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City of Pleasanton—Hidden Canyon Residences and Preserve Geology, Soils, and Seismicity Draft EIR 3.6-18 FirstCarbon Solutions https://adecinnovations.sharepoint.com/sites/PublicationsSite/Shared Documents/Publications/Client (PN-JN)/2148/21480016/EIR/3 - Draft EIR/21480016 Sec03-06 Geology.docx Practices (BMPs) that will be used to control, prevent, remove, or reduce stormwater pollution from the site, including sediment from erosion. Excavation Rules and Regulations Title 29 in the Code of Federal Regulations, Part 1926, Subpart P contains rules and regulations for site excavations. Subpart P applies to all open excavations made in the earth’s surface. Specific excavation requirements regulate surface encumbrances, underground installations, access and egress, hazardous atmospheres, stability of structures, protection of employees from loose rock or soil, inspections, and walkthroughs. Paleontological Resources Preservation Act The Paleontological Resources Preservation Act of 2002 codifies the generally accepted practice of limited vertebrate fossil collection and limited collection of other rare and scientifically significant fossils by qualified researchers. Researchers must obtain a permit from the appropriate State or federal agency and agree to donate any materials recovered to recognized public institutions where they would remain accessible to the public and other researchers. Society of Vertebrate Paleontology Guidelines The SVP is a national scientific organization of professional vertebrate Paleontologist that established Standard Guidelines for assessing the potential impacts that projects may have on paleontological resources and provides measures to mitigate those impacts that can be applied to both private and public lands under local, State, and federal agencies. The SVP classifies rock units based on paleontological potential as either having high, undetermined, low, or no potential for uncovering significant or abundant paleontological resources that may provide new scientific information for a variety of disciplines and are provided below: • High Potential–Rock units which may contain vertebrate or significant invertebrate, plant, or trace fossils with datable organic remains, or rock units that may contain new vertebrate deposits, traces, or trackways. Rock units of high potential are dated to be middle-Holocene or older which include sedimentary formations such as fine-grained fluvial sandstones, argillaceous and carbonate-rich paleosols, and fine-grained marine sandstones, some volcaniclastic formations, and some low-grade metamorphic rocks. • Undetermined Potential–Rock units with little information available related to their paleontological content, depositional environment, and geologic age. A field survey by a qualified professional Paleontologist is necessary to determine whether these rock units have high or low potential before a paleontological resource impact mitigation program can be developed. • Rock units that only preserve fossils in rare circumstances and are poorly represented by fossil specimens in institutional collections such as basalt flows and recent colluvium. • No Potential–Rock units that are not associated with containing fossils such as high-grade metamorphic rocks and plutonic igneous rocks.