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� <br />2 <br />4 <br />5 <br />6 <br />7 <br />9 <br />10 <br />�1 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br />18 <br />�9 <br />20 <br />21 <br />22 <br />23 <br />24 <br />25 <br />26 <br />27 <br />2$ <br />29 <br />30 <br />31 <br />3z <br />33 <br />34 <br />�te�m <br />ApprovaI: <br />uEQu�sT FoR cou�vc��, Ac�ioN <br />1Vlanager Reviewed: <br />Gold Eagie Building At�dition <br />DATE: 06/18/07 <br />ITEM NO.: � O.k <br />Agenda Seetiozt: <br />Backgrouz�d: The own�r o�Gold Eag�e at 3233 Larpen�eur Avenue is seeki�g a bui�ding per�nit �or an <br />addition to their e�isting building, which was constr�zcted in 1961. <br />This �uilding is lacated in the 522 acre Gottfri�ci Pit subwatershed, a land- locked basin, owned and operated <br />by Ramsey County. Discharge �roin Goit�ried Pit is currently control[ed by two pUmps with a cambined <br />ca�acity of approximately 7 cfs. There is a constructed bern� aro�znd the pi�, enabling the water to rise �o an <br />elevation higher than surrounding properties. Due to this berm, the 100- yr hig�a water elevation of Got�fried <br />Pit is 919.26. <br />The City's Comprehensive Surface Water Ma�agement Plar� {CSWIVIP), developed in �990 and updated in <br />2003, has speci�"ie policies regarding the iow floor elevations (�,FE) oi buildiz��;s in subwatersheds, This plan <br />is adop�ed as a pa�c�t at'the Cazt�prel�ensive Plan and referenced in City code 1016.2fiB2. Specifically, Section <br />3 o�the C�W�1�1P, includes tlte followirtg �olicie�: <br />Polic� 1.3 — F'reebaard req�xirements <br />Ali new s�r�ctures are required to be const�ucted so that the low floor elevation is a� lea�t 2 feet above <br />the peak v�rater surface elevation for fihe critical 100-year recurrence interval precipitation event and at <br />�eas� � foat above the surveyed overflow elevation r�f any irnn�ediate�y adjac�n� surface waterboc�y, <br />wetla�ad or s�onm�vater basix�. <br />Policy 1.4 —�'reeboard reQuirern�nts �'or Iand-[acked areas <br />Where structures are proposed below �he overfiow elevation for a land-iocked basin, the ]ow-floQr <br />elevatin�a is to be I�ept at a nr�inimum of 2 feet above the peak water elevation as detezmined fram the <br />highes� of either the � 00-year, 1 o-day eve�� ox back-to-back 100-year, 24-hour rainfalls <br />�'alicy 1.8 — Vulnecable area emerger�cy respons� plan <br />Area� wh�re I00-year flood protection is not possible will l�e identified and emergency res�onse <br />plans will be de�eloped for those areas. <br />Ira revievving Gold Eagle's building addition req�est, we k�ave deterrr�irzed tk�at thzs building does nat rnee� <br />policy 13 or 1.4 of the CSWMP. The existing and proposed LFE on the building is 912.5, In nrder to meet <br />the freeboarc� requirements, tlae buiidin�; elevatioz� wouid have io be at 921.26, which is �3.26 feet above tha <br />c�zrb, and 8.66 feet abo�e the existing building elevatian. Adct�tionally, all ofthe existing bualdings in <br />Raseville t�at are Iocated along Larpenteur Avenue beiween Fernwood and �he Pit are lnwer than the 100-yr <br />hig� water elevation, and therefare do not meet t�e £reeboard eequirements in the CSWN�'. <br />Further, we do not be�ieve that Crottfried Pit eievation is the mps� critical ta GQId Eagle's buildi�g elevation. <br />The more criticai ele�atian for this prope�,y is the flooding eievation at'the low pair�i just to the east of <br />Gottfried Pit near the intersection af Fernwood and Larpenteur. This low pQint is hydraulica�ly Iinked to the <br />Fit and frequentiy �loflds during rain ev�nts. Causes oF �ood�ng in Laarpenteur ean l�e attributed to multiple <br />