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May 13, 19E2 <br />Dan Olion <br />Koll Conuactor Company <br />2021 - 132 Ave. N.& <br />Redmond, WA 9E032 <br />SubJects PubUc Works Permtt +PE1-229 <br />O'Donnell-Brlgham Pro)ect <br />Dear Mr. Olsons <br />Have rnmpfated the revlew of thc storm xwer systcm and found the following <br />ltems need attentlon: <br />Bldg. 8 - 39" C.B. wuth of parking lot. <br />a. expose l2" culvert� and clean to manhole <br />b. lnlet at south edge oi parking lot, this unit hae not been imtalled. <br />Please Install this unit or provldc a profesalonal englneer'e <br />statement a� why It was not neceuary. <br />l6th St. - West �ide, e•dsting inlet, grout new tnterior penetratlona <br />i�to lnlet. Clean and treat all suriaces to (nsure a good bond. <br />Easi side, ext�ting [nlet, xale loose grout and rcapply as above. <br />61Ag. I I - Northeast carner - Control manhole, attach llft gate chaln <br />per detall <br />Bldg. 12 - a. Control manhole off of Northeast corner, same as Bldg. l l. <br />b. Inlet off of Northeast comer on 73th Street S.W. Grout <br />new penetratlon to exlsUng inleG <br />Drlveway unit oif of Northeast comer. Thls urilt tw not <br />txen In�talled. Install or provlde etatement from a prolesslonnl <br />engineer why It le not requlred. <br />Bldg. 13 - Catch baaln off ot Northweat corner, aame as Bldg. ! I. <br />Regard[ng the newly Inatalled french drain system on the south properry linc. <br />PJeax submlt tor epproval a plan ot tlu mork enta11e0. <br />Plea�e provlde locking Iid� tor all "Control Manhole�" as shown on the detatl. � <br />At the Southcaat property corner, brinq to grade the exlaUng sanitary seM..r <br />manhole cover. <br />1 <br />1 <br />J <br />