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• Chlorpyrifos (Pc Code 059101)

Index to Cleared Science Reviews
Chlorpyrifos (Pc Code 059101)

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Undated. Data Eval. Rec. 7 Pages.
Curt Lunchick. Exposure Assessment Branch.
Evaluation of Applicator Exposure and Work Environment
Impact Following Treatment of a Greenhouse with Dursban 50W.
Document (313 KB PDF).

Undated. Memorandum. 8 Pages.
John Quest. Toxicology Branch.
Attached Data Evaluation Record, Chlorpyrifos: Two-Year
Dietary Exposure Studies in Beagle Dogs.
Tox Review 003822 excerpt.
Document (462 KB PDF).

November 16, 1972. Letter. 42 Pages.
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 (2,814 KB PDF).

November 16, 1972. Review. 3 Pages.
Toxicology Branch.
Histopathological examinations were conducted on the tissues
of rats ... PP# 3F1306.
Accn. No. 00146519.
Tox review 000179 (pages 24, 25 & 26).
Document (148 KB PDF).

February 15, 1973. Review. 10 Pages.
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 (422 KB PDF).

May 18, 1973. Review. 2 Pages.
Ronald Ney. Efficacy & Ecological Effects Branch.
Evaluation of Environmental Data for Chlorpyrifos...
PP # 3F1370, Dow Chemical Co.
Document (87 KB PDF).

September 25, 1973. Review. 5 Pages.
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 (325 KB PDF).

November 1, 1973. Review. 6 Pages.
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 (425 KB PDF).

March 4, 1974. Review. 1 Page.
Ronald Ney. Efficacy & Ecological Effects Branch.
Environmental Chemistry Evaluation of Chlorpyrifos...
PP4F1445, 464-LNR
Submitted by Dow Chemical Nov. 14, 1973.
Document (45 KB PDF).

March 20, 1974. Review. 1 Page.
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 (49 KB PDF).

March 26, 1974. Review. 1 Page.
Ronald Ney. Efficacy & Ecological Effects Branch.
Environmental Chemistry Evaluation for Chlorpyrifos
[Lorsban, Dursban].
Document (32 KB PDF).

May 3, 1974. Memorandum. 12 Pages.
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 (903 KB PDF).

March 7, 1975. Review. 2 Pages.
William Bodee. Chemistry Branch.
PP #3F1370. Method tryout for the chlorpyrifos
metabolite 3,5,6-Trichloro-2-pyridinol (TCP) in bananas.
Document (118 KB PDF).

June 23, 1975. Review. 6 Pages.
Robert Coberly. Toxicology Branch.
Food Additive Regulation for Chlorpyrifos.
Inert ingredient information on page 4 is not included.
Document (266 KB PDF).

July 28, 1975. Memorandum. 8 Pages.
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 (851 KB PDF).

August 13, 1975. Review. 4 Pages.
Ronald Ney. Efficacy & Ecological Effects Branch.
File 464-LRT
new registration.
Document (206 KB PDF).

October 6, 1975. EEB Review. 2 Pages.
Ronald Ney. Efficacy & Ecological Effects Branch.
File PP 6F1673 EPA Reg. No. 464-448
Lorsban 4E
Registration cotton.
Document (85 KB PDF).

November 11, 1975. Memorandum. 2 Pages.
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 (98 KB PDF).

December 6, 1975. Review. 2 Pages.
R. W. Cook. Efficacy & Ecological Effects Branch.
Reg. No. 464-448; Petition PP6F1678
Lorsban 4E
'Applicant has amended the label...'.
Document (59 KB PDF).

February 5, 1976. EEB Review. 5 Pages.
Bipin Gandhi. Efficacy & Ecological Effects Branch.
Removal or Rotational crop restrictions.
Document (227 KB PDF).

February 5, 1976. Review. 4 Pages.
Ronald Ney. Efficacy and Ecological Effects Branch.
File 464, 448, 499, 523
Chlorpyrifos
Dow Chemical USA
Removal of Rotational crop restrictions.
Document (226 KB PDF).

April 1, 1976. Review. 4 Pages.
Ralph Wright. Efficacy and Ecological Effects Branch.
Killmaster II, New Product.
Document (231 KB PDF).

May 20, 1976. Review. 3 Pages.
Ralph Wright. Efficacy and Ecological Effects Branch.
Killmaster II, New Product.
Document (139 KB PDF).

May 25, 1976. Review. 5 Pages.
Edwin Budd. Toxicology Branch.
Registration Human Safety Review for Killmaster II.
Manufacturing process information on pages 4-5 is not
included.
Document (878 KB PDF).

August 12, 1976. Memorandum. 3 Pages.
Edwin Budd. Toxicology Branch.
Application for New Registration, Killmaster II, EPA No.
26693-E.
Document (236 KB PDF).

October 12, 1976. Review. 8 Pages.
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 (637 KB PDF).

October 15, 1976. Memorandum. 3 Pages.
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 (203 KB PDF).

March 14, 1977. Review. 10 Pages.
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 (872 KB PDF).

April 21, 1977. Review. 3 Pages.
Ralph Wright. Efficacy and Ecological Effects Branch.
Killmaster II 12-Month Residual Claim - New Pests.
Document (335 KB PDF).

June 7, 1977. Memorandum. 12 Pages.
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 (472 KB PDF).

June 7, 1977. Review. 5 Pages.
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 (194 KB PDF).

September 27, 1977. Review. 8 Pages.
Ronald Ney. Efficacy and Ecological Effects Branch.
Reg. No. 464-448
PP 6F1786
Lorsban
new use on sweet potatoes.
Document (443 KB PDF).

September 29, 1977. Review. 2 Pages.
Ronald Ney. Efficacy & Ecological Effects Branch.
Reg. No. 464-448, 449 and 523
Explanation letter of phytotoxicity question from Efficacy.
Document (73 KB PDF).

October 17, 1977. Review. 8 Pages.
Ronald Ney. Efficacy & Ecological Effects Branch.
Reg. No. 464-448
New use on sweet potatoes.
Document (467 KB PDF).

November 1, 1977. Review. 7 Pages.
Ronald Ney. Efficacy & Ecological Effects Branch.
Reg. No. 464-449, 523
New use - field corn and sugarbeets.
Document (451 KB PDF).

November 11, 1977. Review. 2 Pages.
Ralph Wright. Efficacy and Ecological Effects Branch.
Killmaster II Food Additive Tolerance.
Inert ingredient information on page 2 is not included.
Document (217 KB PDF).

July 7, 1978. Review. 2 Pages.
Samuel Creeger. Exposure Assessment Branch.
Reg. No. 464-449, 523
use on sugarbeets - resubmission.
Document (96 KB PDF).

July 26, 1978. Review. 6 Pages.
Gunter Zweig. Environmental Fate Branch.
Reg. No. 464-448
PP No. 6F1830, 6F1777
*resubmission of amended registration application -
sorghum (6F1830)
Accession No. 096642.
Document (356 KB PDF).

August 3, 1978. Review. 2 Pages.
Ralph Wright. Insecticide-Rodenticide Branch.
Efficacy Review of Nozzle Clogging and Tank Cleaning Data.
Document (83 KB PDF).

August 11, 1978. Memorandum. 3 Pages.
H.W. Spencer. Toxicology Branch.
Amended registration of EPA No. 7001-148, Dursban Insect
Spray; Caswell No. 219AA.
Tox Review No. 000208.
Document (198 KB PDF).

August 15, 1978. Memorandum. 2 Pages.
Roland Gessert. Toxicology Branch.
Toxicity of Dog and Cat Flea Collars on Exposed Animals and
Humans; Inquiry from Florida Student.
Document (105 KB PDF).

September 1, 1978. Letter. 7 Pages.
Albin B. Kocialski. Toxicology Branch.
The toxicology data found here is basically a presentation
of previously summarized data on Dursban.....
Tox review 000191.
Document (547 KB PDF).

September 25, 1978. Review. 1 Page.
Alfred Smith. Residue Chemistry Branch.
PP# 6F1830: Chlorpyrifos on Sorghum.
Amendment of 5/31/78.
Document (100 KB PDF).

October 31, 1978. Memorandum. 2 Pages.
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 (123 KB PDF).

November 13, 1978. Memorandum. 4 Pages.
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 (418 KB PDF).

March 23, 1979. Review. 2 Pages.
Alfred Smith. Residue Chemistry Branch.
PP# 6F1830 FAP# 9H5203: Chlorpyrifos in Sorghum and milling
fractions. Amendment of 12/1/78.
Document (118 KB PDF).

June 12, 1979. FR Notice. 16 Pages.
Edwin Johnson. Office of Pesticide Programs.
Title 40--Protection of the Environment
Chlorpyrifos
PP 6F1830/R207
Final Rule.
Document (1,295 KB PDF).

January 21, 1980. Review. 5 Pages.
Gunter Zweig. Environmental Fate Branch.
Reg./File No.: 464-LLE, Lorsban 50W Wettable Powder...
464-448; 464-523; 464-547
Conditional uses.
Document (189 KB PDF).

March 25, 1980. Review. 2 Pages.
Gunter Zweig. Environmental Fate Branch.
Reg./File No. 464-448; 464-523
Added use on tobacco. Incremental risk.
Document (54 KB PDF).

April 29, 1980. Memorandum. 10 Pages.
Elizabeth Leovey. 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 (872 KB PDF).

May 5, 1980. Review. 2 Pages.
Joseph Reinert. Environmental Fate Branch.
Reg. No. 464-448 464-523
Add use of Lorsban on tobacco.
Document (109 KB PDF).

May 16, 1980. Memorandum. 3 Pages.
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 (322 KB PDF).

September 10, 1980. Review. 2 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No. 464-448, 464-523
'The registrant is requesting amended registrations...
for control of root maggots...'.
Document (111 KB PDF).

December 23, 1980. Memorandum. 5 Pages.
Elizabeth Leovey. Residue Chemistry Branch.
PP#9F2270. Chlorpyrifos in or on Soybeans.
Amendment of 10/14/80.
Document (1,897 KB PDF).

January 15, 1981. Memorandum. 2 Pages.
Byron Backus. Insecticide Rodenticide Branch.
EPA File Symbol: 464-LAE Dursban TC Termiticide Concentrate
Caswell #219AA.
Document (135 KB PDF).

January 15, 1981. Review. 7 Pages.
Lynn Bradley. Residue Chemistry Branch.
PP#1G2438 FAP#1H5284. Chlorpyrifos on wheat. Evaluation of
analytical methods and residue data.
Document (582 KB PDF).

February 17, 1981. Letter. 2 Pages.
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 (249 KB PDF).

March 6, 1981. Memorandum. 4 Pages.
William Dykstra. Toxicology Branch.
EPA Reg. # 464-EUP-RV; PP#1G2438; Chlorpyrifos in or on
Wheat.
Accession 099714, 099715.
Document (214 KB PDF).

April 6, 1981. Review. 3 Pages.
Lynn Bradley. Residue Chemistry Branch.
PP#1G2438 and FAP#1H5284. Chlorpyrifos on Wheat. Amendment
of 3/25/81.
Document (415 KB PDF).

April 24, 1981. Review. 2 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No. 464-448
use on tomatoes.
Document (82 KB PDF).

May 18, 1981. Memorandum. 1 Page.
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 (68 KB PDF).

June 12, 1981. Memorandum. 3 Pages.
Lynn Bradley. Residue Chemistry Branch.
464-EUP-AI. Chlorpyrifos on lemons and oranges.
Document (248 KB PDF).

June 24, 1981. Memorandum. 5 Pages.
Elizabeth Leovey. Residue Chemistry Branch.
PP# 9F2270 Chlorpyrifos in or on soybeans
Amendments of March 30, 1981 and May 4, 1981.
Document (844 KB PDF).

June 29, 1981. Review. 2 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No. 464-523
Crop rotation protocol.
Document (86 KB PDF).

July 6, 1981. Review. 8 Pages.
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 (185 KB PDF).

July 28, 1981. Memorandum. 4 Pages.
Lynn Bradley. Residue Chemistry Branch.
81-OH-6. Section 18 exemption for chlorpyrifos on
soybeans in Ohio.
Document (268 KB PDF).

August 28, 1981. Memorandum. 4 Pages.
B.T. Backus. Insecticide-Rodenticide Branch.
EPA File Symbol 464-LTR. Dursban XP-4 Insecticide.
Caswell #219AA.
Document (240 KB PDF).

October 30, 1981. Review. 2 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448
Add alfalfa to label.
Document (88 KB PDF).

November 6, 1981. Memorandum. 7 Pages.
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 (567 KB PDF).

December 2, 1981. Memorandum. 5 Pages.
William Dykstra. Toxicology Branch.
EPA Reg. # 464-448; 464-523; PP#2F2588; 2H5326; Chlorpyrifos
in/on Sunflowers
Accession # 070408.
Document (265 KB PDF).

December 2, 1981. Review. 9 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448, 464-523
Add soybeans to label.
Document (418 KB PDF).

December 7, 1981. Review. 6 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448, 464-523
Adding sunflowers to labels.
Document (874 KB PDF).

December 18, 1981. Memorandum. 3 Pages.
K.H. Arne. Residue Chemistry Branch.
PP#9F2270. Chlorpyrifos on soybeans.
Amendment of 10/22/81.
Document (151 KB PDF).

January 13, 1982. Review. 6 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448
Protocol - field monitoring study
Pages 3-6 removed, registrant data.
Document (145 KB PDF).

January 29, 1982. Memorandum. 10 Pages.
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 (1,210 KB PDF).

February 19, 1982. Memorandum. 2 Pages.
Linda Propst. Residue Chemistry Branch.
PP#9G2168. Chlorpyrifos on lemons and oranges.
Document (162 KB PDF).

February 22, 1982. Memorandum. 4 Pages.
William Dykstra. Toxicology Branch.
EPA Reg. # 464-LLE; PP#2F2560, 2H5331; Chlorpyrifos in/on
Apples
Accession # 070576.
Document (258 KB PDF).

March 4, 1982. Memorandum. 10 Pages.
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 (1,088 KB PDF).

March 5, 1982. Memorandum. 8 Pages.
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 (858 KB PDF).

March 11, 1982. Memorandum. 1 Page.
Linda Probst. Residue Chemistry Branch.
PP#1G2438 and FAP#1H5284. Chlorpyrifos on wheat.
Amended EUP.
Document (75 KB PDF).

March 16, 1982. Review. 5 Pages.
William Dykstra. Toxicology Branch.
Petition No. 1E2529
RAC(s) - tolerances: 2.0 ppm in/on cherries.
Document (276 KB PDF).

March 24, 1982. Memorandum. 9 Pages.
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 (998 KB PDF).

March 25, 1982. Memorandum. 9 Pages.
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 (945 KB PDF).

March 29, 1982. Memorandum. 1 Page.
K.H. Arne. Residue Chemistry Branch.
PP#2F2588/2H5326 Chlorpyrifos on sunflowers
Amendment of 3/19/82.
Document (63 KB PDF).

April 9, 1982. Memorandum. 2 Pages.
Karl Arne. Residue Chemistry Branch.
Memo of conference 3/25/82. PP1F2575 Chlorpyrifos on Citrus.
Document (156 KB PDF).

May 3, 1982. Memorandum. 2 Pages.
Karl Arne. Residue Chemistry Branch.
PP#1F2575/FAP#1H5322 Chlorpyrifos on citrus. Amendment
of 3/29/82.
Document (209 KB PDF).

May 3, 1982. Review. 11 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No 464-448. Review of runoff protocol.
Pages 3-11 removed, registration data.
Document (112 KB PDF).

May 13, 1982. Review. 17 Pages.
Willa Garner. Environmental Fate Branch.
Use pattern for EEC Calculations: Soybeans and alfalfa.
Document (869 KB PDF).

May 25, 1982. Memorandum. 2 Pages.
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 (191 KB PDF).

June 3, 1982. Review. 6 Pages.
M. Nelson. Residue Chemistry Branch.
Petitioner: IR-4 and Ag. Exp. Stn of CA
Petition No: 2E2668
figs @ 0.1 ppm.
Document (631 KB PDF).

June 22, 1982. Review. 4 Pages.
Willa Garner. Environmental Fate Branch.
Reg./File No 2E2682; Use in cranberries.
Document (145 KB PDF).

July 6, 1982. Memorandum. 3 Pages.
K. H. Arne. Residue Chemistry Branch.
PP#1F2620/FAP2H5331: Chlorpyrifos on apples.
Amendment dated 12-11-81.
Document (329 KB PDF).

July 7, 1982. Review. 3 Pages.
Samuel Creeger. Environmental Fate Branch.
Reg./File No 464-448. Add new use - sugar beets.
Document (137 KB PDF).

July 8, 1982. Memorandum. 7 Pages.
R. W. Storherr. Residue Chemistry Branch.
PP#2E2644. Chlorpyrifos in or on Asparagus.
Document (735 KB PDF).

July 15, 1982. Review. 6 Pages.
Jesse Mayes. Residue Chemistry Branch.
Petitioner: IR-4 and Ag Exp Station of MA, NJ & WA
Petition No: 2E2682
Cranberries @ 1 ppm.
Document (731 KB PDF).

August 1, 1982. Report. 79 Pages.
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 (5,888 KB PDF).

August 2, 1982. Memorandum. 4 Pages.
Edward Zager. Residue Chemistry Branch.
EPA Registration No. 464-448. Chlorpyrifos on Corn.
Document (368 KB PDF).

October 6, 1982. Memorandum. 3 Pages.
K. H. Arne. Residue Chemistry Branch.
PP#1F2620/2H5331. Chlorpyrifos on apples. Amendment
of 8/11/82.
Document (318 KB PDF).

October 29, 1982. Memorandum. 2 Pages.
K. H. Arne. Residue Chemistry Branch.
PP#2E2644 Chlorpyrifos on asparagus. Amendment of 9/15/82.
Document (230 KB PDF).

November 15, 1982. Memorandum. 5 Pages.
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 (327 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.

November 19, 1982. Memorandum. 3 Pages.
Edward Zager. Residue Chemistry Branch.
EPA Registration No. 464-448. Chlorpyrifos on Corn,
Sprinkler Irrigation applications.
Document (307 KB PDF).

November 22, 1982. Memorandum. 4 Pages.
Edward Zager. Residue Chemistry Branch.
EPA Registration No. 464-448. Chlorpyrifos on corn.
Document (455 KB PDF).

December 3, 1982. Memorandum. 3 Pages.
K. H. Arne. Residue Chemistry Branch.
PP#1F2620/2H5331 Chlorpyrifos on apples.
Amendment of 10/19/82.
Document (320 KB PDF).

December 3, 1982. Memorandum. 4 Pages.
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 (620 KB PDF).

December 15, 1982. Memorandum. 3 Pages.
Edward Zager. Residue Chemistry Branch.
EPA Reg. Nos. 464-448 and 464-532. Chlorpyrifos
on sorghum.
Document (405 KB PDF).

January 4, 1983. Memorandum. 8 Pages.
Jesse 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 (3,177 KB PDF).

January 7, 1983. Memorandum. 2 Pages.
B.T. Backus. Insecticide-Rodenticide Branch.
EPA Reg. No. 26693-2 Killmaster II, Caswell #219AA.
Document (109 KB PDF).

January 11, 1983. Review. 7 Pages.
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 (360 KB PDF).

February 2, 1983. Review. 3 Pages.
Emil Regelman. Environmental Fate Branch.
Application for registration of new use on grapes.
Reg./File No 464-448.
Document (109 KB PDF).

February 18, 1983. Review. 2 Pages.
Joseph Reinert. Exposure Assessment Branch.
Reg./File No 464-562. Add plenum houses to label.
Document (100 KB PDF).

March 2, 1983. Memorandum. 2 Pages.
Edward Zager. Residue Chemistry Branch.
EPA Reg. Nos. 464-448 and 464-532. Chlorpyrifos on Tobacco.
Document (141 KB PDF).

April 1, 1983. Memorandum. 5 Pages.
Orville Paynter. Toxicology Branch.
PP#3E2819: Petition for the Establishment of Additional
Chlorpyrifos Tolerances on Brassica Leafy Vegetables.
Document (255 KB PDF).

April 4, 1983. Memorandum. 2 Pages.
Andrew Rathman. Residue Chemistry Branch.
Dursban (Chlorpyrifos) protocol for use in food
handling establishments.
Document (173 KB PDF).

April 13, 1983. Memorandum. 3 Pages.
A. R. Rathman. Residue Chemistry Branch.
EPA Registration No. 464-448. Amended registration
for chlorpyrifos on citrus.
Document (277 KB PDF).

May 2, 1983. Memorandum. 2 Pages.
Andrew Rathman. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended registration for
chlorpyrifos on corn.
Document (214 KB PDF).

May 4, 1983. Review. 2 Pages.
Richard Moraski. Exposure Assessment Branch.
Reg./File No 464-448. Label Amendment - Use on grapes.
Document (94 KB PDF).

May 17, 1983. Review. 4 Pages.
Richard Moraski. Exposure Assessment Branch.
Label Amendment: Cherries, Figs and Cranberries.
Reg./File No 464-448.
Document (229 KB PDF).

June 8, 1983. Memorandum. 8 Pages.
Jesse Mayes. Residue Chemistry Branch.
PP#3E2819. Chlorpyrifos in or on the crop group brassica
leafy vegetables. Evaluation of residue data and analytical
methodology.
Document (851 KB PDF).

July 6, 1983. Memorandum. 2 Pages.
Edward Zager. Residue Chemistry Branch.
TX 830005. Section 24(c) registration for the use of
chlorpyrifos on grain sorghum in Texas.
Document (178 KB PDF).

July 7, 1983. Memorandum. 2 Pages.
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 (121 KB PDF).

July 14, 1983. Memorandum. 2 Pages.
Karl Arne. Residue Chemistry Branch.
PP#2E2644 Chlorpyrifos on asparagus. Amendment of 3/22/83.
Document (168 KB PDF).

July 22, 1983. Memorandum. 8 Pages.
R. W. Cook. Residue Chemistry Branch.
PP3E2872/FAP3H5393: Chlorpyrifos in or on Grapes.
Evaluation of analytical methods and residue data.
Document (895 KB PDF).

August 12, 1983. Memorandum. 3 Pages.
Linda Propst. Residue Chemistry Branch.
Reg. No. 602-GNU. Chlorpyrifos on beef cattle,
hogs, goats, horses and sheep.
Document (367 KB PDF).

August 24, 1983. Review. 6 Pages.
K. Arne. Residue Chemistry Branch.
3E2886. Petition review for chlorpyrifos on mushrooms.
Document (3,256 KB PDF).

September 2, 1983. Memorandum. 2 Pages.
Linda Propost. Residue Chemistry Branch.
Reg. Nos. 464-448 and 464-523. Chlorpyrifos on onions
(dry bulb).
Document (226 KB PDF).

September 8, 1983. Memorandum. 32 Pages.
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 (3,850 KB PDF).

September 19, 1983. Memorandum. 1 Page.
Karl H. Arne. Residue Chemistry Branch.
PP#2E2644. Chlorpyrifos on asparagus. Amendment of 1/20/83.
Document (113 KB PDF).

September 20, 1983. Review. 10 Pages.
Richard Moraski. Exposure Assessment Branch.
Reg./File No 464-562. Additional use in Plenum Houses.
Document (842 KB PDF).

September 29, 1983. Memorandum. 2 Pages.
Karl Arne. Residue Chemistry Branch.
3E2886 Chlorpyrifos on mushrooms. Amendment of
8/26/83.
Document (172 KB PDF).

October 25, 1983. Review. 2 Pages.
Richard Moraski. Exposure Assessment Branch.
Reg./File No 464-448. Label Amendment - Add use on wheat.
Document (96 KB PDF).

October 28, 1983. Memorandum. 2 Pages.
Jesse Mayes. Residue Chemistry Branch.
PP#3E2819. Chlorpyrifos in or on the crop group
brassica leafy vegetables. Amendment of 7/13/83.
Document (208 KB PDF).

November 7, 1983. Memorandum. 3 Pages.
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 (381 KB PDF).

November 18, 1983. Memorandum. 2 Pages.
Linda Propst. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended regsitrations for
chlorpyrifos on alfalfa.
Document (343 KB PDF).

November 21, 1983. Memorandum. 7 Pages.
Karl Arne. Residue Chemistry Branch.
FAP#1H5295 Chlorpyrifos on tomatoes. Amendment of 8/31/83.
Document (1,018 KB PDF).

December 6, 1983. Memorandum. 2 Pages.
B.T. Backus. Insecticide-Rodenticide Branch.
EPA Reg. No. 26693-2 Killmaster II, Caswell #219AA.
Document (108 KB PDF).

December 6, 1983. Memorandum. 3 Pages.
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 (565 KB PDF).

December 8, 1983. Review. 4 Pages.
Samuel Creeger. Exposure Assessment Branch.
Data to support label amendment: use in plenum houses.
EPA Reg. No. 464-562.
Document (218 KB PDF).

January 9, 1984. Review. 12 Pages.
Carolyn Offutt. Exposure Assessment Branch.
Reg./File No 464-448. EEC on wheat.
Document (558 KB PDF).

January 20, 1984. Memorandum. 8 Pages.
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 (1,693 KB PDF).

January 24, 1984. Memorandum. 6 Pages.
Karl Arne. Residue Chemistry Branch.
PP#3F2884/FAP#3H5396: Chlorpyrifos on several commodities.
Ammendment of 12-15-83.
Document (2,179 KB PDF).

January 31, 1984. Review. 11 Pages.
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-448 and 464-552
ad use on filberts and pecans.
Document (1,687 KB PDF).

February 2, 1984. Memorandum. 2 Pages.
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 (385 KB PDF).

February 2, 1984. Review. 18 Pages.
Samuel Creeger. Exposure Assessment Branch.
Review data submitted to satisfy soil photolysis.
Pages 7-18 removed, registration data.
Document (452 KB PDF).

February 6, 1984. Memorandum. 3 Pages.
R. W. Cook. Residue Chemistry Branch.
PP3F2872/FAP3H5393: Chlorpyrifos in or on Grapes.
Amendment of 10/17/83.
Acc. No. 072086.
Document (436 KB PDF).

February 14, 1984. Memorandum. 3 Pages.
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 (589 KB PDF).

March 6, 1984. Memorandum. 3 Pages.
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 (165 KB PDF).

March 13, 1984. Memorandum. 2 Pages.
Richard Loranger. Residue Chemistry Branch.
EPA Reg. No. 464-448. Protocols for chlorpyrifos
studies on corn and alfalfa.
Document (434 KB PDF).

March 19, 1984. Memorandum. 1 Page.
Karl Arne. Residue Chemistry Branch.
FAP#1H5295: Chlorpyrifos on tomatoes. Amendment of 1/30/84.
Document (228 KB PDF).

April 3, 1984. Memorandum. 3 Pages.
Jesse Mayes. Residue Chemistry Branch.
PP#3E2819. (No Accession number). Chlorpyrifos in or on
the crop brassica leafy vegetables. Amendment of
2/1/84.
Document (804 KB PDF).

April 16, 1984. Review. 7 Pages.
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-448 and -523. Add use in citrus orchards.
Document (562 KB PDF).

April 17, 1984. Review. 4 Pages.
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-448. Add use on asparagus.
Document (671 KB PDF).

April 24, 1984. Data Eval. Rec.. 12 Pages.
John Quest. Toxicology Branch.
Chlorpyrifos (Dowco 179) 2-Year Chronic Toxicity
Oncogenicity Feeding Study - Rats.
MRID 00081270
Tox review 003822 (Pages 44-55).
Document (879 KB PDF).

April 24, 1984. Memorandum. 8 Pages.
Linda Kutney. Residue Chemistry Branch.
PP#4F3062. Chlorpyrifos on Stone Fruit. Evaluation
of analytical data and residue data.
(Accession No. 072408).
Document (542 KB PDF).

May 11, 1984. Memorandum. 4 Pages.
Lynn 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 (2,210 KB PDF).

May 11, 1984. Memorandum. 3 Pages.
Lynn Bradley. Residue Chemistry Branch.
Reg. Nos. 464-448, -523. Chlorpyrifos on citrus
orchard floors. (Accession Nos. 252500 and 252499).
Document (1,433 KB PDF).

May 15, 1984. Review. 5 Pages.
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-552. Add stone fruit to label.
Document (580 KB PDF).

May 18, 1984. Memorandum. 1 Page.
William Burnam. Toxicology Branch.
Chlorpyrifos Mouse Oncogenicity Study.
Document (72 KB PDF).

May 18, 1984. Memorandum. 3 Pages.
Gary Burin. Toxicology Branch.
Review of Human Cholinesterase Study
(pages 23-25 of Tox review 003822).
Document (342 KB PDF).

May 18, 1984. Memorandum. 5 Pages.
Gary Burin. Toxicology Branch.
Chlorpyrifos Cholinesterase Studies in the Rat and in
Man. (pages 31-35 of Tox review 003822).
Document (588 KB PDF).

May 23, 1984. Memorandum. 91 Pages.
William Burnam. Toxicology Branch.
Chlorpyrifos Registration Standard
Tox review 003822.
Document (8,363 KB PDF).

June 11, 1984. Memorandum. 2 Pages.
Kenneth Dockter. Residue Chemistry Branch.
464-EUP-64. Chlorpyrifos on wheat. Revision of EUP
program.
Document (455 KB PDF).

June 18, 1984. Review. 4 Pages.
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 (243 KB PDF).

July 3, 1984. Memorandum. 2 Pages.
Linda Probst. Residue Chemistry Branch.
EPA Reg. Nos. 464-448 and 464-523. Chlorpyrifos on
onions. Accession Nos. 072613 and 072597.
Document (576 KB PDF).

July 3, 1984. Memorandum. 2 Pages.
Linda Probst. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended registration for
chlorpyrifos on alfalfa.
Document (367 KB PDF).

August 6, 1984. Review. 6 Pages.
Joseph Reinert. Exposure Assessment Branch.
Review protocol for indoor air monitoring.
Document (392 KB PDF).

August 16, 1984. Memorandum. 3 Pages.
Sami Malak. Residue Chemistry Branch.
EPA Reg. No. 464-448. Amended registration of
chlorpyrifos (Lorsban 4E) on citrus. Accession
No. 253677.
Document (636 KB PDF).

August 29, 1984. Review. 2 Pages.
Norman Cook. Ecological Effects Branch.
Review modeling the runoff and behavior of chlorpyrifos
in a terrestrial-aquatic watershed.
Document (124 KB PDF).

September 6, 1984. Review. 6 Pages.
Joseph C. Reinert. Exposure Assessment Branch.
Reg./File No 464-590.
Applicator exposure study greenhouse use.
Document (519 KB PDF).

September 11, 1984. Review. 23 Pages.
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 (899 KB PDF).

September 19, 1984. Memorandum. 3 Pages.
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 (1,250 KB PDF).

October 1, 1984. Review. 2 Pages.
Carolyn Offutt. Exposure Assessment Branch.
EEC Review of Runoff and Water Quality.
Reg./File No 464-448 & 464-523.
Document (130 KB PDF).

October 1, 1984. Review. 4 Pages.
Carolyn Offutt. Exposure Assessment Branch.
EEC Review of runoff and water quality.
Reg./File No 464-448 & 464-523.
Document (238 KB PDF).

November 15, 1984. Review. 16 Pages.
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 (317 KB PDF).

December 27, 1984. Memorandum. 1 Page.
Frank Boyd. Residue Chemistry Branch.
PP#4F2999. Chlorpyrifos in or on Tree Nuts. Amendment
of 12/13/84. Accession No.: None.
Document (261 KB PDF).

January 9, 1985. Memorandum. 4 Pages.
Leung Cheng. Residue Chemistry Branch.
EPA Reg No 464-448. Chlorpyrifos on Tobacco:
Amended Registration. Accession Numbers
255341 and 255342.
Document (2,102 KB PDF).

January 26, 1985. Review. 4 Pages.
Joseph Reinert. Exposure Assessment Branch.
Reg. No.: 49244-1 and 49244-2. Exposure Data.
Document (279 KB PDF).

January 31, 1985. Memorandum. 2 Pages.
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 (841 KB PDF).

February 21, 1985. Memorandum. 2 Pages.
Lynn Bradley. Residue Chemistry Branch.
Chlorpyrifos Metabolism Study--Protocol for
Dermal Application to Sheep.
No Accession Number. RCB # 581.
Document (451 KB PDF).

March 8, 1985. Memorandum. 2 Pages.
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 (535 KB PDF).

March 11, 1985. Review. 6 Pages.
Samuel Creeger. Exposure Assessment Branch.
Reg./File No 464-358. Response to prev. review.
Pages 5,6 removed, registration data.
Acc. # 254395.
Document (211 KB PDF).

March 20, 1985. Review. 4 Pages.
Joseph Reinert. Exposure Assessment Branch.
Reg./File 464-562. Review of Indoor Air Monitoring Protocol.
Document (223 KB PDF).

March 25, 1985. Memorandum. 15 Pages.
Richard Loranger. Residue Chemistry Branch.
Chlorpyrifos registration standard. Dow's response
to residue chemistry data gaps. Accession Number
256045. [RCB No. 501].
Document (4,579 KB PDF).

April 15, 1985. Memorandum. 11 Pages.
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 (3,092 KB PDF).

April 25, 1985. Review. 3 Pages.
John Jordan. Exposure Assessment Branch.
Response to Registration Standard - Rotation Crop Studies
Action 660.
Document (210 KB PDF).

May 6, 1985. Memorandum. 2 Pages.
Karl Arne. Residue Chemistry Branch.
PP#3F2884/FAP#3H5396; Chlorpyrifos and its ADI problems.
Document (311 KB PDF).

May 9, 1985. Review. 4 Pages.
Carolyn Offutt. Exposure Assessment Branch.
Review of a protocol to gather reentry data
for chlorpyrifos on grass/turf.
Reg./File No 464-524.
Document (210 KB PDF).

May 31, 1985. Memorandum. 3 Pages.
Sami Malak. Residue Chemistry Branch.
EPA Registration No. 464-448. Chlorpyrifos - Amended
Use on Alfalfa. Accession #256639. RCB #1004.
Document (513 KB PDF).

June 21, 1985. Review. 6 Pages.
Joseph Reinert. Exposure Assessment Branch.
Reg. No. 464-404. Exposure Protocol.
Document (487 KB PDF).

July 3, 1985. Review. 4 Pages.
Carolyn Offutt. Exposure Assessment Branch.
Reg./File 464-448 and -523. Evaluate runoff data for citrus.
Document (293 KB PDF).

July 15, 1985. Memorandum. 13 Pages.
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 (1,008 KB PDF).

July 15, 1985. Memorandum. 13 Pages.
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 (3,354 KB PDF).

August 26, 1985. Memorandum. 8 Pages.
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 (608 KB PDF).

September 9, 1985. Memorandum. 10 Pages.
Byron Backus. Toxicology Branch.
3.0% Chlorpyrifos Cat Collar.
Cholinesterase (collar exposure) - cat. Acc. 258494.
Tox review 004646.
Document (710 KB PDF).

September 11, 1985. Memorandum. 10 Pages.
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 (2,222 KB PDF).
Attachment(s) following:

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

September 11, 1985. Memorandum. 10 Pages.
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 (2,006 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. 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, manufacturing process, quality control proc. info.

September 11, 1985. Memorandum. 14 Pages.
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 (1,903 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, manufacturing process, quality control.

September 11, 1985. Memorandum. 10 Pages.
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 (1,877 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.

September 11, 1985. Memorandum. 12 Pages.
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 (1,982 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, manufacturing process, quality control info.

September 19, 1985. Memorandum. 6 Pages.
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 (1,015 KB PDF).

September 25, 1985. Memorandum. 10 Pages.
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 (1,695 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
conttrol procedure info pages 3 and 4 is not included.
Page 8 removed- confidential statement of formula. Pages
9-10 removed- manufacturing process, quality control info.

September 25, 1985. Memorandum. 11 Pages.
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 (1,694 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.

September 27, 1985. Memorandum. 10 Pages.
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 (1,276 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.

September 27, 1985. Memorandum. 11 Pages.
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 (1,556 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).

October 1, 1985. Memorandum. 7 Pages.
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 (608 KB PDF).

October 10, 1985. Memorandum. 8 Pages.
D. Stephen Saunders Jr. Toxicology Branch.
Supplement to Two-Year Chronic Feeding Study in Dogs With
Chlorpyrifos. EPA ID No. 464-558. Acc 257601.
Tox review 004712.
Document (743 KB PDF).

October 18, 1985. Memorandum. 14 Pages.
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 (896 KB PDF).

November 6, 1985. Memorandum. 2 Pages.
Linda Probst. 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 (395 KB PDF).

November 6, 1985. Memorandum. 5 Pages.
Allan Reiter. Residue Chemistry Branch.
EPA Regis. No. 2935-UEL, Amended Registration
Chlorpyrifos on Corn, Beets & Almonds.
[No Access. no.; RCB #1242].
Document (941 KB PDF).

November 16, 1985. Memorandum. 2 Pages.
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 (96 KB PDF).

December 11, 1985. Memorandum. 17 Pages.
D. Steven 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 (466 KB PDF).

January 24, 1986. Review. 18 Pages.
Samuel Creeger. Exposure Assessment Branch.
Reevaluation of photolysis on soil study for registration.
Pages 5-11 removed, registration data.
Document (755 KB PDF).

February 19, 1986. Memorandum. 3 Pages.
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 (162 KB PDF).

February 24, 1986. Memorandum. 3 Pages.
Linda Propst. Residue Chemistry Branch.
2935-UEA. Lorsban 30 Flowable. Seed Treatment
Registration on Delinted Cottonseed. RCB No. 186.
Document (196 KB PDF).

March 6, 1986. Review. 5 Pages.
Joseph Reinert. Exposure Assessment Branch.
Reg. No.: 49244-1 and 49244-2. Registration - Exposure Data.
Document (293 KB PDF).

March 10, 1986. Memorandum. 5 Pages.
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 (294 KB PDF).

March 24, 1986. Memorandum. 4 Pages.
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 (312 KB PDF).

April 1, 1986. Memorandum. 5 Pages.
Michael 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 (369 KB PDF).

April 10, 1986. Memorandum. 3 Pages.
Stephen Saunders. Toxicology Branch.
Human Health Risks for Chlorpyrifos.
Tox PN #1311; Caswell #219AA.
Document (312 KB PDF).

April 15, 1986. Review. 9 Pages.
Emil Regelman. Exposure Assessment Branch.
Reg./File 464-404. To inquire whether or not additional
crop accumulation studies are required.
Document (535 KB PDF).

May 13, 1986. Memorandum. 3 Pages.
Linda Propst. Residue Chemistry Branch.
EPA Reg. No. 464-523. Chlorpyrifos on Peanuts.
Amended Registration. RCB No. 786.
Document (174 KB PDF).

May 19, 1986. Review. 11 Pages.
Samuel Creeger. Exposure Assessment Branch.
464-404. Protocol: fish accumulation in bluegill sunfish.
Pages 6-11 removed, registration data.
Document (204 KB PDF).

July 7, 1986. Memorandum. 9 Pages.
Nancy Dodd. Residue Chemistry Branch.
PP #6E3389. (RCB No. 798). Chlorpyrifos on Leeks.
Evaluation of Analytical Method and Residue Data
(Accession No. 262136).
Document (586 KB PDF).

July 21, 1986. Memorandum. 5 Pages.
Charles Frick. Residue Chemistry Branch.
EPA Registration No. 464-448 - Chlorpyrifos on Tobacco;
Response to Letter from Dow Chemical Company. RCB No. 882.
Document (305 KB PDF).

August 12, 1986. Memorandum. 7 Pages.
D. Stephen Saunders. Toxicology Branch.
New Use of Lorsban 50W (Chlorpyrifos 50%) on Sour
Cherries. EPA Reg. No. 464-552; Tox PN #1879.
Document (388 KB PDF).

August 27, 1986. Memorandum. 9 Pages.
D. Steven 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 (556 KB PDF).

September 30, 1986. Memorandum. 14 Pages.
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 (955 KB PDF).

October 25, 1986. Review. 45 Pages.
Emil Regelman. Exposure Assessment Branch.
Reg./File No. 464-404. Addendum to a Standard.
Document (2,561 KB PDF).

December 1, 1986. Memorandum. 8 Pages.
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 (545 KB PDF).

December 1, 1986. Memorandum. 5 Pages.
Nancy Dodd. Residue Chemistry Branch.
PP #6E3389 (RCB No. 1439). Chlorpyrifos on Leeks.
Amendment Dated August 19, 1986. Record #180526.
Document (279 KB PDF).

December 5, 1986. Memorandum. 4 Pages.
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 (232 KB PDF).

December 22, 1986. Review. 4 Pages.
Joseph Reinert. Exposure Assessment Branch.
Reg. No.: 49244-1 and 49244-2. Applicator Exposure Protocol.
Document (215 KB PDF).

January 21, 1987. Memorandum. 3 Pages.
Martha Bradley. 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 (218 KB PDF).

January 27, 1987. Memorandum. 15 Pages.
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 (1,189 KB PDF).

February 2, 1987. Memorandum. 3 Pages.
Nancy Dodd. Residue Chemistry Branch.
PP #6E3389 (RCB #1803). Chlorpyrifos on Leeks.
Amendment Dated 12/15/86. Record #187257.
(No Accession Number).
Document (145 KB PDF).

February 2, 1987. Memorandum. 2 Pages.
Nancy Dodd. Residue Chemistry Branch.
PP #6E3439 (RCB #1804). Chlorpyrifos on Dates.
Amendment Dated 12/15/86. Record #187256.
(No Accession Number).
Document (126 KB PDF).

March 5, 1987. Review. 4 Pages.
Allen Vaughan. Ecological Effects Branch.
Killmaster II Proposed Registration of Use on Sewer Man-Hole
Covers.
Document (186 KB PDF).

March 6, 1987. Letter. 2 Pages.
Dennis Edwards. Insecticide-Rodenticide Branch.
90-Day Inhalation Study, Chlorpyrifos Registration Standard.
Your Application Dated November 24, 1986.
Document (1,247 KB PDF).
Attachment(s) following:

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

January 22, 1987. Memorandum. 15 Pages.
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.

April 30, 1987. Memorandum. 8 Pages.
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 (548 KB PDF).

May 1, 1987. Review. 3 Pages.
Emil Regelman. Exposure Assessment Branch.
Killmaster II New Use for Control of Sewer Cockroach in
Manholes.
Document (118 KB PDF).

June 18, 1987. Memorandum. 3 Pages.
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 (176 KB PDF).

July 13, 1987. Memorandum. 6 Pages.
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 (356 KB PDF).

July 16, 1987. Memorandum. 2 Pages.
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 (118 KB PDF).

July 20, 1987. Memorandum. 9 Pages.
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 (914 KB PDF).

August 4, 1987. Review. 30 Pages.
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 (793 KB PDF).

August 19, 1987. Memorandum. 8 Pages.
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 (583 KB PDF).

September 2, 1987. Review. 8 Pages.
Michael Firestone. Exposure Assessment Branch.
Reg. No.: 464-404. Support of the Existing Registration
of the Dow Turf Insecticide Line of Products.
Document (532 KB PDF).

October 29, 1987. Memorandum. 6 Pages.
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 (377 KB PDF).

December 17, 1987. Review. 4 Pages.
Therese Dougherty. Exposure Assessment Branch.
Reg./File No 464-404
Reevaluation of rotational crop restriction.
Document (192 KB PDF).

March 1, 1988. Memorandum. 2 Pages.
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 (171 KB PDF).

April 29, 1988. Memorandum. 28 Pages.
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 (2,065 KB PDF).

June 1, 1988. Memorandum. 18 Pages.
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 (824 KB PDF).

June 17, 1988. Memorandum. 2 Pages.
Quang Bui. Toxicology Branch.
Amended registration for the use of Chlorpyrifos
in plenum type structures
EPA ID. No. 464-562.
Document (95 KB PDF).

June 28, 1988. Review. 18 Pages.
Michael Firestone. Exposure Assessment Branch.
Reg./File No 464-562
Amended Registration for Plenum Housing.
Document (907 KB PDF).

July 8, 1988. Memorandum. 7 Pages.
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 statement of formula.
Document (484 KB PDF).

August 16, 1988. Memorandum. 2 Pages.
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 (162 KB PDF).

August 30, 1988. Memorandum. 3 Pages.
Leung Cheng. Dietary Exposure Branch.
88-OR-19. Section 18 Exemption. Chlorpyrifos on Hops.
No MRID #. DEB #4276.
Document (188 KB PDF).

September 2, 1988. Memorandum. 124 Pages.
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 (4,303 KB PDF).

September 19, 1988. Memorandum. 2 Pages.
Alan Levy. 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 (111 KB PDF).

September 23, 1988. Memorandum. 8 Pages.
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 (681 KB PDF).

September 27, 1988. Memoarndum. 4 Pages.
Dennis edwards. Insecticide-Rodenticide Branch.
Toxicology Data
Pyrinex (Chlorpyrifos) Insecticide
EPA File Symbol 11678-UL.
Document (327 KB PDF).

October 13, 1988. Review. 3 Pages.
Paul Mastradone. Environmental Fate & Groundwater Branch.
Review Terrestrial Field Dissipation Study.
MRID 40395201.
Document (212 KB PDF).

October 28, 1988. Data Eval. Rec. 4 Pages.
Daniel Rieder. Ecological Effects Branch.
Toxicity of Selected Controlled Release and Corresponding
Unformulated Technical Grade Pesticides to the Fathead
Minnow.
Document (198 KB PDF).

October 31, 1988. Review. 2 Pages.
Emil Regelman. Environmental Fate & Groundwater Branch.
464-404; Review confined rotational crops (165-1)
MRID 256636-00.
Document (102 KB PDF).

November 25, 1988. Memorandum. 3 Pages.
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 (247 KB PDF).

December 1, 1988. Data Eval. Rec.. 18 Pages.
M. Coleman. Dynamac Corporation for EFGWB.
Study 2; Photodegradation in water
Pages 5-18 removed, registrant data.
MRID 40026101.
Document (267 KB PDF).

December 1, 1988. Data Eval. Rec.. 20 Pages.
K.Patten. Dynamac Corporation for EFGWB.
Study 4; Photodegradation on soil
Pages 5-20 removed, registant data.
MRID 00149224, 00153082.
Document (275 KB PDF).

December 1, 1988. Data Eval. Rec.. 26 Pages.
L. Binari. Dynamac Corporation - EFGWB.
Study 5
Photodegradation in air. Pages 5-26 removed, registrant data
MRID 40234801.
Document (304 KB PDF).

December 1, 1988. Data Eval. Rec.. 28 Pages.
L. Binari. Dynamac Corporation - EFGWB.
Study 8
Mobility - Laboratory Volatility.
Pages 6-28 removed, registrant data.
MRID 00155638, 40050402.
Document (366 KB PDF).

December 1, 1988. Data Eval. Rec.. 21 Pages.
L. Binari. Dynamac Corporation - EFGWB.
Study 9
Field Dissipation - Terrestrial
Pages 7-21 removed, registrant data.
MRID 40395201.
Document (423 KB PDF).

December 1, 1988. Data Eval. Rec.. 45 Pages.
L. Binari. Dynamac Corporation - EFGWB.
Study 10
Field Dissipation - Terrestrial
Pages 7-45 removed, registrant data.
MRID 40059001.
Document (517 KB PDF).

December 1, 1988. Data Eval. Rec.. 30 Pages.
L. Binari. Dynamac Corporation - EFGWB.
Study 12
Confined Accumulation - Rotational Crops
Pages 6-30 removed, registrant data.
MRID 00149415.
Document (458 KB PDF).

December 1, 1988. Data Eval. Rec.. 41 Pages.
J. Harlin. Dynamac Corporation - EFGWB.
Study 13
Laboratory Accumulation - Fish
Pages 6-41 removed, registrant data.
MRID 40056401.
Document (385 KB PDF).

December 6, 1988. DER. 6 Pages.
Henry Craven. Ecological Effects Branch.
Acute Flow-through Toxicity of Chlorpyrifos Technical to
Dapnia magna.
Page 6 removed, registration data.
MRID 408409-02.
Document (412 KB PDF).

December 6, 1988. Data Eval Rec. 7 Pages.
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 (438 KB PDF).

December 6, 1988. DER. 7 Pages.
Henry Craven. Ecological Effects Branch.
Acute Flow-Through Toxicity of Chlorpyrifos Technical
to Bluegill Sunfish.
Page 7 removed, registration data.
MRID 408409-04.
Document (439 KB PDF).

December 13, 1988. DER. 3 Pages.
Henry Craven. Ecological Effects Branch.
Avian Acute Oral LD50 - Mallard duck
Accession number 408547-01.
Document (169 KB PDF).

December 13, 1988. DER. 6 Pages.
Henry Craven. Ecological Effects Branch.
Avian Dietary LC50 - Mallard Duck
Pages 4-6 removed, registrant data.
Accession number 408547-02.
Document (210 KB PDF).

December 13, 1988. DER. 6 Pages.
Henry Craven. Ecological Effects Branch.
Avian dietary LC50 - Bobwhite quail
Pages 4-6 removed, registrant data.
Accession number 408547-03.
Document (222 KB PDF).

December 15, 1988. Memorandum. 4 Pages.
Debra Edwards. Dietary Exposure Branch.
Chlorpyrifos Second Round Review (SRR) - Anticipated
Residues for Use in Dietary Exposure Assessment.
Document (254 KB PDF).

December 15, 1988. Memorandum. 3 Pages.
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 (195 KB PDF).

December 21, 1988. Memorandum. 9 Pages.
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 (475 KB PDF).

December 29, 1988. Memorandum. 5 Pages.
Leung Cheng. Dietary Exposure Branch.
89-TX-03. Section 18 Exemption. Chlorpyrifos on Winter
Wheat. No MRID #. Branch #4744.
Document (385 KB PDF).

January 4, 1989. Memorandum. 3 Pages.
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 (239 KB PDF).

January 13, 1989. Memorandum. 16 Pages.
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 (1,074 KB PDF).

January 24, 1989. Memorandum. 3 Pages.
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 (195 KB PDF).

January 27, 1989. Memorandum. 2 Pages.
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 (103 KB PDF).

March 21, 1989. Memorandum. 3 Pages.
Debra Edwards. Dietary Exposure Branch.
Residues of Chlorpyrifos per se in Meat and Milk as a
Result of Ingestion of Treated Feed Items.
Document (225 KB PDF).

April 3, 1989. Memorandum. 13 Pages.
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 (955 KB PDF).

April 27, 1989. Memorandum. 3 Pages.
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 (256 KB PDF).

April 28, 1989. Memorandum. 25 Pages.
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 (2,699 KB PDF).

May 9, 1989. Memorandum. 5 Pages.
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 (453 KB PDF).

May 17, 1989. Memorandum. 3 Pages.
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 (150 KB PDF).

May 19, 1989. Efficacy Review. 1 Page.
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.
Document1 (71 KB PDF).

June 23, 1989. Memorandum. 3 Pages.
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 (178 KB PDF).

June 29, 1989. Memorandum. 20 Pages.
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 (941 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.

June 30, 1989. Memorandum. 6 Pages.
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 (426 KB PDF).

July 13, 1989. Memorandum. 26 Pages.
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 (1,077 KB PDF).

July 26, 1989. Memorandum. 4 Pages.
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 (349 KB PDF).

September 12, 1989. Memorandum. 2 Pages.
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 (145 KB PDF).

October 17, 1989. Review. 9 Pages.
Emil Regelman. Environmental Fate & Groundwater Branch.
Reg. No. 464-552
Review application for amended registration of Lorsban 50W
to add use on blueberries.
Document (527 KB PDF).

January 4, 1990. Memorandum. 3 Pages.
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 (200 KB PDF).

January 5, 1990. Memorandum. 17 Pages.
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 (1,062 KB PDF).

January 10, 1990. Memorandum. 19 Pages.
David Jaquith. Non-Dietary Exposure Branch.
Re-evaluation of Chlorpyrifos Lawn Care Exposure Study.
(HED Project # 9-0609).
Document (1,170 KB PDF).

January 11, 1990. Memorandum. 2 Pages.
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 (128 KB PDF).

February 7, 1990. Review. 9 Pages.
James Akerman. Ecological effects Branch.
Reg. No. 464-552
Proposed registration for use on
blueberries.
Document (531 KB PDF).

March 21, 1990. Memorandum. 4 Pages.
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 (326 KB PDF).

April 13, 1990. Memorandum. 7 Pages.
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 (706 KB PDF).

June 19, 1990. Memorandum. 2 Pages.
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 (126 KB PDF).

June 21, 1990. Review. 49 Pages.
Emil Regelman. Environmental Fate & Groundwater 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 (3,080 KB PDF).

June 28, 1990. Memorandum. 6 Pages.
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 (460 KB PDF).

July 11, 1990. Review. 15 Pages.
Henry Nelson. Environmental Fate & Groundwater Branch.
464-404. Photodegradation on soil and in air protocols.
Pages 5-15 removed, registration data.
Document (285 KB PDF).

July 26, 1990. Memorandum. 3 Pages.
Jane Smith. Dietary Exposure Branch.
AZ900006. 24(c) Registration. Chlorpyrifos (Lorsban 4E,
EPA Reg. No. 464-448) on Asparagus in Arizona. DEB #6837.
Document (194 KB PDF).

September 19, 1990. Efficacy Review. 1 Page.
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 (83 KB PDF).

October 3, 1990. Memorandum. 1 Page.
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 (73 KB PDF).

October 16, 1990. Memorandum. 2 Pages.
Elizabeth Doyle. Toxicology Branch II.
Chlorpyrifos - Dursban TC label amendment.
Document (150 KB PDF).

November 5, 1990. Review. 18 Pages.
Henry Nelson. Environmental Fate & Groundwater Branch.
062719-00015. Review protocol on bioaccumulation in oysters.
Pages 7-18 removed, registration data.
Document (328 KB PDF).

November 8, 1990. Memorandum. 11 Pages.
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 (829 KB PDF).

December 5, 1990. Memorandum. 2 Pages.
Ameesha Mehta. Occupational & Residential Expos. Branch.
Chlorpyrifos Label Review. HED Project #0-1878.
Document (149 KB PDF).

February 17, 1991. Review. 13 Pages.
Akiva Abramovitch. Environmental Fate & Groundwater Branch.
Review request to amend the label to add use on turf
and ornamental plants (field/greenhouse).
Document (897 KB PDF).

March 11, 1991. Memorandum. 4 Pages.
Bipin Gandhi. Registration Support Branch.
Product Chemistry Review (Supplementary) for Chlorpyrifos
(Pyrinex) - EPA Reg. No. 11678-45 - Accession No. 416230-01.
Document (222 KB PDF).

April 3, 1991. Data Eval. Rec.. 14 Pages.
Herbert Manning. Environmental Fate & Ground Water Branch.
Photolysis degradation in Water (161-2)
MRID #41747206.
Pages 4-14 removed, registrant data.
Document (212 KB PDF).

April 4, 1991. Memorandum. 5 Pages.
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 (361 KB PDF).

April 4, 1991. Review. 16 Pages.
Akiva Abramovitch. Environmental Fate & Groundwater Branch.
Review protocol for field dissipation (warm season and cool
season) of turgrass insecticide.
Pages 6-13 removed, registration data.
Document (481 KB PDF).

May 8, 1991. Memorandum. 2 Pages.
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 (109 KB PDF).

May 17, 1991. Memorandum. 2 Pages.
Dennis Edwards. Insecticide-Rodenticide Branch.
Chlorpyrifos
Two-Generation Rat Reproduction
Study--Preliminary Results.
Document (219 KB PDF).
Attachment(s) following:

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

July 10, 1991. EEB Review. 8 Pages.
Michael Barrett. Environmental Fate & Groundwater Branch.
Comment on the detection limit and analytical method used
for chlorpyrifos and 3,5,6.......degradate.
Document (507 KB PDF).

July 24, 1991. Memorandum. 5 Pages.
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 (396 KB PDF).

August 14, 1991. Memorandum. 17 Pages.
Doug Urban. Ecological Effects Branch.
Chlorpyrifos Degradate Data Evaluation Records:
Reregistration Follow-up (D163629; 191413; S394590)
MRID 418290-01, -02, -03, -04, -05.
Document (1,150 KB PDF).

August 23, 1991. Review. 4 Pages.
Anonymous. Ecological Effects Branch.
Review of avian dietary studies with microencapsulated
products.
MRID Nos. 419655-01 & 02.
Document (216 KB PDF).

August 28, 1991. Data Eval. Rec.. 3 Pages.
Kathryn Valente. Ecological Effects Branch.
Avian Dietary LC50, Mallard duck.
MRID 418290-02.
Document (271 KB PDF).

September 18, 1991. Memorandum. 2 Pages.
Felecia Fort. Chemistry Branch.
Chlorpyrifos: Additional Requirements Needed for Data
Call-In. DP Barcode D163718. CBRS No. 7912.
Document (96 KB PDF).

October 2, 1991. DER. 9 Pages.
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 (502 KB PDF).

October 2, 1991. DER. 9 Pages.
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 (500 KB PDF).

October 2, 1991. DER. 9 Pages.
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 (305 KB PDF).

October 7, 1991. DER. 8 Pages.
Kathryn Valente. Ecological Effects Branch.
Avian Dietary LC50; Mallard duck (Anas platyrhynchos).
Pages 6-8 removed, registration data.
MRID No. 419655-01.
Document (382 KB PDF).

October 7, 1991. DER. 8 Pages.
Kathryn Valente. Ecological Effects Branch.
Avian Dietary LC50; Bobwhite quail (Colinus virginianus).
Pages 6-8 removed, registration data.
MRID No. 419655-02.
Document (398 KB PDF).

December 3, 1991. Memorandum. 2 Pages.
David Jaquith. Occupational and Residential Exposure Br.
Reply to Registrant Comments on Air Monitoring Data
Requirments for Dursban TC (HED Project No. 1-2256).
Document (140 KB PDF).

December 9, 1991. Memorandum. 11 Pages.
Mark Perry. Registration Support Branch.
EPA File Symbol/EPA Reg. No.: 7501-31 Lorsban 30 Flowable.
MRID No. 420013-01 & 06.
Document (205 KB PDF).

March 6, 1992. Data Eval. Rec. 3 Pages.
Robert Fricke. Toxicology Branch II.
Subchronic Inhalation Range Finder - Rat
MRID 421449-09.
Document (610 KB PDF).

March 12, 1992. Data Eval. Rec. 7 Pages.
Robert Fricke. Toxicology Branch.
90-day oral - Dog (82-1)
MRID 421728-01.
Document (491 KB PDF).

April 25, 1992. Memorandum. 14 Pages.
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 (969 KB PDF).

May 18, 1992. Memorandum. 7 Pages.
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 (569 KB PDF).

September 2, 1992. Data Eval. Rec. 7 Pages.
Robert Fricke. Toxicology Branch.
Oral Range Finder - Dog.
Document (452 KB PDF).

September 16, 1992. Data Eval. Rec.. 8 Pages.
Louis Ricifi. KBN Engineering and Applied Sciences/EEB.
Estuarine Fish Flow-Through Toxicity Test.
Species Tested: Atlantic Silverside.
MRID 422459-01.
Document (537 KB PDF).

September 16, 1992. Data Eval. Rec.. 13 Pages.
Rosemary Graham Mora. KBN Engineering and Applied Sciences/EEB.
Mollusc 96-Hour, Flow-Through Shell Deposition
Study. Species Tested: Eastern Oyster.
MRID 422459-03.
Document (787 KB PDF).

September 16, 1992. Data Eval. Rec.. 8 Pages.
Louis Ricifi. KBN Engineering and Applied Sciences/EEB.
Estuarine Shrimp Flow-Through Toxicity Test.
Species Tested: Grass Shrimp.
MRID 422459-02.
Document (521 KB PDF).

September 23, 1992. Memorandum. 4 Pages.
Robert Fricke. Toxicology Branch.
Review of data for chlorpyrifos (pyrinex) for Data
Call-In notice
MRID 421449-08, -09, 421728-01, -02, -03.
Document (277 KB PDF).

October 2, 1992. Memorandum. 2 Pages.
Dennis Edwards. Insecticide-Rodenticide Branch.
Toxicology Data
Pyrinex Technical
EPA Registration No. 11678-45
Your Submission dated December 16, 1991.
Document (109 KB PDF).

October 3, 1992. Memorandum. 19 Pages.
Elizabeth Doyle. Toxicology Branch II.
Chlorpyrifos - Review of a Two-Generation Reproduction
Study in Rats. MRID 419303-01.
Tox review 009779.
Document (966 KB PDF).

December 3, 1992. Memorandum. 19 Pages.
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 (1,811 KB PDF).

January 8, 1993. Memorandum. 8 Pages.
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 (575 KB PDF).

January 12, 1993. Memorandum. 2 Pages.
Leung Cheng. Chemistry Branch.
PP#4F3008/FAP#1H5295. Chlorpyrifos on Tomatoes, Beans,
Peas, and Soybean. Revised Section F. CBRS # 10973. DP
Barcode: D185266.
Document (157 KB PDF).

February 8, 1993. Memorandum. 1 Page.
Leung Cheng. Chemistry Branch.
Chlorpyrifos. Residue Data in Response to Notice of
9/18/91. DP Barcode: D176281. Addendum to CBRS # 9638.
Document (66 KB PDF).

February 19, 1993. Memorandum. 133 Pages.
John Bazuin. Science Analysis and Coordination Branch.
Chlorpyrifos Dietary Exposure Analysis:
Anticipated Residues on Wheat, Separation of
Trichloropyridinol (TCP) From the Tolerance
Expression, and Increase in Tomato Tolerances.
Document (12,536 KB PDF).

April 27, 1993. Memorandum. 23 Pages.
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 (933 KB PDF).

April 30, 1993. Memorandum. 10 Pages.
Robert Fricke. Toxicology Branch II.
Chlorpyrifos: Review subchronic toxicity study
submitted in response to data call-in notice
MRID 425258-01.
Document (784 KB PDF).

May 13, 1993. Review. 11 Pages.
Anthony Maciorowski. Ecological effects Branch.
Review Proposal to Use Chlorpyrifos on
Caneberries.
Document (755 KB PDF).

May 26, 1993. Memorandum. 2 Pages.
Robert Fricke. Toxicology Branch II.
SUBJECT: Chlorpyrifos: Review of generic data submission to
support registration.
MRID 426691-01, 424954-04,.
Document (112 KB PDF).

June 23, 1993. Memorandum. 3 Pages.
Janet Anderson. Biological Analysis Branch.
The Need for risk Mitigation Measures with a Proposed
Use of Chlorpyrifos on Caneberries.
Document (222 KB PDF).

June 29, 1993. Memorandum. 7 Pages.
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 (656 KB PDF).

July 19, 1993. Data Eval. Rec.. 13 Pages.
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 (360 KB PDF).

August 2, 1993. Memorandum. 2 Pages.
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 (91 KB PDF).

August 4, 1993. Data Eval. Rec.. 5 Pages.
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 (300 KB PDF).

August 17, 1993. Memorandum. 11 Pages.
Patricia McLaughlin. Toxicology Branch.
Toxicology Review for the Reregistration Eligibility
Document on Chlorpyrifos (RED).
Document (974 KB PDF).

August 18, 1993. Memorandum. 11 Pages.
Steven 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 (801 KB PDF).

September 16, 1993. Memorandum. 2 Pages.
Steven Knizner. Chemistry Branch II.
Chlorpyrifos. Waiver for Magnitude of the Residue in Dill &
Okra. Reregistration Case No. 0100.
Document (108 KB PDF).

September 27, 1993. Memorandum. 6 Pages.
Nancy Dodd. Chemistry Branch.
PP#4F03008 (CBTS#10804; Barcode #D183901). Chlorpyrifos
on Tomatoes. Anticipated Residues.
Document (336 KB PDF).

September 27, 1993. Memorandum. 8 Pages.
Nancy Dodd. Chemistry Branch I.
ID#062719-00039 (CBTS #10786; Barcode #D183903).
Chlorpyrifos on Peppers. Anticipated Residues.
Document (461 KB PDF).
Attachment(s) following:

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

September 29, 1993. Memorandum. 4 Pages.
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 (193 KB PDF).

November 23, 1993. Memorandum. 9 Pages.
George Ghali. Health Effects Division.
RfD/Peer Review Report of Chlorpyrifos.
Document (791 KB PDF).

December 20, 1993. Review. 37 Pages.
Anthony Maciorowski. Ecological Effects Branch.
Evaluation of mysid life-cycle study for reregistration
purposes. Pages 18-25 removed, registrant data.
MRID 426649-01.
Document (1,945 KB PDF).

January 24, 1994. EEB Review. 17 Pages.
Elizabeth Behl. Environmental Fate & Groundwater Branch.
6(a)2 action - respond to reports of chlorpyrifos residues
in wells and a cistern.
Page 6 removed, registration data.
Document (1,527 KB PDF).

February 2, 1994. Memorandum. 10 Pages.
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 (587 KB PDF).

February 2, 1994. Memorandum. 2 Pages.
Virginia Dobozy. Toxicology Branch II.
Analysis of Incident Reports for Adams Flea & Tick Dip with
Dursban (for Dogs).
Document (137 KB PDF).

February 16, 1994. Memorandum. 7 Pages.
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 (438 KB PDF).

February 25, 1994. Memorandum. 26 Pages.
Stephen A. Schiable. 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 (2,663 KB PDF).

March 29, 1994. Memorandum. 15 Pages.
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 (797 KB PDF).

March 30, 1994. Memorandum. 1 Page.
Robert Fricke. Toxicology Branch.
Chlorpyrifos - Upgrading Acute Neurotoxicity Study
MRID 429431-01.
Document (98 KB PDF).

April 26, 1994. Memorandum. 10 Pages.
Robert Fricke. Toxicology Branch.
CHLORPYRIFOS: Review of subchronic neurotoxicity study
(82-7) to support reregistration
MRID 429298-01
Tox review 010935.
Document (835 KB PDF).

May 23, 1994. Memorandum. 9 Pages.
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 (773 KB PDF).

June 22, 1994. Record. 34 Pages.
Henry Nelson. Environmental Fate & Groundwater 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 (631 KB PDF).

Jun