2

INTRODUCTION 

This is the Environmental Protection Agency’s (EPA or the Agency) Final Work Plan (FWP) for 

the registration review of kaolin. This work plan addresses public comments received concerning 

the Preliminary Work Plan (PWP), which was posted in the kaolin registration review docket 

(EPA-HQ-OPP-2014-0107). Kaolin is currently registered in one manufacturing use product and 

five end products for use as an insecticide (broad spectrum), fungicide (against powdery mildew) 

and plant growth regulator (for protection from heat stress and sun damage). 

The Agency is implementing the registration review program pursuant to Section 3(g) of the 

Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA), and will review each registered 

pesticide every 15 years to determine whether it continues to meet the FIFRA standard for 

registration. Changes in science, public policy, and pesticide use practices occur over time. The 

registration review program is intended to make sure that, as the ability to assess risk evolves and 

as policies and practices change, all registered pesticides continue to meet the statutory standard. 

The public phase of registration review begins when the initial docket is opened for each case. 

Information on this program is provided on the Agency’s website.1

The FWP begins with any updates since the PWP was issued. Next is a summary of substantive 

comments received during the public comment period for the PWP concerning anticipated data 

needs, expected risk assessments, or the estimated timeline identified in the PWP, and a 

summary of the Agency’s responses to those comments. This section is followed by registration 

review planned data needs, risk assessments expected to be conducted, and the projected 

registration review timeline for kaolin. Lastly, there is a discussion of next steps. 

UPDATES SINCE THE PWP WAS ISSUED 

There are no additional updates on kaolin since the issuance of the PWP. 

SUMMARY OF COMMENTS AND AGENCY RESPONSES 

During the 60-day public comment period on the kaolin PWP, which opened on March 28, 2014, 

and closed on May 27, 2014, the Agency did not receive any comments concerning this case. 

PLANNED DATA NEEDS

The planned data needs have not changed from what was included in the kaolin PWP. 

RISK ASSESSMENTS FOR REGISTRATION REVIEW

As stated in the PWP, no data gaps (anticipated data needs) for kaolin have been identified. The 

most recent comprehensive risk assessment for kaolin was completed October 31, 1997, in 

support of the first biochemical registration of kaolin, which occurred on March 17, 1998. 

Because there are no data gaps and no additional information has been received by the Agency 

 

1

http://www.epa.gov/oppsrrd1/registration_review/ 
3

for this biochemical pesticide since it was first registered, the Agency does not anticipate the 

need to conduct a new risk assessment during registration review. 

TIMELINE

EPA has created the following estimated timeline for the completion of the kaolin registration 

review in Table 1, below. This projected timeline has not changed since the PWP. 

Table 1: Registration Review for Kaolin – Projected Registration Review Timeline 

Activities Estimated Month/Year 

 Opening the Docket 

 Open Docket and 60-Day Public Comment Period March 2014 

 Close Public Comment Period May 2014 

 Case Development 

 Issue Final Work Plan September 2014 

 Issue Data Call-in N/A 

 Data Submission N/A 

 Open 30-Day Public Comment Period for Draft Risk Assessments N/A 

 Close Public Comment Period N/A 

 Registration Review Decision 

 Open 60-Day Public Comment Period for Proposed Registration Review 

 Decision 

June 2015 

 Close Public Comment Period August 2015 

 Final Decision December 2015 

Estimated Total (years) 1 year and 9 months 

NEXT STEPS 

The Agency plans to issue a Proposed Registration Review Decision for this case in June, 2015. 

At that time, a 60-day public comment period will be opened to accept comments on the 

Proposed Decision.