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4 <br /> hpr l�` GUU4 19�1 C� 1iUl'Itb 11'tUU KUbtl`IC t'll'ILtKLllt b�10,701.311 �. C <br /> �t • � �� � . <br /> f ' ' • <br /> 5 X �,,,�.-� <br /> - M � . . � � ._..,�...� <br /> em o ;�����Q=t� <br /> { ?�'Y:> <br /> ��gRblen�- <br /> . • � � =qAfid'e�1�t� <br /> V YJra�'� <br /> �l..t.{�J:�,�`+:SO�}',� <br /> � EnplRae�z.i�A�'S�If� <br /> Project.Name: WJM Properties Client: City of Orono <br /> � <br /> To: Tom Kepogg File No: 139-06-000 ' <br /> From: �ance Hoff � . Date:. 4-11-06 ; . <br /> Re: Drainage Review ' � • <br /> �. � . � � <br /> .�, . � � . <br /> - Engineer: Gronberg &Assoc., Long Lake <br /> x � � . <br /> ; Submittal:• Storm Sewer Design Calculations &Associated Drainage Boundary Maps .� <br /> � Date Received: 4-11-06 � � <br /> i � � . � , <br /> Summarv of Recommendations . � � <br /> - . K . <br /> Based o`n our review of the WJM Properties storm sewer design, we offer the following comments. <br /> ; ' � � . . . . <br /> 1�. The existing storm sewer.design was reviewed and found to not meet the City requirements. <br /> � <br /> : City standards require storm•sewer designed to convey runoff generated during a 5-yr storm. A <br /> �� 5-yr storm generaNy corresponds to 3.6 inches of rainfall. The existing storm.sewer was fo�nd <br /> '� to convey runoff generated from approximately 0.7 inches of rainfall (<1-yr storm or 2.4 inch�s). <br /> . � ' <br /> � Per a conversation with the owner's engineer, the owner is aware that the storm sewer system <br /> < . <br /> , does not meet City standards. Overland runoff generated during a 5-yr storm will affect only the <br /> � owner's'property, ultimately running south to the adjacent ditch and east to the Kenobi Pond. <br /> ; �Since adjacent property ownErs are not affected and the City is not responsibfe for the stdrm <br /> �i sewer maintenance, no revisions are necessary. . � <br /> ; . <br /> ; � . ' . <br /> � . ' . <br /> i . ' . • <br /> P� � � • • � <br /> ' , • <br /> � � ' . , <br /> � <br /> . i <br /> �. . • • • <br /> � • , . <br /> ! � • � <br /> t � � . <br /> t <br /> Bonestroo, Rosene,Anderlik and Associates,Inc. • <br /> � www.bonesfroo.com <br /> 0 SL Paul Of1lca: ❑Mllwaukao OHlca: 0 Rochesler Offlce: <br /> 2335 Wesl Hlglnyay 36"' 12015 N.Co ❑Wlllmer 6H(c�; ❑SL Cloud OHlca: <br /> SL PaW,MN 5511J �ale Perkway,Sle 200 11Z 7�Street NE 0 Ll6ertyylllo Offica: <br /> Mequon,y�ry 63092 205 51h Slreal SW 372123�+Strea15 1860 Wast Wlnchesler Rd,Sle 106 <br /> Phane_651•fi3G460Q.. Phona:262-643�9032 Rachesler,MN5590B HlIllmar,MNSgyp� SLCfoud,MN58�01 <br /> - • Phone:f�7.9A9.71n� o�,,,_,,.,,,,�.:,,... -• -----• • Groyslake,IL60030 • <br /> r <br /> u <br />