40 CFR § 180.339 - MCPA; tolerances for residues.

---
identifier: "/us/cfr/t40/s180.339"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "40 CFR § 180.339 - MCPA; tolerances for residues."
title_number: 40
title_name: "Protection of Environment"
section_number: "180.339"
section_name: "MCPA; tolerances for residues."
chapter_name: "ENVIRONMENTAL PROTECTION AGENCY"
subchapter_number: "E"
subchapter_name: "PESTICIDE PROGRAMS"
part_number: "180"
part_name: "TOLERANCES AND EXEMPTIONS FOR PESTICIDE CHEMICAL RESIDUES IN FOOD"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "21 U.S.C. 321(q), 346a and 371."
regulatory_source: "36 FR 22540, Nov. 25, 1971, unless otherwise noted."
cfr_part: "180"
---


# 180.339 MCPA; tolerances for residues.

(a) *General.* Tolerances are established for residues of the herbicide MCPA, including its metabolites and degradates, in or on the commodities in table 1 to this paragraph (a). Compliance with the tolerance levels specified in Table 1 to this paragraph (a) is to be determined by measuring only MCPA, 2-(4-chloro-2-methylphenoxy)acetic acid, in or on the commodity.

Table 1 to Paragraph (**a**)

| Commodity | Parts permillion |
| --- | --- |
| Alfalfa, forage | 0.5 |
| Alfalfa, hay | 2.0 |
| Barley, grain | 1.0 |
| Barley, hay | 40 |
| Barley, straw | 25 |
| Cattle, fat | 0.1 |
| Cattle, meat | 0.1 |
| Cattle, meat byproducts | 0.1 |
| Clover, forage | 0.05 |
| Clover, hay | 0.05 |
| Flax, seed | 0.1 |
| Goat, fat | 0.1 |
| Goat, meat | 0.1 |
| Goat, meat byproducts | 0.1 |
| Grain, aspirated fractions | 3.0 |
| Grass, forage | 300 |
| Grass, hay | 20 |
| Hog, fat | 0.1 |
| Hog, meat | 0.1 |
| Hog, meat byproducts | 0.1 |
| Horse, fat | 0.1 |
| Horse, meat | 0.1 |
| Horse, meat byproducts | 0.1 |
| Lespedeza, forage | 0.5 |
| Lespedeza, hay | 2.0 |
| Milk | 0.1 |
| Oat, forage | 20 |
| Oat, grain | 1.0 |
| Oat, hay | 115 |
| Oat, straw | 25 |
| Pea, dry | 0.1 |
| Pea, field, hay | 0.1 |
| Pea, field, vines | 0.1 |
| Pea, succulent | 0.1 |
| Rye, forage | 20 |
| Rye, grain | 1.0 |
| Rye, straw | 25 |
| Sheep meat | 0.1 |
| Sheep meat byproducts | 0.1 |
| Sheep, fat | 0.1 |
| Tea, dried | 0.3 |
| Trefoil, forage | 0.5 |
| Trefoil, hay | 2.0 |
| Vetch, forage | 0.5 |
| Vetch, hay | 2.0 |
| Wheat, forage | 20 |
| Wheat, grain | 1.0 |
| Wheat, hay | 115 |
| Wheat, straw | 25 |
| Wheatgrass, intermediate, forage | 50 |
| Wheatgrass, intermediate, grain | 0.2 |
| Wheatgrass, intermediate, hay | 50 |
| Wheatgrass, intermediate, straw | 50 |

(b)-(d) [Reserved]

[86 FR 71154, Dec. 15, 2021]