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», <br />1; ‘ <br />West Shore Lafayette Bay Association <br />2440 Old Beach Road <br />Difedglng #3Pg 4 <br />PLANNING COMMISSION - January 16, 1978 <br />Dave Diederlch, Ron Novak, the contractor, and Dr. Wood, of the Freshwater <br />Biologinl Institute, were present representing the association. <br />Mr. Diederlch presented to the Commission members two letters outlining <br />briefly the specifications and procedures of the projected spoils disposal <br />project. <br />4 <br />Mr. Novak's letter dated December 28, 1977 explained procedures as follows: <br />December 28, 1977 <br />Dear Mr. Sween: <br />As per your request, I am submitting the following^ <br />explanation of how we propose to dispose the material <br />dredred from your channel and the effects it would <br />have on the disposal site. <br />As you know, Mr, r>ween, it is essential that we con­ <br />tain the dredged slurry for a period of time to allow <br />the dredged mat^'rial to settle out of the water. Ade­ <br />quate guidelines have been established by the Minn­ <br />esota Pollution Control Agency to Insure water quality <br />standards are met before returning the water back to <br />the lake. Accordingly, we have designed the spoil area <br />with a capacity to exceed the 7 day retention time <br />required by the M.P.C.A. <br />The spoil area as outlined on the attached topography <br />map will have a cross-sectional area of 176442 square <br />feet. By constructing a dike along sides 4 through 9 <br />to the 942 foot elevation, the average depth of the <br />spoil area would be 7.17 feet with a holding capacity <br />of 46,9CO cubic yards. The ground contour at the 942 <br />foot elevation will act as a natural dike along sides <br />1 through 5. <br />*-1