EXH0053017663

.nn,.,on | IFrom: Whiting, Kelly [Kelly.Whiting_METROKC.GOVJ ///_/-//'7 Sent: Thursday, October 25, 20014:55 PM I EXHIBIT NO _1 To: Kenny, Ann; Hellwig, Raymond I /'_'_" '_/ I ' • M. Green i Subject: Pre Low Flow Meeting Briefing Ann/Ray - got the pre-meeting briefingfrom Joe this AM. This was expected per Kate's latest e-mail message. Here is my take on what was discussed, Hydrocomp (Norm Crawford) was hired to do an "independent" review. Their general finding was that they didn't like the approach used. For example, They wanted the impervious area runoff (run-on onto filter strips) to be modeled in HSPF prior to generating inputto embankment model. This was my comment. However, I doubt that it was documented in the sketchy facilitated meeting notes. The issue is discussed somewhat in my comments, and was definitely discussed in great detail during the facilitated meetings. Joe had provided information stating that the approach used was conservative, and that the filter strips could handle all of the run-on from the runways with houdy timesteps. Apparently, now when they look at it,27% of the runoff from the runways is not able to infiltrate into the filter strips.This really sucks in that I raised all these issues, but the Port's consultants were unwilling to do it right, said it didn't matter, and got me to buy into the approach through the facilitated process. The new runs were done using hourlytimesteps. This has same historyas above. I requested/expected they do it that way, but instead they ran…

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PSCAA Advisory Council Meeting Agenda
Add to CalendarMWednesday Mar 11, 9:00am - 11:35am
1904 3rd Avenue, Suite 105, Seattle, WA 98101
Call to order – Roll Call – Quorum Established – Land Acknowledgement We would like to acknowledge that our Agency operates in four present-day counties, which are the traditional lands of the Coast Salish people, past and present. This acknowledgement does not take the place of authentic relationships with indigenous communities in our jurisdiction and [...]