Arsenic levels at both of Bernalillo’s active wells have jumped over the past three years, and the New Mexico Environment Department announced Tuesday it will issue the Town a second arsenic violation notice by next week. The town’s project engineer, Ramesh Narasimhan, is now considering supplementation of the Town’s aluminum-based arsenic removal system with iron treatments — an approach recommended in a 2006 engineering report scuttled by former town manager Stephen Jerge. At Narasimhan’s recommendation, Jerge opted instead for the Town’s no-bid purchase of the aluminum-based system, which is produced by a Bernalillo firm.