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Proprietary Stormwater Quality Treatment DevicesAccepted DevicesThe following proprietary stormwater quality treatment devices are currently accepted for use in Sacramento County:
Submittal RequirementsSite designers proposing to use either the Stormvault or the StormFilter shall include the following items in the submittal and on the improvement plans (drawings to scale):
Currently, the City & County of Sacramento do not allow these types of proprietary stormwater quality treatment devices to be installed in the public right-of-way or in areas where the local agency would be required to conduct maintenance. Other local agencies may or may not allow this; check with your permitting agency for verification. Maintenance Covenants are required to ensure proper maintenance of the selected stormwater quality treatment device. Pilot Study Monitoring RequirementsIn select cases, the local permitting agency may allow the use of alternative proprietary treatment measures as a "pilot study." In such cases, the property owner and/or manufacturer will be required to fund and complete a monitoring study to verify the device's performance. Since approval is not guaranteed, site designers proposing to use an alternative technique should coordinate with the permitting agency early in the site design process. An addendum to the pilot study procedure has been added for proprietary devices that have TAPE (Technology Assessment Protocol – Ecology) or TARP (Technology Acceptance Reciprocity Partnership) data. If this applies to you please see the amendment. It provides information regarding what you would need to provide to obtain approval in Sacramento Region. Referenced Protocols
HistorySince the late 1990's, the Sacramento Stormwater Quality Partnership has been conducting a study to investigate the performance of proprietary stormwater quality devices. In November 1999, they published the report “Investigation of Structural Control Measures for New Development”. The report documents the protocol that must be followed in order for a particular device to be accepted for use in the Sacramento area. Manufacturers have been invited on several occasions since then to submit data which could be reviewed for conformance with the protocol, but to date, only one proprietary stormwater quality treatment device has successfully met the protocol: Stormvault by CONTECH Stormwater Solutions®. In addition to devices accepted using the Sacramento area protocol, the Sacramento Stormwater Quality Partnership (Partnership) will accept technologies with the Washington State Department of Ecology's General Use Level Designation for Basic (TSS) Treatment on a case by case basis. Refer to Ecology's Evaluation of Emerging Stormwater Treatment Technologies for more information on their technology evaluation program and protocols. As of January 25, 2006, the Partnership has accepted the StormFilter by CONTECH Stormwater Solutions®. Only the model containing ZPG (zeolite/perlite/granular activated carbon) mix approved for basic treatment at 1 gpm/ft² is approved. Note that other media or higher flow rates will not be accepted at this time. Note that no other proprietary treatment devices are approved at this time. UpdatesThe Partnership periodically updates the information on this website regarding proprietary treatment devices. Manufacturers are encouraged to submit new and/or updated information for evaluation. Please submit information to the following: This web site will be updated if any additional proprietary devices are found to meet the agencies' performance requirements.
Updated August 27, 2009 |