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<br /> E Tt O 94 Gas Station X# y <05
<br /> ca E r - X0 5 TPWO _`'<5D� SJdewalk l
<br /> +� of x <0 5 MTBEk��<5
<br /> JPH-G; X440 i
<br /> o MTBE v 360
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<br /> bHp-1 \
<br /> �1
<br /> LD HOLD1zIVE
<br /> 6ENJAMIN T
<br /> - 13f 13 ; x = <05-'
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<br /> E 36 _ T ,<05
<br /> B p' <0 5 5`
<br /> cn 7PH•G 750"4 E - <0_51", Sidewalk x <d 5 BHp-2
<br /> is MTBE n ,1900 X - <0 5 TPN,G „ I.<503
<br /> w 5 s <O 5 TPH G <50F MTBE{ - <5
<br /> MTBE-;7 <5
<br /> E - <0 5 E-9
<br /> X 3 -�<05 0 E-10 *Y-3 -v
<br /> TPH-G- X50 v +�♦ r
<br /> MTBE£ - <5_� Y- * ! ♦ _< 1 - Story —�
<br /> MW-1 r pump 5-1 0 ♦ i ReSidentFal Legend
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<br /> Islands l ♦ o Hou5cng E_3
<br /> block 5-2)5Groundwater Monitoring Well
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<br /> Wall —� j % --A MW-2® Dual Purpose Sod Vapor Extration/
<br /> 13 V-12 Z Groundwater Monitonng Well
<br /> �<O 5 !'�
<br /> 0
<br /> <05 / j V-1 I �' Y F -'�� V-101* Dual Completion Soil Vapor Extraction/Air
<br /> E E u- <O 5` 5-8 p 9 g Well
<br /> � X � <O 5 E-12 1 1 E } - <05,
<br /> TPH-G' <50 101 1 B �- 2,4 1 X -< <0 5i
<br /> *' 1 4 TPH=G -',<50
<br /> �R Recovery Well
<br /> L MTbE <5 5-8 T - O 9f
<br /> o u- 1 k 5- MTBE - <5q b, - 13
<br /> E _ n 2 7 s i � V-1� 5oil Vapor Extraction Well
<br /> Z O B - ,17 1 X - �',f 2 6 ` ! 1 E-5 T' - 4�
<br /> T j - 0<5 1 TPHG` 200 1 E-8 E ;- 2 4
<br /> � 1 � V_4 5-1� Air 5parging Well
<br /> E - <5 MTBE,- 24 X, _ -_054
<br /> X; - 260 1 E-6 —�-,V'6 O ` TF'H-G ,1,000 Existing Groundwater Extraction System
<br /> TPH G,- 2,400 MW-2 r 5Q b '} 83 b Benzene.Micrograms Per Liter(ug/L)
<br /> MTBE - <50y ~T�— n - T_ 78
<br /> B #<D5 1 5-3 aT n, 10 E-3 y E -;'�63 T Toluene, ug/L
<br /> 1 � = 41 5-4
<br /> E Eth lbenzene, u /L
<br /> T `<D 5, X ^28 ■� 7E-4 X { 'z ,4 76 t X X lene, u /L g
<br /> E <0.5" MW-5 �� / TPN-G- 1,500 y ug
<br /> /L
<br /> -3,900 TPH-G Total Petroleum Hydrocarbons as
<br /> X r - <O 5 I �}g_ ��V-7 MTBE- 110,
<br /> TPH�G
<br /> -f,,<50 IV-9/ V-11 MTBEt- <50 ♦ ' I/ Gasoline, ug/L
<br /> 5VET5 I V-8 �► 5 MTBE Methyl Tert-butyl Ether, ug/L
<br /> MTBE - °<5 S 6 Y-5 �� A ��0
<br /> Trash Enclosure --♦--1— —I-E-27" E-7 Approximate Extent of Benzene
<br /> - - - _ _ _ _ �_ 5-5' _ o
<br /> Public UtihtieS Easement Block Wall T NORTH in Groundwater, ug/L
<br /> p T <05 0 20 40 ^�1� Remediation 5y5tem Piping
<br /> — .- - - - - - - - - _ ? 13 {� - <05 E x- <05
<br /> B <05� T '"- <05 X - <05 Scale in Feet
<br /> T 1, --<05- i E ` ', - <05 TPN-G,- 54' Note
<br /> EV", - <05" g Sin le Sto � X - <05 MTBE u- <5 Wells E-3. E-4, E-5, E-6, E-7, PR-2, BHD-2, MW-1, MW-2,
<br /> X v; <05 ry i TPH-G - 2'40 PR-2
<br /> and MW-3 on asemi-annual Sampling Schedule Wells Sampled
<br /> TPH-G'- -<50 Gondominium5 MTBE � <5, 5 1"'-' <05 I during the lot and 3rd quarters of each year
<br /> MTBE <5 7 � <05,
<br /> E <05 1171 ARCO Facility No. 2133,
<br /> X� �<05 Stockton, California
<br /> <0 5 1 Story MW-3 B - ,<05 Tf H-G -x <50 TITLE
<br /> T ` „ - +<05 f Constituent Concentration Ma
<br /> E{ `` - <O5< Residential Housing T - <O5 MTBE`- <t<5 P
<br /> X = <05 E ` - <O5 August 19, 1997
<br /> X <0 5 PROJECT
<br /> TPH-G - <50 TPH-G _` <50 B IR 0 W N A N D 47,57 Figur e
<br /> MTBE -- <U MW-4 MTBE _ <5 DATE
<br /> C JA L D W E L L 10-23-97 2
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