This excerpt taken from the NVR 10-Q filed Nov 3, 2005.
11. Legal Proceeding
In April 2005, the United States Environmental Protection Agency (the EPA) notified NVR that the Company was allegedly in violation of Section 308(a) of the Clean Water Act (the Act) at a construction site in Pennsylvania. The notice informed NVR that the Company might be subject to administrative fines of up to $157 for the alleged violations. Subsequently, in September 2005, NVR received a request from the EPA pursuant to the Act for information about storm water discharge practices utilized in connection with other recent homebuilding projects undertaken by the Company. NVR is working with the EPA to provide the requested information and to review NVRs compliance with the Act. It is not known at this time whether the EPA will seek to take legal action or impose penalties in connection with the alleged violation at the construction site in Pennsylvania.