Loading...
HomeMy WebLinkAbout061024 email - RE_ stormwater and Utility issues at the Mountain View SiteGood afternoon, I am forwarding an email response from Steve King, City of Port Townsend Public Works Director, regarding the stormwater and utility issues at the Mountain View Site. This information came to us via Carrie Hite and has been added to the County website as well. Let me know if you have any questions or concerns. Best regards, Wendy Housekeeper Executive Assistant Board of County Commissioner’s Office P.O. Box 1220 Port Townsend, WA 98368 Office: 360-385-9384 Email: whousekeeper@co.jefferson.wa.us <mailto:whousekeeper@co.jefferson.wa.us> This is a reminder that all email to or from this email address may be subject to the Public Records Act contained in RCW 42.56. Additionally, all email to and from the county is captured and archived by Information Services. From: Steve King <sking@cityofpt.us <mailto:sking@cityofpt.us> > Sent: Monday, June 10, 2024 1:13 PM To: John Mauro <JMauro@cityofpt.us <mailto:JMauro@cityofpt.us> >; Carrie Hite <chite@cityofpt.us <mailto:chite@cityofpt.us> > Subject: stormwater Hi All, For Utilities: Looks like worse case, there may be a water line relocation and possibly a stormwater pipe relocation. These costs would likely be negligible as there would be a requirement for a fire hydrant loop and sprinkler system for the water. The loop could easily be connected to Kearney and Blaine water lines. Stormwater inlets and piping would also be necessary for the parking lots and roof drains; thus, the relocation of the existing storm line could be done at the same time and as part of the same work, just like the water. For Stormwater: According to our stormwater management plan, Kah Tai Lagoon is a receiving water given it is directly connected to the Salish Sea. See below. Thus, stormwater from the Mountain View site can be discharged directly to the existing pipe collection system located in Blaine Street without retention. Below ground infiltration systems are not needed for this site. The current cost estimate has an in-ground retention system cost (see below). Connecting to the existing system would allow the stormwater system to be constructed with water quality facilities only which is included in another cost estimate. Those water quality facilities would address parking lot runoff pollution, while roof water could be discharged without treatment if hard piped to the system. The stormwater management plan does not identify Blaine Street with capacity problems. Therefore, it is likely that all water could be drained to Blaine Street and Kah Tai Lagoon without detention. If detention is required, low-cost detention ponds are an easy solution to delaying runoff. I would suggest that the onsite costs for the stormwater system at Mountain View are relatively low. They would include water quality swales for all parking areas; inlets, roof downspouts and connections to the onsite stormwater pipe, and a pipe connecting the on-site stormwater system to the Blain Street system. The cost estimate for in-ground retention is not needed. If there is something I’m missing, I’m happy to chat. Thanks! Steve Steve King, P.E. | Public Works Director City of Port Townsend | www.cityofpt.us <http://www.cityofpt.us/> | sking@cityofpt.us <mailto:sking@cityofpt.us> 250 Madison St. Suite 2R, Port Townsend, WA 98368 P:(360) 379-5090| C:(360) 531-1631 Follow us on Facebook: fb.me/CityofPT <https://fb.me/CityofPT> CITYOFPT NOTICE REGARDING PUBLIC DISCLOSURE: Public documents and records are available to the public as required under the Washington State Public Records Act (RCW 42.56). The information contained in all correspondence with a government entity may be disclosable to third party requesters under the Public Records Act.