1996-07-15_REVISION - M1981302 ‎(3)‎

• Permit No: M1981302
• IBM Index Class Name: Revision
• Doc Date: 7/15/1996
• Doc Name: MEMO FLATIRON PROPERTY-STATUS
• From: BOULDER CNTY TRANSPORATION DEPT
• To: BOARD OF CNTY COMMISSIONERS
• Type & Sequence: AM2
• Media Type: D
• Archive: No

III IIIIIIIIIIIIIIII Pw Oft-e Box 471 •Ba,dw.Colorado
eawa
• • - Transpvl l9uiivi I Department
2045 13tn Street.Boulder.Colorado 8=•Boulder.Colorado 80302•(303)441-39M•FAX[phone]
July 15, 1996
MEMORANDUM
TO: Board of County Commissioners
FROM: Curt Parker, P.E., Water Resources Engineer
Larry M&W. P.E., Dir. of Transportation, Boulder County
Paul Blisk, Assistant Zoning Administrator
Graham Billingsley, Land Use Department Director
SUBJECT: Flatiron Property - Status
Based upon review of out files and discussions with staff members the following is a summary of the status of the
South Boulder Creek floodplain and related issues for the Flatiron Companies gravel mine site(Deepe/rumpike Pits)
located south of the U.S. Highway, 36 and South Boulder Road intersection:
Backeround
In 1979. Flatirons Co. requested permission from Boulder County to cominxt a dike and diversion A—A in the
adopted floodplam of South Boulder Creek. The purpose of the dike and A-3 were stated to be for the protection
of sand and gravel mining operations from inundation by flood waters(the proposal did not request removal of the
property within the protected arcs from the adopted floodplain). It was determined that tender the requirements of
Sections 19.5 and 24 of then current Boulder County Zoning Resolution (adopted November 20, 1979)that such
a structure would be considered'accessory to open uses' requiring the issuance of a Special Permit.The application
for the permit included a floodplain analysis by Leonard Rice Consulting Water Engineers which addressed the
impacts an the floodplain from the proposed dike and diversion channel.
On February 20, 1990, the Planning Commission of Boulder County adopted a resolution which approved the
Special Permit with the following conditions:
1. Any smeadmeat to the County Zoning Resolution should not be considered until the new Corps
of Engineers flood study for South Boulder Creek is available;
2. If the an protected by the dike is to be considered for removal from the floodplain in the future,
the applicant would be responsible for modifying the proposed or constructed dike to meet the
requirements following the Corps of Engineers study;
3. That all of the area disturbed be mvegetated with native grasses of the area.
In 1981, Flatirons Co. applied for a Special Use Review for open mining of sand and gravel on the property (#SU-
Jana L Mender Ronald K.Slewert Ptnl Dantrn
County Carrnmoner Canty Cammmwner Canty Cartmsswner
WMI
EXHIBIT NO.14