7407 EVERGREEN WAY BOSTON CHICKEN 2018-01-01 MF Import

4.0 STCR�I�YATER OUALITY CONTROL Treatment of stormwater will be provided for runoff up to the 2-year storm event. AIU�ough deten6on is not required, a restrictor manhole has been designed to limit the rate of flow through the downstream oil/water separator and biofiltration swale. This will enhance treatmei t of — stormwater during mild rainfall inlensities. Excessive runoff would bypass ihe oil/water separator 2nd the bioswale through an overflow pipe W the ul6mate discharge point located near the northwest property cornec Within ihe appendix of the re!�ort are design comput�tions for the — oil/water separator vault as well as ihe biofiltra6on s�vale. 5.0 POINT OF DISCNARGE/DOWNSTREAM ANALYSIS The runoff from the proposed development will discharge at the site's nah:ral discharge locadon. 7 he proposed development will not alter the existing drainage course or divert stormwater runoff — onto or away from the downstream drainage system. Discharge runoff from the sitc will be directed to the public storm drainage conveyance system located within Ihe public right-of-way of Evergreen Way. Since this project will in effect reduce the runoff from ihis site, a P�rlher ;.nalysis — of the downstream dninage course is not necessary. Burglmuscn Consulting [nginccrs, Inc. Pdge 2 of 2 5184.tb2 �1SG/p.;/sdc�