Stormwater Manufactured Treatment Devices
Where the use of an MTD is being sought to satisfy the requirements of the Stormwater Management rules pursuant to N.J.A.C. 7:8, as a result of triggering the requirements for major development, the MTD must have NJCAT verification and NJDEP certification. Where the use of an MTD is sought to improve water quality, but is not being installed to satisfy the requirements of the Stormwater Management rules under N.J.A.C. 7:8, nor is it using NJEIFP funding for installation and design, the MTD is not required to be NJCAT verified or NJDEP certified. Please note that any MTD installed must be listed on the MS4 permittee’s inventory of stormwater management measures and must be properly maintained by the responsible party. Other state, federal and local requirements may apply.
NOTICE (September 1, 2011)
The manufactured treatment devices (MTDs) on this page are only approved as off-line water quality devices unless certification specifically states otherwise or unless the Department has issued a letter to indicate that it can be used as an on-line water quality device. An on-line water quality device allows the passing of storms greater than the NJDEP water quality design storm through the device.
Projects that have been deemed administratively complete by the Division of Land Use Regulation for a permit requirement stormwater review as of September 1, 2011 may continue to utilize the design as specified in the prior certification letters. If no permit is required from the Division of Land Use Regulation, projects that have been deemed administratively complete by the municipality as of September 1, 2011 may continue to utilize the design as specified in the prior certification letters.
NOTICE (January 25, 2013)
MTDs that are set to expire on September 1, 2013 have been issued a new expiration date of January 25, 2015.
Click here to link to NJCAT Verification Database