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BONESTROO AND ASSOCIATES <br />Bonestroo <br />Rosene <br />Anderlik & <br />Associates <br />Engineers & Architects <br />January 16, 1907 <br />^ 612 6361311 01/16/97 10:00 0 :02/02 NO:239 <br />nvivn,\ «i./Ati.nMf/*. hu is f./i.f .‘' r. • •♦S*' »* <br />o»»»i i'. i.-i .M.f. n I f « <br />k.^.h•f^1^ Ufts, t ri •(•iffM*' » ..( * »| • rii.'iiT^v t ^ l»h # <br />kviy A • koJiri! r*»r.fiir TT .iiljtit M Sr‘»»ir.» \ r»*.,jii.m# <br />/'rirn H.iw uJA S«5nroul PC • Kt* P'V A ij.-.i lr.ti P'riN i»* • <br />W ►mirr •m.vmIo i.i mh.. if • PuUt-.r c ^ a, a . m .rn a rn.u .»• i»f • <br />T II tfk • hsl ► »iH I «'•!* r‘1 • Vnk V v.vr*. • <br />r U'* r| I V • I* 'r-t ■? ' ►.*!♦,*^\rn <br />r JfYur*. *il R'ji ftr^r* I »A nn*} \| ( «i*»iil VN • \JU E <br />% ♦ <br />Mr. Michael P. Gaffron. <br />A.sst. Building and Zoning Adminislralor <br />City of Orono <br />Post Office Box 66 <br />Ciystal Bay, Minnesota .‘'.i323 <br />Rc: Gcnmar <br />File No. 1.30-2195 <br />H «r#*r ‘ <br />/-/u-n <br />/•*. /• : »‘*r> <br />♦ ^ <br />Dear Mike. <br />Wc have rcvjeweci the grading plans for the proposed NURP ponds for Gcnmar (Minnetonka <br />Boalwurks). The two pond designs submilled are based on expanding the existing parking lot by <br />either three or ten parking stalls. Both poiul designs meet NURP criteria and are accepiuhle from <br />an engineering standpoint .Storm sewer inlet inverts should be set at the NWL (929.40) for both <br />ponds. The inven ot the existing outlet pipe should be extended to 928.0 on the pond side for the <br />three .stall design to provide skimming of fioatables and debris The grading plan should be revised <br />to .show a drainage swale near the pond oiitlei pipe set at the pond HWI, (930 8). The .south end of <br />the parking lot should Ixj rai.scd to an elevation of 9.31 .3 to prevent water from ponding in the parking <br />area. <br />Please contact me at this office it you have any ejuestions regarding this matter. <br />Yours very truly, <br />BONESTROO. ROSENE. ANDhRUK it ASSOCIATES. INC. <br />.Shawn D. Gustafson. P.F.. <br />2J35 West Highway 36 • St. Paul, IVIIM 55113-3898 • 612*636-4600