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# STAT E O F COLORAD O Ro y Romer , Governo r Patt i Shwayder , Executiv e Directo r Dedicated to protecting and improving the health and environment of the people of Colorado HAZARDOU S MATERIAL S AN D WAST E MANAGEMEN T DIVISIO N http://www.cdphe.state.co.us/hm

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. 6t h Street , Roo m 23 2 prj—— , n -— ; Denver , Colorad o 80246-153 0 Gran d Junction , Colorad o 8150 1 -276 8 VXUOrad O Uepartmen t Phon e (303 ) 692-330 0 Phon e

(970 ) 248-716 4 o f Publi c Healt h F a x (303 ) 759-5355 Fa x (970 ) 248-719 8 an d Environmen t Novembe r 10,199 8

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. Rebecc a Thoma s c: : ^ Remedia l Projec t Manage r ~~ • • U.S

. EPA , Regio n VIII , EPR-S R g ; :° 99 9 18t h Street , Suit e 50 0 £ 5 ^ g Denver , Colorad o 80202-240 5 i : t ; S RE : Stat e Concurrence o n OU- 9 Fina l Residentia l Soil s Feasibilit y Stud y (date d Jul y 1998 ) Dea r Ms

. Thomas : Th e comment s belo w reflec t ou r remainin g majo r issue s an d Stat e ARAR s deficiencie s pertainin g t o th e fina l F S document

. T h e followin g item s remai n F S issue s o f concern : 1

. Th e tex t fo r Alternativ e 7 shoul d b e revise d t o mor e accuratel y reflec t th e curren t Kid s Firs t Program' s practic e o f accomodatin g th e homeowner' s preference s a s part o f th e Kid s Firs t Wor k Grou p deliberativ e process o f remed y selection

. Typically , th e deliberativ e remed y selectio n proces s associate d wit h Alternativ e 7 shoul d b e i n accordanc e wit h th e propert y owner' s preference

. I n addition , th e propert y owne r shoul d full y understand an y institutiona l control s tha t woul d b e associate d wit h leavin g waste s o n his/he r property

. 2

. Sectio n 3.4.3. 5 o f th e F S mention s variou s institutiona l control s suc h a s lan d us e controls , dee d restrictions , permitting , etc. , tha t coul d b e use d a s a separat e remedia l alternativ e o r a s a componen t o f variou s othe r remedia l alternatives

. However , th e F S fail s t o presen t a n in-dept h discussio n o f thi s issue

. A mor e detaile d discussio n o f al l the potentia l institutiona l control s i s needed , especiall y a discussio n o f ho w the y woul d appl y t o remedia l Alternativ e 7 (se e previou s comment)

. Such specific s as : whic h institutiona l control s wil l b e employe d for th e variou s alternatives , how the y wil l b e employed , an d b y who m the y wil l b e employe d shoul d b e full y discussed

. I n orde r fo r th e F S t o adequatel y evaluat e effectiveness , implementability , an d cost , thi s crucia l issu e shoul d no t b e deferre d unti l th e desig n phas e o f th eremedia l

process

. (Als o see : CDPH E Genera l Commen t # 2 i n correspondenc e t o EP A date d Ma y 28 , 199 6 o n the Draf t Residentia l Soil s F S and Genera l Commen t # 7 i n correspondenc e date d Januar y 8 , 199 7 o n th e Redraf t o f Alternative s 7 a an d 7b. ) Also , pleas e refe r t o EPA' s Draf t Referenc e Manua l o n Institutiona l Controls , Marc h 1998 , fo r earl y integratio n o f institutiona l contro l considerations

. 3

. A n on-sit e repositor y fo r the disposa l o f residentia l soil s i s mentioned , however , ther e i s n o discussio n o f wher e th e repositor y wil l b e located

. Th e specifi c location , includin g siz e and a discussio n o f sitin g criteri a shoul d b e included

. Accordingly , Stat e Soli d Wast e Regulation s Pertainin g t o Soli d Wast e Disposa l Sit e an d Facilitie s ( 6 CC R 1007-2 ) Section s 2 & 3 shoul d b e include d a s a potentiall y relevan t an d appropriat e ARAR

. 4

. Th e CDPHE , APCD , Regulatio n 1 9 i s currentl y bein g evaluate d a s potentiall y applicabl e o r relevan t and appropriat e (ARAR ) fo r lead-base d pain t abatement s (i.e. , remediations)

. Th e CDPHE , a s you know , i s currentl y activel y workin g wit h EP A Regio n VII I lead-base d paint progra m representatives t o determin e whic h element s o f thi s regulatio n ma y affec t remedia l activitie s i n OU-9

. An y issue s i n thi s contex t wil l b e resolve d a s soo n a s possible

. 5

. Th e CDPHE , APC D ha s identifie d th e followin g ARAR s tha t hav e bee n omitted , i n Sectio n 2.4 :

n Pag e 2-15

. NAAOS

- NAAQ S appl y becaus e Colorad o assesse s air qualit y permit s fo r complianc e wit h NAAQS

. Althoug h exempt fro m permi t administrativ e procedures , activitie s mus t compl y wit h substantiv e requirements

. 2 ) Pag e 2-1 5 Stat e Lea d Standard

Th e Colorad o ambien t ai r qualit y standar d fo r lead , contained i n Regulatio n 8 , applie s t o th e site

. Th e Stat e standar d i s 1. 5 ug/m 3 a s a monthl y average . Thi s i s mor e stringent tha n th e lea d NAAQS , whic h i s expresse d a s a quarterl y average . 3^ > Pag e 2-15

. Stat e TS P Standards

Colorad o ha s primar y an d secondar y standard s fo r Tota l Suspende dParticulat

e matte r i n ambien t air

. Thes e ma y b e foun d i n th e Stat e ambien t ai r qualit y standard s regulation

. Bot h primar y an d secondar y standard s apply

. 4 ) Pag e 2-19

. APE N Requirement

Thes e wor k activitie s ar e no t exemp t fro m th e requiremen t t o fil e a n APEN

. Regulatio n 3, Par t A , Sectio n II , D , j states tha t th e APE N exemptio n i s for : "Disturbance o f surfac e area s fo r purpose s o f land development , whic h d o no t excee d 2 5 contiguou s acre s an d whic h d o no t excee d si x month s i n duration

. (Thi s doe s no t includ e minin g operation s or disturbanc e o f contaminate d soil). " Sinc e thes e wor k activitie s ma y involv e th e remova l o f contaminate d soils , a n APE N mus t b e filed

. 5 } Pag e 2-19

. Regulatio n 1

- Th e tex t i n sectio n 2.4.5. 2 indicates tha t a n "ai r pollutio n contro l pla n wil l b e prepare d an d submitte d i n th e remedial desig n report" , therefore , Regulatio n 1 shoul d b e include d i n thi s sectio n a s a n ARAR

. Th e opacit y standard s i n Regulatio n 1 woul d appl y t o thes e activities

. 6 ) Pag e 2-19

. Regulatio n 2

- Regulatio n 2 , odors , i s a n action-specifi c ARA R fo r an y remedia l actio n because remedia l action s canno t creat e odor s tha t ar e i n violation

. Althoug h odor problem s ar e unlikel y fo r thi s remedia l activities , Regulatio n 2 shoul d b e include d a s a n ARAR

. 7 ) Tabl e 2.1

. Pag e 1 o f 3

- T h e NAAQ S ar e ARARs

. A s Colorad o permittin g procedures asses s NAAQ S complianc e fo r mino r sources , th e NAAQ S appl y t o thi s action

. T h e Colorad o standard s fo r TS P an d lead ar e als o ARARs

. Tabl e 2.1

. Pag e 2 o f 3

-A

n APE N mus t b e filed , i t wil l no t b e exempt

. Regulatio n 1 (opacit y an d dust contro l plans ) an d Regulatio n 2 (odors ) ar e als o applicable

. I t i s m y understandin g that , i n orde r t o facilitat e schedul e considerations , you inten d t o finaliz e th e F S a s soo n a s possible

. Nevertheless , th e CDPH E woul d hop e tha t th e EP A put s fort h a concerte d effor t t o addres s thes e issue s i n th e FS

. Th e additiona l ARAR s tha t hav e bee n identifie d coul d b e include d a s par t o f a fina l ARAR s addendu m t o th e FS

. Th e CDPH E wil l expec t tha t EP A als o full y addres s th e above-liste d comment s i n th e Propose d Pla n an d RO D document s fo r OU-9 , rathe r tha n deferrin g institutiona l control issue s t o th e desig n phas e o f the process

. I f yo u hav e an y questions , o r wis h t o discus s thes e matter s further , pleas e don' t hesitat e i n callin g m e a t (303)692-3382

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## \ Rus s Alie n Hazardou s Material s and Wast e Managemen t Divisio n

cc : Tom Hesemann , RM C Vick y Peters , CERCLA-AG O Jan e Mitchell , DCEE D Nancy , Chick , APC D