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Facts in Support of Finding The City of Pleasanton has adopted the following measures which will reduce potential impacts related to the generation of household hazardous waste to a less-than-significant level: Mitigation Measure 4.12-1: The project sponsor, working with the City of Pleasanton and Alameda County Household Hazardous Waste Program, shall implement a Buyer Education Program for Household Hazardous Waste, developing materials to educate buyers about the identification of household hazardous wastes, appropriate disposal methods, and available drop off facilities. At a minimum, the materials shall provide a list of example household hazardous wastes, discuss the environmental impacts of improper disposal, and provide a list of available drop off facilities. The educational materials shall be provided to the buyer at the time of purchase. Significant Impact Impact 4.12-2: Excavation for the proposed project could potentially encounter previously identified soil contamination, potentially exposing workers and the public to hazardous materials, or resulting in a release to the environment during construction. Finding Changes or alterations have been required in, or incorporated into, the project which mitigate or avoid the significant effects on the environment. Facts in Support of Finding The City of Pleasanton has adopted the following measures which will reduce potential impacts related to soil contamination to a less-than-significant level: Mitigation Measure 4.12-2: Contingency Plan. The project sponsor shall require the construction contractor(s) to observe for previously unidentified hazardous materials and have a contingency plan for sampling and analysis of potential hazardous materials in soil. If any hazardous materials are identified, the contractor(s) shall be required to prepare a Health and Safety Plan, conduct sampling to assess the chemicals present, and identify appropriate disposal methods. Evidence of potential contamination includes soil discoloration, suspicious odors, the presence of USTs, or the presence of buried building materials. The project sponsor shall also be required to notify the regulatory agencies if the concentration of any chemical exceeds its respective screening level. The assigned lead agency shall oversee all aspects of the site investigation and remedial action and determine the adequacy of the site investigation and remediation activities at the site. Significant Impact Impact 4.12-3: Demolition of the existing ranch structures at the project site could potentially expose workers and the public to hazardous building materials including asbestos-containing materials, lead- based paint, PCBs, DEHP, and mercury, or result in a release of these materials to the environment during construction. Finding Changes or alterations have been required in, or incorporated into, the project which mitigate or avoid the significant effects on the environment. LUND RANCH II(PUD-25)RESIDENTIAL PROJECT 19 FINDINGS