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Stockton Waterfront Phase Il Environmental investigation Report <br /> Weber Block <br /> Brownfields Project FINAL <br /> Table 3-3 <br /> Summary of Analytical Results for Groundwater <br /> Exceeding Primary Maximum Contaminant Levels (MCLS) <br /> ... ....... .... ..... :. ... .i:.:. r a+ iY.: - rwe.to a <br /> - .,::-•..�. :._ ..saC (..,.<::: 4 ,-,.r-:r. > >.,,;7 ` ','..`i f �; �..�='•3:r ��*.. ...G�_ �� ,p-- � � . ..,., ' <br /> g�y�j Cy} �y `' pJ} �My/. <br /> __�e °�=,S' ;{`.;.: i�� "•iW,'... 1tl r.Yi>- ,'RGOtil it a�'�`'Al1 to Lt ..^. Jfedfr�l <br /> Iii . le S le. .G`1mound ,Pe: : :;, ., <br /> ,4'.'-.. ..,i�. E.s -'°,X.£ y. :._y�' <br /> § <br /> Boit: # �E�teeeditt MCIs )k, VICL ,x 1� L , g P , x <br /> L60tion <br /> I'Men C> try r <br /> GW3 WB-GW3 Aluminum 1 2890 1000 NA <br /> Lead 75.3 15*** 15*** <br /> GW4 WB-GW4 MTBE** 53 NA NA Exceeded California State Action Level for Toxicity(35 ttgfL). <br /> Exceeded US EPA Drinking Water Advisory(20 ltg/L to 40 <br /> lig/L) <br /> Benzene 300 J 1 5 Result is estimated due to high <br /> analyte concentrations. <br /> Vinyl Chloride bl J 0.5 2 <br /> 1,1-Dichloroethene 13 J 6 <br /> cis-1,2-Dichloroethene 120 J 6 70 <br /> NA: Not Applicable. <br /> J The analyte was positively identified;the associated numerical value is the approximate concentration of the analyte in the sample. <br /> • No compounds for samples collected from locations GW l and GW2 exceeded MCLS or other established regulatory standards for groundwater. <br /> •* MTBE: methyl tert-butyl ether;no Cali£omia or federal MCLS have been established. <br /> **+ Not an official MCL. A treatment technique and a public notification triggered at an action level of 15 ppb. <br /> Note: Groundwater samples were collected on April 20,1998. <br /> Note: Only those compounds identified above their MCLs are presented in this table. No samples exceeded their Contract Required Quantitation Limits(CRQLs)for <br /> Thallium;1,4-Dichlorobenzene;Hexachlorobanzene;Pentachlorophenol;and Benzo(a)pyrene;however,the California Primary MCLS are below the CRQLs for <br /> these compounds. <br /> Note: Laboratory reports are included in Appendix B. Sampling locations are shown on Figure 3-I. <br /> Funded by a Brownfiields Grant from EPA 1d <br /> M36210Thse2rptl1b1s2.wpd-November 1998 <br />