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Letterle views its relationship with clients as a long-term partnership founded upon superior services, technical excellence, breakthrough thinking and an in-depth knowledge of their businesses. We commit to treating each and every client as the most important client we have and continually explore ways to enhance the value of our services.

April 24, 2012
Letterle will display its marketing booth at the annual Handee Marts, Inc./7-Eleven Vendor Appreciation Trade Show at the Four Points Sheraton in Cranberry Twp., PA.

April 2012
Pennsylvania Underground Storage Tank Indemnification Fund has awarded several new competitive bids to Letterle to perfom remediation services at sites in Pittsburgh, Cecil, Hermitage, Uniontown, and Clearfield. The awards resulted from Letterle's corporate strategy to reduce costs and streamline the bid proposal process.

October 1, 2011
Letterle Merges with Chambers Environmental Group, Inc. Click here to read more.

September 19, 2011
Letterle was recently awarded a contract to work at a SUPERFUND project in West Virginia. Our field and office staff are hard at work.

September 19, 2011
Letterle proudly participated in the PIOGA trade show along with 325 other participants on August 30 and 31 in Monroeville PA. The full scale Oil & Gas trade show is the largest in the eastern half of the U.S.A.


Engineers at Letterle conducted a pilot study to determine the feasibility of oxygen injection and the use of bioremediation at a petroleum release site in western Pennsylvania. To learn more about bioremediation and the R&D study, CLICK HERE.

Follow the story of how managers at Letterle oversee the installation of a monitoring well that is a single well then a deep well and finally a nested well by CLICKING HERE.

After a well is installed, Letterle experts explain how to properly develop the well in this presentation. CLICK HERE to read more.

Main Office
2859 Oxford Boulevard
Allison Park, PA 15101
Phone: 412-486-0600
Fax: 412-486-0674
Email: info@letterleassociates.com
Franklin Office
191 Howard Street, Suite 108
Franklin, PA 16323
Phone: 814-432-2167
Fax: 814-432-2632
Bellefonte Office
629 East Rolling Ridge Drive
Bellefonte, PA 16823
Phone: (814) 355-2241
Toll Free: 800-886-9954
Fax: (814) 355-2410