You may take credit for odor control practices not listed in Chart 3 if DATCP pre-approves a multiplier for each of those practices. Follow the procedure in ATCP 51.14(5)(c) to obtain DATCP approval. If you obtain DATCP approval, you may include the approved practice and multiplier in odor worksheet calculations in the same manner as for odor control practices listed in Chart 3 (attach DATCP approval to your application).
Worksheet 2 (continued)
Odor Control Practice Specifications
Odor control practices identified in Chart 3 must meet the following specifications:
Animal Housing
Diet manipulation (A1) – Limit protein in animal diet by one of the following means:
• Match nutrient supply with animal requirements.
• Formulate low-protein amino acid supplemented diets.
• Add phytase enzyme ingredients.
• Process ingredients in ways that limit protein content of processed feed.
• Use phase feeding.
• Use split sex feeding.
• Minimize feed wastage.
Bio-filter (B1) – Vent air from animal housing areas through a bio-filter consisting of compost and wood chips, mixed at a rate of 30:70 to 50:50 (ratio by weight of compost to wood chips). The mixture must be at least 40% moisture by weight. The bio-filter must be 10” to 18” thick, and must have an area of at least 50 to 85 sq. ft. per 1000 cu. ft. per minute (cfm) of airflow.
Vegetable oil sprinkling (B2) – Sprinkle vegetable oil on floors in animal housing areas (swine) each day. Apply oil at start-up rate of approximately 40 milliliters per square meter per day (mL/m2-day) in the first 1-2 days of each production cycle. During the remainder of each production cycle, apply oil at maintenance rate of 5 mL/m2-day. Avoid oil applications to pens near fans, to areas near heaters, and to areas surrounding feeders.
Fresh water flush (B3) – Use fresh water to flush manure from floors of animal housing areas into collection or waste storage structures. Flush at least 3 times a day, and more often if necessary, to prevent manure from drying and sticking to floors. Flush must be adequate to remove manure solids effectively.
Treated water flush (B4) – Use treated manure effluent to flush manure from floors of animal housing areas into collection or waste storage structures. Flush at least 3 times a day, and more often if necessary, to prevent manure from drying and sticking to floors. Flush with waste storage effluent treated by one of the following means:
• Solids Separation and Reduction (see E4 below).
• Aeration (see F1 below).
• Anaerobic digestion (see E1 below).
Air Dam (B5) – Erect and maintain a wall (typically a 10-foot x 10-foot pipe frame and tarpaulin) placed at the end of a swine-finishing building, immediately downwind of the exhaust to deflect air and odor plume. Replace material used for the barriers (tarpaulins on a frame of solid wood, for example) as needed, which may be from a few years to decades, depending on the material.
Windbreak (C1) – Maintain a solid or porous windbreak, 10 to 50 feet from the odor source, which reduces forward momentum of airflow and vertically disperses the odor plume. The length of a windbreak shall be at least half of the perimeter of the animal housing. A windbreak may be constructed of vegetation or other materials. Vegetation windbreaks must contain at least 3 rows of trees and shrubs, of both fast and slow-growing species, that are well suited for the site. Windbreaks must be designed and constructed according to NRCS Technical Guide Standard 380 (June, 2002).
Frequent cleaning of animal housing area (D1) – Scrape and remove manure from animal housing areas at least 3 times a day.
Worksheet 2 (continued)
Waste Storage Facilities
Anaerobic digestion (E1) – Subject manure to managed biological decomposition within a sealed oxygen-free container (“digester”). Anaerobic digestion must meet design and operational standards necessary to achieve adequate odor control, including requirements for solids concentration, flow rates, retention time, and minimum temperatures. Systems must meet the following:
• Plug flow digester. Treats manure with a total solids concentration of 8 to 14%. Must be kept in the digester for at least 20 days at a temperature of 95° to 104° F. (35° to 40° C). The digester’s ratio of flow path width to fluid depth must be between 3.5:1 and 5:1.
• Complete mix digester. Treats manure with a total solids concentration of 2.5 to 10%. Must be kept in the digester for at least 17 days at a temperature of 95° to 104° F. (35° to 40° C.). The digester must have appropriate mixing devices to ensure complete mixing.
• Fixed film digester. Treats manure with a total solids concentration of not more than 5%. Must be kept in the digester for 1 to 6 days at a temperature of 59° to 99° F (15° to 39° C). Microbial support material must have at least 3-inch openings.
• Other systems. Use proprietary design and performance specifications that are commonly accepted and provide adequate odor mitigation.
Chemical or biological additives (E2) – Apply, to stored manure, chemical or biological additives that are scientifically proven to be effective in reducing odor from that manure when applied under applicable conditions and in applicable amounts.
Compost (E3) – Aerobically treat solid or semi-solid manure to create compost. Compost must have a carbon: nitrogen ratio of 25:1 to 40:1, and must consist of at least 40 to 60% moisture by weight. Composted material must be held at a temperature of more than 130° F. (54° C.) for more than 5 days.
Solids Separation and Reduction (E4) – Reduce the solid content of stored manure to an average of less than 2% solids through separation, multi-tiered pits or other means.
Water Treatment (E5) – Install and use a physical, chemical or biological process that removes the majority of contaminants from the waste stream, resulting in a liquid effluent meeting surface water discharge standards. The remaining solid fraction or sludge must be accounted for based on its form, and the management it is subject to.
Aeration (F1) – Use aeration equipment to maintain aerobic activity in stored manure. Aeration must maintain an average of 2 milligrams of dissolved oxygen per liter of manure stored in the upper foot of manure stored in the aerated structure between April and October.
Bio-cover (F2) – Cover the surface of waste storage structure with an 8″ to 12″ thick blanket of dry wheat, barley or good quality straw. The blanket must cover nearly all of the waste surface between the months of April and October. Add to the blanket as necessary (typically every 6 weeks to 4 months) to maintain the required cover.
Geotextile cover (F3) – Cover the surface of waste storage structure with a geotextile membrane that is at least 2.4 mm thick. The membrane must cover nearly all of waste surface between the months of April and October.
Impermeable cover (F4) – Cover the surface of waste storage structure with an impermeable barrier that prevents gas from escaping. Gas must be drawn off, and either treated or burned.
Natural crust (F5) – Maintain a natural crust of dry manure on the surface of stored manure. The natural crust must cover a substantial amount of the surface area of the stored manure, for most of the time between the months of April and October.
Bottom fill (F6) – Add manure to a liquid manure storage structure from the bottom so as to limit disturbance to the surface of the stored manure.
Worksheet 2 (continued)
Windbreak (G1) – Maintain a solid or porous windbreak, 10 to 50 feet from the odor source, which reduces forward momentum of airflow and vertically disperses the odor plume. The length of a windbreak shall be at least half of the perimeter of the waste storage facility. A windbreak may be constructed of vegetation or other materials. Vegetation windbreaks must contain at least 3 rows of trees and shrubs, of both fast and slow-growing species, that are well suited for the site. Windbreaks must be designed and constructed according to NRCS Technical Guide Standard 380 (June, 2002).
Animal Lots
Frequent cleaning of animal lot (H1) – Scrape and remove manure from animal lot surfaces at least once every 3 days. You may leave an undisturbed, compacted manure layer (1 to 2 inches thick) on the surface of unpaved animal lots to provide good surface sealing.
Drag animal lot (H2) – Drag manure in animal lots with harrow or disk at least once every 7 days during the months of April though October, to aerate and dry the manure.
Animal lot moisture control (I1) – Prevent runoff water from flowing onto animal lots from roofs and other surfaces. Use diversions or roof runoff systems identified in s. ATCP 50.70 or 50.85. Animal lots must have a grade of at least one percent to promote drainage and drying. Windbreak (J1) – Maintain a solid or porous windbreak, 10 to 50 feet from the odor source, which reduces forward momentum of airflow and vertically disperses the odor plume. The length of a windbreak shall be at least half of the perimeter of the animal lot. A windbreak may be constructed of vegetation or other materials. Vegetation windbreaks must contain at least 3 rows of trees and shrubs, of both fast and slow-growing species, that are well suited for the site. Windbreaks must be designed and constructed according to NRCS Technical Guide Standard 380 (June, 2002).
Applicant affirms that the information provided in Part A is accurate.
Signature of Applicant or Authorized Representative Date
* NOTE: A livestock facility is NOT required to attain or exceed this ratio of acres to animal units. But IF your livestock facility will attain or exceed this ratio and will have fewer than 500 animal units, you need NOT complete Part C of this worksheet.
Applicant affirms that the information provided in Part B is accurate.
Signature of Applicant or Authorized Representative Date
I certify that the documentation supporting this checklist is complete and accurate:
Signature of Qualified Nutrient Management Planner, other than applicant: ______________________________________
(qualified by 1. NAICC-CPCC, 2. ASA-CCA, 3. ASA-Professional Agronomist, 4. SSSA-Soil Scientist)
Signature of Applicant or Authorized Representative: _______________________________________________________
Professional Engineer’s
Embossed Seal
Print Name of Engineer (include WI License No.) or Certified Agricultural Engineering Practitioner
______________________________________________________________ _________
Signature of Engineer or Practitioner Date
___________________________________________________________________________
Name of Firm and Address
1 Treat multiple lots as one animal lot if runoff from the animals lots drains to the same treatment area or if runoff from the animal lot treatment areas converges or reaches the same surface water within 200 feet of any of those treatment areas.
2 Indicated by a solid or dashed blue line on a 1:24,000 scale USGS topographic map.
3 “Minor alterations” are repairs or improvements that do not result in a substantially altered animal lot. “Minor alterations” may include conservation practices such as runoff diversions, contouring, and planting vegetation.
4 Runoff may be diverted by means of earthen diversions, curbs, walls, gutters, waterways or other practices, as appropriate.
5 Use safe methods to dispose of collected leachate. For example, leachate may be transferred to waste storage structures and then applied to land at agronomic rates.
______________________________________________________________ _________
Signature of Applicant or Authorized Representative Date
Professional Engineer’s
Embossed Seal
Print Name of Engineer (include WI License No.) or Certified Practitioner
_______________________________________________________________ _________
Signature of Engineer or Practitioner Date
________________________________________________________________
Name of Firm and Address
_____________________________
1 Runoff may be diverted by means of earthen diversions, curbs, walls, gutters, waterways or other practices, as appropriate.
2 Use safe methods to dispose of collected leachate. For example, leachate may be transferred to waste storage and then applied to land at agronomic rates.
3 A tile system or curtain drain may be used to intercept lateral groundwater seepage, as necessary, to achieve the required distance to groundwater.
