Document rxqw6m30aR6kb40jJe7n61xOv

c@ PU ) 4ea6- DuPont ? o. Sox rz ;;'Aasrangton Aorta =3rtars0urg, AV 25'02-'21? CC: J. Colbert - 3M April 30, 1997 Ms. Marylee Maendler Technical Service 3M Specialty Chemicals Division Laboratory 3M Center, Building 236-2A-01 St. Paul, MN 55144-1000 Dear Ms. Maendler: C-a3~oe~> (VSJ Attached are the minutes of our April 2 4 ,19 97 meeting on the environmental issues of C-8. Enclosed please find a copy of the report, "Evaluation of the Biodegradability of C-8 Using the Modified Sturm Test (OECD 301 B). This report is given to 3M under the control of our current secrecy agreement. Sincerely, Sr. Tech. Associate RJZ025834 RJZ:ssb EID090316 DUPONT SOIL/WATER APFO REMEDIATION DUPONT/3M A P R I L 24, 1997 * 3M CONFIRMED THAT THEY WILL DO THE ANALYSIS OF THE WATER AND SOIL SAMPLES FO THIS EFFORT. THIS IS DOCUMENTED IN A LETTER TO R.ZIPFEL DATED 4/18/97. * 3M GAVE THE FOLLOWING REQUIREMENTS FOR THE SAMPLES TO BE SHIPPED TO THEM. 1) DO N O T USE A N Y T E F L O N <R) C O N T A I N I N G S A M P L I N G E Q U I P M E N T O R A N Y T E F L O N (R) S AMPLE CONTAINERS. A N Y T E F L O N (R) IN T H I S P R O C EDURE COUL CONTAMINATE THE SAMPLES. 2) DO N O T U S E A N Y W A T E R O R ICE T H A T COULD C O N T A I N C-8 3) S O I L SAMPLES M U S T BE T A K E N IN A W A Y T H A T A N Y C-8 D E C O M P O S I T I O N PRODUCTS ARE NOT LOST DURING SAMPLING. A) USE W I D E M O U T H S A M P L E CONTAINERS B) I M M E D I A T E L Y COOL S A MPLES USING ICE O R D R Y ICE {BE SURE A N Y WATER ICE DOES NOT CONTAIN C-8). C) SAMPLE SIZE 1) W A T E R SAMPLES - 2 GALLONS 2) SOIL SAMPLES - T H E Y W A N T T H E E N T I R E CORING. SO THE CORE SHOULD BE BROKEN UP INTO 3 FOOT LENGTHS, LABELED, AND EACH 3 FOOT LENGTH DOCUMENTED AS TO DEPTH OF THE CORING. * J I M J O H N S O N INDICATED T H A T BASED O N H I S KNOWL E D G E T H E I R IS *VERY L ITTLE CHANi OF SEEING ANY DECOMPOSITION PRODUCTS. * TED TREAT SUGGESTED THAT THE STUDY TEAM CONSIDER TAKING A VERY LARGE EARTH SAMPLE FROM THE SUPERNATE POUNDS AN D ENCLOSE THE SAMPLE TO PREVENT LOSS OF CAND THE DECOMPOSITION PRODUCTS OF C-8. THEN KEEP THIS SAMPLE FOR A PERIOD OF YEARS TAKING ANNUAL SAMPLES TO DETERMINE THE LOSS OF C-8 AND THE GAIN OF THE DECOMPOSITION PRODUCTS. THIS IDEA NEEDS TO BE INCLUDED IN THE CURRENT WORK TO IDENTIFY THE BIO-FATE OF C-8. IF THE SHORT TERM PROGRAMS DON'T MEET THE BUSINESS NEEDS THEN THIS LONGER PROGRAM MAY BE NECESSARY. * ROGER ZIPFEL PRESENTED TO 3M SOME DATA FOUND IN THE OPEN LITERATURE ON THE PROPERTIES OF C7F15H, AND A AEROBIC BIODEGRADATION STUDY OF C-8 CONDUCTED BY DUPONT. THIS LATTER REPORT WILL BE TRANSMITTED TO 3M UNDER OUR CURRENT SECREC AGREEMENT... * M E E T I N G -A T T E N D E E S : 3M - MARYLEE MAENDLER, JERRY COLBERT, ROBERT HOWELL, JIM JOHNSON DUPONT - TED TREAT, ROGER ZIPFEL. EID090317 rNoo 0u>0 C00057