Document rpg7nEgawo1dpw86JkGoB058q

#1 From: To: Subj: 21-APR-1987 15s55:02 JLCL01::JLCL01::MRGATE::"A1::WARDRB" MRGATE:: HSKVAX::FALLON" Update on MR 7971 From: NAME: Richard B. Ward ------------------------------------- FUNC: C&P Jackson Lab. CD) TEL: 540-2033 <WARDRB AT A1 AT JLUXG2> To: NAME: Daniel J. Urencur CVRENCUDJ AT A1 AT JLL>X02> NAME: Douglas E. Cregar <CREGARDE AT A1 AT JLMX02>, FALLON SHSKVAX MRGATE, NAME: Ernst G. Leser <LESEREG AT A1 AT JLMX02> Bob Fallon has done some preliminary work with two samples of well water from CW -- the data are (Pb concentrations in ppm); Well 0W-TEL-3D 0W-TEL-2D Press RETURN for more... MAI L> NEWMAIL DUP040004403, #1 21-APR-1987 15:55:02 At that point we will need to readdress the project on at least two questions: (a) a policy question, do we want to spend the project and analytical costs on a study which could only give a bioremediation indicator at less than hazardous waste levels? and (b) a technical question, are our planned analytical procedures adequate to measure results at the lower range? Richard. MAIL> NEWMAIL, DUP040004404 *' *1 21-APR-1987 15s55i02 Pb level "hi->iignhi " To tal Pb 2.2 Sol Pb <3 spl pH 2.4 Sol Pb pH9 0.5 Microbiological growth no "low 0,4 0.34 0 . 28 yes This suggests that the original levels planned in MR7971 ("low" , 10-20 ppm, "high" 200-400 ppm) are (i) not available from CW wells and (ii) may be too high for growth anyway, Bob plans to recheck these results and run a few test analyses for Pb. The entire MR as planned has now been estimated to generate about 600 Pb analyses at an added cost of about $12,000 ($20 each). However it looks as though the Pb levels in MR7971 may heed to be substantially reduced to levels which microorganisms will tolerate, that is <<5 ppm -- the current "hazardous waste trigger level". Press RETURN for more,,, MAIL) NEWMAIL DUP040004405