~

421 l

EBASCO 11E1MCES INCORPORATED 211 CongNa sert 8lh Floor Bolton MA 021102410 (617)451-1201

llr Edward Hathaway US Znviro_ntal Protection Agercy Waate llana9-nt Diviaion JPK Federal Buildinq HPS-CAN 2 aoton IIA 02203-2211

Subject ARCS I-BPA CONTRACT NO 68W90034 WOJU( ASSIGIIIIKHT NO Ol-1P39 OLD SPRINGPIBLD LAliDPILL PPS

May 2 1990 ARCS I 90-159

OYDBIGIIT DllAPT SPLIT IWIPLB DATA COICPltJtiSON

Dear llr Hathaway

lttta- pl- find a draft -ry -riiiOft of the ruulta of -middotbull aplit -le field oveni9ht PrltI91Umiddot Pollowinv OGIIpletion of the data validation effort a reviS bull~ry will be -itted to the Aqency

zmiddot1~IAvia 11 HorzbullJIPlaquo Site Jlanager

Ulllnh

FILE ARCS PM 1 1

AJTACHMENT I

10 INTBODUCJ]ON

The reaults of chemicaJ analysea of lhe split sample~~ coUected during Ebucos ovenipt of

the Old Sprinafield site FFS field prosram have been compiled and the results compared to aample

reoulll reported by Remcor Split samples were collected by Ebuco over he duration of the fidd

proaram from A 1989 to February 1990 In certain buu_ he oplit oamp1inc prOIJUil

wbldt wu ultimately implemented deviated lliampJitly from he oninally propooed procram u

preaented in Ebucoa FOP In particular ~ water iplit sampleamp ooukt not be ooUectcd u

Remcor performed thil portioo of he field proaram before Ebucoo oveniafit proaram bad

formally- In additioo at he requeat of the EPA RPM more ]IIOWldwater oplllllmpla

-- colleckd thao oninally proposed

llllbould be DOted that in he dnft- focuoed feuibility1111dy (FFS)-~

dall baabeatllllllllllrizedaod -ted in a number of dilferent alplla a formatl ltJriaina1 cbeaticol dall-u- from he lahonlory (Form ra) have not--- Thio baa

ooatplicated tho data - aod required in many -- Remcor data 10 be J nviled- tho manner in wbldt it ia -ted in tho FFS rnport In addition in many_

-middotllllllllllrized data baa inoplied but not opecilicolly llated delectioo Umita for shy

poniadarty- they- not- detected In he followina- data comparioonlbaoe

-gt -ted on he buia of bolth llmpie matrix type aod ~ COOIitueot type

20 SPin SAMPJI ovoc

Ebuco aplit aamplea were coUccted in accordance with the protocols identified in Ebucoa

Field Openliooa Plan All Ebuoo oplit umplea were anal)zed at desipated EPA bull CLP

laboratories Durinc he field oamplinc elort QAQCsamples indudinJirip blanks field blanks

and duplicate~ were collected u delcribed in Ebucos FOP

30 C)lfMICAJ DATA COMPARISON

31 Teat PM Sol tpd Gmpndwalcr Split Sample Cowprison

The reaults of volatile orpnic anaJyaea for soil and water split samplea collected from

Western Ravine test pit 3 are presented in Table 3middot1 The results of analyses or Ebucos soil

sample lplits indicate the presence or trace levels or methylene chloride and adone both of which

are amunon laboracory ooncaminantl u indicated by their presence in usociaced laboratory blanb

Allo decected were trace levela of toluene (3 ppb) oourrina at concentratiou below required

detectioa limits Remcor did noc report the presence of any volatile orpnics in ica corresponding

aaamp~e

Ill a IJOUDltIwater otpllt aample collocted from the bottom of the aame teat pit oo alatile

orpnica _ dotectod ia eithec Reaxora aample oc in Ebucoa tpllt aample

32 Slw Serttm Spll SpUf Swplc

The - of w- of a IAidace a aamp1e otpllt collocted 1rom the w- Slope

(loww ma- 114) are preaeated ia Tabla 3-2 3-3 3-4 aad 3-5 A--ohalatie

orpttio _wta (Table 3-l) iadicatea the abaeace ofdoteaable -tile orpnica itt bocb the_ _aad_ Aa iadicated ia Table 3-3 the Remcor noulu iadicatc that oo a orpnica _

detected The - oplit aample reoulta are aenerally coaaiotent with the Remcoc noulu but do

iadicatcthe ~ pr-ce 011 trace levcla o ceruinpolyqdic aromatichydrocarbooa(PAHa)

lbeae iadude pbenanthrene (120 ppb) Ouoranthene (230 ppb) aad pyrene (240 ppb) AU of theae

PAHa were reported preoent at levels below the required detection limit The - of theae

PAHa mipt be related paat deposition and erosion o upbalt related materials from the upper

end of the ravine

The Ebuco split ample resulcs also indicaced the posstble presence of trace lcvels of PCB

arodor 1260 at decection limit levels (88 ppb) u well u the possible presence of trace reaidues

of the pesticide DDT at levels below the required decection limit The Remcor results did not

indicate the presence of trace PCB Ieveli Pesticides were not analyzed by Remcor

The results of metals analyses for the respective samples are presented in Table 3-5 A

comparison of the results shows generally good aareement between the Remcor sample and the

Ebuco aplit sample with the possible exception of cobalt In this cue the Remcor result (140

makg)is somewhat eJevated and higher than the value reported in the Ebuco split sample (147

ppm) Other results for both samples are relatively consistent and do not show evidence of

tJsnificant metals contamination

33 Syhmrftq SgJI Bodgg Split $ampla

A oeria ol oubourlace soil boring oplit samplawere oolloclted and analyzed by Ebuoo The

results of these analyla are presented in Tables 3-6 3middot7 3-8 and 3-9

The reoulll of volatile orpnic oompound analylea (VOC) lor oubourfoce ooil tplit aamplea

are pre1111ted iD Table 3-6 ~ is indicted the concentrations of certain volatile orpnicl iD the

Bbuco optit sample rom boring MW-39-S (18-20 loet) -ely hiah aod required tample

dilutioo aod reaaalyliL Preaeot in hiah lrationl were 12-dicbloroethene (lOCal) (23000

ppb) aod tridiJoroelheoe (110000 ppb) Low leYeb of other volatile orpnica including

- -e (II ppb) letrachloroethe (370 ppb) aod lllmiddottricbloroethaoe (15 ppb) wue aloo

- - a1oo reported hiah 12-dicbloltootheoe (~ ppb~ aod - (1900 ppb) lrationl in the sample althoup _ conoeolrltionl were oubotantially lower t1w1 the

valuel reported in the Bbuco optit oample dilution analysia Due to eleYated detection linUu

Remcor did not report detectable oonceolrationl ol any other VOC The dilcrepancy beiWeen

the Ebuo and Remcor 12-dichloroethene and tricbloroethene results miampht be due to

concentratiool which could have exceeded the calibration ranee for the Remcor sample

For IUblurfacesoil sample MW-38-S (8-10 feet) good aareement wu oblervedbetween the

Ebuco iplit sample and the Remcot sample In both samples aeveral BTX compounds were

detected including toluene (Ebuoo 16000 ppb Remcor 20000 ppb~ ll)lene (Ebasco 55000 ppb

Remoor 75000 ppb) and ethylbenzene (Ebuco 11000 ppb Remoor 13000 ppb)

5plit aamplea were also coUected from soil boring RTIHJ5 at IWO depths (6-3 leet and 20shy

22 feet) At the shallower 6-8 foot depth both the Ebuco split sample and the Remcor aample

indicated the presence of low levels of BTX compounds The compounds detected included

) chlorobeozcne (Ebasoo 170 ppb Remoor ~ ppb) ethyl benzene (Ebuco 170 ppb Remoor 18

ppb) and llylene (Ebasco 52 ppb Remcor 25 ppb) Trace Ieveii of carbon disulfide (Ebasco

4 ppb Remcor 8 ppb) were also detected No BTX compounds were detected in either sample

from the 2022 foot depth

Semivolatile orpnics were also analyzed in the tamples collected ampom RTB-05 In neither

the lll1lple collected from 6-8 feet nor the sample oollected from 20-22 feet did the Remcor

reaulll indicate any semivolatiles detected with the eweption of bis (2-ethylbellylpbtballte (7~

ppb) in the lballowcc ample Ibis wu abo oboetved in the Ebuco wnpJe (~ ppb) Abo

oblerwd in the Ebuco wnplewere trooe Ieveii of -1PARI iDcludiq naphthalene (380 ppb~

2-methylnapbtbalene (190 ppb) and pbeoanthreoe (250 ppb)

Peoticideo DOl analyzed by Remcor in the two R~ lOll oampleo and wae DOl

detected in the llluco oplilllmplel Low Ieveii of the PCB ltOdor 1254 (Ebuco ~ ppb

Remcor 4000 ppb) wae detected in the lballow H r- llllllple The raulll of -Ia _

fnxD the - ooil barioa oplil oampleo are~ iD Table 3-9 Ao ia iDdicoted in Table

3-9 ooil ~-tiDeaare variable iD the Ebucoand Remcoroplil fnxD

barioa MWmiddot31-S ~ Ieveii of- -Ia itgtcludiq-- (Ebuco 87 ppm RaDoor

170 -~- (Ebuco 201ppm Remcor 120 ppm) are ted_ ~ COllloltliDation iD addition reported COIICOIItntiDea for lead (470 ppa) in the llluco

wnpJe are oipificantlyhiPlaquo than the Y1111101 reported for the Remcor wnpJe In the oplit wnpJe

from MW-39-S (18-22 feet) both the Remcor andEbuco oampleo indicate eleooted tntiDea

of-metab includina lead (Ebuco 1270 ppm Remcor 1300 ppm~ nidtel (Ebuco 413 ppm

Remcor 220 ppm) and vanadium (Ebuco 98 ppm Remcor 65 ppm) and zinc (Ebuco 4430 ppm

Remoor 2700 ppm) and 11r0naJyougest the pr ofsianificant~contamination in the aoiL

Foe -1-Ja indudinc chromium cobalt and zinc sianificanl difterencoo can be oblerwd in

the cooeeotratioos in the middotEbuoo and Remcor samples The ~ for thae variltiona are

unclear but miampht in pan reflect inhomoaeneities in the JOil materials resulting from the presence

of dilcrete metal particles

Concentrationsof metals in Ebasco and Remcor samples from both soil splitscoUected from

boring RTB-5 (6-8 feet and 18-22 feet show generaUy good agreement This appears to be due

-I

at least in part to overall lower metal concentrations than are observed in the MWmiddot38S and

MW-239-S aamples

34 JbullHmbull WcU Sempla

The raulu of oplit wnple analyses of resideotial well aamplea are presented in Tobia 3-10

and 3-11

Volatlle orpnilt analyses of oplir wnples colleded from lbe Mumford and Bood uoideoces

obow _ny pgtd -L No VOC wwe delecled in lbe Ebuco oplit IIDiplo from lbe

Mumford noldeace with lbe of rraoe levela of ~ chloride wtUcb wu lloo

delecled lo lbe llboratory blaak n-- lewb of - VOC were -eel in lbe Bood - -middot-_to be labararoryCCgtrllolllirlaaond were in-shy(__chloride and dllororonn) allo in lbe laboratory blaak

- oltraoe- analyses for lbe -wu_t lo Tillie 3-11 _lbo_and_ _ ___low-1-alooolo

-from belh lbo Mumford and Bood -_ No-of MOJo lor_ ue

- AaJ-1- oplit oomplo- _uy aoodshy

35 Melterler WciJ Stilt Seweln

The rau1u of oplit wnp1e analyses of IJOWIIwater oarnpleo are preoenred in Tobia 3-12

3-13 3-14 and 3-15

The rau1u of oplit oomplo analyses for Utlle orpnico (VOC) pramled lo Tillie

3-12 Overall nlaMiypgtd -riooboerved- oplir llmpletcollecled by- and

Rernoor porticularly in oplill colleded from MW-14 MW-290 and MW~B In oplit llmplet

MW-32 and MW~B certain BTX onmpoundo induclina benzeoe andor toluene were delected

in lbe Ebuco oplit wnp1e bur were below delection limill reported by Rernoor

h evidenced from lbe dar very hiah concenlnltionl of certain chlorinlred VOC -bull

oblerved in both the Ebuoo tplit sample and the Remcor aample from MWmiddot39S Generally aood

( aareernent is observed between split sample concentrations or 12 dichlorethene (Ebasco 6500 ppb

Remcor 5500 ppb) 1richloroelhene (Ebasco 5900 ppb Remcor 7300 ppb) tetrachloroethene

(Ebasco S80 ppb Remcor 720 ppb) and vinyl chloride (Ebasco 560 ppb Remcor 920 ppb)

Finally it should be noted that Remcor did not report data Cor a number of aroundwater

aample aplill collected in February 1990

The raulca of aplit ample comparisons or aemivolatile analylca or arourKtwater aamplea are

presented in Table 3-13 No aemivolatile compounds were detected in either the Ebuco or

Rancor aamples from MW-465 In the aample from MW-325 law Ieveii of

4-lthloro-3-melhytplgteool- decected in both the Ebaaco (79 ppb) aad Rancor (47 ppb) u wu

I 4-didllorobeaze (Ebaaco 16 ppb Rancor 12 ppb) In addition in the Eboaco aplil ample

law Ieveii of 4-melbylpbenol (16 ppb~ aapblhalene (46 ppb) aad 2-melhylaaplolhalene (23 ppb)

aad J ocher PAJh _ a1ao decected in the ample Theae compouoda _ DOl decected

in the Rancor ample

Tbe naulb of Ebaaco tplil ample ana1yaa of PCBa -lhallllce Ieveii of PCBa (leal

lhae or equoloo 10 ppb) may be _ 11 or below required deleclioe 1imila ill the aamplea

from both MW-325 aad MW-465 PCBa no1 howevw delecled ill the Rancor IOIIIIpiea Tbe

Ebaaco aplil ample raulll are bullnderaoina urther rmew

Tbe raulll of aplilaample IIJOUndwaler mell1s ana1yaa comparioonaare -oed in Table

3-14 Agt ia indicaoed both fillered and unfillered apUI samples were analyzed Splil oample

analyaes foe both fillered and unfillered ana1yaa show generally pgtd aiiJeemenl The OyenenJ1

reaulca indicate peralJy low filtered and unfiltered metal concentrations in goundwater aamplcs

from wdla MW-14 MW-29D MW-40B MW-41B and MW-4SB with melal coocenlrltiona 1aradY below MCIs Elevated concentrations of certain metals are however observed in both filtered

and unfiltered lplit samples from MW-39S In particular concentrations of cobalt (Ebuco 1090

ppb Remcor 920 ppb) are unusuaDy high even in filtered samples The overall resulta for MWshy

39S sugest the pusence of aorne metals contamination

Finally u previously noted metals results for certain split sarnplcsooUected during February

1990 were not reported by Remcor

LOshy

-~-

AJTACHMENT I

10 INTBODUCJ]ON

The reaults of chemicaJ analysea of lhe split sample~~ coUected during Ebucos ovenipt of

the Old Sprinafield site FFS field prosram have been compiled and the results compared to aample

reoulll reported by Remcor Split samples were collected by Ebuco over he duration of the fidd

proaram from A 1989 to February 1990 In certain buu_ he oplit oamp1inc prOIJUil

wbldt wu ultimately implemented deviated lliampJitly from he oninally propooed procram u

preaented in Ebucoa FOP In particular ~ water iplit sampleamp ooukt not be ooUectcd u

Remcor performed thil portioo of he field proaram before Ebucoo oveniafit proaram bad

formally- In additioo at he requeat of the EPA RPM more ]IIOWldwater oplllllmpla

-- colleckd thao oninally proposed

llllbould be DOted that in he dnft- focuoed feuibility1111dy (FFS)-~

dall baabeatllllllllllrizedaod -ted in a number of dilferent alplla a formatl ltJriaina1 cbeaticol dall-u- from he lahonlory (Form ra) have not--- Thio baa

ooatplicated tho data - aod required in many -- Remcor data 10 be J nviled- tho manner in wbldt it ia -ted in tho FFS rnport In addition in many_

-middotllllllllllrized data baa inoplied but not opecilicolly llated delectioo Umita for shy

poniadarty- they- not- detected In he followina- data comparioonlbaoe

-gt -ted on he buia of bolth llmpie matrix type aod ~ COOIitueot type

20 SPin SAMPJI ovoc

Ebuco aplit aamplea were coUccted in accordance with the protocols identified in Ebucoa

Field Openliooa Plan All Ebuoo oplit umplea were anal)zed at desipated EPA bull CLP

laboratories Durinc he field oamplinc elort QAQCsamples indudinJirip blanks field blanks

and duplicate~ were collected u delcribed in Ebucos FOP

30 C)lfMICAJ DATA COMPARISON

31 Teat PM Sol tpd Gmpndwalcr Split Sample Cowprison

The reaults of volatile orpnic anaJyaea for soil and water split samplea collected from

Western Ravine test pit 3 are presented in Table 3middot1 The results of analyses or Ebucos soil

sample lplits indicate the presence or trace levels or methylene chloride and adone both of which

are amunon laboracory ooncaminantl u indicated by their presence in usociaced laboratory blanb

Allo decected were trace levela of toluene (3 ppb) oourrina at concentratiou below required

detectioa limits Remcor did noc report the presence of any volatile orpnics in ica corresponding

aaamp~e

Ill a IJOUDltIwater otpllt aample collocted from the bottom of the aame teat pit oo alatile

orpnica _ dotectod ia eithec Reaxora aample oc in Ebucoa tpllt aample

32 Slw Serttm Spll SpUf Swplc

The - of w- of a IAidace a aamp1e otpllt collocted 1rom the w- Slope

(loww ma- 114) are preaeated ia Tabla 3-2 3-3 3-4 aad 3-5 A--ohalatie

orpttio _wta (Table 3-l) iadicatea the abaeace ofdoteaable -tile orpnica itt bocb the_ _aad_ Aa iadicated ia Table 3-3 the Remcor noulu iadicatc that oo a orpnica _

detected The - oplit aample reoulta are aenerally coaaiotent with the Remcoc noulu but do

iadicatcthe ~ pr-ce 011 trace levcla o ceruinpolyqdic aromatichydrocarbooa(PAHa)

lbeae iadude pbenanthrene (120 ppb) Ouoranthene (230 ppb) aad pyrene (240 ppb) AU of theae

PAHa were reported preoent at levels below the required detection limit The - of theae

PAHa mipt be related paat deposition and erosion o upbalt related materials from the upper

end of the ravine

The Ebuco split ample resulcs also indicaced the posstble presence of trace lcvels of PCB

arodor 1260 at decection limit levels (88 ppb) u well u the possible presence of trace reaidues

of the pesticide DDT at levels below the required decection limit The Remcor results did not

indicate the presence of trace PCB Ieveli Pesticides were not analyzed by Remcor

The results of metals analyses for the respective samples are presented in Table 3-5 A

comparison of the results shows generally good aareement between the Remcor sample and the

Ebuco aplit sample with the possible exception of cobalt In this cue the Remcor result (140

makg)is somewhat eJevated and higher than the value reported in the Ebuco split sample (147

ppm) Other results for both samples are relatively consistent and do not show evidence of

tJsnificant metals contamination

33 Syhmrftq SgJI Bodgg Split $ampla

A oeria ol oubourlace soil boring oplit samplawere oolloclted and analyzed by Ebuoo The

results of these analyla are presented in Tables 3-6 3middot7 3-8 and 3-9

The reoulll of volatile orpnic oompound analylea (VOC) lor oubourfoce ooil tplit aamplea

are pre1111ted iD Table 3-6 ~ is indicted the concentrations of certain volatile orpnicl iD the

Bbuco optit sample rom boring MW-39-S (18-20 loet) -ely hiah aod required tample

dilutioo aod reaaalyliL Preaeot in hiah lrationl were 12-dicbloroethene (lOCal) (23000

ppb) aod tridiJoroelheoe (110000 ppb) Low leYeb of other volatile orpnica including

- -e (II ppb) letrachloroethe (370 ppb) aod lllmiddottricbloroethaoe (15 ppb) wue aloo

- - a1oo reported hiah 12-dicbloltootheoe (~ ppb~ aod - (1900 ppb) lrationl in the sample althoup _ conoeolrltionl were oubotantially lower t1w1 the

valuel reported in the Bbuco optit oample dilution analysia Due to eleYated detection linUu

Remcor did not report detectable oonceolrationl ol any other VOC The dilcrepancy beiWeen

the Ebuo and Remcor 12-dichloroethene and tricbloroethene results miampht be due to

concentratiool which could have exceeded the calibration ranee for the Remcor sample

For IUblurfacesoil sample MW-38-S (8-10 feet) good aareement wu oblervedbetween the

Ebuco iplit sample and the Remcot sample In both samples aeveral BTX compounds were

detected including toluene (Ebuoo 16000 ppb Remcor 20000 ppb~ ll)lene (Ebasco 55000 ppb

Remoor 75000 ppb) and ethylbenzene (Ebuco 11000 ppb Remoor 13000 ppb)

5plit aamplea were also coUected from soil boring RTIHJ5 at IWO depths (6-3 leet and 20shy

22 feet) At the shallower 6-8 foot depth both the Ebuco split sample and the Remcor aample

indicated the presence of low levels of BTX compounds The compounds detected included

) chlorobeozcne (Ebasoo 170 ppb Remoor ~ ppb) ethyl benzene (Ebuco 170 ppb Remoor 18

ppb) and llylene (Ebasco 52 ppb Remcor 25 ppb) Trace Ieveii of carbon disulfide (Ebasco

4 ppb Remcor 8 ppb) were also detected No BTX compounds were detected in either sample

from the 2022 foot depth

Semivolatile orpnics were also analyzed in the tamples collected ampom RTB-05 In neither

the lll1lple collected from 6-8 feet nor the sample oollected from 20-22 feet did the Remcor

reaulll indicate any semivolatiles detected with the eweption of bis (2-ethylbellylpbtballte (7~

ppb) in the lballowcc ample Ibis wu abo oboetved in the Ebuco wnpJe (~ ppb) Abo

oblerwd in the Ebuco wnplewere trooe Ieveii of -1PARI iDcludiq naphthalene (380 ppb~

2-methylnapbtbalene (190 ppb) and pbeoanthreoe (250 ppb)

Peoticideo DOl analyzed by Remcor in the two R~ lOll oampleo and wae DOl

detected in the llluco oplilllmplel Low Ieveii of the PCB ltOdor 1254 (Ebuco ~ ppb

Remcor 4000 ppb) wae detected in the lballow H r- llllllple The raulll of -Ia _

fnxD the - ooil barioa oplil oampleo are~ iD Table 3-9 Ao ia iDdicoted in Table

3-9 ooil ~-tiDeaare variable iD the Ebucoand Remcoroplil fnxD

barioa MWmiddot31-S ~ Ieveii of- -Ia itgtcludiq-- (Ebuco 87 ppm RaDoor

170 -~- (Ebuco 201ppm Remcor 120 ppm) are ted_ ~ COllloltliDation iD addition reported COIICOIItntiDea for lead (470 ppa) in the llluco

wnpJe are oipificantlyhiPlaquo than the Y1111101 reported for the Remcor wnpJe In the oplit wnpJe

from MW-39-S (18-22 feet) both the Remcor andEbuco oampleo indicate eleooted tntiDea

of-metab includina lead (Ebuco 1270 ppm Remcor 1300 ppm~ nidtel (Ebuco 413 ppm

Remcor 220 ppm) and vanadium (Ebuco 98 ppm Remcor 65 ppm) and zinc (Ebuco 4430 ppm

Remoor 2700 ppm) and 11r0naJyougest the pr ofsianificant~contamination in the aoiL

Foe -1-Ja indudinc chromium cobalt and zinc sianificanl difterencoo can be oblerwd in

the cooeeotratioos in the middotEbuoo and Remcor samples The ~ for thae variltiona are

unclear but miampht in pan reflect inhomoaeneities in the JOil materials resulting from the presence

of dilcrete metal particles

Concentrationsof metals in Ebasco and Remcor samples from both soil splitscoUected from

boring RTB-5 (6-8 feet and 18-22 feet show generaUy good agreement This appears to be due

-I

at least in part to overall lower metal concentrations than are observed in the MWmiddot38S and

MW-239-S aamples

34 JbullHmbull WcU Sempla

The raulu of oplit wnple analyses of resideotial well aamplea are presented in Tobia 3-10

and 3-11

Volatlle orpnilt analyses of oplir wnples colleded from lbe Mumford and Bood uoideoces

obow _ny pgtd -L No VOC wwe delecled in lbe Ebuco oplit IIDiplo from lbe

Mumford noldeace with lbe of rraoe levela of ~ chloride wtUcb wu lloo

delecled lo lbe llboratory blaak n-- lewb of - VOC were -eel in lbe Bood - -middot-_to be labararoryCCgtrllolllirlaaond were in-shy(__chloride and dllororonn) allo in lbe laboratory blaak

- oltraoe- analyses for lbe -wu_t lo Tillie 3-11 _lbo_and_ _ ___low-1-alooolo

-from belh lbo Mumford and Bood -_ No-of MOJo lor_ ue

- AaJ-1- oplit oomplo- _uy aoodshy

35 Melterler WciJ Stilt Seweln

The rau1u of oplit wnp1e analyses of IJOWIIwater oarnpleo are preoenred in Tobia 3-12

3-13 3-14 and 3-15

The rau1u of oplit oomplo analyses for Utlle orpnico (VOC) pramled lo Tillie

3-12 Overall nlaMiypgtd -riooboerved- oplir llmpletcollecled by- and

Rernoor porticularly in oplill colleded from MW-14 MW-290 and MW~B In oplit llmplet

MW-32 and MW~B certain BTX onmpoundo induclina benzeoe andor toluene were delected

in lbe Ebuco oplit wnp1e bur were below delection limill reported by Rernoor

h evidenced from lbe dar very hiah concenlnltionl of certain chlorinlred VOC -bull

oblerved in both the Ebuoo tplit sample and the Remcor aample from MWmiddot39S Generally aood

( aareernent is observed between split sample concentrations or 12 dichlorethene (Ebasco 6500 ppb

Remcor 5500 ppb) 1richloroelhene (Ebasco 5900 ppb Remcor 7300 ppb) tetrachloroethene

(Ebasco S80 ppb Remcor 720 ppb) and vinyl chloride (Ebasco 560 ppb Remcor 920 ppb)

Finally it should be noted that Remcor did not report data Cor a number of aroundwater

aample aplill collected in February 1990

The raulca of aplit ample comparisons or aemivolatile analylca or arourKtwater aamplea are

presented in Table 3-13 No aemivolatile compounds were detected in either the Ebuco or

Rancor aamples from MW-465 In the aample from MW-325 law Ieveii of

4-lthloro-3-melhytplgteool- decected in both the Ebaaco (79 ppb) aad Rancor (47 ppb) u wu

I 4-didllorobeaze (Ebaaco 16 ppb Rancor 12 ppb) In addition in the Eboaco aplil ample

law Ieveii of 4-melbylpbenol (16 ppb~ aapblhalene (46 ppb) aad 2-melhylaaplolhalene (23 ppb)

aad J ocher PAJh _ a1ao decected in the ample Theae compouoda _ DOl decected

in the Rancor ample

Tbe naulb of Ebaaco tplil ample ana1yaa of PCBa -lhallllce Ieveii of PCBa (leal

lhae or equoloo 10 ppb) may be _ 11 or below required deleclioe 1imila ill the aamplea

from both MW-325 aad MW-465 PCBa no1 howevw delecled ill the Rancor IOIIIIpiea Tbe

Ebaaco aplil ample raulll are bullnderaoina urther rmew

Tbe raulll of aplilaample IIJOUndwaler mell1s ana1yaa comparioonaare -oed in Table

3-14 Agt ia indicaoed both fillered and unfillered apUI samples were analyzed Splil oample

analyaes foe both fillered and unfillered ana1yaa show generally pgtd aiiJeemenl The OyenenJ1

reaulca indicate peralJy low filtered and unfiltered metal concentrations in goundwater aamplcs

from wdla MW-14 MW-29D MW-40B MW-41B and MW-4SB with melal coocenlrltiona 1aradY below MCIs Elevated concentrations of certain metals are however observed in both filtered

and unfiltered lplit samples from MW-39S In particular concentrations of cobalt (Ebuco 1090

ppb Remcor 920 ppb) are unusuaDy high even in filtered samples The overall resulta for MWshy

39S sugest the pusence of aorne metals contamination

Finally u previously noted metals results for certain split sarnplcsooUected during February

1990 were not reported by Remcor

LOshy

-~-

The reaults of volatile orpnic anaJyaea for soil and water split samplea collected from

Western Ravine test pit 3 are presented in Table 3middot1 The results of analyses or Ebucos soil

sample lplits indicate the presence or trace levels or methylene chloride and adone both of which

are amunon laboracory ooncaminantl u indicated by their presence in usociaced laboratory blanb

Allo decected were trace levela of toluene (3 ppb) oourrina at concentratiou below required

detectioa limits Remcor did noc report the presence of any volatile orpnics in ica corresponding

aaamp~e

Ill a IJOUDltIwater otpllt aample collocted from the bottom of the aame teat pit oo alatile

orpnica _ dotectod ia eithec Reaxora aample oc in Ebucoa tpllt aample

32 Slw Serttm Spll SpUf Swplc

The - of w- of a IAidace a aamp1e otpllt collocted 1rom the w- Slope

(loww ma- 114) are preaeated ia Tabla 3-2 3-3 3-4 aad 3-5 A--ohalatie

orpttio _wta (Table 3-l) iadicatea the abaeace ofdoteaable -tile orpnica itt bocb the_ _aad_ Aa iadicated ia Table 3-3 the Remcor noulu iadicatc that oo a orpnica _

detected The - oplit aample reoulta are aenerally coaaiotent with the Remcoc noulu but do

iadicatcthe ~ pr-ce 011 trace levcla o ceruinpolyqdic aromatichydrocarbooa(PAHa)

lbeae iadude pbenanthrene (120 ppb) Ouoranthene (230 ppb) aad pyrene (240 ppb) AU of theae

PAHa were reported preoent at levels below the required detection limit The - of theae

PAHa mipt be related paat deposition and erosion o upbalt related materials from the upper

end of the ravine

The Ebuco split ample resulcs also indicaced the posstble presence of trace lcvels of PCB

arodor 1260 at decection limit levels (88 ppb) u well u the possible presence of trace reaidues

of the pesticide DDT at levels below the required decection limit The Remcor results did not

indicate the presence of trace PCB Ieveli Pesticides were not analyzed by Remcor

The results of metals analyses for the respective samples are presented in Table 3-5 A

comparison of the results shows generally good aareement between the Remcor sample and the

Ebuco aplit sample with the possible exception of cobalt In this cue the Remcor result (140

makg)is somewhat eJevated and higher than the value reported in the Ebuco split sample (147

ppm) Other results for both samples are relatively consistent and do not show evidence of

tJsnificant metals contamination

33 Syhmrftq SgJI Bodgg Split $ampla

A oeria ol oubourlace soil boring oplit samplawere oolloclted and analyzed by Ebuoo The

results of these analyla are presented in Tables 3-6 3middot7 3-8 and 3-9

The reoulll of volatile orpnic oompound analylea (VOC) lor oubourfoce ooil tplit aamplea

are pre1111ted iD Table 3-6 ~ is indicted the concentrations of certain volatile orpnicl iD the

Bbuco optit sample rom boring MW-39-S (18-20 loet) -ely hiah aod required tample

dilutioo aod reaaalyliL Preaeot in hiah lrationl were 12-dicbloroethene (lOCal) (23000

ppb) aod tridiJoroelheoe (110000 ppb) Low leYeb of other volatile orpnica including

- -e (II ppb) letrachloroethe (370 ppb) aod lllmiddottricbloroethaoe (15 ppb) wue aloo

- - a1oo reported hiah 12-dicbloltootheoe (~ ppb~ aod - (1900 ppb) lrationl in the sample althoup _ conoeolrltionl were oubotantially lower t1w1 the

valuel reported in the Bbuco optit oample dilution analysia Due to eleYated detection linUu

Remcor did not report detectable oonceolrationl ol any other VOC The dilcrepancy beiWeen

the Ebuo and Remcor 12-dichloroethene and tricbloroethene results miampht be due to

concentratiool which could have exceeded the calibration ranee for the Remcor sample

For IUblurfacesoil sample MW-38-S (8-10 feet) good aareement wu oblervedbetween the

Ebuco iplit sample and the Remcot sample In both samples aeveral BTX compounds were

detected including toluene (Ebuoo 16000 ppb Remcor 20000 ppb~ ll)lene (Ebasco 55000 ppb

Remoor 75000 ppb) and ethylbenzene (Ebuco 11000 ppb Remoor 13000 ppb)

5plit aamplea were also coUected from soil boring RTIHJ5 at IWO depths (6-3 leet and 20shy

22 feet) At the shallower 6-8 foot depth both the Ebuco split sample and the Remcor aample

indicated the presence of low levels of BTX compounds The compounds detected included

) chlorobeozcne (Ebasoo 170 ppb Remoor ~ ppb) ethyl benzene (Ebuco 170 ppb Remoor 18

ppb) and llylene (Ebasco 52 ppb Remcor 25 ppb) Trace Ieveii of carbon disulfide (Ebasco

4 ppb Remcor 8 ppb) were also detected No BTX compounds were detected in either sample

from the 2022 foot depth

Semivolatile orpnics were also analyzed in the tamples collected ampom RTB-05 In neither

the lll1lple collected from 6-8 feet nor the sample oollected from 20-22 feet did the Remcor

reaulll indicate any semivolatiles detected with the eweption of bis (2-ethylbellylpbtballte (7~

ppb) in the lballowcc ample Ibis wu abo oboetved in the Ebuco wnpJe (~ ppb) Abo

oblerwd in the Ebuco wnplewere trooe Ieveii of -1PARI iDcludiq naphthalene (380 ppb~

2-methylnapbtbalene (190 ppb) and pbeoanthreoe (250 ppb)

Peoticideo DOl analyzed by Remcor in the two R~ lOll oampleo and wae DOl

detected in the llluco oplilllmplel Low Ieveii of the PCB ltOdor 1254 (Ebuco ~ ppb

Remcor 4000 ppb) wae detected in the lballow H r- llllllple The raulll of -Ia _

fnxD the - ooil barioa oplil oampleo are~ iD Table 3-9 Ao ia iDdicoted in Table

3-9 ooil ~-tiDeaare variable iD the Ebucoand Remcoroplil fnxD

barioa MWmiddot31-S ~ Ieveii of- -Ia itgtcludiq-- (Ebuco 87 ppm RaDoor

170 -~- (Ebuco 201ppm Remcor 120 ppm) are ted_ ~ COllloltliDation iD addition reported COIICOIItntiDea for lead (470 ppa) in the llluco

wnpJe are oipificantlyhiPlaquo than the Y1111101 reported for the Remcor wnpJe In the oplit wnpJe

from MW-39-S (18-22 feet) both the Remcor andEbuco oampleo indicate eleooted tntiDea

of-metab includina lead (Ebuco 1270 ppm Remcor 1300 ppm~ nidtel (Ebuco 413 ppm

Remcor 220 ppm) and vanadium (Ebuco 98 ppm Remcor 65 ppm) and zinc (Ebuco 4430 ppm

Remoor 2700 ppm) and 11r0naJyougest the pr ofsianificant~contamination in the aoiL

Foe -1-Ja indudinc chromium cobalt and zinc sianificanl difterencoo can be oblerwd in

the cooeeotratioos in the middotEbuoo and Remcor samples The ~ for thae variltiona are

unclear but miampht in pan reflect inhomoaeneities in the JOil materials resulting from the presence

of dilcrete metal particles

Concentrationsof metals in Ebasco and Remcor samples from both soil splitscoUected from

boring RTB-5 (6-8 feet and 18-22 feet show generaUy good agreement This appears to be due

-I

at least in part to overall lower metal concentrations than are observed in the MWmiddot38S and

MW-239-S aamples

34 JbullHmbull WcU Sempla

The raulu of oplit wnple analyses of resideotial well aamplea are presented in Tobia 3-10

and 3-11

Volatlle orpnilt analyses of oplir wnples colleded from lbe Mumford and Bood uoideoces

obow _ny pgtd -L No VOC wwe delecled in lbe Ebuco oplit IIDiplo from lbe

Mumford noldeace with lbe of rraoe levela of ~ chloride wtUcb wu lloo

delecled lo lbe llboratory blaak n-- lewb of - VOC were -eel in lbe Bood - -middot-_to be labararoryCCgtrllolllirlaaond were in-shy(__chloride and dllororonn) allo in lbe laboratory blaak

- oltraoe- analyses for lbe -wu_t lo Tillie 3-11 _lbo_and_ _ ___low-1-alooolo

-from belh lbo Mumford and Bood -_ No-of MOJo lor_ ue

- AaJ-1- oplit oomplo- _uy aoodshy

35 Melterler WciJ Stilt Seweln

The rau1u of oplit wnp1e analyses of IJOWIIwater oarnpleo are preoenred in Tobia 3-12

3-13 3-14 and 3-15

The rau1u of oplit oomplo analyses for Utlle orpnico (VOC) pramled lo Tillie

3-12 Overall nlaMiypgtd -riooboerved- oplir llmpletcollecled by- and

Rernoor porticularly in oplill colleded from MW-14 MW-290 and MW~B In oplit llmplet

MW-32 and MW~B certain BTX onmpoundo induclina benzeoe andor toluene were delected

in lbe Ebuco oplit wnp1e bur were below delection limill reported by Rernoor

h evidenced from lbe dar very hiah concenlnltionl of certain chlorinlred VOC -bull

oblerved in both the Ebuoo tplit sample and the Remcor aample from MWmiddot39S Generally aood

( aareernent is observed between split sample concentrations or 12 dichlorethene (Ebasco 6500 ppb

Remcor 5500 ppb) 1richloroelhene (Ebasco 5900 ppb Remcor 7300 ppb) tetrachloroethene

(Ebasco S80 ppb Remcor 720 ppb) and vinyl chloride (Ebasco 560 ppb Remcor 920 ppb)

Finally it should be noted that Remcor did not report data Cor a number of aroundwater

aample aplill collected in February 1990

The raulca of aplit ample comparisons or aemivolatile analylca or arourKtwater aamplea are

presented in Table 3-13 No aemivolatile compounds were detected in either the Ebuco or

Rancor aamples from MW-465 In the aample from MW-325 law Ieveii of

4-lthloro-3-melhytplgteool- decected in both the Ebaaco (79 ppb) aad Rancor (47 ppb) u wu

I 4-didllorobeaze (Ebaaco 16 ppb Rancor 12 ppb) In addition in the Eboaco aplil ample

law Ieveii of 4-melbylpbenol (16 ppb~ aapblhalene (46 ppb) aad 2-melhylaaplolhalene (23 ppb)

aad J ocher PAJh _ a1ao decected in the ample Theae compouoda _ DOl decected

in the Rancor ample

Tbe naulb of Ebaaco tplil ample ana1yaa of PCBa -lhallllce Ieveii of PCBa (leal

lhae or equoloo 10 ppb) may be _ 11 or below required deleclioe 1imila ill the aamplea

from both MW-325 aad MW-465 PCBa no1 howevw delecled ill the Rancor IOIIIIpiea Tbe

Ebaaco aplil ample raulll are bullnderaoina urther rmew

Tbe raulll of aplilaample IIJOUndwaler mell1s ana1yaa comparioonaare -oed in Table

3-14 Agt ia indicaoed both fillered and unfillered apUI samples were analyzed Splil oample

analyaes foe both fillered and unfillered ana1yaa show generally pgtd aiiJeemenl The OyenenJ1

reaulca indicate peralJy low filtered and unfiltered metal concentrations in goundwater aamplcs

from wdla MW-14 MW-29D MW-40B MW-41B and MW-4SB with melal coocenlrltiona 1aradY below MCIs Elevated concentrations of certain metals are however observed in both filtered

and unfiltered lplit samples from MW-39S In particular concentrations of cobalt (Ebuco 1090

ppb Remcor 920 ppb) are unusuaDy high even in filtered samples The overall resulta for MWshy

39S sugest the pusence of aorne metals contamination

Finally u previously noted metals results for certain split sarnplcsooUected during February

1990 were not reported by Remcor

LOshy

-~-

The results of metals analyses for the respective samples are presented in Table 3-5 A

comparison of the results shows generally good aareement between the Remcor sample and the

Ebuco aplit sample with the possible exception of cobalt In this cue the Remcor result (140

makg)is somewhat eJevated and higher than the value reported in the Ebuco split sample (147

ppm) Other results for both samples are relatively consistent and do not show evidence of

tJsnificant metals contamination

33 Syhmrftq SgJI Bodgg Split $ampla

A oeria ol oubourlace soil boring oplit samplawere oolloclted and analyzed by Ebuoo The

results of these analyla are presented in Tables 3-6 3middot7 3-8 and 3-9

The reoulll of volatile orpnic oompound analylea (VOC) lor oubourfoce ooil tplit aamplea

are pre1111ted iD Table 3-6 ~ is indicted the concentrations of certain volatile orpnicl iD the

Bbuco optit sample rom boring MW-39-S (18-20 loet) -ely hiah aod required tample

dilutioo aod reaaalyliL Preaeot in hiah lrationl were 12-dicbloroethene (lOCal) (23000

ppb) aod tridiJoroelheoe (110000 ppb) Low leYeb of other volatile orpnica including

- -e (II ppb) letrachloroethe (370 ppb) aod lllmiddottricbloroethaoe (15 ppb) wue aloo

- - a1oo reported hiah 12-dicbloltootheoe (~ ppb~ aod - (1900 ppb) lrationl in the sample althoup _ conoeolrltionl were oubotantially lower t1w1 the

valuel reported in the Bbuco optit oample dilution analysia Due to eleYated detection linUu

Remcor did not report detectable oonceolrationl ol any other VOC The dilcrepancy beiWeen

the Ebuo and Remcor 12-dichloroethene and tricbloroethene results miampht be due to

concentratiool which could have exceeded the calibration ranee for the Remcor sample

For IUblurfacesoil sample MW-38-S (8-10 feet) good aareement wu oblervedbetween the

Ebuco iplit sample and the Remcot sample In both samples aeveral BTX compounds were

detected including toluene (Ebuoo 16000 ppb Remcor 20000 ppb~ ll)lene (Ebasco 55000 ppb

Remoor 75000 ppb) and ethylbenzene (Ebuco 11000 ppb Remoor 13000 ppb)

5plit aamplea were also coUected from soil boring RTIHJ5 at IWO depths (6-3 leet and 20shy

22 feet) At the shallower 6-8 foot depth both the Ebuco split sample and the Remcor aample

indicated the presence of low levels of BTX compounds The compounds detected included

) chlorobeozcne (Ebasoo 170 ppb Remoor ~ ppb) ethyl benzene (Ebuco 170 ppb Remoor 18

ppb) and llylene (Ebasco 52 ppb Remcor 25 ppb) Trace Ieveii of carbon disulfide (Ebasco

4 ppb Remcor 8 ppb) were also detected No BTX compounds were detected in either sample

from the 2022 foot depth

Semivolatile orpnics were also analyzed in the tamples collected ampom RTB-05 In neither

the lll1lple collected from 6-8 feet nor the sample oollected from 20-22 feet did the Remcor

reaulll indicate any semivolatiles detected with the eweption of bis (2-ethylbellylpbtballte (7~

ppb) in the lballowcc ample Ibis wu abo oboetved in the Ebuco wnpJe (~ ppb) Abo

oblerwd in the Ebuco wnplewere trooe Ieveii of -1PARI iDcludiq naphthalene (380 ppb~

2-methylnapbtbalene (190 ppb) and pbeoanthreoe (250 ppb)

Peoticideo DOl analyzed by Remcor in the two R~ lOll oampleo and wae DOl

detected in the llluco oplilllmplel Low Ieveii of the PCB ltOdor 1254 (Ebuco ~ ppb

Remcor 4000 ppb) wae detected in the lballow H r- llllllple The raulll of -Ia _

fnxD the - ooil barioa oplil oampleo are~ iD Table 3-9 Ao ia iDdicoted in Table

3-9 ooil ~-tiDeaare variable iD the Ebucoand Remcoroplil fnxD

barioa MWmiddot31-S ~ Ieveii of- -Ia itgtcludiq-- (Ebuco 87 ppm RaDoor

170 -~- (Ebuco 201ppm Remcor 120 ppm) are ted_ ~ COllloltliDation iD addition reported COIICOIItntiDea for lead (470 ppa) in the llluco

wnpJe are oipificantlyhiPlaquo than the Y1111101 reported for the Remcor wnpJe In the oplit wnpJe

from MW-39-S (18-22 feet) both the Remcor andEbuco oampleo indicate eleooted tntiDea

of-metab includina lead (Ebuco 1270 ppm Remcor 1300 ppm~ nidtel (Ebuco 413 ppm

Remcor 220 ppm) and vanadium (Ebuco 98 ppm Remcor 65 ppm) and zinc (Ebuco 4430 ppm

Remoor 2700 ppm) and 11r0naJyougest the pr ofsianificant~contamination in the aoiL

Foe -1-Ja indudinc chromium cobalt and zinc sianificanl difterencoo can be oblerwd in

the cooeeotratioos in the middotEbuoo and Remcor samples The ~ for thae variltiona are

unclear but miampht in pan reflect inhomoaeneities in the JOil materials resulting from the presence

of dilcrete metal particles

Concentrationsof metals in Ebasco and Remcor samples from both soil splitscoUected from

boring RTB-5 (6-8 feet and 18-22 feet show generaUy good agreement This appears to be due

-I

at least in part to overall lower metal concentrations than are observed in the MWmiddot38S and

MW-239-S aamples

34 JbullHmbull WcU Sempla

The raulu of oplit wnple analyses of resideotial well aamplea are presented in Tobia 3-10

and 3-11

Volatlle orpnilt analyses of oplir wnples colleded from lbe Mumford and Bood uoideoces

obow _ny pgtd -L No VOC wwe delecled in lbe Ebuco oplit IIDiplo from lbe

Mumford noldeace with lbe of rraoe levela of ~ chloride wtUcb wu lloo

delecled lo lbe llboratory blaak n-- lewb of - VOC were -eel in lbe Bood - -middot-_to be labararoryCCgtrllolllirlaaond were in-shy(__chloride and dllororonn) allo in lbe laboratory blaak

- oltraoe- analyses for lbe -wu_t lo Tillie 3-11 _lbo_and_ _ ___low-1-alooolo

-from belh lbo Mumford and Bood -_ No-of MOJo lor_ ue

- AaJ-1- oplit oomplo- _uy aoodshy

35 Melterler WciJ Stilt Seweln

The rau1u of oplit wnp1e analyses of IJOWIIwater oarnpleo are preoenred in Tobia 3-12

3-13 3-14 and 3-15

The rau1u of oplit oomplo analyses for Utlle orpnico (VOC) pramled lo Tillie

3-12 Overall nlaMiypgtd -riooboerved- oplir llmpletcollecled by- and

Rernoor porticularly in oplill colleded from MW-14 MW-290 and MW~B In oplit llmplet

MW-32 and MW~B certain BTX onmpoundo induclina benzeoe andor toluene were delected

in lbe Ebuco oplit wnp1e bur were below delection limill reported by Rernoor

h evidenced from lbe dar very hiah concenlnltionl of certain chlorinlred VOC -bull

oblerved in both the Ebuoo tplit sample and the Remcor aample from MWmiddot39S Generally aood

( aareernent is observed between split sample concentrations or 12 dichlorethene (Ebasco 6500 ppb

Remcor 5500 ppb) 1richloroelhene (Ebasco 5900 ppb Remcor 7300 ppb) tetrachloroethene

(Ebasco S80 ppb Remcor 720 ppb) and vinyl chloride (Ebasco 560 ppb Remcor 920 ppb)

Finally it should be noted that Remcor did not report data Cor a number of aroundwater

aample aplill collected in February 1990

The raulca of aplit ample comparisons or aemivolatile analylca or arourKtwater aamplea are

presented in Table 3-13 No aemivolatile compounds were detected in either the Ebuco or

Rancor aamples from MW-465 In the aample from MW-325 law Ieveii of

4-lthloro-3-melhytplgteool- decected in both the Ebaaco (79 ppb) aad Rancor (47 ppb) u wu

I 4-didllorobeaze (Ebaaco 16 ppb Rancor 12 ppb) In addition in the Eboaco aplil ample

law Ieveii of 4-melbylpbenol (16 ppb~ aapblhalene (46 ppb) aad 2-melhylaaplolhalene (23 ppb)

aad J ocher PAJh _ a1ao decected in the ample Theae compouoda _ DOl decected

in the Rancor ample

Tbe naulb of Ebaaco tplil ample ana1yaa of PCBa -lhallllce Ieveii of PCBa (leal

lhae or equoloo 10 ppb) may be _ 11 or below required deleclioe 1imila ill the aamplea

from both MW-325 aad MW-465 PCBa no1 howevw delecled ill the Rancor IOIIIIpiea Tbe

Ebaaco aplil ample raulll are bullnderaoina urther rmew

Tbe raulll of aplilaample IIJOUndwaler mell1s ana1yaa comparioonaare -oed in Table

3-14 Agt ia indicaoed both fillered and unfillered apUI samples were analyzed Splil oample

analyaes foe both fillered and unfillered ana1yaa show generally pgtd aiiJeemenl The OyenenJ1

reaulca indicate peralJy low filtered and unfiltered metal concentrations in goundwater aamplcs

from wdla MW-14 MW-29D MW-40B MW-41B and MW-4SB with melal coocenlrltiona 1aradY below MCIs Elevated concentrations of certain metals are however observed in both filtered

and unfiltered lplit samples from MW-39S In particular concentrations of cobalt (Ebuco 1090

ppb Remcor 920 ppb) are unusuaDy high even in filtered samples The overall resulta for MWshy

39S sugest the pusence of aorne metals contamination

Finally u previously noted metals results for certain split sarnplcsooUected during February

1990 were not reported by Remcor

LOshy

-~-

) chlorobeozcne (Ebasoo 170 ppb Remoor ~ ppb) ethyl benzene (Ebuco 170 ppb Remoor 18

ppb) and llylene (Ebasco 52 ppb Remcor 25 ppb) Trace Ieveii of carbon disulfide (Ebasco

4 ppb Remcor 8 ppb) were also detected No BTX compounds were detected in either sample

from the 2022 foot depth

Semivolatile orpnics were also analyzed in the tamples collected ampom RTB-05 In neither

the lll1lple collected from 6-8 feet nor the sample oollected from 20-22 feet did the Remcor

reaulll indicate any semivolatiles detected with the eweption of bis (2-ethylbellylpbtballte (7~

ppb) in the lballowcc ample Ibis wu abo oboetved in the Ebuco wnpJe (~ ppb) Abo

oblerwd in the Ebuco wnplewere trooe Ieveii of -1PARI iDcludiq naphthalene (380 ppb~

2-methylnapbtbalene (190 ppb) and pbeoanthreoe (250 ppb)

Peoticideo DOl analyzed by Remcor in the two R~ lOll oampleo and wae DOl

detected in the llluco oplilllmplel Low Ieveii of the PCB ltOdor 1254 (Ebuco ~ ppb

Remcor 4000 ppb) wae detected in the lballow H r- llllllple The raulll of -Ia _

fnxD the - ooil barioa oplil oampleo are~ iD Table 3-9 Ao ia iDdicoted in Table

3-9 ooil ~-tiDeaare variable iD the Ebucoand Remcoroplil fnxD

barioa MWmiddot31-S ~ Ieveii of- -Ia itgtcludiq-- (Ebuco 87 ppm RaDoor

170 -~- (Ebuco 201ppm Remcor 120 ppm) are ted_ ~ COllloltliDation iD addition reported COIICOIItntiDea for lead (470 ppa) in the llluco

wnpJe are oipificantlyhiPlaquo than the Y1111101 reported for the Remcor wnpJe In the oplit wnpJe

from MW-39-S (18-22 feet) both the Remcor andEbuco oampleo indicate eleooted tntiDea

of-metab includina lead (Ebuco 1270 ppm Remcor 1300 ppm~ nidtel (Ebuco 413 ppm

Remcor 220 ppm) and vanadium (Ebuco 98 ppm Remcor 65 ppm) and zinc (Ebuco 4430 ppm

Remoor 2700 ppm) and 11r0naJyougest the pr ofsianificant~contamination in the aoiL

Foe -1-Ja indudinc chromium cobalt and zinc sianificanl difterencoo can be oblerwd in

the cooeeotratioos in the middotEbuoo and Remcor samples The ~ for thae variltiona are

unclear but miampht in pan reflect inhomoaeneities in the JOil materials resulting from the presence

of dilcrete metal particles

Concentrationsof metals in Ebasco and Remcor samples from both soil splitscoUected from

boring RTB-5 (6-8 feet and 18-22 feet show generaUy good agreement This appears to be due

-I

at least in part to overall lower metal concentrations than are observed in the MWmiddot38S and

MW-239-S aamples

34 JbullHmbull WcU Sempla

The raulu of oplit wnple analyses of resideotial well aamplea are presented in Tobia 3-10

and 3-11

Volatlle orpnilt analyses of oplir wnples colleded from lbe Mumford and Bood uoideoces

obow _ny pgtd -L No VOC wwe delecled in lbe Ebuco oplit IIDiplo from lbe

Mumford noldeace with lbe of rraoe levela of ~ chloride wtUcb wu lloo

delecled lo lbe llboratory blaak n-- lewb of - VOC were -eel in lbe Bood - -middot-_to be labararoryCCgtrllolllirlaaond were in-shy(__chloride and dllororonn) allo in lbe laboratory blaak

- oltraoe- analyses for lbe -wu_t lo Tillie 3-11 _lbo_and_ _ ___low-1-alooolo

-from belh lbo Mumford and Bood -_ No-of MOJo lor_ ue

- AaJ-1- oplit oomplo- _uy aoodshy

35 Melterler WciJ Stilt Seweln

The rau1u of oplit wnp1e analyses of IJOWIIwater oarnpleo are preoenred in Tobia 3-12

3-13 3-14 and 3-15

The rau1u of oplit oomplo analyses for Utlle orpnico (VOC) pramled lo Tillie

3-12 Overall nlaMiypgtd -riooboerved- oplir llmpletcollecled by- and

Rernoor porticularly in oplill colleded from MW-14 MW-290 and MW~B In oplit llmplet

MW-32 and MW~B certain BTX onmpoundo induclina benzeoe andor toluene were delected

in lbe Ebuco oplit wnp1e bur were below delection limill reported by Rernoor

h evidenced from lbe dar very hiah concenlnltionl of certain chlorinlred VOC -bull

oblerved in both the Ebuoo tplit sample and the Remcor aample from MWmiddot39S Generally aood

( aareernent is observed between split sample concentrations or 12 dichlorethene (Ebasco 6500 ppb

Remcor 5500 ppb) 1richloroelhene (Ebasco 5900 ppb Remcor 7300 ppb) tetrachloroethene

(Ebasco S80 ppb Remcor 720 ppb) and vinyl chloride (Ebasco 560 ppb Remcor 920 ppb)

Finally it should be noted that Remcor did not report data Cor a number of aroundwater

aample aplill collected in February 1990

The raulca of aplit ample comparisons or aemivolatile analylca or arourKtwater aamplea are

presented in Table 3-13 No aemivolatile compounds were detected in either the Ebuco or

Rancor aamples from MW-465 In the aample from MW-325 law Ieveii of

4-lthloro-3-melhytplgteool- decected in both the Ebaaco (79 ppb) aad Rancor (47 ppb) u wu

I 4-didllorobeaze (Ebaaco 16 ppb Rancor 12 ppb) In addition in the Eboaco aplil ample

law Ieveii of 4-melbylpbenol (16 ppb~ aapblhalene (46 ppb) aad 2-melhylaaplolhalene (23 ppb)

aad J ocher PAJh _ a1ao decected in the ample Theae compouoda _ DOl decected

in the Rancor ample

Tbe naulb of Ebaaco tplil ample ana1yaa of PCBa -lhallllce Ieveii of PCBa (leal

lhae or equoloo 10 ppb) may be _ 11 or below required deleclioe 1imila ill the aamplea

from both MW-325 aad MW-465 PCBa no1 howevw delecled ill the Rancor IOIIIIpiea Tbe

Ebaaco aplil ample raulll are bullnderaoina urther rmew

Tbe raulll of aplilaample IIJOUndwaler mell1s ana1yaa comparioonaare -oed in Table

3-14 Agt ia indicaoed both fillered and unfillered apUI samples were analyzed Splil oample

analyaes foe both fillered and unfillered ana1yaa show generally pgtd aiiJeemenl The OyenenJ1

reaulca indicate peralJy low filtered and unfiltered metal concentrations in goundwater aamplcs

from wdla MW-14 MW-29D MW-40B MW-41B and MW-4SB with melal coocenlrltiona 1aradY below MCIs Elevated concentrations of certain metals are however observed in both filtered

and unfiltered lplit samples from MW-39S In particular concentrations of cobalt (Ebuco 1090

ppb Remcor 920 ppb) are unusuaDy high even in filtered samples The overall resulta for MWshy

39S sugest the pusence of aorne metals contamination

Finally u previously noted metals results for certain split sarnplcsooUected during February

1990 were not reported by Remcor

LOshy

-~-

at least in part to overall lower metal concentrations than are observed in the MWmiddot38S and

MW-239-S aamples

34 JbullHmbull WcU Sempla

The raulu of oplit wnple analyses of resideotial well aamplea are presented in Tobia 3-10

and 3-11

Volatlle orpnilt analyses of oplir wnples colleded from lbe Mumford and Bood uoideoces

obow _ny pgtd -L No VOC wwe delecled in lbe Ebuco oplit IIDiplo from lbe

Mumford noldeace with lbe of rraoe levela of ~ chloride wtUcb wu lloo

delecled lo lbe llboratory blaak n-- lewb of - VOC were -eel in lbe Bood - -middot-_to be labararoryCCgtrllolllirlaaond were in-shy(__chloride and dllororonn) allo in lbe laboratory blaak

- oltraoe- analyses for lbe -wu_t lo Tillie 3-11 _lbo_and_ _ ___low-1-alooolo

-from belh lbo Mumford and Bood -_ No-of MOJo lor_ ue

- AaJ-1- oplit oomplo- _uy aoodshy

35 Melterler WciJ Stilt Seweln

The rau1u of oplit wnp1e analyses of IJOWIIwater oarnpleo are preoenred in Tobia 3-12

3-13 3-14 and 3-15

The rau1u of oplit oomplo analyses for Utlle orpnico (VOC) pramled lo Tillie

3-12 Overall nlaMiypgtd -riooboerved- oplir llmpletcollecled by- and

Rernoor porticularly in oplill colleded from MW-14 MW-290 and MW~B In oplit llmplet

MW-32 and MW~B certain BTX onmpoundo induclina benzeoe andor toluene were delected

in lbe Ebuco oplit wnp1e bur were below delection limill reported by Rernoor

h evidenced from lbe dar very hiah concenlnltionl of certain chlorinlred VOC -bull

oblerved in both the Ebuoo tplit sample and the Remcor aample from MWmiddot39S Generally aood

( aareernent is observed between split sample concentrations or 12 dichlorethene (Ebasco 6500 ppb

Remcor 5500 ppb) 1richloroelhene (Ebasco 5900 ppb Remcor 7300 ppb) tetrachloroethene

(Ebasco S80 ppb Remcor 720 ppb) and vinyl chloride (Ebasco 560 ppb Remcor 920 ppb)

Finally it should be noted that Remcor did not report data Cor a number of aroundwater

aample aplill collected in February 1990

The raulca of aplit ample comparisons or aemivolatile analylca or arourKtwater aamplea are

presented in Table 3-13 No aemivolatile compounds were detected in either the Ebuco or

Rancor aamples from MW-465 In the aample from MW-325 law Ieveii of

4-lthloro-3-melhytplgteool- decected in both the Ebaaco (79 ppb) aad Rancor (47 ppb) u wu

I 4-didllorobeaze (Ebaaco 16 ppb Rancor 12 ppb) In addition in the Eboaco aplil ample

law Ieveii of 4-melbylpbenol (16 ppb~ aapblhalene (46 ppb) aad 2-melhylaaplolhalene (23 ppb)

aad J ocher PAJh _ a1ao decected in the ample Theae compouoda _ DOl decected

in the Rancor ample

Tbe naulb of Ebaaco tplil ample ana1yaa of PCBa -lhallllce Ieveii of PCBa (leal

lhae or equoloo 10 ppb) may be _ 11 or below required deleclioe 1imila ill the aamplea

from both MW-325 aad MW-465 PCBa no1 howevw delecled ill the Rancor IOIIIIpiea Tbe

Ebaaco aplil ample raulll are bullnderaoina urther rmew

Tbe raulll of aplilaample IIJOUndwaler mell1s ana1yaa comparioonaare -oed in Table

3-14 Agt ia indicaoed both fillered and unfillered apUI samples were analyzed Splil oample

analyaes foe both fillered and unfillered ana1yaa show generally pgtd aiiJeemenl The OyenenJ1

reaulca indicate peralJy low filtered and unfiltered metal concentrations in goundwater aamplcs

from wdla MW-14 MW-29D MW-40B MW-41B and MW-4SB with melal coocenlrltiona 1aradY below MCIs Elevated concentrations of certain metals are however observed in both filtered

and unfiltered lplit samples from MW-39S In particular concentrations of cobalt (Ebuco 1090

ppb Remcor 920 ppb) are unusuaDy high even in filtered samples The overall resulta for MWshy

39S sugest the pusence of aorne metals contamination

Finally u previously noted metals results for certain split sarnplcsooUected during February

1990 were not reported by Remcor

LOshy

-~-

( aareernent is observed between split sample concentrations or 12 dichlorethene (Ebasco 6500 ppb

Remcor 5500 ppb) 1richloroelhene (Ebasco 5900 ppb Remcor 7300 ppb) tetrachloroethene

(Ebasco S80 ppb Remcor 720 ppb) and vinyl chloride (Ebasco 560 ppb Remcor 920 ppb)

Finally it should be noted that Remcor did not report data Cor a number of aroundwater

aample aplill collected in February 1990

The raulca of aplit ample comparisons or aemivolatile analylca or arourKtwater aamplea are

presented in Table 3-13 No aemivolatile compounds were detected in either the Ebuco or

Rancor aamples from MW-465 In the aample from MW-325 law Ieveii of

4-lthloro-3-melhytplgteool- decected in both the Ebaaco (79 ppb) aad Rancor (47 ppb) u wu

I 4-didllorobeaze (Ebaaco 16 ppb Rancor 12 ppb) In addition in the Eboaco aplil ample

law Ieveii of 4-melbylpbenol (16 ppb~ aapblhalene (46 ppb) aad 2-melhylaaplolhalene (23 ppb)

aad J ocher PAJh _ a1ao decected in the ample Theae compouoda _ DOl decected

in the Rancor ample

Tbe naulb of Ebaaco tplil ample ana1yaa of PCBa -lhallllce Ieveii of PCBa (leal

lhae or equoloo 10 ppb) may be _ 11 or below required deleclioe 1imila ill the aamplea

from both MW-325 aad MW-465 PCBa no1 howevw delecled ill the Rancor IOIIIIpiea Tbe

Ebaaco aplil ample raulll are bullnderaoina urther rmew

Tbe raulll of aplilaample IIJOUndwaler mell1s ana1yaa comparioonaare -oed in Table

3-14 Agt ia indicaoed both fillered and unfillered apUI samples were analyzed Splil oample

analyaes foe both fillered and unfillered ana1yaa show generally pgtd aiiJeemenl The OyenenJ1

reaulca indicate peralJy low filtered and unfiltered metal concentrations in goundwater aamplcs

from wdla MW-14 MW-29D MW-40B MW-41B and MW-4SB with melal coocenlrltiona 1aradY below MCIs Elevated concentrations of certain metals are however observed in both filtered

and unfiltered lplit samples from MW-39S In particular concentrations of cobalt (Ebuco 1090

ppb Remcor 920 ppb) are unusuaDy high even in filtered samples The overall resulta for MWshy

39S sugest the pusence of aorne metals contamination

Finally u previously noted metals results for certain split sarnplcsooUected during February

1990 were not reported by Remcor

LOshy

-~-

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172 17UO 711 0 1900~ us 0 D 9 1200 1050 1ZCIO bullbullo 11000 ZIOIIII O 2240000 190CIDOO -middot~ suao 2000 tmo 11000

-middot~ 22100 2101 0 0 l5000 0 2JOO 16600__ middot - 4tl O middot 14900 12011 0~ 3JIJ OJU OJU-middot~ OJ 30 1910U 1400

u) -~ uooo 1900 ZNOO -

111111 All --trttl- In 11111 c-gt Yll ottltniiM ted I bull lotl-tbull ~rttGn belbull contrect reqtl rwf bulltectiGn Ubull lt 0 bull Lalilentory dflutlan of wltlNt to u bull letdltoctedottflolndlcotodbulltectiGnlllllt bullbull let dltocted bull dttectiGn llbulllt not reported bullmiddotltotrportedtyen1shy

sect~81 ~~ ~~

i F

otdsrtne 5tl90

- - -

1llJlH MMfNJ bullm pur IWE RIPMSbull

JmAJJWJl

au bullbullbull m middot2 bull ampul IUL 111bull m-2 Ul - Zl EIIU lAIII lAIII

Uwl 10500 0 71400 61000_ 50 111_ middot OlU 1200uao middot 1UO 17UO 011 OlU 0]1 otu lU O 001

Ctctbull o 15000 zozoo 1400 0 _ 110 110 Z20 - 10 11 UOD 660 HIO 0 119middot 140

111 ZIODOO ISIODO 140000 -_middot- 1111 110 OlU -0 -0 o Zt10 2100 o 5100 001 O IU 0 01_ ___ 170- 1DmiddotO 170 190J - 0 0100 IQOD IZOII O IMenlbull OJu ON OJu

Ill 101111 a IZGO nut OlU ON -~ 19 4

HOO 570 Z90

~ All ~r1tlon1 In -Itt- tnt othenIM noted I - lttlbulltW ~rbulltlon btlbull contrt trtd bulltctlon tfbullh 0 bull lttory ctltutiCin of orltiMI --tbull U bull llot bullteet- et tiM lndleetlaquolt tctfan llltlt bullbullbull llot dttectlld bull bulltctlon llbulllt not _ tl-cor

CU 1f1111MiCCMIITI

--

AIILLlll lfSIQIUUL lfll IPliT stpPlE COMSQHS

~

- -altJil

JalJ2 Ott--thine _ _~lryen1 ctlortbull llelllyt-ctltortbull trillnOfiiUlff 11-tldlt-un 11-tlcflt~_

1Z-oldiiiCto~tJ 1Z-otclll_ 111-Trtbullt- middot-- cttnT_twtbull_ 11-tttlllt clomiddot111tbullt IIIbullTrtbullt

06 ~ -_z~-middot---

Tlltrtdltoroett 11ZZmiddotTotrldlt-ttwn _

IOUOil_

IdlyI--shyXyl-lttotol) middotshyJ1b1i All cwantrotfon~lnUI1 (ppb)unt otttrwiMAOted J bull httbulltlldcenclrltrottonbeiOIIcontrwt rlaquoftectlon ltolt 0 bull LIDotltcNydllltlonof otIINI Mllfl(o u bull lot tlaquoted ot tM lndfettel bulltectfon llolt bullbullbull lot bulltted bull cMctfon llolt IIDt rPItedbull middot lot rpotted byen __ l bull AIM detected In hContory bl-

ClOIPliiiGflfLD 090middot 41

secte------ 8j it

~

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4J -~~ i~ -- ~~ t F

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lll2Lil Ahbulll 110 00 1101lJ7001 7001_ ~~ 5001 401 5001 401 VNnlt 101 101101 101 1201 55 01 1401 j~ lerytlhbull 101 101201 201

401 501 401 501 Clcl~ 343000Cllh 501 4 01 501 401

-~ 340000 519000 ii 10CII 701 tOaJ 701 11 bullbull toou 10GU

_ iE tOO Ill 1290 1610 -middot~ bull 32 1bullbull 5tJOO 411001 -middot~ 2 -middotmiddot 201 - 1001 14 111 2200 ~~ middot 177101 1Z5CIOI 167101

bullbull -middot~ 101 2 1 201 Ill_ 401 10 401 1oGU

Z5t0 01 50700 mtOI-~ TlleHIUI _ -middotmiddot -~ ZIO IJliOO~

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011gt INIIMI CUIIEIITI SZJ90

1middot

bulla 111I li

iiiiiiiiiiiliiiiil~

I II 1111111111111111111111=11~1

41 I

I

- - -

bullbull

IMlitl SIBfAg SilL 2111 WU iiiUIIHIi

lWlJIWIJ

llhHi lmiddotlD fltU IllmiddotHI 01middot22 lnp 2illll2 2lt1lll

_Ahbulll_ 102000 0 13900 67000

161 c 178 middot39 l47 middot rhbull 1ao o middot0 32500 40000 hryllhbull 0411 097 05U 05

0411 07 0 5U 72 Ctchbull-middot~ 21300 0 47000 1Zl00 0 110000

172 17UO 711 0 1900~ us 0 D 9 1200 1050 1ZCIO bullbullo 11000 ZIOIIII O 2240000 190CIDOO -middot~ suao 2000 tmo 11000

-middot~ 22100 2101 0 0 l5000 0 2JOO 16600__ middot - 4tl O middot 14900 12011 0~ 3JIJ OJU OJU-middot~ OJ 30 1910U 1400

u) -~ uooo 1900 ZNOO -

111111 All --trttl- In 11111 c-gt Yll ottltniiM ted I bull lotl-tbull ~rttGn belbull contrect reqtl rwf bulltectiGn Ubull lt 0 bull Lalilentory dflutlan of wltlNt to u bull letdltoctedottflolndlcotodbulltectiGnlllllt bullbull let dltocted bull dttectiGn llbulllt not reported bullmiddotltotrportedtyen1shy

sect~81 ~~ ~~

i F

otdsrtne 5tl90

- - -

1llJlH MMfNJ bullm pur IWE RIPMSbull

JmAJJWJl

au bullbullbull m middot2 bull ampul IUL 111bull m-2 Ul - Zl EIIU lAIII lAIII

Uwl 10500 0 71400 61000_ 50 111_ middot OlU 1200uao middot 1UO 17UO 011 OlU 0]1 otu lU O 001

Ctctbull o 15000 zozoo 1400 0 _ 110 110 Z20 - 10 11 UOD 660 HIO 0 119middot 140

111 ZIODOO ISIODO 140000 -_middot- 1111 110 OlU -0 -0 o Zt10 2100 o 5100 001 O IU 0 01_ ___ 170- 1DmiddotO 170 190J - 0 0100 IQOD IZOII O IMenlbull OJu ON OJu

Ill 101111 a IZGO nut OlU ON -~ 19 4

HOO 570 Z90

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CU 1f1111MiCCMIITI

--

AIILLlll lfSIQIUUL lfll IPliT stpPlE COMSQHS

~

- -altJil

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1Z-oldiiiCto~tJ 1Z-otclll_ 111-Trtbullt- middot-- cttnT_twtbull_ 11-tttlllt clomiddot111tbullt IIIbullTrtbullt

06 ~ -_z~-middot---

Tlltrtdltoroett 11ZZmiddotTotrldlt-ttwn _

IOUOil_

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ClOIPliiiGflfLD 090middot 41

secte------ 8j it

~

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4J -~~ i~ -- ~~ t F

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- - - -I lllllloll

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lll2Lil Ahbulll 110 00 1101lJ7001 7001_ ~~ 5001 401 5001 401 VNnlt 101 101101 101 1201 55 01 1401 j~ lerytlhbull 101 101201 201

401 501 401 501 Clcl~ 343000Cllh 501 4 01 501 401

-~ 340000 519000 ii 10CII 701 tOaJ 701 11 bullbull toou 10GU

_ iE tOO Ill 1290 1610 -middot~ bull 32 1bullbull 5tJOO 411001 -middot~ 2 -middotmiddot 201 - 1001 14 111 2200 ~~ middot 177101 1Z5CIOI 167101

bullbull -middot~ 101 2 1 201 Ill_ 401 10 401 1oGU

Z5t0 01 50700 mtOI-~ TlleHIUI _ -middotmiddot -~ ZIO IJliOO~

IISaiAil~rbulltt-lnl(llflb)W~l otheniiMnotd I middot htl-tal ~ntltrl below oontrct ~Ired dlt=t lon llbullft 0 bull llllontwy dHvtfan flf orftiMI aple U - lot~tlldlttlwfndlet~teddltectt onllbulllt bullbullbull lot dltecttld bull dltectlon llbulllt not r -tld middot - llotAPCNttdbriiKOI

011gt INIIMI CUIIEIITI SZJ90

- - -

bullbull

IMlitl SIBfAg SilL 2111 WU iiiUIIHIi

lWlJIWIJ

llhHi lmiddotlD fltU IllmiddotHI 01middot22 lnp 2illll2 2lt1lll

_Ahbulll_ 102000 0 13900 67000

161 c 178 middot39 l47 middot rhbull 1ao o middot0 32500 40000 hryllhbull 0411 097 05U 05

0411 07 0 5U 72 Ctchbull-middot~ 21300 0 47000 1Zl00 0 110000

172 17UO 711 0 1900~ us 0 D 9 1200 1050 1ZCIO bullbullo 11000 ZIOIIII O 2240000 190CIDOO -middot~ suao 2000 tmo 11000

-middot~ 22100 2101 0 0 l5000 0 2JOO 16600__ middot - 4tl O middot 14900 12011 0~ 3JIJ OJU OJU-middot~ OJ 30 1910U 1400

u) -~ uooo 1900 ZNOO -

111111 All --trttl- In 11111 c-gt Yll ottltniiM ted I bull lotl-tbull ~rttGn belbull contrect reqtl rwf bulltectiGn Ubull lt 0 bull Lalilentory dflutlan of wltlNt to u bull letdltoctedottflolndlcotodbulltectiGnlllllt bullbull let dltocted bull dttectiGn llbulllt not reported bullmiddotltotrportedtyen1shy

sect~81 ~~ ~~

i F

otdsrtne 5tl90

- - -

1llJlH MMfNJ bullm pur IWE RIPMSbull

JmAJJWJl

au bullbullbull m middot2 bull ampul IUL 111bull m-2 Ul - Zl EIIU lAIII lAIII

Uwl 10500 0 71400 61000_ 50 111_ middot OlU 1200uao middot 1UO 17UO 011 OlU 0]1 otu lU O 001

Ctctbull o 15000 zozoo 1400 0 _ 110 110 Z20 - 10 11 UOD 660 HIO 0 119middot 140

111 ZIODOO ISIODO 140000 -_middot- 1111 110 OlU -0 -0 o Zt10 2100 o 5100 001 O IU 0 01_ ___ 170- 1DmiddotO 170 190J - 0 0100 IQOD IZOII O IMenlbull OJu ON OJu

Ill 101111 a IZGO nut OlU ON -~ 19 4

HOO 570 Z90

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CU 1f1111MiCCMIITI

--

AIILLlll lfSIQIUUL lfll IPliT stpPlE COMSQHS

~

- -altJil

JalJ2 Ott--thine _ _~lryen1 ctlortbull llelllyt-ctltortbull trillnOfiiUlff 11-tldlt-un 11-tlcflt~_

1Z-oldiiiCto~tJ 1Z-otclll_ 111-Trtbullt- middot-- cttnT_twtbull_ 11-tttlllt clomiddot111tbullt IIIbullTrtbullt

06 ~ -_z~-middot---

Tlltrtdltoroett 11ZZmiddotTotrldlt-ttwn _

IOUOil_

IdlyI--shyXyl-lttotol) middotshyJ1b1i All cwantrotfon~lnUI1 (ppb)unt otttrwiMAOted J bull httbulltlldcenclrltrottonbeiOIIcontrwt rlaquoftectlon ltolt 0 bull LIDotltcNydllltlonof otIINI Mllfl(o u bull lot tlaquoted ot tM lndfettel bulltectfon llolt bullbullbull lot bulltted bull cMctfon llolt IIDt rPItedbull middot lot rpotted byen __ l bull AIM detected In hContory bl-

ClOIPliiiGflfLD 090middot 41

secte------ 8j it

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lll2Lil Ahbulll 110 00 1101lJ7001 7001_ ~~ 5001 401 5001 401 VNnlt 101 101101 101 1201 55 01 1401 j~ lerytlhbull 101 101201 201

401 501 401 501 Clcl~ 343000Cllh 501 4 01 501 401

-~ 340000 519000 ii 10CII 701 tOaJ 701 11 bullbull toou 10GU

_ iE tOO Ill 1290 1610 -middot~ bull 32 1bullbull 5tJOO 411001 -middot~ 2 -middotmiddot 201 - 1001 14 111 2200 ~~ middot 177101 1Z5CIOI 167101

bullbull -middot~ 101 2 1 201 Ill_ 401 10 401 1oGU

Z5t0 01 50700 mtOI-~ TlleHIUI _ -middotmiddot -~ ZIO IJliOO~

IISaiAil~rbulltt-lnl(llflb)W~l otheniiMnotd I middot htl-tal ~ntltrl below oontrct ~Ired dlt=t lon llbullft 0 bull llllontwy dHvtfan flf orftiMI aple U - lot~tlldlttlwfndlet~teddltectt onllbulllt bullbullbull lot dltecttld bull dltectlon llbulllt not r -tld middot - llotAPCNttdbriiKOI

011gt INIIMI CUIIEIITI SZJ90

- - -

1llJlH MMfNJ bullm pur IWE RIPMSbull

JmAJJWJl

au bullbullbull m middot2 bull ampul IUL 111bull m-2 Ul - Zl EIIU lAIII lAIII

Uwl 10500 0 71400 61000_ 50 111_ middot OlU 1200uao middot 1UO 17UO 011 OlU 0]1 otu lU O 001

Ctctbull o 15000 zozoo 1400 0 _ 110 110 Z20 - 10 11 UOD 660 HIO 0 119middot 140

111 ZIODOO ISIODO 140000 -_middot- 1111 110 OlU -0 -0 o Zt10 2100 o 5100 001 O IU 0 01_ ___ 170- 1DmiddotO 170 190J - 0 0100 IQOD IZOII O IMenlbull OJu ON OJu

Ill 101111 a IZGO nut OlU ON -~ 19 4

HOO 570 Z90

~ All ~r1tlon1 In -Itt- tnt othenIM noted I - lttlbulltW ~rbulltlon btlbull contrt trtd bulltctlon tfbullh 0 bull lttory ctltutiCin of orltiMI --tbull U bull llot bullteet- et tiM lndleetlaquolt tctfan llltlt bullbullbull llot dttectlld bull bulltctlon llbulllt not _ tl-cor

CU 1f1111MiCCMIITI

--

AIILLlll lfSIQIUUL lfll IPliT stpPlE COMSQHS

~

- -altJil

JalJ2 Ott--thine _ _~lryen1 ctlortbull llelllyt-ctltortbull trillnOfiiUlff 11-tldlt-un 11-tlcflt~_

1Z-oldiiiCto~tJ 1Z-otclll_ 111-Trtbullt- middot-- cttnT_twtbull_ 11-tttlllt clomiddot111tbullt IIIbullTrtbullt

06 ~ -_z~-middot---

Tlltrtdltoroett 11ZZmiddotTotrldlt-ttwn _

IOUOil_

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ClOIPliiiGflfLD 090middot 41

secte------ 8j it

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lll2Lil Ahbulll 110 00 1101lJ7001 7001_ ~~ 5001 401 5001 401 VNnlt 101 101101 101 1201 55 01 1401 j~ lerytlhbull 101 101201 201

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-~ 340000 519000 ii 10CII 701 tOaJ 701 11 bullbull toou 10GU

_ iE tOO Ill 1290 1610 -middot~ bull 32 1bullbull 5tJOO 411001 -middot~ 2 -middotmiddot 201 - 1001 14 111 2200 ~~ middot 177101 1Z5CIOI 167101

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Z5t0 01 50700 mtOI-~ TlleHIUI _ -middotmiddot -~ ZIO IJliOO~

IISaiAil~rbulltt-lnl(llflb)W~l otheniiMnotd I middot htl-tal ~ntltrl below oontrct ~Ired dlt=t lon llbullft 0 bull llllontwy dHvtfan flf orftiMI aple U - lot~tlldlttlwfndlet~teddltectt onllbulllt bullbullbull lot dltecttld bull dltectlon llbulllt not r -tld middot - llotAPCNttdbriiKOI

011gt INIIMI CUIIEIITI SZJ90

--

AIILLlll lfSIQIUUL lfll IPliT stpPlE COMSQHS

~

- -altJil

JalJ2 Ott--thine _ _~lryen1 ctlortbull llelllyt-ctltortbull trillnOfiiUlff 11-tldlt-un 11-tlcflt~_

1Z-oldiiiCto~tJ 1Z-otclll_ 111-Trtbullt- middot-- cttnT_twtbull_ 11-tttlllt clomiddot111tbullt IIIbullTrtbullt

06 ~ -_z~-middot---

Tlltrtdltoroett 11ZZmiddotTotrldlt-ttwn _

IOUOil_

IdlyI--shyXyl-lttotol) middotshyJ1b1i All cwantrotfon~lnUI1 (ppb)unt otttrwiMAOted J bull httbulltlldcenclrltrottonbeiOIIcontrwt rlaquoftectlon ltolt 0 bull LIDotltcNydllltlonof otIINI Mllfl(o u bull lot tlaquoted ot tM lndfettel bulltectfon llolt bullbullbull lot bulltted bull cMctfon llolt IIDt rPItedbull middot lot rpotted byen __ l bull AIM detected In hContory bl-

ClOIPliiiGflfLD 090middot 41

secte------ 8j it

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_ iE tOO Ill 1290 1610 -middot~ bull 32 1bullbull 5tJOO 411001 -middot~ 2 -middotmiddot 201 - 1001 14 111 2200 ~~ middot 177101 1Z5CIOI 167101

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011gt INIIMI CUIIEIITI SZJ90

- - - -I lllllloll

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-~ 340000 519000 ii 10CII 701 tOaJ 701 11 bullbull toou 10GU

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011gt INIIMI CUIIEIITI SZJ90

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OLD SPRINGFIELD LILL ADMIN I STRATIVE RpoundCORO

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~ -

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TH IIIIIDaiB BII llllli lillalll shylmLI

llllll llllll ~e 1U1illl - 1iillll2 shy

llllillDIR llilllll jAl181_ wooo 3Z7D 1JCll middot 5JOU

M 1JCll_ n M~ 195111 245 0 nbull

leryllhbull middot ig Cllclbull -~ 401000 416000 middot -~ ii -middot J4JIIO middot 1710 5710 t- middot -middotmiddotu middot F tMO middot _-middot~ -middotmiddot _ - middot middot 121100) -middot~~ lllwr bull -middotmiddot _-~ ~~-middot llhll

-~ 121

0

-middotmiddot bull47111 -middotmiddot bull 1JOU

bull

llllli All CGICWtrlltl- I lolll ltf) - otMriIM ted 1 middot 11t-t~rtl~nbelowcontrecttrldttectlenllbulllt o bull L-wytttvtfonoforlofNI U bull lot datt~etbull ot die lnd lctecl bulltectl or~ llbullh middot middot bull lotdateeted middot dttectlonllbullltnotr~tlaquolt

bull middot lktt -ted bf I-cor

OlOIHIIIGCICMfiiU Df0 middot 61 5Z90

~~j~~~~~~i~ii~i~i~~~ ii

--

I ~~~ 1=21I I Qil I ~~~

I 1

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1I

=~~ 1

11

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~rl I I 1

11

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~~~

~~middot I ~i31iioiii~~o4~io~io~i~

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~ -

-

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TH IIIIIDaiB BII llllli lillalll shylmLI

llllll llllll ~e 1U1illl - 1iillll2 shy

llllillDIR llilllll jAl181_ wooo 3Z7D 1JCll middot 5JOU

M 1JCll_ n M~ 195111 245 0 nbull

leryllhbull middot ig Cllclbull -~ 401000 416000 middot -~ ii -middot J4JIIO middot 1710 5710 t- middot -middotmiddotu middot F tMO middot _-middot~ -middotmiddot _ - middot middot 121100) -middot~~ lllwr bull -middotmiddot _-~ ~~-middot llhll

-~ 121

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-middotmiddot bull47111 -middotmiddot bull 1JOU

bull

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bull middot lktt -ted bf I-cor

OlOIHIIIGCICMfiiU Df0 middot 61 5Z90

I 1

11

11

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11

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~~~

~~middot I ~i31iioiii~~o4~io~io~i~

i2o~NN~middot-middot~~~~-i~Nmiddot~~middot~

~ -

-

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TH IIIIIDaiB BII llllli lillalll shylmLI

llllll llllll ~e 1U1illl - 1iillll2 shy

llllillDIR llilllll jAl181_ wooo 3Z7D 1JCll middot 5JOU

M 1JCll_ n M~ 195111 245 0 nbull

leryllhbull middot ig Cllclbull -~ 401000 416000 middot -~ ii -middot J4JIIO middot 1710 5710 t- middot -middotmiddotu middot F tMO middot _-middot~ -middotmiddot _ - middot middot 121100) -middot~~ lllwr bull -middotmiddot _-~ ~~-middot llhll

-~ 121

0

-middotmiddot bull47111 -middotmiddot bull 1JOU

bull

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bull middot lktt -ted bf I-cor

OlOIHIIIGCICMfiiU Df0 middot 61 5Z90

- - -UIUI1

TH IIIIIDaiB BII llllli lillalll shylmLI

llllll llllll ~e 1U1illl - 1iillll2 shy

llllillDIR llilllll jAl181_ wooo 3Z7D 1JCll middot 5JOU

M 1JCll_ n M~ 195111 245 0 nbull

leryllhbull middot ig Cllclbull -~ 401000 416000 middot -~ ii -middot J4JIIO middot 1710 5710 t- middot -middotmiddotu middot F tMO middot _-middot~ -middotmiddot _ - middot middot 121100) -middot~~ lllwr bull -middotmiddot _-~ ~~-middot llhll

-~ 121

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bull

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bull middot lktt -ted bf I-cor

OlOIHIIIGCICMfiiU Df0 middot 61 5Z90