Adam Long Specialties Stormwater Practices Photos About Landscape Architect AdamLong Keller Engineers, Inc. 420 Allegheny Street Hollidaysburg, Pennsylvania 16648 814-696-7430 along@keller-engineers.com Website Summary of Services Land Development, Green Infrastructure, Landscape Design, Commercial Design, Rain Gardens, Park and Recreation Design, Years of Experience: 25 Do you work with homeowners?: Yes Loading... No Records Found Sorry, no records were found. Please adjust your search criteria and try again. Maps failed to load Sorry, unable to load the Maps API.