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Cerințe de prelevare a probelor de sol în Statele Unite

Cerințe de prelevare a probelor de sol în Statele Unite

Reguli federale: 40 CFR Partea 412, Operațiuni concentrate de hrănire a animalelor, Categoria sursei punctuale.

Eșantionarea solului în Statele Unite: frecvență, suprafață, adâncime și carote

Cât de des trebuie să prelevați probe de sol în Statele Unite?

Soil sampling rules in the United States, with the exact wording of each source
Country / region Purpose / programme Time / frequency Area per sample Method Depth Cores Status and source
United States
United StatesFederal rule in every state. State rules below may add to it.Phosphorus soil analysis for manure applicationFederal CAFO effluent guidelines, nutrient management plan
  • Repeat Soil phosphorus at least once every 5 years. Manure nitrogen and phosphorus at least once a year.
Not specifiedNot specifiedNot specifiedNot specifiedConditional40 CFR § 412.4 (govinfo, 2025 edition)
Who it applies to, the exact wording and every source
Who it applies to
Concentrated animal feeding operations that land-apply manure, litter or process wastewater, at or above these sizes: 700 mature dairy cows; 1,000 other cattle or veal calves; 2,500 swine of 55 lb or more, or 10,000 smaller swine; 55,000 turkeys; 30,000 laying hens or broilers with a liquid manure system; 82,000 laying hens or 125,000 other chickens with another manure system.
Outside the rule
Operations below those sizes, and any operation that does not land-apply manure, litter or process wastewater.
In force from
Under review
Legal text
40 CFR Part 412, Concentrated Animal Feeding Operations Point Source Category, § 412.4(c)(3), with § 412.30 and § 412.40

The wording in the source

Timing

  • Manure must be analyzed a minimum of once annually for nitrogen and phosphorus content, and soil analyzed a minimum of once every five years for phosphorus content.

    § 412.4(c)(3), Manure and soil sampling

Who it applies to

  • This section applies to any CAFO subject to subpart C of this part (Dairy and Beef Cattle other than Veal Calves) or subpart D of this part (Swine, Poultry, and Veal Calves).

    § 412.4(a)

  • Each CAFO subject to this section that land applies manure, litter, or process wastewater, must do so in accordance with the following practices

    § 412.4(c)

Outside the rule

  • This subpart does not apply to such CAFOs with less than the following capacities: 700 mature dairy cows whether milked or dry; 1,000 cattle other than mature dairy cows or veal calves.

    § 412.30

  • This subpart does not apply to such CAFOs with less than the following capacities: 2,500 swine each weighing 55 lbs. or more; 10,000 swine each weighing less than 55 lbs.; 30,000 laying hens or broilers if the facility uses a liquid manure handling system; 82,000 laying hens if the facility uses other than a liquid manure handling system; 125,000 chickens other than laying hens if the facility uses other than a liquid manure handling system; 55,000 turkeys; and 1,000 veal calves.

    § 412.40

Sources

Sources re-checked every two months, last update October 2026. Reviewed by GeoPard editorial team.

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