Laserfiche WebLink
Hess-Dubois Cleaners, Stockton - 5 - 21 March 2023 <br /> Table 3 — Historical and Recent Non-Petroleum Hydrocarbon Results in Groundwater <br /> (Results in micrograms per liter [ug/L]) <br /> Well / Most PCE TCE cis-1,2-dce VC <br /> Screen <br /> Zone Recent Hist. Hist. Hist. Hist. <br /> Interval Sample Max Rec Max Rec Max Rec. Max Rec <br /> ftb s <br /> MW-1 34-54 1 Q21 <1 <1 <1 <1 <1 <1 <1 <1 <br /> MW-2A 34-54 1Q18 1.3 <1 0.55 <1 <1 <1 <1 <1 <br /> MW-3R 35-55 2Q13 <1 <0.5 1.6 <0.5 65 <0.5 50 <0.5 <br /> MW-4 30-50 1Q21 5.6 3.41 1.2 <1 6.63 6.63 <1 <1 <br /> MW-5 30-50 1 Q18 3.5 <1 1.9 <1 1.8 <1 <1 <1 <br /> MW-6 25-45 1 Q21 650 218 510 66 860 27.9 200 <5 <br /> MW-7A 25-45 2Q03 180 22 11 1.1 <5 <1 <5 <0.5 <br /> MW-8 20-40 1 Q18 <1 <1 <1 <1 <1 <1 <0.5 <1 <br /> MW-9 20-40 1Q21 <1 1.04 <1 <1 <1 <1 <0.5 <1 <br /> MW-10 20-40 1 Q18 510 198 470 174 1,000 79.6 210 <1 <br /> EW-1 20-45 1 Q21 -- <1 -- <1 -- <1 -- <1 <br /> Water Quality Objectives 5.0 5.0 6.0 0.5 <br /> PCE= tetrachloroethylene; TCE= trichloroethylene; cis-1,2-DCE= cis-1,2- <br /> dichloroethene; VC= vinyl chloride; Hist Max= historical maximum; Rec= recent <br /> If you have any questions or concerns regarding comments in this letter or regarding the <br /> Site, please contact Alan Buehler at (916) 464-4615 or by email at <br /> alan.buehler(a�-waterboards.ca.gov. <br /> Alan M. Buehler, P.G. *GalvVinffman, P.G. <br /> Engineering Geologist Senior Engineering Geologist <br /> < CS\pNAL G,6,, `0 <br /> C RIC LC K O'l�ci <br /> 4 ALAN M. BUEHLER <br /> No.9340 i 4C 9542 <br /> OFCNJ_ or CA <br /> cc: Jasleen Singh & Brian Millman, Advanced Geo Inc., Stockton (email) <br /> Joe Salazar, Lewis Brisbois Bisgaard & Smith LLP, Sacramento (email) <br />