820699_Sludge Survey (Testing Dates)_20200127

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January 27, 2020
James.B Best
TDM 30 (Best Bros.)
439 J B Wilson Rd
Newton Grove,NC 28366
Subject:.Sludge Survey.Testing Dates
Certificate of Coverage No: AWS820699
TDM 30 (Best Bros.),
Animal Waste Management System
Sampson County. .
Dear.James B Best:'
The Division of Water Resources (Division)received your sludge survey information on January
13, 2020. With the survey results, you requested an extension of the sludge survey requirement
for Lagoon#1 at the TDM 30 (Best Bros:) facility. Due to the amount of treatment volume
available, and the rate of sludge accumulation for the lagoon, the Division agrees that a sludge
survey is not needed until December 31,.2024,
The next sludge survey.for Lagoon#1 at TDM 30 (Best Bros.) should be performed before
December 31,2024. Please retain this letter and keep it with your farm records for reference.
Please call me at(919)707-3705 if you have any questions:
Sincerely,
X
Heath C. Robinson
Animal Feeding Operations Program
cc: ( Fayetteville Regional Office,Water Quality Regional Operations Section
Permit File AWS820699
D E Q- j North Carolina Department of Environmental Quality I Division of Water Resources
512 North Salisbury Street 11636 Mail Service Center 1 Raleigh,North Carolina 27699-1636
NORTH CAtgl MA.
0.1.thedm[ n.madriaar .919.707.9000

Sludge Survey Evaluation Form. Today's efiN/ .O .o
Facility# -820699
Owner: 3t3
Lagoon ID'. . Lagoon 1 .
Sludge Survey Received: 1/3/2020
Sludge Survey Performed: 1222/2019
Sludge Depth(Row 0):(ft)
Existing Treatment Depth(Row P)'.(ft)
Start Date: . .: _ 10/t14/1997
Date of previous Sludge Survey 12/26/2014
Previous Sludge Depth:(ft)
Previous Treatment Depth:(ft)
Time Since Previous Sludge Survey:(yrs) 5
Requested Extension:(yr)
Requested Due Date: 12/31/2024
Rate of Sludge Accumulation:(ft/yr) 0.10 •
Sludge Accumulation During Extenson Period:(ft) 0.50
Treatment Depth Available After Extension:(ft) 5.50
Sludge Level Okay?.. . YES,
Ratio Estimates Based on Depth EXISTING EXEMPTION
Ratio of Sludge Layer to Total Treatment Depth 0.29 0:35
Ratio of Sludge Depth Okay? YES
EXISTING EXEMPTION
Average Sludge Layer Thickness(T) 2.40 2.90
Depth of lagoon from top of bank to bottom soil surface(D) NA
Slope=Horizontal/Vertical Side Slope(S) NA
Length at the Top of the Inside Bank(L) IJ1 NA
Width at the Top Inside Slope(W) NA
Thickness of Existing Liquid Treatment Zone(Y) 6.00 : 5.50
Length at Midpoint of Sludge.Layer(Lm)=L-2S(D-(T/2)) #VALUE! #VALUE!
Width at Midpoint of Sludge Layer(Wm)=W-2S(D-(T/2)) _ #VALUE! . #VALUE!
Volume of Sludge(Vs)=L-m*Wm*T =-- --, =. - #VALUE! #VALUE!
Volume of Sludge in Gallons(Vsg)=Vs*7.481 #VALUE! .. #VALUE_
Thickness of Total Treatment Zone(Z)=T+Y 8.40 8:40
Length at Midpoint of Total Treatment Zone'(Lz)=L-2(S)(D-(Z/2)) #VALUE! #VALUE!.
Width at Midpoint of Total Treatment Zone(Wz)=W-2(S)(D-(Z/2)) #VALUE! #VALUE!
Volume of Total Treatment Zone(Vz)=Lz*Wz*Z #VALUE!. #VALUE!
Ratio(R)of Sludge Layer Volume to Total Treatment Volume #VALUE! . #VALUE!
Sludge Volume Ratio Okay? #VALUEI
Maximum Extension Until End of Permit.Cycle
Next Survey to.be Done:.(Calendar Year) 12/1/20i24
Notification Letter Mailed: a o