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Project No. VP-6214-01 <br />Verizon Wireless — Fisher Floral <br />buried metallic structures (e.g. pipes) shall be properly coated, <br />an alternative, utility piping may be buried in PVC lined trenches <br />clean sand. The width of the trenches should be a minimum of three <br />CITY OF SANTA ANA <br />Planning and Building Agency <br />Approved <br />FOR PERMIT ISSUANCE <br />and sealed. As <br />kqI;Wllk5d with <br />Wdiameter of <br />the pipes. A corrosion consultant should be retained if a more detailed evaluation or a <br />protection system is desired. <br />Utilities <br />There are several existing utility lines on the project sites. Precautions should be taken in <br />advance prior to construction. <br />Any soft and/or unstable material encountered at the bottom of excavations for any new <br />utility trenches should be removed and be replaced with adequate bedding material. <br />The on -site soils are likely to be unsuitable for bedding or shading of utilities and piping. <br />A non -expansive granular material with EI less than 20 may need to be imported for this <br />purpose, depending on materials made available during grading. <br />Trench backfills should be mechanically placed and compacted in thin lifts to at least 90 <br />percent of the maximum dry density as determined by ASTM Test Method D1557. <br />Flooding or jetting for placement and compaction of backfill is not recommended. <br />Grading Recommendations <br />No major grading is anticipated during construction of the equipment enclosure structure. <br />General Grading Procedures (If Any) <br />1. Any existing unsuitable materials including tree roots should be removed and <br />hauled off -site. <br />2. All recompacted native and import soil should be spread, watered or aerated, <br />mixed and compacted by mechanical means of approximately six-inch thick lifts. <br />The minimum degree of compaction obtained should be at least 90% for all <br />