10632 7TH AVE SE Geotech Report 2025-07-28

I June 6,2008 Serenity Meadows I L&A Job No. 8A017 Page 18 inch-minimum-diameter, perforated, rigid, drain pipe, laid a few inches below the bottom of perimeter footings The trenches and the drain lines should have a sufficient gradient to generate flow by gravity. The drain lines should be embedded in washed gravel completely wrapped in non-woven filter fabric to within about 12 inches of finish grade. The remaining trenches may be backfilled with clean onsite impervious soils. Water collected by the perimeter footing subdrains should be tightlined,separately from the roof and surface storrawater drain systems,to discharge into the under drain of the rain gardens. I Cleanouts ISufficient number of cleanouts at strategic locations should be provided for the underground drain line systems. The underground drain line systems should be maintained periodically to Iprevent clogging. LIMITATIONS 1 This report has been prepared for the specific application to the subject project for the exclusive use by J&B Excavating and their associates, consultants, representatives, and contractors. We recommend that this report, in its entirety, be included in the project contract documents for the information of the prospective contractors for their estimating and bidding purposes and for compliance with the recommendations in this report during construction. The conclusions and interpretations in this report, however, should not be construed as a warranty of the subsurface Iconditions. The scope of this study does not include services related to construction safety precautions and our recommendations are not intended to direct the contractor's methods, techniques, sequences or procedures, except as specifically described in this report for design considerations. 1 LIU & ASSOCIATES, INC.