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ab = = = = = M = 4r
<br /> TABLE 3-4
<br /> OLDER GROUNDWATER ANALYTICAL DATA(1987-1992)
<br /> CALTRANS SHOP 10
<br /> STOCKTON,CALIFORNIA
<br /> TQC Depth to Groundwater TPHg TPHd Benzene Toluene Ethylhenxene Total MTBE
<br /> Well 10 Sample Date Elevation Groundwater Elevation PH (Y�) Benzene
<br /> (�} ��} Xylenes TB
<br /> feet bgs feet bgs feet msl
<br /> MW-1 1987 154,000 NA 14,700 25,300 2,500 9 800
<br /> MW-2 1987 210,000 NA 19,900 38,800 4,000 15,900
<br /> MW-3 1987 231,000 NA 25,700 36,70001 2,7000 12 300
<br /> MW4 1987 174,000 NA 21,200 26,100 1,300 10,600
<br /> MW-5 5110190 10055 5795 4260 ;' �, NA ;11w > , Y V1; <u�` ' �„
<br /> MW-6 5110190 9971 5795 4176 NA #,
<br /> MW-7 514190 10000 5078 4922 � w NA 1 5 } mss : 57 $ }ka?? 5 Y
<br /> MW-7 5117191 10000 6450 3550 NA
<br /> MW-7 417192 2103 6528 4425 � nY �'��� � _' ' �„� � ` v ``��`�•� ��� `v {�
<br /> MW-8 5111190 100 36 59 89 40 47 1 900 200 5 1 07 22
<br /> MW-8 5117191 10036 6474 3562 002' { € }
<br /> MW-8 417192 2135 6556 -4421 z N` � k 057 ,L� �u ;
<br /> MW-9 5110190 10087 6042 4045 3,400 60 80 k? 170
<br /> MW-9 5117/91 10087 6534 3553 2,100 310 10 1 7 32
<br /> MW-10 417192 21 87 6626 -4439 5,600 18 920 460 38 520
<br /> MW-1 1 417192 2137 6594 -4457 420 M I => 33 068 037 064
<br /> MW-12 48192 2123 6586 -4463 "` �# 1 z u � � ;{
<br /> number of samples 17 4 1 17 17 17 17 0
<br /> Mwomum 231,0000 250 25,7000 38,800 0 4.0000 15,9000 -
<br /> Minimum 15 00 180 0115 015 015 0115 -
<br /> nth Mean 46,0353 '192 4,8839 7,4933 620 2 2,9027 -
<br /> 5td Dev 1 84,9547 1 116 9,0744 14,1847 1,2423 5,4173 -
<br /> n-1(0 05) 166 166 166 166 166 166 -
<br /> 96 UCL 80,2388 288 8,5373 13.2042 1,120 3 1 5,0838 -
<br /> Notes
<br /> Numbers in bold and shade are 112 the detection lima
<br /> TPHG=Total Petroleum Hydrocarbons as Gasoline by EPA Method 8015M
<br /> TPHD=Total Petroleum Hydrocarbons as Diesel by EPA Method 8015M
<br /> BTEX=Benzene,Toluene,Ethylbenzene,and Total Xylenes by EPA Method 8020
<br /> MTBE=Methyl Tertiary Butyl Ether by EPA Method 8020
<br /> TOC=Top of casing elevations
<br /> — =Not measured,sampled,tested,or present
<br /> All measurements are presented in feet
<br /> pg11=micrograms per liter
<br /> Page i tab3-4218!99
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