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ENFORCE30615
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Last modified
8/24/2016 7:42:42 PM
Creation date
11/21/2007 12:42:12 PM
Metadata
Fields
Template:
DRMS Permit Index
Permit No
M1977210
IBM Index Class Name
Enforcement
Doc Date
5/24/1990
Doc Name
CEDAR HEIGHTS PROJECT YOUR CLIENT RTC AS RECEIVER FOR SIOUX VALLEY SAVINGS AND LOAN ASSOCIATION
From
KIOWA ENGINEERING CORP
To
GORSUCH KIRGIS CAMPBELL WALKER AND GROVER
Violation No.
MV1989015
Media Type
D
Archive
No
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<br />access road flattens near the intersection of Cedar Heights <br />Drive. Conversations with the guard house attendant indicated <br />that runoff from basins HR-6 and HR-7 causes erosion damage and <br />sedimentation on a fairly frequent basis. Eventually the <br />sediments carried by the runoff are deposited in the Black Canyon <br />Drainageway via the 5430 inch culvert. <br />Erosion of the natural Swale downstream of the proposed HR-6 <br />r_ulvert has caused sediment to be deposited within the Cedar <br />Heights Drive street section. The runoff and sediments <br />originating within basin HR-6 and the natural Swale are <br />eventually deposited near the existing 24-inch culvert under <br />Cedar Heights Drive approximately 400 feet south of the F~roposed <br />culvert "A" identified in the Obering Wurth report. <br />Sediment mainly consisting of rock chips oaring in size from 1/4- <br />i.nch to 1!Z-inch have been deposited along the quarry access road <br />presumably by the operator of the quarry. This material can be <br />found along the natural Swale downstream of the HR-6 ba~;in and <br />along the east side of the quarry access road. This material can <br />also be found at several locations along Cedar Heights Drive. <br />Runoff from the HR-6 basin will continue to carry this material <br />to downstream areas until such time the material is removed or <br />otherwise stabilized. This material has apparently been used to <br />construct a truck ramp in the vicinity of the outfall point of <br />the HR-6 basin. <br />Review of Alternative Options <br />As a result of the preparation of the Obering Wurth HR-6 Synder <br />Quarry CAP and the subsequent review of this report by the= MLRD, <br />seven alternative drainage plans have been developed. A <br />discussion of each follows. <br />Option 1: This option consists of the construction of a 24-inch <br />culvert under the quarry access road at the outfall point of the <br />HR-6 basin. This culvert has the capacity to convey the 5-year <br />flow under the road and into the natural Swale. The overflow <br />(i.e., the flows exceeding the 5-year discharge), are proposed <br />to be conveyed in a roadside ditch aligned along the west side of <br />the quarry access road and outfall to the existing 54/30-inch <br />culvert. The total flow estimated to reach the 54!30-inch culvert <br />in a 100-year event is 108 cubic feet per second (cfs). This <br />exceeds the culvert capacity and would cause flow t.o overtop the <br />roadway in the vicinity of the guard house. ~ This opticn is in <br />our opinion unacceptable since no provision for stabilization of <br />rOQ~S,,Q,P the natural Swale has been proposed. This concept implies that <br />o{ flow will be diverted from the historic flow path. This option <br />~ ~ 6~would simply shift the existing concer.~s to another location. <br />Q'')~ The roadside Swale proposed for this option would have <br />~ Pa« <br />~0 Cv~v~evl ~,( wk <br />i i <br />2 ~~0~ ~f~y <br />'< <br />
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