• You are here: EPA Home
• Pesticides
• About Pesticides
• Information Sources
• Freedom of Information Act (FOIA)
• Electronic Reading Room


• Science Reviews Previously Released under FOIA
• Cleared Review Indexes - C
• Chlorpyrifos (Pc Code 059101)

Index to Cleared Science Reviews
Chlorpyrifos (Pc Code 059101)

You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more.

Undated. Data Eval. Rec. 7 Page(s).
Curt Lunchick. Exposure Assessment Branch.
Evaluation of Applicator Exposure and Work Environment Impact Following
Treatment of a Greenhouse with Dursban 50W.
Document (PDF) (312 KB PDF).

Udated. Memorandum. 57 Page(s).
David Jaquith. Occupational & Residential Exposure Branch.
DOCUMENTATION OF APPLICATOR EXPOSURE ASSESSMENT FOR
CHLORPYRIFOS REREGISTRATION ELIGIBILITY DOCUMENT -
APPLICATION IN THE RESIDENTIAL ENVIRONMENT.
Document (PDF) (135 KB PDF).

Undated. Memorandum. 8 Page(s).
John Quest. Toxicology Branch.
Attached Data Evaluation Record, Chlorpyrifos: Two-Year Dietary Exposure Studies
in Beagle Dogs. Tox Review 003822 excerpt.
Document (PDF) (461 KB PDF).

November 16, 1972. Letter. 42 Page(s).
William E. Parkin. Toxicology Branch.
Request for residue tolerance for the insecticide Chlorpyrifos... Pesticide
Petition No. 3F1306. Page 1, impurity information. Pages 2 and 3, inert info.
Tox review 000179.
Document (PDF) (2813 KB PDF).

November 16, 1972. Review. 3 Page(s).
Toxicology Branch.
Histopathological examinations were conducted on the tissues of rats...
PP# 3F1306. Accn. No. 00146519. Tox review 000179 (pages 24, 25 & 26).
Document (PDF) (147 KB PDF).

February 15, 1973. Review. 10 Page(s).
R. E. Ney. To: Coordination Branch.
Evaluation of Environmental Data for Chlorpyrifos... (Dursban) - PP. No. 3F1306,
Reg no. 464-ULN, UUA, UUI, UUO, UUT - Dow Chemical Company - Filed October 10, 1972.
Document (PDF) (421 KB PDF).

May 18, 1973. Review. 2 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
Evaluation of Environmental Data for Chlorpyrifos... PP # 3F1370, Dow Chemical Co.
Document (PDF) (86 KB PDF).

September 25, 1973. Review. 5 Page(s).
Franklin Gee. Chemistry Branch.
PP #3F1370. Chlorpyrifos in or on bananas. Evaluation of analytical methods
and residue data. Product impurity information on pages 1,2 is deleted.
Document (PDF) (324 KB PDF).

November 01, 1973. Review. 6 Page(s).
Franklin Gee. Coordination Branch.
Chlorpyrifos in various commodities. Comments on amendments of May 21
and August 3, 1973. Impuritiy information on page 3 not included.
Document (PDF) (424 KB PDF).

March 04, 1974. Review. 1 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
Environmental Chemistry Evaluation of Chlorpyrifos... PP4F1445, 464-LNR
Submitted by Dow Chemical Nov. 14, 1973.
Document (PDF) (44 KB PDF).

March 20, 1974. Review. 1 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
Environmental chemistry review of experimental permit request for use of:
Chlorpyrifos... Reg. No. 464-EXP Dow Chemical Company Ltr. 1/8/74.
Document (PDF) (48 KB PDF).

March 26, 1974. Review. 1 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
Environmental Chemistry Evaluation for Chlorpyrifos [Lorsban, Dursban].
Document (PDF) (31 KB PDF).

May 03, 1974. Memorandum. 12 Page(s).
Alfred Smith. Chemistry Branch.
SUBJECT: PP# 4F1445, Chlorpyrifos in Beans and Corn.
Inert ingredient and manufacturing process information on page 3 is not included.
Document (PDF) (902 KB PDF).

March 07, 1975. Review. 2 Page(s).
William Boodee. Chemistry Branch.
PP #3F1370. Method tryout for the chlorpyrifos metabolite 3,5,6-Trichloro-2-pyridinol
(TCP) in bananas.
Document (PDF) (117 KB PDF).

June 23, 1975. Review. 6 Page(s).
Robert Coberly. Toxicology Branch.
Food Additive Regulation for Chlorpyrifos.
Inert ingredient information on page 4 is not included.
Document (PDF) (265 KB PDF).

July 28, 1975. Memorandum. 8 Page(s).
A. Rathman. Chemistry Branch.
FAP# 5H5080. Chlorpyrifos in Food Handling Establishments. Evaluation of Analytical
Methods and Residue Data. Inert ingredient information on pages 2-4 is not included.
Commercial/financial information on page 3 is not included.
Document (PDF) (850 KB PDF).

August 13, 1975. Review. 4 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
File 464-LRT new registration.
Document (PDF) (205 KB PDF).

October 06, 1975. EEB Review. 2 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
File PP 6F1673 EPA Reg. No. 464-448 Lorsban 4E Registration cotton.
Document (PDF) (84 KB PDF).

November 11, 1975. Memorandum. 2 Page(s).
A. Rathman. Chemistry Branch.
FA# 5H5080. Chlorpyrifos in Food Handling Establishments.
Comments on Amendment of 9/5/75, Including Revised Sections B and F.
Inert ingredient information on page 1 is not included.
Document (PDF) (97 KB PDF).

December 06, 1975. Review. 2 Page(s).
R. W. Cook. Efficacy & Ecological Effects Branch.
Reg. No. 464-448; Petition PP6F1678 Lorsban 4E 'Applicant has amended the label...'.
Document (PDF) (58 KB PDF).

February 05, 1976. EEB Review. 5 Page(s).
Bipin Gandhi. Efficacy & Ecological Effects Branch.
Removal or Rotational crop restrictions.
Document (PDF) (226 KB PDF).

February 05, 1976. Review. 4 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
File 464, 448, 499, 523 Chlorpyrifos Dow Chemical USA Removal of Rotational
crop restrictions.
Document (PDF) (225 KB PDF).

April 01, 1976. Review. 4 Page(s).
Ralph Wright. Efficacy & Ecological Effects Branch.
Killmaster II, New Product.
Document (PDF) (230 KB PDF).

May 20, 1976. Review. 3 Page(s).
Ralph Wright. Efficacy & Ecological Effects Branch.
Killmaster II, New Product.
Document (PDF) (138 KB PDF).

May 25, 1976. Review. 5 Page(s).
Edwin Budd. Toxicology Branch.
Registration Human Safety Review for Killmaster II.
Manufacturing process information on pages 4-5 is not included.
Document (PDF) (877 KB PDF).

August 12, 1976. Memorandum. 3 Page(s).
Edwin Budd. Toxicology Branch.
Application for New Registration, Killmaster II, EPA No. 26693-E.
Document (PDF) (235 KB PDF).

October 12, 1976. Review. 8 Page(s).
Alfred Smith. Chemistry Branch (EEE Branch Review).
Reg. No. 464-448 Petition 6F1830 Midge control on sorghum.
Product impurity infromation on page 3 is not included.
Document (PDF) (636 KB PDF).

October 15, 1976. Memorandum. 3 Page(s).
Edwin Budd. Toxicology Branch.
Killmaster II, EPA File Symbol No. 26693-E. Application for New Registration.
Review of Data Submitted on 10/12/76 (Resubmission).
Document (PDF) (202 KB PDF).

March 14, 1977. Review. 10 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
File 464-EUP-51 Lorsban 4E, Dursban EUP (Tank Mix) Lorsban 4E with
methylparathion and/or toxaphene for testing on cotton.
Document (PDF) (871 KB PDF).

April 21, 1977. Review. 3 Page(s).
Ralph Wright. Efficacy & Ecological Effects Branch.
Killmaster II 12-Month Residual Claim - New Pests.
Document (PDF) (334 KB PDF).

June 07, 1977. Memorandum. 12 Page(s).
S. L. Chan. Toxicology Branch.
Petition for the Establishment of a tolerance of 0.10 ppm on Chlorpyrifos
in/on Sweet-potatoes. Petition No. 6F1786. Inert ingredient information on
pages 2-3 is not included.
Document (PDF) (471 KB PDF).

June 07, 1977. Review. 5 Page(s).
S. L. Chan. Toxicology Branch.
Petition for the establishment of a tolerance of 0.75 ppm in/on Sorghum grain
and 1.50 ppm in/on Sorghum forage and fodder. Petition No. 6F1830.
Document (PDF) (193 KB PDF).

September 27, 1977. Review. 8 Page(s).
Ronald Ney, et. al. Efficacy & Ecological Effects Branch.
Reg. No. 464-448 PP 6F1786 Lorsban new use on sweet potatoes.
Document (PDF) (442 KB PDF).

September 29, 1977. Review. 2 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
Reg. No. 464-448, 449 and 523 Explanation letter of phytotoxicity question from Efficacy.
Document (PDF) (72 KB PDF).

October 17, 1977. Review. 8 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
Reg. No. 464-448 New use on sweet potatoes.
Document (PDF) (466 KB PDF).

November 01, 1977. Review. 7 Page(s).
Ronald Ney. Efficacy & Ecological Effects Branch.
Reg. No. 464-449, 523 New use - field corn and sugarbeets.
Document (PDF) (450 KB PDF).

November 11, 1977. Review. 2 Page(s).
Ralph Wright. Efficacy & Ecological Effects Branch.
Killmaster II Food Additive Tolerance.
Inert ingredient information on page 2 is not included.
Document (PDF) (216 KB PDF).

July 07, 1978. Review. 2 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Reg. No. 464-449, 523 use on sugarbeets - resubmission.
Document (PDF) (95 KB PDF).

July 26, 1978. Review. 6 Page(s).
Gunter Zweig. Environmantal Fate Branch.
Reg. No. 464-448 PP No. 6F1830, 6F1777 *resubmission of amended
registration application - sorghum (6F1830) Accession No. 096642.
Document (PDF) (355 KB PDF).

August 03, 1978. Review. 2 Page(s).
Ralph Wright. Insecticide-Rodenticide Branch.
Efficacy Review of Nozzle Clogging and Tank Cleaning Data.
Document (PDF) (82 KB PDF).

August 11, 1978. Memorandum. 3 Page(s).
H. W. Spencer. Toxicology Branch.
Amended registration of EPA No. 7001-148, Dursban Insect Spray;
Caswell No. 219AA. Tox Review No. 000208.
Document (PDF) (197 KB PDF).

August 15, 1978. Memorandum. 2 Page(s).
Roland Gessert. Toxicology Branch.
Toxicity of Dog and Cat Flea Collars on Exposed Animals and Humans;
Inquiry from Florida Student.
Document (PDF) (104 KB PDF).

September 01, 1978. Letter. 7 Page(s).
Albin B. Kocialski. Toxicology Branch.
The toxicology data found here is basically a presentation of previously
summarized data on Dursban..... Tox review 000191.
Document (PDF) (546 KB PDF).

September 25, 1978. Review. 1 Page(s).
Alfred Smith. Residue Chemistry Branch.
PP# 6F1830: Chlorpyrifos on Sorghum. Amendment of 5/31/78.
Document (PDF) (99 KB PDF).

October 31, 1978. Memorandum. 2 Page(s).
Chan S-L. Toxicology Branch.
Petition No 8E-2092, for a tolerance of 0.5 ppm of Chlorpyrifos to be established
in/on Tomatoes. Inert ingredient information on page 1 is not included.
Document (PDF) (122 KB PDF).

November 13, 1978. Memorandum. 4 Page(s).
Alfred Smith. Residue Chemistry Branch.
PP#8E2092: Chlorpyrifos in Tomatoes. Evaluation of Analytical Method
and Residue Data. Product impurity information on page 2 not included.
Document (PDF) (417 KB PDF).

March 23, 1979. Review. 2 Page(s).
Alfred Smith. Residue Chemistry Branch.
PP# 6F1830 FAP# 9H5203: Chlorpyrifos in Sorghum and milling fractions.
Amendment of 12/1/78.
Document (PDF) (117 KB PDF).

June 12, 1979. FR Notice. 16 Page(s).
Edwin Johnson. Office of Pesticide Programs.
Title 40--Protection of the Environment Chlorpyrifos PP 6F1830/R207 Final Rule.
Document (PDF) (1294 KB PDF).

January 21, 1980. Review. 5 Page(s).
Gunter Zweig. Environmantal Fate Branch.
Reg./File No.: 464-LLE, Lorsban 50W Wettable Powder...
464-448; 464-523; 464-547 Conditional uses.
Document (PDF) (188 KB PDF).

March 25, 1980. Review. 2 Page(s).
Gunter Zweig. Environmantal Fate Branch.
Reg./File No. 464-448; 464-523 Added use on tobacco. Incremental risk.
Document (PDF) (53 KB PDF).

April 29, 1980. Memorandum. 10 Page(s).
Elizabeth Loevey. Residue Chemistry Branch.
PP# 9F2270 Chlorpyrifos in or on Soybeans. Evaluation of Residue Data and
Analytical Methods. Product impurity information on page 3 is not included.
Document (PDF) (871 KB PDF).

May 05, 1980. Review. 2 Page(s).
Joseph Reinert. Environmental Fate Branch.
Reg. No. 464-448 464-523 Add use of Lorsban on tobacco.
Document (PDF) (108 KB PDF).

May 16, 1980. Memorandum. 3 Page(s).
William Dykstra. Toxicology Branch.
EPA Reg. #464-449, -449, -343, -360, Results of a Two-Year Toxicity and Oncogenic
Study of Chlorpyrifos Administered to CD-Mice in the Diet. Acc.# 242059.
Tox review 000196.
Document (PDF) (321 KB PDF).

September 10, 1980. Review. 2 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No. 464-448, 464-523 'The registrant is requesting amended registrations...
for control of root maggots...'.
Document (PDF) (110 KB PDF).

December 23, 1980. Memorandum. 5 Page(s).
Elizabeth Loevey. Residue Chemistry Branch.
PP#9F2270. Chlorpyrifos in or on Soybeans. Amendment of 10/14/80.
Document (PDF) (1896 KB PDF).

January 15, 1981. Memorandum. 2 Page(s).
Byron Backus. Insecticide Rodenticide Branch.
EPA File Symbol: 464-LAE Dursban TC Termiticide Concentrate Caswell #219AA.
Document (PDF) (134 KB PDF).

January 15, 1981. Review. 7 Page(s).
Lynn Bradley. Residue Chemistry Branch.
PP#1G2438 FAP#1H5284. Chlorpyrifos on wheat.
Evaluation of analytical methods and residue data.
Document (PDF) (581 KB PDF).

February 17, 1981. Letter. 2 Page(s).
Jay Ellenberger. Insecticide-Rodenticide Branch.
Pesticide Petition 9F2270 EPA Registration Nos. 464-448 and 464-523 Chlorpyrifos
in/on Soybeans Your Submission of October 14, 1980 Letter to Bob Bischoff,
The Dow Chemical Company.
Document (PDF) (248 KB PDF).

March 06, 1981. Memorandum. 4 Page(s).
William Dykstra. Toxicology Branch.
EPA Reg. # 464-EUP-RV; PP#1G2438; Chlorpyrifos in or on Wheat.
Accession 099714, 099715.
Document (PDF) (213 KB PDF).

April 06, 1981. Review. 3 Page(s).
Lynn B. Bradley. Residue Chemistry Branch.
PP#1G2438 and FAP#1H5284. Chlorpyrifos on Wheat. Amendment of 3/25/81.
Document (PDF) (414 KB PDF).

April 24, 1981. Review. 2 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No. 464-448 use on tomatoes.
Document (PDF) (81 KB PDF).

May 18, 1981. Memorandum. 1 Page(s).
Jay Ellenberger. Insecticide-Rodenticide Branch.
Pesticide Petition 1G2438 Food Additive Petition 1H5284 Chlorpyrifos
for use in/on Wheat Your submission of March 23, 1981.
Document (PDF) (67 KB PDF).

June 12, 1981. Memorandum. 3 Page(s).
Lynn Bradley. Residue Chemistry Branch.
464-EUP-AI. Chlorpyrifos on lemons and oranges.
Document (PDF) (247 KB PDF).

June 24, 1981. Memorandum. 5 Page(s).
Elizabeth Loevey. Residue Chemistry Branch.
PP# 9F2270 Chlorpyrifos in or on soybeans Amendments of March 30, 1981 and May 4, 1981.
Document (PDF) (843 KB PDF).

June 29, 1981. Review. 2 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No. 464-523 Crop rotation protocol.
Document (PDF) (85 KB PDF).

July 06, 1981. Review. 8 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448, 464-523 Review of chlorpyrifos soil studies
Pages 4-8 removed, registrant data. Acc 241547.
Document (PDF) (184 KB PDF).

July 28, 1981. Memorandum. 4 Page(s).
Lynn Bradley. Residue Chemistry Branch.
81-OH-6. Section 18 exemption for chlorpyrifos on soybeans in Ohio.
Document (PDF) (267 KB PDF).

August 28, 1981. Memorandum. 4 Page(s).
B. T. Backus. Insecticide Rodenticide Branch.
EPA File Symbol 464-LTR. Dursban XP-4 Insecticide. Caswell #219AA.
Document (PDF) (239 KB PDF).

October 30, 1981. Review. 2 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448 Add alfalfa to label.
Document (PDF) (87 KB PDF).

November 06, 1981. Memorandum. 7 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#0E2529. Chlorpyrifos on cherries. Evaluation of analytical method
and residue data. Inert ingredient information on page 2 not included.
Document (PDF) (566 KB PDF).

December 02, 1981. Memorandum. 5 Page(s).
William Dykstra. Toxicology Branch.
EPA Reg. # 464-448; 464-523; PP#2F2588; 2H5326; Chlorpyrifos in/on Sunflowers
Accession # 070408.
Document (PDF) (264 KB PDF).

December 02, 1981. Review. 9 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448, 464-523 Add soybeans to label.
Document (PDF) (417 KB PDF).

December 07, 1981. Review. 6 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448, 464-523 Adding sunflowers to labels.
Document (PDF) (873 KB PDF).

December 18, 1981. Memorandum. 3 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#9F2270. Chlorpyrifos on soybeans. Amendment of 10/22/81.
Document (PDF) (150 KB PDF).

January 13, 1982. Review. 6 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448 Protocol - field monitoring study
Pages 3-6 removed, registrant data.
Document (PDF) (144 KB PDF).

January 29, 1982. Memorandum. 10 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#2E2584/1H5323. Chlorpyrifos on corn forage and fodder. Evaluation of analytical
method and residue data. Inert ingredient information on page 2 is not included.
Document (PDF) (1209 KB PDF).

February 19, 1982. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
PP#9G2168. Chlorpyrifos on lemons and oranges.
Document (PDF) (161 KB PDF).

February 22, 1982. Memorandum. 4 Page(s).
William Dykstra. Toxicology Branch.
EPA Reg. # 464-LLE; PP#2F2560, 2H5331; Chlorpyrifos in/on Apples
Accession # 070576.
Document (PDF) (257 KB PDF).

March 04, 1982. Memorandum. 10 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#1F2575/1H5322 Chlorpyrifos on citrus. Evaluation of analytical method
and residue data. Inert ingredient information on page 3 is not included.
Document (PDF) (1087 KB PDF).

March 05, 1982. Memorandum. 8 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#2F2588/2H5326. Chlorpyrifos on sunflowers. Evaluation of analytical method
and residue data. Inert ingredient information on page 2 is not included.
Document (PDF) (857 KB PDF).

March 11, 1982. Memorandum. 1 Page(s).
Linda Propst. Residue Chemistry Branch.
PP#1G2438 and FAP#1H5284. Chlorpyrifos on wheat. Amended EUP.
Document (PDF) (74 KB PDF).

March 16, 1982. Review. 5 Page(s).
William Dykstra. Toxicology Branch.
Petition No. 1E2529 RAC(s) - tolerances: 2.0 ppm in/on cherries.
Document (PDF) (275 KB PDF).

March 24, 1982. Memorandum. 9 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#1F2620/2H5331 Chlorpyrifos on apples. Evaluation of analytical method
and residue data. Inert ingredient information on page 3 is not included.
Document (PDF) (997 KB PDF).

March 25, 1982. Memorandum. 9 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#2E2584. Chlorpyrifos on grapes. Evaluation of analytical method
and residue data. Inert ingredient information on page 3 is not included.
Document (PDF) (944 KB PDF).

March 29, 1982. Memorandum. 1 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#2F2588/2H5326 Chlorpyrifos on sunflowers Amendment of 3/19/82.
Document (PDF) (62 KB PDF).

April 09, 1982. Memorandum. 2 Page(s).
Karl Arne. Residue Chemistry Branch.
Memo of conference 3/25/82. PP1F2575 Chlorpyrifos on Citrus.
Document (PDF) (155 KB PDF).

May 03, 1982. Memorandum. 2 Page(s).
Karl Arne. Residue Chemistry Branch.
PP#1F2575/FAP#1H5322 Chlorpyrifos on citrus. Amendment of 3/29/82.
Document (PDF) (208 KB PDF).

May 03, 1982. Review. 11 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448. Review of runoff protocol.
Pages 3-11 removed, registration data.
Document (PDF) (111 KB PDF).

May 13, 1982. Review. 17 Page(s).
Willa Garner. Environmental Fate Branch.
Use pattern for EEC Calculations: Soybeans and alfalfa.
Document (PDF) (868 KB PDF).

May 25, 1982. Memorandum. 2 Page(s).
Andrew Rathman. Residue Chemistry Branch.
EPA Reg. Nos. 464-EUP-TA and 464-EUP-TL. Chlorpyrifos on cotton.
Inert info on pages 1, 2 is not included.
Document (PDF) (190 KB PDF).

June 03, 1982. Review. 6 Page(s).
M. Nelson. Residue Chemistry Analysis Branch.
Petitioner: IR-4 and Ag. Exp. Stn of CA Petition No: 2E2668 figs @ 0.1 ppm.
Document (PDF) (630 KB PDF).

June 22, 1982. Review. 4 Page(s).
Willa Garner. Environmental Fate Branch.
Reg./File No 2E2682; Use in cranberries.
Document (PDF) (144 KB PDF).

July 06, 1982. Memorandum. 3 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#1F2620/FAP2H5331: Chlorpyrifos on apples. Amendment dated 12-11-81.
Document (PDF) (328 KB PDF).

July 07, 1982. Review. 3 Page(s).
Samuel Creeger. Environmental Fate Branch.
Reg./File No 464-448. Add new use - sugar beets.
Document (PDF) (136 KB PDF).

July 08, 1982. Memorandum. 7 Page(s).
R. W. Storherr. Residue Chemistry Branch.
PP#2E2644. Chlorpyrifos in or on Asparagus.
Document (PDF) (734 KB PDF).

July 15, 1982. Review. 6 Page(s).
Jesse E. Mayes. Residue Chemistry Branch.
Petitioner: IR-4 and Ag Exp Station of MA, NJ & WA Petition No: 2E2682
Cranberries @ 1 ppm.
Document (PDF) (730 KB PDF).

August 01, 1982. Report. 79 Page(s).
Committee on Toxicology. National Research Council.
An Assessment of the Health Risks of Seven Pesticides Used for
Termite Control (copy located in chlordane file). Tox review 004831.
Document (PDF) (5887 KB PDF).

August 02, 1982. Memorandum. 4 Page(s).
Edward Zager. Residue Chemistry Branch.
EPA Registration No. 464-448. Chlorpyrifos on Corn.
Document (PDF) (367 KB PDF).

October 06, 1982. Memorandum. 3 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#1F2620/2H5331. Chlorpyrifos on apples. Amendment of 8/11/82.
Document (PDF) (317 KB PDF).

October 29, 1982. Memorandum. 2 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#2E2644 Chlorpyrifos on asparagus. Amendment of 9/15/82.
Document (PDF) (229 KB PDF).

November 15, 1982. Memorandum. 5 Page(s).
B. T. Backus. Insecticide Rodenticide Branch.
EPA File Symbol 2724-EOO, Zoecon Collar RF-160 for Cats.
Inert info on page 4 not included. Tox review 002282.
Document (PDF) (326 KB PDF).
Attachment(s) Following:

June 14, 1982. Memorandum.
B. T. Backus. Insecticide Rodenticide Branch.
EPA File Symbol 2724-EOO, Zoecon Collar RF-160 for Cats.

*End of Attachments*

November 19, 1982. Memorandum. 3 Page(s).
Edward Zager. Residue Chemistry Branch.
EPA Registration No. 464-448. Chlorpyrifos on Corn, Sprinkler Irrigation applications.
Document (PDF) (306 KB PDF).

November 22, 1982. Memorandum. 4 Page(s).
Edward Zager. Residue Chemistry Branch.
EPA Registration No. 464-448. Chlorpyrifos on corn.
Document (PDF) (454 KB PDF).

December 03, 1982. Memorandum. 3 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#1F2620/2H5331 Chlorpyrifos on apples. Amendment of 10/19/82.
Document (PDF) (319 KB PDF).

December 03, 1982. Memorandum. 4 Page(s).
Peter Gray. Residue Chemistry Branch.
PP#3E2766: Chlorpyrifos on kiwi fruit. Evaluation of analytical method
and residue data. Inert ingredient information on pages 1, 2 is not included.
Document (PDF) (619 KB PDF).

December 15, 1982. Memorandum. 3 Page(s).
Edward Zager. Residue Chemistry Branch.
EPA Reg. Nos. 464-448 and 464-532. Chlorpyrifos on sorghum.
Document (PDF) (404 KB PDF).

January 04, 1983. Memorandum. 8 Page(s).
Jesse E. Mayes. Residue Chemistry Branch.
PP#F2684/2H5352 and Amendment of July 9, 1982. Chlorpyrifos in or on sugar beets.
Evaluation of residue data and analytical methodology.
Document (PDF) (3176 KB PDF).

January 07, 1983. Memorandum. 2 Page(s).
B. T. Backus. Insecticide Rodenticide Branch.
EPA Reg. No. 26693-2 Killmaster II, Caswell #219AA.
Document (PDF) (108 KB PDF).

January 11, 1983. Review. 7 Page(s).
Emil Regelman. Environmental Fate Branch.
Label amendment, new use on almonds and walnuts, conditional registration,
also minor formulation change. Reg./File No 464-LLE.
Document (PDF) (359 KB PDF).

February 02, 1983. Review. 3 Page(s).
Emil Regelman. Environmental Fate Branch.
Application for registration of new use on grapes. Reg./File No 464-448.
Document (PDF) (108 KB PDF).

February 18, 1983. Review. 2 Page(s).
Joseph Reinert. Exposure Assessment Branch.
Reg./File No 464-562. Add plenum houses to label.
Document (PDF) (99 KB PDF).

March 02, 1983. Memorandum. 2 Page(s).
Edward Zager. Residue Chemistry Branch.
EPA Reg. Nos. 464-448 and 464-532. Chlorpyrifos on Tobacco.
Document (PDF) (140 KB PDF).

April 01, 1983. Memorandum. 5 Page(s).
Orville Paynter. Toxicology Branch.
PP#3E2819: Petition for the Establishment of Additional Chlorpyrifos
Tolerances on Brassica Leafy Vegetables.
Document (PDF) (254 KB PDF).

April 04, 1983. Memorandum. 2 Page(s).
Andrew Rathman. Residue Chemistry Branch.
Dursban (Chlorpyrifos) protocol for use in food handling establishments.
Document (PDF) (172 KB PDF).

April 13, 1983. Memorandum. 3 Page(s).
A. R. Rathman. Residue Chemistry Branch.
EPA Registration No. 464-448. Amended registration for chlorpyrifos on citrus.
Document (PDF) (276 KB PDF).

May 02, 1983. Memorandum. 2 Page(s).
Andrew Rathman. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended registration for chlorpyrifos on corn.
Document (PDF) (213 KB PDF).

May 04, 1983. Review. 2 Page(s).
Richard Moraski. Exposure Assessment Branch.
Reg./File No 464-448. Label Amendment - Use on grapes.
Document (PDF) (93 KB PDF).

May 17, 1983. Review. 4 Page(s).
Richard Moraski. Exposure Assessment Branch.
Label Amendment: Cherries, Figs and Cranberries. Reg./File No 464-448.
Document (PDF) (228 KB PDF).

June 08, 1983. Memorandum. 8 Page(s).
Jesse E. Mayes. Residue Chemistry Branch.
PP#3E2819. Chlorpyrifos in or on the crop group brassica leafy vegetables.
Evaluation of residue data and analytical methodology.
Document (PDF) (850 KB PDF).

July 06, 1983. Memorandum. 2 Page(s).
Edward Zager. Residue Chemistry Branch.
TX 830005. Section 24(c) registration for the use of chlorpyrifos
on grain sorghum in Texas.
Document (PDF) (177 KB PDF).

July 07, 1983. Memorandum. 2 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#3E2766: Chlorpyrifos on Kiwifruit. Amendments of 4/4/83 and 3/8/83.
Inert ingredient information on page 1 is not included.
Document (PDF) (120 KB PDF).

July 14, 1983. Memorandum. 2 Page(s).
Karl Arne. Residue Chemistry Branch.
PP#2E2644 Chlorpyrifos on asparagus. Amendment of 3/22/83.
Document (PDF) (167 KB PDF).

July 22, 1983. Memorandum. 8 Page(s).
R. W. Cook. Chemistry Branch.
PP3E2872/FAP3H5393: Chlorpyrifos in or on Grapes.
Evaluation of analytical methods and residue data.
Document (PDF) (894 KB PDF).

August 12, 1983. Memorandum. 3 Page(s).
Linda Propst. Residue Chemistry Branch.
Reg. No. 602-GNU. Chlorpyrifos on beef cattle, hogs, goats, horses and sheep.
Document (PDF) (366 KB PDF).

August 24, 1983. Review. 6 Page(s).
K. Arne. Residue Chemistry Branch.
3E2886. Petition review for chlorpyrifos on mushrooms.
Document (PDF) (3255 KB PDF).

September 02, 1983. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
Reg. Nos. 464-448 and 464-523. Chlorpyrifos on onions (dry bulb).
Document (PDF) (225 KB PDF).

September 08, 1983. Memorandum. 32 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#3F2884/3H5396 Chlorpyrifos on several crops. A proposal to revise the
established chlorpyrifos tolerances to separately specify the level of
chlorpyrifos, per se.
Document (PDF) (3849 KB PDF).

September 19, 1983. Memorandum. 1 Page(s).
Karl H. Arne. Residue Chemistry Branch.
PP#2E2644. Chlorpyrifos on asparagus. Amendment of 1/20/83.
Document (PDF) (112 KB PDF).

September 20, 1983. Review. 10 Page(s).
Richard Moraski. Exposure Assessment Branch.
Reg./File No 464-562. Additional use in Plenum Houses.
Document (PDF) (841 KB PDF).

September 29, 1983. Memorandum. 2 Page(s).
Karl Arne. Residue Chemistry Branch.
3E2886 Chlorpyrifos on mushrooms. Amendment of 8/26/83.
Document (PDF) (171 KB PDF).

October 25, 1983. Review. 2 Page(s).
Richard Moraski. Exposure Assessment Branch.
Reg./File No 464-448. Label Amendment - Add use on wheat.
Document (PDF) (95 KB PDF).

October 28, 1983. Memorandum. 2 Page(s).
Jesse E. Mayes. Residue Chemistry Branch.
PP#3E2819. Chlorpyrifos in or on the crop group brassica leafy vegetables.
Amendment of 7/13/83.
Document (PDF) (207 KB PDF).

November 07, 1983. Memorandum. 3 Page(s).
K. H. Arne. Residue Chemistry Branch.
PP#3F2884 Chlorpyrisfos on several commodities. A request by the petitioner to base
the ADI on expected residues rather than tolerance levels for certain commodities.
Document (PDF) (380 KB PDF).

November 18, 1983. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended regsitrations for chlorpyrifos on alfalfa.
Document (PDF) (342 KB PDF).

November 21, 1983. Memorandum. 7 Page(s).
Karl Arne. Residue Chemistry Branch.
FAP#1H5295 Chlorpyrifos on tomatoes. Amendment of 8/31/83.
Document (PDF) (1017 KB PDF).

December 06, 1983. Memorandum. 2 Page(s).
B. T. Backus. Insecticide Rodenticide Branch.
EPA Reg. No. 26693-2 Killmaster II, Caswell #219AA.
Document (PDF) (107 KB PDF).

December 06, 1983. Memorandum. 3 Page(s).
Linda Propst. Residue Chemistry Branch.
Reg. No. 602-GNU. Chlorpyrifos for direct animal and premise use.
Inert info on page 2 is not included.
Document (PDF) (564 KB PDF).

December 08, 1983. Review. 4 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Data to support label amendment: use in plenum houses. EPA Reg. No. 464-562.
Document (PDF) (217 KB PDF).

January 09, 1984. Review. 12 Page(s).
Carolyn Offutt. Exposure Assessment Branch.
Reg./File No 464-448. EEC on wheat.
Document (PDF) (557 KB PDF).

January 20, 1984. Memorandum. 8 Page(s).
V. Frank Boyd. Residue Chemistry Branch.
PP3F2947/FAP#3H5411: Chlorpyrifos in or on Wheat.
Evaluation of analytical method and residue data. Acc. no. 071865.
Inert ingredient information on pages 2, 3 is not included.
Document (PDF) (1692 KB PDF).

January 24, 1984. Memorandum. 6 Page(s).
Karl Arne. Residue Chemistry Branch.
PP#3F2884/FAP#3H5396: Chlorpyrifos on several commodities.
Ammendment of 12-15-83.
Document (PDF) (2178 KB PDF).

January 31, 1984. Review. 11 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-448 and 464-552 ad use on filberts and pecans.
Document (PDF) (1686 KB PDF).

February 02, 1984. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended registration to permit use of chlorpyrifos plus
non-emulsifiable oil through overhead sprinkler irrigation systems on various raw
agricultural commodities.
Document (PDF) (384 KB PDF).

February 02, 1984. Review. 18 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Review data submitted to satisfy soil photolysis.
Pages 7-18 removed, registration data.
Document (PDF) (451 KB PDF).

February 06, 1984. Memorandum. 3 Page(s).
R. W. Cook. Chemistry Branch.
PP3F2872/FAP3H5393: Chlorpyrifos in or on Grapes.
Amendment of 10/17/83. Acc. No. 072086.
Document (PDF) (435 KB PDF).

February 14, 1984. Memorandum. 3 Page(s).
Linda Propst. Residue Chemistry Branch.
EPA Reg. No. 464-448. Chlorpyrifos on cotton. Amended registration
to allow for tank mix combinations with or without certain pyrethroid
insecticides plus vegetable oil.
Document (PDF) (588 KB PDF).

March 06, 1984. Memorandum. 3 Page(s).
Charles Trichilo. Residue Chemistry Branch.
No Accession Number. FAP1H5295/PP4F3008: Chlorpyrifos in or on Tomatoes,
Tomato Pomace, and Meat and Milk. Review of new PP 4F3008 and the amendment
of 12/16/83 to FAP 1H5295.
Document (PDF) (164 KB PDF).

March 13, 1984. Memorandum. 2 Page(s).
Richard Loranger. Residue Chemistry Branch.
EPA Reg. No. 464-448. Protocols for chlorpyrifos studies on corn and alfalfa.
Document (PDF) (433 KB PDF).

March 19, 1984. Memorandum. 1 Page(s).
Karl Arne. Residue Chemistry Branch.
FAP#1H5295: Chlorpyrifos on tomatoes. Amendment of 1/30/84.
Document (PDF) (227 KB PDF).

April 03, 1984. Memorandum. 3 Page(s).
Jesse E. Mayes. Residue Chemistry Branch.
PP#3E2819. (No Accession number). Chlorpyrifos in or on the crop brassica
leafy vegetables. Amendment of 2/1/84.
Document (PDF) (803 KB PDF).

April 16, 1984. Review. 7 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-448 and -523. Add use in citrus orchards.
Document (PDF) (561 KB PDF).

April 17, 1984. Review. 4 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-448. Add use on asparagus.
Document (PDF) (670 KB PDF).

April 24, 1984. Data Eval. Rec.. 12 Page(s).
John Quest. Toxicology Branch.
Chlorpyrifos (Dowco 179) 2-Year Chronic Toxicity Oncogenicity Feeding Study - Rats.
MRID 00081270 Tox review 003822 (Pages 44-55).
Document (PDF) (878 KB PDF).

April 24, 1984. Memorandum. 8 Page(s).
Linda Kutney. Residue Chemistry Branch.
PP#4F3062. Chlorpyrifos on Stone Fruit. Evaluation of analytical data
and residue data. (Accession No. 072408).
Document (PDF) (541 KB PDF).

May 11, 1984. Memorandum. 3 Page(s).
Lynn Bradley. Residue Chemistry Branch.
Reg. Nos. 464-448, -523. Chlorpyrifos on citrus orchard floors.
(Accession Nos. 252500 and 252499).
Document (PDF) (1432 KB PDF).

May 11, 1984. Memorandum. 4 Page(s).
Lynn M. Bradley. Residue Chemistry Branch.
Reg. No. 602-GNU. Chlorpyrifos as dermal treatment for hogs and horses.
Reg. No. 602-304. Protocol for residue data for chlorpyrifos as dip for hogs.
Inert ingredient info pages 1,2,3 is not included.
Document (PDF) (2209 KB PDF).

May 15, 1984. Review. 5 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-552. Add stone fruit to label.
Document (PDF) (579 KB PDF).

May 18, 1984. Memorandum. 1 Page(s).
William Burnam. Toxicology Branch.
Chlorpyrifos Mouse Oncogenicity Study.
Document (PDF) (71 KB PDF).

May 18, 1984. Memorandum. 3 Page(s).
Gary Burin. Toxicology Branch.
Review of Human Cholinesterase Study (pages 23-25 of Tox review 003822).
Document (PDF) (341 KB PDF).

May 18, 1984. Memorandum. 5 Page(s).
Gary Burin. Toxicology Branch.
Chlorpyrifos Cholinesterase Studies in the Rat and in Man.
(pages 31-35 of Tox review 003822).
Document (PDF) (587 KB PDF).

May 23, 1984. Memorandum. 91 Page(s).
William Burnam. Toxicology Branch.
Chlorpyrifos Registration Standard Tox review 003822.
Document (PDF) (8362 KB PDF).

June 11, 1984. Memorandum. 2 Page(s).
Kenneth Dockter. Residue Chemistry Branch.
464-EUP-64. Chlorpyrifos on wheat. Revision of EUP program.
Document (PDF) (454 KB PDF).

June 18, 1984. Review. 4 Page(s).
Gary Burin. Toxicology Branch.
Pesticide Petition No(s): 4F3008 1H5295 RAC(s) - tolerance(s): Tomatoes, 1.5 ppm
total. 1.0 ppm chlorpyrifos per se, also establish related milk & meat tolerances...
Document (PDF) (242 KB PDF).

July 03, 1984. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended registration for chlorpyrifos on alfalfa.
Document (PDF) (575 KB PDF).

July 03, 1984. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
EPA Reg. Nos. 464-448 and 464-523. Chlorpyrifos on onions.
Accession Nos. 072613 and 072597.
Document (PDF) (366 KB PDF).

August 06, 1984. Review. 6 Page(s).
Joseph Reinert. Exposure Assessment Branch.
Review protocol for indoor air monitoring.
Document (PDF) (391 KB PDF).

August 16, 1984. Memorandum. 3 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended registration of chlorpyrifos (Lorsban 4E) on citrus.
Accession No. 253677.
Document (PDF) (635 KB PDF).

August 29, 1984. Review. 2 Page(s).
Norman J. Cook. Ecological Effects Branch.
Review modeling the runoff and behavior of chlorpyrifos
in a terrestrial-aquatic watershed.
Document (PDF) (123 KB PDF).

September 06, 1984. Review. 6 Page(s).
Joseph C. Reinert. Exposure Assessment Branch.
Reg./File No 464-590. Applicator exposure study greenhouse use.
Document (PDF) (518 KB PDF).

September 11, 1984. Review. 23 Page(s).
Carolyn Offutt. Exposure Assessment Branch.
Reg./File No 464-448, 464-523. Runoff study review.
Pages 8-11, 13, 15-18, 20-21 removed, registration data.
Document (PDF) (898 KB PDF).

September 19, 1984. Memorandum. 3 Page(s).
Michele Loftus. Residue Chemistry Branch.
84-CA-37. Proposed Section 18 specific exemption to use chlorpyrifos,
trade name: Lorsban 4E, on avocado orchard floors to control Argentine ants.
Document (PDF) (1249 KB PDF).

October 01, 1984. Review. 2 Page(s).
Carolyn Offutt. Exposure Assessment Branch.
EEC Review of Runoff and Water Quality. Reg./File No 464-448 & 464-523.
Document (PDF) (129 KB PDF).

October 01, 1984. Review. 4 Page(s).
Carolyn Offutt. Exposure Assessment Branch.
EEC Review of runoff and water quality. Reg./File No 464-448 & 464-523.
Document (PDF) (237 KB PDF).

November 15, 1984. Review. 16 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Review soil photolysis study in support of previous request for use on various crops.
Pages 5-16 removed, registration data. Acc. # 254395.
Document (PDF) (316 KB PDF).

December 27, 1984. Memorandum. 1 Page(s).
Frank Boyd. Residue Chemistry Branch.
PP#4F2999. Chlorpyrifos in or on Tree Nuts. Amendment of 12/13/84.
Accession No.: None.
Document (PDF) (260 KB PDF).

January 09, 1985. Memorandum. 4 Page(s).
Leung Cheng. Residue Chemistry Branch.
EPA Reg No 464-448. Chlorpyrifos on Tobacco: Amended Registration.
Accession Numbers 255341 and 255342.
Document (PDF) (2101 KB PDF).

January 26, 1985. Review. 4 Page(s).
Joseph Reinert. Exposure Assessment Branch.
Reg. No.: 49244-1 and 49244-2. Exposure Data.
Document (PDF) (278 KB PDF).

January 31, 1985. Memorandum. 2 Page(s).
Allan Reiter. Residue Chemistry Branch.
PP#3F2884 & 3F2778. Review of Label for Chlorpyrifos
(Lorsban 1% Bait) on corn, sugar beets and almonds. [RCB No. 435]
Inert ingredient information page 1 not included.
Document (PDF) (840 KB PDF).

February 21, 1985. Memorandum. 2 Page(s).
Lynn M. Bradley. Residue Chemistry Branch.
Chlorpyrifos Metabolism Study--Protocol for Dermal Application to Sheep.
No Accession Number. RCB # 581.
Document (PDF) (450 KB PDF).

March 08, 1985. Memorandum. 2 Page(s).
Kenneth Dockter. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended registration of chlorpyrifos (Lorsban 4E) for use
(in tank mix w/spray oil) on citrus. Letter of Dec. 4, 1984 (no accession number)
[RCB No. 514].
Document (PDF) (534 KB PDF).

March 11, 1985. Review. 6 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-358. Response to prev. review.
Pages 5,6 removed, registration data. Acc. # 254395.
Document (PDF) (210 KB PDF).

March 20, 1985. Review. 4 Page(s).
Joseph Reinert. Exposure Assessment Branch.
Reg./File 464-562. Review of Indoor Air Monitoring Protocol.
Document (PDF) (222 KB PDF).

March 25, 1985. Memorandum. 15 Page(s).
Richard Loranger. Residue Chemistry Branch.
Chlorpyrifos registration standard. Dow's response to residue chemistry data gaps.
Accession Number 256045. [RCB No. 501].
Document (PDF) (4578 KB PDF).

April 15, 1985. Memorandum. 11 Page(s).
Sami Malak. Residue Chemistry Branch.
85-MT-04105. Section 18 emegency exemption for the use of chlorpyrifos or
permethrin on small grains. RCB #'s 705, 706. Accession #'s 146164 and 146165.
Document (PDF) (3091 KB PDF).

April 25, 1985. Review. 3 Page(s).
John Jordan. Exposure Assessment Branch.
Response to Registration Standard - Rotation Crop Studies Action 660.
Document (PDF) (209 KB PDF).

May 06, 1985. Memorandum. 2 Page(s).
Karl Arne. Residue Chemistry Branch.
PP#3F2884/FAP#3H5396; Chlorpyrifos and its ADI problems.
Document (PDF) (310 KB PDF).

May 09, 1985. Review. 4 Page(s).
Carolyn Offutt. Exposure Assessment Branch.
Review of a protocol to gather reentry data for chlorpyrifos on grass/turf.
Reg./File No 464-524.
Document (PDF) (209 KB PDF).

May 31, 1985. Memorandum. 3 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-448. Chlorpyrifos - Amended Use on Alfalfa.
Accession #256639. RCB #1004.
Document (PDF) (512 KB PDF).

June 21, 1985. Review. 6 Page(s).
Joseph Reinert. Exposure Assessment Branch.
Reg. No. 464-404. Exposure Protocol.
Document (PDF) (486 KB PDF).

July 03, 1985. Review. 4 Page(s).
Carolyn Offutt. Exposure Assessment Branch.
Reg./File 464-448 and -523. Evaluate runoff data for citrus.
Document (PDF) (292 KB PDF).

July 15, 1985. Memorandum. 13 Page(s).
Cynthia Deyrup. Residue Chemistry Branch.
PP #5F3260. (RCB #1128) Chlorpyrifos in/on Legume Vegetables (Except Soybeans).
Evaluation of Analytical Methods and Residue Data. (No Accession Number).
Document (PDF) (1007 KB PDF).

July 15, 1985. Memorandum. 13 Page(s).
Nancy Dodd. Residue Chemistry Branch.
EPA Registration No. 464-523 (RCB #992). Chlorpyrifos Registration Standard.
Dow's Response of April 18, 1985 to Residue Chemistry Data Gaps.
Accession No. 257864.
Document (PDF) (3353 KB PDF).

August 26, 1985. Memorandum. 8 Page(s).
Stephen Saunders. Toxicology Branch.
Acute Inhalation Toxicity and Dermal Sensitization Studies with Chlorpyrifos.
EPA ID No. 464-404. Acc. 257590. Pages 4-6 removed, registrant data.
Inert ingredient info on page 7 is not included. Tox review 004633.
Document (PDF) (607 KB PDF).

September 09, 1985. Memorandum. 10 Page(s).
Byron Backus. Toxicology Branch.
3.0% Chlorpyrifos Cat Collar. Cholinesterase (collar exposure) - cat.
Acc. 258494. Tox review 004646.
Document (PDF) (709 KB PDF).

September 11, 1985. Memorandum. 10 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-358. Chlorpyrifos (Dursban 6 Insecticidal Concentrate)
Product Chemistry Data Gaps in Response to the Chlorpyrifos Registration Standard.
Accession No. 257598. RCB No. 946. (continued).
Document (PDF) (2221 KB PDF).
Attachment(s) Following:

September 11, 1985. Memorandum.
Sami Malak. Residue Chemistry Branch.
(cont.) Manufacturing process info and information concerning the source of
product ingredients pages 2 and 3 not included. Quality control procedure info
page 4 not included Page 8 removed, confidential statement of formula.
Pages 9-10 removed, MP & QC info.

*End of Attachments*

September 11, 1985. Memorandum. 10 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-564. Chlorpyrifos (Dursban MCR Insecticidal
Concentrate) Product Chemistry Follow-Ups in Response to the Chlorpyrifos
Registration Standard Data Gaps. Accession No. 257594. RCB No. 932.(continued)
Document (PDF) (1876 KB PDF).
Attachment(s) Following:

September 11, 1985. Memorandum.
Sami Malak. Residue Chemistry Branch.
(cont.) Manufacturing process info pages 2 and 3 is not included. Quality control
procedure info pages 2,3 and 4 is not included. Page 8 removed, confidential
statement of formula. Pages 9-10 removed, confidential appendix.

*End of Attachments*

September 11, 1985. Memorandum. 10 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-588. Chlorpyrifos (Dursban HF Insecticide Concentrate).
Product Chemistry follow-ups in Response to the Chlorpyrifos Registration Standard
Data Gaps. Accession No. 257596. RCB No. 931. (continued).
Document (PDF) (2005 KB PDF).
Attachment(s) Following:

September 11, 1985. Memorandum.
Sami Malak. Residue Chemistry Branch.
(Cont.) Manufacturing process info pages 2 and 3 not included. Source of product
ingredients page 2 not included Quality control procedure info page 4 not included.
Page 8 removed, confidential statement of formula. Pages 9-10 removed, MP & QC info.

*End of Attachments*

September 11, 1985. Memorandum. 12 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration Nos. 432-625 and 432-662. Chlorpyrifos (Ultratec) Product
Chemistry Data Follow-up in response to the Chlorpyrifos Registration Standard.
Accession Nos 257061 and 257122. RCB No's 745 and 765 (cont).
Document (PDF) (1981 KB PDF).
Attachment(s) Following:

September 11, 1985. Memorandum.
Sami Malak. Residue Chemistry Branch.
(cont.) Source of product ingredients pages 1 and 3 is not included.
Manufacturing process info page 3 is not included. Quality control procedure info
page 4 is not included. Pages 8-9 removed, confidential staement of formula.
Pages 10-12 removed, MP & QC info.

*End of Attachments*

September 11, 1985. Memorandum. 14 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-558. Chlorpyrifos (Dursban R Insecticidal Chemical)
Product Chemistry Data Gaps in Response to the Chlorpyrifos Registration Standard
Data Gaps. Accession No. 257591. RCB No. 947.(cont)
Document (PDF) (1902 KB PDF).
Attachment(s) Following:

September 11, 1985. Memorandum.
Sami Malak. Residue Chemistry Branch.
(cont.) Source of product ingredients, manufacturing process info pages 2, 3 is
not included. Product impurity info and quality control procedure information page
4 is not included. Page 9 removed, confidential statement of formula.
Pages 10-14 removed, MP & QC info.

*End of Attachments*

September 19, 1985. Memorandum. 6 Page(s).
Gobind Makhijani. Residue Chemistry Branch.
Chlorpyrifos. Response to Data Gaps in Product Chemistry (I.D. No. 464-381, EPA
Acc. No. 257597, RCB #930). Source of ingredients and manufacturing process info
pages 1,2 not included. Quality control info page 3 not included.
Document (PDF) (1014 KB PDF).

September 25, 1985. Memorandum. 10 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-567. Chlorpyrifos (Dursban 6R Insecticidal Concentrate).
Product Chemistry Follow- ups in Response to the Chlorpyrifos Registration Standard
Data Gaps. Accession No. 257593. RCB No. 935. (cont.).
Document (PDF) (1694 KB PDF).
Attachment(s) Following:

September 25, 1985. Memorandum.
Sami Malak. Residue Chemistry Branch.
(cont.) Manufacturing process info page 2 is not included. Source of product
ingredients page 3 not included. Quality control procedure info pages 3 and 4 is
not included. Page 8 removed- confidential statement of formula. Pages 9-10
removed- MP & QC info.

*End of Attachments*

September 25, 1985. Memorandum. 11 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-559. Chlorpyrifos (Dursban 30 SEC Insecticidal
Concentrate) Product Chemistry Follow-Ups in Response to the Chlorpyrifos
Registration Standard Data Gaps ( accession No. 257595). RCB No. 940. (cont.)
Document (PDF) (1693 KB PDF).
Attachment(s) Following:

September 25, 1985. Memorandum.
Sami Malak. Residue Chemistry Branch.
(cont.) Source of product ingredients and manufacturing process information on
pages 2,3,4 is not included. Page 8 removed, confidential statement of formula.
Pages 9-11 removed, manufacturing process, source and quality control procedure.

*End of Attachments*

September 27, 1985. Memorandum. 10 Page(s).
Gobind Makhijani. Residue Chemistry Branch.
Chlorpyrifos; Response to data gaps in product chemistry. EPA Reg. No. 45606-2
through 45606-9 Accession No. 257470. RCB Nos: 869, 870, 871, 872, 873, 874,
875, 876 (cont.)
Document (PDF) (1275 KB PDF).
Attachment(s) Following:

September 27, 1985. Memorandum.
Gobind Makhijani. Residue Chemistry Branch.
(cont.) Source of product ingredients pages 2 and 3 is not included. manufacturing
process inf page 2 is not included. Quality control procedure info page 4 not
included. Pages 7-10 removed, confidential appendix.

*End of Attachments*

September 27, 1985. Memorandum. 11 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-474. Chlorpyrifos (Lorsban 1-PE/Polyethylene-D) Product
Chemistry Follow-Ups in Response to the Chlorpyrifos Registration Standard Data
Gaps. Accession No. 257592. RCB No. 936. (continued).
Document (PDF) (1555 KB PDF).
Attachment(s) Following:

September 27, 1985. Memorandum.
Sami Malak. Residue Chemistry Branch.
(cont.) Source of product ingredients pages 2,3,4 and 5 not included.
Manufacturing process info pages 2 and 3 is not included. Quality control
procedure info page 4 not included Page 9 removed, confidential statement of
formula. Pages 10-11 removed, confidential appendix (MP, QCP, source).

*End of Attachments*

October 01, 1985. Memorandum. 7 Page(s).
D. Stephen Saunders. Toxicology Branch.
Supplement to the Mouse Oncogenicity Study with Chlorpyrifos EPA ID. No. 464-404
'Toxicology Branch recommends MRID 00054352 be upgraded.' Excerpt of 004747.
Document (PDF) (607 KB PDF).

October 10, 1985. Memorandum. 8 Page(s).
D. Stephen Saunders. Toxicology Branch.
Supplement to Two-Year Chronic Feeding Study in Dogs With Chlorpyrifos.
EPA ID No. 464-558. Acc 257601. Tox review 004712.
Document (PDF) (742 KB PDF).

October 18, 1985. Memorandum. 14 Page(s).
Michael Firestone. Residue Chemistry Branch.
PP #5F3286 [RCB Nos. 1306, 1307, and 1308]. Chlorpyrifos on Fruiting Vegetables
(Except Cucurbits) - Crop Group VIII Commodities. Evaluation of Analytical Methods
and Residue Data (Accession No. 073734).
Document (PDF) (895 KB PDF).

November 06, 1985. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
464-ANR. Comments on the proposed protocol to determine residues in food after
applications of microencapsulated chlorpyrifos in food handling establishments.
RCB No. 44.
Document (PDF) (394 KB PDF).

November 06, 1985. Memorandum. 5 Page(s).
Allan Reiter. Residue Chemistry Branch.
EPA Regis. No. 2935-UEL, Amended Registration Chlorpyrifos on Corn, Beets & Almonds.
[No Access. no.; RCB #1242].
Document (PDF) (940 KB PDF).

November 16, 1985. Memorandum. 2 Page(s).
Byron Backus. Toxicology Branch.
Rate of Release of Active from 3.0% Chlorpyrifos Cat Collars.
Inert ingredient info on page 2 is not included. Tox review 004768.
Document (PDF) (95 KB PDF).

December 11, 1985. Memorandum. 17 Page(s).
D. Stephen Saunders. Toxicology Branch.
Mutagenicity Studies with Chlorpyrifos EPA ID No. 464-404; CASWELL #219AA;
Tox. PN #804 Acc. No. 259603. Pages 4-9, 12-17 removed, registrant data.
Tox review 004848.
Document (PDF) (465 KB PDF).

January 24, 1986. Review. 18 Page(s).
Samuel Creeger. Exposure Assessment Branch.
Reevaluation of photolysis on soil study for registration.
Pages 5-11 removed, registration data.
Document (PDF) (754 KB PDF).

February 19, 1986. Memorandum. 3 Page(s).
Cynthia Deyrup. Residue Chemistry Branch.
PP #5F3260. (RCB #503, 504) Chlorpyrifos in/on Legume Vegetables
(Except Soybeans). Amendment of 2/10/86. No Accession Number.
Document (PDF) (161 KB PDF).

February 24, 1986. Memorandum. 3 Page(s).
Linda Propst. Residue Chemistry Branch.
2935-UEA. Lorsban 30 Flowable.
Seed Treatment Registration on Delinted Cottonseed. RCB No. 186.
Document (PDF) (195 KB PDF).

March 06, 1986. Review. 5 Page(s).
Joseph Reinert. Exposure Assessment Branch.
Reg. No.: 49244-1 and 49244-2. Registration - Exposure Data.
Document (PDF) (292 KB PDF).

March 10, 1986. Memorandum. 5 Page(s).
W. T. Chin. Residue Chemistry Branch.
PP#4F3062 (Acc. # 261114; RCB #462 & #463): Chlorpyrifos
(Lorsban 50W) in or on Stone Fruits. Amendment of 1/30/86.
Document (PDF) (293 KB PDF).

March 24, 1986. Memorandum. 4 Page(s).
Michael Metzger. Residue Chemistry Branch.
Chlorpyrifos (Lorsban 50W; EPA Reg. No. 464-552).
Amended Registration for Use on Cherries. Acc. No. 261335 RCB #578.
Document (PDF) (311 KB PDF).

April 01, 1986. Memorandum. 5 Page(s).
Michael S. Metzger. Residue Chemistry Branch.
Chlorpyrifos (Lorsban). Amendment Registration for Foliar Application to
Brassica (Cole) Crop Group Vegetables (Acc. No. 261115). RCB #464, 465.
Manufacturing process information on page 1 is not included.
Document (PDF) (368 KB PDF).

April 10, 1986. Memorandum. 3 Page(s).
Stephen Saunders. Toxicology Branch.
Human Health Risks for Chlorpyrifos. Tox PN #1311; Caswell #219AA.
Document (PDF) (311 KB PDF).

April 15, 1986. Review. 9 Page(s).
Emil Regelman. Exposure Assessment Branch.
Reg./File 464-404.
To inquire whether or not additional crop accumulation studies are required.
Document (PDF) (534 KB PDF).

May 13, 1986. Memorandum. 3 Page(s).
Linda Propst. Residue Chemistry Branch.
EPA Reg. No. 464-523. Chlorpyrifos on Peanuts. Amended Registration. RCB No. 786.
Document (PDF) (173 KB PDF).

May 19, 1986. Review. 11 Page(s).
Samuel Creeger. Exposure Assessment Branch.
464-404. Protocol: fish accumulation in bluegill sunfish.
Pages 6-11 removed, registration data.
Document (PDF) (203 KB PDF).

July 07, 1986. Memorandum. 9 Page(s).
Nancy Dodd. Residue Chemistry Branch.
PP #6E3389. (RCB No. 798). Chlorpyrifos on Leeks.
Evaluation of Analytical Method and Residue Data (Accession No. 262136).
Document (PDF) (585 KB PDF).

July 21, 1986. Memorandum. 5 Page(s).
Charles Frick. Residue Chemistry Branch.
EPA Registration No. 464-448 - Chlorpyrifos on Tobacco;
Response to Letter from Dow Chemical Company. RCB No. 882.
Document (PDF) (304 KB PDF).

August 12, 1986. Memorandum. 7 Page(s).
D. Stephen Saunders. Toxicology Branch.
New Use of Lorsban 50W (Chlorpyrifos 50%) on Sour Cherries.
EPA Reg. No. 464-552; Tox PN #1879.
Document (PDF) (387 KB PDF).

August 27, 1986. Memorandum. 9 Page(s).
D. Stephen Saunders. Toxicology Branch.
Mutagenicity Studies with Chlorpyrifos EPA Reg. No. 464-404; Tox. PN #1354;
Caswell #219AA Acc. 261821. MRID 157057. Page 5 removed, registrant data.
Tox review 005424.
Document (PDF) (555 KB PDF).

September 30, 1986. Memorandum. 14 Page(s).
Sami Malak. Residue Chemistry Branch.
PP#6F3358 and Reg. No. 464-552. Chlorpyrifos (Lorsban 50W) on Pears. Evaluation
of Analytical Methods and Residue Data. Accession # 261146. RCB #'s 497 & 498.
Document (PDF) (954 KB PDF).

October 25, 1986. Review. 45 Page(s).
Emil Regelman. Exposure Assessment Branch.
Reg./File No. 464-404. Addendum to a Standard.
Document (PDF) (2560 KB PDF).

December 01, 1986. Memorandum. 5 Page(s).
Nancy Dodd. Residue Chemistry Branch.
PP #6E3389 (RCB No. 1439). Chlorpyrifos on Leeks.
Amendment Dated August 19, 1986. Record #180526.
Document (PDF) (278 KB PDF).

December 01, 1986. Memorandum. 8 Page(s).
Nancy Dodd. Residue Chemistry Branch.
PP #6E3439. (RCB No. 1290) Chlorpyrifos on Dates.
Evaluation of Analytical Method and Residue Data (Accession No. 264129).
Inert ingredient information on page 4 is not included.
Document (PDF) (544 KB PDF).

December 05, 1986. Memorandum. 4 Page(s).
William Anthony. Residue Chemistry Branch.
EPA File #464-ARE [RCB #165][Acc. #264152]. Chlorpyrifos [Lorsban-2LV]:
New Product Registration for Use on Cotton in Arizona and California Acc 264152.
Document (PDF) (231 KB PDF).

December 22, 1986. Review. 4 Page(s).
Joseph Reinert. Exposure Assessment Branch.
Reg. No.: 49244-1 and 49244-2. Applicator Exposure Protocol.
Document (PDF) (214 KB PDF).

January 21, 1987. Memorandum. 3 Page(s).
Martin F. Kovacs. Residue Chemistry Branch.
Chlropyrifos Registration Standard Follow-up. Dow's Response of July 1986
with Hen Metabolism Study. Accession No. 264029. RCB No. 1429.
Document (PDF) (217 KB PDF).

January 27, 1987. Memorandum. 15 Page(s).
Winnie Teeters. TOX/HED.
Expedited Review of Chlorpyrifos 90-Day Rat Inhalation Study EPA ID #464-404.
Accession No. 400139, Caswell #219AA. Tox. PN # 7-0237 Pages 5, 7-8, and 10-14
removed, registrant data. Tox review 005685.
Document (PDF) (1188 KB PDF).

February 02, 1987. Memorandum. 2 Page(s).
Nancy Dodd. Residue Chemistry Branch.
PP #6E3439 (RCB #1804). Chlorpyrifos on Dates. Amendment Dated 12/15/86.
Record #187256. (No Accession Number).
Document (PDF) (125 KB PDF).

February 02, 1987. Memorandum. 3 Page(s).
Nancy Dodd. Residue Chemistry Branch.
PP #6E3389 (RCB #1803). Chlorpyrifos on Leeks. Amendment Dated 12/15/86.
Record #187257. (No Accession Number).
Document (PDF) (144 KB PDF).

March 05, 1987. Review. 4 Page(s).
Allen Vaughan. Ecological Effects Branch.
Killmaster II Proposed Registration of Use on Sewer Man-Hole Covers.
Document (PDF) (185 KB PDF).

March 06, 1987. Letter. 2 Page(s).
Dennis Edwards. Insecticide-Rodenticide Branch.
90-Day Inhalation Study, Chlorpyrifos Registration Standard.
Your Application Dated November 24, 1986.
Document (PDF) (1246 KB PDF).
Attachment(s) Following:

November 24, 1986. Letter. 1 Page(s).
R.F. Bischoff. Dow Chemical U.S.A.
Chlorpyrifos Reregistration, 90-Day Inhalation Study in Rats.

January 22, 1987. Memorandum. 15 Page(s).
Winnie Teeters. Toxicology Branch.
Expedited Review of Chlorpyrifos 90-Day Rat Inhalation Study.
EPA ID #464-404. Accession No. 400139, Caswell # 219AA (Data Evaluation Report)
Pages 5, 7, 9-14 removed, registrant data. Tox review 005685.

*End of Attachments*

April 30, 1987. Memorandum. 8 Page(s).
W. T. Chin. Residue Chemistry Branch.
PP #7E3466. Chlorpyrifos (Lorsban) in or on Blueberries.
Evaluation of Analytical Method and Residue Data. (Acc. #265508, RCB #1562).
Document (PDF) (547 KB PDF).

May 01, 1987. Review. 3 Page(s).
Emil Regelman. Exposure Assessment Branch.
Killmaster II New Use for Control of Sewer Cockroach in Manholes.
Document (PDF) (117 KB PDF).

June 18, 1987. Memorandum. 3 Page(s).
William Anthony. Residue Chemistry Branch.
ID #464-ARE [RCB #2349][MRID #401095-02]. Chlorpyrifos [Lorsban-2LV]:
New Product Registration for Use on Cotton in Arizona and California.
Document (PDF) (175 KB PDF).

July 13, 1987. Memorandum. 6 Page(s).
Maxie Jo Nelson. Residue Chemistry Branch.
PP #7E3536. Rcb #2482. MRID #402324-00, -01. Chlorpyrifos - 0.1 ppm
(of Which No More Than 0.05 ppm is Chlorpyrifos) - Cherimoya, Sapote, Guava (Pineapple).
Document (PDF) (355 KB PDF).

July 16, 1987. Memorandum. 2 Page(s).
W. T. Chin. Residue Chemistry Branch.
PP # 7E3466. Chlorpyrifos (Lorsban) in or on Blueberries.
Amendment of 5/29/87 (No Acc. Number, RCB #2454).
Document (PDF) (117 KB PDF).

July 20, 1987. Memorandum. 9 Page(s).
Alan Levy. Toxicology Branch.
Response by Registrant to EPA Comments Regarding a 90-Day Nose-Only Inhalation
Study in Fischer 344 Rats with Chlorpyrifos (Dow Study No. K-044793-007)
- EPA ID 64-404... * Pages 3-5, 7, 11 removed, registrant data. Tox review 006011.
Test methods on page 6 not included.
Document (PDF) (913 KB PDF).

August 04, 1987. Review. 30 Page(s).
Therese Dougherty. Exposure Assessment Branch.
Reg./File # 464-404 Review fish accumulation study as required by Registration Standard.
Pages 10-19, 26-30 removed, registrant data. MRID 400564-01.
Document (PDF) (792 KB PDF).

August 19, 1987. Memorandum. 8 Page(s).
Sami Malak. Residue Chemistry Branch.
EPA Reg. No. 464-448. Chlorpyrifos Reregistration. Evaluation of Residue Data and
Analytical Methods to Support Separate Tolerances for Chlorpyrifos and its
Metabolite... Manufacturing process information on page 2, and inert ingredient
information on page 3 are not included.
Document (PDF) (582 KB PDF).

September 02, 1987. Review. 8 Page(s).
Michael Firestone. Exposure Assessment Branch.
Reg. No.: 464-404. Support of the Existing Registration of the Dow Turf
Insecticide Line of Products.
Document (PDF) (531 KB PDF).

October 29, 1987. Memorandum. 6 Page(s).
Michael Metzger. Residue Chemistry Branch.
Chlorpyrifos (Lorsban 4E, EPA Reg. No. 464-448) on Tobacco.
Amended Registration for Increased Application Rate. Acc. No. 402652-01.
Document (PDF) (376 KB PDF).

December 17, 1987. Review. 4 Page(s).
Therese Dougherty. Exposure Assessment Branch.
Reg./File No 464-404 Reevaluation of rotational crop restriction.
Document (PDF) (191 KB PDF).

March 01, 1988. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
49244-1. 49244-2. Registration Applications for Chlorpyrifos Formulations
to be Used in Food Handling Establishments. No. MRID No. RCB Nos. 3204 and 3205.
Document (PDF) (170 KB PDF).

April 29, 1988. Memorandum. 28 Page(s).
Alan Levy. Toxicology Branch.
3,4,5-Trichloro-2-Pyridinol (TCP), a Metabolite of Chlorpyrifos: One 3-Month Rat
Dietary Toxicity Study, A Rat Teratogenicity (Developmental Toxicity) Study,
A Rabbit Teratogenicity (Developmental Toxicity) Study & Four Mutagenicity Studies.
Tox Review No. 006685.
Document (PDF) (2064 KB PDF).

June 01, 1988. Memorandum. 18 Page(s).
Alan Levy. Toxicology Branch.
Chlorpyrifos: Tissue Distribution and Metabolism of Orally Administered
C14-Labeled Chlorpyrifos in Fischer 344 Rats - EPA Accession No. 404589-01...
Pages 12-18 removed, registrant data. Tox review 006722.
Document (PDF) (823 KB PDF).

June 17, 1988. Memorandum. 2 Page(s).
Quang Bui. Toxicology Branch.
Amended registration for the use of Chlorpyrifos in plenum type structures
EPA ID. No. 464-562.
Document (PDF) (94 KB PDF).

June 28, 1988. Review. 18 Page(s).
Michael Firestone. Exposure Assessment Branch.
Reg./File No 464-562 Amended Registration for Plenum Housing.
Document (PDF) (906 KB PDF).

July 08, 1988. Memorandum. 7 Page(s).
Francis Suhre. Residue Chemistry Branch.
EPA Reg. No. 299-EER; Martin's Ear-Tix-Tox (Chlorpyrifos);
No MRID No.; RCB No. 3868. Inert ingredient information on page 2,
and manufacturing process information on page 3 are not included.
Page 7 is not included - confidential statementof formula.
Document (PDF) (483 KB PDF).

August 16, 1988. Memorandum. 2 Page(s).
Linda Propst. Residue Chemistry Branch.
45600-1. Request to Register Chlorpyrifos Formulation for Use
in Food Handling Establishment. No MRID No.; RCB No. 4117.
Document (PDF) (161 KB PDF).

August 30, 1988. Memorandum. 3 Page(s).
Leung Cheng. Dietary Exposure Branch.
88-OR-19. Section 18 Exemption. Chlorpyrifos on Hops. No MRID #. DEB #4276.
Document (PDF) (187 KB PDF).

September 02, 1988. Memorandum. 124 Page(s).
Alan Levy. Fungicide/Herbicide Toxicology Branch.
PYRINEX (Chlorpyrifos): A Thirteen Week Subchronic Toxicity Study in Rats,
a Teratology Study in Rats, a Teratology Study in Rabbits and Three Mutagenic Studies.
Tox review 006851. MRID 404364-07,-11,-08,-10,-09.
Pages 17- 25, 39-47, 53-56, 64-77, 82-99, 103-108, 113-124 removed-RD.
Document (PDF) (4302 KB PDF).

September 19, 1988. Memorandum. 2 Page(s).
Alan Levy. Fungicide/Herbicide Toxicology Branch.
Dursban TC (Chlorpyrifos): Amended Registration for Plenum Housing -
EPA Identification No. 464-562; EPA Record No. 227274; Caswell No. 219AA;
Tox. Branch Project No. 8-0975.
Document (PDF) (110 KB PDF).

September 23, 1988. Memorandum. 8 Page(s).
Stephanie Willett. Dietary Exposure Branch.
PP #3F2884 and Chlorpyrifos Registration Standard. Dow's Response to DEB
Review of March 9, 1988. MRID Nos. 406388-01 thru -03. DEB No. 3938.
Document (PDF) (680 KB PDF).

September 27, 1988. Memoarndum. 4 Page(s).
Dennis Edwards. Insecticide-Rodenticide Branch.
Toxicology Data Pyrinex (Chlorpyrifos) Insecticide EPA File Symbol 11678-UL.
Document (PDF) (326 KB PDF).

October 13, 1988. Review. 3 Page(s).
Paul Mastradone. Environmental Fate & Ground Water Branch.
Review Terrestrial Field Dissipation Study. MRID 40395201.
Document (PDF) (211 KB PDF).

October 28, 1988. Data Eval. Rec. 4 Page(s).
Daniel Rieder. Ecological Effects Branch.
Toxicity of Selected Controlled Release and Corresponding
Unformulated Technical Grade Pesticides to the Fathead Minnow.
Document (PDF) (197 KB PDF).

October 31, 1988. Review. 2 Page(s).
Emil Regelman. Environmental Fate & Ground Water Branch.
464-404; Review confined rotational crops (165-1) MRID 256636-00.
Document (PDF) (101 KB PDF).

November 25, 1988. Memorandum. 3 Page(s).
Martha Bradley. Dietary Exposure Branch.
PP #8E3690, PP #8E3691. PP #8E3692, PP #8E3693. Inadvertent Residues of Diazinon,
Methidathion, Chlorpyrifos and Ethyl Parathion. MRID Nos. 408284-00, -01, 408285-00,
-01, 408286-00, -01, 408287-00, -01. DEB Nos. 4434, 4432, 4431, 4433.
Document (PDF) (246 KB PDF).

December 01, 1988. Data Eval. Rec.. 18 Page(s).
M. Coleman. Dynamac Corporation for EFGWB.
Study 2; Photodegradation in water.
Pages 5-18 removed, registrant data. MRID 40026101.
Document (PDF) (266 KB PDF).

December 01, 1988. Data Eval. Rec.. 20 Page(s).
K. Patten. Dynamac Corporation for EFGWB.
Study 4; Photodegradation on soil
Pages 5-20 removed, registant data. MRID 00149224, 00153082.
Document (PDF) (274 KB PDF).

December 01, 1988. Data Eval. Rec.. 21 Page(s).
L. Binari. Dynamac Corporation - EFGWB.
Study 9 Field Dissipation - Terrestrial
Pages 7-21 removed, registrant data. MRID 40395201.
Document (PDF) (422 KB PDF).

December 01, 1988. Data Eval. Rec.. 26 Page(s).
L. Binari. Dynamac Corporation - EFGWB.
Study 5 Photodegradation in air.
Pages 5-26 removed, registrant data. MRID 40234801.
Document (PDF) (303 KB PDF).

December 01, 1988. Data Eval. Rec.. 28 Page(s).
L. Binari. Dynamac Corporation.
Study 8 Mobility - Laboratory Volatility.
Pages 6-28 removed, registrant data. MRID 00155638, 40050402.
Document (PDF) (365 KB PDF).

December 01, 1988. Data Eval. Rec.. 30 Page(s).
L. Binari. Dynamac Corporation (for EFGWB).
Study 12 Confined Accumulation - Rotational Crops
Pages 6-30 removed, registrant data. MRID 00149415.
Document (PDF) (457 KB PDF).

December 01, 1988. Data Eval. Rec.. 41 Page(s).
J. Harlin. Dynamac Corporation - EFGWB.
Study 13 Laboratory Accumulation - Fish
Pages 6-41 removed, registrant data. MRID 40056401.
Document (PDF) (384 KB PDF).

December 01, 1988. Data Eval. Rec.. 45 Page(s).
L. Binari. Dynamac Corporation - EFGWB.
Study 10 Field Dissipation - Terrestrial
Pages 7-45 removed, registrant data. MRID 40059001.
Document (PDF) (516 KB PDF).

December 06, 1988. Data Eval Rec. 7 Page(s).
Kimberly Rhodes. for Ecological Effects Branch.
Flow-through Acute Toxicity Test for Freshwater Fish Species Tested: Salmo gairdneri
Page 7 removed, registrant data. MRID 408409-03.
Document (PDF) (437 KB PDF).

December 06, 1988. DER. 6 Page(s).
Henry Craven. Ecological Effects Branch.
Acute Flow-through Toxicity of Chlorpyrifos Technical to Dapnia magna.
Page 6 removed, registration data. MRID 408409-02.
Document (PDF) (411 KB PDF).

December 06, 1988. DER. 7 Page(s).
Henry Craven. Ecological Effects Branch.
Acute Flow-Through Toxicity of Chlorpyrifos Technical to Bluegill Sunfish.
Page 7 removed, registration data. MRID 408409-04.
Document (PDF) (438 KB PDF).

December 13, 1988. DER. 3 Page(s).
Henry Craven. Ecological Effects Branch.
Avian Acute Oral LD50 - Mallard duck Accession number 408547-01.
Document (PDF) (168 KB PDF).

December 13, 1988. DER. 6 Page(s).
Henry Craven. Ecological Effects Branch.
Avian dietary LC50 - Bobwhite quail
Pages 4-6 removed, registrant data. Accession number 408547-03.
Document (PDF) (221 KB PDF).

December 13, 1988. DER. 6 Page(s).
Henry Craven. Ecological Effects Branch.
Avian Dietary LC50 - Mallard Duck
Pages 4-6 removed, registrant data. Accession number 408547-02.
Document (PDF) (209 KB PDF).

December 15, 1988. Memorandum. 3 Page(s).
Alan Levy. Toxicology Branch.
Chlorpyrifos Registration Standard - Revision to Exclude TCP Metabolite
from Existing Tolerances; Identifying No. 3F2884; Record No. 233507;
HED Project No. 9-0196; Caswell No. 219AA.
Document (PDF) (194 KB PDF).

December 15, 1988. Memorandum. 4 Page(s).
Debra Edwards. Dietary Exposure Branch.
Chlorpyrifos Second Round Review (SRR)
- Anticipated Residues for Use in Dietary Exposure Assessment.
Document (PDF) (253 KB PDF).

December 21, 1988. Memorandum. 9 Page(s).
Stephanie Willett. Dietary Exposure Branch.
PP #3F2884 and Chlorpyrifos Registration Standard. Additional Comments and
Recommendations Concerning Appropriate Tolerances and Residue Data Requirements.
No MRID Number. No DEB Number.
Document (PDF) (474 KB PDF).

December 29, 1988. Memorandum. 5 Page(s).
Leung Cheng. Dietary Exposure Branch.
89-TX-03. Section 18 Exemption. Chlorpyrifos on Winter Wheat.
No MRID #. Branch #4744.
Document (PDF) (384 KB PDF).

January 04, 1989. Memorandum. 3 Page(s).
William Anthony. Dietary Exposure Branch.
ID #CA-880026. [RCB#: 4590][Acc#: None]. Chlorpyrifos {Lorsban-4E]:
24(c) on Asparagus in the State of California.
Document (PDF) (238 KB PDF).

January 13, 1989. Memorandum. 16 Page(s).
Debra Edwards. Dietary Exposure Branch.
Addendum to the Residue Chemistry Chapter of the Chlorpyrifos Second
Round Review (SRR) - Removal of the Metabolit 3,5,6-trichloropyridinol
(TCP) from the Tolerance Definition.
Document (PDF) (1073 KB PDF).

January 24, 1989. Memorandum. 3 Page(s).
Linda Propst. Dietary Exposure Branch.
11540-RT. Request to Add Numerous Sites Including Food Handling Establishments
to the Registered Label of the Chlorpyrifos Formulation (Warrior). No MRID No.
DEB No. 4786.
Document (PDF) (194 KB PDF).

January 27, 1989. Memorandum. 2 Page(s).
Linda Propst. Dietary Exposure Branch.
EPA Reg. No. 464-448. Amended Label for Lorsban 4E to Allow for its
Use on Asparagus Grown in California. MRID No. 40900601. DEB No. 4702.
Document (PDF) (102 KB PDF).

March 21, 1989. Memorandum. 3 Page(s).
Debra Edwards. Dietary Exposure Branch.
Residues of Chlorpyrifos per se in Meat and Milk as a Result
of Ingestion of Treated Feed Items.
Document (PDF) (224 KB PDF).

April 03, 1989. Memorandum. 13 Page(s).
Linda Taylor. Toxicology Branch.
Chlorpyrifos - 2-Year Dietary Chronic Toxicity/Oncogenicity Study - Rats.
MRID 409528-02. Pages 12-13 removed, registrant data. Tox review 007107.
Document (PDF) (954 KB PDF).

April 27, 1989. Memorandum. 3 Page(s).
Debra Edwards. Dietary Exposure Branch.
Chlorpyrifos: Impact of Cattle and Sheep Treatments on Dietary Exposure
(DEB No. 5146, HED Project No. 9-1186, RD Record No. 242729).
Document (PDF) (255 KB PDF).

April 28, 1989. Memorandum. 25 Page(s).
Byron Backus. Toxicology Branch.
Happy Jack Flealine Flea and Tick Collar.
Cholinesterase inhibition and rate of release.
MRID 406031-02, -03, -04. Tox review 007150.
Document (PDF) (2698 KB PDF).

May 09, 1989. Memorandum. 5 Page(s).
Jane Smith. Dietary Exposure Branch.
89-WA-11, 89-WY-02. Section 18 Specific Exemption for the Use of Chlorpyrifos
(Lorsban 4E, EPA Reg. No. 464-448) on Spring and Winter Wheat and Barley.
No Accession Number/ No MRID Number. DEB #5283, 5284.
Document (PDF) (452 KB PDF).

May 17, 1989. Memorandum. 3 Page(s).
Alan Levy. Toxicology Branch.
Chlorpyrifos: 4-Day Dermal Probe and 21-Day Dermal Toxicity Studies in Fischer
344 Rats - Identification No. 464-404; Record No. 239190; MRID No. 40972801...
Tox Review 007188.
Document (PDF) (149 KB PDF).

May 19, 1989. Efficacy Review. 1 Page(s).
Vern McFarland. Insecticide Rodenticide Branch.
File or Reg. No. 464-562 (62719-47). Dursban TC Termiticide Concentrate.
Provide performance data in support of additional dilutions of 0.5% and 2.0%
actual for amended labeling and rationale for amended termite directions.
MRID 40965801.
Document (PDF) (70 KB PDF).

June 23, 1989. Memorandum. 3 Page(s).
Francis Griffith. Dietary Exposure Branch.
Chlorpyrifos (Lorsban 50W). EPA Reg. No. 464-552. Review of Amended
Registration Request for Additional Uses on Blueberries. (No MRID No.)
[DEB #5390](HED Project 9-1547).
Document (PDF) (177 KB PDF).

June 29, 1989. Memorandum. 20 Page(s).
David Jaquith. Non-Dietary Exposure Branch.
EPA Reg. No. 464-629 Exposure Assessment for Empire 20,
a Microencapsulated Formulation of Chlorpyrifos for Termiticide Use.
Document (PDF) (940 KB PDF).
Attachment(s) Following:

June 28, 1988. Review.
Michael Firestone. Exposure Assessment Branch.
Amended Registration for Plenum Housing EPA Reg.
No. 464-562 Indoor air concentration.

*End of Attachments*

June 30, 1989. Memorandum. 6 Page(s).
Alan Levy. Toxicology Branch.
Pyrinex (Chlorpyrifos): Makhteshim-Agan (America) Inc. Response to EPA's
Request Regarding a Thirteen-Week Rat Study and a Rabbit Teratology Study
[Toxicology Document No. 006851... MRID Nos. 404364-06 and 404364-08...
Tox Review 007302.
Document (PDF) (425 KB PDF).

July 13, 1989. Memorandum. 26 Page(s).
Alan Levy. Toxicology Branch.
Pyrinex (Chlorpyrifos) - Thirteen-Week Inhalation Study in Rats -
Identification No. 11678-UL; MRID No. 409084-01...
Pages 15-26 removed, registrant data. Tox Review 007349.
Document (PDF) (1076 KB PDF).

July 26, 1989. Memorandum. 4 Page(s).
Francis Griffith. Dietary Exposure Branch.
464-EUP-96 Chlorpyrifos Bait for Control of Grasshoppers in Non-Crop Area.
Review of Request for Additional Extension of Experimental Use Permit in South
Dakota, North Dakota, Wyoming, Minnesota, Colorado, Nebraska, Iowa and Montana.
(MRID #411184-01) [DEB #5507] {HED Project #9-1671}.
Document (PDF) (348 KB PDF).

September 12, 1989. Memorandum. 2 Page(s).
Elizabeth Haeberer. Dietary Exposure Branch.
Chlorpyrifos: Impact of Direct Animal Treatments for Livestock on Dietary Exposure,
Clarification of Use (No MRID No., RD Record No. 249459, DEB No. 5646).
Document (PDF) (144 KB PDF).

October 17, 1989. Review. 9 Page(s).
Emil Regelman. Environmental Fate & Ground Water Branch.
Reg. No. 464-552 Review application for amended registration
of Lorsban 50W to add use on blueberries.
Document (PDF) (526 KB PDF).

January 04, 1990. Memorandum. 3 Page(s).
Alan Levy. Toxicology Branch.
Chlorpyrifos (Pyrinex): Makhteshim-Agan (America) Inc.; Rat Inhalation Study,
Agency Reply to Registrant's Response; Toxicology Requirements for "Crack and
Crevice" Application. MRID 409084-01 Tox Review 007658.
Document (PDF) (199 KB PDF).

January 05, 1990. Memorandum. 17 Page(s).
Alan Levy. Toxicology Branch.
Chlorpyrifos - Registration of the Formulation XRM-5136 - Acute Studies.
MRID Nos. 411346-01, -02, -03, -04, -05, and -06.
Inert ingredient information on page 1 is not included. Tox review 007664.
Document (PDF) (1061 KB PDF).

January 10, 1990. Memorandum. 19 Page(s).
David Jaquith. Non-Dietary Exposure Branch.
Re-evaluation of Chlorpyrifos Lawn Care Exposure Study. (HED Project # 9-0609).
Document (PDF) (1169 KB PDF).

January 11, 1990. Memorandum. 2 Page(s).
Maxie Jo Nelson. Dietary Exposure Branch.
PP #&E3536. Chlorpyrifos in or on Cherimoya, Feijoa, and Sapote.
Amendment of 9/26/89. DEB #5919, HED #0-0015, MRID #: None.
Document (PDF) (127 KB PDF).

February 07, 1990. Review. 9 Page(s).
James Akerman. Ecological Effects Branch.
Reg. No. 464-552 Proposed registration for use on blueberries.
Document (PDF) (530 KB PDF).

March 21, 1990. Memorandum. 4 Page(s).
Curt Lunchick. Non-Dietary Exposure Branch.
Review of a Protocol to Assess Post-Application Exposure to
Chlorpyrifos Applied in Residences (HED Project #0-0697).
Document (PDF) (325 KB PDF).

April 13, 1990. Memorandum. 7 Page(s).
Martha Bradley. Dietary Exposure Branch.
California Study of Unintentional Residues of Diazinon, Methidathion, Chlorpyrifos,
and Ethyl Parathion. MRID No: None. DEB No. 6216. HED Project #0-0491.
Document (PDF) (705 KB PDF).

June 19, 1990. Memorandum. 2 Page(s).
Kenneth Dockter. Dietary Exposure Branch.
Chlorpyrifos (Lorsban 4E; EPA Reg. No. 62719-23).
Add Third Foliar Application on Walnuts. MRIDs 414244-00 & -01. DEB #6582.
Document (PDF) (125 KB PDF).

June 21, 1990. Review. 49 Page(s).
Emil Regelman. Environmental Fate & Ground Water Branch.
Reg./File 358-EEI. Review for EEB of aquatic bioaccumulation and aquatic
dissipation data. Pages 7-22 removed, registration data.
MRID 41205404, 41228801, 41205409.
Document (PDF) (3079 KB PDF).

June 28, 1990. Memorandum. 6 Page(s).
Michael Flood. Dietary Exposure Branch.
FAP #6H5505. Chlorpyrifos for Use in Food Handling Establishments.
EPA Reg. Nos. 62719-74 (Dursban ME Insecticide), 62719-88
(Empire 20 Microencapsulated Insecticide). Amendment of March 3, 1990.
Evaluation of Residue Data. DEB No. 6583. MRID Nos. 414341-00, -01.
Document (PDF) (459 KB PDF).

July 11, 1990. Review. 15 Page(s).
Henry Nelson. Envirnomental Fate & Ground Water Branch.
464-404. Photodegradation on soil and in air protocols.
Pages 5-15 removed, registration data.
Document (PDF) (284 KB PDF).

July 26, 1990. Memorandum. 3 Page(s).
Jane Smith. Dietary Exposure Branch.
AZ900006. 24(c) Registration.
Chlorpyrifos (Lorsban 4E, EPA Reg. No. 464-448) on Asparagus in Arizona. DEB #6837.
Document (PDF) (193 KB PDF).

September 19, 1990. Efficacy Review. 1 Page(s).
Vern McFarland. Insecticide Rodenticide Branch.
File or Reg. No. 62719-88 (formerly 464-629). Dursban ME20 Microencapsulated Insecticide.
Provide performance data in support of addition of a 0.75% a.i.dilution to the label
for use against susceptible & resistant roaches, fleas... MRIDs 41509402, -03, -04.
Document (PDF) (82 KB PDF).

October 03, 1990. Memorandum. 1 Page(s).
Elizabeth Doyle. Toxicology Branch.
Chlorpyrifos - Additional Data Provided for a 4-Day Dermal Probe and a 21-Day
Dermal Toxicity Study in Fischer 344 Rats (MRID No. 409728-01) and Mechanistic
Information. Tox Review 008116.
Document (PDF) (72 KB PDF).

October 16, 1990. Memorandum. 2 Page(s).
Elizabeth Doyle. Toxicology Branch II.
Chlorpyrifos - Dursban TC label amendment.
Document (PDF) (149 KB PDF).

November 05, 1990. Review. 18 Page(s).
Henry Nelson. Envirnomental Fate & Ground Water Branch.
062719-00015. Review protocol on bioaccumulation in oysters.
Pages 7-18 removed, registration data.
Document (PDF) (327 KB PDF).

November 08, 1990. Memorandum. 11 Page(s).
Lucy Markarian. Registration Support Branch.
EPA File Symbol 464-AUO. XRM 5184 TC Termiticide Concentrate.
Inert ingredient info on page 2 not included. Tox review 008574.
Document (PDF) (828 KB PDF).

December 05, 1990. Memorandum. 2 Page(s).
Ameesha Mehta. Occupational & Residential Exposure Branch.
Chlorpyrifos Label Review. HED Project #0-1878.
Document (PDF) (148 KB PDF).

February 17, 1991. Review. 13 Page(s).
Akiva Abramovitch. Environmental Fate & Ground Water Branch.
Review request to amend the label to add use on turf and ornamental
plants (field/greenhouse).
Document (PDF) (896 KB PDF).

March 11, 1991. Memorandum. 4 Page(s).
Bipin Gandhi. Registration Support Branch.
Product Chemistry Review (Supplementary) for Chlorpyrifos (Pyrinex) -
EPA Reg. No. 11678-45 - Accession No. 416230-01.
Document (PDF) (221 KB PDF).

April 03, 1991. Data Eval. Rec.. 14 Page(s).
Herbert Manning. Environmental Fate & Ground Water Branch.
Photolysis degradation in Water (161-2) MRID #41747206.
Pages 4-14 removed, registrant data.
Document (PDF) (211 KB PDF).

April 04, 1991. Memorandum. 5 Page(s).
Christina Swartz. Chemistry Branch.
Chlorpyrifos. Amended Label for Lock-On to Included Alfalfa in Arizona
and California. EPA Reg. No. 62719-79. DEB #7627. MRID No. 417390-01.
Document (PDF) (360 KB PDF).

April 04, 1991. Review. 16 Page(s).
Akiva Abramovitch. Environmental Fate & Ground Water Branch.
Review protocol for field dissipation (warm season and cool season)
of turgrass insecticide. Pages 6-13 removed, registration data.
Document (PDF) (480 KB PDF).

May 08, 1991. Memorandum. 2 Page(s).
Christina Swartz. Chemistry Branch.
Chlorpyrifos. Resubmitted data in support of an amended label for Lock-On to include
alfalfa in Arizona and California. EPA Reg. No. 62719-79. MRID No. 417390-01.
DEB No. 7955. Barcode No. D164122.
Document (PDF) (108 KB PDF).

May 17, 1991. Memorandum. 2 Page(s).
Dennis Edwards. Insecticide-Rodenticide Branch.
Chlorpyrifos Two-Generation Rat Reproduction Study--Preliminary Results.
Document (PDF) (218 KB PDF).
Attachment(s) Following:

April 30, 1990. Memorandum. 2 Page(s).
Alan Levy. Toxicology Branch II.
CHLORPYRIFOS - Preliminary Results of a Two-Generation
Rat Reproduction Study - DowElanco.

*End of Attachments*

July 10, 1991. EEB Review. 8 Page(s).
Michael Barrett. Environmental Fate & Ground Water Branch.
Comment on the detection limit and analytical method used
for chlorpyrifos and 3,5,6.......degradate.
Document (PDF) (506 KB PDF).

July 24, 1991. Memorandum. 5 Page(s).
William Anthony. Chemistry Branch.
ID #91-NM-0003. Chlorpyrifos: Section 18 Crisis Exemption for Use on
Small Grains (Wheat, Barley, and Oats) Grown in the State of New Mexico.
[DEB: #8090; MRID: N/A] [DP Barcode 165042].
Document (PDF) (395 KB PDF).

August 14, 1991. Memorandum. 17 Page(s).
Doug Urban. Ecological Effects Branch.
Chlorpyrifos Degradate Data Evaluation Records: Reregistration Follow-up
(D163629; 191413; S394590) MRID 418290-01, -02, -03, -04, -05.
Document (PDF) (1149 KB PDF).

August 23, 1991. Review. 4 Page(s).
Ecological Effects Branch..
Review of avian dietary studies with microencapsulated products.
MRID Nos. 419655-01 & 02.
Document (PDF) (215 KB PDF).

August 28, 1991. Data Eval. Rec.. 3 Page(s).
Kathryn Valente. Ecological Effects Branch.
Avian Dietary LC50, Mallard duck. MRID 418290-02.
Document (PDF) (270 KB PDF).

September 18, 1991. Memorandum. 2 Page(s).
Felecia A. Fort. Chemistry Branch.
Chlorpyrifos: Additional Requirements Needed for Data Call-In.
DP Barcode D163718. CBRS No. 7912.
Document (PDF) (95 KB PDF).

October 02, 1991. DER. 9 Page(s).
Louis Rifici. Ecological Effects Branch.
Freshwater Invertebrate Static Acute Toxicity Test.
Species Tested: Bluegill sunfish (Lepomis macrochirus.
MRID No. 418852-03. Registration Data information removed from pages 6-7.
Document (PDF) (499 KB PDF).

October 02, 1991. DER. 9 Page(s).
Louis Rifici. Ecological Effects Branch.
Freshwater Invertebrate Static Acute Toxicity Test. Species Tested: Daphnia magna.
MRID No. 418852-02. Registration Data information removed from pages 6-7.
Document (PDF) (501 KB PDF).

October 02, 1991. DER. 9 Page(s).
Louis Rifici. Ecological Effects Branch.
Freshwater Invertebrate Static Acute Toxicity Test.
Species Tested: Rainbow Trout (Oncorhynchus mykiss.
MRID No. 418852-04. Registration Data information removed from pages 6-7.
Document (PDF) (304 KB PDF).

October 07, 1991. DER. 8 Page(s).
Kathryn Valente. Ecological Effects Branch.
Avian Dietary LC50; Bobwhite quail (Colinus virginianus).
Pages 6-8 removed, registration data. MRID No. 419655-02.
Document (PDF) (397 KB PDF).

October 07, 1991. DER. 8 Page(s).
Kathryn Valente. Ecological Effects Branch.
Avian Dietary LC50; Mallard duck (Anas platyrhynchos).
Pages 6-8 removed, registration data. MRID No. 419655-01.
Document (PDF) (381 KB PDF).

December 03, 1991. Memorandum. 2 Page(s).
David Jaquith. Occupational & Residential Exposure Branch.
Reply to Registrant Comments on Air Monitoring Data Requirments
for Dursban TC (HED Project No. 1-2256).
Document (PDF) (139 KB PDF).

December 09, 1991. Memorandum. 11 Page(s).
Mark Perry. Registration Support Branch.
EPA File Symbol/EPA Reg. No.: 7501-31 Lorsban 30 Flowable.
MRID No. 420013-01 & 06.
Document (PDF) (609 KB PDF).

March 06, 1992. Data Eval. Rec. 3 Page(s).
Robert Fricke. Reregistration Branch II.
Subchronic Inhalation Range Finder - Rat MRID 421449-09.
Document (PDF) (204 KB PDF).

March 12, 1992. Data Eval. Rec. 7 Page(s).
Robert Fricke. Toxicology Branch.
90-day oral - Dog (82-1) MRID 421728-01.
Document (PDF) (490 KB PDF).

April 25, 1992. Memorandum. 14 Page(s).
Lucy D. Markarian. Registration Support Branch.
EPA File Symbol/EPA Reg. No.: 62719-EEL Acute studies...
MRID 421190-04, thru -09.
Inert ingredient info on page 2 is not included.
Document (PDF) (968 KB PDF).

May 18, 1992. Memorandum. 7 Page(s).
Leung Cheng. Chemistry Branch.
Chlorpyrifos. Case # 0100. ID # 59101. Residue Data in Response to Notice of
5/18/91. MRID # 422459-04, -05, - 06, -07. CBRS # 9638. DP Barcode D172681.
Document (PDF) (568 KB PDF).

September 02, 1992. Data Eval. Rec. 7 Page(s).
Robert Fricke. Toxicology Branch.
Oral Range Finder - Dog.
Document (PDF) (451 KB PDF).

September 16, 1992. Data Eval. Rec.. 13 Page(s).
Rosemary Graham Mora. KBN Engineering & Applied Sciences Inc./EEB.
Mollusc 96-Hour, Flow-Through Shell Deposition Study.
Species Tested: Eastern Oyster. MRID 422459-03.
Document (PDF) (786 KB PDF).

September 16, 1992. Data Eval. Rec.. 8 Page(s).
Louis Ricifi. KBN Engineering & Applied Sciences Inc.
Estuarine Fish Flow-Through Toxicity Test.
Species Tested: Atlantic Silverside. MRID 422459-01.
Document (PDF) (536 KB PDF).

September 16, 1992. Data Eval. Rec.. 8 Page(s).
Louis Ricifi. KBN Engineering & Applied Sciences/EEB.
Estuarine Shrimp Flow-Through Toxicity Test.
Species Tested: Grass Shrimp. MRID 422459-02.
Document (PDF) (520 KB PDF).

September 23, 1992. Memorandum. 4 Page(s).
Robert Fricke. Toxicology Branch.
Review of data for chlorpyrifos (pyrinex) for Data Call-In notice
MRID 421449-08, -09, 421728-01, -02, -03.
Document (PDF) (276 KB PDF).

October 02, 1992. Memorandum. 2 Page(s).
Dennis Edwards. Insecticide-Rodenticide Branch.
Toxicology Data Pyrinex Technical EPA Registration No. 11678-45
Your Submission dated December 16, 1991.
Document (PDF) (108 KB PDF).

October 03, 1992. Memorandum. 19 Page(s).
Elizabeth Doyle. Toxicology Branch II.
Chlorpyrifos - Review of a Two-Generation Reproduction Study in Rats.
MRID 419303-01. Tox review 009779.
Document (PDF) (965 KB PDF).

December 03, 1992. Memorandum. 19 Page(s).
Lawrence Culleen. Registration Division.
Section 18 Exemption Requests for Use of Chlorpyrifos to Control the Russian
Wheat Aphid in Wheat in Colorado, Nebraska, New Mexico, Texas and Wyoming;
and in Wheat and Barley in Montana -- ACTION MEMORANDUM--(92-CO-02, 92-MT-03,
92-NE-03, 92-NM-03, 92-TX-12, & 92-WY-01).
Document (PDF) (1810 KB PDF).

January 08, 1993. Memorandum. 8 Page(s).
Michael Flood. Chemistry Branch.
PP#3F2884. Chlorpyrifos in Livestock Commodoties. Petition to Separate
the Metabolite Trichloropyridinol (TCP) from the Tolerance Expression.
Amendment dated 11/3/92. MRID # 425427-01.
Document (PDF) (574 KB PDF).

January 12, 1993. Memorandum. 2 Page(s).
Leung Cheng. Chemistry Branch.
PP#4F3008/FAP#1H5295. Chlorpyrifos on Tomatoes, Beans, Peas, and Soybean.
Revised Section F. CBRS # 10973. DP Barcode: D185266.
Document (PDF) (156 KB PDF).

February 08, 1993. Memorandum. 1 Page(s).
Leung Cheng. Chemistry Branch.
Chlorpyrifos. Residue Data in Response to Notice of 9/18/91.
DP Barcode: D176281. Addendum to CBRS # 9638.
Document (PDF) (65 KB PDF).

February 19, 1993. Memorandum. 133 Page(s).
John Bazuin. Science Analysis & Coordination Branch.
Chlorpyrifos Dietary Exposure Analysis: Anticipated Residues on Wheat, Separation of
Trichloropyridinol (TCP) From the Tolerance Expression, and Increase in Tomato Tolerances.
Document (PDF) (12535 KB PDF).

April 27, 1993. Memorandum. 23 Page(s).
Robert Fricke. Toxicology Branch II.
Chlorpyrifos: Review of submitted data to support registration Oncogenicity study
in mice (83-2) MRID 425342-01 Pages 13-23 removed-registrant data.
Document (PDF) (932 KB PDF).

April 30, 1993. Memorandum. 10 Page(s).
Robert Fricke. Toxicology Branch II.
Chlorpyrifos: Review subchronic toxicity study submitted in response to data call-in notice
MRID 425258-01.
Document (PDF) (783 KB PDF).

May 13, 1993. Review. 11 Page(s).
Anthony Maciorowski. Ecological Effects Branch.
Review Proposal to Use Chlorpyrifos on Caneberries.
Document (PDF) (754 KB PDF).

May 26, 1993. Memorandum. 2 Page(s).
Robert Fricke. Toxicology Branch II.
SUBJECT: Chlorpyrifos: Review of generic data submission to support registration.
MRID 426691-01, 424954-04.
Document (PDF) (111 KB PDF).

June 23, 1993. Memorandum. 3 Page(s).
Janet Andersen. Biological Analysis Branch.
The Need for risk Mitigation Measures with a Proposed Use of Chlorpyrifos on Caneberries.
Document (PDF) (221 KB PDF).

June 29, 1993. Memorandum. 7 Page(s).
Jose Morales. Chemistry Branch.
PP#3E4192. Chlorpyrifos in/on Sugarcane. Evaluation of Residue Data and
Analytical Methodology. CBTS# 11397. DP Barcode D188233. MRID#'s 426454-01.
Document (PDF) (655 KB PDF).

July 19, 1993. Data Eval. Rec.. 13 Page(s).
N. Shishkoff. Dynamac Corporation - EFGWB.
Study 5 Racke, K.D., A.L. Kesterson, and S.B. Jackson. 1991. Laboratory volatility
of chlorpyrifos from soil. Pages 5-13 removed, registrant data MRID 41829006.
Document (PDF) (359 KB PDF).

August 02, 1993. Memorandum. 2 Page(s).
Jose Morales. Chemistry Branch.
PP#3E4192. Chlorpyrifos in/on Sugarcane. Amendment in response to review of 6/30/93.
CBTS# 12,276. DP Barcode D193356. MRID# none.
Document (PDF) (90 KB PDF).

August 04, 1993. Data Eval. Rec.. 5 Page(s).
R. Morris. Dynamac Corporation - EFGWB.
Study 3 Racke, K.D., and R.N. Lubinski. 1992.
Sorption of 3,5,6- trichloro-2-pyridinol in four soils. MRID 42493901.
Document (PDF) (299 KB PDF).

August 17, 1993. Memorandum. 11 Page(s).
Patricia McLaughlin. Toxicology Branch.
Toxicology Review for the Reregistration Eligibility Document on Chlorpyrifos (RED).
Document (PDF) (973 KB PDF).

August 18, 1993. Memorandum. 11 Page(s).
Steven A. Knizner. Chemistry Branch.
Chlorpyrifos. Magnitude of the Residue in Onions and Corn Processed Commodities.
Reregistration Case No. 0100. Chemical No. 059101. MRIDs #42649001 and 42649002.
DP Barcode D188151. CBRS #11,372.
Document (PDF) (800 KB PDF).

September 16, 1993. Memorandum. 2 Page(s).
Steven Knizner. Chemistry Branch II.
Chlorpyrifos. Waiver for Magnitude of the Residue in Dill & Okra.
Reregistration Case No. 0100.
Document (PDF) (107 KB PDF).

September 27, 1993. Memorandum. 6 Page(s).
Nancy Dodd. Chemistry Branch I.
PP#4F03008 (CBTS#10804; Barcode #D183901).
Chlorpyrifos on Tomatoes. Anticipated Residues.
Document (PDF) (335 KB PDF).

September 27, 1993. Memorandum. 8 Page(s).
Nancy Dodd. Chemistry Branch I.
ID#062719-00039 (CBTS #10786; Barcode #D183903).
Chlorpyrifos on Peppers. Anticipated Residues.
Document (PDF) (460 KB PDF).
Attachment(s) Following:

September 30, 1992. Memorandum.
Edward Brandt. Economic Analysis Branch.
Percent of Crop Treated Estimates for Chlorpyrifos.

*End of Attachments*

September 29, 1993. Memorandum. 4 Page(s).
G. F. Kramer. Chemistry Branch.
PP#3F4188/FAP#3H5662. Chlorpyrifos in/on Barley.
Evaluation of Petition Method Validation.
MRID# 428212-01. Barcodes D187788, D190700, D192629.
Document (PDF) (192 KB PDF).

November 23, 1993. Memorandum. 9 Page(s).
George Ghali. Health Effects Division.
RfD/Peer Review Report of Chlorpyrifos.
Document (PDF) (790 KB PDF).

December 20, 1993. Review. 37 Page(s).
Anthony Maciorowski. Ecological Effects Branch.
Evaluation of mysid life-cycle study for reregistration purposes.
Pages 18-25 removed, registrant data. MRID 426649-01.
Document (PDF) (1944 KB PDF).

January 24, 1994. EEB Review. 17 Page(s).
Elizabeth Behl. Environmental Fate & Ground Water Branch.
6(a)2 action - respond to reports of chlorpyrifos residues in wells and a cistern.
Page 6 removed, registration data.
Document (PDF) (1526 KB PDF).

February 02, 1994. Memorandum. 10 Page(s).
Mark Perry. Registration Support Branch.
EPA File Symbol: 499-URG Acute oral, acute dermal, acute inhalation, acute eye and
acute skin irritation, dermal sensitization. MRID 430729-02, -03, 04, -05, -06, -07.
Document (PDF) (586 KB PDF).

February 02, 1994. Memorandum. 2 Page(s).
Virginia Dobozy. Toxicology Branch II.
Analysis of Incident Reports for Adams Flea & Tick Dip with Dursban (for Dogs).
Document (PDF) (136 KB PDF).

February 16, 1994. Memorandum. 7 Page(s).
Gary Otakie. Chemistry Branch.
PP#1F2575 - Chlorpyrifos on Citrus - Evaluation of Amendments Including Residue
data to Use Lorsban 50W Wettable Powder and Wettable Powder Packets Insecticides...
MRID No. 426710-01.
Document (PDF) (437 KB PDF).

February 25, 1994. Memorandum. 26 Page(s).
Stephen A. Schaible. Dietary Risk Evaluation Section.
Dietary Exposure Analysis for the Proposed Uses of Chlorpyrifos on Lettuce
(PP#4F03132), Grapes (PP#3F2872) and Tomatoes (PP#4F03008).
Document (PDF) (2662 KB PDF).

March 29, 1994. Memorandum. 15 Page(s).
Robert Fricke. Toxicology Branch II.
CHLORPYRIFOS - Upgrading Acute Neurotoxicity Study MRID 429431-01
(upgrading 426691-01), 424954-04 Pages 10-15 removed, registrant data.
Tox review 010878.
Document (PDF) (796 KB PDF).

March 30, 1994. Memorandum. 1 Page(s).
Robert Fricke. Toxicology Branch.
Chlorpyrifos - Upgrading Acute Neurotoxicity Study MRID 429431-01.
Document (PDF) (97 KB PDF).

April 26, 1994. Memorandum. 10 Page(s).
Robert Fricke. Toxicology Branch.
CHLORPYRIFOS: Review of subchronic neurotoxicity study (82-7)
to support reregistration MRID 429298-01 Tox review 010935.
Document (PDF) (834 KB PDF).

May 23, 1994. Memorandum. 9 Page(s).
Steven Knizner. Chemistry Branch.
Chlorpyrifos. Sunflower Seed Processing Study and Sorghum Grain Magnitude
of the Residue Study. Reregistration Case No. 0100. Chemical No. 059101.
MRID #43181401 and 43191402 DP Barcode D201562 CBRS #13,498.
Document (PDF) (772 KB PDF).

June 22, 1994. Memorandum. 11 Page(s).
Steven Knizner. Chemistry Branch.
Chlorpyrifos. Confined Rotational Crop Study. Reregistration Case No. 0100
Chemical No. 059101 MRID #43210801 DP Barcode D203434 CBRS #13710.
Document (PDF) (939 KB PDF).

June 22, 1994. Record. 34 Page(s).
Henry Nelson. Envirnomental Fate & Ground Water Branch.
Review of protocol for small plot runoff study to determine the efficacy of
VFSs in reducing chlorpyrifos runoff. Pages 9-34 removed, registration data.
Document (PDF) (630 KB PDF).

August 12, 1994. Memorandum. 2 Page(s).
Steven Knizner. Chemistry Branch.
Chlorpyrifos. DowElanco Letter to D.McNielly dated 6/22/94.
Reregistration Case No. 0100 Chemical No. 059101
No MRID # DP Barcode D205979 CBRS #14106.
Document (PDF) (107 KB PDF).

August 15, 1994. Memorandum. 3 Page(s).
Steven Knizner. Chemistry Branch.
Chlorpyrifos. PP#4F3008/FAP#1H5295. Revised Section F - Corn aspirated
grain fractions; Sorghum grain; Sorghum forage... and Sunflower hulls.
Document (PDF) (219 KB PDF).

August 15, 1994. Memorandum. 6 Page(s).
Ian Blackwell. Registration Support Branch.
EPA Reg. No./File Symbol Symbol: 62719-225/ XRM-5222 MRID 427710-01.
Document (PDF) (254 KB PDF).

August 25, 1994. Memorandum. 2 Page(s).
Steven Knizner. Chemistry Branch.
Chlorpyrifos. PP#4F3008/FAP#1H5295.
Revised Section F. Reregsitration Case No. 100 Chemical No. 059101
No MRID # DP Barcodes D206049 and 206047 CBRS #14152 and 14153.
Document (PDF) (117 KB PDF).

September 01, 1994. Data Eval Rec. 8 Page(s).
Louis Rifici. KBN Engineering & Applied Sciences Inc..
Avian Reproduction Study. Species Tested: Bobwhite quail
MRID No. 421449-02.
Document (PDF) (655 KB PDF).

September 01, 1994. Data Eval Rec. 9 Page(s).
Michael Whitten. KBN Engineering for EEB.
Avian Reproduction Study. Species Tested: Mallard duck
MRID No. 421449-01.
Document (PDF) (720 KB PDF).

September 01, 1994. DER. 10 Page(s).
Darlene Lintott. for Ecological Effects Branch.
Mollusc 96-Hour Flow Through Shell Deposition Study
Species Tested: eastern oyster
Pages 6-9 removed, registration data. MRID 421449-05.
Document (PDF) (501 KB PDF).

September 01, 1994. DER. 17 Page(s).
William Rabert. for Ecological Effects Branch.
Study Type: 71-5(a) Avian Simulated Field Study (Large Pen)
Species Tested: Bobwhite quail
Pages 10-17 removed, registration data. MRID 421449-03.
Document (PDF) (883 KB PDF).

September 01, 1994. DER. 7 Page(s).
Darlene Lintott. for Ecological Effects Branch.
Estuarine shrimp Flow-Through Acute Toxicity Test
Species Tested: Mysid
Pages 5-6 removed, registrant data. MRID 421449-06.
Document (PDF) (364 KB PDF).

September 01, 1994. DER. 7 Page(s).
Darlene Lintott. for Ecological Effects Branch.
Study Type: Estuarine Fish Flow-Through Acute Toxicity Test
Species tested: Sheepshead Minnow
Pages 6-7 removed, registration data. MRID 421449-04.
Document (PDF) (385 KB PDF).

September 12, 1994. Memorandum. 2 Page(s).
Steven Knizner. Chemistry Branch.
Chlorpyrifos. DowElanco Response to Review of Confined Rotational Crop Study.
Reregistration Case No. 0100. Chemical No. 059101.
No MRID # DP Barcodes D206379 CBRS #14256.
Document (PDF) (95 KB PDF).

September 15, 1994. Memorandum. 131 Page(s).
Steven Knizner. Chemistry Branch II.
Chlorpyrifos. Product Chemistry Chapter and Residue Chemistry Chapter for the
Reregistration Eligibility Document. Reregistration Case No. 0100. Chemical No. 059101.
No MRID #. DP Barcodes D198040 and D203769. CBRS #13024 and 13809. (RED).
Document (PDF) (9836 KB PDF).

September 16, 1994. DER. 26 Page(s).
Stephanie Syslo. EFGWB/EFED.
Study 5; Chlorpyrifos; Emulsifiable Concentrate (EC).
Pages 8-26 removed, registration data. MRIDs 42924801, 40356608.
Document (PDF) (622 KB PDF).

October 06, 1994. Memorandum. 6 Page(s).
Stephanie Willett. Chemistry Branch.
PP No. 3F4266. Chlorpyrifos on Alfalfa. Request for Increased Tolerances.
D195526. CB No. 12624. MRID Nos. 429175-00, -01, -02.
Document (PDF) (553 KB PDF).

October 07, 1994. Memorandum. 8 Page(s).
Stephanie Willett. Chemistry Branch.
PP no. 3F4266. Chlorpyrifos on Alfalfa. Request for Increased Tolerances.
D195526. CB No. 12624. MRID Nos. 429175-00, -01, -02.
Document (PDF) (704 KB PDF).

November 16, 1994. Record. 7 Page(s).
Elizabeth Behl. Environmental Fate & Ground Water Branch.
6(a)2 action - reports of chlorpyrifos detections in wells,
ponds and cisterns from 1/1/92 thru 12/31/93. DowElanco; 062719-00047.
Document (PDF) (426 KB PDF).

November 23, 1994. Memorandum. 31 Page(s).
Stephanie Syslo. EFGWB/EFED.
Review and Screening of Environmental Fate Studies Submitted by Makhteshim
in Response to DCI for Chlorpyrifos. Pages 15-31 removed, registration data.
Page 11 removed, commercial/financial information.
MRIDs 421449-11, -12; 421449-15, -16.
Document (PDF) (957 KB PDF).

January 06, 1995. Memorandum. 13 Page(s).
Susan Makris. Toxicology Branch.
Chlorpyrifos (P.C. Code 059101) - Toxicology Data Review.
MRID No. 43685101. Tox Review No. 011381.
Document (PDF) (1398 KB PDF).
Attachment(s) Following:

December 01, 1992. Report.
Maria Muto. St. John's University.
Embryotoxicity and Neurotoxicity in Rats
Associated with Prenatal Exposure to Dursban.

December 30, 1994. Memorandum.
Susan Makris. Toxicology Branch.
Chlorpyrifos (P.C. Code 059101) - Toxicology Data Review.
Tox Review No. 011372.

*End of Attachments*

January 19, 1995. Memorandum. 37 Page(s).
Jerome Blondell. Occupational & Residential Exposure Branch.
Review of chlorpyrifos-associated cases of delayed neuropathy.
Document (PDF) (3203 KB PDF).

April 28, 1995. Record. 5 Page(s).
Henry Nelson. Envirnomental Fate & Ground Water Branch.
Review of protocol for conducting a small scale runoff study to evaluate
the effect of Vegatative Filter Strips in reducing chlorpyrifos runoff.
Document (PDF) (280 KB PDF).

June 12, 1995. Record. 6 Page(s).
Elizabeth Behl. Environmental Fate & Ground Water Branch.
Response to detections of chlorprifos in Indiana, Tennessee, Alabama and Pennsylvania.
MRID 436066-01, 436067-01.
Document (PDF) (425 KB PDF).

June 17, 1995. Memorandum. 29 Page(s).
David Jaquith. Occupational & Residential Exposure Branch.
Review of study measuring environmental levels of and exposure to Chlorpyrifos
following lawn care treatment. EPA Reg. No. 464-571.
Document (PDF) (1867 KB PDF).

July 28, 1995. Data Eval. Rec.. 118 Page(s).
William Rabert. Ecological Effects Branch.
Study Type: 72-5. Fish Full Life-Cycle Toxicity Test with the Fathead Minnow.
Pages 10-19 removed, registrant data. MRID 428344-01.
Document (PDF) (4834 KB PDF).

August 14, 1995. DER. 27 Page(s).
Stephanie Syslo. EFGWB/EFED.
Study 6; Chlorpyrifos; Emulsifiable Concentrate (EC). MRID No. 429248-02.
Registration Data information removed from pages 7-27.
Document (PDF) (577 KB PDF).

August 18, 1995. Memorandum. 43 Page(s).
David Jaquith. Occupational & Residential Exposure Branch.
Review of Study Measuring Indoor Levels of and Exposure to Chlorpyrifos
Following Carpet Treatment. Reg. No. 464-571.
Document (PDF) (2648 KB PDF).

January 24, 1996. Memorandum. 14 Page(s).
Virginia Dobozy. Registration & Special Review Section.
Analysis of Chlorpyrifos IDS Data for Domestic Animals.
Document (PDF) (1041 KB PDF).

February 06, 1996. Memorandum. 26 Page(s).
Mark Perry. Registration Support Branch.
EPA File Symbol: 51036-EUT. MRID No. 436332-04 & 09.
Document (PDF) (1384 KB PDF).

February 29, 1996. Memorandum. 8 Page(s).
George Ghali. Health Effects Division.
RfD/Peer Review Report of Chlorpyrifos...
Document (PDF) (848 KB PDF).

March 06, 1996. Memorandum. 24 Page(s).
Bruce Kitchens. Special Review & Registration Branch.
Agricultural exposure assessment and recommendations for the
reregistration eligibility decision document for chlorpyrifos.
MRID 429745-01, 431381-02, 430279-01.
Document (PDF) (1849 KB PDF).

April 29, 1996. Review. 4 Page(s).
Alan Levy. Toxicology Branch.
TOXICOLOGY ENDPOINT SELECTION DOCUMENT. Tox Review 013130.
Document (PDF) (116 KB PDF).

June 06, 1996. Memorandum. 5 Page(s).
S. Oonnithan. Registration Support Branch.
Review of Acute Toxicity Data for Precautionary labeling;
EPA ID No. 279-3134; Questor MUP Insecticide. MRID No. 439577-01.
Document (PDF) (245 KB PDF).

September 13, 1996. Memorandum. 35 Page(s).
Stephen Schaible. Science Analysis Branch.
Addendum to the Dietary Risk Assessment for the
Chlorpyrifos Reregistration Eligibility Document.
Document (PDF) (3139 KB PDF).

January 14, 1997. Memorandum. 70 Page(s).
Jerome Blondell. Occupational & Residential Exposure Branch.
Review of Chlorpyrifos Poisoning Data.
Document (PDF) (6687 KB PDF).

April 23, 1997. Memorandum. 3 Page(s).
David Jaquith. Occupational & Residential Exposure Branch.
Label Amendments for Dursban TC.
Document (PDF) (197 KB PDF).

July 29, 1997. Memorandum. 3 Page(s).
Jess Rowland. Health Effects Division.
Chlopyrifos - Report of the Risk Assessment Review Committee.
Document (PDF) (130 KB PDF).

December 20, 1997. Memorandum. 22 Page(s).
Masih Hashim. Technical Review Branch.
EPA Reg. No.: 62719-15. DP Barcode: D233219. Case No: 048009.
MRID Nos. 442091-01 through 442091-05.
Document (PDF) (2439 KB PDF).

February 02, 1998. Memorandum. 34 Page(s).
Jess Rowland. Health Effects Division.
Chlorpyrifos - FQPA Requirement - Report of the Hazard Identification
Assessment Committee. Tox review 012471.
Document (PDF) (2657 KB PDF).

May 19, 1998. Memorandum. 7 Page(s).
Leung Cheng. Health Effects Branch.
Chlorpyrifos. Case 0100. Results of the National Food Survey Conducted in 1993-1994.
MRID 43721601.
Document (PDF) (572 KB PDF).

August 21, 1998. DER. 34 Page(s).
Guy Beretich. Toxicology Branch (Dynamac).
Study Type: 83-6; Developmental Neurotoxicity Study of Chlorpyrifos
Administered Orally via Gavage to Crl:CD BR VAF/Plus Presumed Pregnant Rats
MRID 44556901.
Document (PDF) (3175 KB PDF).

October 14, 1998. DER. 17 Page(s).
Carol Forsyth. Toxicology Branch (Oak Ridge National).
Study Type: Special Study: Cholinesterase and Metabolite Determination - Rat
MRID 44648102.
Document (PDF) (1450 KB PDF).

December 07, 1998. DER. 14 Page(s).
H. Tim Borges. Oak Ridge National Lab for HED.
Study Type: Blood Time Course (Part A), Nonguideline. MRID 44648101.
Document (PDF) (958 KB PDF).

December 07, 1998. Memorandum. 20 Pages.
Jess Rowland. Hazard Identification Assessment Review Committee.
CHLROPYRIFOS - RE-EVALUATlON - Report of the Hazard Identification
Assessment Review Committee. Tox review No. 013004
Document (PDF) (1153 KB PDF).

December 07, 1998. Memorandum. 30 Page(s).
Jess Rowland. Hazard Identification Assessment Review Committee.
CHLROPYRIFOS - RE-EVALUATION - Report of the Hazard Identification
Assessment Review Committee. Tox Review 013004.
Document (PDF) (1746 KB PDF).

January 28, 1999. DER. 34 Page(s).
Susan Makris. Toxicology Branch I.
Devlelopmental Neurotoxicity Study - Rat; 83-6.
MRID Nos. 44556901 & 44661001. Tox Review No. 013081.
Document (PDF) (1821 KB PDF).

January 28, 1999. Memorandum. 56 Page(s).
Susan Makris. Toxicology Branch.
Chlorpyrifos (P.C. Code 059101) - Toxicology Data Review.
Pages 39-56 removed, registrant data.
MRID 44556901, 44661001 Tox Review No. 013081.
Document (PDF) (2103 KB PDF).
Attachment(s) Following:

November 13, 1998. DER.
Susan Makris. Toxicology Branch.
Chlorpyrifos: Study Type: 83-6; Developmental Neurotoxicity Study of
Chlorpyrifos Administered Orally via Gavage to Crl:CD BR VAF/Plus
Presumed Pregnant Rats. MRID No. 44556901. Tox Review No. 013081.

*End of Attachments*

April 15, 1999. Memorandum. 25 Page(s).
Deborah Smegal. Reregistration Branch, HED.
HED's Review of "Evaluation of Workers' Exposure to Chlorpyrifos During the
Use of Dursban Pro Insecticide Concentrate for Broadcast Turf Applications."
MRID 44729401.
Document (PDF) (1345 KB PDF).

April 16, 1999. Memorandum. 27 Page(s).
Jerome Blondell. Chemistry & Exposure Branch.
Chlorpyrifos incident review update, DP Barcode 254977. HED Review of
MRID nos. 43480001,44039901,44186301,44245801,1997 Epidemiology Blue
Ribbon Panel Report, and 1995 critique of EPA's review of neuropathy
allegations due to chlorpyrifos.
Document (PDF) (1236 KB PDF).

April 19, 1999. Memorandum. 23 Page(s).
Deborah Smegal. Reregistration Branch, HED.
HED's Review of "Determination of Exposure and Dose of General Pest Control
Operators to Chlorpyrifos During the Routine Applications of Dursban
Pro Insecticide to Cracks, Crevices and Spots."
MRID 44444801.
Document (PDF) (1101 KB PDF).

April 26, 1999. Memorandum. 3 Page(s).
Virginia Dobozy. Toxicology Branch II.
Update of Incident Data on Chlorpyrifos for Domestic Animals.
Document (PDF) (124 KB PDF).

April 29, 1999. Memorandum. 16 Page(s).
Deborah Smegal. Reregistration Branch, HED.
HED's Review of "Exposure to Chlorpyrifos While Applying a Ready to Use Formulation."
MRID 4473901.
Document (PDF) (747 KB PDF).

April 29, 1999. Memorandum. 21 Page(s).
Gary Bangs. Reregistration Branch, HED.
Review of "Evaluation of Workers Exposure to Chlorpyrifos During the Use of Dursban
TC Termiticide Concentrate for Post-Construction Termiticide Applications" -
MRID No. 44729402.
Document (PDF) (1222 KB PDF).

May 27, 1999. Memorandum. 55 Page(s).
Deborah Smegal. Reregistration Branch, HED.
Occupational/Residential Handler and Postapplication Residential Risk Assessment
for Chlorpyrifos. MRID: 40026001, 40094001, 43013501, 44167101, 44458201, 44444801,
44729401, 44729402, 44589001, 44739301.
Document (PDF) (3637 KB PDF).

June 30, 1999. Memorandum. 26 Page(s).
Jerome Blondell. Chemistry & Exposure Branch.
Chlorpyrifos incident review update, DP Barcode D257467, HED Review of
MRID Nos. 43480001,44039901,44186301,44245801,1997 Epidemiology Blue
Ribbon Panel Report, and 1995 critique of EPA's review of neuropathy
allegations due to chlorpyrifos.
Document (PDF) (1212 KB PDF).

July 23, 1999. Memorandum. 66 Page(s).
Deborah Smegal. Re-Registration Branch 3 HED.
Chlorpyrifos: HED Preliminary Risk Assessment for the Reregistration
Eligibility Decision (RED) Document. DP Barcode D257953. Tox Review 013611.
Document (PDF) (2765 KB PDF).

October 05, 1999. Memorandum. 55 Page(s).
Deborah Smegal. Reregistration Branch, HED.
Occupational/Residential Handler and Postapplication Residential Risk Assessment
for Chlorpyrifos. MRID: 40026001, 40094001, 43013501, 44167101, 44458201, 44444801,
44729401, 44729402, 44589001, 44739301.
Document (PDF) (3631 KB PDF).

March 03, 2000. Memorandum. 20 Page(s).
Susan Makris. Toxicology Branch.
Chlorpyrifos (P.C. Code 059101) - Toxicology Data Review. MRID 44787301
& unassigned, supplement 44556901 & 44661001. Tox Review No. 014014.
Document (PDF) (1219 KB PDF).

April 12, 2000. Memorandum. 35 Page(s).
Deborah Smegal. Reregistration Branch, HED.
Occupational/Residential Handler and Postapplication Residential/Non-Occupational
Risk Assessment for Chlorpyrifos. MRID: 40026001, 40094001, 43013501,
44167101, 44458201, 44444801, 44729401, 44729402, 44589001, 44739301.
Document (PDF) (2495 KB PDF).

April 18, 2000. Memorandum. 53 Page(s).
Deborah Smegal. Re-Registration Branch 3 HED.
Toxicology Chapter for Chlorpyrifos. DP Barcode D263892, Case 818975,
Submission S576466, PC Code 059101.
Document (PDF) (182 KB PDF).

April 20, 2000. Memorandum. 32 Page(s).
Jerome Blondell. Chemistry & Exposure Branch.
Chlorpyrifos incident review update, DP Barcode 263894, Chem. No. 059101, HED
Review of MRID nos. 43480001, 44039901 44186301, 44245801, 1997 Epidemiology
Panel Report, and 1995 critique of EPA's review of neuropathology allegations.
Document (PDF) (2026 KB PDF).
Attachment(s) Following:

February 03, 1999. Memorandum.
Jerome Blondell. Chemistry and Exposure Branch.
Reviews of submittals by Dow AgroSciences on chlorpyrifos.

*End of Attachments*

June 20, 2000. Memorandum. 16 Page(s).
Deborah Smegal. Reregistration Branch 3.
Update: Exposure Assessment for Chlorpyrifos Post Construction Termiticide Use;
DP Barcode D266827, Case 818975.
Document (PDF) (740 KB PDF).

June 20, 2000. Memorandum. 84 Page(s).
Deborah Smegal. Reregistration Branch, HED.
Occupational/Residential Handler and Postapplication Residential/Non-Occupational
Risk Assessment for Chlorpyrifos. MRID: 40026001, 40094001, 43013501,
44167101, 44458201, 44444801, 44729401, 44729402, 44589001, 44739301.
Document (PDF) (5673 KB PDF).

December 04, 2007. DER. 12 Pages.
David Soderberg. Reregistration Branch 3 HED.
Non Guideline Processing Study. Processed Food and Feed - Home Cooking
Studies in Various Foods. MRID No. 45619801. DP Barcode D282883.
Document (PDF) (428 KB PDF).

Publications | Glossary | A-Z Index | Jobs

Local Navigation

• Pesticides Home
• About Pesticides Home

  ---

• FOIA Home
• Basic Information
• Guide for FOIA Requesters
• Pesticide Information Resources
• Electronic Reading Room
• Disclosure of Studies
• Disclosure Limitations
• Fee Schedule
• Submit a Request

• EPA Home
• Privacy and Security Notice
• Contact Us