WS 07-13-2010 - Laserfiche WebLink

Home Browse Search

Page 2 Feasibility Report 02-06 (2007) May 17, 2007 The following alternatives to improve the pond were discussed: 1. Bring more water into the pond and raise the normal water elevation. Bicentennial pond has a very small tributary drainage area that does not sustain the pond very well. Additional storm water could be diverted into the pond from the 3`d Street NW storm sewer which conveys storm water from the Wexford Heights area to County Ditch #2 in Hansen Park. Also the existing outlet pipe could be raised to retain more water in the pond. With 3rd Street NW being reconstructed in 2002, the timing for the construction of a diversion pipe is ideal and bringing more water into Bicentennial pond would be environmentally beneficial. The residents were in favor of bringing more water into the pond from the Yd Street NW storm sewer and raising the normal elevation by 6 inches. We are proposing to include this work in the 2002 Street Rehabilitation project as storm sewer system improvements. The cost for these improvements would be paid from the Storm Water Utility Fund. 2. Additional dredging was discussed and deemed not feasible based on the high cost and limited success of the first dredging project. It was also discussed that the residents may be able to move some of the floating clumps to the island if the pond elevation is raised. The clumps could possibly be anchored in place over the island until they root in permanently. The residents will have to experiment and see if they can devise a method of moving the floating clumps. 3. Hire a pond maintenance company to rid the pond of submerged weeds, algae, duckweed, and some of the cattails. If the cattail growth on the floating clumps were killed the clumps might fall apart and sink to produce more open water area. The residents express support for creating a storm sewer improvement taxing district to pay for a pond maintenance project. The storm sewer improvement taxing district would consist of the 14 properties that abut Bicentennial Pond. The pond maintenance project would be for an initial 5 year period. Alternatives 1 and 3 were both implemented and completed in 2002 with the possibility of Alternative 3 to be repeated in five years. The remainder of this report addresses Alternative 3 above, the setting up of a five year pond maintenance project. PROPOSED POND MAINTENANCE PROJECT Quotations were initially obtained from three pond maintenance companies back in 2002. The lowest of the three was chosen, and their services will again be utilized in the pond maintenance project for 2007. The quotation is for annual maintenance for a five year period for 2007 through 2011. This quotation is for full season maintenance for five years and will include treatment for submerged weeds, duck week, algae and the cattail growth which is encroaching into the open water area. This company carries liability, property damage, and workers compensation insurance. The quotation is firm for the five year period, and is based on one annual payment. The quotation from Midwest Aqua Care, Inc. appears to include the full range of services required to meet your pond's needs. This quote is competitive and less than the quotes of the Ira