CN-370000-HW689-DC03DCO1.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. 8/17/2020

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:

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.

DC003D 1 HW689

Nicole Knutson 850-245-8763 APTIM Environmental & Infrastructure, LLC

Eric Kramer 407-287-3216

ERIC_4123

Former One Stop Cleaners

$ 49,693.33 $ 46,387.78

$ 3,600.00 $ 3,600.00

$ 53,293.33 $ 49,987.78

07/24/2026 07/24/2026 0

1 1 1

Kramer, Eric K Digitally signed by Kramer, Eric K Date: 2025.08.19 09:35:56 -04'00'

Jennifer Farrell

Digitally signed by Jennifer Farrell Date: 2025.08.19 09:16:31 -04'00'

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

Memorandum

TO: ERIC_4123

Former One Stop Cleaners

FROM: Nicole Knutson, Project Manager

SUBJECT: Negotiation Summary

HW689 DC003D-1

DATE: August 19, 2025

This Change Order authorizes APTIM to return to the former One Stop Cleaners to perform a vacuum step test. Additional labor hours and equipment costs have increased the total cost from $49,987.78 to $53,293.33. The difference between the original and revised cost estimate is $3,305.55. APTIM’s time, labor, and subcontractor costs for these activities have been reviewed and are appropriate. The level-of-effort and cost estimate are reasonable for the scope of services. Final deliverable due date remains May 22, 2026. Task completion date remains July 24, 2026.

SITE :

SUBTASK:

DATE:

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Engineer/Scientist 5 E. Kramer 8

Engineer/Scientist 5 G. Roberts

Engineer/Scientist 1 K. McDonald 28

Engineering Technician 2 J. Bell 34

Designer 2 S. Ferianc Technical Pub Specialist 3 H. Vining

TOTAL LABOR 70

VEHICLE TYPE RATE UNIT USEAGE TOTALS

Automobile $80.00 Day 0 $0.00 Van or Truck $120.00 Day 4 $480.00

TOTAL VEHICLE $480.00

PER DIEM STAFF RATE UNIT USEAGE TOTALS

Hotel 0 $110.00 Day 0 $0.00 Day 1-leave before 6:00 AM 0 $36.00 Day 0 $0.00 Day 1-Leave between 6 - Noo 0 $30.00 Day 0 $0.00 Day 1-leave before 6:00 PM 0 $19.00 Day 0 $0.00 Day 0 $36.00 Day 0 $0.00

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE TOTALS

$0.00

TOTAL $0.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC TOTALS

EPA Method TO-15 (VOC Soil Vapor) $200.00 1 0 $200.00

EPA Method 8260 (Halos Only) $73.00 0 0 $0.00

EPA Method 8260 (Halos Only/IDW) $73.00 0 $0.00

Sample Shipping (Small cooler) $110.00 1 $110.00

Sample Shipping (large cooler) $150.00 0 $0.00

TOTAL LAB $310.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables $40.00 Day 4 $160.00 Construction/O&M Kit $360.00 Day 4 $1,440.00

Construction O&M Supplies $75.00 Day 4 $300.00

TOTAL EQUIPMENT $1,900.00

Daily telemetry checks to verify the SVE system is operating as scheduled (3 hrs per month x 3 months = 9 hrs). SVE performance evaluation and system optimization (3 hrs). Travel to site and return (10 hrs.), Perform step test to optimize vacuum influence based on blower performance (4 hrs.), Compile data and present recommendations to maintain subsurface vacuum while minimizing blower operation (2 hrs.)

Monthly Base Work - {Mob (1 hr), Travel Round Trip (2 hrs), SVE O&M (5 hrs) {total = 8 hrs x 3 mo = 24 hrs}. Additional work (each quarter) includes SVE Vacuum Readings and collection of VOC Vapor Sample (total 4 hrs). Travel to site and return (2 hrs.), Perform step test to optimize vacuum influence based on blower performance (4 hrs.)

One Stop Cleaners

Qtr 2 Jul-Sept 2025

8/14/2025

Engineering evaluation of monthly data, direct staff engineer for system adjustments (3 hrs.). Submital of Quarterly reports of monthly O&M data collection sheets. (3 hrs.)

Engineering evaluation and guidance of step test data for compatibilty to operate the VFD controlled blower (2 hrs.).

SITE :

SUBTASK:

DATE:

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Engineer/Scientist 5 E. Kramer 2

Engineer/Scientist 5 G. Roberts

Engineer/Scientist 1 K. McDonald 16

Engineering Technician 2 J. Bell 6

Designer 2 S. Ferianc Technical Pub Specialist 3 H. Vining

TOTAL LABOR 24

VEHICLE TYPE RATE UNIT USEAGE TOTALS

Automobile $80.00 Day 0 $0.00 Van or Truck $120.00 Day 1 $120.00

TOTAL VEHICLE $120.00

PER DIEM STAFF RATE UNIT USEAGE TOTALS

Hotel 0 $110.00 Day 0 $0.00 Day 1-leave before 6:00 AM 0 $36.00 Day 0 $0.00 Day 1-Leave between 6 - Noo 0 $30.00 Day 0 $0.00 Day 1-leave before 6:00 PM 0 $19.00 Day 0 $0.00 Day 0 $36.00 Day 0 $0.00

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE TOTALS

$0.00

TOTAL $0.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC TOTALS

EPA Method TO-15 (VOC Soil Vapor) $200.00 0 0 $0.00

EPA Method 8260 (Halos Only) $73.00 0 0 $0.00

EPA Method 8260 (Halos Only/IDW) $73.00 0 $0.00

Sample Shipping (Small cooler) $110.00 0 $0.00

Sample Shipping (large cooler) $150.00 0 $0.00

TOTAL LAB $0.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables $40.00 Day 1 $40.00 Construction/O&M Kit $360.00 Day 1 $360.00

Construction O&M Supplies $75.00 Day 1 $75.00

TOTAL EQUIPMENT $475.00

One Stop Cleaners

Qtr 2 Jul-Sept 2025

8/14/2025

Engineering evaluation and guidance of step test data for compatibilty to operate the VFD controlled blower (2 hrs.).

Travel to site and return (2 hrs.), Perform step test to optimize vacuum influence based on blower performance (4 hrs.)

Travel to site and return (10 hrs.), Perform step test to optimize vacuum influence based on blower performance (4 hrs.), Compile data and present recommendations to maintain subsurface vacuum while minimizing blower operation (2 hrs.)

Proposed Scope of Work O&M Services & Groundwater Monitoring Former One Stop Cleaners DC003D, TACO #1 3303 University Drive, Coral Springs, Broward County, FL 33065 ERIC_4123 (Former FAC ID No. 069501160) Aptim Environmental & Infrastructure, LLC (APTIM) 8/15/25

The following proposed Task Assignment Change Order (TACO) #1 has been prepared to optimize the vacuum blower performance while maintaining a safe subsurface vacuum pressure that captures residual contaminant vapors.

Subtask 2: Quarter 1 O&M April – June 2025

No changes in scope or funding are proposed for this subtask

Subtask 3: Quarter 2 - July – September 2025

The purpose of the proposed scope of services is to perform a vacuum step test to generate data to allow reduced operation of the vacuum blower, while maintaining a safe sub-slab vacuum level that would capture contaminant vapors. The benefit of the proposed scope of work is to reduce the blower revolutions per minute (RPM) using the variable frequency drive (VFD) thereby reducing electrical consumption. The step test will consist of operating the blower at four different vacuum increments for a minimum of 30 minutes per increment. Each vacuum increment will record induced vacuum at eight monitoring points monitored that are normally checked during O&M visits. In accordance with WSCS guidance a vacuum of 0.1 inch of water column vacuum will be the minimum level.

Subtask 4: Semi-Annual Report

No changes in scope or funding are proposed for this subtask

Subtask 5: Utilities Quarters 1&2

No changes in scope or funding are proposed for this subtask

Subtask 6: Quarter 3 October – December 2025

No changes in scope or funding are proposed for this subtask

Subtask 7: Quarter 4 January – March 2026

No changes in scope or funding are proposed for this subtask

Subtask 8: Utilities Quarter 3&4

No changes in scope or funding are proposed for this subtask

Subtask 9: Annual Report

No changes in scope or funding are proposed for this subtask

APTIM proposes to perform this scope of work in accordance with the terms and conditions of contract No. HW689 executed December 21, 2021, between Florida Department of Environmental Protection and APTIM Environmental & Infrastructure, LLC. APTIM will begin the proposed scope of work upon written authorization.

If you have any questions, please contact us for clarification.