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April 16, 2025 <br />Page 6 <br />7.1 Site Grading Recommendations <br />CITY OF SANTA ANA <br />Planning and Building Agency <br />Project Number 25129-25 <br />Approved <br />FOR PERMIT ISSUANCE <br />Where grading is required for new improvements, all vegetation and demoliti hiahabrigDshall be <br />removed and hauled prior to the start of grading operations. Existing vege aii$n 'shall not be <br />mixed or disced into the soil. Any removed soils may be reutilized as compacted fill once any <br />deleterious material or oversized materials (in excess of eight inches) is removed. Grading <br />operations shall be performed in accordance with the attached "Specifications for Placement of <br />Compacted Fill". <br />All disturbed and/or fill soils (about 1 to 1'/2 feet below ground surface) shall be removed to <br />competent native material, the exposed surface scarified to a depth of 12 inches, brought to <br />within 2% of optimum moisture content and compacted to a minimum of 90% of the laboratory <br />standard (ASTM: D 1557) prior to placement of any additional compacted fill soils, foundations, <br />slabs -on -grade and pavement. Grading shall extend a minimum of five horizontal feet outside <br />the edges of foundations or equidistant to the depth of fill placed, whichever is greater, where <br />possible. <br />It is possible that isolated areas of undiscovered fill not described in this report are present on <br />site; if found, these areas should be treated as discussed earlier. A diligent search shall also be <br />conducted during grading operations to uncover any underground structures, irrigation, or utility <br />lines. If encountered, these structures and lines shall be either removed or properly abandoned <br />prior to the proposed construction. Any imported fill material should preferably be soil similar to <br />the upper soils encountered at the subject site. All soil shall be approved by this firm prior to <br />importing at the site and will be subjected to additional laboratory testing to ensure concurrence <br />with the recommendations stated in this report. <br />Care should be taken to always provide or maintain adequate lateral support for all adjacent <br />improvements and structures during the grading operations and construction phase. Adequate <br />drainage away from the structures, pavement and slopes should always be provided. <br />NorCal Engineering <br />