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Attachment 'A' <br /> HWA GEOSCIENCES INC. <br /> a.trelrrtc,rl <br /> renvin,m1L,•grn,rrmg t(rden/r•qi •{«,. rrruu+nrenra(•/mprrrtou,i Ir.rurr; <br /> September 18,2018 <br /> HWA Project No.2015-067-21 Task 400 <br /> HDR Inc. <br /> 500 108th Avenue NE, Suite 1200 <br /> Bellevue,Washington 98004-5549 <br /> Attention: Jeffrey Zahller,P.E. <br /> Subject: PROPOSAL FOR GEOTECHNICAL ENGINEERING SERVICES <br /> WPCF FEN PHASE 2 <br /> Everett,Washington <br /> Dear Jeffrey: <br /> As requested,HWA GeoSciences Inc. (HWA)is pleased to present this scope of work to provide <br /> additional geotechnical engineering services for the construction of Phase 2 of the Final Effluent <br /> North Facility Improvements project at the City of Everett's WPCF. <br /> HWA provided a scope and budget to provide geotechnical services during construction on April <br /> 18,2017. The provided scope was developed during the design phase and was based on our <br /> knowledge about the project to that date. The scope did not include observation of the proposed <br /> dike construction. Additionally,the scope assumed 2 days of test pile driving and 20 days of <br /> production piles driving,updated information and schedule for the project shows more days that <br /> we assumed initially. Therefore,this additional scope and budget to provide geotechnical <br /> services during construction includes the additional work not added in our previous scope. <br /> PHASE 2—TASK 400 <br /> Construction Services <br /> HWA will provide construction services in support of Phase 2 of the design of the FEN <br /> improvements.This work will include the following subtasks. <br /> • Geotechnical Related Submittal Review: HWA will review RFI related to geotechnical <br /> aspect of the construction. <br /> • Geotechnical Observation during Dike Construction: (10 days assumed)-An HWA <br /> representative will provide full observation during construction of the proposed dike. <br /> This work will not include compaction testing. It is our understanding <br /> that the Cityis goingto verifycompaction levels. <br /> 21312 30µDrive SE <br /> P Suite 110 <br /> Bothell,WA 98021.7010 <br /> Tel:425.774.0106 <br /> Fax:425374.2714 <br /> www.hwageo.com <br /> Federal&State Certified <br /> DBE/MWBE <br />