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WL K W M W W ft M L—L M W L�-& M M U& N& w"' wAL' =a' <br /> Stockton Waterfront Phase 11 Environmental Investigation Report <br /> Brownfields Project Weber BlockFINAL <br /> Table 3-3 <br /> Summary of Analytical Results for Groundwater <br /> Exceeding Primary Maximum Contaminant Levels (MCLS) <br /> S <br /> M- <br /> I ht Wit btf" Ji� <br /> V. <br /> GW3 WB-GW3 Aluminum 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 µgfL). <br /> Exceeded USEPA Drinking Water Advisory(20 pg/L to 40 <br /> vg/L) <br /> Benzene 300 J 1 5 Result is estimated due to high <br /> analyte concentrations. <br /> Vinyl Chloride 61 J 0.5 2 <br /> 1,1-Dichloroethene 13 J 6 7 <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 /> LNo compounds for Samples collected from locations GW I and GW2 exceeded MCLS or other established regulatory standards for groundwater. <br /> 'MTBE: methyl tert-butyl ether;no California 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[heir Contract Required Quantilation Limits(CRQLs)for <br /> Thallium; 1,4-Dichlorobenzene;Hexachlorobenzene;Pentachlorophenol;and Benzo(a)pyrene;however,the California Primary MCLS are below the CRQLs for <br /> these compounds. <br /> LNotc: Laboratory reports are included in Appendix 13, Sampling locations are shown an Figurp.3-1. <br /> Funded by a Brownfields Grant from EPA <br /> N:U62 1OThse2tpt%1b1s2.wpd-November 1998 <br />