820632_Plan of Action_20210318

MAR 2 9
VVQRQS
PLAN OF AC` fCI' ` 1 A) l R .#�FG` bN SLUDGE REDUCTION
Facility Number: e'2-6 3
Eac icyN;rn : •
1
Certified Operator Nairre: .4 Operator #:
•• '*-Attach a copy of Lagoon Sludge Survey Form and volume worksheets
Note: A ceiiified Sludge.Mlanagement Plan may be submitted in lieu of this POA.
Lagoon 1
Lagoon 2
Lagoon 3.
Lagoon 4
Lagoon 5
Lagoon 6
a. Lagoon Kerne/ Identifier
J
b.-Total Sludge Depth (ft) •
�f
c. Sludge Depth to be
Removed for Compliance
(ft) -
3 �
d. Sludge volume to be
Removed (gallons)
..).6 Q c, c
e. Sludge PAN
(Ibs/.1000 gal)j�/
'_
f: l_i quid PAN1,
(Ibsf1000 gal)
...
A(/'
.. .
g. PAN:of Sludge'(Ibs)`'''' ,;
' (d x e)/1000`...:
,.
r /�.. ..
Compliance Timeframes:
!f the sludge lavel is equal to r_•r higher than the Stop pump level of the iagoor:.or if the siudge ievei
results in an elevated waste analysis, a sludge management plan that meets the requirements of SS
interagency Group Guidance Document 1.26 must be prepared by a technical specialist and submitted to
DWQ within 90 days. Work to reduce the sludge level must begin within another 180 days. Compliance
with NRCS Standard 359 must be achieved within two years of the original sludge survey.
If the -sludge level is non -compliant but below the stop pump level of the lagoon, a POA must be filed
within90-days.and compliance with_NRCS Standard.359,must.be achieved within two -years of the
original sludge survey indicating non-compliance. if future sludge surveys do not show improvement in
sludge'. levels, ,DWQ may require the owner to develop a sludge management plan that meets the
re auirerrents.of SB.InteragencyGroup. Guidance Document 1.26,- •..
SPOA 3-22-2010
Page 1of2

rv;ARRA'i"IVtr: Use this section to describe the method(s) that will be used to lower the sludge
depth. If Microbe use is planned, specify the product tote used. .
Sludge Management/Operation Plan
Sludge Management Guidance
Lagoon evaluation data devoloped by NCSU and a review of lagoon management records of several.
lagoons showed that the treatment capability of.the .swine lagoons evaluated in NO was not
significantly adversely affected by sludge accumulations of. 50% or more of the planned treatment
volume of the lagoon. Therefore it is felt that it is permissible to allow sludge accumulation into the
planned treatment zone of properly monitored and managed lagoons provided that:
'Nutrient values of the lagoon effluent are within the normal operating range.
.O There is no noticeable increase in lagoon odor.
• Nutrients land applied from the lagoon are properly accounted for in the application plan
(WUP) with no excess application.
Stop -pump level Is easily attained with no adverse deposition of sludge into temporary
storage.
Sluoge Management
Sludge in my lagoon will be managed by the following:
Adequately monitor to define sludge volume, location, and rate of accumulation by
conducting an annual sludge survey.
Maintain a minimum 2.5 feet deep zone, free of sludge at the pump intake during irrigation.
Position the pump Intake and manage the Irrigation operation such that the material
irrigated is not more concentrated than the nutrient analysis samples.
• Sufficient monitoring to address concerns that nutrients are not over applied.
o Other items as required by DWQ.
i'l*rc :;y c4r ufy that I have reviewed the information listed above and included within the attached
Plan of Action, and to the best of my knowledge and ability, the information is accurate and
correct. 1 further certify and acknowledge that compliance with regard to sludge accumulation
must be achieved within two years of the original sludge survey indicating non-compliance.
�SiS.idjG :iu Jey late: p- 7"
Facility Owner/Manager (print)
Facility Owner/Manager (signature)
Compliance Due Date: /,2
Phone:
D 3 Vs-c/:
Date:
Return this form to:
Animal Feeding Operations Unit
NC Division of Water Quality
1636 Mail Service Center
Raleigh, NC 27699-1.636
SPOA 3-22-2010 Page 2 of 2

• ,.Rs''IICK AG SERVICES, LLC CLINTON, NC 910-385-1.000
Appendix.f1, Lagoon Sludge Survey Form
A. Farm Permit or [WVQ Identification Number Tommy Melvin Sampson Nursery
B. Laguolt iU:aitii,• riic; . '?
C. Person(s) Taking Measurements Curtis Barwick •
D. Date of Measurement 12/10/2020
E. Methods/Devices Used for Measurement of:
•a. Distance from the lagoon liquid surface to the top of the sludge layer.
remote control boat w/ depth sonar
•b,_.Distance from the lagoon liquid surface to the bottom (soil) of the lagoon.
pvc pipe
c. Thickness of the sludge layer if making a direct measurement with "core sampler".
F. Lagoon Surface Area (using dimensions at inside top of bank): 0.4 (acres)
(Draw a sketch of the lagoon on a separate sheet, list dimensions, and calculate surface area. The lagoon
may have been built different than designed, so measurements should be made.)
G. Estimate number of sampling points:
`a. Less than 1.33 acres: Use 8 points
b. If more than 1.33 ac. acres x 6 = 891 , with maximum of 24.
(Using sketch and dimensions, develop a uniform grid that has the same number of intersections as the
• estirnated number of sampling points needed. Number the intersection points on the lagoon grid so that data
recorded at each can be easily matched.)
H. Conduct sludge survey and record data on "Sludge Survey Data Sheet" (Appendix 2). Also, at the
location of the pump intake, take measurements of distance from liquid surface to top of sludge
layer and record it on the Data Sheet (last row); this must be at least 2.5 ft. when irrigating.
I. At the time of the survey, also measure the distance from the Maximum Liquid Level to the Present Liquid
Level (measure at the lagoon gauge pole): 0.7
J. Determine the distance from the top of bank to the Maximum Liquid Level 1.6
(use lagoon management plan or other lagoon records)
K. Determine the distance from the Maximum Liquid to the Minimum Liquid level: 1.9
(use lagoon management plan or other lagoon records)
L. Calculate the distance from the present liquid surface level to the Minimum Liquid Level 1.2
(Item K Minus Item I, assuming the present liquid level is below the Maximum Liquid Level)
M. Record frorn the Sludge Survey Data Sheet the distance from the present liquid surface level to the
lagoon bottom (average for all the measurement points) 8.6
N. Record'from the Sludge Survey Data Sheet the distance from the present liquid surface level to the top
of the sludge layer (average for all the measurement points): 3.9
0. Record'from the Sludge Survey Data Sheet the average thickness of the sludge layer: 4.7
P. Calculate the thickness of the existing Liquid Treatment Zone (Item N minus Item L): 2.7
Q. If Itenr0 is greater than Item P, proceed to the Worksheet for Sludge Volume and Treatment Volume.
If Item 0 is equal to or less than -Item-P, .you do not have to determine volumes.
3.5 at pump intake
Completed by: Curtis Barwick Date: 12/10/2020
Print Name /Signature

"ke
ndix 3. worksheet for sludge volume and treatment volume Revised August 2008
The average thickness of the sludge layer and the thickness of the existing liquid (sludge -free) treatment zone are determined
from the information on the Lagoon Sludge Survey Form ( Items 0 and P, respectively). In this example, the average sludge
layer Thickness is 2.5 feet and the existing liquid treatment zone is 3.5 feet, Pf the lagoon has a designed sludge storage volume,
see notes at end of the worksheet. The dimensions of the lagoon as measured and the side slope are needed
for calculations of sludge volume and of total treatment volume. If the lagoon is a standard geometric shape, the sludge'
volume and the treatment volume in the lagoon can be estimated by using standard equations. For approximate volumes .
of rectangular lagoons with constant side slope, calculate length and width at the midpoint of the layer, and multiply by layer
thickness to calculate layer volume, as shown in the example. For irregular shapes, convert the total surface area to a square
or,rectangularshape. For exact volumes for lagoons with constant side slope, the "Prismbidal Equations" may be used.
Example Your Lagoon
'I. Average sludge Layer Thickness (T) 2.5 ft 4.7 ft.
2. Depth of the lagoon from top of bank to bottom soil surface (D) 11 ft. 10.9 ft.
3. Slope = Horizontal/ vertical side slope (S) 3 3.0
4. Length at the top of inside bank (L) 457 ft. 159.0 ft.
5. Width at top inside slope (W) 229 ft. 110.0 ft.
6. Length at midpoint of sludge layer Lm = L-2S(D-(T/2)) 398.5 ft. 107.8 ft.
7. Width at midpoint of sludge layer Wm= W-2S(D-(T/2))
8. Volume of sludge (Vs) Vs=Lm Wm T
9. Volume in gallons: Vs9=V*7.5 gal./ft3.
10. Thickness of existing liquid tmt. zone (Y)
170.5 ft. 58.8 ft.
169,860 ft3 29,807 ft3
1,273,950 gal. 223,555 gal.
3.5 ft 2:7 ft
11. Thickness of total treatment zone (Z) Z= T+Y 6 ft 7.4 ft
12. Length at midpoint of total tmt. zone LZ = L-2(S)(D-(Z/2) 409 ft. 115.9 ft.
13. Width at midpoint of total tmt. Zone WZ = W-2(S)(D-(ZJ2) 181 ft. 66:9 ft
14. Volume of total treatment zone (Vz) Vz = LZ WZZ 444,174 ft3 • 57,405 ft3
15. Ratio ( R) of sludge layer volume to total Treatment Volume
tk = Vs;Vz 0.38 0.52
If the ratio R exceeds 0.50, than a sludge Plan of Action may be required. Check with DWQ for information
on filing the Plan of Action.
Note: If the lagoon has a designed sludge storage volume (DSSV), subtract that volume from both the volume
of sludge (Vs) (Item 8) and from the volume of total treatment zone (Vz)"(Item 14), and take the ratio.
Then, R = (Vs-DSSV) / (Vz - DSSV)
Example: If DSSV = 85,000 ft3, then R = (169,860 - 85,000) / (447,174 - 85,000) = 84,860 / 362,174 = 0.24.
16. Design sludge storage volume (DSSV) ' 85,000
17. Ratio (R) of sludge layer volume to treatment volume adjusted
for designed sludge storage volume 0.24 0.52