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. Bonestroo 2335 West Highway 3G ■ St. Paul, MN 55113 EXHIBIT F <br /> Rosene Office: G51-G3G-4G00 • Fax:G51-G3G-1311 <br /> Anderlilc& www.bonestroo.com <br /> • Associ�tes <br /> Engineers&Architects <br /> April 29, 2005 ��'�;`�°°.:,;;; <br /> ,,.. <br /> Ms. Janice Gundlach �AY (,, .,�� � <br /> Plan.ner -��J <br /> City of Orono �'����' Q�o� <br /> Post Office Box 66 � <br /> Crystal Bay,MN 55323 <br /> Re: 1745 Fox Sh•eet <br /> File No. 000139-05000-0 <br /> Plat No. OS-3097 <br /> Dear Janice: <br /> We have reviewed the site plans dated 4-7-OS for the proposed improvements to 1745 Fox Street. The plans <br /> propose to subdivide an existing single family lot into a six lot single fami.ly subdivision. The exisi:ing lot is <br /> 57.91 acres of which 21.11 acres are dry. We have the following comments with regards to engineering <br /> matters: <br /> • The drainage calculations provided only address an area(8 acres)that is to be routed to the proposed <br /> pond. Tlie city requires that storm water rate control be met for the entire site. In other words,post <br /> development flows for the entire site must not exceed predevelopment flows. Drainage calculations <br /> should be revised to cover the entire site. It may be necessary to incorporate some best rnanagement <br /> practices in addition to the pond to meet the rate conh•ol required. <br /> • The proposed pond needs to meet NLJRP standards. <br /> • Because the improvements will disturb niore than one acre the fmal plans should include a detailed <br /> temporaty and permanent erosion and sediment control plan as required for the NPDES permit. <br /> • The proposed retaining walls exceed 4-feet in height in some areas.A separate engineered design and <br /> detail subinittal is required for all walls that are greater than 4-feet in height. <br /> • The limits of the proposed grading for the retaining walls approaches some septic site locations. It is <br /> likely that the grading shown will impact the proposed septic sites on Lots 3 and 4. We recommend <br /> that the grad'uig plan be revised or alternative septic sites be shown to eluninate any potential conflicts. <br /> • The driveway showu across Outlot A to serve Lot 6 should be configured to serve the existing guest <br /> house if this structure is to remain.T11e guest house access onto Fox Street should be removed and the. <br /> ditch regraded. <br /> • We received a separate plan dated 4-14-OS proposing unprovements to Fox Street to eliminate a sight <br /> distance issue. The plaus should be revised to show the existing street grades and include existing <br /> verlical curve infonnation so we can fiirther a�ialyze the necessity of any improvements to Fox Street. <br /> If you have any questions please call me at(651) 604-4863. <br /> Yours veiy truly, <br /> BONESTROO,ROS�NE,ANDERLIK&ASSOCIATCS, INC. <br /> ✓ <br /> �dJ'✓1 <br /> Tum ICellogg <br /> Cc: Greg Gappa, City of Orono <br /> St. Paul, St. Cloud, Rochester, MN • Milwaul<ee, WI • �hicago, IL <br /> Affirmative Action/Equal Opportunity Employer and Employee Owned <br />