ARCHIVED REPORTS_DRAFT ENVIRONMENTAL IMPACT REPORT

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According to the CDMG,the project area is classified as MRZ-3, an area where the significance of mineral deposits cannot be evaluated from existing data. The closest sand and gravel mines in the vicinity of the project area are both owned by Brown Sand,Inc. and have recently ceased operations: the Oakwood Lake Pit located on Woodward Avenue in Manteca, and the Mossdale Ranch site located in Lathrop, approximately 2 miles west of the project area. REGULATORY SETTING Federal Earthquake Hazards Reduction Act In October 1997,the U.S. Congress passed the Earthquake Hazards Reduction Act to"reduce the risks to life and property from future earthquakes in the United States through the establishment and maintenance of an effective earthquake hazards and reduction program."To accomplish this,the Act established the National Earthquake Hazards Reduction Program(NEHRP). This program was significantly amended in November 1990 by the National Earthquake Hazards Reduction Program Act(NEHRPA),by refining the description of the agency responsibilities,program goals, and objectives. NEHRP's mission includes improved understanding, characterization, and prediction of hazards and vulnerabilities; improved building codes and land use practices;risk reduction through post-earthquake investigations and education; development and improvement of design and construction techniques; improved mitigation capacity; and accelerated application of research results. The NEHRPA designates the Federal Emergency Management Agency(FEMA)as the lead agency of the program and assigns it several planning, coordinating,and reporting responsibilities. Other NEHRPA agencies include the National Institute of Standards and Technology,National Science Foundation, and U.S. Geological Survey. California Building Standards Code The State of California provides minimum standard for building design through the California Building Standards Code(California Code of Regulations, Title 24). Where no other building codes apply, Chapter 29 regulates excavation, foundations, and retaining walls. The California Building Standards Code(CBC)also applies to building design and construction in the state and is based on the federal Uniform Building Code(UBC)used widely throughout the country(generally adopted on a state-by-state or district-by-district basis). The CBC has been modified for California conditions with numerous more detailed and/or more stringent regulations. The State earthquake protection law(California Health and Safety Code 19100 et seq.)requires that structures be designed to resist stresses produced by lateral forces caused by wind and earthquakes. Specific minimum seismic safety and structural design requirements are set forth in Chapter 16 of the CBC. The CBC identifies seismic factors that must be considered in structural design. Chapter 18 of the CBC regulates the excavation of foundations and retaining walls,and Appendix Chapter A33 regulates grading activities, including drainage and erosion control, and construction on unstable soils, such as expansive soils and liquefaction areas. California Seismic Hazards Mapping Act The California Seismic Hazards Mapping Act of 1990(California Public Resources Code Section 2690-2699.6) addresses seismic hazards other than surface rupture, such as liquefaction and induced landslides. The Seismic Hazards Mapping Act specifies that the lead agency for a project may withhold development permits until geologic or soils investigations are conducted for specific sites and mitigation measures are incorporated into plans to reduce hazards associated with seismicity and unstable soils. Manteca WQCF and Collection System Master Plans EIR EDAW City of Manteca 4-7.13 Geology,Soils,and Seismicity