How to Contact Us

Lewiston Office

William M. Peterlein, P.E.
Co-owner and President, Principal Engineer
bpeterlein@summitgeoeng.com

Kevin R. Farrar, P.L.S.
Senior CADD Technician and Professional Licensed Surveyor
kfarrar@summitgeoeng.com

Brett Deyling, P.E.
Senior Engineer
bdeyling@summitgeoeng.com

Mat Hardison, E.I.
Geotechnical Engineer
mhardison@summitgeoeng.com

Rockland Office

Craig W. Coolidge, P.E.
Co-owner and Vice President, Principal Engineer
ccoolidge@summitgeoeng.com
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Erika Stewart, P.E.
Senior Geotechnical Engineer
estewart@summitgeoeng.com