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CITY OF SANTA ANA <br />Planning and Building Agency <br />St. Barbara Catholic School <br />Project No.: D-6289-01 <br />Buildings should be provided with gutters and downspouts. <br />connected to the area drain system by pipes. <br />Grading Recommendations and Procedures <br />Approved <br />FOR PERMIT ISSUANCE <br />should be <br />Master ID: <br />Date: <br />Following are our general recommendations related to the site grading, if any: <br />Prior to grading, existing footings, existing debris and other surface and subsurface <br />structures shall be entirely removed and hauled off site. All the debris and tree roots <br />should be completely removed and hauled offsite. <br />a. Non building areas like patio, driveway and walkways should be scarified top 12 <br />inches below finish subgrade and compact to minimum 90 percent and aggregate <br />base should be 95 percent of ASTM D1557 laboratory test standard. <br />b. The bottom of the excavation shall be inspected by the soils engineer/or geologist. <br />The bottom of excavation may be wet and in yielding condition. In this case, the <br />bottom should be stabilized by providing a layer of 12 inches of crush rock, if <br />required. <br />c. On -site material is suitable for backfill if moisture conditioned. If required, import <br />fill should consist of clean sand free from vegetation, debris, or rocks larger than 3 <br />inches in size. <br />d. In case construction is commenced, in rainy season, the bottom of subgrade soil <br />will be wet and in yielding condition. If encountered it should be mitigated by <br />placing a minimum of 12 inches of aggregate base to stabilize the bottom of <br />excavation. <br />e. All recompacted native and import soil should be spread, watered, or aerated <br />slightly over optimum moisture mixed and compacted by mechanical means of <br />approximately six-inch thick lifts. The minimum degree of compaction obtained <br />25 <br />