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HomeMy WebLinkAboutNC0026689_NOI_NOV2020LV0466_Response_20200630 (2)TOWN OF DENTON June 30,2020 North Carolina Department of Environmental Quality Division of Water Resources 450 West Hanes Mill Road Suite 300 Winston-Salem, NC 27105 Subject: NOTICE OF VIOLATION & INTENT TO ASSESS CIVIL PENALTY Tracking Number: NOV-2020-LV-0466 Permit No. NCO026689 Denton WWTP Davidson County Dear Mr. DiMatteo: We are writing in response to your letter dated June 15, 2020 NOTICE OF VIOLATION & INTENTTO ACCESS CIVIL PENALTY Tracking No.: NOV-2020-LV-0466, and would like to provide justification as to why a civil penalty of any amount would impede our efforts in rectifying the issues we are experiencing. We are continuing to focus on the cleanliness of the chlorine contact chamber as we feel the organics that get trapped in it is the culprit. We have followed all recommendations given to us from State officials as well as that of the North Carolina Rural Water Association. We have recognized that as the water warms up above 20°C that we see the formations of the Dichlorobromomethane and this is when we put in place all apparatus that has been suggested. The following is a list of the things we have done as well as steps we take to combat this pollutant; • Installed a submersible pump with an aspirator before sampling area to give effluent a boost of oxygen to help strip the Dichlorobromomethane from water. • Installed a disinfectant recirculation pump to use the plants effluent to re -chlorinate the water in lieu of using Town water which was found to contain large amounts of Dichlorobromomethane. • Increased draining and cleaning of clarifiers and chlorine contact chamber. • Increased disinfection and cleaning of tertiary filters. 201 W. Salisbury Street P.O. Box 306 Phone: (336) 859-4231 Denton, NC 27239 Fax: (336) 859-3381 This institution is an equal opportunity provider and employer • Reduced the chlorine pounds per day feed as well as decreased Sulfur Dioxide feed but also maintaining limits of fecal coliform colonies. As I have explained, we have continued to seek out and find solutions for this issue. We ask that no monetary fine be levied against the Town of Denton as any amount will impede our efforts to return to compliance and maintain compliance. Please note that as of the writing of this letter we have returned to compliance. The results for April and May 2020 were <1.00 ug/L. Lastly, We submitted our NPDES Permit application on May 18, 2020 as it expires February 28, 2021, in it we have requested that Dichloribromomethane be removed citing EPA Rule 391-3-6.03 (S)(e)(iv) which states the in stream concentration for Dichlorobromomethane shall not exceed 17 ug/L under average or higher flow conditions. Based on historical monitoring of this parameter, the effluent concentration would not cause exceedance of this standard. Thank you for your consideration and attention in this matter. Sincerely, W4j JJ . qJ 0 Troy B. Branch Town of Denton WWTP ORC 201 W. Salisbury Street P.O. Box 306 Phone: (336) 859-4231 Denton, NC 27239 Fax: (336) 859-3381 This institution is an equal opportunity provider and employer