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described in C , B"ett Petrol"M(419 S. Site History
<br /> and Interim Reondor s�4ddition l Grorrnrhvater Investi Main st.,M
<br /> mediation Pum 9 of I )
<br /> P Test Re kation, Page 9 of 10
<br /> pis Part, dated jarnua Onitor Well Desi
<br /> November 26 rY 30, 2004. ruction and Installation,
<br /> groundwater sa 2003, a Condor
<br /> mples for MTBE representative was on
<br /> MW-6 through MW_11, and E laboratory analysis from site to measure insufficient water colo W-1' e water levels
<br /> or sa tun for sampling.Monitoring well 1VIW_6 to
<br /> wells My}�_2 and collect
<br /> rnpled during the Noverbe 2003Due to an error b as dry, and ' MW-3, wined n
<br /> MTBE was detected ' Y the Feld technicMW 2 and MW-7 contained an
<br /> EW-I. The Iaborato m the groundwater samnitoring event. Laborato iarr, MVir_
<br /> in the yticaI results indica ed a slight ected fro ' anal $ was not measured
<br /> groundw ,he
<br /> m AM-4R'
<br /> analytical results indicated
<br /> October atcr sample collected fro ' MW-9, tvf that
<br /> 2003 Det m MW_ ght increase in the concentration o f ' MW`I I= and
<br /> feet on None p h to water measure � relative to the MTBE detected
<br /> tuber 26, 2043 The meets indicated that the he previous sam
<br /> concerns regarding extremel piing event conducted in
<br /> have been residualthe reliability of water y low groundwater levelgrOS In endvuater elevation was 12.44
<br /> groundwater groundwater level measurements monitorin
<br /> gradient of Ponded in the ca , the water level in MW_g 'ells prompted
<br /> monitoring wells �_3 0.0315 ftfft towards the sou h at the mase well casing.and MW 7
<br /> west was calculatedmay
<br /> ' MW�R, and MW_IOAn estimated
<br /> On December 31 using water level data front
<br /> groundwater sam 2003, a Condor representative
<br /> Laborato tiles from monitorin was an site to
<br /> from Marralytical results indicatedthat MW- measure water levels and
<br /> samples colleted fro7, MW-9 E was MW-4 � collect
<br /> MW_10 1 BE was detected Mw 6 through MW-I I
<br /> rrr IyrW_ , MW-I I, and EW- in the groundwater s , and EtV_1,
<br /> samples collected 7' MW-10, and l- TAME arnPles collected
<br /> on November 2b from MW-4R and MW_ MW`I I. The c �'as detected in
<br /> the MW-I 1 ' 2003. The concentrationlo(increased relative to the of 1ldTBE in 'he
<br /> and EW-I decrea MTBE in the Previous sa groundwater
<br /> by 1.70 feet relative sed relative to the gr°unclwatr mplinent d
<br /> measurements to the previous previous samplin samples colt ted fraCanducted
<br /> gradient of 0• generally indicated a monthly us
<br /> g event. Groundwater elevations Increased
<br /> 0057 Rift taw 'groundwater ilow g event (November 2003
<br /> MW-2,A4W-6, and A4 8." arils the earth was calcul direction
<br /> ctiu.in ;o the north ) Static water level
<br /> g are, level data
<br /> estimated groundwater
<br /> On March 4, 2004 to from
<br /> a Gondar re monitoring wells
<br /> samples from monitorin Presentative u,
<br /> analytical re b wells I�qW_ as on site to
<br /> sults indicated 2, MW_ measure water levels
<br /> TAME, and TpH-G that BTEC constiueMW�R, MW_6 throe and colied
<br /> groundwater were not detected constituents gasoline ox through MW-I I, and EW_ groundwater
<br /> samples collected fro at or above Ygenates/additives other than, Laboratory
<br /> samples collected from m the the Iaborato
<br /> groundwater sam m MW- monitoring wells. �' Teported MTBE and
<br /> plc collected fro MTBE was detection limits
<br /> collected from , UW M rhrough MW I I detected in in the
<br /> event conducted W-3' MW-4R g, -10 The concentration sof d TB the groundwater
<br /> ori Deee , MW MTBE . TAME was detected in the
<br /> collected from IOW_December 32, 2003. 10' and E�y_I increased relative tothere
<br /> The concentration groundwater samples
<br /> Groundwater 7' MV4T-9, and MW_
<br /> 2003). elevations increased b I I decreased of MT$E in the P vrous sarnPling
<br /> An estimated Y 1.56 feet r relative to groundwater saris
<br /> 'water level data from grotendwater relative to the the previous tiles
<br /> monitoringadient of 0.0048 ft/$ Previous monitorin Sampling event
<br /> wells lViVir_ towards the no g event
<br /> On .lune 24 2' MG-6, and MW-8. rtheast ate using
<br /> 2004, a Condor re was calculated
<br /> .,u:-].y f u„: presen using
<br /> mo^ituri; rr ,t.Art� �����representative
<br /> analytical results indicated that$TI~X N. 1;t,1 q s on site to measure
<br /> TpH_ , .•_..-3, A41V_gr� n r��r_6 rh,�wa water IeveIs and collect
<br /> G were not detected constituents, ' ..i• - oundwater
<br /> at ar above the Iaborato gasoline ox " a.. '`'f;�'_1 weer EIV-1
<br /> laboratory reported detection Iimrin es Other than r Mho�ty"'
<br /> QBE, and
<br /> the groundwater samples
<br />
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