770013_Sludge Survey (Reporting)_20240422

RECEIVED
APR 2 2 2024
ATTN: NC DEO/DWR
DENR REPRESENTATIVE Central Office
ANIMAL FEEDING OPERATIONS UNIT
1636 MAIL SERVICE CENTER
RALEIGH,N.C. 27699-163 6
FROM:
DAVID W. SULLIVAN
342 LINWOOD LANE
ROCKINGHAM,N.C. 28379
PERMIT NUMBER AWS770013
ATTACHED IS A COPY OF MY MOST RECENT
SLUDGE SURVEY. THIS SURVEY SHOWS I
CURRENTLY HAVE 4.9 FEET OF PERMANENT
LIQUID TREATMENT STORAGE IN MY
ANIMAL WASTE LAGOON,WHICH IS MORE
THAN THE REQUIRED FOUR FEET. BASED ON
THESE FINDINGS I REQUEST TO BE EXEMPT
FROM FURTHER SLUGDE SURVEYS FOR THE
LIFE OF MY CURRENT PERMIT, OR THE
NUMBER OF YEARS YOU AND YOUR OFFICE
DEEM ADEQUATE. I LOST MY CONTRACT
WITH PURVIS FARMS WHEN THEY WENT
BANKRUPT. I HAVE NO HOGS ON THE
PROPERTY AT THIS TIME OR PLAN TO RE-
STOCK IN THE NEAR FUTURE. WE ARE IN

THE PROCESS OF TRYING TO MAKE A
DECISION ON HOGS IN THE FUTURE OR NOT.
THANKS FOR YOUR CONSIDERATION OF
THIS REQUEST.
'�D DATE: -/Sz

Sheetl I Sheet2
Appendix 1.Lagoon Sludge Survey Form Revised August 2008
A.Farm Permit or DWQ Identification Number David Sullivan
B.Lagoon Identification Lagoon 1
C.Person(s)Taking Measurements Anthony Growe
D.Date of Measurement 4/4/24
E.Methods/Devices Used for Measurement of:
a.Distance from the lagoon liquid surface to the top of the sludge layer.
Secchi Disk
b.Distance from the lagoon liquid surface to the bottom(soil)of the lagoon.
Homemade Sludge Judge
c.Thickness of the sludge layer if making a direct measurement with"core sampler".
NA
F.Lagoon Surface Area(using dimensions at inside top of bank): <1(.5) (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= 8 ,with maximum of 24.
(Using sketch and dimensions,develop a uniform grid that has the same number of intersections as the
estimated 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 2.6 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): 34-25=9/12=0.75 0.8
J.Determine the distance from the top of bank to the Maximum Liquid Level 2.1
(use lagoon management plan or other lagoon records) 25/12=2.08
K.Determine the distance from the Maximum Liquid to the Minimum Liquid level: 2.0
(use lagoon management plan or other lagoon records)
L.Calculate the distance from the present liquid surface level to the Minimum Liquid Level 1.3
(Item K Minus Item 1,assuming the present liquid level is below the Maximum Liquid Level)
M.Record from the Sludge Survey Data Sheet the distance from the present liquid surface level to the
lagoon bottom(average for all the measurement points) 9.8
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): 6.2
O.Record from the Sludge Survey Data Sheet the average thickness of the sludge layer: 3.6
P.Calculate the thickness of the existing Liquid Treatment Zone(Item N minus Item L): 49
Q.If Item O is greater than Item P,proceed to the Worksheet for Sludge Volume and Treatment Volume.
If Item O is equal to or less than Item P,you do not have to determine volumes.
Completed by: Anthony Growe Date: 4/4/24
Print Name/Signature
Appendix 2. Sludge Survey Data Sheet' Revised August 2008
Lagoon Identification Lagoon 1
Completed by: A.Growe 4/4124
Print Name Signature
(A) (B) (C) (C)-(B)
Grid Point Distance from liquid surface Distance from liquid surface Thickness of sludge layer
Mn I to fnn of h.eino I to lannnn hnft—1—M

Ft. &in. Ft.(tenths) Ft. &in. Ft.(tenths) Ft. &in. Ft.(tenths)
1 7.5 11.5 4.0
2 10.0 13.0 3.0
3 10.5 12.5 2.0
4 6.0 11.0 5.0
5 3.5 7.0 3.5
6 3.5 7.5 4.0
7 4.0 7.0 3.0
8 4.5 9.0 4.5
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
Number of points with readings 8.0 X X 8.0 X X 8.0
Average of X X 6.1875 X X 9.8125 X X 3.625
points
At pump 0.0 X X X X X X
intake
'All Grid Points and corresponding sludge layer thicknesses must be shown on a sketch attached to this
Sludge Survey Data Sheet.
Appendix 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 O 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.If 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 rectangular shape.For exact volumes for lagoons with constant side slope,the"Prismoidal Equations"may be used.
Example Your Lagoon
1.Average sludge Layer Thickness(T) 2.5 ft. 3.6 ft.
2.Depth of the lagoon from top of bank to bottom soil surface(D) 11 it. 12.7 ft.
3.Slope=Horizontal/vertical side slope(S) 3 2.5
4.Length at the top of inside bank(L) 457 ft. 259.0 ft.
5.Width at top inside slope(W) 229 ft. 90.0 ft.