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GEOTECHNIGAL INTERNATIONAL <br />LAN & ASSOCIATES <br />Topographic Survey & Civil . Structural . Geotechnical, Engineering. <br />13 I 39 Harbor Boulevard, Garden Grove, CA 92843 <br />Tel: (714) 414-9215, Fax: (714) 537 -7974,Email: Lanphan.r9(Zlhotrnail.com <br />Tri Duc Duong <br />14l8 N. Mar Les <br />Santa Ana, CA,92706 <br />Subject Geotechnical Engineer's Certification of Rough And Precise Grading For <br />Proposed Residential Development, l418 N Mar Les, Santa Ana, California <br />92706. <br />Dear Mr. Duong <br />I hereby certify that the rough and precise grading ofthe subject site has been performed in <br />accordance with the approved soil report and approved grading plan and our additional <br />recommendations during grading; and the graded site is considered geotechnically acceptable <br />and suitable lor the intended use. The previous recommendations of the approved soil report <br />are still valid and should be properly implemented, where applicable. <br />The proposed building footing trenches can be excavated, and construction of the proposed <br />building can be started. <br />It is noted that the remedial removal and recompaction of the upper 3 ft. thick pre-existing <br />earth materials olthe building pad area and minimum 3 ft. beyond/outside of the perimeter of <br />the proposed building has been performed and the fill / backfill earth materials were <br />compacted to minimum ol 90% of the maximum density determined in accordance with the <br />ASTM Test Method D1557. <br />Ifyou have any questions or require clarification, please contact this office. This opportunity <br />to be of service is sincerely appreciated. <br />Lan N. Pham, P.E. <br />Chief Geotechnical Engineer <br />RGE686, Bxp.313112021 <br />llo. a66 <br />Exp. <br />N. <br />, <br />rG <br />6a <br />?ROF[ <br />z. <br />5 <br />0F <br />"r' <br />CALII <br />May 28,2019 <br />Very truly yours,