Reports Directory

The California Department of Pesticide of Regulation (DPR) maintains a comprehensive list of references for all data and reports. 

For historic or archived information please make a request through DPR’s public records portal. 

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Study 322: Monitoring Pesticides in Wastewater Treatment Plant Influent and Effluent (2025)

April 28, 2025 | Surface Water

Study 321: Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2023

April 17, 2025 | Surface Water

Surface Wate Monitoring for Pesticides in Agricultural Areas of Northern California, 2023

April 15, 2025 | Surface Water

Monitoring of Dissolved Copper in California Coastal Waterbodies, 2023-2024

March 14, 2025 | Surface Water

Study 325: Analysis of Neonicotinoid and Fungicide Concentrations in Soil Cores from Treated Lettuce Fields

March 1, 2025 | Groundwater

Study 228: Monitoring Groundwater Concentrations of Pesticides in Sensitive Areas with High Agricultural Use (Well Network Sampling) Annual Update 2022

March 1, 2025 | Groundwater

Updating 1,3-Dichloropropene and Methyl Bromide Detections from 2011 to 2023

February 20, 2025 | Air

Study 310: Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2025

February 1, 2025 | Surface Water

Study 321. Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2025

February 1, 2025 | Surface Water

Study 329: Surface Water Monitoring for Pesticides in Urban Areas of Northern California (Water Year 2024/2025)

February 1, 2025 | Surface Water

Study 329: Pesticide Monitoring in Urban Areas of Northern California (FY2023/2024)

February 1, 2025 | Surface Water

Meteorological Data Processing for AERMOD: 2024 Updates

January 1, 2025 | Air

CCST Fumigant Study Phase 1

January 1, 2025 | Alternatives

Annual Residue Data 2021

January 1, 2025 | Residue

Application Options for 1,3-Dichloropropene Pilot Program

October 7, 2024 | Risk

Air Monitoring Network Results for 2023 Volume 13

October 1, 2024 | Air

Collection of Preserved Nitrate Samples and Safety

September 25, 2024 | Groundwater

Study 320: Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California during Water Year 2024-2025

September 1, 2024 | Surface Water

Modeling for Evaluating Occupational Bystander Cancer Risk from 1,3-Dichloropropene

August 29, 2024 | Air

How to File Pesticide Use Reports for Field Fumigant Applications

August 1, 2024 | Air

2024 Pesticide Drinking Water Standards and Information

July 1, 2024 | Groundwater

Revision of the Statistical Method to Identify Pesticide Chemicals with Potential to Move through Soil to Groundwater in California

July 1, 2024 | Groundwater

Monitoring of 1,3-Dichloropropene in Fresno and Merced Counties: Results for 2023

July 1, 2024 | Air

Draft Annual Report on Volatile Organic Compound Emissions from Pesticides: Emissions for 1990-2023

July 1, 2024 | Air

DPR’s 1,3-Dichloropropene Tarpaulin List

June 20, 2024 | Air

DPR’s 1,3-Dichloropropene Tarpaulin List

June 20, 2024 | Air

Human Health Reference Level Request for Azoxystrobin in Drinking Water

June 7, 2024 | Surface Water

Annual Report on Volatile Organic Compound Emissions from Pesticides: Emissions for 1990–2022

June 1, 2024 | Air

Pesticide monitoring in urban areas of Northern California (FY2022/2023)

May 16, 2024 | Surface Water

Nonfumigant Volatile Organic Compound (VOC) Regulations Product list (Updated May 7, 2024)

May 7, 2024 | Air

Study 335: Protocol for Groundwater Protection List Monitoring for Clothianidin and Thiamethoxam in High Use Areas

May 1, 2024 | Groundwater

Summary of Chloropicrin Flux Studies Submitted to the California Department of Pesticide Regulation

April 25, 2024 | Air

Pesticide Registration Evaluation Model (PREM) User’s Manual (Version 6.0)

April 10, 2024 | Surface Water

Methodology for Evaluating Pesticides for Surface Water Protection: PREM Version 6 Updates

April 10, 2024 | Surface Water

Determination of Selected Pesticides Collected on XAD-4 Resin by Ultra Performance Liquid Chromatography Mass Spectrometry and Gas Chromatography Mass Spectrometry

March 28, 2024 | Air

Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California (WY2022/2023)

March 24, 2024 | Surface Water

Monitoring Pesticides in Wastewater Influent and Effluent

March 18, 2024 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2022

March 4, 2024 | Surface Water

Study 310: Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2024

March 1, 2024 | Surface Water

The Qualification of Method EMON-SM-05-044 Revision 1 as Unequivocal According to the Pesticide Contamination Prevention Act

February 27, 2024 | Groundwater

Summary of Japanese Beetle Eradication Program Monitoring for Chlorantraniliprole in Sacramento Country, 2021-2023

February 21, 2024 | Pest Eradication

Study 329: Surface Water Monitoring for Pesticides in Urban Areas of Northern California during Water Year 2023-2024

February 1, 2024 | Surface Water

Final Report for Department of Pesticide Regulation (Contract No. 21-C0035)

January 5, 2024 | Surface Water

Study 321. Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2024

January 1, 2024 | Surface Water

Study 320: Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California during Water Year 2023-2024

December 1, 2023 | Surface Water

Study 319 Report: Monitoring of Dissolved Copper in California Coastal Waterbodies, 2022

November 1, 2023 | Surface Water

Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California

October 26, 2023 | Surface Water

Appendix B Technical Appendix to supplement Section 7: Application of Emission Ratios, Gaussian Plume Functions, and Meteorological Data in the Analysis of Use Concentration Relationships of 1,3-Dichloropropene

October 1, 2023 | Air

Study 322: Monitoring Pesticides in Wastewater Influent and Effluent (2024)

October 1, 2023 | Surface Water

Instructions for Cleaning Groundwater Sampling Equipment

August 11, 2023 | Groundwater

Sampling for Pesticide Residues in California Well Water 2022 Update

August 1, 2023 | Groundwater

Monitoring of 1,3-Dichloropropene in Fresno and Merced Counties: Results for 2022

August 1, 2023 | Air

Air Monitoring Network Results for 2022

July 1, 2023 | Air

Air Monitoring Network Results for 2021

July 1, 2023 | Air

Validating PREM Performance for Modeling Outdoor Uses of Pyrethroids in Residential Areas of California

June 7, 2023 | Surface Water

Preliminary Estimates of Volatile Organic Compound Emissions from Pesticides in the San Joaquin Valley: Emissions for 2021

June 7, 2023 | Air

Study 323: Groundwater Monitoring at a Flood-MAR Pilot Study Site near Helm, California

June 1, 2023 | Groundwater

STUDY 319: Monitoring of Dissolved Copper in California Coastal Marinas

June 1, 2023 | Surface Water

The Qualification of Method EMON-SM-05-034A Revision 4 As Unequivocal According to the Pesticide Contamination Prevention Act

May 16, 2023 | Groundwater

The Qualification of Method EMON-SM-05-051 As Unequivocal According to the Pesticide Contamination Prevention Act

May 16, 2023 | Groundwater

The Qualification of Method EM-SM-05-053 As Unequivocal According to the Pesticide Contamination Prevention Act

May 16, 2023 | Groundwater

The Qualification of Method EMON-SM-05-032 Revision 3 As Unequivocal According to the Pesticide Contamination Prevention Act

May 16, 2023 | Groundwater

The Qualification of Method EMON-SM-62.9 Revision 6 As Unequivocal According to the Pesticide Contamination Prevention Act

May 16, 2023 | Groundwater

Addendum: Modeling for Application Factors of 1,3-Dichloropropene, Revised Application Factors

May 16, 2023 | Air

Study 329: Surface Water Monitoring for Pesticides in Urban Areas of Northern California (WY 2022/2023)

May 1, 2023 | Surface Water

Analysis of S-Metolachlor, Metolachlor Ethanesulfonic Acid, Metolachlor Oxanilic Acid, Deschloro Metolachlor, and Hydroxy Metolachlor in Groundwater Revision 4

April 25, 2023 | Groundwater

Study 310: Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2023

April 1, 2023 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2021

March 24, 2023 | Surface Water

Surface Water Monitoring for Pesticides in Urban Areas of Northern California (FY2020/2021)

March 7, 2023 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2021

March 6, 2023 | Surface Water

Study 321. Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2023

March 1, 2023 | Surface Water

Study 334. Effects of Sampling Frequency on Storm Water Runoff Pesticide Characterization

March 1, 2023 | Surface Water

Determination of Metribuzin, Metribuzin Desamino, Metribuzin Diketo, and Metribuzin Desaminodiketo in Groundwater by Liquid Chromatography Electro Spray Ionization Mass Spectrometry

February 2, 2023 | Groundwater

Additional Information Regarding the Conduct of Thermogravimetric Analysis Data

January 5, 2023 | Air

2023 Status Report Pesticide Contamination Prevention Act

January 1, 2023 | Groundwater

Risks from Human Exposure to Chlorantraniliprole Residues in Groundwater

December 20, 2022 | Risk

Risks from Human Exposure to Flutriafol Residues in Groundwater

December 14, 2022 | Risk

Study 228: Monitoring the Concentrations of Detected Pesticides in Wells Located in Highly Sensitive Areas (Well Network Sampling) Annual Update 2021

December 1, 2022 | Groundwater

Study 318: Cooperative Groundwater Monitoring in Region 3 with the Central Coast Regional Water Quality Control Board

December 1, 2022 | Groundwater

Air Monitoring Network Results for 2020

December 1, 2022 | Air

Risks from Human Exposure to Diuron Residues in Groundwater

November 17, 2022 | Risk

Analysis of the Sufficiency of Acute Measures to Mitigate Cancer Risk to Non-Occupational Bystanders from 1,3-Dichloropropene

November 2, 2022 | Air

Study 322: Monitoring Pesticides in Wastewater Influent and Effluent FY22–23

November 1, 2022 | Surface Water

Planning, Conducting and Documenting Small-Scale Groundwater Monitoring Studies

October 27, 2022 | Groundwater

Analysis of Aminopyralid in Groundwater by Liquid Chromatography Triple Quadrupole Mass Spectrometry

October 14, 2022 | Groundwater

Review of Fumigation Worker Hours Survey: Methyl Isothiocyanate (Mitc) (Data Volume 50150-0170)

October 4, 2022 | Risk

Updates to HYDRUS-Simulated Flux Estimates of 1,3-Dichloropropene Maximum Period-Averaged Flux and Emission Ratios

September 22, 2022 | Air

Guideline to Determine Soil Water Content (Moisture) at Field Capacity

September 20, 2022 | Air

Analysis of High Barrier Tarpaulin CIS-1,3-Dichloropropene Mass Transfer Coefficient Data Measured Under High Relative Humidity Conditions

September 20, 2022 | Air

Analysis of High Barrier Tarpaulin CIS-1,3-Dichloropropene Mass Transfer Coefficient Data Measured Under High Relative Humidity Conditions

September 20, 2022 | Air

Modeling for Mitigation Measures to Reduce Acute Exposure from 1,3-Dichloropropene, Modeling Approach #2

September 12, 2022 | Air

Modeling for Mitigation Measures to Reduce Acute Exposure from 1,3-Dichloropropene, Modeling Approach #1

September 12, 2022 | Air

Modeling for the Township Cap of 1,3-Dichloropropene Applications, Modeling Approach #2

September 12, 2022 | Air

Modeling for Application Factors of 1,3-Dichloropropene, Modeling Approach #2

September 12, 2022 | Air

Study 320: Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California during Water Year 2022-2023

September 1, 2022 | Surface Water

Propanil Mitigation Scoping Document

August 22, 2022 | Risk

Pesticide Analysis by Gas Chromatography / Quadrupole Time-of-Flight Mass Spectrometry (GC/QToF)

August 5, 2022 | Surface Water

Pesticide Analysis by Liquid Chromatography Triple Quadrupole Mass Spectrometry (LC-MS-MS)

August 5, 2022 | Surface Water

Automated Solid-Phase Extraction (SPE) for Pesticides

August 5, 2022 | Surface Water

Study 310: Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2022

August 1, 2022 | Surface Water

Monitoring of 1,3-Dicloropropene in Merced and Fresno Counties Results for 2021

August 1, 2022 | Air

The Qualification of Method EMON-SM-05-034A Revision 2 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

July 12, 2022 | Groundwater

Study 319: Monitoring of Dissolved Copper in California Coastal Marinas

July 1, 2022 | Surface Water

Study 333: Protocol for Groundwater Protection List Monitoring for Methoxyfenozide, Chlorantraniliprole, and Flutriafol in High Use, Vulnerable Areas

July 1, 2022 | Groundwater

Air Monitoring Network Results for 2019

July 1, 2022 | Air

Methodology for Evaluating Pesticides for Surface Water Protection: Spatial Modeling for Aquatic Exposure Assessment

June 28, 2022 | Surface Water

Director’s Decision in Response to the Pesticide Registration and Evaluation Committee’s Subcommittee Findings and Recommendations Regarding Imidacloprid in Groundwater

June 16, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Findings and Recommendations by the Subcommittee of the Pesticide Registration and Evaluation Committee for the Pesticide Contamination Prevention Act Review Process for Imidacloprid

May 18, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Imidacloprid: Subcommittee Findings and Recommendations May 17, 2022

May 17, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2020

April 21, 2022 | Surface Water

Determination of Bromomethane, cis-1,3- Dichloropropene and trans-1,3-Dichloropropene in Air Samples Collected in Summa Canisters

April 15, 2022 | Air

Appendix 4 List of High-VOC, Low-VOC, and Excluded Non-Fumigant Products

April 8, 2022 | Air

The Qualification of Method EMON-SM-05-032 Revision 2 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

April 6, 2022 | Groundwater

Evidence Requested by the Subcommittee for Phase 2 of the Hearing on Imidacloprid Detections in Groundwater

April 1, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Sampling for Pesticide Residues in California Well Water 2021 Update

April 1, 2022 | Groundwater

Study GW18: Groundwater Protection List Monitoring for 2,4-Dichlorophenoxyacetic Acid Herbicide

April 1, 2022 | Groundwater

Methodology for Evaluating Pesticides for Surface Water Protection: Evaluation on Down-the-Drain Products

March 28, 2022 | Surface Water

Study 321. Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2022

March 1, 2022 | Surface Water

OEHHA’s Findings on the Health Effects of Imidacloprid Relevant to its Identification as a Potential Groundwater Contaminant

February 18, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

PCPA Imidacloprid Comments

February 18, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Pesticide Contamination Prevention Act (PCPA) Review Process for Imidacloprid

February 18, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Imidacloprid Registrants’ Report to the DPR in Response to DPR’s Letter Dated 23-Sept-2021; Notice of DPR’s Determination of Imidacloprid Detections in California Groundwater

February 18, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Summary of Imidacloprid Groundwater Detections in 2021

February 16, 2022 | Groundwater

PCPA Imidacloprid Review

February 16, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Subject: Pesticide Contamination Prevention Act (PCPA) review process – Imidacloprid

February 15, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Pesticide-Treated Seeds: Public Comments

February 15, 2022 | Surface Water

Pesticide Contamination Prevention Act (PCPA) Imidacloprid Review

February 10, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Subject: Imidacloprid Groundwater Detection – CA Pesticide Contamination Prevention Act (PCPA)

February 8, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Pesticide Contamination Prevention Act lmidacloprid Comments

February 8, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Imidacloprid Letter I Got from Nufarm

February 7, 2022 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Obtaining Well Water Samples

February 1, 2022 | Groundwater

Pesticide Illness Surveillance Program (PISP) Acronyms and Abbreviations

February 1, 2022 | Pesticide Illness Surveillance Program (PISP)

Pesticide Use Reporting – 2022 Summary Data

January 1, 2022 | Pesticide Use Report (PUR)

Pesticide Illness Surveillance Program (PISP) Data Dictionary

January 1, 2022 | Pesticide Illness Surveillance Program (PISP)

2021-2022 Status Report Pesticide Contamination Prevention Act

January 1, 2022 | Groundwater

2022 California Pesticide Residue Monitoring Program

January 1, 2022 | Residue

Annual Residue Data 2022

January 1, 2022 | Residue

Errata to “Legal Agricultural Use Determination for Imidacloprid Detections in California”

December 16, 2021 | Groundwater

Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2020

December 6, 2021 | Surface Water

Pesticide-Treated Seeds Questions for Stakeholders

November 15, 2021 | Surface Water

Pesticide-Treated Seed Public Workshop

November 15, 2021 | Surface Water

Study 332: Protocol for Characterizing the Relative Fate and Movement of Glyphosate, Bromacil, and Diuron in Leaching-Vulnerable Soils

November 1, 2021 | Groundwater

Study 300: Groundwater Monitoring for DCPA and Its Degradation Products MTP and TPA

October 1, 2021 | Groundwater

Annual Report on Volatile Organic Compound Emissions from Pesticides for 1990-2019

October 1, 2021 | Air

Request to Proceed with Pesticide Detection Response Process for Imidacloprid

September 16, 2021 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Pesticide Contamination Prevention Act Hearing Procedures for Certain Products Containing the Active Ingredient: Imidacloprid

September 12, 2021 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Revised Memorandum on Recalculation of Short-Term Handler and Reentry Worker Exposure Estimates for Propargite and Calculation of the Corresponding Margins of Exposure for Purposes of Mitigation (Memo Revised to Incorporate 3 CCR 6793 Personal Protective Equipment (PPE) Requirements into Handler Exposure Estimates)

September 8, 2021 | Risk

Standard Operating Procedure – Creating and Completing a Chain of Custody Record

September 2, 2021 | Groundwater

Legal Agricultural Use Determination for Imidacloprid Detections in California

September 1, 2021 | Groundwater

Study GW13a: Updated Protocol for Additional Groundwater Protection List Monitoring for Penoxsulam

September 1, 2021 | Groundwater

Study 330: Development of Passive Sampling Methods and Non-Target Screening of Agricultural Pesticides in Groundwater

September 1, 2021 | Groundwater

Monitoring of 1,3-Dicloropropene in Merced and Fresno Counties Results for 2020

September 1, 2021 | Air

Responses to Comments from External Peer Review of the California Department of Pesticide Regulation Toxicological Priority Index (TOXPI) Prioritization Framework for Pesticide Exposure and Risk Assessments

July 30, 2021 | Risk

Toxicological Priority Index (ToxPi) Prioritization Framework for Pesticide Exposure and Risk Assessments

July 30, 2021 | Risk

Annual Volatile Organic Compound Emissions Inventory Report: Emissions for 1990-2019

July 16, 2021 | Air

Study 321. Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2021

July 1, 2021 | Surface Water

Calculation of Pesticide Half-Life from a Terrestrial Field Dissipation Study

May 13, 2021 | Groundwater

Updated Risk from Human Exposure to Imidacloprid Residues in Well Water

April 13, 2021 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Clarifying the Meaning of “Comparable Language” in Title 3 Section 6746, Closed Mixing System Requirements

April 2, 2021 | Risk

Sampling for Pesticide Residues in California Well Water 2020 Update

April 1, 2021 | Groundwater

Study 228: Protocol for Monitoring the Concentration of Detected Pesticides in Wells Located in Highly Sensitive Areas (Well Network Study)

April 1, 2021 | Groundwater

Water-Quality Benchmarks for the Protection of Aquatic Life: A Review of Methodologies

March 23, 2021 | Surface Water

Pesticide Monitoring in Urban Areas of Northern California (FY2019/2020)

March 19, 2021 | Surface Water

Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California During Fiscal Year 2019–2020

March 4, 2021 | Surface Water

Study GW17/GW17A: Groundwater Protection List Monitoring for Imidacloprid

March 1, 2021 | Groundwater

Determination of Selected Pesticides Collected on XAD-4 Resin by Liquid Chromatography Tandem Mass Spectrometry (LC/MS/MS) and Gas Chromatography Mass Spectrometry (GC/MS)

February 24, 2021 | Air

Study 329: Surface Water Monitoring for Pesticides in Urban Areas of Northern California (FY 2020/2021)

February 16, 2021 | Surface Water

Request to Reprioritize Active Ingredients That Were Previously Prioritized and Noticed for Risk Assessment Initiation

January 15, 2021 | Risk

Pesticide Use Reporting – 2021 Summary Data

January 1, 2021 | Pesticide Use Report (PUR)

Pesticide Illness Surveillance Program – 2021 Annual Report

January 1, 2021 | Pesticide Illness Surveillance Program (PISP)

Air Monitoring Network Site Selection

December 9, 2020 | Air

Study 320: Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California during Fiscal Year 2020–2021

November 1, 2020 | Surface Water

Modeling Pesticide Removal Efficiency by Vegetative Filter Strip Under PWC Scenarios

October 26, 2020 | Surface Water

Preliminary Estimates of Volatile Organic Compound Emissions from Pesticides in the San Joaquin Valley: Emissions for 2019

October 2, 2020 | Air

Determination of 67 Pesticides in Surface Water by Triple Quadrupole Mass Spectrometry (LC-MS/MS)

September 4, 2020 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2019

August 24, 2020 | Surface Water

Study GW15: Groundwater Protection List Monitoring for Bentazon

August 1, 2020 | Groundwater

Procedure for Sampling Pesticide Application Equipment

July 28, 2020 | Pest Eradication

The Qualification of Method EM 62.9 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

July 16, 2020 | Groundwater

Results for the Environmental Monitoring of Imidacloprid and β-Cyfluthrin in the Asian Citrus Psyllid Eradication Program

July 9, 2020 | Pest Eradication

Determination of Chloropicrin by GC/MS

July 8, 2020

Summary of Japanese Beetle Eradication Program Monitoring for Chlorantraniliprole in Sacramento and Santa Clara Counties, 2016

June 10, 2020 | Pest Eradication

Study 310: Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2020

May 15, 2020 | Surface Water

Study 321. Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2020

May 1, 2020 | Surface Water

Towards Safer and More Sustainable Alternatives to Chlorpyrifos: An Action Plan for California

May 1, 2020 | Residue

Monitoring in Urban Areas in Northern California (FY 2018/2019)

April 16, 2020 | Surface Water

The Qualification of Method EMON-SM-05-044 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

April 9, 2020 | Groundwater

Summary of Results from the California Pesticide Illness Surveillance Program – 2017

April 7, 2020 | Pesticide Illness Surveillance Program (PISP)

The Qualification of Method EMON-SM-05-045 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

March 23, 2020 | Groundwater

Northern California Agricultural Monitoring, 2019

March 20, 2020 | Surface Water

Methodology for Evaluating Pesticides for Surface Water Protection: PREM Version 5 Updates

March 6, 2020 | Surface Water

The Qualifications of Method EMON-SM-05-041 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

February 21, 2020 | Groundwater

Title 3, California Code of Regulations, Section 6447(e) Requires That Tarpaulins Used for Methyl Bromide Soil Fumigations in California Shall Have a Permeability Factor Between 5 and 8 Milliliters Per Hour Per Square Meter Per 1000 PPM of Methyl Bromide at 30 Degrees Celsius and Be Approved by the Department

February 18, 2020 | Air

Approved Tarpaulins for Methyl Bromide Field Fumigations

February 18, 2020 | Air

Analysis of Glyphosate, Glufosinate and Aminomethylphosphonic Acid (AMPA) in Ground Water

February 6, 2020 | Groundwater

Sampling for Pesticide Residues in California Well Water 2019 Update

February 1, 2020 | Groundwater

Fumigation Recommendations for Select Harvest U.S.A. Facility in Turlock, CA

January 27, 2020 | Risk

Determination of 1,3-dichloropropene (Telone) Absorbed on Charcoal

January 14, 2020 | Air

Determination of Selected Rice Herbicides in Groundwater

January 9, 2020 | Groundwater

Study 328: Protocol for Follow-Up Groundwater Monitoring of Fludioxonil

January 1, 2020 | Groundwater

Pesticide Use Reporting – 2020 Summary Data

January 1, 2020 | Pesticide Use Report (PUR)

Pesticide Illness Surveillance Program – 2020 Annual Report

January 1, 2020 | Pesticide Illness Surveillance Program (PISP)

Annual Residue Data 2020

January 1, 2020 | Residue

Completion of Diquat Dibromide Mitigation for Swimmer Exposure

December 16, 2019 | Risk

SWPP Pesticide Registration Evaluation Model (PREM) User Manual

December 9, 2019 | Surface Water

Surface Water Monitoring of B-Cyfluthrin Used in the Asian Citrus Psyllid Treatments Near Surface Water

November 25, 2019 | Surface Water

Air Monitoring Network Results for 2018

November 1, 2019 | Air

A Comparison Between Field-Estimated and HYDRUS-Simulated Emission of 1,3-Dichloropropene from Agricultural Fields

October 17, 2019 | Air

AERFUM: An Integrated Air Dispersion Modeling System for Soil Fumigants

October 17, 2019 | Air

Evaluating AERMOD for Simulating Ambient Concentrations of 1,3-Dichloropropene

October 17, 2019 | Air

Calculation of 1,3-D Application Factors Based on HYDRUS Flux Estimates

October 17, 2019 | Air

Options to Mitigate Acute Exposures to 1,3‐Dichloropropene

October 17, 2019 | Risk

HYDRUS-simulated flux estimates of 1,3-dichloropropene maximum period-averaged flux and emission ratio for approved application methods

October 17, 2019 | Air

Standard Operating Procedure – Chemistry Laboratory Quality Control

October 4, 2019 | Groundwater

Study GW17A: Protocol for Additional Groundwater Protection List Monitoring for Imidacloprid

October 1, 2019 | Groundwater

Study 320: Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California during Fiscal Year 2019–2020

October 1, 2019 | Surface Water

Study 303. Source Identification of Bifenthrin in Placer County

September 17, 2019 | Surface Water

Effect of Pre-Application Soil Moisture on Emissions of 1,3-Dichloropropene

September 11, 2019 | Air

Comparing Emissions from Simulated 18 Inch and 24 Inch Shank Injection Treatments of 1,3-Dichloropropene

September 11, 2019 | Air

Simulation of 1,3-Dichloropropene Emissions for a Broadcast Application with Partial Low Permeability Film Surface Cover

September 11, 2019 | Air

TGA Data Submission Form

September 6, 2019 | Air

Preliminary Estimates of Volatile Organic Compound Emissions from Pesticides in the San Joaquin Valley: Emissions for 2018

September 6, 2019 | Air

Study 299: Pesticide Monitoring in Urban Areas of Northern California (FY 2019/2020)

September 1, 2019 | Surface Water

Study #325: Protocol for Analysis of Neonicotinoid and Fungicide Concentrations in Soil Cores from Treated Lettuce Fields

September 1, 2019 | Groundwater

Summary of Results from the California Pesticide Illness Surveillance Program – 2016

August 28, 2019 | Pesticide Illness Surveillance Program (PISP)

Study 322: Monitoring Pesticides in Wastewater: Influent, Effluent and Biosolids 2019– 2020

August 1, 2019 | Surface Water

Toxic Air Contaminant Program Monitoring Results for Methyl Bromide and 1,3-Dichloropropene 2011-2018

July 1, 2019 | Air

Monitoring of 1,3-Dicloropropene in Merced and Fresno Counties Results for 2018

July 1, 2019 | Air

Study 310: Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2019

June 28, 2019 | Surface Water

2019 Implementation Plan

June 18, 2019 | Surface Water

2019 Management Agency Agreement Management Agency Agreement Between the State Water Resources Control Board and the Department of Pesticide Regulation

June 18, 2019 | Surface Water

Study 319: Monitoring of Dissolved Copper in California Coastal Marinas

June 1, 2019 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2018

May 28, 2019 | Surface Water

Standard Operating Procedure – Determination of Soil Water Characteristic Curve Using 15 Bar Ceramic Plate Extractor

May 28, 2019 | Air

The Qualification of Method EMON-SM-05-037 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

May 21, 2019 | Groundwater

Data Dictionary for DPR’s Air Monitoring Results Database

May 3, 2019 | Air

Study #318 Protocol for Cooperative Groundwater Monitoring in Region 3 with the Central Coast Regional Water Quality Control Board

May 1, 2019 | Groundwater

Study #323: Protocol for Groundwater Monitoring at a Flood-MAR Pilot Study Site Near Helm, California

May 1, 2019 | Groundwater

Field Fumigation Methods Allowed, by Geographic Area

May 1, 2019 | Air

Potential for Carbaryl Movement to California Groundwater as a Result of Agricultural Use

April 19, 2019 | Groundwater

Potential for Methomyl Movement to California Groundwater as a Result of Agricultural Use

April 9, 2019 | Groundwater

Potential for Chlorothalonil Movement to California Groundwater as a Result of Agricultural Use

April 3, 2019 | Groundwater

Study #326: Protocol for Study to Test Effect of Sample Port Location and Pump Run Time on Integrity of Groundwater Samples

April 1, 2019 | Groundwater

Northern California Agricultural Monitoring

March 20, 2019 | Surface Water

Modeling 1,3-Dichloropropene Applications at Parlier, CA on October 9, 2018

March 15, 2019 | Air

Sample Quality Assurance Project Plan for the Collection and Analysis of Pesticide Ambient Air Monitoring Data

March 1, 2019 | Air

Urban Monitoring in Southern California Watersheds FY 2017-2018

March 1, 2019 | Surface Water

Study 321. Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2019

March 1, 2019 | Surface Water

2017 Seasonal Ambient Monitoring for the Pesticide Active Ingredients Methyl Bromide and Chloropicrin in Siskiyou County

February 15, 2019 | Air

Study 228: Monitoring the Concentrations of Detected Pesticides in Wells Located in Highly Sensitive Areas (Well Network Sampling) Annual Update 2019

January 1, 2019 | Groundwater

Pesticide Illness Surveillance Program – 2019 Annual Report

January 1, 2019 | Pesticide Illness Surveillance Program (PISP)

Pesticide Use Reporting – 2019 Summary Data

January 1, 2019 | Pesticide Use Report (PUR)

Pyrethroid Outreach To Structural Pest Management Professionals

December 17, 2018 | Surface Water

Director’s Decision in Response to the Pesticide Registration and Evaluation Committee’s Subcommittee Findings Regarding the Detection of Chlorthal-Dimethyl Degradation Products in Ground Water

December 10, 2018 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Chlorthal-Dimethyl Findings by the Subcommittee of the Pesticide Registration and Evaluation Committee

November 13, 2018 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Imidacloprid Monitoring in Urban Surface Waters of California, USA

November 8, 2018 | Surface Water

Management Options for Reducing Pesticide Concentrations in Urban Runoff

November 6, 2018 | Surface Water

Field Spikes for Air Monitoring Studies

November 2, 2018 | Air

Air Monitoring Network Results for 2017

November 1, 2018 | Air

Preliminary Estimates of Volatile Organic Compound Emissions from Pesticides in the San Joaquin Valley: Emissions for 2017

October 5, 2018 | Air

Effects of Tank-Mix Properties on Pesticide Off-Site Drift from Aerial Applications

September 27, 2018 | Risk

Standard Operating Procedure – Determination of Soil Water Characteristic Curve Using 5 Bar Ceramic Pressure Plate Extractor

September 26, 2018 | Air

Director’s Proposed Determination Concerning Chlorpyrifos as a Toxic Air Contaminant

August 24, 2018 | Air

Calculation of Eight-Hour Maximum Methyl Isothiocyanate Flux from Dazomet Applications

August 18, 2018 | Air

Modeling a 1,3-Dichloropropene Application at Shafter, CA on January 21, 2018

August 6, 2018 | Air

Study 299: Monitoring in Urban Areas in Northern California (FY 2018/2019)

August 1, 2018 | Surface Water

Modeling a 1,3-Dichloropropene Application at Parlier, CA on September 19, 2017

July 12, 2018 | Air

Study 270: Ambient Surface Water and Mitigation Monitoring in Urban Areas in Southern California During Fiscal Year 2018–2019

July 1, 2018 | Surface Water

Monitoring of 1,3-Dichloropropene in Merced and Fresno Counties: Results for 2019

July 1, 2018 | Air

Monitoring of 1,3-Dichloropropene in Merced and Fresno Counties: Results for 2016-2017

July 1, 2018 | Air

Potential for Cyfluthrin Movement to California Ground Water as a Result of Agricultural Use

June 27, 2018 | Groundwater

Addressing the Recovery of MITC from Charcoal Tubes

May 9, 2018 | Air

Survey of Pesticide Products Sold in Retail Stores in Northern California, 2017

May 9, 2018 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas in the Central Coast and Southern California, 2017

May 3, 2018 | Surface Water

Study GW18: Protocol for Groundwater Protection List Monitoring for 2,4-Dichlorophenoxyacetic Acid Herbicide

May 1, 2018 | Groundwater

Summary of Results from the California Pesticide Illness Surveillance Program – 2015

April 10, 2018 | Pesticide Illness Surveillance Program (PISP)

Acephate: Acute Reference Dose (RfD) and Reference Concentration (RfC) Determinations

March 20, 2018 | Risk

Study 317: Protocol to Use Soil and Water Assessment Tool (SWAT) to Assess Pesticide Runoff from the Central California Coastal Watershed

March 9, 2018 | Surface Water

Study 315: Protocol to Develop a Down-the-Drain Model for Pesticide Registration Evaluation in California

February 23, 2018 | Surface Water

Legal Agricultural Use Determination for DCPA Degradate Detections in California

January 18, 2018 | Groundwater

Pesticide Use Reporting – 2018 Summary Data

January 1, 2018 | Pesticide Use Report (PUR)

Medical Supervision for Organophosphate and Carbamate Pesticide Handlers

January 1, 2018 | Pesticide Illness Surveillance Program (PISP)

Study 228: Monitoring the Concentrations of Detected Pesticides in Wells Located in Highly Sensitive Areas (Well Network Sampling) Annual Update 2018

January 1, 2018 | Groundwater

Request to End the Reevaluation of Diazinon

December 15, 2017 | Surface Water

Federal Nonattainment Areas (NAAs) Affected by California Regulations to Reduce Volatile Organic Compound (VOC) Emissions from Pesticides

December 1, 2017 | Air

Standard Operating Procedure – Ambient Urban Monitoring Methodology for Surface Water Protection

December 1, 2017 | Surface Water

Air Monitoring Network Results for 2016

December 1, 2017 | Air

Study 240: Monitoring Ground Water in Sections with Reported Detections Outside Existing Ground Water Protection Areas

November 17, 2017 | Groundwater

Modeling Pyrethroid Uses and Conservation Practices in agricultural areas of California

November 13, 2017 | Surface Water

2017 Update in Thiobencarb Contamination in Sacramento Valley

October 26, 2017 | Surface Water

Advanced Processing of Pesticide Use Reports for Data Analysis Conducted by the Environmental Monitoring Branch’s Air Program

October 12, 2017 | Air

Meteorological Data Processing for ISCST3 and AERMOD

October 11, 2017 | Air

Comparison of USEPA and DPR Modeling Approaches and Validation Procedures to Predict Drinking Water Concentrations of Pesticide Residues for Use in Human Health Risk Assessments.

September 26, 2017 | Groundwater

The Qualification of Method EMON-SM-05-040 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

September 7, 2017 | Groundwater

Study 308: Interim Report on SeaMist Farms Woodchip Bioreactor

September 1, 2017 | Surface Water

Modeling Bifenthrin Outdoor Uses in Residential Areas of California, II. Review of the Recent Modeling Studies by USEPA/EFED, PWG, and CDPR/SWPP

August 30, 2017 | Surface Water

Soil and Water Requirements for Conducting Pesticide Terrestrial Field Dissipation Studies as Required by the California Pesticide Contamination Prevention Act

August 29, 2017 | Groundwater

Study 270 (2017-18): Ambient and Mitigation Monitoring in Urban Areas in Southern California During Fiscal Year 2017–2018

August 1, 2017 | Surface Water

Completion of Mitigation for Methyl Bromide Field Soil Fumigations

July 28, 2017 | Risk

The Qualification of Method EM-5.5 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

July 26, 2017 | Groundwater

Director’s Response Concerning Detections of Metolachlor/s-Metolachlor Degradates in Groundwater of the State

July 17, 2017 | Pesticide Contamination Prevention Act (PCPA) Groundwater

U.S. Environmental Protection Agency Preliminary Aquatic Ecological Risk Assessment to Support the Registration Review of Imidacloprid (Case #7605, Docket Identification #EPA-HQ-OPP-2008-0844

July 5, 2017 | Surface Water

U.S. Environmental Protection Agency Ecological Risk Assessment and Registration Review of Pyrethroids and Pyrethrins (Bifenthrin, Cyfluthrins (& Beta), Cypermethrin (Alpha & Zeta), Cyphenothrin, D-Phenothrin, Deltamethrin, Esfenvalerate, Etofenprox, Fenopropathrin, Flumethrin, Gamma-Cyhalothrin, Imiprothrin, Lambda-Cyhalothrin, Momfluorothrin, Permethrin, Prallethrin, Pyrethrins, Tau-Fluvalinate, Tefluthrin, Tetramethrin) (Docket Identification Numbers: EPA-HQ-OPP-2010-0384, EPA-HQ-OPP-2010 0684, EPA-HQ-OPP-2012-0167, EPA-HQ-OPP-2009-0842, EPA-HQ-OPP-2011-0539, EPA HQ-OPP-2009-0637, EPA-HQ-OPP-2009-0301, EPA-HQ-OPP-2007-0804, EPA-HQ-OPP 2010-0422, EPA-HQ-OPP-2016-0031, EPA-HQ-OPP-2010-0479, EPA-HQ-OPP-2011-0692, EPA-HQ-OPP-2010-0480, EPA-HQ-OPP-2015-0752, EPA-HQ-OPP-2011-0039, EPA-HQ OPP-2011-1009, EPA-HQ-2011-0885, EPA-HQ-OPP-2010-0915, EPA-HQ-OPP-2012-0501, EPA-HQ-OPP-2011-0907)

July 5, 2017 | Surface Water

Study 314. Pesticide Mitigation through a Woodchip Bioreactor at Jim May Park, Santa Maria, CA

July 1, 2017 | Surface Water

Metolachlor/s-Metolachlor Findings by the Subcommittee of the Pesticide Registration and Evaluation Committee

June 20, 2017 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Potential for Propyzamide Movement to California Ground Water as a Result of Agricultural Use — Model Simulations and Results

June 20, 2017 | Groundwater

Modeling Bifenthrin Outdoor Uses in Residential Areas of California

May 26, 2017 | Surface Water

Air Temperature Distribution Inside the Enclosures of Air Monitoring Network Located in Ripon, Salinas and Shafter.

March 16, 2017 | Air

Part 1: ISCST3 Data Preparation from CIMIS Weather Station Data

March 1, 2017 | Air

Methodology for Prioritizing Areas of Interest for Surface Water Monitoring of Pesticides in Urban Receiving Waters of California

February 15, 2017 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas of California, 2016

February 15, 2017 | Surface Water

Summary of Japanese Beetle Eradication Program Monitoring for Carbaryl, Imidacloprid and Cyfluthrin in Sacramento County, 2015

February 14, 2017 | Pest Eradication

Simulated Emission Ratings for Rototill and Soil Capping Applications of Metam Products

February 14, 2017 | Air

Air Monitoring Network Results for 2015 Volume 5

February 1, 2017 | Air

The Counties and Meridians of California

January 1, 2017 | Groundwater

Pesticide Use Reporting – 2017 Summary Data

January 1, 2017 | Pesticide Use Report (PUR)

Study 228: Monitoring the Concentrations of Detected Pesticides in Wells Located in Highly Sensitive Areas (Well Network Sampling) Annual Update 2017

January 1, 2017 | Groundwater

Correlating Agricultural Use with Ambient Concentration of 1,3-Dichloropropene During the Period of 2011-2014

December 15, 2016 | Air

Summary of Results from the California Pesticide Illness Surveillance Program – 2014

December 14, 2016 | Pesticide Illness Surveillance Program (PISP)

Study #309: Monitoring of 1,3-Dichloropropene in Merced and Fresno Counties

December 12, 2016 | Air

Ambient Monitoring in Urban Areas in Northern California

November 28, 2016 | Surface Water

Urban Monitoring in Southern California Watersheds FY 2015-2016

November 10, 2016 | Surface Water

Correlating Agricultural Use with Ambien Air Concentrations of Methyl Bromide During the Period of 2011-2014.

October 17, 2016 | Air

Methodology for Evaluating Pesticides for Surface Water Protection: Pesticide Degradates

October 5, 2016 | Surface Water

Methodology for Evaluating Pesticides for Surface Water Protection: Urban Pesticide Uses

October 5, 2016 | Surface Water

Metolachlor Task Force

October 3, 2016 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Use Information and Air Monitoring Recommendation for the Active Ingredient Chloropicrin in California.

October 1, 2016 | Air

Guidance for Evaluating Cases of Detection of DDT (1,1,1-trichloro-2,2-bis(4-chlorophenyl)ethane) on Commodities That Are Not Covered by Food and Drug Administration (FDA) Action

September 21, 2016 | Risk

Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California

September 9, 2016 | Surface Water

Mitigation of Pesticide Runoff Using a Bioreactor in Santa Maria Valley

September 1, 2016 | Surface Water

Characterizing Solute Movement in Coarse-Textured, Leaching-Vulnerable Soils within Zero-Tension Column Lysimeters

September 1, 2016 | Groundwater

Report 293 – Part I: Developing a California-Based Receiving Waterbody Model for Pesticide Product Registration Evaluation: Review of Model Theory

August 23, 2016 | Surface Water

Evaluation of Chloropicrin Buffer Zone Credits Under California Use Conditions

August 5, 2016 | Air

Standard Operating Procedure – Analysis of Whole Sample Suspended Sediments in Water

August 5, 2016 | Surface Water

Linearity of Chloropicrin Buffer Zone Distances with Flux

July 12, 2016 | Air

Withdrawal of Notice of Alachlor Degradation Product Residue Detections in California Ground Water and Registrant Opportunity to Request a Hearing

May 9, 2016 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Surface Water Monitoring for Pesticides in Agricultural Areas of California, 2015

April 22, 2016 | Surface Water

Legal Agricultural Use Determination for Metolachlor/s-Metolachlor Degradate Detections in California

April 12, 2016 | Groundwater

Legal Agricultural Use Determination for Metolachlor/S-Metolachlor Degradate Detections in California

April 12, 2016 | Groundwater

Exposure Assessment Policy and Procedure – An Update to Default Transfer Coefficients

March 30, 2016 | Risk

Correlating Agricultural Use with Ambient Air Concentrations of Methyl Isothiocyanate During the Period of 2011–2014

March 29, 2016 | Air

Methodology for Screening Pesticide Products with High Exposure Potentials to Marine/Estuarine Organisms

March 25, 2016 | Surface Water

The Qualification of Method EM-38.0-Modified as Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

March 22, 2016 | Groundwater

Notice of Alachlor Degradation Product Residue Detections in California Ground Water and Registrant Opportunity to Request a Hearing

March 21, 2016 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Correlating Agricultural Use with Ambient Air Concentrations of Chlorpyrifos And Chlorpyrifos-Oxon During the Period of 2011-2014

March 2, 2016 | Air

Standard Operating Procedure – Sediment TOC Analysis Using Shimadzu TOC-VCSN and SSM-5000A

February 29, 2016 | Surface Water

Correlating Agricultural Use with Ambient Air Concentrations of Chlorthal-dimethyl During the Period of 2011–2014

February 17, 2016 | Air

Fipronil Monitoring and Model Scenarios

February 16, 2016 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas of California, 2016

February 15, 2016 | Surface Water

Legal Agricultural Use Determination for Alachlor Degradate Detections in California

February 9, 2016 | Groundwater

The Qualification of Method EMON-SM-05-032 As Unequivocal According to Criteria in the Pesticide Contamination Prevention Act

February 9, 2016 | Groundwater

Urban Monitoring in Southern California Watersheds FY 2014-2015

January 13, 2016 | Surface Water

Evaluation of 2014 Use Data for 1,3-Dichloropropene Submitted by DOW Agrosciences

January 5, 2016 | Pesticide Use Report (PUR)

Study 228: Monitoring the Concentrations of Detected Pesticides in Wells Located in Highly Sensitive Areas (Well Network Sampling) Annual Update 2016

January 1, 2016 | Groundwater

Correlating Agricultural Use with Ambient Concentration of Fumigant Chloropicrin During the Period of 2011-2014

December 31, 2015 | Air

Analysis of High Barrier Tarpaulin Chloropicrin Mass Transfer Data Measured Under High Relative Humidity Conditions

December 21, 2015 | Air

Estimation of Chlorpyrifos Horizontal Deposition and Air Concentrations for California Use Scenarios

December 16, 2015 | Risk

Guidelines for Developing and Manufacturing a Closed System Compliant with the Requirements of Title 3 California Code of Regulations Section 6746

November 16, 2015 | Risk

Review of the SeawaveQ Model and Challenges of its Application in California

November 1, 2015 | Surface Water

Summary of Indoor Air Monitoring for Sulfuryl Fluoride Structural Fumigations

October 19, 2015 | Air

Evaluation of Three Models for Simulating Pesticide Runoff from Irrigated Agricultural Fields

October 1, 2015 | Surface Water

Air Monitoring Network Results for 2014

October 1, 2015 | Air

Retail Store Survey of Consumer-Use Indoor Pesticide Products, 2014

September 18, 2015 | Surface Water

Surface Water Monitoring for Pesticides in Agricultural Areas of California, 2011-2012

August 25, 2015 | Surface Water

Evaluation of the Air Dispersion Modeling Tool SOFEA2

August 12, 2015 | Air

Summary of Japanese Beetle Eradication Program Monitoring for Carbaryl, Imidacloprid and Cyfluthrin in Sacramento County, 2011 (Study # JB 258)

July 23, 2015 | Pest Eradication

Variability in Simulated Chloropicrin and 1,3- Dichloropropene Volatilization From Bare Ground Broadcast Applications

July 20, 2015 | Air

AERMOD Modeling for Two Air Monitoring Studies of Structural Fumigation with Sulfuryl Fluoride

July 16, 2015 | Air

Surface Water Monitoring for Pesticides in Agricultural Areas of California, 2014

June 5, 2015 | Surface Water

Study 269 (FY2013-2014). Urban Monitoring in Roseville and Folsom, California

May 8, 2015 | Surface Water

Urban Monitoring in Southern California Watersheds FY 2011-2014

May 8, 2015 | Surface Water

Further Characterization Of Sacramento, California Area Urban Neighborhoods. Addendum for Fiscal Year 2011-2012

April 30, 2015 | Surface Water

Surface Water and Sediment Monitoring in 2012-2013

April 30, 2015 | Surface Water

Tarpaulins Used for Chloropicrin Permit Conditions

April 8, 2015 | Air

Reducing Smog-Producing Emissions from Nonfumigant Pesticide Products

April 1, 2015 | Air

Description of the Method Used to Expand the Chloropicrin Buffer Zone Tables

March 24, 2015 | Air

Methodology for Prioritizing Pesticides for Surface Water Monitoring in Agricultural and Urban Areas III: Watershed-Based Prioritization

March 19, 2015 | Surface Water

Review of Fipronil Mitigation Strategies for the Protection of Surface Water

January 15, 2015 | Surface Water

Air Monitoring Network Results for 2013

December 1, 2014 | Air

SWPP Registration Evaluation Model User Manual

October 2, 2014 | Surface Water

Evaluation of Soil Bulk Density and Soil Water Status in Field Study Entitled “Direct Flux Determination of Chloropicrin Emissions from Shank, Bedded, Non-Tarped Applications”, Document #0199-0137

September 22, 2014 | Air

Pyrethroids in Wastewater: Review of Potential Sources, Occurrence, and Fate

August 27, 2014 | Surface Water

Evaluation of “2013 Pesticide Use Data of Adjusted Pounds 1,3-Dichloropropene in California,” Submitted by Dow AgroSciences on 04/25/14

August 21, 2014 | Pesticide Use Report (PUR)

Comparison of One-Year Township Monitoring Results from Merced to SOFEA Simulation Results

August 20, 2014 | Air

Review of Representative Currently Registered Fipronil Product Labels in California

August 1, 2014 | Surface Water

Survey of Ambient Air Levels of Sulfuryl Fluoride (Protocol A & B)

July 28, 2014 | Air

Review of Fipronil Mitigation Strategies for the Protection of Surface Water

July 15, 2014 | Surface Water

Methodology for Prioritizing Pesticides for Surface Water Monitoring in Agricultural and Urban Areas II: Refined Priority List

July 1, 2014 | Surface Water

Calculations of Use Adjustment Factors for 1,3-Dichloropropene with the Use of Totally Impermeable Film for Strip Shank Applications

June 30, 2014 | Air

DPR’s Chloropicrin Tarpaulin List

June 20, 2014 | Air

HYDRUS Estimates of Cumulative 1,3-Dichloropropene and Chloropicrin Emissions from Low Permeability Tart Strip Applications

June 3, 2014 | Air

How to Calculate the Application Factor for New 1,3-Dichloropropene Application Methods

May 8, 2014 | Air

Soil Bulk Density Determination Using the Eijkelkamp Soil Sampler

February 18, 2014 | Groundwater

Results for Study GW10A: Ground Water Protection List Monitoring for Azoxystrobin, Chlorothalonil, Dichloran, and Iprodione

October 28, 2013 | Groundwater

Guidelines for Identifying Pesticides to be Added to and Removed from the Groundwater Protection List: Title 3, California Code of Regulations Section 6800(B)

October 22, 2013 | Groundwater

Re-evaluation of Developmental and Reproductive Toxicity of OrthoPhenylphenol (OPP) and Sodium Ortho-Phenylphenate (SOPP)

October 3, 2013 | Risk

Air Monitoring Network Results for 2012

October 1, 2013 | Air

Time Series Analysis and Forecasting of Volatile Organic Compound Emissions from Nonfumigant Pesticides Use in San Joaquin Valley During the Ozone Season

July 29, 2013 | Air

Standard Operating Procedure – Water TOC Analysis Using the Shimadzu TOC-VCSN and ASI-V Autosampler

July 26, 2013 | Surface Water

Methodology for Prioritizing Pesticides for Surface Water Monitoring in Agricultural and Urban Areas

May 28, 2013 | Surface Water

Analysis of 1,3-Dichloropropene Emissions for Field One in the Lost Hills Study Considering High Flux Densities from the Bare Ground Near the Tarp Edge

May 8, 2013 | Air

Human Pesticide Exposure Assessment – Simazine

May 6, 2013 | Risk

Calculation of Use Adjustment Factors for 1,3-Dichloropropene with the Use of Totally Impermeable Film for Broadcast Shank Applications

April 26, 2013 | Air

Effect of Chloropicrin Application Practices on Cumulative and Maximum Chloropicrin Flux

March 20, 2013 | Air

Air Monitoring Network Results for 2011 Volume 1

March 1, 2013 | Air

HYDRUS Simulation of Chloropicrin and 1,3-Dichloropropene Transport and Volatilization in the Lost Hills Fumigation Trials

February 8, 2013 | Air

Time Series Analysis and Forecasting of Ventura County Nonfumigant Pesticide Volatile Organic Compound Ozone Season Emissions-2012 Update

January 28, 2013 | Air

Stochastic Evaluation of Back Calculation Procedures for Estimating Flux Using Data from the Lost Hills Study

January 18, 2013 | Air

Evaluation of Solar Panels’ Ability to Charge Battery-Powered Air Sampling Pumps

January 18, 2013 | Air

Preliminary Look at the Relationship Between Maximum Air Temperature and Maximum 15CM Soil Temperature Based on the California Irrigation Management Information Systems Station Data

January 2, 2013 | Air

Reanalysis of Lost Hills Data for Consistency and Error Detection

December 4, 2012 | Air

Results for the Monitoring of Imidacloprid and Cyfluthrin Used in the Asian Citrus Psyllid Eradication Program in Imperial County (Study #258)

October 30, 2012 | Pest Eradication

Results for the Monitoring of Imidacloprid and Cyfluthrin Used in the Asian Citrus Psyllid Eradication Program in Los Angeles County (Study #258)

October 24, 2012 | Pest Eradication

Results for the Monitoring of Imidacloprid and Cyfluthrin Used in Asian Citrus Psyllid Eradication Program in San Diego County (Study #258)

October 24, 2012 | Pest Eradication

Details of HYDRUS Modeling of Shank Trace Sampling Results

August 21, 2012 | Air

Evaluating Analytical Methods for Compliance with the Pesticide Contamination Prevention Act Requirements

July 10, 2012 | Groundwater

Reassessment of Nonspatial Fractions in the VOC Inventory

June 29, 2012 | Air

Final Report on Pesticide Air Monitoring Near Application of Chlorthal-Dimethyl In Monterey County, April 2011

June 6, 2012 | Air

Study GW 09: Ground Water Protection List Monitoring for Metolachlor and Alachlor

June 1, 2012 | Groundwater

Standard Operating Procedure – Methodology for Evaluating Pesticides for Surface Water Protection

March 15, 2012 | Surface Water

A Method for Estimating Near-Field Air Concentrations Following Tarp Cutting for Broadcast Applications

March 9, 2012 | Air

Monitoring Results of Imidacloprid Applications for Glassy Winged Sharpshooter Control in Residential Area of San Luis Obispo County

March 1, 2012 | Pest Eradication

Study 277: Pesticide Runoff from a California Alfalfa Field—a Field Study

February 15, 2012 | Surface Water

Methodology for Evaluating Pesticides for Surface Water Protection I: Initial Screening

January 26, 2012 | Surface Water

Methodology for Evaluating Pesticides for Surface Water Protection II: Refined Modeling

January 26, 2012 | Surface Water

Determination if California Department of Food and Agriculture’s Linuron, Isoxaben, Mefenoxam, Methomyl and Propyzamide Method (EMON-SM-05-025) Meets the “Unequivocal Detection” Criteria

January 5, 2012 | Groundwater

Compilations of Studies Estimating Near Surface Concentrations of 1,3-Dichloropropen or Chloropicrin

December 6, 2011 | Air

Results for Study GW08: Ground Water Protection List Monitoring for Tebuthiuron

November 10, 2011 | Groundwater

Time Series Analysis and Forecasting of Ventura County Nonfumigant Pesticide Volatile Organic Compound Ozone Season Emissions-2011 Update

November 1, 2011 | Air

Director’s Response Concerning Detections of Hexazinone Pursuant to Assembly Bill 2021

September 7, 2011 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Criteria for Establishing Ground Water Protection Areas

August 29, 2011 | Groundwater

Standard Operating Procedure – Preparation of a Field Blank Sample

August 29, 2011 | Groundwater

Study 310: Surface Water Monitoring for Pesticides in Agricultural Areas of Northern California, 2021

July 26, 2011 | Surface Water

Part 2: Processing CIMIS Meteorological Files to Produce ISCST3-Ready Weather Files: Technical Manual

July 1, 2011 | Air

Review and Evaluation of Pesticide Modeling Approaches in Rice Paddies

June 29, 2011 | Surface Water

Development of Flux Profiles for New Chloropicrin Application Methods

May 18, 2011 | Air

Collocation of Passive Canister Samplers with 1,3-Dichloropropene Area Monitoring by Dow AgroSciences in Merced County

April 1, 2011 | Air

Review of Raven Film Permeability Tests

March 23, 2011 | Air

Study Requirements for Film Permeability Measurements

March 4, 2011 | Air

Detailed Emission Potential Calculations of High Use Pesticide Products Using a Confidential Statement of Formula Based Method

February 9, 2011 | Air

Simulation of Three Untarped 1,3-Dichloropropene Flux Studies Using HYDRUS

January 31, 2011 | Air

Assessing the Runoff Potential of Diuron Following Application to Irrigation Canal Access Roads in Fresno County

December 13, 2010 | Surface Water

Study 262. Long-term Pesticide Monitoring in High-Use Agricultural Areas, Year Three.

May 28, 2010 | Surface Water

Fumigant Transport Modeling Using HYDRUS: 4. Development and Testing of Modifications to Enhance Fumigant Field Simulations

May 6, 2010 | Air

Documentation for WEATH6A Meteorological Data Processing Program

April 29, 2010 | Air

Fumigant Transport Modeling Using Hydrus: 3. Selection, Temperature Dependence and Sensitivity Analysis of Fumigant Physicochemical Properties

March 26, 2010 | Air

Review of the “Generic Verification Protocol for the Verification of Pesticide Spray Drift Reduction Technologies for Row and Field Crops”

March 10, 2010 | Air

Methodology to Determine Methyl Bromide Use Cap

February 23, 2010 | Air

Time Series Analysis and Forecasting of Ventura County Nonfumigant Pesticide Volatile Organic Compound Ozone Season Imissions-2009 Update

December 23, 2009 | Air

Subchronic 1,3-Dichloropropene Air Concentration Estimates

December 17, 2009 | Air

Calculation of Screening Concentrations for 1,3-Dichloropropene

December 2, 2009 | Air

GW 09: Ground Water Monitoring for Imidacloprid and Four Degradates in High Use Areas in California

December 1, 2009 | Groundwater

Proposed Modifications in HYDRUS (1, 2/3D) Software to Enhance Modeling Solute Diffusion and Gaseous Diffusion in Soils

November 30, 2009 | Air

Report of Parlier SOFEA-HEE5CB Simulation

November 19, 2009 | Air

Analysis of Sampling Intensity for Proposed Air Monitoring Network Based on Pesticide Monitoring Data from Parlier, California

November 9, 2009 | Air

Study: Comparison of Soil Bulk Density Within and Without ‘Shank Trace’ Soil Zones

August 1, 2009 | Surface Water

Time Series Analysis and Forecasting of Ventura Country Nonfumigant Pesticide Volatile Organic Compound Emissions

July 16, 2009 | Air

Modification of the Probabilistic Modeling Approach to Predict Well Water Concentrations Used for Assessing the Risk of Groundwater Contamination by Pesticides

May 7, 2009 | Groundwater

Standard Operating Procedure – Grinding Procedure for Sediment or Soil Samples

April 15, 2009 | Groundwater

Preliminary Evaluation of DOW Agrosciences Proposed Update to the California Management Plan: 1,3-Dichloropropene (July 15, 2008)

January 29, 2009 | Air

Dominant Soil Types Associated with Fumigant Applications in Ozone Nonattainment Areas

January 23, 2009 | Air

DOW Agrosciences-Chain2D Review

November 17, 2008 | Air

Analysis of Anomalously High Emission Potential Values for Certain Spray Oil Products

September 16, 2008 | Air

Standard Operating Procedure – Instructions for the use of the Global FP101 and FP201 Flow Probe for Estimating Velocity in Wadable Streams

June 20, 2008 | Surface Water

Use of LEACHM Model, LEACHP Version to Predict Volatilization Component of a Pesticide Lost from a Field Application

June 9, 2008 | Air

Standard Operating Procedure – Calculating Pesticide Concentration in Dry and Wet Soil

April 11, 2008 | Groundwater

Calculation of Method Use Fractions for 1,3-Dichloropropene

March 28, 2008 | Air

Preliminary Results for Study 221: Effect of Chemigation Injection Speed on the Efficacy and Leaching of the Pre-Emergence Herbicides and Diuron

March 10, 2008 | Groundwater

Study GW05-Summary or Results for Fiscal Year 2005/06 Ground Water Protection List Monitoring for S-Ethyl Dipropylthiocarbamate

January 17, 2008 | Groundwater

Study GW06-Summary of Results for Fiscal Year 2005-2006 Ground Water Protection List Monitoring for Aldicarb

January 17, 2008 | Groundwater

Study GW07-Summary of Results for Fiscal Year 2006/07 Ground Water Protection List Monitoring for Napropamide and Oryzalin

January 11, 2008 | Groundwater

Results for Study 234: The Effectiveness of a Constructed Wetland at Reducing Organophosphate Pesticides in Irrigation Runoff

December 11, 2007 | Surface Water

Study 221-Demonstration Study on Chemigation of Simazine and Diuron on Citrus Orchard in Tulare County

September 12, 2007 | Groundwater

Standard Operating Procedure – Preparing and Approving Study Memoranda and Reports

July 12, 2007 | Groundwater

Standard Operating Procedure – Preparing and Approving Protocols

July 12, 2007 | Groundwater

Simulation of Concentrations and Exposure Associated with Updated Township Caps for Merced County for 1,3-Dichloropropene

April 9, 2007 | Air

Simulation of Concentrations and Exposure Associated with DOW Agrosciences-Proposed Township Caps for Ventura County for 1,3-Dichloropropene

March 27, 2007 | Air

Development of Additional Methyl Isothiocyanate Buffer Zones for the Metam Sodium Mitigation Proposal

February 8, 2007 | Air

Air Dispersion Modeling Analysis of Priority Incident 38-MON-05

January 25, 2007 | Air

Results for Study 235: Constructed Vegetated Ditches as a Management Practice in Irrigated Alfalfa

December 18, 2006 | Surface Water

Director’s Proposed Decision Concerning Sulfuryl Fluoride as a Toxic Air Contaminant

September 18, 2006 | Air

Sulfuryl Fluoride (Vikane®) Risk Characterization Document Executive Summary

September 1, 2006 | Air

Sulfuryl Fluoride (Vikane®) Risk Characterization Document Volume 1 Health Risk Assessment

July 1, 2006 | Air

Sulfuryl Fluoride (Vikane®) Risk Characterization Document Volume II Exposure Assessment

July 1, 2006 | Air

Findings of the Scientific Review Panel on the Proposed Identification of Sulfuryl Fluoride as a Toxic Air Contaminant as Adopted at the Panel’s June 26, 2006 Meeting

June 26, 2006 | Air

Dazomet Flux Analysis and Recommendations for Future Study

April 26, 2006 | Air

Standard Operating Procedure – Procedure for Preparing Background Matrix Water with Sediment

March 1, 2006 | Groundwater

Estimation of Methyl Isothiocyanate Air Concentrations Associated with Priority Case Number 026-KER-05

November 30, 2005 | Air

Background on Copper Antifouling Paint Issues and Evaluation of the Department of Pesticide Regulation’s Options

August 19, 2005 | Surface Water

Findings on the Health Effects of the Active Ingredient: Sulfuryl Fluoride

July 1, 2005 | Air

Report for the Air Monitoring Around a Structural Application of Sulfuryl Fluoride in Loomis, CA Summer-2004

June 9, 2005 | Air

Standard Operating Procedure – Sample Tracking Procedures

April 11, 2005 | Groundwater

Standard Operating Procedure – Preparation of Blind Matrix Spikes

April 11, 2005 | Groundwater

Variability in Daytime Stability Class Designation Under Partly Foggy Conditions in a Monitoring Study

February 18, 2005 | Air

Estimation of Volatile Emission Potential of Pesticides by Thermogravimetry

February 9, 2005 | Air

Demonstration of Effectiveness of Chemigation of Pre-Emergence Herbicides Applied through Low-Volume Irrigation Systems

February 1, 2005 | Groundwater

Before the Director of the Department of Pesticide Regulation State of California

January 11, 2005 | Groundwater

Probabilistic Modeling for Risk Assessment of Ground Water Contamination by Pesticides.

December 1, 2004 | Groundwater

Methyl Parathion Risk Characterization Document Dietary and Ambient Air Exposures

October 26, 2004 | Risk

Alternative Management Practices Under the Ground Water Regulations for Band Treatments in Citrus

October 6, 2004 | Groundwater

Preliminary Monitoring Results of Imidacloprid and Cyfluthrin Applications for Glass Winged Sharpshooter Control in a Residential Area of Solano County (Study 197)

September 17, 2004 | Pest Eradication

Develop Holding Pond Mitigation Practices to Prevent Herbicide Movement to the Ground Water.

September 6, 2004 | Groundwater

Summary of Results for Fiscal Year 2003/04 Ground Water Protection List Monitoring for Imidacloprid and Three of Its Degradates

March 25, 2004 | Groundwater

Revised Risk Estimates for Kern Country Methyl Bromide Air Monitoring In 2001

March 11, 2004 | Air

Grower Training Manual for Backflow Prevention in Chemigation of Pesticides

March 3, 2004 | Groundwater

Evaluation of Ambient Air Monitoring Conducted by the Alliance of the Methyl Bromide Industry in Ventura and Monterey/Santa Cruz Counties in 2002

February 19, 2004 | Air

Tracking ID 202841: Review of Methyl Bromide Gas Concentrations in the Tarp Soil Inter-Space: Deep Broadcast Tarped Vs. Shallow Broadcast Tarped Fumigation (Gillis and Smith 2003)

February 10, 2004 | Air

Effect of Air Resources Board Corrections Received In January 2004 on Calculation of Methyl Bromide Township Cap

January 9, 2004 | Air

Proposed Dormant Spray Regulation Language October 17, 2003 Version

October 17, 2003 | Surface Water

Setting Methyl Bromide Target Exposure Levels

September 1, 2003 | Air

Director’s Proposed Decision Concerning Methyl Isothiocyanate as a Toxic Air Contaminant

August 21, 2003 | Air

Evaluation of Ambient Air Monitoring and Township-Month Use Pound Distribution of Methyl Bromide for Subchronic Exposure Assessment

July 24, 2003 | Air

Standard Operating Procedure – Preparation of Air Sampling Tubes, Resin Jars, and Cartridges

July 22, 2003 | Air

Calculation of a Tolerance Interval for a Township Limit on Methyl Bromide Use to Control Subchronic Exposure

July 11, 2003 | Air

Standard Operating Procedure – Personnel Organization and Responsibilities for Studies

June 25, 2003 | Groundwater

Standard Operating Procedure – Conducting a Trapping Efficiency Study for Air Monitoring using Standard in Solvent

June 16, 2003 | Air

Risk of Methyl Bromide Exposure in Ventura and Monterey/Santa Cruz Counties Based on Alliance of the Methyl Bromide Industry Monitoring in 2002 and Update of Risks for 8-week Exposure from 2001 and 2000 Data

June 11, 2003 | Air

Mitigation Measures for Seasonal Exposures of Agricultural Workers to Methyl Bromide During Soil Fumigations

May 22, 2003 | Air

Response to Comments from Methyl Bromide Subchronic Regulatory Level Workshop on February 26, 2003

May 1, 2003 | Air

Appendix A – Comments Submitted

May 1, 2003 | Air

Alliance of the Methyl Bromide Industry Methyl Bromide Air Monitoring: Ventura, Santa Cruz, and Monterey Counties July-October, 2002

April 15, 2003 | Air

US Clean Water Act Section 303(d) Final List for Registered Pesticides 2002

March 26, 2003 | Surface Water

Guidance for Diazinon Reevaluation Studies

March 26, 2003 | Surface Water

Summary of Results for Fiscal Year 2002/03 Ground Water Protection List Monitoring for Hexazinone and Three of Its Degradates

March 12, 2003 | Groundwater

Workshop: Risk Management Consideration for Methyl Bromide Subchronic Toxicity

February 26, 2003 | Air

Risk Management Directive

December 2, 2002 | Air

Preliminary Monitoring Results of Imidacloprid and Carbaryl Applications for Glass-Winged Sharpshooter Control in Residential Areas of Imperial County (Study 197)

October 9, 2002 | Pest Eradication

Standard Operating Procedure – Request for Method Development and the Laboratory Specifications Form

September 4, 2002 | Groundwater

Evaluation of Methyl Isothiocyanate as a Toxic Air Contaminant Part C—Human Health Assessment

August 1, 2002 | Air

Preliminary Monitoring Results of Imidacloprid Applications for Glassy-Winged Sharpshooter Control in Residential Areas of Santa Clara County (Study 197)

July 24, 2002 | Pest Eradication

Summary of Results for Fiscal Year 2000/01 Ground Water Protection List Monitoring for Fenamiphos, Fenamiphos Sulfoxide, and Fenamiphos Sulfone

June 30, 2002 | Groundwater

Appendix A Results of Individual Methyl Bromide Air Samples

June 20, 2002 | Air

Summary and Analysis of 2001 Ambient Air Monitoring Data for Methyl Bromide

June 20, 2002 | Air

Preliminary Draft – Do Not Cite or Quote 6/18/02

June 18, 2002 | Air

Summary of Results for Fiscal Year 2000/01 Ground Water Protection List Monitoring for Alachlor, Metolachlor, and Two Degradates of Each

May 6, 2002 | Groundwater

Revised Findings on the Health Effects of Methyl Isothiocyanate

January 31, 2002 | Air

Protocol for the Ambient Air Monitoring for Methyl Bromide, 1,3-Dichloropropene, Chloropicrin and Breakdown Products of Metam Sodium In Kern, Monterey and Santa Cruz Counties During Summer/Fall, 2001

June 26, 2001 | Air

Methyl Bromide Risk Management Plan for Seasonal Community Exposures

June 26, 2001 | Air

Preliminary Monitoring Results of Imidacloprid Applications for Glass-Winged Sharpshooter Control in Residential Areas of Sacramento County (Study 197)

May 1, 2001 | Pest Eradication

Appendix A Summary of Ambient Air Monitoring for Methyl Bromide

March 30, 2001 | Air

Appendix B Evaluation of Ambient Air Concentration of Methyl Bromide In Monterey, Santa Cruz, and Kern County

February 15, 2001 | Air

Peak-To-Mean Air Concentration Estimation for Fumigants

November 6, 2000 | Air

Determination of Carbaryl and Imidacloprid on Dislodgeable Leaf Punch Samples

September 7, 2000 | Pest Eradication

Effect of Irrigation Scheduling on Movement of Pesticides to Ground Water in Coarse Soils.

January 1, 2000 | Groundwater

Methyl Bromide Emission Ratio Groupings

December 2, 1999 | Air

Standard Operating Procedure – EHAP Warehouse Facility Sample Storage Temperatures, Storage Maintenance and Security

October 12, 1999 | Groundwater

Standard Operating Procedure – Transporting, Packaging and Shipping Samples from the Field to the Warehouse or Laboratory

September 2, 1999 | Groundwater

Evaluation of Charcoal Tube and SUMMA Canister Recoveries for Methyl Bromide Air Sampling

June 1, 1999 | Air

Director’s Response Concerning Norflurazon Pursuant to Assembly Bill 2021

April 7, 1999 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Summary of Results for FY 1998-99 Ground Water Protection List Monitoring

March 19, 1999 | Groundwater

Findings on Norflurazon by the Ground Water Subcommittee of the Pesticide Registration and Evaluation Committee

March 11, 1999 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Standard Operating Procedure – Sampling for Surface Water Runoff in Agricultural Fields

January 9, 1999 | Surface Water

Protocol for Monitoring the Concentration of Detected Pesticides in Wells Located in Highly Sensitive Areas

January 1, 1999 | Groundwater

Standard Operating Procedure – Equal-Width-Increment Sampling of Surface Waters

December 22, 1998 | Surface Water

Standard Operating Procedure – Instructions for Preserving Water Samples Using Hydrochloric Acid (HCL)

October 1, 1998 | Surface Water

Standard Operating Procedure – Instructions for Rinsing Surface Water Sampling Containers

September 30, 1998 | Surface Water

Summary of Results for Fiscal Year 1997-98 Ground Water Protection List Monitoring

June 30, 1998 | Groundwater

Standard Operating Procedure – Procedure for Generating Rinse Blanks

June 23, 1998 | Groundwater

Standard Operating Procedure – Intructions for Splitting Water and Rinsing the Geotech® Dekaport Splitter and Splitting Equipment

June 18, 1998 | Surface Water

Notice of Norflurazon Residue Finds in California Ground Water and Registrant Opportunity to Request a Hearing

May 28, 1998 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Standard Operating Procedure – Conducting Surface Water Monitoring for Pesticides

December 22, 1997 | Surface Water

Summary of Results for FY 1996-97 Ground Water Protection List Monitoring

June 30, 1997 | Groundwater

Standard Operating Procedure – Archiving Study Data, Records, and Other Documents

February 24, 1997 | Groundwater

Management Agency Agreement Between the State Water Resources Control Board and the Department of Pesticide Regulation

February 1, 1997 | Surface Water

Summary of Results for FY 1995-96 Ground Water Protection List Monitoring

August 21, 1996 | Groundwater

Protocol to Determine Whether a Pesticide May Have Been Used in a Section Where it Has Been Detected In Ground Water (Establish Legal Agricultural Use)

March 12, 1996 | Groundwater

Summary of Federal and California Legal Mandates Dealing with Pesticides in Surface Waters

August 31, 1995 | Surface Water

Standard Operating Procedure – Reviewing Contract Laboratory Methods

August 10, 1995 | Groundwater

Summary of Results for FY 1994-95 Ground Water Protection List Monitoring

June 30, 1995 | Groundwater

Standard Operating Procedure – Preparing, Approving and Implementing Standard Operating Procedures

June 29, 1995 | Groundwater

Determining Sources and Ages of Shallow Ground Waters, with Potential Application to Studies of Pesticide Transport to California Ground Water.

April 21, 1995 | Groundwater

Summary of Results for FY 1993-94 Ground Water Protection List Monitoring

August 19, 1994 | Groundwater

Options to Methyl Bromide for the Control of Soil-Borne Diseases and Pests in California with Reference to the Netherlands

July 1, 1994 | Air

Guide to Sampling Air, Water, Soil, and Vegetation for Chemical Analysis

June 1, 1994 | Groundwater

Summary of Results for FY 1992-93 Ground Water Protection List Monitoring

August 23, 1993 | Groundwater

Summary Of Results For FY 1991-92 Ground Water Protection List Monitoring

July 15, 1992 | Groundwater

Chlorpyrifos (Dursban®, Lorsban®) Dietary Exposure Assessment

May 8, 1992 | Risk

Monitoring of Methyl Eugenol and DDVP in Fruit Near Fruit Fly Traps During a Pest Trapping Program

November 1, 1990 | Pest Eradication

Bentazon

May 22, 1990 | Pesticide Contamination Prevention Act (PCPA) Groundwater

The Environmental Monitoring of Methyl Eugenol, Naled and Dichlorvos During a Pest Trapping and Eradication Program

October 1, 1989 | Pest Eradication

Generic Guidelines for Development of a Respiratory Protection Program in Accordance with Department of Pesticide Regulation Requirements

August 3, 1989 | Risk

Notice of Aldicarb Sulfoxide and Aldicarb Sulfone Finds in California Ground Water and Registrants’ Opportunity to Request Hearing

October 11, 1988 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Director’s Response Concerning Prometon Pursuant to AB 2021

February 19, 1988 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Director’s AB 2021 Response Concerning Simazine

August 21, 1987 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Legal Agricultural Use Criteria

July 31, 1987 | Groundwater

Simazine

July 24, 1987 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Appendix B Technical Appendix to supplement Section 7: Application of Emission Ratios, Gaussian Plume Functions, and Meteorological Data in the Analysis of Use Concentration Relationships of 1,3-Dichloropropene

May 16, 2025 | Air

Pesticide Contamination Prevention Act Proposed Hearing Procedures for Certain Products Containing the Active Ingredient: Imidacloprid

May 16, 2025 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Pesticide Contamination Prevention Act Review Process Suggested Information for Registrant Report and Documented Evidence for Hearing

May 16, 2025 | Pesticide Contamination Prevention Act (PCPA) Groundwater

RE: Imidacloprid Groundwater Detection – CA Pesticide Contamination Prevention Act (PCPA)

May 16, 2025 | Pesticide Contamination Prevention Act (PCPA) Groundwater

RE: Imidacloprid Groundwater Detection – CA Pesticide Contamination Prevention Act (PCPA)

May 16, 2025 | Pesticide Contamination Prevention Act (PCPA) Groundwater

RE: Imidacloprid Groundwater Detection – CA Pesticide Contamination Prevention Act (PCPA)

May 16, 2025 | Pesticide Contamination Prevention Act (PCPA) Groundwater

Use Restrictions (Management Practices) for Leaching GWPAs, Except Inside Canal and Ditch Banks and Artificial Recharge Basins, and on Engineered Rights of Way

May 16, 2025 | Groundwater

Use Requirements (Management Practices) for Engineered Rights of Way within GWPAs

May 16, 2025 | Groundwater

Use Requirements (Management Practices) for Runoff GWPAs, except Inside Canal and Ditch Banks and Artificial Recharge Basins, and on Engineered Rights of Way

May 16, 2025 | Groundwater

Well Inventory Database Excluded Data

May 16, 2025 | Groundwater

Letter Codes Used in the Online Well Inventory Database Tables

May 16, 2025 | Groundwater

Status Codes

May 16, 2025 | Groundwater

Protect Your Drinking Water

May 16, 2025 | Groundwater

Appendix B Methyl Bromide Exposure and Risk Evaluations

May 16, 2025 | Air

Analysis of Methyl Bromide Ambient Air Concentration Data Monitored by the Air Resources Board and the Alliance of Methyl Bromide Industry in Year 2001

May 16, 2025 | Air

California Department of Pesticide Regulation Reevaluation Process

May 16, 2025 | Air

Determination of 62 Pesticides in Groundwater by Liquid Chromatography Tandem Mass Spectrometry and Gas Chromatography Tandem Mass Spectrometry

May 16, 2025 | Groundwater

Determination of Atrazine, Bromacil, Diuron, Hexazinone, Metribuzin, Norflurazon, Prometon, Prometryn, Simazine, Desethylatrazine, Norflurazon Desmethyl, Desisopropylatrazine, Diaminochlorotriazine, Tebuthiuron and Clothianidin in Groundwater by Liquid Chromatography Triple Quadrupole Mass Spectrometry

May 16, 2025 | Groundwater

Determination of Bentazon in Ground Water Using Gas Chromatography/MSD

May 16, 2025 | Groundwater

Analysis of S- Metolachlor, Metolachlor ESA, and Metolachlor OXA in Well Water

May 16, 2025 | Groundwater

Determination of Pyrethroids in Sediment Water Using Triple Quadrupole GC/MS/MS

May 16, 2025 | Surface Water

Analysis of Imidacloprid, S-Metolachlor, Metolachlor ESA, and Metolachlor OXA in Soil

May 16, 2025 | Groundwater

Analysis of Sulfentrazone and Sulfentrazone-3-Carboxylic Acid in Well Water

May 16, 2025 | Groundwater

Analysis of Sulfentrazone and Sulfentrazone-3-Carboxylic Acid in Soil and Turf

May 16, 2025 | Groundwater

Determination of Linuron, Isoxaben, Mefenoxam, Metalaxyl, Methomyl and Propyzamide in Well Water by Ultra Performance Liquid Chromatography Coupled to Tandem Mass Spectrometry

May 16, 2025 | Groundwater

Determination of MITC in Air by GC-MS

May 16, 2025 | Air

Determination of 53 Pesticides in Groundwater by Liquid Chromatography Tandem Mass Spectrometry (LC/MS/MS) and Gas Chromatography Tandem Mass Spectrometry (GC/MS/MS)

May 16, 2025 | Groundwater

Analysis of S-Metolachlor, Metolachlor ESA, and Metolachlor OXA in Well Water

May 16, 2025 | Groundwater

Determination of Atrazine, Bromacil, Diuron, Hexazinone, Metribuzin, Norflurazon, Prometon, Prometryn, Simazine, Deethyl Atrazine (DEA), Deisopropyl Atrazine (ACET), Diamino Chlorotraizine (DACT), Desmethyl Norflurazone,Tebuthiuron and the Metabolites Tebuthiuron-104, Tebuthiuron-106, Tebuthiuron-107 and Tebuthiuron-108 in Well Water by MCX Extraction and Liquid Chromatography – Triple Quadrupole Mass Spectrometry

May 16, 2025 | Groundwater

Developing Mitigation Measures for 1,3-Dichloropropene Applications: An Overview of the Pilot Studies

May 16, 2025 | Air

Workbook for Gaussian Modeling Analysis of Air Concentration Measurements

May 16, 2025 | Air

Part 1: ISCST3 Data Preparation from CIMIS Weather Station Data

May 16, 2025 | Air

Text of Final Regulations

May 16, 2025 | Surface Water

Develop Holding Pond Mitigation Practices to Prevent Herbicide Movement to the Ground Water. Final Report to DPR. Prichard, D., L. Schwankl, and M. Canevari. EH 04-03. 2004.

May 16, 2025 | Groundwater

Effects of Agronomic and Geologic Factors on Pesticide Movement in Soil: Comparison of Two Ground Water Basins in California. Welling, R., J. Troiano, R. Maykoski and G. Loughner. In Proceedings of the Agricultural Impact on Ground Water – National Water Well Association. pp 666-685. 1986.

May 16, 2025 | Groundwater

Soil Distribution of Simazine, Diazinon and Bromide in Sandy Soil After Exposure to 1985-86 Winter Rain in Fresno County. Troiano, J. and C. Garretson. EH 88-02. 1988.

May 16, 2025 | Groundwater

Atrazine and its Relation to Percolation of Water as Influenced by Three Rates and Four Methods of Irrigation Water Application. Troiano, J., C. Garretson, C. Krauter, and J. Brownell. EH 90-07. 1990.

May 16, 2025 | Groundwater

Seasonal Rainfall Effects on Pesticide Leaching in Riverside, California. Neal, R., R. Teso, T. Younglove, and D.L. Sheeks III. EH 91-07. 1991

May 16, 2025 | Groundwater

Presence of Bromacil, Diuron, and Simazine in Surface Water Runoff from Agricultural Fields and Non-Crop Sites in Tulare County, California. Braun, A.L. and L.S. Hawkins. PM 91-1. 1991

May 16, 2025 | Groundwater

An Economic and Pest Management Evaluation of the Insecticide Imidacloprid in California Agriculture

May 16, 2025 | Pesticide Contamination Prevention Act (PCPA) Groundwater

On-line Access to Data from DPR’s Surface Water Database

May 16, 2025 | Surface Water

A Leach Rate Cap on Copper Antifouling Paints in California: A Regulatory Case Study

May 16, 2025 | Surface Water

Prioritizing Pesticides for Surface Water Monitoring in Agricultural and Urban Areas of California

May 16, 2025 | Surface Water

Loading of Pesticides to Wastewater Catchments from Flea and Tick Topical Products

May 16, 2025 | Surface Water

Transcript for Video of Pesticide-Treated Seed Workshop, November 15, 2021

May 16, 2025 | Surface Water

Assistant Executive Officers of California’s Regional Water Quality Control Boards and Managers of California’s Department of Pesticide Regulation

May 16, 2025 | Surface Water

Surface Water Database (SURF) Highlights of the 2023 SURF Update

May 16, 2025 | Surface Water

Surface Water Database (SURF) Highlights DPR’s 2023 SURF Data

May 16, 2025 | Surface Water

Imidacloprid Use and Contamination in Surface Waters in the Salinas, Santa Maria, and Imperial Valleys, California

May 16, 2025 | Surface Water

Using the Soil and Water Assessment Tool (SWAT) to Assess Pesticide Runoff from the Salinas River Watershed, California

May 16, 2025 | Surface Water

Sampling for Pesticide Residues in California Well Water Highlights of the 2021 Annual Well Sampling Report

May 16, 2025 | Groundwater

2017 Status Report Pesticide Contamination Prevention Act

May 16, 2025 | Groundwater

2018 Status Report Pesticide Contamination Prevention Act

May 16, 2025 | Groundwater

2019 Status Report Pesticide Contamination Prevention Act

May 16, 2025 | Groundwater

2020 Status Report Pesticide Contamination Prevention Act

May 16, 2025 | Groundwater

2021/2022 Status Report Pesticide Contamination Prevention Act

May 16, 2025 | Groundwater

Sampling for Pesticide Residues in California Well Water DPR Response to Detections in the 2021 Well Sampling Report

May 16, 2025 | Groundwater

Detection of Atrazine, Simazine, and Their Breakdown Products in Public Water Supply Wells

May 16, 2025 | Groundwater

Study 228: Monitoring the Concentrations of Detected Pesticides in Wells Located in Highly Sensitive Areas (Well Network Sampling) Annual Update 2020

May 16, 2025 | Groundwater

Study 319 Report: Monitoring of Dissolved Copper in California Coastal Waterbodies

May 16, 2025 | Surface Water

GW10B: Ground Water Protection List Monitoring for Oryzalin

May 16, 2025 | Groundwater

Study GW17: Protocol for Ground Water Protection List Monitoring for Imidacloprid

May 16, 2025 | Groundwater

Instructions for the Calibration and Use of the PCSTestr35 pH Meter for Groundwater Sampling

May 16, 2025 | Groundwater

Calculation of Pesticide Half-Life from a Terrestrial Field Dissipation Study

May 16, 2025 | Groundwater

Calibration and Use of the PCTSTestr 50 pH Meter for Groundwater Sampling

May 16, 2025 | Groundwater

Instructions for the Calibration and Use of the HI98195 Multiparameter Meter for Groundwater Sampling

May 16, 2025 | Groundwater

Appendix – 1 Multiparameter Meter Calibration Logs

May 16, 2025 | Groundwater

Water Level Measurement in a Well

May 16, 2025 | Groundwater

HANNA Instruments HI93703-11 Portable Logging Turbidity Meter with RS232

May 16, 2025 | Groundwater

Appendices 1 & 2 Turbidity Meter Log Summary and Examples

May 16, 2025 | Groundwater

Soil Sampling, Including Auger and Surface Soil Procedures

May 16, 2025 | Groundwater

Obtaining and Preserving Well Water Samples

May 16, 2025 | Groundwater

Planning, Conducting and Documenting Small-Scale Ground Water Monitoring Studies

May 16, 2025 | Groundwater

Preparation of Sample Containers for Ground Water Monitoring

May 16, 2025 | Groundwater

Procedure for Collecting Background Water

May 16, 2025 | Groundwater

Table 2. Determining the Application Factor (AF). See 1,3-Dichloropropene Field Fumigations, Est. January 1, 2024 Document for Descriptions and Requirements of the Field Fumigation Methods.

May 16, 2025 | Air

Regulations Around the Use of 1,3-Dichloropropene

May 16, 2025 | Air

Text of Final Regulations

May 16, 2025 | Air

Phyto-Mitigation to Remove Neonicotinoids in Surface Water Runoff

May 16, 2025 | Surface Water

Surface Water Database (SURF) Highlights of the 2024 SURF Update

May 16, 2025 | Surface Water

Instructions for Calibration and Use of a Xonteck Model 901 Canister Sampler

May 16, 2025 | Air

Protege Tu Agua Potable

May 16, 2025 | Groundwater

Instructions for Use of ALICAT Flow Meter (MB Series)

May 16, 2025 | Air

Preventing Pesticide Illness

May 16, 2025 | Pesticide Illness Surveillance Program (PISP)

Using Water Quality Ponds to Mitigate Pesticides in Urban Runoff

May 16, 2025 | Surface Water

Standard Operating Procedure – Instructions for Use of SKC AirChek Connect Sample Pump

May 16, 2025 | Air

Standard Operating Procedure – Instructions for Calibration and Use of a Met One 3-Channel Pesticide Sampler

May 16, 2025 | Air

Standard Operating Procedure – Instructions for Use of ALICAT Flow Meter (MB Series)

May 16, 2025 | Air

Standard Operating Procedure – Flite4 High Volume Air Sampling Pump

May 16, 2025 | Air

Standard Operating Procedure – Calibration, Field Measurement, Cleaning, and Storage of the YSI EXO1 Multiparameter Sonde

May 16, 2025 | Surface Water

Standard Operating Procedure – FH950 Portable Velocity Meter

May 16, 2025 | Surface Water

Aqua Troll 400 Multi-Parameter Water Quality Probe

May 16, 2025 | Surface Water

Standard Operating Procedure – Procedures for Collecting Water and Sediment Samples for Pesticide Analysis

May 16, 2025 | Surface Water

Standard Operating Procedure – Guide for Analytical Method Development

May 16, 2025 | Surface Water

Standard Operating Procedure – Instructions for Calibration and Use of a Mechanical Regulator with a Summa Canister

May 16, 2025 | Air

Standard Operating Procedure – Assembly of a Mechanical Regulator for Canister Sampling

May 16, 2025 | Air

SURF Data from DPR studies: Excluding External Data Sources

May 16, 2025 | Surface Water

Standard Operating Procedure – Instructions for Use of Nutech 2703 Auto Air Sampling Device

May 16, 2025 | Air

Oncogenic Potency and Risk to Workers and the General Public from Inhaled 1,3-Dichloropropene

May 16, 2025 | Risk

2024 New Active Ingredients List

May 16, 2025 | Risk

Commodity Codes for Permit/PUR Programs

May 16, 2025 | Pesticide Use Report (PUR)

Pesticide Use Reporting (PUR) Forms

May 16, 2025 | Pesticide Use Report (PUR)

Pesticides and Prop 65

May 16, 2025 | Risk

Pesticides on the Proposition 65 List

May 16, 2025 | Residue

Neonicotinoid Fact Sheets

May 16, 2025 | Residue

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