NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

Acampo Hwy 99 80 140 10/18/2007 ALAMEDA 1150 MARINA VLG. PKWY 10 35 02/01/93 SW,SM,CL ALAMEDA 1500 BUENA VISTA 10 35 01/04/93 CL ALAMEDA 1500 BUENA VISTA AVE 7 20 3/17/1993 GP SW SM CL ALAMEDA 1800 PARK AVENUE 17 30 4/15/1993 CL SM ALAMEDA 200 CENTRAL AVENUE X 15.5 6/14/1993 CL SM ALAMEDA 2000 ENCINAL 8 20 6/9/1994 SM ALAMEDA 2100 CLEMENT ST 10 18 5/6/1999 CL,GP ALAMEDA 2100 CLEMENT ST 5 13.5 5/7/1999 CL,GP ALAMEDA 2100 OTTIS DRIVE 8 10 2/15/1996 GRAVEL/BAYMUD ALAMEDA 2100 OTTIS DRIVE 5 10 8/1/1997 GP,SW ALAMEDA 2100 SANTA CLARA STREET 3 15.5 5/20/1994 SM ALAMEDA 2400 ENCINAL 4 24 12/14/1993 X ALAMEDA 2400 SANTA CLARA 6 15.5 10/9/1996 CL SW ALAMEDA 2400 WEBB AVENUE X 20 10/29/1997 SW,CL ALAMEDA 2900 MAIN 5 57 2/14/1995 SAND/CL ALAMEDA 400 HIGH STREET 20 35 3/25/1993 CL ALAMEDA 500 MAITLAND DRIVE 8 18.5 5/6/1994 X ALAMEDA 600 CENTRAL AVENUE 3 15 2/16/1998 FILL SAND ALAMEDA ALAMEDA HIGH SCHOOL 6 14 06/26/92 X ALAMEDA ALAMEDA NAVAL AIR 9 15 10/18/1996 SW ALAMEDA ALAMEDA NAVAL AIR X 17 07/22/92 SW ALAMEDA ATLANTIC 10.3 16 04/03/92 SAND CL ALAMEDA EVERETT CLEMENT 6 12 7/20/1998 CL,SW ALAMEDA GRAND STREET 12 20 10/28/1994 GP CL ALAMEDA HSP SITE 5 BLDG 5 5 15 9/21/1993 SM CL ALAMEDA WEBSTER TUBE 5 75 7/31/1996 SAND ALBANY 1000 E FRONTAGE ROAD 10 15 7/4/1997 GROUT,SAND ALBANY 1000 EAST SHORE 8 18 05/12/92 X ALBANY 1000 EASTSHORE HWY 7.5 10 8/14/1997 GP BAYMUD ALBANY 900 SAN PABLO AVENUE 7.5 8 2/12/1999 CL ALBANY BAYVIEW OFFICE PARK 3 40 11/26/1996 CL ALBANY X 3 103 03/19/89 CL ALDERPOINT EUREKA SOUTHERN X 12 9/4/1997 CL GP

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 1 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

ALPAUGH 3200 AVENUE X 15 9/4/1997 CL AMERICAN RIVER NATOMAS CRS CNL 25 70 9/10/1997 CL/SAND AMERICAN RIVER SLURRY WALL 25 49 06/29/92 SAND AMERICAN RIVER SLURRY WALL 42 78 11/07/91 CL/SAND ANAHEIM NORTHRUP 7.5 26 11/18/91 CL ANTIOCH 1000 WEST 4TH STREET 19 9/23/1994 ANTIOCH 1000 WEST 4TH STREET 7 18 4/12/1999 SL/SILTS ANTIOCH 1700 WEST 10TH STREET 24 9/21/1994 ANTIOCH 1800 A STREET 38 45 9/12/1994 SM/CL ANTIOCH 200 WILBUR AVENUE X 5 3/25/99/ GP, SW ANTIOCH 3200 WILBUR AVE 8 35 4/24/1996 ANTIOCH 3200 WILBUR AVE 8 12 8/20/1996 ANTIOCH 3800 OAKLEY 43 53 6/23/1999 CL, SAND ANTIOCH 4TH STREET 27 40 7/1/1999 CL SM ANTIOCH A STREET 44 5/4/1997 CL ANTIOCH ANTIOCH HHD 5 125 5/5/1997 CL/SAND ANTIOCH BRIDGEHEAD & HWY. 4 3 5 7/7/1999 SW SM ANTIOCH CHEVRON LM SITE 100 121 7/29/1996 CL ANTIOCH CONTRA LOMA 17 31 3/24/1999 CL ANTIOCH DUPONT FACILITY 7 30 3/7/1995 SAND/CL ANTIOCH END OF WILLOW AVENUE 10 9/23/1994 Antioch Neroly Rd. & Empire Ave. 43 50 11/2/2007 ANTIOCH OAKLEY RD 45 53 3/23/1998 ANTIOCH OXER RD 27 40 9/17/1996 ANTIOCH OXER RD 32 64 10/10/1997 ANTIOCH OXY TANK 30 48 8/28/1997 GROUT/SANDPACK ANTIOCH PG & E SITE 70 102 10/14/1996 CL/SAND ANTIOCH ROCK & WILLOW ST 40 65 3/15/1995 CL,SM,GP ANTIOCH SAND CREEK X 54 7/19/1999 GROUT ANTIOCH SOMMERSVILLE RD X 120 5/31/1994 STIFF CLAY ANTIOCH WILLOW & OAKLEY 26 29 10/19/1998 SAND, CL ANTIOCH WILLOW AVENUE NO WATER 40 7/24/1998 SM CL SANDSTONE ANTIOCH WILLOW AVENUE 32 75 5/4/1994 SM/CL/GP ANTIOCH WILLOW AVENUE 38'-52' 105 10/13/1994 SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 2 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

ANTIOCH WILLOW STREET 34 53 6/21/1999 SM, CL ANTIOCH X 23 50 01/12/93 CL/GP/ROCK APTOS 1100 HOMES ROAD NO WATER 22 9/29/1997 SM ARCADIA 1000 G STREET X 35 10/10/1997 GR ARCATA BRAWT SITE 3 97 10/31/1997 SAND/CL ATWATER CASTLE AIR FORCE BASE X 65 01/24/92 SAND AUBURN 13000 LINCOLN WAY X 8 4/24/1998 CL BEDROCK AUBURN 1600 LINCOLN WAY 12 15 12/12/1998 BEDROCK BAKERSFIELD 5300 OLIVE DRIVE 3 5/11/1998 GP SW BAKERSFIELD COLUMBUS AVENUE 15 30 12/21/1998 SAND BELMONT 1000 SHARWAY ROAD 5 14 8/13/1998 SM BELMONT 1500 INDUSTRIAL WAY 13 25 5/14/1998 BEDROCK BELMONT 1500 INDUSTRIAL WAY 11 30 6/9/1998 HARD REFUSAL BELMONT 1500 INDUSTRIAL WAY 28 30 8/3/1998 SAND STONE BELMONT 200 INDUSTRIAL WAY 7 13 8/12/1998 BELMONT EL CAMINO & RALSTON 105 110 8/14/1998 CL BELMONT ESA SITE 4 100 02/05/93 CL/SAND BENCIA EAST CANYON X 50 2/14/1994 CL, FILL, BEDROCK BENCIA PANOCHE 28 30 8/18/1993 BEDROCK BENICIA 3400 EAST SECOND & 2ND STREET 5 20.5 2/11/1999 ROCK/CL BENICIA 393-471 E. CHANNEL 26 58 1/18/1995 CL Benicia 4100 block Industrial Blvd. 5 70 2/8/2008 Benicia 4100 block Park Rd. 6 70 2/14/2008 BENICIA 500 EAST CHANNEL BLVD. 10 20 9/22/1997 SM/CL BENICIA 600 BENICIA BRIDGE 40 2/1/1999 CL/ROCK BENICIA 680/780 40 2/4/1999 CL/GP BENICIA 680/780 13 30 2/19/1999 CL BENICIA 680/780 30 9/24/1997 SM/GP BENICIA BENICIA X 55 10/22/1997 X BENICIA BENICIA WETLANDS 3 70 2/11/1999 CL/SAND BENICIA E. CANYON LAND FILL 20 67 10/13/92 CL, GARBAGE BENICIA EAST SECOND STREET 20.5 7/16/1999 CL BENICIA EXXON REFINERY 15 40 2/3/1997 CL SW BENICIA EXXON REFINERY 10 20 10/10/1997 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 3 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

BENICIA INDUSTRIAL WAY 10 60 10/10/1997 SM BENICIA LAKE HERMAN ROAD 60 9/17/1997 BENICIA PANOCHE LAKE HERMAN RD 0 52 5/19/1998 BEDROCK/SANDSTONE BENICIA PANOCHE LAKE HERMAN RD 0 48 1/2 2/9/1999 FILL+ROCK BENICIA PANOCHE LANDFILL 20 35 10/3/1994 X BENICIA PANOCHE/LAKE HERMAN RD. 18 38 9/2/1997 CL, BEDROCK BENICIA PANOCHE/LAKE HERMAN RD. 20 40 9/3/1997 BEDROCK BENICIA PANOCHE/LAKE HERMAN RD. X 33 9/13/1997 X BENICIA PANOCHE/LAKE HERMAN RD. X 43 8/26/1998 FILL ROCK BENICIA PANOCHE/LAKE HERMAN RD. 40 50 5/1/1998 X BENICIA PANOCHE/LAKE HERMAN RD. 29.5 56 10/21/1998 CL,WEATHER ROCK BENICIA PARK ROAD 5 2/1/1999 BENICIA PARK ROAD 5 7/24/1996 GP/CL BENICIA PARK ROAD 5 8/14/1997 CL/GP BENICIA ROSE & BLAKE 20 110 10/7/1994 ROCK/HARD PAN BENICIA ROSE & BLAKE 14 20 9/23/1996 CL GR BENICIA ROSE DRIVE X 38 8/1/1996 CL BENICIA ROSE DRIVE X 25 09/16/92 CL,ROCK BENICIA ROSE DRIVE X 20 9/21/1998 FILL ROCK BENICIA ROSE STREET 25 37 10/7/1997 SM CL BENICIA SOUTH HAMPTON 28 65 2/10/1997 CL BENICIA SOUTH HAMPTON 14 X 7/15/1996 CL GP SHORE RK BENICIA VALERO REFINARY 2 60 11/17/1997 CL BENICIA VALERO REFINERY 40 2/11/1999 CL/SM BENICIA VALERO REFINERY 20 40 2/9/1999 CL BERKELEY 1200 6TH STREET 5 20 02/11/93 X BERKELEY 1000 PARDEE STREET X 15 7/15/1994 CL BERKELEY 1200 6TH AVE 5 20 4/7/1994 Berkeley 1300 block Fourth St 17 66 3/6/2007 BERKELEY 1700 RUSSELL STREET X 35.5 8/10/1998 CSM CL SW BERKELEY 1700 SHATTUCK AVENUE X 25 9/12/1996 X BERKELEY 1800 UNIVERSITY AVENUE 20 5/13/1999 CL BERKELEY 2700 SAN PABLO AVENUE 6 6 3/10/1997 SM CL BERKELEY 2800 ADELINE 30 45 11/18/91 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 4 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

BERKELEY 3000 ASHBY AVENUE 6 9 23-Jun GP SW ROCK BERKELEY 600 VIRGINIA ST 5 19 1/29/1997 GROUT,SAND BERKELEY 700 HEINZ AVENUE 10 49 6/7/1994 SAND/CL BERKELEY 800 GRAYSON X 60 06/29/92 SW,CL BERKELEY BAYER/COLGATE SITE 10 70 4/9/1997 CL BERKELEY BERKELEY LAB 15 47 8/11/1994 CL BERKELEY BLDG. 64 25 4/8/1997 GP/CL BERKELEY LBL 60 60 7/23/1997 BERKELEY NEAR UNIVERSITY 7 21.5 7/1/1999 LAND FILL BERKELEY SAN PABLO 20 30 03/27/92 CL SW BERKELEY UCLBNL 23 25 12/30/1998 CL BERKELEY UCLBNL 15 16 11/21/91 CL BERKELEY UCLBNL N/A 60 11/24/1998 CL CP BERKELEY UCLBNL X 30 09/22/92 BEDROCK BERKELEY UCLBNL X 50 10/12/92 X BERKELEY UCLBNL 50 103 05/15/92 X BERKELEY UCLBNL 8 20 9/23/1993 X BERKELEY UCLBNL 60 65 08/25/96 BED ROCK BERKELEY UCLBNL X 40 3/22/1999 ROCK,STIFF CLAY BERKELEY UCLBNL 34 39 08/28/96 GP, CL BERKELEY UCLBNL X 35 2/28/1997 BED ROCK BERKELEY UCLBNL 12 26 05/12/92 X BERKELEY UCLBNL 35 50 8/3/1996 BEDROCK BERKELEY UCLBNL/BLDG #69 21 35 5/12/1999 SW,CL BERKELEY UCLBNL/BUILDING 14 12 20 3/18/1997 CL BERKELEY UNIVERSITY 16 31 9/28/1994 CL, ROCK BERKELEY VERIFLOW 4 6 11/10/92 CL BERKELEY WALNUT ST 16 31 3/12/1999 CL BERKELEY WALNUT ST UCB 14 30 8/22/1996 BERKELEY X X 8 5/12/1999 CL BERKELEY X 50 5/20/1997 CL BERKELEY X 1 77 6/28/1994 CL BIG SUR VINTANA INN 18 30 8/25/1994 X BOLINAS WHARF ROAD 5 20 8/29/1994 CLAY SILTS

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 5 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

BOLINAS WHARF ROAD 12 20 3/20/1995 CL/SM BOLINAS X 5 20 9/22/1996 SM Bouldin Island Bouldin Island 10 75 1/25/2008 Brentwood 100 block Birch St. 20 50 8/24/2007 Brentwood 1700 block Chesnut St. 6 60 6/2/2008 BRENTWOOD 20 SPRUCE STREET 20 39 5/21/1997 GROUT SEAL, SP Brentwood 3rd & Oak St. 26 50 10/12/2007 BRENTWOOD BALFOUR & FAIRVIEW 14 20 07/10/92 CL BRENTWOOD BRENTWOOD WWTP 6 31 1/25/1999 SAND/CL BRENTWOOD BRENTWOOD WWTP 6 30 2/8/1999 SAND/CL BRENTWOOD BRENTWOOD WWTP 6 60 3/11/1999 SAND/CL BRENTWOOD CHEVRON 20 33 9/23/1997 X BRENTWOOD DAINTY AVENUE X 10 07/27/92 CLAYS BRENTWOOD DEER VALLEY ROAD 32 40.5 10/9/1997 CL, ROCK BRENTWOOD DEER VALLEY ROAD 20-35 45.5 07/17/92 GP,CL BRENTWOOD LIBERTY UNION HIGH SCHOOL 10 50 3/6/1998 SAND/CL BRENTWOOD LIBERTY UNION HIGH SCHOOL 10 45 2/8/1999 CL/SAND BRENTWOOD LONE TREE WAY 28 45 03/02/92 CL BRENTWOOD MINNESOTA AVENUE 15 18 11/5/1996 CL BRENTWOOD OXEY RD 27 64 1/26/91 CL,BEDROCK,SANDST BRENTWOOD PG&E 25 35 04/17/89 X BRENTWOOD ROUTE 4 BYPASS 25 40 3/9/1998 CL BRENTWOOD SAN JOSE RD X 40 08/17/92 CL,SM,SW BRENTWOOD SANDCREEK 20 30.5 9/29/1997 CL, SILTS BRENTWOOD SUNSET @ MARSH CREEK 12 60 3/11/1999 CL/SAND BRENTWOOD WASTEWATER TREATMENT 8 40 1/25/1999 SAND/CL BRISBANE 300 VALLEY DRIVE X 32 9/22/1997 SM,CL BRISBANE SIERRA POINT LANDFILL 16 25 4/8/1998 FILL/TRASH BRISBANE VALLEY DRIVE 15 25 5/2/1994 CL BURLINGAME 1000 CAROLYN AVENUE 10 27.5 3/5/1997 CL, SAND BURLINGAME 1100 EL CAMINO 11 30 3/5/1997 SND STN CL BURLINGAME 700 BURLWAY ROAD 23 30 3/10/1997 X BURLINGAME BROADWAY & CALIFORNIA 18 30 05/07/92 CL GP BURLINGAME X 6 12.5 4/28/1997 X

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 6 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

BURLINGAME X 12 25 3/3/1997 SL BYRON MOUTAIN HOUSE ROAD 9 40 11/12/92 CL BYRON VASCO ROAD 7 15 09/18/92 CL SM BYRON/DISCO BAY 1700 WILLOW LAKE ROAD 15 30 6/30/1997 SM CL CALISTOGA 1200 FOOTHILL 14.5 15 02/01/93 CALISTOGA 1200 FOOTHILL 13 30 6/23/1997 CALISTOGA X 10 156 7/1/1998 CL/SAND CAMPBELL BUDD & WINCHESTER 9 13 11/17/1993 GP SW CL CAMPBELL X X 25 12/13/1993 GP SW CL CAPITOLA 2100 41ST AVE 61 70 2/3/1997 CAPITOLA 2700 41 STREET 90 100 7/28/1997 SM CAPITOLA 600 BAY STREET X 90 1/26/1995 CARMEL CARMEL LEVEE 14 22 9/12/1997 SAND CARMICHAEL 4600 MANSANITA AVENUE 61 09/15/92 CARMICHAEL 4600 MANSANITA AVENUE 60 7/10/1997 SM/CL CARMICHAEL 5100 FAIR OAKS BLVD. 40 45 03/15/89 CASTILLO STATION PG&E 95 100 09/24/92 X Castro Valley 2400 block Castro Valley Blvd. 9 60 5/3/2007 CASTRO VALLEY 2700 CASTRO VALLEY BLVD 10 12 4/14/1999 SW CL CASTRO VALLEY 3400 CASTRO VALLEY BLVD. 12 15 4/12/1999 SM CL GP CASTRO VALLEY 6900 VITLARED DRIVE 40 9/29/1994 GP/CL CASTRO VALLEY X X 20 4/13/1999 CL SM SW GP CASTROVILLE 10000 MERRITT STREET 12 30 2/6/1995 SM,CL,SW CEDAR 37000 CEDAR BLVD. 15 25 3/28/1995 CL/SM CERES 3000 4TH STREET 18 25 9/10/1996 CHICO 900 EAST AVE 38 40 4/2/1998 CHICO 900 EAST AVENUE 30 35 11/7/1997 GP CHOWCHILLA 17000 AVENUE 23 1/2 18 45 7/30/1997 SW CITRUS HIGHTS 7500 SUNRISE BLVD. 10 31 12/16/1993 CL CLOVERDALE 2000 WOODHAWK LANE 30 100 4/2/1997 WEATHER ROCK CLOVERDALE FIRST STREET BRIDGE X 40 9/18/1996 COBBLES,GRAVEL CLOVERDALE SANTANA DRIVE 15 25 12/18/1997 BEDROCK COALINGA COALINGA 30 60 12/18/1997 BEDROCK COLUSA 1800 SOLANO AVE 11 80 11/16/1998

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 7 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

COLUSA COMPTON STATION NO WATER 41.5 04/12/89 CL COLUSA/MERIDIAN PRINCETON/PASS RD 18 22 2/11/1999 CL/SAND CONCORD 1000 OAK GROVE ROAD 13.5 14 5/20/1998 CL CONCORD 1000 SHARY CIRCLE 12 20 12/19/1997 CL GP CONCORD 1300 CONCORD AVENUE 20 40 01/29/93 SL SM CONCORD 1500 CONCORD AVENUE 23 5/24/1993 CONCORD 1500 KIRKER PASS ROAD 22 29 5/20/1993 CONCORD 1700 CONCORD AVENUE 15 22 12/17/1997 SM CL CONCORD 1700 MONSANTO 20 30 8/8/1997 SAND,CL CONCORD 2000 CLAYTON ROAD X 16 10/15/91 X CONCORD 2200 DIAMOND BLVD 14 16 1/30/1995 X CONCORD 2800 MONUMENT BLVD 13 25 05/11/92 GP CL CONCORD 2800 WILLOW PASS ROAD 30 40 6/17/1993 CL/GP CONCORD 4700 EVORA ROAD 78 7/18/1993 SM CONCORD ARNOLD INDUSTRIAL WAY X 15 12/17/1997 CL SW CONCORD ARNOLD IND. PLACE 14 25 8/6/1997 GP CL CONCORD B OF A 28 45 6/22/1998 CL,GP CONCORD CLAYTON & THE ALAMEDA 17-22 25 4/10/1997 CL CONCORD CLAYTON ROAD 17 30 6/21/1996 CL, GP CONCORD CLAYTON ROAD 25 27 11/13/91 X CONCORD CONCORD 8 10 6/8/1999 SM CL CONCORD CONCORD NAVAL WEAPONS 20 35 8/7/1997 CL, SAND CONCORD GALINDO STREET 25 45 4/19/1993 CL,SM CONCORD MALLARD DAM 110 10/26/1993 CL CONCORD PORT CHICAGO HWY 8 10 12/16/1997 SM CL GP CONCORD PORT CHICAGO HWY NONE 27 12/9/1998 CL CONCORD PORT CHICAGO HWY 35 40 2/25/1997 CL CONCORD PORT CHICAGO HWY 17 22 8/7/1998 CL CONCORD PORT CHICAGO HWY 20 35 02/08/93 CL,SW,SM CONCORD SEARS AUTO/WILLIOW PASS X 26 4/14/1993 CL,SAND CONCORD SOLANO AVE 12 31 3/18/1993 CL,SAND CONCORD TOSCO 10 32 2/23/1994 CL/SM/GP/SW CONCORD TOSCO REFINERY 12 31 10/16/1998 CL, SAND CONCORD TRACY GLEN 5 40 9/14/1993 SAND/CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 8 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

CONCORD WILLOW PASS RD 16 26 11/6/1996 CONCORD WILLOW PASS ROAD 20 75 6/17/1997 X CONCORD WILLOW PASS ROAD 8 20 3/16/1994 CL,GP, COBBLES CONTRA COSTA PG&E 27 35 4/11/1994 SM CORDELIA 4400 CENTRAL WAY X 17 6/17/1994 CL CORNING 700 COLUSA AVE X 20 7/15/1994 SM,CL CORNING PG&E NO WATER 40 10/14/1994 CL CORNING RICE CREEK X 24 7/25/1994 CL CORNING X 5 20 6/17/1994 CL CORTE MADERA NEIL CUMMINGS SCHOOL 5 45 11/18/1996 CL/SAND CORTE MADERA TAMAL VISTA 45 45 4/5/1996 GP SM CL COTATI 7700 OLD REDWOOD HWY. 7 25 3/25/1997 CL/SM COTATI GALLO VINEYARD 5 25 2/6/1997 X COTATI X 35 41 2/25/1997 CL COTTONWOOD 19000 MAIN STREET 5 15 10/14/1997 GP/COBBLES COTTONWOOD 19000 MAIN STREET 4 15 10/27/1997 GP COURTLAND 40000 JEFFERSON BLVD. 8 10 01/22/92 CL COURTLAND X 15 25 12/10/1997 CL SW CROCKETT C&H PLANT 6 15 01/31/92 FILL CROCKETT C&H SUGAR ROLPH AVE. 17 25 04/20/92 X CROCKETT C&H SUGAR ROLPH AVE. 3 15 04/24/89 BAYMUD,GP CROCKETT CUMMINGS SKYWAY 15 20 04/10/92 BED ROCK CROCKETT PORT COSTA 17 23.5 05/05/92 CL/WEATHER ROCK CUPERTINO 10000 N. TANTAU 20 41 06/27/92 GP CL CUPERTINO 10000 N. WOLF ROAD 100 120 8/3/1998 X CUPERTINO 20000 STEVENS CREEK NONE 20 10/9/1998 CL CUPERTINO 2400 WALSH AVENUE 8.6 15 06/23/92 X CUPERTINO APPLE COMPUTERS 0 60 7/9/1998 SM GP CUPERTINO DE ANZA COLLEGE 59 X 8/25/1998 CL, GP CUPERTINO HOMESTEAD & LAWRENCE N/A 110 8/25/1998 CL GP SM CUPERTINO HONEYWELL NONE 20 6/10/1998 GP, COBBLES DALY CITY 1000 HILLSIDE BLVD. 24 40 8/29/1996 SM DALY CITY 2900 JUNIPERO 30 45 11/15/1993 SM DALY CITY 4600 CALLAN BLVD X 45 5/14/1999

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 9 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

DALY CITY 4600 CALLAN BLVD X 75 10/26/1998 DALY CITY 4600 CALLAN BLVD X 40 6/24/1993 DALY CITY 6800 MISSION STREET 100 105 7/12/1999 X DALY CITY X 9 14.5 5/19/1999 X DANVILLE BOONE COURT 22 30 6/13/1994 SILTY CL DANVILLE EMPTY LOT X 25 11/1/1993 CL,SAND,STONE DANVILLE 1000 SHOREHILL ROAD 10 40 2/9/1999 SM BEDROCK DANVILLE 300 N. HARTZ AVENUE X 20 4/6/1999 X DANVILLE 400 S. RAMON VLLY BLVD 11 20 7/26/1993 CL DANVILLE 700 SAN RAMON VALLEY ROAD 14 25 6/16/1994 SM DANVILLE CROW CANYON ROAD 8 18 05/13/92 CL DANVILLE FLEETWOOD ROAD 30 75 2/8/1999 SM CL SANDST. DAVENPORT 700 HIGHWAY 1 10 20 6/20/1994 X DAVIS 1900 ANDERSON ROAD 30 45 2/2/1998 CL DAVIS 1900 ANDERSON ROAD 30 45 8/21/1998 CL/SM DAVIS 1900 ANDERSON ROAD 30 65 6/18/1997 CL/SM Davis 2000 block Lyndell Terrace 35 105 7/21/2008 DAVIS 300 G STREET 30 40 12/2/1998 CL DAVIS 300 G STREET 37 80 12/9/1996 CL DAVIS 4400 CHILES ROAD 15 18.5 12/7/1998 S.C./CP DAVIS 500 L STREET NONE 12 6/23/1994 CL SW DAVIS 5TH STREET 22 59 10/23/1997 X Davis Farady Ave & Second St. 20 113 6/19/2008 DAVIS LEHR SITE X 30 9/6/1994 CL SW DAVIS SHELL SITE 30 74 6/17/1998 CL DAVIS SHELL SITE 70 11/12/1998 CL/SAND DAVIS SILVER LIGHT 60 104 11/6/1996 X DAVIS SILVER LIGHT 20 30 10/6/1997 SILTS DAVIS SOLANO CO./ PG. 49 3 11 10/22/1997 CL SM DAVIS UC DAVIS X 35 1/25/1995 CL, GP DELANO 900 MAIN STREET 63 80 8/30/1996 SW,SM,GP Dinuba 1000 block E. El Monte Way 59 120 6/19/2008 DISCOVERY BAY DISCOVERY BAY SCHOOL 5 50 05/12/92 SAND/CL DISCOVERY BAY X 5 40 5/31/1994 CL/SAND

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 10 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

DIXON 100 EAST F STREET 23 30 7/12/1996 CL/SM DIXON BUNKERS FIELD/PG&E 4 14 5/24/1994 CL DIXON FORMER CILONI OIL SITE 23 70 9/8/1994 CL DIXON MCMULLEN/PG&E 10 20 4/21/1997 X DIXON MILLAR/PG&E 20 24 2/28/1995 X DIXON MILLAR/PG&E 20 30 10/07/91 SM DIXON MILLAR/PG&E 16 26 12/11/91 X DOS PALOS FORMER PUREGRO SITE 14 100 7/16/1996 CL/SAND DOS RIOS EUREKA SOUTHERN 20 30 11/12/1996 CL GP DUBLIN 11000 DUBLIN BLVD 6.6 68 06/22/92 DUBLIN 11000 DUBLIN BLVD. 18 23 8/27/1997 GP DUBLIN 33000 7TH STREET 10 15 8/25/1997 X DUBLIN 6000 SCARLETT STREET 6'-7' 16.5 8/14/1997 SM CL Dublin 6300 block Scarlett Court 3.5 66 5/21/2007 DUBLIN 6300 SCARLETT COURT 2 85 08/17/92 SAND/CL DUBLIN AMADOR/DUBLIN ROAD X 25 8/13/1997 CL DUBLIN ASSOC. DUBLIN TOYOTA 10 20 11/5/1997 X DUBLIN DOUGHERTY DRIVE 8 21.5 8/25/1997 SM CL DUBLIN DOUGHERTY DRIVE 10 X 9/16/1997 X DUNNIGAN HERSHEY JUNCTION/PG&E 40 50 10/21/92 CL DUNNIGAN HERSHEY JUNCTION/PG&E 40 50 10/26/92 SW DUNNIGAN HERSHEY JUNCTION/PG&E 35 38 12/26/91 CL DUNNIGAN MUMMA RD/PG&E N/A 6 09/03/92 CL, SAND E. PALO ALTO 1900 BAY ROAD 3 6 4/2/1999 COBBLES,CL E. PALO ALTO HOME DEPOT 14 40 7/28/1999 SAND/CL E. PALO ALTO HOME DEPOT 14 41 7/29/1999 CL/SAND E. PALO ALTO ROMIC CHEMCIAL 2.5 5 12/30/91 GP EL CERRITO 11000 SAN PABLO AVENUE 10 15 4/6/1999 SM CL EL CERRITO 9800 SAN PABLO AVENUE 7 17 4/2/1999 SAND PACK, CL EL CERRITO SHELL SAN PABLO AVENUE X 20 10/8/1998 CL, SAND EL SOBRANTE 3600 SAN PABLO DAM ROAD 28 33 09/21/92 CL ELMIRA A STREET 20 65 10/05/92 CL/SM ELMIRA A STREET 9 130 10/12/92 CL/SAND ELMIRA A STREET 9 122 3/17/1998 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 11 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

ELMIRA FOX ROAD 5 70 10/26/92 SAND/CL ELMIRA SANTA FE PIPELINE 4 22 3/6/1995 CL SM EMERYVILLE 1100 PARK AVENUE 13 25 8/19/1997 SW CM EMERYVILLE 1100 PARK AVENUE 10 17 5/12/1994 SM CL SW EMERYVILLE 1100 PARK AVENUE X 22 11/05/91 CL, SAND PACK EMERYVILLE 1200 66TH STREET 6.5 8 2/16/1998 GP SM CL EMERYVILLE 1200 PARK AVENUE 6 20 02/04/93 CL GP EMERYVILLE 1200 PARK AVENUE 2 15.5 6/15/1994 CL EMERYVILLE 1200 PARK STREET 8.5 15 1/15/1998 X EMERYVILLE 1200 PARK STREET 10 15 12/3/1996 CL SM EMERYVILLE 1400 SHERWIN AVENUE X 18 5/16/1994 SM CL EMERYVILLE 1400 SHERWIN AVENUE 10 20 9/27/1994 CL EMERYVILLE 1400 SHERWIN AVENUE 8 20 11/11/1998 CL EMERYVILLE 1400 SHERWIN WAY 8 24.5 09/02/92 CL,GARBAGE,SAND EMERYVILLE 1400 SHERWIN WAY 8 23.5 11/16/92 CL,GARBAGE,SAND EMERYVILLE 1600 POWELL STREET 12 27 2/2/1998 CL EMERYVILLE 4000 HOLLIS STREET 18 120 2/22/1999 BAY MUD EMERYVILLE 4000 HOLLIS STREET 10 25 8/23/1996 GP CL Emeryville 4500 block Hurton St. 12 50 6/2/2007 EMERYVILLE 4500 HORTON STREET 10 65 4/27/1994 GP CL EMERYVILLE 45TH & SHERWIN 7 20 03/07/92 CL GP EMERYVILLE 4600 SHELLMOUND 4 16.5 10/21/91 BAY MUD,GARBAGE EMERYVILLE 5400 SHELLMOUND 15 35 10/1/1996 GP,CL EMERYVILLE 5800 HOLLIS STREET 24 2/1/1999 EMERYVILLE 5800 SHELLMOUND STREET 12 20 7/13/1994 SM,CL,BAYMUD EMERYVILLE 6300 HOLLIS STREET 5 15 8/16/1994 SM,CL EMERYVILLE 6400 HOLLIS STREET 7 14 10/07/91 SAND PACK,PORLAND EMERYVILLE 64TH & HOLLIS 8 50 03/13/92 SM CL EMERYVILLE 900 PARK AVENUE 4 20 9/13/1994 X EMERYVILLE DEL MONTE 10 30 11/3/1997 SM CP CL EMERYVILLE DEL MONTE 8 15 6/22/1994 CL, BAY MUD EMERYVILLE EMERYVILLE 9 45 01/16/92 BAY MUDS EMERYVILLE FEDEX STATION 10 130 9/30/1998 SAND/CL EMERYVILLE HARTON 7 30 8/3/1998 BAYMUD,SAND

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 12 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

EMERYVILLE HARTON ST 8 60 9/18/1998 EMERYVILLE HOLLIS & YERBA BUENA X 20 3/30/1993 CL SM EMERYVILLE HORTON STREET 15 1/19/1998 EMERYVILLE HORTON STREET 7 33 3/19/1999 GROUT SEAL/SANDPACK EMERYVILLE HORTON STREET 10 30 2/1/1999 ROUT SEAL/SANDPACK/BAYMU EMERYVILLE LANDREGEN & HARUFF 2 12 11/18/1996 CL CW GP EMERYVILLE PARK & HOLLIS 10 20 9/15/1998 SW CL EMERYVILLE PERALTA & SAN PABLO 8 25 3/19/1999 X EMERYVILLE POWELL & 62ND 10 35 8/19/1997 GP CL EMERYVILLE POWELL & I80 6.5 20 7/25/1996 X EMERYVILLE POWELL STREET 7 10 01/02/92 GP SM CL EMERYVILLE SHELLMOUND @ CHRISTY 25 25 3/2/1999 CL EMERYVILLE SHERMAN WILLIAMS 8 45 12/20/91 BAYMUD,SM,SW EMERYVILLE SHERWIN AVENUE 16 20 9/17/1996 CL SM EMERYVILLE SHERWIN WILLIAMS 8 30 04/20/89 GP, BAY MUD EMERYVILLE SHERWIN WILLIAMS 70 10/9/1998 CL EMERYVILLE SHERWIN WILLIAMS 8 31 1/11/1998 CL/SAND EMERYVILLE SHERWIN WILLIAMS 6 114 1/4/1999 CL EMERYVILLE WAREHOUSE 18 20 6/17/1996 X EMERYVILLE X 9 12 10/3/1997 GP SW STEEL EMERYVILLE X 4-7 10 03/03/89 CL GP SM ESPARDO 26000 HWY 16 14 80 12/30/1999 CL,SILTS EUREKA 2400 MYRTLE STREET 20 30 1/11/1999 GROUT, SANDPACK EUREKA 2400 MYRTLE AVE 12 X 1/4/1999 EUREKA 30 WEST 2ND STREET 6 17 1/11/1999 X EUREKA 3900 WALNUT DRIVE 21 5/27/1999 EUREKA 600 FOURTH STREET 7 15 12/30/1998 SAND EUREKA 600 MAIN STREET 5 7 9/20/1998 X EUREKA EUREKA SOUTHERN 9 13 6/28/1999 CL SM FAIR OAKS 7900 MADISON AVENUE 55 65 1/4/1999 CL/SM FAIR OAKS 8800 MADISON AVE 5 35 1/12/1999 FAIRFIELD 1200 OLIVERA ROAD 11 31 8/16/1993 CL FAIRFIELD 1200 WEST TEXAS STREET 10 30 3/13/1997 GROUT SEAL/SANDPACK/S.C. FAIRFIELD 1600 N. TEXAS 4 5 5/18/1998 X

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 13 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

FAIRFIELD 1600 NO. TEXAS STREET 12 20 5/16/1998 X FAIRFIELD 200 DITTNER ROAD X 20 10/14/1996 CL FAIRFIELD 2000 NO. TEXAS STREET 22 24 2/3/1999 SW SM FAIRFIELD 2100 HUNTINGTON DRIVE 11 30 3/31/1997 CL/SM FAIRFIELD 2300 NO. TEXAS STREET 10.7 12 7/21/1999 CL FAIRFIELD 3200 N. TEXAS 14 20 4/25/1994 CL,SM Fairfield 600 block Jackson St. 5 25 2/23/2007 FAIRFIELD 600 PARKER STREET 22 24 2/3/1998 X Fairfield 900 Block E. Taber Ave. 6 70 8/27/2007 FAIRFIELD ARCO STATION 36 1/25/1999 CL/SAND FAIRFIELD GREEN VALLEY CORPORATE 2 51 10/30/1996 SAND/CL FAIRFIELD N. TEXAS ST. 8 26 8/4/1997 CL, SILTS FAIRFIELD NORTH TEXAS STREET 10 30 6/22/1994 CS/SP FAIRFIELD TRAVIS AIR FORCE BASE 4 15 11-Jan CL SM FAIRFIELD TRAVIS AIR FORCE BASE 20 30 5/29/1996 CL SM BEDROCK FAIRFIELD TRAVIS AIR FORCE BASE 13 40 9/9/1996 CL SW FAIRFIELD TRAVIS AIR FORCE BASE X 30 06/10/92 X FAIRFIELD TRAVIS AIR FORCE BASE 17 25 11/10/1997 CL, SM FAIRFIELD TRAVIS AIR FORCE BASE 10 20 1/26/1998 CL, SM FAIRFIELD TRAVIS AIR FORCE BASE 41 9/30/1994 CL/WEATHER ROCK FAIRFIELD TRAVIS AIR FORCE BASE 25 40 6/24/1998 CL/GP FAIRFIELD TRAVIS AIR FORCE BASE 18 50 5/26/1997 CL/SAND FAIRFIELD TRAVIS AIR FORCE BASE 12 56 8/4/1997 GP FAIRFIELD TRAVIS AIR FORCE BASE 7 50 9/30/1997 CL/SAND FAIRFIELD TRAVIS AIR FORCE BASE 25 2/23/1998 SAND/CL FAIRFIELD TRAVIS AIR FORCE BASE 6 70 11/8/1996 CL FAIRFIELD TRAVIS AIR FORCE BASE 6 70 2/3/1999 CL/SAND FAIRFIELD TRAVIS AIR FORCE BASE 6 65 2/1/1999 CL/SAND FAIRFIELD W. TEXAS ST. 6 15 04/14/92 CL, SILTS FIREBAUGH 5000 SANTA FE GRADE 5.5 19 1/25/1999 X FIREBAUGH SAN DIEGO AVENUE 17 35 12/8/1998 CL, GP, SAND FIVE POINTS 21000 LASSEN ROAD 14 33 8/3/1998 CL FIVE POINTS W. FARM LASSEN ROAD. 16 40 9/9/1998 X FLAG CITY THREE B'S 12 121 10/22/1998 SAND/CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 14 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

FOLSOM 500 EAST BIDWELL STREET 11 18 10/8/1998 ROCK/CL/SW FOLSOM 700 EAST BIDWELL STREET X 8 10/7/1998 GP COBBLES FORT SEWARD EUREKA SOUTHERN 25 35 7/14/1999 CL BR FORTUNA 300 SOUTH FORTUNA BLVD. 10 20 02/12/93 CL/GP FORTUNA 400 8TH STREET X 10 7/12/1999 CL FORTUNA 400 8TH STREET 9 30 4/26/1994 CL Foster City 1000 block Shell Blvd. 2 100 1/2/2008 FOSTER CITY 3RD & LAKESIDE 10 20 4/4/1995 BAY MUD FOSTER CITY 700 MARLIN AVENUE 9 18 5/12/1993 SM GP FOSTER CITY E. HILLSDALE & EDGEWATER 4.5 15 5/24/1993 X FREMONT 1880/MISSION 15 115 5/10/1999 CL FREMONT 1880/MISSION 20 120 5/3/1999 SAND/CL FREMONT 1880/MISSION 20 140 8/8/1997 SAND/CL FREMONT 37000 FREMONT BLVD. 40 57 3/8/1999 GROUT SEAL/SANDPACK FREMONT 37000 JOSEPH STREET 9 15 8/29/1997 GP SW SM FREMONT 39000 GALLAUDET DRIVE 19 25 06/02/92 GROUT SEAL,SP FREMONT 39000 GALLAUDET DRIVE 40 60 12/20/91 X FREMONT 400 WASHINGTON BLVD 32 38 2/12/1999 CL FREMONT 400 WASHINGTON BLVD. 40 60 4/23/1998 SM, GP FREMONT 400 WASHINGTON BLVD. 33.5 35 1/26/1999 SAND,CL FREMONT 41000 FREMONT BLVD. 22 38 3/29/1999 CL/SM FREMONT 41000 TRIMBOLI 30 40 01/28/92 SW SM Fremont 42000 block Mission Blvd. 40 100 5/2/2008 FREMONT 42000 OSGOOD ROAD 14 25 03/03/89 FREMONT 45000 FREMONT BLVD. 32 45 1/25/1999 CL, BAYMUD FREMONT 45000 FREMONT BLVD. 18 18 3/15/1999 CL/SM FREMONT 45000 FREMONT BLVD. 18 3/12/1997 SM FREMONT 48000 KATO RD 8-Jan 30 3/23/1993 STIFF CL, ROCK FREMONT 48000 KATO RD 10 59 2/4/1994 CL FREMONT 48000 KATO RD 10 19 1/24/1995 FREMONT 5500 STEVENSON BLVD. X 17 3/11/1997 CL FREMONT COYOTE TRACT 2 30 3/26/1998 CL FREMONT DURHAM ROAD 19 32 02/02/93 CL FREMONT IRVINGTON AUTO 35 70 12/15/1997 SAND/CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 15 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

FREMONT KATO ROAD X 30 02/03/92 SM CL FREMONT KATO ROAD 17 21 05/08/92 X FREMONT LIBERTY STREET 40 8/24/1996 CL/GP FREMONT MOWRY & FARWELL X 20 1/14/1999 GP SM CL FREMONT MOWRY AVENUE X 30 5/1/1997 SM Fremont Nile Rd. 42 50 1/11/2007 FREMONT NUMMI AUTO PLANT 27 37 9/28/1993 CL Fremont Stevenson Blvd. 20 53 7/27/2007 FREMONT USD IRVINGTON PUMP 2 60 3/25/1998 CL FREMONT VACANT LOT X 45 6/16/1993 FREMONT VACANT LOT 30 44 9/2/1993 FREMONT VARGAS ROAD 45 2/18/1997 SM/GP FREMONT WARREN & MISSION 35 35 9/2/1997 CL FREMONT X 24 31 12/15/1998 SW CL FREMONT X 19 18 1/14/1999 X FREMONT 2000 MOWRY AVENUE 36 39 2/27/1997 GP, COBBLES FRENCH CAMP CONTINENTAL GRAIN 29 180 5/31/1994 CL FRENCH CAMP X 14 83 12/9/1993 CL/SILTS Fresno 1100 block S. Chance Ave. 30 100 11/12/2008 FRESNO 2400 RAILROAD AVENUE 76 109 9/5/1997 SAND FRESNO 2400 RAILROAD AVENUE 75 93 9/8/1997 SM FRESNO 3500 SOUTH MAPLE X 35 5/8/1997 SAND,ROCK FRESNO 4100 E. SHIELDS AVENUE 20 30 9/29/1994 SW SM FRESNO 7010 N. CEDAR AVENUE 60 7/7/1997 SM FRESNO MUSCAT 85 110 10/31/1996 SW SM FLOWING FRESNO X X 85 2/3/1995 SW SM FRESNO X 65 75 2/21/1995 SW SM FRESNO X 75 85 11/25/1996 SAND GEYSER LAKE AND SONOMA COUNTY 40 9/15/1997 GEYSER PG&E X 15 10/3/1997 GP,BED ROCK GEYSER PG&E X 15 10/28/1997 GP,SM,SW GILROY 10TH & MONTGOMERY 45 45 01/20/92 GP,CL GILROY 5000 SANTA THERESA 18 24 9/21/1998 SM GILROY 700 FIRST STREET 75 140 11/18/1997

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 16 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

GILROY 8300 N. MONTEREY ROAD 52 55 12/5/1997 CL GILROY CANNERY 18 55 10/26/1998 GILROY GILROY CANNERY 22 106 9/24/1998 SAND/CL GILROY WESTHAVEN SITE 10 57 3/10/1998 SAND/CL GREENBRAE 500 SIR FRANCES DRAKE 15 3/13/1998 GREENFIELD 600 EL CAMINO REAL X 15 8/20/1998 GP SW GRIZZLY ISLAND HWY 12 3 6 8/24/1998 CL GUERNEVILLE 15000 DRAKE ROAD 8 9/15/1998 CL HALF MOON BAY 100 MAIN STREET 17 30 9/6/1998 CL, SANDS HALF MOON BAY 200 SAN MATEO ROAD 17 30 6/12/1998 SAND HALF MOON BAY SPANISH TOWN HWY 92 5 20 9/28/1998 X HAYWARD 100 C STREET X 80 4/26/1999 X HAYWARD 100 WEST WINTON AVENUE 35 70 4/7/1997 SAND/CL HAYWARD 1100 TENNYSON ROAD 35 40 12/12/1997 CL HAYWARD 19000 MEEKLAND AVENUE X 5 5/11/1999 SM CL HAYWARD 22000 WATKINS 12 18 9/6/1998 CL SW HAYWARD 22000 WATKINS N/A 17 10/22/91 X Hayward 22300 block Foothill Blvd. 17 100 1/9/2008 Hayward 2400 block American Ave 15 50 9/7/2007 HAYWARD 24000 CLAWITER 11 50 6/22/1999 CL/SAND HAYWARD 24000 MISSION BLVD. X 5 10/28/91 X HAYWARD 25000 INDUSTRIAL 12 30 4/10/1997 CL HAYWARD 2600 CORPORATE AVENUE 12.5 25 3/18/1999 CL HAYWARD 2600 CORPORATE AVENUE 5 70 6/8/1999 CL HAYWARD 29000 MOHR DRIVE 6 15 9/4/1998 CL HAYWARD 30000 INDUSTRIAL WAY 9 12 3/8/1999 CL GP HAYWARD 30000 SAN ANTIONIO STREET 25 45 9/3/1998 GP SM CL HAYWARD 30000 SAN ANTONIO STREET 10 X 8/6/1998 SW,CL HAYWARD 31000 DEPOT AVENUE 46 60 3/17/1999 CL HAYWARD 31000 HAYMAN STREET 19 25 8/20/1996 CL HAYWARD 3400 INVESTMENT BLVD 50 50 10/11/1994 X HAYWARD 3400 INVESTMENT BLVD 20 21 11/11/1996 X Hayward 3500 block of Breakwater Court 10 100 6/29/2007 HAYWARD 700 B STREET 57 119 6/7/1999 CL/SAND

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 17 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

HAYWARD A STREET & C STREET X 80 10/2/1998 CL SW HAYWARD ALICE STREET 8 14 02/13/92 CL GP SM HAYWARD FREIGHT YARD 12 20 10/10/1996 X HAYWARD HAYWARD 60 73 08/31/92 DIRT HAYWARD HAYWARD CORP YARD 25 30 8/13/1998 X HAYWARD HESPERIAN BLVD 65 70 10/24/1994 SM CL HAYWARD MISSION 11 20 8/23/1993 CS HAYWARD MISSION & HARDER 30 35 6/29/1999 CL SM HAYWARD NATIONAL AVENUE N/A 10 10/26/1994 CL HAYWARD SOUTHLAND MALL 18 35 9/2/1998 XX HAYWARD SOUTHLAND MALL 22 25 2/27/1997 CL/SILTS HAYWARD TRIPALDI DRIVE 53 60 02/16/93 X HAYWARD WARM SPRINGS & MISSION X 16 7/21/1998 CL SM HAYWARD WINTON AVENUE 25 1/20/1999 HAYWARD X 11 20 8/12/1998 N/A HAYWARD X 20 36 10/21/1994 CL HAYWARD X 20 51 5/5/1999 SAND/CL HEALDSBURG 100 DRY CREEK RD 20 40 4/4/1995 HEALDSBURG 100 DRY CREEK ROAD 20 40 7/6/1999 X Healdsburg 700 block Heron Dr. 25 42 4/16/2007 HEALDSBURG PG & E GEYERS 6 16 11/1/1994 HEALDSBURG PG&E GEYSER X 15 4/28/1999 GP,SM,CL HERCULES 4900 SAN PABLO AVENUE 35 53 4/20/1993 X HERCULES PACIFIC REFINERY 30 53.5 01/25/93 CL,WEATHER ROCK HERCULES 1300 BAYBERRY ROAD 15 15 06/25/92 CL/SM HERCULES 3800 SAN PABLO AVE 40 50 07/27/92 CL HERCULES 4900 SAN PABLO AVENUE 40 54 11/4/1994 CL,SM, SW HERCULES 500 RAILROAD AVENUE 34.5 50 11/20/92 CL/ROCK HERCULES PACIFIC REFINERY 15 55 01/20/93 X HERCULES PACIFIC REFINERY X 33.5 01/26/93 CLAY HERCULES PACIFIC REFINERY X 45 Apr-95 CL, SAND HERCULES PACIFIC REFINERY 25 50 12/11/1996 X HERCULES PACIFIC REFINERY 30 53.5 9/25/1997 CL,WEATHERBEDROCK HERCULES PACIFIC REFINERY 0 45 01/31/92 CL,SM,SW

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 18 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

HERCULES PACIFIC REFINERY 22 50 07/27/92 HERCULES PACIFIC REFINERY 10 20 08/27/92 HERCULES PACIFIC REFINERY 15 45 10/19/92 CL,ROCK HERCULES PACIFIC REFINERY 40 45 10/28/92 HERCULES PACIFIC REFINERY X 50 11/13/92 HERCULES PACIFIC REFINERY 35 53 11/20/92 HERCULES SAN PABLO AVENUE 18 25 01/07/93 CL FILL HERCULES SAN PABLO AVENUE 30 41 6/5/1996 GROUT SEAL/SANDPACK HERCULES SAN PABLO AVENUE 50 6/15/1999 HERCULES X 20 41 8/22/1996 CL/SILTS HERCULES X 15 8/17/1998 SM/CL HERLONG 1900 MAIN STREET 55 120 12/13/1996 SILTY CLAY HERLONG SIERRA ARMY DEPOT 25 25 4/22/1996 SAND HERLONG SIERRA ARMY DEPOT 30 35 11/16/1998 SM HERLONG SIERRA ARMY DEPOT NONE 20 2/11/1999 SW SM HERLONG SIERRA ARMY DEPOT 90 105 7/14/1997 SM HERLONG SIERRA ARMY DEPOT 90 105 8/4/1997 SW,SM,SILT HEWLETT PAGEMILL ROAD X 27 8/10/1994 SAND PACK HOLLISTER 2700 SAN JUAN 41 45 04/29/92 CL/SAND HOLLISTER 2700 SAN JUAN 63.5 3/18/1999 CL/SM HOLLISTER 2700 SAN JUAN ROAD 39 47 12/21/1998 CL/SM HOLLISTER MCCORMICK 85 12/30/1996 CL/SAND Hollister San Juan Rd. 21 55 1/5/2007 HOLLISTER TELEDYNE 62 65 08/25/96 CL HOLLISTER WHITAKER X 100 01/18/93 CL HOLLISTER X 160 3/8/1999 CL/SAND HOLLISTER X 105 3/5/1999 SAND/CL HOLLISTER X 37 129 12/16/1996 CL/SAND HUGHSON 2200 SANTA FE X 120 1/3/1997 SM HUNTERS POINT HUNTERS POINT 13 16 1/13/1997 GP,SW HWY 12 PG&E, L114/K 19 6 16 1/13/1997 CL KEYES X 10 51 2/17/1997 SAND/CL KEYES X 10 10 5/11/1993 SAND KINGS CANYON CHEVRON 58 65 10/12/1993 BEDROCK

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 19 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

LA HONDA ALPINE 12 35 3/8/1994 X LAFAYETTE 3600 MT. DIABLO BLVD. 9 20 9/19/1994 CL LAFAYETTE 600 MORAGA ROAD 11 20 7/13/1994 CL SM LAFAYETTE 900 MORAGA ROAD X 3 7/11/1994 SM CL LAFAYETTE ST. MARYS ROAD X 20 6/27/1994 X LAFAYETTE X 20 75 1/24/1995 CL LAKE BERRYESSA HWY 128 17-35 40 3/6/1995 CL LAKE TAHOE 3900 L. TAHOE BLVD. 15 30 4/4/1995 GP, SAND LAKEPORT BIG VALLEY CASINO 4 90 4/11/1995 CL/SAND LARKSPUR HALL MIDDLE SCHOOL 5 80 3/18/1996 CL LARKSPUR X 22 4/13/1995 FILL BEDROCK/CL LAS POSITAS SAFEWAY 14 25 2/14/1997 CL/GP Lathrop 17200 block of Murphy Parkway 13 50 6/1/2007 LATHROP DURHAM PARK 20 50 4/6/1998 CL/SAND Lathrop Mossdale Rd 16.5 150 1/27/2007 LATHROP PG&E 8 15 5/28/1997 SM LATHROP SHARPE ARMY DEPOT 17 25 3/13/1997 CL, SM LATHROP SHARPE ARMY DEPOT 6 20 10/20/1997 X LATHROP SHARPE ARMY DEPOT 20 101 03/08/89 CL LATHROP SHARPE ARMY DEPOT X 26 04/03/89 DIRT LATHROP SHARPE ARMY DEPOT 10 18 04/07/89 SM LATHROP SHARPE ARMY DEPOT 13 20 07/13/92 CLAY LATHROP SHARPE ARMY DEPOT X 90 10/08/92 SM NO-WATER LATHROP SHARPE ARMY DEPOT 15 100 11/19/92 X LATHROP SHARPE ARMY DEPOT 15 77 11/20/92 FLOWING SAND LATHROP SHARPE ARMY DEPOT 15 X 10/3/1997 LATHROP SHARPE ARMY DEPOT 15 100 6/27/1997 LATHROP SHARPE ARMY DEPOT 25 20 8/4/1998 SAND/CL LATHROP SHARPE ARMY DEPOT 10 140 8/17/1998 SAND/CL LATHROP SHARPE ARMY DEPOT 20 150 8/10/1998 SAND/CL LATHROP SHARPE ARMY DEPOT 20 15 10/28/1998 SAND LATRHOP SHARPE ARMY DEPOT 16 20 6/3/1998 X LEBEC NATIONAL CEMENT 40 35 3/5/1998 SAND/CL LEMOORE LEMOORE PONDS X 15.5 2/11/1999 SAND PACK

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 20 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

LEMOORE NAVAL AIR BASE 4 20 11/22/1997 CL,SM LEMOORE NAVAL AIR BASE 5 20 2/10/1999 CL,SM LINCOLN ATHENS RD LANDFILL 35 55 4/15/1999 LINCOLN LINCOLN LANDFILL 90 105 3/10/1999 CL LINCOLN TITAN MISSLE 20 35 3/30/1999 X LINCOLN TITAN MISSLE 25 35 7/24/1999 X LINDEN 23000 FLOOD ROAD X 16 2/10/1999 SM GP LIVERMORE 100 N MINES RD 12 X 1/17/1997 LIVERMORE 1800 PORTOLA AVENUE X 28 6/26/1999 CL LIVERMORE 1ST & LOS POSITAS 20 75 6/26/1999 CL LIVERMORE 2300 2ND STREET 45 45 4/13/1993 SM CL GP LIVERMORE 4200 GREENVILLE ROAD X 20 5/10/1993 X LIVERMORE 4900 LADD DRIVE 23 4/15/1997 GP LIVERMORE 6200 LAS POSITAS RD 12 24 3/25/1997 LIVERMORE 6200 LAS POSITAS ROAD 12 24 11/6/1996 X Livermore 900 block Bluebell Dr. 4 68 6/13/2007 Livermore 900 block Springtown blvd. 8.8 50 11/20/2007 LIVERMORE COLLIER CANYON 30-45 50 8/8/1994 GP CL SM LIVERMORE COLLIER CANYON ROAD X 3.5 8/16/1993 CL LIVERMORE E. BAY PARKS 30 40 2/14/1995 GP, COBBLES LIVERMORE FIRE STATION 7 30 54 03/02/89 SAND/CL LIVERMORE HEXCEL FACILITY 12 50 6/24/1997 SAND/CL LIVERMORE HEXCEL FACILITY 20 51 01/30/92 SAND/CL LIVERMORE LIVERMORE X 15 10/31/1994 X LIVERMORE LIVERMORE SEWAGE PONDS 5 7 3/3/1993 GP SW LIVERMORE LIVERMORE/CCC PAGE 51 25 50 5/25/1994 CL LIVERMORE STANLEY & MUIRETTA 60 75 9/26/1994 GP CL LIVERMORE TREVARNO ROAD X 11/12/1993 GP SM CL LIVERMORE ZIMMERMAN PROPERTY 8 30 02/05/92 CL LIVERMORE ZIMMERMAN PROPERTY 8 31 03/23/92 SAND/CL Lodi 12700 block N. Thornton 10 50 6/2/2008 Lodi 200 block of Pine St. 50 70 7/9/2007 LODI 800 VICTOR RD 50 50 12/29/1999 LODI 800 VICTOR ROAD 50 50 4/6/1998 X

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 21 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

LODI LAS VENAS 20 30 04/06/92 SAND, CL LODI PG&E 10 20 11/07/91 X LODI THORTON 5.5 16 05/21/92 CL LOS ALTOS HILLS MATADERO CREEK 5.5 10 12/29/1998 X LOS BANOS 200 W. PACHECO BLVD NONE 20 5/5/1999 CL SM LOS GATOS 14000 WINCHESTER BLVD. 45 45 9/11/1996 LOS GATOS 1600 LOS GATOS BLVD 50 65 5/7/1996 X LOS GATOS 1600 LOS GATOS BLVD. 14 25 5/19/1994 GP COBBLES LOS GATOS 16000 LARK AVENUE 12 27 3/2/1998 LOS GATOS 200 SARATOGA 19 22 5/18/1999 CL GP LOS GATOS 23000 SUMMIT RD X 30 12/23/1996 LOS GATOS 300 NORTH SANTA CRUZ 23 40 8/17/1993 GD CL LOS GATOS 600 NORTH SANTA CRUZ 20 35 07/14/92 SM LOS GATOS 700 BLOSSOM HILL ROAD 47 50 10/19/1994 CL GP LOS GATOS LARK & LOS GATOS BLVD X 65 7/7/1997 LOS GATOS LOS GATOS BLVD 25 25 9/8/1997 CL,GP LOS OSOS WWTP 14 69 07/20/92 CL/SAND MADERA 300 SOUTH GATEWAY ROAD 12 25 10/29/92 CL/SM MAIN PRAIRE PG&E 45 50 11/04/91 SM,CL MANTECA 1000 NORTH MAIN 16 31.5 3/30/1999 SM, FLOWING SAND MANTECA 1000 NORTH MAIN 16 36.5 5/13/1999 GP MANTECA 2000 W YOSEMITE 18 70 8/9/1994 SAND, SILT MANTECA 2000 W YOSEMITE 18 115 9/20/1996 SAND, SILT MANTECA 2000 YOSEMITE AVENUE 12.5 72 9/23/1996 SAND MANTECA DURHAM PARK 13 50 03/11/92 CL/SAND MANTECA FORMER RINO SITE 22 100 1/28/1999 SAND/CL MANTECA FRANK'S ONE STOP 14 159 9/11/1997 SAND/CL MANTECA FRANK'S ONE STOP 13 140 4/8/1999 SAND/CL MANTECA HOME DEPOT 9 60 1/20/1997 SAND/CL MANTECA HOME DEPOT 9 45 2/10/1997 SAND MANTECA MCMULLEN/PG&E 17 24 3/29/1999 SM MANTECA MCMULLEN/PG&E 5.5-8.0 16 5/13/1999 X MANTECA RAINWATER CARWASH 20 150 08/19/92 SAND/CL MANTECA SHELL SITE 19 45 4/29/1998 SAND/CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 22 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

MANTECA X 16 50 04/05/89 SAND/CL MANTECA X 18 30 1/28/1999 SAND/CL MARE ISLAND BUILDING 28 10 20 7/22/1999 GARBAGE,FILL,ROCK MARTINEZ 500 CENTER AVENUE 0 3 4/19/1994 SAND MARTINEZ 10 MOCOCO ROAD 2 2 5/20/1993 X MARTINEZ 100 SOLANO AVENUE 7 45 9/16/1994 CL/SAND MARTINEZ 100 SOLANO AVENUE 16 25 9/26/1994 CL MARTINEZ 100 SOLANO AVENUE 4'-53' 65 10/14/1994 CL MARTINEZ 1000 HOWE ROAD 5 12 8/23/1996 SAND STONE MARTINEZ 1100 ARNOLD DRIVE 35 45 7/11/1994 CL,SANDSTONE,ROCK Martinez 2800 block Waterfront Rd. 9 64 4/12/2007 MARTINEZ 2800 WATERFRONT 10 15 01/18/93 CL MARTINEZ 3600 PACHECO BLVD. 22 35 01/29/93 CL MARTINEZ 900 ARNOLD DRIVE 2 9 01/27/93 SM CL MARTINEZ 900 ARNOLD DRIVE 15 20 6/8/1993 CL,BEDROCK MARTINEZ 900 SUSANA STREET X 35 6/14/1993 CL MARTINEZ ACME LANDFILL 5 90 1/18/1995 CL MARTINEZ ACME LANDFILL 2 61 3/8/1995 CL/SAND MARTINEZ BAKER ST. PACHECO 10 10 9/8/1993 X MARTINEZ CALTRANS MACOCO 55 62 8/5/1994 MARTINEZ CALTRANS MACOCO X 40 8/8/1994 MARTINEZ EXXON 2 20 1/23/1995 SAND/CL MARTINEZ INDUSTRIAL WAY 60 61 9/14/1994 MARTINEZ MOCOCO RD 15 30 9/14/1994 BEDROCK MARTINEZ MONSANTO 13 37.5 12/7/1993 CL, SAND MARTINEZ MT. VIEW PITX 5 65 2/9/1995 SAND/CL MARTINEZ OZOL X 20 3/4/1993 BED ROCK MARTINEZ OZOL 20 20 5/22/1993 CL MARTINEZ PACHECO BLVD 10 25 8/31/1994 CL,SW,SM MARTINEZ PG & E SUBSTATION 25 40 9/21/1994 SANDSTONE MARTINEZ SHELL AVE 7 25 6/25/1994 CL,SW,SM,BAYMUD MARTINEZ SHELL AVENUE 1 11/1/1994 SM/CL MARTINEZ SHELL AVENUE 15 40 1/16/1995 SANDSTONE MARTINEZ SHELL REFINERY NONE 25 4/2/1993 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 23 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

MARTINEZ SHELL REFINERY X 30 5/13/1993 CL MARTINEZ SHELL REFINERY X 35 5/19/1993 SAND MARTINEZ SO. PACIFIC RAILROAD 14 15 02/11/93 BAY MUD MARTINEZ SOLANO WAY MARTINEZ 11 27.5 10/4/1993 SAND,CL MARTINEZ SOLANO WAY MARTINEZ 17 30.5 10/11/1993 CL,BRICK MARTINEZ VINE HILL X 50 3/18/1993 CL MARTINEZ VINE HILL 0 35 5/9/1994 BAYMUD,GARBAGE MARTINEZ VINE HILL 0 21 5/18/1994 GARBAGE, OIL MARTINEZ VINE HILL 0 60.5 6/2/1994 GARBAGE,BAYMUD MARTINEZ VINE HILL 0 60 6/10/1994 BAY MUD MARTINEZ VINE HILL LAND FILL 0 55 5/16/1994 BAY MUD MARTINEZ VINEHILL LAND FILL 0 43.5 5/9/1994 BAY MUD, GARBAGE MARTINEZ WATERBIRD WAY 20 40 9/19/1994 BAYMUD MARTINEZ WATERBIRD WAY VINEHILL 4 70 9/16/1993 X MARTINEZ WATERBIRD WAY VINEHILL 8 22 10/1/1993 BAY MUD MARTINEZ WATERBIRD WAY VINEHILL X 28 12/6/1993 UGLY STUFF MARTINEZ WATERBIRD WAY VINEHILL X 70 2/7/1994 BAY MUD,GARBAGE MARTINEZ WATERBIRD WAY VINEHILL X 60.5 2/10/1994 GARBAGE,BAYMUD MARTINEZ WATERFRONT ROAD 7 6 01/19/93 SM MARTINEZ WICKLAND OIL 12.5 30 4/30/1993 BEDROCK,CL MARTINEZ X 30 45 4/9/1993 BEDROCK MARTINEZ TOSCO REFINERY 6.5 15 3/14/1995 CL,SM Marysville 1100 block B St. 17 50 2/2/2008 MARYSVILLE 600 10TH ST. MARKET 15 28 3/31/1995 CP,SM,CL MARYSVILLE BEALE AIR FORCE BASE X 20 3/22/1995 CL MARYSVILLE FEATHER RIVER ROAD 18 36 3/21/1995 SM CL MARYSVILLE PG&E HWY 20 12 25 3/29/1995 CL MCMULLIN PG&E X 50 2/16/1996 CL,FLOWING SAND MENDOTA OPEN FIELD HWY 33 12 100 2/22/1996 CL,SAND MENLO PARK 1000 MARSH ROAD 9.5 20 7/23/1996 CL/SAND/GP MENLO PARK 300 EL CAMINO 11 20 2/26/1996 CL SM MENLO PARK 4000 CAMPBELL 12 39 9/11/1996 CL/SM MENLO PARK 4000 CAMPBELL AVENUE 5 80 9/11/1996 SAND/CL MENLO PARK 4000 CAMPBELL AVENUE 5 80 9/26/1996 CL/SAND

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 24 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

MENLO PARK 4000 CAMPBELL AVENUE 5 80 10/2/1996 CL/SAND MENLO PARK 4000 CAMPBELL AVENUE 5 87 10/21/1996 CL/SAND MENLO PARK 700 LAUREL X 65 7/2/1996 X MENLO PARK EL CAMINO REAL 46 60 7/22/1996 CL GP MENLO PARK MARSH ROAD 40 55 2/27/1996 GP CL MENLO PARK X 11 20 5/31/1996 CL SW MENLO PARK X 13 40 8/2/1996 CL/SM/GP MERCED 1200 R. STREET 39.5 40 11/26/1996 CL SM GP SW MERCED 1400 W. 16TH 37 45 10/29/1996 CL MERCED 200 ARBOLEA DRIVE 38 40 1/31/1997 GP SW SM Merced 200 block Arboleda Dr. 48 138 8/25/2008 MERCED 3000 BEACHWOOD 100 5/16/1997 SAND MERCED 3000 BEACHWOOD 43 100 5/29/1997 SAND MERCED 500 WEST 18TH X 35 1/27/1997 MERCED CASTLE AFB SANTE FE RD X 50 2/26/1997 MERCED FRANK'S ONE STOP 13 140 5/27/1997 SAND/CL MERCED J STREET 45 45 10/28/1996 CL MERCED SANTA FE ROAD 39 55 10/24/1996 SM CL MERCED WESTERN FARM SERVICES 20 77 3/15/1997 SAND/CL MERCED WESTERN FARM SERVICES 16 88 6/25/1997 CL/SAND MERCED WESTERN FARM SERVICES 18 143 7/3/1997 SAND/CL MERCED WESTERN FARM SERVICES 20 201 7/14/1997 SAND/CL MERIDIAN ARBUCKLE 5 12 8/7/1997 CL MERIDIAN SAC. DR. 56 56 8/15/1997 CL, SAND MERIDIAN SUTTER CREEK 0 15 1/28/1999 MERIDIAN SUTTERCREEK 21 29 7/29/1997 X MEYERS 2900 HWY 50 5 25 10/15/1997 MEYERS 2900 HWY 50 5 44 12/2/1997 MEYERS 2900 HWY 50 3 80 12/5/1997 MEYERS 2900 HWY 50 15 120 0/28/92 MEYERS 2900 HWY 50 6 115 02/13/92 MEYERS SHELL SITE 10 80 03/16/92 CL/SAND MEYERS SHELL SITE 10 80 03/16/92 SAND MILIPITAS 900 E CALAVERAS 12 42 03/24/89 CL,SW,SM,BAYMUD

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 25 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

MILL VALLEY 100 E. TIBURON BLVD. X 15 04/08/92 CL BEDROCK MILL VALLEY 20 CORTE MADERA 16 20 04/01/92 PORT SAND PACK MILLBRAE 1000 CRESTVIEW DRIVE 18 65 04/19/92 SM MILLBRAE 1000 CRESTVIEW DRIVE 6'-8' 62 04/21/92 SM MILLBRAE 1200 EL CAMINO REAL 5 15 04/12/92 CL/SILTS MILLBRAE CITY OF MILLBRAE 2 80 06/19/92 CL Millbrae Millbrae Ave. 5 100 1/30/2007 MILLBRAE WPCP 12 100 04/27/92 SAND/CL MILPITAS 1300 ALVISO MILPITAS 14 15 10/31/91 MILPITAS 1500 MACARTHY BLVD. 9 20 10/08/91 CL MILPITAS 1800 MACARTHY BLVD. 15 30 11/30/1998 GROUT SEAL/SANDPACK MILPITAS 200 SINCLAIR FRNTG. ROAD 11/21/91 SM CL GRAVEL MILPITAS 200 TAZMAN ROAD X 8 11/25/91 CL MILPITAS 700 MONTAGUE 15 25 10/12/91 SM CL MILPITAS 900 FRANKLIN 6.5 28 09/16/92 X MILPITAS 900 MONTAGUE EXP. 8 3/26/1998 MILPITAS CURTIS & SO. MAIN 30 55 12/16/1998 CL MILPITAS CURTIS AVENUE 20 20 08/26/92 CL MILPITAS DIXON LANDING ROAD X 15 3/25/1998 BAY MUD SM MILPITAS DIXON LANDING ROAD 20 45 8/26/1998 SAND/CL MILPITAS OLD MAIN STREET 14 25 12/02/91 CL MILPITAS PARK VICTORIA DRIVE 20 40 12/23/91 X MILPITAS SHELL SITE 10 60 7/23/1998 CL MILPITAS X X 25 07/28/92 X MILPITAS X 7 20 10/05/92 X MILPITAS X 10 18 12/18/91 CL MILPITAS X 10 40 3/30/98 SM SW CL MILPITAS X 14.5 9.5 11/17/1998 CL MILPITAS X 20 25 3/5/1998 X MILPITAS X 18 X 3/6/1998 CL MILPITAS XICOR 9 25 8/12/1998 SAND/CL MOCCASIN HWY 49 5'-6' 9 3/16/1998 FILL BOULDERS MOCCASIN MOCCASIN FISH HATCHERY 5 9 6/23/1997 MOCCASIN X 8.5 8/21/1998

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 26 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

MODESTO 3500 MCHENRY AVENUE 56 60 2/8/1999 SM Modesto 3800 block McHenry Ave 42 78 1/15/2008 Modesto 400 block McHenry Ave 45 100 6/13/2008 MODESTO 500 MCHENRY AVE 42 55 5/13/1999 SAND MODESTO 5500 STODDARD ROAD X 58.5 7/6/1999 GROUT MODESTO EMPIRE & LAPHAM 38 42 4/27/1999 SM MODESTO MODESTO TALLOW 31 100 5/14/1999 SAND/GP MODESTO TULLY & SANTA FE 8 18 2/8/1999 SM CL MOFFETT FIELD MOFFETT FIELD 21 20 7/6/1999 SILTY CLAY MOFFETT FIELD MOFFETT FIELD 7 18 7/27/1999 X MOFFETT FIELD NASA 22 29.5 7/21/1999 CL GP MOFFETT FIELD NASA AMES CENTER 6 16 1/21/1999 CL,GP,SAND MOFFETT FIELD X 8 20 5/10/1999 CL/SAND MONTE RIO HYW 116 + MAIN 30 5/14/1999 X MONTEREY 1000 DEL MONTE AVENUE 4 20 2/8/1999 SM MONTEREY 1400 DEL MONTE AVENUE 17 30 12/10/1993 CL/ROCK/SW MONTEREY FORT ORD 15 100 7/23/1999 SAND MORAGA 300 RHEEM BLVD. 0 60 11/9/92 SM CL MORAGA X 10 50 12/13/91 CL MORGAN HILL 17000 MONTEREY STREET 35 75 5/5/1998 MORGAN HILL BARNETT & 101 18 22 6/14/1999 GP SM CL MORGAN HILL E DUNNE AVE 45 45 11/19/1998 GP,CL MORGAN HILL EDES AVE, BUS YARD 20 75 10/8/1997 X MORGAN HILL SAN PEDRO & CHURCH 18 20 5/19/1997 CL GP MORGAN HILL SHELL SITE 12 120 2/28/1997 CL/SAND MORGAN HILL SHELL SITE 12 141 3/3/1997 CL MOSS BEACH 800 BLOCK AIRPORT X 95 3/4/1997 MOSS BEACH EL GRANADA 20 110 3/3/1997 MOSS LANDING MOSS LANDING POWER PLANT 15 104 4/27/1993 SAND/CL MOSS LANDING MOSS LANDING POWER PLANT 21 90 6/3/1993 SAND/CL MOSS LANDING PG&E X 75 5/14/1997 SM CL SW MOSS LANDING PG&E 12 30 4/19/1993 SM,CL,SW MOSS LANDING PG&E 18 30 6/8/1994 SM,SW,CL MOSS LANDING PG&E 13 20 02/18/93 CL, SW

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 27 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

MOSS LANDING PG&E 15 60 3/8/1993 SAND MOSS LANDING PG&E X 30 3/16/1993 SM, CL MOUNTAIN VIEW ORTEGA AVENUE 11 45 11/14/1996 CL/SAND MOUNTAIN VIEW SANTA CLARA CO. PG. 52 N/A 11 3/13/1995 SM SW MOUNTAIN VIEW SCC/ PG. 45 C-6 22-25 43 3/13/1995 N/A MOUNTAIN VIEW 100 EAST EVELYN AVENUE 6 5/3/1993 MOUNTAIN VIEW 100 FERGUSON BLVD 12 31 10/8/1993 GP CL MOUNTAIN VIEW 1100 EL CAMINO REAL 40 48.5 07/29/92 GP,CL MOUNTAIN VIEW 1200 MIDDLEFIELD 6 10 3/29/1994 SM CL MOUNTAIN VIEW 1200 W. EL CAMINO REAL 15 40 10/12/1994 M/A MOUNTAIN VIEW 1300 CRITTENDEN 35 39 9/20/1994 GP SW SM CL MOUNTAIN VIEW 1300 CRITTENDEN 13 15 8/29/1994 CL MOUNTAIN VIEW 1300 MIDDLEFIELD 13 15 3/30/1994 SM CL MOUNTAIN VIEW 1300 VALLEY VISTA DRIVE 35 50 11/3/1993 SM CL MOUNTAIN VIEW 1600 PLYMOUTH ST 14 44 8/18/1997 MOUNTAIN VIEW 1600 PLYMOUTH STREET 6 25 4/16/1993 SAND/CL MOUNTAIN VIEW 1600 PLYMOUTH STREET 6 25 10/8/1996 CL MOUNTAIN VIEW 1600 PYRAMID ST 5 22.5 8/20/1998 SANDS, GP MOUNTAIN VIEW 2400 CHARLESTON ROAD 12 50 10/3/1994 CL MOUNTAIN VIEW 2400 CHARLSTON RD 6 10 11/11/91 SM,CL MOUNTAIN VIEW 2500 GARCIA AVE 4 15 12/11/1996 CL MOUNTAIN VIEW 2600 MARINE WAY 20 66 9/18/1997 X MOUNTAIN VIEW 2600 MARINE WAY 22 5/6/1993 MOUNTAIN VIEW 300 ELLIS ROAD 21 35 9/24/1993 CL/SAND MOUNTAIN VIEW 300 ELLIS STREET X 80 1/20/1995 SM,CL MOUNTAIN VIEW 300 ELLIS STREET 30 46 4/28/1997 GROUT SEAL,SAND MOUNTAIN VIEW 300 ELLIS STREET 45 7/17/1996 MOUNTAIN VIEW 300 ELLIS STREET 40 10/25/1994 MOUNTAIN VIEW 300 ELLIS STREET 25 35 9/16/1996 CL/GP MOUNTAIN VIEW 300 ELLIS STREET 15 25 2/5/1997 GROUT SEAL/SANDPACK MOUNTAIN VIEW 300 ELLIS STREET 15 33 03/25/92 CONCRETE/SANDPACK MOUNTAIN VIEW 300 ELLIS STREET 15 40 01/24/92 MOUNTAIN VIEW 300 ELLIS STREET 20 26 05/08/92 SANDSTONE MOUNTAIN VIEW 300 ELLIS STREET 20 30 07/23/92 GROUT/SANDPACK

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 28 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

MOUNTAIN VIEW 300 ELLIS STREET 25 44 1/19/1999 CL/SM/GP MOUNTAIN VIEW 300 ELLIS STREET 76 11/5/1997 SM/GP MOUNTAIN VIEW 300 ELLIS STREET 5 12/22/1997 MOUNTAIN VIEW 300 ELLIS STREET 20 72 03/28/92 SM MOUNTAIN VIEW 300 FERGUSON 15 30 07/16/92 CL,SM,SW MOUNTAIN VIEW 300 FERGUSON 23 45 08/24/92 FLOWING SAND GP MOUNTAIN VIEW 400 NATIONAL AVENUE 15 35 6/21/1994 CL MOUNTAIN VIEW 400 NATIONAL AVENUE 15 36 4/22/1994 GROUT/SANDPACK MOUNTAIN VIEW 500 ELLIS STREET X 13 1/23/1995 CL MOUNTAIN VIEW 500 ELLIS STREET 10 30 2/20/1995 X MOUNTAIN VIEW 500 SHOWERS DRIVE 8 8 1/24/1997 GP SM CL MOUNTAIN VIEW 800 ALTA 14.5 25 6/3/1993 X MOUNTAIN VIEW 800 SHORELINE 3 25 8/20/1998 MOUNTAIN VIEW AIR PRODUCTS SITE 14 30 9/29/1997 CL MOUNTAIN VIEW ARCO 2010 8 44 4/19/1995 CL/SAND MOUNTAIN VIEW AVIENDA 6 15 10/7/1994 SM CL MOUNTAIN VIEW CASEY AVENUE 8 108 10/6/1997 CL MOUNTAIN VIEW COSTCO 5 26 1/16/1995 CL/SAND MOUNTAIN VIEW FERGUSON DRIVE N/A N/A 4/8/1995 SM CL MOUNTAIN VIEW FREMONT AVE 98 100 9/17/1998 MOUNTAIN VIEW GTE 300 FERGUSON DR. 21 42 01/10/92 CL MOUNTAIN VIEW KAISER 15.5 22 04/18/89 GP, SAND MOUNTAIN VIEW KAISER 10 20 10/23/91 CL MOUNTAIN VIEW L. AVENIDA 7 20 05/01/92 CL MOUNTAIN VIEW LAVENIDA & MACON 8 15 3/28/1994 SM CL MOUNTAIN VIEW MOFFETT AFB 8 43 6/3/1999 MOUNTAIN VIEW MOFFETT FIELD 6 16 8/26/1998 CL,GP,SAND MOUNTAIN VIEW MOFFETT FIELD 6 55 9/30/1996 CL/SAND MOUNTAIN VIEW MOUNTAIN VIEW 12 3 3/9/1995 SM CL MOUNTAIN VIEW MOUNTAIN VIEW 4 15 11/13/92 CLAY MOUNTAIN VIEW PLYMOUTH ST 5 22 04/16/92 CL,SILTS MOUNTAIN VIEW SAN ANTONIO AVENUE 6 110 3/5/1993 CL/SAND MOUNTAIN VIEW SHORELINE AMPHITHEATRE 13 15 4/28/1994 FILL GP CL MOUNTAIN VIEW SHORELINE AMPHITHEATRE X 20 5/9/1994 SM CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 29 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

MOUNTAIN VIEW SUN MICROSYSTEMS 8 110 02/16/93 SAND/CL MOUNTAIN VIEW X 40 42 10/8/1996 CL MOUNTAIN VIEW X X 15 10/19/1996 CL N. CLAIFORNIA X 20 60 06/01/92 CL NAPA 2800 NAPA 1ST STREET 7 33 9/12/1994 X Napa 100 block Trancas St. 12 50 12/15/2007 NAPA 100 SOSCOL 14 25 2/22/1999 SM NAPA 1000 3RD STREET 14 22 3/24/1993 CL SM GP NAPA 1000 KAISER ROAD 14 26 11/20/1998 CL SW NAPA 1800 LINCOLN AVENUE X 16 3/23/1993 CL GP NAPA 1800 SILVERADO TRAIL 25 35 10/4/1994 CL, BEDROCK NAPA 1800 SILVERADO TRAIL 19 23 11/1/1993 X NAPA 1ST & MAIN 30 15 04/06/92 SM/CL NAPA 2000 AIRPORT ROAD 15 30 10/5/1994 BAY MUD NAPA 2000 AIRPORT ROAD 15 21 7/29/1997 CL NAPA 2000 REDWOOD ROAD 5 20 10/28/91 GP SM CL NAPA 2300 JEFFERSON STREET 10 20 08/26/92 CL NAPA 2400 CONDESA STREET 8 15 1/15/1997 X NAPA 2400 IMOLA 7 20 5/8/1998 CL NAPA 2800 1ST ST 7 33 9/23/1994 NAPA 3000 JEFFERSON STREET 8 15 11/13/1998 X NAPA 3RD & MAIN STREET 12 20 1/7/1998 CL NAPA 500 GREEN ISLAND ROAD 13 25 8/1/1996 GROUT SEAL/SANDPACK NAPA 6000 STEELE CANYON ROAD 15-20 30 8/15/1997 CL NAPA 8TH & RIVER STREET 11 8/21/1996 NAPA 900 3RD STREET 10 21 6/19/1996 GROUT SEAL/SP NAPA 900 8TH STREET 10 20 7/8/1998 CL/GP NAPA AMERICAN CANYON LAND FILL 13 15 2/4/1999 CL GP NAPA KAISER ROAD 12 22 3/20/1998 CL NAPA KAISER ROAD 8 25 2/2/1999 GP SW NAPA LEE STREET 12 24 1/13/1998 CL SW NAPA LINCOLN & JEFFERSON 8 20 07/31/92 CL GP NAPA LINCOLN & JEFFERSON 8 20 7/28/1999 CL GP NAPA MAIN STREET X 15 2/4/1999 SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 30 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

NAPA NORTH KELLY ROAD X 20 02/18/93 ROCKS,CL NAPA RIO DEL MAR 9 13 02/27/92 CL NAPA SALVADOR 13 23 01/08/92 SM NAPA SOLANO CO. Page 12 10 25 6/15/1998 CL NEVADA SHELL, PRATER RD. SPARKS 8 10 08/29/96 SM,BOULDER NEWARK 1300 ENTERPRISE DRIVE X 25 9/7/1994 SM CL NEWARK 36000 NEWARK BLVD. 8 20 7/30/1996 CL/SM NEWARK 37000 CEDAR BLVD 13 36 02/19/93 CL NEWARK 37000 CEDAR BLVD 10 45 2/9/1999 SAND,GROUT NEWARK 37000 CEDAR BLVD. 14 25 02/17/93 SM NEWARK 37000 CEDAR RD 40 105 9/19/1996 CL,GP NEWARK 37000 SYCAMORE AVE 8 22.5 12/10/1998 CL,SM,SW NEWARK 37000 SYCAMORE ST 9 23 7/9/1999 NEWARK 37000 SYCAMORE STREET X 10 12/17/1993 CL GP NEWARK 37000 SYCAMORE STREET 12 20 9/19/1994 SAND Newark 37500 block Willow St. 1 100 6/29/2007 NEWARK 38000 CHERRY STREET 15 95 12/11/1997 CL/SM NEWARK 38000 CHERRY STREET 4 28 3/19/1993 SM NEWARK 6700 MOWRY AVENUE 15 28 2/13/1995 CL, SAND, BAYMUD NEWARK 6800 ROBERTSON 15 30 2/13/1995 SW SM CL NEWARK 6800 SMITH AVENUE 13 X 9/7/1993 CL SM NEWARK 800 ENTERPRISE DRIVE X 5 6/8/1994 CL & SILT NEWARK 8000 ENTERPRISE DRIVE 16 20 02/09/93 NEWARK 8600 ENTERPRISE DRIVE 25 6/18/1994 SW GP CL NEWARK BORDEN CHEMICAL 2 100 5/10/1993 SAND/CL NEWARK CEDAR BLVD. 20 62 9/18/1996 CL/SAND/GP NEWARK CIVIC TERRANCE AVENUE 9 58 02/17/93 SM Newark Enterprise Ave. 8400 block 2 50 1/12/2007 NEWARK INTERPRISE DRIVE 2 20 10/22/92 GROUT SEAL/SANDPACK NEWARK ROBERTSON AT CHERRY 8 8 07/29/92 SM NEWARK UNOCAL 35 40 06/15/92 X NEWARK X 6 40 2/27/1997 SM CL NOVATO MARIN CO./ PG. 1 F-3 7 15 7/29/1996 SM CL NOVATO 1700 SAN MARTIN 4 31 7/22/1996 CL, ROCK

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 31 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

NOVATO 2000 NOVATO RD 5.5 20 10/25/1996 CL,GP NOVATO 6900 REDWOOD BLVD 7 17 5/26/1994 SM BAY MUD NOVATO 8900 REWOOD HWY. 8-Jan 30 2/7/1997 NOVATO HAMILTON AFB 8 16 10/28/1996 BETONITE,SAND NOVATO HAMILTON AFB 6 26.5 11/13/1996 NOVATO HAMILTON AFB 6 26.5 9/27/1996 SM,SW,CP,CL,ROCK NOVATO HAMILTON AIR FORCE BASE 10 20 5/17/1993 COBBLES/SM BM NOVATO HAMILTON AIR FORCE BASE 8 12 6/23/1994 X NOVATO HAMILTON AIR FORCE BASE X 19 4/26/1996 X NOVATO HAMILTON AIR FORCE BASE 15 25 4/29/1996 SM,BAY MUD NOVATO HAMILTON AIR FORCE BASE 8 23 7/25/1996 CL NOVATO HAMILTON AIR FORCE BASE 13 25 9/10/1996 ROCK,STIFF CLAY NOVATO HAMILTON AIR FORCE BASE 6 26.5 9/16/1996 GP, ROCK, CL NOVATO NOVATO 5-25 25 9/9/1996 SW CL NOVATO X 5 40 3/10/1997 SAND/CL OAKDALE 300 EAST F STREET X 25 7/31/1997 OAKLAND 4600 MARTIN LUTHER KING 25 30 1/11/1999 X OAKLAND DENNISON & LIVINGSTON 15 25 3/4/1998 X OAKLAND 100 5TH ST 8 25 6/12/1996 OAKLAND 100 5TH ST. SHELL 9 17 3/9/1999 SW, SM, CL OAKLAND 100 BURNA ROAD X 21.5 2/13/1997 CL OAKLAND 1000 9TH STREET 17 20 6/20/1994 CL/SM Oakland 1000 block Calcot Pl. 11 70 8/14/2007 OAKLAND 10000 MACARTHUR BLVD. 5 12 1/12/1998 CL SM OAKLAND 105TH STREET 14 75 2/5/1999 OAKLAND 1100 57TH AVENUE 10 14 2/9/1998 CL SM OAKLAND 1100 5TH STREET 4 20 2/22/1994 SAND/BAYMUD OAKLAND 1100 5TH STREET 5 20 5/10/1994 GP/CL OAKLAND 1100 98TH AVENUE 7 15 5/10/1994 SM CL Oakland 1100 block 5th St. 5.5 50 7/25/2008 OAKLAND 1100 E. 12TH STREET 10 29 1/20/1999 PORLAND,SM OAKLAND 1100 MARITIME STREET 9.5 15 3/30/1995 SM CL OAKLAND 1100 SEMINARY AVENUE 8 20 2/1/1995 SM OAKLAND 1200 7TH STREET 11 15 2/10/1998 SM CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 32 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

OAKLAND 12TH STREET 6 25 4/13/1998 CL SW GP OAKLAND 1300 14TH STREET 14 14 2/14/1997 CL, BAYMUD OAKLAND 1300 WOOD STREET 3 25 1/7/1999 GP,GARBAGE OAKLAND 13TH & WEBSTER 10 20 5/15/1997 CL SW SM OAKLAND 1400 HARRISON 20 25 11/16/92 SW SM OAKLAND 15TH & CLAY 30 30 3/30/1998 SM CL OAKLAND 1600 7TH STREET 35 45 4/28/1998 X Oakland 1600 block W. Orand 7.7 60 3/3/2007 OAKLAND 1700 E. SHANE 10 15 12/13/1998 CL OAKLAND 1700 MIDDLE HARBOR ROAD 8 5/11/1993 OAKLAND 1700 MIDDLE HARBOR ROAD 12 5/23/1993 OAKLAND 1700 MIDDLE HARBOR ROAD 16 8/16/1993 OAKLAND 17TH & SAN PABLO 11 20 8/28/1996 CL SM OAKLAND 1900 TELEGRAPH AVENUE 6 15 12/18/91 CL SM OAKLAND 200 27TH STREET 4 10 9/18/1997 CL SW BAYMUD OAKLAND 200 HAGENBERGER 10 20 7/29/1999 BAYMUD OAKLAND 200 HEGENBERGER 20 25 11/25/91 CL SM OAKLAND 200 HEGENBERGER 5 15 1/20/1995 OAKLAND 200 W. MACARTHUR 8 15 8/18/1997 SW OAKLAND 2000 GRAND AVENUE 5 12 10/25/1993 SEAL/SP OAKLAND 2200 BROADWAY X 30 9/17/1996 X OAKLAND 2300 MAGNOLIA STREET 24 6/20/1994 CL/SM OAKLAND 2400 POPLAR 25 30 1/26/1998 SM GP CL OAKLAND 246 14TH STREET 21 24 4/1/1998 SW SM CL OAKLAND 2500 POPLAR STREET 14 15 9/1/1994 CL/SM OAKLAND 2500 WOOD STREET 40 65 8/11/1997 X OAKLAND 2600 TELEGRAPH AVENUE 20 31 8/2/1994 CL/SM OAKLAND 2600 TELEGRAPH AVENUE 20 35 1/30/1995 SM OAKLAND 2800 E. 9TH STREET 12 15 3/31/1998 SM CL OAKLAND 2800 POPLAR AVENUE 10 20 4/4/1997 X OAKLAND 2800 POPLAR STREET 12 19 05/26/92 CL OAKLAND 2900 FRUITVALE AVENUE 5 60 1/28/1998 X OAKLAND 300 5TH AVENUE & 7TH 6 15 1/22/1999 BAYMUD Oakland 300 block Hawthorne Ave 47.6 100 1/2/2008

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 33 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

OAKLAND 300 HIGH STREET 7 18 10/17/1997 SM OAKLAND 300 UNION 6 15 7/30/1998 CL OAKLAND 3000 35TH AVENUE X 18 6/11/1996 X OAKLAND 3100 EAST 9TH STREET 5 20 6/1/1998 CL OAKLAND 3200 LAKESHORE AVENUE 6 19 4/3/1997 CLAY OAKLAND 3300 LAKESHORE AVE 7 51 05/20/92 CL OAKLAND 34TH & ETTIE 12 40 12/21/1998 X OAKLAND 3500 14TH 19 25 8/21/1997 X OAKLAND 3800 BROADWAY 34 40 5/17/1994 CL OAKLAND 38TH STREET 10 22 6/8/1994 CL/SILTS OAKLAND 3900 ALAMEDA AVENUE 14 15 10/10/1994 CL OAKLAND 400 25TH STREET X 15 8/5/1998 X OAKLAND 400 43RD ST 15 50 01/11/93 OAKLAND 400 HIGH STREET 9 21 4/28/1998 SW SM CL OAKLAND 400 TIDEWATER AVE 8 15 01/15/92 GP SW CL OAKLAND 4000 BROADWAY 5 9 4/23/1996 SM CL OAKLAND 4000 BROADWAY 9 21 9/28/1998 SM CL OAKLAND 4000 BROADWAY 13 20 5/12/1993 X OAKLAND 4000 PARK BLVD 16 28 12/24/91 CL SW GP OAKLAND 4400 FOOTHILL BLVD. 3 5 10/26/92 GP SM SW OAKLAND 4400 FOOTHILL BLVD. 15 20 10/11/1994 GP/CL OAKLAND 4400 TELEGRAPH 10 23 02/03/93 SAND PACK OAKLAND 4700 MARTIN LUTHER KING 33 4/20/1993 OAKLAND 4800 OAKPORT X 20.5 8/29/1997 GROUT,SAND PK OAKLAND 4TH AND OAK STREET 14 15 2/17/1999 CL SM OAKLAND 50 MARKET STREET 6 20 01/27/93 GARBAGE,SAND OAKLAND 500 12TH STREET 16 40 5/20/1996 GROUT SEAL,SAND OAKLAND 500 E. 8TH 7 17 2/24/1997 GP CL OAKLAND 500 HEGENBERGER ROAD 9 20 10/6/1993 CL OAKLAND 500 HEGENBERGER ROAD 7'-9' 25 5/2/1994 FILL CL/SAND OAKLAND 500 HIGH STREET 15 25 2/17/1998 SM CL OAKLAND 5200 COLESIUM WAY 19 19 5/19/1993 BAY MUD OAKLAND 5200 TELEGRAPH AVENUE 9 12 11/11/1996 SM CL OAKLAND 5400 E. 14TH STREET X 19 8/18/1994 CL SW SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 34 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

OAKLAND 5400 TELEGRAPH AVE 4 50 8/5/1998 X OAKLAND 5700 MARTIN LUTHER KING JR 4 15 2/2/1999 BAYMUD SW OAKLAND 600 29TH AVENUE 10 30 8/30/1994 CL OAKLAND 66TH OAKPORT 15 X 3/9/1993 OAKLAND 700 107TH AVENUE X 30 2/13/1997 CL OAKLAND 700 22ND ST 12 25 9/16/1998 FILL,CL,SM,SW OAKLAND 700 46TH AVENUE 6 15 9/13/1994 CL/SM Oakland 7200 block Bancroft 14 60 4/27/2007 OAKLAND 73RD AVE 11.5 40 3/15/1993 OAKLAND 7900 E 14TH ST 25 30 4/18/1995 OAKLAND 7TH STREET 6 8 12/1/1997 OAKLAND 800 42ND AVE 15 20 6/29/1999 OAKLAND 800 42ND AVE 10 22 7/27/1998 GROUT,SAND OAKLAND 800 42ND AVE 56 60 1/27/1999 SW,SM,GP OAKLAND 800 42ND AVENUE 16.5 7/30/1997 CL OAKLAND 800 42ND AVENUE 8 30 8/1/1994 CLAY OAKLAND 800 75TH STREET 19 20 3/14/1996 SM, CL OAKLAND 800 92ND AVENUE 10 12 4/26/1999 SM CL SW OAKLAND 800 DOOLITTLE DRIVE 15 17.5 5/11/1994 SM CL GRAVEL OAKLAND 8300 E. 14TH STREET X 85 9/12/1994 SM,CL OAKLAND 8300 EAST 14TH STREET 13 15 1/12/1998 CL OAKLAND 89TH AVENUE 10 20 07/27/92 CL OAKLAND 900 81ST AVENUE 13 22 3/5/1998 CL GP OAKLAND 900 81STREET X 16 8/18/1998 X OAKLAND 900 87TH AVENUE 12 20 6/10/1999 SM CL SW OAKLAND 900 88TH AVENUE 14 14.5 10/22/1996 SM CL OAKLAND 900 WASHINGTON 35 60 2/12/1997 OAKLAND 9000 E. 14TH 8.5 20 8/5/1997 CL OAKLAND 9200 SAN LEANDRO BLVD. 23 30 3/23/1998 CL OAKLAND 9TH ST. & BROADWAY 4 15 8/7/1997 SM OAKLAND AIRPORT DRIVE 8 15 7/2/1999 CL SM BAY MUD OAKLAND BERTHS 57/58 PORT OF OAKLAND 5 82 7/1/1996 CL/SAND OAKLAND BRIDGE BAY 7 65 2/20/1995 SM OAKLAND BROADWAY & 9TH 12 25 07/01/92 SW

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 35 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

OAKLAND COURT HOUSE 8 20 8/12/1997 SW SM OAKLAND DEL MONTE PLANT 10 16 3/13/1997 CL SM OAKLAND DURANT SQUARE 20 35 3/12/1996 CL OAKLAND EAST 14TH AND 73RD 12 55 1/20/1999 CL SM Oakland Edes & 105th Ave. 17.4 50 2/8/2007 OAKLAND EMBARCADERO 15.5 24 1/11/1999 GP OAKLAND EMBARCADERO & DENNSION 8 20 12/28/1999 BM CL OAKLAND FORMER ECCHOE SALES 5 78 2/5/1996 CL OAKLAND GALBRAITH GOLF COURSE 22 30 12/18/1998 SM CL SW OAKLAND GOLF COURSE 4 39.5 2/11/1998 SM CL SW OAKLAND GREEN CITY LOFTS 8 50 6/14/1996 SAND/CL OAKLAND HARRISON STREET 8.5 13 12/27/1993 SW SM Oakland Hawthrone & Elm St. 15 80 6/20/2008 OAKLAND HERTZ RENTAL 36 45 9/10/1997 GP SM OAKLAND HIGH STREET 12 25 9/26/1997 CL SM OAKLAND HIGH STREET 5.5 8.5 10/24/1997 SM CL OAKLAND HIGH STREET 13 25 11/11/1997 SM CL SW OAKLAND HIGH STREET 15 40 1/21/1999 GP OAKLAND HIGH STREET 6 35 1/7/1999 CL OAKLAND HOWARD SHIPPING,MARKET X 60 10/27/1993 SAND OAKLAND JACK LONDON SQUARE 12 20 8/25/1997 COBBLES, GARBAGE OAKLAND KAISER WAKE AVENUE 5 12.5 7/26/1999 GP,SM OAKLAND KDIA RADIO TOWER 3 50 10/3/1996 BAY MUD OAKLAND MACARTHUR & SANTA CLARA 6 9 3/3/1998 CL GP SM OAKLAND MACK TRUCK 6.5 22 4/9/1999 CL,SM,GP Oakland Maritime St. 6 75 7/12/2007 OAKLAND MCARTHUR 7 15 5/28/1997 CL, GP OAKLAND MIDDLE HARBOR ROAD 40 50 8/7/1997 SM SW OAKLAND NAVA SUPPLY 4 15 3/9/1999 BAY MUD,GARBAGE OAKLAND NAVAL BASE 5 21 8/21/1997 X OAKLAND OAKLAND AIRPORT 15 31 4/21/1998 X OAKLAND OAKLAND AIRPORT 9 25 1/27/1999 SANDS,BAYMUD OAKLAND OAKLAND AIRPORT 30 1/9/1996 SAND Oakland Oakland Airport 5 50 5/5/2007

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 36 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

OAKLAND OAKLAND ARMY BASE 3.5 5.5 2/24/1997 GP CL OAKLAND OAKLAND ARMY BASE 10 15 6/8/1993 SM CL Oakland Pandee Rd. & Swan Way 8.5 34 9/29/2007 OAKLAND PARDEE & EDGEWATER 9 40 1/12/1996 SAND/CL OAKLAND PORT OF AOKLAND 7TH ST 4.5 12 05/11/92 CL SW SM GP OAKLAND PORT OF OAKLAND 8 13 9/11/1997 CL SM OAKLAND PORT OF OAKLAND 8 15 3/13/1997 GP/OIL OAKLAND PORT OF OAKLAND 13 25 12/11/1997 SW SM BAY MUD OAKLAND PORT OF OAKLAND 15 25 1/26/1998 X OAKLAND PORT OF OAKLAND 8 40 7/5/1994 BAYMUD OAKLAND PORT OF OAKLAND 6 40 2/22/1995 CL/SAND OAKLAND PORT OF OAKLAND 0 53 2/27/1995 SAND/CL OAKLAND PORT OF OAKLAND BERTH 35 10 27 7/23/1999 FILL/BAYMUD OAKLAND PORT OF OAKLAND/MARITIME 27 35 5/19/1997 SW SM OAKLAND POSEY TUBE 1 104 2/27/1995 CL/SAND OAKLAND SHELL 610 MARKET STRET 5 25 6/3/1999 X OAKLAND SHIP YARD 12TH STREET 7 60 1/21/1999 BAY MUD, SAND OAKLAND SHIPYARD 7 60 12/13/1998 SAND,BAYMUD OAKLAND SUMMIT MEDICAL CENTER 14 16 12/2/1996 CL, SM OAKLAND TELEGRAPH AVENUE 23 35 12/15/1997 GP SW SM CL OAKLAND UNION STREET X 25 07/24/92 SM SW GP OAKLAND WEBSTER TUBE 5 80 7/23/1996 SAND OAKLAND WEST GRAND AVENUE X 29 5/3/1994 X OAKLAND X 25 30 9/9/1997 CL OAKLAND X 4 10 9/8/1997 CL SM OAKLAND X 10 45 11/18/1997 SM CL OAKLAND X 14 25 12/16/1997 GL GP SM OAKLAND X 10 20 04/21/89 BAY MUD OAKLAND X 20 30 12/9/1998 BAY MUD OAKLAND X 17 20 3/2/1998 X OAKLAND X 11.5 40 5/21/1996 X OAKLAND (AIRPORT) HANGER 8 & 9 6 20 7/30/1996 BAYMUD OAKLEY 1100 FETZER LANE 15 30 8/5/1996 Oakley 400 block Walnut Meadows Dr. 2 60 3/2/2007

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 37 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

OAKLEY BALFOUR & FAIRVEIW 31 35 8/5/1996 SM CL Oakley Big Break Rd. 5 100 2/8/2008 OAKLEY LAUREL & O'HARA 6 12 8/1/1996 SM OAKLEY LAUREL RS. 14 40 11/15/1996 SAND/CL OAKLEY LAUREL SUB. SITE 12 40 10/16/1996 CL/SAND Oakley Live Oak & Hwy 4 11 50 7/6/2007 OAKLEY PG & E 19 100 10/17/1996 SAND/CL ORANGEVALE 8600 GREENBACK LANE 35 12/4/1996 SM/SW ORANGEVALE 8600 GREENBACK LANE 48-50 53 1/2/1997 SAND/GP/CL ORANGEVALE 8600 GREENBACK LANE 35 1/6/1997 SAND/GP/CL/ROCK ORANGEVALE CABLE PARK 41 63 1/13/1997 SAND OREGON SAVAGE RAPIDS DAM 3 21 1/21/1997 GP, COBBLES ORINDA BEAR CREEK ROAD X 40 1/22/1997 GP,CL ORINDA GATEWAY BLVD. 20 30 1/22/1997 BEDROCK ORINDA PGE SOBRANTE 30 40 2/7/1997 X ORLAND CASTILLO STATION NONE 16 2/17/1997 ORLAND GAS STATION NO WATER 12 3/12/1997 CL ORLAND ORLAND NO WATER 40 3/27/1997 UNKNOWN ORLAND ORLAND CLEANERS 15 120 4/8/1997 ORLAND SVEY STATION 10 12 3/11/1997 ORLAND SVEY STATION 8 12 3/17/1997 OXNARD PORT HUENEME X 41.5 4/16/1997 CL Pacheco 5000 block Pacheco Blvd. 7.5 30 4/10/2007 PACIFICA 70 AURA VISTA 6 25 5/7/1997 SW SM CL PALO ALTO 300 PAGE MILL ROAD 12 14 4/13/1998 CL, GP PALO ALTO 300 PAGE MILL ROAD 20 45 4/15/1998 BACKFILL,CL PALO ALTO HEWLETT PACKARD 13 18 8/27/1998 N/A PALO ALTO 101 & SAN ANTONIO NONE 8 3/10/1998 CL SM PALO ALTO 1500 PAGEMILL ROAD X 30 02/21/92 SM CL PALO ALTO 1500 PAGEMILL ROAD X 60 02/28/92 CL PALO ALTO 1500 PAGEMILL ROAD 20 68 04/27/92 CL CP PALO ALTO 1900 BAY RD. 4 6 6/16/1998 CL PALO ALTO 1900 UNIVERSITY AVENUE 16 20 3/31/1998 X PALO ALTO 200 LYTTON AVENUE X 30 12/1/1997 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 38 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

PALO ALTO 2200 EL CAMINO REAL 15 38 10/13/1997 CL GP PALO ALTO 2700 ASH STREET 9.5 14 07/29/92 X PALO ALTO 2700 MIDDLEFIELD RD 7 20 10/23/1998 CL,SW,SM PALO ALTO 30 ENCINAL STREET X 12 12/8/1997 GP CL PALO ALTO 300 PAGEMILL ROAD 20 38 8/11/1997 GP CL PALO ALTO 300 PAGEMILL ROAD 27 32 9/24/1997 X PALO ALTO 3100 PORTER DRIVE 8 15 8/1/1997 CL SW SM GP PALO ALTO 3100 PORTER DRIVE 20 35 8/27/1997 GP CL PALO ALTO 3100 PORTER DRIVE 19 21 10/1/1997 CL GP PALO ALTO 3200 HANOVER STREET 22 37 06/18/92 CL PALO ALTO 3200 MIRANDA AVENUE 40 47 10/6/1997 CL GP PALO ALTO 3200 MIRANDA DRIVE X 20 12/9/1997 CL SAND GRAVEL PALO ALTO 3300 HILLVIEW AVENUE 15 32 7/31/1998 GROUT SEAL/SANDPACK PALO ALTO 3400 HILLVIEW AVENUE 25 35 8/28/1998 GROUT SEAL/SANDPACK PALO ALTO 3800 EL CAMINO REAL X 36.5 12/20/1997 CL GP PALO ALTO 3800 EL CAMINO REAL 28 30 12/23/1997 CL SM PALO ALTO 3800 FABIAN WAY 8 62 6/8/1998 SM PALO ALTO 3900 MIDDLEFIELD ROAD 8 21 10/12/1998 GROUT SEAL/SANDPACK PALO ALTO 4000 TRANSPORT STREET 40 65 5/9/1997 CL Palo Alto 600 block Page Hill Road 21 65 8/11/2008 PALO ALTO 600 HANSEN WAY X 20 03/02/92 GP CL DP PALO ALTO 600 HANSEN WAY X 52.5 03/24/92 GP CL PALO ALTO 600 HANSEN WAY X 67 03/26/92 CL GP SW SM PALO ALTO 600 HANSEN WAY 95 97 06/02/92 GP SM CL PALO ALTO 600 PAGEMILL ROAD 24 32 9/16/1997 SW PALO ALTO 600 PAGEMILL ROAD 10 18.5 3/23/1998 GP SM CL SW PALO ALTO 800 EAST CHARLESTON 5 20 8/5/987 GROUT SEAL/SANDPACK PALO ALTO 900 PAGEMILL ROAD X 18 9/16/1997 GP SW SM CL PALO ALTO 900 PAGEMILL ROAD 30 50 12/17/1997 SAND PALO ALTO ARCO 1326 10 60 1/25/1999 CL/SAND PALO ALTO BAY ROAD 13 20 8/3/1998 ROCK CLAY PALO ALTO CAMPUS DRIVE X 50 11/27/91 X PALO ALTO DEER CREEK X 46 11/15/91 BEDROCK PALO ALTO EMERSON & LYTTON X 30 12/18/1997 GP CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 39 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

PALO ALTO FORD AEROSPACE 10 107 3/23/1998 SAND/CL PALO ALTO FORD AEROSPACE 10 100 12/29/1998 CL PALO ALTO HANOVER STREET 23 33 10/29/1997 CL GP PALO ALTO HILLVIEW & PORTER 29 29 1/5/1998 CL PALO ALTO PAGEMILL ROAD N/A N/A 8/19/1998 CL GP PALO ALTO STANFORD/CAMPUS ROAD 40 40 12/3/1997 CL PALO ALTO TRANSPORT STREET 21 30 8/11/1998 X PALO ALTO VARIAN X 70 07/21/92 SM GP PALO ALTO X 35 35 1/12/1998 GP SM CL PALO ALTO X 5 15 7/27/1998 SW SM CL PASO ROBLES 1200 24TH STREET 21 42 2/18/1999 BED ROCK PATTERSON 400 C STREET 14 35 12/30/1999 CL PENNGROVE 4700 ACACIA WAY 38 40 12/31/1999 SM CL CONCRETE PESCADERO HWY 1 25 1/4/1999 GP SW PETALUMA 100 A LINCOLN ROAD 18 30 2/16/1999 SM PETALUMA 400 WASHINGTON BLVD. 12 15 1/25/1999 SM CL PETALUMA 500 WASHINGTON BLVD. 20 20 1/25/1999 GP SM CL PETALUMA 600 LIBERTY ROAD X 25 3/15/1999 SM PETALUMA 800 E. WASHINGTON 26 27 4/22/1999 CL PETALUMA BODEGA AVENUE 2 20 6/28/1999 HARD SAND PETALUMA LAKEVILLE ROAD 18 28 2/16/1999 GP SM CL PIEDMONT 708 LINDA STREET 14 12 2/9/1999 GP PINOLE 2700 PINOLE VALLEY ROAD 9 60 5/3/1999 CL,SM, SW PINOLE APPIAN & I80 10 18.5 12/30/1998 CL SM PINOLE PINOLE VALLE ROAD 35 30 04/07/99 CL PINOLE SAN PABLO AVENUE 25 15 12/31/1998 SAND STONE CL PITTSBURG 1300 LOVERIDGE ROAD 15 X 9/27/1993 CL SM PITTSBURG 1800 LOVERIGDE 28.5 40 4/27/1994 CL PITTSBURG 200 RAILROAD AVENUE 30 41 1/25/1999 SW CL PITTSBURG 2600 PITT./ANTIOCH HWY. 30 3/13/1996 SM PITTSBURG 2600 PITTSBURG/ANTIOCH HWY 30 10/20/1994 SC/SAND PITTSBURG 2800 WILLOW PASS ROAD 5 5 6/19/1999 X PITTSBURG 3500 RAILROAD AVENUE 70 85 7/11/1996 SM PITTSBURG 3500 WILLOW PASS ROAD 5 20 01/14/93 CL,SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 40 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

PITTSBURG 3RD & HARBOR 8 70 10/15/1993 SC PITTSBURG 3RD & HARBOR MANVILLE 16 21 7/19/1993 X Pittsburg 500 block W. Tentn St. 7 100 9/26/2007 PITTSBURG 500 GARCIA AVENUE 35 55 5/24/1999 SM SW PITTSBURG 600 NICHOLS ROAD 2 5 5/4/1999 CL PITTSBURG 600 W. 10TH STREET 8 15 5/4/1994 X PITTSBURG 95 BLISS 73 75 4/20/1995 CL PITTSBURG BEALIEU PLACE 50 11-Jan CL NO-WATER PITTSBURG DDSD-RWF 9 58 8/2/1996 CL PITTSBURG DIABLO SITE 7 50 8/9/1996 SAND/CL PITTSBURG DOW CHAMICAL 5 50 7/19/1996 SAND/CL PITTSBURG GREIF BROTHERS 6 150 11/25/1996 SAND/CL PITTSBURG HARBOR STREET 45 100 1/20/1997 CL PITTSBURG HWY. 4 IMPROVEMENT 64 30 10/21/1996 CL PITTSBURG KELLER CANYON LANDFILL 2 60 9/12/1996 CL PITTSBURG KELLER CANYON LANDFILL 17 60 9/13/1996 CL Pittsburg Loveridge Rd 50 120 10/19/2007 PITTSBURG LOVERIDGE ROAD X 60 1/5/1999 CL SM GP PITTSBURG LOVERIDGE ROAD X 50 6/7/1993 SM CL PITTSBURG LOVERIDGE ROAD 8 20 8/25/1993 CL SM PITTSBURG LOVERIDGE ROAD 8 62 6/28/1994 SILTY CL/GP PITTSBURG LOVERIDGE ROAD 10 70 10/12/1994 BAYMUD/SAND PITTSBURG LOVERIDGE ROAD 10 45 4/1/1996 SM Pittsburg Marina Blvd 8 78 2/6/2008 PITTSBURG NICHOLS ROAD 11 15 5/12/1999 CL PITTSBURG NICHOLS ROAD 6 60 5/24/1994 BAYMUD PITTSBURG NICHOLS ROAD 4 50 6/16/1994 CL SILTS PITTSBURG NICHOLS ROAD 7 50 2/9/1995 CL/SM PITTSBURG PG&E 3 10 3/12/1999 BAY MUD, PEAT PITTSBURG PG&E 5 15 3/17/1999 CL, SAND, PEAT PITTSBURG PG&E 10 20 01/04/93 CL PITTSBURG PG&E 6 25 2/17/1994 CL PITTSBURG PG&E 696 W 10TH 8 15 5/13/1994 PITTSBURG PGE HWY 20 6 15 11/10/1993 CL, SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 41 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

PITTSBURG PITTSBURG POWER PLANT 5 80 1/23/1997 CL PITTSBURG RAILROAD AVENUE 65 80 4/13/1994 X PITTSBURG RAILROAD AVENUE 55 1/31/1995 CL PITTSBURG TELFUR SHELDON TANK 5 63 8/8/1996 SAND/CL PITTSBURG USS POSCO X 30 5/29/1999 SM CL PITTSBURG USS POSCO X 20 3/8/1999 CL PITTSBURG USS POSCO 4 86 9/10/1996 CL/SAND PLACERVILLE MAIN STREET 5 7 2/24/1997 ROCK PLACERVILLE 1300 BROADWAY 16 25 1/23/1997 ROCK PLEASANT HILL 1600 CONTRA COSTA BLVD X 26.5 06/08/92 CL,GP,SW,SM PLEASANT HILL 1900 CONTRA COSTA BLVD. 18 23 7/23/1997 CL PLEASANT HILL 2300 CONTRA COSTA BLVD X 15.5 06/05/92 SM,CL PLEASANT HILL 3400 N. MAIN STREET 13 25 7/21/1997 CL PLEASANT HILL 3400 N. MAIN STREET 12 20 12/17/1997 CL PLEASANT HILL 500 CONTRA COSTA BLVD. 9 18 3/5/1997 GP SM SW CL PLEASANT HILL BUSKIRK 15 20 02/25/92 CL PLEASANT HILL CCCS, GOLF CLUB ROAD X 28 03/23/92 SAND PLEASANT HILL CITY OF PLEASANT HILL 7 48 06/25/92 PLEASANT HILL CONTRA COSTA & MONUMENT 11 16 01/23/92 CL PLEASANT HILL GULF CLUB ROAD X 28 05/11/92 SAND, STONE PLEASANT HILL HOOKSTON ROAD 9 20 5/12/1997 GP SW SM CL PLEASANT HILL MONUMENT BLVD 17 60 6/30/1997 CL SM PLEASANT HILL MONUMENT PLAZA 10 35 08/30/91 SAND/CL PLEASANT HILL P/K CLEANERS 8 30 01/13/92 CL PLEASANTON 1800 SANTA RITA ROAD 45 55 09/21/92 CL PLEASANTON 2500 VINEYARD AVENUE 60 75 11/13/91 GP/SM/CL PLEASANTON 2500 VINEYARD AVENUE 122 150 11/18/91 SM/CL/GP Pleasanton Busch Rd. 61.5 90 1/5/2007 Pleasanton El Charro Rd. & Stanly Blvd. 6.5 80 2/1/2007 PLEASANTON FOOTHILL BLVD. 15 15 09/11/92 CL PLEASANTON KAISER 55 75 11/25/91 SAND PLEASANTON OLD FOOTHILL BLVD. 19 55 09/21/92 CL PLEASANTON PLEASANTON GRAVEL X 20 10/20/92 SM PLEASANTON SUNOL BLVD - KAISER X 90 10/12/92 CL CP SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 42 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

POINT REYES OLEMA CAMPGROUND 5 45 8/25/1998 SAND/CL PORT COSTA SCENIC DRIVE 9 40 1/23/1998 CL/GP PORTERVILLE 200 NORTH MAIN STREET 60 85 4/13/98 SW GP PORTLAND-OR NW FACILITY 8 100 4/17/1998 SAND/CL PORTLAND-OR RHONE POULENC 22 111 12/3/1998 CL/SAND PT. REYES BEAR VALLEY ROAD 30 35 10/5/1998 GP CL SM RANCHO CORDOVA DOUGLAS ROAD 24 5/28/1998 GRAVEL RED BLUFF 900 N. MAIN STREET X 46 1/27/1999 SAND PACK RED BLUFF RED BLUFF ARMORY 0 20 7/13/1998 CL RED BLUFF USA MINI MART 13 20 5/19/1998 COBBLES,GP,SAND REDDING 1700 PINE STREET 26 32 1/13/1999 Redwood City 1100 block Veterans Blvd 13 100 9/19/2008 REDWOOD CITY 1311-1511 BROADWAY X 20 1/6/1999 GP SW SM CL Redwood City 1600 block Woodside Rd. 10 50 7/16/2008 REDWOOD CITY 2200 EL CAMINO REAL 8'-12' 18 7/15/1999 REDWOOD CITY 2400 EL CAMINO REAL 18 20 1/6/99 CL CP Redwood City 2900 block Bay Rd. 7 41 8/31/2007 Redwood City 500/600 Saginaw Dr. 10 120 7/3/2008 REDWOOD CITY 5TH & SEMI CIRCLE 3 25 6/4/1999 CL REDWOOD CITY 600 WHIPPLE AVE 6.5 20 6/17/1999 CL,GP REDWOOD CITY 600 WOODSIDE ROAD 6 8 10/05/92 CL REDWOOD CITY 700 BAIR ISLAND ROAD 8.5 11.5 5/26/1999 X REDWOOD CITY 800 BREWSTER AVENUE 8 25 3/15/1999 CP CL REDWOOD CITY EL CAMINO & WHIPPLE 15 20.5 1/13/1999 CL REDWOOD CITY EL CAMINO REAL 25 30 7/12/1999 GP SM SW CL REDWOOD CITY REDWOOD CITY WATER TANK 6 100 3/16/1999 SAND/CL REDWOOD CITY SEAPORT BLVD. 4 23 8/4/1999 GP SW SM CL REDWOOD CITY SELL STATION 1667 WOODSIDE 16 28 1/27/1999 X REDWOOD CITY TEXACO EL CAMINO REAL 8 25 4/22/1999 CL,SM REDWOOD CITY TWIN DOLFIN 3 15 1/19/1999 CL BAYMUD REDWOOD CITY TWIN DOLPHIN ROAD 11 25 1/19/1999 CL BAY MUD FILL REDWOOD CITY WHALER ISLAND 3 50 8/3/1999 CL REDWOOD CITY X 13 25 7/12/1999 GP SW CL REEDLEY 900 G STREET 12 30 1/27/1999 SM SW HARDPAN

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 43 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

REEDLEY SAFETY KLEEN FACILITY 45 80 3/1/1999 SAND RENO 100 W. PLUMB LANE X 30 8/4/1999 CL GP RENO X X 25 7/26/1999 ROCKS RHEEM TJ MAX PLAZA X 10 4/29/1993 CL, SM RHONERT PARK 500 MARTIN AVENUE 20 25 10/15/1993 GP CL SW RHONERT PARK SHELL SITE 16 66 2/9/1994 CL RICHMOND BARRETT AVENUE 31 4/9/1997 CL RICHMOND 100 CHEVRON WAY X 45 3/12/1997 X RICHMOND 100 WEST CUTTING 4 25 10/02/91 CL RICHMOND 1100 HARBOUR WAY 4 12 7/27/1998 CL/BAYMUD/SM RICHMOND 1100 MARINA 15 32 6/6/1994 RICHMOND 1300 CUTTING BLVD 9 20 10/15/92 CL RICHMOND 1500 DORNAN DRIVE 4'-9' 16 7/18/1996 COBBLES/GP RICHMOND 15000 SAN PABLO AVENUE 7 18 2/16/1995 GP CL SM RICHMOND 23RD & MCDONALD 12 20 02/17/92 X RICHMOND 2600 GOODRICH AVENUE 8 20 7/31/1997 GP CL RICHMOND 3000 GIANT ROAD 9 25 10/31/1994 SW RICHMOND 3200 JACUZZI STREET 10 21 10/8/1997 GROUT SEAL/SANDPACK RICHMOND 3600 MACDONALD 15 23 10/11/1994 RICHMOND 400 PARR BLVD. 9 35 4/5/1994 CL RICHMOND 400 WRIGHT AVENUE 25 05/18/92 BAYMUD/CL RICHMOND 400 WRIGHT AVENUE 3 25 6/13/1994 CL RICHMOND 4175-97 LAKESIDE 11.5 20 6/16/1994 SM CL RICHMOND 47TH STREET NURSERIES 10 80 12/13/1993 CL/SAND RICHMOND 4900 SAN PABLO AVENUE 10 12/5/1996 GP SW CL RICHMOND 4TH ST X 110 10/6/1994 SW,SM,GP RICHMOND 5200 CENTRAL AVENUE 5 14 07/08/92 SAND PACK RICHMOND 5200 CENTRAL AVENUE 4 16 9/15/1993 SAND RICHMOND 5400 CENTRAL AVENUE 9 13 8/25/1997 X RICHMOND 5400 CENTRAL AVENUE X 20 10/2/1997 CL NO-WATER RICHMOND 800 CHELSEY 15 25 4/29/1994 CL RICHMOND 800 HARBOR WAY X 25 01/26/93 DIRT,SAND RICHMOND 800 MORTON AVENUE X 25 6/24/1996 CL RICHMOND 800 MORTON AVENUE 10 63 4/11/1995 GROUT SEAL/SANDPACK

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 44 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

RICHMOND 800 WHARF STREET 4 30 9/20/1996 CLAY RICHMOND 800 WHARF STREET 10 12/2/1996 CL RICHMOND 800 WHARF STREET X 20 10/23/1997 CL SM RICHMOND 800 WRIGHT AVENUE X 10 09/17/92 X RICHMOND 900 MARINA 15 15 11/5/1996 SM CL RICHMOND 900 MARINA BAY PKWY 5 17 6/6/1994 CL RICHMOND 900 MARINA BAY PKWY 40 45 3/9/1999 CL,SAND RICHMOND BUILDING 87 8 30 11/25/1996 GROUT SEAL/SANDPACK/GP RICHMOND CAL TRANS 8 20 03/09/92 BAY MUD RICHMOND CAL TRANS 8 15 06/02/92 RUBBLE RICHMOND CASTRO & HENSLEY 10 35 11/3/1994 CP SW RICHMOND CHESLEY 15 7/26/1994 X RICHMOND CHEVRON REFINERY 8 35 6/8/1999 SM Richmond Cutting Blvd. 5 125 7/23/2007 RICHMOND DICON FIBEROPTIC SITE 6 80 01/04/93 SAND/CL RICHMOND FORMER STAUFFER 2 60 01/18/93 CL RICHMOND GARRITY WAY 43 45 8/24/1998 X RICHMOND GARTH WAY 40 60 8/24/1998 CL RICHMOND HENSLEY ROAD 3 8 8/27/1996 GP/BAYMUD RICHMOND HILLTOP & SAN PABLO X 22 6/14/1994 CL RICHMOND MARINA BAY PARKWAY 6 13 9/8/1994 SAND PK,BAY MUD RICHMOND MARINA BAY PARKWAY 14.5 19 6/17/1999 CL SM RICHMOND MARINA WAY SOUTH 5 16 07/17/92 SAND PACK RICHMOND MORTON & COLLINS 18 35 10/5/1994 CL RICHMOND P.T. MOLATE 49 06/01/92 GROUT SEAL/SANDPACK RICHMOND PITTSBURG & CENTRAL STREET 10 35 02/20/92 CL SM RICHMOND PORT OF RICHMOND 8 119 6/16/1997 CL/SAND RICHMOND RICHMOND PIER 7 X 6/16/1994 BAYMUD,SANDS RICHMOND RICHMOND PKWY 3'-8' 16.5 9/9/1996 CL RICHMOND SAN PABLO AVE 13 20 11/6/92 HARD FILL, BAYMUD RICHMOND SAN PABLO AVENUE X 80 10/5/1994 GP CL SM RICHMOND SAN PABLO AVENUE 7 15 10/01/91 SM CL RICHMOND SANTA FE RAIL ROAD 9 42 01/17/92 X RICHMOND UNKNOWN X 7 6/10/1993 CL, BEDROCK

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 45 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

RICHMOND X 5 4.5 11/21/1997 SM CL RIO DEL MAR RIO DEL MAR PUMP STATION 23 25 2/19/1994 RIO VISTA 600 ROUTE 12 10 20 7/16/1994 TRASH FILL RIO VISTA 900 BEACH STREET 20 30 11/06/91 FLOWING SAND RIO VISTA DROUIN COMP STATION/PG&E 75 80 04/28/92 SM,CL RIO VISTA DROUIN COMP STATION/PG&E 73.5 92 05/26/92 SM,CL RIO VISTA HWY 12 MASTER METER 63 70 7/15/1999 CL RIO VISTA HWY 12 MASTER METER/PG&E 63 70 03/25/92 CL RIO VISTA KERBY HILLS X 13 4/6/1999 CL,SM BAYMUD RIO VISTA LI82 PG+E 52 65 02/01/93 GP, GRAVEL RIO VISTA MARKS COMP/PG&E 30 85 02/12/92 SAND, CL RIO VISTA METER STATION/PG&E 72 88.5 06/26/92 SAND,CL RIO VISTA PG&E 3 20 2/16/1995 CL, SAND RIO VISTA PG&E NO WATER 55 12/10/1996 CL RIO VISTA PG&E 61 75 9/6/1997 CL RIO VISTA PG&E 95 95 01/20/92 CL RIO VISTA PG&E 8 12 02/10/92 RIO VISTA PG&E 20 35 03/09/92 SM RIO VISTA PG&E 12 16 03/09/92 SAND, CL RIO VISTA PG&E 35 45 3/16/1999 HEAVYSAND CLAY RIO VISTA PG&E 110 110 4/5/1999 HEAVYCLAY, SAND RIO VISTA PG&E NO WATE 30 4/5/1999 X RIO VISTA PG&E 75 95 7/22/1997 X RIO VISTA PG&E L 114 X 80 11/15/1996 CL,SM RIO VISTA PG&E SERPA 99 109 04/24/92 CL,SM RIO VISTA PG&E SERPA X 110 10/17/92 CL,SM RIO VISTA PG&E YARD RUL-182 66 99.5 6/31/99 CL,SM RIO VISTA PGE YARD RUL-182 X 85 12/28/1999 CL,SILTS RIO VISTA PGE YARD RUL-182 66 82 12/28/1998 SM,CL RIO VISTA SHERMAN ISLAND 34 39 9/15/1994 RIO VISTA SHERMAN ISLAND 3 20 2/6/1995 X RIPON 300 MAIN STREET 24 35 12/16/91 SM Ripon 1000 block Frontage Rd 28 103 2/23/2007 RIPON NESTLE FACILITY 19 120 4/17/1995 SAND/CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 46 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

RIPON SHELL STATION 22 70 2/2/1999 SAND RIPON X 22 40 6/30/1993 SAND ROCKLIN 2800 SUNSET BLVD X 10 9/16/1996 SW ROCKLIN 4800 GRANITE DRIVE 2 14 8/4/1994 SW ROCKLIN X 8 10 3/24/1995 SM GRAVEL RODEO 1100 SAN PABLO AVENUE 12 22 9/3/1998 SW/CL RODEO HAWTHORNE BRIDGE 16 20 10/7/1996 BAYMUD, ROCK RODEO SAN PABLO AVENUE 30 40 3/9/1998 SILTY CL/SAND RODEO X 8 10 4/1/1998 CL/GP/SM RODEO X 35 8/16/1998 SANDSTONE Rohnert Park 200 block College View Dr. 8 50 8/25/2007 Rohnert Park 5000 block Redwood Dr. 10 105 4/29/2008 ROHNERT PARK 6000 STATE FARM DRIVE 16 6/30/1998 Rohnert Park 6300 block Commerce Blvd. 12 80 4/18/2007 ROSEVILLE 100 RIVERSIDE AVENUE 20 5/25/1999 X ROSEVILLE 1700 DOUGLAS BLVD. 16 90 3/28/1995 CL/SM ROSEVILLE 20 WHYTE ROAD 17 20 8/7/1998 BEDROCK/CLAY ROSEVILLE 3900 DOUGLAS 10 20 4/18/1998 SAND,GROUT ROSEVILLE 3900 DOUGLAS 5 20 3/14/1995 ROSEVILLE 3900 DOUGLAS BLVD. 12 30 5/21/1999 SW/CL ROSEVILLE 900 RIVERSIDE AVENUE 15 95 8/6/1998 CL SW ROSEVILLE ARCO STATION 36 60 05/14/92 SAND/CL S. LAKE TAHOE 1000 EMERALD BAY RD 20 75 2/7/2001 S. LAKE TAHOE 1000 EMERALD BAY RD 10 30 12/20/2000 S. LAKE TAHOE 1000 EMERALD BAY RD 20 80 8/25/2000 S. LAKE TAHOE 1000 EMERALD BAY RD 27 42 5/25/2000 S. LAKE TAHOE 1000 EMERALD BAY RD 20 85 5/5/2000 S. LAKE TAHOE 1000 EMERALD BAY RD 20 80 8/11/2000 S. LAKE TAHOE 2500 LAKE TAHOE BLVD 23 25 5/26/1994 X S. LAKE TAHOE SHELL SITE 80 06/19/92 SAND/CL S. LAKE TAHOE SHELL SITE 28 80 09/14/92 SAND S. LAKE TAHOE SHELL SITE 33 68 9/14/1998 SAND S. LAKE TAHOE SHELL SITE 28 70 4/2/1993 SAND S. LAKE TAHOE SHELL SITE 20 50 5/29/1996 SAND

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 47 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

S. LAKE TAHOE USA GAS STATION 15 100 06/04/92 SW S. SAN FRANCISCO SO. LINDEN 7 5 4/13/2000 X S. SAN FRANCISCO 200 GATEWAY BLVD. 10 14 3/5/2001 GROUT, SAND S. SAN FRANCISCO 200 HASKINS WAY 8 20 1/6/2001 SAND S. SAN FRANCISCO 200 LINDEN AVENUE 8 12 11/2/1999 S. SAN FRANCISCO 200 UTAH AVENUE 4 10 2/24/1999 GROUT SEAL/SANDPACK S. SAN FRANCISCO 400 SO. AIRPORT BLVD. 10 13 2/28/2000 CL SM S. SAN FRANCISCO 500 23RD ST 12 20 10/2/2000 CL,BEDROCK S. SAN FRANCISCO 500 23rd St 0 9 1/6/2000 GARBAGE,CL S. SAN FRANCISCO 500 ECCLES 5 15 9/2/1997 GROUT SEAL/SANDPACK S. SAN FRANCISCO 700 EL CAMINO REAL 0 40 12/11/1999 CL,GP,SW,SM S. SAN FRANCISCO 900 BEACON STREET 6'-10' 22 9/11/2000 SM CL S. SAN FRANCISCO GRANT AVENUE 12 15 1/3/2001 BAY MUD CL S. SAN FRANCISCO HARBOR BUILDING 1 5 80 3/1/1999 CL/SAND S. SAN FRANCISCO HARBOR BUILDING 1 5 80 7/13/1999 CL S. SAN FRANCISCO ORANGE STREET 30 45.5 3/3/1999 SAND/GP S. SAN FRANCISCO OYSTER POINT 6 39 1/20/2000 FILL,GARBAGE,COB S. SAN FRANCISCO OYSTER POINT BLVD. X 15 6/5/2000 X S. SAN FRANCISCO OYSTER PT YACHT CLUB 6 30 5/10/2000 S. SAN FRANCISCO PG&E POTRERO AVENUE 12 25 4/4/2000 X S. SAN FRANCISCO SAN FRANCISCO AIRPORT 22 3/1/1999 BAYMUD S. SAN FRANCISCO SFO 18 2/22/1999 BAYMUD/GP S. SAN FRANCISCO SFO INTL AIRPORT 15 15 7/22/1999 GP SM CL S. SAN FRANCISCO SFO INTL AIRPORT 8 11 3/20/2000 SM,CL S. SAN FRANCISCO SFO INTL AIRPORT 10 60 2/13/2001 X S. SAN FRANCISCO SHELL X 40 6/7/2000 CL,GP, SAND S. SAN FRANCISCO UNITED AIRLINES 15 59 8/2/1999 CL/ROCK S. SAN FRANCISCO UNITED AIRLINES 20 35 10/31/2000 CL,ROCK S. SAN FRANCISCO UNITED AIRLINES 20 45 2/22/2000 CL, ROCK, SAND S. SAN FRANCISCO UNITED AIRLINES 20 48.5 4/6/2000 CL, ROCK S. SAN FRANCISCO UNITED AIRLINES X 60 2/28/2000 SM,CL, BAY MUD S. SAN FRANCISCO UNITED AIRLINES X 59 2/21/2000 CL, BAY MUD S. SAN FRANCISCO UNITED AIRLINES X 15 9/6/2000 ROCK, BAY MUD S. SAN FRANCISCO UNITED AIRLINES SFO 20 60 4/20/2000

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 48 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

S. SAN FRANCISCO UNITED AIRLINES SFO 25 55 1/12/2000 SANDS,BEDROCK S. SAN FRANCISCO UNITED SFO. 10 60 3/8/2001 X S. SAN FRANCISCO UNITED SFO. 10 22 5/1/2000 X S. SAN FRANCISCO UNITED SFO. 15 22 2/24/1999 X S. SAN FRANCISCO X 35 2/26/1999 BAYMUD SACRAMENTO 1000 BROADWAY 16 27 9/28/1994 GROUT,SAND PACK SACRAMENTO 1000 BROADWAY 16 27 5/2/1997 GROUND SAND PACK SACRAMENTO 1100 BROADWAY 45 45 11/9/1998 CL SACRAMENTO 1300 A STREET X 20 11/2/1998 X SACRAMENTO 1300 FLORIN X 16 11/5/1998 CL SACRAMENTO 1300 FLORIN RD 20 33 11/3/1998 SM,CL SACRAMENTO 1500 21ST STREET 48 50 10/30/1998 SM CL SACRAMENTO 1500 L STREET 16 20 11/3/92 CL/SM SACRAMENTO 1600 ARDEN WAY X 15 7/1/1993 SAND STONE,SAND SACRAMENTO 1600 ARDEN WAY 65 80 2/11/1997 X SACRAMENTO 1600 ARDEN WAY 64 80 4/29/1997 SM SACRAMENTO 1600 ARDEN WAY 65 80 6/26/1997 SACRAMENTO 1600 T ST 21 25 5/12/1997 SACRAMENTO 1700 30TH STREET 17 70 2/5/1999 CL SM SACRAMENTO 1800 BROADWAY 16 25 12/8/1997 CL/CM Sacramento 18th and S St. 13 77 3/23/2007 SACRAMENTO 2000 FRONT STREET NA 35 10/30/1998 CL,DIRT SACRAMENTO 2300 BROADWAY 25 30 5/5/1997 SACRAMENTO 2400 DEL PASO BLVD. NO WATER 60 6/1/1998 SM,CL SACRAMENTO 2400 NORTHGATE BLVD. 35 50 11/2/1998 SM SACRAMENTO 2600 5TH STREET X 24 12/29/1999 CL SACRAMENTO 2700 RIVERSIDE 65 145 7/13/1999 SW CL GP SACRAMENTO 3100 ARDEN WAY 0 50 4/24/1998 SM SACRAMENTO 3300 FRUITRIDGE ROAD 18 11/9/1998 SM CL SACRAMENTO 3700 FRANKLIN STREET X 30 2/5/1999 SW SM CL SACRAMENTO 3800 NORTHGATE AVENUE 40 07/20/92 CL/SM SACRAMENTO 400 I STREET 34 40 4/8/1994 X SACRAMENTO 400 POWER INN ROAD 90 150 3/4/1998 SAND SACRAMENTO 4000 FREEPORT BLVD. 18 30 9/14/1994 X

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 49 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SACRAMENTO 4300 MADISON AVENUE 123 125 12/15/1997 CL SACRAMENTO 4600 H. STREET 21.5 23 10/11/92 GP SW SACRAMENTO 4800 WEST CAPITAL AVENUE 24 10/28/1997 SACRAMENTO 4800 WEST CAPITOL AVENUE 8 34 9/10/1998 SM SACRAMENTO 52ND STREET 58 80 9/19/1997 SW SM CL SACRAMENTO 5500 MARTIN LUTHER KING NONE 45 01/25/93 SM,CL SACRAMENTO 5700 BROADWAY 12 20 11/6/1998 SM,CL SACRAMENTO 6100 SUNRISE VISTA 19 20 11/4/1998 SM,CL SACRAMENTO 6100 WATT AVENUE 60 11/07/91 SM/CL SACRAMENTO 6900 65TH STREET X 24 7/8/1999 GP SW SM SACRAMENTO 6900 EARHART DRIVE 17 20 11/6/1998 SW CL SACRAMENTO 6900 FRANKLIN BLVD. 18 25 10/27/1998 SM CL SACRAMENTO 700 29TH STREET 17 26.5 11/3/1997 SILTY SAND/CL SACRAMENTO 7000 3RD PWY X 16 01/28/93 CL SACRAMENTO 7500 FRANKLIN BLVD 25 30 1/22/1998 SW SM SACRAMENTO 8000 FLORIN ROAD 50 09/02/92 SM/CL SACRAMENTO 8000 FOLSOM BLVD. NONE 45 7/19/1993 SM,CL SACRAMENTO 8900 POCKET RD 12.5 28 8/20/1997 SACRAMENTO 8900 POCKET RD 13 30 9/26/1997 CL,SAND SACRAMENTO 8900 POCKET ROAD 12 20 7/14/1998 CL SACRAMENTO 9100 KIEFER BLVD. 70 75 12/12/1997 CL/SM SACRAMENTO AMERICAN RIVER WATER 20 50 4/4/1994 CL/SAND SACRAMENTO ARDEN WAY 64 80 2/8/1995 SM Sacramento Arena Blvd & I5 Freeway 18 50 7/2/2007 SACRAMENTO ARGEN & WATT 85 100 12/16/91 CL, SM SACRAMENTO AUTO SPORT GARAGE 11 80 2/19/1998 CL/SAND SACRAMENTO COUNTRY CLUB STREET 14 32 01/09/92 SW,CL SACRAMENTO FERG'S GENERAL STORE 42 200 4/20/1999 CL/SAND SACRAMENTO FOLSOM BLVD. 33 40 2/12/1997 X SACRAMENTO HAMMER LANE 24 45 7/28/1997 CL,SM SACRAMENTO MATHERS AFB 10 8/28/1997 GP,COBBLES SACRAMENTO MCCLELLAN AFB 118.5 118.5 12/29/1998 SM,CL SACRAMENTO MCCLELLAN AFB 118.5 118.5 5/18/1998 SM,CL SACRAMENTO MCCLELLAN AFB 117 140 9/24/1993 SM, CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 50 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SACRAMENTO MCCLELLAN AFB X 15 11/20/1996 X SACRAMENTO MCCLELLAN AFB 118.5 118.5 4/15/1997 SM, CL SACRAMENTO MCCLELLAN AFB X 15 7/1/1997 SACRAMENTO MCCLELLAN AFB 10 04/30/92 CL/SM SACRAMENTO PURITY OIL 27 37 6/30/1999 SM SW SACRAMENTO PURITY OIL 18 75 4/30/1998 CL SACRAMENTO SAC METRO AIRPORT X 16 1/16/1995 X SACRAMENTO SACRAMENTO X 60 2/25/1999 SM SACRAMENTO SACRAMENTO 30 60 10/3/1996 X SACRAMENTO SACRAMENTO AVENUE 4 18 12/27/1996 CA SACRAMENTO SHELL 9 18 1/11/1998 CL, SM SACRAMENTO SPIEKER 10 5 8/26/1996 CL SACRAMENTO TANK FARM 7 20 12 12/31/1998 CL/SAND SACRAMENTO UNION PACIFIC X 60 7/21/1997 CL SALINAS 1000 S. MAIN STREET 20 25 8/29/1998 SM CL SALINAS 1500 ABBOTT STREET 50 67 1/30/1998 CL SW SM SALINAS 1500 ABBOTT STREET 39 40 8/11/1998 CL SM SALINAS 200 MONTEREY ST 15 32 4/1/1993 SALINAS 200 NORTH MAIN STREET 48 58 7/28/1993 CL Salinas 300 block Cayuga St. 21.5 100 1/6/2008 SALINAS 300 ESPINOSA ROAD 40 01/21/93 CL SW GP SALINAS 600 SAND BORN 58.5 65 02/11/93 CL, SAND SALINAS 81 HITCHCOCK ROAD 12 4/5/1993 SALINAS GRANITE CONSTRUCTION 60 100 10/7/1993 CL/SAND SALINAS LINCOLN AVE/WEST MARKET 17 30 11/7/1998 CL Salinas Main St. 1300 Block 43 100 2/2/2007 SALINAS TERVEN AVENUE 8 10 3/7/1998 SM CL SW SAN ANSELMO 700 SIR FRANCIS DRAKE BLVD 14 25 3/7/1994 SM CL SAN ANSELMO 900 SIR FRANCIS DRAKE BLVD X 25 12/8/1993 SM GP SAN BRUNO 1100 EL CAMINO REAL 20 30 4/18/1995 CL, GP SAN BRUNO 1100 EL CAMINO REAL 40 5/28/1996 SAN BRUNO 200 ROLLINGWOOD DRIVE 115 125 1/19/1995 CS,SM San Bruno 800 block El Camino Real 10 75 4/12/2008 SAN BRUNO SAN BRUNO AVENUE 6 16 7/12/1994 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 51 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN BRUNO TANFORAN SHOPPING CENTER 20 30 2/23/1995 CL, GP SAN CARLOS 1000 EL CAMINO REAL 6 22 10/13/1997 SM/CL San Carlos 700 Block Industrial 6 65 7/18/2007 San Carlos 900 block Bransten Rd. 5 64 10/2/2008 SAN CARLOS 900 CENTER 8 20 8/11/1997 CL/SM SAN CARLOS 900 HOLLY STREET 4 18 7/26/1996 CL GP SM DEBRIS SAN CARLOS DELTA STAR 4 25 11/15/1997 SAND/CL SAN CARLOS X 5 25 8/20/1997 SM SAN FRANCISCO 5500 SHELBY X 7 7/14/1999 GRAVEL FILL SAN FRANCISCO 700 EL CAMINO REAL 38 40 10/21/1997 X SAN FRANCISCO ARKANSAS STREET 12 15 11/20/00 FILL SM/CL SAN FRANCISCO #1 SANSOME STREET 12 20 1/6/1998 SW SM SAN FRANCISCO #3 MASONIC 6 18 2/20/1996 BED ROCK SAN FRANCISCO 100 9TH STREET 15 20 7/14/2000 SAND/CL San Francisco 100 block Van Ness Ave 7 50 6/26/2008 SAN FRANCISCO 100 ERIE STREET SITE 7 29 12/4/1999 SAND/CL SAN FRANCISCO 100 LENDEN AVENUE 18 25 3/5/1993 X SAN FRANCISCO 100 LINDEN ST 3 17.5 7/2/1998 SAN FRANCISCO 100 N. ACCESS ROAD 10 20 1/18/1999 CL,SM SAN FRANCISCO 100 N. ACCESS ROAD 8 25 10/19/1998 SM SAN FRANCISCO 100 POST STREET SITE 8 25 1/5/2000 SAND SAN FRANCISCO 100 SOUTH LINDEN AVENUE 20 10/7/2000 CL/SM SAN FRANCISCO 100 SPRUCE ST. LOT X 16 5/28/1999 CL, SM SAN FRANCISCO 100 VALENCIA 7 12 12/28/1993 SW SM SAN FRANCISCO 100 VAN NESS NO 26 05/18/92 SAND SAN FRANCISCO 1000 FOLSOM STREET 6.5 20 10/03/91 CL SAN FRANCISCO 1000 OAK STREET 4 35 4/30/1993 SM SAN FRANCISCO 110 LENDEN AVE 18 25 3/24/1997 SAN FRANCISCO 1200 HARRISON STREET 8 15 10/28/91 X SAN FRANCISCO 1200 THOMAS AVENUE 6 35 10/29/1997 BED ROCK SAN FRANCISCO 1300 22ND STREET 19 21 3/2/1998 SM SAN FRANCISCO 1300 22ND STREET 6 22 11/25/1998 CL SAN FRANCISCO 1400 DONNER AVENUE 15 25 4/21/1998 CL SAN FRANCISCO 1400 FAIRFAX 8 16 4/17/1993 SW

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 52 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN FRANCISCO 1500 VALENCIA 18 4/30/1994 SM CL San Francisco 1600 block Owens St. 9 95 5/10/2008 SAN FRANCISCO 1600 HOWARD STREET 6 21 4/12/1999 SAND SAN FRANCISCO 1600 INDIANA STREET 8 20 3/30/2000 SM/GP/CL SAN FRANCISCO 1600 LOMBARD STREET 15 30 9/17/1996 FLOWING SAND SAN FRANCISCO 16TH ST 7 16 8/28/1998 COBBLES, BAYMUD SAN FRANCISCO 1700 FOLSOM STREET 5 8 4/23/1999 FLOWING SAND SAN FRANCISCO 1700 LINCOLN BLVD. 25 3/30/2000 GP/SW/CL SAN FRANCISCO 1700 POWELL STREET 8 22 11/15/2000 SAND/CL San Francisco 1800 block Van Ness 65 70 9/12/2007 SAN FRANCISCO 1800 MISSION STREET 5 11 6/2/2000 SAND SAN FRANCISCO 18TH STREET & SHOTWELL 5 42 6/7/2000 CL/SAND San Francisco 1900 block Steiner 25 53 5/9/2008 SAN FRANCISCO 20 FRANKLIN STREET X 8 6/11/1999 SM SAN FRANCISCO 200 6TH STREET X 40 09/28/92 SM CL SAN FRANCISCO 200 FOLSOM 5 40 1/31/2000 SAN FRANCISCO 200 FREMONT STREET 5 50 8/23/2000 SAND SAN FRANCISCO 200 HALLECK ST 5 15 11/19/92 BRICK,CONCRETE SAN FRANCISCO 200 HASKINS WAY 20 30 2/15/1999 SAND SAN FRANCISCO 200 HYDE STREET X 20 6/10/1999 CL SW SAN FRANCISCO 200 MISSION STREET 18 24 11/5/1997 CL SAN FRANCISCO 200 SKY LINE BLVD. 43 50 4/23/1999 SAND SAN FRANCISCO 200 SKYLINE BLVD. 20 35 11/3/2000 SAND SAN FRANCISCO 200 THE EMBARCODERO 11 13 5/4/2000 FILL SM/CL SAN FRANCISCO 2000 BRANNAN STREET 10 30 5/24/1999 BAYMUD SAN FRANCISCO 2000 FOLSOM STREET 8 22 9/20/1994 SANDPACK/GROUT SAN FRANCISCO 2100 FELL STREET 22 45 3/1/1999 SAND,SILTS SAN FRANCISCO 2100 FELL STREET X 48 04/16/99 SAND PACK SAN FRANCISCO 2100 MARKET STREET X 20 10/1/1998 GP SW SAN FRANCISCO 2200 BUSH STREET X 45 11/1/1998 X SAN FRANCISCO 2200 BUSH STREET X 25 9/17/1996 SW SM SAN FRANCISCO 2200 JERROLD AVENUE 8 15 09/14/92 SW SM SAN FRANCISCO 2200 JERROLD AVENUE 13 47 11/17/92 X SAN FRANCISCO 2300 19TH AVENUE X 29 6/1/1999 SW

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 53 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN FRANCISCO 2300 CEASAR CHAVEZ 10 15 4/16/1999 GP,BAY MUD SAN FRANCISCO 2400 BAYSHORE 20 25 12/31/91 SAND SAN FRANCISCO 2400 HARRISON STREET 10 9 9/15/2000 CL SAN FRANCISCO 2400 MYRTLE AVE 20 30 9/12/1996 GROUT,SAND SAN FRANCISCO 24TH STREET 9 15 9/18/1996 SM SAN FRANCISCO 2500 16TH STREET 55 70 3/22/1999 SM,BEDROCK SAN FRANCISCO 2600 FOLSOM STREET 13 20 5/2/2000 CL/SM SAN FRANCISCO 2600 LOMBARD STREET 12 22 Jun-93 SM CL SAN FRANCISCO 2600 SAN JOSE AVENUE 6.5 17 08/29/92 SM CL SAN FRANCISCO 2700 16TH STREET 4 39 7/31/2000 CL/SAND SAN FRANCISCO 2700 16TH STREET 4 49 8/28/2000 CL/SAND SAN FRANCISCO 2ND ST. GIANTS STADIUM 13 20 9/30/1996 CL GP SW SM SAN FRANCISCO 300 5TH STREET X 19 6/7/1999 X SAN FRANCISCO 300 5TH STREET 13 20 8/31/2000 SW San Francisco 300 block Pine St. 13.5 53 9/20/2008 SAN FRANCISCO 300 ILLINOIS ST 7 15 07/16/92 CL,SAND SAN FRANCISCO 300 RHODE ISLAND X 20 1/18/1999 CL, SM, BEDROCK SAN FRANCISCO 300 RHODE ISLAND ST 12 19 11/4/1998 CL,WEATHERED ROCK SAN FRANCISCO 300 SONOMA STREET 8 25 5/1/1999 CL SAN FRANCISCO 300 TOWNSEND STREET 2 59 7/13/2000 SAND/CL SAN FRANCISCO 3000 3RD STREET 10 98 7/5/2000 CL SAN FRANCISCO 3400 3RD ST 5.5 76 2/16/1999 SAN FRANCISCO 3400 3RD STREET 6 15 4/10/2000 CL/BAYMUD SAN FRANCISCO 3800 3RD STREET 3 29 3/3/1999 SM CL SAN FRANCISCO 3900 CALLAN BLVD 25 45 1/10/1996 X SAN FRANCISCO 3RD STREET MUNI LIGHT RAIL 6 23 9/5/2000 SAND SAN FRANCISCO 400 30TH 5 14 11/11/1997 SW SAN FRANCISCO 400 E. GRAND AVENUE 8 18 9/30/1996 CL SAN FRANCISCO 400 KEARNY 20 45 9/20/2000 CL/SM/SAND SAN FRANCISCO 400 SOUTH VAN NESS 9 15 5/14/1993 CL/SAND/SILTS SAN FRANCISCO 4200 CALIFORNIA STREET 28 57 8/29/1997 GROUT SEAL/SANDPACK SAN FRANCISCO 4200 MISION ST 45 65 4/26/1994 SAN FRANCISCO 4200 MISSION ST 32 65 4/7/1998 SAN FRANCISCO 4TH & HOWARD 25 25 5/15/1993 X

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 54 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN FRANCISCO 4TH & HOWARD 20 25 8/24/1996 CONCRETE,BRICK,SAN SAN FRANCISCO 5TH & BRANNAN 8 10 1/25/1995 SM SAN FRANCISCO 5TH & TOWNSEND X 23 6/22/1994 SW SM SAN FRANCISCO 600 8TH STREET 8 20 2/15/1999 SAN FRANCISCO 600 HOWARD STREET 10 23 10/6/2000 SAND/CL SAN FRANCISCO 600 MISSISSIPPI STREET 10.5 16 9/11/1998 SAND SAN FRANCISCO 600 UNION STREET 3 13 1/6/2000 CL/SAND SAN FRANCISCO 700 BRANNAN STREET 8 16 10/1/1999 SAND SAN FRANCISCO 700 EL CAMINO REAL 36 40 9/25/1996 SAN FRANCISCO 700 PORTOLA AVENUE 12 16 3/24/1999 BEDROCK SAN FRANCISCO 7TH AVENUE X 15 3/29/1999 SM, CL, GP SAN FRANCISCO 7TH ST. JANITOR SUPPLIES X 12.5 2/11/1999 GP, GRAVEL SAN FRANCISCO 800 HOWARD STREET 15 5/18/1994 SAN FRANCISCO 800 MARKET STREET 7 15 1/4/2000 SAND/CL SAN FRANCISCO 800 MARKET STREET 22 37 4/18/2000 SAND/CL SAN FRANCISCO 8TH & HARRISON 13 50 8/22/1994 X San Francisco 8TH & Harrison 15 50 3/4/2007 SAN FRANCISCO 8TH STREET 16 18 12/20/1993 SAND PACK SAN FRANCISCO 900 HOWARD STREET 12 13 3/1/1996 XM SAN FRANCISCO ARKANSAS STREET 8 42 9/2/2000 CL/SAND SAN FRANCISCO ARMY STREET 5 62 11/27/2000 CL/SAND SAN FRANCISCO BART/SFO EXT. 15 80 1/27/2000 SAN FRANCISCO BAY AREA DRUM PROJECT 12 105 7/14/2000 SAND/CL SAN FRANCISCO BERRY & 2ND STREET 8 8/5/1997 SM SAN FRANCISCO BERRY & 4TH 12 12 16-Jun GP/CL SAN FRANCISCO BLDG. 136 SFO 15 20 9/22/1997 GP, CL, COBBLES SAN FRANCISCO BLUXOME STREET SITE 10 53 8/8/2000 SAND/CL SAN FRANCISCO BRITANNIA COVE 7 78 2/23/2001 SAND/CL SAN FRANCISCO CAL TRANS 15 40 1/18/199 SM SAN FRANCISCO CAL TRANS 22 24 3/22/1999 X SAN FRANCISCO CALIFORNIA & STEINER 4 15 02/09/93 SAND SAN FRANCISCO CHESTNUT & TAYLOR 35 45 10/18/1993 FL SAND SAN FRANCISCO COLUMBIA PKWY. 5 89 5/15/2000 SAND/CL SAN FRANCISCO CRISSY FIELD PRESIDIO 5 50 05/04/92 SAND

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 55 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN FRANCISCO CRISSY FIELD PRESIDIO 7 45 12/14/1998 SAND SAN FRANCISCO CRISSY FIELD PRESIDIO 7 50 5/21/1998 SAND SAN FRANCISCO DOLLAR RENTAL 10 20 6/16/1997 ASPHALT SAN FRANCISCO ELLIS 44 50 7/1/1999 SM SAN FRANCISCO EMBARCADERO 10 60 11/30/2000 SAND SAN FRANCISCO FEDERAL BUILDING 20 73 9/19/2000 SAND/CL San Francisco First St. & Mission 16 182 1/2/2007 SAN FRANCISCO FOLSOM & 4TH 6 50 2/10/2000 SAND SAN FRANCISCO FOLSOM STREET X 30 5/31/1999 SM SW CL SAN FRANCISCO GEARY & POLK 10 22 3/18/1999 SAND SAN FRANCISCO GEARY BLVD 7.5 30 4/2/1999 SM SAN FRANCISCO HABITAT FOR HUMANITY 22 65 8/21/2000 SAND/CL SAN FRANCISCO HUNTERS POINT 15 30 11/22/91 SAN FRANCISCO HUNTERS POINT 15 25 4/17/1998 BEDROCK FILL SAN FRANCISCO HUNTERS POINT 5 30 3/27/1998 BEDROCK FILL SAN FRANCISCO HUNTERS POINT 9 30 4/27/1998 BEDROCK SAN FRANCISCO HUNTERS POINT X 35 4/1/1999 BEDROCK FILL SAN FRANCISCO HUNTERS POINT X 20 4/22/1998 FILL SAN FRANCISCO HUNTERS POINT 9 22 6/25/1997 CL SAN FRANCISCO HUNTERS POINT 5 36 10/27/1997 X SAN FRANCISCO HUNTERS POINT 8 30 10/28/1997 CL SAN FRANCISCO HUNTERS POINT 8 33 2/10/1999 GROUT, SAND SAN FRANCISCO HUNTERS POINT FILL 30 11/19/1996 X SAN FRANCISCO HUNTERS POINT 10 20 3/5/1993 X SAN FRANCISCO HUNTERS POINT 8 9.5 3/13/1995 GP,COBBLES SAN FRANCISCO HUNTERS POINT 7 15 8/2/1996 SAN FRANCISCO HUNTERS POINT 8 19 8/1/1997 SAN FRANCISCO HUNTERS POINT 7.5 20 11/3/1997 SAN FRANCISCO HUNTERS POINT 10 20 06/03/92 FILL,WEATHERED ROC SAN FRANCISCO HUNTER'S POINT X 30 11/19/1998 BAY MUD,GARB. SAN FRANCISCO HUNTER'S POINT 7 22.5 3/17/1999 SL,SW SAN FRANCISCO ILLINOIS ST 9 20 5/4/1994 GARBAGE,BAYMUD SAN FRANCISCO ILLINOIS ST 8 20 8/19/1998 SAN FRANCISCO ILLINOIS STREET 8'-9.5' 14 8/29/1997 FILL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 56 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN FRANCISCO ILLINOIS STREET 5 20 8/18/1997 CL SAN FRANCISCO JEWISH HOME FOR THE AGED 31 53 10/15/1999 SAND/CL SAN FRANCISCO LAGUNDA HONDA HOSPITAL 30 39 5/12/2000 SAND/CL SAN FRANCISCO LAIDLAW BUS DEPOT 10 30 4/28/1997 GROUT SEAL/BAYMUD San Francisco Lake Merced Blvd. & Brotherhood Way 18.5 50 1/4/2008 SAN FRANCISCO MARINA BLVD 4 12 11/4/1997 SM SAN FRANCISCO MISSION BAY 15 8/9/1999 SAN FRANCISCO MISSION BLVD 10 16 02/18/92 CL SM SAN FRANCISCO MISSION STREET 45 65 3/24/1998 BUCKFILL,SANDPACK SAN FRANCISCO MISSION STREET 32 65 3/18/1993 X SAN FRANCISCO MUNI METRO 6 31 6/5/2000 SAND/CL SAN FRANCISCO MUNI METRO EAST 15 35 5/14/2000 SAND/CL SAN FRANCISCO MUNI METRO EAST 7 36 9/1/2000 SAND/CL San Francisco Owen & 16th 4.2 50 11/28/2007 San Francisco Owens & 16th 7.4 30 2/8/2007 SAN FRANCISCO OYSTER POINT LANDFILL 22 45 6/30/2000 CL SAN FRANCISCO PARKING LOT HOWARD STREET 20 25 7/20/1998 CONCRETE, BRICK SAN FRANCISCO PG&E X 1 6/24/1997 CL,SM SAN FRANCISCO PG&E X 12 09/04/92 GP.CL SAN FRANCISCO PG&E POTRERO X 38 2/10/1999 SM,CL SAN FRANCISCO PG&E/ POTRERO X 40 3/23/1998 CL SAN FRANCISCO PIER 64 2 51 3/30/2000 SAND/CL SAN FRANCISCO PINE & OCTAVIA STREET 15 54 12/8/2000 CL/SAND SAN FRANCISCO PINE & OCTAVIA STREET 15 37 6/30/2000 CL/SAND SAN FRANCISCO POTRERO 0 20 4/28/1994 FILL SAN FRANCISCO POTRERO AVE 12 25 4/20/1998 SAN FRANCISCO POTRERO ST X 35 12/1/1998 SAN FRANCISCO PRESIDIO 8 20.5 10/31/1998 SM SW SAN FRANCISCO PRESIDIO 7 43 1/16/1998 BEDROCK SAN FRANCISCO PRESIDIO 6 40 6/4/1999 SM CL SAN FRANCISCO PRESIDIO X 10 4/7/1999 FILL GP SW SAN FRANCISCO PRESIDIO 23 23.5 9/13/1996 CL SM GP SW SAN FRANCISCO PRESIDIO 5 25 9/9/1997 CL SM SW SAN FRANCISCO PRESIDIO 11 20 4/11/1997 SM CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 57 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN FRANCISCO PRESIDIO 2 20 5/4/1999 SW CP SM CL SAN FRANCISCO PRESIDIO X 20 3/23/1999 SM, CL SAN FRANCISCO PRESIDIO 15 30 3/15/1999 SAND SAN FRANCISCO PRESIDIO X 15 3/15/1999 X SAN FRANCISCO PRESIDIO 4 18 01/05/93 CL SM SAN FRANCISCO PRESIDIO 20'-30' 65 4/15/1999 SAN FRANCISCO RICHARDSON AVENUE 13 30 4/27/2000 SM SAN FRANCISCO SAN FRANCISCO 12 20 01/15/92 CL, BED ROCK SAN FRANCISCO SAN FRANCISCO AIRPORT 4 7 10/21/91 CL SAN FRANCISCO SAN FRANCISCO AIRPORT 8 20 3/6/1999 SM CL SAN FRANCISCO SAN FRANCISCO AIRPORT 4 20 5/14/1999 SM CL SAN FRANCISCO SAN FRANCISCO AIRPORT 8.5 21 10/23/92 CL SAN FRANCISCO SAN FRANCISCO AIRPORT 31 35 3/4/1999 BAY MUD GP SAN FRANCISCO SAN FRANCISCO AIRPORT 10.5 12 4/15/1999 SM/BAYMUD SAN FRANCISCO SFO 8 8.5 3/3/1998 CL, SAND SAN FRANCISCO SFO AIRPORT 6 60 12/22/2000 CL/SAND SAN FRANCISCO SFO AIRPORT 5 20 8/2/1999 CL SAN FRANCISCO SFO/UNITED 43 50 09/10/92 CL SM SAN FRANCISCO SUNNYDALE 58 60 3/28/2000 CL/SM/GP SAN FRANCISCO THE EMBARCADERO 10 20 5/24/1999 BAYMUD SAN FRANCISCO TREASURE ISLAND 30 9/9/1996 SAN FRANCISCO TREASURE ISLAND 7 24 04/08/92 SAN FRANCISCO TREASURE ISLAND 12 6/1/1994 SAN FRANCISCO TREASURE ISLAND 24 11/9/2000 SM/GP/SW SAN FRANCISCO TREASURE ISLAND 4 12 6/1/2000 SM SAN FRANCISCO UCSF MISSION BAY 5 90 2/7/2000 SAND/CL SAN FRANCISCO UNITED AIRLINES/SFO 7 18 2/7/1997 GP BAYMUD SAN FRANCISCO VAN DYKE 8 15 6/13/1996 G CL San Francisco Van Ness Ave & Hayes St. 12 50 7/3/2008 SAN FRANCISCO X 8 15 11/10/1997 GROUT, SAND SAN FRANCISCO X 8 35 5/31/1994 SW SAN FRANCISCO X 7 28 1/30/1995 GP SW SAN FRANCISCO X 10 15 2/6/1995 X SAN FRANCISCO X 10 30 1/27/2000 CL/SM/BAYMUD

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 58 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN FRANCISCO YERBA BUENA X 30 10/31/1997 SM San Joaquin Woodbridge Rd & I5 15-23 50 3/8/2007 SAN JOSE 2100 MONTEREY ROAD 25 40 10/3/2000 X SAN JOSE 5200 MONTEREY ROAD 30 40 6/14/2000 X SAN JOSE 100 7TH STREET 7 20 7/17/2000 CL/SM San Jose 100 block San Carlos St. 23 100 7/1/2008 SAN JOSE 100 BLOSSOM HILL RD 22 105 9/7/1999 SAN JOSE 100 MARTHA STREET 17 20 5/8/2000 SM SAN JOSE 100 WEST JULIAN ST REET 7 10 1/19/1999 CL SAN JOSE 100 WEST JULIAN STREET 9 12 6/27/2000 CL SM SAN JOSE 1000 BLOSSOM HILL ROAD 21 127 8/23/2000 CL/SAND SAN JOSE 1099 BLOSSOM HILL ROAD 21 75 7/17/2000 CL/SAND SAN JOSE 10TH ST. PRINT SHOP 10 37 10/18/2000 SAND PULK,CL SAN JOSE 1100 CLOEMAN AVENUE 6 21 4/28/2000 CL/GP SAN JOSE 1100 COLEMAN 17 55 3/25/1999 X SAN JOSE 1100 COLEMAN AVENUE 14 17 5/19/2000 CL/SM SAN JOSE 1100 COLEMAN AVENUE 6 15 7/12/1999 SM/CL SAN JOSE 1100 KURTHER AVE 39 88 6/22/2000 SAN JOSE 1100 N 7TH ST 19 30 10/23/2000 SAN JOSE 1100 N 7TH ST 12 330 6/14/2000 SAN JOSE 1100 TULLY ROAD 15 25 1/9/2001 SILTY CL SAN JOSE 1200 BROKAW STREET X 15 4/24/2000 GP, CL SAN JOSE 1200 S BASCOM AVE 0 15 1/10/2001 CL,GP SAN JOSE 1400 INDUSTRIAL AVENUE 15 38 10/16/2000 SM SAN JOSE 1400 INDUSTRIAL AVENUE 10 100 10/31/2000 CL/SAND/GP SAN JOSE 1400 TERMINAL AVENUE 7.5 19 10/9/2000 SW CL SAN JOSE 14000 UNION 8.5 20 10/23/2000 GP SAN JOSE 1500 ALUMROCK AVENUE 23 40 10/19/2000 CL San Jose 1500 block Stogham Lane 25 50 9/7/2007 SAN JOSE 1500 SOUTH 10TH STREET X 45 9/18/2000 DIESEL SAN JOSE 1500 SOUTH 10TH STREET 15 35 7/5/2000 SAND PACK SAN JOSE 1600 MEIDIAN AVENUE 78 90 7/12/2000 COBBLES/GP SAN JOSE 1600 MERIDIAN AVENUE 30 10/5/2000 CL/SM San Jose 1700 block Technology Dr. 8 100 9/10/2007

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 59 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN JOSE 1700 JUNCTION ROAD 12 15 6/5/2000 CL SAN JOSE 1700 JUNCTION STREET 9 20 6/1/2000 CL SAN JOSE 1700 MERIDIAN AVENUE 8 10 7/12/2000 SM CL GRAVEL San Jose 1800 block Monrovia Dr. 12 50 2/22/2008 SAN JOSE 1800 FORTUNE 25 35 4/26/2000 CL SM SAN JOSE 1900 MONTEREY RD X 15 8/22/2000 SAN JOSE 1ST ST. AND MONTAGUE X 10 10/12/2000 SM SAN JOSE 20 MAPLE STREET 26.5 30 8/29/2000 GP San Jose 200 block and N. First St. 10 100 5/3/2007 SAN JOSE 200 E SANTA CLARA 11 41 12/15/2000 SAN JOSE 200 GOLD STREET 8 9.5 4/17/2000 GP, GARBAGE SAN JOSE 200 MAIN STREET 30 30 3/6/2000 CL SM SAN JOSE 200 VALLEY DRIVE 30 6/14/2000 SM CL SAN JOSE 2000 ALUM ROCK AVENUE 18 35 11/29/2000 CL SAN JOSE 2000 OLD OAKLAND ROAD 15 25 12/28/1999 SM CL BASE RCK SAN JOSE 2100 MONTEREY 20 37 10/15/1999 SW SM SAN JOSE 2100 MONTEREY RD 25 40 11/15/2000 SAN JOSE 2200 PARAGON DRIVE 21 36 10/4/2000 CL SW SAN JOSE 2300 SOUTH 7TH STREET 20 30 11/15/1999 CL/GP/SAND SAN JOSE 2300 SOUTH 7TH STREET 20 73 12/5/2000 SAND/CL SAN JOSE 2700 STONY ROAD 10 21 6/14/2000 X SAN JOSE 2700 STORY RD 8 20 10/22/1999 SAN JOSE 2700 STORY RD 10 21 2/9/2000 SAN JOSE 2800 SENTER RD 38 30 3/7/2000 SAN JOSE 2800 SENTER ROAD 41 60 1/6/1999 SM, CL SAN JOSE 2800 STEVENS CREEK 56 60 2/4/2000 CL,GP San Jose 2900 block Rossmore Way 21 50 4/21/2008 San Jose 300 block Fowler Rd 32 50 12/20/2007 SAN JOSE 300 BROKAW ROAD 9 20 10/29/1999 SM, CL SAN JOSE 300 N. 1ST STREET 12 29 8/29/2000 CL SAN JOSE 300 N. MONTGOMERY 18 25 1/31/2000 SAN JOSE 300 N. MONTGOMERY STREET 15 30 5/24/2000 SM CL SAN JOSE 300 OAKLAND ROAD 15 100 2/17/2000 CL, SM SAN JOSE 300 WEST JULIAN STREET 34 7/17/2000

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 60 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN JOSE 3900 SHELL AVE 18 35 1/17/2000 CL,SW,SM SAN JOSE 3900 SHELL AVENUE 29 8/11/2000 SAN JOSE 3900 SHELL AVENUE 44 7/8/1999 SAND/CL SAN JOSE 3900 SNELL AVENUE 18.5 30 7/6/1999 FILL CL SAN JOSE 400 ALMADEN BLVD. 40 12/22/2000 CL SAN JOSE 400 E. BROKAW X 40 11/20/2000 CL SAN JOSE 400 KIELY BLVD. 33 40 4/3/2000 SILTY CL/GP SAN JOSE 400 KIELY BLVD. 33 38.5 4/3/2000 CL/SILTY SAND SAN JOSE 400 MERIDIAN 16 16 1/20/2000 SM CL GP SAN JOSE 4400 FORTRAN DRIVE 10 50 12/11/2000 CL/SAND SAN JOSE 4TH & SAN FERNANDO 14 26 4/20/2000 CL SM SAN JOSE 500 LENZEN AVENUE 10 50 4/20/2000 CL/SM SAN JOSE 5200 MONTEREY RD 30 40 6/20/2000 SAN JOSE 5400 CAMDEN AVE 32 50 5/11/2000 SAN JOSE 575 LENZEN 15 70 12/13/2000 CL/SAND SAN JOSE 5900 VALLEY ROAD X 20 10/27/1999 CL,GP,ROCK SAN JOSE 600 E. TRIMBLE X 35 2/2/2000 X SAN JOSE 600 N. 4TH STREET 15 15 4/20/2000 CLAY GP SAN JOSE 6000 MONTEREY ROAD X 14.5 2/23/1999 CL, PEA GRAVEL SAN JOSE 6000 SHELL AVENUE 12 22 2/15/1999 CL/GP SAN JOSE 6000 SHELL STREET 26 6/27/2000 San Jose 700 block of Forestdale Ave. 12 25 7/9/2007 SAN JOSE 700 N. 6TH STREET X 20 6/12/2000 CL SAN JOSE 700 WEST CAPITOL EXPWY 25 30 11/30/1999 SM CL SAN JOSE 800 BONITA AVENUE 10 38 3/2/1999 CL/SAND SAN JOSE 800 WEST CAPITAL 18 30 1/3/2000 X SAN JOSE 900 CHESTNUT AVENUE 20 36 8/16/2000 CL SW SM SAN JOSE 900 KIZER RD 12 32 8/14/2000 SAN JOSE 900 N. BASCOM AVENUE 28 5/16/2000 CL SAN JOSE 900 STOCKTON STREET 316 35 4/26/2000 CL SM SAN JOSE 9TH & TAYLOR 15 35 11/29/1999 CL San Jose Airport Blvd. 12 92 10/12/2007 SAN JOSE ALMADEN PLAZA SITE 16 100 3/9/2000 SAND/CL SAN JOSE ALUM ROCK ROAD X 20 4/19/2000 CL SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 61 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN JOSE ALUM ROCK ROAD 30 30 11/15/2000 CL GP SAN JOSE ARCO 2144 12 58 2/23/2000 CL/SAND SAN JOSE ARCO 2155 32 53 6/7/1999 SAND SAN JOSE BAY ROAD 61 80 12/27/1999 CL SAN JOSE BLOSSOM HILL RD 17 37 10/18/2000 CL, SILT SAN JOSE BURKE & SENTER 31 53 11/13/2000 CL SM San Jose Campus & N. 1st St 5 130 10/18/2007 SAN JOSE CAPITOL & STORY 20 25 2/10/2000 CL SM SAN JOSE COLEMAN & BROKAW 28 30 6/21/1999 CL GP SAN JOSE COLEMAN AVENUE 9 18 5/17/2000 CL SAN JOSE COLEMAN AVENUE 10 17 4/21/2000 CL SAN JOSE E. SANTA CLARA 18 20 12/19/2000 SM,CL SAN JOSE FMC 13 40 10/27/1999 CL, SM SAN JOSE FMC 12 25 8/17/2000 CL SM SAN JOSE FMC 7 40 3/27/2000 CL/SAND SAN JOSE FMC FACILITY 10 103 7/21/2000 CL/SAND SAN JOSE FMS 5 45 1/22/2001 CL/SAND SAN JOSE GE SITE 25 75 3/10/2001 CL/SAND SAN JOSE GREAT AMERICA PARKWAY 10 50 6/1/2000 CL/SAND SAN JOSE GREAT AMERICA PKWY. 10 30 9/6/2000 CL SAN JOSE HEADQUARTERS DRIVE 12 15 8/22/2000 CL SAN JOSE INDIO STREET 11 15 12/14/1999 GP CL SAN JOSE KEEBLER AVENUE 25 30 9/28/2000 SM SAN JOSE KNTV NEWS 16 87 12/10/1999 CL/SAND SAN JOSE LEGACY TERRACE SITE 6 40 1/25/2001 CL/SAND SAN JOSE LENZEN AVENUE 27 30 7/15/2000 GP/CL SAN JOSE MARKET STREET X 47.5 10/10/2000 CL SAN JOSE MCKEE & CAPITAL 8 X 12/28/2000 SW SM SAN JOSE MILLER STAR 50 10/5/2000 SAND/CL SAN JOSE MOHAWK SITE 4 35 9/18/2000 CL/SAND San Jose Montague Expressway & Orchard St. 8 40 1/11/2008 SAN JOSE N. 1ST & BROKAW 9 40 11/22/1999 CL San Jose Orchard Parkway & Atmel Way 8 100 5/30/2007 SAN JOSE PARKING LOT MARKET STREET 35 60 9/17/1999 CL, SW, SM, GP

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 62 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN JOSE PARKING LOT MARKET STREET 25 100 11/15/1999 CL, GP, SW, SM SAN JOSE RENTAL CAR PARKING LOT 10 100 4/24/2000 SAND/CL SAN JOSE ROUTE 8 20 100 7/10/2000 SAND/CL SAN JOSE ROUTE 87 40 105 2/11/1999 CL/SAND SAN JOSE S. KING RD. & ALUM ROCK 40 9/7/2000 CLAY SAN JOSE SAN CARLOS X MARKET 28 95 11/12/2000 SAN JOSE SAN IGNACIO AVENUE 13 24 10/10/2000 CL,GP SAN JOSE SAN IGNACIO AVENUE 35 60 10/19/1999 X SAN JOSE SAN JOSE 10 15 2/7/2000 CL SM SAN JOSE SAN JOSE MARRIOT 20 40 10/16/2000 SAND/CL SAN JOSE SHELL SITE 12 35 11/9/2000 CL/SAND SAN JOSE SHELL SITE 20 60 7/7/2000 CL/SAND SAN JOSE SHELL SITE 41 68 2/6/2001 CL/SAND SAN JOSE SHELL SITE 70 66 6/3/1999 CL/SAND SAN JOSE SHELL SITE 13 128 12/18/2000 SAND/CL SAN JOSE SHELL SITE 6 25 9/11/2000 CL/SAND SAN JOSE SOUTH MARKET STREET 15 30 9/5/2000 SM CL GP SAN JOSE TENNANT AVENUE 15 4/17/1999 CL/GP SAN JOSE TOSCO 5995 23 75 6/28/2000 CL/SAND SAN JOSE TOSCO 5995 23 60 4/17/2000 CL/SAND SAN JOSE TRIMBLE 10 20 10/4/1999 GP SM CL SW SAN JOSE VASCO &DALTON RD. 28 45 8/30/2000 CL/SAND SAN JOSE W. CARLOS & E. MARKET 6 15 1/28/2000 SM CL SAN JOSE WHITE STREET 22 36 10/21/1999 X SAN JOSE WINCHESTER BLVD. 40 42 6/19/2000 CL/GP SAN JOSE WORLD OIL 75 21 78 5/3/1999 CL/SAND SAN JOSE WYSE 20 40 4/24/2000 CL SAN JOSE X 27 27 4/10/2000 CL GP SAN JOSE X 20 8/31/2000 SM CL SAN JOSE X 10 16 4/5/2000 GP SW SAN JOSE X 25 30 5/17/1999 SW CL SAN JOSE X 15 42 5/10/1999 SM SAN LEANDRO 100 SAN LEANDRO BLVD. 17 30 3/23/2000 CL SAN LEANDRO 100 TH 24 30 2/24/2000 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 63 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN LEANDRO 1100 BANCROFT AVENUE 17 20 9/16/1999 CL San Leandro 1200 block Bancroft Ave. 41 90 11/15/2007 SAN LEANDRO 1400 DOOLITTLE DR 13 15 7/17/2000 SAN LEANDRO 14000 E. 14TH STREET X 25 10/14/1999 SM CL SAN LEANDRO 14000 E. 14TH STREET 10 65 2/19/2000 SM CL SAN LEANDRO 14000 EAST 14TH STREET 20 20 12/1/2000 CL SAN LEANDRO 14000 GRIFFITH STREET 29 30 2/14/2000 CL SW SM SAN LEANDRO 14000 WASHINGTON AVENUE 27 35 11/27/1999 SM CL SAN LEANDRO 1500 FACTOR AVENUE 6 9 3/24/1999 X SAN LEANDRO 15000 WASHINGTON 20 30 10/30/1999 X SAN LEANDRO 16000 ASHLAND 4 20 12/15/1999 SM CL SAN LEANDRO 1700 150TH AVENUE 15 15 11/20/2000 CL San Leandro 1900 block Williams St. 9 41 10/3/2007 SAN LEANDRO 1900 DAVIS STREET X 11 11/24/1999 GP,CL SAN LEANDRO 1900 WILLIAMS STREET 13 15 6/26/2000 CL GP SAN LEANDRO 200 E. 14TH STREET 16 25 2/14/2000 X SAN LEANDRO 2000 DAVIS X 5 10/15/1999 CL SAN LEANDRO 2300 WASHINGTON AVENUE 25 70 1/13/1999 SM/CL SAN LEANDRO 2700 MERCED 8 12 10/5/1999 GP,CL SAN LEANDRO 2800 ALVARADO STREET 25 35 5/23/2000 CL SAN LEANDRO 400 HESTER STREET 14 30 10/22/1999 CL/SM SAN LEANDRO 600 ALADIN AVENUE 14 20 12/11/2000 CL SW SAN LEANDRO 700 139TH AVE 13 20 2/5/2000 CL SAN LEANDRO ALADDIN & ALVERDAO 7.5 15 8/9/1999 CL SW GP SAN LEANDRO CASTLE STREET 8 20 3/27/2000 GROUT SEAL/SANDPACK SAN LEANDRO DAVIS & 880 X 25 10/17/2000 CL SM GP San Leandro E 14th St. 11 50 1/13/2007 SAN LEANDRO EBMUD 30 50 9/1/2000 SAND/CL SAN LEANDRO EDEN CENTER NONE 6 11/17/1999 CL SAN LEANDRO EDEN CENTER 8 186 8/21/1999 CL SAN LEANDRO KAISER AEROSPACE 7 60 5/1/2000 SAND/CL SAN LEANDRO KAISER/DOLLITTLE STREET 8 30 1/19/1999 X SAN LEANDRO KAISER/DOLLITTLE STREET 6 40 4/21/1999 SM,CL SAN LEANDRO MERCED ROAD 6 12 2/8/1999 CL SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 64 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN LEANDRO NICH0LSON & FAIRWAY 10 15 4/15/1999 CL SAN LEANDRO ORO LOMA WWTP 0 80 11/20/2000 CL SAN LEANDRO X 10 20 3/29/1999 X SAN LEANDRO X 25 35 8/23/1999 CL SM SW SAN LORENZO 1600 ASHLAND AVENUE 4 18 6/15/2000 SM CL SAN LORENZO 2000 W. 140TH STREET 9 20 5/2/2000 CL SAN LORENZO 2600 GRANT 31 43 10/13/2000 SM CL SAN MARTIN 12000 LLAGAS AVENUE 11 16 6/15/2000 GP SW SM CL SAN MATEO 100 ELLIWORTH 32 35 4/27/2000 CL/GP San Mateo 1400 block Mariners Island Blvd. 3 100 12/11/2007 SAN MATEO 1400 E. 3RD 4 14 9/21/2000 SW,CL San Mateo 1600 block S. El Camino Real 21 50 10/3/2007 SAN MATEO 1800 SO. NORFOLK 4 23 3/14/2000 CL BAY MUD SAN MATEO 1800 SO. NORFOLK 15 28 6/4/1999 SW GP BAY MUD SAN MATEO 1900 EL CAMINO REAL 6.5 20.5 8/22/2000 CL,WEATHERED ROCK SAN MATEO 1900 EL CAMINO REAL 5 19 6/19/2000 CL/SILTS SAN MATEO 300 8TH AVENUE 10 29 12/27/1999 CL SW SAN MATEO 3700 SOUTH EL CAMINO REAL 17 27.5 6/16/2000 ROCK/SANDSTONE SAN MATEO 3700 SOUTH EL CAMINO REAL 30 5/5/2000 CL/SM SAN MATEO 3RD & DELEWARE 5 12 3/14/2000 X SAN MATEO 700 POLHEMUS ROAD 9 30 11/16/2000 SM SAN MATEO CHESAPEAK & SEAPORT 3 23 3/1/2000 SM CL SAN MATEO CONCAR & DELEWARE 20 25 4/26/1999 CL SW San Mateo S. Delaware & Saratoga 5 20 7/2/2007 SAN MATEO SAN MATEO DRIVE & BALDWIN 9 16 12/14/1998 GP SW CL SAN MATEO SLWWTP SITE 12 30 9/14/2000 CL SAN PABLO 11000 SAN PABLO AVENUE 7 17 3/13/2000 CL SAN PABLO EL PORTAL 15 30 3/10/2000 SM CL SAN PABLO GIANT HIGHWAY 15 25 3/8/2000 CL SAN RAFAEL LOCH LOMA 13 13 7/6/1999 SM CL SAN RAFAEL 100 BELLAM 4 10 6/16/2000 CL/BAYMUD SAN RAFAEL 1000 ANDERSON NONE 16 3/20/2000 SM CL GP SAN RAFAEL 1000 FRANCISCO BLVD. E. 17 20 8/27/1999 BAY MUD SAN RAFAEL 1000 NORTHGATE DRIVE 20 6/28/2000 SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 65 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SAN RAFAEL 1500 2ND STREET 7 15 7/24/1999 SM CL SAN RAFAEL 2400 KERNER BLVD 15 20 2/25/2000 X SAN RAFAEL 30 RITTER STREET X 14 8/8/2000 SM,GP,BAYMUD SAN RAFAEL 3200 KERNER BLVD X 15 6/26/1999 CL SAN RAFAEL 4300 OLD REDWOOD HWY. 3 66 11/14/2000 CL SAN RAFAEL 600 N. FRANCISCO BLVD. 7 10 2/28/2000 SM GP BAY MUD SAN RAFAEL 800 3RD STREET 5 15 8/25/1999 SAN RAFAEL 800 IRWIN STREET 8 23 10/21/1999 EVERYTHING SAN RAFAEL 800 IRWIN STREET 7 14 11/24/1999 CL SAN RAFAEL ANDERSON DRIVE 30 6/19/2000 BAYMUD SAN RAFAEL E. SIR FRANCIS DRAKE X 15 6/17/1999 FILL SAN RAFAEL SAN PEDRO 6 20 2/1/2001 GP CL San Rafael Shoreline Parkway 21 150 1/29/2007 SAN RAFAEL X X 20 9/27/2000 CL SAN RAFAEL X 20 48 6/26/2000 GROUT SEAL SAN RAMON 11000 DUBLIN BLVD 22 33 9/6/2000 CLAY,SILTS SAN RAMON 20000 SAN RAMON VALLEY BLVD 10 15 12/21/2000 SW CL San Ramon Bollinger Canyon 9 70 8/19/2008 SANGER 4800 S. GREENWOOD AVE 19 36 6/8/2000 SAND SANTA CLARA 1000 MARTIN AVE 6 5 8/4/2000 PEAGRAVEL,BUCKFIL Santa Clara 1200 block Campbell Ave. 6 50 5/10/2007 SANTA CLARA 1600 LAFAYETTE STREET 10 4/18/2000 SANTA CLARA 1600 SCOTT BLVD 20 20 7/5/2000 SM CL SANTA CLARA 1700 SPACE PARK DRIVE 10 20 8/24/2000 CL SM Santa Clara 200 block Mission College Blvd. 10 100 8/30/2007 Santa Clara 2200 block lawson lane 8 80 5/22/2007 SANTA CLARA 2400 DE LA CRUZ 15 20 5/24/2000 SM Santa Clara 2800 block Stevens Creek Blvd. 40 60 2/21/2007 SANTA CLARA 300 W. BROKAW ROAD 15 30 2/16/2000 GP SM SANTA CLARA 3000 RAYMOND STREET 8 16 3/16/2000 CL/SILTS SANTA CLARA 3100 JAY ST 0 20 8/16/2000 GROUT,SAND SANTA CLARA 3100 JAY STREET 20 45 3/21/2000 X SANTA CLARA 3100 JAY STREET X 20 8/29/2000 GROUT,SAND PACK SANTA CLARA 3400 WOODWARD AVENUE 8 2/2/2000 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 66 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SANTA CLARA 3700 LAFAYETTE ST 56 60 6/28/2000 GP,CL SANTA CLARA 3800 HOMESTEAD 40 110 7/28/2000 SANTA CLARA 3800 HOMESTEAD 40 110 9/8/2000 FLOWING SAND SANTA CLARA 3800 HOMESTEAD ROAD 45 150 6/28/2000 CL/SAND SANTA CLARA 3800 HOMESTEAD ROAD 45 97 1/10/2000 CL/SAND SANTA CLARA 500 MANSION PARK DR 3 20 6/26/2000 SAND,CL Santa Clara 600 block El Camino Real 16.5 52 7/18/2008 SANTA CLARA 700 CHESNUT STREET 20 5/23/2000 SANTA CLARA 800 REED STREET 14 37 2/25/2000 GP SW SANTA CLARA ARCO 2082 10 64 7/26/2000 CL/SAND SANTA CLARA BAYFRONT & ALVISO 6 30 5/31/2000 CL SANTA CLARA COLEMAN 20 44 5/3/2000 SM CL SANTA CLARA COLEMAN & BROKAW N/A 7.5 6/27/2000 GP SW SM SANTA CLARA COSTCO SITE 10 45 2/25/2001 CL/SAND SANTA CLARA COSTCO SITE 10 82 2/2/2001 CL/SAND SANTA CLARA COSTCO SITE 10 65 2/19/2001 CL/SAND SANTA CLARA EL CAMINO REAL 20 57 1/24/2000 CL GP SM SANTA CLARA FMC 16 20 4/10/2000 CL SM GRAVEL SANTA CLARA FMC/333 W. BROKAW 17 25 4/4/2000 SM CL GP SANTA CLARA GREAT AMERICA PARKWAY 0 15 3/20/2000 CL SANTA CLARA HOMESTEAD X 105 5/18/2000 SANTA CLARA MARTIN & WALSH 45 60 3/9/2001 CL SANTA CLARA MILL & MONTAGUE 15 30 9/7/2000 GP CL SM SANTA CLARA NSC 10 65 12/8/2000 CL/SAND SANTA CLARA REED & COLEMAN 16 28 9/5/2000 CL GP SW SANTA CLARA REED AND LAFAYETTE 10 30 12/15/2000 CL SM FS SANTA CLARA REED STREET 20 45 4/12/2000 CL SM GP SANTA CLARA SANTA CLARA LANDFILL 9 50 1/5/2000 CL SANTA CLARA SCVWD MTBE PROJECT 16 107 5/18/2000 SAND SANTA CLARA SPACE PARK DRIVE 6 25 7/27/2000 CL/SAND SANTA CLARA SPACE PARK DRIVE 6 25 6/17/2000 CL/SAND SANTA CLARA THIRTY OIL #174 36 80 1/7/2000 SAND/GP/CL SANTA CLARA TRIMBLE ROAD 20 44 6/22/2000 GP SW SM CL SANTA CLARA X X 10 8/23/2000 CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 67 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

Santa Cruz 1000 block River Road 13 54 9/26/2007 SANTA CRUZ 1100 PACIFIC AVENUE 25 30 11/29/2000 CL SM SANTA CRUZ 2200 7TH AVENUE 10 10 11/21/2000 SM CL SW SANTA CRUZ CAVE TRAIN SITE 6 63 6/19/2000 SAND SANTA CRUZ CENTRAL 15 25 2/20/2001 SW SANTA CRUZ LANDFILL 15 15 9/28/2000 BEDROCK, FILL SANTA CRUZ LAUREL STREET BRIDGE 2 85 6/21/2000 SAND SANTA CRUZ LAUREL STREET BRIDGE 3 55 9/27/1999 SAND SANTA CRUZ MATTHEW & DE LA CRUZ 9 13 11/17/2000 SM CL SANTA CRUZ PACIFIC & WASHINGTON X 30 1/20/2000 CL SM SANTA CRUZ PUMP STATION, RIO DEL MAR 23 40 6/20/2000 X SANTA MARIA 6500 DOMINION ROAD 13 13 8/4/2000 SANTA ROSA 1000 SANTA ROSA AVENUE 18 25 10/20/1999 CL SANTA ROSA 1100 BENNETT VALLEY ROAD 6 20 10/4/2000 CL SANTA ROSA 1100 BENNETT VALLEY ROAD 12 15 6/12/2000 GP/CL Santa Rosa 1100 block Sebastopol Rd 5 75 1/21/2008 SANTA ROSA 1300 4TH STREET 8 20 6/23/2000 CL SANTA ROSA 1400 FARMERS LANE 4 10 10/19/1999 SM SANTA ROSA 200 DUTTON 35 40 5/23/2000 SM SW CL SANTA ROSA 200 FORTH STREET 7 20 10/13/2000 CL, GP SANTA ROSA 2000 GUERNVILLE ROAD 9 11 1/26/2000 GP Santa Rosa 2200 block Mendocino Ave. 10 80 10/18/2007 Santa Rosa 2700 block Yulupa Ave 10 80 9/14/2007 SANTA ROSA 30 OLD COURT HOUSE SQ. 8-Jan 20.5 11/6/1999 X SANTA ROSA 30 OLD COURT HOUSE SQ. 8 20.5 1/24/2000 GP, CLAY SANTA ROSA 30 OLD COURT HOUSE SQ. 8 25 11/13/2000 GP,CLAY SANTA ROSA 30 OLD COURT HOUSE SQ. 8 18.5 11/17/2000 GP, CLAY SANTA ROSA 3200 INDUSTRIAL WAY 4 25 4/19/2000 SM CL SANTA ROSA 400 YOLANDA AVENUE 17 32 9/28/1999 SM SANTA ROSA 400 YOLONDA AVENUE 20 75 8/10/1999 CL/SAND SANTA ROSA 700 STEELE LANE 5 20 10/7/1999 GP,CL,COBBLES SANTA ROSA 90 FRANCES 30 65 10/30/2000 SANTA ROSA 900 FARMERS LANE X 10.5 4/24/2000 CL SANTA ROSA PEARSON STREET 16'-20' 24 1/21/2000 SM/GP/CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 68 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SANTA ROSA ROSELAND AREA 3 150 3/8/2000 CL/SAND SANTA ROSA SEBASTOPOL ROAD 8'-11' 15 6/12/2000 CL/GP/SAND SANTA ROSA SHELL SITE 9 120 4/6/2000 CL/SAND SANTA ROSA SHELL SITE 18 92 4/20/2000 SAND/CL SANTA ROSA TODD AVE & SANTA ROSA 40 8/3/2000 GP SW SM CL SANTA ROSA X 32 10/24/2000 SANTA ROSA X 12 85 12/5/1999 CL/SM SANTA ROSA X 13 16 1/26/2000 CL/SM SARATOGA CHEVRON, SARATOGA AVE. 30 60 12/1/2000 CM,SM,ROCK SARATOGA HWY 4 & RAILROAD 75 75 11/27/2000 CL/SAND SAUSALITO 2900 BRIDGEWAY 8 14 8/30/2000 BAY MUD SAUSALITO 2900 BRIDGEWAY AVENUE X 20 9/13/2000 SM SAUSALITO 300 JOHNSON ST 10 20 10/9/2000 SAND,GROUT SCOTIA EUREKA SOUTHERN 6 20 12/6/1999 CL SM SCOTTS VALLEY 200 MT. HERMAN ROAD 70 1/2/2001 SAND SCOTTS VALLEY 200 MT. HERMAN ROAD 95 7/11/2000 SW SCOTTS VALLEY 90 MOUNT HEMAN ROAD 29 8/28/2000 SM/GP SCOTTS VALLEY 90 MT. HERMAN ROAD 8 40 1/12/2000 SW SCOTTS VALLEY SCOTTS VALLEY DRIVE 12 37 7/24/2000 SAND STONE SCOTTS VALLEY SCOTTS VALLEY ROAD X 25 10/29/1999 GP CL SCOTTS VALLEY X 26 28 7/17/2000 CL SEARS POINT SONOMA CREEK BRIDGE 1 40 3/1/1999 CL SEASIDE 1200 FREMONT BLVD. 28.5 40 9/27/1999 FLOWIING SAND SEASIDE 1400 DEL MONTE BLVD X 33 12/12/2000 SW SM SEBASTAPOL 9800 BODEGA HIGHWAY 7 13 9/29/1999 SM CL SELBY SELBY TERMINAL 12 70 2/2/2001 CL SKAGGS ISLAND SKAGGS ISLAND 30 45 6/28/1999 BAY MUD SONOMA 200 AIRPORT BLVD. 17 25 2/15/1999 CL/SM/GP SONOMA 500 W NAPA ST 13 25 2/3/2000 GP,COBLES,ROCK SONOMA 600 BROADWAY 25 50 2/2/2000 GP CL SONOMA BRIDGE 25 50 7/5/2000 X SONOMA WOHLER ROAD 9 20 7/11/2000 GP, CL, SW SOQUEL 2700 41ST 6 10 4/14/1999 SAND,CL SOQUEL 2700 41ST AVENUE 84 85 6/2/2000 SAND STONE

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 69 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

South San Francisco 300 block Grand Ave. 12 54 3/9/2007 SPREKELS 100 SPREKELS BLVD NONE 25 11/1/2000 SM CL ST. HELENA 1200 WHITEHALL LANE 21 30 11/7/2000 CL GP ST. HELENA OAK & MITCHELL AVENUE 20 30 10/11/2000 GP/SW/CL/SM STOCKTON 7-ELEVEN STORE 8 20 2/5/2000 CL, SM, CL STOCKTON 1200 COUNTRY CLUB BLVD. 13.5 30 3/15/2000 CL,SILTS STOCKTON 1200 S. WILSON WAY X 85 4/3/2000 CL STOCKTON 1300 W. WEBER AVENUE 40 55 8/31/2000 SM CL Stockton 13000 block S. Airport Way 8.5-15 50 9/28/2007 Stockton 1600 block Turnpike Rd. 18 180 9/3/2008 Stockton 1900 block S. El Dorado 25 120 2/22/2008 STOCKTON 200 EL DORADO STREET 24 30 10/14/1999 SM CL STOCKTON 2400 E. FREEMONT STREET 51.5 65 2/10/2000 STIFF CLAYS STOCKTON 2400 E. FREMONT 60 65 6/7/2000 SW,CL STOCKTON 2500 COUNTRY CLUB BLVD 25 60 5/22/2000 CL,FLOWING SAND STOCKTON 2500 COUNTRY CLUB ROAD X 36 5/30/2000 CL, SM STOCKTON 2600 SOUTH AIRPORT WAY 40 10/17/2000 STOCKTON 3000 WEST BEJIMAN HOLT 10 20 4/10/2000 FLOWING SAND Stockton 3100 block S. Eldorado St. 35 125 10/25/2007 STOCKTON 3400 SO. AIR PORT WAY 47 55 3/27/2000 CL STOCKTON 3500 NAVY DRIVE 15 30 9/6/2000 SAND/CL/SILTS STOCKTON 3700 MUMFORD AVENUE 33 144 10/18/1999 SAND/CL STOCKTON 40 SOUTH WILSON WAY 14 15 2/14/2000 SANDY GP STOCKTON 40 SOUTH WILSON WAY 50 70 1/15/2001 CL Stockton 4000 block Main St. 58 120 5/21/2008 STOCKTON 4000 EL DORADO 20 65 2/15/2000 CL Stockton 600 block E. Charter Way 33 150 12/18/2007 Stockton 600 block W. Charter Way 30 100 9/11/2007 STOCKTON 600 E. MINER STREET 25 100 8/9/2000 CL/SAND STOCKTON 6100 PACIFIC AVE 0 3 3/16/2000 CL STOCKTON 700 EAST CHARTER WAY 35 100 1/4/2000 CL STOCKTON 900 E. ARQUES STREET 40 75 1/13/2000 X STOCKTON 900 E. WEBSTER AVENUE 38.5 40 7/31/2000 CL, SAND Stockton Airport Way 40.5 105 5/29/2007

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 70 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

STOCKTON APACHE PLASTICS 44 160 5/22/2000 CL/SAND STOCKTON BEN HOLT DRIVE AT I-5 75 80 6/30/2000 SM CL STOCKTON CONNELL TRUCK 46 105 2/26/1999 CL/SAND STOCKTON CONTINENTAL GRAIN 17 20 11/16/2000 CL,SM,SW STOCKTON COUNTRY CLUB ROAD 11 53.5 5/8/2000 F.S. STOCKTON COUNTRY CLUB ROAD X 85 10/20/2000 SAND, CL STOCKTON DEL MONTE PLANT 11 15 1/11/2000 GP CL STOCKTON DEL MONTE SITE 51 150 8/3/2000 CL/SAND STOCKTON DEL MONTE SITE 51 147 3/6/2000 CL STOCKTON DEL MONTE SITE 51 150 2/22/2000 CL STOCKTON EL DORADO/CLAYTON 5 15 6/12/2000 CL SM SW STOCKTON ELDORADO & WEBER STREET 16 100 4/25/2000 CL/SAND STOCKTON FRESNO STREET 35 45 8/21/2000 SW SM CL STOCKTON GETTYSBERG 55 70 9/21/2000 CL, SW, GP, SM STOCKTON GETTYSBERG X 45 3/31/2000 CL, GP STOCKTON HEARTE 31 90 1/18/2000 CL STOCKTON IBC 19 120 1/17/2000 CL STOCKTON INDRUSTRIAL WAY 40 65 7/28/2000 CL,SM STOCKTON KNS SITE 33 121 4/21/2000 CL STOCKTON LINCOLN 45 70 12/29/2000 SM, CL STOCKTON LINCOLN CENTER 15 45 3/15/2000 X STOCKTON LINCOLN CENTER 5 173 5/26/2000 CL/SAND STOCKTON NAVY DRIVE 5 25 9/14/2000 GROUT/SANDPACK STOCKTON OLIVAREZ PROPERTY 30 80 4/5/2000 CL/SAND STOCKTON OLIVAREZ PROPERTY 30 100 3/31/2000 CL/SAND STOCKTON OLIVIAS PROPERTY 20 125 6/30/2000 CL/SAND STOCKTON PERSHING & ROSE MARIE 15 25 5/27/2000 CL STOCKTON PORT OF STOCKTON 10 54 12/10/1999 CL/SAND STOCKTON PORT OF STOCKTON 8 40 1/15/1999 CL STOCKTON PORT OF STOCKTON 5 105 3/16/1999 CL STOCKTON RAW SITE 33 150 10/19/1999 CL/SAND Stockton S. Eldorado & E. Jackson 25 200 9/27/2007 STOCKTON SAN JOAQUIN CEMETERY 40 125 7/26/1999 SAND/CL STOCKTON SHELL SITE 17 84 3/13/2000 SAND/CL

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 71 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

STOCKTON SHELL SITE 31 100 1/18/2000 SAND/CL STOCKTON SHELL SITE 2494 51 120 7/10/2000 CL/SAND STOCKTON STEFONO'S GAS 35 122 2/14/2000 SAND/CL STOCKTON TRACY LOGISTICS 9 30 2/4/2000 CL STOCKTON UNITED GAS 22 100 4/1/1999 CL/SAND STOCKTON VERNALIS 35 80 4/10/2000 STOCKTON WASHINGTON STREET 42 50 1/10/2000 X STOCKTON WASHINGTON STREET 12 70 6/17/2000 SAND/CL STOCKTON WEST WEBER STREET 65 85 11/13/1999 SM CL BAY MUD STOCKTON WILSON WAY 37 X 6/29/2000 CL, SM STOCKTON X X 90 9/11/2000 SW GP CL STOCKTON X 30 37 6/27/2000 SM CL STOCKTON X 4 36 8/9/2000 CL/SM STOCKTON X 15 70 11/22/1999 SAND/CL STOCKTON X 30 20 4/8/1999 CL SUISUN CITY 100 SUISUN VLY ROAD 30 45 7/23/1999 SM CL SUISUN CITY GRIZZLY ISLAND HWY 12 3 15 7/22/1999 SM,BAYMUD SUNNYVALE 900 ARQUES AVENUE X 25 7/18/2000 CL SUNNYVALE 100 CASPIAN COURT X 52 2/12/2001 CL, SW SUNNYVALE 1100 HOMESTEAD 50 115 5/1/2000 CL,SAND SUNNYVALE 1200 ELKO DRIVE 9 15 3/17/2000 CL SM SUNNYVALE 1800 MONTEREY STREET 8 15 (45) 6/28/2000 X SUNNYVALE 1ST & C STREET 11 15 7/12/2000 CL SM SUNNYVALE 300 PASTORIA X 20 4/21/2000 SM CL SUNNYVALE 300 SOQUEL WAY 11 18 5/3/2000 SM CL SUNNYVALE 3600 NORTH PASTORIA 25 40 6/5/2000 SM CL FILL SUNNYVALE 400 EVELYN AVENUE 10 55 3/13/2001 SM CL SUNNYVALE 400 HENDY AVENUE 20 41.5 10/16/2000 CL SAND/GP SUNNYVALE 400 INDIO WAY 40 65 12/22/2000 X SUNNYVALE 400 PASTORIA 30 35 10/26/2000 CL GP SUNNYVALE 5TH & MATILDA 42 37 3/16/2000 X SUNNYVALE 700 MATHILDA AVE 8.5 20 5/4/2000 CL,SM,SW,GP SUNNYVALE 800 EL CAMINO 73 75 1/22/2001 X SUNNYVALE 800 EL CAMINO 30 40 1/6/2001 X

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 72 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SUNNYVALE 800 WEST EVELYN AVENUE 8 25 6/30/2000 CL CP (SM) SUNNYVALE 900 ARQUE AVENUE 9 32 10/13/2000 CL/SAND/GP SUNNYVALE 900 ARQUES 15 24 8/30/2000 SUNNYVALE 900 E. ARQUES AVENUE 10 25 11/30/2000 CL SUNNYVALE 900 KIFER ROAD 41 45 11/29/2000 SW SUNNYVALE 900 KIZER RD 10 35 9/7/2000 SUNNYVALE 900 KIZER RD X 14.5 3/28/2000 GARBAGE,GP SUNNYVALE 900 KIZER RD 11 123 1/31/2000 SUNNYVALE 995/999 EAST ARGUES 15 27 9/25/2000 ROCK SUNNYVALE CAE SITE 2 132 4/11/2000 CL/SAND SUNNYVALE CHERRY ORCHARD 55 60 11/7/2000 SW,CL SUNNYVALE DEL REY & PASTORIA 30 30 6/6/2000 GP SW SUNNYVALE DUANE AVENUE 28 40 12/12/2000 CL CM SUNNYVALE DUANE STREET 30 38 12/19/2000 SM CL SUNNYVALE HIGGENS LOT 7 60 5/30/2000 CL SUNNYVALE INDIO 53.5 65 9/11/2000 CL GP SUNNYVALE LOCKHEED 30 10/24/2000 CL, GP SUNNYVALE LUMBER 30 30 9/15/1999 CL,GP SUNNYVALE MATHILDA & INDIO WAY 29 40 11/1/2000 X SUNNYVALE MOHAWK 9 25 9/14/1999 GP, CL SUNNYVALE MOHAWK 15 35 10/3/2000 SM SUNNYVALE MOHAWK 10 23 11/14/2000 X SUNNYVALE MOHAWK 10 23 11/8/2000 X SUNNYVALE MOHAWK 10 23 10/19/2000 X SUNNYVALE MOHAWK SITE 7 41 3/17/2000 SAND/CL SUNNYVALE N. PASTORIA 10 34 10/20/2000 SUNNYVALE OLD SECURITY PACIFIC 29 38 2/29/2000 X SUNNYVALE SUNNYVALE 8 22 5/14/1999 CL,GP, SAND SUNNYVALE SUNNYVALE LUMBER 11 25 9/29/2000 SW SM CL SUNNYVALE WATER POLLUTION CONTROL 18 150 11/14/2000 SUNNYVALE WATER POLLUTION CONTROL 15 60 11/6/2000 SUNNYVALE X 17 30 4/4/2000 CL SUNOL 37000 NILES BLVD 65 70 2/1/2000 CL Sunol 7000 block Altenour Way 17 50 2/28/2007

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 73 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

SUNOL WELCH CREEK X 20 7/25/2000 GP, CL, BEDROCK SUSANVILLE SIERRA ARMY DEPOT X 29 7/7/2000 SAND SUTTER MARYSVILLE 75 90 3/9/2000 ROCK,SAND SUTTER SUTTER POWER PLANT 2 90 3/2/2000 CL/SAND TAHOE X 12 24 1/6/2000 ROCKS TAHOE CITY 300 RIVER RD 10 13 1/23/1999 TAHOE CITY 300 RIVER RD 6 20 3/29/1999 TAHOE CITY 300 RIVER ROAD 25 60 11/23/1999 CL SM TAHOE CITY 3200 N LAKE TAHOE 10 15 4/6/1999 TAHOE CITY NORTH LAKE TAHOE BLVD X 15 12/29/1999 GP THORNTON PG&E X 22 10/13/1999 X THORNTON THORNTON 12 20 9/29/1999 CL/SM TIBURON TIBURON BLVD. X 13 2/15/1999 BAY MUD TRACY UNION PACIFIC RAILROAD X 25 7/13/2000 SAND PACK TRACY 2300 S. CHRISSMAN ROAD 14 80 6/1/2000 SM CL TRACY 25000 BANTA SITE 16 100 12/29/1999 SAND/CL TRACY 4100 INDUSTRIAL WAY 12 15 6/14/1999 HP TRACY 500 WEST GRANT LINE ROAD 6 20 2/28/2000 CL Tracy 6th & Central 16 60 4/21/2008 TRACY 700 EAST.11TH 5 16 6/28/2000 CL,SAND TRACY 7-11 SOUTHLAND 35 55 4/3/2000 CL TRACY 900 DEERWOOD LANE 14 40 5/7/2000 GP,SM,CL TRACY ARMY DEPOT 101 117 10/10/2000 TRACY ARMY DEPOT 3.5 11/8/2000 CL TRACY ARMY DEPOT 13.5 2/21/2000 CL/SILTS TRACY BANTA ROAD & 11TH STREET 25 55 6/6/2000 CL SM TRACY CHRISMAN ROAD 13.5 2/21/2000 CL/SILTS TRACY CHRISSMAN ROAD 8 12 6/12/2000 CL SM TRACY CORRAL HALLOW ROAD 7 40 4/30/1999 SAND/CL TRACY DEFENSE DEPOT X 55 1/17/2001 TRACY DEFENSE DEPOT X 120 2/22/2001 TRACY DEFENSE DEPOT 15 35 3/5/2001 TRACY DEFENSE DEPOT X 4 12/8/2000 TRACY DEFENSE DEPOT 10 55 9/7/2000

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 74 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

TRACY DEFENSE DEPOT 10 105 9/5/2000 Tracy E 6th St. & N. Central 16.6 60 2/13/2008 TRACY SINGH SITE 10 70 3/28/2000 CL TRACY SUR LAND HOMES 9 14 5/15/2000 CL TRACY TRACY ARMY DEPOT X 35 1/15/2001 GP,SAND PACK TRACY TRACY ARMY DEPOT 10 100 10/17/2000 TRACY TRACY ARMY DEPOT 8 100 7/3/2000 TRACY TRACY DEFENCE DEPOT 12 70 11/22/2000 CL/SAND TRACY TRACY DEFENCE DEPOT 38 115 8/2/2000 CL/SAND TRACY TRACY DEFENCE DEPOT 7 43 8/7/2000 CL/SAND TRACY TRACY DEFENSE DEPOT 8 20 11/1/2000 SM CL TRACY TRACY DEFENSE DEPOT 10 16 3/9/2000 X TRACY TRACY DEFENSE DEPOT 10 15 5/8/2000 SM TRACY TRACY DEFENSE DEPOT 25 55 5/1/2000 SM,CL TRACY TRACY DEFENSE DEPOT 25 50 4/19/2000 CL,SAND TRACY TRACY DEFENSE DEPOT X 35 7/5/2000 GP,FLOWING SAND TRACY TRACY DEFENSE DEPOT 21 9/5/2000 SAND/CL TRACY X 10 20 5/12/2000 CL SM TRACY X 13 11/8/1999 CL TRACY X 15 20 1/14/1999 SM TRACY X 10 50 1/28/1999 SAND/CL TRACY TRACY DEFENSE DEPOT X 13 5/15/2000 CL TREASURE ISLAND AREA 12 8 15 9/26/2000 SW,SM TREASURE ISLAND AREA 12 X 17 1/3/2000 SW,SL TREASURE ISLAND AREA 12 4.8 20 6/11/1999 SW,SL TRIGO X 5 12 5/15/2000 SW SM TURLOCK 100 N. GOLDEN STATE N. 20 45 5/21/2000 SM CL Turlock 700 block Lander Ave. 11.8 72 2/26/2007 TURLOCK GOLDEN STATE BLVD. 15 25 4/17/2000 SW SM CL TURLOCK GOLDEN STATE BLVD. 15 65 4/19/2000 SW SM GP UKIAH 8500 EAST RD 8 25 2/3/2000 UNION CITY 2900 FABER STREET 12 30 11/8/1999 CL UNION CITY 2900 FABER STREET X 23 3/23/2000 PORLAND,SM UNION CITY 29000 UNION CITY 8 17 7/24/2000 SM

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 75 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

UNION CITY 33000 7TH STREET 25 30 3/11/1999 X UNION CITY 33000 7TH STREET X 52 4/14/1999 GROUT SEAL,SAND UNION CITY 33000 CENTRAL AVENUE 35 50 4/18/2000 SM UNION CITY 34000 MISSION BLVD. X 17 7/10/2000 GP,ROCK UNION CITY 5000 BENSEN 12 2/2/1999 UNION CITY 700 ZWISSIG WAY 5 15 3/22/1999 CL UNION CITY 7TH ST 35 45 1/29/2001 UNION CITY 7TH ST 35 180 11/10/2000 UNION CITY 7TH STREET 40 50 9/30/1999 X UNION CITY 7TH STREET X 104 5/2/2000 GROUT, SAND UNION CITY 7TH STREET 38.5 65 7/28/1999 CL/SILTS UNION CITY ALVARADO & NILES 40 46 2/24/2000 CL SW UNION CITY SEABREEZE LEGACY 5 34 7/10/2000 SAND/CL UNION CITY SEABREEZE LEGACY 5 60 8/10/2000 CL/SAND UNION CITY TIDEWATER DRIVE 5 30 8/13/1999 CL/GP UNION CITY UNION LANDING 6 40 6/19/2000 SAND/CL UNION CITY USD DEWATER SITE 5 64 22-May CL/SAND UNION CITY X 30 55 3/10/2000 SM SW VACAVILLE ORANGE DRIVE 10 15 5/8/2000 CL,SW VALLEJO 1300 VIRGINIA STREET 12 25 12/13/1999 CL VALLEJO SHELL TENNESSEE STREET 5 8 4/13/2000 X VALLEJO 100 LINCOLN ROAD 50 4/25/2000 CL/WEATHER ROCK VALLEJO 1100 EL CAMINO REAL 12 35 1/25/2001 CL/SM VALLEJO 1600 BROADWAY 10 22 4/27/2000 X VALLEJO 1600 BROADWAY 8 20 7/20/2000 X VALLEJO 1600 MARINE WORLD 12.5 31.5 6/9/2000 CL,SILTS VALLEJO 1700 SONOMA BLVD. 6 25 6/14/1999 CL VALLEJO 1700 TULOMNE RD 8 20 3/27/2000 VALLEJO 1900 BROADWAY STREET 12 20 5/25/2000 X VALLEJO 200 5TH STREET 9 10 4/18/2000 ROCK & CLAY VALLEJO 300 CURTOLA PRKWY. 15 20 6/9/2000 SM CL VALLEJO 300 PENNSYLVANIA AVE X 28.5 8/19/2000 BEDROCK/CLAY VALLEJO 400 CURTOLA PARKWAY 17 25 5/1/2000 BAY MUD VALLEJO 400 LINCOLN RD E 21 36 3/13/2000

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 76 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

VALLEJO 400 LINCOLN RD E X 54 5/26/2000 VALLEJO 400 LINCOLN RD. EAST 21 54 12/16/1999 X VALLEJO 400 LINCOLN ROAD X 25 9/13/2000 FILL+ROCK VALLEJO 400 LINCOLN ROAD 26.5 6/16/2000 WEATHER ROCK/SILTY CL VALLEJO 4300 SONOMA BLVD 15 21 1/12/2000 VALLEJO 800 REDWOOD STREET 5 20 5/23/2000 CL VALLEJO CALAVERA ROAD 28 32 3/10/2001 SM VALLEJO H-74 MARE ISLAND 8 20 1/5/1999 BAYMUD, CL VALLEJO MARE ISLAND 12 20 12/4/2000 GP SW CL VALLEJO MARE ISLAND 10 25 8/3/2000 CL GP BEDROCK VALLEJO MARE ISLAND 20 36 2/26/2001 SAND, BAYMUD VALLEJO MARE ISLAND 15 50 1/19/2000 SAND, GARBAGE VALLEJO MARE ISLAND 9 10 8/14/2000 X VALLEJO MARE ISLAND 15 50 6/8/2000 SAND, BAYMUD VALLEJO MARE ISLAND 22 67 10/6/2000 CL VALLEJO MARE ISLAND 7 15 1/9/1999 VALLEJO MARE ISLAND 0 15 9/15/1999 FILL,CL,BAYMUD VALLEJO MARINERS COVE WAY 16 20 6/8/2000 CL VALLEJO SHELL SITE 10 70 2/5/2001 CL VALLEJO SHELL SITE 10 60 11/6/2000 CL VALLEJO SOLANO AVENUE 19.3 24 2/8/2000 CL SM VALLEJO SR29/SR37 SEWER 9 33 2/14/2001 SAND/CL VALLEJO X 28 40 3/7/2001 SM VERNAILIAS HWY 33 25.5 45 12/4/2000 CL,GP VERNALIAS HWY 33 WELTY ROAD 31 51 9/14/2000 CS,SM,GP VERNALIAS 31000 S. HWY 33 4 20 11/13/2000 X VERNALIAS 35000 S. HYW 33 25.5 72 11/9/2000 GP, CLAY WALNUT CREEK 800 HOLLY HILL DRIVE X 24.5 5/25/1999 CL,SANDSTONE WALNUT CREEK 1100 MT. VIEW BLVD. NONE 15 9/18/2000 CL WALNUT CREEK 1200 ROSSMOOR PARKWAY 17 9 8/24/2000 CL Walnut Creek 1500 block Geary Rd. 38 50 8/13/2007 Walnut Creek 1500 block Newell 14 50 3/7/2008 WALNUT CREEK 1500 MARCH BANKS DRIVE X 50 3/23/1999 SANDSTONE WALNUT CREEK 1500 MT DIABLO BLVD 15 89.6 10/4/2000

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 77 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

WALNUT CREEK 1500 MT. DIABLO BLVD. 15 89 11/16/2000 X WALNUT CREEK 1500 N. CALIFORNIA BLVD. 8.5 16 2/8/2000 WALNUT CREEK 1500 N. CALIFORNIA BLVD. 16 20 10/2/2000 SM CL BEDROCK WALNUT CREEK 1700 LOCUST STREET 10 20 10/5/1999 SAND PACK,PORLAND WALNUT CREEK 1800 BONANZA 17 20 10/11/1999 CL,GP,ROCKS WALNUT CREEK 2000 N. BROADWAY 15 30 4/27/1999 SAND STONE WALNUT CREEK 2400 OLYMPIC 25 55 10/2/2000 CL,SW WALNUT CREEK 2400 SHADELANDS 17 45 5/31/2000 CL/SAND WALNUT CREEK 2400 WARREN ROAD 13 25 4/28/1999 CL,SAND,GP WALNUT CREEK 2700 MITCHELL DRIVE X 5 10/9/2000 CL WALNUT CREEK 2800 MITCHELL DRIVE 5 5 12/15/1999 CL SM WALNUT CREEK 2900 NO. MAIN STREET 10 30 10/31/2000 CL SW WALNUT CREEK 2900 YGNACIO VALLEY ROAD 15 20 4/26/2000 SM CL WALNUT CREEK 3000 OAK ROAD 11 50 8/14/2000 CL/SAND WALNUT CREEK 640 YGNACIO VALLEY ROAD 25 40 8/15/2000 SM/SW WALNUT CREEK FREEMAN BRIDGE X 30 1/12/2000 STIFF CL, ROCK WALNUT CREEK MT. DIABLO BLVD. 15 20 9/25/2000 SW SM CL WALNUT CREEK N. MAIN ST. KAISER 18 33 3/13/2000 CL WALNUT CREEK ROSSMOR COUNTRY CLUB 12 30 11/1/2000 CL SM WALNUT CREEK SO. BROADWAY EXTENSION X 50 12/29/2000 CL SM WALNUT CREEK TICE VALLEY & OLYMPIC 19.3 24 9/19/2000 CL SM WALNUT CREEK TICE VALLEY BLVD. 20 40 10/23/2000 GP SM CL WALNUT CREEK TREAT BLVD. & MAIN STREET 15 20 10/5/2000 CL WALNUT CREEK YGNACIO VALLEY ROAD 21 49.5 12/27/2000 CL WALNUT CREEK YGNACIO VLY RD. & BANCROFT X 30 12/18/2000 GP SW WALNUT GROVE UNOCAL 33 110 3/31/2000 CL WATSONVILLE 1400 FREEDOM BLVD. X 22 9/11/2000 X WATSONVILLE 1400 FREEDOM BLVD. 14 25 4/5/2000 CL WATSONVILLE 400 BEACH ROAD 6 X 1/14/2000 CL P WATSONVILLE PVWMA 6 30 3/24/2000 CL WEED MAIN STREET 8 12 4/14/2000 X West Sacramento 2500 block W. Capitol Ave. 13 75 10/6/2008 WEST SACRAMENTO 800 DELTA LANE 8.5 18 2/21/2001 SAND Westley Hwy 33 39 150 2/6/2007

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 78 NORTHERN CALIFORNIA GROUNDWATER DEPTH CHART TOTAL CITY ADDRESS/LOCATION GWD DATE TYPE DEPTH

WILLIAMS 7TH & EAST STREET 5 15 10/16/2000 WILLITS 900 SOUTH MAIN STREET 20 1/24/2000 CL/SM WILLITS 900 SOUTH MAIN STREET 1 24 1/7/2000 CL/GP/SW/SM WINDSOR 900 SHILOH ROAD 10 35 9/29/2000 EVERYTHING WINDSOR OLD REDWOOD HWY 14.5 35 1/16/2000 CL WINDSOR OLD REDWOOD HWY X 20 1/18/2000 X WINTERS BARBOSA SITE 32 70 4/3/2000 CL/SAND WINTERS PG&E X 30 7/18/2000 CL WOODLAND 1200 EAST GIBSON ROAD 20 60 2/8/1999 CL/SILTS WOODLAND 1200 EAST GIBSON ROAD 24 60 7/25/2000 SM WOODLAND 1200 EAST GIBSON ROAD 25 60 3/20/2000 SM WOODLAND 1700 E BEAMER 16 50 12/14/1999 WOODLAND 1700 E BOOMER 16 25 10/6/2000 WOODLAND 1800 COUNTY ROAD 8 20 6/24/1999 SM WOODLAND 200 COLLEGE ST 22.5 40 11/19/1999 WOODLAND 200 COLLEGE ST 24 40 2/7/2000 WOODLAND 600 COTTONWOOD STREET 55 61.5 4/21/2000 SW SM WOODLAND 600 E STREET X 20 6/9/2000 X WOODLAND CELONI OIL 20 100 4/12/2000 CL WOODLAND COUNTY FAIR 19 100 6/13/2000 CL WOODLAND COUNTY ROAD 8 20 2/3/2000 CL/SILTS YOSEMITE WHITE WOLF 5 15 6/13/2000 X YOSEMITE YOSEMITE PARK 47 60 5/30/2000 CL Yuba City 1200 block Bridge St. 13 70 3/2/2007 YUBA CITY 4400 SAWTELLE ROAD 13 5 4/12/2000 GROUT SEAL,SP YUBA CITY 800 COLUSA AVE 14.5 25 4/27/2000 CL,SW,SM YUBA CITY 800 COLUSA AVENUE 19 25 9/13/2000 Yuba City Franklin Ave. 18 60 3/7/2008 YUBA CITY JOHN TAYLOR FERTILIZER 14 84 3/2/2000 CL/SAND

The depth to groundwater and soil type data contained in these tables are provided by Gregg Drilling & Testing, Inc. as a courtesy to our clients and the general public. PLEASE BE ADVISED THAT THE GROUNDWATER DEPTH AND SOIL TYPE DATA ARE BASED SOLELY ON VISUAL OBSERVATIONS DURING DRILLING AND ARE ONLY APPROXIMATE AT BEST. WE DO NOT GUARANTEE THE ACCURACY OF THESE DATA AND USE OF THIS INFORMATION IS AT USER'S OWN RISK. If you should find significantly different site conditions at a nearby location please e-mail us.

NOTE: An "X' shown in the Groundwater Depth (GWD) column indicates that groundwater was not encountered at the total depth drilled. Page 79