CC 10-28-1991 - Laserfiche WebLink

Home Browse Search

. , Minutes of the Arden Hills Regular Council Meeting, 10-28-91 Page 2 . HRING (Cont'd) Engineer Graham advised the proposed improvement project was initiated by the City, in response to ClOII'plaints from property owners regarding starxling water in the rear yards at 1553 Arden Place and 1305 Ridgewood Road. Graham identified a parcel of lanj which apparently served as a drainage collection area, prior to construction of a new harne. He advised there is an existing storm sewer pipe, located on the north side of Arden Place, which crosses to the south side of Arden Place, and which was apparently installed with the intent to drain this area. He explained that after discussion with the residents of the area, it appears the existing pipe is inadequate and has not drained the water in this area for a number of years; indicated the pipe may be clogged, crushed or obstructed by tree roots. Graham advised he met with several residents in the area to discuss the drainage issues. He reviewed the feasibility report which outlines replacement of the existing storm sewer pipe with a new pipe, 12 inches in diameter, generally following the same aligrunent as the existing pipe. He stated a new catch basin would also be installed as part of the improvement project. will Woods, 3470 siems Court, questioned the design of the storm sewer and plans for capturing the sedimentation from the run-off and the ilnpact of channeling the run-off to inlet on Iilke Johanna. Engineer Graham advised several residents questioned the ilnpact of directly channeling the run-off into Lake Johanna. He explained that he contacted the Rice creek Watershed District and reviewed a report titled, "Field Evaluation of . Benefitted Use of Phosphorus Fertilizer on Residential storm Water Quality". Graham stated the report concludes the fertilizer contained in run-off water from lawns has a much less significant ilnpact on lake quality than run-off water from streets. He was advised by RCWD that the run-off ilnpact is insignificant. Graham reviewed the methods utilized to design the pipe and "beehive" catch basin, which allows the run-off to trickle into the basin and also allows the particles/sedi1nent to settle before entering the catch basin. Mr. Wood expressed concem that the design does not appear to be adequate to handle the sedimentation and questioned why the flow was not directed to the wetland area :immediately to the east of the properties. Engineer Graham advised the design was based on the existing pipe installation and the most direct route to Lake Johanna and the run-off eventually enters the lake through the wetland area identified by Mr. Wood. Donald Obarrius, 1619 Lake Johanna Boulevard, objected to directing the storm water run-off into Iilke Johanna. He stated the overflow from all areas around the lake eventually drain onto his property and he does not wish to have the amount of run-off in=eased. Mr. Wood questioned if alternative designs were reviewed. Engineer Graham explained the design of the storm sewer was based on a response to residential complaints anj the existing pipe location was reviewed; no other . alternatives were examined.