# illlli l 1161230-R8SDM S
PIN E CANYO N DEVELOPE R GUIDELINE S Futur e Developmen t withi n th e Lincol n Remova l Actio n Are a Introductio n Thes e Develope rGuideline s ar e writte n fo rdevelopers an d homeowners wh o pla n t o develo p o r buil d o n propertytha t ma yhav e bee n impacte d b yhistori cactivitie s relate d t o th e Internationa l Smeltin g & Refinin g Company' s Tooel e Smelte r(IS&R)
. Th e forme rsmelte rpropertyan d Pin e Canyo n residentia l propertie s affecte d b ysmelte r activitie s have bee n remediate d throug h variou s EPAmonitore d action s sinc e 1986
. Specifically , Atlanti cRichfiel d Compan y(Atlanti cRichfield) , unde rth e directio n o fth e U S Environmenta l Protectio n Agency(EPA) , ha s complete d a serie s o fremedia l action s i n Pin e Canyo n wherei n soi l wit h elevate d lead an d arseni cconcentration s wa s remove d fro m residentia l propertie s an d replace d wit h clea n soil
. Environmenta l studie s conducte d i n 2001 - 200 3 byAtlanti cRichfiel d indicat e lea d an d arseni cconcentrations , whic h are abov e acceptabl e residentia l cleanu p levels , ma yexis t i n soil s o n som e undevelope d propertie s i n th e Pin e Canyo n area . I n orde rt o monito rfutur e developmen t i n Pin e Canyo n an d confir m tha t propertie s ar e adequatel yremediated , Tooel e Countyha s create d th e Pin e Canyo n Environmenta l Overlay Zon e (Se e Figure 1)
. Withi n th e OverlayZon e a revie wo fth e environmenta l conditio n an d possibl e remedia l actio n i s require d as par t ofth e developmen t o rbuildin g constructio n approva l process . Applicant s anticipatin g developmen t withi n th e Pin e Canyo n Are a shoul d firs t mee t wit h th e Tooel e CountyPlannin g an d Zonin g Departmen t (TCPZ ) t o determin e i fth e propertyt o b e develope d o rotherwis e improve d i s subject t o th e requirement s o fth e OverlayZone
. Th e initia l reques t shoul d includ e th e followin g information :

• Physica l addres s o rparce l numbe r • Vicinit yMa p • Concep t Ma p showin g planne d developmen t o rconstructio n Th e TCP Z wil l revie wpreviou s samplin g dat a (Se e Figure 2 fo rsamplin g complete d t o dat e i n undevelope d area s i n Pin e Canyon ) t o determin e i fadditiona l samplin g an d remedia l actio n i s required
. Step s fo rcompletin g thi s proces s ar e describe d belo wunde r"Step s t o Completin g Developmen t i n th e OverlayZone. " Thes e guideline s ar e designe d t o assis t with :

• Providin g backgroun d informatio n an d givin g a basi cunderstandin g of th e risks o f lea d an d arseni ci n soi l • Describin g step s require d t o develo p i n th e OverlayZon e • Providin g requirement s an d procedure s fo rcompletin g additiona l samplin g • Selectin g a remedia l constructio n techniqu e fo rcleanu p • Documentin g th e samplin g an d constructio n complete dPin e Canyo n Develope rGuideline s Ma y200 9 

### Backgroun d Informatio n Ho wd o soil s becom e impacted ? I n 1910 , IS& R bega n processin g or e fro m loca l mines
. Metal s processin g continue d a t th e smelte runti l th e earl y1970' s whe n th e smelte rwa s close d an d demolishe d shortl y thereafter
. Th e smelte rproces s produce d fou rtype s o fwast e a s by-products :

• Wast e Roc k

o runprocesse d ore : Wast e roc k consist s o fth e roc k

se t asid e durin g minin g o rminera l processin g tha t di d no t contai n sufficien t amount s o ftarge t metal s t o b e economicall yviable
.
• Tailings : Tailing s ar e create d b ygrindin g min e or e int o san d an d removin g th e metal-bearin g portio n o f tha t sand , calle d concentrate , b ygravity
. Concentrat e i s the n furthe rprocesse d throug h th e smelte rleavin g behin d th e lowe rmeta l conten t tailings
. Sinc e tailing s ha d n o productiv e us e a t IS&R , the ywer e deposite d int o tailing s impoundment s wes t o f th e smelter
.
• Slag : A t IS&R , th e concentrat e wa s conveye d throug h blas t furnace s t o "driv e off " th e sulfu ran d furthe rseparat e th e targe t metal s fro m th e concentrat e leavin g a by produc t wast e know n a s slag
. Th e sla g wast e wa s dispose d o feas t o fth e forme r smelter
.
• Stac k

Emissions : Stac k

emission s consis t o ffinit e particle s discharge d fro m smelte rsmok e stacks
. Wha t ar e th e Healt h Concern s associate d wit h impacte d soils ? Th e primar yenvironmenta l concer n i n Pin e Canyo n i s soi l containin g highe rtha n norma l amount s o f lea d an d arsenic
. I n th e Oquirr h Mountains , lea d an d arseni coccu rnaturall y i n varyin g concentrations , whic h i s th e reaso n fo rit s attractivenes s a s a minin g area . Thes e natura l concentration s generall yd o no t pos e a significan t healt h risk
. Sinc e th e millin g an d smeltin g operatio n i s designe d t o concentrat e lea d an d arsenic , wast e material s o rsoil s impacte d b yth e wast e ma ycontai n highe ramount s o fthes e element s tha n thos e foun d i n th e natura l environment
. Som e studie s conclud e tha t elevate d concentration s o flea d an d arseni cma yaffec t huma n health
. Accordin g t o EP Ahealt h concern s associate d wit h exposur e t o lea d an d arseni car e wholl ydependen t o n ho wmuc h contac t ther e i s wit h affecte d materia l (soil , tailings , etc.)
. Becaus e youn g childre n ar e mor e likel yt o pla yo n th e groun d the y generall yhav e greate rpotentia l exposur e t o lea d an d arseni ci n soi l (inadvertentl y swallowin g soi l b ystickin g thei rfinger s o rothe robject s int o thei rmouths)
. I n comparison , adult s wh o typicall yspen d les s tim e outsid e i n direc t contac t wit h th e soi l an d hav e bette rhygien e habits , hav e les s exposure . Accordingly , cleanu p level s (th e maximu m allowabl e concentratio n o flea d and/o rarseni ci n soil ) establishe d b yth e EP A fo rth e Pin e Canyo n are a ar e base d o n th e potentia l exposur e o fa youn g child
. Th e Agenc yfo rToxi cSubstanc e & Diseas e Registr ystate s describe s th e followin g healt h concern s associate d wit h lea d an d arsenic :Pin e Canyo n Develope rGuideline s Ma y200 9 Lead : Exposur e t o lea d ca n happe n fro m breathin g workplac e ai ro rdust , eatin g contaminate d foods , o rdrinkin g contaminate d water . Childre n ca n b e expose d fro m eatin g lead-base d pain t chip s o rplayin g i n contaminate d soil
. Lea d ca n damag e th e nervou s system , kidneys , an d reproductiv e system . Arsenic : Exposure t o lowe rlevel s ca n caus e nause a an d vomiting , decrease d productio n ofre d an d whit e bloo d cells , abnorma l hear t rhythm , damag e t o bloo d vessels , an d a sensatio n of "pin s an d needles " i n hand s an d feet
. Ingestin g o r breathin g lowlevel s of inorgani carseni cfo ra lon g tim e ca n caus e a darkenin g of th e ski n an d th e appearanc e of smal l "corns " o r"warts " o n th e palms , soles , an d torso . Ho wLan d Us e affect s Clea n u p Level s As state d abov e th e primar ytyp e ofus e ofa n are a an d th e frequenc ywit h whic h peopl e ar e expose d t o it s soils , determin e acceptabl e lea d an d arseni ccleanu p levels
. Th e EPA , afte rcompletin g a Healt h Ris k assessmen t fo rth e IS& R sit e originate d lea d an d arseni ccleanu p level s fo rvariou s lan d us e types . I f lan d us e i s recreationa l o ragricultura l an d smal l childre n are not likel yt o b e regularl y expose d t o th e soil , th e allowabl e cleanu p leve l i s highe rtha n thos e establishe d fo r area s surroundin g home s i n residentia l areas . I n addition , thes e area s ar e normall y covere d wit h crop s o rnativ e grasse s whic h reduc e th e likelihoo d o fdus t migratio n o r' inhalation
. However , whe n a propose d developmen t an d ne wbuildin g change s th e typ e of lan d use , i t i s importan t t o evaluat e th e lea d an d arseni clevel s agains t cleanu p level s establishe d fo rth e propose d futur e use . Thus , whe n a n agricultura l o rope n spac e are a i s develope d int o a residentia l use , action s t o reduc e lea d an d arseni cconcentration s o n th e propertyma

yb e required
. Tabl e o fCleanu p Level s fo rPin e Canyo n Land-Us e Recreation/Ope n Spac e Agricultura l Residentia l (40,00 0 ft ^ surroundin g house ) Averag e Concentratio n (mg/kg ) ^ ' Lea d 2,23 0 2,23 0 58 0 Arseni c 90 0 90 0 10 0

Residentia l cleanu p level s appl yt o th e averag e soi l concentration s o n th e 40,00 0 sf immediatel ysurroundin g a house
. Th e lan d us e typ e (recreation/ope n space , etc. ) woul d the n appl yfo rth e remainin g portion s of th e property . (Se e Figure 3 ) 

### Step s fo r Completin g a Developmen t o rBuildin g withi n th e Overlay Zon e Whe n developin g o rbuildin g withi n th e OverlayZon e th e proces s i s simila rt o th e standard approva l proces s wit h th e additiona l ste p o f workin g wit h th e Tooel e CountyHealt h Departmen t (TCHD ) t o determin e th e environmenta l statu s o f th e property(Se e Figur e 4 an d 5)
. I fth e environmenta l assessmen t complete d o n th e propertydetermine s soi l concentration s o flea d o r arseni cexcee d cleanu p levels , the n a remedia l actio n i s warranted
. Obviously , th e goa l of an yPin e Canyo n Develope rGuideline s Ma y200 9 cleanu p actio n i s t o reduc e th e potentia l exposur e t o human s fro m impacte d soils
. Ther e ar e multipl e method s t o accomplis h this ; sometime s th e mos t effectiv e metho d i s simpl yt o remov e th e impacte d soil
. Othe rtimes , i t i s mor e effectiv e t o plac e a laye ro fclea n material , o ra "cap, " betwee n th e impacte d soil s an d th e people
. A n environmenta l professiona l ca n assis t i n determinin g wha t th e bes t optio n i s fo rindividua l properties
. Informatio n provide d i n th e subsequen t paragraph s describe s th e step s uniqu e t o th e environmenta l aspect s o f th e Overla yZone
. Stepi : Prepar e Concep t Pla n o fth e propose d improvemen t Al l require d drawing s an d document s prepare d b yth e Applican t shal l b e submitte d t o TCP Z wh o wil l distribut e t o th e othe ragencie s a s needed
. T o begi n th e environmenta l approva l proces s th e applican t shoul d prepar e an d submi t t o TCP Z a Concep t Pla n o f th e developmen t o rne wbijildin g showin g wher e th e propert yi s an d wha t th e propose d ' improvement s wil l b e (residential , ope n space , roads , buildings , etc.). ' Th e TCP Z wil l revie wth e plan , confir m tha t i t i s withi n th e Overla yZon e an d wil l discus s wit h th e Applican t wha t Cleanu p Level s appl yfo rth e propose d lan d use . I fth e propose d projec t i s no t withi n th e Overla yZone , TCP Z wil l infor m th e Applican t tha t ther e ar e n o environmenta l revie wrequirement s an d tha t th e projec t ma yprocee d throug h th e standar d approva l process . Ste p 2 : Submi t a Samplin g an d Analysi s Pla n Whe n a propert yt o b e improve d i s withi n th e Overla yZone , a Samplin g an d Analysi s Pla n (SAP ) prepare d b yth e Applican t o rit s consultan t i s required
. Th e purpos e o fth e SA P i s t o defin e a pla n o f ho wa n environmenta l assessmen t wil l evaluat e th e curren t environmenta l conditio n o f th e propert yrelativ e t o establishe d Cleanu p Levels
. Th e TCH D wil l the n revie wth e SA P t o evaluat e samplin g design , samplin g methods , sampl e handlin g an d dat a qualit yobjectives
. Samplin g ma ybegi n onc e authorizatio n t o mov e forwar d i s obtaine d fro m th e TCHD
. Th e pla n shoul d includ e th e intende d Scop e o f Wor k an d detail s o n ho wi t wil l b e accomplished
. Soi l analysi s fo rlea d an d arseni c shoul d b e performe d b yXR F wit h a minimu m 5 % Qualit yAssuranc e duplicat e sample s analyze d b yIC P method s o ra s otherwis e approve d b yTCHD
. A t a minimum , th e samplin g frequenc ydefine d i n th e SA P shal l includ e on e 5-poin t composit e fo reac h 40,00 0 sq f t are a (200 ' X 200 ' grid ) o rfo reac h planne d o rexistin g lo t withi n a subdivision , whicheve ri s less
. Collec t on e composit e sampl e an d analyz e fo rdepth s representin g 0-6" , 6"-12 " an d 12"-18"
. Remedia l Objective s an d Acceptanc e Criteria : Th e minimu m criterio n fo racceptanc e o fa propert yt o procee d toward s developmen t is : Th e are a averag e fo ran ygive n residentia l buildin g pa d an d th e adjacen t 40,00 0 s q f t (residentia l portion ) o fa planne d o ra n existin g subdivide d lo t a s determine d b yth e composit e sample s shal l no t excee d th e Cleanu p Leve l o f58 0 pp m lea d o r10 0 pp m arsenic
. I n addition , n o on e sampl e withi n th e residentia l are a shal l excee d 90 0 pp m lea d o r15 0 pp m arsenic
. Evaluatio n ofth e minimu m criteri a shal l b e applie d a t eac h o fth e thre e samplin g depths
.Pin e Canyo n Develope rGuideline s Ma y200 9 Th e are a averag e outsid e th e residentia l portio n of eac h planne d o rexistin g subdivide d lot a s determine d b yth e composit e sample s shal l no t excee d th e Cleanu p Level s o f 2,23 0 pp m lea d an d 90 0 pp m arsenic
. I n addition , n o on e sampl e shal l excee d 14,85 0 pp m lea d o r4,54 5 pp m arsenic
. Evaluatio n ofth e minimu m criteri a shal l b e applie d a t eac h ofth e thre e samplin g depths
. Ste p 3 : Submi t Samplin g Result s an d Remedia l Pla n Afte rcompletio n of fiel d sampling , th e Applican t prepare s an d submit s a summar yo fal l samplin g complete d an d associate d analytica l results
. I fsamplin g indicate s tha t lea d and/o rarseni cconcentration s ar e belo wCleanu p Levels , th e Applican t wil l the n procee d byworkin g wit h TCP Z throug h th e standard approva l process . I f th e fiel d samplin g indicate s soi l concentratio n level s o flea d and/o rarseni car e abov e establishe d Cleanu p Levels , th e Applican t wil l prepar e a Remedia l Wor k Pla n (RWP)
. Prepar e th e RW P i n accordanc e wit h th e Tabl e o f Content s show n belo wan d submi t t o TCP Z fo rapprova l prio rt o implementation
. (Possibl e methodologie s ma yinclud e thos e describe d belo wunde r"Remedia l Construction.") : RW P Tabl e of Contents : I
. Purpos e an d Objective s of Remedia l Wor k Pla n II
. Discussio n o fInvestigatio n Finding s

. a . dat a summar

y b
. area l exten t ma p III
. Role s an d Responsibilitie s IV
. Remedia l Constructio n Method s an d Procedure s

• propose d remedial.method s • quantitie s • propose d surfac e gradin g an d restoratio n • depositio n ofimpacte d soi l • qualityassuranc e V
. Sit e Specifi cHealt h an d SafetyPla n VI
. Remedia l Constructio n Schedul e VII
. Pos t Constructio n Confirmatio n o f Remedia l Objective s Th e RW P wil l b e reviewe d fo rcompletenes s an d t o insure tha t th e propose d pla n addresse s th e ful l exten t ofth e impacte d soi l an d adequatel yaddresse s community healt h an d safetyissues
. Fina l approva l b yTCH D i s base d o n meetin g performanc e criteria , no t specifi cmethodologies
. Allo wTCH D ma yapprov e certai n methodologie s i n th e RWP , th e Applican t i s full yresponsibl e fo rmeetin g cleanu p requirements
. Ste p 3 : Remedia l Constructio n Afte rrevie wan d authorizatio n t o proceed , th e cleanu p remedia l constructio n action s ma ybegin
. Describe d belo ware thre e possibl e cleanu p techniques
. Th e firs t techniqu e involve s complet e remova l of impacte d soi l fro m th e property . Th e remainin g tw o technique s us e a combinatio n of method s t o minimiz e th e potentia l o f huma n exposure . Techniqu e 1 : Removin g th e Impacte d Soi lPin e Canyo n Develope rGuideline s Ma y200 9 Usin g thi s technique , al l impacte d soi l i s excavate d fro m th e propertyan d transporte d t o a landfill , o rothe rapprove d are a fo rpermanen t disposal
. Atlanti c Richfiel d ha s se t asid e a portio n of it s propertyfo rdisposa l of smelte rimpacte d soi l tha t exceed s cleanu p levels
. Removin g al l impacte d soi l i s th e sures t wa yfo r th e TCH D t o determin e you rpropertyi s clean , thereb yallowin g unrestricte d us e i n th e future
. Removin g impacte d soi l fro m a propertyrequire s th e most upfron t costs ; however , i t wil l not require long-ter m operatio n an d maintenanc e o r impos e lan d us e restrictions
. Soi l i s t o b e remove d usin g environmenta l saf e method s tha t reduc e dus t an d protect communityresident s fro m physica l an d environmenta l hazards
. N o specifi cdept h i s require d durin g removal ; however , confirmatio n samplin g need s t o confir m tha t remedia l object s have bee n met . Followin g removal , plan t are a wit h nativ e gras s o rothe racceptabl e vegetativ e cove rtha t prevent s migratio n o f windblow n dust
. Techniqu e 2 : Partia l Remova l Usin g th e partia l remova l technique , impacte d soil s ar e remove d fro m variou s portion s o f a larg e property(i.e
. residentia l portion ) an d eithe rtransporte d t o th e Atlanti cRichfiel d repositor yo rsprea d ont o ope n spac e area s withi n th e property tha t have highe racceptabl e cleanu p levels
. Curren t an d subsequen t property owners ar e responsibl e fo rmaintainin g th e ope n spac e i n perpetuityo rcleanu p th e propertyt o a highe rlan d us e standard a s neede d t o preven t huma n exposure . Usin g thes e sam e concepts , greenbelt s ca n b e create d bymovin g residentia l soil s t o open , spac e area s o n a subdivisio n wid e basi s providin g a varietyof amenities , suc h a s attractiv e views , ope n spac e preservation , an d convenien t recreatio n opportunities
. Becaus e th e EPAallow s ope n spac e area s t o contai n highe rlevel s oflea d an d arsenic , impacte d soi l ca n b e permanentl ylef t a s lon g a s ther e i s a minimu m cove rof gras s o rothe rcoverag e a s approve d b yTCHD
. Techniqu e 3 : Usin g th e Impacte d Soi l a s Backfil l Whe n usin g thi s technique , som e impacte d soil s ma yb e use d a s backfil l i n utility trenches , o runde rhardscap e feature s suc h a s asphal t roads
. Whe n thi s techniqu e i s used , th e impacte d soi l must b e covere d wit h a minimu m of 18 " of clea n soil , concrete , asphal t o rothe rsurfacin g t o minimiz e th e ris k of huma n exposure . Curren t an d subsequen t propertyowners are responsibl e fo r maintainin g th e protectiv e surfacin g i n perpetuity
. Whe n covere d wit h a protectiv e surfacing , thi s metho d provide s effectiv e protectio n fro m lea d an d arseni cexposure , whil e minimizin g cleanu p costs . Usin g th e impacte d soi l a s backfil l materia l eliminate s haulin g an d disposa l costs , a s wel l a s cost s t o purchas e an d hau l clea n backfill
. Us e o f thi s metho d require s th e approva l o f th e desig n an d institutiona l control s directe d b yth e TCHD
.Pin e Canyo n Develope rGuideline s May200 9
Ste p 4 : Submi t Fina l Repor t Upo n completio n o fth e remedia l work , submi t fo rapprova l a fina l repor t prepare d b

yan d certifie d b

ya professiona l enginee rfo rapproval
. Includ e i n th e repor t a summar

yo f remedia l constructio n an d al l confirmatio n sampling
. Confirmatio n samplin g mus t certify tha t remedia l constructio n wa s complete d accordin g t o th e RW P an d tha t remedia l objective s hav e bee n met . Figure s showin g sampl e location s an d area s addresse d by remedia l actions ; table s wit h analytica l results ; constructio n quantitie s an d a narrativ e o f action s take n shoul d al l b e include d i n th e report . Ste p 5 : Procee d wit h Developmen t Approva l Onc e th e TCH D approve s th e fina l report , TCH D wil l provid e a lette rt o TCP Z statin g tha t remedia l objective s hav e bee n met an d n o futur e environmenta l actio n i s necessar yfo r th e intende d use . Fina l approva l fo rth e project wil l b e give n b yTCP Z afte ral l othe r requirement s are me t

# Tooel e Count y Land Use Ordinance Septembe r22,200 9 Additio no f Chapter 2 9 - Pin e Canyo nOverla

y Zone . Ordinanc e 2009-2 5 PIN E CANYO N ENVIRONMENTA L OVERLA Y ZON E Sectio n 29-1 . Purpose . 29-2 . Boundary . 29-3 . Definitions . 29-4 ; Application . 29-1 . Purpose . Th e purpos e of

thi s chapter

i s t o monito r

futur e developmen i i

nthe Pin e Canyo nare aandconfir mtha t propertie s are adequatel y remediated . Environmental studie s conducte di

n2201-200 3 under

th e directio no f th e U S Environmental Protectio nAgenc y andthe Uta h Department

o f Environmental Qualit

y hav e indicate da potential fo

r soil s i nthi s are ato contai nelevate d concentration s o f

lea dandarsenic , abov e acceptabl e residential cleanu p levels , onsome undevelope d properties . 29-2 . Boundary . Th e overla

y boundar y include s propertie s withinth e Pin e Canyo nTownshi p a s identifie do nth e Pin e Canyo nEnvironmental Overlay Zone Ma p o hfile wit h the Tooel e Count

y Healt hDepartment

an dthe Division o f Plannin g andZoning . 29-3 . Definitions . "Developmen t

action " mean s an

y man-made chang e t o rea l estate , including , bu

t not limite dto , the constructio no f

building s or

othe r structure s requirin g a permit , landuse s requirin g landus e authorit y approval , subdividing , mining , dredging , filling, grading , paving , excavatio nor

drilling . 29-4 . Application . Withinthe overla

y zon e arevie w o f

environmental condition s andpossibl e remedial actio ni s require das par t o f an y developmen t

action . Confirmatio no f sulTicien t remedia l action , fo

r th e intende duse , shall b e require dfro

mthe Tooel e Count

y Healt hDepartment prio r to proceedin g wit

hadevelopmen t

action . A property owner/develope r shall b e require dto submi t a Samplin g andAnalysi s Pla naccordin g to Development Guideline s adopte db

y andonfile wit

hthe Tooel e Count y Healt hDepartment

prio r to conductin g an

y samplin g o f

th e property . Th e owner/developer mus t submi t aRemedial Wor

k Pla na s describe di

nth e Guideline s prio r

t o performin g remedia

l work .

TOOEL ECOUNT Y LAN D US EORDINANC

E- CHAPTE

R2 9