NCG060328_DMR_20200617

June 17,2020
PET Dairy
2221 N Patterson Avenue
Winston Salem,North Carolina 27105 a"%7 F-A
Central Files JUN 2 3 2020
Division of Water Quality t`t , r r
1617 Mail Service Center i _ <-•
Raleigh,North Carolina 27699-1617
Dear Sir or Madam:
Since two consecutive bi-annual storm water samplings, as required by our permit, had exceeded our
benchmark values for COD and TSS for three of the four outfall locations, we had increased our program
management protocols from Tier II to Tier I, requiring monthly sampling of the problem outfall locations
for the measures that exceeded benchmarks(P1, P2, WI). The latest water sampling is summarized below
and a copy from the lab included with this letter.
Samples Taken COD Oil&Grease per' TSS
10/11/18 Mg/L ,Mg11 St Units ';.;: Mg/L
Benchmark " 120 30 . 6.0-9.0 • 100
Outfall PI 9 <5 6.42 15.2
Outfall P2 <5 <5 6.48 127
Outfall P3 499 <5 6.49 1620
Outfall WI <5 <5 6..61 6.60
We are working to identify and mitigate the COD and TSS problems at outfalls with a sweeping and
parking lot maintenance program that includes repairing and replacing deteriorated sections.
Certificate of Coverage(COC)No.:NCG060328
Sincerely,
111U (1-
Matthew H. Brooks
Senior EHS Manager
[phone]
[e-mail]