CN-370000-HW685-DC042B.pdf

Funding Information:

Org. Code E.O.

Object Code

Budget Entity Appropriation

Category Grant # Project # Year Amount

Additional Funding Information attached on separate page.

Rev. 8/26/2020

STATE OF FLORIDA

DEPARTMENT OF ENVIRONMENTAL PROTECTION

Task Assignment This Task Assignment (TA) is entered into between the Parties named below, pursuant to Contract Number: .

1. TA Number: TA Completion Date:

TA Description:

2. Parties State of Florida Department of Environmental Protection (Department)

Department Project Manager: Department Project Manager Phone:

Contractor Name: (Contractor ) ntractor’st ’s Project Manager: ontractor’s t’s Project Manager Phone:

3. Project Number:

(If different from TA Number)

Project Location(s):

Project Name:

4. As consideration for the services rendered by Contractor under the terms of this TA, the Department shall pay the Contractor on the following bases, up to the Total TA Value as indicated below:

Fixed Price:

Fixed Unit Rate: (Extended Price)

Cost Reimbursement:

Total TA Value:

5. The Parties agree to comply with the terms and conditions of the underlying the Contract, and the following attachments which are hereby incorporated by reference:

Attachment 1:

Additional Attachments (if necessary):

IN WITNESS WHEREOF, this TA shall be effective on the last date signed below.

State of Florida Department of Environmental Protection

CONTRACTOR Department

Name:

Title: Secretary or Designee

(Authorized Signature) (Authorized Signature)

Date:

Additional signatures attached on separate page.

HW685

DC042B March 29, 2025

This Task Assignment authorizes WSP to conduct a Site Assessment at and for the

HandiCraft Cleaners site in accordance with the May 2, 2024 Scope of Work, Cost Estimate, and Bid Documentation.

Patrick McGrane 850-245-8899 WSP USA Inc.

Matt Crews 904-363-3430

ERIC_4572

9735 Old Saint Augustine Road, Jacksonville, Duval County

HandiCraft Cleaners

$ 114,333.26

$ 114,333.26

Scope of Work

WSP USA Inc.

Matthew Crews

Environmental Engineer

6/14/2024

Crews, Matt (USMC700671) Digitally signed by Crews, Matt (USMC700671) Date: 2024.06.14 09:24:23 -04'00'

Teresa Booeshaghi

Teresa Booeshaghi Digitally signed by Teresa Booeshaghi Date: 2024.05.28 10:14:28 -04'00'

5/28/2024

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

SITE : Handi Craft Cleaners SUBTASK 2: Site Assessment Activities

DATE: 5/2/2024

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Senior Consultant (M. Crews) 3

Senior Project Sci/Eng (J. Spengler) 11

Staff Sci/Eng (L. Swindle) 119

Staff Sci/Eng (J. Whipple) 116

Senior Project Sci/Eng (D. McDaniels) 15

Sci/Eng/Admin (L. Kamikazi) 12

TOTAL LABOR 276

Event 2: Complete MAGS investigation per SAWP (1 day x 12 hours per day = 12 hours).

Data review, engineering calculations, and technical correspondence with DEP during MAGS as needed (3 hours per day x 1 day = 3 hours).

Event 1: Field event preparation (2 hours). Utility location, soil sampling; lithology boring;

MAGS well installation; DPT vertical groundwater profiling, survey, and monitoring well installation per SAWP (10 days x 10 hours per day = 100 hours). Event 3: Field event preparation (1 hour). Water levels, instrument calibration, and groundwater sampling; IDW management; and equipment decontamination (8 hours per day x 2 days = 16 hours).

Event 2: Field event preparation (3 hours). Complete MAGS investigation per SAWP (1 day x 12 hours per day = 12 hours).

Event 1: Utility location, soil sampling; lithology boring; MAGS well installation; DPT vertical groundwater profiling, survey, and monitoring well installation per SAWP (10 days x 10 hours per day = 100 hours). Event 3: Water levels, instrument calibration, and groundwater sampling; IDW management; and equipment decontamination (8 hours per day x 2 days = 16 hours).

Verification of property ownership prior to mobilization (1 hour). Prepare Health and Safety Plan (2 hours). Prepare and submit interim deliverable (8 hours).

VEHICLE TYPE RATE UNIT USEAGE

Truck - Event 1 $480.00 Per Week 2 $960.00

Truck - Event 2 $120.00 Per Day 1 $120.00

Truck - Event 3 $120.00 Per Day 2 $240.00

TOTAL VEHICLE $1,320.00

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE COST

GWP DPT Drilling $27,102.00 1 $27,102.00

GeoTek Utility Location $750.00 1 $750.00

SurvTech Survey $5,300.00 1 $5,300.00

TOTAL $33,152.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC

Event 1

Soil

PID/Hall Series Method 8021 Primary $110.00 44 0 $4,840.00

SPLP Bottle Extraction Method 1311/1312 Secondary $45.00 10 0 $450.00

PID/Hall Series Method 8021 Secondary $110.00 10 0 $1,100.00

DPT Groundwater

PID/Hall Series Method 8021 Groundwater $110.00 45 0 $4,950.00

Sample Shipping Large $150.00 5 $750.00

Event 2

MAGS

VOC Soil Vapor TO-15 Vapor $200.00 6 0 $1,200.00

Sample Shipping Large $150.00 1 $150.00

Event 3

Groundwater

PID/Hall Series Method 8021 Groundwater $110.00 8 0 $880.00

Sample Shipping Large $150.00 1 $150.00

TOTAL LAB $14,470.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

$40.00 Per Day 13 $520.00

$175.00 Per Day 3 $525.00

$290.00 Per Day 4 $1,160.00

$325.00 Per Day 3 $975.00

$16.00 Each 44 $704.00

$500.00 Per Day 1 $500.00

$75.00 Per Day 1 $75.00

$240.00 Package of 10 1 $240.00

$90.00 Package of 10 1 $90.00

$290.00 Per Day 2 $580.00

$0.30 Per Foot 230 $69.00

$3.00 Per Foot 8 $24.00

$100.00 Per Drum 1 $100.00

TOTAL EQUIPMENT $5,562.00

Tubing, Poly HDPE - Event 3

Tubing, Silicon 3/16 x 3/8 - Event 3

Drum, 55-gallon - Event 3

Shallow Groundwater Sampling Kit - Event 3

MAGS Investigation Kit - Event 2

Construction/O&M Supplies - Event 2

PCE detector tubes (Low range) - Event 2

PCE detector tubes (High range) - Event 2

Encore Sampler (25 gram for SPLP) - Event 1

Monitor Well Installation Kit - Event 1

Miscellaneous Expendables (Events 1, 2 & 3)

Shallow Groundwater Sampling Kit - Event 1

Soil Assessment Kit - Event 1

LEVEL OF EFFORT/EXPENSE WORKSHEET

SUBTASK 3: PFAS Related Costs and IDW T&D

DATE: 5/2/2024

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Senior Project Sci/Eng (J. Spengler) 11

Staff Sci/Eng (L. Swindle) 8

Staff Sci/Eng (J. Whipple) 4

Senior Project Sci/Eng (B. Lucero) 2

TOTAL LABOR 25

VEHICLE TYPE RATE UNIT USEAGE

TOTAL VEHICLE $0.00

PER DIEM STAFF RATE UNIT USEAGE

TOTAL PER DIEM $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE COST

Erwin IDW T&D $195.00 Per Drum 10 $1,950.00

Erwin Profile Fee $350.00 LS 1 $350.00

TOTAL $2,300.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC

IDW

TCLP Metals Soil Drums $135.00 1 $135.00

TCLP VOCs Soil Drums $210.00 1 $210.00

PID/Hall Series Liquids Drums $110.00 1 $110.00

Sample Shipping Small $110.00 1 $110.00

TOTAL LAB $565.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

TOTAL EQUIPMENT $0.00

Prepare CADD Figures with PFAS data for Site Assessment Report.

Complete forms to arrange for PFAS sample bottle order delivery and shipment from DEP Central Laboratory (1 hour). Characterize IDW and prepare waste profile for transportation and disposal of IDW (3 hours). Prepare and submit email summary with field documentation and certified laboratory report with PFAS results (3 hours). Prepare PFAS section for the draft Site Assessment Report (4 hours).

Collect samples from wells listed in Subtask 2 for PFAS analysis; collect equipment blank for PFAS analysis (2 hours). Package and deliver PFAS samples to shipping point for DEP Central Laboratory (2 hours). Prepare data tables with PFAS analytical results (4 hours).

Collect samples from wells listed in Subtask 2 for PFAS analysis; collect equipment blank for PFAS analysis (2 hours). Package and deliver PFAS samples to shipping point for DEP Central Laboratory (2 hours).

FINAL --7/24/96

LEVEL OF EFFORT/EXPENSE WORKSHEET

SUBTASK 4: Reporting

DATE: 5/2/2024

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Senior Consultant (M. Crews) 24

Staff Sci/Eng (J. Spengler) 50

Project Sci/Eng (B. Lucero) 12

Staff Sci/Eng (A. Strayer) 5

TOTAL LABOR 91

VEHICLE TYPE RATE UNIT USEAGE

TOTAL EQUIPMENT $0.00

PER DIEM STAFF RATE UNIT USEAGE

TOTAL VEHICLE $0.00

SUBCONTRACTOR COSTS

NAME PURPOSE COST

TOTAL PER DIEM $0.00

LABORATORY COSTS

PARAMETER RATE # SAMPLES #QAQC

TOTAL LAB $0.00

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

TOTAL $0.00

MAGS evaluation and reporting (16 hours). Develop conclusions and recommendations and prepare final Site Assessment Report (8 hours).

Data entry for site assessment results. Prepare draft Site Assessment Report

Prepare Site Assessment Report VOC and potentiometric figures.

Document production, Create PDF for Oculus.

FINAL --7/24/96

WSP USA Inc.

9428 Baymeadows Road, Suite 400, Jacksonville, FL 32256 wsp.com

May 2, 2024 Proposal No. 2024US210635

Mr. Patrick McGrane

Florida Department of Environmental Protection

Waste Site Cleanup Section

2600 Blair Stone Road, MS4520

Tallahassee, FL 32399-2400

RE: COST PROPOSAL FOR SITE ASSESSMENT

HANDI CRAFT CLEANERS

9735 OLD SAINT AUGUSTINE ROAD

JACKSONVILLE, DUVAL COUNTY, FLORIDA

FACILITY IDENTIFICATION NUMBER: ERIC_4572

PROPOSED TASK ASSIGNMENT: DC042B

Dear Mr. McGrane, WSP USA Inc. (WSP) is pleased to provide the Florida Department of Environmental Protection (DEP) with this proposal for conducting the site assessment at the above-referenced site. The site assessment activities will be completed in accordance with the Site Assessment Work Plan (SAWP), dated August 31, 2023. The SAWP was reviewed by the DEP and comments were provided to WSP in an electronic mail correspondence, dated

December 27, 2023, and a telephone conference call on December 27, 2023, with Breck Dalton and Patrick

McGrane of the DEP. WSP revised the scope of work in this proposal to address the following comments and recommendations detailed in the DEP correspondence. Specifically, the comments that will be addressed are as follows:

WSP will install at least five of the seven proposed shallow monitoring wells and perform a field top-of-casing survey relative to an arbitrary datum to determine the groundwater flow direction before completing the Direct

Push Technology (DPT) groundwater vertical profiling so any adjustments to the groundwater profiling locations can be made based on groundwater flow direction.

WSP will add an additional vacuum monitoring point (VMP) (MAG010) between MAG001 and MAG002.

WSP will add an additional soil sampling location (SB010) to be paired with MAG010.

WSP will add an additional DPT sampling location (DPT-9) close to the building and in the anticipated downgradient direction of the drycleaning machine.

WSP will add an additional shallow monitoring well (MW007S) close to the building and in the anticipated downgradient direction of the drycleaning machine.

A copy of the DEP December 27, 2023, email is included in Attachment A.

Mr. Patrick McGrane Proposal No. 2024US210635

Florida Department of Environmental Protection May 2, 2024

Site assessment activities, including the preparation of a Site Assessment Report, will be completed in accordance with requirements set forth in Chapter 62-780.600, FAC. Field activities will be completed in accordance with DEP

Standard Operating Procedures (SOPs) for Field Activities (DEP SOP-001/01), dated January 2017 (effective

April 16, 2018).

This proposal includes a brief description of the proposed scope of services, level of effort sheets, and a Cost

Estimate Form that summarizes the costs of the proposed services. A more detailed description of the scope of work can be observed in the August 2023 SAWP. This project is subdivided into four separate subtasks, as described below.

SUBTASK 1 PROJECT MANAGEMENT

To facilitate project quality and satisfactory completion of the proposed scope of work, all aspects of this project will be overseen by an experienced project manager. The project manager will be responsible for the schedule, budget, invoicing, project activities, and communications with DEP and the field team. Project management will include coordination of field activities; resource allocation to confirm the work is conducted by qualified professionals in accordance with the project schedule; cost control and tracking of the budget status; and submittal of project invoices in accordance with DEP Waste Site Cleanup Section requirements. The project manager will oversee the work so that it is conducted in a manner that is consistent with the requirements of the DEP-approved task assignment.

SUBTASK 2 SITE ASSESSMENT ACTIVITIES

Event 1 Site Access, Utility Clearance, Permits, Lithology Boring, Soil Sampling, MAGS Well and VMP Installation, DPT Vertical Groundwater Profiling, Monitoring Well Installation, and Surveying

Site Access, Utility Clearance, and Permits

Following authorization to proceed, WSP will coordinate with the real property owner and tenant for access to complete the scope of work. WSP will obtain the applicable local, county, and state-required permits prior to implementing the proposed scope of work. The location of underground utilities will be identified and marked.

Sunshine State One Call, a utility location service provider, will be contacted at least three working days (72 hours) before any subsurface work begins. Given that work will be conducted on private property, Sunshine State One Call might not be able to provide details regarding specific utilities in the area where site restoration activities will be conducted. Therefore, WSP will use a private utility location company to locate and map shallow subsurface anomalies present within the proposed site restoration areas.

Lithology Boring

WSP proposes to oversee the use of a DPT drill rig to advance one lithology boring under the direct supervision of a WSP geologist. The boring will be advanced to a depth of 50 feet below ground surface (bgs), or refusal, whichever is encountered first. The purpose for completing the lithology boring is to determine continuous lithologic profiles, which will be used to identify potential aquitards, and determine the thickness of any low-permeability clay zones and any zones of higher permeability. The lithology boring will be installed outside of the suspected impacted area of the site. The approximate location of the lithology boring is shown on Figure 5.

Soil Sampling

WSP proposes to collect soil samples from 11 soil borings (SB001 through SB011) located in the vicinity of current or former potential drycleaning contaminant source areas. The proposed soil boring locations are shown on

Figure 5.

At each of the soil boring locations, WSP will use a decontaminated stainless-steel hand auger to collect discrete soil samples from the ground surface to the top of the water table. WSP will collect soil samples from 0 to 0.5 feet bgs and 0.5 to 2.0 feet bgs. If the depth-to-groundwater is greater than 2 feet bgs, then soil samples will be collected in

2-foot intervals to a depth of 10 feet bgs, or the top of the water table, whichever is encountered first (e.g., 2.0 to

4.0 feet bgs, 4.0 to 6.0 feet bgs, etc.). If the depth-to-groundwater is greater than 10 feet bgs, then soil samples will be collected in 5-foot intervals to the top of the water table (e.g., 10 to 15 feet bgs, 15 to 20 feet bgs, etc.). WSP will collect a primary soil sample from the bottom of each depth interval. WSP will also collect a split soil sample using a 25-gram EnCore sampler. The split samples will be placed on hold pending review of the primary sample results.

For cost estimating purposes, WSP has assumed the depth-to-groundwater is 6 feet bgs and samples will be collected from the following depth intervals: 0 to 0.5 feet bgs; 0.5 to 2.0 feet bgs; 2.0 to 4.0 feet bgs; and 4.0 to

6.0 feet bgs.

WSP will place the soil samples on ice and ship the coolers to a Florida Department of Health and National

Environmental Laboratory Accreditation Program-certified fixed-based laboratory, along with the completed chain of custody documentation. The laboratory will analyze the primary samples for the full list of volatile organic compounds (VOCs) using Environmental Protection Agency (EPA) Method 8260. If the results exceed a DEP Soil

Cleanup Target Level for leachability, based on groundwater criteria, for any constituent, WSP will request DEP approval to analyze the split samples using the Synthetic Precipitation Leaching Procedure (SPLP), if necessary.

For cost estimating purposes, WSP has assumed up to 10 split samples will be analyzed using the SPLP.

Unless the soil boring is converted to a MAGS well, the boreholes will be filled with sand. If the boring was advanced into a concrete or asphalt surface, the borehole will be filled with sand to approximately 6 inches below grade, followed by a layer of concrete or asphalt patch (as appropriate) to match the existing surface.

MAGS Well and VMP Installation

WSP will convert ten of the soil borings to MAGS wells (MAG001 through MAG010). WSP will use locations

MAG001, MAG002, MAG004, MAG005, MAG007, and MAG008 as MAGS wells during the investigation. WSP will use the remaining wells as VMPs during the investigation. WSP has assumed a 20-foot vacuum radius of influence

(ROI) for the purposes of MAGS well and VMP spacing. The proposed MAGS well and VMP locations are shown on Figure 6.

The MAGS wells will be constructed of 2-inch diameter, Schedule 40 PVC with 0.010-inch machine-slotted screens.

The top of the well screen will be approximately 1 foot bgs. The bottom of the well screen will be set approximately

1 foot above the water table. Following installation of the wells, WSP will fill the annular space in the borehole with

20/30 grade silica sand to a level approximately 0.5 feet above the top of the well screen. WSP will then add a layer of bentonite grout to the surface to create a seal. Each of the risers will be cut just below final grade and capped with a water-tight expandable locking plug. The MAGS wells will be housed within a steel manhole cover and completed at the surface within a flush-mounted concrete pad. For cost estimating purposes, the MAGS wells will be installed to a total depth of 5 feet bgs (1 foot above the estimated water table) and screened from 1 to 5 feet bgs.

DPT Vertical Groundwater Profiling

WSP proposes to complete vertical groundwater profiling at 9 locations using DPT (DPT-1 through DPT-9). Based on an assumed depth to groundwater of 6 feet, WSP will collect groundwater samples at each of the proposed locations at the following 10-foot depth intervals: 6-10, 16-20, 26-30, 36-40, and 46-50 feet bgs (5 samples per location). WSP has selected the DPT vertical profiling locations to be in the vicinity of suspected source areas and in presumed upgradient and downgradient locations. The proposed locations are shown on Figure 7.

WSP will collect groundwater screening samples using DPT tooling (4-foot-long wellpoint screens). Purge volumes and sample collection data will be recorded on field data sheets. WSP will collect the samples in a top (shallow) to bottom (deep) method. The samples will be analyzed at a fixed-base laboratory for the full list of VOCs using EPA

Method 8260.

Monitoring Well Installation

WSP has assumed the permanent monitoring well locations will be installed onsite in the vicinity of suspected source areas and in presumed upgradient and downgradient locations. The wells will be installed by a Florida licensed well driller. Well construction will be consistent with DEP and St. Johns River Water Management District well construction criteria. The drilling contractor will be responsible for decontaminating the drilling rods, hand augers, and other relevant equipment prior to arrival at the site and after each well is installed. The proposed locations are shown on Figure 7.

WSP proposes to install seven shallow monitoring wells (MW001S through MW007S) and screen the wells across the water table. The well screens will consist of 10 feet of 1-inch diameter, Schedule 40, pre-packed well screen

(0.010 inch slot size). The well risers will consist of 1-inch diameter, Schedule 40 PVC. The well risers will be connected to the screens with flush-threaded joints, using an appropriate length to reach the ground surface. The annular space between the borehole wall and the pre-packed well screen will be filled with a 20/30 grade silica sand filter pack to a level above the top of the well screen (minimum 1 foot above). A minimum one-foot thick, fine (30/65) grade silica sand seal will be placed above the sand filter pack, and the remainder of the annular space will be filled with a Portland Cement Type II grout seal. For cost estimating purposes, WSP has assumed the shallow monitoring wells will be installed to a total depth of 15 feet bgs (i.e., screened from 5 to 15 feet bgs).

At this time, WSP proposes to install one intermediate zone monitoring well (MW001I) in or near a suspected source area. The intermediate well will be installed in a similar manner to the shallow well (see above), except the proposed total depth is 50 feet. For cost estimating purposes, WSP has assumed the intermediate zone monitoring well will be installed to a total depth of 50 feet bgs (i.e., screened from 40 to 50 feet bgs).

The monitoring wells will be finished with flush-mounted surface completion and an 8-inch diameter bolt-down steel cover. The risers will be capped with water-tight expandable locking plugs. A 2-foot by 2-foot concrete pad will be constructed around the well to secure the flush-mounted vault, which will be sloped away from the well to prevent surface water infiltration. To remove fine-grained particles in the filter pack and those adhered to the borehole walls, and to establish a good hydraulic connection with the aquifer, the monitoring wells will be developed until the purged water remains visibly clear and free of suspended particulate matter.

Surveying

Following installation of the permanent monitoring wells, WSP will subcontract a Florida-licensed professional land surveyor to provide a survey of the property boundary; soil sampling locations; MAGS well and VMP locations; DPT vertical groundwater profiling locations; and monitoring well locations, including the top-of-well casing elevations

(+/- 0.01 feet accuracy). The survey final product will contain the following features:

The survey will be done in relation to the National Geodetic Vertical Datum (NGVD) of 1929 or the North

American Vertical Datum of 1988 (NAVD 88).

The horizontal datum will be in State Plane NAD83.

The operating units will be in feet.

The benchmark (monument) and vertical datum will be referenced.

Event 2 MAGS Investigation

Once the MAGS wells have been installed, WSP will complete the MAGS investigation. The MAGS investigation results will be used to evaluate the presence and locations of potential source areas and to identify locations and analyses for additional discrete soil sampling. The results may also be used for a full-scale soil vapor extraction system design, if warranted.

The MAGS investigation will involve fitting a regenerative blower (Fuji Electric Model VFC508P-2T, 2.5 hp, single phase) to a MAGS well to extract soil vapor from vadose zone soil. WSP will analyze the extracted soil vapor using an OVA-PID and/or Draeger colorimetric detector tubes. The blower will be capable of a flow rate of 154 standard cubic feet per minute at a vacuum of 80 inches of water (inches H20) under ideal conditions. A portable generator will supply power to the blower. The connection between the MAGS wellhead and blower will be made using 2-inch or 4-inch diameter vacuum-rated flexible PVC tubing and Schedule 40 PVC pipe. Vacuum gauges, a flowmeter, filter, and sample ports will be installed in line.

WSP will test each of the MAGS wells (MAG001, MAG002, MAG004, MAG005, MAG007, and MAG008) for an estimated 30 minutes to one hour. At a minimum of one location, WSP will perform step-increase vacuum tests, which will consist of a low, medium, and high vacuum setting. WSP will measure subsurface vacuum pressure at varying distances from the primary extraction points using nearby MAGS wells and monitoring wells, provided the monitoring well screen is sufficiently exposed, to evaluate subsurface flow characteristics. This data will be used to estimate the effective field ROI, soil permeability, hydraulic conductivity, pore volume, and purge time. The project engineer will perform calculations during the field event to confirm the time required to evaluate one pore volume of soil vapor based on the measured ROI and actual vapor flow rate. Based on these calculations, the time that vapor is extracted at each MAGS well will be adjusted accordingly. An OVA-PID and colorimetric detector tubes will be used to monitor soil vapor extracted from the MAGS sampling point.

Near the end of the MAGS extraction at each location, one soil vapor sample will be collected to provide a general assessment of the types and concentrations of remaining chlorinated solvents in soil. The samples will be collected in Summa Canisters (Tedlar bags if Summa Canisters are not available) and submitted to a fixed-base laboratory for VOC analysis using EPA Method TO-15.

Event 3 Groundwater and IDW Sampling

Groundwater Sampling

WSP will mobilize to the site and collect groundwater samples from the following monitoring wells: MW001S, MW002S, MW003S, MW004S, MW005S, MW006S, MW007S, and MW001I.

Prior to groundwater sampling, the water level depth will be measured at each well to determine groundwater elevations. Prior to collecting the groundwater sample, each well will be purged and field parameters including temperature, pH, specific conductance, dissolved oxygen, turbidity, and oxidation-reduction potential will be monitored. Purge volumes and field parameters will be recorded on field data sheets, and the field monitoring mended procedures. During the sampling event, the locks and well caps will be inspected for damage or degradation and replaced, as necessary. Relevant sampling equipment will be decontaminated after each sample is collected.

Groundwater samples will be collected using low flow sampling methods. The groundwater samples will be placed in laboratory-supplied containers, labeled with a unique identification number attached to the outside of the sample container, and preserved on ice in a laboratory-provided cooler at a maximum temperature of four degrees Celsius.

WSP will also collect an equipment blank sample by pumping (peristaltic and submersible pump) PFAS-free water through silicon and/or HDPE tubing and into laboratory-supplied containers.

WSP will submit one set of samples from each well to a fixed-base laboratory for analysis of the full list of VOCs using EPA Method 8260. WSP will submit a second set of samples from each well and an equipment blank to the

DEP Central Laboratory for analysis of per- and polyfluoroalkyl substances (PFAS) using DEP SOP: LC001-3.

Interim Deliverable

Upon completion of Subtask 2, an e-mail deliverable will be submitted and will include copies of the field data sheets, equipment calibration forms, field notes, laboratory analytical reports, and laboratory chain-of-custody documentation.

SUBTASK 3 PFAS-RELATED COSTS AND IDW TRANSPORTATION & DISPOSAL

WSP will include costs associated with the PFAS monitoring activities in this subtask. These activities include completing bottle order requests with the DEP Central Laboratory; waste characterization and waste profiling;

packaging and shipping PFAS samples to the DEP Central Laboratory; labor involved in sampling wells associated with PFAS analysis only; and investigation-derived waste (IDW) transportation and disposal.

Quality Assurance/Quality Control

WSP will collect one equipment blank sample during the groundwater sampling event. The equipment blank will be collected by pumping (peristaltic pump) PFAS-free water through silicon and/or HDPE tubing and into laboratory-supplied containers. The equipment blank will be analyzed for PFAS using DEP SOP: LC001-3 (or similar).

Investigation Derived Waste

WSP will containerize the soil and liquids generated during site assessment activities in 55-gallon drums; label the waste as IDW; and secure the drums onsite to await waste characterization, profiling, and disposal acceptance.

WSP will collect a sample of the IDW soil and the IDW liquids for waste characterization purposes. WSP will submit one set of samples to a fixed-base laboratory. The IDW soil sample will be analyzed for the Resource Conservation and Recovery Act metals and full list VOCs using Toxicity Characteristic Leaching Procedure. The IDW liquids sample will be analyzed for the full list of VOCs using EPA Method 8260. WSP will submit a second set of samples

(soil and liquids) to the DEP Central Laboratory for PFAS analysis using DEP SOP: LC001-3 (or similar). For cost-estimating purposes, WSP has assumed that the IDW can be transported and disposed of as non-hazardous waste at an approved facility. For cost estimating purposes, WSP has included containerization, transportation, and disposal of 10 55-gallon drums of non-hazardous soil and liquids.

Interim Deliverable

Upon completion of Subtask 3, an e-mail deliverable will be submitted for the PFAS samples and include copies of the field data sheets, equipment calibration forms, field notes, laboratory analytical report, laboratory chain-of-custody documentation, and updated data tables and figures.

SUBTASK 4 REPORTING

Upon completion of the field activities, WSP will prepare a Site Assessment Report. The Site Assessment Report will include a description of the sampling procedures, evaluation of the analytical results, comparison of current to historical data, tabulated summary of the current and historical analytical data, a site map showing the groundwater analytical results, water level elevation information in tables and figures, laboratory analytical data, conclusions, and recommendations.

HEALTH AND SAFETY

and federal regulations, including Occupational Safety and Health Administration (OSHA) regulatory requirements.

The specific health and safety procedures will be addressed in a site-specific Health and Safety Plan (HASP). The

HASP will include Safety Data Sheets, maps and directions to the nearest hospital, project personnel and emergency contact information, general safety procedures, and control measures for the potential physical, chemical, and biological hazards at the site. Personnel working in potentially impacted areas will have completed

40 hours of Hazardous Site Health and Safety Training as required by OSHA 29 CFR 1919.120 (e) regulations, and annual 8-hour refresher training within one year prior to working at the site. WSP anticipates the field activities can be completed in Level D personal protective equipment.

Site workers will attend daily job safety briefings at the beginning of each field day to discuss upcoming site activities.

Additional job safety briefings will be completed as required by changes in site conditions and/or activities.

COST AND SCHEDULE

The estimated cost to complete the proposed scope of work is $114,333.26. WSP anticipates initiating site assessment activities in June 2024. The level of effort sheets and cost estimate form are included in Attachment B.

The IDW disposal subcontractor quotes are included in Attachment C. The following table summarizes the proposed costs and deliverable schedule.

Task Proposed Cost Proposed Schedule/Deliverables

Subtask 1 Project Management $ 6,145.57 December 14, 2024

Subtask 2 Site Assessment Activities $ 88,418.70 September 13, 2024 (E-mail summary with field documentation and certified laboratory analytical report for chlorinated VOCs)

Subtask 3 PFAS Related Costs and IDW Transportation and Disposal

$ 6,146.37 October 11, 2024 (E-mail summary with field documentation and certified laboratory analytical report for PFAS and non-hazardous waste manifest for IDW)

Subtask 4 Reporting $ 13,622.62 November 8, 2024 (Site Assessment Report)

Total/Completion Date $114,333.26 January 10, 2025

Respectfully, WSP USA Inc.

Justin W. Spengler Matthew C. Crews, PE

Consultant, Environmental Engineer Assistant Vice President, Environmental Engineer

JWS/MCC/as

Attachments: Figures

Attachment A DEP SAWP Review Email Attachment B Level of Effort and Cost Estimate Form Attachment C Subcontractor Bids

G:\Projects\DEP-Drycleaning\Projects\Jax\Handi Craft Cleaners\DC042B - Site Assessment\Proposal\DC042B - Handi Craft Cleaners Site Assessment Proposal (ERIC_4572).docx

From: Dalton, James B To: McGrane, Patrick Cc: Crews, Matt; Spengler, Justin Subject: Handi Craft Cleaners (ERIC_4572) - Site Assessment Work Plan - Review Date: Wednesday, December 27, 2023 3:09:12 PM Attachments: image001.jpg

All – I’ve reviewed the subject SAWP and have the following comments:

It appears that there may be some compliance issues (e.g. waste storage outside of secondary containment and floor sealant) in this active PCE drycleaning facility. We need to contact the DEP’s NE District and request a compliance inspection.

WSP might consider adding a vacuum monitoring point between MAG001 and MAG002.

I understand that WSP plans to complete all DPT work (including MW installation) during the initial mobilization. As discussed in our Teams meeting today, it appears that there are no DPT or MW locations directly in line with the estimated GW flow direction. I recommend completing a DPT GW profiling location and MW close to the building and directly downgradient from the DC machine location. WSP might consider whether installing “piezometers” on the first day of field work in an effort to establish GW flow direction would be beneficial in optimizing DPT and MW locations.

I suggest approving the SAWP and incorporating any changes into the proposal and implementation.

Thanks Breck

FL-DEP-LOGO James Breck Dalton, P.G.

Professional Geologist II Waste Site Cleanup Section Florida Department of Environmental Protection James.b.dalton@FloridaDEP.gov Office: 850-245-8892

REVISED DATE: 1/5/2024

ESTIMATE #: 823082-1

Outdoor Work

Indoor Work

ID QTY Unit Rate TOTAL

1 2 each 750.00$ 1,500.00$

2 7 night 300.00$ 2,100.00$

3 DPT Rig and Crew 8 day 1,750.00$ 14,000.00$

4 420 M Dolly Rig (Indoor Work) 1 each 450.00$ 450.00$

5 Core Drill and Generator 1 each 250.00$ 250.00$

6 Materials: Macrocore Sleeves 9 each 3.00$ 27.00$

7 Materials: Water Sampling Expendable Points 45 each 3.00$ 135.00$

8 Materials: HDPE Poly Tubing (500' roll) 4 each 120.00$ 480.00$

9 Materials: Grout Borehole w/Concrete Cap 10 each 15.00$ 150.00$

10 Materials: 2" PVC Well Installation (MAGS) 10 each 75.00$ 750.00$

11 Materials: 1" Sch 40 PVC Well Installation (MW) 155 foot 4.00$ 620.00$

12 Materials: (2) 1" x 5' PVC .010 Prepack Screen, 3" Exp Point 7 each 170.00$ 1,190.00$

13 Materials: 1" x 5' PVC .010 Prepack Screen, 3" Exp Point 1 each 95.00$ 95.00$

14 Donut Concrete Pad w/8" BD Completion (Indoor) 10 each 150.00$ 1,500.00$

15 2' x 2' Concrete Pad w/8" BD Completion 8 each 150.00$ 1,200.00$

16 Well Development (Up to 1/2 hour with pump) 8 each 75.00$ 600.00$

17 New Drums (Soil) Estimated 4 each 95.00$ 380.00$

18 New Drums (Water) Estimated 5 each 95.00$ 475.00$

19 Permits (City of Jacksonville - MW's Only) 8 each 150.00$ 1,200.00$

Subtotal 27,102.00$

Todd Hodgson Todd Hodgson TOTAL 27,102.00$ Partner

Jacksonville, Florida 9428 Baymeadows Rd. Suite 400

PROJECT

Handi Craft Cleaners 9735 Old St. Augustine Road

CUSTOMER

Matt Crews, P.E.

WSP

Jacksonville, Florida 32256

"Actual quantities used and days onsite will be invoiced"

Completion: 7-8 Days Depending on Water Pumping Time/Indoor Work

Locations must be accessible with track mounted DPT Rig w/ 14.5' Height Clearance Inside

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 (Includes Shift Change)

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

Per Diem - 2 Man Crew Est. (Hotel Cost + $50/per man)

New Drums for All IDW

DPT Soil and GW Profiling w/ Well Installation

Client Responsible for any damage to Bathroom tile from Core Drilling

(8) Hand Auger Borings to 6' w/Client Soil Grabs, (8 will be converted to MAG Wells)

Project Description:

(1) DPT Lithology Soil Boring to 50' bls w/Continuous Macrocores to Depth, Grout Borehole/Concrete Patch.

(8) 2" x 5' PVC MAGS w/4' of .010 Slot Screen w/Donut Pad w/ 8" BD Completion (Indoors)

(2) 1" x 15' PVC MW w/10' of .010 Slot Prepack Screen w/Donut Pad w/ 8" BD Completion. No Sampling (Indoors- 420 M Dolly Rig)

(3) Hand Auger Borings to 6' w/Client Soil Grabs. (2 will be converted to MAG Wells)

(2) 2" x 5' PVC MAGS w/4' of .010 Screen, 2' x 2' Concrete Pad w/8" BD Completion, No Sampling

(904) 363-3430

(9) DPT GW Profiling to 50' BLS at 5 Intervals (6-10', 16-20', 26-30', 36-40' and 46-50'), HDPE Tubing to be used.

Grout Borehole/Concrete Patch

(5) 1" x 15' PVC MW w/10' of .010 Prepack Screen, 2' x 2' Concrete Pad w/8" BD Completion, No Sampling

(1) 1" x 50' PVC MW w/5' of .010 Prepack Screen, 2' x 2' Concrete Pad w/8" BD Completion, No Sampling

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

EARTH TECH DRILLING

2703 NW 19TH STREET, POMPANO BEACH, FL 33069

954.974.2424 FAX:954.974.2423

Date: 1/4/2024

FAC ID#:

PROPOSED SCOPE OF WORK:

(10) Hand Auger Borings inside Bldg. to ~6' - Install MAG Wells in 10 borings

(10) MAG 2" x 5' w/ 4' .010" Screen & 8" BD Completion - Inside Bldg. - Concrete Core - Installed by hand

(9) DPT GW Sample Borings to 50' - Samples collected every 10 feet for a total of 5 Samples per boring (45 Samples Total) - Grout Abandon

Drum Soil & Development water - 30 Minutes of Dev. Per well - Estimated at (11) Drums

Unit Unit Rate Number of Units

Extended Price

Equipment Type: DPT Track Rig whole day $1,650.00 9 $14,850.00 lump sum $600.00 1 $600.00 each $295.00 10 $2,950.00 each $0.00 each $100.00 15 $1,500.00 each $40.00 16 $640.00 per well $225.00 18 $4,050.00 daily roundtrip $1,750.00 1 $1,750.00 per crew / per night $475.00 9 $4,275.00 each $80.00 11 $880.00 each $150.00 8 $1,200.00 each $65.00 45 $2,925.00 each $75.00 12 $900.00

$0.00

TOTAL QUOTE PRICE $36,520.00

Notes:

Project No.: ___________________________

Date: 1/4/2024

Pre-Packed PVC Well Screen (includes all materials) 5' Length Pack OD ___1"____

Permits - Install Well

Water Sample

Signature and Title of Person Submitting Quote: Charles Bucher

Concrete Core

Days to Complete Scope of Work: 9 Days

Subcontract Company Name: EARTH TECH DRILLING. Inc.

Subcontract Mailing Address: 2703 NW 19th Street, Pompano Beach, FL 33069

ETD Policy: If pea gravel is encountered, borehole advancement is terminated. If client would like to continue borehole advancement, it is at the risk of the consultant, FDEP or property owner.

MISCELLANEOUS

Mobilization

Per Diem

DOT Approved 55-gal Drum

Well Riser (includes all materials) ID ___1"___ 5' Length

Well Completion (includes 30 Min Dev. 6"/8" B-D MH & locking well cap)

Contractor Name: WSP - Matt Crews - 904 363-3430

Site Name: Former Handi Craft Cleaners - 9735 Old St. Augustine Rd - Jacksonville, FL

(HAND CLEAR ALL LOCATIONS TO 5' or REFUSAL)

(1) DPT Soil Borings to 50' - Grout Abandon

(7) MW 1"x15' w/ 10' Pre-Pack Screen & 8" BD Completion - Installed Using DPT Rods (2 locations require 420M Dolly Rig)

(1) MW 1"x50' w/ 5' Pre-Pack Screen & 8" BD Completion - Installed Using DPT Rods

Direct Push Daily Rate 1 - on-site day

(420M Dolly Rig) - Upcharge

MAG Wells - 2" x ~5' w/ 4' .010" Screen

Auger Attachment, 4" Surface Casing

DIRECT PUSH TECHNOLOGY

Monitoring Wells Sparge Wells Horizontal and Vertical Extraction Wells Geotechnical Drilling Direct Push

Preferred Drilling Solutions, Inc.

8820 66th St. North, Pinellas Park, FL 33782

Ph: 727-561-7477 Fax: 727-561-9028 www.pdsflorida.com

DIRECT PUSH TECHNOLOGY QUOTE FORM

Date: 1/5/24 FAC ID#: ERIC_4572

Unit Unit Rate Number of Units

Extended Price whole day $2,275.00 9 20,475.00$ half day $1,775.00 -$ per foot $30.00 50 1,500.00$ each $125.00 15 1,875.00$ each $45.00 -$ each $30.00 17 510.00$ per well $150.00 18 2,700.00$ roundtrip $850.00 2 1,700.00$ per crew / per night $575.00 7 4,025.00$ each $110.00 -$ each $70.00 10 700.00$ per day $150.00 4 600.00$ each $165.00 8 1,320.00$ lump sum $350.00 1 350.00$ per day $75.00 9 675.00$ per day $100.00 9 900.00$

TOTAL QUOTE PRICE $37,330.00

Notes: 1. Includes expendables, tubing, points, liners, caps, plugs, saw cuts, development, standby time, steam cleaning decon, and grouting.

Project No.:

Subcontract Company Name: Preferred Drilling Solutions, Inc. (727) 561-7477

Subcontract Mailing Address: 8820 66th St, Pinellas Park, FL 33782

Signature and Title of Person Submitting Quote: ___________________________________Austin Bonacum, Estimator Date: 1/5/24

PDS to provide concrete core drill with 10" bit

9735 Old St. Augustine Rd, Jacksonville, Duval County, FL

Well Completion (includes MH w/ cover, concrete pad, and locking well cap)

Well Riser (includes all materials) ID 1" 5' Length

Slotted PVC Well Screen (includes all materials) 5' Length Pack OD 3.5"

Pre-Packed Well Screen (includes all materials) ID 1" 5' Length Pack OD 3.5"

2" Well Install (includes all materials)

Direct Push Half-Day Rate 1 - on-site half day

(10) Hand auger borings to the water table (estimated at 6'), convert borings to MAGS/VMPs, backfill and restore grade

(7) 1" x 15' MW's with 10' .010 prepacked screen, soil sampling as needed, drum cuttings, pad and 8" bolt-down manhole

Drum cuttings, development water, and decon fluids

Decon all down hole tooling with steam cleaner

(10) 2" x 5' MAGS/VMP wells with 4' .010 screen, soil sampling as needed, drum cuttings, pad and 8" bolt-down manhole

(1) 1" x 50' MW with 5' .010 prepacked screen, soil sampling as needed, drum cuttings, pad and 8" bolt-down manhole

Site Name and Location: Handi Craft Cleaners

Consultant Name: WSP

PROPOSED SCOPE OF WORK:

(1) DPT boring to 50' (or refusal), backfill and grout, restore grade

(9) DPT borings to 50', (5) grab groundwater samples per boring, backfill and grout, restore grade

Days to Complete Scope of Work: 9

Direct Push Daily Rate 1 - on-site day

Equipment Type: Geoprobe 8040DT, Geoprobe 3230DT

*Note: It is against PDS policy to drill in Pea Gravel. Borings in Pea Gravel will be terminated or can proceed solely at the risk of the consultant, DEP or Property Owner

Steam Cleaner

Decon Pad

Concrete Core Drill

Refurbished - DOT Approved 55-gal Drum

NEW - DOT Approved 55-gal Drum

Per Diem

Mobilization

DIRECT PUSH TECHNOLOGY

MISCELLANEOUS

Permits

Geoprobe Consumables (grout, tubing, disp. points, asphalt/concrete patch)

GeoTek Services, LLC

05 January 2024

To: Matt Crews Golder Associates USA, Inc.

9428 Baymeadows Road, Suite 400 Jacksonville, Florida 32256

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

RE: Utility Locating Services Handi Craft Cleaners, Jacksonville, Florida

Mr. Crews, GeoTek Services is pleased to respond to your request for Utility Locating services at Handi Craft Cleaners located in Jacksonville, Florida. We will scan a around the 28 proposed bore locations with the goal of locating underground utilities.

We can only scan the easily accessible open areas for utilities. Note that we cannot scan beneath fixed objects such as landscaping, fencing, buildings. We will scan as close as reasonably possible to fixed objects such as walls, landscaping, fences, etc.

Our deliverable will be marking paint and/or flags indicating the location of potential

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 fixed price quote for this effort 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

Spengler, Justin

From: Jonathan Fish <jonathan.fish@procheckinspections.net> Sent: Saturday, January 6, 2024 10:02 AM To: Spengler, Justin Subject: Re: Handi Craft Cleaners - Jacksonville, FL (FDEP Facility ID ERIC_4572) - Request for

Utility Location Quote

We'll keep the same price on this one as well. Thank you very much!

Best Regards, Jonathan H. Fish

(904) 710-7290 P.O. Box 125 Macclenny, FL 32063 www.ProCheck-Inspections.net

On Thu, Jan 4, 2024 at 1:50 PM Spengler, Justin <justin.spengler@wsp.com> wrote:

Good afternoon, Can you provide an updated quote for the work detailed below, with one additional MAG well shown on the attached Figure 6, and one additional DPT vertical groundwater profiling point and monitoring well, with the estimated location shown on the attached Figure 7?

Thanks, Justin

From: Crews, Matt <matt.crews@wsp.com> Sent: Wednesday, August 23, 2023 2:07 PM To: Spengler, Justin <justin.spengler@wsp.com> Subject: Handi Craft Cleaners - Jacksonville, FL (FDEP Facility ID ERIC_4572) - Request for Utility Location Quote

Good afternoon, The FDEP has tasked WSP with completing site assessment activities at the former Handi Craft Cleaners site, which is located at 9735 Old St. Augustine Road in Jacksonville, Florida. Can you please provide a quote for utility location services associated with the proposed locations:

1 lithology boring (LB-1) and 10 soil borings (SB001 through SB010) shown on the attached Figure 5.

8 DPT groundwater screening locations (DPT-1 through DPT-8) shown on the attached Figure 7.

6 shallow monitoring well (MW001S through MW006S) and 1 intermediate monitoring well (MW001I) shown on the attached Figure 7.

In addition, please mark the approximate locations (and direction of flow, if applicable) of any water, sewer, stormwater, and buried power lines associated with the investigation.

If you have any questions, please let me know.

Thanks, Matt

Matthew Crews, P.E.

Assistant Vice President, Environmental Engineer

T+ 1 904-363-3430

M+ 1 904-327-8420

WSP USA Inc.

9428 Baymeadows Road, Suite 400

Jacksonville, Florida, USA 32256 wsp.com

NOTICE: This communication and any attachments ("this message") may contain information which is privileged, confidential, proprietary or otherwise subject to restricted disclosure under applicable law. This message is for the sole use of the intended recipient(s). Any unauthorized use, disclosure, viewing, copying, alteration, dissemination or distribution of, or reliance on, this message is strictly prohibited. If you have received this message in error, or you are not an authorized or intended recipient, please notify the sender immediately by replying to this message, delete this message and all copies from your e-mail system and destroy any printed copies.

-LAEmHhHzdJzBlTWfa4Hgs7pbKl

Jonathan H. Fish | (904) 710-7290 Jonathan.Fish@ProCheckInspections.net • www.procheck-inspections.net

Headquarters: P.O. Box 125 Macclenny, FL. 32063 EIN #: 87-2187749

Date: 08/23/2023 To: WSP Attn: Mr. Matt Crews Project: Handy Craft Cleaners – FDEP Facility ID: Eric_4572

ProCheck Inspections appreciates the opportunity to provide this proposal. Feel free to contact me at any time if you have any questions, or if you need additional information.

SCOPE OF WORK

We understand the scope to be to search for underground utilities as identified by the customer on the provided attachment/site map that includes identifying the primary utilities only that are associated with the dry cleaner section of the facility. In addition, we will focus on 26 locations for borings and monitoring wells. We will attempt to trace any utilities for which there are structures visible from the work area, and mark said utilities with paint and flags where possible. The client will be responsible to provide drawings or notify ProCheck Inspections of any utilities known to be entering the work area for which there are no apparent surface features or structures that are visible from the work area. The areas should be laid out, marked, and cleared of obstructions prior to our arrival.

EQUIPMENT

350 MHz Hyperstacking GPR Antenna. The antenna is mounted in a stroller frame which rolls over the surface. The surface needs to be reasonably smooth and unobstructed in order to obtain readable scans. Obstructions such as curbs, landscaping, standing water, and vegetation will limit the feasibility of GPR. The data is displayed on a screen and marked in the field in real time. GPR works by sending pulses of energy into a material and recording the strength and the time required for the return of the reflected signal. Reflections are produced when the energy pulses enter a material with different electrical properties from the material it left. The strength of the reflection is determined by the contrast in signal speed between the two materials. The total depth achieved can be as much as 8’ or more with this antenna but can vary widely depending on the conductivity of the materials. The patented hyperstacking antenna can improve depth penetration and resolution when compared with a traditional GPR antenna.

Electromagnetic Pipe Locator. The EM locator can detect the electromagnetic fields from live power or radio frequency signals. It can also be used in conjunction with a transmitter to connect directly to accessible, metallic pipes, risers, or tracer wires. A current is sent through the pipe or tracer wire at a specific frequency and the resulting EM field can then be detected by the receiver. The receiver is moved over the surface without contacting the ground, so it is not affected by terrain.