b'STORMWATERCATALOGDESIGN CONSIDERATIONSThe separator tank is designed to conform to ASTM C913cleansed the catchment area. The stormwater containing Standard Specification for Precast Concrete Water andthis high initial pollutant load will be treated with the Wastewater Structures. The weight of the soil above shall StormTrooper stormwater interceptor. Most studies have be capable of withstanding a live load equal to an AASHTOfound that significant concentration pollutant loads are HS20 or HL93 highway loading, using full impact load, retained when at least 90% of the storm events are treated.or 300 psf applied to the top slab.To determine the treated flow rate required of the All exterior walls of the tank shall be designed for anstormwater interceptor, estimate the flow rate of the first equivalent fluid pressure of 85 lbs/ft2. Structure shall beflush. An accepted practice is to calculate the drainage designed to resist buoyant uplift forces with a factor ofusing the rational method, employed to estimate design safety not less than 1.10. The top of the pressure diagrampeak discharge from a small watershed or the total shall be assumed to originate at finished ground level.acreage of a development. Additional lateral pressure from approaching truck wheels and/or 300 psf surcharge shall be considered inThe StormTrooper system should be located downstream accordance with AASHTO Standard Specification forof stormwater runoff for maximum performancetypically Highway Bridges. the final conveyance before stormwater exits the property. The stormwater interceptor is buried, allowing for gravitySIZING flow of the runoff. The interceptor should be installed and located so that it will be easily accessible for inspection, Under the Storm Water Phase II Final Rule, urbanized areascleaning, and removal of separated pollutants. There where construction disturbs one acre or more of land mustshould be an adequate number of interceptor access develop water quality controls. Forty states have developedopenings to permit cleaning of all compartments.numeric performance and/or design standards to controlAll access manholes should extend to grade.post construction stormwater discharges. Some require water quality system design that will reduce TSS loadingsThe StormTrooper interceptor is designed for stormwater by an average of 80% annually. A professional engineerrunoff from typical commercial applications where light must develop a best management practice (BMP) plan toamounts of oil & contaminants are found (e.g., parking lots). obtain a National Pollutant Discharge Elimination SystemFor industrial applications where excessive pollutants are (NPDES) number from permitting authorities. Typically, apresent, the StormTrooper EX Extra-Duty (over 1000 ppm)designer utilizes site specific runoff coefficients and rainfallis recommended.intensity rates to develop the hydrology calculations and structural control systems that become a Storm WaterRECTANGULAR DESIGNSQuality Management Plan (SWQMP) or BMP. MODEL NO GALLONS GPM CFSUsing the First Flush Principle has become the acceptableSWST-10 1,000 650 1.45means of determining treated stormwater flow rates. TheSWST-15 1,500 875 1.95initial runoff flow is recognized to be more polluted than the stormwater that runs off later, after the rainfall hasSWST-20 2,000 1,125 2.51SWST-25 2,500 1,375 3.06CYLINDRICAL DESIGNS SWST-30 3,000 1,600 3.56MODEL NO GALLONS GPM CFS SWST-35 3,500 1,775 3.95SWST-05C 500 300 0.67 SWST-40 4,000 1,950 4.34SWST-06C 600 400 0.89 SWST-45 4,500 2,150 4.79SWST-08C 800 500 1.11 SWST-50 5,000 2,350 5.23SWST-10C 1,000 650 1.45 SWST-60 6,000 2,675 5.96SWST-15C 1,500 875 1.95 SWST-70 7,000 3,000 6.68SWST-20C 2,000 1,125 2.51 SWST-80 8,000 3,325 7.41SWST-25C 2,500 1,375 3.06 SWST-90 9,000 3,625 8.07SWST-30C 3,000 1,600 3.56 SWST-100 10,000 3,900 8.69SWST-35C 3,500 1,775 3.95 SWST-110 11,000 4,175 9.30SWST-40C 4,000 1,950 4.34 SWST-120 12,000 4,425 9.86SWST-45C 4,500 2,150 4.79 SWST-130 13,000 4,725 10.52SWST-50C 5,000 2,350 5.23 SWST-140 14,000 4,950 11.02SWST-60C 6,000 2,675 5.96 SWST-150 15,000 5,200 11.5840 INFO@PARKUSA.COM|888-611-7275|WWW.PARKUSA.COM'