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Index to Cleared Science Reviews Methamidophos (Pc Code 101201)
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September 18, 1970. Letter. 14 Page(s).
Lamar Dale. Pesticide Registration Branch.
Reg. No. 239-EGEA. Referral Date - 4/2/70.
Inert ingredient information on page 2 is not included.
Pages 4-7 removed, draft label.
Tox review 000972.
Document (PDF) (1,631 KB PDF).
March 31, 1975. Summary. 9 Page(s).
J.W. Akerman. Ecological Effects Branch.
Monitor 4 Spray. Petition 5F1571.
Pages 7-9 removed, draft label.
Document (PDF) (338 KB PDF).
June 03, 1975. Review. 4 Page(s).
Norman Cook. Efficacy and Ecological Effects Branch.
Petition 239-Exp./5G1624. Monitor 4 Spray.
Obtain Exp. Permit for Use of Monitor in Almonds.
Document (PDF) (151 KB PDF).
September 16, 1975. Memorandum. 4 Page(s).
David Ritter. Toxicology Branch.
FAP#5H5071/PP#5F1571: Monitor in racs - reject;
Letter of 8/8/75; T.A. Gardner, PM # 15.
Tox Review No. 000974.
Document (PDF) (390 KB PDF).
September 14, 1976. Review. 3 Page(s).
Ronald Ney. Efficacy and Ecological Effects Branch.
239-2452 MONITOR Technical registration of technical material.
Document (PDF) (109 KB PDF).
October 25, 1976. Review. 3 Page(s).
Frederick Betz. Efficacy and Ecological Effects Branch.
File No. 239-EULE. Monitor. Registration - Technical Grade.
Document (PDF) (172 KB PDF).
November 05, 1976. Review. 6 Page(s).
William Greear. Toxicology Branch.
239-EULE Chevron Monitor Technical Acute Oral (Rat),
Acute Dermal (Rabbit), Acute Inhalation (Rats).
Document (PDF) (370 KB PDF).
June 08, 1977. Review. 2 Page(s).
R. Felthousen. Efficacy and Ecological Effects Branch.
Reg. No. 3125-280. Monitor 4. Amendment.
Document (PDF) (63 KB PDF).
July 19, 1977. Review. 4 Page(s).
Joanne Edwards. Efficacy and Ecological Effects Branch.
Reg. No. 3125-280 Add whiteflies on cotton Acc. 228720.
Document (PDF) (201 KB PDF).
September 14, 1977. Memo to File. 1 Page(s).
James Akerman. Environmental Safety Section.
Interim Reproduction Study Results with Bolstar and Monitor.
Document (PDF) (80 KB PDF).
October 18, 1977. Review. 3 Page(s).
Phil Hutton. Efficacy and Ecological Effects Branch.
Reg. No. 3125-280 Acc. 228720, 231944 Add
Whiteflies to Cotton Col. Pot. Beetle Statement.
Document (PDF) (140 KB PDF).
April 10, 1978. Memorandum. 6 Page(s).
John Doherty. Toxicology Branch.
Pesticide Registration #3125-280. Caswell #378A.
Inert ingredient information on page 1 is not included.
Tox review 000977.
Document (PDF) (1,241 KB PDF).
June 27, 1978. Review. 2 Page(s).
Ronald Ney. Efficacy and Ecological Effects Branch.
Reg. No. 3125-280 Add sprinkler irrigation use on
potatoes (currently registered).
Document (PDF) (64 KB PDF).
August 22, 1978. Memorandum. 3 Page(s).
Larry Anderson. Toxicology Branch.
Eye Irritation and Skin Irritation Studies to
Support Registration of Chevron Monitor Technical.
Document (PDF) (159 KB PDF).
August 30, 1978. Review. 32 Page(s).
Norman Cook. Efficacy and Ecological Effects Branch.
Reg. No. 3125-280. Monitor 4. Registration of New
Use Pattern - Potatoes.
Document (PDF) (159 KB PDF).
September 07, 1978. Review. 21 Page(s).
Norman Cook. Efficacy and Ecological Effects Branch.
Section 18 for Use of Monitor in Celery (Florida Only).
Document (PDF) (1,359 KB PDF).
November 04, 1978. Review. 4 Page(s).
Ronald Ney. Environmental Fate Branch.
EPA Reg. No. 3125-280, 8F2116 use
on pepper and sugar beets.
Document (PDF) (1,035 KB PDF).
February 19, 1979. Review. 4 Page(s).
Dennis McLane. Efficacy and Ecological Effects Branch.
Reg. No. 239-2404. Chevron Ortho Monitor 4 Spray
(Insecticide). Amendment to Add the Use on Celery (Florida).
Document (PDF) (170 KB PDF).
July 12, 1979. Review. 8 Page(s).
Henry Craven. Ecological Effects Branch.
Section 18 for Use of Monitor in Celery (Florida Only).
Document (PDF) (343 KB PDF).
July 17, 1979. Review. 5 Page(s).
Larry Anderson. Toxicology Branch.
Section 18 - Specific Emergency Exemption for the Use
of Monitor.. on Celery to Control Leafminers.
Tox Review 001013.
Document (PDF) (396 KB PDF).
August 09, 1979. Review. 2 Page(s).
Richard Stevens. Ecological Effects Branch.
Reg. No. 239-2404. Monitor. New Data for Validation.
Document (PDF) (85 KB PDF).
August 23, 1979. Review. 5 Page(s).
Richard Stevens. Ecological Effects Branch.
Reg. No. 3125-280. Monitor. Avian Reproduction
Studies Validation; Incremental Risk Assessment.
Document (PDF) (264 KB PDF).
November 19, 1979. Memorandum. 2 Page(s).
David Ritter. Toxicology Branch.
PP#9G2151/9H5223-EUP-RLU: Proposal to
Establish a Temporary Tolerance of 0.1 PPM
of the Insecticide, Monitor, in Peanuts Peanut
Hulls at 0.4 PPM; and a Feed Additive Tolerance
of 0.2 PPM in Peanut Meal. Amendment of 5/23/79.
Tox Review No. 000975.
Document (PDF) (185 KB PDF).
December 28, 1979. Review. 5 Page(s).
Leslie Touart. Ecological Effects Branch.
Reg. No. 239-2404. Monitor 4 Spray.
Amended Registration on Celery.
Document (PDF) (197 KB PDF).
February 01, 1980. Memorandum. 2 Page(s).
Larry Anderson. Toxicology Branch.
Mutagenicity Study on Monitor Technical
- Addition of Data to Files.
EPA File Symbol 239-EULE or 239-2452 Acc. 241145.
Document (PDF) (137 KB PDF).
June 18, 1980. Review. 3 Page(s).
Leslie Touart. Ecological Effects Branch.
Reg. No. 3125-280. Monitor 4. Incremental
Risk Assessment for Potato Use.
Document (PDF) (89 KB PDF).
December 30, 1980. Review. 1 Page(s).
Gary Burin. Toxicology Branch.
Mutagenic Study with Monitor Technical in
Albino Mice (Dominant Lethal) (8/19/71)
- IBT Validation Report.
Tox Review 000982.
Document (PDF) (189 KB PDF).
January 09, 1981. Review. 3 Page(s).
Daniel Rieder. Ecological Effects Branch.
Reg. Nos. 239-2404, -2452. Monitor 4 Spray.
Incremental Risk Assessment of Proposed
Conditional Registration of Celery Use
(Reply to EEB Review of Celery by Submission of Data).
Document (PDF) (150 KB PDF).
January 22, 1981. Memorandum. 1 Page(s).
Byron Backus. Insecticide Rodenticide Branch.
EPA Reg. No. 3125-280 MONITOR 4 Caswell #378A.
Document (PDF) (45 KB PDF).
January 30, 1981. Review. 1 Page(s).
Laurence Chitlik. Toxicology Branch.
Three-Generation Reproduction Study on SX-171
(Technical RE-9006 75%) in Albino Rats (1/16/70)
- IBT Validation Report.
Tox review 000986.
Document (PDF) (160 KB PDF).
February 20, 1981. Review. 1 Page(s).
Laurence Chitlik. Toxicology Branch.
IBT Validation Report Two Year Chronic
Oral Toxicity..in Albino Rats
Tox Review 001711.
Document (PDF) (44 KB PDF).
April 03, 1981. Review. 7 Page(s).
Miachel Rexrode. Ecological Effects Branch.
Monitor 4 Spray. Proposed EUP for Use
on Safflowers in California and Arizona.
Document (PDF) (291 KB PDF).
August 06, 1981. Review. 1 Page(s).
Laurence Chitlik. Toxicology Branch.
Teratogenic Study with Monitor Technical
in Albino Rabbits (November 18, 1971)
- IBT Validation Report.
Tox Review 001698.
Document (PDF) (115 KB PDF).
September 15, 1981. Memorandum. 1 Page(s).
Krystyna Locke. Toxicology Branch.
Invalid Status of Two IBT Studies which have not
yet been validated, 90-day dog feeding study (No. c 8128)
and 2-year dog feeding study (No. C 5486).
Tox Review 000996.
Document (PDF) (48 KB PDF).
September 15, 1981. Memorandum. 1 Page(s).
Krystyna Locke. Toxicology Branch.
Change of Core-Grade Classification for Two
IBT studies, Potentiation (No. A1117) and
Cholinesterase (No. 636-02498). (MRID No. 43248102),
requested by the California EPA.
MRID NOS. 43248101 & 43248102.
Tox Review No. 000994.
Document (PDF) (50 KB PDF).
November 06, 1981. Review. 7 Page(s).
William Rabert. Ecological Effects Branch.
File No. 82-FL-03. Monitor 4. Proposed Section
18 for Celery in Florida (Leafminer).
Document (PDF) (442 KB PDF).
November 20, 1981. Memorandum. 14 Page(s).
Krystyna Locke. Toxicology Branch.
Monitor 4 Liquid Insecticide: Amended Registration
to Add Sprinkler Irrigation of Potatoes--A Resubmission.
EPA Reg. No. 3125-280. Accession Nos. 242410 and 242411.
Document (PDF) (744 KB PDF).
December 09, 1981. Final Report. 25 Page(s).
Enviro Control, Inc.
Methamidophos. Task 2: Topical Discussions.
Document (PDF) (939 KB PDF).
December 09, 1981. Final Report. 64 Page(s).
Enviro Control, Inc.
Methamidophos. Task 1: Review and Evaluation of Individual Studies.
Document (PDF) (2,650 KB PDF).
December 09, 1981. Final Report. 7 Page(s).
Enviro Control, Inc.
Methamidophos. Task 3: Environmental Fate Profile.
Document (PDF) (313 KB PDF).
December 18, 1981. Final Report. 5 Page(s).
Enviro Control, Inc.
Methamidophos. Task 4: Exposure Profile.
Document (PDF) (228 KB PDF).
February 18, 1982. Review. 7 Page(s).
Ecological Effects Branch.
Reg. No. 239-2404. Monitor 4 Spray.
Submission of Bobwhite Quail Dietary LC50 Data.
Document (PDF) (299 KB PDF).
March 01, 1982. Review. 5 Page(s).
Daniel Rieder. Ecological Effects Branch.
File No. 82-CA-14. Monitor 4 Liquid Insecticide.
Proposed Section 18 for Use on Celery.
Document (PDF) (254 KB PDF).
March 05, 1982. Science Chapter. 15 Page(s).
Douglas Urban. Ecological Effects Branch.
Registration Standard for Methamidophos.
Document (PDF) (838 KB PDF).
March 19, 1982. Review. 3 Page(s).
Douglas Urban. Ecological Effects Branch.
Acute Oral Toxicity Study with Monitor
Technical to Bobwhite Quail. MRID 00041313.
Document (PDF) (136 KB PDF).
March 19, 1982. Review. 6 Page(s).
Douglas Urban. Ecological Effects Branch.
Acute Oral Toxicity Study with Monitor
Technical in Mallard Ducks. MRID 00014095.
Document (PDF) (291 KB PDF).
March 30, 1982. Science Chapter. 26 Page(s).
Toxicology Branch.
Topical Discussions - Methamidophos
(O,S-Dimethyl phosphoramidothioate).
Tox Review 003968.
Document (PDF) (4,164 KB PDF).
September 30, 1982. Memorandum. 2 Page(s).
William Miller. Insecticide-Rodenticide Branch.
Amendment to the Methamidophos Registration
Standard Issued September 30, 1982.
Document (PDF) (100 KB PDF).
October 22, 1982. Memorandum. 1 Page(s).
Edwin Budd. Toxicology Branch.
Monitor: Returning of an Antidote Study.
Document (PDF) (45 KB PDF).
December 15, 1982. Memorandum. 4 Page(s).
Krystyna Locke. Toxicology Branch.
Monitor: Mutagenic Study (Ames Test).
EPA Accession No.: None. EPA Record No. 64423.
Tox review 002337.
Document (PDF) (621 KB PDF).
January 13, 1983. Review. 1 Page(s).
Laurence Chitlik. Toxicology Branch.
IBT Validation Report Two Year Chronic Oral
Toxicity of RE-9006-III, SX -115 in Beagle Dogs.
Tox Review 002987.
Document (PDF) (51 KB PDF).
February 04, 1983. Memorandum. 8 Page(s).
Edwin Budd. Toxicology Branch.
Evaluation of a study entitled "The Efficacy of Atropine
Sulfate and Pralidoxime Chloride (2-PAM) as Antidotes
for the Acute Oral Toxicity of Monitor Technical (SX-1244)
in Rats", SOCAL 1678, S-1780. August 3, 1982.
(Revision of Report Dated March 4, 1982.)
EPA Acc. No. 246457.
Document (PDF) (467 KB PDF).
March 09, 1983. Review. 13 Page(s).
Mary Gessner. Ecological Effects Branch.
Reg. No. 239-2404. Monitor 4 Spray. Proposed
Conditional Registration of Celery Use (Florida Only).
Document (PDF) (540 KB PDF).
May 25, 1983. Review. 6 Page(s).
Ed Fite. Ecological Effects Branch.
Reg. No. 239-2404. Monitor 4 Spray. Proposed
Conditional Registration of Sugarbeets Use.
Document (PDF) (337 KB PDF).
January 30, 1984. Memorandum. 7 Page(s).
Reto Engler. Toxicology Branch.
Request for waiver of subchronic (21-day)
dermal toxicity study.
Document (PDF) (336 KB PDF).
Attachment(s) following:
June 20, 1984. Memorandum.
William Miller. Insecticide -Rodenticide Branch.
Reevaluation of Reregistration Data Requirements for
Methamidophos---------ACTION MEMORANDUM----.
*End of attachments*
February 17, 1984. Review. 3 Page(s).
Wayne Faatz. Ecological Effects Branch.
Reg. No. 3125-EUP-182. Monitor 4. Submission of Data in
Response to Previous Review.
Document (PDF) (143 KB PDF).
February 28, 1984. Memorandum. 2 Page(s).
Deloris Graham. Fungicide-Herbicide Branch.
EPA Registration No. 239-2452 Chevron Monitor Technical
Acute Inhalation Study. Acc. 250925.
Document (PDF) (117 KB PDF).
August 23, 1984. Memorandum. 8 Page(s).
Richard Loranger. Residue Chemistry Branch.
Reg. No. 3125-280. Methamidophos (Monitor) on tobacco.
Accession Number 252991.
Document (PDF) (494 KB PDF).
September 19, 1984. Review. 5 Page(s).
Ken Clark. Ecological Effects Branch.
Reg. No. 239-2404. Monitor 4 Spray. Proposed
Registration of Safflower Use (California and Arizona Only).
Document (PDF) (226 KB PDF).
December 27, 1984. Memorandum. 2 Page(s).
Richard Loranger. Residue Chemistry Branch.
EPA Reg. No. 3125-280. Methamidophos (Monitor)
on tobacco. Letter dated 10/29/84.
Document (PDF) (136 KB PDF).
March 15, 1985. Memorandum. 2 Page(s).
Krystyna Locke. Toxicology Branch.
Methamidophos (Monitor) on Tobacco: Deferral from
Residue Chemistry Branch/HED (TS-769).
Document (PDF) (87 KB PDF).
July 03, 1985. Review. 4 Page(s).
M. Rostker. Ecological Effects Branch.
Reg. No. 3125-341. Monitor. Submission of
Miscellaneous Data for EEB Files.
Document (PDF) (184 KB PDF).
August 30, 1985. Memorandum. 2 Page(s).
Leung Cheng. Residue Chemistry Branch.
EPA Reg. No. 3125-280. Methamidophos on
Lettuce. No Accession Number. RCB No 1249.
Document (PDF) (120 KB PDF).
September 19, 1985. Memorandum. 5 Page(s).
Allan Reiter. Residue Chemistry Branch.
EPA Sequence No. 3125-341. Review of Unsolicited
Data on Methamidophos.
Acc. #256384, 256383, 256387,; RCB# 1112.
Document (PDF) (267 KB PDF).
September 23, 1985. Memorandum. 4 Page(s).
Michael Slimak. Ecological Effects Branch.
Amendment to the Registration Standard for Methamidophos.
Document (PDF) (284 KB PDF).
September 23, 1985. Memorandum. 6 Page(s).
Margaret Rostker. Ecological Effects Branch.
Reg. No. 239-2452. Monitor. Submission of Data
Relative to Registration Standard; See PM's Comments/Questions.
Document (PDF) (338 KB PDF).
September 23, 1985. Review. 3 Page(s).
William Anthony. Residue Chemistry Branch.
3125-280 Methamidophos: Cauliflower and Cotton.
Amended Registration (RCB 1248).
Document (PDF) (153 KB PDF).
September 24, 1985. Review. 9 Page(s).
M. Rostker. Ecological Effects Branch.
Reg. No. 3125-280.Monitor 4. To Reinstate Lettuce
on Federal Label.Page 9 removed, draft label.
Document (PDF) (402 KB PDF).
September 30, 1985. Data Eval. Rec. 4 Page(s).
Margaret Rostker. Ecological Effects Branch.
The Acute Toxicity of Methamidophos (Technical) to
Mysidosis bahia (Bay Shrimp). Accession No. 258108.
Document (PDF) (125 KB PDF).
September 30, 1985. Data Eval. Rec. 4 Page(s).
Margaret Rostker. Ecological Effects Branch.
The Acute Toxicity of Methamidophos (Technical) to Sheepshead
Minnow (Cyprinodon variegatus). Accession No. 258108.
Document (PDF) (137 KB PDF).
October 03, 1985. Data Eval. Rec. 3 Page(s).
Margaret Rostker. Ecological Effects Branch.
Shell Deposition in Eastern Oyster (Crassostrea virginica)
Exposed to Monitor 4 in a Static Test System.
Accession No. 258108.
Document (PDF) (114 KB PDF).
October 03, 1985. Data Eval. Rec. 5 Page(s).
Margaret Rostker. Ecological Effects Branch.
Simulated Field Study of Monitor 4 Toxicity to
Bobwhite Quail. Accession No. 258108.
Document (PDF) (229 KB PDF).
January 07, 1986. Memorandum. 12 Page(s).
Pamela Hurley. Toxicology Branch.
EPA # 239-2452. Review of Acute Inhalation Studies and
Dermal Sensitization Study Required to Complete Review
of Labeling for Reregistration of Methamidophos (Monitor).
Acc 257935, 250925.
Tox review 004877.
Document (PDF) (870 KB PDF).
January 23, 1986. Review. 2 Page(s).
M. Rostker. Ecological Effects Branch.
Reg. No. 3125-280. Monitor 4. Proposed Registration
of Lentils, Melons, Peas, Peanuts, Soybeans, Watermelons.
Document (PDF) (158 KB PDF).
January 30, 1986. Memorandum. 14 Page(s).
Charles Tricholo. Residue Chemistry Branch.
Methamidophos registration Standard: Addendum #1.
Document (PDF) (737 KB PDF).
Attachment(s) following:
January 17, 1986. Final Report.
Dynamac Corporation.
Methamidophos Task 4: Addendum #1. Registration
Standard-Residue Chemistry Chapter.
*End of attachments*
February 05, 1986. Review. 8 Page(s).
M. Rostker. Ecological Effects Branch.
Reg. No. 239-2404. Monitor 4 Spray.
Proposed Registration of Use on Eggplant (Florida Only).
Document (PDF) (411 KB PDF).
March 18, 1986. Review. 8 Page(s).
Emil Regelman. Exposure Assessment Branch.
Reg. Nos. 239-2452 & 3125-341. Methamidophos.
1) Review of Volatility and Confined Crops Accumulation Data;
2) Request for Advice re Field Studies on Same.
Inert ingredient information on pages 4, 6 is not included.
Document (PDF) (531 KB PDF).
June 30, 1986. Memorandum. 13 Page(s).
M. Rostker. Ecological Effects Branch.
Monitor: Registrant 90-Day Response to 3c2B Letter.
Document (PDF) (724 KB PDF).
July 10, 1986. Review. 3 Page(s).
Emil Regelman. Exposure Assessment Branch.
Reg. Nos. 239-2452 & 3125-341.
Methamidophos. Data Screening.
Document (PDF) (87 KB PDF).
July 17, 1986. Memorandum. 199 Page(s).
Krystyna Locke. Toxicology Branch.
EPA ID Number: 239-2452; Methamidophos (Monitor):
Evaluation of toxicity data requested in the Registration Standard.
Accession Nos. 257622 and 257628 thru 257632. (continued).
Document (PDF) (23,770 KB PDF).
Attachment(s) following:
July 17, 1986. Memorandum.
Krystyna Locke. Toxicology Branch.
Quality control information on pages 10-11 not included.
Pages 29-41, 58-61, 72-75, 83-94, 111-119, 128-131,
139-141, 149-152, 164, 166, 176-184,
197-199 removed, registrant data
Tox review 005313.
*End of attachments*
December 10, 1986. Memorandum. 4 Page(s).
Michael Metzger. Residue Chemistry Branch.
Methamidophos (Monitor 4, EPA Reg. No. 3125- 280)
on Cauliflower. Amended Registration request for Reduced PHI.
No Acc. Number RCB #1464.
Document (PDF) (154 KB PDF).
April 22, 1987. Review. 63 Page(s).
Emil Regelman. Exposure Assessment Branch.
Reg. Nos. 239-2452; 3125-341; 3125-348; 3125-280.
Methamidophos. Addendum to a Standard. Acc 259942.
Document (PDF) (3,174 KB PDF).
May 22, 1987. Memorandum. 1 Page(s).
Pamela Hurley. Toxicology Branch.
Methamidophos (Monitor). Verification of RfD.
Document (PDF) (60 KB PDF).
September 21, 1987. Review. 3 Page(s).
Richard Stevens. Ecological Effects Branch.
Reg. No. 239-2452. Monitor. Registrant Request
for Concurrence on Meeting Notes on Methamidophos.
Document (PDF) (116 KB PDF).
December 16, 1987. Review. 10 Page(s).
Richard Felthousen. Ecological Effects Branch.
Reg. No. 239-2452. Methamidophos.
Residue Monitoring Protocol (Potatoes).
Document (PDF) (469 KB PDF).
December 16, 1987. Review. 6 Page(s).
Richard Felthousen. Ecological Effects Branch.
Reg. No. 239-2452. Methamidophos.
Protocol Review - Celery (Florida).
Document (PDF) (303 KB PDF).
December 16, 1987. Review. 6 Page(s).
Richard Felthousen. Ecological Effects Branch.
Reg. No. 239-2452. Methamidophos.
Residue Monitoring Protocol (Sugarbeets).
Document (PDF) (327 KB PDF).
December 16, 1987. Review. 7 Page(s).
Richard Felthousen. Ecological Effects Branch.
Reg. No. 239-2452. Methamidophos. Protocol Review -
Site Search: Baseline Survey (Cabbage in Wisconsin).
Document (PDF) (375 KB PDF).
December 16, 1987. Review. 7 Page(s).
Richard Felthousen. Ecological Effects Branch.
Reg. No. 239-2452. Methamidophos. Protocol Review
- Site Search: Baseline Survey (Cotton in Alabama).
Document (PDF) (362 KB PDF).
April 05, 1988. Review. 3 Page(s).
Frank Davido. Exposure Assessment Branch.
Reg. Nos. 239-2452 and 3125-341. Methamidophos.
Submission of a Proposed Reentry Interval in Response
to the Requirements of the Registration Standard for Methamidophos.
Document (PDF) (156 KB PDF).
April 08, 1988. Review. 4 Page(s).
Richard Felthousen. Ecological Effects Branch.
239-2552 Submission of Terrestrial Field
Study Protocol for Review.
Document (PDF) (197 KB PDF).
September 02, 1988. Memorandum. 7 Page(s).
Krystyna Locke. Toxicology Branch.
Methamidophos (Monitor): Review of Lab Audit
Report on Two Studies, Rat Chronic Feeding/Oncogenic
Study and Rat Teratogenic Study.
Tox review 007124.
Document (PDF) (584 KB PDF).
February 06, 1989. Review. 2 Page(s).
Richard Felthousen. Ecological Effects Branch.
Reg. No. 3125-280 Proposed registration on safflower.
Document (PDF) (99 KB PDF).
March 29, 1989. Review. 19 Page(s).
Paul Mastradone. Environmental Fate & Ground Water Branch.
Reg. Nos. 3125-280 & 3125-341. Methamidophos.
Review Laboratory Volatility Study to Support Registration
Standard/Review Data for New Use on Safflower/Review Data
on Revised Report on Confined Rotational Crop Study.
Document (PDF) (983 KB PDF).
April 04, 1989. Memorandum. 4 Page(s).
Richard Lee. Ecological Effects Branch.
Review of Methamidophos for Pilot Program.
Document (PDF) (168 KB PDF).
June 14, 1989. Memorandum. 3 Page(s).
W.T. Chin. Dietary Exposure Branch.
ID# 3125-341: Methamidophos (Monitor) in/on Potatoes.
Response to Registration Standard, Amendment of 7/14/88
(MRID # 407473-1; DEB #4709).
Document (PDF) (194 KB PDF).
August 03, 1989. Memorandum. 16 Page(s).
Krystyna Locke. Toxicology Branch.
EPA ID No. 101201. Evaluation of 3-Month Delayed
Neurotoxicity Study in Hens with SRA 5172
(Methamidophos Technical).
Tox review 007386.
Document (PDF) (1,068 KB PDF).
November 29, 1989. Memorandum. 6 Page(s).
William Woodrow. Registration Support Branch.
EPA Reg. No./ File Symbol 3125-GTG Monitor 480
Concentrate. Acute dermal study and dermal sensitization
study. MRID 410240-01, 02.
Tox Review 008829.
Document (PDF) (344 KB PDF).
December 27, 1989. Memorandum. 3 Page(s).
Jane Smith. Dietary Exposure Branch.
Acephate/Methamidophos. Separation of Tolerances
in Acephate Registration Standard. DEB #5839.
Document (PDF) (157 KB PDF).
May 04, 1990. Memorandum. 51 Page(s).
Krystyna Locke. Toxicology Branch.
EPA ID No. 0034. Technical Methamidophos (Monitor):
Additional Data Submitted by the Registrants..to Clarify
or Upgrade Previously Evaluated Studies.
Pages 29-42, 49-51 removed, registrant data.
Tox review 007891.
Document (PDF) (2,764 KB PDF).
July 12, 1990. Memorandum. 20 Page(s).
Krystyna Locke. Toxicology Branch.
EPA ID No. 3125-341. Evaluation of a Mutagenicity
Study (In Vitro Chromosomal Aberration Assay) with
SRA 5172 (Methamidophos Technical; Monitor).
Pages 11-20 removed, registrant data
Tox review 008027.
Document (PDF) (816 KB PDF).
March 12, 1991. Memorandum. 2 Page(s).
Kenneth Dockter. Chemistry Branch II.
EPA Reg. Nos. 239-2404 or 3125-280. Monitor
[methamidophos] residues found in rac Bok Choy
grown in NJ. No MRID; D161630. CBRS 7695.
Document (PDF) (118 KB PDF).
November 01, 1991. Memorandum. 60 Page(s).
Krystyna Locke. Toxicology Branch.
EPA ID No.:101201. Methamidophos (racemate
and enantiomers) Acute oral studies with rats and hens;
studies related to Guideline NO 81-7; and a review article.
6(A)(2) data. MRID 41685801 thru 41685805. (continued).
Document (PDF) (2,773 KB PDF).
Attachment(s) following:
November 01, 1991. Memorandum.
Kyrstyna Locke. Toxicology Branch.
Pages 10-18, 44, 46, 58 removed, registrant data.
Tox review 008743.
*End of attachments*
November 15, 1991. Memorandum. 64 Page(s).
Krystyna Locke. Toxicology Branch.
EPA ID No.: 101201. Methamidophos: Subchronic
Feeding (Cholinesterase) Study in the Rat and Position
Paper on Establishing a Reference Dose.
Pages 16, 18-29 & 34-64 removed, registration data.
Tox review 008846.
Document (PDF) (1,218 KB PDF).
January 24, 1992. Memorandum. 4 Page(s).
Michael Flood. Chemistry Branch I.
MONITOR 4, EPA Reg. No. 3125-280.
(Mobay Corporation) and MONITOR 4 Spray,
EPA Reg. No. 59639-56, (Valent U.S.A. Corporation).
Impact of Craven Analytical Data on 24(c) Registrations.
Document (PDF) (274 KB PDF).
August 12, 1992. Memorandum. 4 Page(s).
George Ghali. Health Effects Division.
RfD/Peer Review Report of Methamidophos (Monitor).
Document (PDF) (397 KB PDF).
February 24, 1994. Memorandum. 11 Page(s).
Krystyna K. Locke. Toxicology Branch I.
Methamidophos (Monitor): 84-2 Mutagenicity Study
- Gene Mutation in Cultured Chinese Hamster Ovary Cells.
MRID No. 42854701.
Tox Review 010801.
Document (PDF) (603 KB PDF).
March 18, 1995. Memorandum. 50 Page(s).
Krystyna K. Locke. Toxicology Branch I.
Methamidophos (Monitor): 81-8 SS Acute Neurotoxicity
Studies and Related Data MRID Nos. 43025001,
43345801, 42770301. Pages 9-28 removed, registrant data.
Tox review 011470.
Document (PDF) (1,727 KB PDF).
May 02, 1995. Memorandum. 43 Page(s).
Krystyna K. Locke. Toxicology Branch I.
Methamidophos (Monitor): 82-5 B Subchronic Neurotoxicity
Screening Study and Related Data MRIDs 43197901, 42770301.
Pages 16-43 removed, registrant data.
Tox review 011530.
Document (PDF) (1,176 KB PDF).
May 16, 1995. Memorandum. 39 Page(s).
Krystyna K. Locke. Toxicology Branch I.
Methamidophos (SRA 5172; Monitor): 82-4 Subchronic (90-day)
Inhalation Study in the Rat MRIDs 41402401, 41966301.
Pages 17-39 removed, registrant data.
Tox review 011550.
Document (PDF) (1,137 KB PDF).
September 05, 1995. Memorandum. 5 Page(s).
Felicia A. Ford. Chemistry Branch II.
Methamidophos. Confined Field Rotational Crop Study (165-1).
(165-1).. MRID No. 427587-01.
Document (PDF) (235 KB PDF).
November 09, 1995. Memorandum. 2 Page(s).
Jim Carleton. Occupational & Residential Exposure Br.
Review of worker exposure assessment submitted in support
of reregistration on methamidophos. MRID No. 43787201.
Document (PDF) (104 KB PDF).
February 01, 1996. Memorandum. 19 Page(s).
Krystyna K. Locke. Toxicology Branch I.
SRA 5172 (Methamidophos): Review of a 21-Day Dermal
Toxicity Study with Rabbits MRID No. 00147935.
Pages 14-19 removed, registrant data.
Tox review 011779.
Document (PDF) (862 KB PDF).
April 23, 1996. review. 11 Page(s).
Health Effects Division.
New Anticipated Residues on Tomatoes Tolerance
Assessment System Routine Chronic Analysis
Methamidophos (Monitor).
Document (PDF) (779 KB PDF).
October 06, 1997. Memorandum. 5 Page(s).
George Ghali. Health Effects Division.
RfD/Peer Review Report of Methamidophos.
Document (PDF) (264 KB PDF).
February 12, 1998. Memorandum. 22 Page(s).
Jess Rowland. Health Effect Division.
Methamidophos - Report of the Hazard Identification
Assessment Review Committee.
Document (PDF) (1,5253 KB PDF).
February 20, 1998. Memorandum. 6 Page(s).
Krystyna Locke. Toxicology Branch II.
Methamidophos (Monitor) Technical: Additional
Data for the Carcinogenicity Study in Mice
(MRID No. 43248101) and Rats (MRID No. 43248102),
requested by the California EPA.
MRID NOS. 43248101 & 43248102.
Document (PDF) (283 KB PDF).
October 30, 1998. Oneliner. 6 Page(s).
Environmental Fate & Ground Water Branch.
Pesticide Environmental Fate One Line
Summary Methamidophos.
Document (PDF) (219 KB PDF).
October 30, 1998. Memorandum. 36 Page(s).
Felecia Fort. Reregistration Branch 1.
METHAMIDOPHOS. HED Risk Assessment
and Disciplinary Chapters for the Reregistration
Eligibility Decision (RED) Document.
Tox review 012940.
Document (PDF) (2,443 KB PDF).
December 23, 1998. Memorandum. 73 Page(s).
Stephanie Syslo. Environmental Risk Branch II.
METHAMIDOPHOS: Revision of EFED Risk Assessment
for the Reregsitration Eligibility Decision (RED) Document
to Include Registrant's Comments.
Document (PDF) (5,429 KB PDF).
February 14, 2006. Memorandum. 38 Page(s).
Nancy McCarroll. Toxicology Branch.
Methamidophos: Review of Developmental Neurotoxicity Study
in Rats (MRID 45666401). TXR No. 0050923. DP Barcode: D283032.
Document (PDF) (1859 KB PDF).
November 11, 2008. Memorandum. 34 Page(s).
Paul Chin. Reregistration Branch I.
Methamidophos: Revision ofDER (TXR 0054510) for the
Developmental Neurotoxicity Study. MRID No.: 45666401.
DP Barcode: D354692. TXR No.: 0054922.
Document (PDF) (2184 KB PDF).
September 09, 2010. Memorandum. 132 Page(s).
John Liccione. RAB V.
Acephate and Methamidophos: Benchmark Dose Analysis of Acute Oral Studies
and derivation of a Point of Departure and Relative Potency Factor.
DP Barcode: D383706. TXR No.: 0055521. MRID No.: NA.
Document (PDF) (2,958 KB PDF).