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, <br /> 1 <br /> III <br /> . <br /> ro <br /> . . <br /> Water Quality Certification <br /> October 10, 1990 <br /> Page 2 <br /> IN-WATER WORK: <br /> ( <br /> 1. All construction debris shall be properly disposed of on land in <br /> such a manner that it cannot enter into the waterway or cause water <br /> quality degradation to state waters. <br /> 2. Work in or near the waterway shall be- done so as to minimize <br /> turbidity, erosion, other water quality impacts, and stream bed <br /> deformation. <br /> 3. Care shall be taken to prevent any petroleum products, chemicals, or <br /> other toxic or deleterious materials from entering the water. <br /> 4. All piling or lumber treated with creosote or other protective <br /> material shall be completely dry before use in or near the waterway. <br /> UPLAND WORK: <br /> 1. The chip storage area of the project site shall be graded so as to <br /> direct all—stormwater runoff into the wastewater treatment system. <br /> 2. The wastewater treatment system of ponds and swales shall be <br /> designed and maintained to provide the optimum removal of <br /> contaminants from the water. This shall include cleaning and <br /> maintenance of the basins and swales as required. Vegetation in the <br /> swale shall be maintained to provide optimal bio-filtration of the <br /> water. If poor planting success or subsequent loss of vegetation <br /> occurs, replanting efforts shall be undertaken to restore the <br /> biofiltrating function of the swale in a timely manner. <br /> 3. Chips, debris and other materials removed from the wastewater <br /> treatment system shall be disposed of in an appropriate manner. <br /> 4. Chip loading and handling shall be accomplished with a minimum loss <br /> of chips onto the ground or water at the site. The system of <br /> conveyors shall be enclosed and maintained to prevent loss of chips <br /> or sawdust. The loading of barges shall be conducted using a <br /> telescoping spout or "stinger" which shall be operated to prevent <br /> loss of chips into the water to the maximum extent practicable. <br /> If you have any questions regarding this certification, please contact Russ <br /> McMillan of my staff at (206) 459-6814. <br /> • <br /> / <br /> i) <br /> / (77 <br /> - <br /> • <br />