Laserfiche WebLink
memo to Driscoll <br />:dovember 28, 1990 <br />Page 2 <br />Generally, the Public Works Department strongly prefers open stream channels <br />to streams encloaed ia culverts. Open channels provide water quality benefita <br />and improved habitat conditions for fiah aad ctildlife. This is eapecially <br />true for Pigeon Creek �/1, where an active program to re-Patabliah a <br />self-supporting Eiahery hae been underway for several years. <br />For this particular site, however, the Public Worke Department would not <br />object to utilizing a culvert syatem. This is based upon the following <br />observations: <br />1• The stream is currently eaclosed in a culvert at thia site. Therefore, <br />the propoaed slte plan would no[ decrease the length of Pigeon Creek 4x <br />in an open channel condition. <br />?• The length of stream, approzimately 150 feet, that could be changed to <br />an open channel condltion is very small compared to the length of <br />stream upatream of this site that ia culverted, approsimately 3700 feet. <br />3. The upatream 3700 feet of culvert ia under paring lots and city <br />streeta, and is adjacent to steep alopea. Thia makee tt highly <br />unlikely that aay of the upstream portions of Pigeon Creek N1 can be <br />converted to an opea channel conditioa. <br />'� LEQ is the level of a steady sound that hae the aeme sound energy ae aa <br />amplitude - varying sound of the same duration. <br />349k <br />