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.

DC002D 2 HW683

Sarah Aduwa 850-245-8973 Geosyntec

Tori Hood 561-922-1086

ERIC_5222

Colonial/Touch of Class Dry Cleaners

$ 52,255.35 $ 53,783.35

$ 52,255.35 $ 53,783.35

08/20/2024 08/20/2024 0

1 1

Geosyntec

Todd Kafka

Contract Manager

Todd Kafka, P.G. Digitally signed by Todd Kafka, P.G.

Date: 2024.04.17 11:23:31 -04'00'

Jennifer Farrell

Digitally signed by Jennifer Farrell Date: 2024.04.17 09:47:13 -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

Printed on recycled paper.

FLORIDA DEPARTMENT OF

Environmental Protection

Bob Martinez Center 2600 Blair Stone Road

Tallahassee, FL 32399-2400

Ron DeSantis Governor

Jeanette Nuñez Lt. Governor

Shawn Hamilton Secretary

To: HW683 Contract Negotiation File Colonial/Touch of Class Dry Cleaners Palm Beach County, Florida

ERIC_5222

From: Sarah Aduwa, Project Manager Date: April 15, 2024 Subject: Negotiation Summary

HW683_DC002D-2

This Task Assignment Change Order authorizes a cost decrease in accordance with the Geosyntec scope of work and cost estimate received on April 5, 2024. The total decrease is $1,528.

The TA completion date is August 20, 2024

Subtask 2 – Interior DPT Soil and Groundwater Sampling TACO-2: Due to the depth of the groundwater being higher than originally estimated, soil samples were only collected at three (3) depth intervals; therefore, TACO-2 deducts the costs of four (4) soil sample analysis. Additionally, TACO-2 deducts the costs of analysis by SPLP for VOCs since no samples exceeded leachability-based soil cleanup target levels.

LEVEL OF EFFORT/EXPENSE WORKSHEET (Haz. Waste Dept.)

SITE : Colonial Touch of Class Dry Cleaners SUBTASK 2: Interior DPT soil and GW sampling & MAGS + MW install

DATE: 4/5/24

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Senior Engineer A. Smith 8

Senior Staff Professional

T.Hood

Project Professional B. McBath

TOTAL LABOR 95

TRAVEL

TYPE RATE UNIT USAGE TOTALS

Truck $420.00 week 0 $0.00 Truck site visit (1), field work (3) $120.00 day 4 $480.00 Car $68.00 day 0 $0.00 subtotal $480.00

TOTAL TRAVEL $480.00

SUBCONTRACTOR (EQUIPMENT PROCUREMENT)

TOTAL SUBCONTRACTOR (EQUIPMENT) $0.00

SUBCONTRACTOR (SERVICES PROCUREMENT)

NAME PURPOSE RATE UNIT USAGE TOTALS

Drilling (Conventional) Groundwater Protection $6,998.00 Lump Sum 1 $6,998.00

$0.00 Lump Sum 0 $0.00 subtotal $6,998.00

Surveying Geotek - Utility Locate $750.00 Lump Sum 1 $750.00 subtotal $750.00

TOTAL SUBCONTRACTOR (SERVICES) $7,748.00

Site visit with Mob/demob (5); Technical support during field days (1 hrs per day = 3)

RPO and tenant notification (1); 811 ticket submittal (1); Site visit with Mob/demob (5);

Field Investigation: Field preparation (1); Mob/demob (1 hr/day, 2 days); Calibration of instruments (1 hr/day x 2 day = 2 hrs); MAGS well installation (2 hr/well x 4 wells = 8 hrs); Sample management/shipping (2); Oversight of DPT lithology, DPT groundwater sampling and installation of two monitoring wells (8 hrs/day x 2 day = 16 hrs) with Color Tec Screening; Interior as-built generation (2 hr); compile field notes and field deliverable (4 hrs)

Field preparation (1); Mark borings, oversee utility locate, and survey utilities including mob (10); Mob/demob (1 hr/day, 2 days = 2 hr); MAGS well installation (2 hrs/well x 4 wells = 8 hrs); Oversight of DPT lithology, DPT groundwater sampling and installation of two monitoring wells (8 hrs/day x 2 day = 16 hrs) with Color Tec Screening; Evaluating & interpreting field data (4) ; Sample management/shipping (2)

Colonial TOC (ERIC_5222)_RAE_CEF_DC002D-2 4/15/2024 Page 3 of 9 Subtask 2

SUBTASK 2: Interior DPT soil and GW sampling & MAGS + MW install

DATE: 4/5/24

LABORATORY COSTS

Rate # SAMPLES #QA/QC TOTALS

Method - Matrix VOCs - Soil 4 borings, 3 intervals $73.00 12 0 $876.00 VOCs - Soil no SPLP required $73.00 0 0 $0.00 SPLP Prep no SPLP required $55.00 0 0 $0.00 VOCs - GW 4 borings, 3 intervals $73.00 12 0 $876.00 encore sampler 4 borings, 3 intervals $16.00 12 0 $192.00 subtotal $1,944.00

Fast Turnaround Charges Percent

0% $0.00 0 $0.00

0% $0.00 0 $0.00

0% $0.00 0 $0.00 subtotal $0.00

Shipping

Large cooler (25 to 50 lbs) $150.00 2 $300.00

Small cooler (0 to 25lbs) $110.00 0 $0.00 subtotal $300.00

TOTAL LABORATORY $2,244.00

FIELD EXPENSES

ITEM RATE UNIT USAGE TOTALS

Drilling Related

Monitoring Well Installation Kit $325.00 day 1 $325.00

Soil Assessment Kit soil + MAGs install $175.00 day 2 $350.00

Soil Sampling Kit (through concrete) day 0 $0.00 subtotal $675.00

Analytical Related

Color Tec air sampling pump $20.00 day 2 $40.00

PCE detector tubes (pkg 10) High range $90.00 box 1 $90.00

0 $0.00

0 $0.00

0 $0.00

0 $0.00 subtotal $130.00

Expendables site visit, 3 days field work $40.00 day 4 $160.00

Other

MAGS supplies see quote $177.37 Lump sum 1 $177.37

$0.00 day 0 $0.00 subtotal $177.37

TOTAL FIELD EXPENSES $1,142.37

4/15/2024 Page 4 of 9 Subtask 2

SITE : Geosyntec Consultants SUBTASK 3: MAGS Testing, GW sampling, MW Survey

DATE: 4/5/24

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Principal

Senior Engineer A. Smith 4

Senior Staff Professional T. Hood

Project Professional B. McBath 9

TOTAL LABOR 48

TRAVEL

TYPE RATE UNIT USAGE TOTALS

Truck $480.00 week 0 $0.00 Truck $120.00 day 3 $360.00 Car $80.00 day 0 $0.00 subtotal $360.00

Mileage Costs 0.585 mile 0 $0.00 subtotal $0.00

Air Fare $1.00 Round Trip 0 $0.00 subtotal $0.00

Per diem ($35/75)

$35.00 days 0 $0.00

$75.00 days 0 $0.00 subtotal $0.00

TOTAL TRAVEL $360.00

SUBCONTRACTOR (EQUIPMENT PROCUREMENT)

TOTAL SUBCONTRACTOR (EQUIPMENT) $0.00

SUBCONTRACTOR (SERVICES PROCUREMENT)

NAME PURPOSE RATE UNIT USAGE TOTALS

Surveying Kugelmann Land Surveying $1,634.00 Lump Sum 1 $1,634.00 subtotal $1,634.00

TOTAL SUBCONTRACTOR (SERVICES) $1,634.00

MAGS testing, GW sampling, surveyor oversight

MAGS data evaluation (2); MAGS field support (2 hrs)

RPO and tenant notification x 3 (2 hrs); Field preparation (1); Mob/demob (3 days, 3 hrs); MAGS testing:

Calibration of instruments (1); MAGS equipment setup/step testing/breakdown (3 hrs/well x 2 wells = 6 hrs); Vapor sample management/shipping (1); GW sampling: mobe/demobe (1 hr); Instrument calibration (1 hr). Sample monitoring wells (1.5 hr/well x 3 wells = 5 hr). MW survey: mobe/demobe (1 hr); surveyor oversight (3 hrs); Compile field notes and prepare field deliverable (4 hrs)

Mob/demob (1 day, 1 hr); MAGS equipment setup and testing (3 hrs/well x 2 wells = 6 hrs); MAGS data evaluation (2);

4/15/2024 Page 5 of 9 Subtask 3

SUBTASK 3: MAGS Testing, GW sampling, MW Survey

DATE: 4/5/24

LABORATORY COSTS

Rate # SAMPLES #QA/QC TOTALS

Method - Matrix VOCs - GW Engineering Parameters 3 MWs - TOC, Nitrate, Sulfate, Iron $75.00 3 0 $225.00 VOCs - Soil $73.00 0 0 $0.00 SPLP Prep $55.00 0 0 $0.00 VOCs - GW MWs - 3 $73.00 3 0 $219.00 TO-15 - Vapor VOCs 4 MAGS wells $200.00 4 0 $800.00 IDW Sampling - TCLP , VOC, 4 RCRA $113.00 1 0 $113.00 Other $0.00 0 0 $0.00 subtotal $1,357.00

Fast Turnaround Charges Percent

0% $0.00 0 $0.00

0% $0.00 0 $0.00

0% $0.00 0 $0.00 subtotal $0.00

Shipping

Large cooler (25 to 50 lbs) $150.00 1 $150.00

Small cooler (0 to 25lbs) $110.00 1 $110.00

Other $0.00 subtotal $260.00

TOTAL LABORATORY $1,617.00

FIELD EXPENSES

ITEM RATE UNIT USAGE TOTALS

Drilling Related subtotal $0.00

Analytical Related

Shallow GW Sampling Kit $290.00 day 1 $290.00

Air Sampling Canisters (summas) $33.00 day 4 $132.00 subtotal $422.00

IDW Related

Drum $100.00 drum $0.00 other $0.00 0 $0.00 subtotal $0.00

Expendables $40.00 day 3 $120.00

Other

MAGS testing kit $500.00 Day 1 $500.00 subtotal $500.00

TOTAL FIELD EXPENSES $1,042.00

4/15/2024 Page 6 of 9 Subtask 3

SUBTASK 4: FDEP Teleconferences (2), RAE

DATE: 4/5/24

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Principal T. Kafka 5

Senior Engineer A. Smith 17

Senior Staff Professional T. Hood

Project Professional

M. Hensley 12

TOTAL LABOR 94

TRAVEL

TOTAL TRAVEL $0.00

SUBCONTRACTOR (EQUIPMENT PROCUREMENT)

TOTAL SUBCONTRACTOR (EQUIPMENT) $0.00

SUBCONTRACTOR (SERVICES PROCUREMENT)

TOTAL SUBCONTRACTOR (SERVICES) $0.00

LABORATORY COSTS

TOTAL LABORATORY $0.00

FIELD EXPENSES

TOTAL FIELD EXPENSES $0.00

FDEP teleeconferences prep and participate (3), RAE preparation (2)

FDEP teleeconferences prep and participate (3), PE preparation of RAE and sign/seal (8); develop conceptual remedy (4 hrs)

FDEP teleeconferences prep and participate (4),Prepare RAE (40 hr), cost estimating of remedial options (16 hr) figure preparation: soil results (2), GW results (1), soil vapor + MAGS results (2), DPT GW (2), GW elevation contour map (1); conceptual layout figures (4)

4/15/2024 Page 7 of 9 Subtask 4

SUBTASK 5: IDW management

DATE: 4/5/24

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Principal T. Kafka

Senior Engineer A. Smith

Project Professional B. McBath

Professional

Senior Staff Professional

T. Hood 5

Staff Professional

Project Professional M. Hensley

Admin P. Gallagher

TOTAL LABOR 5

TRAVEL

TYPE RATE UNIT USAGE TOTALS

Vehicle Rental Truck $410.00 week 0 $0.00 Truck $97.00 day 1 $97.00 Car $68.00 day 0 $0.00 subtotal $97.00

Mileage Costs 0.585 mile 0 $0.00 subtotal $0.00

Air Fare $1.00 Round Trip 0 $0.00 subtotal $0.00

Per diem ($35/75)

$35.00 days 0 $0.00

$75.00 days 0 $0.00 subtotal $0.00

TOTAL TRAVEL $97.00

SUBCONTRACTOR (EQUIPMENT PROCUREMENT)

TOTAL SUBCONTRACTOR (EQUIPMENT) $0.00

SUBCONTRACTOR (SERVICES PROCUREMENT)

NAME PURPOSE RATE UNIT USAGE TOTALS

IDW

Erwin Remediation Transport and dispose of 1 soil and 1 liquid drum $110.00 Lump Sum 2 $220.00

$0.00 Lump Sum 0 $0.00 subtotal $220.00

TOTAL SUBCONTRACTOR (SERVICES) $220.00

LABORATORY COSTS

Preparation of waste characterization profile (1 hr), preparation of manifests and arrange disposal (1 hr), mobilization/demob for IDW pickup (1 hr), observation of IDW pickup (2 hrs)

4/15/2024 Page 8 of 9 Subtask 5

SUBTASK 5: IDW management

DATE: 4/5/24

TOTAL LABORATORY $0.00

FIELD EXPENSES

TOTAL FIELD EXPENSES $0.00

4/15/2024 Page 9 of 9 Subtask 5

SUBTASK 2: Interior DPT soil and GW sampling & MAGS + MW install

DATE: 4/5/24

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Senior Engineer A. Smith 0

Senior Staff Professional

T.Hood

Project Professional B. McBath

TOTAL LABOR 0

TRAVEL

TYPE RATE UNIT USAGE TOTALS

Truck $420.00 week 0 $0.00 Truck site visit (1), field work (3) $120.00 day 0 $0.00 Car $68.00 day 0 $0.00 subtotal $0.00

TOTAL TRAVEL $0.00

SUBCONTRACTOR (EQUIPMENT PROCUREMENT)

TOTAL SUBCONTRACTOR (EQUIPMENT) $0.00

SUBCONTRACTOR (SERVICES PROCUREMENT)

NAME PURPOSE RATE UNIT USAGE TOTALS

Drilling (Conventional) Groundwater Protection $6,998.00 Lump Sum 0 $0.00

$0.00 Lump Sum 0 $0.00 subtotal $0.00

Surveying Geotek - Utility Locate $750.00 Lump Sum 0 $0.00 subtotal $0.00

TOTAL SUBCONTRACTOR (SERVICES) $0.00

Site visit with Mob/demob (5); Technical support during field days (1 hrs per day = 3)

RPO and tenant notification (1); 811 ticket submittal (1); Site visit with Mob/demob (5); Field Investigation: Field preparation (1); Mob/demob (1 hr/day, 2 days); Calibration of instruments (1 hr/day x 2 day = 2 hrs); MAGS well installation (2 hr/well x 4 wells = 8 hrs); Sample management/shipping (2); Oversight of DPT lithology, DPT groundwater sampling and installation of two monitoring wells (8 hrs/day x 2 day = 16 hrs) with Color Tec Screening; Interior as-built generation (2 hr); compile field notes and field deliverable (4 hrs)

Field preparation (1); Mark borings, oversee utility locate, and survey utilities including mob (10);

Mob/demob (1 hr/day, 2 days = 2 hr); MAGS well installation (2 hrs/well x 4 wells = 8 hrs);

Oversight of DPT lithology, DPT groundwater sampling and installation of two monitoring wells (8 hrs/day x 2 day = 16 hrs) with Color Tec Screening; Evaluating & interpreting field data (4) ;

Sample management/shipping (2)

Colonial TOC (ERIC_5222)_RAE_CEF_DC002D-1 (DELTA-2) 4/15/2024 Page 4 of 5 Subtask 2

SUBTASK 2: Interior DPT soil and GW sampling & MAGS + MW install

DATE: 4/5/24

LABORATORY COSTS

Rate # SAMPLES #QA/QC TOTALS

Method - Matrix VOCs - Soil 12 total samples - 4 borings, 3 intervals $73.00 -4 0 ($292.00) VOCs - Soil no SPLP required $73.00 -4 0 ($292.00) SPLP Prep no SPLP required $55.00 -16 0 ($880.00) VOCs - GW $73.00 0 $0.00 encore sampler 12 total samples - 4 borings, 3 intervals $16.00 -4 0 ($64.00) subtotal ($1,528.00)

Fast Turnaround Charges Percent

0% $0.00 0 $0.00

0% $0.00 0 $0.00

0% $0.00 0 $0.00 subtotal $0.00

Shipping

Large cooler (25 to 50 lbs) $150.00 0 $0.00

Small cooler (0 to 25lbs) $110.00 0 $0.00 subtotal $0.00

TOTAL LABORATORY ($1,528.00)

FIELD EXPENSES

ITEM RATE UNIT USAGE TOTALS

Drilling Related

Monitoring Well Installation Kit $325.00 day 0 $0.00

Soil Assessment Kit soil + MAGs install $175.00 day 0 $0.00

Soil Sampling Kit (through concrete) day 0 $0.00 subtotal $0.00

Analytical Related

Color Tec air sampling pump $20.00 day 0 $0.00

PCE detector tubes (pkg 10) High range $90.00 box 0 $0.00

0 $0.00

0 $0.00

0 $0.00

0 $0.00 subtotal $0.00

Expendables site visit, 3 days field work $40.00 day 0 $0.00

Other

MAGS supplies see quote $177.37 Lump sum 0 $0.00

$0.00 day 0 $0.00 subtotal $0.00

TOTAL FIELD EXPENSES $0.00

Colonial TOC (ERIC_5222)_RAE_CEF_DC002D-1 (DELTA-2) 4/15/2024 Page 5 of 5 Subtask 2

1200 Riverplace Boulevard, Suite 710 Jacksonville, Florida 32207

PH 904.858.1818

FAX 904.396.1143

www.geosyntec.com

30 June 2023 (rev. 5 April 2024)

Ms. Sarah Aduwa Florida Department of Environmental Protection Waste Cleanup Program 2600 Blair Stone Road Tallahassee, FL 32399-2400

Subject: Remedial Design Investigation/ Remedial Alternative Evaluation (RAE) Scope of Work and Level of Effort Task Assignment Change Order 2 (TACO-2) Colonial/Touch of Class Dry Cleaners 4552 Lake Worth Road Greenacres, Palm Beach County, Florida 33463 FDEP Facility ID ERIC_5222 Contract HW683, Task Assignment DC002D-1

Dear Ms. Aduwa, Geosyntec has prepared this Scope of Work (SOW) and Cost Effort Form/Level of Effort (CEF/LOE) Task Assignment Change Order (TACO) 2 for remedial design investigation activities to support the preparation of a Remedial Alternatives Evaluation (RAE) at Colonial/Touch of Class (Site) (Facility ID ERIC_5222) located in Greenacres, Florida. This scope of work was developed conceptually with FDEP staff during a teleconference on May 4.

TACO-2 revisions to the original SOW are provided in red font.

Geosyntec obtained three bids from licensed and qualified contractors for concrete coring, drilling, and investigation derived waste (IDW) transportation and disposal. A cost comparison is provided in Attachment A. Geosyntec recommends the following subcontractors based on lowest cost and/or earliest availability among the qualified bidders:

Underground utility locating – Geotek, LLC

DPT groundwater and soil sampling and monitoring well installation – Groundwater Protection, LLC.

IDW transportation and disposal – Erwin Remediation, Inc.

Ms. Sarah Aduwa 30 June 2023 (rev. 5 April 2024)

Kugelmann Land Surveying is recommended for surveying of the two (2) new monitoring wells.

Copies of the bids from each subcontractor are included in Attachment B.

Subtask 1 – Project Management

Subtask 2 – Interior DPT Soil and Groundwater Sampling

The remedial design investigation will include soil sampling, direct push technology (DPT) groundwater sampling, modified active gas (MAGS) well installation and testing, and monitoring well installation and sampling. We anticipate having one opportunity to enter each suite to collect as much data as practical. Therefore, we have assumed each of the invasive tasks will be conducted during a single mobilization (i.e., soil sampling, DPT groundwater sampling, MAGS well installation, monitoring well installation) that will be conducted under this subtask with the remainder of non-invasive tasks conducted in Subtasks 3 and 4. We have estimated Subtask 2 will be conducted over three 8 hour days for two Geosyntec personnel with support of two subcontractors (driller and private utility locator).

Geosyntec personnel will mobilize to the Site and access the two (2) adjoining suites (Jackson Hewitt Tax Services to the east and Link Staffing to the west) to identify potential locations for additional soil and groundwater sampling. The total width of the three suites is approximately 65 feet. Geosyntec will submit an 811 public utility locate ticket in advance of the visit. The attached Figure 1 illustrates our conceptual approach, pending additional information on the layout of each suite. Geosyntec will discuss with the tenants, access issues, logistics, and schedules for preliminary planning purposes. We will document flooring conditions and assess the ability to repair and/or replace the existing flooring following drilling activities. Modifications to the proposed sampling layout will be provided to FDEP via e-mail.

Utility Locating

Geosyntec personnel will mobilize to the Site to observe a private underground utility survey prior to the planned drilling activities. The geophysical investigation will be conducted using ground penetrating radar (GPR) and electromagnetic resonance (EMR) equipment. The identified utilities will not be marked in the suites, however their locations will be recorded using a hand-held GPS unit. Geosyntec will revise an existing utility figure to include utilities located during the utility survey that has not been previously identified. Blood Hound, LLC provided the lowest bid ($10 less than GeoTek), however EMR was not recommended for use. Geotek intends to use both GPR and EMR.

DPT Soil and Groundwater Sampling

Subtask 3 includes costs for Geosyntec personnel to mobilize to the Site to conduct soil sampling and groundwater sampling via direct push technology (DPT) at up to four (4) different locations as shown in the attached figure (two per tenant suite). A concrete core drill will be used to access soil under the building slab (concrete), and a small, dolly-mounted style DPT rig will be used due to access constraints inside the suites. Based on an assumed maximum depth-to-water (DTW) of 6 ft BLS, a minimum of four (4) soil samples (0 to 0.5, 0.5 to 2, 2 to 4, and 4 to 6 feet below land surface [ft BLS] or water table) is proposed for collection from each of the four (4) proposed soil sample locations (16 total samples). Historically, DTW has been observed as shallow as 2 ft BLS;

if this condition is present during drilling activities, one soil sample will be collected from the 2 to 4-foot interval sample, but the 4 to 6 foot interval will not. Soil samples will be collected by hand auger and/or DPT drilling depending upon accessibility.

Soil samples will be analyzed for the presence of volatile organic halocarbons (VOHs) via Environmental Protection Agency (EPA) Method 8260 by a National Environmental Laboratory Accreditation Program (NELAP) accredited, fixed-base laboratory. Soil samples will be screened with a photo-ionization detector (PID) organic vapor analyzer and the measurements recorded.

Supplemental soil samples will be collected from each location and depth interval (via Encore samplers) for analysis of VOHs by the synthetic precipitation leaching procedure (SPLP) should VOH concentrations exceed the leachability-based soil cleanup target levels. Based on the lack of soil detections observed at the Site previously, we have assumed that 25% (4 samples) of the sample will be analyzed by SPLP for VOHs.

DPT groundwater samples will be collected at 4-ft intervals approximately every 10 feet (i.e., 6 to 10 ft BLS, 16 to 20 ft BLS, etc.) to an estimated 30 ft BLS (or refusal) based on Site lithology, resulting in 12 potential groundwater samples. Sampling intervals may be adjusted based on observed depth to water, limitations of the drill rig and Site lithology. As a qualitative evaluation of the presence of VOHs, Geosyntec will screen approximately 2 groundwater samples per location using the Color Tec Groundwater Test Kit; these data will be used to help evaluate monitoring well screen depths, if practical. The 12 groundwater samples will be submitted to a NELAP-approved fixed-based laboratory for VOH analysis by EPA Method 8260.

TACO-2: Due to the depth of the groundwater being higher than originally estimated, soil samples were only collected at three (3) depth intervals; therefore, TACO-2 deducts the costs of four (4) soil sample analysis. Additionally, TACO-2 deducts the costs of analysis by SPLP for VOCs since no samples exceeded leachability-based soil cleanup target levels.

MAGS Well Installation

Geosyntec will install four (4), 2-inch (in.) diameter Schedule 40 polyvinyl chloride (PVC) MAGS wells (MAGS010 through MAGS013) by either hand auger or DPT to a depth of approximately 6 ft BLS (or 1-ft above the static water level if the depth to groundwater is different than historically observed) at the location of each of the soil sampling locations. Each MAGS well will be installed with 1-ft of riser and 5-ft of 0.01-in. slotted well screen extending from approximately 1 to 6 ft BLS. A 20/30 grade environmental sand filter pack will be placed from the bottom of the boring to 0.5 feet above the top of the well screen. The remaining annular space will be grouted to just below the top of casing. A temporary grout patch will be placed on top of a PVC cap that will be placed on each well to match existing grade and protect the well between installation and MAGS testing. A quote for MAGS supplies are included in Attachment C.

Monitoring Well Installation

Two monitoring wells (MW008 and MW009) will be installed inside 2 of the 6 soil borings advanced at the Site. Because we have assumed a single mobilization for these activities based on tenant consent, MW008 and MW009 will be installed before the DPT groundwater samples have been analyzed; however, the screened interval may be guided by the qualitative field screening performed on the groundwater samples using the ColorTec Groundwater Test Kit. For now, we have assumed the wells will be constructed of 1-inch diameter Schedule 40 PVC riser and either 5-ft or 10-ft of 1-inch diameter Schedule 40 PVC pre-packed well screen with a total target depth of 15 ft BLS.

The ability to set the wells inside boreholes will be dependent upon the magnitude of borehole collapse and the performance of the Mobile DPT rig to advance tooling through the Site’s lithology. If the formation does not collapse around the PVC during installation, a filter pack consisting of 20/30 silica sand will be placed around the well screen to approximately 0.5-ft above the top of the screen followed by at least a 0.5-ft thick, fine sand (30/65 silica sand) seal. The remaining annular space will be grouted to land surface with Portland Cement Type I/II and monitoring wells will be completed at the surface with a flush-mount 5-inch diameter manhole and a locking monitoring well cap. The monitoring wells will be developed until the discharge is relatively sediment-free.

Field Deliverable

Geosyntec will prepare a field deliverable as an approval/payment milestone. The deliverable will include copies of relevant field forms such as lithologic logs, well construction logs, and as-built markups of Site figures that includes new utility locating information, as necessary.

Subtask 3 – MAGS Testing, Groundwater Sampling, Monitoring Well Survey

Geosyntec personnel will re-mobilize to the Site to conduct MAGS testing of the 4 new MAGS wells and groundwater sampling of the 2 new wells and MW001. We will also observe the surveying of MW008 and MW009 under a separate mobilization based the availability of the selected surveyor.

MAGS Testing

Each of the two new MAGS wells will be tested for a period calculated to remove one, 10 to 15-ft radius of soil vapor volume using a regenerative blower. Testing will be performed after the grout has cured. The vacuum and flow rates used at each MAGS well will be recorded during the performance of a step test at each MAGS well which will include a minimum of three intervals of increasing vacuums to evaluate optimum air flow rates. Vacuum readings will be measured at adjacent monitoring wells, existing vapor monitoring points, and SVE wells at approximate 15-minute intervals, as practical, during MAGS testing to establish a radius of influence for each of the four new MAGS wells.

During testing, soil vapor will be monitored with an organic vapor analyzer equipped with a photoionization detector (PID) utilizing a 10.6 electronic volt lamp. Soil vapor samples (4 total) will be collected at the end of each MAGS test using a batch-certified “clean” Summa canister provided by the analytical laboratory. The soil vapor samples will be sent to a fixed-based laboratory for analysis of VOCs by the TO-15 method.

Groundwater Sampling

Geosyntec personnel will collect groundwater samples from MW001, MW008, and MW009. Prior to sampling, depth to water measurements will be collected from all 9 Site monitoring wells to evaluate groundwater flow direction. The monitoring wells will be sampled using a peristaltic pump in general accordance with FDEP Standard Operating Procedures (SOPs). The samples will be stored on ice and shipped to a NELAP approved, fixed-based analytical laboratory under chain of custody for analysis under standard turnaround times. The groundwater samples will be analyzed for VOHs by EPA Method 8260, total organic carbon (TOC) by EPA Method 9060, nitrate and sulfate by EPA Method 353.2 (or 300), and iron by USEPA Method 6020. We have assumed IDW will be containerized in existing drums on site following Subtask 2.

Monitoring Well Survey

This subtask includes costs for a Florida professional land surveyor to survey the 2 newly installed monitoring wells (MW008 and MW009). Costs have been included for Geosyntec to oversee the survey under a separate mobilization.

Field Deliverable

Geosyntec will prepare a field deliverable as an approval/payment milestone. The deliverable will include copies of relevant field forms such as MAGs testing logs, groundwater sampling forms, and equipment calibration forms.

Subtask 4 – FDEP Teleconference, Remedial Alternatives Evaluation (RAE)

Preliminary FDEP Teleconference

Geosyntec proposes to conduct a preliminary teleconference with FDEP to discuss the findings from completion of Subtasks 2 and 3 prior to advancing to the RAE. To facilitate this teleconference, Geosyntec will prepare the following:

Table and figure summarizing the soil sample VOH results

Table and figure summarizing the soil vapor VOH results

MAGS testing results table

Table and figure summarizing VOH results from DPT groundwater samples and monitoring well samples

Groundwater elevation contour map

Geosyntec will provide these documents to FDEP in advance of scheduling a teleconference to discuss the path forward to a RAE.

RAE

Following input from FDEP during the teleconference, Geosyntec will prepare a RAE to evaluate various remedial technologies for soil and groundwater treatment. The RDE/RAE will include but is not limited to an evaluation of technologies based on (i) long and short-term environmental impacts; (ii) implementability; (iii) operation and maintenance; (iv) reliability; (v) feasibility; and

(vi) costs.

Geosyntec will schedule a second teleconference with FDEP to discuss the findings of the RAE prior to completing the document. The goal of the teleconference will be to discuss and select an alternative remedial approach for soil and groundwater remediation. The RAE will include a summary of the conceptual Site model, cleanup criteria, remedial goals and objectives, a summary of evaluated technologies, an RAE table, and one conceptual design for the top selected alternatives for groundwater, and engineer estimates (order of magnitude) of costs.

Subtask 5 – IDW Management

This subtask includes costs associated with the transportation and disposal of IDW generated during this remedial design investigation. The soil and liquid IDW will be containerized in 55-gallon drums and staged on-Site at a location designated by Geosyntec. It is estimated that 1 soil and 1 liquid drum will be generated as part of each subtask.

The IDW will be sampled prior to profiling. One composite liquid and one composite soil sample will be collected and analyzed for VOCs and metals using the Toxic Characteristic Leaching Procedure. Geosyntec will review the generation of a waste characterization profile as well as the preparation of IDW manifests. Geosyntec will coordinate disposal arrangements for the drums assuming non-hazardous IDW. Analytical costs are included to establish the soil and groundwater profiles required by the selected waste hauler. We have assumed field oversight of the drum pickup is not necessary.

Invoice and Deliverable Schedule:

TACO-2 results in a reduction of $1,528.00 from the TA.

Subtask Deliverable Deliverable Due Date Invoice Amount

2, 3

Field deliverable for soil sampling, DPT sampling, and MAGS with summary figures, tables, and IDW manifest

30 October 2023 $34,882.67

1, 4, & 5 Submittal of RAE 21 June 2024 $17,372.68

Total $52,255.35

The above schedule is based on TA DC002D-1

As always, it is a pleasure to work with the FDEP. If you require any additional information or have any questions, please contact Tori Hood at 561.922.1086 (office).

Sincerely, Tori Hood Todd K. Kafka, P.G. (FL)

Senior Staff Professional Senior Principal Hydrogeologist

Attachments

ATTACHMENT A

BID EVALUATIONS

Sonic Drilling - 8 montoring wells

Company Quote Days Groundwater protection $6,998 2 Environmental Drilling Service $8,298 2 Cascade $12,380 3

Site Survey - TOC for 2 new monitoring wells

Company Quote (L/S) Kugelman Land Surveying $1,634 M.G. Vera & Associates $3,500 SurvTech Solutions $4,995

Underground Utility Locate Job Details - geophysical survey for utilities, 1 day

Company Quote (L/S) Days Bloodhound $740 1 GeoTek $750 1 Geoview $900 1

Investigative Derived Waste* Job Details - Transport and disposal - 1 liquid and 1 solid drums

Company Per GW Drum* Per Soil Drum* Total Erwin Remediation $110 $110 $220 Enviroserve $100 $120 $297 Hepaco $141.75 $210 $404.51

Notes:

1) L/S indicates lump sum.

2) Bold highlight indicates the selected subcontractor.

Subcontractor Evaluation Colonial Touch of Class Dry Cleaners - Greenacres, Florida

FDEP Site ID No. ERIC_5222

ATTACHMENT B

SUBCONTRACTOR QUOTES

DRILLING

REVISED DATE: 6/26/2023

ESTIMATE #: 623061-1

Geosyntec Consultants

ID QTY Unit Rate TOTAL

1 1 each 1,000.00$ 1,000.00$

2 Per Diem 2 night 300.00$ 600.00$

3 DPT Rig and Crew 2 day 1,750.00$ 3,500.00$

4 420 Indoor Rig/Concrete Coring Machine 1 each 600.00$ 600.00$

5 Materials: Sampling Expendable Points 16 each 3.00$ 48.00$

6 Materials: Standard Poly Tubing (1,000' Roll) 1 each 100.00$ 100.00$

7 Materials: Grout Borehole w/Concrete Cap 4 each 15.00$ 60.00$

8 Materials: 1" PVC Well Installation 30 each 4.00$ 120.00$

9 Materials: (2) 1" x 5' PVC .010 Prepack Screen, 3" Exp Point 2 each 170.00$ 340.00$

10 Materials: Donut Pad w/5" BD Completion 2 each 150.00$ 300.00$

11 Well Development (up to 1/2 hour w/pump) 2 each 50.00$ 100.00$

12 New Drums (Soil) Estimated 1 each 90.00$ 90.00$

13 New Drums (Water) Estimated 1 each 90.00$ 90.00$

14 Permits (Palm Beach County) 1 each 50.00$ 50.00$

Subtotal 6,998.00$

Todd Hodgson

Todd Hodgson TOTAL 6,998.00$ Partner

(2) 1" x 15' PVC MW w/10' of .010 Slot Prepack Screen, Donut Pad w/5" BD Completion, No Soil Sampling

(one MW in each suite location indoors.)

New Drums for All IDW

(4) DPT GW Profiling to 40' BLS at 4 Intervals (6-10', 16-20', 26-30', 36-40'), Standard Tubing to be used. Grout Borehole/Concrete Patch (All 4 are Indoors- 2 location Per Suite)

GW Profiling Locations and Well Installation Indoors (420 M)

Project Description:

If you have any questions concerning this proposal contact Todd Hodgson at (407) 426-7885 at Todd@drillprollc.com.

"Actual quantities used and days onsite will be invoiced"

Completion: 2 Days Depending on Water Pumping Time/Indoor Work

Locations must be accessible with 420 M Dolly Indoor DPT Rig

Damage to utilities on private property are the responsibility of the client Utility Locates on Private Property are the responsibility of the client

THANK YOU FOR YOUR BUSINESS!

DESCRIPTION

Mobilization

PROJECT

Colonial Touch of Class Cleaners 4552 Lake Worth Road

Tori Hood

CUSTOMER

Boca Raton, Florida 33487 Lake Worth, Florida 900 Broken Sound Pkwy., Ste. 200

(225) 955-1864

2300 Silver Star Road, Orlando, Florida (407) 426-7885 fax (407) 426-7586

Cascade provides management of investigation derived waste. Call us today for information on a full range of additional options to meet your drilling needs.

Signature of Authorized Cascade Representative

Name & Title of Authorized Cascade Representative

Date

Signature of Client/ Owner Authorized Representative

Name & Title of Authorized Representative and Company

Date

This quote is based on information provided by you and is valid for 45 days from the bid date. Your firm is responsible for 1) Obtaining any site specific permits, 2) Locating and clearly marking underground installations or utilities, 3) Furnishing dig Alert numbers at least three working days prior to scheduled start date and proof of private locating services, 4) Obtaining access to site with no overhead wires within 20' of the holes. On-site soil disposal, unless Cascade expressly assumes responsibility in writing. Cascade shall not be responsible for damages to underground improvements not clearly and accurately marked.

If bedrock, cobbles, flowing sands or other adverse or unsafe drilling conditions are encountered, drilling may continue on a time and materials basis or be terminated at the discretion of Cascade. Additional costs may apply if scope is significantly changed. Prices assume standard labor rates and no work hour restrictions. Proposal is subject to final review of terms and conditions.

Cascade will perform the Work as described in this proposal subject to the terms and conditions posted at unless MSA is already establishedhttps://cascade-env.com/resources/other/terms-and-conditions/ between Cascade and Client in which case MSA takes precedence over the aforementioned terms and conditions. By signing this proposal, Client agrees that this proposal together with the terms and conditions referenced above constitute a Subcontract. Client acknowledges that Client has received and agrees with all such documents in the form provided by Cascade. Terms and Conditions are posted and accessible at the website location set forth above.

UTILITY LOCATES

ESTIMATE

Blood Hound 6500 Technology Center Dr.

Suite 200 Indianapolis, IN 46278

Email: BHI@bhug.com bhug.com Website:

Phone #: 888-858-9830 888-858-9829 Fax #:

ESTIMATE

Blood Hound 6500 Technology Center Dr.

Suite 200 Indianapolis, IN 46278

Email: BHI@bhug.com bhug.com Website:

Phone #: 888-858-9830 888-858-9829 Fax #:

By signing this Estimate the client acknowledges that they accept the scope of work listed on the estimate, as well as the service rates provided and are providing Blood Hound with a Notice To Proceed (NTP) for the listed Project. If the scope of work should change while the work is in progress, any changes will be documented on the technician’s field notes and signed off on by the client. Signing this estimate also acknowledges that the client agrees to the terms and conditions as they relate to payment for services rendered.

Signature: ______________________________________________________________________________________

Printed Name: ___________________________________________________________________________________

Date Signed: ____________________________________________________________________________________

Payment is due at the time of service, unless you already have an account with us. If you do have an account with us, payment terms are Net 30 days, unless otherwise stated in a pre-approved contract. To learn more, please call the office at 888-858-9830.

PRICE MAY VARY BASED ON ACTUAL TIME ON SITE. The above pricing is based only on the information supplied by the customer.

If a site walk through has not been conducted, this may affect the price.

Please send all POs / Contracts to .BHUGContracts@bhug.com

We look forward to working with you.

GeoTek Services, LLC

23 June 2023

To: Adrian Smith Geosyntec Consultants, Inc.

900 Broken Sound Parkway NW, Suite 200 Boca Raton, FL 33487

From: GeoTek Services, LLC 4060 Sparrow Hawk Road Melbourne, FL 32934

RE: Scanning Services – 550 Lake Worth Road, Greenacres, Florida

Mr. Smith, GeoTek Services is pleased to respond to your request for scanning services at 550 Lake Worth Road located in Greenacres, Florida. We will scan up to 2,000 sq. ft.

with the goal of locating underground utilities. We can only scan the easily accessible and open areas for sub-surface objects. Note that we cannot scan beneath fixed objects such as obstructions, walls. or structures. We will scan as close as reasonably possible to fixed objects such as equipment, furniture, etc. Our deliverable will be marking paint and/or crayon indicating the location of potential underground objects. It is the client’s responsibility to protect and preserve all marks.

We will use both Electromagnetic Induction instruments as well as Ground Penetrating Radar (GPR) to detect objects below the surface. Due to the nature of sub-surface detection and the physical laws governing radio wave propagation, some buried objects may not be detectable due to depth, obscuration, or a weak radar signature. GeoTek Services will use industry standard best practices to locate sub-surface objects; however, some objects may not be detectable. Geotek Services does not guarantee that all underground objects can be found. GeoTek Services assumes no liability for any damages.

We request access to any as-built site plans of the scan areas prior to rendering services. Our quote for this project is $750.00. No out-of-pocket expenses are expected for this project. This quote is valid for sixty days.

Best Regards, Martin (Bud) Connor GeoTek Services, LLC

4060 Sparrow Hawk Road Melbourne, FL 32934-8525 info@GeoTekServices.com 321.473.7498

A Geophysical Services Company

5709 First Avenue South Tel.: (727) 209-2334 St. Petersburg, FL 33707 Fax: (727) 328-2477

June 30, 2023

Mr. Adrian Smith, P.E.

GeoSyntec Consultants 900 Broken Sound Parkway NW, Ste. 200

BOCA RATON, FL 33487

Subject: Proposal to Perform a Utility Designation Study

Colonial - Touch of Class Cleaners Greenacres, Florida GeoView Proposal Number: 10606p

Mr. Smith, The purpose of this letter is to transmit a proposal to complete a geophysical investigation at the subject site. This proposal is in response to your request for proposal made during your recent conversations with our office. GeoView, Inc.

appreciates the opportunity to provide our services on this project. We look forward to hearing from you soon.

Sincerely, GEOVIEW ASSOCIATES, INC.

Christopher Taylor, P.G.

Vice President Florida Professional Geologist Number 2256 Enclosure

Proposal

This document shall serve as a proposal for work to be performed by GeoView Associates, Inc. (GeoView) for GeoSyntec Consultants.

Description of Site

The project site is referred to as the Colonial - Touch of Class Cleaners and is located at 4550 Lake Worth Road in Greenacres, Florida. The purpose of the geophysical survey will be to determine the location of underground utilities within two tenant bays inside the building. The area is approximately 2000 square feet.

The location of the study area is provided on Figure 1.

Scope of Work

The geophysical survey will be conducted using ground penetrating radar (GPR) and conventional electromagnetic (EM) pipe and cable locators. The GPR survey will be conducted using either a Mala and/or a GSSI GPR system. The appropriate GPR antenna configuration and time range and processing parameters will be determined in the field by the project manager.

The EM survey will be performed using a Subsite 95R and/or a Radiodetection RD (8000, 8100 or 8200) system. As appropriate, the EM survey will be conducted using both passive and active modes. The passive mode is used to find cables and conduits carrying live power (50-60 Hz) and communication (29-33Hz) signals. For the active mode survey, a current is transmitted directly or broadcast into using electromagnetic induction a metal pipe or conduit and the path of the pipe/conduit is identified by following the signal with a portable receiver.

The active mode is used to trace out cast iron pipes, metal water and sewer lines, utilities that have trace wires, and inactive power and communication lines.

Presentation of Results

The location and estimated depths of underground utilities or any other identified structures shall be indicated on the ground surface using spray paint or other methods as specified by GeoSyntec Consultants. No report shall be prepared.

Compensation

Cost to complete the survey will be $900. If a scaled AutoCAD site map is required to document the study results, an additional fee of $200 will be added.

This price is inclusive of all charges associated with the project. Unless otherwise agreed upon, GeoView shall be compensated for all services within 30 days of invoice date. GeoView shall be paid in full regardless of whether the results of the geophysical survey are what GeoSyntec Consultants anticipated. If it is determined during the survey that the geophysical survey will not achieve the objectives of the project, GeoSyntec Consultants will immediately be notified. If a decision is made to discontinue the survey, only charges for time and materials costs to that point will be submitted.

These prices are based upon GeoView being able to access the site during normal business hours, Monday through Friday. It is also based upon the assumption that no site-specific training or drug testing will be required. If there are any such requirements, additional costs will be incurred.

Requirements of Client

GeoSyntec Consultants will provide a scaled map and digital file, if available, of the project site showing the boundaries of the project site, areas of specific concern and pertinent landmarks. GeoSyntec Consultants will also supply all available information regarding the presence and history of underground utilities at the project site (see limitations for further discussion). Unless otherwise requested, GeoSyntec Consultants will be responsible for the coordination of site access, traffic control, clearing of onsite obstructions or any other logistical consideration necessary to conduct the survey. If any test drilling, monitor well installation or other excavation activities are planned it will be the responsibility of GeoSyntec Consultants to submit a notification (dig ticket) to the appropriate 811 One-Call agency. It is recommended that such notification be filed sufficiently in advance so that GeoView will have the opportunity incorporate the 811 findings into their results.

Limitations

The objective of the geophysical survey is to determine the presence and configuration of underground utilities. However, the geophysical response of these features may be highly complex depending upon on the physical characteristics of the underground utilities, the electrical properties of the surrounding soils, the depth of burial of the utilities, and the proximity of the utilities to each other.

GeoView shall conduct the geophysical su -to-geophysical equipment in a manner consistent with the level of care and skill ordinarily exercised by members of the geophysical profession practicing in the same locality under similar g personnel are all certified GPR and conventional pipe and cable locator operators with extensive in-house training.

It is acknowledged that GeoView is not an 811 Sunshine One-Call or equivalent utility mark-out service. GeoView does not have access to any utility-related records for either public or private properties. It is the responsibility of GeoSyntec Consultants to obtain such records and provide to GeoView prior to the site investigation. GeoView will use these records during the site investigation and report to GeoSyntec Consultants any utilities that are shown on the site records but cannot be confirmed by GeoView. GeoView will not mark on the ground surface any utilities which it cannot confirm.

GeoView shall only be liable for the successful locating of underground utilities or any other underground structures whose presence is both known and indicated on site maps to be provided prior to the performance of the geophysical survey. Every attempt will be made to locate both known and unknown utilities within the survey area. However, GeoView will only be liable for utilities whose presence is known prior to the survey. GeoSyntec Consultants accepts that due to the inherent limitations of non-intrusive geophysical technologies GeoView cannot be held liable for damages to utilities that cannot identified using non-intrusive technologies.

GeoSyntec Consultants accepts that a non-intrusive utility designation study does not replace the need to employ widely accepted industry safety standards for subsurface work. Concerning the installation of well or test borings this standard of care includes post-holing or hand auguring at the planned test locations to the minimum depth at which underground utilities are anticipated at the project site. If absolute confirmation is needed to a specified depth that underground utilities are not present at a planned work location GeoView can provide vacuum excavation services. Pricing for such services is available upon request.

When GeoSyntec Consultants is working around indicated utilities, a minimum of 2 ft clearance from either side of the marked utility will be maintained. Unless otherwise indicated, a minimum vertical clearance of +/- 20 percent of the indicated depth shall also be maintained. GeoSyntec Consultants maintains the responsibility for manually exposing any indicated underground utility for absolute confirmation. Authorization and scheduling of the project is considered acceptance of these terms and conditions.

Other Terms and Conditions

Per Master Services Agreement with GeoSyntec Consultants.

Figure 1 Project Site Location

GEOVIEW ASSOCIATES, INC.

PROPOSAL ACCEPTANCE SHEET

Project Name: Colonial - Touch of Class Cleaners Project Location Greenacres, Florida GeoView Proposal #: 10606p Proposal Date: June 30, 2023 Description of Services Provide Utility Designating Services Project Cost: $900 see compensation page 3 Payment Terms: Per MSA

CHARGE INVOICE TO THE ACCOUNT OF:

Client: GeoSyntec Consultants Address: 900 Broken Sound Parkway NW, Ste. 200

BOCA RATON, FL 33487

Attention: Adrian Smith, P.E.

Phone (Office): (561) 922-1094 Phone (Cell):

Email: AASmith@Geosyntec.com

FOR APPROVAL OF CHARGES:

Firm:

Address:

Phone No.: Fax No:

Attention:

Special Instructions and/or Mutually Agreed Upon Changes to the Proposal:

In witness thereof, the parties hereto have made and executed this Agreement

Client: GeoView Associates, Inc.

Signature

By: By: Chris Taylor, P.G.

Title: Title: Vice President

Date Signed: Date Signed: June 30, 2023

General Description of Geophysical Methods

Ground Penetrating Radar (GPR)

The GPR survey will be conducted using a Mala or GSSI GPR system. The survey will be conducted with either a 500, 400 or 250 mega-Hertz antenna. The appropriate antenna will be determined in the field by the project manager. GPR will be able to provide both the position and estimated depth of both metallic and non-metallic underground utilities.

The ability of GPR to resolve a particular utility will be controlled by the following factors: 1) Depth of penetration of the GPR signal, 2) Depth of burial and diameter of the underground utility and 3) Electrical contract between the underground utility and the surrounding soils and 4) The complexity of the utility layout at the site. Due to one or a combination of these factors the GPR may not be able to identify all the utilities at the site. The diameter or composition of utilities cannot be accurately determined using GPR, though can be estimated. Estimates of burial depth are typically accurate to within +/- 20 percent, more accurate depths are possible if invert elevations for some on-site utilities are known.

Conventional Electromagnetic Pipe and Cable Locators

A Radiodetection System is used to locate underground utilities using…