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In addition to biofiltration, a wet pond is required per City of Everett criteria for this site. This wet <br />pond consists of dead storage. For the purpose of our site, 95 percent of the 6-month/24-hour storm <br />volume will be located as dead storage within the detention vault, with the remshft 15 percent of <br />dead storage located in the wet pond. The volume of runoff from a 6-month/24-hour storm under <br />developed conditions is 2,107 cubic feet. Fifteen percent (15 %) of that is 316 cubic feet, which will <br />be located in a wet pond located in series with the bioswale downstream from detention. The <br />maximum average depth of water in the wet pond shall be 2 feet. <br />4.0 CONVEYANCE <br />See Appendix 'B' for the pipe conveyance calculations, basin map and biofiltration calculations. All <br />pipes were sized to pass the 25-year storm. <br />-3- 2918.011IA/sMl <br />