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HomeMy WebLinkAbout260007_POA for sludge reduction_20211020Appendix 1. Lagoon Sludge Survey Form A. Farm Permit or DWQ Identification Number B. Lagoon Identification C. Person(s) Taking Measurements D. Date of Measurement E. Methods/Devices Used for Measurement of: Revised August 2008 Ray Bullard Farm Ray Bullard Farm Blake Moore 10/20/21 a. Distance from the lagoon liquid surface to the top of the sludge layer. pole with disc E Q/J t/VR OCT 252021 rQRQS FAYETTE /H t: pp--`4; NALOFFICE L441 S&ik:k.7,/,),,, � Q �oV G/ ON„ CFI/C b. Distance from the lagoon liquid surface to the bottom (soil) of the lagoon. pole c. Thickness of the sludge layer if making a direct measurement with "core sampler". F. Lagoon Surface Area (using dimensions at inside top of bank): (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 = 12 , 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. Plumber the intersection points on the lanoon 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 2.5 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): J. Determine the distance from the top of bank to the Maximum Liquid Level (use lagoon management plan or other lagoon records) K. Determine the distance from the Maximum Liquid to the Minimum Liquid level: (use lagoon management plan or other lagoon records) L. Calculate the distance from the present liquid surface level to the Minimum Liquid Level (Item K Minus Item I, 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) 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): O. Record from the Sludge Survey Data Sheet the average thickness of the sludge layer: P. Calculate the thickness of the existing Liquid Treatment Zone (Item N minus Item L): Q. If Item 0 is greater than Item P, proceed to the Worksheet for Sludge Volume and Treatment Volume. If Item 0 is equal to or less than Item P, you do not have to determine volumes. Completed by: Blake Moore/Greer Moore Print Name /Signature Appendix 2. Sludge Survey Data Sheet* Revised August 2008 1.0 1.6 2.0 1.0 6.6 2.0 4.6 1.0 Date: 10/20/21 1 Lagoon Identification RBF Completed by: Blake Moore Print Name Signature Date: 10/20/21 (A) Grid Point No. (B) ( C ) Distance from liquid surface to lagoon bottom (soil) (C)-(B) Thickness of sludge layer Distance from liquid surface to top of sludge Ft. & in. Ft. (tenths) Ft. & in. Ft. (tenths) Ft. & in. Ft. (tenths) 1 1.5 1.5 6 6.0 4.5 2 1.5 1.5 6 6.0 4.5 3 0.5 0.5 6.5 6.5 6.0 4 1.75 1.8 7.25 7.3 5.5 5 2 2.0 7 7.0 5.0 6 2.25 2.3 7 7.0 4.8 7 2 2.0 6.5 6.5 4.5 8 2 2.0 6.5 6.5 4.5 9 2.5 2.5 6 6.0 3.5 10 3 3.0 6 6.0 3.0 11 3 3.0 7 7.0 4.0 12 2.25 2.3 7 7.0 4.8 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 points with readings X X X X Average of points 2.03 6.56 X X 4.55 At pump intake 2.0 N/A X X X X X X *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 0 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 2 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. 1. Average sludge Layer Thickness (T) 2. Depth of the lagoon from top of bank to bottom soil surface (D) 3. Slope = Horizontal/ vertical side slope (S) 4. Length at the top of inside bank (L) 5. Width at top inside slope (W) 6. Length at midpoint of sludge layer Lm = L-2S(D-(T/2)) 7. Width at midpoint of sludge layer Wm= W-2S(D-(T/2)) 8. Volume of sludge (Vs) Vs=Lm Wrn T 9. Volume in gallons: Vsg=V*7.5 gal./ft3. 10. Thickness of existing liquid tmt. zone (Y) 11. Thickness of total treatment zone (Z) Z= T+Y 12. Length at midpoint of total tmt. zone LZ = L-2(S)(D-(Z/2) 13. Width at midpoint of total tmt. Zone WZ = W-2(S)(D-(Z/2) 14. Volume of total treatment zone (Vz) Vz = LZ WZ Z 15. Ratio ( R ) of sludge layer volume to total Treatment Volume R = VsNz Example Your Lagoon 2.5 ft. 4.6 ft. 11 ft. 9.5 ft. 3 3.0 457 ft. 440.0 ft. 229 ft. 220.0 ft. 398.5 ft. 396.7 ft. 170.5 ft. 176.7 ft. 169,860 ft3 318,810 ft3 1,273,950 gal. 2,391,078 gal. 3.5 ft 1.0 ft 6 ft 5.6 ft 409 ft. 399.7 ft. 181 ft. 179.7 ft. 444,174 ft3 398,474 ft3 0.38 0.80 If the ratio R exceeds 0.50, than a sludge Plan of Action may be required. Check with DWQ for information on filing the Plan of Action. Note: If the lagoon has a designed sludge storage volume (DSSV), subtract that volume from both the volume of sludge (Vs) (Item 8) and from the volume of total treatment zone (Vz) (Item 14), and take the ratio. Then, R = (Vs-DSSV) / (Vz - DSSV) Example: If DSSV = 85,000 ft3, then R = (169,860 - 85,000) / (447,174 - 85,000) = 84,860 / 362,174 = 0.24. 16. Design sludge storage volume (DSSV) 85,000 17. Ratio (R) of sludge layer volume to treatment volume adjusted for designed sludge storage volume 0.24 0.80 3 4/1 will be C Jos L)v �M-+ (eautski PLAN OF ACTION (POA) FOR LAGOON SLUDGE REDUCTION 6S Facility Number: 4.26,z.)9 County: /� Facility Name: 73//a GI r Certified Operator Name: /'frk\esP �- Operator #: f4 ZaU%•1 **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. Lagoo 1 1 �, � I W y Lagoon 2 Lagoon 3 Lagoon 4 Lagoon 5 Lagoon 6 a. Lagoon Name/ Identifier b. Total Sludge Depth (ft) r "� 2/. 5 3 c. Sludge Depth to be Removed for Compliance (ft) alL410�''- c (oS u� , 4/.55- d. Sludge Volume to be . Removed (gallons) AG, (4 h'-14 ,. :,- 2_1 301 M G„.'1 g e. Sludge PAN (lbs/1000 gal) t6.0 f. Liquid PAN (Ibs/100.0 gat) , /. ''fr �, i g. PAN of Sludge (Ibs) (d x e)/1000 e.vl 5) 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 eiff ► co-. ,•- s 5o , 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. y v tom- cle.s4 s6-4- LA I0 fr- fey 3d6 ntv I ei p(( cam �-- c.1 r e-t0 1141 irJG•ti e AftCro 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. 1 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: / -.2_ 0~ a ( 4 5 ,ed 'F Facility i ac ty Owner/Manager (print) 4ility wne 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 Compliance Due Date: /0 - 4.2b) - 23 Phone: 9 / — 303 3 "715— Date: /1 — (9f State Permitted Facilities Return this form to: NC Division of Water Resources at the appropriate Regional Office (see following page) SPOA 9-15-2016 Page 2 of 3 DIVISION OF WATER RESOURCES REGIONAL OFFICES (09/2016) Counties served by each Regional Office Asheville Regional Supervisor 2090 U.S. Highway 70 Swannanoa, NC 28778 (828) 296-4500 Fax (828) 299-7043 Avery Macon Buncombe Madison Burke McDowell Caldwell Mitchell Cherokee Polk Clay Rutherford Graham Swain Haywood Transylvania Henderson Yancey Jackson <Fayetteville Regional Supervisor 225 Green Street, Suite 714 Fayetteville, NC 28301-5094 (910) 433-3300 Fax (910) 486-0707 Anson Moore Bladen Richmond um er and Robeson Harnett Sampson Hoke Scotland Montgomery Winston-Salem Regional Supervisor 450 Hanes Mill Road, Suite 300 Winston-Salem, NC 27105 (336) 776-9800 Fax (336) 776-9797 Alamance Rockingham Alleghany Randolph Ashe Stokes Caswell Surry Davidson Watauga Davie Wilkes Forsyth Yadkin Guilford Washington Regional Supervisor 943 Washington Square Mall Washington, NC 27889 (252) 946-6481 Fax (252) 975-3716 Beaufort Jones Bertie Lenoir Camden Martin Chowan Pamlico Craven Pasquotank Currituck Perquimans Dare Pitt Gates Tyrell Greene Washington Hertford Wayne Hyde Mooresville Regional Supervisor 610 East Center Avenue, Suite 301 Mooresville, NC 28115 (704) 663-1699 Fax (704) 663-6040 Alexander Cabarrus Catawba Cleveland Gaston Iredell Lincoln Mecklenburg Rowan Stanly Union Raleigh Regional Supervisor 1628 Mail Service Center Raleigh, NC 27699-1628 (919) 791-4200 Fax (919) 571-4718 Chatham Nash Durham Northampton Edgecombe Orange Franklin Person Granville Vance Halifax Wake Johnston Warren Lee Wilson Wilmington Region Supervisor 127 Cardinal Drive Extension Wilmington, NC 28405-3845 (910) 796-7215 Fax (910) 350-2004 Brunswick Carteret Columbus Duplin New Hanover Onslow Pender SPOA 9-15-2016 Page 3 of 3