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Project No.: 2157-S <br />1433 Cypress Ave, Santa Ana <br />9.7 Trench Eackfill <br />Utility trenches shall be compacted to a minimum of 90 percent of the maxi <br />determined by ASTM D-1557 standard density. Density testing, along with <br />performed by a Pacific Geotech representative, to verify proper compaction. <br />CITY OF SANTA ANA <br />Planr(%eogC3-uilding Agency <br />Approved <br />FOR PERMIT ISSUANCE <br />dry density as <br />ster ID: <br />ng, should be <br />If utility contractors indicate that it is undesirable to use compaction equipment in proximity to a <br />buried conduit, we recommend using a light weight mechanical equipment or covering the conduit <br />with clean granular material prior to initiating mechanical compaction procedures. Where utility <br />trenches are proposed parallel to building footings (interior and/or exterior trenches), the bottom of <br />the trench should not extend below a 1 horizontal to 1 vertical plane projection downward from the <br />outside bottom edge of the adjacent footing. Where this condition occurs, the adjacent footing <br />should be deepened. <br />9. GEOTECHNICAL INSPECTION <br />This report presents recommendations based on the assumption that the subsurface conditions do <br />not deviate appreciably from those found during our current site exploration. The possibility of <br />different localized soil conditions cannot be discounted. It is the responsibility of the owner or his <br />representative to bring any deviations or unexpected conditions observed during construction to <br />the attention of Pacific Geotech. This way any required supplemental recommendations can be <br />made with a minimum of delay to the project. Construction should be observed and/or tested at the <br />following stages by Pacific Geotech. <br />• Shoring excavations <br />• Grading and compaction <br />• All footing excavations before placement of steel <br />• Trench backfills <br />• When any unusual conditions are encountered <br />If any of these inspections to verify site geotechnical conditions are not performed by Pacific <br />Geotech, liability for the safety and stability of the project is limited only to the actual portions of the <br />project approved by Pacific Geotech. <br />PACIFIC GEOTECH, INC. <br />