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7C <br /> Page 40 <br /> 2. The water shafl be monitared to verify that the silt curtains contain turbidity to <br /> no more than 10 percent above ambient levels. <br /> 3. The contractor shall minimize dust through regular watering of bare ground <br /> and use Best Management Practices to prevent construction debris and loose <br /> soil from falling in#o the Bay. <br /> 4. The dredging contractor{i.e., for the flushing channel) shal! cantinuously <br /> monitor the quality of sediments being mobilized, and Best Management <br /> Practices will be empEoyed to prevent the re-suspens�on of contaminants in <br /> the Bay. <br /> 5. The dredging pracedure {i.e., for the�lushing channe() shali involve the use of <br /> a suction dredge that minimally disturbs ad}acen# sediments. Clamshell <br /> dredging shall not be used unless all the sediments have been previously <br /> determined to be free of pesticides, heavy metals, PCF's, and fossif fuef by- <br /> praducts. <br /> 6. 1n order to minimize hyciraacoustic shockwaves from pile driving, the <br /> con#ractar shall use a vibratory hammer to drive sheet pile and piles in the <br /> marinas. !n the event that a percussive pile-driving hammer is required for <br /> driving piles in the water, the contractor shall integrate an approved bubble <br /> curtain into#he pile-driving system. <br /> Alsa, implement Mitigafion 8-5 for the loss of approximately 9.50 acres of <br /> estuarine habitat. The City of Redwaod City shal! not issue a grading permit#or the praject untii <br /> the steelhead and chinaok salmon issues are resolved to the satisfaction of#he NQAA Fisheries <br /> and CDFG. Copies of written correspondence between the N�AA Fisheries and CDFG and the <br /> applicant shall be submitted to the City prior to issuance of a grading permit <br /> Findings: Implementation of these measures is feasible and would reduce these <br /> impacts to a less-than-signi�cant level. <br /> B. Essential Fish Habitat <br /> Potential Impact 8-2: The proposed project would fill approximately 9.50 acres <br /> of estuarine Essential Fish Habitat. Filling the bottom of the Bay wauld result in a loss of <br /> essential ben#hic habitat for many species of rockfish, flat fish, sharks, and rays. Filling the <br /> water column would adversely impact several federaJly managed species, including Pacific <br /> sardine and the northern anchovy. Construcfion activities could also result in increased water <br /> turbidity, contaminant release, noise, and underwater shock waves. These possible effec#s <br /> represent a pofenfially srgnificant rmpacf. <br /> Mitigation 8-2: The applicant shall implement Mifigation 8-9 above with respect <br /> to Essential Fish Habita#. <br /> Findings: This measure is feasible and would reduce the project's impacf on <br /> Essen#ial Fish Habitat#o a less-than-significant Ievel. <br /> Atty/Reso/Reso.1772 �g <br /> 121307 <br />