Environmental Remediation Company in PA

About Letterle & Associates

Letterle specializes in the investigation and remediation of petroleum releases, particularly former underground storage tank release locations. Key Letterle personnel have extensive experience with Phase I/II ESAs, geophysical assessments, and redevelopment projects. A growing area of Letterle’s business is assisting clients with their regulatory compliance in areas such as NPDES permitting, spill plans, industrial user permitting, residual waste reporting, and compliance mitigation.

Letterle’s casework to date includes over 400 former underground storage tank release sites, with a majority of those projects funded by state insurance funds or private insurance. Letterle has designed, installed, and operated over 80 soil and groundwater remediation systems at sites in Pennsylvania and West Virginia. The majority of the remediation systems are either
vacuum-enhanced groundwater extraction systems or total (dual) phase
extraction systems.

Letterle & Associates - Allison Park Office

Letterle & Associates - Bellefonte Office

Our Mission

Letterle is a professionally-managed, family-oriented environmental consulting company that will continuously strive to exceed expectations and nurture long-term relationships with its stakeholders, including:

Our Clients

We will provide cost-effective, innovative solutions to our clients’ environmental problems, and tirelessly work to earn and maintain their trust and respect.

Our Employees

We will create a safe and stable work environment with challenging career growth, and will provide positive recognition for exceptional service.

Our Community

We will remain active and responsible members of the communities in which we work and live.

Our Founders

We will continue to capitalize on opportunities to expand and diversify as we hire new employees, develop new services, and expand our geographic reach.