Centra l Main e Powe r 

### Ma y 11,200 9
Mr . Terrence Connelly Offic e o f Sit e Remediation an

dRestoration U.S . Environmenta

l Protectio n Agency 1 Congres s Street, Suit

e 110 0 (HBT ) Boston , M A 02114-202 3 RE : O'CONNO RCOMPAN Y SUPERFUN D SIT E INSPECTIO N REPOR

T - Apri l 200

9 Dea r Mr . Connelly : Enclosedi s acopy o f

th e inspection o f

th e O'Connor

Compan y SuperfundSit

e carrie dout

o n Apri l 23 , 2009 . Thi s inspectio n wa s conducte

ddurin g th

e monitorin g wel l sampling activitie s undertake n a t th e sit e an di n accordanc

e wit h th e draf t Operation s an

dMaintenanc e Pla

n date d Jun e 2008 . I n genera l th e sit e wa s foun dt o b e i n goo dconditio n wit h on e small are

ao f erosion observe

dj u outsid e th e DesignatedAre a(DA) , approximatel y 2 5 fee t downslop e o f

D A marke

r PTC . Th

e erode dare aoccurredaroun

dalarge rock

i n th e cove r soil , an dwa s approximately 2 to 8 inche s dee p (deepes t wher e th e rock wa s removed) . Th

e rock wa s removed , an

dcove r soi l backfille di th e erode darea . Ther

e wer e als o som

e signs o f beave r activity i n th

e uplandmarsh . I f yo u hav e an y question s o n thi s inspection , please contac t me . Sincerely . Ro y f . Koster , P.E . Project Coordinato

r Enclosur e cc : Claudi aSait , MDE

P A n equa l opportunit yemploye r 8 3 Ediso n Driv e I Augusta , M E 0433 6 te l (207 ) 623-352 1 www.cmpco.co m A n Energ yEas t Compan yInspector :

Weather : 

## O'Conno r Inspectio n Checklis t Date : Time : 

# CX>

f MONITORING/OBSERVATIO N WELL S Wel l Lock s Wel l Casin g Conditio n Erosio n Comment s M W 104 B 

# Gncr

t M W 106 A 

# X M W 106 B M W 50 1 

# X M W 50 2 

# X Good M W 50 3 

# X Coo J M W 507 A M W 508 B 

# V O W 201 B O W 202 B O W 302 B RW 10 1 

# Q>oo

d Follo wU p Actio n Required :

05/11/200 9 •

## Designate d Are a BoundaryMarker s Conditio n Comment s PTA PT B PT C PT D PT E PT F PT G PT H PT I 

# 3

Z PT J Follo w U p Actio n Required :



## Surfac e Soil s

CONDITIO N LOCATIO N (MAR KO N ATTACHE D MAP ) Excessiv e Settlemen t - Pondin g Erosio n Rill s Vegetatio n - Stresse d o rSpars e Animal Burrow s 

# A3 \(\ ai^< xerosion * o o 

# /Ofr i 

# J O |f t Tre e an d Shru b Encroachmen t o n Designate d Are a 

# lO I ft

05/11/2009

## Acces s Roa d Featur e Conditio n Comment s Excessiv e Ruttin g 

# k Erosion , Sloughin g o f Shoulder s Othe r Follo wU p Actio n Required :



# CULVERT S AN

D SURFAC E DRAINAG

E Locatio n Conditio n Comment s Uplan d Mars h Culver t - Primary Uplan d Mars h Culver t - Overflo w Uppe rLagoo n Culvert Outle t Swal e Uppe rt o Lowe rLagoo n Lowe rLagoo n Culvert Outle t Drainag e Lowe rLagoo n t o Rigg s Broo k Follo wU p Action s Required :



## UPLAN D MARS H AN D LAGOON S Locatio n Featur e Conditio n Comment s Uplan d Mars h Sid e Slope s 

## Goo ?

Vegetatio n Uppe rLagoo n Sid e Slope s

Vegetatio n Lowe rLagoo n Sid e Slope s

Vegetatio n Follo wU p Action s Required :

05/11/2009

## OTHE R OBSERVATIONS/RECOMMENDE D ACTION S



## f^<wo\^ d\^ra<

e roc\ C \r \-eroded * OKa , oav ) -^1(^( 3

[^CHEC KHER E I F ADDITIONA L INFORMATIO N I S ATTACHE D f KcHt) S Inspector' s Signatur e ^V^MJ? ^ (^JU M Date : M ^^(o ^

05/11/2009SUPERFUND V \ \ \ \ l

J \jfr- '

## «\_>^: \

/ / i S 

## W . •• —• N 

### YT>P^*]V*I^ 9GNAIE D ARE A % '~~-V2i****^^, ^ * vt \

0 I / -PTI I —REVISE D Iti—^lpE D DESIGNATE D ARE A

SIT E BOUNDARY 

# li/// / \ \ ic\ o / fii i

/ \l V* . _

. " / UJ»LAND.*IAT?S H i



# X 

# +

PT A 

# m p < \ \ \ \f f \\\ \ i 1 M \ *»\\ \

' -o-s S

\ I



### ' rK^

<• —' \\\ \ ~ - H~ \ 

### • — f J f/f t 

# Kftli / M i / / / / / FRE E PRODUC T OI L MONITORIN G LOCATIO N

LON G TER M MONITORIN G LOCATION-SEM I ANNUA L LON G TER M MONITORIN G LOCATION—ANNUA L MONITORIN G WEL L PIEZOMETE R UPLAN D MARS H GEOPROB E BORIN G LOCATIO N SURFAC E WATE R SAMPLIN G LOCATION S DESIGNATE D ARE A MARKER S - SURVEYE D B Y EPR O 200 2

—SCR A 199 7 DESIGNATE D ARE A REVISE D 10-SIDE D DESIGNATE D ARE A

—SUPERFUN D SIT E BOUNDAR Y UQJE L TOPOGRAPHI

C INFORMATIO

N I S APPROXIMATE

. TOPOGRAPHI C INFORMATIO N HA S BEE N COMPILE D FRO M ORIGINA L SIT E PLA N AN D 199 9 SURVE Y O F REMEDIATE D ARE A / > —~ . t i t I I ii/' n i ; , ' i i i / /

in/f t \ / i ; i i / ii mi s \ \ ' '// / " I _ wo" /

\ \\ \ V e
ROUTE 17 / Tn AUGUSTA 6 

# jin n <M#U b / "* 5 U * 1 i i ( / s /

\\\\ \ 1 X \

i I /( I * i

- t PSi c I ROCKLAN D l J? 7 " > / f T « j ( ^ T O ^OCKLIN D I \ 5 ^

i 

# fi i
4 

# J

z

Q L d 1 0

S 3 o Q y U z D =
o ( n « b

JO B NO : 2120CK.0 1 DATE : JUN E 200 7 SCALE : A

S NOTE D FIGUR E 4- 1O'Conno rSit e Apri l 200 9

Phot o 2 - Uplan d Mars hO'Conno rSit e Apri l 200 9

Phot o 4 - Lookin g towar d Rigg s Broo k CulvertO'Conno rSit e Apri l 200 9

Phot o 5 - Lookin g towar d norther n Rigg s Broo k

Phot o 6 - Beave rActivit yi n Uplan d Mars hO'Conno rSit e Apri l 200 9

Phot o 7 - Erode d are a prio rt o replacemen t o f soi l