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Y <br /> . Response to Comments-City Engineer's Review/Submittal of Revised Plans June 19,2006 <br /> Crystal Bay Business Center-Orono,Minnesota Page 2 of 4 <br /> ■ Sanitary sewer service matst be extended along tlze proposed public street. A sta�b should be provided <br /> at the east property line to allow for fictticre 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/ze Right-of-Way of the proposed pzrblic street should be 70'wide. <br /> Ryan Companies is requesting a variance for the 50-foot right-of-way shown on the plans. <br /> ■ T7i.e plans should clarify whe�•e the roof drains on the.west side of tl:e existin,�btcilding will be <br /> c�ischarged. <br /> Sheets 7.0 and 8.0 show the location of existing roof drains; the existing roof dr`ains discharge at <br /> grade. <br /> ■ The proposed invert elevatio�is for STMH-230, CBMH-220, CBMH-210 afad FES 200 do not <br /> corr•espond to the proposed pipe grades ancl s7:ould 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 shoulcl be clearly defined and labeled. Overland erner•gency overflow <br /> points should be a minimznn of one foot lower than the critical building's lowest opening. The <br /> cz�rrent plans do not provide this minimum freeboard and shozsld 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 proposed to discliarge into the ditch along Highway 12, ultirr:ately flowing to tlie <br /> M�iDOT pond to tlre east of tlze project location. The applicant should provide documentation from <br /> MriDOT stating that tlie pon�l is sized to handle proposed r��noff fronz tlae site. <br /> Ryan Companies is working with MnDOT to obtain approval of the proposed storm sewer. <br /> ■ The proposed improveme�tts will dista�rb mor•e tl:ara aae acre, tltis will reya�ire a permit fror�a the <br /> MPGA. Final plans shotitld inehrde cr detc�iled Storm Water pollution Pr•eve�ation Plan (SWPPP)for <br /> review a�atl npproval. <br /> A stormwater pollution prevention plan will be included in the final plans. <br />