My WebLink
|
Help
|
About
|
Sign Out
Home
Browse
Search
CCP 02-10-1992
ArdenHills
>
Administration
>
City Council
>
City Council Packets
>
1990-1999
>
1992
>
CCP 02-10-1992
Metadata
Thumbnails
Annotations
Entry Properties
Last modified
5/8/2007 1:08:46 PM
Creation date
11/3/2006 3:53:29 PM
Metadata
Fields
Template:
General (2)
There are no annotations on this page.
Document management portal powered by Laserfiche WebLink 9 © 1998-2015
Laserfiche.
All rights reserved.
/
164
PDF
Print
Pages to print
Enter page numbers and/or page ranges separated by commas. For example, 1,3,5-12.
After downloading, print the document using a PDF reader (e.g. Adobe Reader).
View images
View plain text
<br />I <br />.. If ponding is required in the wetland preservation area, the top of the <br />I baffled weir can be raised to an elevation of 972.0. This elevation will <br /> still keep the high water level of the pond at elevation 972.8 because 22 <br />I cfs will go over the top of the weir in 100 year 24 hour storm. The water in <br /> the pond will raise to an elevation of 971.3 before being treated by the <br />I weir which will pond water app~oximately 1.8 feet deep. <br />I The 24" RCP pipe will convey the stormwater runoff through approximately 450 <br />I feet of pipe from the wetland preservation area to the low area north of Arden <br /> View Drive. The 24" RCP pipe will be centered within permanent and temporary <br />I construction easements. The City of Arden Hills is currently in the process of <br />I acquiring the permanent and temporary construction easements around pond A-7a <br /> and to install the storm sewer from the wetland preservation are to pond A-7a. <br />.. Refer to page 5 at the end of this report, for a description and a drawing of <br /> the proposed permanent and temporary easements. This low area has been <br />I designated by the North Central Drainage Report as the ponding area for the <br />I entire 16.67 acre drainage area, labeled A-7. <br />I Under current conditions the water level of pond A-7a is at elevation 945.3 with <br /> an overflow to the west at elevation 945.3 and a peak discharge from the North <br />I Central Drainage Report of 4.8 cfs. The pond east of pond A-7a flows to a low <br />I area that does not have an overflow to pond A-7a. Therefore, the flow that <br /> reaches pond A-7a is the area around pond A-7a and the flow being conveyed by <br />I the 24" RC pipe. This amount of runoff, with a discharge out of pond A-7a <br /> through the existing channel of 4.8 cfs, requires a storage volume of 1.35 acre <br />~. feet for the 100 year 24 hour storm. The pond will rise to elevation 946.50, <br /> which is approximately 1 foot higher than the present pond level. A maximum <br />I <br />I <br /> __ ___u____n_______ <br />
The URL can be used to link to this page
Your browser does not support the video tag.