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JAN-O6-2003 MON 02;01 PM STEEN ENGINEERING FAX N0. 763 585 6757 P, 02 <br /> 1/6/02 <br /> RE: ORONO PRO�SSIOIVAL�UILDYNG <br /> S'1'EEN#SY�A201 <br /> THIS FAX YS IN RE�R�NCE TO DRAIN TYLE SYS'I'EM <br /> PER OUR TELEpHONE C4NVERSATION TODAY A PUMP IS NOT�QUIREb <br /> �'OR THE DRAIN TILE. THE DRAYN TILE W'YY.L CONNECT DIRECTY.Y TO TY�E <br /> ROOF DRAIN SYS'TEM BELO'VV THE MECHA1vICAL ROOM FLOOR. <br /> PLR THE CY'VIL DRAWYNG'S AL�.THE CATC�I SASINS RIM ELEVATIONS ARE <br /> BELOW THE BUYY.nTNG F11�YS�I FLOOR E1.EVATION. THIS BEYNG THE CASE,IF <br /> T�E�2E IS A BACK-UP IN THE CATCH BASIN STORM SYST�IVI ON SITE,THE <br /> `�VATER WOYJLD CONI�UP THRU THE CATC�BASINS BEFORE WO1tKING IT'S <br /> WAY UP'TO T13E BU'YLDING. <br /> YT THERE IS BT.00KAGE YN THE STOYtM SEWER BETWEEN TI�E ROOF DYt�1IN <br /> AND THE POINT IN WT�ICH THE STORM DRAYN CONNECTS TO THE SYTE <br /> CATC�BASIN SYSTEM,A BACYCWATER CHECK VALV'E WILL PROTECT THE <br /> BUILDTNG DRAIN TILE SYSTEM FROM F'LOODING. <br /> 1'HE BACKWATER CAECK VALVE'WILL�E IN A BASIN LOCATED IN TI�E <br /> MECHAI�ICAL ROOM. <br /> YF YOU HA'�ANY QUESTIONS FEEL FREE TO CAI.L. <br />