City of Williamsport Lycoming County, PA

River Valley Transit Garage and Office Renovation

Larson Design Group (LDG) completed a feasibility study; provided grant writing assistance; preliminary and final design; and construction administration services for a new CNG fast-fill fueling station and CNG code-compliant modifications to the maintenance garage for River Valley Transit in Williamsport, Lycoming County, Pennsylvania.

The project requirements called for a new private fast-fill fueling station located in a new indoor fueling shelter. A separate fastfill public fueling dispenser was located on a new fueling island. The new fueling station includes credit card/fleet payment card reader technology; a transit style connection and a standard size connection on each of the two dispenser hoses; and an ASME storage vessel and compressor station. To minimize service disruptions to future CNG fueling operations, the design of certain components such as the electric service, equipment pads, and underground conduits included accommodations for additional equipment and expanded capacity.

LDG’s design phase services included preparing the preliminary and final designs for the mechanical, electrical, structural, and civil engineering. The mechanical engineering involved components such as the compressors, tanks, dispensers, dryers, piping, and system controls. The electrical engineering plans and specifications included the electrical distribution and telecommunication design. The structural engineering documents included the foundation and slab design.

Additional design services included coordinating the design approval with the fire marshal; providing an opinion of probable cost at the end of the design phase; designing the emergency backup power system and the lighting and power for the three-sided fueling structure; and identifying the locations of the concrete slabs and foundations for the equipment; and providing design and details for construction.

The civil engineering/site design engineering services included utility coordinating with PA One Call; reviewing zoning and land development ordinances; site grading; curb and paving designs to accommodate the new fueling island and additional compressors; and developing technical specifications.

LDG also provided bid phase and construction administration services. Bid phase services included attending the pre-bid meeting, answering questions during the bidding process, and providing bid tabulation. The construction administration services included reviewing submittals, answering RFIs, attending update meetings, and site visits.

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