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STRUCTURAL STORM WATER TREATMENT SYSTEM <br />G. Casting for manhole frames and covers shall be vented and in accordance <br />with the Miscellaneous Metals Section of these Specifications. <br />H. All sections shall be cured by an approved method. Sections shall not be <br />shipped until the concrete has attained a compressive strength of 4,000 psi or <br />until 5 days after fabrication and/or repair, whichever is the longer. <br />2.02 HYDRAULIC DESIGN <br />The specified stormwater treatment system shall be hydraulically designed for <br />the specific site as a bypass system in which it will be installed. The calibration <br />of the specified system shall account for a peak flow rate of 1.3 cfs that <br />corresponds with predetermined, regional rainfall data to maintain peak removal <br />efficiencies and to not cause upstream flooding or pooling of storm waters. <br />2.03 MANUFACTURER <br />The structural stormwater treatment system shall, with letterhead, certified third <br />party independent testing, supply the appropriate (sediments, free oils and spill <br />control) range of minimal empirical data (see "example 1 ") and the protocol <br />description by which any and all removal efficiency claim (`s) are made. The Cit <br />of Eugene, Oregon reserves the right to reject any technology that fails to <br />physically substantiate any and all claims whether advertised or implied to the <br />satisfaction of basic testing variables, as in "example 1:" <br />example 1: Test data range: <br />proposed technology /system? <br />Cnlirlc rcmrnial VP_S I--I r1~ ^ <br />Test ~Nominal ~ Introduction Sediment Test Sediment Sediment Sediment <br /> Gradation Flowrate <br /># (microns) L/s) Input Duration Feed Recovered Trapped <br /> Rate <br /> Specific (gpm, (g) (min) (mg/L) (g) (%) <br /> ravit L/s... <br />1 ini iirl hvrlrnrarhnn rPmwal VES ^ n0 ^ <br />Test Oil type Introduction Influent Individual Influent Effluent oil Individual <br /> ~ Flowrate oil Test oil unit <br /># Supply Input @ Dosing Recovered Retention <br /> MSDS constant Rate time <br /> flowrate <br /> Specific (gpm, (mg/L) (min) (mg/L) (mg/L) (min) <br /> ravit L/s... not %°s not %'s not %'s <br />C:\Documents and Settings\cewaddc\Local Settings\Temporary Internet <br />Files\OLKDB\FINALWATERQUALITY.doc PAGE 3 <br />