1



# CALGON CARBON CORPORATION Janney Capital Markets Boston and New York City 

# May 25-26, 20112 

# FORWARD-LOOKING INFORMATION SAFE HARBOR This presentation contains historical information and forward-looking statements. Forwardlooking statements typically contain words such as “expect,” “believe,” “estimate,” “anticipate,” or similar words indicating that future outcomes are uncertain. Statements looking forward in time, including statements regarding future growth and profitability, price increases, cost savings, broader product lines, enhanced competitive posture and acquisitions, are included in the company’s most recent Annual Report pursuant to the “safe harbor” provision of the Private Securities Litigation Reform Act of 1995. They involve known and unknown risks and uncertainties that may cause the company’s actual results in future periods to be materially different from any future performance suggested herein. Further, the company operates in an industry sector where securities values may be volatile and may be influenced by economic and other factors beyond the company’s control. Some of the factors that could affect future performance of the company are higher energy and raw material costs, costs of imports and related tariffs, labor relations, capital and environmental requirements, changes in foreign currency exchange rates, borrowing restrictions, validity of patents and other intellectual property, and pension costs. In the context of the forward -looking information provided in this presentation, please refer to the discussions of risk factors and other information detailed in, as well as the other information contained in the company’s most recent Annual Report.3 2010 Revenue % Total ($MM) Revenue Carbon/Service 427.7 88.7%

–Granular, Powder, Pellets

–Coal, Coconut, Wood-based

–Reactivation

–On -site Service Equipment Technologies 46.0 9.5%

–Carbon Adsorption

–Odor Control

–Ultraviolet / Ballast Water Treatment

–Ion Exchange Consumer 8.6 1.8%

–Carbon Cloth

–*PreZerve® 

# CALGON CARBON PRODUCTS AND SERVICES

*Discontinued Product Line4 

# 2010 CALGON CARBON DIVERSE MARKETS Drinking Water 26% (23% in 2009)

Wastewater 17% (19% in 2009) Industrial Processes 14% (17% in 2009) Food 13% (16% in 2009) Air Pollution 19% (15% in 2009)

Specialty 9% (8% in 2009) Consumer 2% (2% in 2009)5 

# CCC’S OPERATIONS ARE GLOBAL6 

# CALGON CARBON’S MAJOR COMPETITORS – Traditional Business

Americas Europe Asia Carbon/Service Norit Carbon Importers Jacobi Siemens ADA- ES (PAC) WestvacoAlbermarle (PAC) Norit Carbon Importers Jacobi Desotec CECA Donau Carbotech PICA Norit Carbon Importers Jacobi Xinhua and other Chinese producers Equipment Siemens WesTech Danaher/Trojan (UV) ITT/Wedeco (UV) Danaher/Trojan (UV) ITT/Wedeco (UV) Danaher/Trojan (UV) ITT/Wedeco (UV) Consumer Blücher – DT Freudenberg – DT Blücher – DT Mast Carbon – ST Carbon Filter Technology – ST Freudenberg – DT Blücher – DT Freudenberg – DT DT = Different Technology ST = Same Technology

# CCC FINANCIAL PERFORMANCE8 

# CALGON CARBON FINANCIAL PERFORMANCE

$MM 2008 2009 2010 2011 Q1 Revenue $ 400.3 $ 411.9 $ 482.3 $ 124.4 Operating Income $ 57.7 (1) $ 53.4 (2) $ 46.3 (3) $ 13.4 Debt $ 9.5 $ 0.0 $ 28.4 (4) $ 27.2 (4) Total Shareholders’ Equity $ 253.3 $ 307.1 $ 343.0 $ 356.0 (1) Includes a legal settlement gain of $9.3MM (2) Includes litigation and contingency charges of $1.0MM (3) Includes litigation and contingency charges of $12.0MM (4) Primarily relates to CCJ9 

# REVENUE AND NET INCOME ARE GROWING Revenue ($MM) Net Income ($MM) 412 482

Restructuring Years 2010 Sales Growth = 17.1% $MM

*Excluding litigation and environmental: $42.3 *

# ACTIVATED CARBON CAPACITY / DEMAND11

Source: CCC Note: The Freedonia Report from June 2010 indicates demand at 98% of production capacity in 2009 and at 100% in 2014.12 

# GLOBAL VIRGIN ACTIVATED CARBON MARKET Raw Material Source 2010 Annual

Demand (MM lbs./yr.) Carbon

Form/Shape Major Markets Served Bituminous Coal 956 Granu lar Powdered Pellets • Water/Wastewater Treatment

• Air Purification • Food/Sweetener • Respirators • Mercury/Fluegas Lignite Coal 99 Powdered • Drinking Water Treatment • Mercury/Fluegas Coconut Shell 333 Granular Powdered • Gold Recovery

• Cigarette Filters • Home Water Filters • Respirators • Water Treatment Wood Based 419 Powdered Pellets • Automotive

• Pharmaceutical • Water Treatment Other Pits/Nutshells 46 Granular Powdered • Automotive

• Water Treatment Total 1,853 Note: CCC manufactures those products highlighted in “green ” CCC distributes outsourced products highlighted in “ red”13 

# CCC CURRENT VIRGIN ACTIVATED CARBON PRODUCTION CAPACITY (MM LBS.) U.S. China Total All GAC 145 22 167 GAC / PAC 117 / 70 22 209 We expect that capacity will be fully utilized in 2011.14 

## WHY DOES CCC SELL OUTSOURCED CARBONS? • Customer Demand • Provide customers the type of activated carbon (raw material, form) that best satisfies their requirements.


### • Increase Market Share • CCC can only produce between 10- 15% of the world’s demand for virgin activated carbon. As a distributor, CCC can increase overall market share by utilizing existing channels to market, and technical support. 

### • Provide Services to Outsource Customers • Adsorption equipment, field support, and reactivation.


### • Low Risk Capacity Expansion • Switch customers from outsourced products to CCC manufactured products. Obtain commitments for CCC manufactured carbon before plant is built. 

### • Outsourcing Activated Carbon Products Produces the following : • Sales $ PGM $ ROI PGM %15 

# EXPANDING PRODUCTION CAPACITY
• Optimize production of existing plants • Additional 30MM lbs. GAC or 70MM lbs. PAC by 2012 

## • Increase virgin GAC availability through customer conversions from virgin GAC to reactivated carbon • Capacity improvement projects at existing facilities 

## • Completed plans for new production line

# COAL AS RAW MATERIAL17 

# U.S. COAL UTILIZATION
• Prime GAC products – metallurgical -grade coal • FLUEPAC® PAC products – non - metallurgical grade coal 

## • Historical 60% of 2010 coal from one supplier • 15-year contract expires 12/31/11 • Escalation through life of contract (price increases have offset 

## higher costs) 

## • Total U.S. coal expense for 2009 and 2010 has ranged from approximately $26.0MM - $29.0MM (less than 10% of CCC’s total COGS)18 

# COAL STRATEGY - 2012
• Strategy • Increase number of vendors for metallurgical coal 

## • Mitigate sole vendor risk • Additional requirements for growth • Identified several new coal sources for whom CCC coal business 

## is very attractive • Pass additional costs to customers • Global price increases initiated November 201019 

# WHY IS CCC A DESIRABLE COAL CUSTOMER? • Big Sandy plant location in “Coal Country” • Coal easily transported from mine to site by truck 

## • Coal handling system specially designed to handle a range of coal sizes • Reliability • CCC’s markets do not fluctuate as steel markets do • Smaller coal producers eager for steady demand

# GROWTH OPPORTUNITIES21 

# GROWTH OPPORTUNITIES 2011 - 2020

Growth Opportunity / Driver Est. Market Size CCC Technology Service TBD Service Mercury Removal $425MM-$640MM/yr Carbon Control of Disinfection Byproducts $100MM+/yr Carbon/ Service Control of Cryptosporidium (U.S. Regs) $250MM Total UV Ballast Water Treatment (International Regs) $15B Total UV Personal Protection (CBRN* Threat) TBD Carbon Cloth * Chemical, Biological, Radiological, Nuclear22 

# SHORT-TERM SALES GROWTH OPPORTUNITIES (dollars in millions) 2010 2011 Acquisitions: Carbon and Service $40.0 Additional 3 Months for CCJ (Q1) (1) Equipment (Hyde) 5.0 Backlog and New Orders (2) Reactivation: Feluy Expansion - Beginning in 2H11 Suzhou Plant - Beginning in Q4 Potable React from Virgin - Throughout the Year(3) Price Increase - Announced Q4 2010 Mercury Removal 13.6 New Products + New Orders Potable Water 9.8 DBP Compliance F/X (3.2) TBD Other, Net 5.2 TBD $70.4 TBD (1) First quarter 2011 incremental CCJ sales impact = $17.9 (2) During the first quarter 2011, Hyde has responded to approximately 120 bid proposals. Backlog at March 31, 2011 is $33.4 (3) Phoenix region request for proposal consistent with CCC’s strategy – see Slide #38

# SERVICE24 

# 2011: YEAR OF REACTIVATION

Remove spent carbon Reactivation

Furnace
Original Virgin Carbon or Make- up Off-gas treatment

Reactivated carbon transported to customer site Contaminants Destroyed Spent carbon transported To Reactivation center25 

# REACTIVATION IS ATTRACTIVE ALTERNATIVE TO VIRGIN GAC Advantages to Customer • Economic – Lower cost than virgin activated carbon 

## • Environmental – Reduces customer disposal requirements and liability • Security of supply • CCC is market leader (160MM lbs. current capacity) • Trouble-free operation • Full service from CCC (supply GAC, reactivate spent GAC, supply reactivated GAC and virgin GAC make- up)26 

# REACTIVATION IS ATTRACTIVE ALTERNATIVE TO VIRGIN GAC (Cont’d) Advantages to CCC • High margin business 

## • Lower production costs • Reduces coal consumption by 90% vs. GAC production • Reduces electricity consumption by 40% vs. GAC production 

## • Lower capital cost to construct react facility vs. “greenfield” GAC production facility • Significant reduction in greenhouse gases vs. GAC production • Long-term contracts = predictable earnings stream 

## • Increases availability of virgin GAC27 

# REACTIVATION STRATEGY – GEOGRAPHIC EXPANSION28 

# STATUS OF REACTIVATION EXPANSION Facility Number Lbs. Estimated Start-up Feluy, Belgium 30 MM 2Q11 Suzhou, China 15 MM 4Q11 North Tonawanda, NY 13 MM 2012 Subtotal *58 MM Current Capacity 160 MM Total 218 MM * Current customer “commitments” for Feluy and Suzhou >60% of capacity

# MERCURY REMOVAL30 

# MERCURY CONTROL REGULATIONS North America Regulations Under

Consideration Date of Enactment Compliance Dates U.S. Coal - Fired Power Plant (Utility MACT) *November 2011 2014 - 2015 Canada Coal - Fired Power Plants (by Province) 2010 and Beyond 2010 and Beyond U.S. Cement Manufacturing August 2010 2013 U.S. Industrial Boilers **Comment Period N/A U.S. Gold Mining/Processing December 2010 2013 - 2014 *As proposed by EPA **February 2011 EPA regulation delayed. Comment period ends July 15, 201131 

# UPDATE: MERCURY REMOVAL FOR COAL-FIRED POWER PLANTS
• U.S. proposed Mercury and Toxic Standards Rule (Utility MACT) issued by EPA 3/16/11 • Requirements and timing as expected • Prevent 91% of mercury contained in coal from release to air • Final Rule to be issued 11/16/11 

## • Compliance: November 2014 with possible one-year extension 

## • China – Could begin treatment 2016/201732 

# IMPLICATIONS FOR PAC USAGE UNDER EPA REGULATION* • Carbon usage dictated by: • Type of coal used by power plant • Existing abatement equipment at power plant • Other abatement requirements included in Rule: acid gases, non mercury metals, and organic air toxics • Transport Rule 

# • 93 GW will require activated carbon injection by 2015 (EPA estimate) • Validates CCC’s estimate of North American market size: 500MM – 750MM lbs. per year 

# • Orders for PAC could begin several months before compliance date *CCC estimates unless otherwise noted33 

# CCC A LEADER IN MERCURY REMOVAL
• Added 70MM lbs. PAC capacity for FLUEPAC® carbons – 2009 

## • FLUEPAC PAC products currently used in 18 plants (> 9,000 MW generating capacity) • Developing additional capacity via commercial strategy and 

## manufacturing de- bottlenecking – now • Awarded four contracts in 2010 • Four outstanding bids34 

# KEY MARKETING STRATEGY: DEVELOPING INNOVATIVE PRODUCTS
• Developed enhanced performance products over two years • 11 successful full -scale trials at power plants 

## • New products reduce customer cost • Carbon injection rates 50% lower than alternative products • Fewer deliveries = lower transportation costs • Lower particulate loading to ESP/baghouse • Less PAC in fly ash = more “concrete friendly”

# DISINFECTION BYPRODUCTS36 

# WHAT ARE DISINFECTION BYPRODUCTS? Disinfection Byproducts (DBPs) form when disinfectants used to treat drinking water react with Naturally Occurring Materials (NOMs) in the water (e.g.; decomposing plant material). Trihalomethanes Chloroform Bromodichloro Methane 

### NOMs + Cl 2 Halo Acetic Acids Dichloroacetic Acid Trichloroacetic Acid37 

# EPA’s DBP Rule Compliance Schedule

Type Population Served by Water

Treatment Facility Date of Compliance Schedule 1 ≥ 100,000 January 2013 Schedule 2 50,000 – 99,000 July 2013 Schedule 3 10,000 – 49,999 July 2014 Schedule 4 < 10,000 July 201538 

# WHY DBP IS GROWTH OPPORTUNITY FOR CCC?
• GAC proven solution to prevent and/or eliminate DBPs • Market Size: 100+ MM lbs. GAC per year (or equivalent) • 2009 = 17MM lbs. • 2010 = 32MM lbs. • 2015 = 100+ MM lbs. 

## • CCC is market leader • $35MM in contracts (2008 – 2010) 

## • Supports reactivation strategy • Driver to convert municipalities to reactivation • NSF certifications currently at two plants 

### • More virgin GAC available for other markets • CCC one of two companies invited to bid on building reactivation facility for Phoenix region which includes a 10-year reactivation contract

# UV TECHNOLOGIES40 

# UV OPPORTUNITIES TRADITIONAL UV BUSINESS
• Drinking Water Disinfection Cryptosporidium and Giardia 

### control 

## • Wastewater Disinfection Reduction of chlorine discharge to the environment or treatment for reuse 

## • Oxidation Destruction of contaminants in 

### drinking water or wastewater41 

# UV MARKET – MUNICIPAL WATER APPLICATIONS (dollars in millions) 

### Drinking Water $ 62 $124 12% Regulations and Water Scarcity Wastewater* $192 $350 11% Water Scarcity 

### Reuse $ 41 $119 19% Water Scarcity World Mkt. World Mkt Mkt. CAG Market Driver
$295 $593 12% 2009

*Non reuse 

### 2015 

### Projected

# BALLAST WATER TREATMENT43 

# WHY BALLAST WATER TREATMENT? The issue: Transfer of invasive species via ships’ ballast water44 

# MARKET DRIVERS Regulations • International Maritime Organization (IMO) adopted International Convention for the Control and Management of Ships’ Ballast Water and Sediments (BWMC) • Sets framework for legislation for 169 Member States • With Iran’s recent ratification, current parties to the BWMC total 28 representing 25.4% of the world’s tonnage 

## • Ratification of the BWMC is currently expected to occur in 2011 • U.S. Coast Guard finalizing rule: • Phase 1 similar to the IMO standard (anticipated August 2011) • Phase 2 more stringent. Will be evaluated as an option.45 

# MARKET DEMAND

2011 2014 2017 2019 2020 2022 Total Existing {<1,500 CM or >5,000 CM} 10,000 10,000 20,000 Existing {1,500 CM >=<5,000 CM} 5,000 5,000 10,000 New {>5,000 CM – constructed in 2009-2011} 1,200 1,200 2,400 New {>5,000 CM} 1,200 1,200 1,200 1,200 1,200 6,000 New {<5,000 CM} 540 540 540 540 540 540 3,240 Total 540 1,740 6,740 17,940 12,940 1,740 41,640 

# Estimated number of vessels affected by regulations:

Source: CCC46 

# SELECTED BALLAST WATER TREATMENT COMPETITORS Competitor Technology • Alpha Laval – Sweden Filtration & UV/AOP • OceanSaver – Norway De-oxygenation, 

# cavitation, electrolysis • Panasia – S. Korea Filtration & UV • Optimarin – Norway Filtration & UV 

# • Severn Trent – U.S./UK Filtration & Electrochlorination • Techcross – S. Korea Electro-chlorination47 

# HYDE GUARDIAN ®
• Hyde Guardian Product 

## Description • Two stage treatment system • Filtration – Modular stacked disk 

## • Disinfection – High intensity UV48 

# MARKET POSITION – HYDE GUARDIAN
• Type Approval System (IMO and Russian Maritime Register of Shipping • Low capital / installation / operating cost 

## • Straightforward and fully automated operation • Chemical free disinfection • Simple and effective filtration • More than 100 systems sold to date • Market development accelerating • CCC received more than 120 bid proposals in Q1 2011 • Adding manpower49 

# GUARDIANTM VALUE PROPOSITION
• Filtration - Stacked Disk Technology • Advantages over other separation technologies • Less maintenance than screen filters 

### • Flexible footprint • Cost competitive 

## • Disinfection - UV • Advantages • No chemicals required • Suitable for fresh water applications

# Leave Nothing But Your Wake

# 2010 ACQUISITONS52 

# THREE ACQUISITIONS COMPLETED IN Q1 2010 Acquisition/Technology (Location) Purpose Examples of Integration Items Outstanding Zwicky/Carbon and Service (Europe) Growth in Northern Europe Complete Calgon Carbon Japan/Carbon and Service (Japan and Asia) Growth in Japan and Asia • Re- locate laboratory • Integrate SAP Est. Completion: 3Q11 Hyde Marine/UV (Global) Growth through participation in new ballast water treatment market • Expand UV facility • Expand UV organization53 

# CALGON CARBON JAPAN
• Predecessor company founded in 1979 • Business = Activated Carbon and Reactivation 

## • Employees at 3/31/10 = 54 • 2010 Sales = $67.8MM • Margins lower than CCC’s average54 

# CALGON CARBON JAPAN PRODUCTS AND SERVICES Products Supplier Major Market(s) Market Share Comment Coal - Based GAC CCC Municipal Water, Municipal Wastewater, Food, Environmental Water, Chemicals #1 GAC from U.S. and China Pellets China DeSox/DeNox (Steel Industry) #1 PAC Outsourced

Products Municipal Water (Taste &

Odor) Coconut AC Outsourced

Products Specialty Reactivation CCJ -owned

plant (Japan) Specialty 6.6MM lb. capacity55 

# CALGON CARBON JAPAN HAS FIVE LOCATIONS56 

# CCJ COMPETITORS
• Kuraray • Osaka Gas/JEC 

## • Imported Carbon Products57 

# CCJ UPDATE
• Completed purchase 3/31/11 • Integration • Scheduled for completion 3Q11 

# • Impact of Earthquake/Tsunami • No damage to facilities 

## • Slight adverse impact on sales in March 

# • Timing for additional business opportunities from Earthquake/Tsunami dependent upon Japanese 

# government decisions

# Thank You!