1220 75TH ST SW 2018-01-02 MF Import

��G��D�J�� JUN 1� � ............ __._- �ERETT CITY �F ,�, � r,,,, w� Hv.[on Der�nia E� Associat¢s, Inc. � L'onsu/ting Enginecrs Mr. Dan Olson THE KOLL COMPlWY 2021 - 152nd Avenue N.E. Redmond, Washington 98052 May 27, 1982 SU4JECT: 0'DONNELL BF.IGHAM 8 PARTNERS/N.k. P,1INE FIELD INDI!;TRIAL CENTER Dear Dan: Reference is made to mv letter of May 19, 1962 deleting the two (2j catch basins, are as follows: . „. , ''' �r .i �; , � �:r , �'. /r °, �/ � ' , /�. � ,. , • , < , RtCE� ;�r�., �, NIAY 2 8 1982 ` ' THE N•O.!. G�,. ; The reason for Building 8- the Type IV CB/solid lid was intended to serve as e junction box to allow the outfall pipe fran the storm system to be laid with a minim�nn of structural excavation in the fill prism; the deletiun of the structure will not affect the operation of the system Building 12 - the Type IV inlet was designed to intercept the run- off from the access road and tightline it to a nearby existing catch basin in 75th Street. However, a plethora of underground utilities will nk�ke this 'nstallation difficult. Since thei�e :s an existing catch basin within app�•oximately twenty feet of the inlet lucation and since storm runoff will flow through the driveway a�proach to the existing gutter and to the existing catch basin; deletion ot the Type IV inlet should produce no drainage problems. Were the existing CB not so clo;e to the point of discharge and were there not utilities in place to cbnflict with construction, we would recommend installation of the intet. However, these two condi- tions promote our recomnendation th�at the inlet may be deleted. If you hav? any questions, please call us. Sinc rely, HU NIS 1 W. in Sp rur WJS:tIt SOCIATE$/I INC. 1�13�� 71a'�/7:ft'�..�JI(�/l. ��OO«I�.�tA��ll�i�7�01) C��.�/i�� • �/7nlIP /f)/-.i-l.'iil � �