1707 SCENIC DR SNO CO PUD 2020-03-10

r , SEPA ENVIRONMENTAL CHECKLIST FOR Beverly Park Switching Station Expansion AGENCY P.U.D. NO. 1 of Snohomish County USE 11. Description of the proposal, including the proposed uses and the size of the project and site. • The proposal is part of the overall plan to add reliability and capacity to the District's electrical system by modifying and expanding the existing Beverly Park Switching Station located on the north east corner of Beverly Boulevard and Scenic Drive. • The current project will expand the existing 115kV switching station to include a 230kV yard and transformation from 230kV to 115kV. • The existing 115kV switching station yard will be re-constructed to include 14 line positions. The proposed 230kV yard and two 230kV to 115kV transformers will be installed. A prefabricated control facility will be installed to accommodate relays, controls, communications, batteries and other auxiliary equipment. • The 115kV equipment and the 230kV/115 kV transformers will be installed on the westerly portion of the project and the 230kV equipment will be installed in a 230kV yard at a lower elevation to the east of the existing 115kV yard. • Retaining walls and an embankment will be constructed to provide a lower level area to the east for the 230kV equipment. • The existing switching station will expand to the north and east to provide increasing the fenced area from about 1.3 acres to 4.2 acres. The total project area is approximately 5.6 acres. • The project will include security fencing, embankment, storm drainage system, oil containment system and the construction of retaining walls to provide two level areas for the installation of electrical equipment. • The electrical equipment at the site will include: 230kV to 115kV transformers, switches, overhead bus and conductors, grounding system, vaults, equipment control enclosure, transmission terminations and all other associated components. • Existing access from Scenic Drive will be modified and utilized. (09