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Supplementary Report: <br /> As requested by client, ESNW was onsite to observe the earthwork activities. The following was observed: <br /> Today contractor focused on completely backfilling all open trench line. In the shallower trenches where the sewer <br /> pipe was approximately 2' to 2 1/2' below grade, contractor placed the recycled concrete material and used a hoe <br /> pack to compact the material. Compaction tests indicated adequate compaction of at least 90% or greater at tested <br /> locations. In the deeper trenches, contractor used the fill material excavated out of the sewer trench to backfill above <br /> the recycled concrete lift. Contractor placed the material in 12" loose lifts and used a hoe pack to compact the <br /> material. Compaction tests indicated adequate compaction of at least 90% or greater at tested locations. The <br /> contractor removed rubble from the fill material prior to placing the fill. The contractor removed the rubble sized 2' by <br /> 2' or greater. In areas that were not the recycled concrete material at the top of the trench, the contractor cement <br /> treated the material at an approximate 3% prior to placing the material and used a hoe pack to compact the material. <br /> The contractor was also replacing the recycled concrete from where it was removed to dig the trench. The contractor <br /> used a dozer to spread the material then used a large vibratory drum roller to compact the material. <br /> ESNW will return as needed. <br /> Wendy Jones <br /> COPY TO: CONTINUED ON NEXT PAGE <br />