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TMC ENGINEERS INC. <br />GEOTECHNICAT & CIVIL ENGINEERING <br />Address: 9542 Pacific Avenue, Anaheim, CA 92804 <br />Tel: (714) 829-5053. Email: Tienchu.PE@gmail.com <br />Certification of Compaction of Filling of Existing Pool at: <br />2108 Alona St, Santa Ana, CA 927061 <br />TO CONTRACTOR: COASTAL ESTATES & DEVELOPER <br />ADDRESS: 10627 EL CAMPO AVE, FOUNTAIN VALLEY, CA92708, <br />DATE: lll2l/20 <br />PERMIT NUMBER: 2017 1794 <br />Dear Mr. BEN <br />In accordance with your request, site visits has been performed at the subject site. The purpose of this site <br />visit was to check the compaction at the address above. <br />This letter to certify that the swimming pool at rear of property had filling material <br />generally consisted of medium light brown sand with some sill (have expansion <br />index less than 20) have been compacted to a minimum of 90olo every 1 feet lift of <br />maximum density and is consider geotechnical acceptable. <br />If permitted by the City, a structural objected such as a room addition can be constructed at or <br />near the swimming pool back fill area in the future. Consultation with a qualified geotechnical <br />engineer should be considered for provision of geotechnical recommendation for structural and <br />foundation design. <br />This Report does not guarantee the work ofContractor, nor does it relieve the contractor from performing <br />their work in accordance with the Contract Documents and applicable codes, laws, rules or regulations. <br />Ifyou have any question please contact us (714-829-5053). <br />Respectfully, <br />W <br />CALIF <br />Ro FP <br />azt! <br />E. <br />* <br />Tien Chu,