Gus ThompsonGus ThompsonVP/Business Development, eGeo Services, Inc.VP/Business Development, eGeo Services, Inc.

&&Richard B. Smith, P.E.Richard B. Smith, P.E.

Principal Engineer, eGeo Services, Inc.Principal Engineer, eGeo Services, Inc.

Prepared for:Prepared for:Air and Waste Management Association Air and Waste Management Association

(A&WMA)(A&WMA)Southern Section ConferenceSouthern Section Conference

August 8, 2007August 8, 2007

Successes of Innovative PHOSter II™ Vapor-Phase Remediation

Technology under State Cleanup

Programs

Development & Commercialization of PHOSter II™ Technology

PHOSter II™ Vapor-Phase Process & Capabilities

Remediation Site Case Histories/Lessons Learned

System Improvements & Expansion of Technologies

Presentation Overview

PHOSter was developed by Department of Energy (DOE) Scientists and Researchers

M Seepage Basin, Savannah River Site, Aiken, SC

Largest DOE pilot demonstration to date

Introduced nutrients to conventional bio-sparging & bio-venting processes

PHOSter Development

eGeo was awarded the contract by DOE to redesign PHOSter system in 1996—under the name PHOSter II™

PHOSter II™ technology is viable for remediation of contaminated groundwater

Systems housed in a Small (6-Point) or Large (12-Point) Trailer configuration

PHOSter II™ Process

Vapor-phase nutrient injection to stimulate indigenous microorganisms

Gaseous Injection of: Air (used as Carrier

Gas) Phosphorous (TEP) Nitrogen (optional) Propane (if needed)

PHOSter II™ Process

Biological Air Sparge – 0.5 to 2.0 cfm per injection well

Triethyl-phosphate (TEP) injection encourages bacterial cell division

Pulsed injection process overcomes oxygen and phosphate site limitations

PHOSter II™ Process

Programmable Logic Controller (PLC) allows remote checking of telemetry and System Status (via modem)

eGeo Systems remain on-site for the duration of the remediation cleanup effort

PHOSter II™ Process

Process Flow Diagram

PHOSter II™ Large Trailer

Two Compressors operating 12 Injection Points; rate of 1 to 2cfm per injector

Average Monthly Power Use: 1,056 kWh

Total Power Use (36-month effort): 38,016 kWh

Electrical Power Cost: $84.50/month; $3,042.00/total

Power Costs Summary

PHOSter II™ Small Trailer

One Compressor operating 4 Injection Points; rate of 0.5 to 1cfm per injector

Average Monthly Power Use: 719 kWh

Total Power Use (36-month effort): 25,884 kWh

Electrical Power Cost: $56.80/month; $2,044.80/total

Power Costs Summary

PHOSter II™ Technology has been employed at 24 remediation cleanup sites in various soil matrices and geographic regions in the following locations:

Georgia (2 Sites) Alabama (3 Sites) South Carolina (10 Sites) Florida (7 Sites) Pennsylvania (2 Sites)

eGeo Case Histories

Client: Tom Joiner & Associates, Inc.Tuscaloosa, Alabama Office

PHOSter II™ Small Trailer was mobilized to the remediation cleanup site in September 2003.

Amoco Station, Detroit, AL

In January 2006, all key monitoring wells reached Alabama target limits for Benzene and MTBE.

In October 2006, site was entered into Alabama Post-Remediation Monitoring Period.

In January 2007, ADEM regulators awarded site “No Further Action” (NFA) designation

Amoco Station, Detroit, AL

Amoco Station, Plume Map

Key Monitoring Wells: MW-1 (MTBE Plume) MW-8 (Benzene Plume)

MT

BE

, p

pb

714

829

138

410

19 <5 <5 <50

200

400

600

800

1,000

Aug-03 Dec-03 Mar-04 Sep-04 Feb-05 Sep-05 Mar-06 Jun-06

Date

MTBE Target 102 ppb

Amoco Station Site, MW-1

698

400

42

439

50

125

25 25

0

200

400

600

800

1,000

Aug-03 Dec-03 Mar-04 Sep-04 Feb-05 Sep-05 Mar-06 Jun-06

Date

MTBE Target 102 ppb

MT

BE

, p

pb

Amoco Station Site, MW-8

559

268

129

459

152

416

31

131

0

150

300

450

600

750

Aug-03 Dec-03 Mar-04 Sep-04 Feb-05 Sep-05 Mar-06 Jun-06

Date

Benzene Target 260 ppb

Ben

zen

e,

ppb

Amoco Station Site, MW-8

Client: Tom Joiner & Associates, Inc.Tuscaloosa, Alabama Office

PHOSter ™ Small Trailer was retrofitted and transported to the cleanup site on April 2006.

Circle C Site, Tuscaloosa, AL

PHOSter II™ client training/system startup event was May 3, 2006.

eGeo estimates 24-months to reach MTBE and Benzene risk-based corrective action limits.

Circle C Site, Tuscaloosa, AL

Circle C Site, Plume Map

Key Monitoring Wells: MW-3 (Source Area) MW-11 (Down-gradient)

41 ppb

278 ppb305 ppb

1,460 ppb

376 ppb

0

300

600

900

1,200

1,500

1,800

Apr-06 Jul-06 Aug-06 Oct-06 Mar-07

Date

Benzene Target 518 ppb

Ben

zen

e,

ppb

Circle C Site, MW-3

468 ppb

584 ppb

338 ppb

638 ppb

364 ppb

0

150

300

450

600

750

Apr-06 Jul-06 Oct-06 Mar-07 Jul-07

Date

Benzene Target 102 ppb

Ben

zen

e,

ppb

Circle C Site, MW-11

Client: Enviro-Logical Solutions, Tampa, FL

PHOSter II™ Small Trailer was mobilized to the remediation cleanup site in January 2001.

For the first time, eGeo utilized existing air sparging injection wells (see IP-1 through IP-6)

Former Tenneco Site, Starke, FL

The correction action remediation cleanup site reached Florida target levels for Benzene and Naphthalene in August 2002.

After the FL DEP post-remediation monitoring period (4 Quarters), the site received “No Further Action” letter in 2004.

Former Tenneco Site, Starke, FL

Former Tenneco Site, MW-6

96

139

7 4 91 1 1

0

30

60

90

120

150

Jan-01 Jun-01 Jan-02 Jun-02 Jan-03 Jun-03 Jan-04 Jun-04

Date

Benzene Target 1 ppb

Ben

zen

e,

ppb

Former Tenneco Site, MW-6

33

160

111 9 5

94

0

40

80

120

160

Jan-01 Jun-01 Jan-02 Jun-02 Jan-03 Jun-03 Jan-04 Jun-04

Date

Naphthalene Target 20 ppb

Naph

thale

ne,

pp

b

Client: MACTEC Tallahassee, FL

Office PHOSter II™ Small

Trailer was mobilized to the remediation cleanup site in June 2004.

PHOSter II™ was employed on 4 HDPE injection points for the remediation effort.

Snack & Gas #7, Jacksonville, FL

October 2006 Sampling event indicated groundwater concentrations were reduced by 91%.

eGeo has achieved 50%, 75% and 90% contamination target milestones for this Pay-For-Performance site.

Snack & Gas #7, Jacksonville, FL

1,400

430

2,000

290

1,300

93 75 570

300

600

900

1,200

1,500

1,800

2,100

2,400

Aug-04 Nov-04 Feb-05 Jun-05 Nov-05 Feb-06 Jul-06 Oct-06

Date

Xylenes Target 20 ppb

Xyl

en

es,

pp

b

Snack & Gas #7 Site, MW-1

740

1,200

1,000 1,000

680760

9940

0

200

400

600

800

1,000

1,200

1,400

Aug-04 Nov-04 Feb-05 Jun-05 Nov-05 Feb-06 Jul-06 Oct-06

Date

Toluene Target 40 ppb

Tolu

en

e,

ppb

Snack & Gas #7 Site, MW-24

Dual Compressors for Redundancy and Improved Run-Time Reliability

Well-Head Assembly Improved From Rotometersto Electronically Controlled Air-Operated Ball Valves

System Improvements

More Conservative Approach

to Injection Well Spacing(Tighter Radius of Influence)

Expanding technologies on more contaminated or higherconcentration cleanup sites (ex. iSOC® Technology)

System Improvements

Expands Technologies

1 10 100 1,000 10,000 100,000 1,000,000

PHOSter II™

PHOSter II™/iSOC®

ChemOx

ProductConcentrations, ug/L

Prime Effective Operating Range of Combined Technologies (based on BTEX Concentrations,

ug/L)

Gus ThompsonGus ThompsonVP/Business Development, eGeo Services, Inc.VP/Business Development, eGeo Services, Inc.

&&Richard B. Smith, P.E.Richard B. Smith, P.E.

Principal Engineer, eGeo Services, Inc.Principal Engineer, eGeo Services, Inc.

Prepared for:Prepared for:Air and Waste Management Association Air and Waste Management Association

(A&WMA)(A&WMA)Southern Section 2007 ConferenceSouthern Section 2007 Conference

August 8, 2007August 8, 2007

Successes of Innovative PHOSter II™ Vapor-Phase Remediation

Technology under State Cleanup

Programs