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The fo�lowing information regarding the oil/water <br />separator(sj muat be aubmitted for review and approval: <br />1) design inlet capacity calculations <br />2) orifice sizing calculations <br />3) oil/water separator sizinq calculations <br />4) bypass sizing calculations <br />5) copy of site plan showing the contributing area <br />veaetated ewalea: <br />Current City atandards call for vegetated swales to be <br />designed for the 2 year, 24 hour storm peak discharqe, with <br />higher flows diverted around the swale. If possible, the <br />swales 6hould be desiqned with a bypass aystem. The ewale <br />ehould then be designed per the following criteria for the <br />year, 24-hour storm: <br />"n" = 0.12 <br />max velocity = 1.5 feet per second <br />max. depth = 0.5 feet <br />If diversion is not feasible, the following additional <br />design criteria will apply for Lhe 25 year, 24-hour storm: <br />"n" = 0.035 <br />max velocity = 4.0 feet per second <br />max. depth = 1.o feet <br />The entire contributinq area must be use3 in calculating the <br />cross-sectional area af the swale. Only the site's paved <br />area must be used in determining the required lenqth of <br />swale. The portion of the swale passinq throuc:,� the creek <br />buffer cannot count towards the required length of swale. <br />The following information regarding the veyetated swale must <br />be submitted for review and approval: <br />1) <br />2) <br />3) <br />4j <br />5) <br />design flow calculation <br />velocity and flow depth calculations <br />bypass sizing calculations <br />copy oc site plan showing the contributing area <br />calculation of the length of swale required for <br />each drainage area <br />