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*5'V? <br />> - <br />^',- <br />r I <br />.7 <br />:^r' <br />Mf*.. <br />r=i <br />; ;• ’ <br />?4 <br />Mias <br />it <br />Jl^v* , <br />1*^e-' <br />»i.. ■ <br />Vp,'- <br />;'5 <br />S' <br />y' <br />r^-,V0,i <br />unit;ecl design associates eie-sar-aw <br />July 24, 1992 <br />Hr. Gabriel Jabbour <br />985 Konkawa Road <br />Long Lake, Minnesota 55356 <br />Dear Mr. Jabbour: <br />We are transmitting herewith a copy of the Michigan Department of Natural <br />Resources performance specifications used for floating piers. I personallysn r s * <br />projects. <br />Although this particular specification encloses the polystyrene, which it <br />should, there is consideration being given towards eventually having the <br />enclosed polystryene watertight. There are a number of reasons for this <br />consideration, not the least of which is: <br />1. <br />2. <br />Water absorption and limited life of the flotation units. <br />Exposed polystyrene units are susceptible to many types of animal pene­ <br />tration and provide potential for nests and being subjected to degredatlon <br />by, believe it or not, use as an apparent food source for certain types <br />of animals that live in or near the water. <br />3.Potential fuel degredatlon by contact, even in the water areas, by pene­ <br />tration through deck boards and the like. Fuel spills are supposed <br />to be minimal and will float on the surface so t^^at in most instances <br />contact with the present method of enclosure advocated by the Michigan dnr <br />does keep this to a minimum. <br />4.Enclosures will lessen other types of degredatlon and deterioration <br />which has an effect on the successful life of the flotation units. <br />If you have any questions or need additional information, please advise. <br />Yours truly, <br />UNITED DESIGN ASSOCIATES, INC. <br />James E. Muschell, PE <br />pib <br />nil IWOPTM MAIM - CneBOVOAM, MICMIOAM A87B1