The URL can be used to link to this page

Home My WebLink AboutMS 06-01; MCCARTHY RESIDENCE; ENVIRONMENTAL IMPACT ASSESSMENT FORM; 2005-09-22NORTH COUNTY '4. COMPACTION ENGINEERING, INC. Project No. CE-7257 September 22, 2005 Leppert Engineering Corp. Attn: Brian Beggs 5190 Governor Dr. Ste. #205 San Diego, CA 92122-2848 Subject: Environmental Impact Assessment Form Section VI Geology and Soils Proposed Twin Homes McCarthy Residence 5115 and 5117 Carlsbad Boulevard. Carlsbad, California Reference: "Preliminary Soils Investigation" prepared by North Ccunty Compaction Engineering, Inc. dated September 8, 2004 Dear Mr. Beggs: Per your request, we are responding herein to Section VI "Geology and Soils" of the Environmental Impact Assessment Form required for the subject project. VI. Geology and Soils Please note there is no engineering geologist required for this project. Therefore, the following questions can only be answered from a soils engineering standpoint of view. a) i. The site is located approximately 6 km from the Rose Canyon fault (type B). The estimated maximum ground acceleration at the site should be evaluated by a geologist. Liquefaction occurring at the site is unlikely due to the following: 1.) Relatively dense sandstone formation underlying the site and the absence of near surfaàe groundwater. P.O. BOX 302002 * ESCONDIDO, CA 92030 * (760) 480-1116 FAX (760) 741-6568 GE 713 rn cc XP. 9/30/05 )-10 Dale R. Regli Registered Civil Geotechnical E A NORTH COUNTY Is COMPACTION ENGINEERING, INC. Project No. CE-7257 September 22, 2005 Page 2 iv. Landslides: The site is underlain by the coastal terrace deposit which is unlikely to have landslide characteristics. A predominately flat lot will be developed with no major slopes. Erosion should not impact the site as long as stormwater management devices are incorporated into the subject project. From a soils engineering standpoint of view, the coastal terrace formation underlying the site produces above average supporting characteristics. On-site soils are classified as being very low in expansion potential (expansion index of less than 5) and should not impact the site. Sewer systems will be available. However the underlying formation at the site will adequately support septic tanks and/or waste water disposal systems. If you should have any questions, please do not hesitate to contact us. This opportunity to be of service is sincerely appreciated. Respectfully submitted, North County COMPACTION ENGINEERING, INC. Ronald K. Adams President RKA:paj cc: (4) submitted Potentially Significant Potentially Unless Less Than Significant Mitigation Significant No Impact Incorporated Impact Impact LI R F1 LI LI LI LI LI El LI LI LI 11 li~ ELI LI LI LI LI LI LI Issues (and Supporting Information Sources). (Supplemental documents may be referred to and attached.) V. CULTURAL RESOURCES - Would the project: Cause a substantial adverse change in the significance of a historical resource as defined in § 15064.5? Cause a substantial adverse change in the signifi- cance of an archeological resource pursuant to §15064.5? Directly or indirectly destroy a unique paleontologi- cal resource or site or unique geologic feature? Disturb any human remains, including those interred outside of formal cemeteries? VII. GEOLOGY AND SOILS - Would the project: a) Expose people or structures to potential substantial adverse effects, including the risk of loss, injury or death involving: Rupture of a known earthquake fault, as delineated on the most recent Alquist-Priolo Earthquake Fault Zoning Map issued by the State Geologist for the area or based on other substantial evidence of a known fault? Refer to Division of Mines and Geology Special Publication 42. Strong seismic ground shaking? Seismic-related ground failure, including liquefaction? Landslides? b) Result in substantial soil erosion or the loss of topsoil? c) Be located on a geologic unit or soil that is unstable, or that would become unstable as a result of the project, and potentially result in on- or off-site landslide, lateral spreading, subsidence, liquefaction, or collapse? d) Be located on expansive soils, as defined in Table 18 - 1-B of the Uniform Building Code (1997), creating substantial risks to life or property? 7 Rev. 07/26/02 Potentially Significant Potentially Unless Significant Mitigation Impact Incorporated LI LI Less Than Significant No Impact Impact LI Issues (and Supporting Information Sources). (Supplemental documents may be referred to and attached.) e) Have soils incapable of adequately supporting the use of septic tanks or alternative wastewater disposal systems where sewers are not available for the disposal of wastewater? VII. HAZARDS AND HAZARDOUS MATERIALS - Would the project: Create a significant hazard to the public or the environment through the routine transport, use, or disposal of hazardous materials? Create a significant hazard to the public or environment through reasonably foreseeable upset and accident conditions involving the release of hazardous materials into the environment? Emit hazardous emissions or handle hazardous or acutely hazardous materials, substances, or waste within one-quarter mile of an existing or proposed school? Be located on a site which is included on a list of hazardous materials sites compiled pursuant to Government Code Section 65962.5 and, as a result, would it create a significant hazard to the public or environment? For a project within an airport land use plan, or where such a plan has not been adopted, within two miles of a public airport or public use airport, would the project result in a safety hazard for people residing or working in the project area? For a project within the vicinity of a private airstrip, would the project result in a safety hazard for people residing or working in the project area? Impair implementation of or physically interfere with an adopted emergency response plan or emergency evacuation plan? Expose people or structures to a significnt risk of loss, injury or death involving wildiand fires, including where wildiands are adjacent to urbanized areas or where residences are intermixed with wildlands? VIII. HYDROLOGY AND WATER QUALITY - Would the project: a) Violate any water quality standards or waste discharge requirements? 8 Rev. 07/26/02