Respondent is authorized to discharge its treated sanitary wastewater into the Rio Guayo. Based on a review of DMRs from January 2008 to December 2009, Respondent violated effluent limits for BOD, Nitrate plus nitrite, Total Phosphorus, copper, color, arsenic, surfactants, lead, fecal coliform and total coliform. The order calls for the development and submission to EPA a plan of action to achieve compliance with effluent limits.