- In 2010, cleanup began at 248 residential properties and was completed in 2012.
- Construction of a remedy at Rochford Field and Peter Villano Park got underway in late fall 2014 and was completed by November 2015. Hardscape areas (tennis courts, basketball courts and play equipment) at Villano Park are now open. Play on the restored ball fields and grassy areas (Villano Park and Rochford Field) resumed in spring 2016.
- Cleanup of former Community Center grounds at corner of Newhall and Morse Streets was completed in 2016.
- Cleanup of former Hamden Middle School property will be completed once and approved development plan gets underway. At this time, cleanup is anticipated to start in late 2018 or early 2019.