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HomeMy WebLinkAboutNC0024244_SOC (application)_20200227February 27, 2020 Mr. W. Corey Basinger Regional Supervisor, Water Quality Regional Operations Section NCDEQ Mooresville Regional Office 610 East Center Avenue, Suite 301 Mooresville, NC 28115 Re: Response to Notices of Violation and Assessment of Civil Penalties Case No. DV-2020-0011($1,376.93) Case No. DV-2020-0010 ($626.93) Case No. DV-2020-0009 ($1,126.93) Case No. LV-2020-0056 ($4,615.76) Case No. LM-2020-0008 ($8,865.76) Case No. LV-2020-0063 ($3,615.76) Case No. LV-2020-0055 ($4,615.76 Case No. LV-2020-0057 ($5,617.76) Case No. LV-2020-0061($8,115.76) Case No. LV-2020-0062 ($9,490.76) Case No. LV-2020-0060 ($6,115.76) Case No. LV-2020-0058 ($4,115.76) Dear Mr. Basinger: This letter is to provide supplemental response to the Notices of Violation and Assessment of Civil Penalties received by Albemarle as listed above. Our firm is assisting Albemarle with several ongoing and planned sewer rehabilitation projects, and we have a thorough understanding of the challenges they face during rain events. The Albemarle utility staff, City Manager, and City Council recognize they have an inflow and infiltration problem in their sewer collection system. Inflow and infiltration are difficult challenges to solve, and it is not one that can be solved quickly. The Albemarle leadership is committed to improving the issues you presented in the NOV's, and that commitment takes the form of significant capital improvement projects aimed at reducing inflow and infiltration. Since 2012 Albemarle has committed to nearly $10,000,000 in sewer rehabilitation capital projects, and together with City staff we are planning additional sewer upgrades as listed below. Please note #1 through #4 below were also included in a March 28, 2019 letter from LKC addressing a previous NOV. They have been updated based on present status. 1. Sanitary Sewer Rehabilitation, Phase 1(CS370522-04): This $3,500,000 project was completed in 2014 and featured digging and replacing approximately 15,000 feet of 36" and 24" gravity sewer. The rehabilitated sewer line is the primary gravity sewer outfall that serves the majority of the City. LKC En&eering, PLLC, 140 Aqua Shed Court, Aberdeen, North Carolina 28315 PH: 910/420-1437 * FAX: 910/637-0096 * License No. P-1095 2. 2018 Wastewater Collection and Treatment Improvements (CS370522-06): This $6,400,000 project features the digging and replacing of 7,000 feet of 24" gravity sewer and pump station and electrical renovations at the treatment plant. Presently, the construction is approximately 75% complete and is on schedule for a Spring 2020 closeout. 3. Sanitary Sewer Rehabilitation, Phase 3A: This project replaced approximately 700 feet of 24" gravity sewer at the downstream side of the City's west side outfall. This leg was videoed in January 2019 and several sags and pipe failures were identified. The was completed in April of 2019 using the City's utility crews. The cost of the material and the bypass pumping is estimated at $150,000. 4. Sanitary Sewer Rehabilitation, Phase 313: Albemarle applied for $6,156,000 in CWSRF funding in the Fall of 2020 cycle. The project features the rehabilitation of approximately 10,000 feet of gravity sewer ranging from 24" to 8" in size, and continued, significant electrical upgrades at the wastewater treatment plant. The SWIA approved the funding the Albemarle will start the Engineering Report in the coming weeks. 5. Gravity sewer flow monitoring: LKC installed three flow monitoring devices on Albemarle's three primary sewer outfalls in mid -January 2020. Those devices continue to be monitored, and 3-6 more flow trackers are planned for installation in March of 2020. The goal is to locate sources of significant inflow along the primary outfalls. 6. Potential WWTP process conversion: in December 2019 and January 2020 LKC performed detailed process modeling of the Long Creek WWTP, and we shared the results with the City in January. The model indicates there could be value to transitioning the aeration process to help the plant remain in compliance during a broad regime of flow and loading. LKC and Albemarle are still vetting the results, and final recommendations are expected by April 2020. If a process change is the recommendation, we will discuss with DEQ staff and Albemarle will consider methods to fund the capital investment. Albemarle's leadership remains committed to implementing capital projects to reduce inflow and infiltration and maintain compliance at the Long Creek WWTP. These projects require time to plan, secure funding, design, and implement. We understand a Special Order by Consent is being prepared to formalize Albemarle's commitment to resolving these issues and to assist with Notices of Violation in the meantime (SOC No. SOC _WQ-519_007). The SOC application was submitted in September of 2019, with additional information provided in November of 2019. If you have any questions, please do not hesitate to contact me by phone at (910) 420-1437 or by email at adam@LKCengineering.com. Very Best, Adam P. Kiker, P.E. CITY OF • BOX 190, ALBEMARLE, NC 26002-0190 PAGE. 1 OF 3�'t! �. ,.`.lY,�� ;.:� °�C�_�._.- - `�. .t .....�. AM.{.�.. kk. � t--., .. �'i z:=' � i�:i`1' :!2 • �R �';a'-3�-. %a'�A�.,, �z�§. '' l �'����Y'qz,,.�