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Rep �-ITFF <br />m <br />J. B. FRIEL & CO. <br />Civil Engineers <br />9502 19th Avenue SE, Suite D <br />Everett, Washington 982o4 <br />337-3400 <br />March 8, 1979 <br />Mr. Clair Olivers <br />City of Everett <br />City Hall <br />Everett, Washington 98201 <br />RE: Ron King Drainage Study <br />5200 Block Colby <br />Dear Clair: <br />In answer to your questions regarding the above referenced <br />drainage plan submittal, please note the following: <br />1. Regarding the need for a profile of drain lines,please <br />note that all profile type data is included on the plan that was <br />submitted. Specifically, pipe size, length and slope are indicated <br />in addition to the top and invert elevations of each structure and <br />the storage capacity of each segment of structure or pipe below <br />design water surface elevation. <br />2. Regarding the size of Manholes 1, 2, 3 and 4, please <br />note that they are standard type II catch basins APWA Standard <br />Plan 55. <br />3. Detail of Manhole N1 with control structure was included <br />in original submittal; however, a second copy is enclosed. <br />Specific information regarding orifice diameter, depth of head, <br />and orifice outlet invert elevation is included on the specific <br />plan. <br />Should you have any questions or need additional information, <br />please contact our office. <br />GEA:slp <br />Enclosures <br />cc: Mr. Ron King <br />Very truly yours, <br />GRAHAM E. ANDERS014 <br />