James J. Hahn Engineering, P.C.

James J. Hahn Engineering, P.C. is a civil and environmental engineering company specializing in consulting for local municipalities, county government, and private developers for site planning, engineering and construction administration.

James J. Hahn Engineering, P.C. consults for several municipalities in Westchester and Putnam Counties and specializes in reviewing proposed projects before their respective Planning Boards.

James J. Hahn Engineering, P.C. has expertise in all aspects of stormwater management and was one of the firms that comprised the engineering watershed planning consortium for the Stormwater Retrofit Plan developed to bring the Town of Yorktown and nine other Croton Kensico Watershed Intermunicipal Coalition (CKWIC) Municipalities into compliance with the SPDES phosphorus reduction requirements. As part of that study, we investigated over 170 sites in six communities.

James J. Hahn Engineering, P.C. completed the design and construction administration of a 2 million gallon a day water filtration plant and a 1.5 mile 12” water transmission main that crosses I-684 and Saw Mill River Parkway and Muscoot Reservoir.

Our experience also includes design of recreation centers, parks, stormwater management facilities, commercial and residential developments including the design of wastewater treatment facilities and water supply treatment plants and distribution systems. Construction oversight is also part of our expertise which ultimately insures that the owner is rewarded with a project as envisioned by the design professional and the owner.

James J. Hahn Engineering, P.C. has designed numerous parks and recreational facilities, development projects consisting of commercial and industrial office parks, sidewalks and curb projects, subdivisions and related facilities. Included in these facilities is the design of sewage treatment and water treatment plants. James J. Hahn Engineering, P.C. also has worked with the USEPA and NYSDEC in the remediation of polluted sites throughout Westchester County and lower New York State.

James J. Hahn Engineering, P.C. has designed numerous athletic facilities such as softball, baseball, soccer fields and tennis courts and was the lead engineer and construction manager in the design and construction of a 74,000 SF double ice rink facility, including lounge and 10,000 SF health center. Included in this design was all association.