CITY OF LOUISVILLE

This Administrative Order for Compliance on Consent (Consent Order) with the City of Louisville, Colorado (City) is for failing to implement its approved pretreatment program in multiple areas. Violations addressed by the Consent Order include: violations of the City’s manganese limit in its NPDES permit, failure to report manganese violations as caused by industrial discharges from the City’s drinking water treatment plants (DWTPs), failure to identify the City’s DWTPs as significant industrial users (SIUs), failure to investigate noncompliance by the DWTP, failure to control the discharges from the City’s DWTPs, failure to include all required elements in permits issued to other SIUs, failure to sample each SIU at least once per year, failure to create required sampling records, failure to develop and implement procedures to evaluate significant noncompliance by industrial users, failure to publish an SIU as having been in SNC, failure to analyze SIU reports, failure to implements the City’s updated pretreatment ordinance, and failure to enforce against industrial users. Violations were observed during the July 11 and 12, 2013 EPA inspection. The Consent Order requires the City to address the violations cited above by submitting a corrected annual pretreatment report including the pass-through caused by the City’s DWTPs, reviewing SIU files and taking enforcement were necessary and providing documentation of this to the EPA, publishing industrial users in SNC and p