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<br />IiEI:7J OCT :5 0 1916
<br />
<br />~lr. Kenneth R. Wri ght
<br />October 29, 1976
<br />Page 2
<br />
<br />L. Scott Tucker. bC'cullvc Director
<br />
<br />3) Reach R-3, Garrison Street to Confluence with Leyden Creek:
<br />
<br />Lined channel through restricted reaches, bridge and
<br />culvert improvements, and long-term right-of-way acquisition
<br />to accomplish improvements.
<br />
<br />October 29, 1976
<br />
<br />+
<br />Reach R-4, Confluence with Leyden Creek to gOO' - west of
<br />Ward Road:
<br />
<br />4)
<br />
<br />~~r. Kenneth R. Wright
<br />Wright-McLaughlin Engineers
<br />2420 Alcott Street
<br />Denver, Colorado 80211
<br />
<br />Grass lined channel, 100-year design, bridge replacement
<br />at Simms Street and Ward Road.
<br />
<br />5) Reach L-l, Confluence with Ralston Creek to 1200' ! north of
<br />nnd Avenue:
<br />
<br />Dear Mr. Wright:
<br />
<br />The District has received approval from the City of Arvada
<br />and Jefferson County to proceed into Phase B of the Master Plan
<br />for Ralston and Leyden Creeks. The District's Board of Directors
<br />has also given its approval to proceed into Phase B. You are to
<br />proceed with Phase B of the study with the specific direction for
<br />the reaches as listed below:
<br />
<br />1) Reach R-l, Clear Creek to Pierce Street:
<br />
<br />A grass lined channel-design frequency of 100-year.
<br />Replace crossing at 56th Avenue, Railroad, Lamar Street,
<br />and Nolan Street.
<br />
<br />2) Reach R-2, Pierce Street to Garrison Street:
<br />
<br />From Pierce Street to Wadsworth By-Pass - status quo
<br />as there is an existing grass lined channel. However,
<br />investigate flood proofing for 1 or 2 apartments. From
<br />Wadsworth By-Pass to old Wadsworth - replace culvert at
<br />Wadsworth By-Pass; compare two possibilities for the
<br />channel: a) purchase of homes remaining in the revised
<br />100-year floodway or flood plain; or!:.) grass lined channel.
<br />From old Wadsworth to Yukon Street - replace culvert at
<br />old Wadsworth, grass lined channel or flood plain acqui-
<br />sition, building removal, and future regrading of area.
<br />Froln Yukon Street to Carr Street - status quo through
<br />park area; investigate the need to replace the culvert
<br />at Carr Street. From Carr Street to Garrision Street -
<br />status quo through the existing park area.
<br />
<br />Grass lined channel, 100-year design, and bridge improve-
<br />ment at Simms Street, Suoaest some improvements to the 72nd
<br />Avenue crossing to increase its capacity or to protect it
<br />during a 100-year flood.
<br />
<br />6) Reaches R-5, L-2, and L-3:
<br />
<br />The remaining reaches for bot!; Creeks are to be the
<br />non-structural strategy.
<br />
<br />Provisions should be made to incorporate the Blunn Reservoir design
<br />into this master plan. The flow below Van Bibber Creek should be adjusted
<br />to allow for the proposed detention dam. Please advise what items you
<br />need to accomplish these two items.
<br />
<br />If you have no questions, consider this letter the notice-to-proceed
<br />for Phase B. We will look for the completion of the draft report early
<br />in February, 1977. Please prepare a schedul~ for the.Phase B work. .~fter
<br />reviewing the schedule, I.will arrange meetlngs to dlSCUSS the de~alls
<br />and progress of the study with your staff. If you have any questlons,
<br />please call.
<br />
<br />Si ncerely,
<br />
<br />""!) , ? "
<br />/ '. '-,:.:. "....
<br />
<br />. 1'_
<br />y' / / -7'---- /~
<br />. J- "..ct.,:' <. ~tf
<br />
<br />Brian S. Kolstad, P.E.
<br />Project Di rector
<br />
<br />BSK/bac
<br />
<br />cc: Ron Culbertson
<br />Les Wood
<br />
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