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e STATE OF CALIFORNIA•DEPARTMENT OF TRANSPORTATION Page 2 of 2 STORMWATER SPECIAL PROVISIONS for MINIMAL or NO IMPACT(SWSP) TR-0400(Rev 05/2018) 15. CONCRETE EQUIPMENT: Concrete equipment must be pollutants into storm drain systems and receiving waters. Direct washed in a designated washing area in a way that does not runoff, including water from water line repair from the job site to contaminate soil,receiving waters,or storm drain systems. areas where it can infiltrate into the ground. Direct water from off- site sources around the job site or from contact with jobsite runoff. 16. EXISTING VEGETATION: Established existing vegetation is the best form of erosion control. Minimize disturbance to existing 24. PILE DRIVING: Keep spill kits and cleanup materials at pile vegetation. Damaged or removed vegetation must be replaced as driving locations. Park pile driving equipment over drip pans, directed by the State Representative. absorbent pads, or plastic sheeting with absorbent material, and away from stormwater run-on when not in use. 17. SOIL DISTURBANCE: Soil disturbing activities must be avoided during the wet weather season. If construction activities 25. DEWATERING: Dewatering consists of discharging during wet weather are allowed in your permit, all necessary accumulated storm water, groundwater, or surface water from erosion control and soil stabilization measures must be implemented excavations or temporary containment facilities. All dewatering in advance of soil disturbing activity. operations must comply with the latest Caltrans guidelines including the Field Guide for Construclion Site Deivatering. Contact State 18. SLOPE STABILIZATION AND SEDIMENT CONTROL: representative for approval of dewatering discharge by infiltration or Consider a certified expert in Erosion and Sediment control in cases evaporation,otherwise,any effluent discharged into a permitted storm where slopes are disturbed during construction. The Permittee is water system requires approval from the Regional Water Quality directed to comply with Section 13.5 Temporary Soil Stabilization and Control Board. Prior to the start of dewatering, the Permittee must Section 21 Erosion Control of Caltrans' Standard Specifications provide the State Representative with a dewatering and discharge during application of temporary soil stabilization measures to the soil work plan that complies with section 13-4.03G Dewatering, Water surface. Fiber rolls or silt fences may be required down slope until Pollution Control of Caltrans'Standard Specifications. Acopy ofthe permanent soil stabilization is established. Remove the accumulated Waste Discharge Permit and a copy of a valid WDID number issued sediment whenever the sediment accumulates to 1/3 of the linear by the Regional Board must be provided to the State representative. sediment barrier height. The Permittee must limit the use of plastic materials when more sustainable, environmentally friendly alternatives exist or when environmental regulations prohibit their use within the project. 19. STOCKPILES:Stockpiles containing aggregate and/or soil must be stored at least 100 feet from concentrated flows of storm water, drainage courses, and storm drain inlets if within a flood plain, otherwise at least 50 feet if outside the floodplain, and must be covered and protected with atemporary perimeter sediment barrier. Cold mix stockpiles must be stored on an impermeable surface and covered with 9 mil plastic to prevent contact with water. Minimize stockpiling of materials on the job site. Manage stockpiles by implementing the water pollution control practices in Section 13- 4.03C (3)Stockpile Management of the State of California standard specifications for construction. 20. DISCOVERY OF CONTAMINATION: The State Representative must be notified in case any unusual discoloration, odor,or texture of ground water,is found in excavated material or if abandoned, underground tanks, pipes, or buried debris are encountered. 21. SANITARY AND SEPTIC WASTE: Do not bury or discharge wastewater from a sanitary or septic system within the highway.Properly connected sewer facilities are free from leaks.With State Representative approval place portable sanitary facility at least 50 feet away from storm drains, receiving waters, and flow lines. Permittee must comply withlocal health agency provisions when using an on-site disposal system. 22. LIQUID WASTE: Prevent job site liquid waste from entering storm drain systems and receiving waters. Drilling slurries, grease or oil-free waste water or rinse water,dredging, wash water or rinse water running off a surface or other non-storm water liquids not covered under separate waste water permits must be held in structurally sound, leak-proof containers, such as portable bins or portable tanks. Store containers at least 50 feet away from moving vehicles and equipment.Liquid waste may require testing to determine hazardous material content prior to disposal. All measures must conform to section 13-4.03D (5) Liquid Waste, Water Pollution Control of Caltrans'Standard Specifications. 23. WATER CONTROL AND CONSERVATION: Manage water use in a way that will prevent erosion and the discharge of