List of Documents Related to the Pyrethroid Reevaluation
Pyrethroid Active Ingredient Grouping
For purposes of data requirements, the Department of Pesticide Regulation (DPR) divided pyrethroid chemicals into three groups. Group I consists of the active ingredients: bioallethrin, d-allethrin, imiprothrin, phenothrin, prallethrin, resmethrin, and tetramethrin. Group II consists of two active ingredients: tau-fluvalinate and tralomethrin. Group III includes the following active ingredients: (s)-cypermethrin, beta-cyfluthrin, bifenthrin, cyfluthrin, cypermethrin, deltamethrin, esfenvalerate, fenpropathrin, gamma-cyhalothrin, lambda-cyhalothrin, and permethrin.
The following is a list of documents associated with the pyrethroid reevaluation. While it is DPR’s intent to maintain this list as time and resources allow, DPR cannot guarantee its accuracy or completeness. The documents are listed in reverse chronological order in order of date received, prepared or issued by DPR:
| Tracking ID Number | Title | Data Req. Group | Date | Document Type |
|---|---|---|---|---|
| None | Comments from PWG on DPR’s draft Pyrethroid Directive document. | III |
5/27/09 | Comments |
| None | Comments from CASQA on DPR’s draft Pyrethroid Directive document. | III |
5/15/09 | Comments |
| None | Comments from Pest Control Operators of California (PCOC) on DPR’s draft Pyrethroid Directive document. | III |
5/15/09 | Comments |
| None | Comments from U.S. EPA on DPR’s draft Pyrethroid Directive document. | III |
5/15/09 | Comments |
| 233420 and 233704 | Assessment of the impact of organic carbon on the toxicity of pyrethroids. Submission includes six reports. Note: Study protocol accepted under ID 228997. | III |
5/14/09 and 5/28/09 | Data |
| 229525 | PWG response to comments (ID 230386, 230387) received from stakeholders regarding controlled use urban monitoring study. | III |
4/29/09 | Comments |
| 230969 | DPR letter to PWG. Reviewed POTW preliminary water monitoring study. Found the objective of the study can be met with the sampling regime outlined in the proposal. DPR is requiring the PWG to submit a complete study protocol by 7/2/09. | III |
4/2/09 | Letter |
| 232818 | Sediment Toxicity Testing Program: Progress Report #1. Note: Study protocol accepted under ID 228997 | III |
4/1/09 | Registrant submission – PROGRESS REPORT |
| 232817 | Pyrethroid off-site movement study design titled “Study Design For Study Number 08-03: Controlled Use Urban Monitoring Study.” Note: Follow up to concept design submitted under ID 229515. | III |
4/1/09 | Registrant submission – STUDY DESIGN |
| 232543 | Laboratory Work Plan To Investigate the Fate Of Pyrethroid Insecticides Through Primary Settling, Aerobic And Anaerobic Biological Treatment And Ultrafiltration. | III |
3/18/09 | Registrant submission – STUDY DESIGN |
| 232544 | Comments from CASQA on PWG’s final report for runoff losses from treated turfgrass (ID 231454). | III |
3/11/08 | Comments |
| 232395 | Pyrethroid off-site movement final report titled “Washoff/Runoff Of Cypermethrin Residues From Slabs Of External Building Material Surfaces Using Simulated Runoff” Note: Study protocol reviewed under ID 226526 | III |
3/10/09 | Data |
| None | Email from Ann Prichard to Jim Wells of DPR’s draft Pyrethroid Directive document. | III |
3/5/09 | Email communication |
| 230387 | DPR letter to CASQA providing comment on PWG’s Controlled Use Urban Monitoring study(ID 229515). | III |
3/5/09 | Letter |
| 230386 | DPR letter to State Water Resources Control Board providing comment on PWG’s Controlled Use Urban Monitoring study (ID 229515). | III |
3/5/09 | Letter |
| 229515 | DPR letter to PWG. DPR considers PWG’s Controlled Use Urban Monitoring study to be a concept paper. A study protocol which addresses comments shall be submitted. | III |
3/4/09 | Letter |
| 230969 | Evaluation Report for preliminary study design for POTW monitoring conducted by DPR staff environmental scientist. | III |
2/12/09 | Memorandum |
| None | Dr. Donald Weston presents information from his research on pyrethroids in urban runoff. | All |
1/16/09 (PDF, 660 kb) | PREC Talk |
| 231454 | Pyrethroid off-site movement final report titled “Quantification Of Pyrethroid Runoff Losses From Treated Turfgrass Under Over-Irrigation Conditions And Simulated Rainfall.” Note: Study protocol reviewed under ID 226525. | III |
1/8/09 | Data |
| 230969 | PWG submits preliminary study design for POTW monitoring. | III |
11/17/09 | Registrant submission – STUDY DESIGN |
| 225953 | DPR letter to CASQA. Expansion of existing reevaluation to include water column toxicity not justified based upon limited studies submitted. | III |
10/16/09 | Letter |
| 230387 | Comments from CASQA on Study design for study number 08-03: Controlled Use Urban Monitoring study (ID 229515). | III |
10/14/08 | Comments |
| 230386 | Comments from State Water Resources Control Board, San Francisco Bay Regional Water Quality Control Board, TDC Environmental, and UC Berkeley on Study design for study number 08-03: Controlled Use Urban Monitoring study (ID 229515). | III |
10/14/08 | Comments |
| 228460 | DPR letter to PWG. GIS land use study provides further direction for studying off-site movement. | III |
9/29/08 | Letter |
| 228997 | DPR letter to PWG. Study protocol acceptable. 10 day and cold temperature studies due 2nd quarter of 2010. Organic carbon study 1st quarter of 2009. Semiannual updates due with first report in 1st quarter of 2009. Defer chronic studies 2.5 years upon EPA finalizing OPPTS protocol. | III |
9/22/08 | Letter |
| 228369 | DPR letter to PWG. Identifying barriers to adoption of BMPs not relevant to the pyrethroid reevaluation. | III |
9/22/08 | Letter |
| 229801 | (s)-cypermethrin aerobic/anaerobic soil metabolism data waiver request. | III |
8/29/08 | Registrant submission –WAIVER REQUEST |
| 229515 | Pyrethroid off-site movement study design titled “Study design for study number 08-03: Controlled Use Urban Monitoring study.” | III |
8/5/08 | Registrant submission – STUDY DESIGN |
| 229352 | Pyrethroid off-site movement final report titled “PWG-07-01: The Use Of Agricultural Sediment Basins and PAM as Best Management Practices In Irrigated Tomatoes.” Note: Study protocol reviewed under ID 222841. | III |
7/29/08 | Data |
| 225201 | DPR letter to Valent BioSciences. Group I data requirements for tetramethrin found acceptable for the reevaluation. | I |
7/25/08 | Letter |
| 225202 | DPR letter to Valent BioSciences. Group I data requirements for bioallethrin found acceptable for reevaluation. | I |
7/14/08 | Letter |
| none | Memorandum from John Sanders to Laura Speare providing a discussion document for dissemination amongst interested persons of the UP3 project. | III |
7/8/08 | Memorandum |
| 228369 | Evaluation Report for study entitled “Barriers to Adoption of Irrigation Runoff Reducing Technologies” conducted by DPR staff environmental scientist. | III |
7/7/08 | Memorandum |
| 228460 | Evaluation Report for study entitled “GIS Land Use Analysis of Kirker Creek and Pleasant Grove Creek Sampling Site Watersheds” conducted by DPR staff environmental scientist. | III |
7/3/08 | Memorandum |
| 228998 | Pyrethroid off-site movement final report titled “An Assessment of Benthic Communities with Concurrent Physical Habitat, Pyrethroid and Metals Analysis in an Urban and Residential Stream in California (Bioassessment) – Final Report.” | III |
7/2/08 | Data |
| 228997 | Sediment toxicity study design. | III |
7/2/08 | Registrant submission – STUDY DESIGN |
| 225202 | Bioallethrin evaluation report of environmental fate studies conducted by DPR staff chemist. | I |
6/30/08 | Memorandum |
| 225201 | Tetramethrin evaluation report of environmental fate studies conducted by DPR staff chemist. | I |
6/25/08 | Memorandum |
| 228460 | Pyrethroid off-site movement final report titled “GIS Land Use Analysis of Kirker Creek and Pleasant Grove Creek Sampling Site Watersheds (Source Identification) – Final Report.” | III |
5/29/08 | Data |
| 228619 | Resmethrin soil adsorption/desorption data waiver request. | I |
5/27/08 | Registrant submission –WAIVER REQUEST |
| 228369 | Pyrethroid off-site movement final report titled “Identifying Barriers to Adoption of Irrigation Runoff Reducing Technologies – Final Report.” | III |
5/22/08 | Data |
| 222841 and 222842 | DPR letter to PWG providing history on various offsite movement study protocols. Final reports from Sediment Basin Removal Efficiency and Source Identification are due May 30, 2008. Quarterly meetings planned with DPR and stakeholders. Meeting dates will be available to PWG. | III |
5/13/08 | Letter |
| 225442 | DPR letter to U.S. EPA, Region 9 providing comment on PWG’s offsite movement study protocols (ID 222841 and 222842). Quarterly meetings planned with DPR and stakeholders. | III |
5/13/08 | Letter |
| 225454 | DPR letter to CASQA providing comment on PWG’s offsite movement study protocols (ID 222841 and 222842). Quarterly meetings planned with DPR and stakeholders. | III |
5/12/08 | Letter |
| 225455 | DPR letter to SWRCB providing comment on PWG’s offsite movement study protocols (ID 222841 and 222842). Quarterly meetings planned with DPR and stakeholders. | III |
5/12/08 | Letter |
| 226525 and 226526 | DPR letter to PWG addressing Grass Run-off and Building Material Washoff study designs. Final reports due 12/31/08. | III |
5/9/08 | Letter |
| 225953 | DPR letter to U.S. EPA commenting on PWG’s acute sediment toxicity proposal (ID 224776). | III |
5/9/08 | Letter |
| 225952 | DPR letter to SWRCB commenting on PWG’s acute sediment toxicity proposal (ID 224776). | III |
5/9/08 | Letter |
| 224776 | DPR letter to PWG commenting on their acute sediment toxicity proposal. Revised proposal addressing comments due 6/30/08. | III |
5/5/08 | Letter |
| 228329 | Cyfluthrin Use on Turf: Aquatic exposure assessment. | III |
5/1/08 | Data |
| 227835 | U.S. EPA Region 9 comments received on Grass Run-off (ID 226525) and Building Material Washoff study designs (ID 226526). | III |
4/21/08 | Comments |
| 227834 | CASQA comments received on Grass Run-off (ID 226525) and Building Material Washoff study designs (ID# 226526). | III |
4/18/08 | Comments |
| 224776 | Evaluation report of PWG acute and chronic testing proposal and stakeholder comments and recommendations authored by Environmental Monitoring Branch Chief. | III |
4/11/08 | Memorandum |
| 227716 | PWG response to comments (ID 225454) received from CASQA regarding early mitigation measures. | III |
4/9/08 | Comments |
| 227715 | PWG response to comments received on proposed sediment basin and urban monitoring studies under Tracking IDs 225442, 225454, and 225455. | III |
4/8/08 | Comments |
| None | U.S. EPA, OPP comments received on study number 08-02: Grass Run-off Study under Tracking ID 226525. | III |
3/11/08 | Comments |
| 223528 | DPR letter to resmethrin registrant. The submitted adsorption/desorption studies are inadequate. An acceptable study must be provided by 9/15/08. | I |
3/6/08 | Letter |
| 224437 | DPR letter to imiprothrin registrant. A water photolysis study will be required, prior to DPR approval of the amendment of any California imiprothrin product label to add outdoor uses. | I |
3/6/08 | Letter |
| 227074 | Sediment toxicity studies conducted with bifenthrin, cypermethrin, esfenvalerate, and cyfluthrin. Submission includes nine sediment toxicity studies, one study compiling and evaluating aquatic toxicity for synthetic pyrethroids and one report which presents an overview of sediment toxicity studies with synthetic pyrethroids. | III |
2/28/08 | Data |
| 226525 | Pyrethroid off-site movement study design titled “Study Design for Study Number 08-02: Grass Runoff Study.” | III |
2/28/08 | Registrant Submission STUDY DESIGN |
| 226526 | Pyrethroid off-site movement study design titled “Study Design for Study Number 08-01: Building Material Washoff Study.” | III |
2/19/08 | Registrant Submission STUDY DESIGN |
| None | Update on Reevaluation | All |
1/18/08 (PDF, 64 kb) | PREC Talk |
| 224776 | DPR letter to PWG eliciting feedback on comments received from stakeholders (issued Tracking Ids 225923, 225952, and 225953) | III |
1/16/08 | Letter |
| 224437 | Evaluation report of submitted environmental fate studies conducted with imiprothrin authored by DPR staff chemist. | I |
12/14/07 | Memorandum |
| 225953 | CASQA comments received on sediment toxicity study design under Tracking ID 224776. | III |
12/7/07 | Comments |
| 225952 | SWRCB, CVRWQCB, UCD, UCB, and TDC Environmental comments received on sediment toxicity study design under Tracking ID 224776. | III |
12/7/07 | Comments |
| 225923 | U.S. EPA, OPP comments received on sediment toxicity study design under Tracking ID 224776. | III |
12/6/07 | Comments |
| None | Tri-TAC comments received on sediment toxicity study design under Tracking ID 224776. | III |
12/5/07 | Comments |
| 222839 | DPR letter to PWG accepting study protocol entitled “Aerobic Aquatic and Anaerobic Aquatic Degradation of Pyrethroid Insecticides in Three CA Sediments.” Final results due 12/3/2009. | III |
12/3/07 | Letter |
| 225747 | Bioallethrin anaerobic soil metabolism data waiver request. | I |
11/15/07 | Registrant Submission |
| 225748 | Tetramethrin anaerobic soil metabolism data waiver request. | I |
11/15/07 | Registrant Submission |
| None | DPR letter to PWG to elicit comments on the stakeholder comments received on off-site movement overview document and study proposals under Tracking IDs 225454, 225442, and 225455. | III |
10/26/07 | Letter |
| 225442 | U.S. EPA Region 9 comments received on off-site movement overview document and study proposals under Tracking IDs 222841 and 222842. | III |
10/19/07 | Comments |
| 225455 | SWRCB comments received on off-site movement overview document and study proposals under Tracking IDs 222841 and 222842. | III |
10/19/07 | Comments |
| 222286 | DPR letter to PWG accepting POTW proposal for permethrin. | III |
10/17/07 | Letter |
| 225454 | CASQA comments received on off-site movement overview document and study proposals under Tracking IDs 222841 and 222842. | III |
10/17/07 | Comments |
| 225201 | Tetramethrin environmental fate studies. | I |
9/28/07 | Data |
| 225202 | Bioallethrin environmental fate studies. | I |
9/28/07 | Data |
| None | Update on Pyrethroids Reevaluation. | All |
9/21/07 (PDF, 59 kb) | PREC Talk |
| 221380 | DPR letter to Group II registrants of data waiver upon commitment to implement mitigation measures developed for other pyrethroids with similar uses. | II |
9/20/07 | Letter |
| 224776 | Sediment toxicity study design. | III |
9/11/07 | Registrant Submission |
| 224605 | Phenothrin environmental fate studies, additional information. | I |
8/30/07 | Data |
| 224590 | Phenothrin environmental fate studies. | I |
8/28/07 | Data |
| 224546 | d-Allethrin environmental fate studies. | I |
8/23/07 | Data |
| 224437 | Imiprothrin environmental fate studies. | I |
8/15/07 | Data |
| None | Off-site movement overview document. | III |
7/19/07 | Registrant Submission |
| None | DPR letter to PWG providing chronology of discussions since initiation of data call-in and reaquest overview document addressing pyrethroid transport mechanisms and/or mitigation measures by 7/23/07. | III |
7/9/07 | Letter |
| 223708 | Prallethrin environmental fate studies. | I |
6/27/07 | Data |
| 223528 | Resmethrin environmental fate studies. | I |
6/13/07 | Data |
| 222191 | DPR letter to PWG accepting analytical method for all Group III active ingredients. | III |
6/13/07 | Letter |
| 222835 | DPR letter to Tri-TAC commenting on the POTW monitoring proposal. | III |
6/13/07 | Letter |
| 222796 | DPR letter to PWG denying study proposals and request overview document. | III |
5/18/07 | Letter |
| 221608 | Section 6a2 data submission on pyrethroids. | III |
5/14/07 | Data |
| None | Pyrethroid Forum held at Cal/EPA Headquarters Building. Presentations posted on Web site. | III |
4/30/07 | Presentations |
| 222835 | Tri-TAC comments on POTW monitoring proposal under Tracking ID 222286. | III |
4/27/07 | Comments |
| 222796 | Pyrethroid off-site movement proposals titled “Approach for Assessing the Potential Ecological Impacts of Pyrethroids on Urban and Residential Streams in California” and “Identifying Barriers to Adoption of Irrigation Runoff Reducing Technologies.” | III |
4/26/07 | Registrant Submission - PROTOCOL |
| 222839 | Aerobic/anaerobic California sediment half-lives study protocol. | III |
4/26/07 | Registrant Submission – PROTOCOL |
| 222841 | Pyrethroid off-site movement proposal titled “Sediment Basin Removal Efficiency.” | III |
4/26/07 | Registrant Submission |
| 222842 | Pyrethroid off-site movement proposal titled “Source Identification.” | III |
4/26/07 | Registrant Submission |
| 222286 | POTW monitoring proposal. | III |
3/16/07 | Registrant Submission |
| 222191 | Sediment analytical method for all Group III’s. | III |
2/21/07 | Data |
| None | Memorandum from staff research scientist to Environmental Monitoring Branch Chief providing scientific justification for waiving all data requirements for Group II active ingredients upon registrant agreement to place mitigation measures developed for other pyrethroids with similar uses on their product labels. | II |
2/20/07 | Memorandum |
| None | Pyrethroid reevaluation Type II active ingredient workshop meeting summary and participant list. | III |
2/13/07 | General Document |
| 220331 | DPR letter to registrant retracting original decision to bridge existing anaerobic metabolism data. Data still required by specified timeframe. | III |
2/9/07 | Letter |
| None | Evaluation Report of environmental fate bridging data for gamma-cyhalothrin authored by DPR staff research scientist. | III |
2/5/07 | Memorandum |
| None | Pyrethroid reevaluation Type II active ingredient workshop to discuss protocol development for off-site movement, use of surrogate active ingredients, monitoring at POTW’s, and stakeholder involvment. | III |
1/29/07 | Letter |
| 220331 | DPR letter to registrant bridging existing anaerobic metabolism data on file for gamma-cyhalothrin. | III |
1/23/07 | Letter |
| 220331 | Evaluation report of environmental fate bridging data for gamma-cyhalothrin authored by DPR staff chemist. | III |
1/16/07 | Memorandum |
| 221380 | Tau-fluvalinate full data waiver request, second request. | II |
1/12/07 | Registrant Submission |
| 220353 | DPR letter to registrant stating the soil sorption data requirement for esfenvalerate is satisfied. | III |
1/2/07 | Letter |
| 220332 | DPR letter to registrant denying tau-fluvalinate data waiver request. | II |
12/13/06 | Letter |
| 219999 | DPR letter to PWG providing guidance on the data call-in. | III |
12/13/06 | Letter |
| None | Tri-TAC letter describing the importance of having a mass balance for each wastewater treatment plant. | III |
12/13/06 | Comments |
| 220332 | Evaluation report of full data waiver request for tau-fluvalinate authored by DPR staff environmental scientist | II |
12/8/06 | Memorandum |
| 220353 | Evaluation report of soil adsorption data conducted with esfenvalerate authored by DPR staff research scientist. | III |
11/28/06 | Memorandum |
| 220353 | Esfenvalerate request to reference data previously submitted for soil adsorption coefficient under Tracking ID 205615. | III |
11/2/06 | Registrant Submission |
| 220332 | Tau-fluvalinate full data waiver request. | II |
10/31/06 | Data |
| 220331 | Gamma-cyhalothrin request to bridge existing anaerobic metabolism data on file for lambda-cyhalothrin | III |
10/31/06 | Registrant Submission |
| 219999 | PWG letter providing comments and request guidance on the data-call in. | III |
10/3/06 | Registrant Submission |
| None | Initiation of Reevaluation on Products Containing Pyrethroid Active Ingredients. | All |
9/15/06 (PDF, 162 kb) | PREC Talk |
Note: To obtain any of the above documents, with the exception of those already available on DPR’s Web site, a public records request must be submitted to DPR. For more information on public record requests please refer to http://www.cdpr.ca.gov/public_r.htm. If the "document type" is identified as "data", an affirmation of status must be on file with DPR before the information will be released. Further information regarding a particular data submission may be obtained on DPR’s Web site at http://apps.cdpr.ca.gov/ereglib/.
FOR CONTENT QUESTIONS, CONTACT:
Denise Alder
1001 I Street, P.O. Box 4015
Sacramento, CA 95812
Phone: (916) 324-3522
E-mail: dalder@cdpr.ca.gov