Laserfiche WebLink
KPFF Consulting Engineers <br /> 1601 Fifth Avenue,Suite 1600 <br /> Seattle,WA 98101 <br /> C 206.258.9754 <br /> From:Jelena Vandenhaak<Jelena.Vandenhaak@ContechLLC.com> <br /> Sent: Friday, April 2, 2021 1:24 AM <br /> To: Katie Herold <Katie.Herold@kpff.com> <br /> Cc:Jordan Drugge<Jordan.Drugge@ContechLLC.com> <br /> Subject: RE: [EXTERNAL] RE: Filterra Bioscape vault downstream of FC <br /> Hello Katie <br /> Yes,that flow still works out to be 8x6. <br /> When you get a chance, please send any plans/elevations you have-this is an unusual design for us (downstream of <br /> detention, pumps...), and I would definitely like to run it up by our managers to make sure everything jives prior to bid. I <br /> know we did an initial check but would like for someone more experienced with this type of application to review the <br /> final proposal. <br /> Thank you! <br /> Jelena <br /> Jelena Vandenhaak, P.E.* <br /> Stormwater Consultant,King County <br /> CONTECH Engineered Solutions LLC <br /> Seattle,WA <br /> Mob: 206-730-7946 <br /> 9vandenhaak@conteches.com <br /> www.ContechES.com <br /> *registered in AZ <br /> From: Katie Herold <Katie.Herold@kpff.com> <br /> Sent:Wednesday, March 31, 20214:13 PM <br /> To:Jelena Vandenhaak<Jelena.Vandenhaak@ContechLLC.com> <br /> Cc:Jordan Drugge<Jordan.Drugge@ContechLLC.com> <br /> Subject: RE: [EXTERNAL] RE: Filterra Bioscape vault downstream of FC <br /> Jelena- For Community Transit's Merrill Creek Operations Base we are proceeding with the Bioscape vault downstream <br /> of detention. In order to meet Contech's guidance for using these downstream of detention (24 hrs online, 24 hours <br /> offline) I'm showing two Bioscape vaults. There are two separate pumps that will pump a maximum of the 2-year peak <br /> from the detention system and they will be programmed to alternate pumps every 24 hours. Each pump is connected to <br /> its own Bioscape vault. This will allow one vault to rest for 24 hours while the other vault is receiving runoff. <br /> Can you confirm the 8x6 vault is still the right size for a 2-year peak rate of 0.051 cfs to comply with the 50"/hr max? <br /> Katie Herold, PE <br /> Associate <br /> KPFF Consulting Engineers <br /> 1601 Fifth Avenue,Suite 1600 <br /> Seattle,WA 98101 <br /> 2 <br />