Reso PC17-06 0027 PC Reso 612 Jefferson

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3. Diesel -powered generators or air compressors shall not be used on-site for more than two days. [COA][HUD EA] 63. Buried Archaeological Materials — If buried materials are encountered, all soil disturbing work should be halted at the location of any discovery until a qualified archaeologist completes a significance evaluation of the find(s) pursuant to Section 106 of the National Historic Preservation Act (36CFR60.4). Prehistoric archaeological site indicators expected within the general area include: chipped chert and obsidian tools and tool manufacture waste flakes; grinding and hammering implements that look like fist -size, river -tumbled stones; and for some rare sites, locally darkened soil that generally contains abundant archaeological specimens. Historical remains expected in the general area commonly include items of ceramic, glass, and metal. Features that might be present include structure remains (e.g., cabins or their foundations) and pits containing historical artifacts. [COA][HUD EA] 64. Historic Properties of Religious and Cultural Significance - If previously unknown below ground historic properties of religious and cultural significance are discovered during construction, excavation in the area of the resources must immediately stop until tribal consultation can occur. The County must notify the Advisory Council on Historic Preservation and the [State Historic Preservation Officer] SHPO within 48 hours of the discovery. [See 36 CFR 800.13(b)] The County must also contact the identified federally designated tribes and reenter consultation. [COA][HUD EA] 65. Human Remains - In the event that human skeletal remains are uncovered at the project site during construction or ground -breaking activities, all work shall immediately halt and the San Mateo County Coroner shall be contacted to evaluate the remains, and shall follow the procedures and protocols pursuant to Section 15064.5 (e)(1) of the CEQA Guidelines. If the County Coroner determines that the remains are Native American, the County shall contact the California Native American Heritage Commission (NAHC), pursuant to subdivision (c) of Section 7050.5 of the Health and Safety Code, and all excavation and site preparation activities shall cease within a 50 -foot radius of the find until appropriate arrangements are made. If the agencies determine that avoidance is not feasible, then an alternative plan shall be prepared with specific steps and timeframe required to resume construction activities. Monitoring, data recovery, determination of significance and avoidance measures (if applicable) shall be completed expeditiously. [COA][HUD EA] 66. Geotechnical Investigation — Follow all recommendations outlined in the Geotechnical Investigation prepared for the project by Murray Engineers, Inc., dated June 2014. [COA][HUD EA] 67. Water Quality Protection Measures — The following water quality protection measures shall be carried out during the course construction: Store, handle, and dispose of construction materials and wastes properly, so as to prevent their contact with storm water. ATfY/RESO.0027/PC RESO 612 JEFFERSON REV: 03-21-17 PR Page 19 of 22