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MINUTES PLANNING COT.QMISSION MAY 3, 1982 PAGE 3 • Robert J. Schunicht, City Engineers Office stated that in lookin ~ g ROB ERT J. at the site, two things should be considered. First is the existing SCHUNICHT, condition where we have no overflow from the site, no gravity or storm CITY ENGINEER water overflow for the northwestern part of Falcon Heights. Seepage OFFICE down into the ground water table will have to relied uoon to provide an overflow or outlet for the storm water that is generated in this development and the .Falcon Woods development. Systems will have to be designed to work for future conditions when and if there is a gravity or pump outlet for storm water provided .for this site where the water will flow into St. Paul and the P~.ississippi River. He then refers to information presented in a draft letter dated ~.qay 3, 1982 to the City Council and Planning Commission. Don Mead asks whether they are recommending underground pipe and Mr. Schunicht answers in the affirmative and states that there should be a catch basin in each of the four cul-de-sacs along the eastern property lines, storm sewer connecting them running into the pond, which would also pick up the major portion of the drainage coming from Falcon Woods down the lot lines. John Labalestra asks whether there would have to be storm sewer for the rest of the development no matter what is developed, could the second development be independent of the first and would the storm sewer totally eliminate the potential of overflow onto Tatum as it now exists and Mr. Schunicht answers in the affirmative. Council Liaison Larson informed the Planning Commission that the City ST. ANTHONY is currently investigating connection to the St. Anthony Storm Sewer coming off the develo ment icki ll th STORM SEWER p p ng up a e way to Fairview and CONNECTION connecting into the University storm sewer system. Mr. Schunicht advised that the northwestern part of the City would be broken off (north of. Larpenteur and west of Fairview) and drained into the University system, which would leave the rest of the City the way it is. The reason for this is because it has to be discharged at a slower rate and delayed until the University water is drained through the system and capacity is available. The ponds are located in this area wYiich would allow this system to work. Bourquin asks if the additional ponding requested by Hewlett-Packard had been considered and Mr. Schunicht answered that the pond is located on private property and would prefer to keen them .separate. If the project to connect into the St. Anthony Storm Sewer is approved at some time, that would be the time to coordinate all the ponding areas. John Labalestra asked Mr. Schunicht for clarification in two areas: (1) was there not enough capacity in 197) to take care of the whole area, and (2) servicing the whole area--tivhat is being serviced and what is not with the proposed connection, is it just the new development or is it Lindig, Tatum, etc. Mr. Schunicht answered that the area is north of Larpenteur and west of Fairview. The ponds in this area holds the water back f or a hour or two and then flows dovrn to the University system. Mr. Bourquin asks whether the 52 foot radius for the cul-de-sac was JIM BOURG;UIN adequate for turning fire equipment and Mr. Schunicht answered that . it was adequate.