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May l3, 19E2 <br />Dan Olwn <br />Koll Contractor Company <br />2021 - 132 Ave. N.E. <br />Redmond, WA 9E032 <br />Sub)ect= Publlc Works Permit p81-229 <br />O'Qonnell-&Igham ProJect <br />Dear Mr. Olaons <br />� ,.._ _ . . <br />("'.e�•� : <br />i ' <br />f 'd.: <br />y� � <br />�1 fi <br />Have completed the review of the storm xwcr system and found the foUowing <br />ltems need attentions <br />B�dg• 8 - 34" C.F3. wuth of parking lot. <br />a. expose !2" culvert� and clean to r�anhole <br />b. lnlet at aouth edge ot pnrking lot, this unit hae not been installed. <br />Please install this unit or providr. a professtonel engtneer'e <br />statement a� ahy it was not necr_uary. <br />16th St. - West stde, exiatlns Inlet, Rrout new lnterlor penetratlons <br />lnto Inlet. rlean and treat all surfnces to lnsure a good bond. <br />East sidr, existing tnlet, scale loose grout anA reapply as above. <br />���B• 1� - Northezst corner - Control manhole, attach llft gate chaln <br />per detal: <br />Bldg. 12 - a. Control manhole oft uf Narthcast corner, same a� Bldg. I1. <br />b. Inlet off of Northeast co� ner on 73th Street S.W. Grout <br />ncw peneuaUo� to exlsUnq Inlet. <br />Drlveway unit otf of Northe•ut comer. Thia iuiit has not <br />been In�talled. [nstall c• provlde atatement trom a professtons) <br />engineer ahy !t Ia not requlred. <br />Bldg. 13 _ Catch baaln off o[ Northwest crorner, aame as Blds. 1 l. <br />Regarding the �ewly Instatled trench drefn system on the south properry line. <br />PJease aubmit tor epproval e plun of the aork entelleA. <br />Pleex provlde locking Iids for all "Control Manholes" as ahown on the detal�, � <br />At the Southeast property comer, brinq to grade the exlaUng eanitary ne�ver <br />rt,enhole cover. <br />I <br />, <br />1 <br />