BIOSOLIDS MANAGEMENT. Lisa L. Williams, President Old Line Environmental, Inc.

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1 BIOSOLIDS MANAGEMENT Lisa L. Williams, President Old Line Environmental, Inc.

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4 WASTEWATER TREATMENT SLUDGE GENERATION

5 Aerobic digestion Anaerobic digestion Lime-stabilized

6 Composting Pelletization (thermal drying) Pasteurization (heat/lime) Thermophilic digestion

7 Utilization and recycling Protection of public health Protection of surface and groundwater Reliability

8 Added N, P and micronutrients Increases soil organic matter Cation exchange capacity Tilth Water-holding capacity Lime to adjust ph

9 Nutrient Value Per Acre* N $47.50 P S 3.00 Mg 5.00 Cu 4.00 Zn 8.00 Lime Spreading/Tillage $20.00 Cost Savings $ Based on a 2011 application of Blue Plains lime-stabilized biosolids applied at an agronomic rate for a 125 Bu corn crop. (2016 Fertilizer Prices)

10 Soil ph must be raised to at least 6.0, prior to or at the time of biosolids application. Soil ph must be maintained at 6.0 or above. Lime-stabilized and lime-amended biosolids may not be applied to fields with soil ph s at or above 7.5.

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19 % Solids % TKN % Ammonia % Org. N % Nitrate Blue Plains (lime-stabilized)* Alexandria (digested Class A)* Sod Run (anaerobic digest)* Piscataway (lime-stabilized)* Parkway (lime-stabilized)* Little Patuxent (lime-stabilized Class A)* Mattawoman (lime-stabilized)* La Plata (aerobic digest)** * Data from 2011 A&L analysis ** Data from 2007 A&L analysis

20 Lbs./Dry Ton = (% conc. as a decimal x 2,000 lbs.) TKN Ammonia Org. N NO 3 Blue Plains (LS) (limestabilized) 80.4 (0.0402*2000) Sod Run (D) (digest) (0.0603*2000) Blue Plains & Sod Run: 2011 A&L analyses

21 Lbs./Wet Ton = (lbs./dt x % solids as a decimal) TKN Ammonia Org. N NO 3 Blue Plains (LS) (limestabilized) 27.0 (80.4*0.3362) Sod Run (D) (digest) 18.3 (120.6*0.1519) Blue Plains & Sod Run: 2011 A&L analyses

22 N NH 4 1 st Season Mineralization P 2 O 5 K 2 O Dairy Manure Poultry Litter (broiler) Blue Plains (lime-stabilized) Sod Run (anaerobic digest) Manure: University of Maryland Soil Testing Laboratory average value Biosolids: (a) Blue Plains: 2011 A&L analyses, % solids = (b) Sod Run: 2011 A&L analyses, % solids = 15.19

23 NMP submitted with permit application package. NMP good for one biosolids application or one year, whichever comes first. NMP update required prior to biosolids application after first year. Biosolids permits valid for five years.

24 Yield goal for each crop that potentially could be grown on a field permitted for biosolids application. N requirements for each crop. Fertility recommendation for each crop.

25 N required = Crop Need (lbs./acre) Residual N -- Manure -- Biosolids -- Legumes Rate (dt/acre) = N required (lbs./acre) PAN (lbs./dt) Note: PAN = Plant Available Nitrogen

26 FARM: 0 PAGE 1 ACRES: 0.0 NUTRIENT MANAGEMENT RECOMMENDATIONS SUMMARY DATE: 5/1/2017 PREPARED BY: SOIL TEST RESULTS (INDEX VALUE) FERTILITY RECOMMENDATIONS CROP RESIDUAL N 2017 MANURE APPL FERTILIZER REQUIREMENTS CARRYOVER LBS./ACRE NEEDED FIELD ACRES ph P2O5 K2O CROP YIELD N P2O5 K2O IN LBS. N P2O5 K2O N P205 K2O Biosolids Legumes Manure Biosolids Legumes Manure Biosolids Legumes Manure Biosolids Legumes Manure

27 PAN =[(%NH 4 -N) (K v ) + (%NO 3 ) + (%N-Org) (F)](20) PAN = (Plant Available N in lbs./dt) K v = Volatilization factor: liquid-surface applied cake/incorporated liquid F = Mineralization factor for year 0-1 Source: COMAR

28 PAN =[(%NH 4 -N) (K v ) + (%NO 3 ) + (%N-Org) (F)](20) PAN = [(0.24) (1.0) + (0.0016) + (3.78) (0.3)](20) = [(0.24) + (0.0016) + (1.134)] x 20 = (1.375) x 20 = 27.5 lbs PAN/dry ton

29 N mineralized (Nm) = Mineralization factor (Km) x % Org. N x Application Rate (total dt) Pounds N mineralized this year from biosolids applied in year X Source: COMAR

30 Years After Application Biosolids Type (Km) Aerobically Digested or Lime-stabilized Anaerobically Digested Km = lbs. N mineralized/ton applied per % Org. N Source: COMAR (MD Nut. Mgmt. Manual)

31 Nm = Nm year 1 + Nm year Nm x Add lbs./acre N mineralized from each biosolids application

32 FARM: John Doe PAGE 1 ACRES: 73.5 NUTRIENT MANAGEMENT RECOMMENDATIONS SUMMARY DATE: 5/1/2017 PREPARED BY: Old Line Environmental, Inc. SOIL TEST RESULTS (INDEX VALUE) FERTILITY RECOMMENDATIONS CROP RESIDUAL N 2017 MANURE APPL FERTILIZER REQUIREMENTS CARRYOVER (LBS./ACRE) NEEDED FIELD ACRES ph P2O5 K2O CROP YIELD N P2O5 K2O IN LBS. N P2O5 K2O N P205 K2O Corn 125 bu Soybeans 40 bu Biosolids Wheat 70 bu Alfalfa 4 T Legumes L E Manure Corn 125 bu Soybeans 40 bu Biosolids Wheat 70 bu Alfalfa 4 T Legumes M O Manure Corn 125 bu Soybeans 40 bu Biosolids Wheat 70 bu Alfalfa 4 T Legumes O M Manure Corn 125 bu Soybeans 40 bu Biosolids Wheat 70 bu Alfalfa 4 T Legumes E L Manure

33 Use MD Ext. Service P-Site Index & PMT software Input Org-P value based on N application rate Determine High, Medium, Low Determine field suitability Data sent to MDE with NMPs Updated before next biosolids application

34 MDE Biosolids Division Current PAN & Nutrient values for all biosolids sources Information on regulations Existing permits/pending permits Permitted fields map Past application rates Most of this information is also available from the biosolids contractor.