Lambda-Cyhalothrin (Zeneca; formerly ICI). Mar 27, 1997. Pesticide Tolerances. Final Rule. Federal Register.

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Lambda-Cyhalothrin (Zeneca; formerly ICI). March 27, 1995. Pesticide Tolerances. Final Rule. Federal Register.

http://www.epa.gov/docs/fedrgstr/EPA-PEST/1995/March/Day-27/pr-194.html

[Federal Register: March 27, 1995]

ENVIRONMENTAL PROTECTION AGENCY

40 CFR Parts 180 and 186

[PP 1F3952, PP 1F3985, PP 2F4100, and FAP 1H5607/R2120; FRL-4945-8] RIN 2070-AB78

Lambda-Cyhalothrin; Pesticide Tolerances

AGENCY: Environmental Protection Agency (EPA).

ACTION: Final rule.

SUMMARY: This rule establishes tolerances for residues of the synthetic pyrethroid lambda-cyhalothrin in or on the raw agricultural commodities (RACs) tomatoes, cabbage, broccoli, head lettuce, dry bulb onion, and garlic and in or on the processed food/feed tomato pomaces. Zeneca, Inc., requested this regulation to establish maximum permissible levels for residues of the insecticide.

EFFECTIVE DATE: This regulation becomes effective March 27, 1995.

ADDRESSES: Written objections and hearing requests, identified by the document control number, [PP 1F3952, PP 1F3985, PP 2F4100, and FAP 1H5607/R2120], may be submitted to: Hearing Clerk (1900), Environmental Protection Agency, Rm. M3708, 401 M St., SW., Washington, DC 20460. A copy of any objections and hearing requests filed with the Hearing Clerk should be identified by the document control number and submitted to: Public Response and Program Resources Branch, Field Operations Division (7506C), Office of Pesticide Programs, Environmental Protection Agency, 401 M St., SW., Washington, DC 20460. In person, bring copy of objections and hearing requests to Rm. 1132, CM #2, 1921 Jefferson Davis Hwy., Arlington, VA 22202. Fees accompanying objections shall be labeled ``Tolerance Petition Fees'' and forwarded to: EPA Headquarters Accounting Operations Branch, OPP (Tolerance Fees), P.O. Box 360277M, Pittsburgh, PA 15251.

FOR FURTHER INFORMATION CONTACT: By mail: George T. LaRocca, Product Manager (PM) 13, Registration Division (7505C), Office of Pesticide Programs, Environmental Protection Agency, 401 M St., SW., Washington, DC 20460. Office location and telephone number: Second Floor, Crystal Mall #2, 1921 Jefferson Davis Highway, Arlington, VA 22202, (703)-305- 6100; e-mail: LaRocca.George@epamail.epa.gov.

SUPPLEMENTARY INFORMATION: EPA issued notices, published in the Federal Registers of April 3, 1991 (56 FR 13642), December 13, 1991 (56 FR 65080), and June 10, 1992 (57 FR 24644), which announced that Zeneca, Inc., (formerly ICI Americas, Inc.), 1800 Concord Pike, Wilmington, DE 19897, had submitted pesticide petitions (PPs) 1F3952, 1F3985, 2F4100 and food/feed additive petition (FAP) 1H5607 to EPA requesting that the Administrator, pursuant to sections 408(d) and 409(b) of the Federal Food, Drug, and Cosmetic Act (FFDCA), 21 U.S.C. 346a(d) and 348(b), establish tolerances for residues of the insecticide lambda-cyhalothrin [1-<greek-a>-(S),3-2-<greek-a>-(Z)]-(<plus-minus>)-cyano-(3- phenoxyphenyl)methyl 3-(2-chloro-3,3,3-trifluoro-1-propenyl)-2,2- dimethylcyclopropanecarboxylate] in or on the raw agricultural commodities (RACs) tomatoes at 0.06 part per million (ppm); cabbage at 0.4 ppm; broccoli at 0.4 ppm; lettuce (head) fresh, with wrapper leaves at 2.0 ppm; lettuce (head) fresh, without wrapper leaves at 0.3 ppm; dry bulb onions and garlic at 0.1 ppm; tomato pomaces (wet) at 0.6 ppm; and tomato pomaces (dry) at 4.0 ppm. EPA considers lettuce with wrapper leaves as the raw agricultural commodity not without wrapper leaves. Therefore, a proposed tolerance of 2.0 ppm for lettuce (head) is the correct commodity definition for tolerance purposes. On June 29, 1994, Zeneca, Inc., requested that certain petitions be amended by increasing the proposed tolerances for the RAC tomatoes (PP 1F3952) to 0.1 and by deleting the proposed tolerance on wet tomato pomace (1H5607) since there is no distinction between wet and dry pomace, and increasing the proposed feed additive tolerance to 6.0 ppm for tomato pomaces. (See the Federal Register of August 24, 1994 (59 FR 43580).)
Currently, tolerances for lambda-cyhalothrin have been established as combined residues of parent and its epimer without expressing the chemical identification of the epimer since an analytical method to distinguish parent from epimer was not available at the time. There are now validated methods to distinguish parent from epimer, and the tolerances will now be expressed as the combined residues of lambdacyhalothrin and its epimer. In addition, EPA has concluded that although the Chemical Abstract Services (CAS) names for lambdacyhalothrin and its epimer are more compact, to a chemist the structures are more easily derived from the IUPAC names. Therefore, the IUPAC nomenclature will replace the CAS names in this and future regulations for lambda-cyhalothrin. The [[Page 15684]] correct IUPAC names for lambda-cyhalothrin and its epimer are as follows: Lambdacyhalothrin, a 1:1 mixture of (S)-<greek-a>-cyano-3-phenoxybenzyl-(Z)- (1R,3R)-3- (2-chloro-3,3,3-trifluoroprop-1-enyl) -2,2- dimethylcyclopropanecarboxylate and (R)-<greek-a>-cyano-3- phenoxybenzyl-(Z)-(1S,3S) -3-(2-chloro-3,3,3-trifluoroprop-1-enyl)-2,2- dimethylcyclopropanecarboxylate. Epimer of lambda-cyhalothrin, a 1:1 mixture of (S)-<greek-a>-cyano-3-phenoxybenzyl-(Z)-(1S,3S)-3-(2-chloro- 3,3,3- trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate and (R)-<greek-a> -cyano-3-phenoxybenzyl-(Z)-(1R,3R)-3-(2-chloro-3,3,3- trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate. The scientific data submitted in the petition and other relevant material have been evaluated. The toxicological data considered in support of the tolerance include:

A metabolism study in rats demonstrated that distribution patterns and excretion rates in multiple oral dose studies are similar to single-dose studies. Accumulation of unchanged compound in fat upon chronic administration. Otherwise, rapidly metabolized and excreted.
A 12-month feeding study in dogs fed dose (by capsule) levels of 0, 0.1, 0.5, 3.5 milligrams(mg)/kilogram (kg)/day with a no-observedeffect level (NOEL) of 0.1 mg/kg/day. The lowest-observed-effect-level (LOEL) for this study is established at 0.5 mg/kg/day based upon clinical signs of neurotoxicity ataxia, muscle tremors, convulsions.
A developmental toxicity study in rats given gavage doses of 0, 5, 10, and 15 mg/kg/day with no developmental toxicity observed under the conditions of the study. Developmental NOEL is greater than 15 mg/ kg/day. Maternal NOEL and LOEL are established at 10 and 15 mg/kg/day, respectively. Reduced body weight and food consumption were observed during the dosing period.
A developmental toxicity study in rabbits given gavage doses of 0, 3, 10, and 30 mg/kg/day with no developmental toxicity observed under the conditions of the study. The maternal NOEL and LOEL are established at 10 and 30 mg/kg/day, respectively (decreased body weight gain was observed during the dosing period). The developmental NOEL is 30 mg/kg/day (highest dose tested).
A three-generation reproduction study in rats fed diets containing 0, 10, 30, and 100 ppm with no developmental toxicity observed at 100 ppm, highest dose tested. The maternal NOEL and LOEL for the study are established at 30 (1.5 mg/kg/day) and 100 ppm (5 mg/ kg/day), respectively, based upon decreased parental body weight gain. The reproductive NOEL and LOEL are established at 30 (1.5 mg/kg/day) and 100 ppm (5 mg/kg/day), respectively, based on decreased pup weight gain during weaning.
A 24-month chronic feeding/carcinogenicity study with rats fed diets containing 0, 10, 50, and 250 ppm. The NOEL was established at 50 ppm and LOEL at 250 ppm. Reduced body weight gain was observed at 250 ppm in both sexes throughout the study. The animals could have tolerated higher dose levels; however, the Agency considered the high dose to be approaching an adequate dose for a negative carcinogenicity study. There were no carcinogenic effects observed under the conditions of the study.
A carcinogenicity study in mice fed dose levels of 0, 20, 100, or 500 ppm (0, 3, 15, or 75 mg/kg/day) in the diet for 2 years. A systemic NOEL was established at 100 ppm and systemic LOEL at 500 ppm based on decreased body weight gain in males throughout the study at 500 ppm. The Agency has determined that the chemical was not tested at a sufficiently high dose level for carcinogenicity testing in female mice. In addition, due to an equivocal finding for mammary tumors in females (1/52, 0/52, 7/52, 6/52), the Agency classified the chemical as a Group D carcinogen.
The following genotoxicity tests were negative: a gene mutation assay (Ames), a chromosomal aberration study in rodents, an in vito cytogenetics assay, and a gene mutation study in Lymphoma cells. The acceptable Reference Dose (RfD) based on a NOEL of 0.1 mg/kg/ body weight/day from the chronic dog study and a safety factor of 100 is 0.001 mg/kg/body weight/day. A chronic dietary exposure/risk assessment has been performed for lambda-cyhalothrin using the above RfD. Available information on anticipated residues and percent crop treated was incorporated into the analysis to estimate the Anticipated Residue Contribution (ARC). The ARC is generally considered a more realistic estimate than an estimate based on tolerance level residues. The ARC from established tolerances and the current and pending actions are estimated to be 0.000192 mg/kg/bwt/day and utilize 19.24 per cent of the RfD for the U.S. population. The ARC for children, aged 1 to 6 years old, and nonnursing infants (subgroups most highly exposed) utilizes 32 and 58 percent of the RfD, respectively. Generally speaking, the Agency has no cause for concern if anticipated residues contribution for all published and proposed tolerances is less than the RfD.
The metabolism of the chemical in plants and livestock is adequately understood for this use. Any secondary residues occurring in meat and meat by products will be covered by the existing tolerances. There is no reasonable expectation of finite residues in poultry commodities; therefore, no tolerances are necessary at this time. An adequate analytical method (gas liquid chromatography with an electron capture detector) is available for enforcement purposes. The enforcement methodology has been submitted to the Food and Drug Administration for publication in the Pesticide Analytical Manual, Vol. II (PAM II). Because of the long lead time for publication of the method in PAM II, the analytical methodology is being made available in the interim to any one interested in pesticide enforcement when requested from: Calvin Furlow, Public Response and Program Resources Branch, Field Operations Divisions (7506C), Office of Pesticide Programs, Environmental Protection Agency, 401 M St., Washington, DC
Office location and telephone number: Rm. 1132, CM #2, 1921 Jefferson Davis Hwy., Arlington VA 22202, (703)-305-5232. The Agency issued a conditional registration for lambda-cyhalothrin for use on cotton with an expiration date of August 30, 1990 (see the Federal Register of May 24, 1988 (53 FR 18558)). The conditional registration was subsequently amended and extended to November 15, 1996 ((see the Federal Register of February 22, 1995 (60 FR 9783)). The registrations were amended and extended to allow time for submission and evaluation of additional environmental effects data. In order to evaluate the effects of the synthetic pyrethroids on fish and aquatic organisms and its fate in the environment, additional data were required to be collected and submitted during the period of conditional registration. Such requirements included a sediment bioavailability and toxicity study and a small-plot runoff study that must be submitted to the Agency by July 1, 1996. Due to the conditional status of the registration, tolerances have been established for lambda-cyhalothrin on a temporary basis (until November 15, 1997) on cottonseed, meat, fat and meat-byproducts of hogs, horses, cattle, goats, sheep and milk to cover residues expected to be present from use during the period of conditional registration. [[Page 15685]] To be consistent with the conditional registration status of lambda-cyhalothrin on cotton the Agency is establishing these tolerances with an expiration date of November 15, 1997.
There are currently no actions pending against the continued registration of this chemical. The pesticide is considered useful for the purposes which it is sought, and the pesticide is considered capable of achieving the intended physical or technical effect. Based on the information and data considered, the Agency has determined that the tolerances for the RACs will protect the public health and are in accordance with the terms of the proposed food additive tolerance for tomato pomaces and will be safe. Therefore, tolerances are established as set forth below.
Any person adversely affected by this regulation may, within 30 days after publication of this document in the Federal Register, file written objections to the regulation and may also request a hearing on those objections. Objections and hearing requests must be filed with the Hearing Clerk, at the address given above (40 CFR 178.20). A copy of the objections and/or hearing requests filed with the Hearing Clerk should be submitted to the OPP docket for this rulemaking. The objections submitted must specify the provisions of the regulation deemed objectionable and the grounds for the objections (40 CFR 178.25). Each objection must be accompanied by the fee prescribed by 40 CFR 180.33(i). If a hearing is requested, the objections must include a statement of the factual issue(s) on which a hearing is requested, the requestor's contentions on such issues, and a summary of any evidence relied upon by the objector (40 CFR 178.27). A request for a hearing will be granted if the Administrator determines that the material submitted shows the following: There is genuine and substantial issue of fact; there is a reasonable possibility that available evidence identified by the requestor would, if established, resolve one or more of such issues in favor of the requestor, taking into account uncontested claims or facts to the contrary; and resolution of the factual issue(s) in the manner sought by the requestor would be adequate to justify the action requested (40 CFR 178.32). Under Executive Order 12866 (58 FR 51735, October 4, 1993), the Agency must determine whether the regulatory action is ``significant'' and therefore subject to all the requirements of the Executive Order (i.e., Regulatory Impact Analysis, review by the Office of Management and Budget (OMB)). Under section 3(f), the order defines ``significant'' as those actions likely to lead to a rule (1) having an annual effect on the economy of $100 million or more, or adversely and materially affecting a sector of the economy, productivity, competition, jobs, the environment, public health or safety, or State, local or tribal governments or communities (also known as ``economically significant''); (2) creating serious inconsistency or otherwise interfering with an action taken or planned by another agency; (3) materially altering the budgetary impacts of entitlement, grants, user fees, or loan programs; or (4) raising novel legal or policy issues arising out of legal mandates, the President's priorities, or the principles set forth in this Executive Order. Pursuant to the terms of this Executive Order, EPA has determined that this rule is not ``significant'' and is therefore not subject to OMB review.
Pursuant to the requirements of the Regulatory Flexibility Act (Pub. L. 96-354, 94 Stat. 1164, 5 U.S.C. 601-612), the Administrator has determined that regulations establishing new tolerances or raising tolerance levels or establishing exemptions from tolerance requirements do not have a significant economic impact on a substantial number of small entities. A certification statement to this effect was published in the Federal Register of May 4, 1981 (46 FR 24950). List of Subjects in 40 CFR Parts 180 and 186
Environmental Protection, Administrative practice and procedure, Agricultural commodities, Feed additives, Pesticides and pests, Reporting and recordkeeping requirements.
Dated: March 21, 1995.
Stephen L. Johnson,
Director, Registration Division, Office of Pesticide Programs.
Therefore, chapter I of Title 40 of the Code of Federal Regulations is amended as follows:
PART 180--[AMENDED]
1. In part 180:
  a. The authority citation for part 180 continues to read as follows: Authority: 21 U.S.C. 346a and 371.
  b. By revising Sec. 180.438, to read as follows:
  Sec. 180.438 Lambda-cyhalothrin; tolerances for residues.
  Tolerances to expire on November 15, 1997, are established for the combined residues of the pyrethroid lambda-cyhalothrin and its epimer expressed as: Lambda-cyhalothrin, a 1:1 mixture of (S)-<greek-a>-cyano- 3-phenoxybenzyl-(Z)-(1R,3R)-3-(2-chloro-3,3,3- trifluoroprop-1-enyl)- 2,2- dimethylcyclopropanecarboxylate and (R)-<greek-a>-cyano-3- phenoxybenzyl-(Z)-(1S,3S)-3-(2-chloro-3,3,3- trifluoroprop-1-enyl)-2,2- dimethylcyclopropanecarboxylate and its epimer expressed as epimer of lambda-cyhalothrin, a 1:1 mixture of (S)-<greek-a>-cyano-3- phenoxybenzyl-(Z)-(1S,3S)-3-(2-chloro-3,3,3-trifluoroprop-1-enyl)-2,2- dimethylcyclopropanecarboxylate and (R)-<greek-a>-cyano-3- phenoxybenzyl-(Z)-(1R,3R)-3-(2-chloro-3,3,3- trifluoroprop-1-enyl)-2,2- dimethylcyclopropanecarboxylate, in or on the following raw agricultural commodities:
```
                                                              Parts per 
                         Commodity                             million  
```
```
                                                                        
```
  Broccoli................................................... 0.4 Cabbage.................................................... 0.4 Cattle, fat................................................ 0.02 Cattle, meat............................................... .01 Cattle, mbyp............................................... .01 Cottonseed................................................. 0.05 Dry bulb onion............................................. 0.1 Garlic..................................................... 0.1 Goats, fat................................................. 0.02 Goats, meat................................................ .01 Goats, mbyp................................................ .01 Hogs, fat.................................................. .01 Hogs, meat................................................. .01 Hogs, mbyp................................................. .01 Horses, fat................................................ 0.02 Horses, meat............................................... .01 Horses, mbyp............................................... .01 Lettuce, head.............................................. 2.0 Milkfat (reflecting 0.01 ppm in whole milk)................ 0.25 Sheep, fat................................................. 0.02 Sheep, meat................................................ .01 Sheep, mbyp................................................ .01 Tomatoes................................................... 0.1
```
                                                                        
```
  PART 186--[AMENDED]
  2. In part 186:
  a. The authority citation for part 186 continues to read as follows:
  Authority: 21 U.S.C. 348.
  b. By adding new Sec. 186.3765, to read as follows:
  Sec. 186.3765 Lambda-cyhalothrin.
  A tolerance to expire on November 15, 1997, of 6.0 parts per million is established for residues of the insecticide lambdacyhalothrin and its epimer expressed as: Lambda-cyhalothrin, a 1:1 mixture of (S)-<greek-a>-cyano-3-phenoxybenzyl-(Z)-(1R,3R)-3-(2-chloro- 3,3,3 trifluoroprop-1-enyl)-2,2-dimethylcyclopropanecarboxylate and [[Page 15686]] (R)-<greek-a>-cyano-3-phenoxybenzyl-(Z)-(1S,3S)-3-(2- chloro-3,3,3 trifluoroprop-1-enyl)- 2,2-dimethylcyclopropanecarboxylate and its epimer, a 1:1 mixture of (S)-<greek-a>-cyano-3-phenoxybenzyl- (Z)-(1S,3S)-3-(2-chloro-3,3,3 trifluoroprop-1-enyl)- 2,2- dimethylcyclopropanecarboxylate and (R)-<greek-a>-cyano- 3- phenoxybenzyl-(Z)-(1R,3R)-3-(2-chloro-3,3,3 trifluoroprop-1-enyl)-2,2- dimethylcyclopropanecarboxylate in tomato pomace (dry, wet) resulting from application of the insecticide to tomatoes.
  [FR Doc. 95-7586 Filed 3-23-95; 11:47 am] BILLING CODE 6560-50-F