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KITTITAS COUNTY SOLID WASTE ON-CALL <br />CLE ELUM TRANSFER STATION FRONT ENTRANCE DESIGN <br />TEMPORARY EROSION AND PW\JA\KITTCO02\ENTRANCE <br />SEDIMENT CONTROL JUNE 2023 <br />01 57 13 - 8 ©COPYRIGHT 2023 JACOBS <br />b. Process Water: <br />1) Do not discharge high pH process water or wastewater (non- <br />stormwater) that is generated onsite, including water <br />generated during concrete grinding, rubblizing, washout, <br />and hydro demolition activities, to surface waters, including <br />wetlands. Water may be infiltrated on approval of Engineer. <br />2) Treat all water generated onsite from construction or <br />washing activities that is more turbid than site runoff <br />separately until turbidity is the same or less than site runoff, <br />and then it may be combined with site runoff and treated as <br />described above. Water may be infiltrated upon approval of <br />Engineer. <br />c. Offsite Water: Prior to disruption of normal watercourse, intercept <br />offsite stormwater and pipe it either through or around the Project <br />Site. This water shall not be combined with onsite stormwater. <br />Discharge offsite water at its preconstruction outfall point <br />preventing an increase in erosion below the site. Submit proposed <br />method for performing this Work for Engineer’s approval. <br />J.Dispersion/Infiltration: Convey water only to dispersion or infiltration areas <br />designated in the SWPPP Plan or to sites approved by Engineer. Water shall <br />be conveyed to designated dispersion areas at a rate such that, when runoff <br />leaves the area and enters surrounding drainage, turbidity standards are <br />achieved. Convey water to designated infiltration areas at a rate that does not <br />produce surface runoff. <br />K. Pollution Control: <br />1. Use BMPs to prevent or minimize stormwater exposure to pollutants <br />from spills; vehicle and equipment fueling, maintenance, and storage; <br />other cleaning and maintenance activities; and waste handling activities. <br />These pollutants include fuel, hydraulic fluid, and other oils from <br />vehicles and machinery, as well as debris, leftover paints, solvents, and <br />glues from construction operations. Implement the following BMPs <br />when applicable: <br />a. Written spill prevention and response procedures. <br />b. Employee training on spill prevention and proper disposal <br />procedures. <br />c. Spill kits in all vehicles. <br />d. Regular maintenance schedule for vehicles and machinery. <br />e. Material delivery and storage controls. <br />f.Training and signage. <br />g. Covered storage areas for waste and supplies.