Document XOoJV8p5OgODg6QqzjVqBjmG

N29610 An alyse s of gasoline, oil, TEL and decom position products \1 \ co CO r- O' o o o Required 1 le a d An alyse ' M iu lte An a lys is Muafeer - 5SA-54 58 gas o lin e '. Mg# P b / Lite r - 73*3 gelatin ous Material ' To ta l Lead - 684 PPM The concentrationof lead la these samplecorrespondapproximatelyto that of g&ooiinwhichcontain: 1mi oftetraethyl loadper gallon. The differsee betweenthe two1probablywithinthe limits of analytic*! variationandMof little or no significance. Sign e d : HE 0008764 Re po rted t *>-28-58 / V- y Results Analysis Number Lead Tetraethyl Remaining Organic Lead - 57A-8593 - ^0. 0001^ - 0. 023$ Th e co n ce n tratio n o f te tra e th yl le a d w ith in th is s a m p le o f Gun ite is n e glig ib le fro m the as p e ct of s afe ty, but is pro bably b a re ly s ign ifican t {enough to in dicate that s o m e s m a ll am o u n t h ad be e n ab s o rb e d ) in th e a n a lytic a l s e n s e . Th e o rg a n ic le ad o th e rw is e (pre su m ably de gradatio n pro ducts o f te trae th yl le ad tend als o to s h o w th at th e m a te r i a l (Gun ite ) i s n o t im p e rvio u s to g a s o lin e co n tain in g te tr a e th y l le a d . Th e to ta l le a d co n te nt o f th is m a te ria l is in s ign ifica n t fro m the a s p e c t of h a za rd . "While th is o n e r e s u lt is n o t to be re g a r d e d a s illu s tr a tiv e o f w hat m igh t h appe n under o th er circu m s tan ce s , it is re as s u rin g, and if the u su al precautio n s a re taken in cleaning such tanks, and if the re su lts of air an alys s afte r cleaning a re within s afe lim its , the p re s e n ce o f th is type o f lin in g w ill pro bably not a lte r th e p ro c e d u re s . It w o uld be w is e to r e s e r v e ju d gm e n t on th is po in t to s o m e extent until further experien ce can dem onstrate whether or not these re su lts are characteristic. 0003763 Reported: 1-6-5 8