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be routed to underground 6' diameter pipes located under the private drive. <br />There will be 2' of dead storage in the bottom of each pipe to provide water <br />quality. Storm drainage calculations were derived using the VJaterworlcs program <br />by Engenious Systems, Inc., with rainfall intensities taken from isobaric charts for <br />Snohomish County. <br />(� <br />