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I I s_ ---.-----.---------------. ------- � � --WATER-'-'-'-------'---' -------' EXCAVATED TO 7 FEET BGSI W I EX-SB2-N j W ----------------------------------GAS TPH-MO TPH-D TPH-G _1___________y._ __________ TW-01 ______________ ____ _____-_ 310 15 <0.57 I I i TPH-MO TPH-D TPH-G Naphthalene EX-SB2-W I i <500 430 <100 <10 I I •SB-13 TPH-MO TPH-D TPH-G I I a8 <5.6 <0.56 se-011 SB-02I EX-SB2-E • • i TPH-MO TPH-D I H-G EX-S62-B 37 <5.6 TPH-MO TPH-D TPH-G - ------- ISO 14 <0.57 -------------------- EX-584-N 1- EX-SB2-S TPH-MO TPN-D TPM-G Q TPH-MO TPH-D TPH-G ` 1 c27 c5.3 <0.53 Y I <28 <5.7 <0.57 i Z SB-12 I SB-03 • j • H SB-IB NORTH WALL:EXCAVATED 1 • 1 TO 8 FEET BGS � W Q I ..-'-•-•-•-•-'-'-'-'-'---•-'-'-'--------'--WATER'-----------'--'-' '—---'-'-'-----'---'- --------- 1 S8..04 Z • OL SB-11 SB 14 • • I BOTTOM:EXCAVATED � - - TO 11.5 FEET BGS 1 SB-0 5B 10• LEAST D SOUTH WALLS: j SBM1-E sB 17 D TO II FEET BGS IH-D TPH-G 5.6 <0.56 I SB-09 EX-SB4-B ___________�� _.. TPH-MO TP TPH-G _-. ---SB-06 Q9 8.9 x.58 R • SB-08 56-07 • • EX-SB4-S TPH-MO TPH-D TPH•G 56.16 <27 <5.4 <0.54 • -_--------------------_-------_-----__-__._.-------_.__-._-__-._.._.-_.-_-._-._-._.-_.._-.--.. h Q � e i LEGEND: NOTES. PACIFIC GAS AND ELECTRIC COMPANY MCDONALD ISLAND COMPRESSOR STATION,STOCKTON,CA ® GRAB GROUNDWATER SAMPLE ----UNDERGROUND ELECTRICAL LINE 1.LESS THAN SIGN(<)INDICATES ANALYTE IS NOT DETECTED n f LOCATION(AUGUST 2010) ABOVE STATED LABORATORY REPORTING LIMIT. C51 TANK INVESTIGATION ----UNDERGROUND GAS LINE EXCAVATION AND SAMPLING G SOIL CONFIRMATION SAMPLE(AUGUST 2010) _._.UNDERGROUND WATER LINE 2.ALL SOIL RESULTS ARE IN MILLIGRAMS PER KILOGRAM(mg/kg). o a • SOIL BORING(APRIL 2010) EXCAVATION(AUGUST 2010) 3.ALL GROUNDWATER RESULTS ARE IN MICROGRAMS PER SAMPLE RESULTS BOLLARD1- i EXCAVATION AREA DECEMBER 2008 LITER(NgiL)' °c v= 4 GAS VALVE I"-" ( ) 0 10 20 u 0 CONCRETE PAD 4.ALL SAMPLE LOCATIONS ARE APPROXIMATE. Q 3 TEMPORARY FENCE GRAPHIC SCALE CD 0 ARCADIS I FIGURE ud