820718_Sludge Survey (Reporting)_20230609

MOBVED
PLAN OF ACTION (POA) FOR LAGOON SLUDGE REDUCTION JUN 0 9 2023
Ne DmDWR
Central Oth'ce
Facility Number: 82-718 County: Sampson
Facility Name:__ _B&B Thornton#3
Certified Operator Name: Robert Thornton Operator#: 16750
"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.
Lagoon 1 Lagoon 2 Lagoon 3 Lagoon 4 Lagoon 5 Lagoon 6
a. Lagoon Name/ 1
Identifier
b.Total Sludge Depth 4.1
(ft)
c. Sludge Depth to be .8'
Removed for
Compliance (ft)
d. Sludge Volume to 300,000
be Removed (gallons)
e. Sludge PAN N/E
(Ibs/1000 gal)
f. Liquid PAN N/E
(Ibs/100 gal)
g. PAN of sludge (Ibs) N/E
(dxe)/1
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 MRCS 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.
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SPOA 9-15-2016

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/Operation Plan
Sludge Management Guidance
Lagoon evaluation data developed by NCSU and a review of lagoon management records of several Lagoons
showed that the treatment capability 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 providing that:
• Nutrient values of the lagoon effluent are within the normal operating range.
• There is no noticeable 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 the temporary
storage
Sludge Management
Sludge in my lagoon will be managed by the following:
• Adequately monitor to define sludge volume,location,size,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: 11/9/22 Compliance Due Date: 11/9/24
John Robert Thornton Phone: [phone]
Facility Owner/Manager(print)
JOLM, Date: 2/17/23
acility Owner/Manager(signature)
Return this form to:
Animal Feeding Operations Unit
NC Division of Water Quality
1636 Mail Service Center
Raleigh, NC 27699-1636
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SPOA 9-15-2016