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DESIGN REQUEST — MODULAR WETLAND SYSTEM - LINEAR <br /> Fill out the information below.This will assist us in providing you with detailed sizing,drawings&pricing. <br /> 1. Project Name: Seaway Transit Center <br /> 2.Project State & City: WA& Everett <br /> 3. Unit ID (if several units are on same project): <br /> 4. Your Name: Colin Paulsen <br /> 5. Your Contact Email/Phone#: CPaulsen@perteet.com/425.252.7700 <br /> 6. Desired Date to Receive Sizing/Drawings/Pricing: 06/27/2016 <br /> 7. Configuration: Standard(open vegetated planter-depth limited)n Underground(no plants-full concretetop)n <br /> NOTE:Some regulators will only accept units with vegetated open planters to meet their definition of biofiltration. <br /> 8.Loading Requirements: Parkways Indirect TrafficP] Direct Traffics Other <br /> 8a. If Other Please List Details (i.e.HS25): <br /> NOTE:Standard units have parkway rated manholes and/or hatches. Underground configurations can have traffic rated manholes/hatches by <br /> request All will be bolt&pull style. Hinged hatches are available per request but will add cost Standard units require irrigation and must be <br /> placed in a landscape area. <br /> 9. Runoff Entry Method: Piped Flow Built-In Curb Inlet❑ Built-In Grate Inlet❑ <br /> NOTE:Units may have only piped flow or a combination of piped flow and a grate or curb inlet. Units may be able to accept <br /> multiple inflow pipes.Size of pipe is limited based upon the size of the unit <br /> 10. Water Quality Flow Rate: 0.17 CFS (Dependent on local regulations)OR <br /> 10a. Water Quality Volume: CU FT(Dependent on local regulations)OR <br /> 10b. Drainage Area(acres)& Impervious Coefficient: not required-flow rate provided <br /> NOTE:Units may be sized for either the water quality flow or water quality volume. For water quality volume a pre-detention is required. <br /> For areas of the country where flow based design is desired but local regulations do not offer a method to calculate water quality flow please <br /> provide the drainage area(acres)and the impervious coefficient Our engineering team will determine the necessary size required based upon <br /> local rainfall patterns to treat 90A of storm events. <br /> 11. Internal Bypass Desired: Yes No❑ <br /> 11b. Peak Flow Rate(if internal bypass desired): 0.31 CFS (Dependent on local regulations) <br /> NOTE:Side-by-side orientation units have the option of internal bypass.End-to-end units do not have an internal bypass option.Internal <br /> bypass needs to be used with caution and a hydraulic assessment is required for each unit including running the HGL calculations over the <br /> bypass weir during peak flow and comparing this to FS elevations of the units and all upstream catch basins.For a standard height unit(4.13 <br /> ft)the water level must build to 3.4 ft above invert of outflow pipe to treat listed flow capacity on sizing sheet. Shallower and deeper units are <br /> available.Weir can be set lower to accommodate higher bypass flows and lower the associated HGL but will reduce flow capacity of the unit. <br /> Please contact manufacturer for calculations and assistance.Other external bypass configurations available such as an external diversions <br /> structure,secondary catch basin,or DVERT trough. <br /> 12. Finish Grade Elevation (FS,TC,TG): 569.95 <br /> 13.Inlet Pipe Invert Elevation (if applicable): 563.80 <br /> 13a.Inlet Pipe Diameter/Type(i.e.8"/PVC): 8"PVC <br /> 14. Outlet Pipe Invert Elevation: 562.46 <br /> 14a. Outlet Pipe Diameter/Type(i.e.12"/RCP): 8"PVC <br /> NOTE:For flow based design at least 16"of fall required between invert in and invert out. For volume based design at <br /> least 6"of fall required between invert in and invert out for hydraulically connected pre-detention. <br /> 15. Ground Water Elevation (if applicable): <br /> 16. Corrosive Soil Conditions (if applicable): <br /> Please email to us: info@modularwetlands.com MODULAR <br /> Any questions, contact: (866) 566-3938 \WETLANDS <br />