NCG060328_DMR_20200430

April 30, 2020
Suiza Dairy Group LLC.
2221 N Patterson Avenue
Winston Salem, North Carolina 27105
Central Files
Division of Water Quality
1617 Mail Service Center
Raleigh, North Carolina 27699-1617
Dear Sir or Madam:
MAY 112020
CENTRAL FILES
DWR SECTIO,A1
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, W1). The latest water sampling is summarized below
and a copy from the lab included with this letter.
COD
M L
Oil & Grease
M L
pH
Std. Units
TSS
M L
10u7.tfalIP2
120
30
6.0-9.0
100
58
<5
6.35
88.8
224
<5
6.41
307
Outfall P3
7
<5
6.60
7.6
Outfall Wl
503
<5
6.37
803
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,
V,��
Matthew H. Brooks
Senior EHS Manager
[phone]
Matthew—[e-mail]

RESEARCh & ANA[yTICAL
LAWRATORIESF ING
For: Pet Dairy
2221 Patterson Avenue
Winston Salem, NC 27105
Attn: Adam Slack
Client Sample ID: Road
Site: Pet Dairy
[_Parameter
COD
Hydrocarbon O&G
pH
Total Suspended Solids
Client Sample ID. Guardhouse
Site: Pet Dairy
Parameter
COD
Hydrocarbon O&G
pH
Total Suspended Solids
Client Sample ID: Warehouse
Site: Pet Dairy
I Parameter
COD
Hydrocarbon O&G
pH
Total Suspended Solids
Method
EPA 410.4
EPA 1664 Revision B/Silica Gel
SM 4500 H+13-2011
SM 2450 D-2011
Method
EPA 410.4
EPA 1664 Revision B/Silica Gel
SM 4500 H+B-2011
SM 2450 D-2011
Method
EPA 410.4
EPA 1664 Revision B/Silica Gel
SM 4500 H+13-2011
SM 2450 D-2011
Report of Analysis
4/29/2020
of 10
cc NC tt34 Z: • �.
S NCtt37701
Lab Sample ID:
Collection Date:
81145-01
4/20/2020
10:00
Result
Units
Rep Limit Anal st Analvsis Date/Time
58
mg/L
5
HW
4/21/2020
<5
mg/L
5
EE
4/21/2020
6.35
Std. Units
AB
4/20/2020 1633
88.8
mg/L
5
AW
4/21/2020
Lab Sample ID:
Collection Date:
81145-02
4/20/2020
10:00
Result
Units
Rea Limit Analyst Analvsis DatelTime
224
mg/L
5
HW
4121 /2020
<5
mg/L
5
EE
4/24/2020
6.41
Std. Units
AB
4/20/2020 1635
307
mg/L
5
AW
4/21/2020
Lab Sample ID:
Collection Date:
81145-03
4/20/2020
10:00
Result
Units
Rep Limit Anal st Analysis Date/Time
503
mg/L
5
HW
4/21/2020
<5
mg/L
5
EE
4/24/2020
6.37
Std. Units
AB
4/20/2020 1636
803
mg/L
5
AW
4/21/2020
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 1

RESEARCh & ANALyTiCAL
LAbORATORIESF INC.
Report of Analysis
4/29/2020
Client Sample ID: I/C
Lab Sample ID:
81145-04
Site: Pet Dairy
Collection Date:
4/20/2020
10:00
Parameter i
Method
Result
Units
Rep Limit Analyst Analysis Date/Time
COD
EPA 410.4
95
mg/L
5
HW
4/21/2020
Hydrocarbon O&G
EPA 1664 Revision B/Silica Gel
<5
mg/L
5
EE
4/24/2020
pH
SM 4500 H+13-2011
6.39
Std. Units
AB
4/20/2020 1636
Total Suspended Solids
SM 2450 D-2011
54.0
mg/L
5
AW
4/21/2020
NA = not analyzed
P.O. Box 473 106 Short Street Kernersville, North Carolina 27284 Tel: [phone] Fax: [phone] www.randalabs.com Page 2
rat coa basic vid

FlPhoRESEARCh & ANA1yTICA1
LAhORATORIES, INC.
neAnalytical / Process Consultations
[phone]
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