1815 13TH ST SEPA 016 - 013 - PRMC NEW CLINIC BUILDING Land Use Decision Documents 2025-04-21

EVALUATION FOR AGENCY USE ONLY The proposal would not affect the potential use of solar energy by adjacent properties. c. What kinds of energy conservation features are included in the plans of this proposal? List other proposed measures to reduce or control energy impacts, if any: The main HVAC system for the clinic will utilize heating and cooling recovery systems which are very efficient and minimize the use of electricity. 7. ENVIRONMENTAL HEALTH a. Are there any environmental health hazards, including exposure to toxic chemicals, risk of fire and explosion, spill, or hazardous waste, that could occur as a result of this proposal? If so describe. There are no environmental health hazards associated with the construction or use of the parking lot. Spills or leakage of fuel or oil from automobiles may result from the use of the parking lot, but not above the existing levels and it is not expected to impact the environment. 1) Describe any known or possible contamination at the site from present or past uses. In April 2007, GeoEngineers performed a Phase I ESA of the Everett Community College Site located at 13th Street and Rockefeller Avenue in Everett, Washington. This assessment revealed the following evidence of RECs in conjunction with the property: 1. There is a closed -in -place UST that was formerly used for Bunker C and diesel fuels associated with heating the gymnasium facility. USTs are a potential source of contamination to surrounding soil and groundwater. In the absence of specific data regarding subsurface conditions surrounding the closed -in -place UST, it is our opinion that there is moderate risk of impacts of regulatory significance to subsurface soil and/or groundwater surrounding this closed -in -place UST. Further evaluation of this uncertainty would require additional research, subsurface exploration, sampling and/or testing. 2. Underground fuel piping associated with the existing diesel AST is considered a REC because below -grade fuel piping is a potential source of contamination to surrounding soil and possibly groundwater, depending on the burial depth of the piping. In the absence of specific data regarding subsurface conditions surrounding the fuel piping, it is our opinion that there is moderate risk of impacts of regulatory significance to subsurface soil and/or groundwater surrounding the underground fuel piping associated with the existing diesel AST. Further evaluation of this Environmental Checklist — Providence Regional Medical Center Everett — North Site Page 15 © SHO -nl