Document da10DkjZ3j35Zp8pE16mYr2jq

Dr. I. 11. Italian -2- Itarch 15, 1976 Since these limitations can lead to significant errors in determining trace levels of TCD'o in environmental samples, we suggest that IiPA carefully review tho validity of tho porchlorinaticn technique. Fesultn that havo been obtained using this technique may not be valid. If any other information is needed, please let us know. Sincerely, J7 Coleman Weber Manager, Product Acceptability roah \ ccj Dr. A. C. Trakowski Environmental Protection Agency bcc: W. C. Hammann * T3fl R. E. Keller - T1D J. P. Mioure - T2F'~^ D. Wood - 132SC K. W. Easley - Washington 1920 R. G, Kaloy - T2F DSW 019817 STLCOPCB4007750 DSW 019818 1oI \ II STLCOPCB4007751