670039_Permit Renewal Application 2019_20190410

State of North Carolina
Department of Environmental Quality
Division of Water Resources
Animal Waste Management Systems
Request for Certification of Coverage
Facility Currently covered by an Expiring Sate Non -Discharge General Pennit
On September 30, 2019, the North Carolina State Non -Discharge. General Permits for Animal Waste Management Systems will
expire. As required by these permits, facilities that have been issued Certificates of Coverage to operate under these State
Non -Discharge General Permits must apply for renewal at least 180 days prior to their expiration date. Therefore, all applications
must be received by the Division of Water Resources by no later than April 3, 2019.
Please do not leave any question unanswered. Please verify all information and make any necessary corrections below.
Application Hurst be signed and dated by the Permirtee.
1. Farm Number: 67-0039 Certificate Of Coverage Number: AWS670039
2. Facility Name: Dewavne Silence Farm
3. Landownees Name (same as on the Waste Management Plan): pewayne Silence
4. Landowner's Mailing Address: 538 Haws Run Rd
City: Jacksonville State: NC Zip: 28540
Telephone Number: 910-353-4760 Ext. E-mail:
5. Facility's Physical Address: 538 Haws Run Rd
City: Jacksonville .State: NC Zip: 2854Q
6. County where Facility is located: Onslow
7. Farm Manager's Name (if different from Landowner):
8. Fazm Manager's telephone number (include area code):
9. Integrator's Name (if there is not an Integrator, write "None"): Murphy -Brown LLC
10. Operator Name (OIC): Isiac Dewavne Silence Phone No.: 910-353-476Q OIC il: 16262
11
Lessee's Name (if there is not a Lessee, write "None"):
12. Indicate animal operation type and number:
Current Permit: Operations Type
Swine - Feeder to Finish
Operation Types•
Allowable Count
2,448 •
Swine Cattle Dry Poultry Other Types
Wean to Finish Dairy Calf Non Laying Chickens Horses - Horses
Wean to Feeder Dairy Heifer Laying Chickens Horses - Other
Farrow to Finish Milk Cow Pullets Sheep - Sheep
Feeder to Finish Dry Cow Turkeys Sheep - Other
Farrow to Wean Beef Stocker Calf Turkey Pullet
Farrow to Feeder Beef Feeder
Boar/Stud Beef Broad Cow Wet Poultry
Gilts Other Non Laying Pullet
Other Layers

13. Waste Treatment and Storage Lagoons (Verify the following infommtion is accurate and complete. Make all necessary
corrections and provide missing data.)
Structure
Name
Estimated
Date
Built
Liner Type
(Clay, Synthetic,
Unknown)
Capacity
(Cubic Feet)
Estimated
Surface Area
(Square Feet)
Dcsiga Freeboard
"Redline"
(Inches)
LAGOON#I
/9R V
e-tar
50,3 rcs c6
--1 s000
2t,(o e-
Mail one (1) copy of the Certified Animal Waste Management Plan (CAWMP) with this completed and signed application
as required by NC General Statutes 143-215.10C(d) to the address below.
The CAWMP must include the following components:
1. The most recent Waste Utilization Plan (WUP), signed by the owner and a certified technical specialist containing:
a. The method by which waste is applied to the disposal fields (e.g. irrigation, injection, etc.)
b. A map of every field used for land application (for example: irrigation map)
c. The soil series present on every land application field
d. The crops grown on every land application field
e. The Realistic Yield Expectation (RYE) for every crop shown in the WUP
f. The maximum PAN to be applied to every land application field
g. The waste application windows for every crop utilized in the WUP
h. The required NRCS Standard specifications
2. A site map/schematic
3. Emergency Action Plan
4. Insect Control Checklist with chosen best management practices noted
5. Odor Control Checklist with chosen best management practices noted
b. Mortality Control Checklist with selected method noted - Use the enclosed updated Mortality Control Checklist
7. Lagoon/storage pond capacity documentation (design,. calculations, etc.) Please be sure the above table is accurate and
complete. Also provide any site evaluations, wetland detemiinations, or hazard classifications that may be applicable to
your facility.
8_ Operation and Maintenance Plan
if your CAWMP includes any components not shown on this list, please include the additional components with your submittal.
(e.g. composting, digesters, waste transfers, etc.)
As a second option to mailing paper copies of the application package, you can scan and email one signed copy of the
application and all the CAWMP items above to: 2019PermttRenewal®ncdenngov

I attest that this application has been reviewed by me and is accurate and complete to the best of my knowledge. 1 understand That,
if all required parts of this application are not completed and that if all required supporting information and attachments are not
included, this application package will be returned to me as incomplete.
Note: In accordance with NC General Statutes 143-215.6A and 143-215,6B, any person who knowingly makes any false statement,
representation, or certification in any application may be subject to civil penalties up to S25,000 per violation. (18 U.S.C.
Section 1001 provides a punishment by a fine of not more than S10,000 or imprisonment of not more than 5 years, or both for
a similar offense.
Printed Name of Signing Official (Landowner, or if multiple Landowners all landowners should sign. If Landowner is a
corporation, signature should be by a principal executive officer of the corporation):
Name: A- -' / IAA/ er
Title:
iiWvu
Signature:c7 • , i -.-+_ Date: / 18—)
Name: Title:
Signature: Date:
Name: Title:
Signature: Date:
TIIC COMPLETED APPLICATION SHOULD BE SENT TO THE FOLLOWING ADDRESS:
NCDEQ-DWR
Animal Feeding Operations Program
1636 Mail Service Center
Raleigh, North Carolina 27699-1636
Telephone number: [phone]
E-mail: [e-mail]
FORM: RENEWAL -STATE GENERAL 02/2019

Operator: Dewayne Silence County: Onslow Date: 06/17/08
Has the site evaluation been completed & approved: Yes
1. AVERAGE LIVE WEIGHT (ALW)
1417
0 sows (farrow to finish) x lbs. = 0 lbs
522
0 sows (farrow to feeder) x lbs. = 0 lbs
135
2448 head (finishing only) x lbs. = 330480 lbs
433
0 sows (farrow to wean) x lbs. = 0 lbs
30
0 head (wean to feeder) x lbs. = 0 lbs
Describe other : 0 lbs
2. MINIMUM REQUIRED TREATMENT VOLUME OF LAGOON
Volume =
3. STORAGE VOLUME FOR SLUDGE ACCUMULATION
Volume =
4. TOTAL DESIGNED VOLUME
Inside top length (feet)
Inside top width (feet)
Top of dike elevation (feet)
Bottom of lagoon elevation (feet)
Freeboard (feet)
Emergency spillway depth of flow(feet)
Side slopes (inside lagoon)
Total design volume using prismoidal formula
SS/END1
Total Average Live Weight = 330480 lbs
cubic ft
330480 (includes 0 cu. ft. add. treat. vol
83232.0 cubic feet
300.0
250.0
50.50
40.50
1.00
0.00
3.0 : 1

AREA OF TOP
LENGTH * WIDTH =
AREA OF BOTTOM
LENGTH * WIDTH =
AREA OF MIDSECTION
LENGTH * WIDTH * 4
SS/END2 SS/SIDE1 SS/SIDE2 LENGTH WIDTH DEPTH
3.0 3.0 3.0 3.0 294.0 244.0 - 9.00
294.0 244.0 71736 (AREA OF TOP)
240.0 190.0 45600 (AREA OF BOTTOM)
267.0 217.0 231756 (AREA OF MIDSECTION * 4)
CU. FT. = [AREA TOP + (4*AREA MIDSECTION) + AREA BOTTOM]
71736
5. TEMPORARY STORAGE REQUIRED
DRAINAGE AREA:
Lagoon (top of dike)
( Length
DEPTH/6
231756
45600
Total Designed Volume Available = 523638 CU.
* Width ) + Surface area of connecting waste facility
300.0 250.0 0.0
75000.0 square feet
Buildings (roof and lot water) or impervious area
TOTAL
DA
Design temporary storage period to be
0.0 square feet Describe this area.
75000.0 square feet
riod to
b e 180 days.

5A. Volume of waste produced
Feces & urine production in gal./day per 135 lb. ALW 1.37
Volume =
Volume =
5B. Volume of excess water
Volume =
Volume =
- 5C. Volume of rainfall in excess of evaporation
330480 lbs. ALW/135 lbs. ALW * 1.37 gal/day 180 days
603677 gals. or 80705.5 cubic feet
2215.6 gallons/day * 180 days storage/7.48 gallo
per
53317.5 cubic feet
Use period of time when rainfall exceeds evaporation by largest amount.
180 days evaporation = 7.0 inches
180 days rainfall = 0.0 inches
Volume = 0.0 in * DA / 12 in. per ft. = 0 cubic feet rui
Volume = 7.0 in * lagoon DA/12 in./ft = 43750 cubic feet ev<
Volume = -43750 cubic feet
5D. Volume of 25 year 24 hour storm
Volume of "Heavy Rain"
Volume =
Volume =
5E. Additional volume as follows:
8.0 in.
0.0 in.
8.0 inches / 12 inches per foot * DA
50000 cubic feet
TOTAL REQUIRED TEMPORARY STORAGE
5A. 80705 cubic feet
5B. 53317 cubic feet
5C. -43750 cubic feet
5D. 50000 cubic feet

6. SUMMARY
Temporary storage period ----- ->
Rainfall during wettest period of storage-=>
Evaporation during storage period >
25 year - 24 hour rainfall===— >
Heavy rain===-------_
Freeboard ----
Side slopes
Inside top length
Inside top width >
Emergency spillway elevation(if planned)===>
Top of dike elevation
Bottom of lagoon elevation
Top of sludge elevation =___
Total required volume — ---- _->
Actual design volume
Seasonal high watertable elevation (SHWT) __>
Stop pumping elev. > 5arr
Must be > or = to the SHWT elev. >
Must be > or = to min. req. treatment el.=>
Min. Required treatment volume-------==m=>
Volume at stop pumping elevationre
>
Start pumping elev.-=- ===--===- > &°
Must be at bottom of F.B. & 25 yr. rainfall 8 heavy rain
Act. vol. less 25 yr. and heavy rainfall= _>
Volume at start pumping elevation==
Required volume to be pumped -
Actual volume planned to be pumped===--=_>
Min. thickness of soil liner when required==>
5E. 0 cubic feet
TOTAL 140273 cubic feet
_____ _>
7. DESIGNED BY: APPROVED BY
DATE: DATE:
180
0.0
7.0
8.0
0.0
1.00
3.0
300.0
250.0
49.50
50.50
40.50
0.00
553985
523638
0.00
0.00
0.00
46.50
330480
0
48.70
473638
467276
90273
995315
1.3
days
inches
inches
inches
inches
feet
: 1
feet
feet
feet
feet
feet
feet
cu. ft.
cu. ft. *
feet
feet
feet
feet
cu. ft.
cu. ft.
feet
ft.
cu. ft.
cu. ft.
cu. ft.
feet
*
*

Nutrient Management Plan For Animal Waste Utilization
07-15-2005
This plan has been prepared for:
Dwayne Silance Farm
Dwayne Silance
546 Haws Run Road
Jacksonville, NC 28540
This plan has been developed by:
Donna Card
Onslow SWCD
Onslow County Multipurpose Complex
4028 Richlands Hwy
Jacksonville,il�N�C 28540
9 0-45� U''v�G� 3
Developer Signature
Type of Plan: Nitrogen Only with Manure Only
Owner/Manager/Producer Agreement
I (we) understand and agree to the specifications and the operation and maintenance procedures
established in this nutrient management plan which includes an animal waste utilization plan
for the farm named above. I have read and understand the Required Specifications concerning
animal waste management t(sat are included with this plan.
•7. ,9 ?1"--
Signs (owner) Date
Signature (manager or producer) Date
This plan meets the minimum standards and specifications of the U.S. Department of Agriculture
- Natural Resources Conservation Service or the standard of practices adopted by the Soil and
Water Conservation Commission.
Plan Approved By SA& -72R
Technical Specialist Signature
7Z
Date
950736 Database Version 3.1 Date Printed: 07-15-2005 Cover Page 1

Nutrients applied in accordance with this plan will be supplied from the
following source(s):
Commercial Fertilizer is not included in this plan.
S7
Swine Feeder -Finish Lagoon Liquid waste generated 2,269,296 gals/year by a 2,448
animal Swine Finishing Lagoon Liquid operation. This production facility has waste
storage capacities of approximately 180 days.
Estimated Pounds of Plant Available Nitrogen Generated per Year
Broadcast
5227
Incorporated
8976
Injected
9885
Irrigated
5681
Max. Avail.
PAN (lbs) *
Actual PAN
Applied (lbs)
PAN Surplus/
Deficit (lbs)
Actual Volume
Applied (Gallons)
Volume Surplus/
Deficit (Gallons)
Year 1
5,681
8075
-2,394
3,225,461
-956,165
Note: In source ID. S means standard source. U means user defined source.
* Max. Available PAN is calculated on the basis of the actual application method(s) identified in the plan for this sourc
950736 Database Version 3.1 Date Printed: 07-15-2005 Source Page 1 of 1

Narrative
N grandfathered and based on old plan.
Small grain must be harvested by April 7th.
950736 Database Version 3.1 Date Printed: 07-15-2005 Narrative Page 1 of 1

Planned Crops Summary
Tract
Field
Total
Acres
Useable
Acres
Leaching
Index
Soil Series
Crop Sequence
RYE
Hybrid neamudagrasa Hay
6.5 Tom
1143
Z-17
1.55
1.35
N/A
Norfolk
Small Grain Ovaseed
1.0 Tom
Hybrid Bermrdagrass Hay
6.5 Tom
1143
Z-1S
1.55
1.55
N/A
Norfolk
Small Grain Overaeed
1.0 Tom
Hybrid nermrdagram Hay
6.5 Tons
PLAN TOTALS: 177.56 24.11
LI ':=
"i Potential Leaching '
• Technical Guidance
< 2
Low potential to contribute to soluble
nutrient leaching below the root zone.
None
>_ 2
<=10
Moderate potential to contribute to
soluble nutrient leaching below the root
zone.
Nutrient Management (590) should be planned.
> 10
Bighpotential tocontribute tosoluble
nutrient leaching below the root zone.
Nutrient Management (590) should be planned. Other conservation practices that improve the
sorts available water holding capacity and improve nutrient use efficiency should be
considered. Examples are Cover Crops (340) to scavenge nutrients, Sod -Based Rotations
(328), Long -Term No -Till (778), and edge -of -field practices such as Etter Strips (393) and
Riparian ForestBuffers (391).
950736 Database Version 3.1 Date Printed 7/15/2005
NOTE: Symbol * means user entered data
PCS Page 2 of 2

The table shown below provides a summary of the crops or rotations included in this plan for each field. Realistic Yield estimates
are also provided for each crop in the plan. In addition, the Leaching Index for each field is shown, where available.
Planned Crops Summary
Tract
Field
Total
Acres
Useable
Acres
Leaching
Index
Soil Series
Crop Sequence
RYE
1143
L-01
1.15
1.15
N/A
Autryville
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
5.5 Toos
1143
Z 02
0.96
0.96
N/A
Autryville
Small Grain Overseed
1.0 Tons
hybrid Bermudagrass Hay
5.5 Tons
1143
Z03
0.94
0.94
N/A
Autryville
Small Grain Overseed
1.0 Toms
Hybrid Bermudagrass Ilay
5.5 Tons
1143
Z-04
0.83
0.83
N/A
Autryville
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
5.5 'ron
1143
Z-05
0.94
0.94
N/A
Autryville
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
5.5 Tons
1143
Z-06
0.94
0.94
N/A
Autryvillc
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
5.5 Tons
1143
Z-07
1.29
1.29
N/A
Autryville
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
5.5 Tons
1143
Z-08
1.48
1.48
N/A
Autryville
Small Grain Overseed
1.0 Tons
llybrid Bermudagrass Hay
5.5 Tons
1143
Z,-09
1.48
1.48
N/A
Autryville
Small Grain Overseed
1.0 Tons
•
Hybrid Bermudagrass Hay
5.5 Tons
1143
Z-10
1.11
1.11
NIA
Autryvillc
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
5.5 Tons
1143
Z-11
1.94
1.94
N/A
Autryville
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
5.5 Tons
1143
Z-12
1.55
1,55
N/A
Autryville
Small Grain Overseed
1.0 Toms
Hybrid Bermudagrass Hay
5.5 Tons
1143
Z13
155.00
1.55
N/A
Autryville
Small Grain Overseed
1.0 Tons
Hybrid Bernmdagrass Hay
5.5 Tons
1143
Z-14
1.74
1.74
N/A
Norfolk
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
6.5 Tons
1143
Z-15
1.55
1.55
N/A
Norfolk
Small Grain Overseed
1.0 Tons
Hybrid Bermudagrass Hay
6.5 Tons
1143
Z-16
1.55
1.55
N/A
Norfolk
Small Grain Overseed
1.0 Tons
950736
Database Version 3.1
NOTE: Symbol * means user entered data
Date Printed 7/15/2005
PCS Page 1 of 2

The Waste Utilization table shown below summarizes the waste utilization plan for this operation. This plan provides an estimate of the number of acres of cropland needed to u
the nutrients being produced The plan requires consideration of the realistic yields of the crops to be grown, their nutrient requirements, and proper timing of applications to
maximize nutrient uptake.
This table provides an estimate of the amount of nitrogen required by the crop being grown and an estimate of the nitrogen amount being supplied by manure or otherby-produc
commercial fertilizer and residual from previous crops. An estimate of the quantity of solid and liquid waste that will be applied on each field in order to supply the indicated quant
of nitrogen from each source is also included. A balance of the total manure produced and the total manure applied is included in the table to ensure that the plan adequately provide
for the utilization of the manure generated by the operation.
Waste Utilization Table Year 1
Tract
Field
Somee
ID
Soil Series
Total
Acres
Use.
Acres
Crop
RYE
Applic
Period
Nitrogen
PA
Nutrient
Req'd
Obs/A)
Comm.
Fat
Nutrient
Applied
(lbs/A)
Rea.
(lbs/A)
Apulia.
Method
Manure
PA
Nutrient
Applied
(Ibs/A)
Liquid
MenureA
pplied
(acre)
Solid
Manure
Applied
(acre)
Liquid
Manure
Applied
(Field)
Solid
Mmme
Applied
(Field)
N
N
N
N
1000
gel/A
Tons
1000 gals
tons
1143
Z-01
S7
Autryville
1.15
1.15
Small Grain Overseed
1.0 Tons
10/1-3/31
50
0
0
brig.
50
19.97
0.00
22.97
0.01
1143
Z-01
97
Autryville
1.15
1.15
Hybrid Bernesdagrass Hay
5.5 Tons
3/1-9/30
*275
0
0
]mg.
275
109.85
0.00
126.32
0.04
1143
Z-02
37
Autryville
0.96
0.96
Small Grain Overseed
1.0 Tom
10/1.3/31
50
0
0
brig
50
19.97
0.00
19.27
0.0(
1143
Z-02
S7
Autryville
0.96
0.96
Hybrid Beamudagrass Hay
5.5 Tons
3/1-9/30
*275
0
0
Brig.
275
109.85
0.00
106.00
0.0(
1143
Z03
S7
Autryville
0.94
0.94
Small Grain Overaeed
1.0 Tons
10/1-3/31
50
0
0
Irrig.
50
19.97
0.00
18.85
0.0(
1143
Z-03
S7
Autryville
0.94
0.94
Hybrid Benwdagrass Hay
5.5 Tons
3/1-9/30
*275
0
0
brig.
275
109.85
0.00
103.70
0.0(
1143
Z-04
37
Autryville
0.83
0.83
Small Grain Oveaseed
1.0 Tons
10/1-3/31
50
0
0
Brig.
50
19.97
0.00
16.50
0.01
1143
Z-04
87
Autryville
0.83
0.83
Hybrid Bennudagrass Hay
5.5 Tom
3/1-9/30
*275
0
0
Irrig
275
109.85
0.00
90.73
0.0(
t3
Z-05
37
Antryville
0.94
0.94
Small Grain Overseed
1.0 Tons
10/1-3/31
50
0
0
Irrig.
50
19.97
0.00
18.85
0.0(
1143
Z-05
S7
Autryville
0.94
0.94
Hybrid Bennudagmss Hay
5.5 Tons
3/1-9/30
*275
0
0
Brig
275
109.85
0.00
103.70
0.01
1143
Z-06
S7
Autryville
0.94
0.94
Small Crain Oveteeed
1.0 Tom
10/1-3/31
50
0
0
Irrig.
50
19.97
0.00
18.85
0.0(
1143
Z 06
S7
Autryville
0.94
0.94
Hybrid Bennudagrass Hay
5.5 Tom
3/1-930
*275
0
0
brig
275
109.85
0.00
103.70
0.0(
1143
Z-07
S7
Autryville
1.29
1.29
Small Grain Overseed
1.0 Tom
10/1-3/31
50
0
0
Inig
50
19.97
0.00
25.76
0.0(
1143
Z-07
37
Autryville
1.29
1.29
Hybrid Bermudugrass Hay
5.5 Tom
3/1-9/30
*275
0
0
Irrig.
275
109.85
0.00
141.70
0.01
1143
Z-08
S7
Autryville
1.48
1.48
Small Grain Overseed
1.0 Tons
10/1-3/31
50
0
0
brig
50
19.97
0.00
29.56
0.01
1143
Z-08
37
Autryville
1.48
1.48
Hybrid Bennudagass Hay
5.5 Tons
3/1-9/30
*275
0
0
lnig.
275
109.85
0.00
162.57
0.0(
950736 Database Version 3.1
Date Printed: 7/15/2005
WUT Page 1 of 3

waste utilization table Year 1
Tram
Field
Source
ID
Soil Series
Total
Acres
Use.
Acres
Crop
RYE
Applie,
Period
Nitrogen
PA
Nutrient
Req'd
(lbs/A)
Comm.
Fert
Nutrient
Applied
(On/A)
Res.
(lbs/A)
Appfia
Method
Manure
PA
Nutrient
Applied
(Ibs/A)
Liquid
Menu eA
pplied
(acre)
Solid
Manure
Applied
(acre)
Liquid
Manure
Applied
(Field)
Solid
Manure
Applied
(Field)
N
N
N
N
1000
gd/A
Tone
1000 gals
tons
1143
Z-09
S7
Autryville
1.48
1.48
Small Grain Overseed
1.0 Tons
10/1-3/31
50
0
0
Irrig.
50
19.97
0.00
29.56
0.01
1143
Z-09
S7
Autryville
1.48
1.48
Hybrid Bermudagrass Hay
5.5 Tons
3/1.9/30
*273
0
0
brig
275
109.85
0.00
162.57
0.01
1143
Z-10
S7 .
Autryville
1.11
1.11
Small Grain Overeeed
1.0 Tom
10/1-3/31
50
0
0
Irrig
50
19.97
0.00
22.17
0.01
1143
Z-10
S7
Autryville
1.11
1.11
Hybrid Bemsudagrass Hay
5.5 Tons
3/1-9/30
*275
0
0
Irrig
275
109.85
0.00
121.93
0.01
3
Z-11
S7
Auttyville
1.94
1.94
Small Grain Overseed
1.0 Tom
10/1-3/31
50
0
0
brig
50
19.97
0.00
38.75
0.01
1143
Z-11
S7
Autryville
1.94
1.94
Hybrid Bemmdagrass Hay
5.5 Tons
3/1-9/30
*275
0
0
brig
275
109.85
0.00
2I3.10
0.04
1143
Z 12
S7
Autryville
1.55
1.55
Small Grain Overseed
1.0 Tons
10/1-3/31
50
0
0
brig
50
19.97
0.00
30.96
0.01
1143
Z•I2
S7
Autryville
1.55
1.55
Hybrid Ber mtdagrass Hay
5.5 Tons
3/1-9/30
*275
0
0
lrrig.
275
109.85
0.00
170.26
0.01
1143
Z-13
S7
Autryville
155.00
1.55
Small Grain Overeud
1.0 Tons
10/1-3/31
50
0
0
brig
50
19.97
0.00
30.96
0.01
1143
Z-13
S7
Autryville
155.00
1.55
Hybrid Bermudagrass Hay
5.5 Tons
3/1.9/30
*275
0
0
brig
275
109.85
0.00
170.26
0.01
1143
Z-14
S7
Norfolk
1.74
1.74
Small Grain Overseed
1.0 Tons
10/1-3/31
50
0
0
brig
50
19.97
0.00
34.75
0.01
1143
Z•14
87
Norfolk
1.74
1.74
Hybrid Bermudag ass Hay
6.5 Tons
3/1-9/30
*305
0
0
brig.
305
121.83
0.00
211.98
0,01
1143
Z-15
S7
Norfolk
1.55
1.55
Small Grain Overseed
1.0 Tom
10/1-3/31
50
0
0
lrrig.
50
19.97
0.00
30.96
0.01
1143
Z-15
S7
Norfolk
1.55
1.55
Hybrid Bernmdagrass Hay
6.5 Tons
3/1-9/30
*305
0
0
lrrig.
305
121.83
0.00
188.84
0.01
3
Z-16
S7
Norfolk
1.55
1.55
Small Grain Ovemeed
1.0 Tom
10/1-3/31
50
0
0
brig
50
19.97
0.00
30.96
0.01
1143
Z-16
S7
Norfolk
1.55
1.55
Hybrid Bermudagrass Hay
6.5 Tom
3/1-9/30
*305
0
0
brig.
305
121.83
0.00
188.84
0.01
1143
Z-17
S7
Norfolk
1.55
1.55
1.0 Tons
10/1-3/31
50
0
0
brig
50
19.97
0.00
30.96
0.01
Small Grain erseed
1143
Z-17
S7
Norfolk
1.55
1.55
Hybrid Bermudagrass Hay
6,5 Tons
3/1-9/30
*305
0
0
brig.
305
121.83
0.00
188.84
0.01
1143
Z-18
S7
Norfolk
1.55
1.55
Small Crain Ovetseed
1.0 Tons
10/1-3/31
50
0
0
brig.
50
19.97
0.00
30.96
0.01
1143
Z-18
S7
Norfolk
1.55
1.55
Hybrid Bennudagrass Hay
6.5 Tons
3/1-9/30
*305
0
0
brig
305
121.83
0.00
188.84
0.04
950736 Database Version 3.1
Date Printed: 7/15/2005
WUT Page 2 of 3

waste utilization lame Year 1
Tract
Field
Source
1D
Soil Series
Total
Ames
Use
Ames
Crop
RYE
Apple.
Period
Nitrogen
PA
Nutrient
Req'd
(Ibs/A)
Comm.
Fat.
Nutdmt
Applied
(lbe/A)
Res.
(lbs/A)
Appbc.
Method
Marne
PA
Nutrient
Applied
(lbs/A)
Liquid
MmmmA
pplied
(eme)
Solid
Manure
Applied
(we)
Liquid
Mamae
Applied
Odd)
Solid
Mature
Applied
(Field)
N
N
N
N
1000
gel/A
Tons
1000 gals
tons
Total Applied, 1000 gallon
3,225.46
j'v-`.u,�
Total Produced, 1000 gallons
2,269.30
Balance, 1000 gallons
-956.17
a;i�_. ,
...
Total Applied, tore
MO
0.0i
Total Produced,tons
h,;{" : -.
0.01
Delano:, tom
'»kv^:_,
0.04
Notes: 1. In the tract column, — symbol means leased, otherwise, owned.
950736 Database Version 3.1
2. Symbol * means user entered data.
Date Printed: 7/15/2005 WUT Page 3 of 3

The Irrigation Application Factors for each field in this plan are shown in the following table. Infiltration rate varies with soils. If
applying waste nutrients through an irrigation system, you must apply at a rate that will not result in runoff. This table pmvides
the maximum application rate per hour that may be applied to each field selected to receive wastewater. It also lists the maximum
application amount that each field may receive in any one application event.
Irrigation Application Factors
Tract
Field
Soil Series
Application Rate
(inches/hour)
Application Amount
(inches)
1143
Z-01
Autryville
0.60
1.0
1143
Z-02
Autryville
0.60
1.0
1143
Z-03
Autryville
0.60
1.0
1143
Z-04
Autryville
0.60
1.0
1143
Z-05
Autryville
0.60
1.0
1143
Z-06
Autryville
0.60
1.0
1143
Z-07
Autryville
0.60
1.0
1143
Z-08
Autryville
0.60
1.0
1143
Z-09
Autryville
0.60
1.0
1143
Z-10
Autryville
0.60
1.0
1143
Z-11
Autryville
0.60
1.0
1143
Z-12
Autryville
0.60
1.0
1143
Z-13
Autryville
0.60
1.0
1143
Z-14
Norfolk
*0.60
1.0
1143
Z-15
Norfolk
*0.60
1.0
1143
Z-16
Norfolk
*0.60
1.0
1143
Z-17
Norfolk
*0.35
1.0
1143
Z-18
Norfolk
*0.35
1.0
ncn,r)e o 1 n...., n.:_.,.a-rncPonnc 7ems n,.._.. 1 ... 1

The following Lagoon Sludge Nitrogen Utilization table provides an estimate of the number of acres needed for sludge
utilization for the indicated accumulation period. These estimates are based on average nitrogen concentrations for each source,
the number of animals in the facility and the plant available nitrogen application rates shown in the second column.
Lagoon sludge contains nutrients and organic matter remaining after treatment and application of the effluent. At clean out, this
material must be utilized for crop production and applied at agronomic rates. In most cases, the priority nutrient is nitrogen but
other nutrients including phosphorous, copper and zinc can also be limiting. Since nutrient levels are generally very high,
application of sludge must be carefully applied.
Sites must first be evaluated for their suitability for sludge application. Ideally, effluent spray fields should not be used for
sludge application. If this is not possible, care should be taken not to load effluent application fields with high amounts of
copper and zinc so that additional effluent cannot be applied On sites vulnerable to surface water moving to streams and lakes,
phosphorous is a concern. Soils containing very high phosphorous levels may also be a concern.
Lagoon Sludge Nitrogen Utilization Table
Crop
Maximum
PA-N Rate
Ib/ac
Maximum Sludge
Application Rate
1000 gal/ac
Minimum Acres
5 Years Accumulation
Minimum Acres
10 Years Accumulation
Minimum Acres
15 Years Accumulation
Swine Feeder -Finish Lagoon Sludge - Standard
Com 120 bu
150
13.16
30.69
61.38
92.07
Hay 6 ton R.Y.E.
300
26.32
15.34
30.69
46.03
Soybean 40 bu
160
14.04
28.77
57.54
8631
950736 Database Version 3.1 Date Printed: 07-15-2005 Sludge Page 1 of 1

The Available Waste Storage Capacity table provides an estimate of the number of days of storage capacity available
at the end of each month of the plan. Available storage capacity is calculated as the design storage capacity in days
minus the number of days of net storage volume accumulated The start date is a value entered by the user and is
defined as the date prior to apply ing nutrients to the first crop in the plan at which storage volume in the lagoon or
holding pond is equal to zero.
Available storage capacity should be greater than or equal to zero and less than or equal to the design storage
capacity of the facility. If the available storage capacity is greater than the design storage capacity, this indicates that
the plan calls for the application of nutrients that have not yet accumulated. If available storage capacity is negative,
the estimated volume of accumulated waste exceeds the design storage volume of the structure. Either of these
situations indicates that the planned application interval in the waste utilization plan is inconsistent with the
structure's temporary storage capacity.
Source Name
Swine Feeder -Finish Lagoon Liquid
Design Storage Capacity (Days)
Start Date
9/1
180
Plan Year
Month
Available Storage Capacity (Days)'
1
1
90
1
2
70
1
3
179
1
4
180
1
5
180
1
6
180
1
7
180
1
8
180
1
9
172
1
10
164
1
11
153
1
12
134
+ Available Storage Capacity is calculated as of the end of each month.
950736 Database Version 3.1 Date Printed: 07-15-2005 Capacity Page 1 of 1

Feet
0 65 130 260 390 520
Date Prepared: 7/18/2019
Prepared By: D. Wallace
2018 Aerials - Onslow County. NC
Spray Fields
Dwayne Silence
Farm 67-39
Producad by Oliglovi SWCO
ONSLOW
SOIL & WATER
CONSERVATION DISTRICT
*OlOTd Ass .ege

EME
3GENCCY AC
, PRONE NUMBERS
DWQ Q iai0�t� z
EMERGENCY M$TAGENIENT SYSTEM
SWCD
NRCS
C�len o'J-` 1.04 St
Nita 3g4-t - Linn
Mill) 937- /30Co
�9r69.2-31?-
LC)/o) 7 lr 2.10 i
This plan will be implemented in the event that wastes from your operation are leaking,
overflowing, or running off site. You should not wait until wastes reach surface waters or leave
your property to consider that you have a problem. You should make every effort to ensure that
this does not happen. This plan should be posted in an accessible location for all employees at the
facility. The following are some action items you should take.
1. Stop the release of wastes. Depending on the situation, this may or may not be possible.
Suggested responses to some possible problems are listed below.
A. Lagoon overflow -possible solutions are:
a. Add soil to berm to increase elevation of dam.
b. Pump wastes to fields at an acceptable rate.
c. Stop all flows to the lagoon immediately.
d. Call a pumping contractor.
e. Make sure no surface water is entering lagoon.
B: Runoff from waste application field -actions include:
a. Immediately stop waste application.
b. Create a temporary diversion to contain waste.
c. Incorporate waste to reduce runoff.
d. Evaluate and eliminate the reason(s) that caused the runoff.
e. Evaluate the application rates for the fields where runoff occurred.
C: Leakage from the waste pipes and sprinklers -action include:
a.
b.
c:
d.
Stop recycle pump.
Stop irrigation pump.
Close valves to eliminate further discharge.
Repair all leaks prior to restarting pumps.
1 December 18, 1996

D: Leakage from flush systems, houses, solid separators -action include:
a. Stop recycle pump.
b. Stop irrigation pump.
c. Malce sure no siphon occurs.
d. Stop all flows in the house, flush systems, or solid separators.
e. Repair all leaks prior to restarting pumps.
E: Leakage from base or sidewall of lagoon. Often this is seepage as opposed to flowing
leaks- possible action:
a. Dig a small sump or ditch away from the embankment to catch all seepage, put in a
. submersible pump, and pump back to lagoon.
h. If holes are caused by burrowing animals, trap or remove animals and fill holes and
compact with a clay type soil.
c. Have a professional evaluate the condition of the side walls and lagoon bottom as soon
as possible.
2. Assess the extent of the spill and note any obvious damages.
a. Did the waste reach any surface waters?
b. Approximately how much was released and for what duration?
c. Any, damage noted, such as employee injury, fish kills, or property damage?
d. Did the spill leave the property?'
e. Does the spill have the potential to reach surface waters?
f Could a fature rain event cause the spill to reach surface waters?
g. Are potable water wells in danger (either on or off of the property)?
h. How much reached surface waters?
3: Contact appropriate agencies.
[C1- b'
a. During normal business hours, call your DWQ (Division of Water Quality) regional office;
Phone Hi! - After hours, emergency number: 919-733-3942. Your phone call
should include: your name, facility, telephone number, the details of the incident from item
2 above, the exact location of the facility, the location or direction of movement of the
spill, weather and wind conditions. The corrective measures that have been under taken,
and the seriousness of the situation.
b. If spill leaves property or enters surface waters, call local EMS Phone number Crion t.
c. Instruct EMS to contact local Health Department.
d. Contact CES, phone numberQ ',r7nelocafSWCD office phone numbertiesaitt9and
local NRCS office for advice/technical assistance phone number - - .
December 18, 1996

4: If none of the above works call 911 or the Sheriffs Department and explain your problem to
them and ask that person to contact the proper agencies for you.
5: Contact the contractor of yotu• choice to begin repair of problem to minimize off site damage.
a. Contractors Name:
b. Contractors Address:
c. Contractors Phone:
6: Contact the technical specialist who certified the lagoon (NRCS, Consulting Engineer, etc.)
a. Name:
b. Phone:
7: Implement procedures as advised by DWQ and technical assistance agencies to rectify the
damage, repair the system, and reassess the waste management plan to keep problems with
release of wastes from happening again,
3 December 18, 1996

TABLE 3 - Solid Set Irrigation Gun Settings
DEWAYNE SILANCE
Make, Model and Type of Equipment: 7025 Rd 9/32 Noz. 60 PSI 18 gpm 138' dia.
Field No'
and
Line No2
Number of
Hydrants
Wetted
Diameter
(feet)
Hydrant Spacing (ft)
Along Between
Pipeline Pipelines
Application
Rate
(infhr)
OPERATING PARAMETERS
Nozzle Operating Operating
Diameter Pressure Time
(Inches) @ Gun (psi) @ Hydrant (hr)
Comments
Z-1
11
1138
80 •
80
.27
9/32
60
1.3
2.123
Z-2
Z-3
31
.,
1TIt..
3.670
29
„
5.387
Z 4
67
13.013
1
24.483
I
r
1
1
1
1
'See attached map provided by the Field Office for field location(s).
2Show separate entries for each pipeline with hydrants in each field.
Ir Parameters
0 1995
page)
USDA-NRCS
North Carol'''.

SC4k t.* a6O •
9o?,SR���32n►� N 6aP5r_ /8 S0i12. g:
_. O:22as i3.5P kiokleas-.. L'f3PAA.
-- ,+ : - L,Ar-lle-QA S PRL•takfeQs 5'PAx a 0
_ - /3V P race ni¢ti\S 20- Ict ACRES` _. _ • ,
APa PPTO 1•1•1*ies*pi
8.9r4a.4 /f %
38U0L67.
6./ tow. '
4,1`7 jc 30 S1
4r d ,mil / rj• . l;:b Y5 !''n !i
.L 1 ?P s rriw,�r�s zUa;adlc S,773 C�i
:Ne�'4s� S63o Lis
,/ .... Ser Si.,, ,✓,-✓s d- -... / `-3 L 6s
}� C.j /Fri] Ane6' ••% CU/Ic'"
s.04 PIca 4 GJ s ///`7 �1� i _ !/
1,973.

r'
_..Uecul��l.-StRr�CE SCG�. 1. a.(�4'..
O:PaaPc 8_SPQz�n)i,klets. •, i pAA..: r -
_ :. _ L.prIeriztsi s 5 PRr Alkfeas 5'Rex $ a ..
l3S P rAcz rn ¢N15 26- Zt. AC.
:_.. 3_ -- _ .
h f,
- G r
h'
• 3e
f
6e1a(n•orii //a
55tr - Y.
(./ toM -
6,4=7 j< 30 SL(, = : -1,973
1;744.- 13 E` s�� w Ke.-s 204246.1c. 5 77 3 -L
' �ur�e�f SCS Sf,�a/a ✓s a- -.� `2`3 L 6s.
Snryci �i c2 JLio vs fA 7//7-/ ? :11.... _ i1

Mortality Management Methods
Indicate which method(s) will be implemented.
When selecting multiple methods indicate a primary versus secondary option.
Methods other than those listed must be approved by the State Veterinarian.
Primary Secondary Routine Mortality
Burial three feet beneath the surface of the ground within 24 hours of knowledge of animal
death. The burial must be at least 300 feet from any flowing stream or public body of water
(G.S.106-403). The bottom of the burial pit should be at least one foot above the seasonal
high water table. Attach burial location map and plan.
❑ ❑
Version —November 26, 2018
❑ ❑ Landfill at municipal solid waste facility permitted by NC DEQ under GS 15A NCAC
—�� 13B .0200.
—n Rendering at a rendering plant licensed under G.S. 106-168.7.
❑ ❑ Complete incineration according to 02 NCAC 52C .0102.
fl El A composting system approved and permitted by the NC Department of Agriculture & Con-
sumer Services Veterinary Division (attach copy of permit). If compost is distributed off -farm,
additional requirements must be met and a permit is required from NC DEQ.
❑ In the case of dead poultry only, placing in a disposal pit of a size and design approved by the
NC Department of Agriculture & Consumer Services (G.S. 106-549.70).
❑('� Any method which, in the professional opinionof the State Veterinarian, would make possible
I ' the salvage of part of a dead animal's value without endangering human or animal health.
(Written approval by the State Veterinarian must be attached).
Mass Mortality Plan
Mass mortality plans are required for farms covered by an NPDES permit. These plans are
also recommended for all animal operations. This plan outlines farm -specific mortality man-
agement methods to be used for mass mortality. The NCDA&CS Veterinary Division sup-
ports a variety of emergency mortality disposal options; contact the Division for guidance.
• A catastrophic mortality disposal plan is part of the facility's CAWMP and is activated
when numbers of dead animals exceed normal mortality rates as specified by the State
Veterinarian.
• Burial must be:done in accordance with NC General Statutes and NCDA&CS Veterinary
Division regulations and guidance.
• Mass burial sites are subject to additional permit conditions (refer to facility's animal
waste management system permit).
• In the event of imminent threat of a disease emergency, the State Veterinarian may enact
dditional tgrpgq?ary procedures or measures for disposal according to G.S. 106-399.4.
Signature of Farm Owner/Manager
Signature of Technical Specialist
Date
e

Source Cause
Flush gutters
Insect Control Checklist for Animal Operations
St//vnc_ — &7— -39
BMPs to Control Insects Site Specific Practices
Liquid Systems
• Accumulation of solids Flush system is designed and operated sufficiently
to remove accumulated solids from gutters as
designed
O Remove bridging of accumulated solids at
,discharge
Lagoons and pits • Crusted solids
Maintain lagoons, settling basins and pits where
pest breeding is apparent to minimize the crusting
of solids to a depth of no more than 6 to 8 inches
over more than 30 percent of surface
Excessive vegetative • Decaying vegetation CJ' Maintain vegetative control along banks of
growth lagoons and other impoundments to prevent
accumulation of decaying vegetative matter along
water's edge on impoundment's perimeter.
Dry Systems
Feeders • Feed spillage O Design, operate, and maintain feed systems
(e.g., bunkers and troughs) to minimize the
accumulation of decaying wastage
O Clean up spillage on a routine basis (e.g., 7- to 10-
day interval during summer; 15- to 30-day interval
during winter)
AMIC - November 11, 1996, page 1

Insect Control Checklist for Animal Operations
Source Cause BMPs to Control Insects
Feed storage • Accumulations of feed O Reduce moisture accumulation within and around
residues immediate perimeter of feed storage areas by
ensuring drainage is away from site and/or providing
adequate containment (e.g., covered bin for
brewer's grain and siniilar high moisture grain
products)
O Inspect for and remove or break up accumulated
solids in filter strips around feed storage as needed
Animal holding areas • Accumulations of animal 0 Eliminate low areas that trap moisture along fences
wastes and feed wastage and other locations where waste accumulates and
disturbance by animals is minimal
O Maintain fence rows and filter strips around animal
holding areas to minimize accumulations of wastes
(i.e., inspect for and remove or break up
accumulated solids as needed)
Site Specific Practices
Dry manure handling • Accumulations of animal 0 Remove spillage on a routine basis (e.g.,
systems wastes 7- to 10-day interval during summer; 15- to 30-day
interval during winter) where manure is loaded for
land application or disposal
O Provide for adequate drainage around manure
stockpiles
O Inspect for and remove or break up accumulated
wastes in filter strips around stockpiles and manure
handlins areas as needed
For more information contact:
Cooperative Extension Service, Department of Entomology, Box 7613, North Carolina State University, Raleigh, NC 27695-7613.
A VEC - November 11, 1996, page 2

Swine Farm Waste Management Odor Control Checklist
Source
Farmstead
Cause
• Swine production
BMPs to Minimize Odor
0/ Vegetative or wooded buffers
Recommended best management practices
dGood judgment and common sense
Site Specific Practices
Animal body
surfaces
• Dirty manure -covered 0 Dry floors
animals
Floor surfaces
• Wet manure -covered floors Gt1 Slotted floors
01 Waterers located over slotted floors
dFeeders at high end of solid floors
2/Scrape manure buildup from floors
O Underfloor ventilation for drying
Manure collection • Urine 0' Frequent manure removal by flush, pit recharge,
pits • Partial microbial or scrape
decomposition 0 Underfloor ventilation
Ventilation exhaust • Volatile gases "Fan maintenance
/
fans • Dust 0 $fficient air movement
Indoor surfaces • Dust
Washdown between groups of animals
O Feed additives
O Feeder covers
O Feed delivery downspout extenders to feeder
covers
Flush tanks
• Agitation of recycled lagoon 0 Flush tank covers
liquid while tanks are filling - 0 Extend fill lines to near bottom of tanks with
anti -siphon vents
Flush alleys • Agitation during wastewater 0 Underfloor flush with underfloor ventilation
conveyance
AMOC - November 11, 1996, page 1

Swine Farm Waste Management Odor Control Checklist
Source
Pit recharge points
Cause
• Agitation of recycled lagoon
liquid while pits are filling
BMPs to Minimize Odor
❑ Extend recharge lines to near bottom of pits with
anti -siphon vents
Site Specific Practices
Lift stations
• Agitation during sump tank
filling and drawdown
❑ Sump tank covers
Outside drain •
collection or junction
boxes
Agitation during wastewater
conveyance
❑ Box covers
End of drainpipes
at lagoon
• Agitation during wastewater
conveyance
❑ Extend discharge point of pipes underneath
lagoon liquid level
Lagoon surfaces
• Volatile gas emissions
• Biological mixing
• Agitation
Q'-Proper lagoon liquid capacity
Correct lagoon startup procedures
❑ Minimum surface area -to -volume ratio
O Minimum agitation when pumping
O Mechanical aeration
❑ Proven biological additives
Irrigation sprinkler
nozzles
• High pressure agitation
• Wind drift
L� Irrigate on dry days with little or no wind
C"Minimum recommended operating pressure
12 Pump intake near lagoon liquid surface
O Pump from second -stage lagoon
Storage tank or
basin surface
• Partial microbial
decomposition
• Mixing while filling
• Agitation when emptying
O Bottom or midlevel loading
O Tank covers
O Basin surface mats of solids
❑ Proven biological additives or oxidants
AMOC - November 11, 1996, page 2

Swine Farm Waste Management Odor Control Checklist
Source
Settling basin surface
Cause
• Partial microbial
decomposition
• Mixing while filling
• Agitation when emptying
BMPs to Minimize Odor
O Extend drainpipe outlets underneath liquid level
O Remove settled solids regularly
Site Specific Practices
Manure, slurry, or
sludge spreader
outlets
• Agitation when spreading
• Volatile gas emissions
O Soil injection of slurry/sludges
O Wash residual manure from spreader after use
O Proven biological additives or oxidants
Uncovered manure,
slurry, or sludge on
field surfaces
• Volatile gas emissions while
drying
O Soil injection of slurry/sludges
O Soil incorporation within 48 hours
O Spread in thin uniform layers for rapid drying
O Proven biological additives or oxidants
Dead animals • Carcass decomposition
O Proper disposition of carcasses
Dead animal disposal • Carcass decomposition
pits
O Complete covering of carcasses in burial pits
O Proper location/construction of disposal pits
Incinerators
• Incomplete combustion
O Secondary stack burners
Standing water •
around facilities •
Improper drainage
Microbial decomposition of
organic matter
d Grade and landscape such that water drains away
from facilities
Manure tracked onto • Poorly maintained access
public roads from roads
farm access
d Farm access road maintenance
AMOC - November 11, 1996, page 3

Additional Information:
Available From:
Swine Manure Management; .0200 Rule/BMP Packet
Swine Production Farm Potential Odor Sources and Remedies; EBAE Fact Sheet
Swine Production Facility Manure Management: Pit Recharge —Lagoon Treatment; EBAE 128-88
Swine Production Facility Manure Management: Underfloor Flush —Lagoon Treatment; EBAE 129-88
Lagoon Design and Management for Livestock Manure Treatment and Storage; EBAE 103-83
Calibration of Manure and Wastewater Application Equipment; EBAE Fact Sheet
Controlling Odors from Swine Buildings; PIH-33
Environmental Assurance Program; NPPC Manual
Options for Managing Odor; a report from the Swine Odor Task Force
Nuisance Concerns in Animal Manure Management: Odors and Flies; PRO107, 1995 Conference Proceedings
NCSU, County Extension Center
NCSU—BAE
NCSU—BAE
NCSU—BAE
NCSU—BAE
NCSU—BAE
NCSU—Swine Extension
N.C. Pork Producers Assoc.
NCSU Agricultural Communications
Florida Cooperative Extension
AMOC - November 11, 1996, page 4

OPERATION & MAINTENANCE PLAN
Proper lagoon management should be a year-round priority. It is especially important to manage
levels so that you do not have problems during extended rainy and wet periods.
Maximum storage capacity should be available in the lagoon for periods when the receiving crop is
dormant (such as wintertime for bermudagrass) or when there are extended rainy spells such as a
thunderstorm season in the summertime. This means that at the first sign of plant growth in the
later winter / early spring, irrigation according to a farm waste management plan should be done
whenever the land in dry enough to receive lagoon liquid. This will make storage space available in
the lagoon for future wet periods. In the late summer / early fall the lagoon should be pumped down
to the low marker (see Figure 2-1) to allow for winter storage. Every effort should be made to
maintain the lagoon close to the minimum liquid level as long as the weather and waste utilization
plan will allow it.
Waiting until the lagoon has reached its maximum storage capacity before starting to irrigated does
not leave room for storing excess water during extended wet periods. Overflow from the lagoon for
any reason except a 25-year, 24-hour storm is a violation of state law and subject to penalty action.
The routine maintenance of a lagoon involves the following:
• Maintenance of a vegetative cover for the dam. Fescue or common bermudagrass
are the most common vegetative covers. The vegetation should be fertilized each
year, if needed, to maintain a vigorous stand. The amount of fertilized applied
should be based on a soils test, but in the event that it is not practical to obtain a
soils test each year, the lagoon embankment and surrounding areas should be
fertilized with 800 pounds per acre of 10-10-10, or equivalent.
Brush and trees on the embankment must be controlled. This may be done by
mowing, spraying, grazing, chopping, or a combination of these practices. This
should be done at least once a year and possibly twice in years that weather
conditions are favorable for heavy vegetative growth.
NOTE: If vegetation is controlled by spraying, the herbicide must not be allowed to enter the lagoon
water. Such chemicals could harm the bacteria in the lagoon that are treating the waste.
Maintenance inspections of the entire lagoon should be made during the initial filling of the lagoon
and at least monthly and after major rainfall and storm events. Items to be checked should include,
as a minimum, the following:
Waste Inlet Pipes, Recycling Pipes, and Overflow Pipes -- look for:
1. separation of joints
2. cracks or breaks
3. accumulation of salts or minerals
4. overall condition of pipes
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Lagoon surface -- look for:
1. undesirable vegetative growth
2. floating or lodged debris
Embankment -- look for:
1. settlement, cracking, or "jug" holes
2. side slope stability -- slumps or bulges
3. wet or damp areas on the back slope
4. erosion due to lack or vegetation or as a result of wave action
5. rodent damage
Larger lagoons may be subject to liner damage due to wave action caused by strong
winds. These waves can erode the lagoon sidewalls, thereby weakening the lagoon dam.
A good stand of vegetation will reduce the potential damage caused by wave action. If
wave action causes serious damage to a lagoon sidewall, baffles in the lagoon may be
used to reduce the wave impacts.
Any of these features could lead to erosion and weakening of the dam. If your lagoon
has any of these features, you should call an appropriate expert familiar with design and
construction of waste lagoons. You may need to provide a temporary fix if there is a
threat of a waste discharge. However, a permanent solution should be reviewed by the
technical expert. Any digging into a lagoon dam with heavy equipment is a serious
undertaking with potentially serious consequences and should not be conducted unless
recommended by an appropriate technical expert.
Transfer Pumps -- check for proper operation of:
1. recycling pumps
2. irrigation pumps
Check for leaks, Loose fittings, and overall pump operation. An unusually loud or grinding
noise, or a large amount of vibration, may indicate that the pump is in need of repair or
replacement.
NOTE: Pumping systems should be inspected and operated frequently enough so that
you are not completely "surprised" by equipment failure. You should perform your
pumping system maintenance at a time when your lagoon is at its low level. This will
allow some safety time should major repairs be required. Having a nearly full lagoon is
not the time to think about switching, repairing, or borrowing pumps. Probably, if your
lagoon is full, your neighbor's lagoon is full also. You should consider maintaining an
inventory of spare parts or pumps.
• Surface water diversion features are designed to carry all surface drainage
waters (such as rainfall runoff, roof drainage, gutter outlets, and parking lot
runoff) away from your lagoon and other waste treatment or storage
structures. The only water that should be coming from your lagoon is that
which comes from your flushing (washing) system pipes and the rainfall that
hits the lagoon directly. You should inspect your diversion system for the
following:
1. adequate vegetation
2. diversion capacity
3. ridge berm height
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Identified problems should be corrected promptly. It is advisable to inspect your system
during or immediately following a heavy rain. If technical assistance is needed to
determine proper solutions, consult with appropriate experts.
You should record the level of the lagoon just prior to when rain is predicted, and then
record the level again 4 to 6 hours after the rain (assumes there is no pumping). This will
give you an idea of how much your lagoon level will rise with a certain rainfall amount
(you must also be recording your rainfall for this to work). Knowing this should help in
planning irrigation applications and storage. If your lagoon rises excessively, you may
have an overflow problem from a surface water diversion or there may be seepage into
the lagoon from the surrounding land.
Lagoon Operation
Startup:
1. Immediately after construction establish a complete sod cover on bare soil
surfaces to avoid erosion.
2. Fill new lagoon design treatment volume at least half full of water before waste
loading begins, taking care not to erode lining or bank slopes.
3. Drainpipes into the lagoon should have a flexible pipe extender on the end of the
pipe to discharge near the bottom of the lagoon during initial filling or another
means of slowing the incoming water to avoid erosion of the lining.
4. When possible, begin loading new lagoons in the spring to maximize bacterial
establishment (due to warmer weather).
5. It is recommended that a new lagoon be seeded with sludge from a healthy
working swine lagoon in the amount of 0.25 percent of the full lagoon liquid
volume. This seeding should occur at least two weeks prior to the addition of
wastewater.
6. Maintain a periodic check on the lagoon liquid pH. If the pH falls below 7.0, add
agricultural lime at the rate of 1 pound per 1000 cubic feet of lagoon liquid volume
until the pH rises above 7.0. Optimum lagoon liquid pH is between 7.5 and 8.0.
7. A dark color, lack of bubbling, and excessive odor signals inadequate biological
activity. Consultation with a technical specialist is recommended if these
conditions occur for prolonged periods, especially during the warm season.
Loading:
The more frequently and regularly that wastewater is added to a lagoon, the better the
lagoon will function. Flush systems that wash waste into the lagoon several times daily
are optimum for treatment. Pit recharge systems, in which one or more buildings are
drained and recharged each day, also work well.
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• Practice water conservation --- minimize building water usage and spillage from
leaking waterers, broken pipes and washdown through proper maintenance and water
conservation.
• Minimize feed wastage and spillage by keeping feeders adjusted. This will reduce the
amount of solids entering the lagoon.
Management:
• Maintain lagoon liquid level between the permanent storage level and the full
temporary storage level.
• Place visible markers or stakes on the lagoon bank to show the minimum liquid level
and the maximum liquid level. (Figure 2-1).
• Start irrigating at the earliest possible date in the spring based on nutrient
requirements and soil moisture so that temporary storage will be maximized for the
summer thunderstorm season. Similarly, irrigate in the late summer / early fall to
provide maximum lagoon storage for the winter.
• The lagoon liquid level should never be closer than 1 foot to the lowest point of the
dam or embankment.
• Don not pump the lagoon liquid level lower than the permanent storage level unless
you are removing sludge.
• Locate float pump intakes approximately 18 inches underneath the liquid surface and
as far away from the drainpipe inlets as possible.
• Prevent additions of bedding materials, long-stemmed forage or vegetation, molded
feed, plastic syringes, or other foreign materials into the lagoon.
• Frequently remove solids from catch basins at end of confinement houses or
wherever they are installed.
• Maintain strict vegetation, rodent, and varmint control near lagoon edges.
• Do not allow trees or large bushes to grow on lagoon dam or embankment.
• Remove sludge from the lagoon either when the sludge storage capacity is full or
before it fills 50 percent of the permanent storage volume.
• If animal production is to be terminated, the owner is responsible for obtaining and
implementing a closure plan to eliminate the possibility of a pollutant discharge.
Sludge Removal:
Rate of lagoon sludge buildup can be reduced by:
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• proper lagoon sizing,
• mechanical solids separation of flushed waste,
• gravity settling of flushed waste solids in an appropriately designed basin, or
• minimizing feed wastage and spillage.
Lagoon sludge that is removed annually rather than stored long term will:
• have more nutrients,
• have more odor, and
• require more land to properly use the nutrients.
Removal techniques:
• Hire a custom applicator.
• Mix the sludge and lagoon liquid with a chopper - agitator impeller pump through large -
bore sprinkler irrigation system onto nearby cropland; and soil incorporate.
• Dewater the upper part of lagoon by irrigation onto nearby cropland or forageland; mix
remaining sludge; pump into liquid sludge applicator; haul and spread onto cropland or
forageland; and soil incorporate,
• Dewater the upper part of lagoon by irrigation onto nearby cropland or forageland;
dredge sludge from lagoon with dragline or sludge barge; berm an area beside lagoon
to receive the sludge so that liquids can drain back into lagoon; allow sludge to
dewater; haul and spread with manure spreader onto cropland or forageland; and soil
incorporate.
Regardless of the method, you must have the sludge material analyzed for waste
constituents just as you would your lagoon water. The sludge will contain different
nutrient and metal values from the liquid. The application of the sludge to fields will be
limited by these nutrients as well as any previous waste applications to that field and crop
requirement. Waste application rates will be discussed in detail in Chapter 3.
When removing sludge, you must also pay attention to the liner to prevent damage.
Close attention by the pumper or drag -line operator will ensure that the lagoon liner
remains intact. If you see soil material or the synthetic liner material being disturbed, you
should stop the activity immediately and not resume until you are sure that the sludge can
be removed without liner injury. If the liner is damaged it must be repaired as soon as
possible.
Sludge removed from the lagoon has a much higher phosphorus and heavy metal content
than liquid. Because of this it should probably be applied to land with low phosphorus and
metal levels, as indicated by a soil test, and incorporated to reduce the chance of erosion.
Note that if the sludge is applied to fields with very high soil -test phosphors, it should be
applied only at rates equal to the crop removal of phosphorus. As with other wastes,
always have your lagoon sludge analyzed for its nutrient value.
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The application of sludge will increase the amount of odor at the waste application site.
Extra precaution should be used to observe the wind direction and other conditions which
could increase the concern of neighbors.
Possible Causes of Lagoon Failure
Lagoon failures result in the unplanned discharge of wastewater from the structure.
Types of failures include leakage through the bottom or sides, overtopping, and breach of
the dam. Assuming proper design and construction, the owner has the responsibility for
ensuring structure safety. Items which may lead to lagoon failures include:
• Modification of the lagoon structure -- an example is the placement of a pipe in the dam
without proper design and construction. (Consult an expert in lagoon design before
placing any pipes in dams.)
• Lagoon liquid levels — high levels are a safety risk.
• Failure to inspect and maintain the dam.
• Excess surface water flowing into the lagoon.
• Liner integrity -- protect from inlet pipe scouring, damage during sludge removal, or
rupture from lowering lagoon liquid level below groundwater table.
NOTE: If lagoon water is allowed to overtop the dam, the moving water will soon cause
gullies to form in the dam. Once this damage starts, it can quickly cause a large
discharge of wastewater and possible dam failure.
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