59 $11,832.13 $2,810.29 $0.00 Completion Fee $716.75 $82.46 $353.26 $281.03 $0.00

Total Estimated Cost $16,183.76 $907.05 $12,185.39 $3,091.32 $0.00

Source Removal Plan

REV: 08/22 PRAC ECT Page 1

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Bolton Plaza SUBTASK 2 (Supplemental Soil Assessment)

DATE: 2/14/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Technician BC Prep for field work 1 Technician BC Mobilize to site 2.5 Technician BC Collect 33 soil samples from 11 borings 9 Technician BC Restore asphalt at 11 boring locations 2 Technician BC Demobilize and arrange sample delivery 3

Total 17.5

Technician DF Prep for field work 1

Technician DF Mobilize to site 1.5

Technician DF Collect 33 soil samples from 11 borings 9

Technician DF Restore asphalt at 11 boring locations 2

Technician DF Demobilize 1.5

Total 15

Staff Engineer LL 2

Staff Engineer LL 2

Staff Engineer LL 1

Administrative LL

Prepare HASP

Verification of property ownership, notify RPO of field activities

Prepare field activities plan

Prepare draft figures illustrating the proposed extent of source removal 4

Total 17

GIS Analyst JV Recreate figures 4

Total 4

Administrative BJ Recreate tables 4

Total 4

TOTAL LABOR 49.5

VEHICLE TYPE RATE UNIT USEAGE

Rental Truck BC $120.00 day 2 $240.00 Rental Truck DF $120.00 day 2 $240.00

TOTAL VEHICLE $480.00

PER DIEM STAFF RATE UNIT USEAGE

Per Diem BC $36.00 day 2 $72.00 Hotel BC $135.00 day 1 $135.00

Per Diem DF $36.00 day 2 $72.00

Hotel DF $150.00 day 1 $150.00

TOTAL PER DIEM $429.00

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIITS

0 $0.00

TOTAL $0.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC UNITS

USEPA Method 5035 Prep - Soil $7.00 33 $231.00 USEPA Method 8260 for VOHs - Soil $73.00 33 $2,409.00 USEPA Method 1312 SPLP Bottle Extraction - Soil $55.00 33 $1,815.00 USEPA Method 8260 for VOHs - Leachate $73.00 33 $2,409.00 Shipping Samples $70.00 1 $70.00

TOTAL LAB $6,934.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables $40.00 day 1 $40.00 Soil Sampling Through Concrete $235.00 day 1 $235.00 Ice $6.50 each 1 $6.50 Trimble $175.00 day 1 $175.00

$0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

$456.50TOTAL EQUIPMENT

FINAL --7/24/96

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Bolton Plaza SUBTASK:3 (Interim Source Removal Plan)

DATE: 2/14/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

GIS Analyst JV Finalize figures 2 Administrative BJ Finalize tables and report production 2 Staff Engineer LL QA/QC check of soil lab data and prepare draft source removal plan 16

Sr. Principal Scientist MC Develop conclusions and recommendations and prepare final source removal plan 4

TOTAL LABOR 24

VEHICLE TYPE RATE UNIT USEAGE

Rental Truck $120.00 day $0.00 Rental Car $80.00 day $0.00

TOTAL VEHICLE $0.00

PER DIEM STAFF RATE UNIT USEAGE

Hotel $36.00 day $0.00 Per Diem $135.00 day $0.00

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE UNIT COST UNITS

0 $0.00

TOTAL $0.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC Units

TOTAL LAB $0.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

$0.00TOTAL EQUIPMENT

FINAL --7/24/96

2/ /2023 ECT No. P23RA-9999

Ms. Kelly Crain Florida Department of Environmental Protection 2600 Blair Stone Road Tallahassee, Florida 32399-2400

Re: Proposal for Supplemental Assessment and Interim Source Removal Plan Bolton Plaza 661 Blanding Boulevard Orange Park, Florida

ERIC_4269

Contract No. HW682

Dear Ms. Crain:

Environmental Consulting & Technology, Inc. (ECT) has prepared this scope of work to conduct a supplemental soil assessment to refine the extent of impacted soils that need to be excavated and to prepare an Interim Source Removal Plan for the Bolton Plaza in Orange Park, Florida (Site). The 2020 Site Assessment conducted by Earth Systems included collection of soil samples which identified soils that could potentially generate leachate containing tetrachloroethene at a concentration greater than its groundwater cleanup target level (GCTL). Following conversations with the Florida Department of Environmental Protection (FDEP), it was determined that the horizontal extent of impacted soils should be delineated and excavated to the depth of the water table prior to the next natural attenuation monitoring (NAM) event.

Based on the soil analytical data provided in the November 11, 2021, Site Assessment Report for the Site, soils which may generate leachate containing volatile organic halogens (VOHs) at concentrations greater than their GCTLs are limited to soil borings SB-3, SB-5, SB-12, and SB-13. The lateral extent of impacted soils has not been fully assessed at the following depths of 0.5 feet below land surface (bls), 1 foot bls, and 3 feet bls. The proposed scope of work consists of the collection and analysis of soil samples at these depths to assess the lateral extent of impacted soils and to develop an Interim Source Removal Plan to be implemented at the site.

SubTask 1 Project Management

Mark Culbreth is the project manager; his hours are directly computed on the Cost Estimate Worksheet.

SubTask 2 Scope of Work

Because this site is new, to ECT, we are requesting time to prepare a Health and Safety Plan for this site. Future monitoring activities will rely on this Health and Safety Plan so it is anticipated that this plan will need to be prepared only once. Because this site is new to ECT, we are requesting additional time to generate base maps and other related figures as well as to recreate tables.

ECT proposes to collect additional soil samples for analyses to assess the lateral extent of impacted soils at depths of 0.5 feet bls, 1, and 3 feet bls. Soil samples will be collected from borings SB-6 through SB-9, SB-11, and SB-14 through SB-19. No samples are to be collected at borings SB-1, SB-2, SB-4, or SB-10. A total of 33 soil samples will be collected. Attachment B illustrates the soil boring locations.

All soil samples will be analyzed for VOHs using U.S. Environmental Protection Agency (EPA) Method 8260. A portion of each sample will be held for analysis in the event soil samples contain VOHs at concentrations greater than their default groundwater leachability-based soil cleanup target levels (SCTLs). Those samples that contain one or more of the VOHs at concentrations greater than their leachability-based SCTL will be subjected to the synthetic precipitation leaching procedure (SPLP) using USEPA Method 1312 and the leachate analyzed for VOHs using EPA Method 8260. Pursuant to FDEP guidance, equipment blanks will not be collected. Upon receipt of the laboratory report, ECT will evaluate the data and notify the FDEP which soil samples, if any, contained VOHs at concentrations exceeding their SCTLs and require further analysis.

Following collection of samples, the remaining soil will be placed back in their respective boreholes. If required, paver sand will be used to fill the borehole to grade. Asphalt will be restored at each borehole using an asphalt patch material.

Following receipt of the analytical data, ECT will prepare draft figures showing the extent of the soil impacts and proposed limits of the source removal and will submit these to the FDEP. ECT proposes to discuss these results with the FDEP to obtain concurrence that the extent of VOHs has been adequately assessed and that the FDEP agrees with the proposed extent of the source removal.

The scope of work is detailed in the attached Level of Effort Worksheet. A summary of SubTask 2 activities is included in Table 1. Note that two technicians will be performing the field activities.

Table 1. SubTask 2 Activities Summary Employee/Resource Activity Time 2 x Technicians Prepare for field work 2 hours 2 x Technicians Mobilize to site 4 hours 2 x Technicians Collect 33 soil samples from 11 borings 18 hours 2 x Technicians Restore asphalt at 11 boring locations 4 hours 2 x Technicians Demobilize and arrange sample delivery 4.5 hours Staff Engineer Prepare HASP 2 hours Staff Engineer Verification of property ownership, notify RPO of field activities 2 hours

Staff Engineer Prepare field activities plan and discuss the plan with the technician

1 hours

Staff Engineer Prepare draft figures of the proposed extent of source removal and discuss with FDEP.

4 hours

GIS Analyst Recreate figures. 4 hours Administrative Recreate tables. 4 hours

SubTask 3 Scope of Work

Following concurrence with the FDEP that the extent of VOHs in soils has been adequately assessed and FDEP agrees with the proposed extent of the source removal, ECT will prepare an Interim Source Removal Plan which will include historical soil data as well as soil data collected as part of Subtask 2 summarized in tables and on figures, along with attachments including field notes, soil boring logs, photographs, and any other pertinent documentation. The plan will provide details for the source removal. The scope of work is detailed in the attached Level of Effort worksheet and Table 2 provides a summary of the SubTask 3 activities.

Table 2. SubTask 3 Activities Summary Employee/Resource Activity Time GIS Analyst Finalize figures. 2 hours Administrative Finalize tables and report production. 2 hours

Staff Engineer QA/QC check of laboratory data and prepare of draft Interim Source Removal Plan

16 hours

Sr. Principal Scientist Develop conclusions and recommendations and prepare final Interim Source Removal Plan

4 hours

Deliverables

A summary of cost and deliverable due dates for each SubTask is provided at Table 3.

Table 3. Deliverable Schedule and Cost Subtask Deliverable Deliverable Date Invoice Amount

1. Project Management - Billed at project conclusion $907.05

2. Supplemental Soil Assessment

Draft figures and tables April 19, 2023 $12,185.39

3. Interim Source Removal Plan

Interim Source Removal Plan

May 12, 2023 $3,091.32

Total $16,183.76

Please let us know if you have any questions regarding this proposal.

Sincerely, ENVIRONMENTAL CONSULTING & TECHNOLOGY, INC.

Leif E. Layton, Ph.D. Mark A. Culbreth, P.G.

Staff Engineer Principal Scientist

LEL:MAC/baj