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JUN 2 <br />rIT-1 OF EVERETi <br />Horton Dennis & Associates, Inc. <br />consulting rngincers <br />May 27, 1982 <br />Mr. Dan Olson <br />THE KOLL COMPANY <br />2021 - 152nd Avenue N.E. <br />2edmend, Washington 98052 <br />SUBJECT: O'DONNELL BRIGHAM & PARTNERSiN.W. <br />PAINE FIELD INDUSTRIAL CENTER <br />Dear Dan: <br />Reference is made to my letter of May 19, 1982 <br />deleting the two (2) catch basins, are as follows: <br />r <br />R EC E'V r'. <br />MAY 2 8 1982 <br />THE t'0!!• Gr'. <br />The reason for <br />Building 8 - the Type IV CB/solid lid was intended to serve as a <br />junction box to allow the outfall pipe from 'he storm system to be laid <br />with a minimum of structural excavation in the fill prism; the deletion <br />of the structure will not affect the operation of the system. <br />Building 12 - the Type IV inlet was designed to intercept the run- <br />off from the access road and tightline it to a nearby existing catch <br />basin in 75th Street. However, a plethora of underground utilities will <br />make this installation difficult. Since there is an existing catch, basin <br />within approximately twenty feet of the inlet location and since storm <br />runoff will flow through the driveway approach to the existing gutter and <br />to -Lhe existing c,,,tch basin; deletion of the Type IV inlet should produce <br />no drainage problems. <br />Were the existirg CB not so close to the point of discharge and <br />were there not utilities in place to conflict with construction, we <br />would recommend installation of the inlet. However, these two condi- <br />tions promote our recommendation that the inlet may be deleted. <br />If you have any questions, please call us. <br />Si <br />W <br />WJS:tIt <br />n 54) <br />IS &IASSOCIATESP INC. <br />6133 Si.vth Ave. Sou,`%, Batt%, A''aA;iigton 08108 • Phone 767-3456 <br />