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J <br /> Prelitninary Seismic Design Memo " � � <br /> I-405/SR167 Direct Car�nector� Renton,WA � * , <br /> January 27, 2016�Terracon Praject No. 81165011 <br /> section. Pavement will be restored with a rapid set curing Portland Cement cancr�te patch. We <br /> anficipate that about 1 to 2 hours wili be spent at the end of the concrete patching#o ailaw for the <br /> concrete patch to set before opening up the cen#er turn lane to traffic. If the boring are drilled in <br /> the soil shoulder we wili backfill with site soils frorr� the top of the bentonite at 3 feet below the <br /> ground to the adjacent ground surface of the baring location. 7he extra soii cuttings collected wild <br /> be disposed of off-site at an approved dispasal site. <br /> We expect the boring will take place in only about 4 hours to complete. Because of the emergency <br /> nature ofi this work we have scheduled a drill rig to be onsite next Thursday Decembsr 21, 20'!7 <br /> to facility a rapid repair plan, <br /> !f you have any questions you can contact rne at our Terracon- Mountfake Terrace affice at 425- <br /> 771-3304 ar by my cell phone at 425-218-7486. <br /> Slncerely, <br /> � '.�,�'� . C��--�- <br /> Brian E. Christianson <br /> Seniar Project Geologist <br /> Responsiv�e� R�sc�srceiuf � R.efiahf� � - <br /> r � <br /> � <br />