HomeMy WebLinkAboutRE Tiffany Park Early Clear and Grade 16055Ann,
Sorry for the confusion around the basin area breakdowns for the TESC pond sizing’s. Referencing the calculations located within Exhibit H of the revised SWPPP we have provided the Input
and Output files for both basins at 15-Minute time steps. The Basin Map included within that sections shows the respective tributary areas for each pond and their impervious/pervious
coverage, which matches the input files.
Please note that the Impervious areas shown include only the Right of Way (roadway & walkways) area. The remaining areas were considered to be Till Grass (Lawn). The reasoning behind
this is that the lot areas will be hydroseeded during the periods in which these temporary erosion control ponds are in use. The homes and their associated impervious areas will not
be in place during this phase of construction and it therefore seems unnecessary to oversize these temporary ponds for increased peak flows they will not encounter. The detention vault
will be implemented as the permanent form of flow control prior to home construction.
Let me know if this answers your questions or if you require any additional information.
Thank you,
Rob Gonia, EIT|Design Engineer
Barghausen Consulting Engineers
Office: (425) 251-6222 | Fax: (425) 251-8782
From: Barry Talkington
Sent: Monday, May 01, 2017 11:18 AM
To: Ann Fowler
Cc: Barbara Yarington (Barbara.Yarington@mainvuehomes.com); Tom Barghausen; Rob Gonia
Subject: RE: Tiffany Park Early Clear and Grade 16055
Thanks Ann. Rob will get you that info ASAP.
Barry
From: Ann Fowler [mailto:AFowler@Rentonwa.gov]
Sent: Monday, May 01, 2017 11:18 AM
To: Barry Talkington
Cc: Barbara Yarington (Barbara.Yarington@mainvuehomes.com); Tom Barghausen; Rob Gonia
Subject: RE: Tiffany Park Early Clear and Grade 16055
Barry –
Mona and I are reviewing the revised plans now. Once the plans are approved, the final permit fees will need to be paid, the performance bond/surety posted and a pre-construction meeting
will need to be held.
I do have a question on the sediment pond sizing. The manual requires the developed condition 2-year peak flow using 15-minute time steps (at a minimum). The input criteria for the pervious/imperviou
s areas does not appear to match the proposed developed conditions. Can you clarify the area breakdown used?
~Thanks
Ann Fowler
Civil Engineer II | CED
AFowler@Rentonwa.gov | Phone: (425) 430-7382
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From: Barry Talkington [mailto:btalkington@barghausen.com]
Sent: Monday, May 01, 2017 9:39 AM
To: Ann Fowler <AFowler@Rentonwa.gov>
Cc: Barbara Yarington (Barbara.Yarington@mainvuehomes.com) <Barbara.Yarington@mainvuehomes.com>; Tom Barghausen <tbarghausen@barghausen.com>; Rob Gonia <RGonia@barghausen.com>
Subject: Tiffany Park Early Clear and Grade 16055
Good Morning Ann! As you are aware we sent you our Early Clear and Grade plans on 4/26 with the few minor corrections you requested. We are anxious to get our contractor out there
to start clearing. The rodent abatement program has been completed (see attached). What are the next steps so we can get a precon set up and move forward? Thanks.
Barry
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Barry Talkington, P.E.
Senior Project Engineer
Barghausen Consulting Engineers, Inc.
18215 72nd Avenue South
Kent, WA 98032
(425) 251-6222 - Phone
(425) 251-8782 - Fax
http://www.barghausen.com <http://www.barghausen.com/>
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