Newington adopted Stormwater Regs in 2010. The Con Com actually applied for a grant from the Piscataqua Region Estuaries Partnership to help draft our regulations. We did not use the DES model regs however as a different approach was recommended.
The regs have only been applied to a single project... a Tyco manufacturing facility expansion with fantastic results, and Tyco gets a lot of credit for going above and beyond the requirements.
The only regret with the approach took in its regs is that the Town's pollutant removal criteria do not apply to projects subject to AoT or EPA review. That was a mistake because of the Town's location in an estauary makes nitrogen removal the primary focus, whereas the state BMP manuals focus more on phosphorous and TSS removal that is more important in fresh water ecosystems. In addition, waivers at the state level could undermine the strength of the Town's regulations which state that the project must "comply with the standards of EPA and/or NHDES AOT program". This leaves open whether a State waiver takes away the Town's ability to uphold the standards that were meant to be applied.
That said, one reason I would encourage other municipalities to look at Newington's example is that we put considerable focus on redevelopment proposals as our Town contains heavily developed areas where the watersheds are already 50% impervious. We tried very hard to come up with a standard that would encourage developed areas to be re-used while providing for incremental improvements to water quality. The sense was that there is a lot of "low hanging fruit" for water quality improvements at these sites.
Co Chair Newington Conservation Commission