Document 3eYDe772gb7Xp99QY8ox1m2MJ

MINNESOTA MINING AND MANUFACTURING COMPANY e c : A . C . Beyden - 2U7-BW R* C* C o l li n s / J , A* B roun - 2 7 -2 F * E . E d lu n d - 2 -B " ...... H 6 S . P a rk in s o n - 2 0 7 -IN H . J* W essel - 207-]V ST/PAUL, MINNESOTA 'JTEROFFICE CORRESPONDENCE SUBJECT: Waste D is p o s a l W o o d b u rv Dumn S i t e TO: D. H . COCHRAN - STAFF MANUFACTURING FNG. - 2 0 7 -IN FROM: J . T . L IN G - WATER & SANITARY VHG, D EPT* - 2 0 7 -IN T h e w a s te d i s p o s a l p r o b le m a t o u r W o o d b u ry Dump S i t e h a s b e e n f u r t h e r i n v e s tig a te d . The r e s u lts o f t h is in v e s t ig a t io n and th e recom m endations a re b r ie f ly o u tlin e d as fo llo w s fo r you r c o n s id e ra tio n * ( 1 ) T h r e e e a r t h c o r e s a m p le s w e r e d r i l l e d a t t h e W o o d b u ry Dump S i t e l a s t Ja n u a ry to stu d y th e degree o f p e n e tr a tio n o f th e w aste ch e m ica ls a t th e dump s i t e . B o r in g #1 was d r i l l e d th r o u g h a w a s te d is p o s a l p i t w h ic h was o p e ra te d d u r in g t h e w in t e r o f I9 6 0 . B o rin g #2 was d r i l l e d th ro u g h a n o t h e r w a s te damp p i t , ab o u t 4 0 0 1 s o u th o f b o r in g # 1 , w h ic h was o p e ra te d d u r in g th e s o r in g o f l $ 6 l . B e rin g #3 was d r ille d th ro u g h c le a n s o il ab o u t 1 ,6 0 0 f t , n o rth w es t o f b o rin g #1 as a c o n t r o l* The s o i l sam ples c o lle c t e d a t v a rio u s le v e ls w ere a n a ly s e d by o ur C e n tra l R esearch A n a ly tic a l L a b o ra to ry , o f w h ich a copy o f th e re p o rt is a tta c h e d fo r yo u r re fe re n c e * The g ro u n d w a t e r l e v e l i s a b o u t ?*? b e lo w g ro u n d s u r f a c e . L a b o r a to r y d a ta th ro u g h th e use o f gas ch ro m a to g ra p h ic te c h n iq u e w ith a h y d ro g e n fla m e d e t e c t o r in d ic a t e d t h a t a c e to n e was P e n e tr a te d to th e le v e l o f 75* a t b o rin g #1; e th a n o l, h ep tan e , a c e to n e , e tb v l a c e ta te , and m e th y l e th y l k e to n e w ere found i t th e e le v a tio n belo w ground i n b o rin g # 2 * N o th in g was p o s it iv e ly id e n t if ie d in sm sples w h ic h w ere c o lle c t e d in th e c o n tro l b o rin g (b o r in g # 3 )* T h is i n d i c a t e s some o f o u r l i q u i d w a s te c h e m ic a ls h ave re a c h e d 1 $ % b elo w ground w ith in about one y e a r o f o p e ra tio n * (2 ) L a b o ra to ry te s ts o f u sin g B e n to n ite as th e s e a lin g m a te ria l oh th e w a s te dump s i t e w ere c a r r i e d o u t th r o u g h t h e j o i n t e f f o r t o f th e G eolo gy D ep artm en t and th e D epartm ent o f W ater and S a n ita ry E n g i n e e r i n g . S o i l an d w e t w a s te c o l l e c t e d a t t h e dump s i t e w ere u sed i n th e la b o r a t o r y d u rin g th e t e s t * I t was found t h a t a la y e r o f lo c a l s o i l m ixed w ith 10< B e n to n ite by volum e w ou ld g iv e a s a t is f a c t o r y s e a l* T h is r e o o r t w i l l be a v a ila b le f o r y o u r r e r eren ce s h o r t ly , as soon as th e t e s t is c o m p lete* ( 3 ) A f t e r discussion w ith M r* A r t Hoyden and y o u , i t was g e n e r a lly ag reed t h a t th e f i n a l d is p o s a l o f t h i s w e t w aste w ould be 1 n e in e r s t io n . Joseph G o d e r I n c i n e r a t o r s , In c*, o f C h ic a g o , who have r e c e n t ly i n s t a l l e d a w a s te s o lv e n t i n c in e r a t o r f o r th e U p joh n Company o f K alam azo o , 3MA0G335855 Trial Exhibit 34 3M MN00000220 -2 - M ic h ip a n , w ere c o n ta c te d * A p re lim in a r y p ro p o s a l, in c lu d in p c o s t e s tim a te s , w i l l be a v a ila b le w ith in tw o w eeks* A p i l o t in c in e r a t o r w h ic h w as i n s t a l l e d t o b u rn t h e scim i a t t h e M in n e a n o lis - S t . P a d Sewage D is p o s a l P la n t, P ig s Eye Is la n d , d esig n ed b y Goder in c in e r a t o r s , w i l l be p u t in to o p e ra tio n n e x t w eek. e s h a ll have an o p p o rtu n ity to observe th is o p e ra tio n . KECQMKENDATIONS1*3 (1 ) L a b o ra to ry d a ta s u b s ta n tia te s th e fa c t t h a t w aste c h e m ic a ls a re re a c h in g t h e g r o u n d w a t e r l e v e l a t t h e W o o d b u ry Dump S i t e . W h i l e we a r e i n v e s t i g a tin g th e f e a s i b i l i t y o f in c in e r a t io n as th e f in a l m ethod o f Hi son s a l o f w e t w a s te , i t i s recom m ended t h a t a l l f u t u r e w a s te dump n i t s be i in e t! w i t h 10% B e n t o n i t e . T h e c o s t o f t h i s B e n t o n i t e 1 i n i n r i s e s t i m a t e d a t about |1 .7 5 to $ 2 .0 0 p e r squ are y a r d . The W a ter and S a n ita r y E n g in e e rin g D e p a rtm e n t w i l l fu r n is h th e n e c e s s a ry e n g in e e rin g d ra w in g s and o p e ra tio n p ro ce d u re s fo r th e o p e ra tio n o f t i ls w aste p i t . { ? ) I n v ie w o f th e p u b lic it y o f th e ground w a te r p o llu t io n in N e w p o rt, w h ic h w as p u b lic is e d in th e S t . P a u l D is p a tc h l a s t & a r c h , by C o m m e rc ia l C hem ical s , who a r e h a n d lin g o u r w a s te c h e m ic a l w e t s c r a p , i t i s recom m ended t h a t tw o o b s e r v a t io n w e l l s be d r i l l e d a t t h e W o o d b u ry Dump S i t e t o m o n it o r t h e c o n d itio n o f th e n e a rb y ground w a te r . One o f th e s e o b s e rv a tio n w e lls w i l l be lo c a te d a t th e n o rth w e s t c o rn e r o f th e s it e to o b serve th e c o n d itio n o f g ro u n d w a te r f lo w in p to w a r d o u r dump s i t e , and th e o th e r o b s e r v a t io n w e ll i s to be u sed to E xam in e th e g ro u n d w a te r c o n d it io n as i t p a s s e s th r o u g h o u r dump p i t a . T h is d a ta may p r o v id e v e r y v a lu a b le e v id e n c e a t a fu tu r e d a te w henever a d is p u te o f ground w a te r p o llu t io n may o c c u r . The c o s t o f d r i l l i n g th e s e tw o o b s e rv a tio n w e lls i s e s tim a te d a t a b o u t $1,500 t o $ 2 , 0 0 0 . (3 ) A f te r a f in a l s o lu tio n o f d is p o s a l fo r o u t w e t scrap is fo u n d , e ith e r th ro u g h C o m m ercial C h e m ic a ls o r in c in e r a t o r s in s t a lle d by 3M, th e w e t a c id w aste re m a in s to be c o n tin u o u s ly d is p o s e d In to th e ground a t th e W oodbury s i t e . A f t e r d is c u s s io n w i t h N r . Bob C o l li n s o f o u r G e o lo g y D e p a rtm e n t, i t was a g re e d t h a t t h i s a c id w a s te s h o u ld he dumped I n t o p i t s lo c a te d w here th e lim e s to n e fo rm a tio n o c c u rs . B roken lim e s to n e P e b b le s , w h ic h a re p la c e d in th e w a s te p i t , s h o u ld be used to n e u t r a liz e t h is a c id w aste and th e undergrou nd lim e s to n e fo rm a tio n o v e r la y in g th e a c c r iifie r w ould p ro v id e th e f i n a l n e u t r a l i z a t i o n b e fo re t h e w a s te l i o u i d re a c h e s th e ground w a te r . T h is o p e ra tio n is f a i r l y le s s e x p e n s iv e and s im p le . The W a te r and S a n ita r y E n g in e e rin g D e p a rtm e n t w ou ld f u r n is h th e n e c e s s a ry e n g in e e rin g and o p e ra tio n in fo rm a tio n f o r y o u r u s e . I hope t h i s w i l l b rin g you up to d a te on th e o v e r a ll w a s te d is p o s a l p ro b le m a t t h e W o o d b u r y Dump S i t e . We w i l l c o n t i n u e t o w o r k w i t h y o u t o o b t a i n a n e n g i n e e r in g c o s t e s tim a te o f an in c in e r a t o r w h ic h can be used as th e f i n a l d is p o s a l o f o u r c h e m ic a l w a s te s c ra p . I t is o u r o p in io n th e w a s te d is p o s a l p ro b le m has r e a c h e d t h e p o i n t w h e re some im m e d ia te a c t i o n s h o u ld b e t a k e n . I s h a ll be g la d to d is c u s s t h is m a tte r w ith you a t y o u r e a r lie s t c o n v e n ie n c e . / f' ' J T I: p js 3MA00335856 3M MN00000221