8120 LARIMER RD 2016-01-01 MF Import

i� AMARC INC. ENGINEERS ARCHITECTS PLANNERS - - ---- � . ; �; � _ , _�._. -� � ,� ; �;, � ��i �. . 1� 3 ; �� i ' � �� � 11-30-95 Nir. Dan Mathias, P.E. City of Everett Public Works 3200 Cedar Street Everett, Wa. 98201 Re: Sewer Availability for 8120 Larimer Road Proposed Plan per your letter of 17Feb95 Dear Dan, � ��LV�� �D H'�J� �' C' o�— ��tc� �OJ � � � o((�oE��`1 ��J15� G� �O� l��Qo�G� ��i�l: `l� � �,,�, r� �''� �so 2 ,� /� ��Q ��'��prg � S s art� �,��'� ��,-�' � � �, l� I�.s As a result of my meeting with you, our telephone conversatiors, my site visit, and a review of the operating profile, both actual and pro;rct� �, of tF�e South End Sewer Interceptor in the vicinity of 8120 Larimer Road, I v;c �:�' like to suggest that a single residential user tap connection into the 30" o_��n;;ier ductile iron pres�ure sewer be reviewed against the following: 1 Sewer tap inseition point to be at approx elev 138 with a 2" tap. This elevation uses the City of Everett Datum. 2. Pump invert to be at or above elev 138. 3. Provide a residential pumping system that will be abie to meet the head requirements, (estimated) for year 2020. 4. Design to provide for city access to valve shutoff on city easement, for backflow protection by maintainable check vaive protected by a shutoff valve ahead of the check at the pump station site, and that the selected pump be able to discharge at approx 5gpni. As to selecting the head requirements for the year 2020, I used the Hydraulic Grade Lines drawing of 10-18-95 that you provided me at our 10-12-95 meeting. in attempting to graph the curve for peak flows and peak heads, I arrived at a possible peak head for year 2020 0: something like 97 to 102 feet. 1300 11�7TH AVENUF SE. SU!TE ��1 BELLEVUE,WASHINGTON9800d Y5 FAX: (206) 453�2213 PH: (206) 453•2212