Building lifetime relationships with our clients and employees.

Cornerstone Presentation Title Slide A Sub Title Goes Here

February 20, 2014

Building lifetime relationships with our clients and employees.

Cornerstone Presentation Title Slide BSub Title Goes Here

February 20, 2014

Building lifetime relationships with our clients and employees.

Cornerstone Presentation Title Slide CSub Title Goes Here

February 20, 2014

Sample Interior Slide

• Level 1 with Bullet, News Gothic MT, 26pt

• Level 2 with Bullet, News Gothic MT, 23pt

• Level 3 with Bullet, News Gothic MT, 20pt

• Level 4 with Bullet, News Gothic MT, 17pt

•Level 5 with Bullet, News Gothic MT, 14pt

© 2014 Cornerstone. All rights reserved. | Confidential 4

Mission Statement

• Provide the highest quality of services, from project concept through completion.

• Focus on responsiveness and superior client service that exceeds our clients’ expectations on every project.

• Provide a rewarding and challenging work environment that invites innovation and a strong passion for our work.

© 2014 Cornerstone. All rights reserved. | Confidential 5

Operational Locations

• Bolingbrook, IL• Cincinnati, OH Colbert, WA• Exton, PA• East Brunswick, NJ• Farmington Hills, MI Ft. Lauderdale, FL Grand Rapids, MI• Greenwich, NY• Jacksonville, FL Kansas City, KS• Logan, OH• Madison, WI• Middletown, NY Oceanside, CA• Pittsburgh, PA• Plymouth, WI Reading, MA• Rochester, NY Springfield, IL St. Louis, MO• Tucson, AZ

Office Locations

© 2014 Cornerstone. All rights reserved. | Confidential 6

Office Locations

Satellite Offices

Headquarter

Management Team A

Richard A. Peluso, P.E.President

Dennis G. Fenn, P.E.Senior Vice President

Matthew E. DaviesVice President, Business Development

Kenneth J. KarlVice President, Operations

West

Paul Stout, P.E.Area Manager, Dublin, CA

Garth Bowers, P.E.Area Manager, Tucson, AZColbert, WA

Central

Mark Torresani, P.E.Area Manager, Madison, WIPlymouth, WI

Adam Larky, P.E.Area Manager, Farmigton Hills, MIGrand Rapids, MIBolingbrook, ILSt. Louis, MOOverland Park, KS

Bruce Schmucker, P.E.Area Manager, Cincinnati, OHLogan, OHSpringfield, IL

East

Gary DiPippo, P.E.Area Manager, Middletown, NYRochester, NYGreenwich, NYExton, PAPittsburgh, PAReading, MAEast Brunswick, NJ

Michael S. Michels, P.E.Vice President, Technical

Dave Damon, CFOJames Bradley, LegalCathie Swyka, CAO

© 2014 Cornerstone. All rights reserved. | Confidential 7

Management Team B

Richard A. Peluso, P.E.President

Dennis G. Fenn, P.E.Senior Vice President

Matthew E. DaviesVice President, Business Development

Kenneth J. KarlVice President, Operations

West

Paul Stout, P.E.Area Manager, Dublin, CA

Garth Bowers, P.E.Area Manager, Tucson, AZColbert, WA

Central

Mark Torresani, P.E.Area Manager, Madison, WIPlymouth, WI

Adam Larky, P.E.Area Manager, Farmigton Hills, MIGrand Rapids, MIBolingbrook, ILSt. Louis, MOOverland Park, KS

Bruce Schmucker, P.E.Area Manager, Cincinnati, OHLogan, OHSpringfield, IL

East

Gary DiPippo, P.E.Area Manager, Middletown, NYRochester, NYGreenwich, NYExton, PAPittsburgh, PAReading, MAEast Brunswick, NJ

Michael S. Michels, P.E.Vice President, Technical

Dave Damon, CFOJames Bradley, LegalCathie Swyka, CAO

© 2014 Cornerstone. All rights reserved. | Confidential 8

Service Capabilities

• From Conception to Completion

• Environmental and remediation services

• Hydrogeology services

• Operations and maintenance

• Air quality services

• Site and civil design services

• Biogas services

• Landfill engineering and design

• Transfer, recycling, and processing facilities

© 2014 Cornerstone. All rights reserved. | Confidential 9