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Response to Comments-Cify Engineer's Revtew/Submittal of Revised Plans June 19,2006 <br /> Crystal Bay Business Center-Orono,Minnesota Page 2 of 4 � � <br /> ■ Sc��aitc��y sewer service nnrst be extende�i alo�ag tlze proposed public street. A stub should be provided <br /> at tlie east pr•operty li�ae to allow for fictz�re service. <br /> The sanitary sewer has been extended along the proposed public street from west to east. The <br /> previously designed manholes have been adjusted to allow for the stub at the east end of the proposed <br /> public street to be designed at 8-feet below grade. The connection elevation at the existing manhole <br /> was also revised as a result of this. <br /> ■ T/ie Right-of-W�ry of the proposed public street should be 70'wide. <br /> Ryan Companies is requesting a variance for the 50-foot right-of-way shown on the plans. <br /> ■ TIZe pla�as should clarify wher�e tlte roof drains on the west side of the existing building will be <br /> discharge�l <br /> Sheets 7.0 and 8.0 show the location of existing roof drains;the existing roof drains discharge at <br /> grade. <br /> ■ The proposed i�avert elevations for STMH-230, CBMH-220, CBMH-210 a�ad FES-Z00 do�aot <br /> . corresponc�to the proposed pipe grades and sliould be corrected. <br /> The invert elevations have been adjusted and they now correspond to the correct pipe grades and <br /> lengths. � <br /> ■ Emergency overflow points should be clearly defined anc�labeled. Over•land e�nergency overflow <br /> points should be a minimam�of one foot lower than the critical building's Zowest opening. The <br /> current plans do raot provide this�ninimum freeboard a�r.cl slzould be revised. <br /> Emergency overflow points have been added to the plan. A 1-foot freeboard has been provided from <br /> building openings. <br /> ■ Storrn sewer is proposecl to discharge into the�Zitcla alo�zg Highwc�y 12, ultimately flowing to the <br /> MnDOT po�rd to the east of the project locatiota. The t�ppliccznt sliottld provide documen.tation from <br /> MnDOT stc�ti�7g that the po�1d is sized to handle proposed raazoff fr•ona the site. . <br /> Ryan Companies is working with MnDOT to obtain approval of the proposed storm sewer. <br /> ■ The p�•oposec�inaproveme�ats will distuf•b more than o�ze acre, this will require a�e��n2it fi•om the <br /> MPCA. Fi�aal plans shottld i�aclttde a detailed Stor�n Water pollzttion Preventio�z Pla�a(SWPPP)for <br /> review and approval. <br /> A stormwater pollution prevention�lan will be included in the final plans. <br />