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f <br /> Page3of3 <br /> . O&M Manual: <br /> 1. Please use the maintenance checklists in the 2014 SWMM instead of the ones from the <br /> 2010 manual. <br /> Manual updated. <br /> (/2. Include manufacturer's O&M procedures for the ChamberMaxx and Filterra systems. <br /> Completed. <br /> 3. Add manufacturer's contact info to the Resource Listing section. Completed. <br /> � Plan Comments: <br /> X1. CB-9 should have a solid lid since it is downstream of the treatment device. Completed <br /> ▪ Provisions should be made for observation and cleaning of the detention facility. At a <br /> minimum please provide observation ports at the north end of both the first and last rows <br /> of arches. Consider making these two rows containment rows per Contech's specs. <br /> Observation ports added to the end rows. An isolated row was not required by Contech. <br /> Revised the detail for the 54" Control Structure to indicate a 0.5" minimum orifice size. <br /> Also, the callout for the notch should read 6.7" Hx0.1"W. detail corrected. <br /> . Provide a trench dam between SDMH 1 and the existing CB-4 to ensure that water from d / <br /> the detention facility doesn't flow off the site through the pipe bedding. A section of <br /> compacted native material for the full trench depth should be adequate. <br /> Trench dam note added to sheet c-8 <br /> Sincerely, <br /> Patrick Harron & Associates, LLC <br /> i,\.,/: <br /> Chris Cramer, PE <br /> P:\2016\16153 ESF&Retail everett\P&E\Text\Correspondence\Everett 2st review.doc <br />