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.

HW687

DC020B Completion September 30, 2023

This TA authorizes costs for site assessment. The total cost of this TA is $296,831.54 and this entire cost is fixed unit rate.

Dean Cox 850-245-8969 Contractor Contractor

Contractor Contractor

Contractor Contractor

Contractor

Terracon Consultants, Inc.

Terracon Consultants, Inc.

Donna Cline 813-321-0340

ERIC_4733

1920 Tampa East Boulevard, Tampa (Hillsborough County)

Miller Machinery & Supply Company

✔ $ 296,831.54

$ 296,831.54

Scope of Work

Teresa Booeshaghi

Teresa Booeshaghi Digitally signed by Teresa Booeshaghi Date: 2023.03.20 11:58:12 -04'00'

3/20/2023

N/A

Cline, Donna L Typewriter Donna Cline

Sr. Remediation Engineer

03/22/23

Task Assignment Notification/Change Order Deliverables and Invoice Schedule Attachment

WCP TAFORM 04-2017

Contract Number:

Task Assignment #:

Deliverables:

Deliverable Deliverable Due Date

Invoice Schedule:

Requirements for Invoice Submittal Amount to be Invoiced

TOTAL COST

Soil and groundwater sampling results summary tables & figures, lab reports, MAGS Test results & calculations and summary tables, field notes (Subtask 2: Soil Sampling, Well Eval & Sampling, MAGS Install/Test).

06/30/2023

MiHPT results/documentation with summary tables & figures, groundwater screen and soil sampling results summary tables & figures, lab reports (Subtask 3: MiHPT, Soil Sampling, GW Screen Sampling).

07/30/2023

Site Assessment Report (Subtask 6: Site Assessment Report).

07/30/2023

Site Survey (Subtask 4: Survey).

08/31/2023

Investigation Derived Waste (IDW) manifests (Subtask 1: Project Management and Subtask 5: IDW). 08/31/2023

DEP approval of soil and groundwater sampling results summary tables & figures, lab reports, MAGS Test results & calculations and summary tables, field notes (Subtask 2: Soil Sampling, Well Eval & Sampling, MAGS Install/Test).

$ 71,702.38

DEP approval of MiHPT results/documentation with summary tables & figures, groundwater screen and soil sampling results summary tables & figures, lab reports, field notes (Subtask 3: MiHPT, Soil Sampling, GW Screen Sampling).

$ 175,773.74

Site Assessment Report (Subtask 6 Site Assessment Report).

$ 21,451.91

Site Survey (Subtask 4).

$ 15,071.76

Investigation Derived Waste (IDW) manifests (Subtask 1 Project Management and Subtask 5 IDW). $ 12,831.75

$ 296,831.54

HW687

DC020B

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 Interim Secretary

Memorandum

TO: HW687 Contract File FROM: Dean Cox, Contract Manager SUBJECT: HW687 DC020B Miller Machinery & Supply Company (ERIC_4733) Site Assessment

DATE: 3/17/23

This TA authorizes Terracon’s costs for site assessment. The total cost of this TA is $296,831.54 and this entire cost is fixed unit rate. This TA was negotiated - the total cost is $71,051.89 or 19% less than originally proposed.

This site assessment TA includes the use of MiHPT to map a large PCE plume containing high concentrations and potential DNAPL. This technology is relatively expensive but it being authorized for this TA to evaluate Terracon’s assertion that it is more effective and cost efficient overall, with fewer site mobilizations to get the required data. Three bids were requested for each subcontracted task element except surveying. Site access was confirmed current.

Information on the contents of this TA package follows.

• Terracon provided Competitive Bid Worksheets (CBWs) for each subcontracted task element. The CBWs are located immediately following Terracon’s proposal letter.

• Subcontractor bid documentation follows the CBWs. This documentation appears in the order the subcontractors participate in site assessment, starting with LOE2 and progressing through LOE5. And this documentation is discussed in that order below.

o The third utility location bidder, GPRS, was non-responsive to Terracon’s request for bid. The SurvTech surveying bid included utility location, so they serve as a third utility location bidder. The cost of the utility portion of ServTech’s bid is removed to arrive at their surveying cost.

o The third coring bidder, Florida State Concrete Coring, was non-responsive as documented via the email record.

o The third drilling bidder, Drill Pro, was non-responsive as documented via the email to Todd Hodgson. Drilling bids are provided via the Terracon Drilling Spec Sheet – Terracon completes the job specs and the bidder makes the associated cost entries and returns the sheet as their bid. The low-bid/chosen drilling subcontractor’s costs are split between ST2 and ST3 according to which drilling task elements apply to each subtask.

o The third MiHPT bidder, Dakota, was nonresponsive as documented via the email record. The Cascade MiHPT bid includes drilling. Both bidders included drilling in their initial bid request. Terracon was directed by the WSCS PM to sub the drilling because their handling cost was less than the driller’s premiums for subcontracting. Columbia resubmitted a bid without drilling but Cascade did not, so Terracon subtracted the amount Cascade charged for drilling to arrive at their MiPHT bid. MiPHT costs are summarized in the Competitive Bid Worksheet. (Cascade’s bid also includes mobilization to the wrong destination which may have increased the mob costs they quoted, but a reduction [or elimination] of this cost would not bring their total below that of Columbia’s.)

Note - the Soil Investigation section of Terracon proposal letter should refer to 6 soil boring locations (rather than 3) in addition to soil samples to be collected from 18 MAGS locations. The CEF-LOE correctly accounts for 6 additional soil boring locations.

FDEP COST ESTIMATE

Contractor: Terracon

Date: 3/17/2023 Task #: SubTask 1 Project Management SubTask 6 Site Assessment Report

Site: Miller Machinery and Supply Co #2 (ERIC_4733) SubTask 2 Soil Sampling, Well Eval & Sampling, MAGS Install/Test SubTask 7 Activity/Phase: Site Assessment & Workplan SubTask 3 MiHPT, Soil Sampling, GW Screen Sampling SubTask 8

Project Manager: Dean Cox SubTask 4 Survey SubTask 9 SubTask 5 IDW Soil & GW Management SubTask 10

Totals 1 2 3 4 5 6 7 8 9 10 Labor Rate Category

$64.50 Project Manager Donna Cline 60.25 60.25 $0.00 Administrative 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 Brownfield Consultant 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

$31.25 CADD Specialist Chelsea Fugate 55.00 5.00 20.00 0.00 0.00 30.00 0.00 0.00 0.00 0.00 $0.00 Data Analyst & Visualization Specialist 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

$17.50 Environmental Technician Corey Olson 77.50 75.50 0.00 0.00 2.00 0.00 0.00 0.00 0.00 0.00 $21.73 Field Geologist Jared Duncan 132.00 63.50 68.50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $29.28 Staff Engineer Eddy Leon 370.50 79.00 169.50 4.00 1.00 117.00 0.00 0.00 0.00 0.00 $48.08 Senior Geologist Shawn Ouellette 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 Principal Consultant 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 Staff Engineer 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 Project Industrial Hygienist 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

$42.07 Project Scientist Brennan Taylor 42.50 0.00 22.50 0.00 0.00 20.00 0.00 0.00 0.00 0.00 $64.50 Senior Engineer Donna Cline 8.00 0.00 0.00 0.00 0.00 8.00 0.00 0.00 0.00 0.00 $57.69 Senior Geologist Dan Nedvidek 142.75 3.50 114.25 0.00 0.00 25.00 0.00 0.00 0.00 0.00 $0.00 Senior GIS Analyst 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 Senior Industrial Hygienist 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

$40.87 Senior Scientist/Engineer Michael Mui 62.75 62.75 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 Senior Scientist 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 Staff Scientist 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 $0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

Total Hours 951.25 60.25 289.25 394.75 4.00 3.00 200.00 0.00 0.00 0.00 0.00

Direct Labor $33,781.84 $3,886.41 $7,936.99 $14,614.13 $117.12 $64.28 $7,162.91 $0.00 $0.00 $0.00 $0.00

Overhead 116.00% $39,186.94 $4,508.24 $9,206.91 $16,952.39 $135.86 $74.56 $8,308.98 $0.00 $0.00 $0.00 $0.00 Gen & Admin 0.00% $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Fringe 56.26% $19,005.65 $2,186.49 $4,465.35 $8,221.91 $65.89 $36.16 $4,029.85 $0.00 $0.00 $0.00 $0.00 Total Labor $91,974.43 $10,581.14 $21,609.25 $39,788.43 $318.87 $175.00 $19,501.74 $0.00 $0.00 $0.00 $0.00

REV: 02/03 CEF TERRACON Page 1

FDEP COST ESTIMATEContractor: Terracon Date: 3/17/2023

Task #: SubTask 1 Project Management SubTask 6 Site Assessment Report Site: Miller Machinery and Supply Co #2 (ERIC_4733) SubTask 2 Soil Sampling, Well Eval & Sampling, MAGS Install/Test SubTask 7

Activity/Phase: Site Assessment & Workplan SubTask 3 MiHPT, Soil Sampling, GW Screen Sampling SubTask 8 Project Manager: Dean Cox SubTask 4 Survey SubTask 9

SubTask 5 IDW Soil & GW Management SubTask 10

Totals 1 2 3 4 5 6 7 8 9 10 Travel

Vehicle charge $3,680.00 1,560.00$ 1,920.00$ 80.00$ 120.00$ $0.00 $0.00 $0.00 $0.00 $0.00 Mileage Costs $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Air Fare $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Per diem + Hotel $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Travel $3,680.00 $1,560.00 $1,920.00 $80.00 $120.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subcontractor (Equipment Procurement) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subcontractor Subtotal $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Procurement Fee $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Subcontractor Cost $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subcontractor (Services Procurement) Drilling ( DPT) -Action Environmental $70,837.86 17,372.00$ 53,465.86$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 MiHPT - Columbia $59,900.00 $0.00 59,900.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Mobile Laboratory $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Surveying - SurvTech Solutions, Inc. $13,310.00 $0.00 $0.00 13,310.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 IDW - Erwin Remediation $800.00 $0.00 $0.00 $0.00 800.00$ $0.00 $0.00 $0.00 $0.00 $0.00 True Line Coring and Cutting $6,150.00 6,150.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 GeoTek $2,950.00 2,950.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

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

Subcontractor Subtotal $153,947.86 $26,472.00 $113,365.86 $13,310.00 $800.00 $0.00 $0.00 $0.00 $0.00 $0.00 Handling Fee $14,993.81 $2,647.20 $10,935.61 $1,331.00 $80.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Subcontractor Cost $168,941.67 $29,119.20 $124,301.47 $14,641.00 $880.00 $0.00 $0.00 $0.00 $0.00 $0.00

Laboratory Analytical Costs $15,279.00 11,694.00$ 3,585.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Fast Turnaround Charges $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Sample Shipping $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Laboratory $15,279.00 $11,694.00 $3,585.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Field Expenses Personal Protection $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Expendables $1,225.00 345.00$ 880.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (Drilling related) $870.00 $0.00 870.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (Analytical related) $4,466.00 4,466.00$ -$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (IDW related) $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Equipment (Other) $1,198.00 748.00$ 450.00$ $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 Total Field Expenses $7,759.00 $5,559.00 $2,200.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00 $0.00

Subtotal $287,634.10 $10,581.14 $69,541.45 $171,794.90 $15,039.87 $1,175.00 $19,501.74 $0.00 $0.00 $0.00 $0.00 Completion Fee $9,197.44 $1,058.11 $2,160.93 $3,978.84 $31.89 $17.50 $1,950.17 $0.00 $0.00 $0.00 $0.00

Total Estimated Cost $296,831.54 $11,639.25 $71,702.38 $175,773.74 $15,071.76 $1,192.50 $21,451.91 $0.00 $0.00 $0.00 $0.00

REV: 02/03 CEF TERRACON Page 2

LEVEL OF EFFORT/EXPENSE WORKSHEET

SITE : Miller Machinery and Supply Co #2 (ERIC_4733) SUBTASK 2: Soil Sampling, Well Eval & Sampling, MAGS Install/Test

PROPOSAL NO. PH4227493

DATE: 3/17/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning Staff Engineer EL 3.00 Staff Engineer EL 1.00 Senior Geologist DN 2.00 Staff Engineer EL 4.00

Environmental Tech CO 8.00 Field Geologist JD 28.00

Staff Engineer EL 6.00 Staff Engineer EL 3.00 Soil Sampling / Oversee MAGS Well Installation /Existing well evaluation and Groundwater Sampling

Time Duration: 2.5 days Technician CO Load/unload equipment (1 hour/day) 2.50 Staff Engineer EL Direct work, daily safety debrief, record lithological descriptions, OVA screening, oversee MAGS 22.00 wells installations Technician CO Collect one sample at 0.5, 2, 4 and 6 ft bgs for laboratory analysis (VOCs) at each of 24 locations 22.00 Technician CO Containerize IDW (0.5 hours/day) 1.50 Staff Engineer EL Finalize field notes at end of day for PM evaluation (1 hour/day) 2.50 Cadd Specialist CF Download soil boring and MAGS well locations and soil analytical results to Compass (2 hrs) 2.00 Field Geologist JD 10.00

Technician JD 18.00

MAGS Test Time Duration: 3.5 Days Senior Scientist/Engineer MM Attend Pre Task Planning meeting and review technical approach to MAGS 2.00 Environmental Tech CO Deliver and set up MAGS System 5.00 Senior Scientist/Engineer MM 35.00

Staff Engineer EL Collect vacuum/pressure and OVA screening measurements, collect samples for lab analysis 27.00 Environmental Tech CO Maintain system operation of the MAGS system, reduce vacuum / flows as directed by Engineer / 29.00

Maintain hoses / decon as appropriate between MAGS wells Senior Scientist/Engineer MM Finalize field notes at end of day (1 hour/day) 2.50 Senior Scientist/Engineer MM Interpret field data, perform calculations, and provide update to FDEP 18.00 Cadd Specialist CF Download MAGS summary data (vacuum and flow measurement) and soil vapor analytical 3.00 results to Compass (Terracon's software for FDEP access) Mobilization / Demobilizations Senior Geologist DN 1.50 Senior Scientist/Engineer MM 3.5 Days, MAGS Test (1.5 hour/day) 5.25 Staff Engineer EL 10.50 Technician CO 5 Days, including Initial site visit (1.5 hours/day) CF 7.50 Field Geologist JD 5 Days, soil investigation (1.5 hour/day) 5.00 7.50

Personnel: EL MM JD CO DN Hours: 79.00 62.75 63.50 75.50 3.50 TOTAL LABOR 289.25

VEHICLE TYPE RATE UNIT USEAGE

Truck (Staff Engineer) 480.00$ week 1 480.00$ Truck (Field Technician/Field Geologi 480.00$ week 1 480.00$ Truck (Senior Scientist/Engineer) 120.00$ days 4 480.00$ Truck (Senior Geologist) 120.00$ day 1 120.00$

TOTAL VEHICLE 1,560.00$

SUBCONTRACTOR COSTS

NAME UNIT USEAGE

GeoTek Fixed Price 1 2,950.00$ Action Env each 1 17,372.00$ True Line Coring and Cutting

PURPOSE COST

Borehole utility clearance $ 2,950.00 Soil borings and MAGS well installatio $ 17,372.00 Concrete Coring $ 6,150.00 each 1 6,150.00$

TOTAL SUBCONTRACTOR 26,472.00$

LABORATORY COSTS

PARAMETER RATE # SAMPLES

Halocarbons EPA 8260 (soil) 73.00$ 90 6,570.00$ Aromatics EPA 8260 (soil) 60.00$ 5 300.00$ VOCs (soil-prep) 5035 prep 7.00$ 90 630.00$ SPLP Bottle Extraction Method 1312 -$ 0 VOCs Soil Vapor- Full Scan TO-15 200.00$ 18 3,600.00$

Summa Canister 33.00$ 18 594.00$

TOTAL LAB 11,694.00$

7 Days, including Initial site visit (1.5 hours/day)

1 Day, PreTask initial site visit (1.5 hours/day)

Attend initial site visit to meet with owner, review technical approach to soil / MAGS Investigation Contact owner and conduct pre-drilling site walk with property owner, current tenants, drilling contractor, and FDEP. Designate IDW staging areas, decon pad location, and truck staging areas.

Assess up to 12 existing monitoring wells (depth to water, total depth, purge and develop. (1 hour per well) Sample up to 12 existing monitoring wells 24 hours after eval/development (1.5 hours per well).

Perform and direct MAGS sampling test (18 points x 1.5 hr/point =27 , oversee set up / calibration, access difficult areas)

Scope: 18 MAGS wells to a max depth of 10 ft bgs with soil investigation, 6 additional soil borings to water, one shallow MW (interior).

Pre Task Planning, develop soil installation SOW, develop subcontractor scopes of work Prepare Health and Safety Plan

Attend initial site visit, layout boring locations (1 day).

Prepare soil logging materials and order soil and GW sampling kits and MAGS materials Request laboratory sample kit (soil sampling, MAGS, groundwater screening, and sampling)

Attend initial site visit, layout boring locations (1 day). Oversee geophysical survey for boring, groundwater screening locations (2.5 days)

SUBTASK 2: Soil Sampling, Well Eval & Sampling, MAGS Install/Test

PROPOSAL NO. PH4227493

DATE: 3/17/2023

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 7 280.00$ Ice (Sample Preservation) 6.50$ each 10 65.00$

Analytical related Terra Core Sampler 11.00$ each 90 (VOH samples) 990.00$ Encore Sampler (SPLP) 16.00$ each 90 1,440.00$ Hand Auger 12.00$ day 3 36.00$ MAGS Investigation Kit 500.00$ day 4 2,000.00$

IDW related (Drums provided by Diller) Other Global Positioning System 175.00$ day 2 350.00$

Shallow Groundwater Sampling Kit 290.00$ day 1 290.00$ Tubing, HDPE 0.30$ ft 300 90.00$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 6 18.00$

TOTAL EQUIPMENT 5,559.00$

SUBTASK 3: MiHPT, Soil Sampling, GW Screen Sampling

PROPOSAL NO. PH4227493

DATE: 3/17/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Field Task Planning and Pre-Drilling Tasks (Primarily included in LOE 2) Senior Geologist DN 2.00 Staff Engineer EL 6.00 MiHPT Investigation Scope: Conduct approximately 70 MiHPT borings to 30 feet Time Duration: 15 days Field Geologist JD Load/unload equipment (0.5 hour/day) 7.50 Staff Engineer EL Direct work, daily safety debrief 7.50 Senior Geologist DN Oversee MiHPT, 5 days on site (10 hours/day), 10 days remote data processing (4 hours/day) 90.00 Staff Engineer EL 100.00 Project Scientist BT 22.50 Staff Engineer EL Prepare draft well and boring logs and field notes for PM evaluation (0.5 hr/day) 7.50 CADD Specialist CF Download lithology, field notes, gw flow direction to Compass (1 hrs/day) 15.00

(Terracon's software for FDEP access) Direct Push Boring with Screen Point Sampling and soil sampling

Time Duration: 5 days Field Geologist JD Load/unload equipment (0.5 hour/day) 2.50 Staff Engineer EL Direct work, daily safety debrief, record lithology, assist with sample collection, coordinate lab pickup of 24.00 groundwater samples Field Geologist JD Collect field screened samples, record notes/observations in field book, oversee pressure grouting of 50.00 borehole, complete chain of custody Senior Geologist DN 8.00 Field Geologist JD Containerize IDW (05. hour/day) 2.50 Staff Engineer EL Prepare draft well and boring logs and field notes for PM evaluation (1 hr/day) 5.00 Senior Geologist DN Review gw screening data, communicate with FDEP (0.75 hr/day) 3.75 CADD Specialist CF Download groundwater screening location and groundwater results to Compass (1 hrs/day) 5.00

(Terracon's software for FDEP access) Mobilization / Demobilizations Senior Geologist DN 10.50 Staff Engineer EL 19.50 Field Geologist JD 6.00

Personnel: EL JD DN CF BT Hours: 169.50 68.50 114.25 20.00 22.50 TOTAL LABOR 394.75

VEHICLE TYPE RATE UNIT USEAGE

Truck (Staff Engineer) 480 Week 2 960.00$ Truck (Field Geologist) 480 Week 1 480.00$ Truck (Senior Geologist) 480 Week 1 480.00$

TOTAL VEHICLE 1,920.00$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

Action Environmental DPT 53,465.86$ each 1 53,465.86$ Costs for mobe/demobe, per diem, permitting, decon and restoration are $12,700. This amount was split between LOE2 and LOE3 ($6350 applied to each) Columbia Technologies MiHPT 59,900.00$ each 1 59,900.00$

TOTAL SUBCONTRACTOR 113,365.86$

LABORATORY COSTS

PARAMETER RATE # SAMPLES

Halocarbons EPA 8260 73.00$ 45 3,285.00$ Aromatics EPA 8260 60.00$ 5 300.00$

TOTAL LAB 3,585.00$

EQUIPMENT ITEM RATE COSTING UNIT USEAGE TOTALS

Expendables Expendables 40.00$ day 18 720.00$

Ice (Sample Preservation) 6.50$ each 8 52.00$ Tubing, HDPE 0.30$ ft 300 90.00$ Tubing, silicon (3/16 x 3/8) 3.00$ ft 6 18.00$

Drilling related Shallow Groundwater Sampling Kit 290.00$ day 3 870.00$ Analytical related IDW related (Drums provided by Driller) Other Total Survey Station 50.00$ day 2 100.00$

Global Positioning System 175.00$ day 2 350.00$

TOTAL EQUIPMENT 2,200.00$

Attend initial site visit to meet with owner, review technical approach to groundwater Investigation Prepare MiHPT work plan and data management sheets

MiHPT data quality review ( 1.5 hours/day for 15 days) Oversee MiHPT (10 days)

Senior geologist oversight / technical QA/QC of operations

7 Days (1.5 hours/day) 13 Days (1.5 hours/day) 4 Days (1.5 hours/day)

Scope: 10 Locations to a Depth of 30 feet, collect GW screen point samples and soil samples. Estimate 3 per location.

Final locations to be based on MIP results

SUBTASK 5: Survey

PROPOSAL NO. PH4227493

DATE: 3/17/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Coordinate IDW T&D Staff Engineer EL 4.00

TOTAL LABOR 4.00

VEHICLE TYPE RATE UNIT USEAGE

Auto 80 day 1 80.00$

TOTAL VEHICLE 80.00$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

SurvTech Solutions Inc 13,310.00$ each 1 13,310.00$

TOTAL SUBCONTRACTOR 13,310.00$

Oversight and access assistance.

FDEP boundary survey

SUBTASK 5: IDW Soil & GW Management

PROPOSAL NO. PH4227493

DATE: 3/17/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Coordinate IDW T&D Staff Engineer EL 1.00 Environmental Technician CO 2.00

TOTAL LABOR 3.00

VEHICLE TYPE RATE UNIT USEAGE

Truck (IDW management) 120 day 1 120.00$

TOTAL VEHICLE 120.00$

SUBCONTRACTOR COSTS

NAME PURPOSE COST UNIT USEAGE

Erwin Remediation 100.00$ each 8 800.00$

TOTAL SUBCONTRACTOR 800.00$

IDW Disposal (soil / groundwater excluding haz mat)

Coordinate IDW T&D: Mobilize to site, meet transporter to sign manifests Prepare waste characterization/Generator Profile (potential for hazardous waste)

SUBTASK 6: Site Assessment Report

PROPOSAL NO. PH4227493

DATE: 3/17/2023

LABOR CATEGORY *PROVIDE TIME REQUIRED FOR EACH PERSON

STAFF-TITLE WORK DESCRIPTION HOURS

Report Deliverable Staff Engineer EL Prepare report tables and draft maps 15.00 Staff Engineer EL 32.00 Staff Engineer DN QA/QC field and laboratory data 10.00 Staff Engineer EL 70.00

Senior Geologist DN Water Quality Parameters Summary Evaluation 3.00 Senior Geologist DN Groundwater Analytical Results Summary Evaluation 8.00 Senior Geologist DN Conclusions/Recommendations 4.00 Project Scientist BT Create 3D model and deliverables 20.00 CADD Specialist CF Prepare base figures and Exhibits (site setting, potable wells, groundwater flow, cross sections, 30.00 and concentrations maps) Senior Engineer DC APR final report DC 8.00

8.00 Personnel: EL JD DN CF BT

Hours: 117.00 0.00 25.00 30.00 20.00 TOTAL LABOR 200.00

Prepare GINT boring logs (41 borings @1.5 hours per boring), well construction diagrams, lithological descriptions, and cross sections (5 hour per cross section)

Prepare draft report introduction, site history, recent activities summary, and discussion of results

5463 West Waters Avenue Tampa, FL 33684

P (813) 221-0050 F (813) 221-0051

Terracon.com

March 9, 2023

Florida Department of Environmental Protection Waste Cleanup Program Waste Management Division 2600 Blair Stone Road Tallahassee, Florida 32399-2400

Attn: Mr. Dean Cox, Environmental Consultant E: Dean.Cox@FloridaDep.gov W: 850-245-8969 M: 727-686-6502

Re: Proposal for Site Assessment Work Plan Implementation Miller Machinery & Supply Company #2 1920 Tampa East Blvd Tampa, Hillsborough County, Florida

ERIC_4733

Task Assignment HW687 DC020B Terracon Project No. H4227287

Dear Mr. Cox:

Terracon Consultants, Inc. (Terracon) appreciates the opportunity to submit this proposal to the Florida Department of Environmental Program (FDEP) Waste Cleanup Program (WCP) to implement the FDEP approved Site Assessment Workplan (SAWP), Revision 1.0, dated October 4, 2022, for Miller Machinery & Supply Company #2 (ERIC_4733) located at 1921 Tampa East Blvd, Tampa, Hillsborough County, Florida. The objective of this site assessment is to assess for the horizontal and vertical extent of on-site and off-site chlorinated solvent contamination.

Subtask 1. Project Management Subtask 2. Soil Sampling, Modified Active Gas Survey (MAGS), and assessment/sampling of existing monitoring wells Subtask 3. Membrane Interface Probe Assessment, Confirmatory Soil and Groundwater Sampling Subtask 4. PLS Property Survey Subtask 5. IDW Subtask 6. Preparation of Site Assessment Report

Scope of Services

Submit Site Assessment Report of on-site activities within 30 business days following receipt of laboratory results.

Schedule

Compensation See attached CEF for details.

mailto:Dean.Cox@FloridaDep.gov mailto:Dean.Cox@FloridaDep.gov

Proposal for Site Assessment Workplan Implementation Miller Machinery & Supply Company #2, ERIC_4733 ■ Tampa, FL March 9, 2023 ■ Terracon Proposal No. 4227492

SCOPE OF SERVICES

Subtask 1 – Project Management

Dan Nedvidek, P.G. will serve as the project manager for this site. Donna Cline, P.E., will serve as the Authorized Project Reviewer.

Subtask 2 - Soil Sampling, Interior Well Installation, Modified Active Gas Sampling (MAGS), and Assessment/Sampling of Existing Monitoring Wells

Terracon will prepare health and safety plan. Pre-Task Planning will also be performed to prepare for field investigations.

Utility Locate Prior to conducting the any subsurface activities, Terracon will subcontract GeoTek to provide a subsurface geophysical survey to identify potential subsurface utilities or obstructions. A 10-foot by 10-foot box will be white lined around each boring location with utilities marked within that boundary, to allow for alternative location in case of hand auger obstruction. This scope of work is estimated to take two (2) full days to complete.

Due to the presence of reinforced concrete across much of the project site, Terracon will subcontract concrete coring services for the MAGS well installation to True Line Coring and Cutting. It is anticipated that this scope of work will take two days to complete. Concrete coring will happen concurrently with interior and on-site utility clearance of boring locations to minimize mobilization charges to FDEP.

Soil Investigation Terracon will collect soil samples via hand-auger and DPT from 3 proposed soil boring locations (only) and from the 18 proposed MAGS locations as described in SAWP (Terracon 2022). Terracon will collect soil samples from 0.5, 2, 4, 6, 8 and 10 feet (ft) below ground surface (BGS), or to the top of the water table, via hand auger and/or from the DPT soil samples at each soil boring location.

Terracon has contracted with Action Environmental to perform the soil boring and MAGS well installation. One shallow well will be installed in the interior of the facility near the suspected source zone. Terracon personnel will field screen the soils with an OVA-PID, document the lithology observed at each of these soil boring locations, and will record the Global Positioning System (GPS) coordinates of completed borings. Based on the number of proposed boring locations and depth intervals, Terracon will collect up to 138 soil samples for laboratory analysis of Volatile Organic Halocarbons (VOH) and five samples for Volatile Organic Aromatics (VOA) via EPA Method 8260. The approximate sampling locations, depth intervals, matrices, analytes and laboratory methods, rationale, and screening criteria are summarized in the SAWP (Terracon, 2022). The soil borings will be tremie- grouted with neat cement / bentonite mixture. MAGS sampling points will be constructed of 2” PVC and screened per FDEP requirements, and as detailed in the SAWP. Surface finishes will consist of a flush-mounted PVC cleanout ports with screw-type lids.

Modified Active Gas Survey (MAGS) The MAGS test will be performed over a period of 3.5 days. One air sample will be collected via Summa cannister at each MAGS location and analyzed for TO-15.

Assessment/Sampling of Existing Monitoring Wells Terracon will assess and sample (if possible) up to 12 existing on-site and off-site monitoring wells to determine if additional wells will be required at a later date. Each assessment will consist of a visual inspection of the well structure, collection of total depth and depth to water measurements, and 30 minutes of well development. Following the development task, Terracon will wait no less than 24 hours

March 9, 2023 ■ Terracon Proposal No. 4227492 before returning to the site to collect groundwater samples from wells deemed viable. Samples will be analyzed for VOH/VOA via EPA Method 8260.

Subtask 3 – Membrane Interface Probe (MiHPT) Assessment, Confirmatory Soil and Groundwater Sampling

MiHPT Assessment MiHPT assessment data will be collected from ground surface to 30 feet BGS at approximately 70 on-site and off-site locations. Terrracon has selected Columbia Technologies/Action Environmental to collect MiHPT data and provide DPT services. Terracon personnel will remain on-site for the duration of the MiHPT data collection to provide real time interpretation of the data to ensure efficient data collection decisions are made. Data will be reviewed in real time and a summary posted to the Client Portal the following morning. A senior geologist will remotely review the data and verify that quality control metrics are within range for all data. Three-dimensional modeling will be updated throughout the project ensure the conceptual site model reflects current site conditions. In addition to VOC data, the MiHPT also provides hydraulic profiling information that can be used to roughly correlate probe pressures to changes in lithology. This scope of work is estimated to take approximately 15 days to complete.

DPT Groundwater Profile Assessment and Soil Sampling Groundwater profiling and soil sampling will be conducted at approximately 10 MiHPT locations to confirm the presence of VOCs and correlate hydraulic profiling data to observed lithology. Terracon anticipates collecting three samples from each location. Generally, samples are taken from areas of high, medium, and low MIP response to better define model boundaries. Samples will be analyzed for VOH/VOA via EPA Method 8260. Additional details are summarized in the SAWP (Terracon, 2022).

Subtask 4 –Boundary and Property Survey

Terracon will subcontract PLS services from SurvTech for site boundaries, structures, wells, soil borings, groundwater profiling locations, and MiHPT borings located on-site and offsite.

Subtask 5 –Investigation Derived Waste

Decontamination activities will take place at a designated staging and laydown area. The soil and water IDW will be containerized in 55-gallon drums and staged on-Site at a designated location. It is estimated that 8 drums of IDW will be generated in Subtasks 2 and 3 and the transportation and disposal costs for the drums are included under Subtask 5.

Terracon has selected Erwin Remediation, Inc. (Erwin) for IDW transportation and disposal. Terracon will provide oversight of the IDW pickup, and sign waste manifests as an agent of FDEP.

Subtask 6 –Site Assessment Report

Terracon will prepare a Site Assessment Report that will detail and summarize the groundwater sampling activities, field observations, and results of soil and groundwater analysis and will include data tables and exhibits of groundwater flow and soil and groundwater concentrations. Conclusions and recommendations will include a summary of results and recommendations for future sampling or remedial activities. Recommendations regarding the number and location of additional monitoring wells

March 9, 2023 ■ Terracon Proposal No. 4227492 will be discussed in this report as necessary. Installation of additional monitoring wells will be covered under a separate Task Assignment.

SCHEDULE

It is estimated that the field activities outlined in this proposal will be completed over an approximately 30-day period. Terracon will strive to conduct activities concurrently when personnel scheduling and safety allow. Daily updates of activities will be uploaded within 24 hours of completion on the Compass website to allow for FDEP review of site data. Terracon anticipates the deliverable of site assessment activities within 30 business days of receipt of analytical results.

CLOSING REMARKS

Terracon services will be conducted in accordance with the terms and conditions contained within DEP Waste Cleanup Program (WCP) Contract No. HW687, executed January 5, 2022. It is understood that a Task Assignment will be issued to us to authorize us to perform this work.

We appreciate the opportunity to provide this proposal and look forward to working with you on this project. If you should have any questions or comments regarding this proposal, please contact either of the undersigned at (813)321-0050.

Sincerely, Terracon Consultants, Inc.

Dan Nedvidek, P.G. Donna Cline, P.E.

Environmental Department Manager Senior Remediation Engineer

Attachments: Cost Spreadsheet Level of Effort

FDEP Waste Cleanup Program

COMPETITIVE BID WORKSHEET

Project Name/Address: Miller Machinery & Supply Co #2 ERIC_4733 Date: 3/9/2023

Detailed description of goods or services required (including total quantity, size, delivery requirements, and all other specifications):

Vendor Name: Description Price Quantity GPRS Price Quantity GeoView Price Quantity GeoTek Services Contact Name: Chris Taylor Bud Connor Contact Number: 813-494-1664 321-473-7498

Written Quote (yes/no): No Yes Telephone Quote (yes/no): Yes No

Utility clearance scanning, marking, map 1 1 3,600.00$ 2,950.00$ 1 2,950.00$

Service/Good Cost: 3,600.00$ 2,950.00$ Taxes (7.5%):

Shipping:

Handling/Drop Fees:

TOTAL COST: -$ 3,600.00$ 2,950.00$

VENDOR SELECTED: GeoTek Services Basis of Selection: Lowest bid

Not Responsive

Scan and mark utilities within a 10'x10' box around 70 proposed boring locations.

FDEP Waste Cleanup Program

COMPETITIVE BID WORKSHEET

Project Name/Address: Miller Machinery & Supply Co #2 ERIC_4733 Date: 3/9/2023

Detailed description of goods or services required (including total quantity, size, delivery requirements, and all other specifications):

Vendor Name: Description Price Quantity

Fl State Concrete Cutting and Core

Drilling Price Quantity True Line Coring and Cutting Price Quantity Diamond Core Drilling

Contact Name: Jonathon Hathorn Matt Nartker Cindy Gilmore Contact Number: 813-352-3134 813-885-4401 800-856-3977

Written Quote (yes/no): No Yes Yes Telephone Quote (yes/no): No No No

Core Drilling -$ 1 6,150.00$ 1 6,150.00$ 8,250.00$ 1 8,250.00$

Service/Good Cost: 6,150.00$ 8,250.00$ Taxes (7.5%):

Shipping:

Handling/Drop Fees:

TOTAL COST: 6,150.00$ 8,250.00$

VENDOR SELECTED: True Line Coring and Cutting Basis of Selection: Lowest bid

50 locations.

35 6" and 15 8"

Concrete coring at approximately 50 locations. 35 for MIP (6") and 15 for MAGS/SB/MW (8")

Not responsive

Project Name/Address: Miller Machinery & Supply Co #2 ERIC_4733 Date:

Detailed description of goods or services required (including total quantity, size, delivery requirements, and all other specifications):

Vendor Name: Description Price Quantity Earth Tech Price Quantity Action Env Price Quantity Drill Pro Contact Name: Charles Bucher John Abbott Todd Hodgson Contact Number: 954-974-2424 813-909-0040 407-426-7885

Written Quote (yes/no): Yes Yes Telephone Quote (yes/no): No No Pre-drill meeting 1300 1 1,300.00$ 0 1 -$ Mobilization & Per Diem Roundtrip 20,000.00$ 1 20,000.00$ 6,500.00$ 1 6,500.00$ Permitting LS 50.00$ 1 50.00$ 200.00$ 1 200.00$ MAGS Install and soil sampling Foot 600.00$ 18 10,800.00$ 418.00$ 18 7,524.00$ Soil Borings Day 150.00$ 6 900.00$ 212.50$ 6 1,275.00$ Shallow (interior well) install each 750.00$ 2 1,500.00$ 911.50$ 2 1,823.00$ MiHPT - DPT services Each 1,700.00$ 15 25,500.00$ 491.80$ 70 34,426.00$ GW Screen Point Sampling Each 850.00$ 10 8,500.00$ 739.00$ 10 7,390.00$ Soil boring adjacent to SP boring Each 650.00$ 10 6,500.00$ 530.00$ 10 5,300.00$ Decon Pad and pressure washer Eacg 1,500.00$ 1 1,500.00$ 1,500.00$ 1 1,500.00$ Drums Each 80.00$ 20 1,600.00$ 50.00$ 8 400.00$ Demobe and restore LS 875.00$ 1 875.00$ 4,500.00$ 1 4,500.00$

Service/Good Cost: 79,025.00$ 70,838.00$ Taxes (7.5%):

Shipping:

Handling/Drop Fees:

TOTAL COST: 79,025.00$ 70,838.00$

VENDOR SELECTED: Action Environmental Basis of Selection: Lowest Bid

FDEP Waste Cleanup Program

COMPETITIVE BID WORKSHEET

3/9/2023

Provide DPT support services for MiHPT investigation. MiHPT to be provided and operated by Columbia. Install monitoring wells, MAGS wells, soil borings and GW screen point sampling as described in the bid form.

Not Responsive

Project Name/Address: Miller Machinery & Supply Co #2 ERIC_4733 Date:

Detailed description of goods or services required (including total quantity, size, delivery requirements, and all other specifications):

Vendor Name: Description Price Quantity Cascade Price Quantity Columbia Price Quantity Dakota Contact Name: Brad Carlson John Sohl Kevin VanDevusse Contact Number: 715-225-8663 727-561-7477

Written Quote (yes/no): Yes Yes Telephone Quote (yes/no): No No

Mobilization Roundtrip 3,500.00$ 1 3,500.00$ 2,450.00$ 1 2,450.00$ Per Diem 520.00$ 27 14,040.00$ 175.00$ 20 3,500.00$ MiHPT daily rate (with operators) Day 4,000.00$ 20 80,000.00$ 3,300.00$ 15 49,500.00$

Project Management/Reporting Day 300.00$ 20 6,000.00$ 4,450.00$ 1 4,450.00$

Service/Good Cost: 103,540.00$ 59,900.00$ Taxes (7.5%):

Shipping:

Handling/Drop Fees:

TOTAL COST: 103,540.00$ 59,900.00$

VENDOR SELECTED: Columbia Basis of Selection: Lowest Bid

3/9/2023

FDEP Waste Cleanup Program

COMPETITIVE BID WORKSHEET

Not Responsive

70-75 total locations. MiHPT data collected to approximately 30 feet or refusal. Lowe Level MiHPT to be used after source zones are identified. Approximatel 20% of total locaitons. Include soil boring and screen point GW sampling at 10 locations (each). Three samples per locations. Terracon is responsbile for boring layout and utility clearance. Raw MiHPT logs to be reviwed by Terracon in near real time.

GeoTek Services, LLC

10 November 2022

To: Dan Nedvidek Terracon 5463 W. Waters Avenue, Suite 830 Tampa, Florida 33634

From: GeoTek Services, LLC 4060 Sparrow Hawk Road

Melbourne, Florida 32934

RE: Utility Locating Services – 80 Bore Locations, 1920 Tampa East Blvd.

Mr. Nedvidek, GeoTek Services is pleased to respond to your request for Utility Locating services at 1920 Tampa East Blvd. located in Tampa, Florida. We will scan up to a 10’ x 10’ area around the 80 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 crayon, marking paint or flags indicating the location of potential underground utilities. 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 fixed price quote for this effort is $2,950.00. 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

November 15, 2022

Mr. Dan Nedvidek, P.G.

Terracon 5463 W. Waters Avenue, Suite 830

Tampa, FL 33634

Subject: Proposal to Perform a Utility Designation Study

Miller Machinery and Supply Company No. 2

Tampa, Florida

GeoView Proposal Number: 10257p

Mr. Nedvidek, 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, INC.

Christopher Taylor, P.G.

Vice President Florida Professional Geologist Number 2256

Proposal

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

Description of Site

The project site is referred to as the Miller Machinery and Supply Company No. 2 and is located at 1920 Tampa East Boulevard in Tampa, Florida. The purpose of the geophysical survey will be to determine the location of underground utilities within a 5 to 10 feet radius of 80 proposed borings. 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 Terracon. No report shall be prepared.

Compensation

It is estimated the scanning will take 2.5 days to complete. Cost to complete the survey will be 2 to 3 days at $1200 per day (not to exceed $3600). 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 Terracon anticipated. If it is determined during the survey that the geophysical survey will not achieve the objectives of the project, Terracon 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.

Requirements of Client

Terracon 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. Terracon 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, Terracon 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.

General Description of Each of The 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 conventional means. The system consists of a dual-function receiver and transmitter. The receiver can be operated in two modes: active and passive. In the passive mode the receiver detects the presence of underground utilities that are energized by a 60-Hertz or other known frequency. These utilities can either be those actually carrying electrical power or those utilities that are both metallic and sufficiently close to the electrical lines to have an electrical field induced within them.

In the active mode, the transmitter deliberately induces an electrical current into the utility. The frequency of this field can be varied from 512 Hertz to 200 kilohertz. The electrical field is induced using a transmitter which is either directly attached to the utility, placed on or above the utility or attached to an induction coil which is placed around the utility. Depths of underground utilities can be determined when the EM equipment is being used in the active mode. Depths are typically accurate to within 10-15 percent of the total utility depth.

Limitations

GeoView shall only be liable for the successful locating of underground utilities or any other under ground 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.

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 survey using the most “up-to-date” 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 conditions. GeoView’s utility locating personnel are all certified GPR and conventional pipe and cable locator operators with extensive in-house training.

When Terracon is working around indicated utilities, a minimum of 2 feet clearance from either side of the marked utility will be maintained.