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4.0 LIST OF MITIGATION MEASURES <br />1388 Bancroft Avenue Project City of San Leandro <br />Initial Study/Mitigated Negative Declaration November 2018 <br />4.0-4 <br />• Approximately 2 feet of undocumented clayey to well-graded sand fill was encountered below the surface. This loose fill shall be overexcavated and re-compacted within the proposed building footprint. Any undocumented <br />fills encountered during the demolition of the northern building basement <br />level should also be re-compacted prior to the placement of new fill. <br />• A portion of the proposed building would straddle deeper fill that would be required in order to fill the existing basement. Deeper fill transitions shall be <br />overexcavated at an inclination of 3:1 or flatter and rebuilt with engineered <br />fill to reduce the potential for differential movement beneath at-grade structures. <br />• The corrosion potential for buried metallic structures, such as metal pipes, is <br />considered moderate. Metal pipes installed as part of the project shall have <br />special protection incorporated. <br />Timing/Implementation: During grading and construction <br />Enforcement/Monitoring: City of San Leandro Community Development <br />Department; and Engineering and <br />Transportation Department <br />HAZARDS AND HAZARDOUS MATERIALS (SUBSECTION 3.8) <br />MM HAZ-1 Prior to demolition of existing structures on the project site, asbestos-containing <br />materials and lead-based paint surveys shall be conducted to determine the presence of hazardous building materials and results of those surveys shall be <br />provided prior to the issuance of demolition or building permits. Should <br />asbestos-containing materials, lead-based paint, or other hazardous <br />substance–containing building materials be identified, these materials shall be removed using proper techniques in compliance with all applicable state and <br />federal regulations, including the BAAQMD rule related to asbestos. <br />Timing/Implementation: Prior to issuance of building permits <br />Enforcement/Monitoring: City of San Leandro Community Development Department <br />NOISE (SUBSECTION 3.12) <br />MM NOI-1 To prevent damage to off-site structures, during construction activities, the project applicant and/or its contractor shall ensure compliance with, and the <br />City shall note on grading and building permits: Vibratory rollers shall not be <br />used in dynamic mode (i.e., rolling motion only with no vibration) within 25 feet <br />of any existing off-site structure. Other vibratory compaction methods such as plate compactors would be acceptable. <br />Timing/Implementation: During grading and excavation <br />Enforcement/Monitoring: City of San Leandro Community Development <br />Department