NCD980602163_19820521_Warren County PCB Landfill_SERB C_Finding of No Significant Impact-OCR

,1£D S7.q,-,3'" e,r, ; ft !, ~ ffl W UNITED STATES ENVIRONMENTAL PROTECTION AGENCY
\ ~
'°1-,,.'ILPJl()"l~e,"-' REGION IV
MAY 211982
34!5 COURTLAND STREET
ATLANTA. GEORGIA 303e!S
FINDING OF NO SIGNIFIC.ANT IMPACT
To All Interested Q)vernment Pigencies and Rlblic Groups:
In accordance with the procedures for implementing the requirements of
the National Ehvironmental Policy k:t, an Ehvironmental Assessment has
been performed on the following proposed EPA action:
APPLICANT:
PROJECT:
PROJECT ~"UMBER:
LCCA'I'ION:
ESTIMATED EPA SHARE:
ESTIMATED STATE SHARE:
ESTI~ATED 'IOTAL :
PROJECT DESCRIPI'ION:
N:>rth carolina Division of Crime
Control & Public Safety
Remedial ktion to Clean up PCB
Contaminated Soils
NC 81-E-4900-5214
Raleigh, North Carolina
$2,568,055
$ 285,339
$2,853,394
The intent of this project is to clean up approximately 40,000 cubic
yards of PCB (polychlorinated biphenyl) contaminated soils located along
the shoulders of 211 miles of North carolina roadways. '!he prof,Osed
reiredial action will accomplish the removal of contaminated soils from
along fifteen segments of highway and the placainent of these soils in a
PCB disposal site in Warren County, N::>rth carolina. 'Ihe disposal site
has been approved by EPA pursuant to the Toxic Substances Control Act
('ISCA), 15 u.s.c. §2601, ~ ~-
The soils will be excavated, transported, and landfilled under tightly
controlled conditions. A sanpling program will be implemented during the
course of the reiooval operation to assure that significantly contaminated
material has been removed. 'Ihe landfill will also be roonitored on a
regular basis.
There is a serious need to dispose of the contaminated soils, since PCBs
are very stable compounds that will remain unchanged in the environment
for an excessive amount of time. Studies using laboratory animals have
shown potential chronic effects such as cancer induction, pigmentation,
and behavioral changes after ingesting PCBs. Accordingly, the reason for
the rerooval of the PCB contaminated soils to a secure landfill is to
prevent the future redistribution of the soils which could increase the
chance of PCB exposure to humans and animals.
Tte c.vironrr.,ental r •eview, based on 4 C CF'R Pa!'.'t l.5 CO, has inc..;.cat2d t.:1at
r;o significant a dverse environrr.e,Ttal 1;npac;:.s will resul-:.:. from t~c
proposed rerredial action. '1112 ac-:.:ion is n.9cessary to protect pc:Olic
haaltll, welfare., and the e nvi:conrri2nt ar.d has been d esigned to miti;ate
a2.l potential haza.::ds associa-::2d w '-t :: t :;e ?C3 cor.ta:11inated creas. P..i r
a.r:d water quality monitcrir.s condt:cted d:.·.:::.r,s a trial run of the soil
rernova.i. prccedu::-es shm,led nc adverse .i..:-:-.;;:,z.c::s. Y.:ecsures t o con c ol
f~gi:.i\1e dust ,2m:.:..:!:,sio~'"!S; ercsion arln s ::2i:',~erYc.a.tic·~~ are exi:ectec to
:riti-;ate pot3nt:al 2.dvers2 irrpc.cts. T:a.11sr 0::tc:::.:.o!i of b e excavated .s,::iil
t o te1e lar1dfill ~:.te :~c.s been :?la:.':.:ied _\.., a.\T,:,id po;.1ulat2:..1 area~,. to
mir.i.m:..ze trc.if ic di,:;ruption, a,,d to safely :;,~nc.le ai;y accidents invol\,ing
haul ·;::cucks. Tne l andfill site wa:3 s2l.:sc-~:2ci. af·:er careful consideration
of r:1..;r:1Ercus ;.::Ote::::tial s it.2s. 'I'h e 2.andfill is cesigned to provide secure
c c;·:1-~c.:_~~rnent of ttc-: contarninat·ed s Jils. Sa.7\?Ting "'v-J ill t;e cunducte=:: to
oe.:ec .: any une)\.pect:ed leachate from the ::.~-:.-:::~il2. and ·co r;-,on:.to.r 'che
s::ou.c:water and su:ciace water c;i.:al:i.-:y at tt2 2. ::.1:-::fill s ite.
'l.:-:e ;,c,:posed act.ion was sele:-::2d ;;:.:te:-c 2.:·2f:.1::. evcluation ,;:= c:ll vic:ole
c::.~,t 2:.:-:1=.tives. Tne action has b eer:. stcwn c:::, :.:·2 ei-:v i.ron:rr:enr:.a.L.y sounc and
c,:~·:. 2i:£ective. ~:'r:erefor:= a dec:.s:on has ':2e:., mace not tc· prepc-,:.:-2 an
:::r:v:...:e:::rr.ental Impacc S~2-::emer.-c (~IS). '::,is c eci sion was :Oased c:-: a
c2:rE'.ul. review of the 3ta-ce i;,re ;area :,:;:s, :\·ar:c2n G::,unty ?CS Wc.ste
:)ispc-.sal Site Engi::eerir.s Design, the reu..1::.c·.::2c1 prosram f :..~2s for :he
:,:ort;; Carolir:a PCB ::pill strip inc:.der:t, t r 2 c.c.:::.;;r::err.::s refe:c:.:-2d to i :r. t:-ie
Er:virc.;.-:;nents.:. .AssessT.ent prepared : y ~?.LS. c :-lei vt~1e:-supportir1s; GQta. .Ul
o: t:-:2se dcc;.:rrne::ts ,. along witb the Envfr(:,r rc2,Tc2.::.. JI.S3essment , c.re o;, :::.le
i:-: the EP.aj Regio~ :v o=f2.cs where :'he~ .. a:-=-c ,;,13.~-~-at•l 1e fo:c put-2..ic scr;__i·c.iny
C:fC~ ::,2-qUest <t P. ... s 2. ccr1venieric2, c. copy c ~ t ~e B-:virorJrlen·~=-,~sessme:1t
::. s a·.:. :2.ched for your: review.
Comrnerycs c::.ncernir.g t;-iis prcJect. nay be 0 ,,rrr,· -·-ec for con:c:..ceration by
EPA. 1.r you wish -C'.) make a con:men t . yo..;, sr..,;J.ld wr ite ~m.cdiat2:i..y to:
US Environmental Pro-::~c~ion l: ;enCJ
Mr . l-.l Ha.t"lke, Project Man:::.s;e r
E..--rner;2ncy & Re:?Trcdial }~.esponsc Br~ch
345 Ccurtlar.d Street, NE
Atlar.ta, Georgia 30 2>65
or t e.",_ephone 404/83.",_-2643.
ENVIRJH1&'ITAL ASSFSSHENT
A. PROJ.OCT IDENTIFICATION
APPLICANT:
PROJECT:
PROJECT NlMBER:
LOCATION:
ESTIMATED EPA SHARE:
ESTIMATID STATE SHARE:
ESTIMATED TOTAL:
B. SUMM2\RY OF ENVlROt-:MENTAL REVIEW
1. Project Description
North Carolina Division of
Crime Cbntrol & f\lblic Safety
Remedial Jlction to Clean up
PCB Contaminated Soils
NC 81-E-49 00-5214
Raleigh, North Carolina .
$2,568,055
$ 285,339
$2,853,394
'Ihe State of t-brth Carolina proposes to remove and dispose of
approximately 40,000 cubic yards of PCB (fOlychlorinated biphenyl)
contaminated soil. 'lhe PCB contaminatea soil is the result of
deliberate discharges of approximately 30, 000-3 5,000 gallons of
liquid waste material from a passing truck onto the roadway shoulders
of North Carolina's highways. 'Ihe discharge of this industrial waste
material containing PCBs has been identified along approximately 211
miles of roadway shoulders located in fourteen central and eastern
piedroont counties of the State, as sho.m in the attached _location map.
'Ihe proposed action involves the mechanical . removal · of the PCB
contaminated soil from the roadway shoulders using road graders and
conveyer systems to load dump trucks which will transport the
material to an api;roved disposal site.
curing the fall of 1978, the State investigated ninety {90) locations
for a possible disposal site to accept the PCB contaminated soil. An
area in Warren County, North Carolina was chosen, by the State as the
best location for the PCB disposal site. In December 1978, North
Carolina submitted an application to the EPA Regional Mministrator
for approval of the landfill under the Toxic Substances Control Act
{TSCA) , 15 U.S.C. §2601, ~ ~· On June 4, 1979, EPA approved the
corx::eptual design of the Warren County site. A 14 2-acre tract which
included the five-acre landfill site was then acquired by the State
in August 1979. 'Ihe final Plans and Specifications for the site were
approved December 14, 1981. ·
Tne landfill will be constructe-c wi t h sajor emp,.31asis on the
protection of surface wate:-atid gr oi..mdw2'cer from potential
cont.arninaticn from the :rr.ateri al bLri.ed i n t ile sit.e. Tne d es i gn
incorporates artificial and cla'/ lin2rs below th_e landfill to prevent
hydraulic connection with groundwate£" a.r.d o r: top of t"oe lar-Lfill t.o
prevent infiltration of .rain and sur::ace water, as shown in t :ie
attached diagra.11.
There will als o be leachate collection syste..-ns installed above ar.d
below t he bottom liner to remove any l eac!1a.te, &7:i this system wi:1..1
be rnoni~ored monthly. There will be grc1.1ndwater monitoring wells
installed arou:-;d the site which will 22 s ai-:-!pled on a monthly basis
during operation or for a period of o~e year, whichever is shorter,
c...l"ld then . se."Tiiannually afte!: closl!re. Surface strean1s located
downgrade from the site will be monitored monthly during operation of
the site and semiannually during the 90s t closure period.
Toe proposed p coject will b e c or.-duc-c.'26 in t 't.10 phases. Tn is approach
v:i ll facilitate the pr0i~t and adeq..1a.t.2 rsc1oval of contarninated soi ls
2nd permit a smooth transition to f i..-=.l closure of the 1 andfill upon
co;rpietion of the project.
?hase I activi ties will include f irializ2tion of the detailed soH
r err.oval plan vh ich will be L-Tif)lei1:en c.e:i us ing one spill strip. Jul
c leanup operations, from pre-s&Tpli:ig to backfilli~g t he r oad
s houlders, will then be c onducted Oi: t hi s strip. Cbnstruction of the
la."'ldfill and access road will also occ.1r ci udng Phase I.
Phase II will consist of cleanup acti vi t :es, from pre-sarrpling to
back£ ill, on the remaini :19 spill strips a nd ~ay run concurrent ly
until all spill strips have been adcres sed . 'Ihe total project is
projected to be completed in f our to t ive months.
2. P..1rpose arid 1\'eed
The purpose of this project is to re:.cve a na d i spose of ap]?rox i..rnate ly
40 1 000 cubic yards of PC:a (polychlorina t ed biphenyl) conta.11inat ed
soils to a s ecure landfill. PolC:-1lorinated biphenyls are highly
stable corrpou.ids that will remain unchar.ged in the environment for a
very long time. PCB will biologically r:.agnify in feed chains and
accumulate in the fatty tissue of boto hrnnans a.id animals. Studies
using laboratory animals have shown potential chronic effects such as
cancer induction, pigmentation, and behavioral changes after
ingestion of PCBs. The PCB contai11ina ted soil could beco:r.-e
translocated into adjacent agr1cultur 2.l cr op lands and may have an
irrpact on agricultural cash crops such as tobacco, feed and forage,
and crops for human consunption.
-2-
The short-terrn uses of th0 pro~ect a::-2
of PCB conta~inated soils alo~s 21.:
t: ansportation of ex::::ava·;:ed :;.:::t.2:::-12.l
rep:resentec. by the e:,cavation
miles of .roadside enc tDe
to tl1e d is:;,osal s i ':e. 'l":1e
disposal si.tc will be decicz..::2c~ -cc -:he l.or.g-t2rm use o:E contaL-iing
the contaminated soils. Cons-:r1..,.c-;:icn of t.he disp.1sal site :.vill
.r,-:sult in an alteration .:,£ ;.:.r;e phys:.cal enviro:1ment, whereas tb.e
excavation of .:oadside wi:l be te:ms;orary 2.r;d will not result i:.1 any
change.
1I'he only long-~er:n envircrut:anta~ loss of t:;e project 'rl ill be t:1e loss
c: ten acres of :;ocentially 2.sricul.':.;ral land. 'This loss is net
C•Jnsidered s i 9,1ific.:mt anc w1::i..l c-e ;nitigated by the beneficial
aspects of the project.
7. A;1y Irreve.rsibj_e and Irret::iev2.c.:..e Co m11itne:1c. o-f. Resources
A)proximately cen acres of ag:-.:cu2.tt2::-::.2. l2Dd wi..ll be :i.ndefin:'..-:.ely
c .Jrr.mitted to contaifl.rr.ent of .:r.2 roadway E:,Jil. cor.tarnina·~ed with ?CB
~-,dustrial waste material. ?2:-r.o~i:'!~ anci aisposal of t:1e PCB
c··.:;ntarninated soil will L-.voj_ve 2. S\.:t::s.:ar.tial commit.-rnent of r2sc:..:rc2s
: ,clt.:ding fin2::1cial exfer..d~:::i.:res io:r :Le.to:-c.nd materials. .lU~::ough
.: 1e labor required to perform ·::-:e pro:::,osej c.C'.:icn is an i rret.rie;.:s.ble
c )mmitment of r2scu.::ces, tene~::ts ::..:1 the form 0£ returnins t he
r Jadway shoulders to ncrm3.l usac;e a:-:d removal of a potent.::.ally
hazardous industrial waste materia.:.. ::rom th2 r oadside will o:i::.::set
t:iis commitment of the necessary lai:Jcr 2.;-1d financial r2sources.
t . SUi-r,mary of Agency Consiceratio!, a,C: :i?ub:i..i c 2nd A:3ency Cnnsul tation
c.. Documents Considered a.nd ?;;.c lic Pacticioati.on :C::ffc;:ts
-:·1e Final EIS entitled 11rte.,11cvc.i. anc .Jisposc.l of Soils C.Ontani::1ated
,., ith PCBs along Highway Sno1_;lce:::-2 i :-: Sort.:1 Ca:ccL.r.a11 pre;.:arcd by t.be
'.: :ate of No.:th carolir.a and t:,e .Acce::C'.u.i'. tc tr:e F:rnal EIS have been
t horoughly r2viewec ai:d conside:-ed a ;-,ci ar2 incorporatc0 by ref2:ence
:'..:1to this Environmental Assessnen-c ('"iP-; • The Draf-:: EIS was
d istributed to government agencies -c :~roe;gh the A-95 Review Pr :-.,cess
.::. 1d to interested persor.s ar;d grm.:ps and announced i!'.1 t he 0br'c.r.
Ca.rolina Environmental Buller.tin issu2d Jar:uary 7, 198:J . The ?:nal
EIS and Addendum to the Final EIS co.1c.ain responses to -~he ccm;-.er:.:.;
c:eceived on the Draft EIS.
'1 :.e follcwing supplemental documents have been reviewed and
c Jnsidered and are incorporated by reterence into the EA:
(1) Toxic Substances Cont:ol Ac:: ('IS2A), 15 U .s.c . .2 6Jl e t s ee.
(1976). Secticn 6 {e) of ':'::CA PX'Ui:-es the .Administrator o i:EPA
to promulgate regulaticns ::er, cu~cng other t::-iings, the d i s ~:osal
of "PCBs."
-12-
(2) PCB Disposal Regulations , 40 CFR Part 7 61. 'lbese
regulations authorize EPA to grant approval for rrse of PCB
disposal sites. Tne regulations were the result of the following
steps. Proposed regulations for marking and disposal of PCBs
were published on May 24, 1977 (42 Federal Register 16 564) •
Also at this time, a support document was made available to the
public containing the basis for the proposed regulations. Four
days of informal hearings were held in Washington, D. c., to
allow for public comments on the proposed regulations. Numerous
written sut:missions to the rule.-uaking docket were also
received. Final regulations were p ubli shed on February 17, 1978
(43 Federal Register 7150, amended , 43 Federal Register 33918,
August 2, 1978). Further amendments were proposed on June 7,
1978 (43 Federal Register 24802) • Ten days of public hearings
were held in Washington, DC, from August 21 to September 1,
1978. On September 22, 1978 (43 Federal Register 43048), EPA
published a notice of the opportunity for cross-exa.'llination and
extended the reply comment period to Cctober 10, 1978. Over two
hundred comments were received. The final regulations were
published on May 31, 1979 (44 Federal Register 31514).
(3) Letter, Governor James B. Hunt, North Carolina, to John c.
White, Regional l-rlministrator, EPA Regi on IV, Cecember 12, 1978,
with attached application. In these documents the State of
North carolina applied for EPA approval pursuant to Ts:::A for the
Warren County waste landfill.
(4) Letter, John c. ~ite, P.egional lministrator, EPA Region
IV, to James B. Hunt, Governor of North Carolina, June 4, 19 79,
with attached Approval Condi tions. I n t his let ter EPA approved
the conceptual design of t he Warren Co unty disposal site as
meeting the requirements of 40 CFR 761.41, with the exception of
three items which were waived in accordance with 40 CFR
761.4l(c) (4). This approval followed a public hearing held in
Warrenton, North carolina, on January 4, 1979, to receive
written comments. Written comments by interested parties wer e
also accepted. Following the hearing, the State was directed to
engage in further soil sa.'Tpling and testing at the site. This
information was submitted to EPA on March 8 and 20, 1979.
(5) Letter, Charles R. Jeter, Regional Mninistrator, EPA
Region IV, to James B. Hunt, Governor of North carolina,
December 14, 1981. Tnis letter gives approval to the plans and
specifications of the Warren County, North Carolina site, as a
PCB waste landfill as authorized by 4 0 CTR Part 761, subject to
attached conditions.
-13-
(6) War ren CoLmtv v. s::.::rce 0~ ~'ior.:l, Caro.:..ina., 528 ?. Su:i;:p. 276
(E.D.N.C. 1981), and SJJ:.:::.-cc, v . S::.ate of r-crth ca:roi1na., 527 F.
Supp. 7 78 (ENDC 1981) ar;a ·c:ie :t ull AdiTiin1strative Rewrd in b oth
cases. In these two CCi..lrt cases, War ren County and several
adjoining property 01.,~r:ers., r espectively, brought suits to
prevent the use of the Warren Ccun·::y site as a disposal site for
the PCB contamina:cea soi::... A .2'~:ieal district ccurc granr.ed
sun:mary j udgrr~nt in totn cases zor tjc State of l'br th carolL~a
and the D'. s. Environmen"C:al .2 rot:ect1m AgencJ.
b. Public Objections to t he Project
Th e most relevant o bjecticns ::o tl,e project concerned the landfill
site seleetion proc2ss ar.d T,.;e.:-;; voi.cea by d1e I<er r -'Iar Areaw::..de
Cl earinghouse Review Cornrnit·::ee a~1d the J ~:.sep, i.ieConte Ch::ipte:c of c. he
S .ierr a Club. ':i:hese groups sul::r.ii t-c.ed wr it. t.en com-r;ents on the or aft
State EIS. .Acaitionally, Dr. Charl2s z•1ulc:hi I a ccr.sultant for warren
C0uI1ty, sutmitted a staterr.e:1t raisir.s .;2vera.i. concerns about toe
project. His comments included ·;:.11e f c,l.2.cw:ng concerns:
(l) the a-nount a nd t.:::,1)€ of clay scil available a t. toe Warren
County site to be u til.:ze-d : n the soi::.. 2. iner c onstruction;
(2) the failure of t he St~te 1 s prcposed design to meet the EPA
5D ft. resulatory requiremt::ni: fc:c proximity to groundwater;
(3 ) tne lack of a leacna~e collE:C~:c ~ 3ystem be~eat~ the burial
site; and
(4) the absence of ti.e r 2qu:.::-ea a ;:-ti:Eicial liner bel ow t he clay
liner.
Tne follcwin<; are resF<)nses to these commer.ts ;:
Concern (1)
A r2sc:npling of the clayey sou s .::t. t he Warren County s.:te
i:xhcate d tnat the t.-pper .six ( 5) fee·::: 0£ soil;:; met o-r exc2edec. ·::he
required parameter for pe:rmeabi:i.ity oased upon sufficient corr.pa c':.ion
of the soil. Th e type of c lay is :.10:: c-:: cor:ce~n as lons as t he E-:,il
wechanics para;..eters are ;net or execeaec. :i:t was again 2stablisr.er:
ti1at there was an adequate vol~.1me of c~::;.y c.va.ilable for the project
located at or i n areas adjacent to the site which would meet the soil
mechanics parameters.
Concern (2)
The require.11ent. that t he bottom c E the waste cell mu s t. b e located
at least 50 ft. from grour.dwate~ was wa.ived. EP A reasonably
-14-
determined that sufficient protection from contamination of the
groundwater -would be provided by the clay liner under · the COAtaminated
soil, the leachate collection systems above and below the liner, and the
10 millimeter plastic liner on top of the site. '!he bottom of the cell
containing the contaminated soils will be at least 10 ft. above the
seasonal high groundwater table. Moreover, groundwater monitoring wells
must be constructed at the site. EPA will verify their locations. 'I'nese
wells will allow periodic testing of groundwater to determine whether
contamination has occurred. '!he State is required to irmnediately report
any detection of PCBs through monitors to EPA.
Concern (3)
EPA denied the State's request for waiver of the leachate
collection system due to the proximity of the bottom of the waste
cell to the groundwater and public concern about possible groundwater
contamination . 'Itle site approval requires leachate collection
systems to be installed both above and below the clay liner.
Concern (4)
The landfill construction requirement that a 30 millimeter
artificial liner be installed atove, below, and along the outside of
t he clay liner was waived. EPA maintains that rainwater i nfiltration
into the landfill would be sufficiently minimized by use of a 10
millimeter plastic liner on top of the site. 'Ihe State will also use
a 30 millimeter liner on the sides and bottom of the landfill.
In addition to the above concerns, numerous comments were received by
mail and at the January 4, 1979, public hearing held on the project.
'These corranents included a recommendati on to leave the contaminated
soils alone, as well as concerns al:out property values, accuracy of
the technical presentation and trustworthiness of State and EPA
officials.
'These and all concerns voiced by the public were taken into
consideration by EPA in evaluating the final project design.
c. Comments Received from State and Federal Agencies
All State agencies with regulatory or review responsibilities were
heavily involved in the drafting of the EIS and in the siting and
aesign of the landfill. Accordingly, there were no formal cornnents
from State agencies on the project.
EPA, acting under the mandate of CER:LA, is the Federal agency
charged with the responsibility for carrying out the herein described
remedial action project. No corrments have been received at this time
from other Federal agencies.
-15-
9. Reasons for Concludir.s There 71-Iil::.. E 2 No significant Impacts
r~orth Carolina and EPA hav2 E:S't2blis:1ed the cleanup of the PG3 1 s
dunped along the highway s ~'1ou2.cers a.s ·t:12 State's highest priority
for action under the Superfu."1d (CERC1.A) program.
The remedial action alte:cnative was sclect:.ed after careful evaluation
of all other a lt~rnatives, ar;a i t will r:ave the least adverse impact
c.:;::on health ar.d the environ.rnent.
2PA 2:nc the St:ate of North Cc.rolir.c have weighed all the concerns
'i'oic2a by the public on ·c:11s proJ ·2<:-:: 1 and in conjunction with
-:..::ehnical and other informa.t.:.c::: submit·.::ea, have reasonably concluded
::.,at t:-:ere wEl be no unreasonable ns:<: c,r irr.pact to health O f t he
=~vi:ror.ma-it. The project wi.:i.l <;reatly benefit the 5 million citizens
c: t~-:e State by minimizing t::2 poter.t :.i;.l :.:or public exposure t o the
::;·Jr.tavnina.ted soil by remcvir.s ::he sc:.::.. t.o a sec:.ire lar.dfill which
':. i.ll be resularly rr.onitored.
-16-
RO ON
~ I \_~I t ....... ~~
LOCATION MAP
IIIUIH PC 8 SPILLS
10 20
SC.at,.,: C# ""LES
30
. -;.,,_. ,. LAMD PHL ~ --Gt\S VrNT I --I Yl.-i-lt '11ll_l[ CF?OSS·-SECTION .....,..........--.--w;-;-,:-;-,:,:-:-:-;~,:•?;T.--. ~-~ \LEACHATE REMOVAL ----. _. . ~ ~W§']f.f(n··i][[Jl·~~~ll]:~:il"':'71·::ir.z::::.· •. · . .-··-"."""z~:. .. , l'bfJ~rrnN , -__;l!.----~~r1 1 , , ~-_ . _ . v~ -rr . . -•. ,,. . ........... -r.-.... . . 1/ ... V.:,::-:':• ::;;·:· :::::.::.:.::.-:·•,:::·~;:__:_.-~· · · · · '""· ~r {, tf r 1¥ ·······•:•.·······•:-0'.s·u ...... -·-. ·.· .. ,._.... ·-• · ·. · r/ J \. :•~::,:.:.:..• "·.· .. f~-v ' . ...._ - -,_.;,ffi ., r .,,r COMPACTED SOIL a PCB MIXTURE ---/" I/ 'V t . ~ ~ ~-~ :_ r , -' ~ \ -\ \ ~~-on,y~-~· • • · • · ·•• .-..• -... -...... v.•.~.•;•-;,;ta.•rl!f·· ·· II z1::?rr-~: ---~-m...,,.,..,.... ....... -y-rrr-n··•:❖=•:•:•=❖:❖=•:•:•=❖:•:.:::::•=:=:•:•:•:•:•=•:•:•:•:•:•:•:•:•:•:❖:•.:=.:•:•=·=·=·=·=·=·=· •• ;: ,·.,!%';, - - -. --,:.; __ :.\:/-i,··.-::. t;_~t\, .. ;_,~_::;.::.::.n·: .. ~;j-n•~:1z· ·z·-~:r1~i::>----== . :l -,. '1,Y/1/ . III£Llllllll liJJl -· JJJ}j __ ,_ NOT TO SCALE . :-._. • • ~·.: • -:;-,· · · • ,r;,-._;r; ·Z· · -~•/:::-:i. · · · ,,;,.;,;~,i:t~•;,.:.,;;~.,,:.?&~~-~ 3/~:JJl~;.~~~,}:f.~6it=rii .. -:~•,rr~\~?~~ili:~l!' y _______ W/ITEn Tfl8LE _ \ I 0 TOP SOIL .. .: ·-LEACHATE COLLECTION SYSTEM @ S ARTIFICIAL LIN ER . PROTECTOI ~ ARTIFICIAL LIN~R El CLAY LINER [@NATURAL EART~I - -ORIGINAL GROUND SURFACE