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Ms. Katie Larsen <br />5/4/2022 <br />Page 3 <br />11. (8/7/2019) Provide dead storage calculations. HydroCAD model shows the direct <br />drainage area to the property pond is 0.996 acres requiring Q f+ 039 3$f_dead <br />storage. <br />Report. <br />onset f aln„lafinno for+he All IDD velum n he feURd in the I..ydrning�� <br />Report. <br />12 (81712019) nrdinanne 3(b) states the HS-C3 of areas vVithin n nstr„c+inn limits is to <br />be shifted dGWR o classifica+inn to a ,n+ for the im ants of grading o nil <br />structure uR;assthe project speei#+sat'GI~T rate ^nil amendments ip <br />accordance with Dine Creek Watershed rlis+rig+ Coil Amendment guidelines. <br />Revise proposed model to meet this requirement. <br />Response: Coil amendments have been added to the plans OR sheet G3 1 <br />(81712019) Pecnmmend ^hanging the p sed Hydrn(`Arl modal labels to <br />"Preppo Nerth" �onpo d f " istiRg North" $tiRg East" s sed�r�rrP�- sed East , irasteaa--Or—€Xc �"�9 ,�r�rr�€�c� —a <br />these drainage areas have ^hanged in the n ed model <br />Response: The labels on the proposed model have been changed to "Proposed" <br />fer the alceas with proposed changes <br />13. (8/712019) D^^^"""opd ipdinatipg Iona+ion of all nodes from HydroCAD model OR <br />Passed and Ex'Sti Rg Dra'RageAreaFigures (i.e:—perdiRg areas "ID", "W " "P2" <br />3 <br />�a <br />and "P" <br />t., -ram— <br />Response: The pond nodes have been added to the drainage m <br />14. (8/7=19) Existing West s„hcatchmen+'n HydroCAD model does not show <br />discharge location in existingnn o poposed models include a reach o route for <br />this s„bca+chment <br />Res{3orpGe; A r ash has been added for the Existing West subcatchmep+ <br />15. (5/4/2022) Applicant to extend rip rap from Rain Guardian outlets down to NWL <br />of the north pond. <br />16. (5/4/2022) Applicant to update Rain Guardian rim and invert elevations as shown <br />on sheet C4-1. <br />17. (5/4/2022) Engineering staff does not have any comments on the proposed retaining <br />walls at this time. We recommend that the building inspector review the proposed <br />walls with the building permit review. <br />18. (5/4/2022) The proposed grading on the north side of the new parking lot cuts off <br />the existing 910 contour. Applicant to update where the proposed contour ties in <br />to the existing contour. <br />19. (5/4/2022) Applicant to verify where the proposed 912 contour ties in to the <br />existing 912 contour on the south side of the proposed parking lot. It currently <br />looks like it doubles -back on itself. <br />• Water Supply <br />There is currently an existing 16-inch diameter ductile iron pipe (DIP) water main along <br />Otter Lake Road. The applicant is proposing to construct a 6" DIP water service for the <br />building and connect into the existing 16-inch DIP via a wet tap. <br />Comments: <br />1. (817/2019) A Minnesota Department of Health permit is required. <br />Response: The well will not be capped and will be maintained for irrigation. <br />(5/4/2022) Minnesota Department of Health plan review is required as over 100 ft <br />of watermain is being installed. <br />Otter Lake Animal Care Center Engineering Review <br />