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Exhibit A-1 Notification #1600-2013-0356•R3 Streambed Alteration Agreement Page 14 of 23 Pumps, generators, compressors and welders, located within or adjacent to the creek shall be positioned over drip -pans. 2.39 Maintenance of Vehicles. Any equipment or vehicles driven and/or operated adjacent to the creek areas shall be checked and maintained daily to prevent leaks of materials that if introduced to water could be deleterious to aquatic life, wildlife or riparian habitat. Vehicles must be moved away 150 feet from the stream prior to refueling and lubrication. 2.40 Hazardous Materials. Any hazardous or toxic materials that could be deleterious to aquatic life that could be washed into state waters or its tributaries shall be contained in water tight containers or removed from the project site. 2.41 Debris and Waste Disposal. Permittee/ contractor shall not dump any litter or construction debris within the project area. All such debris and waste shall be picked up daily and properly disposed of at an appropriate site. 2.42 Tree Replacement. If trees need to be removed for routine maintenance activities and removal is approved by CDFW, trees shall be replaced at the following ratios (replacement trees to removed trees): Oaks — 6:1 ratio For native trees other than oaks - 3:1 ratio Non-native trees — 2:1 ratio. Replacement trees shall consist of 5 -gallon saplings, stakes, or other suitable nursery stock and shall be native species adapted to the lighting, soil and hydrological conditions at the replanting site. If replanting within the work area is infeasible due to slope steepness or other physical constraints, replacement trees may be planted at an alternate location along the stream corridor. Trees shall be replaced by December 31 of the year impacts occur in a location that is not subject to future maintenance or construction work. Permittee shall contact CDFW a minimum of 30 days prior to replanting work for review and written approval of the replanting site. 2.43 Re -vegetation Survivorship and Monitoring. To ensure a successful re -vegetation effort, all plants shall be monitored and maintained as necessary for eight (8) years. The following success criteria shall apply: