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Moore,Petroleum January 23, 2012
<br /> rte. : -
<br /> Site History/Assessments ''
<br /> In August 1998, groundwater contamination was identified during subsurface monitoring. To
<br /> date, 19 monitoring wells have been installed and.monitored regularly. A Site'map showing the"�
<br /> location of the former USTs,'monitoring wells"and groundwater leve_ I contours is provided at the,
<br /> end of this five year summary-, M
<br /> 1�..� �+ ;.i.4 rt .ysy
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<br /> E ..7t ,. .. €, ir^''.,'i;,tyt Ii
<br /> Remediatio¢ n Summary '
<br /> • Free Product: Free product'noted in''MW-10, none recently
<br /> • Soil Excavation: An unknown volume of impacted soil was'removed-and disposed Y' �
<br /> `1 ay->
<br /> offsite in July 1992 '?hi- _41L
<br /> In-Situ Soil Remediation: Soilvapor'extraction, conducted from`November 19951hrough
<br /> - ,-' April 1997 and June 2002 through June 2009, removed 7,802 pounds of,TPHg ,4-_-�►
<br /> • Groundwater Remediation: Ozone sparging, conducted February 2005 through'.._,.-,;
<br /> 4th Quarter 2007" '
<br /> •l_J q t...; _ ..�,4 .r .. f* r�.I reT ..d;T .., r+1_.. '" ,*'4 � �f. :'' .`.:' $ :4w i•..�L.,► . . .
<br /> t` ral- Sit -o "`. , -..• y w t x.,t.r•. 'F. �' " - F. is a,a'.r•. x } `. N)I:1.•t,T.. '� V-4
<br /> derie' e Criditions
<br /> •,' Geologyand H dro eolo ` The Site is underlain b interbedded'and intermixed sand,}'
<br /> ,Y, 9 gY� Y ,, /
<br /> silt and clay. The depth-to groundwater is approximately'11 feet bgs and the.,
<br /> groundwater gradient is northeast at approximately 0.002 feet per,foot
<br /> • Groundwater Trends: There are more than 25 years'of groundwater monitoring`data for
<br /> } "r this Site. TPHd trends,are shown below, source area (MW 8) and down gradient;;
<br /> (MW-12) ,� r
<br /> z,
<br /> IyTV. #
<br /> DIESEL RANGE ORGANICS Results for MW-8 "
<br /> 400.
<br /> 350
<br /> , - ., . r -'-., �'� __.�._.__ _ _ I - _._ - ,- fir, `, • �',
<br /> 150
<br /> 100 j j•r .• ww.� _ X-I
<br /> VIVO
<br /> 60+ ��.'..:cc 1•r r �.wr.rw„n.•m :�-,.+ a•.~ �a+A't�'f` fT.w .•: i ."�
<br /> ++.DIESEL RANGE ORGANICS �MTrbntl' a "'r '~ i?!• y '' '
<br /> DIESEL RANGE ORGANICS Results for MW-12
<br /> 0.9
<br /> ' '', ' O.S r._,._R..- .._.fi...—. -•�.• o-__._..._._^'4"_,..—•.--__.j_..�.__--, •y - ,
<br /> 0,61
<br /> 0.4
<br /> 1
<br /> .. 02,
<br /> O
<br /> ���•...DIESEL RANGE OROANn d '
<br /> r
<br /> Risk Evaluation :y
<br /> 'In January 2011, a soil vapor extraction and human health risk assessment was conducted and
<br /> concluded that residual hydrocarbons present.no additional risk to public health. There are no
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