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<br />Soil Investigations for Data Collection in the Delta <br />Initial Study/Proposed Mitigated Negative Declaration iv <br />MM AES-1: <br />a. Each Impact Area will be returned to as close to pre-activity conditions as possible. <br /> <br />b. No building structures will be removed or disturbed. Soil investigation activities will <br />occur at a distance greater than 100 feet from residences and small business <br />operations. If fencing needs to be removed for access, it would be replaced in kind <br />after the work is completed. <br /> <br />c. No trees or vines will be removed during exploration activities; and only minor <br />disturbances to vegetation would occur during mobilization of equipment. This minor <br />disturbance may consist of mowing, removal of a few tree limbs, or trimming of <br />bushes for site access. However, if access requires removal of any vegetation, the <br />landowner would be consulted first to minimize the impact to both vegetation and the <br />landowner. <br /> <br />MM AES-2: <br />a. Navigational lighting will be used as needed for overwater work, but will meet the <br />standards required for waterway safety, and will not increase the existing ambient <br />lighting of the area in a substantial way. Any lighting used on barges or drill ships will <br />not exceed the standards of brightness for standard navigational safety <br />requirements. <br /> <br />b. All work will occur between sunrise and sunset. <br /> <br />MM AGR-1: <br />Any proposed soil investigation activities that occur on agricultural lands will be grouted <br />in accordance with ASTM standards to five feet below the surface. The final five feet of <br />topsoil will be replaced to return the Impact Area to as close to pre-activity conditions as <br />possible. <br />MM AIR-1: <br />a. Water all exposed surfaces two times daily. Exposed surfaces include, but are not <br />limited to soil piles, graded areas, unpaved parking areas, staging areas, and access <br />roads. <br /> <br />b. Cover or maintain at least six feet of free board space on haul trucks transporting <br />soil, sand, or other loose material on the site. Any haul trucks that would be traveling <br />along freeways or major roadways will be covered. <br /> <br />c. All operations shall limit or expeditiously remove the accumulation of mud or dirt <br />from adjacent public streets at the end of each workday. Use wet power vacuum <br />street sweepers to remove any visible track out mud or dirt onto adjacent public <br />roads as needed. Use of dry power sweeping and blower devices is prohibited. <br />