b'LT ENGINEERINGCATALOGAccess CoverControl Manhole Stormwater QualityDebris ScreenOutletCoalescing Media PackEffluent Untreated StormwaterInterceptorSYSTEM COMPONENTS OPERATIONThe StormTrooper shall consist of a control manholeThe function of the StormTrooper stormwater interceptor connected to a separator unit to remove debris (TSS) andmodel SWST is to intercept free oils/solids and retain them hydrocarbons from stormwater.for periodic removal. The StormTrooper interceptor is designed to treat a finite amount of stormwater, typically The Control Manhole, shall tie directly into the stormsized for the initial flow rate of a storm event. Most studies sewer line by means of a connection as specified inhave shown that the pollutants are found in this first-flush section ASTM C923.The control manhole shall contain stormwater discharge.a cast weir wall to divert flow through the separator unit for treatment of the first flush. The weir wall shall have Stormwater runoff can range from low to very high flow a trash screen attached to retain large debris when therates. A high flow rate can be detrimental to a stormwater unit is under standard flow conditions. interceptor in that excessive flows tend to scour (stir up)the existing retained pollutants left from the previous storm The Separator Unit, shall be connected to the controlevent. The StormTrooper controls high flow rates by utilizing manhole by means of a flexible resilient rubber boot.a control manhole. The control manhole is engineered The unit shall maintain a minimum separation of to divert the design flow through the interceptor while 36 inches between the Control Manhole and thebypassing high flows to the storm sewer.Separator Unit.Low Flow: Stormwater runoff flows into the inlet of the The Separator Unit shall contain a prefabricated corrugatedcontrol manhole.Stormwater is then diverted from the plate for intermittent and variable flows of water, oil or anybypass weir to the interceptor. The stormwater debris, combination of non-emulsified oil-water mixtures rangingoils, and sediments are filtered and separated. The flow from zero-flow up to 100 percent of the maximum hydraulicis discharged via the outlet of the control manhole to the capacity. This will allow the separator unit to maintain anMunicipal Separate Storm Sewer System (MS4).acceptable water effluent.High Flow: Stormwater runoff flows into the inlet of the control manhole. During high flow conditions, stormwater [email protected]|888-611-7275|WWW.PARKUSA.COM 79'