Document VJ0YOJME8wKG7QwLEwwjo3QJq

Monsanto -<',- william H. Hunt - Medical *" CrfMMCC April 29, 1970 ee Aroclors - 3 Generation Rat Reproduction and Fish Toxicity TO R.E. Kelly, M.E./E.P. Wheeler A visit to Industrial Bio-Test Laboratories, Inc., April 28, 1??0 revealed the following progress to date of this study: __ ~f*****r The first litters of Fj^were OK for 1242. However, the females, for F2B (second time around) failed to become pregnant at the i*"'"' 100 ppm level. The other two levels were OK. Only 1 female ^'J had pups which are now 12 days old. As a matter of fact only 2 or 3 of the 16 females are pregnant and they haven*t delivered as yet. It is planned to remate these females for 1 week to see what will develop. Regarding the fish toxicity studies (catfish and bluegills) the time scheduled will be 2 to 3 weeks behind because doses which were believed to be OK produced 100# kill. At levels of 1 to 10 ppm for both 1242 and 1254, for 50 fish per level, all died. ' For 1260 at levels of 10 and 100 ppm there were a few survivors at 10 but all were dead at 100 ppm. K&- "6 / -n *-py --r- - - - - - Lf A "*&- /e> . )XU<5 4 William H..Hunt, Ph.D. F' F/ r K 1. ft 0 J r3 r. g NPC0111949 F6L 0904145 HARTOLDMONO015580