Reso PC15-01 PC Reso (3051 ) to Adopt Initial Study-Mitigated Negative Declaration - La Palma

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Mitigated Negative Declaration American remains shall comply with CEQA Guidelines Section 15064.5(e).The note on the plans shall be subject to review and approval of the Planning Services. P subject PP g Geology and Soils Mitigation Measure GEO-1: Prior to the issuance of project Building Permits, the applicant shall submit plans and specifications complying with all of the recommendations of the Geotechnical Investigation and Pavement Design Report (September 2012) prepared for the project. At a minimum, the plans shall specifically include the following measures to address the impacts from native surface soils with high expansion potential: 1. Mat foundations shall have a minimum thickness of 12 inches and be properly steel reinforced. 2. Building pads shall be underlain with a minimum of 12 inches non-expansive fill layer or 12 inches of lime-treated native soil material. This layer shall be compacted to at least 90 percent relative maximum density. 3. When continuous perimeter and isolated interior spread footings are used,they must be founded at a minimum depth of 24 inches below rough soil pad.Both interior and perimeter foundations should be founded at the same elevation below pad grade with the exception of any soil retaining structure foundations. 4. Footing excavation shall be saturated with water(but not overly saturated) and continue to be periodically saturated after footing excavation and prior to concrete placement. 5. Prior to the issuance of project Grading and Encroachment Permits,the applicant shall submit a supplementary letter from the GeotechnicaI Engineer regarding the recommended pavement section(s) for permeable pavement. Hazards and Hazardous Materials Mitigation Measure HAZ-1:Prior to demolition, a complete asbestos survey shall be conducted in accordance with National Emissions Standards for Hazardous Air Pollutants (NESHAP) guidelines.All suspect asbestos-containing materials (ACMs) shall be sampled to determine the presence or absence of asbestos prior to building demolition activities. If ACMs are found, a licensed asbestos abatement contractor shall be retained to abate the identified ACMs. Mitigation Measure HAZ-2: Prior to demolition, a comprehensive lead based paint (LBP) survey shall be conducted. If any LBP is identified,it shall be removed from the site in accordance with all applicable regulations,including California Division of Occupational Safety and Health(Cal/OSHA) Lead in Construction Standard, as included in California Code of Regulations,Title 8, Section 1532.1, during demolition activities. These requirements include employee training, employee air monitoring, and dust control. If lead paint is peeling,flaking or blistered, it shall be removed prior to demolition.It is assumed that such paint will become separated from the building La Palma Subdivision Project Final Initial Study/Mitigated Negative Declaration 6