090057_POA Sludge Reduction_20220623

PLAN OF ACTION (PA) FO LAGOON SLUDGE REDUCTION
Facility Number:
Facility Name:
Certified Operator Name: `' �` b Operator #:
**Attach a copy of Lagoon Sludge Survey Form and volume worksheets
Note: A certified Sludge Management Plan may be submitted in lieu of this POA.
County:
Lagoon 1
Lagoon 2
Lagoon 3
Lagoon 4
Lagoon 5
Lagoon 6
a. Lagoon Name/ Identifier
b. Total Sludge Depth (ft)
`.._.
c. Sludge Depth to be
Removed for Compliance
(ft)
�A: r_
d. Sludge Volume to be
Removed (gallons)
I "
� ` P
e. Sludge PAN
(Ibs/1000 gal)
f. Liquid PAN
(Ibs/1000 gal)
g. PAN of Sludge (Ibs)
(d x e)/1000
Compliance Timeframes:
If the sludge level is equal to or higher than the stop pump level of the lagoon or if the sludge level
results in an elevated waste analysis, a sludge management plan that meets the requirements of SB
Interagency Group Guidance Document 1.26 must be prepared by a technical specialist and submitted to
DWR 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
within 90 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, DWR may require the owner to develop a sludge management plan that meets the
requirements of SB Interagency Group Guidance Document 1.27.
SPOA 9-15-2016 Page 1 of 3

NARRATIVE: 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 to be used.
Sludge Management Guide:
Lagoon evaluation data developed by NCSU and a review of lagoon management records of
several lagoons showed that treatment capacity of the swine lagoons evaluated in NC 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.
• There is no noticeable increase in lagoon odor.
• Nutrients land applied from the lagoon are properly accounted for in the application plan
(WUP)
Sludge 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.
• Other items as required by DWQ.
I hereby certify 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. I 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.
Sludge Survey Date: Compliance Due Date:
Phone:
Facility Owner/Manager (print)
Date:
Facility .caner/Manager (signature)
NPDES Permitted Facilities
Return this form to:
Animal Feeding Operations Program
NC Division of Water Resources
1636 Mail Service Center
Raleigh, NC 27699-1636
SPOA 9-15-2016 Page 2 of 3
State Permitted Facilities
Return this form to:
NC Division of Water Resources
at the appropriate Regional Office
(see following page)

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Appendix I. Lagoon Sludge Sui-vey Forni
A. Farm Permit cxDvVQIdentification Number AVV5090057
Bev�tkzn
B. Lagoon identification Clay Hill NuraeCy Stop Q8. 7
C. Person(s)Taking Measurements Becky Spearmian and 'RomoW.8uoden start. 1007
[l 'Date of �oasuren�mt 65/3/2.2_ 2
E_ Met hoda/Oevices Used feirk&aaaurennent of:
a, Distance fnonthe lagoon liquid sudar.letothe top ofthe sludge layec
remoesona./'bouber
b. Distance from the lagoon liquid surface tothe bnttmn(aoi|) of the lagoon.
c. Thickness of the sludge layer if making a direct measurement with "coree sampler".
F Lagoon Surface Area (usingdimensionsat insidletop ofbonk)� _ 0.5 (acres)
(Oraw a sketch of the lagoon ono separate sheet, list dinenoiona, and calculate surface area. The lagoon
may have been built different than designed, so nleasurements should be made.)
G. Esdm.am*nunVzerofsampling points:
a. Leas than 1.33anree: Use points
b. If more than 1.33 ao. _acres x 6 = . with naximumof24.
(Using sketch arid dimensions, dievelop a uniform grid that has the same iiunnber of interseictions as t-he
esumatedlnurnmer c)fsampling points, needed. wurnl:e�rthe intersec:tion points onthe |ag(:on grid sothat uata
recorded at each cai-, be easily ri-i atched.)
H. Conduct sludge Survey and record data on "Sludge, Survey Data Sheet" (Appendix 2). Also, at the
|oomumm at the pump intahe, take measurements of distance from liquid surface u»top oY 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 ofthe survey, also measure the. dis"Camcofnon the Maximum Liquid Level tothe. Present Liquid
Level �rneaSUre at the. lagoon gauge pole): 31-19
J. Determine the distance from the top ofbank tuthe MeximumLiquid Leve
K. Determine the distance from the Maximum Liquid to the Mh imumUquid level -
use
L Calculate the diotauoe fnzm'the present liquid surface |evei to the Minimum Liquid LeveA
(item K Minm. Item 1, assurning the present liquid level is below the Maximurn Liquicj Level)
M, Record from the Smclge Survey Data Sheet the distance fnnnthe present liquid audaoe bme| tothe
lagoon bottom (averacle for all the measureinent points)
N. Recmd frorn the Sludlge Survey Data Sheet the distance from the Present liquid surface leveltnthe tc)p
ofthe, sludge laver (average for aUthe n-ieasunementpoima)-
O. Record fromthe Sludge Survey Data Sheet the average thickness ofthe. sludge layer:
P. Co|cu|atethe thickness ofthe existing Liquid Treatment Zone(Ivam Nmimus /m*m L).
O. If Item <J is greater than Item P' proceed to the Worhsheet fcw Sludge Volume: and Treatment vcxmne.
If Itern 0 is equall to or less than Item P, you do not have to determine VOlUrnes.
1.0
1J
2.0
1�D
g�7
4.2
5'5
32
Completed by: Becky Speemnanand Ronald Sooden
Print Name/Signature
Oate-

Appendix 2. Sludge Survey Data Sheet*
Lagoon Identification Gay Hill
Completed by:
Becky Spearman and Ronald Gooden
Print Name
Signature
Date:
6/3/22
(A)
Grid Point
No.
(B)
Distance from liquid surface
to top of sludge
(C)
Distance from liquid surface
to lagoon bottom (soil)
(C)-(B)
Thickness of sludge layer
Ft. & in.
Ft. (tenths)
Ft. & in.
Ft. (tenths)
Ft. & in.
Ft. (tenths)
1
2.9
0.0
2
3.6
0.0
3
7.3
0.0
4
6.5
0.0
5
3.0
0.0
6
3.0
0.0
7
4.2
0.0
8
3.4
0.0
9
0.0
10
0.0
0.0
11
0.0
0.0
0.0
12
0.0
0.0
0.0
13
0.0
0.0
0.0
14
0.0
0.0
0.0
15
0.0
0.0
0.0
16
0.0
0.0
0.0
17
0.0
0.0
0.0
18
0.0
0.0
0.0
19
0.0
0.0
0.0
20
0.0
0.0
0.0
21
0.0
0.0
0.0
22
0.0
0.0
0.0
23
0.0
0.0
0.0
24
0.0
0.0
0.0
Number of
ints with readings
0 X
0.0
X X
0.0
Average
of points
X X
4.2
X X
9.7
X X
5.5
At pump
intake
4.0
X X X X X X
*AII Grid Points and corresponding sludge layer thicknesses must be shown on a sketch attached to this
Sludge Survey Data Sheet.

Appendix 3. Workahaet for o|udgo mdunna and treatment vo ume
Clay Hill
The average thickness ofthe sludge layer and the thickness of the existing iiquid (sludge -free', treatment zone are deten-nined
fromthe infonnetion on the Legnon Sludge Suwey Form( |tems Oand P. respectively". in this examplle, the average sludge
layer thickness is 2.5feet and the existing liquid treatment zone is 3.5 feet. If the lagoon has m designed u|udQestorage vo!mme.
see notes mtend ofthe .worksbeet. The dimensions of the. lagoon as measured and the side slop-- are needed
for calculations o/sludge vo|ume and of total treatment vo)uma. if the lagoon is a atsnderd geonnatriu shapo, the sludge
volume and the teatmentvolume in the lagoon can be. estimated by using standard' equmtiona For eppmximatovo|umea
ofrectangular lagoons with constant sidle Slope. calculate, /mnigth ondwxdlh at the midpoint of the /syer, and muit|n|y ,-jy |ayer
thickness to c-a|ou\ate layer volume, as ahnmm In the example. For ineAu|ar shapes, convert the total aui-face area to a square;
ornectanguiar shape. For exact volumes for lagoons mith constant side slope, the ''Priomo|da| Equations" may be used.
1 Average sludge LayerThickneao (-I-)
2. Depth ofthe lagoon fromtop ufbank tobottom soil au-.1aco([)
3. Slope = Horizontal/ vertical side slope (S)
4. Length at the top oY inside bank (L)
6. vWdth ot top inside slope (VV)
& Length at midpoint ofsludge layer L== L-2S(D-(T/2))
7Width at midpointofa!udQe layer VV,=��2S([�(T72))
3 Voiumeofo(udge(Va) Vs=L,.ft,T
8. Volume in gallons: Vas=V°75gui/fta
10. Thickness ofexisting liquid tnu. zone(Y)
11. Thickness of total treatment zone (Z) Z= T+Y
12. Length at midpoint of total tnt. zone L,= L-2(S)(Q-(7-72)
13. Width at midpoint of total tnnt. Zone W. =V,1-2(S)(D-(ZY2)
14. Voiumenftotal treenent,Zone (V-.) Vz=L=mV,Z
15. Ratio (R)ofsludge. layer vo\umetototal Treatment Vo/ume
Example
You,Laox)n
11 ft. 12.4
3 3.0
457 ft. 180.0
229 JL 134.0
398.5 ft. 102.1
170.5
ft. 78.1
1.273.950 cid.
__3,5 _ft
8 ft
42.734
3.2
8.7
409 ft. 111J
_
1181 ft. 85.7
If the ratio Rexceeds O.SV^ than u sludge Plan ofAction may b* required. Check with MW fo« information
on filing ihe Plan of Action.
Note If the lagoon has a designed sludge storage vollume-- (DSSV), subtract that volume from both the volurne
Of Sludge (Vs) (/tom8) and from the volume of utall treatment 7one (Vt) (Item 14), and take the ratio.
Then. R=(Vs-DSBV)/ (Vz- C8SV)
Example: if DS8V = 85,OOOft� then R= (189.880 85i000)/ (447.174 - 85.000) = 84.860 / 382.174 = 0.24.
Des an sludge storage volun-ie (DSSV`
17, Ratio (R)ofakdgehayervolumetntreatment vO!umeadknted
for designed sludge storage VO!Urllf�
O'24 0�51