1920 GRAND AVE 2016-01-01 MF Import

native fill material with filter fabric to prevent silting of the drain rock. A minimum four-inch diameter perforated PVC drain pipe should be contained within the drain to collect groundwater and divert it to an established collection system. . Drainage All surface drainage should be directed away from the existing and proposed suuctures. No drains may be directed toward the top of the slope. All roof drains should be tightlined to the stormwater collection system. UtiliNes Shoring for utility excavations must conform to the excavation support regulations specified by the Washington State Department of Labor and Industries(L&I),as described in "Safety Standards for Constcuction Work, Chapter 296-I55 WAC, Part N,Excavation Trenching and Shoring." The native glacial till soils on-site should be classified as Type A and the fill found near the surFace should be classified as Type C for the pu[pose of shoring according to these safety standards. The site utilities should be placed on bedding material which meets the manufacmrer's specifications. Backfill placed within the fi�t one to two feet above utility lines should be compacted to 90 percent of the MDD, so that utility lines are not damaged during backfill placement and compaction. In addition,rock fragments greater than one inch should bc excluded from this lift. The remainder of the utility excavations should be backfilled and compacted according to Ihe recommendations presented in the structural fill section of this report(Page 5). Conclusion We recommend that DEA be retained throughout the planning process until the plans are finalized and throughout the construction sequence ro moniror site conditions. Limitations The ir�formation presented ir� this anah�sis has bee��prepnred usirtg generalh� accepred geologic a�d engineering practices in use at the time of our i�ivesrigorion. The use of the recommendarions r.ontained in dus reparf for che praposed develnpment asstones no wnrranq�expressed or implied jor d�e geologrc und soil conditior�s described. The injormarion preserued is applicable to the sid�ject proptrh�anf�< !t is expected that the orrsire sorl conditions will reJlect our findings, ha�rei�er, snme variatiorts �nay occun Shoidd cortditions be encoiuuered rhnt cause concern nnd/or are nor discussed hereu�, DEA should be canracted to re-e.raminc thc conditions ericoiwtcred�rith regard to the pmposed developmeru. l� Port GarOner Condominiums-Gaolechnical Report Page B