1701 41ST ST 2018-01-02 MF Import

CZ /C�E�✓ 1 TO Marvin C. Haglund, Director of Utilities FRo.!✓1�oy VanDerVleersche, Water Supt. & Craig Thompson, DATE August 22, 1977 SUBJECT FAXIILY DENTAL CLIDIIC ICJ CITY OF .EVERETT. I --� v I L//� 4 WATER: Sewer Supt. EVERETT. WASHINGTON were-t The original plan was to extend the water service from the 8" cast iron main on Colby Avenue. We were asked later about the possibility of making the service connection off of the 2" dead end main on Wetmore Avenue. We ran a -flow check on the 2" at Wetmore Avenue and can produce 40 gallons per minute with a 20 psi residual. I called Ken Callahan and explained the situation. His response was that the Clinic would not require very much water and that a Wetmore Avenue connection vrould be adequate. The ut' ". d ^' �" adequate. ali1y ui aWing shows a a service line to the Clinic. This would indicate that their requirements might be greater than expected, .in which case a connection on Colby would be in order. Our concern is that we not lower pressures in the 2" below acceptable limits. If a W3" service will provide an adequate water supply to the Clinic, the Wetmore Avenue connection would probably suffice, but if a larger service is required, we would recommend the Colby connection. SEWERS: The basic plan presented by the Architects would be an acceptable second choice to me except that the proposed 6" line from the manhole to the Clinic would be considered a side sewer. and as such no stub outs for other side sewers would be allowed. In addition, the side sewer has to maintain a depth of at least 5 feet within the right of way. Also, all side sewer stub outs must be 6" diameter pipe. My first choice and perhaps the least costly would be as John has suggested with an additional manhole at the end of the right of way and the extension of the 8" main to that point. Due to the topography of the area, this alternative would allow for constructing the line at less depth than has been proposed. It «o uld also allow the connection of McDonald's to this main if they chose (McDonald's has a long private side sewer to Colby which is fairly flat and get plugged with grease qu` -� often. ) Another benefit is that it would shorten the length of side sewer for us maintain thereby reducing the cost to us of determining if side sewer plugs are within the right of way or not. I presume that Engineering will be requiring more design information such as profiles. I l � AUG 2 •F lsn : D Grry..01_..EVCRF EnBinerring Dept.