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'"""'\ ----- .. STATE OF COLORADO COLORADO DEPARTMENT OF HEALTH <4210 EaS( 11th Avenue Denver, Colorado 80220 Phone (J031 320-8333 Roy Romer c;o.e""" Tho.".' M. V~rnon. M.D. Execulive OueC101 July 8, 1988 162291 Ft. Lupton, City of PO Box 148 Ft. Lupton, CO 80621 Dear Water Purveyor: You recently received a letter from this Department which identified your water system as having high nitrate levels. The letter went on to explain that, at this time, an exemption to the nitrate standard could be applied for. The conditions for the exemption are as follows: 1. The nitrate level cannot exceed two times the nitrate standard (cannot exceed 20 mg/l); Public notification must be made regularly as set down in the Colorado Primary Drinkin~ Water Re~ulations; A compliance achedule must be agreed to which will set a time frame by which the system .will come into compliance; Sampling of all water sources, for nitrate levels, will be done annually to assess the level of health concern; A written description of what action has been previously taken to address the nitrate problem. 2. 3. 4. 5. A proposed compliance schedule is attached for,~our review. The maximum allowable time period for compliance is three (3) years. Should problems arise during the three year life of the exemption, which may affect meeting the time frames, we would need to meet and discuss what changes to the schedule would be appropriate. .' :. After you have reviewed the requirements for an exe~ption, snd considered the compliance schedule, you will need to apply for the exemption. As soon as the requirements have been met and submitted to us, we can begin processing the request. A signed compliance schedule will be required. Attached is a copy of a nitrate treatment study prepared by the department for your information. RECEI\iEO JUL 1 I} 1988