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HomeMy WebLinkAboutNC0082694_Correspondence_20220328 (3)Zackery Foreman Water Treatment Superintendent Town of Dallas 210 N. Holland St Dallas, NC 28034 (704) 922-1309 zforeman@dallasnc.net 2/1/2022 Ori Tuvia Environmental Engineer NCDEQ/Division of Water Resources (704) 235-2190 ori.tuvia@ncdenr.gov Ref: Inspection 1/25/2022 Incident Report Andrew Pitner Environmental Program Supervisor 11 NCDEQ/Division of Water Resources (704) 235-2180 andrew.pitner@ncdenr.gov Corey Basinger Regional Supervisor NCDEQ/Division of Water Resources (704) 235-2194 corey.basinger@ncdenr.gov Ori Tuvia arrived at the facility on January 25, 2022 for an inspection of the discharge at the water treatment facility. When we did the walk around, we found that the lagoon was overflowing. The water was entering a storm drain adjacent to the lagoon. I was unaware of the overflow. Further investigation we checked chlorine in the pond and found the level above discharge limit. The lagoon chlorine was 65 ug/L. We then looked at where the stormwater drain went. It empties into a storm pond behind the high service pump building. This also seemed to be overflowing but was unable to tell if it was a normal condition or confirm it was overflowing. We tested the stormwater pond chlorine levels were 22 ug/L which is below limit. The two ponds are roughly 600ft apart. We then entered the adjacent property (PIN#3568309886 Owner: Kelly Investment Company) where we found a ditch that runs behind our property. This ditch ran toward the woods parallel to the river. Which is >400 ft from the river. I don't think any of the flow made it to the stream. • Stormwaterline I, Ditch d Discharge Riverside Fish House Seafood • Dallas Water Plant it REKItspesan Imagery C2022 Maxar Technologies, Orbis Inc, U.S. Geological Survey, USDA Farm Service Agency It was requested that we have an immediate action to stop the overflow. I decided to open the recirculation valve to put the water back into the pre -sedimentation basin. This action stopped the lagoon from continuing to overflow. January 26th, 2022, we checked the chlorine level again in the lagoon. The chlorine level was .43 ug/L this is below acceptable limit. We started discharging. This lowered the lagoon level giving freeboard in the pond. On January 27th ,2022 we noticed that the level was increasing without any output from the water treatment facility. Upon further inspection we found that the back pond was adding water to the main lagoon. The back pond was originally a chemical containment pond for the bulk chemical tanks. We are not sure when the connecting pipe was installed between the to ponds was installed. It seems it was put in place as an overflow component for the lagoon. This has been part of the issue since all rainwater that enter the containment for the chemical tanks was being sent to that back pond which in turn went to the lagoon elevating the level. The consensus is that the pipe is set around the overflow level of the lagoon. Will attach full size plans with this report Couldn't find any drawings showing the pipe that interconnects the ponds. We also need to have both ponds dredged to remove solids that have built up in both ponds. Have contacted Southern Soil builders about removing the solids. He is set to be onsite February 7th, 2022 @ 11:00 am to discuss our options for getting the solids removed. Solids have been removed from the sand filters and transported to the landfill. Flow is being managed to keep freeboard in the lagoon. Inspection of the lagoon is happening daily to maintain level. Zach Keys is working on options to remove the solids form the lagoons we should have the options by February 8, 2022. We will be moving quickly to complete the solids removal once we receive the options and choose the best solution for the sludge disposal. Regards, Zackery Foreman Water Treatment Superintendent Town of Dallas January 3V, 2022 11. A r..aPr -Q. R �Oa�K ....s. • — 12.4- 4_�2' LC-w-cLA+aciS� I 0 �4 PAT'S ROAD - 6v N 14-39-28 W 423.70 aJ P y✓"• 7 r- 5Y!., a+€3*= E+�.a'c.H40aµ_LL ... 4,a F a N RC1. I•StY. ��.. ¢sioa- t4 4,-/ 3�zA P-1-16 — i Z' GM�rri Qh