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CITY OF SANTA ANA <br />Planning and Building Agency <br />Mr. Amir Houriani <br />Project No. 32-6235-02 <br />1601-1607 N. Bristol Street <br />October 2, 2023 <br />Liquefaction settlements were determined using a design water level at the historically 1 <br />40 feet below grade and the seismic settlement did not exceed the limits for a conventio <br />when using a design water level at the proposed infiltration level of five feet bgs, the liq <br />was calculated to be about 6.9 inches. <br />Page <br />pproved <br />FOR PERMIT ISSUANCE <br />IaWr level of <br />g; however, <br />We recommend that the horizontal distance of the infiltration system be a minimum of 50 feet away from the <br />proposed building foundations. Based on this condition, we do not expect the soils near the proposed <br />building to become saturated nor increase the risk of additional building settlements due to the proposed <br />infiltration system. <br />Based on the soils present at the site to the depths explored, it is our opinion that the infiltrated stormwater <br />will move in a vertical direction with no potential for creating perched water conditions. The infiltration <br />facilities shall be a minimum of ten feet in any direction from any foundations and ten feet horizontally from <br />private property lines. Infiltration in compacted fill is not allowed. Provided that the infiltration facilities are <br />located a minimum of ten feet from any foundations, the infiltration would not result in distress to the existing <br />or adjacent structures due to expansive soils. When prepared, this office shall review the infiltration <br />plans and specifications. <br />If you have any questions regarding the information presented in this report, please contact this office. <br />Respectfully submitte , <br />A. I.AEOECH I AL, INC <br />B ce,R.G.E. 2673 <br />Senior Engineer <br />MBS:wb <br />v <br />gRUCFs �F2� <br />No.2673 a <br />Fxp:06-30-24 <br />�sT�l��OrECHN��P��P <br />\F OF CA1F��� <br />Distribution: (3) Mr. Amir Houriani <br />Enclosures: Location Map, (Figure 1) <br />Site Plan, (Figure 2) <br />Percolation Test Reports <br />Seismic Settlement Analysis <br />Quadrangle Location Map <br />Groundwater Map <br />A.G.I. Geotechnical, Inc. • 16555 Sherman Way, Suite A • Van Nuys, CA 91406 <br />/� �1 Office: (818)785-5244 • Facsimile: (818)785-6251 <br />