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L I perennial vegetation and desert pavement; stabilize surface soil with dust palliative unless immediate construction is to continue; and use water or dust palliative to form crust on soil immediately following clearing/grubbing. (CCHD) ` — While clearing forms, use single stage pours where allowed;use water spray to clear forms; use sweeping and water spray to clear forms; use industrial shop vacuum to clear forms; and avoid use of high pressure air to blow soil and debris from the form. (CCHD) — During cut and fill activities, prewater with sprinklers or wobblers to '` allow time for penetration; prewater with water trucks or water pulls to allow time for penetration; dig a test hole to depth of cut to determine if soils are moist at depth and continue to prewater if not moist to depth of ` cut; use water truck/pull to water soils to depth of cut prior to subsequent cuts; and apply water or dust palliative to form crust on soil following fill and compaction. (CCHD) B-25 � cont. For large tracts of disturbed land, prevent access by fencing, ditches, vegetation, berms, or other barriers; install perimeter wind barriers 3 to ` 5 feet high with low porosity; plant perimeter vegetation early; and for long-term stabilization, stabilize disturbed soil with dust palliative or vegetation or pave or apply surface rock. (CCHD) In staging areas, limit size of area; apply water to surface soils where support equipment and vehicles are operated; limit vehicle speeds to L 15 mph; and limit ingress and egress points. (CCHD) — For stockpiles, maintain at optimum moisture content; remove material from downwind side; avoid steep sides or faces; and stabilize material following stockpile-related activity. (CCHD) — To prevent trackout, pave construction roadways as early as possible; 6. install gravel pads; install wheel shakers or wheel washers, and limit site access. (CCHD, SLOCAPCD) L — Where feasible, use bedliners in bottom-dumping haul vehicles. (Rule 403 Handbook) — Grade each phase separately, timed to coincide with construction phase or grade entire Project, but apply chemical stabilizers or ground cover to graded areas where construction phase begins more than 60 days after grading phase ends. (Rule 403 Handbook) — Following the addition of materials to, or the removal of materials from, the surface of outdoor storage piles, said piles shall be effectively L 17 L