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CITY OF SANTA ANA <br />Planning and Building Agency <br />(l rmililduiatPr <br />Approved <br />FOR PERMIT ISSUANCE <br />Free standing groundwater was not encountered in our test hole. Master ID: <br />a e <br />Based on the "Historically Highest Ground Water Contours and Boreh e To:g Data <br />Locations, Newport Beach Quadrangle", Plate 1.2 of the Open -File teport 97-08 <br />prepared by California Division of Mines and Geology (CDMG), Department of <br />Conservation, the historically highest groundwater level at the subject site is about 5 ft. <br />below the ground surface. <br />Free standing ground water was not reported to be an issue at the site and in the vicinity. <br />Deep footings/excavations are not proposed for the site; therefore adverse effects due to <br />groundwater are not anticipated for the proposed development. <br />Note: it is not anticipated; however, if wet soils are encountered, removal of the wet soils <br />and replacement with drier soils/cement slurry can be performed. In addition, if needed, <br />crushed rock and or geogrids for bridging, etc. can also be used. This will be determined <br />by the geotechnical consultant based on the exposed conditions during the excavations at <br />the site. <br />Seismicity <br />The subject site is located in Southern California, which is a major earthquake -prone <br />zone. Therefore, the owner(s) of this property should be aware of the seismic risks <br />associated with being located in this zone. <br />The Soil Site Class D Default can be used for the soils underlying the subject site. <br />The Seismic Design Category D can be used for the site. <br />The following seismic parameters obtained from the computer program https:// <br />seismicmaps.org prepared by SEAOC [Structural Engineers Association Of <br />California] in conjunction with California's Office of Statewide Health Planning and <br />Development [OSHPD] ) in accordance with ASCE7-16 can be used for the site. <br />• Fa = 1.2 <br />• Fv = null* <br />• Mapped Spectral Accelerations Values: <br />SS =1.328 (for the short period of 0.2 second) <br />Si = 0.474 (for the 1-second period) <br />• Maximum Considered Earthquake Spectral Response Accelerations: <br />Page 3 <br />