310162_Certified Letter - Lagoon Sampling_20180521

J
ROY COOPER
Govenror
MICHAEL S. REGAN
�:
Secretary
Water Resources LINDA CULPEPPER
Environmental Quality Interim Direcror
May 21, 2018
CERTIFIED MAIL 7016 2140 0000 0562 4240
RETURN RECEIPT REQUESTED
Charles Edwards
Glade Ridge
1112 Cedar Fork Rd
Beulaville, NC 28518
SUBJECT: Lagoon Sampling - April 13, 2018
Glade emu Ridge
L6'
plin Croun
Dear Charles Edwards:
Thank you for your cooperation in the Division's lagoon waste sampling efforts on April 13, 2018. On that
day seven teams of Division staff sampled 35 farms and a total of 55 waste lagoons. Multiple teams were
necessary to assure that teams followed proper biosecurity protocols to protect your animals. I apologize
for the short notice that was provided to you by our staff. It was our intent to do the sampling as efficiently
and effectively as possible with as little disruption to you and other operators. Staff notified you as soon
as possible once we were comfortable that weather would cooperate and we had staff prepared to complete
the desired sampling on a single day. Complete results of the sampling are available on the NCDA&CS
Agronomic Services Division PALS website and can be accessed there at your convenience.
http://www.ncagr.gov/agronomi/paW
The Division submitted the samples to the lab on April 13, and the standard waste analysis was performed
the following week. The certified results are available to use for loading rate calculations in you waste
application records. Our staff followed sampling protocol established by NCDA&CS Agronomic Sampling
FolderNo. 6, revised April 2014, a copy of which is included with this letter. You may at anytime resample
your lagoons to establish updated results if you feel more representative sample is desired for future
application events.
One of the intents of the sampling effort was to look at observed changes in lagoon sampling results in a
relatively short period of time. Our records show that a previous sampling event took place on March 17,
2018. Results of the April 13 and March 17 sampling events are shown on the following pages for each
lagoon sampled on your farm.
The results show a significant difference in the PAN concentrations as well as other macro and micro
nutrients that put into questions the validity of the March 171 sampling results. It is unlikely that a lagoon
make-up will change significantly in a month without significant operations event occurring like a lagoon
sludge clean out. Staff also noted a high observed sludge blanket in your lagoon; however, have not yet
obtained records of the last sludge survey to verify visual observation. For these reasons the Division has
deemed the March 1T h sampling results for lagoons to be invalid until additional information or explanation
can be provided to justify differences in sampling results. More details on the information requested to
validate the March 171 sampling data is included below:
<.. -Nothing Compares -..
State of North Carolina I Environmental Quality I Division of Winer Reoun: s
Watw Quality Reglooal Openaoat S"don
1636 Mad Servt= Center I Raleigh, North Carollaa 27699-1636
919-707-9129

Lagoon Sampling -April 13, 2018
Page 2
Lagoon Name: CE2 and GRB
Parameter
Sample Date
3/17 - 4/13
3/17/2018
4/13/2018
Difference
% change
537
1735
1198
223% _
2.2
7.2
5.0
223%
42
549
507
1209%
453
889
437
96%
113
544
431
381%
• 28
382
354
1266%
31
196
166
543%
2.5
116.7
114.2
4538%
0.3
10.9
10.6
3464%,
0.7,:
0.3'
43.1 >: F
42.4
6002%
46.1
45.8
15911%
0.5
1.2
0.7
125%
174.9
249.5,
74.7
43%
7.1
0.7
7.5
0.4
5%
0.2
-0.5
74%
Laeoon Name: CE1 and GRL
Parameter
Sample Date
3/17 - 4/13
3/17/2018
4/13/2018
Difference
% change
557
1066
509
91%
2.3
4.4
2.1
91%
41
219
179
439%
437
962
525
120%
112
- 302
190
170%
• 27 _ _
171-
144
527%
109
2.4
103
37.8
-5
35A
-5%
1498%
0.3
4A
4.1
1370%
0.8
15.2
14.5
1887%
0.4
15.5
15.2
4189%
0.5
1.0
0.5
95%
167.2
240.2
73.0
44%
• 7.2 _
7.6
0.4
6%
0.7
0.1
-0.7
91%

Lagoon Sampling -April 13, 2018
Page 3
Two lagoons were sampled at your farm. Concentrations reported for the two lagoons in March 2018 were
noticeably more similar to one another than compared to the April sampling results. The variation found
in the April 13 sampling analysis is much more consistent with normal variations found in swine lagoon
effluent is NC. The following two tables show the differences reported for your lagoons for the March and
April Sampling Events.
3/17/2018 Sampling Results
m PAN in Ibs.11000gallons)
La oon ID
CE2- CEI-
Parameter 162 262 Range
537
557
20
2.2
2.3
0.1
42
41
1
453
437
16
113
112
1
28
1 27
1
31
109
78
2.5
2.4
0.2
0.3
0.3
0.0
0.7
0.8
0.1
0.3
0.4
0.1
t 0.5
0.5
0.0
174.9
7.1
167.2
7.6
7.2
0.1
0.7
0.7
0.1
4/13/2018 Sampling Results
m , PAN In IbsJ1000gallons)
Parameter
Lagoon ID
GRB
GRL
Range
1735
1066
669
7.2
4.4
2.8
549
219
330
889
962
73
544
302
242
382
171
210
196
103
93
116.7
37.8
79.0
10.9
4.4
6.6
43.1
15.2
27.9
46.1
15.5
30.6
t 1.2
1.0
0.2
249.5
7.5
240.2
9.3
7.6
0.1
0.2
0.1
0.1
As a result of initial evaluation of the sampling results the Division will be conducting additional evaluation
of historic data at your farms and at the other farms that were sampled on April 13, 2018. It is necessary to
further investigate the unusual changes in lagoon characteristics between March 17 and April 13, 2018.
To assist in the investigation.please provide the followin¢ to the Wilmineton Reeional Office no later than
June 21, 2018
• Results of the last 2 years of sludge survey, including information on who conducted the survey.
• Records of any sludge removal that occurred between March 17 and April 14, 2018.
• Any operational changes that may have contributed to the lagoon characteristics between March
17 and April 13, 2017.
• Results of any additional lagoon waste analysis for the lagoon in question conducted since March
17, 2018

Lagoon Sampling —April 13, 2018
Page 4
Please contact the Wilmington Regional Office at [phone] or Christine Lawson at (919) 807- 6354
if you have further questions.
Sincerely,
on Risga6d
Chief, Water Quality Regional Operations Section
Division of Water Resources
Enclosure
cc: Wilmington WQROS Regional Supervisor
WQROS Central Files