11802 EVERGREEN WAY BASE FILE 2018-01-02 MF Import

G E O'rE C H 13756 Northaat 2p6 Saea,S�ioe 16 n�n�,w..n�axi vao�s CONSLJLTANTS, IINC. (az��a�-s6i8 anx(425y 7a7-ssei Celebmlin�20 Yeas 1986-t006 July 18, 2007 JN 05233 Lucia Development, LLC 620 North Brand Boulevard, 6th Floor Glendale, Califomia 91203 Attentlon: Steven R. Mongeau Subject: Final Letter Geotechnical Engineering Observations Propose Original Roadhouse Grill 11804 Highway 99 Everett, Washington Dear Mr. Mongeau: Geotech Consultants, Inc. provided geotechnical engineering observation and testing services dur- ing the mass earthwork, pipe pile installatlon, and dete�uun vault construction at 11804 Highway 99 in Everett. Our work began on July 24, 2006 and ended February 27,2007. During our inttial visits to the sfte, we abserved the sfipping and tested the compaction of the mass fill placed on the site. All tests indicated thet at least 95 percent of the maximum dry density(MDD) (by modifled proctor)wes obtained. We retumed to the site to observe the installation of 4inch galvanized steel pipe piles for the Phase 1 restaurant building and 6-inch galvan'ized steel pipe piles for the Phase 2 retail building. 150 plles were installed for Phase 1 to depths ranging from appro�amateiy 30 to 45. Four load tests to 200 percent of the allowable load of 10 tons per pile we:s successfully conducted on production piles. Total deflecdons of one tenth to three tenths of an inch were encountered in the load iests. 145— 6-inch piles were installed for Phase 2 to depths of about 20 to 30 feet below grade. Two- hundred percent load tests were successfully conducted on two of the production plles. These tests indicated less than two tenths of one inch of pile deflection at 200 percent of the 15 ton de- sign load. All of the During our further visits to the site, we observed the excavation for the storm water vauit on the eastem end of the site. The base of the vauft was overexcavated through the old fill and peat soils to expose s8if silis that are acceptable for the desi�n bearing pressure. The overexcavation was backfilied to the proposed vaGlt base with quarry spalls. The vault wall backfill meterial consisted of onsite silty sands. Random density tests pertortned on the va�it backfill lifts as placed indicated compaction of at least 95 percent(MMD). 1Ne performed periodic density testing of the backfills in the storm water lines a� described in our attached field reports. All of these tests indicated compaction at or above recommended mini- mums. . To the besi of our knowledge, the v�ork which we observed, in accorJance with the scope of our services, w�s generelly pertormed in conformance with our recommendations, our understanding of the approved plans. We had no verbal or written communica6on with the 5tructural Engineer of Record during our involvement in the construction process. GFOTECH CANSULTANTC.INQ �