08-29-16-R - Laserfiche WebLink

Home Browse Search

Page 1 of 2 DATE: August 29, 2016 TO: Honorable Mayor and City Councilmembers Susan Iverson, Interim City Administrator FROM: John Anderson, Acting Public Works Director SUBJECT: 2015 PMP – Venus Avenue Drainage Requested Action Accept proposal from C.W. Houle inc. in the amount of $8,000 for addition of one catch basin at 1776 Venus Avenue and accept proposal from Quibzon Outdoor in the amount of $1,475 to grade an overflow swale. Background The 2015 PMP project was constructed in in the Venus Crystal neighborhood in 2015. The roadway was modified to add concrete curb and the storm sewer system retro fitted to match the concrete curbing. The design of the roadway called for the road to be lowered slightly at the low point in front of 1776 Venus Avenue. As part of the design the crown in the road was also eliminated to provide a better fit to the existing driveways in the area which are flat on one side of the street and steep on the other. As an additional storm water treatment BMP a sump catch basin with a filter designed to trap sediment was installed in this location and two other locations. Discussion Staff was contacted by the resident at 1776 Venus Avenue with concerns over the storm sewer capacity and street drainage backing up onto their property as far back as the garage and house. We investigated the storm system and found there was debris clogging the screen that was limiting the flow of storm water through the screen. Attachment A shows pictures of two of these screens clogged with tree debris. Public Works has removed these screens based on this result. In rain events since the screen was removed the storm water backup onto the lot has been less but still does, in heavy rains, encroach on to the driveway. NEW BUSINESS ITEM – 8A MEMORANDUM