DFHADprototype071409.. - Urban Drainage and Flood Control District
DFHADprototype071409.. - Urban Drainage and Flood Control District
DFHADprototype071409.. - Urban Drainage and Flood Control District
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DFHAD Prototype<br />
720 S. Colorado Boulevard, Suite 410 S<br />
Denver, Colorado 80246<br />
phone (303) 757-3655<br />
fax (303) 300-1635<br />
PROGRESS MEETING FOR<br />
HOFFMAN DRAINAGEWAY PLANNING & FHAD STUDY<br />
MEETING MINUTES<br />
Date: November 14, 2006<br />
Location: <strong>Urban</strong> <strong>Drainage</strong> <strong>and</strong> <strong>Flood</strong> <strong>Control</strong> <strong>District</strong> Confrence Room<br />
Distributions: Alternative 1 Plan (Hoffman <strong>and</strong> McElwain Detention),<br />
Alternative 2 Plan (Hoffman Dentention),<br />
Alternative 3 Plan (100-year Conveyance, Open Channel),<br />
Alternative 4 Plan (100-year Conveyance, Conduits),<br />
Alternative 5 Plan (Non-Structural Methods),<br />
Watershed Overview, <strong>and</strong> Estimate of Probable Cost<br />
Attendees:<br />
Name Organization Email<br />
Ben Urbonas UDFCD burbonas@udfcd.org<br />
Ken MacKenzie UDFCD kam@udfcd.org<br />
Pete Brezall City of Thornton pete.brezall@cityofthornton.net<br />
Besharah Najjar Adams County bnajjar@co.adams.co.us<br />
Jessica Stevens Adams County Jstevens@co.adams.co.us<br />
Teresa Patterson Moser & Associates patterson@moser-eng.com<br />
David Delagarza Moser & Associates delagarza@moser-eng.com<br />
I. Purpose<br />
The purpose of the meeting was to present an update of the project progress. The meeting<br />
included discussions about the preliminary 100-year floodplain delineation <strong>and</strong> preliminary<br />
alternatives.<br />
IV.<br />
It was requested that the open channel alternative along Hoffman Way north of 88 th Avenue<br />
be reinvestigated for other configurations besides the deep channel with vertical sides.<br />
Moser will also add an option for a concrete-lined channel east of Welby Road along 86 th<br />
Avenue.<br />
Schedule<br />
The schedule will be extended to accommodate acquiring the additional survey for the<br />
FHAD. Once Moser obtains the survey results, the next progress meeting will be scheduled.<br />
II.<br />
III.<br />
FHAD<br />
David discussed the preliminary FHAD for the basin. While some structures were removed<br />
from the floodplain, a significant number of structures were added to the floodplain or are<br />
adjacent to the floodplain boundary. Ben requested that all structures that are near the<br />
floodplain boundary be surveyed to determine their first floor elevation. This survey will also<br />
include enough information to tie in the Jenning’s property as-built survey into the study<br />
mapping.<br />
Alternatives Assessment<br />
Teresa discussed the various alternatives <strong>and</strong> the associated cost estimates. The<br />
alternatives presented include options for incorporating detention along the mainstem of<br />
Hoffman <strong>Drainage</strong>way <strong>and</strong> also downstream of the McElwain neighborhood. Other<br />
alternatives consider conveyance infrastructure with various configurations of open channels<br />
<strong>and</strong> conduits. The fifth alternative considers non-structural methods that may include<br />
purchasing residential homes in the floodplain.<br />
Hoffman <strong>Drainage</strong>way Planning & FHAD<br />
Progress Meeting Minutes 11/14/06<br />
Page 1 of 2<br />
Hoffman <strong>Drainage</strong>way Planning & FHAD<br />
Progress Meeting Minutes 11/14/06<br />
Page 2 of 2
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