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Geotechnical Engineering Evaluation NGA File No.959616 <br /> Watson Residence Addition July 6,2016 <br /> Everett,Washington Page 13 <br /> into tightlines leading to an appropriate collection and discharge point away from the slope, with <br /> convenient cleanouts to prolong the useful life of the drains. Roof drains should not be connected to wall <br /> or footing drains. <br /> USE OF THIS LETTER <br /> NGA has prepared this letter for Mr. Jeff Watson and his agents, for use in the planning and design of the <br /> development planned on this site only. The scope of our work does not include services related to <br /> construction safety precautions and our recommendations are not intended to direct the contractors' <br /> methods, techniques, sequences, or procedures, except as specifically described in our letter for <br /> consideration in design. There are possible variations in subsurface conditions between the explorations <br /> and also with time. Our letter, conclusions, and interpretations should not be construed as a warranty of <br /> subsurface conditions. A contingency for unanticipated conditions should be included in the budget and <br /> schedule. <br /> All people who own or occupy homes on hillsides should realize that landslide movements are always a <br /> possibility. The homeowner should periodically inspect the slope, especially after a winter storm. If <br /> distress is evident, a geotechnical engineer should be contacted for advice on remedial/preventative <br /> measures. The probability that landsliding will occur is substantially reduced by the proper maintenance <br /> of drainage control measures at the site (the runoff from the roofs should be led to an approved discharge <br /> point). Therefore, the homeowner should take responsibility for performing such maintenance. <br /> Consequently, we recommend that a copy of our letter be provided to any future homeowners of the <br /> property if the home is sold. <br /> Within the limitations of scope, schedule, and budget, our services have been performed in accordance <br /> with generally accepted geotechnical engineering practices in effect in this area at the time this letter was <br /> prepared. No other warranty, expressed or implied, is made. Our observations, findings, and opinions <br /> are a means to identify and reduce the inherent risks to the owner. <br /> o-o-o <br /> NELSON GEOTECHNICAL ASSOCIATES, INC. <br />