6003 23RD DR W 2018-01-01 MF Import

i �/ v�/ �vvV Iv IL � l1I� '��JCJiV��L I�f� �V/ VLtI i 14, If suitable soils ex:st on the site, surface storm water infiltration systems (e.g., pervious pavers or surface ponding arEas and/or s�vales) mat�be used to hydraulically disconnect pavement. From a storm water trea[ment:tandpoint, for a pa��ement area to be considered hydraulically disconnected, storm water runoff from at least the 6-month, 24•hour storm must be fully retained and�or infiltrated. 15. The options for treatment of runoff from hydraul:cally-connected pavemen[ are; a.) an infiltration basin, if suitable soils exist on the site b,) a H�etpond �,) a constructed w�tland d.) a Storm�+�atet360 StormFilter, with pretreatment e.) an alternative storm «�ater treatmant technology deemed, by the City of Everett, to be technically equivalent to the above options I 6. Storm water detention is renuired when �,U00 square feet or more of hydraulically-connected impervious area is created by a project. l7, If suitable soils e�ist on the site, undergtound infiltration systems (e.g., infiltrstion Venchesj or surfac: s[orm ��ater infil[ration systems(e.g., splash blocks, pervious pavers, or surface ponding areas and/or s�vales) may be used to avoid creating hydraulicall}•-connected impenious azea from a storm water detention standpoint. Section 3-2.2 of the City's Stormwater yianagement Manual lists site and desi2n crit:rin tl�at must be tnet. 18. From a storm a�ater detention standpoint, for an impzrvious area to bz considered hydraulically disconnected, storm water runoff frum the 100-year, 24-hour storm must be fully retained and/or infihrated— «-ithout resuhing in significant potential for adverse efiecu from the infilcrated water (such as slone saturation or migration to crawlspaces and/or basemencs). However, if the�n-site soils cannot support full infiltrution of the 100-yesr, '_'4-hour stonn, partial infiltration may still be feasible to meet allo�+�able storm water release requirements. 19. All storm water facilities shall be designed in accordance �x�ith applicable City standards and/or de�ign policies. ''0, This site contains portions of more than one drainage basin. The amount of area draining to the creek in each basin after development shall not bz greater than the area draining to each creek bef'ure drvelopment. Z I. Table 1-�,7 of the City's Storm�vatzr bfanagement Manual contains an eaor in the "n" values for shee� flow. The column of values should read "0.011, 0.05. 0.15; 0.24, 0,41, 0.13, 0.40, 0,80." 22. A cicy standard 307 dri�•eway must be installed for the entrance to the project, 23. A looped ��atzr msin sys[em must be installed from the existing main at the south property line to ihe existing main in 23rd Drive R'est at the north end of the project, ,/da�