BaySaver Technologies BayFilter™ using Enhanced Media Cartridges

Conditions of use

1. All configuration options for the BayFilter Enhanced Media Cartridges (EMC) are approved for Total Suspended Solids (TSS) removal. Selection of a specific configuration is the responsibility of the project designer. 
2. Use of a BayFilter EMC does not exempt a project or site from required flow control requirements, operations and maintenance requirements, or other applicable requirements of the Stormwater Management Manual.
3. For use in the public right-of-way, the following conditions must be met: 
   • Units must meet City of Portland street design requirements, including but not limited to H-20 vehicle load rating, non-slip surface, and American with Disabilities Act tolerances specific to surface grates or vault lids.
   • The Operations & Maintenance Plan must call for an assessment during the two-year warranty period of project-specific maintenance requirements and frequencies
4. Providers certified by BaySaver Technologies should be utilized for activation, inspection and maintenance of the system, unless otherwise trained and certified by the manufacturer. 
    

Project designer responsibilities

1. Ensuring that the Conditions of Use are met.
2. Ensuring that the project meets all applicable requirements of the City of Portland Stormwater Management Manual, including the Stormwater Infiltration and Discharge Hierarchy.
3. Ensuring that the design and installation of the units are appropriate for the project goals, site conditions, long-term maintenance requirements, and any other site-specific design requirements on private property or for use in the public right-of-way.
4. Sizing units to meet the current City of Portland Stormwater Management Manual presumptive design approach and pollution reduction requirements. The pollution reduction capacity is flow-based and assumes a treatment flow intensity of 0.19 inches per hour, 5-minute time of concentration, and a 0.90 runoff coefficient using the Rational Method with treatment rates based upon the Washington State Department of Ecology General Use Level Designation approved flow rates, in lieu of the manufacturer's standard flow rate. The treatment capacities for BayFilter EMC cartridges, based on those assumptions, are provided in Table 1. For sites with different times of concentration, different rainfall intensities may be appropriate. 
    

5. Each site plan must undergo review by BaySaver Technologies before the City of Portland can approve the unit(s) for site installation. A letter certifying the project has been designed to the manufacturer's specification must be submitted to the Bureau of Environmental Services prior to the appropriate design milestone. For public improvements, including public works permits, the letter must be submitted to the Bureau of Environmental Services prior to 60% plan review. For installation on private property, the letter must be submitted prior to approval of the building permit plan. The project designer is highly encouraged to work with BaySaver Technologies prior to the appropriate review milestone.  
6. If the project designer wishes to vary from these conditions of approval, the project designer must use the Performance Design Approach.  

Approval conditions

1. The Bureau of Environmental Services  may at any time suspend or revoke approval if the performance of the technology does not meet performance criteria, if there are changes to the Technology Assessment Protocol certification, or the performance criteria change due to local, state, or federal pollution reduction standards
2. If any changes, updates, or revisions occurred to the BayFilter EMC, the applicant must obtain Washington State Department of Ecology Technology Assessment Protocol General Use Level Designation certification and re-apply following submission guidelines in effect at the time of application.  

More information on the product can be found on the manufacturer's product website. 

Approved: January 2018 under the requirements of the 2016 Stormwater Management Manual.