Total Solutions for Today’s Complex Markets

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NAES Corporation

Corporate Overview

Experienced

Transparent Sustainable

Independent
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Corporate Summary

NAES Corporation

 Founded 1980 providing project management and construction services

 32 years of engineering and construction experience.

 20 + million craft labor hours

 2,700 employees, $400+ million in revenues and 35 GW of power

 World leader in third-party O&M management 

 O&M track record of 195 facilities and 57,500 megawatts

 Includes 144 takeovers and 51 greenfield

 Focused and experienced leadership team and support infrastructure
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NAES US Locations

NAES Offices Provide National Support and Response 

NAES Power Contractors – 

Midwest Operations (MO)

NAES Power 

Contractors – Eastern 

Operations (PA)

NAES Turbine Services, 

Operational Maintenance 

Services and Staffing 

Services (TX)

NAES HQ – Western 

Operations & Technical 

Support Services (WA)

ITOCHU International 

– NAES Parent (NY)

NAES NC – Eastern 

Operations (NC)

NAES Power Contractors

Western Operations (OR)

NAES CP – Eastern 

Operations & 

Environmental (NJ)

Operational Maintenance 

Services (NC)
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O&M Experience

Technology No. of 

Plants

MW

Combined Cycle 79 36,968

Simple Cycle 53 11,642

Biomass 11 411

Coal/Waste Coal 19 5,014

Reciprocating Engine 10 610

Industrial Boiler 5 1,340

Hydroelectric 2 48 

Wind 5 650 

IGCC/Geothermal 2 340 

DH&C 4 295

Waste to Energy 3 98

Landfill Gas 1 3

Processing 1 N/A

Solar 1 N/A
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Air

Permit Compliance

Testing/Monitoring issues

Reporting

CEMS 

Title V

Acid Rain

CAIR, GHG

MACT

Water

NPDES

Stormwater

Water Usage

Water Treatment

SPCC

 Land

Waste Management

Hazardous Waste

Chemical Storage

Spill Prevention

Remediation

Ground Water

CCR’s

Chemical Reporting

Right to Know

Form R / TRI

DHS CFAT

Conducted 

Business 

In 33 States &

140 Facilities

NAES Environmental Services
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GEA and GEA EGI

GEA Group Aktiengesellschaft

• Large system provider for food and energy processes 

• HQ in Bochum, Germany, present in more than 50 countries

• ~ 24,500 employees 

• EUR 5.7 billion revenues in 2012

• Business segments: 

Heat Exchangers (HX)

Mechanical Equipment

Process Engineering

Food Solutions

Farm Technologies

Refrigeration Technologies
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GEA and GEA EGI

GEA EGI Contracting Engineering Co Ltd.

• Member of HX segment within the GEA Group

• HQ in Budapest, Hungary

• Key products:

• Heller® type dry cooling systems

• BoP systems for the power industry

• Circumix® dense slurry ash handling systems
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CCR & ELG Rule Impacts

CCR: Coal Combustion Residuals

40 CFR 257 Subpart D

Proposed EPA Rules for Regulating :

Fly Ash, Bottom Ash and Gypsum in Surface Impoundments Including

Impoundment Design/Operations, Fugitive Dust,

Ground Water Protection 

ELG: Effluent Limitations Guidelines

40 CFR Part 423

Proposed EPA Rules for Regulating:

FGD Wastewater, Fly Ash Transport Water,

Flue Gas Mercury Control (FGMC) Water

Bottom Ash Transport Water, 

Gasification Wastewater, Coal Pile Runoff

Leachate, Metal Cleaning Wastewater
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Pending Rule Changes Driving Transition Away from Traditional Wet Slurry

 Plants Closing Impoundments 

or Converting Away from 

Traditional Wet Slurry Systems

 Traditional Wet & Dry Systems 

Have Disadvantages

 Need For Better Ash 

Management & Storage

 Circumix Dense Slurry 

Technology Offers Advantages 

over Wet and Dry Systems Lean Slurry Ash Impoundment

Circumix Dense Slurry Technology
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Circumix Dense Slurry Technology

What is Circumix Dense Slurry Technology?

 Intense Mixing that Maximizes Availability of Reactive Ions

 Mixes Wastewater with Fly Ash, Bottom Ash and/or Gypsum

 Additives Not Required

 Water to Solids Ratio ~1:1

 Slurry Pumpable 10 km +

 Slurry Sets in 24 – 72 Hours

 Product Exhibits:

 Low Hydraulic Conductivity

 High Compressional Strength

 Zero Discharge of Transport Water 

 Enhanced Metals Sequestration

Dense Slurry Discharge
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Circumix Dense Slurry Technology

Who Developed and Who Offers the Technology?

Largest Third-Party O&M Company GEA EGI Developed Dense Slurry

O&M Track Record of 195 Facilities 

and 57 GW

Provides Heller® Type Dry Cooling & 

BoP Systems for the Power Industry

2,700 Employees, $400+ Million in 

Revenues

GEA Group: $7.4 Billion Revenues

GEA EGI $130 Million Revenues

Currently Operating 35 GW of Power 

Facilities (114 plants)

GEA EGI is a Member of HX segment 

Within the GEA Group

NAES and GEA have Teamed to Deploy Circumix Dense Slurry Technology and 

for NAES to be the Exclusive Provider of this Technology in North America

GEA EGI Co.Ltd.
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Past, Current and Future Dense Slurry Technology Use

Plant Country Ops.

Year

Capacity

MW

BA TPH FA TPH Total 

Slurry m3

Pannon

Hőerőmű Zrt.

Hungary 1991-2000 200 38.8 155.2 6,480,000

Tatabányai

Erőmű Kft.

Hungary 1993-2000 30 - 20 840,000

AES Borsodi Energetikai 

Kft.

Hungary 1996-2000 200 24 156 2,400,000

Matra Hungary 1998- 836 80 (FGD) 640 23,040,000

SC Collterm SA Romania 2000- 50 3 20 1,050,000

Jacksonville

Northside Generating

Station

USA

2003- 600 63 (FGD) 63 6,720,000

SC Collterm SA Romania 2002- 50 3 17 840,000

Rovinari Power Plant Romania 2010- 1 720 120 (FGD) 508 1,140,000

Craiova II.

Power Plant

Romania 2010- 300 18.4 (FGD) 204 760,000

Isalnita Power Plant Romania 2010- 630 28 (FGD) 220.8 466,600

Spectrum Coal and 

Power

India Under Const. 50 15.6 36.4 -

Turceni Romania Under Commis. 1320 120 (FGD) 440 -

Circumix Dense Slurry Technology
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Dense Slurry System Installations

Jacksonville Unit, 2003

2 X 62.5 Ton/Hour Units

In Operation Since 1991

Scale: 4 X 190 Tons/Hour (E. Europe)

Circumix Dense Slurry Technology
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Disadvantages of Wet (lean) Slurry and “Dry” Ash Management

Traditional Lean Slurry Cons Traditional Dry Management Cons

High Water Use Relatively High Capital/Operating Cost

Waste Water Management High Risk of Fugitive Dust

Risk of Flow if Released Multiple Handling for Transport

Stringent Dike Inspection & Maintenance Increased Safety Risk from Trucks

Risk of Ground Water Contamination Impoundment Heavy Equipment Required

Will Become Airborne if Dry Relatively High Hydraulic Conductivity

Process Water Leachate High Storm Water Leachate Volumes

Variable Hydraulic Conductivity Ground Water Risks

Complex Closure Requirements High Labor Costs (dust supp. fuel mgt., 

security, lighting, etc.)

Circumix Dense Slurry Technology
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Features & Advantages

Solid, Non-Dusting Product

Significantly Reduced Fugitive Emissions

Cured Comp. Strength Typically 600-2000 psi

Eliminates Risk of Liquefaction & Spills

Simplifies Impoundment Design

Reduced Inspection Requirements

Increased Ash Storage in Existing Space

Low Hydraulic Conductivity (10-4 – 10-10)

Enhanced Metals Sequestration

Reduced Leachate Generation

Reduced Risk of Groundwater Contamination

Lower Post-Closure Risks

Dense Slurry Advantages Pursuant to CCR Proposed Rule

Circumix Dense Slurry Technology

Superior Environmental Properties
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Advantages Pursuant to ELG Proposed Rule

Circumix Dense Slurry Technology

 Effective Combined Stabilization of Ash & Wastewater

 80%-90% Reduction of Water Use for Ash Management

 Zero Discharge of Transport Water

 Leachate can be Reprocessed = Zero

Discharge Impoundment

 Reduction of Plant-Wide Wastewater 

Generation

 Enhanced Protection of Ground Water from

Low Hydraulic Conductivity

 Low Hydraulic Conductivity = Low Leachate

Volumes

 Proven Technology, Low Complexity, Low Life-Cycle Cost, Ability to Utilize 

Existing Infrastructure ,Energy Efficient, Can Achieve Effluent Standards

Active Dense Slurry Impoundment
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Solidified Product

Dense Slurry System Final Ash Disposal

New Dike Borrow Material

Elevated Landfill

Circumix Dense Slurry Technology

No Incidents of Slope Failure, Seepage or 

Liquefaction
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Stabilized Ash Performance

Example of Slurry Composition, Total Metals and Leach Performance

Slurry Make-Up Total Metals and Leach Performance (mg/L)

Components Wt % Metal Total Leach pH Adjust

Fly Ash 35.1 As 36.9 0.14 0.069

Coarse FA 10.5 Ba 71.6 0.06 0.4

Economizer Ash 2.5 Ca 55770 587 2017

Bottom Ash 4.3 Cd 0.138 0.0004 0.009

Water 37.1 Cr 13.17 <0.05 0.089

FGD Water 2.1 Cu 23.63 <0.02 0.57

Lime Pre-Treat (ion 

exchange) Water

8.4 Hg 0.093 <0.001 <0.001

Mn 336 <0.02 8.88

Slurry Density 1.33 g/cm3 Pb 6.06 <0.005 <0.005

V 48.8 <0.008 <0.005

Circumix Dense Slurry Technology
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Examples of Physical Properties of Cured Dense Slurry Product

Sample Water Cure Time 

Days

Water-Ash

Ratio

Hydraulic

Cond. cm/sec

Wet 

Density

Comp. Strength

lb/ft3

1 Indust. Water 90 1.3:1 6.8E-9 1.61 25,396

2 80% FGD 90 1:1 1.0E-10 1.51 31,014

3 Indust. Water 90 0.8:1 2.1E-9 1.76 166,391

4 100% FGD 90 0.8:1 1.0E-10 1.71 147,720

5 80% FGD 90 0.8:1 1.0E-10 1.76 147,970

6 100% FGD 90 0.9:1 1.3E-05 1.56 13,387

7 80% FGD 90 0.9:1 4.2E-06 1.61 27,004

8 80% FGD 30 1.3:1 6.0E-07 -- --

9 80% FGD 60 1.3:1 4.8E-07 -- --

10 Indust. Water 90 1.3:1 1.2E-07 1.42 13,889

11 Indust. Water 90 1.3:1 1.1E-07 -- --

12 100% FGD 90 1.3:1 3.5E-09 1.52 24,331

13 80% FGD 90 1.3:1 1.9E-08 1.50 22,639

14 80% FGD 60 1.3:1 1.2E-08 -- --

15 80% FGD 30 1.3:1 1.1E-07 -- --

Circumix Dense Slurry Technology
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Dense Slurry System Ash Testing

Treatability Testing Performed 

 Particle Size Distribution

 Porosity - Hydraulic Conductivity

 Chemical Composition

 Rheology – Flow Dynamics

 Compressional Strength

 Leach Resistance

 Water Stoichiometry Minimal Free Water

72-hr Load Test

Circumix Dense Slurry Technology
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 Ash/Wastewater Testing Programs 

can be Performed On Site

 Ash & Wastewater can be

Shipped and Tested Remotely

 Testing is Performed on Several

“Recipes” to Establish Optimum Mix

 Test Scale of 1.5 tons/hr Facilitates 

Accurate Scale-Up Cost Analysis

 Testing Facility is Skid-Mounted and 

Contained in One 20-ft. Shipping 

Container

 Test System is Autonomous of 

Plant Support and Stand-Alone

Circumix Dense Slurry Technology

Modular Test Unit

Dense Slurry System Ash Testing
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Contact Information

Summary

Circumix Dense Slurry Technology Effectively Addresses all of the 

Challenges Presented by the Proposed CCR and ELG Rules for a Cost 

that is Less than Traditional Dry Ash Management
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Contact Information

Thank You for Your Time -- Contact Information