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DRAFT <br /> �1 . <br /> Location 917-09 U <br /> Location 917-08 , Screen Interval(ft bgs) 18-28 Screening . <br /> Screen Interval(ft bgs) 18-28 Screening Groundwater Elevation(ft msl) -7.18 Level <br /> i <br /> Groundwater Elevation(ft msl) -7.02 Level _ Sample Date 9/16/2021 <br /> Sample Date 9/16/2021 TPH(C28-C40) <160 <br /> TPH(C28-C40) <160 — GRO(C6-C12) 110 760 <br /> q GRO(C6-C12) 38 J 760 DRO(C10-C28) 561 200 <br /> DRO(C10-C28) 811 200 Benzene <0.08 1.0 <br /> Benzene <0.08 1.0 Ethylbenzene <0.084 30 <br /> Ethyl benzene <0.084 30 Toluene <0.095 40 <br /> Toluene <0.095 40 917-08 m,p-Xylene <0.27 <br /> m,p-Xylene <0.27 o-Xylene <0.14 <br /> o-Xylene <0.14 i Naphthalene <0.48 0.17 ` <br /> Naphthalene 1 <0.48 1 0.17 1 <br /> •w. i <br /> Location 917-07 r <br /> 1K _ Screen Interval(ft bgs) 18-28 Screening 917-09 <br /> '++ ' ,r— ►�� .•jr•• .4,S'. SS-8176-06A <br /> r" +.Groundwater Elevation(ft msl) -7.13 Level <br /> Sample Date 9/16/2021 i • <br /> TPH(C28-C40) <160 SS-81713-07A <br /> - <br /> GRO(C4-C12) 160 760 917-07 <br /> , `-i•� .� �_. moi _, ; DRO(C10 C28) 73J 200 <br /> •. . - � _ .� , Benzene <0.08 1.0 ` <br /> A Ethylbenzene <0.084 30 <br /> _ ';�' � �}� � � i �', �� y '•Toluene <0.095 40 917-13 <br /> '+w 1 m,p-Xylene <0.27 =_ -3. Location 917-14 <br /> MOIL I o-Xylene <0.14 Screen Interval(ft bgs) 18-28 Screening <br /> + Level <br /> + Naphthalene <0.48 0.17 917-14 <br /> Groundwater Elevation(ft 9.48 <br /> f -�•• ~ _ 'r Z Sample Date 9/16/2021 <br /> ••� �• _ - r ■ r• TPH(C28-C40) <160 <br /> GRO(C6-C12) <15 760 <br /> DRO(C10-C28) <48 200 <br /> Benzene <0.08 1.0 <br /> J Ethylbenzene <0.084 30 <br /> Toluene <0.095 40 <br /> m,p-Xylene <0.27 <br /> ' o-Xylene <0.14 <br /> • Naphthalene <0.48 1 0.17 <br /> Legend Notes: All data posted are from the 2021 Rough and Ready Island Annual UST 8178 Deep Groundwater Monitoring <br /> Pro d Soil and Grab Roads <=compound is below method detection limit Groundwater Monitoring event. Well Locations and Anal tical Data 12021 <br /> ose <br /> } p ft bgs=feet below ground surface Detections are displayed in bold font. y ` <br /> Y Groundwater Sampling Location ft btoc=feet below top of casing -All results are posted in micrograms per liter /L N Port of Stockton, Rough&Ready Island <br /> Former Building Structures p 9 p (pc > <br /> g DRO= Diesel range organics -Yellow highlighted results exceed the San Francisco Regional Water Quality <br /> Existing Monitoring Well Location 0 Former UST GRO=Gas Range Organics Control Board Enviornmental Screening Levels for MCL Priority(Table GW-1) Stockton,California <br /> 1 TPH=Total petroleum hydrocarbons 2019,rev.2.Where both cancer risk and non-cancer hazard <br /> (sampled and gauged annually) ( exposure levels) <br /> Former Excavation Area UST=Underground Storage Tank were available,the more stringent level was selected. GeOsynteC Figure <br /> Existing Monitoring Well Location Blue highlighted results are non-detects where the detection limit exceeds the <br /> (unable to locate) Approximate Groundwater screening level. consultants <br /> Flow Direction -Aerial image source:Google Earth Pro,August 2019 5 <br /> 0 so <br /> Feet WR2501B March 2022 <br /> \\oakland-01\data\GIS\Port_Of_Stockton\Rough-and-Ready-Island-PM\Project\USTs\2022-02_Building817B\Fig05_DeepGW.mxd 3/2/2022 3:51:53 PM(Author:KWalton) <br />