NC0085154_Report_20240116

RECEIVED
Town of Weaverville NC0085154
JAN 16 2024
Lawrence T. Sprinkle Jr. WTF
Randall Wilson Water Treatment Supervisor/ORC NCDEQ/DWR/NPDES
828-658-2417
Corrective Action Plan for Copper (CU).
The Town of Weaverville takes all compliance issues very seriously with the upmost of
importance.
• The town has analyzed all data dating back to January 2015 to try to see any
possible trends with copper testing results. What we can best determine is that
the town has only had two occurrences where the results submitted to the town
from a third-party laboratory were readable results above the minimum testable
limit. Once in July of 2017 with that level being 11u I and then once in August ust of g
2021 and that level was 4ug/I. In finding this, it is very difficult to track what
could be the cause of it being so random.
• In 2022 the town collected two effluent copper samples a month. All those test
results came back <1 ug/L. Starting in January 2023 we will be collecting two
Effluent samples and Raw Water samples a month on the same days as our
effluent samples are collected. Hopefully this will tell us if it is coming from our
source water.
• After collecting all the data from our effluent and our source water in 2023 I have
determined that the copper is coming from our source water. In 2023 our test
results showed that we had Copper above the reportable limit of <1 ug/L
17 times that ranged from 1 ug/L to 3.37 ug/L from the source water. Our
effluent test results showed that we had gone above the reportable limit of <1
2 times. Once was in April 2023 it was a 2 ug/L the other time was in September
2023 it was 1.54 ug/L. I have spoken to Lauren Armeni and Daniel Boss about
Copper being in our source water.
• In 2024 we will be continuing to collect two Effluent and two Source water
samples a month to be tested for copper. We will be monitoring the results for
any changes.
Randall Wilson
Water Treatment Supervisor/ORC