U N I T E D S T A T E S E N V I R O N M E N T A L P R O T E C T I O N A G E N C YREQION Vl

1445 ROSS AVENUE, SUITE 1200D A L L A S , T E X A S 7S202

M E M O R A N D U M

S U B J E C T : Request f o r Removal A c t i o n a t t h e A m e r i c a n Creoso t e S i t e , W i n n f i e l d ,W i n n P a r i s h , L o u i s i a n a .C E R C L I S #LAD000239814 C JS I T E I D E N T I F I C A T I O N # 6 3C a t e g o r y o f Removal: T i m e C r i t i c a lA C T I O N M E M O R A N D U MFROM: J a m e s C. S t a v e s °On-Scene C o o r d i n a t o rR e s p o n s e / I n v e s t i g a t i o n S e c t i o n ( 6 E - E I )TO: Robert E. Layton J r . , P.E.R e g i o n a l A d m i n i s t r a t o r ( 6 A )T H R U : R u s s e l l F . RhoadesD i r e c t o rE n v i r o n m e n t a l S e r v i c e s D i v i s i o n ( 6 E )

I . P U R P O S ET h i s memorandum request s a p p r o v a l f o r a Removal A c t i o n p u r s u a n t t o t h eC o m p r e h e n s i v e E n v i r o n m e n t a l R e s p o n s e , C o m p e n s a t i o n , a n d L i a b i l i t y A c t( C E R C L A ) a n d t h e S u p e r f u n d A m e n d m e n t s a n d R e a u t h o r i z a t i o n A c t ( S A R A ) a tt h e A m e r i c a n C r e o s o t e S i t e . T h e p r o p o s e d a c t i on i n v o l v e s : 1 ) treatmentand d i s c h a r g e o f c o n t a m i n a t e d ra inwater f r o m creosote s t orage tanksand a l a g o o n , 2) i n c i n e r a t i o n o f creosote o i l s , 3) removal and o n s i t ee n c a p s u l a t i o n o f c o n t a m i n a t e d s o i l s and s l u d g e s f r o m s t orage t a n k s andpr e s sur e t r e a t i n g v e s s e l s a n d 4 ) f i l l i n g a n d d i v e r s i o n o f s i t e d r a i n a g ed i t c h e s .T h i s ac t ion meets t h e C r i t e r i a f o r i n i t i a t i n g a removal a c t i on underS e c t i o n 300.65 o f t h e n a t i o n a l C o n t i n g e n c y P l a n ( N C P ) a n d i s a n t i c i p a t e dto require l e s s than t w e l v e month s and $2 m i l l i o n f or c o m p l e t i o n .

I I . B A C K G R O U N DT h e A m e r i c a n Creo s o t e f a c i l i t y used p r e s s u r e treatment w i t h creosote a n dp e n t a c h l o r o p h e n o l i n t h e m a n u f a c t u r e o f t e l e p h o n e p o l e s , r a i l r o a d c r o s s t i e s ,a n d t r e a t e d lumber . T h e s i t e op era t ed f r o m t h e ear ly 1 9 0 0 ' s t o 1985 underseveral d i f f e r e n t owners. T h e f a c i l i t y w a s p u r c h a s e d b y Dicker s on T r e a t i n gC o m p a n y in December 1977, and was shut down and s o l d to S t a l l w o r t h T i m b e r

139815

"

C o m p a n y i n J u l y 1979. S t a l l w o r t h T i m b e r C o . r e f u r b i s h e d t h e p l a n t a n dopera t ed the f a c i l i t y u n t i l 1985, when i t was a b a n d o n e d . Poor wasted i s p o s a l p r a c t i c e s r e s u l t e d i n e x t en s iv e c o n t a m i n a t i o n o f t h e s u r r o u n d i n gs o i l s , s h a l l o w groundwat er , and s u r f a c e water d r a i n a g e courses.A . S i t e D e s c r i p t i o n :

The A m e r i c a n Creosote s i t e is l o ca t ed on 34.21 acres, at 1006 FrontS t r e e t , W i n n f i e l d , L A ( f i g u r e 1 ) . T h e s i t e i s bordered b y Creo s o t eBranch on the nor th , F r o n t S t r e e t on the w e s t , and a r e s i d e n t i a l accessroad on the south and east ( f i g u r e 2). W h e n the f a c i l i i t y was abandonedin J u n e , 1985, S t a l l w o r t h T i m b e r C o m p a n y removed th e manway covers f r o mtwo of the s torage tanks and a l l o w e d them to d r a i n . No e f f o r t was madeto d r a i n the r e m a i n i n g 13 s t orage t a n k s , d i s p o s e o f waste f r o m the s l u d g el a g o o n , or secure the various b u i l d i n g s on s i te . S t r u c t u r e s l e f t ons i t e i n c l u d e f i f t e e n l a r g e s torage t a n k s , three l a r g e b o i l e r s a n d f i v el a r g e pre s sure t r e a t i n g u n i t s ( c o o k e r s ) , three o f f i c e maintenance s h ed s ,a tool and dye s h o p , and a g a s o l i n e p u m p w i t h u n d e r g r o u n d s t o rage tank.A s m a l l chemical l a b o r a t o r y is l o c a t e d west of the p l a n t area near F r o n tS t r e e t and the s i t e access road. The l a b o r a t o r y had c o n t a i n e d brokenc on ta iner s and s p i l l e d c h e m i c a l s , bu t i t was c l e a n e d up by S t a l l w o r t hT i m b e r C o m p a n y d u r i n g t h e p r e v i o u s f e n c i n g ac t ion.Many of the s torage tanks contain l i q u i d s or s l u d g e s , and all l a c k anyt y p e of s e condary c on ta inment system. Some of th e s e s t ru c tur e s arel e a k i n g , which has created s t a n d i n g p o o l s of o i l y material at variousl o c a t i o n s around th e p r o c e s s area. The l a r g e s t p o o l , wh i ch covers about500 sq. f t . , i s near the nor th end of the f a c i l i t y . The cookers ares e t w i t h i n s h a l l o w concrete c o n t a i n m e n t s that are f u l l o f water andcreosote a n d p e n t a c h l o r o p h e n o l waste. T h e c o n t a i n m e n t s o v e r f l o w w i t heach r a i n f a l l event.An earthen d i k e , constructed by ERA d u r i n g a pr ev i ou s removal actione n c i r c l e s t h e wood t r e a t i n g f a c i l i t y . T h e d i k e d area d r a i n s t h r o u g h as t a n d p i p e , i n t o a mixed b e d f i l t r a t i o n sys tem t h a t t e m p o r a r i l y preven t smost o f t h e o i l y m a t e r i a l s f r o m b e i n g washed o f f s i t e b y s u r f a c e r u n o f f .A s l u d g e p i t , a l a g o o n that has been b a c k f i l l e d w i t h w o o d c h i p s , and apond are l o c a t e d on the n o r t h e a s t e r n p o r t i o n of the s i t e . P l a n t o p e r a t i n grecords and h i s t o r i c a l aerial p h o t o s i n d i c a t e that a d d i t i o n a l l a g o o n swere pre sent d u r i n g the 1950s in an area east of the p l a n t , near a naturald r a i n a g e course. Ex t en s iv e soil d i s t u r b a n c e in that area s u g g e s t s thattho s e l a g o o n s were b a c k f i l l e d . A swampy area c o v e r i n g a p p r o x i m a t e l y 5acres e x t e n d s eastward f r o m th e s u s p e c t e d b a c k f i l l e d l a g o o n area a l o n g as m a l l d r a i n a g e course that f l o w s i n t o C r e o s o t e Branch. T h e s u r f a c e o ft h i s area i s covered w i t h a l a y e r of tar l i k e mat er ia l that ranges f r o ma few inches to about one f o o t in t h i c k n e s s .

R u n o f f f r o m the s i t e f l o w s t h r o u g h Creo s o t e Branch about two m i l e s t othe c o n f l u e n c e w i t h Port de Luce C r e e k , and t r a v e l s another m i l e down-s tream to the Dugdemona River. Two d r a i n a g e d i t c h e s o r i g i n a t e on thes i t e near the p l a n t area, and a t h i r d traverse s the s i t e f r o m s ou th tonorth. Creo so t e , p e n t a c h l o r o p h e n o l , and other organic compounds enterthe s e d i t c h e s t h r o u g h s u r f a c e d r a i n a g e f r o m the p l a n t area and subter-ranean m i g r a t i o n whi ch f o l l o w s t h e s h a l l o w water t a b l e . S e e p s o f b l a c k ,tar l i k e mat er ia l can be observed in the banks of the d r a i n a g e d i t c h e sand in C r e o s o t e Branch. The q u a n t i t y o f t h i s mat er ia l e n t e r i n g Creo so t eBranch t h r o u g h s e epage a l o n e i s s u f f i c i e n t to m a i n t a i n a cont inuoussheen on the water s u r f a c e .The s i t e i s no t on the N a t i o n a l P r i o r i t i e s L i s t (NPL) but i t has beenused as a test s i te for the revised M i t r e model - hazard ranking system -and may score h i g h enough f or p r o p o s a l t o th e NPL.

B. I n c i d e n t C h a r a c t e r i s t i c s ;The S t a t e o f L o u i s i a n a S t r e a m Contro l C o m m i s s i o n began i n v e s t i g a t i o n s a tt h e A m e r i c a n C r e o s o t e f a c i l i t y i n 1966, c i t i n g h i g h l e v e l s o f p h e n o l sand BOD in p l a n t d i s c h a r g e s . The L o u i s i a n a D e p a r t m e n t o f E n v i r o n m e n t a lQ u a l i t y (LDEQ) i n s p e c t e d t h e f a c i l i t y several t ime s f r om 1982 t o 1986.The i n s p e c t i o n s revealed s p i l l a g e o f creosote, abandoned p i t s and con-t a i n e r s , a n d obv iou s o f f s i t e c o n t a m i n a n t m i g r a t i o n . T h e L D E Q n o t i f i e dthe f a c i l i t y o f the v i o l a t i o n s , and i s sued a l e t t e r o f w a r n i n g on J a n u a r y6, 1983, f o l l o w e d by a C o m p l i a n c e Order on 22 Jan 85. S t a l l w o r t h f a i l e d toc o m p l y w i t h t h e terms o f t h e Order and abandoned th e f a c i l i t y . The LDEQr e f e r r e d th e case t o EPA R e g i o n VI f or c o n s i d e r a t i o n f o r s u p e r f u n d removalor r emedia l a c t i o n on March 17, 1987.A s i t e i n v e s t i g a t i o n was i n i t i a t e d by the Emergency R e s p o n s e Branch onMarch 1 9 , 1987. T h e i n v e s t i g a t i o n i d e n t i f i e d t h r e a t s t o p u b l i c h e a l t hand the environment caused by s o i l , water, and groundwat e r c o n t a m i n a t i o nw i t h v a r i o u s c a r c i n o g e n i c a n d m u t a g e n i c p o l y n u c l e a r aromat i c h y d r o c a r b o n s ,p o l y c h l o r i n a t e d d i b e n z o d i o x i n s a n d p o l y c h l o r i n a t e d d i b e n z o f u r a n s . O f f s i t em i g r a t i o n v ia s u r f a c e r u n o f f and s u b t e r r a n e a n s e e p a g e wa s w e l l documentedand airborn p a r t i c u l a t e t r a n s p o r t was de t ermined to be l i k e l y .T h e s i t e w a s n o t f e n c e d a n d l o ca l r e s i d e n t s , i n c l u d i n g school c h i l d r e n ,f r e q u e n t l y crossed it on a t r a i l that e x t e n d e d f r o m the s i t e access roadt o t h e r e s i d e n t i a l street that f o r m s t h e s ou th ea s t s i t e boundary. T h i sp r o m p t e d EPA R e g i o n VI to i s sue an a d m i s t r a t i v e order to S t a l l w o r t hT i m b e r C o m p a n y r e q u i r i n g f e n c i n g a n d w a r n i n g s i g n i n s t a l l a t i o n o n A p r i l21, 1988. The f e n c e was c o m p l e t e d by S t a l l w o r t h in J u l y , 1P88.EPA Region VI p e r f o r m e d a Removal A c t i o n in March and J u l y , 1988 toprevent o i l s and s l u d g e s s e e p i n g ou t o f t h e s t o rage t ank s f r o m f l o w i n gt h r o u g h t h e s i t e d r a i n a g e d i t c h e s in t o C r e o s o t e Branch. T h e A c t i o nc o n s i s t e d o f d r a i n i n g a b a d l y l e a k i n g tank and c o n s t r u c t i o n o f a r i n gd i k e around the proces s area. A f i l t r a t i o n system was a l s o c on s t ruc t edt o remove o i l y waste f r o m a n t i c i p a t e d s t ormwater o v e r f l o w s f r o m t h ed i k e d area. H o w e v e r , o i l y , creosote and PCP c o n t a m i n a t e d m a t e r i a l s

c o n t i n u e t o seep t h r o u g h the ground i n t o th e d r a i n a g e d i t c h e s and Creo s o t eBranch. T h e p r e v i o u s removal a c t i on s have decreased t h e p o t e n t i a l f o rc a t a s t r o p h i c r e l e a s e s but have not reduced the q u a n t i t y of c o n t a m i n a n t se n t e r i n g t h e s i t e d r a i n a g e d i t c h e s a n d C r e o s o t e Branch. I t a p p e a r s thats ub t e rranean s e e p a g e i s t h e p r e d o m i n a t e route o f o f f s i t e m i g r a t i o n o ft h e s i t e c o n t a m i n a n t s .C o n t a m i n a t i o n o f t h e f l u v i a l a q u i f e r i s o c c u r i n g a n d a p o t e n t i a l e x i s t sf o r c o n t a m i n a n t m i g r a t i o n t h r o u g h natura l sand l e n s e s i n t o t h e S p a r t aS a n d A q u i f e r , t h e C i t y ' s d r i n k i n g water s u p p l y .

D. Q u a n t i t y and T y p e s o f S u b s t a n c e s P r e s e n t :A m u l t i - m e d i a e n v i r o n m e n t a l s a m p l i n g p r o g r a m that u t i l i z e d E P A , T A T , a n d .ERT resources was conduc t ed d u r i n g A u g u s t 24-28, 1987. A d d i t i o n a l sub-s u r f a c e i n v e s t i g a t i o n s have been p e r f o r m e d by ERT on N o v e m b e r 3 - 5 ,1987, and by TAT on July 25 - 27, 1988. T h e s e i n v e s t i g a t i o n s i n c l u d e d ^p r i o r i t y p o l l u t a n t a n a l y s i s o f s o i l , s u r f a c e water a n d s ed imen t s a m p l e sf r o m var iou s l o c a t i o n s on and o f f s i t e , s o i l ga s a n a l y s i s , a ir m o n i t o r i n g °a n d s a m p l i n g , a n d b i o a s s a y s . C E R C L A d e s i g n a t e d h a z a r d o u s s u b s t a n c e si n c l u d i n g var iou s p o l y n u c l e a r aromat i c h y d r o c a r b o n s ( i e . n a p t h a l e n e ,a c e n a p t h e n e , p h e n a n t h r e n e , chry s ene , f l o u r a n t h e n e ) , p o l y c h l o r i n a t e dd i b e n z o d i o x i n s and d i b e n z o f u r a n s , and c h l o r i n a t e d p h e n o l s were f o u n d ins i t e s o i l s , l i q u i d s a n d s l u d g e s i n t h e p l a n t area, t h e s l u d g e l a g o o n ,s i t e d r a i n a g e c our s e s , a n d C r e o s o t e Branch. S p e c i f i c c o m p o u n d s o f concernare l i s t e d by area of occurence b e l ow.

P L A N T A R E AThe so i l around most o f the cookers and s t o r a g e t a n k s i s s a t u r a t e d w i t hcreosote and p e n t a c h l o r o p h e n o l waste. The areas c o n t i g u o u s wi th thef a c i l i t y s t r u c t u r e s c o n t a i n about 1 5 , 5 5 0 cub i c y a r d s o f g r o s s l y contami-nated s o i l . An a d d i t i o n a l 34,250 cubic y a r d s o f c o n t a m i n a t e d s o i l aree s t i m a t e d to be p r e s en t in o th e r areas. The cooker c o n t a i n m e n t areasand th e p o o l s tha t have f o r m e d around th e l e a k i n g t a n k s c o n t a i n about10,000 g a l l o n s o f l i q u i d waste. A b o u t 126,000 g a l l o n s o f l i q u i d s a n ds l u d g e s remain i n t h e t a n k s . T h e f o l l o w i n g c h e m i c a l s have been i d e n t i f i e di n t h e l i q u i d s , s l u d g e s a n d s o i l s f r o m var iou s l o c a t i o n s w i t h i n t h ep l a n t area.

C o m p o u n d C o n c e n t r a t i o n s ( p p m )N a p h t h a l e n e ' 340 - 5,1002 - m e t h y l n a p h t h a l e n e 260 - 8,900A c e n a p h t h e n e 40 - 11,000D i b e n z o f u r a n 31 - 7,200F l u o r e n e 63 - 30,000P e n t a c h l o r o p h e n o l 0 - 4 9P h e n a n t h r e n e 190 - 4,800

A n t h r a c e n e 450 - 7,000Fl uoranthene " 440 - 26,000Pyrene 250 - 15,000B e n z o - ( a ) -anthracene 4,100 - 6,300C h r y s e n e 130 - 20,000B e n z o - ( b ) - f l u o r a n t h e n e 0 - 2,800Benzo- ( k ) - f l uoranthene 74 - 5,900D i b e n z o d i o x i n s ( T C D D e q u i v a l e n t s ) 0.05 - 1.36 ( p p b )S L U D G E P I T— —The s l u d g e pit i s l o c a t e d about 50 meters east of the p l a n t area andc o n t a i n s about 80,000 g a l l o n s o f aqueous b l a c k l i q u i d . T h e f o l l o w i n gc o m p o u n d s were i d e n t i f i e d i n t h e bo t t om s l u d g e s .

C o m p o u n d C o n c e n t r a t i o n s ( p p m )P h e n a n t h r e n e 190F l u o r a n t h e n e 0.58 - 410Pyrene 0.72 - 210Benzo- (a) -anthracene 52Chrys ene 0.52 - 72B e n z o - ( b ) - f l uoranthene 1.3B e n z o - ( k ) - f l u o r a n t h e n e 0.52D i b e n z o d i o x i n s ( T C D D e q u i v a l e n t s ) 0.06 - 0.33 ( p p b )

S L O U G H A R E AThe s l o u g h area l i e s i m m e d i a t e l y east o f the l o c a t i o n where h i s t o r i c a ll a g o o n s a r e t h o u g h t t o have been b a c k f i l l e d . I t a p p e a r s that t h i s areahas recieved r u n o f f f r o m s l u d g e p i t s , which has l e f t a layer o f a tarl i k e s u b s t a n c e tha t covers t h e e n t i r e s u r f a c e o f t h e s l o u g h a n d e x t e n d sa l o n g a s m a l l d r a i n a g e course t o i t s ' c o n f l u e n c e w i t h Creosote Branch.T h i s m a t e r i a l i s e x t r e m e l y v i s c o u s a n d t h e r e f o r e r e l a t i v e l y i m m o b i l e .T h e f o l l o w i n g c o m p o u n d s were i d e n t i f i e d .

C o m p o u n d C o n c e n t r a t i o n s ( p p m )N a p h t h a l e n e 1102 -methyl n a p h t h a l e n e 1,900A c e n a p h t h e n e 73D i b e n z o f u r a n 420 - 8,500

F l u o r e n eP e n t a c h l o r o p h e n o lPhenanthreneAnthrac eneF T u o r a n t h e n ePyreneBenzo-(a)-anthraceneChryseneB e n z o - ( k ) - f l u o r a n t h e n eBenzo-(a)-pyreneD i b e n z o d i o x i n s ( T C D D e q u i v a l e n t s )

1,100 - 14,00014074 - 290210 - 4,0002,600 - 49,0002,100 - 21,0001,400 - 6,300130 - 85,000510 - 5,8001,2001.69 - 9.63 (ppb)

S I T E D R A I N A G E D I T C H E ST h e d r a i n a g e d i t c h e s that traverse t h e s i t e recieve s u r f a c e r u n o f f f r o mthe p l a n t area and sub t erranean s e e p a g e o f creosote wastes that a p p e a rto have i n f i l t r a t e d i n t o the so i l f r o m the p l a n t area and the wastel a g o o n s . P o o l s o f the s e l i q u i d s c o l l e c t i n t h e bo t toms o f t h e d i t c h e s ,a n d a r e washed i n t o C r e o s o t e Branch b y r a i n f a l l r u n o f f . T h e f o l l o w i n gc o m p o u n d s were i d e n t i f i e d i n t h e o i l y s e e p a g e areas.

C o m p o u n d C o n c e n t r a t i o n s ( p p m )N a p h t h a l e n e2 - m e t h y l n a p h t h a l e n eA c e n a p h t h e n eD i b e n z o f u r a nF l u o r e n eP e n t a c h l o r o p h e n o lA n t h r a c e n eF l u o r a n t h e n ePyreneBenzo-(a)-an thrac eneChryseneB e n z o - ( b ) - f 1 u o r a n t h e n eB e n z o - ( a ) - p y r e n eD i b e n z o d i o x i n s ( T C D D e q u i v a l e n t s )

1,300 - 1,4001,200 - 2,3002601,500 - 4,1002,200 - 6,9006206,0003,300 - 6,3005,4001,7001,700 - 5,2001,400 - 1,7007900.03 - 0.39 ( p p b )

C R E O S O T E B R A N C HC r e o s o t e Branch f o r m s the n o r t h boundary of the s i t e , and receives s i t er u n o f f f r o m t h e d r a i n a g e d i t c h e s a n d sheet f l o w . I n a d d i t i o n ,c o n t a m i n a t e d g r o u n d w a t e r and raw wastes s e ep i n t o the s t r eam a l o n g thenor thern s i t e boundary. T h e s tream s u p p o r t s very l i t t l e f a u n a , s o s p or tf i s h i n g i s u n l i k e l y , b u t area c h i l d r e n r e p o r t e d l y swim i n t h e d e e p e rp o o l s . T h e f o l l o w i n g c o m p o u n d s were i d e n t i f i e d i n t h e s tream s e d i m e n t s .

C o m p o u n d C o n c e n t r a t i o n s ( p p m )N a p h t h a l e n eA c e n a p h t h e n eD i b e n z o f u r a nF l u o r e n eP h e n a n t h r e n eA n t h r a c e n eF l u o r a n t h e n ePyreneBenzo-(a)-anthrac eneChryseneB e n z o - ( b ) - f l u o r a n t h e n eB e n z o - ( k ) - f 1 u o r a n t h e n eB e n z o - ( a ) - p y r e n eD i b e n z o d i o x i n s ( T C D D e q u i v a l e n t s )

G R O U N D W A T E R

467 - 7 15 - 5 110 - 42190 - 4,8001.2 - 521 - 1106.6 - 1201.4 - 431.3 - 421.5 - 3644 - 498 - 1 40.05 ( p p b )

The d e p t h to g r o u n d w a t e r at the s i t e i s g e n e r a l l y l e s s t h a n 10 f e e t andt h e g r o u n d w a t e r s u r f a c e s l o p e s f r o m s ou th t o nor th toward C r e o s o t e Branch.The g r o u n d w a t e r s e e p a g e v e l o c i t y was e s t i m a t e d to be a p p r o x i m a t e l y 0 .9f e e t / d a y ( t r i a n g u l a t i o n m e t h o d ) . G r o u n d w a t e r s a m p l e s were c o l l e c t e df r o m e i g h t s h a l l o w w e l l s (7 to 12 f e e t ) by the ERT on N o v e m b e r 3 - 5 , 1987.T h e f o l l o w i n g c o n t a m i n a n t s were i d e n t i f i e d :C o m p o u n d

N a p h t h a l e n e2 - m e t h y l n a p h t h a l e n eA c e n a p h t h e n eF l u o r e n eP h e n a n t h r e n eA n t h r a c e n eF l u o r a n t h e n ePyreneB e n z o - ( a ) - a n t h r a c e n eC h r y s e n eB e n z o - ( b ) - f l u o r a n t h e n eB e n z o - ( a ) - p y r e n eM e t h y l e n e c h l o r i d eb r o m o - d i c h l o r o m e t h a n eT r i c h l o r o e t h e n eBenzeneT o l u e n eEthyl BenzeneC h l o r o b e n z e n e1,2 d i c h l o r o e t h a n e

C o n c e n t r a t i o n s ( p p b )42.0 - 35,10012.0 - 6,4308027,730 - 7,69042.4 -304 -356 -30.6 -16.6 -72 -79 -313 -2.3 -10.7 -42 -44.2 -8.7 -29.4 -44.36

21,8003,75010,6007,5401,3101,280626356469268431,0602,2705665

8

i j

: !

E. S t a t e and Local A u t h o r i t i e s R o l e s :T h e L o u i s i a n n a D e p a r t m e n t o f E n v i r o n m e n t a l Q u a l i t y - H a z a r d o u s W a s t eManagement D i v i s i o n ( L D E Q - H W M D ) i n s p e c t e d t h e f a c i l i t y several t imesf r o m 1982 to 1986. The LDEQ - HWMD n o t i f i e d th e f a c i l i t y o f v i o l a t i o n sand is sued two enforcement ac t ions ( l e t t e r of warning on 0 1 / 0 6 / 8 3 , and aC o m p l i a n c e Order on 0 1 / 2 2 / 8 5 ) . The s i t e operator , S t a l l worth T i m b e r company,did not c o m p l y wi th the terms of the Order, and when the s i t e was f o u n dabandoned in J u n e 1986, the case was t r a n s f e r r e d to the I n a c t i v e andA b a n d o n e d . S i t e s D i v i s i o n ( I A S D ) o f LDEQ. T h e S t a t e r e f erred t h e s i t e t oEPA Region VI on March 17, 1987.

F . Other A c t i o n s T o Date:EPA Region VI i s s u ed an A d m i n i s t r a t i v e Order t o S t a l l w o r t h T i m b e r C o m p a n yon A p r i l 21, 1988. The Order required c on s t ru c t i on of a f e n c e aroundth e s i t e and i n s t a l l a t i o n o f warning s i gn s . S t a l l w o r t h c o m p l e t e d th erequired ac t i ons in J u l y , 1988 wi th over s ight f r o m an EPA On-SceneC o o r d i n a t o r .EPA Region VI i n i t i a t e d a f u n d l e a d removal ac t ion t o prevent o f f s i t em i g r a t i o n of creosote f r o m a d e t e r i o r a t i n g s t o r a g e tank in M a r c h 1988.The l e a k i n g tank was d r a i n e d and a berm was cons tructed around the processf a c i l i t y . The berm was r e i n f o r c e d in J u l y , 1988 due t o near o v e r t o p p i n gand an o v e r f l o w system c o n s i s t i n g of an oil - s k i m m i n g s t a n d p i p e and ag r a v i t y f l o w , mixed b e d f i l t r a t i o n system w a s a d d e d t o a l l o w ra inwaterto e s cape.

I I I . T H R E A T T O P U B L I C H E A L T H O R W E L F A R E O R T H E E N V I R O N M E N TA . T h r e a t t o P u b l i c H e a l t h o r W e l f a r e :

T h i s s i t e p r e s e n t s a threa t to human h e a l t h due to the pre s ence ando f f s i t e m i g r a t i o n o f l a r g e q u a n t i t i e s o f hazardou s c h e m i c a l s , and uncon-t r o l l e d p o t e n t i a l e x p o s u r e routes that i n c l u d e direc t c o n t a c t , i n g e s t i o n ,and i n h a l a t i o n . The s i t e assessment has i d e n t i f i e d numerous hazardousa n d c a r c i n o g e n i c c h e m i c a l s i n s i t e s o i l s , waste d i s p o s a l areas, d r a i n a g ep a t h w a y s , and s h a l l o w groundwater . T h e s e c h e m i c a l s have a l s o been f o u n din Creo so t e Branch, a waterway that borders the s i te. A t m o s p h e r i c t ran spor tof v o l a t i l e and p a r t i c l e sorbed compounds is a l s o s u sp e c t ed but has notbeen c o n f i r m e d .Creo so t e i s a c o m p l e x mix ture o f p o l y c y c l i c aromatic hydrocarbons (PAH)d e r i v e d f r o m coal tar. The s ub s t anc e i s known to b i o m a g n i f y , and carcino-g e n i c i t y and mutageni c i ty has been w e l l demons tra t ed in l a b o r a t o r y a n i m a l sf o r e x p o s u r e routes i n c l u d i n g i n h a l a t i o n , i n g e s t i o n , a n d d i r e c t contac t .

OO

To humans , creosote i s a s k i n and r e s p i r a t o r y i r r i t a n t c a p a b l e o f c a u s i n gsecond degree burns u p o n e x p o s u r e for a few minu t e s , and i s a l s o a c u t e l yt o x i c . I n g e s t i o n of 7 g by a d u l t s and 1 or 2 g by c h i l d r e n has provedf a t a l a f t e r 14 to 36 hours. ERA has c o n c l u d e d that creosote c o n s t i t u t e sa human s k i n cancer h a z a r d , and pose s a s i g n i f i c a n t but u n q u a n t i f i a b l er i sk o f m u t a g e n i c i t y .P A H ' s a r e h i g h l y l i p o p h i l i c a n d a r e e a s i l y absorbed t h r o u g h t h e l i n i n g so f t h e r e s p i r a t o r y and g a s t r o i n t e s t i n a l t rac t s . S e v e r a l i n d i v i d u a l PAHhave been shown to be p r o b a b l e c a r c i n o g e n s to humans and other a n i m a l s(CA6 g r o u p Bl or B2, F e d e r a l R e g i s t e r , 1984). A m o n g tho s e that arepresent at t h i s s i t e are b e n z o - ( a ) - a n t h r a c e n e , b e n z o - ( b ) f l u o r a n t h e n e ,b e n z o - ( k ) - f l u o r a n t h e n e , and b e n z o - ( a ) - p y r e n e . S u s p e c t human carc inogens .( C A 6 G r o u p C , F e d e r a l R e g i s t e r , 1984) pre s ent o n s i t e i n c l u d e anthraceneand chrysene.Expo sure and environmental q u a l i t y c r i t e r ia have been d e v e l o p e d for PAHa s a c l a s s . T h e O c c u p a t i o n a l S a f e t y a n d H e a l t h A d m i n i s t r a t i o n ( O S H A )e s t a b l i s h e d an 8-hour TWA concentra t ion l i m i t of 0.2 m g / c u . m for theb e n z e n e - s o l u b l e f r a c t i o n o f coal t a r p i t c h v o l a t i l e s i n t h e w o r k p l a c e .ERA recommends an ambient water q u a l i t y c r i t e r ia for the sum of allc a r c i n o g e n i c P A H o f 2 8 n g / L . E P A d e r i v e d c a r c i n o g e n i c p o t e n c y f a c t o r sfor humans of 11.53 m g / k g / d a y - 1 (oral r o u t e ) and 6.11 m g / k g / d a y 1( i n h a l a t i o n ) . T h e c o r r e s p o n d i n g i n h a l a t i o n dose a s s o c i a t e d w i t h a nincreased l i f e t i m e cancer r i sk o f 1/100,000 i s 0.002339 u g / K g / d a y .The p o t e n t i a l f or d i r e c t contact w i th these hazardou s sub s tance s byhumans remains h i g h i n o f f - s i t e areas d u e t o t h e s t a n d i n g p o o l s a n ds u r f a c e f i l m s o f creosote in Creosote Branch. The extent to which Creoso t eBranch i s used f or r e c r e a t i o n a l p u r p o s e s i s unknown bu t c h i l d r e n thatwere in t erv i ewed on the s i t e p r i o r to f e n c i n g c l a i m e d to have swam therer e g u l a r l y . I n g e s t i o n o f c o n t a m i n a t e d s o i l and water by any c h i l d r e np l a y i n g in Creo s o t e Branch w o u l d b e p r o b a b l e .A p o t e n t i a l f o r e x p o s u r e a l s o ex i s t in t h e Dugdemona River. The S t a t e o fL o u i s i a n n a h a s d e s i g n a t e d water uses f o r t h e D u g d e m o n a that i n c l u d ep r i m a r y contact r e c r e a t i o n , s e c o n d a r y contact r e c r ea t i on , and f i s h andw i l d l i f e p r o p a g a t i o n . P r i m a r y contact r e crea t ion i s d e f i n e d a s "anyr e c r e a t i o n a l or o ther water use in w h i c h there i s p r o l o n g e d and i n t i m a t econtac t w i t h t h e water i n v o l v i n g c o n s i d e r a b l e r i s k o f i n g e s t i n g water i nq u a n t i t i e s s u f f i c i e n t t o p o s e a s i g n i f i c a n t h e a l t h hazard such a s s w i m m i n g ,water s k i i n g , s k i n d i v i n g , w a d i n g a n d o ther s i m i l a r a c t i v i t i e s " .A i r b o r n e c o n t a m i n a n t s have not been d e t e c t e d , but the threat f r o m contami-nated p a r t i c u l a t e s d u r i n g dry, w i n d y p e r i o d s must b e c o n s i d e r e d s i g n i f i c a n tsince the s i t e i s o p e n , f l a t , and o n l y s p a r s e l y vege ta t ed . Dust c l o u d shave been ob s e rved , but not s a m p l e d , d u r i n g the s i t e a s s e s sment .

10B. T h r e a t s to the E n v i r o n m e n t :

A d v e r s e e n v i r o n m e n t a l i m p a c t s o f creosote ar e w e l l d o c u m e n t e d . Thec o m p o u n d i s t o x i c t o a q u a t i c l i f e and ha s been l i n k e d t o h i g h i n c i d e n c e so f tumors i n f i s h . E f f o r t s t o c o l l e c t f i s h f r o m t h e i m p a c t e d segment o fCreo s o t e Branch for t i s s u e a n a l y s e s were u n s u c c e s s f u l because they werea b s e n t , w i t h t h e e x c e p t i o n o f one s p e c i e s ( G a m b u s i a a f f i n i s ) . By c o m p a r i s o n ,creosote Branch u p s t r e a m f r o m the s i t e a p p e a r e d to s u p p o r t a diversef a u n a . S t a t i c b i o a s s a y s p e r f o r m e d o n s e d i m e n t s f r o m t h e s i t e d r a i n a g ed i t c h e s and C r e o s o t e Branch i n d i c a t e d moderate t o x i c i t y to te s t o r g a n i s m si n c l u d i n g D a p h n i a m a g n a , S e l a n a s t r u m c a p r i c o r n u t u m , a n d P i m e p h a l e s s p .I V . E N F O R C E M E N T

See a t ta chment 1.V . P R O P O S E D A C T I O N S A N D C O S T S

A . T h e P r o p o s e d A c t i o n :T h e p r o p o s e d a c t i o n w i l l g r e a t l y reduce t h e o f f s i t e m i g r a t i o n o f creosotea n d P C P c o n t a m i n a t e d w a s t e s , s u r f a c e water , a n d s o i l s . T h i s a c t i onw i l l n o t prevent s u b t e r r a n e a n s e e p a g e o f creosote t h r o u g h t h e s o i l , i n t oC r e o s o t e Branch. Removal A l t e r n a t i v e s i n c l u d i n g b e n t o n i t e s l u r r y w a l l s ,soi l w a s h i n g , and p r i m a r y o i l recovery sys tems w i l l b e e v a l u a t e d , and i ff o u n d f e a s i b l e , w i l l b e p r o p o s e d i n f u t u r e a c t i o n memoranda.T h e p r o p o s e d a c t i o n i s c o m p o s e d o f t w o d i s t i n c t f u n c t i o n a l u n i t s , w h i c hwhen c o m b i n e d , w i l l i m m o b i l i z e c o n t a m i n a t e d s o i l s a n d s l u d g e s , a n d d i v e r tu n c o n t a m i n a t e d s i t e run-on. T h e s e a c t i o n s w i l l c o n t r i b u t e s i g n i f i c a n t l yto any l o n g term remedial a c t i o n s or f u t u r e removal a c t i on s that may bec o n d u c t e d , a n d a r e p a r t i c u l a r l y w e l l s u i t e d f o r t h e most l i k e l y r emedia la l t e r n a t i v e s ; s o i l w a s h i n g , l a n d f a r m i n g , a n d o ther f o r m s o f i n - s i t ub i o l o g i c a l t r e a t m e n t . Removal a l t e r n a t i v e s r e q u i r i n g o f f s i t e d i s p o s a lwere no t c o n s i d e r e d f or c o n t a m i n a t e d s l u d g e s and s o i l s because o f th epresence of various d i b e n z o - d i o x i n s and d i b e n z o - f u r a n s .

1. P l a n t AreaT h e s t orage t a n k s i n t h e p l a n t area c o n t a i n about 56,000 g a l l o n s o f s l u d g e s ,10,000 g a l l o n s o f o i l y m a t e r i a l , and 50,000 g a l l o n s o f c o n t a m i n a t e d water.I n a d d i t i o n , t h e pre s sure t r e a t i n g c y l i n d e r s containment ba s in s , a n ds t a n d i n g p o o l s around t h e t a n k s c o n t a i n a n o t h e r 20,000 g a l l o n s o f o i l s ,s l u d g e s , and c o n t a m i n a t e d water. One s t o r a g e tank c o n t a i n s about 50cubic f e e t o f g r a n u l a t e d P C P . L e a k a g e f r o m th e s e s t r u c t u r e s h a s r e s u l t e din gro s s c o n t a m i n a t i o n o f a p p r o x i m a t e l y 15,550 cub i c yard s o f s o i l beneathand s u r r o u n d i n g th e p l a n t area.

11P r o p o s e d A c t i o n :S i t e s t ru c tur e s w i l l b e removed, c l e a n e d , a n d l a n d f i l l e d o f f s i t e i norder t o g a i n access t o the c o n t a m i n a t e d s o i l s , s l u d g e s , and o i l s .C o n t a m i n a t e d m a t e r i a l s w i l l b e d i s p o s e d o f a s f o l l o w s :C o n t a m i n a t e d W a t e r - T r e a t m e n t by p h y s i c a l o i l / w a t e r s e p a r a t i o n anda c t i v a t e d carbon f i l t r a t i o n w i th u l t i m a t e d i s c h a r g e t o C r e o s o t e Branch.O i l y M a t e r i a l s - I n c i n e r a t i o n or o ther permanent d e s t r u c t i o n t e c h n o l o g y <o"i n accordance w i t h E P A ' s o f f s i t e d i s p o s a l p o l i c y . "

fS l u d g e s - s o l i d i f i c a t i o n and on s i t e e n c a p s u l a t i o n in the e x i s t i n g s l u d g el a g o o n .

= C o n t a m i n a t e d s o i l - e n c a p s u l a t i o n s i m i l a r t o s l u d g e s f o r t h e most h e a v i l y| c o n t a m i n a t e d s o i l s ; r u n o f f contro l f o r r e m a i n i n g areas.iA l t e r n a t i v e s C o n s i d e r e d :

: T r e a t m e n t t e c h n o l o g i e s c o n s i d e r e d i n c l u d e d : i n - s i t u b i o r e m e d i a t i o n ;> e x t r a c t i o n ; and m o b i l e i n c i n e r a t i o n .3

I n - s i t u b i o r e m e d i a t i o n t e c h n i q u e s such a s l a n d f a r m i n g o r b i o l o g i c a lreac tor s are v i a b l e t r ea tment a l t e r n a t i v e s f or waste s pr e s en t a tth e A m e r i c a n C r e o s o t e s i t e . H o w e v e r , th e s e p r o c e s s e s ar e s l o w and c o u l dnot be c o m p l e t e d w i t h i n the 1-year s t a t u t o r y removal t i m e l i m i t .I n a d d i t i o n , th e s e t e c h n i q u e s c a n d e g r a d e l o c a l a i r q u a l i t y d u e t ov o l a t i l i z a t i o n o f some o f the creosote c o n s t i t u e n t s , and d e g r a d a t i o nmay not be c o m p l e t e . Cos t e s t i m a t e s for b i o r e m e d i a t i o n are e x t r e m e l y- v a r i a b l e ($40 to $400 per t o n ) due to u n c e r t a i n t i e s in t i m e r equ ir ement sa n d pro c e s s e f f i c i e n c i e s .E x t r a c t i o n t e c h n i q u e s such a s s o i l w a s h i n g w i t h s o l v e n t s , s u r f a c t a n t s ,or amines can be p e r f o r m e d i n - s i t u or in r ea c t i on v e s s e l s . The l a t t e r- t e c h n i q u e s w o u l d no t b e cost e f f e c t i v e f or the r e l a t i v e l y s m a l l vo lume s" of m a t e r i a l s pre sent in the t a n k s and con ta inment areas. T h e s e t e c h n i q u e sw o u l d b e f e a s i b l e i f a l l t h e c o n t a m i n a t e d s i t e s o i l s were t o b e t r e a t e d ,4 but the cost of e x c a v a t i o n w o u l d be p r o h i b i t i v e when compared w i t h i n - s i t u- t r ea tment m e t h o d o l o g i e s . I n - s i t u s o i l w a s h i n g a p p e a r s to be a v i a b l etreatment a l t e r n a t i v e f o r t h e c o n t a m i n a t e d s i t e s o i l s , p a r t i c u l a r l y i fused i n c o n j u n c t i o n w i t h i n - s i t u b i o l o g i c a l t r e a t m e n t . T i m e r equ ir ement svary w i d e l y , bu t w o u l d l i k e l y exceed th e 1-year s t a t u t o r y removal t ime^ l i m i t . C o s t s cannot be e s t i m a t e d a c c u r a t e l y w i t h o u t c o n d u c t i n g benchs c a l e t e s t s t o d e t e r m i n e t h e w a s h i n g proce s s e f f i c i e n c y .

12M o b i l e I n c i n e r a t i o n w o u l d b e e f f e c t i v e i n d e s t r o y i n g a l l creosote a n dp e n t a c h l o p h e n o l c o n t a m i n a t e d m a t e r i a l s pr e s en t on the s i t e . H o w e v e r ,the costs a s soc ia t ed wi th t r a n s p o r t a t i o n and set up of a m o b i l ei n c i n e r a t o r wou ld b e p r o h i b i t i v e l y h i g h f or th e r e l a t i v e l y s m a l l amountof c o n t a m i n a t e d m a t e r i a l t ha t c o u l d be reached w i thou t e x t e n s i v e e x cava t i on .A l t h o u g h the cost can o n l y be a c c u r a t e l y e s t ima t ed by s o l i c i t i n gc o m p e t i t i v e b i d s , treatment costs at s i m i l a r removal s i t e s have rangedf r o m $600 to $800 per ton, which wou ld increase the p r o j e c t c e i l i n g byabout $250,000. The cost of e x cava t i on and i n c i n e r a t i o n of allc o n t a m i n a t e d s o i l s w o u l d exceed $ 1 0 m i l l i o n .

2. S t o r m W a t e r D i v e r s i o nR u n o f f f r o m th e s i t e f l o w s f r o m southwest t o northeast t h r o u g h threed r a i n a g e d i t c h e s in t o Creosote Branch (see f i g u r e 3). D i t c h 3 , thel a r g e s t o f t h e d r a i n a g e d i t c h e s , o r i g i n a t e s u p g r a d i e n t f r o m t h e s i t eand d i s c h a r g e s t h r o u g h t h e most h e a v i l y c o n t a m i n a t e d g r o u n d w a t e r s e e p a g ed i s c h a r g e area. T h e s e d i t c h e s a r e r e s p o n s i b l e f o r t h e m a j o r i t y o fo f f s i t e contaminant m i g r a t i o n .P r o p o s e d A c t i o n :D i t c h 3 w i l l be d iv e r t ed west in to Creo so t e Branch u p g r a d i e n t f r o m thecon taminat ed areas (see f i g u r e 3). The p o r t i o n o f d i t c h 3 downstream oft h e d i v e r s i o n , a n d d i t c h e s 1 , 1 A , a n d 2 w i l l b e f i l l e d . R u n o f f d i v e r s i o nd i t c h e s w i l l be e x t e n d e d east and west f r o m the pond to C r e o s o t e Branchto direct r u n o f f around the s i t e (see f i g u r e 3). The Creoso t e Branchchannel w i l l be improved by c l e a r i n g and s n a g g i n g f r o m the c o n f l u e n c ew i t h t h e d r a i n a g e d i t c h 3 d i v e r s i o n channe l t o t h e c o n f l u e n c e w i t h t h ee x i s t i n g n o r t h e r n e n d o f d r a i n a g e d i t c h 3 . A l l d r a i n a g e contro l f e a t u r e sw i l l b e c a p a b l e o f c o n t r o l l i n g th e 24-hr, 25-year r a i n f a l l ev ent , whichi s the d e s i g n c r i t e r i a used by the C i t y o f W i n n f i e l d , LA.A l t e r n a t i v e s c o n s i d e r e d :The d i v e r s i o n o f d r a i n a g e d i t c h 3 westward to C r e o s o t e Branch i s e s s e n t i a lto any r u n o f f control scheme. The east and west d i v e r s i o n d i t c h e s p r o v i d el e s s e r measures of p r o t e c t i o n , and a l t e r n a t i v e s were con s ider ed whiche m p l o y e d var iou s c o m b i n a t i o n s o f th e s e d i t c h e s .Diver s i on of d i t c h 3 wi thou t the east and west r u n o f f d i v e r s i o n d i t c h e sw o u l d prevent stormwater d i s c h a r g e s f r o m e n t r a i n i n g t h e o i l y m a t e r i a l sa n d c o n t a m i n a t e d g r o u n d w a t e r s e e p a g e f r o m t h e nor th e rn h a l f o f t h e d i t c h .H o w e v e r , r u n o f f f r o m t h e s ou th e rn edge o f t h e s i t e w o u l d s t i l l crossareas w i t h e x t en s ive s u r f a c e c o n t a m i n a t i o n , and carry these c on taminant snorthward toward Creoso te Branch.

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13T h e r u n o f f d i v e r s i o n d i t c h e s prevent u n c o n t a m i n a t e d o f f s i t e r u n o f f f r o me n t e r i n g t h e s i t e , t h u s m i n i m i z i n g t h e vo lumes o f c o n t a m i n a t e d waterthat must be treated or a l l o w e d to d i s c h a r g e to Creo s o t e Branch. Thecos t s o f the r u n o f f d i v e r s i o n d i t c h e s are r e l a t i v e l y l o w , so they arec o n s i d e r e d to be a cost e f f i c i e n t method of m i n i m i z i n g the o f f s i t em i g r a t i o n o f the s i t e c o n t a m i n a n t s .P r o p o s e d P r o j e c t C o s t s

E X T R A M U R A L C O S T SExtramural C l e a n u p C o n t r a c t o r ................... $800,000TAT C o s t s ....................................... $50,000 l^

S u b t o t a l , Ex tramural Direc t C o s t s .......... $850,000$>

15% C o n t i n g e n c y of A b o v e C o s t s ............. $137,000T O T A L E X T R A M U R A L C O S T S ............... $987,000

I N T R A M U R A L C O S T SI n t r a m u r a l Direc t C o s t s ........................ $40,000I n t r a m u r a l I n d i r e c t C o s t s ...................... $60,000

T O T A L I N T R A M U R A L C O S T S .............. $100,000T O T A L R E M O V A L P R O J E C T C E I L I N G R E Q U E S T E D ............. $1,087,000P R E V I O U S R E M O V A L E X P E N D I T U R E S ....................... $180,200T O T A L C E I L I N G T O D A T E ............................... $1,267,200

V I . E X P E C T E D C H A N G E I N T H E S I T U A T I O N S H O U L D N O A C T I O N B E T A K E N O RA C T I O N B E D E L A Y E D

T h e c o n t a m i n a n t s pr e s en t a t t h e A m e r i c a n Creo s o t e S i t e , a r e e n v i r o n m e n t a l l yp e r s i s t e n t . T h e i r c o n c e n t r a t i o n s w i l l n o t change s i g n i f i c a n t l y i n t h enear f u t u r e . O f f s i t e m i g r a t i o n o f the s e c o n t a m i n a n t s w i l l c o n t i n u e a tt h e pre s ent rate u n t i l t h e sources ar e d e p l e t e d . The t h r e a t s a r i s i n gf r o m t h e p o t e n t i a l s f o r human e x p o s u r e t o t h e s e c h e m i c a l s v i a d i r e c tc o n t a c t , i n h a l a t i o n , a n d i n g e s t i o n w i l l remain s u b s t a n t i a l l y u n c h a n g e d .

14H o w e v e r , t h e r i sk t o l o c a l r e s i d e n t s w i l l increase w i t h th e p a s s a g e o ft ime because the c h r o n i c e x p o s u r e s increase the p r o b a b i l i t y o f adver s eh e a l t h e f f e c t s .The t h r e a t s t o area g r o u n d w a t e r a q u i f e r s w i l l increase a s the c o n t a m i n a n t sc o n t i n u e t o m i g r a t e t h r o u g h th e s u b s t r a t a .

V I I . I M P O R T A N T P O L I C Y I S S U E SThe American Creosote S i t e has been used as a test s i t e for the newmitre-model S u p e r f u n d H a z a r d R a n k i n g S y s t e m and i t a p p e a r s that i t c ou ldb e p r o p o s e d f o r a d d i t i o n t o t h e NPL. The p r o p o s e d removal action w i l ls i g n i f i c a n t l y contr ibu t e to any f u t u r e l o n g term remedial act ions thatmay be under taken at the s i te. In a d d i t i o n , the p r o p o s e d act ion iscons i s t ent wi th ERA o f f - s i t e d i s p o s a l p o l i c i e s and w i l l c o n t r i b u t e t ot h e u l t i m a t e d e s t r u c t i o n o f some o f th e s i t e contaminant s . If f u t u r eremedial ac t ions are not u n d e r t a k e n , the p r o p o s e d ac t ions w i l l continueto pr event o f f s i t e c on taminan t m i g r a t i o n and be p r o t e c t i v e o f humanh e a l t h and the e n v i r o n m e n t .

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V I I I . R E C O M M E N D A T I O NBecause c o n d i t i o n s a t t h e s i t e meet t h e N C R s e c t i o n 300.65 ( b ) ( 2 ) c r i t e r i afor a r e m o v a l , I recommend your a p p r o v a l of the p r o p o s e d removal a c t i o n .The e s t i m a t e d t o t a l p r o j e c t co s t s are $1,087,000 of which $800,000 arefor extramural c l e a n u p contractor costs. You may i n d i c a t e your a p p r o v a lor d i s a p p r o v a l by s i g n i n g below.

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T h e on ly v i a b l e P o t e n t i a l l y R e s p o n s i b l e Party f o r t h e p r o p o s e d RemovalA c t i o n a t t h e A m e r i c a n Creo so t e s i t e i s t h e S t a l l w o r t h T i m b e r C o m p a n y ,I n c .An A d m i s t r a t i v e Order (Docke t N u m b e r C E R C L A - V I - 0 4 - 8 9 ) w i l l b e i s sued t oS t a l l w o r t h T i m b e r C o m p a n y p e n d i n g t h e R e g i o n a l A d m i s t r a t o r ' s a p p r o v a lof an A c t i o n Memorandum.I f S t a l l w o r t h T i m b e r Company r e f u s e s t o c o m p l y w i t h t h e terms o f t h eA d m i s t r a t i v e O r d e r , t h e E P A R e g i o n V I Emergency R e s p o n s e Branch w i l lu n d e r t a k e th e Removal A c t i o n p r o p o s e d in th e A c t i o n Memorandum.