HEXAZINONE TOLERANCE REASSESSMENT ELIGIBILITY DECISION ACUTE AND CHRONIC DIETARY RISK ASSESSEMENT DATED 05/ 14/ 2002 DuPONT COMMENTS:

General comments  Dietary Risk Assessment 1. An acute endpoint is only given for females 13 50. We assume this group is considered by EPA to be the most sensitive sub population.

2. In several places we note the risk assessment is 'based on the reassessed tolerances for blueberry, pineapple, and sugarcane. ' For blueberries and pineapple 0.3 ppm is utilized, presumably one half of the new proposed tolerance of 0.6ppm. However, for sugarcane 0.6 ppm (tolerance) is utilized. This appears to be an inconsistency. Stated differently, it is not clear to us why 0.3ppm was selected for blueberry and pineapple while 0.6 was selected for sugarcane.

3. Clarity is needed around the definition of LOQ. There are both enforcement methods (sum of LOQs is 0.55 ppm) and data collection methods (sum of LOQs is 0.3 ppm). We recommend that the enforcement LOQs be used consistently throughout the document.

4. We note that a more up to date consumption database exists, CSFII 94 96/ 98. Why was the older database, CSFII 89 92, used?

Editorial Comment  Typo: p2 Third full paragraph, 2nd line from bottom: residue