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site Background
<br /> Canepa,s Car Wash,park Street
<br /> Page 5 of 6
<br /> ve laboratory reported detection limps 11, nd MW-3,
<br /> collected from M
<br /> BTEX constituents were not detected at or acentrb o m MW-2, and at relatively elevated concent ons
<br /> BTEX constituents were detected at to eco llected from
<br /> In the samplest ret and MW-5' at concert
<br /> B l MW-2, Nl
<br /> at moderate concentrations 111, G was detected In 1XN-
<br /> in the sample from Mw_ res ectively
<br /> of0I1, 5 5, 02, and 48ng/L, Q
<br /> gfL in
<br /> MTBE was not detected at 5
<br /> that MTBE was detected at conlentrations of 8 S and 5 P
<br /> Laboratory analytical results indicated W_1 and MW-2, respective y le collected from M�'t
<br /> the groundwater samples collected froth M In the groundwater sample
<br /> 040 µP,/ -
<br /> n elevated detection limit of 1= as inconsistent with historical results and the d h�dt8�60a limit The
<br /> above a d for MTBE by EPA M les from
<br /> Because the result for the M -2 sample w
<br /> s were reanaly� was not detected m the s�rrlp respective
<br /> The
<br /> the MW-5 limit was elevated, the sampleresp
<br /> of the EPA Method 8260B analyses indicated that Mlimits of TBE5 arid 119 , were geneially
<br /> results reported detection
<br /> etectio lle ed on January 2$ 004
<br /> MW_2 or MW-5 at or above the iabarao water sarripies ca
<br /> laboratory analytical results of the gr sults
<br /> consistent with historical monitoring of all well screens during
<br /> the January 2004 monitoring
<br /> he monitor wells was approximately 27 88 feet below
<br /> the
<br /> The groundwater table remained above the top reviaus quarter
<br /> th to groundwater int 28, 2004, 0 39 foot shallower than tenerally toward the
<br /> event The average m oints on January oundwater gradient was g
<br /> surveyed Fell collar measuring p
<br /> The groundwater elevation contours
<br /> n u siunicated t gradhexitsgranalytical
<br /> e laboratory
<br /> northeast, consistent with his ay 10, 2Q04 Th
<br /> groundwater monitoring activities were conducted�aMW 6, and MW-7 Indicated that
<br /> BTEX
<br /> Quarterly s collected from MW-
<br /> results for the groundwater sampleTe orted detectlon limits in those15 and MW-3, at
<br /> les collected from M
<br /> constituents were not detected at or above laboratory p y2 and centrations at relatively elevated conceritratioris m
<br /> constituents were detected atample collo d from In tMWamr2 MW+3, and MW-
<br /> 5 at concentrations of
<br /> moderate concentrations in theP W_1,1VIW
<br /> le from MW-$ TPH-G was detected iii M
<br /> the samp respectively 16,000
<br /> 0 09, 5 4, 0 13, and 50 mgt, 1V1W-3, and
<br /> concel1 MW-2, ,
<br /> dicated that MTBE was detectedodea ed from MW-s=of 4 u groundwater
<br /> analytical results m in the groundwater samples co Iii the
<br /> Laboratory and 7,000 limitMW�3,and
<br /> 140 ��L MW-2,
<br /> �tg� MTBE was not detected at or above
<br /> the results for the MW-1 by
<br /> ectively EPA
<br /> MW-5, resp -4,MW-6,and MSN-7 B les were reanalyzed for MTBE ec
<br /> samples collected from Mw was not detected in
<br /> the samples
<br /> MST-5 samp analyse indicated that MTBE
<br /> les were inconsistent with historical TeS0 ts, the laboratory reported detection limoiundwa�r
<br /> ethod 8260E The results of the
<br /> EPA Metho at8o rah ve ty in the g
<br /> Nl 2 MW-3, and MW-5 les collected on
<br /> the samples from MW ectively MT$E Was detected at a concentration of
<br /> samp
<br /> 5 0, and 50 �9/L, resp analytical results of the gr
<br /> W The laboratory results
<br /> sample collected froth M event
<br /> May 10,2004 were generallyconsistent with historical monitoring the May 2004 monitonng
<br /> y
<br /> groundwater table remained above the tap of all well screens during carter The
<br /> roximately 27 30 feeTevious t below q e surveye
<br /> The grow tli to groundwater in the monitor wells was app
<br /> Tlie average depth 10, 2004, 0 58 foot shallower d nt the
<br /> generally toward the
<br /> easuring points on May oundwater gr
<br /> well collar m adreno
<br /> groundwater elevation contours
<br /> historical groundwater t gradients granalytical
<br /> northeast, consistent wit July14, 2004 The laboratory
<br /> from MW-4, Mw-6, and MW-7 indicated that BTEX
<br /> groundwater monitoring activities were conducted on
<br /> Quarterly groundwater samples collected
<br /> results for the gr
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