A - Ex A Draft EIR — San Leandro City Council, May 5, 2025 (part 12 of 12)

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
PZ-2 A 6/26/03 11.61 6.74 4.87 -- 1,064 -- 163.5 1.08
PZ-2 A 9/23/03 11.61 7.06 4.55 -- -- -- -- --
PZ-2 A 9/24/03 11.61 -- -- 8.1 1,096 -- 17.6 0.25
PZ-2 A 3/9/04 11.59 6.11 5.48 -- -- -- -- --
PZ-2 A 3/10/04 11.59 -- -- -- 680 -- -171.4 1.00
PZ-2 A 9/29/04 11.59 6.98 4.61 -- 999 -- -- --
PZ-2 A 2/1/05 11.59 -- -- -- 654 -- -- --
PZ-2 A 3/8/05 11.59 5.58 6.01 -- -- -- -- --
PZ-2 A 3/10/05 11.59 -- -- -- 687 -- -106 0.61
PZ-2 A 9/14/05 11.59 6.94 4.65 -- 956 -- -308.3 1.70
PZ-2 A 3/15/06 11.59 5.10 6.49 -- 1,083 -- -108.8 4.79
PZ-2 A 9/20/06 11.59 6.87 4.72 -- 1,020 6.80 -19.5 0.20 PZ-2 A 9/20/06 11.59 6.43 5.16 -- -- -- -- --
PZ-2 A 2/2/07 11.59 6.55 5.04 -- 1,932 10.79 -74.9 2.86 PZ-2 A 8/15/07 11.59 6.89 4.70 -- 1,059 6.74 -30.4 1.28 PZ-2 A 11/14/07 11.59 6.51 5.08 -- -- -- -- --
PZ-2 A 2/5/08 11.59 5.51 6.08 -- 1,085 7.39 109.5 2.54
PZ-2 RDIP A 6/4/08 11.59 6.88 4.71 -- 1,244 -- -- --
PZ-2 RDIP A 11/6/08 11.59 6.52 5.07 -- 6,639 6.51 -72.8 4.51 PZ-2 RDIP A 2/2/09 11.59 6.61 4.98 900 5,404 6.74 -60.6 2.19 PZ-2 RDIP A 5/6/09 11.59 6.40 5.19 -- 3,629 6.66 -24.2 0.28 PZ-2 RDIP A 8/25/09 11.59 6.96 4.63 -- -- -- -- --
PZ-2 RDIP A 11/4/09 11.59 6.43 5.16 -- -- -- -- --
PZ-2 RDIP A 2/1/10 11.59 4.81 6.78 17 738 6.74 -50.7 2.58 PZ-2 RDIP A 8/3/10 11.59 6.60 4.99 -- -- -- -- --
PZ-2 RDIP A 2/9/11 11.59 6.45 5.14 -- 2,241 7.97 -105 0.27 PZ-2 RDIP A 2/7/12 11.59 6.38 5.21 -- 3,310 6.83 -26.9 0.15 PZ-2 O&M A 2/13/13 11.59 6.68 4.91 -- 2,642 6.78 -230.1 1.47 PZ-2 O&M A 2/25/14 11.59 6.69 4.90 -- 1,548 6.72 -88.4 3.12 PZ-2 O&M A 6/11/15 11.59 6.61 4.98 -- 1,912 5.99 -29.4 -- PZ-2 O&M A 2/23/16 11.59 6.51 5.08 -- 1,290 7.69 -126.3 0.91 PZ-2 O&M A 2/14/17 11.59 5.30 6.29 -- 1,078 7.17 64.1 0.13 PZ-2 O&M A 2/14/18 11.59 6.67 4.92 -- 1,180 7.06 -47.7 0.35 PZ-2 O&M A 2/12/19 11.59 5.60 5.99 -- 1,274 7.49 -34.6 0.64 PZ-2 O&M A 3/10/20 11.59 6.73 4.86 -- 1,024 6.92 -12.3 1.66 MW-22 A 3/21/06 12.35 5.37 6.98 -- 896 -- -- --
MW-22 A 3/27/06 12.35 5.20 7.15 -- 986 -- 121.2 1.2
MW-22 A 6/14/06 12.35 6.81 5.54 -- 806 6.41 70.3 0.14
MW-22 A 9/20/06 12.35 7.11 5.24 -- 845 6.85 7.4 0.20
MW-22 A 2/1/07 12.35 6.41 5.94 -- 778 6.78 55.2 0.25
MW-22 A 5/8/07 12.35 6.74 5.61 -- 818 6.68 12.2 1.19
MW-22 A 8/15/07 12.35 7.18 5.17 -- 903 6.57 45.2 0.18
MW-22 A 11/14/07 12.35 6.81 5.54 -- 1,058 7.08 17.2 0.81 MW-22 A 2/5/08 12.35 5.76 6.59 -- 902 6.51 20.7 0.62
MW-22 A 5/6/08 12.35 6.85 5.50 -- -- -- -- --
MW-22 RDIP A 6/7/08 12.35 5.72 6.63 -- -- -- -- --
MW-22 RDIP A 6/7/08 12.35 1.36 10.99 -- 69,632 -- -- -- MW-22 RDIP A 8/6/08 12.35 7.15 5.20 -- 9,509 6.26 -103.4 1.07 MW-22 RDIP A 11/6/08 12.35 6.84 5.51 -- -- -- -- --
MW-22 RDIP A 11/10/08 12.35 -- -- -- 6,320 -- -57.3 4.40 MW-22 RDIP A 2/4/09 12.35 6.86 5.49 3,200 7,030 6.71 -69.8 2.09 MW-22 RDIP A 5/6/09 12.35 6.61 5.74 -- 3,697 6.89 -55.4 0.86 MW-22 RDIP A 8/5/09 12.35 7.34 5.01 -- -- -- -- --
MW-22 RDIP A 11/4/09 12.35 6.91 5.44 -- -- -- -- --
MW-22 RDIP A 2/1/10 12.35 5.78 6.57 13 2,202 6.61 -87.9 2.34 MW-22 RDIP A 5/11/10 12.35 6.42 5.93 -- 2,467 -- -- --
MW-22 RDIP A 2/9/11 12.35 6.85 5.50 -- 2,676 7.78 -96 0.20 MW-22 RDIP A 2/7/12 12.35 6.65 5.70 -- 3,138 6.66 -3.7 0.39 Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
Table 6A
Groundwater Elevation Data, Field Measurements and Other Analyses A-Zone Hotspots
Former Kaiser Aerotech Facilities
San Leandro, California

Page 2 of 3 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-22 O&M A 2/14/13 12.35 6.71 5.64 -- 2,772 6.59 -172.1 2.10 MW-22 O&M A 2/25/14 12.35 6.97 5.38 -- 932 6.47 -61.8 13.75 MW-22 O&M A 6/9/15 12.35 7.27 5.08 -- 2,051 5.96 146.6 -- MW-22 O&M A 2/23/16 12.35 6.50 5.85 -- 971 7.25 -69.1 0.82 MW-22 O&M A 2/14/17 12.35 5.20 7.15 -- 809 7.14 75.2 0.14 MW-22 O&M A 2/14/18 12.35 6.81 5.54 -- 1,057 7.01 -60.2 0.92 MW-22 O&M A 2/12/19 12.35 5.79 6.56 -- 893 5.72 26.8 0.11 MW-22 O&M A 3/10/20 12.35 7.06 5.29 -- 861 6.93 2.6 2.59 MW-23 A 3/21/06 14.46 8.14 6.32 -- 1,468 -- -- --
MW-23 A 3/27/06 14.46 8.10 6.36 -- 1,457 -- 85.2 1.45
MW-23 A 6/14/06 14.46 9.15 5.31 -- 1,341 6.71 -30.2 1.68 MW-23 A 9/20/06 14.46 9.55 4.91 -- 1,257 6.96 163.7 1.35 MW-23 A 1/30/07 14.46 8.99 5.47 -- -- -- -- --
MW-23 A 2/1/07 14.46 -- -- -- 1,122 6.74 82 0.29
MW-23 A 5/8/07 14.46 9.21 5.25 -- 1,194 6.59 111.2 0.72 MW-23 A 8/15/07 14.46 9.45 5.01 -- 1,231 6.62 31.0 0.17 MW-23 A 11/14/07 14.46 9.29 5.17 -- -- -- -- --
MW-23 A 2/5/08 14.46 8.33 6.13 -- 1,216 6.53 -42.2 1.42 MW-23 A 5/6/08 14.46 9.18 5.28 -- -- -- -- --
MW-23 A 6/4/08 14.46 9.36 5.10 -- 1,472 -- -- --
MW-23 A 6/4/08 14.46 6.85 7.61 -- 60,217 -- -- --
MW-23 RDIP A 8/6/08 14.46 9.34 5.12 -- 5,220 6.22 -104.7 0.74 MW-23 RDIP A 11/6/08 14.46 9.60 4.86 -- -- -- -- --
MW-23 RDIP A 11/10/08 14.46 -- -- -- 2,404 -- -73.9 3.79 MW-23 RDIP A 2/3/09 14.46 9.40 5.06 310 3,198 6.56 -57.8 3.60 MW-23 RDIP A 5/6/09 14.46 9.10 5.36 -- 3,009 6.57 -63.2 0.28 MW-23 RDIP A 8/5/09 14.46 9.43 5.03 -- -- -- -- --
MW-23 RDIP A 11/4/09 14.46 9.53 4.93 -- -- -- -- --
MW-23 RDIP A 2/1/10 14.46 8.85 5.61 8.3 1,971 6.47 -57.8 2.72 MW-23 RDIP A 8/3/10 14.46 9.42 5.04 -- -- -- -- --
MW-23 RDIP A 2/8/11 14.46 9.09 5.37 -- 1,466 6.68 -105 0.44 MW-23 RDIP A 2/7/12 14.46 9.08 5.38 -- 2,882 6.78 -1.9 0.33 MW-23 O&M A 2/14/13 14.46 9.57 4.89 -- 1,159 6.49 -161.9 1.23 MW-23 O&M A 2/25/14 14.46 9.35 5.11 -- 1,798 6.71 -92.6 2.70 MW-23 O&M A 6/10/15 14.46 9.55 4.91 -- 1,893 7.27 -120.7 0.10 MW-23 O&M A 2/23/16 14.46 9.03 5.43 -- 1,272 7.49 -95.7 0.85 MW-23 O&M A 2/13/17 14.46 8.00 6.46 -- 951 7.70 50 0.14 MW-23 O&M A 2/14/18 14.46 9.25 5.21 -- 1,066 6.79 -2.6 0.75 MW-23 O&M A 2/11/19 14.46 8.65 5.81 -- 1,394 6.80 -105.5 0.25 MW-23 O&M A 3/10/20 14.46 9.41 5.05 -- 1,094 6.68 52.0 2.19 MW-26 A 3/21/06 10.35 4.40 5.95 -- 1,352 -- -- --
MW-26 A 3/27/06 10.35 4.11 6.24 -- 1,015 -- 108 2.69
MW-26 A 6/14/06 10.35 5.53 4.82 -- 1,023 6.89 -25.0 1.96 MW-26 A 9/21/06 10.35 5.80 4.55 -- 872 7.04 71.1 0.90
MW-26 A 1/31/07 10.35 5.40 4.95 -- 756 6.87 171.3 0.40
MW-26 A 5/9/07 10.35 5.44 4.91 -- 869 6.99 29.4 2.29
MW-26 A 8/14/07 10.35 5.80 4.55 -- 909 7.07 14.3 2.41
MW-26 A 11/13/07 10.35 5.42 4.93 -- -- -- -- --
MW-26 A 2/5/08 10.35 4.30 6.05 -- 975 7.26 19.8 4.02
MW-26 A 5/8/08 10.35 5.81 4.54 -- -- -- -- --
MW-26 RDIP A 6/10/08 10.35 4.21 6.14 -- 825 -- -- --
MW-26 RDIP A 6/10/08 10.35 1.24 9.11 -- 64,789 -- -- -- MW-26 RDIP A 8/5/08 10.35 5.74 4.61 -- 3,770 6.67 -214.3 0.73 MW-26 RDIP A 11/6/08 10.35 5.22 5.13 -- 1,555 -- 58.2 2.39 MW-26 RDIP A 2/3/09 10.35 5.52 4.83 460 4,886 6.69 -122.3 0.57 MW-26 RDIP A 3/18/09 10.35 5.21 5.14 -- 4,889 -- -- --
MW-26 RDIP A 5/6/09 10.35 5.26 5.09 -- 3,140 6.89 -83.9 0.16 MW-26 RDIP A 11/4/09 10.35 5.49 4.86 -- -- -- -- --
Table 6A
Groundwater Elevation Data, Field Measurements and Other Analyses A-Zone Hotspots
Former Kaiser Aerotech Facilities
San Leandro, California

Page 3 of 3 ends

Page 1 of 8 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
MW-11 A 11/14/96 10.90 5.59 5.31 -- -- -- -- --
MW-11 A 3/20/97 10.90 4.93 5.97 -- -- -- -- --
MW-11 A 6/25/97 10.90 5.42 5.48 -- -- -- -- --
MW-11 A 9/22/97 10.90 5.61 5.29 -- -- -- -- --
MW-11 A 12/18/97 10.90 4.00 6.90 -- -- -- -- --
MW-11 A 3/23/98 10.90 4.35 6.55 -- -- -- -- --
MW-11 A 6/17/98 10.90 4.95 5.95 -- -- -- -- --
MW-11 A 9/22/98 10.90 5.71 5.19 -- -- -- -- --
MW-11 A 9/24/98 10.90 -- -- -- -- -- 250 3.05
MW-11 A 12/9/98 10.90 4.78 6.12 -- -- -- 162 6.03
MW-11 A 3/22/99 10.90 4.14 6.76 -- -- -- -- --
MW-11 A 6/21/99 10.90 5.56 5.34 -- -- -- -- --
MW-11 A 9/20/99 10.90 5.90 5.00 -- -- -- -- --
MW-11 A 12/13/99 10.90 5.39 5.51 -- -- -- -- --
MW-11 A 3/13/00 10.90 3.48 7.42 -- -- -- -- --
MW-11 A 9/18/00 10.90 5.68 5.22 -- -- -- -- --
MW-11 A 3/12/01 10.90 4.28 6.62 -- 590 -- -- --
MW-11 A 9/24/01 10.90 5.80 5.10 -- -- -- -- --
MW-11 A 3/26/02 10.90 4.15 6.75 -- -- -- -- --
MW-11 A 10/3/02 10.90 5.75 5.15 -- 722 -- -- --
MW-11 A 3/26/03 10.90 4.91 5.99 -- 659 -- -24.9 0.63
MW-11 A 9/23/03 10.90 5.69 5.21 -- 705 -- -17.5 0.30
MW-11 A 12/16/03 10.90 4.49 6.41 -- -- -- -- --
MW-11 A 3/9/04 10.90 4.41 6.49 -- 601 -- 27.9 1.67
MW-11 A 5/20/04 10.90 5.39 5.51 -- -- -- -- --
MW-11 A 9/29/04 10.90 5.62 5.28 -- 630 -- 51.3 0.43
MW-11 A 12/8/04 10.90 4.34 6.56 -- -- -- -- --
MW-11 A 3/8/05 10.90 3.84 7.06 -- -- -- -- --
MW-11 A 3/9/05 10.90 -- -- -- 611 -- 20.1 0.44
MW-11 A 6/14/05 10.90 4.96 5.94 -- -- -- -- --
MW-11 A 9/14/05 10.90 5.60 5.30 -- 712 -- 76.9 3.82
MW-11 A 12/14/05 10.90 5.20 5.70 -- -- -- -- --
MW-11 A 3/15/06 10.90 3.31 7.59 -- 645 -- -65.6 10.15
MW-11 A 6/13/06 10.90 5.11 5.79 -- -- -- -- --
MW-11 A 9/20/06 10.90 5.55 5.35 -- 723 8.01 -182 1.21
MW-11 A 1/31/07 10.90 5.00 5.90 -- 828 6.68 -98.8 6.99
MW-11 A 2/6/08 10.90 3.72 7.18 -- 503 6.88 -5.7 2.17
MW-11 A 6/2/08 10.90 5.37 5.53 -- 688 -- -- --
MW-11 RDIP A 8/7/08 10.90 5.55 5.35 -- 784 7.07 -69.0 0.38 MW-11 RDIP A 11/6/08 10.90 5.20 5.70 -- -- -- -- --
MW-11 RDIP A 12/2/08 10.90 5.42 5.48 -- 736 -- -133.8 -- MW-11 RDIP A 2/5/09 10.90 5.12 5.78 -- 836 6.70 -39.6 4.60 MW-11 RDIP A 5/6/09 10.90 4.87 6.03 -- 415 6.76 191.0 5.60 MW-11 RDIP A 8/5/09 10.90 5.62 5.28 -- 783 6.60 -186.0 3.02 MW-11 RDIP A 11/4/09 10.90 5.16 5.74 -- -- -- -- --
MW-11 RDIP A 2/2/10 10.90 3.74 7.16 -- 567 6.76 -193.8 0.41 MW-11 RDIP A 5/18/10 10.90 4.94 5.96 -- 602 -- -- --
MW-11 RDIP A 8/3/10 10.90 5.39 5.51 -- -- -- -- --
MW-11 RDIP A 2/8/11 10.90 5.00 5.90 -- 522 6.86 -92 0.17 MW-11 O&M A 2/13/13 10.90 5.21 5.69 -- 518 6.67 -160.3 1.47 MW-11 O&M A 6/9/15 10.90 5.62 5.28 -- 512 6.53 144.3 -- MW-11 O&M A 2/13/17 10.90 3.00 7.90 -- 174 7.78 145.1 0.59 MW-11 O&M A 2/12/19 10.90 3.87 7.03 -- 284 6.53 126.7 2.14 MW-11 O&M A 3/10/20 10.90 5.38 5.52 -- 624 7.47 51.4 2.86 MW-19 A 9/14/05 10.56 5.91 4.65 -- 852 -- -6.3 3.63
MW-19 A 12/14/05 10.56 5.40 5.16 -- 899 -- -48.3 7.75
MW-19 A 3/14/06 10.56 5.61 4.95 -- 1,000 -- 130.9 3.15
MW-19 A 6/13/06 10.56 4.86 5.70 -- -- -- -- --
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
Table 6B
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 1
Former Kaiser Aerotech Facilities
San Leandro, California

Page 2 of 8 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-19 A 9/20/06 10.56 5.19 5.37 -- 811 8.91 -238 0.41
MW-19 A 1/30/07 10.56 5.21 5.35 -- -- -- -- --
MW-19 A 1/31/07 10.56 4.79 5.77 -- 986 7.72 -46.9 5.12
MW-19 A 5/10/07 10.56 5.92 4.64 -- 900 6.93 -14.1 2.19
MW-19 A 8/14/07 10.56 5.31 5.25 -- 1,098 6.93 10.2 1.49 MW-19 A 11/13/07 10.56 5.04 5.52 -- -- -- -- --
MW-19 A 2/5/08 10.56 3.51 7.05 -- 1,225 6.67 -105.3 1.5 MW-19 A 6/11/08 10.56 5.44 5.12 -- 1,098 -- -- --
MW-19 A 6/12/08 10.56 6.11 4.45 -- 1,174 -- -- --
MW-19 RDIP A 8/6/08 10.56 5.28 5.28 -- 1,553 7.07 -319 0.31 MW-19 RDIP A 11/6/08 10.56 6.18 4.38 -- -- -- -- --
MW-19 RDIP A 12/2/08 10.56 5.47 5.09 -- 751 -- -- --
MW-19 RDIP A 2/5/09 10.56 5.02 5.54 79 2,308 6.69 -91.2 1.83 MW-19 RDIP A 5/6/09 10.56 5.86 4.70 -- 1,758 6.48 -68.1 0.19 MW-19 RDIP A 8/6/09 10.56 5.76 4.80 -- 1,877 6.68 -162.4 0.77 MW-19 RDIP A 11/4/09 10.56 5.76 4.80 -- -- -- -- --
MW-19 RDIP A 2/2/10 10.56 3.81 6.75 -- 1,559 6.56 -112.1 0.81 MW-19 RDIP A 2/9/11 10.56 4.73 5.83 -- 1,301 7.05 -81.0 0.28 MW-19 O&M A 2/13/13 10.56 4.94 5.62 -- 1,107 6.50 -26.8 0.44 MW-19 O&M A 6/9/15 10.56 5.29 5.27 -- 2,076 6.19 81.9 -- MW-19 O&M A 2/13/17 10.56 3.50 7.06 -- 843 7.27 16.0 0.11 MW-19 O&M A 2/12/19 10.56 3.65 6.91 -- 2,562 7.37 -57.4 0.42 MW-29 A 9/18/07 10.32 5.17 5.15 5.8 2,507 6.94 63.2 0.87 MW-29 A 11/13/07 10.32 4.80 5.52 -- 1,107 8.59 -63.7 1.64 MW-29 A 2/4/08 10.32 3.20 7.12 -- 1,017 7.28 13.5 2.97
MW-29 A 5/6/08 10.32 4.83 5.49 -- 846 4.91 448.0 0.72
MW-29 RDIP A 8/5/08 10.32 5.07 5.25 -- 919 6.73 104.4 2.02 MW-29 RDIP A 11/6/08 10.32 4.69 5.63 -- -- -- -- --
MW-29 RDIP A 12/2/08 10.32 4.71 5.61 -- 707 -- -10.3 -- MW-29 RDIP A 2/2/09 10.32 4.73 5.59 5.0 870 6.93 48.5 2.07 MW-29 RDIP A 5/6/09 10.32 4.51 5.81 -- 765 6.94 393.6 5.12 MW-29 RDIP A 8/5/09 10.32 5.20 5.12 -- 848 6.76 35.2 2.72 MW-29 RDIP A 11/4/09 10.32 4.64 5.68 -- -- -- -- --
MW-29 RDIP A 2/3/10 10.32 3.91 6.41 -- 900 6.78 78.8 1.05 MW-29 RDIP A 3/26/10 10.32 4.25 6.07 -- 960 -- -- --
MW-29 RDIP A 5/4/10 10.32 4.19 6.13 -- 836 8.06 -235.5 0.36 MW-29 RDIP A 8/3/10 10.32 5.00 5.32 -- -- -- -- --
MW-29 RDIP A 8/4/10 10.32 -- -- 27 897 7.39 -32.7 1.07
MW-29 RDIP A 2/8/11 10.32 4.58 5.74 -- 760 7.03 -72.2 1.91 MW-29 RDIP A 2/7/12 10.32 4.54 5.78 -- 787 6.95 252 0.14 MW-29 RDIP A 8/23/12 10.32 5.27 5.05 30 724 8.33 -2.5 1.09 MW-29 O&M A 2/14/13 10.32 4.80 5.52 -- 815 7.12 128.5 0.69 MW-29 O&M A 2/25/14 10.32 4.87 5.45 -- 647 6.98 173.7 2.20 MW-29 O&M A 6/10/15 10.32 5.10 5.22 -- 763 7.49 -11.7 0.45 MW-29 O&M A 2/24/16 10.32 4.64 5.68 5.1 670 8.14 10.5 1.31 MW-29 O&M A 2/15/17 10.32 3.10 7.22 3.3 546 7.70 63.5 0.48 MW-29 O&M A 2/14/18 10.32 4.68 5.64 -- 543 6.96 27.4 0.76 MW-29 O&M A 9/12/18 10.32 5.11 5.21 -- 612 7.95 -9.5 -- MW-29 O&M A 2/13/19 10.32 3.38 6.94 -- 11,287 7.06 -25.9 0.52 MW-29 O&M A 3/10/20 10.32 5.05 5.27 -- 3,054 6.69 -28.3 1.60 UB-2 UB 3/27/06 10.97 3.20 7.77 9.1 1,082 -- -2.5 1.94
UB-2 UB 4/3/06 10.97 2.92 8.05 -- 968 -- 43 0.50
UB-2 PT ERD UB 5/8/06 10.97 5.12 5.85 -- -- -- -- --
UB-2 PT ERD UB 9/20/06 10.97 5.61 5.36 -- -- -- -- --
UB-2 PT ERD UB 1/31/07 10.97 5.07 5.90 -- 882 10.65 -160.4 4.20 UB-2 PT ERD UB 5/10/07 10.97 5.10 5.87 2.1 663 7.24 -118.5 1.30 UB-2 PT ERD UB 2/6/08 11.15 4.54 6.61 -- 686 7.23 -15.9 0.39 UB-2 PT ERD UB 6/2/08 11.15 5.38 5.77 -- 596 -- -- --
Table 6B
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 1
Former Kaiser Aerotech Facilities
San Leandro, California

Page 3 of 8 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
UB-2 RDIP UB 6/3/08 11.15 6.25 4.90 -- 44,100 -- -- --
UB-2 RDIP UB 6/3/08 11.15 -- -- -- 46,972 -- -- --
UB-2 RDIP UB 6/11/08 11.15 7.02 4.13 -- 27,136 -- -- -- UB-2 RDIP UB 6/12/08 11.15 7.02 4.13 -- 26,435 -- -- -- UB-2 RDIP UB 11/6/08 11.15 -- -- -- 17,232 -- -132.9 3.05 UB-2 RDIP UB 2/5/09 11.15 6.29 4.86 -- 17,432 6.60 -100.6 1.90 UB-2 RDIP UB 2/1/10 11.15 4.69 6.46 85 3,811 6.72 -95.4 1.57 UB-2 RDIP UB 2/8/11 11.15 5.17 5.98 -- 4,254 7.05 -75.8 0.49 UB-2 RDIP UB 8/10/11 11.15 5.45 5.70 -- 4,019 6.81 -119.7 -- UB-2 RDIP UB 2/7/12 11.15 5.20 5.95 -- 3,525 6.87 -94.8 0.26 UB-2 O&M UB 2/13/13 11.15 5.17 5.98 -- 3,633 7.44 -66.7 1.03 UB-2 O&M UB 9/17/14 11.15 5.84 5.31 -- 2,862 7.34 -100.9 0.74 UB-2 O&M UB 6/9/15 11.15 5.77 5.38 -- 1,666 6.66 42.2 -- UB-2 O&M UB 2/23/16 11.15 4.94 6.21 -- 2,649 6.53 -50.9 4.66 UB-2 O&M UB 9/22/16 11.15 5.90 5.25 -- 2,398 7.14 -26.2 0.59 UB-2 O&M UB 2/13/17 11.15 3.05 8.10 -- 610 7.91 76.4 0.18 UB-2 O&M UB 9/20/17 11.15 5.77 5.38 1.5 1,155 6.68 -60.7 0.50 UB-2 O&M UB 2/13/18 11.15 5.17 5.98 -- 1,790 6.98 -45.4 1.63 UB-2 O&M UB 9/26/18
UB-2 O&M UB 2/12/19 11.15 3.96 7.19 -- 1,759 6.56 -52.4 0.09 UB-2 O&M UB 9/24/19
UB-2 O&M UB 3/10/20 11.15 5.51 5.64 -- 1,569 7.07 -20.0 1.13 LPZ-2 UB 8/12/03 10.60 5.31 5.29 -- 858 -- -38.1 3.41
LPZ-2 UB 9/29/04 10.60 6.41 4.19 -- 563 -- -460 0.84
LPZ-2 UB 12/8/04 10.60 4.54 6.06 -- 449 -- -28.4 1.01
LPZ-2 UB 3/8/05 10.60 3.58 7.02 -- -- -- -- --
LPZ-2 UB 3/9/05 10.60 -- -- -- 730 -- 9.0 0.42
LPZ-2 UB 6/14/05 10.60 4.41 6.19 -- 716 -- -112.6 0.15
LPZ-2 UB 9/14/05 10.60 5.35 5.25 -- 768 -- -203.6 1.04
LPZ-2 UB 12/15/05 10.60 4.95 5.65 -- 483 -- -105.6 3.95 LPZ-2 UB 3/14/06 10.60 3.10 7.50 -- 633 -- 142.4 1.45
LPZ-2 UB 4/3/06 10.60 3.17 7.43 -- 767 -- 57.0 0.1
LPZ-2 UB 4/5/06 10.60 1.91 8.69 -- 1150 -- 75.0 0.3
LPZ-2 PT ERD UB 5/8/06 10.60 4.37 6.23 540 2,199 7.39 -196.6 4.37 LPZ-2 PT ERD UB 6/13/06 10.60 4.84 5.76 860 2,812 6.42 -72.4 1.21 LPZ-2 PT ERD UB 7/12/06 10.60 5.05 5.55 1,100 3,010 6.28 -127.7 0.12 LPZ-2 PT ERD UB 8/9/06 10.60 5.13 5.47 980 3,391 6.52 -136.9 2.39 LPZ-2 PT ERD UB 9/20/06 10.60 5.20 5.40 1,000 3,373 6.59 -131.8 0.45 LPZ-2 PT ERD UB 10/24/06 10.60 5.26 5.34 1,400 2,798 6.78 -89.5 0.24 LPZ-2 PT ERD UB 1/31/07 10.60 4.77 5.83 530 2,810 6.94 -74.4 6.82 LPZ-2 PT ERD UB 5/10/07 10.60 5.15 5.45 1,000 2,667 6.63 -45.3 1.27 LPZ-2 PT ERD UB 8/14/07 10.60 5.25 5.35 600 2,384 6.37 -110.8 0.25 LPZ-2 PT ERD UB 11/13/07 10.60 4.92 5.68 380 1,662 6.53 -102 0.36 LPZ-2 PT ERD UB 2/6/08 10.60 3.72 6.88 250 1,879 6.64 -135.9 0.59 LPZ-2 PT ERD UB 6/2/08 10.60 5.35 5.25 -- 1,635 -- -- -- LPZ-2 PT ERD UB 6/4/08 10.60 4.59 6.01 -- 1,902 -- -- -- LPZ-2 RDIP UB 8/6/08 10.60 5.32 5.28 -- 4,941 6.53 -311 0.20 LPZ-2 RDIP UB 11/6/08 10.60 -- -- -- 2,357 -- -93.3 2.86 LPZ-2 RDIP UB 2/4/09 10.60 5.10 5.50 640 3,204 6.72 -118.5 1.24 LPZ-2 RDIP UB 8/5/09 10.60 5.48 5.12 -- 3,097 6.67 -172.6 1.42 LPZ-2 RDIP UB 2/2/10 10.60 3.59 7.01 60 2,439 6.45 -90.4 1.26 LPZ-2 RDIP UB 5/17/10 10.60 5.14 5.46 -- 3,128 -- -- -- LPZ-2 RDIP UB 5/18/10 10.60 4.53 6.07 -- 8,125 -- -- -- LPZ-2 RDIP UB 8/3/10 10.60 5.20 5.40 -- -- -- -- --
LPZ-2 RDIP UB 8/4/10 10.60 -- -- -- 5,236 7.28 -163.2 0.60 LPZ-2 RDIP UB 2/8/11 10.60 5.10 5.50 -- 4,154 6.90 -129.5 0.14 LPZ-2 RDIP UB 8/10/11 10.60 5.10 5.50 -- 3,351 6.64 -112.6 -- LPZ-2 RDIP UB 2/7/12 10.60 5.04 5.56 -- 2,972 6.55 -93.8 0.74 LPZ-2 RDIP UB 8/23/12 10.60 5.42 5.18 -- 2,704 6.39 -33.7 0.60 Well is parked over; unable to access
Well is parked over; unable to access
Table 6B
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 1
Former Kaiser Aerotech Facilities
San Leandro, California

Page 4 of 8 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
LPZ-2 O&M UB 2/13/13 10.60 4.95 5.65 150 2,402 7.41 -41.1 0.66 LPZ-2 O&M UB 9/24/13 10.60 6.65 3.95 -- 7,135 6.22 -75.7 1.02 LPZ-2 O&M UB 2/25/14 10.60 5.02 5.58 2,100 2,711 6.72 -150.9 1.15 LPZ-2 O&M UB 9/17/14 10.60 5.72 4.88 -- 3,261 6.73 -131.8 2.99 LPZ-2 O&M UB 6/9/15 10.60 5.65 4.95 -- 3,153 7.45 -151.5 0.92 LPZ-2 O&M UB 2/23/16 10.60 5.24 5.36 3.2 2,467 6.25 -29.1 11.31 LPZ-2 O&M UB 9/22/16 10.60 5.50 5.10 -- 2,331 6.20 -93.1 1.65 LPZ-2 O&M UB 2/13/17 10.60 2.90 7.70 -- 1,618 6.78 -111.6 1.34 LPZ-2 O&M UB 9/20/17 10.60 5.39 5.21 -- 2,081 6.52 -97.5 0.43 LPZ-2 O&M UB 2/13/18 10.60 4.77 5.83 -- 1,677 6.75 -70.1 0.44 LPZ-2 O&M UB 9/11/18 10.60 5.40 5.20 -- -- -- -- --
LPZ-2 O&M UB 9/26/18 10.60 5.48 5.12 -- 6,968 6.53 -69.7 3.41 LPZ-2 O&M UB 2/12/19 10.60 3.78 6.82 -- 5,828 7.42 -142.1 0.30 LPZ-2 O&M UB 9/24/19 10.60 5.90 4.70 -- 3,588 6.58 -76.5 0.38 LPZ-2 O&M UB 3/10/20 10.60 5.23 5.37 3.17 3,169 6.86 -78.4 2.20 LPZ-3 B 8/12/03 10.65 5.23 5.42 -- 802 -- -35.7 0.35
LPZ-3 B 3/10/05 10.65 3.60 7.05 -- -- -- -- --
LPZ-3 B 3/9/05 10.65 -- -- -- 498 -- 3.6 0.04
LPZ-3 B 9/14/05 10.65 5.30 5.35 -- 392 -- -181.0 1.25
LPZ-3 B 12/15/05 10.65 4.96 5.69 -- 384 -- -101.2 2.05
LPZ-3 B 4/3/06 10.65 2.84 7.81 -- 12,600 -- 34.5 0.1
LPZ-3 B 4/4/06 10.65 2.71 7.94 -- 8,535 -- -290.0 0.5
LPZ-3 B 4/5/06 10.65 2.36 8.29 -- 32,350 -- 75.0 0.9
LPZ-3 PT ERD B 5/8/06 10.65 4.63 6.02 14,000 16,572 7.13 -385.2 1.69 LPZ-3 PT ERD B 6/13/06 10.65 5.13 5.52 13,000 14,450 6.05 -91.7 0.49 LPZ-3 PT ERD B 7/12/06 10.65 5.38 5.27 12,000 12,132 6.01 -91 0.03 LPZ-3 PT ERD B 8/9/06 10.65 5.48 5.17 8,500 12,525 6.37 -160.9 1.87 LPZ-3 PT ERD B 9/20/06 10.65 5.55 5.10 7,000 10,079 6.31 -83.4 0.46 LPZ-3 PT ERD B 10/24/06 10.65 5.38 5.27 6,000 9,400 6.51 -49.7 0.23 LPZ-3 PT ERD B 1/30/07 10.65 4.86 5.79 7,400 8,384 6.02 -14.6 2.19 LPZ-3 PT ERD B 2/6/08 10.65 3.92 6.73 -- 9,098 6.04 -122.4 0.29 LPZ-3 PT ERD B 6/2/08 10.65 5.31 5.34 -- 6,209 -- -- -- LPZ-3 PT ERD B 6/4/08 10.65 5.19 5.46 -- 7,190 -- -- -- LPZ-3 RDIP B 6/11/08 10.60 6.18 4.42 -- 10,966 -- -- -- LPZ-3 RDIP B 2/4/09 10.65 6.82 3.83 -- 16,279 6.38 -139.0 2.43 LPZ-3 RDIP B 2/2/10 10.65 3.97 6.68 -- 12,766 6.14 -96.1 0.42 LPZ-3 RDIP B 5/17/10 10.65 5.19 5.46 -- 11,724 -- -- -- LPZ-3 RDIP B 5/18/10 10.65 3.26 7.39 -- 46,208 -- -- -- LPZ-3 RDIP B 8/3/10 10.65 5.64 5.01 -- -- -- -- --
LPZ-3 RDIP B 8/4/10 10.65 -- -- -- 20,082 6.94 -156.7 0.59 LPZ-3 RDIP B 2/8/11 10.65 5.07 5.58 -- 20,565 6.74 -181.0 1.29 LPZ-3 RDIP B 8/10/11 10.65 5.25 5.40 -- 13,267 6.83 -192.3 -- LPZ-3 RDIP B 2/7/12 10.65 4.95 5.70 -- 12,495 6.85 -112.5 0.36 LPZ-3 RDIP B 8/23/12 10.65 5.54 5.11 -- 9,732 8.30 -80.7 1.98 LPZ-3 O&M B 2/13/13 10.65 5.15 5.50 180 8,839 7.83 -131.4 0.60 LPZ-3 O&M B 7/29/13 10.65 -- -- -- 9,855 6.05 -3.4 0.89 LPZ-3 O&M B 7/30/13 10.65 -- -- -- 119 8.90 259.2 5.87
LPZ-3 O&M B 9/24/13 10.65 5.64 5.01 -- 12,689 6.30 -81.3 0.92 LPZ-3 O&M B 2/25/14 10.65 5.30 5.35 -- 11,448 7.24 -110.2 1.07 LPZ-3 O&M B 9/17/14 10.65 5.75 4.90 -- 10,918 7.34 -135.9 1.55 LPZ-3 O&M B 6/9/15 10.65 5.50 5.15 -- 10,573 7.07 -112.5 2.09 LPZ-3 O&M B 2/23/16 10.65 4.82 5.83 -- 8,905 6.80 44.3 10.11 LPZ-3 O&M B 9/22/16 10.65 5.69 4.96 -- 8,876 7.56 -64.7 0.80 LPZ-3 O&M B 2/13/17 10.65 2.78 7.87 -- 2,578 7.98 -127.3 0.97 LPZ-3 O&M B 9/20/17 10.65 5.50 5.15 -- 6,400 6.98 -100.3 0.95 LPZ-3 O&M B 2/13/18 10.65 5.00 5.65 -- 4,440 6.95 -89.2 0.44 LPZ-3 O&M B 9/11/18 10.65 5.45 5.20 -- 3,958 7.49 -89.1 -- LPZ-3 O&M B 9/26/18 10.65 5.87 4.78 -- 13,863 6.83 -179 5.68 LPZ-3 O&M B 2/12/19 10.65 4.10 6.55 -- 15,872 7.02 -153.1 0.16 Table 6B
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 1
Former Kaiser Aerotech Facilities
San Leandro, California

Page 5 of 8 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
LPZ-3 O&M B 9/24/19 10.65 5.69 4.96 -- 12,630 7.30 -121.8 0.22 LPZ-3 O&M B 3/10/20 10.65 5.41 5.24 -- 10,603 7.36 -84.7 2.20 LPZ-5 LB 8/12/03 10.57 5.18 5.39 -- 658 -- -42.2 0.28
LPZ-5 LB 9/23/03 10.57 5.35 5.22 -- -- -- -- --
LPZ-5 LB 12/16/03 10.57 4.21 6.36 -- 502 -- 158.4 0.07
LPZ-5 LB 3/9/04 10.57 4.14 6.43 -- 411 -- 27 0.36
LPZ-5 LB 5/20/04 10.57 5.00 5.57 -- 388 -- -67.5 0.07
LPZ-5 LB 3/8/05 10.57 3.55 7.02 -- -- -- -- --
LPZ-5 LB 3/9/05 10.57 -- -- -- 582 -- 4.6 0.12
LPZ-5 LB 9/14/05 10.57 5.30 5.27 -- 585 -- -200.2 1.37
LPZ-5 LB 12/15/05 10.57 4.92 5.65 -- 492 -- -113.4 0.63 LPZ-5 PT ERD LB 5/8/06 10.57 4.35 6.22 3,900 6,208 7.01 -229.9 2.34 LPZ-5 PT ERD LB 6/13/06 10.57 4.83 5.74 10,000 9,331 5.90 -51.7 0.72 LPZ-5 PT ERD LB 7/12/06 10.57 5.18 5.39 4,700 3,922 5.88 -106.5 0.05 LPZ-5 PT ERD LB 8/9/06 10.57 5.20 5.37 5,000 8,134 6.25 -115.9 1.86 LPZ-5 PT ERD LB 9/20/06 10.57 5.25 5.32 5,000 7,997 6.24 -100.6 0.55 LPZ-5 PT ERD LB 10/24/06 10.57 5.62 4.95 4,500 7,040 6.42 -38.1 0.26 LPZ-5 PT ERD LB 1/30/07 10.57 4.60 5.97 4,100 6,759 6.01 -47.9 0.37 LPZ-5 PT ERD LB 8/14/07 10.57 5.20 5.37 3,700 7,307 6.00 -43.9 0.17 LPZ-5 PT ERD LB 11/13/07 10.57 5.06 5.51 98 6,218 5.53 -33.6 0.41 LPZ-5 PT ERD LB 2/6/08 10.57 3.77 6.80 2,200 6,111 6.06 -74.1 0.34 LPZ-5 PT ERD LB 6/11/08 10.57 6.08 4.49 -- 2,834 -- -- -- LPZ-5 PT ERD LB 6/12/08 10.57 1.30 9.27 -- 4,063 -- -- -- LPZ-5 RDIP LB 8/6/08 10.57 5.40 5.17 -- 10,854 6.38 -310 0.25 LPZ-5 RDIP LB 11/6/08 10.57 -- -- -- 819 -- -126.8 2.13 LPZ-5 RDIP LB 12/2/08 10.57 5.33 5.24 -- 211 -- -206 -- LPZ-5 RDIP LB 2/4/09 10.57 5.50 5.07 6,000 10,307 6.22 -116.9 2.53 LPZ-5 RDIP LB 8/5/09 10.57 5.51 5.06 -- 10,309 6.18 -171.6 1.60 LPZ-5 RDIP LB 2/2/10 10.57 4.00 6.57 4,700 10,122 6.07 -67.3 0.93 LPZ-5 RDIP LB 5/17/10 10.57 4.86 5.71 -- 6,542 -- -- -- LPZ-5 RDIP LB 8/3/10 10.57 5.20 5.37 -- -- -- -- --
LPZ-5 RDIP LB 8/4/10 10.57 -- -- -- 6,006 7.33 -150.8 2.14 LPZ-5 RDIP LB 2/8/11 10.57 4.91 5.66 -- 12,201 6.56 -112.5 0.31 LPZ-5 RDIP LB 8/10/11 10.57 4.95 5.62 -- 4,856 6.84 -144.7 0.31 LPZ-5 RDIP LB 2/7/12 10.57 5.02 5.55 170 4,832 6.67 -96.9 0.96 LPZ-5 RDIP LB 8/23/12 10.57 5.43 5.14 -- 4,493 7.40 -81.3 1.78 LPZ-5 O&M LB 2/13/13 10.57 5.16 5.41 260 4,400 7.72 -118.3 0.44 LPZ-5 O&M LB 9/24/13 10.57 5.72 4.85 -- 7,241 6.37 -87.8 0.97 LPZ-5 O&M LB 2/25/14 10.57 5.14 5.43 -- 4,106 6.47 -64.3 1.57 LPZ-5 O&M LB 9/17/14 10.57 5.64 4.93 -- 5,241 6.88 -114.6 0.97 LPZ-5 O&M LB 6/9/15 10.57 5.25 5.32 91.6 290 7.61 -122.9 0.77 LPZ-5 O&M LB 2/23/16 10.57 4.95 5.62 60 3,296 6.43 -49.8 11.17 LPZ-5 O&M LB 9/22/16 10.57 5.47 5.10 -- 4,264 7.33 -44.2 1.05 LPZ-5 O&M LB 2/13/17 10.57 3.00 7.57 46.2 4,471 7.02 -134.0 0.29 LPZ-5 O&M LB 9/20/17 10.57 5.40 5.17 -- 4,537 6.67 -111.5 0.30 LPZ-5 O&M LB 2/13/18 10.57 4.82 5.75 -- 4,376 6.83 -113.2 0.65 LPZ-5 O&M LB 9/11/18 10.57 5.09 5.48 -- -- -- -- --
LPZ-5 O&M LB 9/26/18 10.57 5.64 4.93 -- 5,779 6.82 -116.3 3.27 LPZ-5 O&M LB 2/12/19 10.57 3.70 6.87 1,260 1,957 6.40 -83.6 0.14 LPZ-5 O&M LB 9/24/19 10.57 5.38 5.19 -- 5,780 6.90 -112.0 0.24 LPZ-5 O&M LB 3/10/20 10.57 5.41 5.16 1,500 6,310 6.87 -115.4 0.86 UB-3 UB 9/18/07 10.51 5.91 4.60 6.3 847.8 6.88 172.6 0.61 UB-3 UB 11/13/07 10.51 5.12 5.39 -- 740 7.36 26.8 0.47
UB-3 UB 2/4/08 10.51 3.36 7.15 -- 856 7.49 66.5 2.74
UB-3 UB 5/7/08 10.51 4.69 5.82 -- 747 6.27 373.8 1.91
UB-3 UB 6/4/08 10.51 5.31 5.20 -- 695 -- -- --
UB-3 UB 6/4/08 10.51 5.02 5.49 -- 800 -- -- --
UB-3 UB 8/5/08 10.51 5.41 5.10 -- 757 7.27 130.6 3.37
Table 6B
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 1
Former Kaiser Aerotech Facilities
San Leandro, California

Page 6 of 8 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
UB-3 UB 11/6/08 10.51 4.95 5.56 -- 673 -- -50.8 2.57
UB-3 UB 12/2/08 10.51 4.85 5.66 -- 621 -- -91.3 --
UB-3 UB 2/2/09 10.51 4.88 5.63 3.5 677 7.54 24.2 1.55
UB-3 UB 5/6/09 10.51 4.61 5.90 -- 622 7.60 117.2 3.28
UB-3 RDIP UB 8/4/09 10.51 5.33 5.18 1.9 731 7.50 -85.1 1.40 UB-3 RDIP UB 10/20/09 10.51 5.52 4.99 -- 653 -- -- --
UB-3 RDIP UB 10/21/09 10.51 4.40 6.11 -- 695 -- -- --
UB-3 RDIP UB 11/4/09 10.51 4.94 5.57 -- 775 13.00 -273.7 0.30 UB-3 RDIP UB 2/3/10 10.51 3.83 6.68 2.8 876 7.31 32.1 0.28 UB-3 RDIP UB 3/26/10 10.51 4.38 6.13 -- 852 -- -- --
UB-3 RDIP UB 3/30/10 10.51 4.15 6.36 -- 1,040 -- -- --
UB-3 RDIP UB 5/4/10 10.51 4.15 6.36 -- 1,030 8.53 -324.1 0.37 UB-3 RDIP UB 8/3/10 10.51 5.11 5.40 -- -- -- -- --
UB-3 RDIP UB 8/4/10 10.51 -- -- 51 1,037 7.04 -170.9 0.36 UB-3 RDIP UB 2/9/11 10.51 4.73 5.78 -- 867 7.49 -27.5 0.37 UB-3 RDIP UB 8/10/11 10.51 5.00 5.51 1.4 858 7.91 -49.2 -- UB-3 RDIP UB 10/18/11 10.51 5.00 5.51 -- 894 7.01 -12.3 2.12 UB-3 RDIP UB 10/21/11 10.51 -- -- -- 25,802 6.75 -56.9 3.37 UB-3 RDIP UB 2/7/12 10.51 5.00 5.51 -- 1,473 6.08 -69.8 0.62 UB-3 RDIP UB 8/23/12 10.51 5.45 5.06 -- 8,345 8.32 -53.7 2.33 UB-3 O&M UB 2/14/13 10.51 5.03 5.48 250 6,489 7.88 -13.1 0.46 UB-3 O&M UB 7/30/13 10.51 -- -- -- 5,482 7.83 -21.6 2.24 UB-3 O&M UB 7/31/13 10.51 -- -- -- 2,493 8.24 -18.7 5.43 UB-3 O&M UB 9/24/13 10.51 5.54 4.97 -- 11,694 6.49 -58.6 1.01 UB-3 O&M UB 2/26/14 10.51 5.18 5.33 930 6,460 7.28 -95.5 2.62 UB-3 O&M UB 9/17/14 10.51 5.75 4.76 -- 5,860 7.23 -132.4 0.50 UB-3 O&M UB 6/10/15 10.51 5.43 5.08 -- 4,950 6.80 -104.3 1.16 UB-3 O&M UB 2/24/16 10.51 4.68 5.83 -- 3,671 7.65 -89.9 0.89 UB-3 O&M UB 9/22/16 10.51 5.59 4.92 -- 3,273 7.55 -63.4 0.83 UB-3 O&M UB 2/15/17 10.51 3.80 6.71 -- 2,622 7.64 -10.0 0.85 UB-3 O&M UB 9/20/17 10.51 5.50 5.01 2.4 2,203 6.81 -107.3 0.97 UB-3 O&M UB 2/14/18 10.51 5.31 5.20 -- 2,398 7.20 -104.6 0.41 UB-3 O&M UB 9/12/18 10.51 5.48 5.03 -- -- -- -- --
UB-3 O&M UB 9/26/18 10.51 5.53 4.98 -- 1,304 7.29 -69.4 2.46 UB-3 O&M UB 2/13/19 10.51 3.50 7.01 -- 2,510 6.64 -74.3 0.21 UB-3 O&M UB 9/24/19 10.51 5.42 5.09 -- 1,826 6.42 -37.6 0.47 UB-3 O&M UB 3/10/20 10.51 5.27 5.24 -- 2,062 7.08 34.0 2.00 LB-3 LB 9/18/07 10.49 5.35 5.14 2.9 620.1 6.84 222 1.45 LB-3 LB 11/13/07 10.49 4.92 5.57 -- 755 7.63 22.3 0.24
LB-3 LB 2/4/08 10.49 3.49 7.00 -- 739 7.55 69.3 3.18
LB-3 LB 5/6/08 10.49 6.50 3.99 -- 720 6.68 -- --
LB-3 LB 6/4/08 10.49 5.54 4.95 -- 545 -- -- --
LB-3 LB 6/4/08 10.49 4.41 6.08 -- 945 -- -- --
LB-3 LB 8/5/08 10.49 5.04 5.45 -- 723 7.09 78.1 3.05
LB-3 LB 11/6/08 10.49 5.90 4.59 -- 619 -- -47.8 2.45
LB-3 LB 12/2/08 10.49 5.91 4.58 -- 630 -- -61.9 --
LB-3 LB 2/2/09 10.49 5.15 5.34 4.6 647 7.49 44.5 2.79
LB-3 LB 5/6/09 10.49 4.50 5.99 -- 556 7.49 141.6 5.46
LB-3 RDIP LB 8/4/09 10.49 5.37 5.12 1.5 693 7.36 -39.8 0.77 LB-3 RDIP LB 10/20/09 10.49 4.36 6.13 -- 615 -- -- --
LB-3 RDIP LB 10/21/09 10.49 3.34 7.15 -- 635 -- -- --
LB-3 RDIP LB 11/4/09 10.49 5.90 4.59 -- 534 6.96 -16.4 0.12 LB-3 RDIP LB 2/3/10 10.49 3.73 6.76 2.9 665 7.34 68.1 3.27 LB-3 RDIP LB 3/30/10 10.49 2.79 7.70 -- 704 -- -- --
LB-3 RDIP LB 5/4/10 10.49 4.19 6.30 -- 1,180 8.73 -313.7 0.33 LB-3 RDIP LB 8/3/10 10.49 4.96 5.53 -- -- -- -- --
LB-3 RDIP LB 8/4/10 10.49 -- -- 1,400 1,416 7.68 -147.8 0.63 LB-3 RDIP LB 2/9/11 10.49 4.79 5.70 -- 1,119 7.41 -32.7 0.23 LB-3 RDIP LB 8/10/11 10.49 4.80 5.69 1.3 1,001 7.27 -77.1 -- Table 6B
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 1
Former Kaiser Aerotech Facilities
San Leandro, California

Page 7 of 8 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
LB-3 RDIP LB 10/18/11 10.49 5.20 5.29 -- 1,093 6.69 -46.1 1.51 LB-3 RDIP LB 10/21/11 10.49 -- -- -- 58,790 6.99 25.2 5.61 LB-3 RDIP LB 2/7/12 10.49 5.24 5.25 -- 21,782 6.34 -137.8 0.79 LB-3 RDIP LB 8/23/12 10.49 5.40 5.09 -- 9,675 7.38 -53.4 1.21 LB-3 O&M LB 2/14/13 10.49 5.01 5.48 5,400 10,794 7.92 -12.3 0.48 LB-3 O&M LB 7/31/13 10.49 -- -- -- 13,874 7.02 -34.2 2.09 LB-3 O&M LB 7/31/13 10.49 -- -- -- 84 9.34 91.5 6.93
LB-3 O&M LB 9/24/13 10.49 5.52 4.97 -- 8,597 6.33 -65.5 0.83 LB-3 O&M LB 2/26/14 10.49 5.12 5.37 1,200 6,198 6.83 -120.7 2.50 LB-3 O&M LB 9/17/14 10.49 5.69 4.80 -- 5,081 7.25 -160.1 0.59 LB-3 O&M LB 6/10/15 10.49 5.35 5.14 -- 4,238 6.83 -102.4 1.74 LB-3 O&M LB 2/24/16 10.49 4.60 5.89 -- 3,451 7.97 -99.3 0.90 LB-3 O&M LB 9/22/16 10.49 5.49 5.00 -- 4,141 7.52 -67.3 0.60 LB-3 O&M LB 2/15/17 10.49 3.50 6.99 -- 2,055 7.69 -9.2 0.68 LB-3 O&M LB 9/20/17 10.49 5.30 5.19 -- 2,436 6.97 -126.8 0.63 LB-3 O&M LB 2/14/18 10.49 5.27 5.22 -- 2,471 7.20 -110.1 1.10 LB-3 O&M LB 9/12/18 10.49 5.30 5.19 -- -- -- -- --
LB-3 O&M LB 9/26/18 10.49 5.37 5.12 -- 2,228 7.22 -116.4 1.97 LB-3 O&M LB 2/13/19 10.49 3.48 7.01 -- 2,408 6.57 -42.1 0.27 LB-3 O&M LB 9/24/19 10.49 5.25 5.24 -- 1,810 6.26 -28.6 0.51 LB-3 O&M LB 3/10/20 10.49 5.00 5.49 -- 1,725 7.61 81.7 1.78 LB-3 O&M LB 3/11/20 10.49 -- -- 1.46 B 1,737 7.90 43.6 0.53 UB-4 UB 9/18/07 10.18 5.41 4.77 4.0 929 7.57 78 0.59
UB-4 UB 11/13/07 10.18 4.95 5.23 -- 741 7.11 -6.5 0.40
UB-4 UB 2/4/08 10.18 3.28 6.90 -- 917 7.41 79.2 0.51
UB-4 UB 5/6/08 10.18 4.87 5.31 -- 790 5.48 -- --
UB-4 UB 2/2/09 10.18 4.74 5.44 -- 702 7.37 58.2 0.66
UB-4 UB 2/4/10 10.18 3.75 6.43 -- 868 7.17 162.9 0.44
UB-4 UB 3/22/10 10.18 4.27 5.91 -- 1,086 -- -- --
UB-4 UB 4/2/10 10.18 3.03 7.15 -- 822 -- -- --
UB-4 UB 5/4/10 10.18 4.88 5.30 -- 827 8.16 -273.2 0.52
UB-4 UB 5/10/10 10.18 4.14 6.04 -- 905 -- -- --
UB-4 UB 8/3/10 10.18 5.03 5.15 -- -- -- -- --
UB-4 RDIP UB 8/4/10 10.18 -- -- 480 2,608 7.36 -195.1 0.78 UB-4 RDIP UB 2/9/11 10.18 4.74 5.44 -- 2,208 7.56 -115.7 0.97 UB-4 RDIP UB 8/10/11 10.18 4.94 5.24 -- 2,403 6.79 -114.7 -- UB-4 RDIP UB 10/18/11 10.18 5.41 4.77 -- 2,408 6.28 -184.5 0.50 UB-4 RDIP UB 10/21/11 10.18 5.53 4.65 -- 39,481 8.15 -195.4 1.23 UB-4 RDIP UB 2/7/12 10.18 4.91 5.27 -- 7,501 6.14 -88.1 0.79 UB-4 RDIP UB 8/23/12 10.18 5.35 4.83 -- 3,887 8.43 -106.4 1.88 UB-4 O&M UB 2/13/13 10.18 4.93 5.25 680 3,489 7.78 -85.9 0.61 UB-4 O&M UB 7/31/13 10.18 -- -- -- 4,431 7.46 -55.1 2.05 UB-4 O&M UB 7/31/13 10.18 -- -- -- 79 8.79 128.6 7.54
UB-4 O&M UB 9/24/13 10.18 5.46 4.72 -- 15,238 6.33 -53.7 0.32 UB-4 O&M UB 2/26/14 10.18 5.03 5.15 3,800 12,897 7.05 -164.3 1.79 UB-4 O&M UB 9/17/14 10.18 5.70 4.48 -- 10,869 7.30 -153.1 0.52 UB-4 O&M UB 6/10/15 10.18 5.40 4.78 -- 8,413 7.35 -139.7 1.78 UB-4 O&M UB 2/24/16 10.18 4.65 5.53 -- 5,184 7.63 -130.1 0.78 UB-4 O&M UB 9/22/16 10.18 5.53 4.65 -- 5,097 7.40 -65 0.64 UB-4 O&M UB 2/15/17 10.18 3.40 6.78 -- 2,664 7.53 -67.3 0.73 UB-4 O&M UB 9/20/17 10.18 5.40 4.78 -- 4,161 7.07 -59.7 0.58 UB-4 O&M UB 2/14/18 10.18 4.91 5.27 -- 2,683 7.29 -84.2 0.25 UB-4 O&M UB 9/26/18 10.18 5.42 4.76 -- 3,010 7.38 -153.7 0.74 UB-4 O&M UB 2/13/19 10.18 3.60 6.58 -- 2,491 7.59 -103.1 0.56 UB-4 O&M UB 9/24/19 10.18 5.35 4.83 -- 2,050 7.28 -69.8 0.81 UB-4 O&M UB 3/10/20 10.18 5.15 5.03 -- 2,874 7.82 58.5 0.81 LB-4 LB 9/18/07 10.14 5.60 4.54 3.4 754 7.04 138.8 1.57 LB-4 LB 11/13/07 10.14 4.75 5.39 -- 639 7.47 -73.6 0.08 Table 6B
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 1
Former Kaiser Aerotech Facilities
San Leandro, California

Page 8 of 8 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
LB-4 LB 2/4/08 10.14 4.58 5.56 -- 660 7.38 85.2 1.43
LB-4 LB 5/6/08 10.14 4.60 5.54 -- 643 6.24 -- --
LB-4 LB 2/2/09 10.14 4.91 5.23 -- 603 7.37 -73.9 0.55
LB-4 LB 2/3/10 10.14 3.92 6.22 -- 617 7.28 13.8 0.25
LB-4 LB 3/22/10 10.14 4.34 5.80 -- 694 -- -- --
LB-4 LB 4/2/10 10.14 0.78 9.36 -- 690 -- -- --
LB-4 LB 5/4/10 10.14 4.10 6.04 -- 702 7.90 -323.4 0.31
LB-4 LB 5/10/10 10.14 2.85 7.29 -- 768 -- -- --
LB-4 LB 8/3/10 10.14 4.98 5.16 -- -- -- -- --
LB-4 RDIP LB 8/4/10 10.14 -- -- 1,700 3,698 7.52 -260.4 0.34 LB-4 RDIP LB 2/9/11 10.14 4.69 5.45 -- 1,574 7.70 -123.4 1.25 LB-4 RDIP LB 8/10/11 10.14 4.90 5.24 -- 1,527 6.78 -89.0 -- LB-4 RDIP LB 10/18/11 10.14 5.18 4.96 -- 1,435 6.12 -163.3 0.44 LB-4 RDIP LB 10/21/11 10.14 5.98 4.16 -- 49,081 8.38 -126.7 1.58 LB-4 RDIP LB 2/7/12 10.14 5.20 4.94 -- 14,954 6.18 -113.9 0.91 LB-4 RDIP LB 8/23/12 10.14 6.70 3.44 -- 13,262 8.07 -141.2 1.43 LB-4 O&M LB 2/13/13 10.14 5.35 4.79 240 10,485 7.85 -102.3 0.53 LB-4 O&M LB 7/31/13 10.14 -- -- -- 8,650 7.20 -92.6 0.81 LB-4 O&M LB 7/31/13 10.14 -- -- -- 83 7.55 255.8 7.0
LB-4 O&M LB 9/24/13 10.14 5.42 4.72 -- 8,178 6.60 -52.3 0.30 LB-4 O&M LB 2/26/14 10.14 5.02 5.12 480 9,108 7.21 -150.4 1.96 LB-4 O&M LB 9/17/14 10.14 5.55 4.59 -- 8,484 7.59 -143.3 0.48 LB-4 O&M LB 6/10/15 10.14 5.46 4.68 -- 8,455 7.31 -129.7 1.83 LB-4 O&M LB 2/24/16 10.14 4.88 5.26 -- 7,086 7.38 -127.9 1.40 LB-4 O&M LB 9/22/16 10.14 5.57 4.57 -- 7,172 7.51 -92.1 0.73 LB-4 O&M LB 2/15/17 10.14 3.53 6.61 -- 5,656 7.58 -133.7 0.78 LB-4 O&M LB 9/20/17 10.14 5.37 4.77 -- 3,309 6.88 -121.7 0.43 LB-4 O&M LB 2/14/18 10.14 5.05 5.09 -- 2,556 6.82 -83.0 1.75 LB-4 O&M LB 9/26/18 10.14 5.44 4.70 -- 1,881 7.05 -86.8 3.68 LB-4 O&M LB 2/13/19 10.14 3.67 6.47 -- 2,440 6.93 -84.5 0.36 LB-4 O&M LB 9/24/19 10.14 5.31 4.83 -- 1,984 7.18 -42.1 0.66 LB-4 O&M LB 3/10/20 10.14 5.11 5.03 -- 2,151 7.64 46.6 0.47 Table 6C
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 4
Former Kaiser Aerotech Facilities
San Leandro, California

Page 1 of 3 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
RW-5 B 8/12/03 9.76 4.82 4.94 -- -- -- -- --
RW-5 B 8/13/03 9.76 -- -- -- 812 -- 70.4 4.15
RW-5 B 9/23/03 9.76 4.86 4.90 -- 787 -- -106 6.86
RW-5 PT ISCO FR B 6/6/05 9.76 -- -- -- 612 -- 43.7 5.87 RW-5 PT ISCO FR B 6/8/05 9.76 -- -- -- 2,780 -- 371.8 45.65 RW-5 PT ISCO FR B 6/9/05 9.76 -- -- -- 2,622 -- 341.2 43.66 RW-5 PT ISCO FR B 6/10/05 9.76 -- -- -- 2,570 -- 344.3 43.67 RW-5 PT ISCO FR B 6/13/05 9.76 -- -- -- 2,355 -- 262.4 42.27 RW-5 PT ISCO FR B 6/16/05 9.76 -- -- -- -- -- 163 34.60 RW-5 PT ISCO FR B 6/22/05 9.76 -- -- -- 1,095 -- 64.4 5.20 RW-5 PT ISCO FR B 6/27/05 9.76 -- -- -- 2,640 -- 241 20.50 RW-5 PT ISCO FR B 7/5/05 9.97 -- -- -- 1,179 -- 74.1 22.44 RW-5 PT ISCO FR B 7/11/05 9.97 -- -- -- 1,326 -- 88.6 24.75 RW-5 PT ISCO FR B 7/20/05 9.97 -- -- -- 620 -- 225 17.00 RW-5 PT ISCO FR B 7/27/05 9.97 -- -- -- 1,242 -- 146 39.19 RW-5 PT ISCO FR B 8/2/05 9.97 -- -- -- 1,360 -- 40.6 30.15 RW-5 PT ISCO FR B 8/8/05 9.97 -- -- -- 1,166 -- 51.0 30.00 RW-5 PT ISCO FR B 8/10/05 9.97 -- -- -- 3,160 -- 286.4 30.14 RW-5 PT ISCO FR B 8/15/05 9.97 -- -- -- 1,918 -- 151.3 20.92 RW-5 PT ISCO FR B 8/22/05 9.97 -- -- -- 1,588 -- 213.6 22.88 RW-5 PT ISCO FR B 8/29/05 9.97 -- -- -- 1,716 -- 47.4 13.95 RW-5 PT ISCO FR B 9/6/05 9.97 -- -- -- 2,390 -- -116.7 0.19 RW-5 PT ISCO FR B 9/14/05 9.97 4.99 4.98 -- 1,351 -- 66.0 23.42 RW-5 B 12/14/05 9.97 4.64 5.33 -- 1,499 -- 18.8 4.72
RW-5 B 2/1/07 9.97 4.50 5.47 -- -- -- -- --
RW-5 B 2/4/08 10.03 4.56 5.47 -- 1,044 7.25 -55.5 4.09
RW-5 B 6/5/08 10.03 5.22 4.81 -- 965 -- -- --
RW-5 B 6/5/08 10.03 1.88 8.15 -- 60,253 -- -- --
RW-5 RDIP B 11/6/08 10.03 -- -- -- 8,684 -- -133.2 2.76 RW-5 RDIP B 2/3/09 10.03 4.72 5.31 -- 13,107 6.60 -119.0 2.04 RW-5 RDIP B 5/19/09 10.03 4.66 5.37 -- 6,015 -- -- --
RW-5 RDIP B 5/21/09 10.03 -- -- -- 6,988 -- -- --
RW-5 RDIP B 8/4/09 10.03 4.21 5.82 -- -- -- -- --
RW-5 RDIP B 2/4/10 10.03 6.00 4.03 -- 10,294 6.73 -132.9 1.92 RW-5 RDIP B 2/8/11 10.03 4.42 5.61 -- 15,953 7.40 -149.1 0.26 RW-5 RDIP B 2/8/12 10.03 4.55 5.48 -- 6,205 6.86 -142.3 1.88 RW-5 O&M B 2/14/13 10.03 4.70 5.33 -- 2,634 7.54 -52.5 0.82 RW-5 O&M B 2/26/14 10.03 4.61 5.42 -- 3,449 6.98 -106.4 4.79 RW-5 O&M B 6/10/15 10.03 4.99 5.04 -- 2,235 6.60 -97.3 0.32 RW-5 O&M B 2/24/16 10.03 4.10 5.93 -- 1,761 7.40 -106.8 1.15 RW-5 O&M B 2/15/17 10.03 3.00 7.03 -- 6,662 7.08 -122.7 0.74 RW-5 O&M B 2/14/18 10.03 4.50 5.53 -- 4,296 7.06 -28.3 1.03 RW-5 O&M B 9/11/18 10.03 4.98 5.05 -- -- -- -- --
RW-5 O&M B 9/26/18 10.03 5.10 4.93 -- -- -- -- --
RW-5 O&M B 2/13/19 10.03 3.52 6.51 -- 44,182 8.09 -262.4 0.12 RW-5 O&M B 3/10/20 10.03 4.80 5.23 -- 7,398 7.06 -105.0 1.39 RW-6 B 8/12/03 9.23 4.30 4.93 -- -- -- -- --
RW-6 B 8/13/03 9.23 -- -- -- 768 -- 36.4 0.65
RW-6 B 12/16/03 9.23 3.30 5.93 -- 654 -- 131.7 0.37
RW-6 B 3/9/04 9.23 3.25 5.98 -- -- -- -- --
RW-6 B 3/10/04 9.23 -- -- -- 745 -- 1.6 0.17
RW-6 B 5/20/04 9.23 4.17 5.06 -- 692 -- -66.5 0.08
RW-6 B 9/29/04 9.23 4.27 4.96 -- 540 -- 68.5 0.54
RW-6 B 12/8/04 9.23 3.41 5.82 -- 690 -- -27.6 0.89
RW-6 B 3/8/05 9.23 2.96 6.27 -- -- -- -72.4 0.43
RW-6 B 3/9/05 9.23 -- -- -- 697 -- -1.0 0.14
RW-6 PT ISCO FR B 6/6/05 9.23 -- -- -- 707 -- -- --
RW-6 PT ISCO FR B 6/8/05 9.23 -- -- -- 1,679 -- 222 46.6 Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
Table 6C
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 4
Former Kaiser Aerotech Facilities
San Leandro, California

Page 2 of 3 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
RW-6 PT ISCO FR B 6/9/05 9.23 -- -- -- 1,597 -- 199.7 47.42 RW-6 PT ISCO FR B 6/10/05 9.23 -- -- -- 1,588 -- 197.9 47.58 RW-6 PT ISCO FR B 6/13/05 9.23 -- -- -- 1,284 -- 121.8 47.68 RW-6 PT ISCO FR B 6/16/05 9.23 -- -- -- -- -- 42.6 7.78 RW-6 PT ISCO FR B 6/22/05 9.23 -- -- -- 862 -- -3.9 6.17 RW-6 PT ISCO FR B 6/27/05 9.23 -- -- -- 1,126 -- 165 52.6 RW-6 PT ISCO FR B 7/5/05 9.99 -- -- -- 662 -- 62.4 26.57 RW-6 PT ISCO FR B 7/11/05 9.99 -- -- -- 930 -- 83.4 35.40 RW-6 PT ISCO FR B 7/20/05 9.99 -- -- -- 844 -- 80 17.00 RW-6 PT ISCO FR B 7/27/05 9.99 -- -- -- 999 -- 145 36.95 RW-6 PT ISCO FR B 8/2/05 9.99 -- -- -- 1,012 -- 24.6 28.90 RW-6 PT ISCO FR B 8/8/05 9.99 -- -- -- 893 -- 45.0 29.00 RW-6 PT ISCO FR B 8/8/05 9.99 -- -- -- 904 -- 43.0 26.00 RW-6 PT ISCO FR B 8/9/05 9.99 -- -- -- 972 -- 330.0 38.68 RW-6 PT ISCO FR B 8/9/05 9.99 -- -- -- 975 -- 325.0 39.00 RW-6 PT ISCO FR B 8/10/05 9.99 -- -- -- 999 -- 295.9 37.13 RW-6 PT ISCO FR B 8/15/05 9.99 -- -- -- 936 -- 111.4 22.13 RW-6 PT ISCO FR B 8/22/05 9.99 -- -- -- 921 -- 229.9 51.31 RW-6 PT ISCO FR B 8/29/05 9.99 -- -- -- 1,538 -- -62.2 29.00 RW-6 PT ISCO FR B 9/6/05 9.99 -- -- -- 1,523 -- -22.1 24.24 RW-6 PT ISCO FR B 9/14/05 9.99 5.04 4.95 -- 830 -- 225.3 29.80 RW-6 B 12/15/05 9.99 4.82 5.17 -- 840 -- -26.3 8.63
RW-6 B 3/14/06 9.99 3.17 6.82 -- 897 -- -74.2 6.74
RW-6 B 6/14/06 9.99 4.93 5.06 -- 819 6.97 -38.9 0.97
RW-6 B 9/21/06 9.99 4.92 5.07 -- 772 7.30 -38.3 0.15
RW-6 B 2/1/07 9.99 4.57 5.42 -- 1,569 11.16 34.9 3.53
RW-6 B 5/9/07 9.99 4.54 5.45 -- 755 7.14 -24.0 0.45
RW-6 B 8/14/07 9.99 4.98 5.01 -- 802 7.24 -110.3 0.23
RW-6 B 11/13/07 9.99 4.58 5.41 -- 776 7.28 -26.3 0.15
RW-6 B 2/5/08 9.99 3.20 6.79 -- 896 7.27 136 1.56
RW-6 B 5/6/08 9.99 4.60 5.39 -- -- -- -- --
RW-6 RDIP B 6/5/08 10.07 4.98 5.09 -- 754 -- -- --
RW-6 RDIP B 8/5/08 10.07 4.98 5.09 17,000 18,619 6.42 -78.9 2.45 RW-6 RDIP B 11/6/08 10.07 4.68 5.39 -- 9,400 6.34 -115.5 0.56 RW-6 RDIP B 2/2/09 10.07 4.82 5.25 4,100 8,759 6.48 -211.1 1.30 RW-6 RDIP B 5/6/09 10.07 4.45 5.62 -- 4,819 6.65 -104.4 1.18 RW-6 RDIP B 5/19/09 10.07 4.65 5.42 -- 5,574 -- -- --
RW-6 RDIP B 5/21/09 10.07 4.72 5.35 -- 5,728 -- -- --
RW-6 RDIP B 8/4/09 10.07 6.83 3.24 -- 15,458 6.28 -231.9 2.00 RW-6 RDIP B 11/4/09 10.07 4.73 5.34 -- -- -- -- --
RW-6 RDIP B 2/4/10 10.07 3.77 6.30 920 6,194 6.67 -126.8 0.96 RW-6 RDIP B 5/4/10 10.07 4.18 5.89 -- 4,811 7.85 -244 0.91 RW-6 RDIP B 8/3/10 10.07 4.71 5.36 -- -- -- -- --
RW-6 RDIP B 8/4/10 10.07 -- -- -- 5,028 7.74 -101.6 0.85 RW-6 RDIP B 2/8/11 10.07 4.54 5.53 -- 13,821 6.81 -96.3 0.62 RW-6 RDIP B 2/7/12 10.07 4.62 5.45 -- 3,931 6.94 -152.0 0.34 RW-6 O&M B 2/14/13 10.07 4.62 5.45 110 2,013 7.52 -78.4 0.27 RW-6 O&M B 2/26/14 10.07 4.72 5.35 -- 7,561 7.09 -87.8 3.09 RW-6 O&M B 6/10/15 10.07 5.02 5.05 -- 1,575 6.57 -79.4 0.44 RW-6 O&M B 2/24/16 10.07 4.22 5.85 -- 1,213 7.34 -75.9 0.71 RW-6 O&M B 2/15/17 10.07 3.10 6.97 3.7 2,102 7.61 -129.3 0.80 RW-6 O&M B 2/14/18 10.07 4.60 5.47 -- 2,365 6.92 -32.5 0.58 RW-6 O&M B 9/11/18 10.07 5.11 4.96 -- 1,043 7.55 -197.2 -- RW-6 O&M B 9/26/18 10.07 5.42 4.65 -- -- -- -- --
RW-6 O&M B 2/13/19 10.07 3.60 6.47 -- 46,728 7.96 -350.7 0.57 RW-6 O&M B 3/10/20 10.07 4.90 5.17 -- 4,331 6.89 -92.2 1.24 RW-7 B 8/12/03 10.11 5.19 4.92 -- -- -- -- --
RW-7 B 8/13/03 10.11 -- -- -- 1,524 -- -103.1 2.03
RW-7 B 9/23/03 10.11 5.25 4.86 -- 694 -- -104.9 7.72
Table 6C
Groundwater Elevation Data, Field Measurements and Other Analyses Degreasing Tank No. 4
Former Kaiser Aerotech Facilities
San Leandro, California

Page 3 of 3 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
RW-7 B 3/8/05 10.11 3.70 6.41 -- -- -- -- --
RW-7 B 3/9/05 10.11 -- -- -- 660 -- 29.6 4.70
RW-7 PT ISCO FR B 6/6/05 10.11 -- -- -- 684 -- -49.3 1.49 RW-7 PT ISCO FR B 6/6/05 10.11 -- -- -- -- -- 38.7 4.60 RW-7 PT ISCO FR B 6/7/05 10.11 -- -- -- -- -- 45.8 6.65 RW-7 PT ISCO FR B 6/7/05 10.11 -- -- -- -- -- 44.3 6.64 RW-7 PT ISCO FR B 6/8/05 10.11 -- -- -- 588 -- 71.5 5.69 RW-7 PT ISCO FR B 6/9/05 10.11 -- -- -- 589 -- 47.7 4.59 RW-7 PT ISCO FR B 6/10/05 10.11 -- -- -- 589 -- 47.2 3.39 RW-7 PT ISCO FR B 6/13/05 10.11 -- -- -- 590 -- 41.3 2.60 RW-7 PT ISCO FR B 6/16/05 10.11 -- -- -- -- -- 42.3 1.40 RW-7 PT ISCO FR B 6/22/05 10.11 -- -- -- 710 -- -50.3 4.40 RW-7 PT ISCO FR B 6/27/05 10.11 -- -- -- 628 -- 177.3 3.30 RW-7 PT ISCO FR B 7/5/05 10.11 -- -- -- 624 -- 36.9 4.54 RW-7 PT ISCO FR B 7/11/05 10.11 -- -- -- 637 -- 76 3.23 RW-7 PT ISCO FR B 7/11/05 10.11 -- -- -- 637 -- 73.7 3.30 RW-7 PT ISCO FR B 7/11/05 10.11 -- -- -- 639 -- 74 3.40 RW-7 PT ISCO FR B 7/12/05 10.11 -- -- -- 725 -- 82.4 3.80 RW-7 PT ISCO FR B 7/12/05 10.11 -- -- -- 637 -- 91 4.50 RW-7 PT ISCO FR B 7/20/05 10.11 -- -- -- 655 -- 26.6 6.90 RW-7 PT ISCO FR B 7/27/05 10.11 -- -- -- 716 -- 178 4.54 RW-7 PT ISCO FR B 8/2/05 10.11 -- -- -- 772 -- -35.2 5.47 RW-7 PT ISCO FR B 8/8/05 10.11 -- -- -- 705 -- -7.5 5.76 RW-7 PT ISCO FR B 8/8/05 10.11 -- -- -- 706 -- -3.0 6.30 RW-7 PT ISCO FR B 8/8/05 10.11 -- -- -- 710 -- -2.0 6.50 RW-7 PT ISCO FR B 8/9/05 10.11 -- -- -- 711 -- 30.0 5.50 RW-7 PT ISCO FR B 8/9/05 10.11 -- -- -- 711 -- 0.20 5.70 RW-7 PT ISCO FR B 8/10/05 10.11 -- -- -- 717 -- 62.1 4.70 RW-7 PT ISCO FR B 8/15/05 10.11 -- -- -- 781 -- 217.3 6.73 RW-7 PT ISCO FR B 8/22/05 10.11 -- -- -- 731 -- 181.7 0.32 RW-7 PT ISCO FR B 8/29/05 10.11 -- -- -- 729 -- 86.6 1.00 RW-7 PT ISCO FR B 9/6/05 10.11 -- -- -- 749 -- 37.9 0.58 RW-7 PT ISCO FR B 9/14/05 10.11 5.24 4.87 -- 612 -- 173.6 2.36 RW-7 B 12/15/05 10.11 5.15 4.96 -- 818 -- -46.3 13.75
RW-7 B 2/4/08 10.11 3.92 6.19 -- 861 7.59 53.2 2.63
RW-7 B 6/5/08 10.11 6.11 4.00 -- 808 -- -- --
RW-7 RDIP B 8/6/08 10.11 5.16 4.95 -- 1,842 6.67 -72.9 1.68 RW-7 RDIP B 11/6/08 10.11 -- -- -- 824 -- 17.5 2.45
RW-7 RDIP B 12/2/08 10.11 4.95 5.16 -- 775 -- -255.7 -- RW-7 RDIP B 2/3/09 10.11 5.85 4.26 3,700 12,621 6.26 -60.3 2.28 RW-7 RDIP B 5/19/09 10.11 6.04 4.07 -- 985 -- -- --
RW-7 RDIP B 5/20/09 10.11 5.98 4.13 -- 54,390 -- -- --
RW-7 RDIP B 5/21/09 10.11 1.34 8.77 -- 46,421 -- -- --
RW-7 RDIP B 6/4/09 10.11 5.81 4.30 -- 29,320 -- -- --
RW-7 RDIP B 6/5/09 10.11 3.28 6.83 -- 28,307 -- -- --
RW-7 RDIP B 8/4/09 10.11 5.65 4.46 17,000 31,918 6.44 -232.1 4.74 RW-7 RDIP B 2/2/10 10.11 3.90 6.21 5,900 14,765 6.59 -208.3 0.27 RW-7 RDIP B 2/8/11 10.11 4.50 5.61 -- 5,857 7.25 -139.4 0.31 RW-7 RDIP B 2/7/12 10.11 4.80 5.31 -- 4,864 7.00 -118.6 0.78 RW-7 O&M B 2/14/13 10.11 4.87 5.24 -- 5,065 7.63 -75.8 0.41 RW-7 O&M B 2/26/14 10.11 4.99 5.12 -- 4,717 7.32 -48.9 1.59 RW-7 O&M B 6/10/15 10.11 5.29 4.82 -- 5,004 6.90 -24.7 0.47 RW-7 O&M B 2/24/16 10.11 4.80 5.31 -- 3,898 7.54 -10.3 1.02 RW-7 O&M B 2/15/17 10.11 3.34 6.77 -- 3,814 7.38 -150.3 0.70 RW-7 O&M B 9/11/18 10.11 5.01 5.10 -- -- -- -- --
RW-7 O&M B 9/26/18 10.11 5.35 4.76 -- -- -- -- --
RW-7 O&M B 2/13/19 10.11 3.58 6.53 -- 4,754 7.32 -103.8 0.36 Table 6D
Groundwater Elevation Data, Field Measurements and Other Analyses Breezeway Sump
Former Kaiser Aerotech Facilities
San Leandro, California

Page 1 of 7 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
MW-17 A 9/22/98 9.41 6.18 3.23 -- -- -- -- --
MW-17 A 9/23/98 9.41 -- -- -- -- -- 140.6 2.21
MW-17 A 12/9/98 9.41 5.90 3.51 -- -- -- 143.0 2.91
MW-17 A 3/22/99 9.41 5.81 3.60 -- -- -- -- --
MW-17 A 6/21/99 9.41 6.13 3.28 -- -- -- -- --
MW-17 A 9/20/99 9.41 6.17 3.24 -- -- -- -- --
MW-17 A 12/13/99 9.41 6.01 3.40 -- -- -- -- --
MW-17 A 3/13/00 9.41 5.68 3.73 -- -- -- -- --
MW-17 A 9/18/00 9.41 6.12 3.29 -- -- -- -- --
MW-17 A 3/12/01 9.41 5.84 3.57 -- 856 -- -- --
MW-17 A 9/24/01 9.41 6.15 3.26 -- -- -- -- --
MW-17 A 3/26/02 9.41 5.73 3.68 -- -- -- -- --
MW-17 A 10/3/02 9.41 6.03 3.38 -- 751 -- -- --
MW-17 A 3/26/03 9.41 5.99 3.42 -- 1,008 -- -0.96 0.86
MW-17 A 6/26/03 9.41 6.08 3.33 -- -- -- -- --
MW-17 A 9/23/03 9.41 6.16 3.25 -- 880 -- -246.0 0.58
MW-17 A 12/16/03 9.41 5.83 3.58 -- -- -- -- --
MW-17 A 3/9/04 9.41 5.98 3.43 -- -- -- -- --
MW-17 A 3/10/04 9.41 -- -- -- 867 -- 96.6 0.46
MW-17 A 5/20/04 9.41 6.17 3.24 -- -- -- -- --
MW-17 A 9/29/04 9.41 6.16 3.25 -- -- -- -- --
MW-17 A 12/8/04 9.41 4.65 4.76 -- -- -- -- --
MW-17 A 3/8/05 9.41 5.83 3.58 -- 852 -- -32.0 1.58
MW-17 A 6/14/05 9.41 6.05 3.36 -- -- -- -- --
MW-17 A 9/14/05 9.41 6.10 3.31 -- -- -- -- --
MW-17 A 12/14/05 9.41 6.11 3.30 -- -- -- -- --
MW-17 A 3/15/06 9.41 5.36 4.05 -- 906 -- 135.3 1.49
MW-17 A 6/13/06 9.41 6.12 3.29 -- -- -- -- --
MW-17 A 9/20/06 9.41 6.24 3.17 -- -- -- -- --
MW-17 A 1/30/07 9.41 6.03 3.38 -- -- -- -- --
MW-17 A 1/31/07 9.41 -- -- -- 858 6.95 -32.2 0.58
MW-17 A 5/9/07 9.41 6.05 3.36 -- -- -- -- --
MW-17 A 8/15/07 9.41 6.17 3.24 -- -- -- -- --
MW-17 A 11/14/07 9.41 6.06 3.35 -- -- -- -- --
MW-17 A 2/4/08 9.41 5.74 3.67 -- 979 7.20 -4.3 2.08
MW-17 A 5/6/08 9.41 6.18 3.23 -- -- -- -- --
MW-17 A 8/5/08 9.41 6.22 3.19 -- -- -- -- --
MW-17 A 11/6/08 9.41 6.03 3.38 -- -- -- -- --
MW-17 A 2/4/09 9.41 6.08 3.33 -- 1,894 7.12 6.6 0.41
MW-17 A 3/6/09 9.41 -- -- -- 851 -- 137 2.35
MW-17 A 5/6/09 9.41 5.97 3.44 -- -- -- -- --
MW-17 A 8/25/09 9.41 6.22 3.19 -- -- -- -- --
MW-17 A 11/4/09 9.41 6.12 3.29 -- -- -- -- --
MW-17 A 2/3/10 9.41 5.84 3.57 -- 980 7.05 61.1 0.64
MW-17 A 5/4/10 9.41 6.05 3.36 -- -- -- -- --
MW-17 A 5/10/10 9.41 6.01 3.40 -- 1,092 -- -- --
MW-17 A 8/3/10 9.41 4.16 5.25 -- -- -- -- --
MW-17 A 2/8/11 9.41 6.07 3.34 -- 908 6.65 -88.6 1.78
MW-17 A 10/18/11 9.41 6.13 3.28 -- 1,056 7.26 -139.5 0.71 MW-17 A 10/21/11 9.41 6.13 3.28 -- 983 7.94 17.5 0.79
MW-17 A 2/7/12 9.41 6.01 3.40 -- -- -- -- --
MW-17 A 2/12/13 9.41 6.17 3.24 -- -- -- -- --
MW-17 A 3/4/13 9.41 6.19 3.22 -- 890 7.42 204.3 0.87
MW-17 A 2/26/14 9.41 6.11 3.30 -- -- -- -- --
MW-17 A 6/9/15 9.41 6.24 3.17 -- 1,234 7.24 -57.3 1.18
MW-17 A 2/24/16 9.41 6.10 3.31 -- 1,016 6.67 2.64 17.51 MW-17 A 2/15/17 9.41 5.85 3.56 3.0 829 7.69 30.5 0.79
MW-17 A 2/14/18 9.41 6.15 3.26 -- -- -- -- --
MW-17 A 9/10/18 9.41 6.23 3.18 -- 803 7.26 -36.8 --
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Table 6D
Groundwater Elevation Data, Field Measurements and Other Analyses Breezeway Sump
Former Kaiser Aerotech Facilities
San Leandro, California

Page 2 of 7 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
MW-17 A 2/12/19 9.41 5.80 3.61 -- 923 7.69 88.2 0.54
MW-17 A 3/11/20 9.41 6.22 3.19 -- -- -- -- --
RW-13 UB 6/8/05 9.58 5.18 4.40 12 599 -- -97.5 0.31
RW-13 PT ERD UB 6/13/05 9.58 5.03 4.55 -- 742 -- 43.6 0.19 RW-13 PT ERD UB 6/14/05 9.58 5.05 4.53 -- -- -- 43.4 0.88 RW-13 PT ERD UB 6/16/05 9.58 5.61 3.97 -- -- -- 45.0 1.70 RW-13 PT ERD UB 6/21/05 9.58 5.19 4.39 15,000 16,163 -- -98.4 2.11 RW-13 PT ERD UB 6/27/05 9.58 5.35 4.23 4,400 13,173 -- -470.0 0.69 RW-13 PT ERD UB 7/5/05 9.58 5.36 4.22 8,500 10,678 -- 0.90 0.72 RW-13 PT ERD UB 7/12/05 9.58 5.38 4.20 7,900 9,665 -- 32.9 1.54 RW-13 PT ERD UB 7/19/05 9.58 5.72 3.86 7,200 10,505 -- -193.4 0.49 RW-13 PT ERD UB 7/26/05 9.58 5.75 3.83 -- 13,153 -- -300.0 0.68 RW-13 PT ERD UB 8/2/05 9.58 6.09 3.49 19,000 24,566 -- -131.9 1.56 RW-13 PT ERD UB 8/10/05 9.58 6.05 3.53 -- 23,927 -- -328.5 0.11 RW-13 PT ERD UB 8/15/05 9.58 6.05 3.53 -- 36,922 -- -532.5 1.10 RW-13 PT ERD UB 8/22/05 9.58 6.35 3.23 12,000 16,602 -- -310.9 1.22 RW-13 PT ERD UB 8/23/05 9.58 5.78 3.80 -- 33,600 -- -300.0 0.25 RW-13 PT ERD UB 8/29/05 9.58 5.84 3.74 12,000 16,529 -- -275.6 0.63 RW-13 PT ERD UB 9/6/05 9.58 5.74 3.84 -- 28,765 -- -239.8 0.35 RW-13 PT ERD UB 9/12/05 9.58 6.20 3.38 -- 26,328 -- -239.2 0.27 RW-13 PT ERD UB 9/19/05 9.58 5.75 3.83 6,400 15,369 -- -225.5 0.62 RW-13 PT ERD UB 10/12/05 9.58 5.90 3.68 5,700 9,194 -- -202.2 5.46 RW-13 PT ERD UB 11/10/05 9.58 5.60 3.98 4,800 7,850 -- -183.5 1.95 RW-13 PT ERD UB 12/14/05 9.58 5.39 4.19 3,800 7,550 -- -133.2 7.03 RW-13 PT ERD UB 2/9/06 9.58 4.70 4.88 1,900 6,558 -- -87.1 10.71 RW-13 PT ERD UB 3/14/06 9.58 4.25 5.33 2,000 5,694 -- -108.4 1.14 RW-13 PT ERD UB 6/13/06 9.58 5.61 3.97 2,800 6,987 6.34 7.9 1.46 RW-13 PT ERD UB 9/21/06 9.58 5.53 4.05 1,900 6,138 6.74 -141.9 0.08 RW-13 PT ERD UB 10/24/06 9.58 5.69 3.89 -- 4,859 7.04 -102.4 0.19 RW-13 PT ERD UB 1/30/07 9.58 5.56 4.02 440 793 7.05 -143.1 0.31 RW-13 PT ERD UB 5/9/07 9.58 5.12 4.46 1,000 4,335 6.71 -72.6 3.23 RW-13 PT ERD UB 8/15/07 9.58 5.69 3.89 680 4,222 6.93 -86.1 3.08 RW-13 PT ERD UB 11/14/07 9.58 5.70 3.88 1,400 3,345 6.64 -68.5 4.08 RW-13 PT ERD UB 2/7/08 9.58 4.60 4.98 330 2,590 6.59 -140.0 0.96 RW-13 PT ERD UB 5/6/08 9.58 5.45 4.13 360 3,226 6.65 -98.2 0.87 RW-13 PT ERD UB 6/6/08 9.58 5.78 3.80 -- 1,684 -- -- -- RW-13 RDIP UB 6/6/08 9.58 5.49 4.09 -- 63,747 -- -- --
RW-13 RDIP UB 6/11/08 9.58 6.36 3.22 -- 33,518 -- -- -- RW-13 RDIP UB 8/5/08 9.82 8.05 1.77 13,000 20,670 6.52 -260.0 0.51 RW-13 RDIP UB 11/6/08 9.82 5.47 4.35 -- 14,608 -- 62.8 3.55 RW-13 RDIP UB 2/5/09 9.82 5.59 4.23 4,400 22,592 6.70 -128.7 1.35 RW-13 RDIP UB 5/6/09 9.82 5.02 4.80 -- 6,720 7.05 -146.6 1.31 RW-13 RDIP UB 5/20/09 9.82 5.51 4.31 -- 7,433 -- -- --
RW-13 RDIP UB 5/20/09 9.82 5.33 4.49 -- 7,417 -- -- --
RW-13 RDIP UB 8/6/09 9.82 5.86 3.96 -- 7,029 6.97 -193.9 0.77 RW-13 RDIP UB 11/4/09 9.82 5.41 4.41 -- -- -- -- --
RW-13 RDIP UB 2/4/10 9.82 4.62 5.20 670 4,931 6.86 -134.5 0.21 RW-13 RDIP UB 8/3/10 9.82 5.48 4.34 -- -- -- -- --
RW-13 RDIP UB 8/4/10 9.82 -- -- -- 2,919 7.57 -160.8 2.62 RW-13 RDIP UB 2/9/11 9.82 5.24 4.58 -- 3,249 7.40 -121.3 0.66 RW-13 RDIP UB 10/18/11 9.82 5.30 4.52 -- 2,346 7.24 -221.3 0.38 RW-13 RDIP UB 10/21/11 9.82 5.19 4.63 -- 2,108 8.40 -211.3 0.41 RW-13 RDIP UB 2/7/12 9.82 5.10 4.72 -- 1,666 7.28 -182.2 0.46 RW-13 O&M UB 2/13/13 9.82 5.11 4.71 56 1,451 7.68 -60.1 0.86 RW-13 O&M UB 7/31/13 9.82 5.75 4.07 -- 1,043 8.13 -51.3 1.21 RW-13 O&M UB 7/31/13 9.82 4.58 5.24 -- 26,546 6.32 166.5 6.78 RW-13 O&M UB 9/24/13 9.82 5.76 4.06 -- 13,706 6.32 -107.9 0.95 RW-13 O&M UB 2/25/14 9.82 5.60 4.22 -- 9,244 7.17 -163.5 1.95 RW-13 O&M UB 6/9/15 9.82 5.75 4.07 -- 5,926 7.50 -166.5 1.77 Table 6D
Groundwater Elevation Data, Field Measurements and Other Analyses Breezeway Sump
Former Kaiser Aerotech Facilities
San Leandro, California

Page 3 of 7 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
RW-13 O&M UB 2/24/16 9.82 5.12 4.70 8.4 4,698 6.38 -89.7 2.63 RW-13 O&M UB 2/15/17 9.82 4.20 5.62 2.7 2,176 7.83 -57.8 0.84 RW-13 O&M UB 2/14/18 9.82 5.20 4.62 -- 1,773 7.01 -43.7 0.97 RW-13 O&M UB 9/10/18 9.82 5.50 4.32 -- 1,343 7.61 -117.2 -- RW-13 O&M UB 9/12/18 9.82 5.52 4.30 -- -- -- -- --
RW-13 O&M UB 2/13/19 9.82 4.45 5.37 -- 9,669 8.36 -147.5 0.51 RW-13 O&M UB 3/11/20 9.82 5.52 4.30 -- 6,249 7.18 -45.2 1.27 LMW-10 PT ERD LB 9/19/07 10.08 5.39 4.69 820 2,209 7.83 -167.0 0.27 LMW-10 PT ERD LB 11/13/07 10.08 6.14 3.94 9,700 1,505 6.60 -81.5 0.29 LMW-10 PT ERD LB 2/7/08 10.08 5.29 4.79 42 1,350 6.56 -81.7 2.80 LMW-10 PT ERD LB 5/7/08 10.08 5.79 4.29 -- 715 6.82 -94.4 0.97 LMW-10 PT ERD LB 6/6/08 10.08 6.40 3.68 -- 829 -- -- -- LMW-10 PT ERD LB 6/11/08 10.08 4.24 5.84 -- 1,183 -- -- -- LMW-10 PT ERD LB 6/11/08 10.08 1.97 8.11 -- 66,845 -- -- -- LMW-10 RDIP LB 8/5/08 10.07 6.45 3.62 9,300 15,194 6.33 -296.0 0.50 LMW-10 RDIP LB 11/6/08 10.07 6.55 3.52 -- 8,701 -- 35.4 3.51 LMW-10 RDIP LB 2/5/09 10.07 6.23 3.84 1,600 13,111 6.51 -128.3 0.69 LMW-10 RDIP LB 5/6/09 10.07 5.20 4.87 -- 5,529 6.86 -114.1 2.51 LMW-10 RDIP LB 5/20/09 10.07 5.08 4.99 -- 6,341 -- -- -- LMW-10 RDIP LB 5/20/09 10.07 4.98 5.09 -- 6,359 -- -- -- LMW-10 RDIP LB 8/6/09 10.07 7.74 2.33 -- 5,381 6.76 -164.3 1.05 LMW-10 RDIP LB 11/4/09 10.07 5.37 4.70 -- -- -- -- --
LMW-10 RDIP LB 2/4/10 10.07 4.70 5.37 65 3,837 5.92 -154.6 1.00 LMW-10 RDIP LB 8/3/10 10.07 5.45 4.62 -- -- -- -- --
LMW-10 RDIP LB 8/4/10 10.07 -- -- -- 3,321 7.16 -131.2 0.93 LMW-10 RDIP LB 2/9/11 10.07 5.39 4.68 -- 2,777 7.06 -95.3 0.34 LMW-10 RDIP LB 10/18/11 10.07 5.36 4.71 -- 1,498 6.79 -195.9 0.75 LMW-10 RDIP LB 10/21/11 10.07 5.00 5.07 -- 1,368 8.54 -186.3 0.55 LMW-10 RDIP LB 2/7/12 10.07 5.05 5.02 60 1,520 7.35 -53.0 0.35 LMW-10 RDIP LB 2/13/13 10.07 5.30 4.77 75 1,251 7.70 -41.4 1.11 LMW-10 O&M LB 3/4/13 10.07 5.45 4.62 -- -- -- -- --
LMW-10 O&M LB 7/30/13 10.07 -- -- -- 1,184 9.39 -46.8 0.77 LMW-10 O&M LB 7/30/13 10.07 -- -- -- 170 8.98 67.8 6.86 LMW-10 O&M LB 9/24/13 10.07 5.73 4.34 -- 12,172 6.15 -64.7 0.98 LMW-10 O&M LB 2/25/14 10.07 5.92 4.15 1,300 5,059 6.76 -124.7 1.45 LMW-10 O&M LB 6/9/15 10.07 5.65 4.42 -- 2,587 7.10 -130.3 1.06 LMW-10 O&M LB 2/24/16 10.07 5.16 4.91 5.5 2,263 5.99 -62.2 2.04 LMW-10 O&M LB 2/15/17 10.07 5.65 4.42 -- 1,506 7.45 -86.5 0.81 LMW-10 O&M LB 2/16/17 10.07 -- -- 2.8 -- -- -- --
LMW-10 O&M LB 2/14/18 10.07 5.60 4.47 -- 1,055 6.90 -62.2 0.72 LMW-10 O&M LB 9/10/18 10.07 5.70 4.37 -- 792 7.14 -131.8 -- LMW-10 O&M LB 9/12/18 10.07 6.04 4.03 -- -- -- -- --
LMW-10 O&M LB 2/13/19 10.07 4.60 5.47 -- 8,608 7.75 -130.4 0.65 LMW-10 O&M LB 3/11/20 10.07 5.92 4.15 -- 6,117 7.07 -75.8 0.79 RW-12 B 6/8/05 9.75 5.36 4.39 6.2 520 -- 45.1 0.42
RW-12 PT ERD B 6/13/05 9.75 5.22 4.53 -- 510 -- 46.2 1.66 RW-12 PT ERD B 6/14/05 9.75 5.24 4.51 23 -- -- 48.3 0.89 RW-12 PT ERD B 6/16/05 9.75 5.32 4.43 340 -- -- 0.90 0.55 RW-12 PT ERD B 6/21/05 9.75 5.28 4.47 7,000 8,968 -- -225.7 0.68 RW-12 PT ERD B 6/27/05 9.75 5.48 4.27 1,900 16,876 -- -138.1 0.82 RW-12 PT ERD B 7/5/05 9.75 5.49 4.26 3,800 5,888 -- -22.5 0.68 RW-12 PT ERD B 7/12/05 9.75 5.51 4.24 3,800 3,582 -- -4.6 0.84 RW-12 PT ERD B 7/19/05 9.75 5.89 3.86 4,600 6,582 -- -216.7 0.82 RW-12 PT ERD B 7/26/05 9.75 5.83 3.92 -- 5,702 -- -250.0 0.70 RW-12 PT ERD B 7/26/05 9.75 5.51 4.24 -- 25,205 -- -270.0 0.70 RW-12 PT ERD B 8/2/05 9.75 5.79 3.96 3,800 7,030 -- -140.1 0.95 RW-12 PT ERD B 8/10/05 9.75 5.70 4.05 -- 8,207 -- -134.7 0.37 RW-12 PT ERD B 8/15/05 9.75 5.75 4.00 -- 8,164 -- -249.3 1.00 Table 6D
Groundwater Elevation Data, Field Measurements and Other Analyses Breezeway Sump
Former Kaiser Aerotech Facilities
San Leandro, California

Page 4 of 7 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
RW-12 PT ERD B 8/22/05 9.75 5.69 4.06 4,700 7,349 -- -157.9 1.63 RW-12 PT ERD B 8/23/05 9.75 5.66 4.09 -- 16,500 -- -250.0 1.70 RW-12 PT ERD B 8/29/05 9.75 5.72 4.03 10,000 12,050 -- -183.5 0.46 RW-12 PT ERD B 9/6/05 9.75 5.96 3.79 -- 12,285 -- -122.3 1.10 RW-12 PT ERD B 9/12/05 9.75 5.78 3.97 -- 15,725 -- -142.6 0.95 RW-12 PT ERD B 9/19/05 9.75 5.86 3.89 6,700 15,350 -- -183.8 1.71 RW-12 PT ERD B 10/12/05 9.75 5.59 4.16 12,000 14,765 -- -226.2 0.3 RW-12 PT ERD B 11/10/05 9.75 5.90 3.85 9,100 12,766 -- -215.7 0.77 RW-12 PT ERD B 12/14/05 9.75 5.46 4.29 4,800 10,400 -- -107.0 1.94 RW-12 PT ERD B 2/9/06 9.75 4.76 4.99 3,200 9,495 -- -64.5 9.3 RW-12 PT ERD B 3/14/06 9.75 4.78 4.97 5,000 10,510 -- -89.4 0.92 RW-12 PT ERD B 6/13/06 9.75 5.11 4.64 4,500 9,384 6.39 -49.2 0.88 RW-12 PT ERD B 9/21/06 9.75 5.35 4.40 2,500 6,781 6.65 -120.2 0.13 RW-12 PT ERD B 1/31/07 9.75 5.10 4.65 2,900 6,666 7.07 -65.3 5.44 RW-12 PT ERD B 5/10/07 9.75 5.87 3.88 -- 5,822 6.62 -122.5 0.49 RW-12 PT ERD B 2/7/08 9.75 5.96 3.79 390 2,456 6.62 -170.7 0.44 RW-12 PT ERD B 6/6/08 9.75 5.42 4.33 -- 1,458 -- -- --
RW-12 PT ERD B 6/6/08 9.75 1.05 8.70 -- 1,795 -- -- --
RW-12 PT ERD B 6/11/08 9.75 6.94 2.81 -- 7,363 -- -- -- RW-12 PT ERD B 6/11/08 9.75 2.54 7.21 -- 7,753 -- -- -- RW-12 RDIP B 11/6/08 9.75 -- -- -- 4,225 -- 194.3 3.54
RW-12 RDIP B 2/5/09 9.75 7.48 2.27 -- 10,690 6.86 -147.3 1.32 RW-12 RDIP B 5/20/09 9.75 5.13 4.62 -- 2,878 -- -- --
RW-12 RDIP B 5/20/09 9.75 4.18 5.57 -- 2,896 -- -- --
RW-12 RDIP B 2/4/10 9.75 6.10 3.65 -- 2,233 5.87 -149.3 1.40 RW-12 RDIP B 2/9/11 9.75 5.60 4.15 -- 1,209 7.43 -114.4 0.49 RW-12 RDIP B 10/18/11 9.75 5.88 3.87 -- 1,237 7.41 -198.4 0.62 RW-12 RDIP B 10/21/11 9.75 5.92 3.83 -- 1,130 8.73 -113.4 0.79 RW-12 RDIP B 2/7/12 9.75 5.00 4.75 -- 1,147 7.70 -113.7 0.47 RW-12 O&M B 2/13/13 9.75 5.39 4.36 56 988 7.53 -89.8 0.59 RW-12 O&M B 2/26/14 9.75 7.48 2.27 -- 1,508 6.77 -124.4 1.23 RW-12 O&M B 6/11/15 9.75 5.26 4.49 -- 646 6.01 129.0 -- RW-12 O&M B 2/24/16 9.75 5.04 4.71 5.2 886 6.41 -81.9 1.98 RW-12 O&M B 2/15/17 9.75 4.36 5.39 -- 1,284 7.81 18.3 0.38 RW-12 O&M B 2/14/18 9.75 5.15 4.60 -- 1,271 7.07 -60.3 0.81 RW-12 O&M B 9/10/18 9.75 -- -- -- 644 7.82 -11.7 --
RW-12 O&M B 9/12/18 9.75 5.45 4.30 -- -- -- -- --
RW-12 O&M B 2/13/19 9.75 4.48 5.27 -- 5,670 7.84 -98.9 0.71 RW-12 O&M B 3/11/20 9.75 5.39 4.36 1.07 B 1,784 7.00 -45.0 0.81 RW-8 B 8/12/03 9.85 5.79 4.06 -- -- -- -- --
RW-8 B 8/13/03 9.85 -- -- -- 672 -- 88.2 0.21
RW-8 B 2/1/05 9.85 -- -- -- 476 -- -- --
RW-8 B 3/8/05 9.85 4.88 4.97 -- -- -- -- --
RW-8 B 3/10/05 9.85 -- -- -- 515 -- 26.6 0.56
RW-8 B 6/8/05 9.85 5.45 4.40 4.7 473 -- 36.0 0.25
RW-8 PT ERD B 6/13/05 9.85 5.35 4.50 -- 476 -- 44.8 0.67 RW-8 PT ERD B 6/14/05 9.85 5.37 4.48 -- -- -- 44.3 1.06 RW-8 PT ERD B 6/16/05 9.85 5.35 4.50 -- -- -- 44.0 0.55 RW-8 PT ERD B 6/21/05 9.85 5.41 4.44 5.7 562 -- -84.0 0.77 RW-8 PT ERD B 6/27/05 9.85 5.51 4.34 5.5 512 -- 38.6 0.56 RW-8 PT ERD B 7/5/05 9.85 -- -- -- 515 -- 57.2 0.89
RW-8 PT ERD B 7/12/05 9.85 5.69 4.16 -- 530 -- 79.7 0.57 RW-8 PT ERD B 7/26/05 9.85 5.90 3.95 -- 594 -- -20.0 0.55 RW-8 PT ERD B 7/26/05 9.85 5.52 4.33 -- 643 -- -80.0 0.5 RW-8 PT ERD B 8/2/05 9.85 5.82 4.03 8.0 659 -- -175.5 0.66 RW-8 PT ERD B 8/10/05 9.85 5.74 4.11 -- 627 -- -183.8 0.93 RW-8 PT ERD B 8/15/05 9.85 5.83 4.02 -- 705 -- -267.3 0.07 RW-8 PT ERD B 8/22/05 9.85 5.77 4.08 11 612 -- -184.1 0.25 RW-8 PT ERD B 8/23/05 9.85 5.59 4.26 -- 710 -- -163.0 0.25 Table 6D
Groundwater Elevation Data, Field Measurements and Other Analyses Breezeway Sump
Former Kaiser Aerotech Facilities
San Leandro, California

Page 5 of 7 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
RW-8 PT ERD B 8/29/05 9.85 5.75 4.10 24 690 -- -185.5 0.30 RW-8 PT ERD B 9/6/05 9.85 5.67 4.18 -- 1,097 -- -187.6 0.03 RW-8 PT ERD B 9/12/05 9.85 6.20 3.65 -- 721 -- -241.2 0.15 RW-8 PT ERD B 9/19/05 9.85 5.80 4.05 48 772 -- -229.6 2.04 RW-8 PT ERD B 10/12/05 9.85 7.30 2.55 48 781 -- -282.5 0.19 RW-8 PT ERD B 11/10/05 9.85 6.90 2.95 54 683 -- -243.1 2.41 RW-8 PT ERD B 12/14/05 9.85 5.56 4.29 45 950 -- -166.0 1.46 RW-8 PT ERD B 2/9/06 9.85 4.98 4.87 72 944 -- -64.4 8.63 RW-8 PT ERD B 3/14/06 9.85 4.34 5.51 172 862 -- -203.3 1.74 RW-8 PT ERD B 6/13/06 9.85 5.19 4.66 17 801 6.84 -39.9 1.07 RW-8 PT ERD B 9/21/06 9.85 5.55 4.30 1.8 727 7.35 -149.5 0.08 RW-8 PT ERD B 10/24/06 9.85 6.39 3.46 -- 665 7.42 -87.7 0.13 RW-8 PT ERD B 1/30/07 9.85 6.05 3.80 <0.50 664 7.17 -95.1 1.55 RW-8 PT ERD B 5/10/07 9.85 5.24 4.61 <0.50 719 7.03 -52.0 2.58 RW-8 PT ERD B 8/14/07 9.85 5.48 4.37 3.2 768 7.13 10.2 0.50 RW-8 PT ERD B 11/14/07 9.85 5.76 4.09 -- 690 7.04 -45.8 0.23 RW-8 PT ERD B 2/7/08 9.85 4.80 5.05 1.5 799 7.11 -121.3 0.24 RW-8 PT ERD B 6/11/08 9.85 5.26 4.59 -- 757 -- -- --
RW-8 RDIP B 8/5/08 9.85 5.82 4.03 -- 831 7.33 -244.0 0.12 RW-8 RDIP B 11/10/08 9.85 -- -- -- 811 -- -62.1 2.60
RW-8 RDIP B 2/5/09 9.85 5.46 4.39 8.4 1,641 7.14 -144.0 2.57 RW-8 RDIP B 5/6/09 9.85 5.11 4.74 -- 700 7.36 -113.9 2.77 RW-8 RDIP B 5/20/09 10.25 5.42 4.83 -- 787 -- -- --
RW-8 RDIP B 5/20/09 10.25 -- -- -- 57,101 -- -- --
RW-8 RDIP B 8/6/09 10.25 6.05 4.20 4,800 10,377 6.41 -209.9 2.26 RW-8 RDIP B 10/21/09 10.25 4.31 5.94 -- 6,782 -- -- --
RW-8 RDIP B 2/4/10 10.25 4.63 5.62 -- 4,857 6.73 -173.9 1.10 RW-8 RDIP B 2/9/11 10.25 5.18 5.07 -- 1,472 7.37 -85.6 0.60 RW-8 RDIP B 10/18/11 10.25 5.29 4.96 -- 1,192 7.25 -130.4 0.84 RW-8 RDIP B 10/21/11 10.25 5.15 5.10 -- 1,080 8.50 -178.6 0.82 RW-8 RDIP B 2/7/12 10.25 5.08 5.17 -- 1,097 7.89 -48.1 0.95 RW-8 O&M B 2/12/13 10.25 5.25 5.00 52 1,173 6.97 -8.1 0.83 RW-8 O&M B 7/31/13 10.25 5.09 5.16 -- 892 8.81 2.7 1.41 RW-8 O&M B 7/31/13 10.25 -- -- -- 35,841 6.90 274.9 2.14 RW-8 O&M B 9/24/13 10.25 5.70 4.55 -- 6,449 6.03 -50.3 1.08 RW-8 O&M B 2/26/14 10.25 5.45 4.80 -- 2,196 6.90 -106.2 1.97 RW-8 O&M B 6/11/15 10.25 5.38 4.87 -- 861 6.00 104.6 -- RW-8 O&M B 2/24/16 10.25 5.10 5.15 -- 1,403 6.69 -70.7 1.73 RW-8 O&M B 2/15/17 10.25 5.57 4.68 -- 1,153 7.71 -77.3 0.47 RW-8 O&M B 2/14/18 10.25 5.25 5.00 -- 1,118 7.11 -51.1 0.43 RW-8 O&M B 9/10/18 10.25 5.58 4.67 -- 759 7.38 -40.8 -- RW-8 O&M B 2/13/19 10.25 4.18 6.07 -- 1,121 6.61 -32.4 0.32 RW-8 O&M B 3/11/20 10.25 5.43 4.82 -- 1,069 7.08 -59.8 0.94 UB-6 UB 9/19/07 9.51 5.79 3.72 8.0 1,590 8.34 -179.0 3.42 UB-6 UB 11/14/07 9.51 6.28 3.23 -- 701 7.20 -0.80 0.44
UB-6 UB 2/7/08 9.51 7.71 1.80 -- 699 7.49 -38.4 0.78
UB-6 UB 5/6/08 9.51 6.21 3.30 -- 749 7.34 -- --
UB-6 UB 2/4/09 9.51 5.90 3.61 -- 1,320 7.52 21.7 2.04
UB-6 UB 8/5/09 9.51 5.91 3.60 -- 717 7.18 42.3 6.98
UB-6 UB 10/21/09 9.51 6.66 2.85 -- 686 -- -- --
UB-6 UB 11/4/09 9.51 6.34 3.17 -- 611 8.65 -194.2 0.42
UB-6 UB 2/4/10 9.51 5.12 4.39 2.9 711 7.23 173.7 1.51
UB-6 UB 5/10/10 9.51 5.30 4.21 -- 779 -- -- --
UB-6 UB 8/3/10 9.51 5.70 3.81 -- -- -- -- --
UB-6 UB 8/4/10 9.51 -- -- -- 621 7.30 -73.3 0.22
UB-6 UB 2/8/11 9.51 5.46 4.05 -- 570 7.03 -56.4 0.54
UB-6 UB 10/18/11 9.51 5.60 3.91 0.87 696 7.00 57.1 0.57 UB-6 RDIP UB 10/21/11 9.51 6.30 3.21 -- 52,290 9.99 40.8 2.63 UB-6 RDIP UB 2/7/12 9.51 5.29 4.22 -- 5,266 7.42 -128.7 0.76 Table 6D
Groundwater Elevation Data, Field Measurements and Other Analyses Breezeway Sump
Former Kaiser Aerotech Facilities
San Leandro, California

Page 6 of 7 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
UB-6 O&M UB 2/13/13 9.51 5.59 3.92 170 2,656 7.97 -135.9 0.54 UB-6 O&M UB 9/24/13 9.51 5.84 3.67 -- 6,349 7.00 -106.7 0.62 UB-6 O&M UB 2/26/14 9.51 5.65 3.86 150 3,144 7.41 -182.6 0.75 UB-6 O&M UB 6/9/15 9.51 5.75 3.76 2.3 914 7.68 -181.3 2.49 UB-6 O&M UB 2/24/16 9.51 5.42 4.09 -- 800 6.09 -61.0 1.83 UB-6 O&M UB 2/15/17 9.51 5.44 4.07 1.7 594 7.88 44.4 0.29 UB-6 O&M UB 2/14/18 9.51 6.37 3.14 -- 655 7.26 -118.4 0.36 UB-6 O&M UB 9/10/18 9.51 5.99 3.52 -- 621 7.38 -70.2 -- UB-6 O&M UB 2/14/19 9.51 4.55 4.96 -- 6,856 6.88 -12.4 0.98 UB-6 O&M UB 3/11/20 9.51 5.81 3.70 -- 3,014 7.43 -52.6 0.99 LB-6 LB 9/19/07 9.68 5.10 4.58 2.9 765 8.03 -151.0 0.12 LB-6 LB 11/14/07 9.68 4.90 4.78 -- 730 6.84 90.4 0.66
LB-6 LB 2/7/08 9.68 4.16 5.52 -- 706 7.39 -47.4 0.74
LB-6 LB 5/6/08 9.68 4.99 4.69 -- 736 7.07 -- --
LB-6 LB 2/5/09 9.68 4.86 4.82 -- 1,399 7.10 96.8 1.30
LB-6 LB 8/5/09 9.68 5.17 4.51 -- 727 6.90 16.1 0.37
LB-6 LB 10/21/09 9.68 4.40 5.28 -- 723 -- -- --
LB-6 LB 11/4/09 9.68 4.84 4.84 -- 641 12.98 -404.5 0.21 LB-6 LB 2/4/10 9.68 4.12 5.56 2.7 701 7.04 174.6 2.68
LB-6 LB 5/10/10 9.68 3.57 6.11 -- 769 -- -- --
LB-6 LB 8/3/10 9.68 5.03 4.65 -- -- -- -- --
LB-6 LB 8/4/10 9.68 -- -- -- 614 7.13 -32.7 0.09
LB-6 LB 2/8/11 9.68 4.70 4.98 -- 562 7.01 -43.9 0.58
LB-6 LB 10/18/11 9.68 4.85 4.83 0.89 803 7.02 -79.2 0.34 LB-6 RDIP LB 10/21/11 9.68 5.69 3.99 -- 38,020 9.09 44.7 2.63 LB-6 RDIP LB 2/7/12 9.68 4.79 4.89 -- 2,766 7.62 -145.3 1.22 LB-6 O&M LB 2/13/13 9.68 4.95 4.73 65 1,075 7.74 -69.7 0.89 LB-6 O&M LB 7/31/13 9.68 4.69 4.99 -- 818 8.85 32.3 0.92 LB-6 O&M LB 7/31/13 9.68 -- -- -- 41,995 7.38 264.1 5.15 LB-6 O&M LB 9/24/13 9.68 5.30 4.38 -- 7,473 6.50 -77.5 0.70 LB-6 O&M LB 2/26/14 9.68 5.10 4.58 160 3,459 7.73 -189.7 1.49 LB-6 O&M LB 6/9/15 9.68 5.30 4.38 3.0 801 7.98 -160.3 1.54 LB-6 O&M LB 2/24/16 9.68 4.84 4.84 -- 688 6.09 -1.6 2.03 LB-6 O&M LB 2/14/18 9.68 4.98 4.70 -- 1,091 7.22 -116.5 0.08 LB-6 O&M LB 9/10/18 9.68 5.35 4.33 -- 245 7.49 20.3 --
LB-6 O&M LB 2/14/19 9.68 3.20 6.48 -- 1,279 7.16 -42.2 0.72 LB-6 O&M LB 3/11/20 9.68 5.36 4.32 -- 1,664 7.60 -40.1 1.74 LMW-2 B 9/22/98 9.08 4.64 4.44 -- -- -- -- --
LMW-2 B 9/23/98 9.08 -- -- -- -- -- 113.4 0.94
LMW-2 B 12/9/98 9.08 4.02 5.06 -- -- -- 173.0 5.27
LMW-2 B 3/22/99 9.08 3.71 5.37 -- -- -- -- --
LMW-2 B 6/21/99 9.08 4.60 4.48 -- -- -- -- --
LMW-2 B 9/20/99 9.08 4.76 4.32 -- -- -- -- --
LMW-2 B 12/13/99 9.08 4.38 4.70 -- -- -- -- --
LMW-2 B 3/13/00 9.08 3.28 5.80 -- -- -- -- --
LMW-2 B 9/18/00 9.08 4.61 4.47 -- -- -- -- --
LMW-2 B 3/12/01 9.08 3.81 5.27 -- 684 -- -- --
LMW-2 B 9/24/01 9.08 4.77 4.31 -- -- -- -- --
LMW-2 B 3/26/02 9.08 3.73 5.35 -- -- -- -- --
LMW-2 B 10/3/02 9.08 4.87 4.21 -- 850 -- -- --
LMW-2 B 3/26/03 9.08 4.29 4.79 -- 734 -- -- --
LMW-2 B 3/27/03 9.08 -- -- -- 753 -- -10.2 0.87
LMW-2 B 6/26/03 9.08 4.60 4.48 -- 726 -- 166.9 0.55
LMW-2 B 9/23/03 9.08 4.80 4.28 -- -- -- -- --
LMW-2 B 9/24/03 9.08 -- -- 1.2 762 -- 75.0 0.25
LMW-2 B 12/16/03 9.08 3.96 5.12 -- 670 -- 183.2 0.10
LMW-2 B 3/9/04 9.08 4.00 5.08 -- -- -- -- --
LMW-2 B 3/10/04 9.08 -- -- -- 664 -- 216.2 0.50
Table 6D
Groundwater Elevation Data, Field Measurements and Other Analyses Breezeway Sump
Former Kaiser Aerotech Facilities
San Leandro, California

Page 7 of 7 ends

Page 1 of 4 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
MW-7 A 11/14/96 12.05 6.87 5.18 -- -- -- -- --
MW-7 A 3/20/97 12.05 5.59 6.46 -- -- -- -- --
MW-7 A 6/25/97 12.05 6.67 5.38 -- -- -- -- --
MW-7 A 9/22/97 12.05 6.85 5.20 -- -- -- -- --
MW-7 A 12/18/97 12.05 5.22 6.83 -- -- -- -- --
MW-7 A 3/23/98 12.05 5.69 6.36 -- -- -- -- --
MW-7 A 6/17/98 12.05 6.28 5.77 -- -- -- -- --
MW-7 A 9/22/98 12.05 6.95 5.10 -- -- -- 95.3 1.83
MW-7 A 12/9/98 12.05 6.13 5.92 -- -- -- -- --
MW-7 A 3/22/99 12.05 5.53 6.52 -- -- -- -- --
MW-7 A 6/21/99 12.05 6.83 5.22 -- -- -- -- --
MW-7 A 9/20/99 12.05 7.12 4.93 -- -- -- -- --
MW-7 A 12/13/99 12.05 6.68 5.37 -- -- -- -- --
MW-7 A 12/15/99 12.05 -- -- -- -- -- 168.0 --
MW-7 A 3/10/00 12.05 -- -- -- -- -- 179.0 --
MW-7 PT ISCO Mn A 3/13/00 12.05 4.96 7.09 -- -- -- -- -- MW-7 PT ISCO Mn A 3/27/03 12.05 -- -- -- -- -- 260 --
MW-7 A 4/10/00 12.05 -- -- -- -- -- 81.0 --
MW-7 A 5/15/00 12.05 -- -- -- -- -- 199.0 --
MW-7 A 6/15/00 12.05 -- -- -- -- -- 192 --
MW-7 A 9/18/00 12.05 6.89 5.16 -- -- -- -- --
MW-7 A 3/12/01 12.05 5.75 6.30 -- 531 -- -- --
MW-7 A 9/24/01 12.05 7.00 5.05 -- -- -- -- --
MW-7 A 3/26/02 12.05 5.52 6.53 -- -- -- -- --
MW-7 A 10/3/02 12.05 6.98 5.07 -- 987 -- -- --
MW-7 A 3/26/03 12.05 6.25 5.80 -- 750 -- 9.1 2.06
MW-7 A 6/26/03 12.05 6.62 5.43 -- -- -- -- --
MW-7 A 9/23/03 12.05 6.91 5.14 -- 908 -- -31.0 0.51
MW-7 A 3/9/04 12.05 5.79 6.26 -- 340 -- -108.6 3.36
MW-7 A 9/29/04 12.05 6.82 5.23 -- 766 -- -132.7 1.02
MW-7 A 3/8/05 12.05 5.19 6.86 -- -- -- -- --
MW-7 A 3/9/05 12.05 -- -- -- 313 -- -2.0 1.27
MW-7 A 9/14/05 12.05 6.88 5.17 -- 652 -- -316.6 1.12
MW-7 A 9/14/05 12.05 6.88 5.17 -- 652 -- -316.6 1.12
MW-7 A 3/15/06 12.05 4.60 7.45 -- 208 -- 136.5 4.15
MW-7 A 9/20/06 12.05 6.84 5.21 -- 655 6.59 -1.5 1.12
MW-7 A 1/30/07 12.05 6.34 5.71 -- -- -- -- --
MW-7 A 2/1/07 12.05 6.40 5.65 -- 1,486 8.37 -102.4 7.65 MW-7 A 5/10/07 12.05 6.41 5.64 -- -- -- -- --
MW-7 A 8/15/07 12.05 6.81 5.24 -- 543 6.78 46.1 1.70
MW-7 A 11/13/07 12.05 6.44 5.61 -- -- -- -- --
MW-7 A 2/5/08 12.05 5.11 6.94 -- 487 6.98 16.5 1.97
MW-7 A 5/7/08 12.05 6.54 5.51 -- -- -- -- --
MW-7 A 8/5/08 12.05 6.78 5.27 -- -- -- -- --
MW-7 A 11/6/08 12.05 6.49 5.56 -- -- -- -- --
MW-7 A 2/3/09 12.05 6.49 5.56 -- 735 6.51 -4.6 2.09
MW-7 A 5/6/09 12.05 6.25 5.80 -- 654 6.30 -32.7 0.79
MW-7 A 8/4/09 12.05 6.82 5.23 -- -- -- -- --
MW-7 A 8/24/09 12.05 6.91 5.14 -- -- -- -- --
MW-7 A 11/4/09 12.05 6.48 5.57 -- -- -- -- --
MW-7 A 2/2/10 12.05 5.28 6.77 -- 385 6.52 -165.3 0.53
MW-7 A 8/3/10 12.05 6.67 5.38 -- -- -- -- --
MW-7 A 2/9/11 12.05 6.33 5.72 -- 681 7.72 -87 0.35
MW-7 A 2/7/12 12.05 5.78 6.27 -- -- -- -- --
MW-7 O&M A 2/12/13 12.05 6.54 5.51 -- 358 6.36 -23.2 0.91 MW-7 O&M A 6/11/15 12.05 6.30 5.75 -- 647 6.77 10.7 1.15 MW-7 O&M A 2/23/16 12.05 6.19 5.86 -- -- -- -- --
MW-7 O&M A 2/13/17 12.05 4.55 7.50 -- 236 7.14 -85.9 0.71 MW-7 O&M A 2/12/19 12.05 5.35 6.70 -- 378 6.08 176.4 0.49 Date Monitoring
Well Notes GW Zone
Specific
Conductance TOCNote 1
Table 6E
Groundwater Elevation Data, Field Measurements and Other Analyses Former Oil/Solvent Storage Area
Former Kaiser Aerotech Facilities
San Leandro, California

Page 2 of 4 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
Conductance TOCNote 1
LMW-4 B 9/22/98 14.71 9.52 5.19 -- -- -- 94.5 1.94
LMW-4 B 12/9/98 14.71 8.73 5.98 -- -- -- -- --
LMW-4 B 12/10/98 14.71 -- -- -- -- -- 81.0 6.90
LMW-4 B 3/22/99 14.71 8.09 6.62 -- -- -- -- --
LMW-4 B 6/21/99 14.71 9.42 5.29 -- -- -- -- --
LMW-4 B 9/20/99 14.71 9.72 4.99 -- -- -- -- --
LMW-4 B 12/13/99 14.71 9.25 5.46 -- -- -- -- --
LMW-4 B 12/15/99 14.71 -- -- -- -- -- 81.0 --
LMW-4 PT ISCO Mn B 3/10/00 14.71 -- -- -- -- -- 51.0 -- LMW-4 PT ISCO Mn B 3/13/00 14.71 7.51 7.20 -- -- -- -- -- LMW-4 PT ISCO Mn B 3/27/00 14.71 -- -- -- -- -- 240.0 -- LMW-4 B 6/15/00 14.71 -- -- -- -- -- 136.0 --
LMW-4 B 9/18/00 14.71 9.51 5.20 -- -- -- -- --
LMW-4 B 3/12/01 14.71 8.31 6.40 -- 743 -- -- --
LMW-4 B 9/24/01 14.71 9.02 5.69 -- -- -- -- --
LMW-4 B 3/26/02 14.71 8.07 6.64 -- -- -- -- --
LMW-4 B 10/3/02 14.71 9.72 4.99 -- 888 -- -- --
LMW-4 B 3/26/03 14.71 8.79 5.92 -- 861 -- 61.0 1.20
LMW-4 B 6/26/03 14.71 9.18 5.53 -- -- -- -- --
LMW-4 B 9/23/03 14.71 9.50 5.21 -- 903 -- -- --
LMW-4 B 9/24/03 14.71 -- -- 4.9 -- -- -16 0.51
LMW-4 B 3/9/04 12.13 5.91 6.22 -- 770 -- -91.5 0.40
LMW-4 B 2/1/05 12.13 -- -- -- 627 -- -- --
LMW-4 B 9/20/06 12.13 6.78 5.35 -- -- -- -- --
LMW-4 B 1/30/07 12.13 6.44 5.69 -- -- -- -- --
LMW-4 B 2/1/07 12.13 7.09 5.04 -- 808 7.11 -63.3 0.43
LMW-4 B 2/4/08 12.13 5.27 6.86 -- 870 7.18 -130.1 0.87
LMW-4 B 6/9/08 12.13 6.86 5.27 -- 916 -- -- --
LMW-4 RDIP B 6/10/08 12.13 6.01 6.12 -- 69,847 -- -- -- LMW-4 RDIP B 6/10/08 12.13 6.19 5.94 -- 46,974 -- -- -- LMW-4 RDIP B 8/6/08 12.13 7.68 4.45 9,600 17,863 6.30 -135.2 0.27 LMW-4 RDIP B 11/6/08 12.13 6.95 5.18 -- 14,535 6.11 -162.0 0.30 LMW-4 RDIP B 2/4/09 12.13 7.05 5.08 9,700 15,477 6.35 -153.0 2.80 LMW-4 RDIP B 5/6/09 12.13 6.80 5.33 -- 11,662 6.29 -21.0 0.31 LMW-4 RDIP B 8/24/09 12.13 7.31 4.82 9,300 12,325 6.35 -180.9 0.27 LMW-4 RDIP B 10/19/09 12.13 6.90 5.23 -- 10,379 -- -- -- LMW-4 RDIP B 10/19/09 12.13 6.90 5.23 -- 10,379 -- -- -- LMW-4 RDIP B 10/23/09 12.13 6.31 5.82 -- 10,204 -- -- -- LMW-4 RDIP B 11/4/09 12.13 6.90 5.23 -- 11,164 6.72 -172.7 1.43 LMW-4 RDIP B 2/4/10 12.13 5.98 6.15 7,900 15,543 6.39 -60.8 0.94 LMW-4 RDIP B 5/4/10 12.13 6.70 5.43 -- 11,920 7.12 -206.3 0.84 LMW-4 RDIP B 5/7/10 12.13 6.40 5.73 -- 13,470 -- -- --
LMW-4 RDIP B 8/3/10 12.13 7.05 5.08 -- -- -- -- --
LMW-4 RDIP B 8/4/10 12.13 -- -- 7,900 15,174 7.07 -105.6 0.79 LMW-4 RDIP B 2/9/11 12.13 6.74 5.39 -- 8,683 7.25 -95.6 0.97 LMW-4 RDIP B 2/8/12 12.13 6.91 5.22 -- 6,198 7.02 -91.2 0.18 LMW-4 O&M B 2/12/13 12.13 6.94 5.19 -- 7,391 7.44 -63.4 0.63 LMW-4 O&M B 2/25/14 12.13 6.94 5.19 -- 5,701 7.01 -111.3 1.83 LMW-4 O&M B 6/11/15 12.13 7.28 4.85 -- 5,714 6.92 -116.5 1.18 LMW-4 O&M B 2/23/16 12.13 6.75 5.38 -- 6,309 6.76 -92.5 4.25 LMW-4 O&M B 2/13/17 12.13 4.60 7.53 -- 4,098 7.51 -121.3 0.42 LMW-4 O&M B 2/12/19 12.13 5.58 6.55 -- 4,873 6.89 -109.7 0.68 LMW-8 LB 9/19/07 12.22 6.95 5.27 5.2 893 7.39 24.0 1.08 LMW-8 LB 11/13/07 12.22 6.50 5.72 -- 828 6.58 -25.4 0.14 LMW-8 LB 2/6/08 12.22 5.25 6.97 -- 890 7.18 -135.9 0.73 LMW-8 LB 5/7/08 12.22 5.08 7.14 -- 883 5.91 376.5 2.10
LMW-8 LB 6/9/08 12.22 6.83 5.39 -- 891 -- -- --
LMW-8 LB 6/10/08 12.22 3.71 8.51 -- 916 -- -- --
Table 6E
Groundwater Elevation Data, Field Measurements and Other Analyses Former Oil/Solvent Storage Area
Former Kaiser Aerotech Facilities
San Leandro, California

Page 3 of 4 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
Conductance TOCNote 1
LMW-8 LB 6/10/08 12.22 7.15 5.07 -- 64,389 -- -- --
LMW-8 RDIP LB 8/5/08 12.22 7.24 4.98 17,000 22,300 6.39 -99.5 1.68 LMW-8 RDIP LB 11/6/08 12.22 7.52 4.70 -- 18,811 6.12 -147.0 0.27 LMW-8 RDIP LB 11/6/08 12.22 -- -- <5.0 <5.0 <5.0 -147.0 0.27 LMW-8 RDIP LB 2/3/09 12.22 8.18 4.04 12,000 17,092 6.29 -80.7 2.29 LMW-8 RDIP LB 5/6/09 12.22 6.67 5.55 -- 11,099 6.06 -4.5 0.21 LMW-8 RDIP LB 8/24/09 12.22 8.21 4.01 9,000 11,437 6.25 -223.5 0.61 LMW-8 RDIP LB 11/4/09 12.22 6.73 5.49 -- 10,193 7.03 -213.9 1.76 LMW-8 RDIP LB 2/3/10 12.22 5.76 6.46 10,000 15,902 6.04 -67.0 0.24 LMW-8 RDIP LB 5/4/10 12.22 6.25 5.97 -- 11,364 7.24 -201.8 0.59 LMW-8 RDIP LB 5/7/10 12.22 6.39 5.83 -- 14,735 -- -- -- LMW-8 RDIP LB 8/3/10 12.22 7.85 4.37 4,200 9,607 6.89 -70.3 0.73 LMW-8 RDIP LB 2/9/11 12.22 6.60 5.62 -- 8,484 7.09 -80.1 0.26 LMW-8 RDIP LB 2/8/12 12.22 7.26 4.96 -- 5,644 6.80 -90.9 0.2 LMW-8 O&M LB 2/12/13 12.22 6.92 5.30 -- 6,587 7.38 -43.6 0.68 LMW-8 O&M LB 2/25/14 12.22 7.07 5.15 -- 5,429 6.89 -124.7 1.81 LMW-8 O&M LB 6/11/15 12.22 6.87 5.35 -- 4,700 6.95 -48.2 1.84 LMW-8 O&M LB 2/23/16 12.22 7.25 4.97 -- 5,296 6.67 -78.9 2.28 LMW-8 O&M LB 2/13/17 12.22 6.59 5.63 -- 4,728 7.10 -126.2 0.63 LMW-8 O&M LB 2/13/18 12.22 6.50 5.72 -- 4,106 6.89 -103.5 0.88 LMW-8 O&M LB 2/12/19 12.22 6.03 6.19 -- 4,075 6.72 -114.5 0.33 PZ-1 B 9/22/98 11.37 6.15 5.22 -- -- -- 96.6 1.34
PZ-1 B 12/9/98 11.37 5.06 6.31 -- -- -- -- --
PZ-1 PT ISCO Mn B 3/10/00 11.37 -- -- -- -- -- 210.0 -- PZ-1 PT ISCO Mn B 3/26/03 11.37 5.30 6.07 -- 877 -- 70.6 1.65 PZ-1 B 9/29/04 11.37 6.10 5.27 -- 807 -- -47.4 0.93
PZ-1 B 3/8/05 11.37 4.38 6.99 -- -- -- -- --
PZ-1 B 3/9/05 11.37 -- -- -- 714 -- -10.6 0.17
PZ-1 B 9/14/05 11.37 6.12 5.25 -- 757 -- -335.2 0.82
PZ-1 B 12/15/05 11.37 5.87 5.50 -- 931 -- -39.3 1.64
PZ-1 B 3/15/06 11.37 4.80 6.57 -- 691 -- 18.7 1.65
PZ-1 B 9/20/06 11.37 6.64 4.73 -- 852 7.37 7.7 0.21
PZ-1 B 1/30/07 11.37 5.93 5.44 -- -- -- -- --
PZ-1 B 2/1/07 11.37 6.01 5.36 -- 1,878 9.96 -84.7 3.64
PZ-1 B 8/15/07 11.37 6.29 5.08 -- 865 7.57 -55.4 0.84
PZ-1 B 2/6/08 11.37 5.56 5.81 -- 890 7.25 -124.9 0.39
PZ-1 B 5/7/08 11.37 5.87 5.50 -- -- -- -- --
PZ-1 RDIP B 8/7/08 11.37 6.63 4.74 23 1,278 6.83 -201.0 0.29 PZ-1 RDIP B 2/3/09 11.37 5.87 5.50 16 1,300 6.61 -42.1 1.21 PZ-1 RDIP B 8/5/09 11.37 5.73 5.64 -- 2,836 6.72 -89.4 1.68 PZ-1 RDIP B 2/3/10 11.37 4.38 6.99 -- 4,470 6.28 -127.4 0.73 PZ-1 RDIP B 8/3/10 11.37 6.02 5.35 -- -- -- -- --
PZ-1 RDIP B 8/4/10 11.37 -- -- -- 1,368 6.73 -62.5 1.00 PZ-1 RDIP B 2/9/11 11.37 9.33 2.04 -- 33 7.20 88 3.51
PZ-1 RDIP B 2/7/12 11.37 5.50 5.87 -- -- -- -- --
PZ-1 O&M B 2/12/13 11.37 5.83 5.54 -- -- -- -- --
PZ-1 O&M B 2/25/14 11.37 5.82 5.55 -- -- -- -- --
PZ-1 O&M B 6/11/15 -- -- -- -- -- -- -- --
PZ-1 O&M B 2/24/16 11.37 5.60 5.77 -- -- -- -- --
PZ-1 O&M B 2/15/17 11.37 4.20 7.17 -- 1,997 7.71 -74.9 0.81 PZ-1 O&M B 2/13/18 11.37 5.76 5.61 -- 57 3.88 135.8 1.68 PZ-1 Supp. B 9/26/18 11.37 6.19 5.18 -- -- -- -- --
PZ-1 O&M B 2/12/19 11.37 4.67 6.70 -- -- -- -- --
PZ-1 O&M B 3/10/20 11.37 5.81 5.56 8.26 974 7.08 -17.0 1.63 UB-5 UB 9/18/07 12.29 7.09 5.20 10 1,078 7.20 73.0 0.62 UB-5 UB 11/13/07 12.29 8.91 3.38 -- 1,174 8.33 -27.3 1.40 UB-5 UB 2/6/08 12.29 5.43 6.86 -- 1,121 7.11 -135.6 1.75 UB-5 UB 5/7/08 12.29 6.67 5.62 -- 1,095 5.67 -- --
Table 6E
Groundwater Elevation Data, Field Measurements and Other Analyses Former Oil/Solvent Storage Area
Former Kaiser Aerotech Facilities
San Leandro, California

Page 4 of 4 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
Conductance TOCNote 1
UB-5 UB 6/9/08 12.29 10.94 1.35 -- 1,051 -- -- --
UB-5 UB 6/10/08 12.29 6.66 5.63 -- 1,095 -- -- --
UB-5 UB 6/10/08 12.29 7.04 5.25 -- 1,072 -- -- --
UB-5 UB 8/6/08 12.29 6.50 5.79 -- 1,145 7.00 2.4 0.69
UB-5 UB 11/6/08 12.29 11.55 0.74 -- -- -- -- --
UB-5 UB 11/10/08 12.29 -- -- -- 1,003 -- -39.4 4.99
UB-5 UB 12/2/08 12.29 7.75 4.54 -- 969 -- -58.0 --
UB-5 UB 2/3/09 12.29 6.74 5.55 9.2 1,086 7.15 -41.2 0.91 UB-5 RDIP UB 8/4/09 12.29 7.01 5.28 4.0 1,063 7.19 -100.8 0.67 UB-5 RDIP UB 10/19/09 12.29 6.93 5.36 -- 869 -- -- --
UB-5 RDIP UB 10/23/09 12.29 5.35 6.94 -- 55,412 -- -- -- UB-5 RDIP UB 11/4/09 12.29 6.85 5.44 -- 14,529 6.38 -241.3 1.92 UB-5 RDIP UB 2/3/10 12.29 5.78 6.51 -- 15,742 6.27 -110.4 0.95 UB-5 RDIP UB 5/12/10 12.29 6.42 5.87 -- 10,440 -- -- -- UB-5 RDIP UB 8/3/10 12.29 6.89 5.40 5,200 9,493 6.65 -19.7 0.71 UB-5 RDIP UB 2/9/11 12.29 6.49 5.80 -- 15,445 6.68 -50.8 0.27 UB-5 RDIP UB 2/8/12 12.29 6.81 5.48 -- 10,959 6.75 -75.8 1.66 UB-5 O&M UB 2/12/13 12.29 7.05 5.24 -- 8,896 7.73 -55.4 0.78 UB-5 O&M UB 2/25/14 12.29 7.02 5.27 -- 6,692 7.08 -149.8 1.97 UB-5 O&M UB 6/11/15 12.29 7.00 5.29 -- 4,860 7.99 -161.0 2.58 UB-5 O&M UB 2/23/16 12.29 6.51 5.78 -- 7,568 6.82 -101.6 3.02 UB-5 O&M UB 2/14/17 12.29 4.81 7.48 -- 3,830 7.48 -52.9 0.74 UB-5 O&M UB 2/13/18 12.29 6.45 5.84 -- 2,774 7.15 56.4 0.81 UB-5 O&M UB 2/12/19 12.29 5.62 6.67 -- 6,691 7.29 -137.2 0.32 LB-5 LB 9/18/07 12.15 7.03 5.12 4.8 823.1 6.75 73.4 0.83 LB-5 LB 11/13/07 12.15 6.51 5.64 -- 856 7.98 -20.3 0.25 LB-5 LB 2/6/08 12.15 5.31 6.84 -- 838 7.23 -123.4 1.13
LB-5 LB 5/7/08 12.15 6.50 5.65 -- 827 4.57 -- --
LB-5 LB 6/9/08 12.15 6.91 5.24 -- 833 -- -- --
LB-5 LB 6/10/08 12.15 5.97 6.18 -- 836 -- -- --
LB-5 LB 6/10/08 12.15 6.01 6.14 -- 867 -- -- --
LB-5 LB 8/5/08 12.15 6.77 5.38 -- 877 7.02 -14.6 3.56
LB-5 LB 11/6/08 12.15 6.17 5.98 -- -- -- -- --
LB-5 LB 11/10/08 12.15 -- -- -- 847 -- -26.8 3.03
LB-5 LB 12/2/08 12.15 6.98 5.17 -- 782 -- -- --
LB-5 LB 2/3/09 12.15 6.49 5.66 4.8 918 7.25 -53.5 0.78
LB-5 RDIP LB 8/4/09 12.15 6.90 5.25 2.6 1,035 7.27 -110.5 8.73 LB-5 RDIP LB 10/19/09 12.15 6.42 5.73 -- 781 -- -- --
LB-5 RDIP LB 10/22/09 12.15 6.52 5.63 -- 53,980 -- -- -- LB-5 RDIP LB 11/4/09 12.15 7.31 4.84 -- 19,075 6.91 -179.1 2.56 LB-5 RDIP LB 2/3/10 12.15 5.72 6.43 -- 13,526 6.06 -90.4 0.40 LB-5 RDIP LB 5/12/10 12.15 6.30 5.85 -- 5,047 -- -- --
LB-5 RDIP LB 8/3/10 12.15 7.86 4.29 3,400 7,618 6.37 -27.9 0.85 LB-5 RDIP LB 2/9/11 12.15 8.32 3.83 -- 5,700 7.21 -77.7 0.42 LB-5 RDIP LB 2/8/12 12.15 7.91 4.24 -- 5,017 6.77 -94.1 0.48 LB-5 O&M LB 2/12/13 12.15 6.64 5.51 -- 4,784 7.01 -11.7 0.92 LB-5 O&M LB 2/25/14 12.15 6.90 5.25 -- 3,677 6.78 -97.3 1.79 LB-5 O&M LB 6/11/15 12.15 6.80 5.35 -- 2,963 7.97 -204.7 3.48 LB-5 O&M LB 2/23/16 12.15 6.25 5.90 -- 744 6.33 64.5 3.63 LB-5 O&M LB 2/14/17 12.15 4.78 7.37 -- 2,904 7.11 64.8 0.51 LB-5 O&M LB 2/13/18 12.15 6.40 5.75 -- 1,869 6.64 30.3 0.97 LB-5 O&M LB 2/12/19 12.15 5.42 6.73 -- 3,142 6.76 -121.4 0.49 LB-5 O&M LB 3/10/20 12.15 6.74 5.41 -- 1,352 7.55 43.4 2.08 Table 6F
Groundwater Elevation Data, Field Measurements and Other Analyses Receiving Dock
Former Kaiser Aerotech Facilities
San Leandro, California

Page 1 of 3 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
MW-1 A 11/14/96 11.50 5.96 5.54 -- -- -- -- --
MW-1 A 3/20/97 11.50 5.26 6.24 -- -- -- -- --
MW-1 A 6/25/97 11.50 5.75 5.75 -- -- -- -- --
MW-1 A 9/22/97 11.50 5.98 5.52 -- -- -- -- --
MW-1 A 12/18/97 11.50 3.89 7.61 -- -- -- -- --
MW-1 A 3/23/98 11.50 4.41 7.09 -- -- -- -- --
MW-1 A 6/17/98 11.50 5.28 6.22 -- -- -- -- --
MW-1 A 9/22/98 11.50 6.08 5.42 -- -- -- -- --
MW-1 A 9/23/98 11.50 -- -- -- -- -- 27.5 2.94
MW-1 A 12/9/98 11.50 4.94 6.56 -- -- -- 147 6.19
MW-1 A 3/22/99 11.50 4.45 7.05 -- -- -- -- --
MW-1 A 6/21/99 11.50 5.93 5.57 -- -- -- -- --
MW-1 A 9/20/99 11.50 6.27 5.23 -- -- -- -- --
MW-1 A 12/13/99 11.50 5.73 5.77 -- -- -- -- --
MW-1 A 3/13/00 11.50 3.79 7.71 -- -- -- -- --
MW-1 A 9/18/00 11.50 6.04 5.46 -- -- -- -- --
MW-1 A 3/12/01 11.50 4.59 6.91 -- 737 -- -- --
MW-1 A 9/24/01 11.50 6.16 5.34 -- -- -- -- --
MW-1 A 3/26/02 11.50 4.43 7.07 -- -- -- -- --
MW-1 A 10/3/02 11.50 6.07 5.43 -- 929 -- -- --
MW-1 A 3/26/03 11.50 5.15 6.35 -- 476 -- -43.9 1.79
MW-1 A 6/26/03 11.50 5.66 5.84 -- -- -- -- --
MW-1 A 9/23/03 11.50 5.99 5.51 -- -- -- -- --
MW-1 A 12/16/03 11.50 4.76 6.74 -- -- -- -- --
MW-1 A 3/9/04 11.50 4.63 6.87 -- 630 -- 40.0 0.34
MW-1 A 5/20/04 11.50 5.69 5.81 -- -- -- -- --
MW-1 A 9/29/04 11.50 5.93 5.57 -- -- -- -- --
MW-1 A 12/8/04 11.50 4.08 7.42 -- -- -- -- --
MW-1 A 3/8/05 11.50 3.87 7.63 -- -- -- -- --
MW-1 A 6/14/05 11.50 5.23 6.27 -- -- -- -- --
MW-1 A 9/14/05 11.50 5.80 5.70 -- -- -- -- --
MW-1 A 12/15/05 11.50 5.41 6.09 -- 867 -- -27.5 1.59
MW-1 A 3/15/06 11.50 3.75 7.75 -- 554 -- 92.6 4.42
MW-1 A 6/13/06 11.50 5.51 5.99 -- -- -- -- --
MW-1 A 9/20/06 11.50 4.75 6.75 -- -- -- -- --
MW-1 A 1/30/07 11.50 5.25 6.25 -- -- -- -- --
MW-1 A 2/1/07 11.50 5.32 6.18 -- 1,704 10.66 76.2 4.79
MW-1 A 5/8/07 11.50 5.31 6.19 -- -- -- -- --
MW-1 A 8/14/07 11.50 5.85 5.65 -- -- -- -- --
MW-1 A 11/13/07 11.50 5.40 6.10 -- -- -- -- --
MW-1 A 2/4/08 11.50 3.39 8.11 -- 677 7.30 -38.2 1.63
MW-1 A 5/7/08 11.50 5.68 5.82 -- -- -- -- --
MW-1 A 8/5/08 11.50 5.74 5.76 -- -- -- -- --
MW-1 A 11/6/08 11.50 5.25 6.25 -- -- -- -- --
MW-1 A 2/3/09 11.50 5.39 6.11 -- 1,556 6.94 -25.9 1.26
MW-1 A 5/6/09 11.50 5.11 6.39 -- -- -- -- --
MW-1 A 5/20/09 11.50 5.42 6.08 -- 670 -- -- --
MW-1 A 5/20/09 11.50 5.02 6.48 -- 898 -- -- --
MW-1 A 6/3/09 11.50 5.49 6.01 -- 861 -- -- --
MW-1 A 6/3/09 11.50 5.50 6.00 -- 916 -- -- --
MW-1 A 8/4/09 11.50 5.90 5.60 -- -- -- -- --
MW-1 A 11/4/09 11.50 5.46 6.04 -- -- -- -- --
MW-1 A 2/2/10 11.50 3.84 7.66 -- 724 6.73 34.9 0.32
MW-1 A 5/4/10 11.50 4.95 6.55 -- -- -- -- --
MW-1 A 8/3/10 11.50 5.66 5.84 -- -- -- -- --
MW-1 A 2/8/11 11.50 5.22 6.28 -- 843 6.82 -116 0.13
MW-1 A 2/8/12 11.50 5.04 6.46 -- -- -- -- --
MW-1 O&M A 2/12/13 11.50 5.41 6.09 -- -- -- -- --
MW-1 O&M A 2/25/14 11.50 5.49 6.01 -- -- -- -- --
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Table 6F
Groundwater Elevation Data, Field Measurements and Other Analyses Receiving Dock
Former Kaiser Aerotech Facilities
San Leandro, California

Page 2 of 3 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
MW-1 O&M A 6/9/15 11.50 5.96 5.54 -- -- -- -- --
MW-1 O&M A 2/23/16 11.50 5.05 6.45 -- -- -- -- --
MW-1 O&M A 2/13/17 11.50 3.10 8.40 -- -- -- -- --
MW-1 O&M A 2/13/18 11.50 5.30 6.20 -- -- -- -- --
MW-1 O&M A 2/11/19 11.50 3.85 7.65 -- -- -- -- --
MW-1 O&M A 3/10/20 11.50 5.60 5.90 -- -- -- -- --
LMW-1 UB 9/22/98 11.12 5.69 5.43 -- -- -- -- --
LMW-1 UB 9/23/98 11.12 -- -- -- -- -- 139.3 3.18
LMW-1 UB 12/9/98 11.12 4.85 6.27 -- -- -- -- --
LMW-1 UB 12/10/98 11.12 -- -- -- -- -- 132.0 4.93
LMW-1 UB 3/22/99 11.12 4.25 6.87 -- -- -- -- --
LMW-1 UB 6/21/99 11.12 4.53 6.59 -- -- -- -- --
LMW-1 UB 9/20/99 11.12 5.86 5.26 -- -- -- -- --
LMW-1 UB 12/13/99 11.12 5.36 5.76 -- -- -- -- --
LMW-1 UB 3/13/00 11.12 3.63 7.49 -- -- -- -- --
LMW-1 UB 9/18/00 11.12 5.68 5.44 -- -- -- -- --
LMW-1 UB 3/12/01 11.12 4.39 6.73 -- 743 -- -- --
LMW-1 UB 9/24/01 11.12 5.75 5.37 -- -- -- -- --
LMW-1 UB 3/26/02 11.12 4.29 6.83 -- -- -- -- --
LMW-1 UB 10/3/02 11.12 5.75 5.37 -- 930 -- -- --
LMW-1 UB 3/26/03 11.12 4.94 6.18 -- 822 -- -34.4 9.06
LMW-1 UB 6/26/03 11.12 5.37 5.75 -- 783 -- 150.6 1.71
LMW-1 UB 9/23/03 11.12 5.71 5.41 -- 835 -- 8.0 3.28
LMW-1 UB 12/16/03 11.12 4.94 6.18 -- -- -- -- --
LMW-1 UB 3/9/04 11.12 4.48 6.64 -- 677 -- 43.0 1.05
LMW-1 UB 5/20/04 11.12 5.41 5.71 -- -- -- -- --
LMW-1 UB 9/29/04 11.12 5.61 5.51 -- 515 -- 51.8 1.57
LMW-1 UB 12/8/04 11.12 4.54 6.58 -- -- -- -- --
LMW-1 UB 3/8/05 11.12 3.79 7.33 -- 440 -- -34.6 2.17
LMW-1 UB 6/14/05 11.12 4.93 6.19 -- -- -- -- --
LMW-1 UB 9/14/05 11.12 5.65 5.47 -- 504 -- -179.3 3.96
LMW-1 UB 12/14/05 11.12 4.79 6.33 -- -- -- -- --
LMW-1 UB 3/15/06 11.12 3.90 7.22 -- 572 -- 113.1 3.02
LMW-1 UB 6/13/06 11.12 4.02 7.10 -- -- -- -- --
LMW-1 UB 9/20/06 11.12 5.55 5.57 -- 758 7.79 -186.0 0.41 LMW-1 UB 2/1/07 11.12 5.09 6.03 -- 1,536 9.98 -135.0 5.38 LMW-1 UB 5/10/07 11.12 5.20 5.92 -- 694 -- -- --
LMW-1 UB 8/14/07 11.12 5.47 5.65 -- 983 7.40 -40.0 4.57 LMW-1 UB 2/4/08 11.12 3.75 7.37 -- 760 7.82 -43.3 5.76
LMW-1 UB 5/7/08 11.12 5.69 5.43 -- -- -- -- --
LMW-1 UB 8/5/08 11.12 5.51 5.61 -- -- -- -- --
LMW-1 UB 11/6/08 11.12 5.09 6.03 -- -- -- -- --
LMW-1 UB 2/3/09 11.12 5.19 5.93 -- 1,386 7.87 -31.4 3.87 LMW-1 UB 5/6/09 11.12 4.94 6.18 -- -- -- -- --
LMW-1 RDIP UB 5/20/09 11.19 6.72 4.47 -- 785 -- -- --
LMW-1 RDIP UB 5/20/09 11.19 0.00 11.19 -- 56,823 -- -- -- LMW-1 RDIP UB 6/3/09 11.19 4.51 6.68 -- 42950 -- -- --
LMW-1 RDIP UB 6/3/09 11.19 1.45 9.74 -- 43,100 -- -- -- LMW-1 RDIP UB 8/6/09 11.19 5.28 5.91 18,000 28,708 6.69 -102.2 1.12 LMW-1 RDIP UB 11/4/09 11.19 5.45 5.74 -- 13,583 6.44 -285.3 1.25 LMW-1 RDIP UB 2/3/10 11.19 4.69 6.50 -- 14,916 6.40 -85.0 0.91 LMW-1 RDIP UB 5/4/10 11.19 5.20 5.99 -- -- -- -- --
LMW-1 RDIP UB 8/3/10 11.19 5.60 5.59 -- -- -- -- --
LMW-1 RDIP UB 8/4/10 11.19 -- -- -- 10,119 7.70 -50.1 3.19 LMW-1 RDIP UB 2/9/11 11.19 6.23 4.96 -- 15,997 7.01 -58.4 0.44 LMW-1 RDIP UB 2/8/12 11.19 5.29 5.90 -- 6,174 7.12 -91.7 0.63 LMW-1 O&M UB 2/12/13 11.19 5.05 6.14 -- 4,525 6.99 -64.8 0.83 LMW-1 O&M UB 2/25/14 11.19 5.21 5.98 -- -- -- -- --
Table 6F
Groundwater Elevation Data, Field Measurements and Other Analyses Receiving Dock
Former Kaiser Aerotech Facilities
San Leandro, California

Page 3 of 3 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
LMW-1 O&M UB 6/9/15 11.19 5.66 5.53 -- 1,870 6.73 170.9 -- LMW-1 O&M UB 2/23/16 11.19 4.85 6.34 -- 1,671 7.52 -5.7 0.74 LMW-1 O&M UB 2/13/17 11.19 2.85 8.34 -- 1,014 7.10 156.3 0.16 LMW-1 O&M UB 2/13/18 11.19 4.80 6.39 -- -- -- -- --
LMW-1 O&M UB 2/11/19 11.19 3.99 7.20 -- 1,196 7.76 39.2 2.37 LMW-1 O&M UB 3/10/20 11.19 5.45 5.74 -- -- -- -- --
Table 6G
Groundwater Elevation Data, Field Measurements and Other Analyses Railroad Western Boundary
Former Kaiser Aerotech Facilities
San Leandro, California

Page 1 of 5 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
MW-18 A 9/22/98 8.18 5.16 3.02 -- -- -- -- --
MW-18 A 9/23/98 8.18 -- -- -- -- -- 99.3 2.69
MW-18 A 12/9/98 8.18 5.03 3.15 -- -- -- -- --
MW-18 A 12/10/98 8.18 -- -- -- -- -- 176.0 3.54
MW-18 A 3/22/99 8.18 5.04 3.14 -- -- -- -- --
MW-18 A 6/21/99 8.18 5.16 3.02 -- -- -- -- --
MW-18 A 9/20/99 8.18 5.14 3.04 -- -- -- -- --
MW-18 A 12/13/99 8.18 5.10 3.08 -- -- -- -- --
MW-18 A 3/13/00 8.18 5.04 3.14 -- -- -- -- --
MW-18 A 9/18/00 8.18 5.13 3.05 -- -- -- -- --
MW-18 A 3/12/01 8.18 5.07 3.11 -- 506 -- -- --
MW-18 A 9/24/01 8.18 5.15 3.03 -- -- -- -- --
MW-18 A 3/26/02 8.18 -- -- -- -- -- -- --
MW-18 A 10/3/02 8.18 5.18 3.00 -- 848 -- -- --
MW-18 A 3/26/03 8.18 5.13 3.05 -- 477 -- -20.5 0.98
MW-18 A 6/26/03 8.18 5.17 3.01 -- 561 -- 167.3 0.60
MW-18 A 9/23/03 8.18 5.17 3.01 -- 700 -- -233.3 0.71
MW-18 A 12/16/03 8.18 5.00 3.18 -- -- -- -- --
MW-18 A 3/9/04 8.18 4.95 3.23 -- -- -- -- --
MW-18 A 3/10/04 8.18 -- -- -- 435 -- -54.2 0.82
MW-18 A 5/20/04 8.18 5.23 2.95 -- -- -- -- --
MW-18 A 9/29/04 8.18 5.18 3.00 -- 704 -- -66.2 0.32
MW-18 A 12/9/04 8.18 3.30 4.88 -- -- -- -- --
MW-18 A 3/8/05 8.18 5.18 3.00 -- 270 -- -38.1 1.10
MW-18 A 6/14/05 8.18 5.19 2.99 -- 399 -- -66.5 0.48
MW-18 A 9/14/05 8.18 5.18 3.00 -- 554 -- 430 1.34
MW-18 A 12/14/05 8.18 5.20 2.98 -- 523 -- -30.7 1.88
MW-18 A 3/15/06 8.18 4.70 3.48 -- 447 -- -100.6 4.73
MW-18 A 6/14/06 8.18 5.20 2.98 -- 569 7.49 -63.5 1.71
MW-18 A 9/20/06 8.18 5.23 2.95 -- 624 7.49 -24.6 0.38
MW-18 A 2/1/07 8.18 5.08 3.10 -- 413 7.56 -26.7 0.71
MW-18 A 5/9/07 8.18 5.18 3.00 -- 559 7.00 265.9 4.23
MW-18 A 8/14/07 8.18 5.22 2.96 -- 702 7.40 -20.8 0.47
MW-18 A 11/14/07 8.18 5.18 3.00 -- -- -- -- --
MW-18 A 2/6/08 8.18 5.15 3.03 -- 498 7.83 -38.8 1.72
MW-18 A 6/13/08 8.18 5.21 2.97 -- -- -- -- --
MW-18 A 8/6/08 8.18 5.21 2.97 -- 738 7.41 -127.0 0.87
MW-18 A 9/30/08 8.18 5.22 2.96 -- 720 -- -- --
MW-18 A 2/4/09 8.18 5.13 3.05 2.8 1,103 7.44 -72.5 1.03 MW-18 A 3/18/09 8.18 5.09 3.09 -- 533 -- -- --
MW-18 A 5/6/09 8.18 5.06 3.12 -- -- -- -- --
MW-18 A 8/4/09 8.18 5.08 3.10 4.2 886 7.45 -67.1 2.38
MW-18 A 11/4/09 8.18 5.18 3.00 -- -- 7.51 -- --
MW-18 A 11/17/09 8.18 5.13 3.05 -- 658 -- -- --
MW-18 A 11/18/09 8.18 5.10 3.08 -- 618 -- -- --
MW-18 A 2/4/10 8.18 5.06 3.12 -- 519 7.31 166.4 0.51
MW-18 A 5/4/10 8.18 5.20 2.98 -- -- -- -- --
MW-18 A 5/6/10 8.18 5.10 3.08 -- 574 -- -- --
MW-18 A 5/18/10 8.18 5.20 2.98 -- 887 -- -- --
MW-18 RDIP A 5/18/10 8.18 4.80 3.38 -- 59,435 -- -- --
MW-18 RDIP A 8/3/10 8.18 5.29 2.89 -- 3,198 6.28 -95.2 0.04 MW-18 RDIP A 2/9/11 8.18 5.23 2.95 -- 3,162 7.36 -77.5 0.53 MW-18 RDIP A 2/8/12 8.18 5.15 3.03 -- 2,058 8.20 -161.6 0.33 MW-18 O&M A 2/14/13 8.18 5.22 2.96 -- 1,419 7.93 -51.4 0.74 MW-18 O&M A 2/25/14 8.18 5.31 2.87 -- 1,069 7.36 -118.1 1.40 MW-18 O&M A 6/11/15 8.18 5.24 2.94 3.2 784 8.01 -80.2 0.18 MW-18 O&M A 2/23/16 8.18 5.31 2.87 -- 991 7.07 -47.6 4.06 MW-18 O&M A 2/14/17 8.18 5.30 2.88 2.0 844 7.12 -20.3 0.83 MW-18 O&M A 2/15/18 8.18 5.45 2.73 -- 720 7.00 -20.9 1.01 Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Table 6G
Groundwater Elevation Data, Field Measurements and Other Analyses Railroad Western Boundary
Former Kaiser Aerotech Facilities
San Leandro, California

Page 2 of 5 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
MW-18 O&M A 9/11/18 8.18 5.40 2.78 -- 869 4.72 -42.2 -- MW-18 O&M A 2/12/19 8.18 5.12 3.06 -- 5,071 7.94 -47.6 0.13 MW-18 O&M A 3/11/20 8.18 5.33 2.85 -- 2,113 7.59 -55.3 0.55 MW-28 A 9/19/07 8.04 4.92 3.12 22 877.1 7.18 129.0 1.33 MW-28 A 11/14/07 8.04 4.73 3.31 -- 715 7.88 -5.7 1.69
MW-28 A 2/6/08 8.04 4.83 3.21 -- 642 7.34 22.4 0.98
MW-28 A 5/7/08 8.04 5.02 3.02 -- 575 7.39 -5.8 0.98
MW-28 A 6/13/08 8.04 5.01 3.03 -- 649 -- -- --
MW-28 RDIP A 8/6/08 8.04 4.93 3.11 8.6 706 7.54 -173.0 2.21 MW-28 RDIP A 9/30/08 8.04 4.94 3.10 -- 602 -- -- --
MW-28 RDIP A 10/1/08 8.04 3.80 4.24 -- 667 -- -- --
MW-28 RDIP A 11/6/08 8.04 4.90 3.14 150 694 7.26 -76.0 3.18 MW-28 RDIP A 12/2/08 8.04 4.89 3.15 -- 661 -- -122.3 -- MW-28 RDIP A 2/4/09 8.04 4.79 3.25 8.2 1,226 7.45 -1.6 1.37 MW-28 RDIP A 5/5/09 8.04 3.91 4.13 3.1 522 7.53 -29.0 2.01 MW-28 RDIP A 5/6/09 8.04 4.68 3.36 -- 551 7.52 135.7 7.54 MW-28 RDIP A 8/4/09 8.04 4.93 3.11 3.5 693 7.28 -34.6 6.07 MW-28 RDIP A 11/4/09 8.04 4.88 3.16 2.8 648 6.65 -24.8 0.58 MW-28 RDIP A 11/17/09 8.04 4.89 3.15 -- 675 -- -- --
MW-28 RDIP A 11/18/09 8.04 2.86 5.18 -- 723 -- -- --
MW-28 RDIP A 2/2/10 8.04 4.75 3.29 2,800 6,491 6.55 -104.8 2.10 MW-28 RDIP A 5/4/10 8.04 4.90 3.14 -- -- -- -- --
MW-28 RDIP A 5/6/10 8.04 4.73 3.31 -- 2,059 -- -- --
MW-28 RDIP A 5/18/10 8.04 5.04 3.00 -- 1,929 -- -- --
MW-28 RDIP A 5/18/10 8.04 4.90 3.14 -- 61,698 -- -- --
MW-28 RDIP A 8/3/10 8.04 5.18 2.86 -- 16,001 6.26 -112.1 0.88 MW-28 RDIP A 2/9/11 8.04 4.99 3.05 -- 12,631 7.13 -86.8 0.31 MW-28 RDIP A 2/8/12 8.04 4.85 3.19 -- 3,255 7.99 -152.9 0.35 MW-28 O&M A 2/14/13 8.04 4.98 3.06 -- 2,000 7.30 -24.3 0.36 MW-28 O&M A 2/25/14 8.04 5.06 2.98 -- 1,834 6.91 -135.1 1.34 MW-28 O&M A 6/11/15 8.04 4.84 3.20 20.8 565 7.97 -178.8 0.11 MW-28 O&M A 2/23/16 8.04 4.98 3.06 -- 1,809 6.69 -134.6 4.31 MW-28 O&M A 2/14/17 8.04 5.00 3.04 -- 2,778 7.13 -78.6 0.42 MW-28 O&M A 2/15/18 8.04 5.08 2.96 -- 1,222 7.28 -23.4 0.63 MW-28 O&M A 9/11/18 8.04 5.22 2.82 -- 1,617 7.39 -117.3 -- MW-28 O&M A 2/12/19 8.04 5.85 2.19 -- 11,780 7.58 -94.2 0.21 MW-28 O&M A 3/11/20 8.04 5.15 2.89 -- 5,807 7.78 -51.7 0.72 MW-27 UB 9/20/06 8.14 5.14 3.00 -- 724 7.41 45.0 1.99
MW-27 UB 2/1/07 8.14 5.03 3.11 -- 641 7.46 -42.3 0.21
MW-27 UB 5/9/07 8.14 4.95 3.19 -- 665 7.36 149.3 1.77
MW-27 UB 8/14/07 8.14 5.06 3.08 -- 819 7.36 -42.2 0.25
MW-27 UB 11/14/07 8.14 5.10 3.04 -- 785 7.31 8.2 1.23
MW-27 UB 2/6/08 8.14 4.91 3.23 -- 682 7.52 -63.6 0.46
MW-27 UB 6/13/08 8.14 5.21 2.93 -- 791 -- -- --
MW-27 RDIP UB 6/13/08 8.14 5.79 2.35 -- 68,578 -- -- -- MW-27 RDIP UB 8/6/08 8.26 5.12 3.14 6,100 12,212 6.50 -293.0 0.38 MW-27 RDIP UB 9/30/08 8.14 5.24 2.90 -- 4,662 -- -- --
MW-27 RDIP UB 9/30/08 8.14 5.51 2.63 -- 49,858 -- -- -- MW-27 RDIP UB 11/6/08 8.26 5.21 3.05 27,000 29,747 6.38 -240.0 1.87 MW-27 RDIP UB 12/2/08 8.26 5.31 2.95 -- 19,185 -- -261.1 -- MW-27 RDIP UB 2/4/09 8.26 5.24 3.02 8,800 34,589 6.51 -199.3 1.06 MW-27 RDIP UB 3/18/09 8.26 5.06 3.20 -- 9,504 -- -- --
MW-27 RDIP UB 5/6/09 8.26 4.96 3.30 -- -- -- -- --
MW-27 RDIP UB 8/4/09 8.26 5.48 2.78 2,900 9,901 7.07 -133.4 1.17 MW-27 RDIP UB 11/17/09 8.26 4.41 3.85 -- 7,659 -- -- -- MW-27 RDIP UB 11/18/09 8.26 4.27 3.99 -- 9,930 -- -- -- MW-27 RDIP UB 2/3/10 8.26 5.31 2.95 5,200 14,518 6.65 -118.4 2.77 MW-27 RDIP UB 5/4/10 8.26 5.22 3.04 -- -- -- -- --
MW-27 RDIP UB 5/6/10 8.26 5.27 2.99 -- 16,531 -- -- --
Table 6G
Groundwater Elevation Data, Field Measurements and Other Analyses Railroad Western Boundary
Former Kaiser Aerotech Facilities
San Leandro, California

Page 3 of 5 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
MW-27 RDIP UB 5/18/10 8.26 5.20 3.06 -- 1,520 -- -- --
MW-27 RDIP UB 5/18/10 8.26 4.17 4.09 -- 4,948 -- -- --
MW-27 RDIP UB 8/3/10 8.26 5.30 2.96 -- 12,290 6.61 -153.6 0.12 MW-27 RDIP UB 2/9/11 8.26 5.02 3.24 -- 18,515 7.38 -117.9 0.30 MW-27 RDIP UB 2/8/12 8.26 5.45 2.81 -- 15,348 7.84 -192.3 0.79 MW-27 O&M UB 2/14/13 8.26 5.35 2.91 -- 10,918 7.50 -17.5 0.82 MW-27 O&M UB 2/25/14 8.26 5.40 2.86 -- 10,137 7.33 -162.3 1.89 MW-27 O&M UB 6/11/15 8.26 5.27 2.99 -- 8,653 7.93 -160.2 0.09 MW-27 O&M UB 2/23/16 8.26 5.14 3.12 -- 7,587 6.98 -117.8 4.14 MW-27 O&M UB 2/14/17 8.26 4.93 3.33 -- 4,999 6.92 -131 0.63 MW-27 O&M UB 2/15/18 8.26 5.39 2.87 -- 3,376 7.55 -117.3 1.12 MW-27 O&M UB 2/12/19 8.26 5.08 3.18 -- 4,842 8.04 -117.5 0.69 MW-27 O&M UB 3/11/20 8.26 5.29 2.97 -- 3,575 7.99 -52.2 0.88 LMW-9 UB 9/19/07 7.97 4.88 3.09 5.6 686.7 7.43 164.0 1.38 LMW-9 UB 11/14/07 7.97 4.91 3.06 -- 690 7.77 -24.7 1.57 LMW-9 UB 2/6/08 7.97 4.84 3.13 -- 651 7.38 -8.4 0.96
LMW-9 UB 5/7/08 7.97 5.13 2.84 -- 668 7.47 -14.5 0.79
LMW-9 UB 6/13/08 7.97 4.94 3.03 -- 683 -- -- --
LMW-9 RDIP UB 8/7/08 7.97 4.87 3.10 4.7 703 7.74 -239.0 0.30 LMW-9 RDIP UB 9/30/08 7.97 4.89 3.08 -- 610 -- -- --
LMW-9 RDIP UB 10/1/08 7.97 3.91 4.06 -- 679 -- -- --
LMW-9 RDIP UB 11/6/08 7.97 4.81 3.16 5.5 662 7.24 -25.4 1.87 LMW-9 RDIP UB 12/2/08 7.97 4.91 3.06 -- 622 -- -111.5 -- LMW-9 RDIP UB 2/4/09 7.97 4.83 3.14 15 1,161 7.48 -15.3 1.27 LMW-9 RDIP UB 3/18/09 7.97 4.85 3.12 -- 496 -- -- --
LMW-9 RDIP UB 5/5/09 7.97 3.74 4.23 3.2 518 7.48 -54.0 2.05 LMW-9 RDIP UB 5/6/09 7.97 4.58 3.39 -- 145 7.68 127.4 3.22 LMW-9 RDIP UB 8/4/09 7.97 4.87 3.10 4.3 658 7.34 -20.2 5.62 LMW-9 RDIP UB 11/4/09 7.97 4.82 3.15 2.8 635 7.53 -132.3 0.36 LMW-9 RDIP UB 11/18/09 7.97 4.95 3.02 -- 63,329 -- -- -- LMW-9 RDIP UB 2/3/10 7.97 4.95 3.02 6,800 13,194 6.27 -151.3 0.62 LMW-9 RDIP UB 5/4/10 7.97 4.91 3.06 -- 1,680 6.75 -277.4 0.37 LMW-9 RDIP UB 5/18/10 7.97 4.95 3.02 -- 6,121 -- -- --
LMW-9 RDIP UB 5/18/10 7.97 4.04 3.93 -- 6,625 -- -- --
LMW-9 RDIP UB 8/3/10 7.97 5.01 2.96 -- 13,595 6.36 -143.4 0.04 LMW-9 RDIP UB 2/9/11 7.97 5.23 2.74 -- 17,019 7.14 -87.8 0.35 LMW-9 RDIP UB 2/8/12 7.97 4.99 2.98 -- 8,527 8.09 -172.3 0.45 LMW-9 O&M UB 2/14/13 7.97 4.90 3.07 -- 4,863 7.40 -9.1 0.59 LMW-9 O&M UB 2/25/14 7.97 5.05 2.92 -- 6,710 6.98 -129.1 1.93 LMW-9 O&M UB 6/11/15 7.97 4.80 3.17 -- 2,736 8.00 -144.3 0.14 LMW-9 O&M UB 2/23/16 7.97 4.95 3.02 -- 6,261 6.59 -92.9 4.65 LMW-9 O&M UB 2/14/17 7.97 4.79 3.18 3.6 5,102 6.97 -95.9 0.71 LMW-9 O&M UB 2/15/18 7.97 5.00 2.97 -- 1,371 7.12 -15.3 0.58 LMW-9 O&M UB 9/11/18 7.97 5.35 2.62 -- 3,455 7.27 -120.6 -- LMW-9 O&M UB 2/12/19 7.97 5.01 2.96 -- 15,286 7.86 -133.9 0.12 LMW-9 O&M UB 3/11/20 7.97 5.23 2.74 -- 7,228 7.82 -90.5 0.63 FA-1 A 7/18/08 8.07 4.96 3.11 -- 940 -- -- --
FA-1 A 7/22/08 8.07 4.93 3.14 -- 1,081 -- -227.9 3.84
FA-1 A 8/6/08 8.07 5.00 3.07 -- -- -- -- --
FA-1 A 11/6/08 8.07 4.71 3.36 -- 896 7.46 52.3 2.67
FA-1 A 12/2/08 8.07 4.95 3.12 -- 719 -- -46.9 --
FA-1 A 2/4/09 8.07 4.83 3.24 8.6 1,525 7.61 18.9 0.34
FA-1 A 5/5/09 8.07 3.42 4.65 -- 576 7.75 -3.7 3.56
FA-1 A 5/6/09 8.07 4.77 3.30 -- 503 7.68 121.8 2.81
FA-1 A 8/5/09 8.07 4.62 3.45 3.0 751 7.38 132.1 1.32
FA-1 A 11/4/09 8.07 4.72 3.35 -- 815 7.52 -32.5 0.51
FA-1 A 11/17/09 8.07 4.97 3.10 -- 792 -- -- --
Table 6G
Groundwater Elevation Data, Field Measurements and Other Analyses Railroad Western Boundary
Former Kaiser Aerotech Facilities
San Leandro, California

Page 4 of 5 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Date Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
FA-1 A 11/18/09 8.07 4.88 3.19 -- 782 -- -- --
FA-1 A 2/4/10 8.07 4.56 3.51 3.5 755 7.40 180.3 0.98
FA-1 A 5/4/10 8.07 5.05 3.02 -- 649 7.94 35.0 1.74
FA-1 A 8/3/10 8.07 4.99 3.08 -- -- -- -- --
FA-1 A 8/4/10 8.07 -- -- -- 632 7.61 -30.3 0.55
FA-1 A 2/9/11 8.07 4.87 3.20 -- 695 7.93 -111.9 1.37
FA-1 A 2/8/12 8.07 4.66 3.41 -- 692 7.50 66.4 0.41
FA-1 A 2/14/13 8.07 4.85 3.22 -- 615 7.54 -17.6 0.68
FA-1 A 2/26/14 8.07 4.04 4.03 -- 620 7.64 191.3 7.64
FA-1 A 6/11/15 8.07 4.63 3.44 -- 595 7.18 49.5 --
FA-1 A 2/24/16 8.07 4.77 3.30 -- 621 6.26 53.1 1.94
FA-1 A 2/16/17 8.07 2.40 5.67 -- 390 7.16 53.4 0.85
FA-1 A 2/15/18 8.07 4.90 3.17 -- 517 7.33 66.0 0.95
FA-1 A 2/14/19 8.07 1.78 6.29 -- 619 7.24 79.8 0.82
FA-1 A 3/11/20 8.07 4.84 3.23 -- 718 6.32 64.0 0.88
FUB-1 UB 7/18/08 8.13 5.02 3.11 -- 827 -- -- --
FUB-1 UB 7/22/08 8.13 5.00 3.13 -- 857 -- -302.7 0.75
FUB-1 UB 8/5/08 8.13 5.05 3.08 -- -- -- -- --
FUB-1 UB 11/6/08 8.13 4.73 3.40 -- 830 7.21 -34.4 4.74
FUB-1 UB 12/2/08 8.13 5.03 3.10 -- 752 -- -42.6 --
FUB-1 UB 2/4/09 8.13 5.10 3.03 5.8 1,469 7.34 -6.6 0.62 FUB-1 UB 5/5/09 8.13 3.74 4.39 -- 623 7.48 -22.0 2.29
FUB-1 UB 5/6/09 8.13 4.59 3.54 -- 555 7.38 93.6 2.56
FUB-1 UB 8/5/09 8.13 4.69 3.44 3.7 803 7.29 73.4 2.72
FUB-1 UB 11/4/09 8.13 4.91 3.22 -- 786 7.37 -36.5 1.31
FUB-1 UB 11/17/09 8.13 4.59 3.54 -- 793 -- -- --
FUB-1 UB 11/18/09 8.13 4.82 3.31 -- 793 -- -- --
FUB-1 UB 2/4/10 8.13 4.76 3.37 4.8 769 7.26 170.1 3.02
FUB-1 UB 5/4/10 8.13 5.12 3.01 -- 762 7.56 104.6 0.94
FUB-1 UB 8/3/10 8.13 5.02 3.11 -- -- -- -- --
FUB-1 UB 8/4/10 8.13 -- -- -- 689 7.38 -45.7 0.07
FUB-1 UB 2/9/11 8.13 4.89 3.24 -- 797 7.86 -119.7 1.61
FUB-1 UB 2/8/12 8.13 4.56 3.57 -- 783 7.25 63.4 0.73
FUB-1 UB 2/14/13 8.13 4.94 3.19 -- 823 7.51 6.8 0.96
FUB-1 UB 2/26/14 8.13 4.95 3.18 -- 652 7.43 209.4 4.82
FUB-1 UB 6/11/15 8.13 4.72 3.41 -- 594 7.10 45.2 --
FUB-1 UB 2/24/16 8.13 4.90 3.23 -- 743 6.03 54.2 1.91
FUB-1 UB 2/16/17 8.13 2.90 5.23 -- 620 7.12 64.8 0.89
FUB-1 UB 2/15/18 8.13 5.00 3.13 -- 562 7.30 75.2 1.03
FUB-1 UB 2/14/19 8.13 2.10 6.03 -- 717 7.11 97.5 0.89
FUB-1 UB 3/11/20 8.13 5.08 3.05 -- 730 6.50 68.5 1.68
F-2 A/B 2/4/09 8.69 5.14 3.55 -- 1,589 7.55 -32.8 0.50
F-2 A/B 5/5/09 8.69 4.31 4.38 -- 597 7.49 -34.4 2.08
F-2 A/B 5/6/09 8.69 4.72 3.97 -- 523 7.54 89.7 2.31
F-2 A/B 8/5/09 8.32 4.97 3.35 -- 716 7.29 -43.8 3.94
F-2 A/B 11/4/09 8.32 4.99 3.33 -- 653 7.30 -126.9 0.46
F-2 A/B 2/1/10 8.32 4.57 3.75 -- 680 7.40 -2.7 2.60
F-2 A/B 5/4/10 8.32 4.91 3.41 -- -- -- -- --
F-2 A/B 8/3/10 8.32 5.20 3.12 -- -- -- -- --
F-2 A/B 8/4/10 8.32 -- -- -- 742 7.38 -140.3 0.99
F-2 A/B 2/9/11 8.32 3.89 4.43 -- 694 7.80 -112.3 1.29
F-2 A/B 2/8/12 8.32 5.02 3.30 -- 682 7.26 -18.4 0.07
F-2 A/B 2/14/13 8.32 5.05 3.27 -- 627 7.63 -21.2 0.41
F-2 A/B 2/26/14 8.32 5.20 3.12 -- 579 7.20 205.1 --
F-2 A/B 6/11/15 8.32 5.25 3.07 -- 506 6.48 119.0 --
F-2 A/B 2/24/16 8.32 5.07 3.25 -- 673 6.16 62.2 1.59
F-2 A/B 2/16/17 8.32 4.80 3.52 -- 602 7.01 79.3 0.85
Table 6G
Groundwater Elevation Data, Field Measurements and Other Analyses Railroad Western Boundary
Former Kaiser Aerotech Facilities
San Leandro, California

Page 5 of 5 ends

Page 1 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
MW-3 A 11/14/96 9.20 5.80 3.40 -- -- -- -- --
MW-3 A 3/20/97 9.20 5.65 3.55 -- -- -- -- --
MW-3 A 6/25/97 9.20 5.82 3.38 -- -- -- -- --
MW-3 A 9/22/97 9.20 5.84 3.36 -- -- -- -- --
MW-3 A 12/18/97 9.20 5.23 3.97 -- -- -- -- --
MW-3 A 3/23/98 9.20 5.51 3.69 -- -- -- -- --
MW-3 A 6/17/98 9.20 5.68 3.52 -- -- -- -- --
MW-3 A 9/22/98 9.20 5.85 3.35 -- -- -- -- --
MW-3 A 9/24/98 9.20 -- -- -- -- -- 132.2 1.58
MW-3 A 12/9/98 9.20 5.56 3.64 -- -- -- 195.0 4.35
MW-3 A 3/22/99 9.20 5.43 3.77 -- -- -- -- --
MW-3 A 6/21/99 9.20 5.80 3.40 -- -- -- -- --
MW-3 A 9/20/99 9.20 5.87 3.33 -- -- -- -- --
MW-3 A 12/13/99 9.20 5.71 3.49 -- -- -- -- --
MW-3 A 3/13/00 9.20 5.31 3.89 -- -- -- -- --
MW-3 A 9/18/00 9.20 5.80 3.40 -- -- -- -- --
MW-3 A 3/12/01 9.20 5.47 3.73 -- 828 -- -- --
MW-3 A 9/24/01 9.20 5.84 3.36 -- -- -- -- --
MW-3 A 3/26/02 9.20 5.37 3.83 -- -- -- -- --
MW-3 A 10/3/02 9.20 5.84 3.36 -- 1,080 -- -- --
MW-3 A 3/26/03 9.20 5.63 3.57 -- 952 -- -5.0 1.70
MW-3 A 3/9/04 9.20 5.40 3.80 -- 828 -- -- --
MW-3 A 3/10/04 9.20 -- -- -- -- -- 90.5 0.54
MW-3 A 3/8/05 9.20 5.35 3.85 -- 746 -- -12.5 2.16
MW-3 A 3/14/06 9.20 4.86 4.34 -- 885 -- 119.8 1.94
MW-3 A 2/2/07 9.20 5.59 3.61 -- 2,012 9.91 -108.2 2.80
MW-3 A 2/2/07 9.20 6.05 3.15 -- -- -- -- --
MW-3 A 8/15/07 9.20 5.86 3.34 -- -- -- -- --
MW-3 A 11/14/07 9.20 5.65 3.55 -- -- -- -- --
MW-3 A 2/6/08 9.20 5.30 3.90 -- 969 7.37 -72.3 1.28
MW-3 A 2/5/09 9.20 5.71 3.49 -- 1,848 7.02 -3.9 0.51
MW-3 A 5/6/09 9.20 5.65 3.55 -- -- -- -- --
MW-3 A 8/4/09 9.20 5.75 3.45 -- -- -- -- --
MW-3 A 11/4/09 9.20 5.72 3.48 -- -- -- -- --
MW-3 A 2/3/10 9.20 5.41 3.79 -- 925 7.06 71.4 0.90
MW-3 A 8/3/10 9.20 5.85 3.35 -- -- -- -- --
MW-3 A 2/8/11 9.20 5.62 3.58 -- 877 6.99 -47.5 0.60
MW-3 O&M A 2/14/13 9.20 5.46 3.74 -- 829 6.97 -156.6 1.25 MW-3 O&M A 6/10/15 9.20 5.80 3.40 -- 762 6.70 112.4 --
MW-3 O&M A 2/15/17 9.20 5.45 3.75 -- 687 7.75 122.1 0.86 MW-3 O&M A 2/11/19 9.20 5.40 3.80 -- 870 6.91 179.5 0.30 MW-4 A 11/14/96 9.13 5.60 3.53 -- -- -- -- --
MW-4 A 3/20/97 9.13 5.38 3.75 -- -- -- -- --
MW-4 A 6/25/97 9.13 5.62 3.51 -- -- -- -- --
MW-4 A 9/23/97 9.13 5.70 3.43 -- -- -- -- --
MW-4 A 12/18/97 9.13 4.98 4.15 -- -- -- -- --
MW-4 A 3/23/98 9.13 5.22 3.91 -- -- -- -- --
MW-4 A 6/17/98 9.13 5.45 3.68 -- -- -- -- --
MW-4 A 9/22/98 9.13 5.71 3.42 -- -- -- -- --
MW-4 A 9/24/98 9.13 -- -- -- -- -- 100.1 2.2
MW-4 A 12/9/98 9.13 5.22 3.91 -- -- -- 71.0 5.78
MW-4 A 3/22/99 9.13 5.05 4.08 -- -- -- -- --
MW-4 A 6/21/99 9.13 5.63 3.50 -- -- -- -- --
MW-4 A 9/20/99 9.13 5.73 3.40 -- -- -- -- --
MW-4 A 12/13/99 9.13 5.43 3.70 -- -- -- -- --
MW-4 A 3/13/00 9.13 4.86 4.27 -- -- -- -- --
MW-4 A 9/18/00 9.13 5.67 3.46 -- -- -- -- --
MW-4 A 3/12/01 9.13 5.21 3.92 -- 819 -- -- --
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 2 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-4 A 9/24/01 9.13 5.75 3.38 -- -- -- -- --
MW-4 A 3/26/02 9.13 4.95 4.18 -- -- -- -- --
MW-4 A 10/3/02 9.13 5.57 3.56 -- 930 -- -- --
MW-4 A 3/26/03 9.13 5.36 3.77 -- 835 -- -74.5 1.04
MW-4 A 9/23/03 9.13 5.76 3.37 -- 859 -- -279.2 0.26
MW-4 A 12/16/03 9.13 4.91 4.22 -- -- -- -- --
MW-4 A 3/9/04 9.13 5.18 3.95 -- -- -- -- --
MW-4 A 3/10/04 9.13 -- -- -- 683 -- -55.7 1.75
MW-4 A 5/20/04 9.13 5.75 3.38 -- -- -- -- --
MW-4 A 9/29/04 9.13 5.76 3.37 -- -- -- -- --
MW-4 A 12/8/04 9.13 4.16 4.97 -- -- -- -- --
MW-4 A 3/8/05 9.13 5.16 3.97 -- 693 -- -42.1 2.51
MW-4 A 6/14/05 9.13 5.50 3.63 -- -- -- -- --
MW-4 A 9/14/05 9.13 5.77 3.36 -- -- -- -- --
MW-4 A 12/14/05 9.13 5.70 3.43 -- -- -- -- --
MW-4 A 3/15/06 9.13 4.75 4.38 -- 765 -- -107.0 4.59
MW-4 A 6/13/06 9.13 5.65 3.48 -- -- -- -- --
MW-4 A 9/20/06 9.13 5.80 3.33 -- -- -- -- --
MW-4 A 2/1/07 9.13 5.59 3.54 -- 662 7.28 -31.0 0.47
MW-4 A 8/15/07 9.13 5.76 3.37 -- -- -- -- --
MW-4 A 11/14/07 9.13 5.54 3.59 -- -- -- -- --
MW-4 A 2/6/08 9.13 5.14 3.99 -- 799 7.39 -55.8 1.97
MW-4 A 5/7/08 9.13 6.00 3.13 -- -- -- -- --
MW-4 A 8/5/08 9.13 4.92 4.21 -- -- -- -- --
MW-4 A 11/6/08 9.13 5.42 3.71 -- -- -- -- --
MW-4 A 2/4/09 9.13 5.60 3.53 -- 1,490 7.31 -18.7 0.56
MW-4 A 3/6/09 9.13 -- -- -- 920 -- -4.5 3.47
MW-4 A 5/6/09 9.13 5.36 3.77 -- -- -- -- --
MW-4 A 8/4/09 9.13 5.61 3.52 -- -- -- -- --
MW-4 A 11/4/09 9.13 5.63 3.50 -- -- -- -- --
MW-4 A 2/2/10 9.13 5.31 3.82 -- 778 7.26 187.1 2.67
MW-4 A 5/4/10 9.13 5.48 3.65 -- -- -- -- --
MW-4 A 8/3/10 9.13 5.71 3.42 -- -- -- -- --
MW-4 A 2/8/11 9.13 5.51 3.62 -- 716 6.74 -103.6 1.35
MW-4 O&M A 2/14/13 9.13 5.67 3.46 -- 673 7.22 -169.0 2.86 MW-4 O&M A 6/11/15 9.13 5.51 3.62 -- 660 6.96 63.2 --
MW-4 O&M A 2/15/17 9.13 4.97 4.16 -- -- -- -- --
MW-4 Sup. A 2/14/18 9.13 5.65 3.48 -- 634 7.15 62.6 0.98 MW-4 O&M A 2/11/19 9.13 5.04 4.09 -- 732 7.24 136.4 0.29 MW-5 A 11/14/96 9.90 5.63 4.27 -- -- -- -- --
MW-5 A 3/20/97 9.90 3.73 6.17 -- -- -- -- --
MW-5 A 6/25/97 9.90 4.88 5.02 -- -- -- -- --
MW-5 A 9/22/97 9.90 5.08 4.82 -- -- -- -- --
MW-5 A 12/18/97 9.90 3.35 6.55 -- -- -- -- --
MW-5 A 3/23/98 9.90 3.82 6.08 -- -- -- -- --
MW-5 A 6/17/98 9.90 3.94 5.96 -- -- -- -- --
MW-5 A 9/22/98 9.90 5.04 4.86 -- -- -- -- --
MW-5 A 9/24/03 9.90 -- -- -- -- -- 195.1 1.5
MW-5 A 12/9/98 9.90 3.99 5.91 -- -- -- -- --
MW-5 A 12/10/98 9.90 -- -- -- -- -- 163.0 3.81
MW-5 A 3/22/99 9.90 3.71 6.19 -- -- -- -- --
MW-5 A 6/21/99 9.90 5.01 4.89 -- -- -- -- --
MW-5 A 9/20/99 9.90 5.23 4.67 -- -- -- -- --
MW-5 A 12/13/99 9.90 4.54 5.36 -- -- -- -- --
MW-5 A 3/13/00 9.90 3.02 6.88 -- -- -- -- --
MW-5 A 9/18/00 9.90 5.10 4.80 -- -- -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 3 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-5 A 3/12/01 9.90 3.78 6.12 -- 687 -- -- --
MW-5 A 9/24/01 9.90 5.25 4.65 -- -- -- -- --
MW-5 A 3/26/02 9.90 3.72 6.18 -- -- -- -- --
MW-5 A 10/3/02 9.90 5.21 4.69 -- 753 -- -- --
MW-5 A 3/26/03 9.90 4.27 5.63 -- 817 -- -6.9 1.28
MW-5 A 9/23/03 9.90 5.18 4.72 -- 715 -- 18.9 7.20
MW-5 A 12/16/03 9.90 4.36 5.54 -- -- -- -- --
MW-5 A 3/9/04 9.90 3.93 5.97 -- 662 -- 194.2 2.58
MW-5 A 5/20/04 9.90 4.91 4.99 -- -- -- -- --
MW-5 A 9/29/04 9.90 5.09 4.81 -- -- -- -- --
MW-5 A 12/8/04 9.90 4.21 5.69 -- -- -- -- --
MW-5 A 3/8/05 9.90 3.24 6.66 -- 667 -- -30.4 2.72
MW-5 A 6/14/05 9.90 4.51 5.39 -- -- -- -- --
MW-5 A 9/14/05 9.90 5.10 4.80 -- -- -- -- --
MW-5 A 12/14/05 9.90 4.66 5.24 -- -- -- -- --
MW-5 A 3/15/06 9.90 3.23 6.67 -- 920 -- -75.6 6.47
MW-5 A 6/13/06 9.90 4.69 5.21 -- -- -- -- --
MW-5 A 9/20/06 9.90 5.00 4.90 -- -- -- -- --
MW-5 A 2/1/07 9.90 4.52 5.38 -- 689 7.00 19.5 0.75
MW-5 A 5/10/07 9.90 4.59 5.31 -- -- -- -- --
MW-5 A 8/15/07 9.90 5.02 4.88 -- -- -- -- --
MW-5 A 11/13/07 9.90 5.78 4.12 -- -- -- -- --
MW-5 A 2/7/08 9.90 3.67 6.23 -- 902 7.25 -10.1 3.21
MW-5 A 8/5/08 9.90 5.03 4.87 -- -- -- -- --
MW-5 A 11/6/08 9.90 4.48 5.42 -- -- -- -- --
MW-5 A 2/4/09 9.90 4.72 5.18 -- 1,661 7.06 3.8 2.84
MW-5 A 3/6/09 9.90 -- -- -- 951 -- 102.5 4.25
MW-5 A 5/6/09 9.90 4.65 5.25 -- -- -- -- --
MW-5 A 8/4/09 9.90 5.11 4.79 -- -- -- -- --
MW-5 A 11/4/09 9.90 4.61 5.29 -- -- -- -- --
MW-5 A 2/2/10 9.90 3.49 6.41 -- 909 6.94 86.0 1.01
MW-5 A 8/3/10 9.90 4.92 4.98 -- -- -- -- --
MW-5 A 2/9/11 9.90 4.55 5.35 -- 946 8.21 -82 0.24
MW-5 O&M A 2/13/13 9.90 4.75 5.15 -- 791 6.74 108.5 0.64 MW-5 O&M A 6/11/15 9.90 5.04 4.86 -- 831 6.09 145.9 --
MW-5 O&M A 2/14/17 9.90 3.80 6.10 -- 872 7.22 4.7 0.97
MW-5 O&M A 2/11/19 9.90 3.88 6.02 -- 923 6.94 156.2 0.23 MW-6 A 11/14/96 9.40 5.26 4.14 -- -- -- -- --
MW-6 A 3/20/97 9.40 4.76 4.64 -- -- -- -- --
MW-6 A 6/25/97 9.40 5.22 4.18 -- -- -- -- --
MW-6 A 9/23/97 9.40 5.33 4.07 -- -- -- -- --
MW-6 A 12/18/97 9.40 3.76 5.64 -- -- -- -- --
MW-6 A 3/23/98 9.40 4.30 5.10 -- -- -- -- --
MW-6 A 6/17/98 9.40 4.82 4.58 -- -- -- -- --
MW-6 A 9/22/98 9.40 5.38 4.02 -- -- -- -- --
MW-6 A 9/24/98 9.40 -- -- -- -- -- 74.2 2.26
MW-6 A 12/9/98 9.40 4.10 5.30 -- -- -- -- --
MW-6 A 12/10/98 9.40 -- -- -- -- -- 65.0 3.49
MW-6 A 3/22/99 9.40 3.88 5.52 -- -- -- -- --
MW-6 A 6/21/99 9.40 5.25 4.15 -- -- -- -- --
MW-6 A 9/20/99 9.40 5.47 3.93 -- -- -- -- --
MW-6 A 12/13/99 9.40 4.67 4.73 -- -- -- -- --
MW-6 A 3/13/00 9.40 3.32 6.08 -- -- -- -- --
MW-6 A 9/18/00 9.40 5.32 4.08 -- -- -- -- --
MW-6 A 3/12/01 9.40 4.24 5.16 -- 390 -- -- --
MW-6 A 9/24/01 9.40 -- -- -- -- -- -- --
MW-6 A 3/26/02 9.40 3.51 5.89 -- -- -- 4.5 1.28
MW-6 A 10/3/02 9.40 5.51 3.89 -- 554 -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 4 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-6 A 3/26/03 9.40 4.57 4.83 -- 590 -- -- --
MW-6 A 3/9/04 9.40 4.81 4.59 -- -- -- -- --
MW-6 A 5/18/06 9.40 5.03 4.37 -- 793 6.25 42.2 21.75
MW-6 A 9/20/06 9.40 5.39 4.01 -- -- -- -- --
MW-6 A 8/15/07 9.40 5.39 4.01 -- 805 7.49 -4.1 1.79
MW-6 A 2/8/08 9.40 4.48 4.92 -- 853 7.38 19.4 1.54
MW-6 A 8/5/08 9.40 4.80 4.60 -- -- -- -- --
MW-6 A 2/2/09 9.40 5.15 4.25 -- 954 7.13 29.8 1.49
MW-6 A 8/25/09 9.40 5.47 3.93 -- -- -- -- --
MW-6 A 11/4/09 9.40 5.09 4.31 -- -- -- -- --
MW-6 A 2/2/10 9.40 4.54 4.86 -- 860 7.05 177.8 1.06
MW-6 A 8/3/10 9.40 5.19 4.21 -- -- -- -- --
MW-6 A 2/9/11 9.40 5.29 4.11 -- 896 8.30 -73 0.21
MW-6 O&M A 3/4/13 9.40 5.26 4.14 -- 815 7.53 212.4 1.05 MW-6 O&M A 6/10/15 9.40 5.10 4.30 -- 785 6.21 157.7 --
MW-6 O&M A 2/15/17 9.40 5.65 3.75 -- 396 7.93 93.4 0.31 MW-6 O&M A 2/11/19 9.40 4.40 5.00 -- 986 7.10 167.8 0.24 MW-8A A 3/20/97 12.97 7.32 5.65 -- -- -- -- --
MW-8A A 6/25/97 12.97 7.74 5.23 -- -- -- -- --
MW-8A A 9/23/97 12.97 7.89 5.08 -- -- -- -- --
MW-8A A 12/18/97 12.97 6.34 6.63 -- -- -- -- --
MW-8A A 3/23/98 12.97 6.78 6.19 -- -- -- -- --
MW-8A A 6/17/98 12.97 7.37 5.60 -- -- -- -- --
MW-8A A 9/22/98 12.97 7.94 5.03 -- -- -- 154.5 3.60
MW-8A A 12/9/98 12.97 7.18 5.79 -- -- -- 241.0 13.66
MW-8A A 3/22/99 12.97 6.57 6.40 -- -- -- -- --
MW-8A A 6/28/99 12.97 7.92 5.05 -- -- -- -- --
MW-8A A 9/20/99 12.97 8.15 4.82 -- -- -- -- --
MW-8A A 12/13/99 12.97 7.71 5.26 -- -- -- -- --
MW-8A A 3/13/00 12.97 6.59 6.38 -- -- -- -- --
MW-8A A 9/18/00 12.97 7.93 5.04 -- -- -- -- --
MW-8A A 3/12/01 12.97 6.81 6.16 -- 908 -- -- --
MW-8A A 9/24/01 12.97 8.06 4.91 -- -- -- -- --
MW-8A A 3/26/02 12.97 6.66 6.31 -- -- -- -- --
MW-8A A 10/3/02 12.97 8.08 4.89 -- 1,240 -- -- --
MW-8A A 3/26/03 12.97 7.32 5.65 -- 1,020 -- 80.7 2.11
MW-8A A 9/23/03 12.97 7.99 4.98 -- -- -- -- --
MW-8A A 9/24/03 12.97 -- -- -- 1,058 -- 427.3 1.37
MW-8A A 12/16/03 12.97 7.15 5.82 -- -- -- -- --
MW-8A A 3/9/04 13.98 7.75 6.23 -- -- -- -- --
MW-8A A 3/10/04 13.98 -- -- -- 990 -- -16.9 1.63
MW-8A A 5/20/04 13.98 8.71 5.27 -- -- -- -- --
MW-8A A 9/29/04 13.98 8.90 5.08 -- -- -- -- --
MW-8A A 12/8/04 13.98 7.93 6.05 -- -- -- -- --
MW-8A A 3/8/05 13.98 7.54 6.44 -- -- -- -- --
MW-8A A 3/9/05 13.98 -- -- -- 958 -- 18.4 1.66
MW-8A A 6/14/05 13.97 8.35 5.62 -- -- -- -- --
MW-8A A 9/14/05 13.97 8.90 5.07 -- -- -- -- --
MW-8A A 12/14/05 13.97 8.63 5.34 -- -- -- -- --
MW-8A A 3/15/06 13.97 7.48 6.49 -- 1,389 -- -83.3 9.40
MW-8A A 6/13/06 13.97 8.09 5.88 -- -- -- -- --
MW-8A A 9/20/06 13.97 8.68 5.29 -- -- -- -- --
MW-8A A 1/30/07 13.97 8.43 5.54 -- -- -- -- --
MW-8A A 2/1/07 13.97 8.45 5.52 -- 527 6.48 51.4 0.46
MW-8A A 8/15/07 13.97 8.83 5.14 -- -- -- -- --
MW-8A A 11/13/07 13.97 8.50 5.47 -- -- -- -- --
MW-8A A 2/5/08 13.97 7.88 6.09 -- 1,294 6.33 -37.1 0.87 MW-8A A 2/3/09 13.97 8.43 5.54 -- -- -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 5 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-8A A 2/1/10 13.97 7.63 6.34 -- 1,279 6.57 75.6 1.50
MW-8A A 2/8/11 13.97 8.46 5.51 -- 1,175 6.52 -83 0.46
MW-8A O&M A 2/14/13 13.97 8.66 5.31 -- 947 6.45 -149.2 1.69 MW-8A O&M A 6/9/15 13.97 9.72 4.25 -- -- -- -- --
MW-8A O&M A 6/10/15 13.97 9.70 4.27 -- 948 6.01 124 --
MW-8A O&M A 2/14/17 13.97 7.05 6.92 -- 500 5.78 143.1 0.13 MW-8A O&M A 2/11/19 13.97 7.80 6.17 -- 1,032 6.62 140.6 0.34 MW-9 A 11/14/96 11.94 7.37 4.57 -- -- -- -- --
MW-9 A 3/20/97 11.94 6.95 4.99 -- -- -- -- --
MW-9 A 6/25/97 11.94 7.34 4.60 -- -- -- -- --
MW-9 A 9/23/97 11.94 7.62 4.32 -- -- -- -- --
MW-9 A 12/18/97 11.94 7.00 4.94 -- -- -- -- --
MW-9 A 3/23/98 11.94 6.69 5.25 -- -- -- -- --
MW-9 A 6/17/98 11.94 7.00 4.94 -- -- -- -- --
MW-9 A 9/22/98 11.94 7.33 4.61 -- -- -- 158.5 1.44
MW-9 A 12/9/98 12.04 6.80 5.24 -- -- -- -- --
MW-9 A 3/22/99 12.04 6.59 5.45 -- -- -- -- --
MW-9 A 6/29/99 12.04 7.15 4.89 -- -- -- -- --
MW-9 A 9/20/99 12.04 7.55 4.49 -- -- -- -- --
MW-9 A 12/13/99 12.04 7.24 4.80 -- -- -- -- --
MW-9 A 3/13/00 12.04 6.21 5.83 -- -- -- -- --
MW-9 A 9/18/00 12.04 7.33 4.71 -- -- -- -- --
MW-9 A 3/12/01 12.04 6.59 5.45 -- 1,062 -- -- --
MW-9 A 9/24/01 12.04 7.52 4.52 -- -- -- -- --
MW-9 A 3/26/02 12.04 6.43 5.61 -- -- -- -- --
MW-9 A 10/3/02 12.04 7.60 4.44 -- 1,670 -- -- --
MW-9 A 3/26/03 12.04 7.01 5.03 -- 1,289 -- 83.6 1.94
MW-9 A 6/26/03 12.04 7.72 4.32 -- -- -- -- --
MW-9 A 9/23/03 12.04 7.71 4.33 -- -- -- -- --
MW-9 A 12/16/03 12.04 6.92 5.12 -- -- -- -- --
MW-9 A 3/9/04 13.02 7.68 5.34 -- 1,183 -- 40.4 2.25
MW-9 A 5/20/04 13.02 5.15 7.87 -- -- -- -- --
MW-9 A 9/29/04 13.02 8.25 4.77 -- -- -- -- --
MW-9 A 12/8/04 13.02 7.57 5.45 -- -- -- -- --
MW-9 A 3/8/05 13.02 7.20 5.82 -- -- -- -- --
MW-9 A 3/10/05 13.02 -- -- -- 1,125 -- -19.8 2.68
MW-9 A 6/14/05 13.02 7.82 5.20 -- -- -- -- --
MW-9 A 9/14/05 13.02 6.20 6.82 -- -- -- -- --
MW-9 A 12/14/05 13.02 8.10 4.92 -- -- -- -- --
MW-9 A 3/15/06 13.02 7.55 5.47 -- 1,277 -- 95.6 3.17
MW-9 A 6/13/06 13.02 7.94 5.08 -- -- -- -- --
MW-9 A 9/20/06 13.02 8.11 4.91 -- -- -- -- --
MW-9 A 1/30/07 13.02 7.89 5.13 -- -- -- -- --
MW-9 A 2/1/07 13.02 -- -- -- 1,319 6.61 -9.8 0.64
MW-9 A 8/14/07 13.02 8.21 4.81 -- -- -- -- --
MW-9 A 11/14/07 13.02 8.18 4.84 -- -- -- -- --
MW-9 A 2/5/08 13.02 7.15 5.87 -- 1,489 6.47 20.4 1.82
MW-9 A 5/6/08 13.02 7.90 5.12 -- -- -- -- --
MW-9 A 8/5/08 13.02 8.30 4.72 -- -- -- -- --
MW-9 A 11/6/08 13.02 8.40 4.62 -- -- -- -- --
MW-9 A 2/2/09 13.02 8.11 4.91 -- 1,748 6.67 21.3 1.72
MW-9 A 5/6/09 13.02 7.81 5.21 -- -- -- -- --
MW-9 A 8/4/09 13.02 8.43 4.59 -- -- -- -- --
MW-9 A 8/24/09 13.02 8.40 4.62 -- -- -- -- --
MW-9 A 11/4/09 13.02 8.38 4.64 -- -- -- -- --
MW-9 A 2/1/10 13.02 7.33 5.69 -- 1,510 6.61 12.6 1.78
MW-9 A 5/4/10 13.02 7.84 5.18 -- -- -- -- --
MW-9 A 8/3/10 13.02 8.27 4.75 -- -- -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 6 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-9 A 2/8/11 13.02 7.90 5.12 -- 1,545 6.47 -80 1.61
MW-9 A 2/7/12 13.02 8.14 4.88 -- -- -- -- --
MW-9 O&M A 2/12/13 13.02 8.15 4.87 -- 1,332 6.40 24.7 1.00 MW-9 O&M A 2/25/14 13.02 8.17 4.85 -- -- -- -- --
MW-9 O&M A 6/9/15 13.02 8.38 4.64 -- 1,264 5.95 166.9 -- MW-9 Sup. A 2/23/16 13.02 8.20 4.82 -- 1,322 6.74 -15.5 0.81 MW-9 Sup. A 9/22/16 13.02 8.62 4.40 -- 1,376 6.78 127.0 1.78 MW-9 O&M A 2/14/17 13.02 7.31 5.71 -- 1,325 6.95 -16.8 0.81 MW-9 Sup. A 9/20/17 13.02 8.40 4.62 -- 1,364 6.22 1.0 0.56 MW-9 Sup. A 2/13/18 13.02 8.00 5.02 -- 1,318 6.54 -8.3 1.72 MW-9 Sup. A 9/26/18 13.02 8.60 4.42 -- 1,140 6.81 -27.9 1.76 MW-9 O&M A 2/11/19 13.02 7.41 5.61 -- 1,317 6.59 -2.9 0.28 MW-9 Sup. A 9/24/19 13.02 8.27 4.75 -- 1,263 6.17 -5.0 0.42 MW-9 O&M A 3/10/20 13.02 7.78 5.24 -- 1,008 6.74 24.3 1.48 MW-12 A 3/20/97 10.89 5.55 5.34 -- -- -- -- --
MW-12 A 6/25/97 10.89 6.12 4.77 -- -- -- -- --
MW-12 A 9/23/97 10.89 6.21 4.68 -- -- -- -- --
MW-12 A 12/18/97 10.89 5.58 5.31 -- -- -- -- --
MW-12 A 3/23/98 10.89 4.62 6.27 -- -- -- -- --
MW-12 A 6/17/98 10.89 5.39 5.50 -- -- -- -- --
MW-12 A 9/22/98 10.89 6.21 4.68 -- -- -- 127.4 2.01
MW-12 A 12/9/98 10.89 5.04 5.85 -- -- -- 256.0 12.65
MW-12 A 3/22/99 10.89 4.68 6.21 -- -- -- -- --
MW-12 A 6/21/99 10.89 6.13 4.76 -- -- -- -- --
MW-12 A 9/20/99 10.89 6.42 4.47 -- -- -- -- --
MW-12 A 12/13/99 10.89 5.84 5.05 -- -- -- -- --
MW-12 A 3/13/00 10.89 4.40 6.49 -- -- -- -- --
MW-12 A 9/18/00 10.89 6.18 4.71 -- -- -- -- --
MW-12 A 3/12/01 10.89 5.24 5.65 -- 989 -- -- --
MW-12 A 9/24/01 10.89 6.38 4.51 -- -- -- -- --
MW-12 A 3/26/02 10.89 5.24 5.65 -- -- -- 81.9 1.85
MW-12 A 10/3/02 10.89 6.62 4.27 -- 1,100 -- -- --
MW-12 A 3/26/03 10.89 5.69 5.20 -- 1,008 -- -- --
MW-12 A 12/16/03 10.89 5.10 5.79 -- -- -- -- --
MW-12 A 3/9/04 11.63 5.68 5.95 -- -- -- -- --
MW-12 A 3/10/04 11.63 -- -- -- 621 -- -2.0 2.81
MW-12 A 5/20/04 11.63 6.65 4.98 -- -- -- -- --
MW-12 A 9/29/04 11.63 7.05 4.58 -- -- -- -- --
MW-12 A 12/8/04 11.63 6.35 5.28 -- -- -- -- --
MW-12 A 3/8/05 11.63 5.31 6.32 -- -- -- -- --
MW-12 A 3/9/05 11.63 -- -- -- 880 -- 24.6 1.50
MW-12 A 6/14/05 11.63 5.79 5.84 -- -- -- -- --
MW-12 A 9/14/05 11.63 7.00 4.63 -- -- -- -- --
MW-12 A 12/14/05 11.63 5.32 6.31 -- -- -- -- --
MW-12 A 3/15/06 11.63 5.28 6.35 -- 1,171 -- -72.7 5.11
MW-12 A 6/13/06 11.63 5.61 6.02 -- -- -- -- --
MW-12 A 9/20/06 11.63 6.00 5.63 -- -- -- -- --
MW-12 A 1/30/07 11.63 5.65 5.98 -- -- -- -- --
MW-12 A 2/1/07 11.63 -- -- -- 922 6.71 65.7 2.58
MW-12 A 5/8/07 11.63 6.38 5.25 -- -- -- -- --
MW-12 A 8/14/07 11.63 6.76 4.87 -- -- -- -- --
MW-12 A 11/14/07 11.63 6.56 5.07 -- -- -- -- --
MW-12 A 2/5/08 11.63 6.09 5.54 -- 1,009 6.89 -1.9 0.82
MW-12 A 5/6/08 11.63 7.07 4.56 -- -- -- -- --
MW-12 A 8/6/08 11.63 7.30 4.33 -- -- -- -- --
MW-12 A 11/6/08 11.63 7.08 4.55 -- -- -- -- --
MW-12 A 2/4/09 11.63 6.48 5.15 -- 854 6.75 51.9 2.11
MW-12 A 5/6/09 11.63 7.06 4.57 -- -- -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 7 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-12 A 8/5/09 11.63 7.33 4.30 -- -- -- -- --
MW-12 A 11/4/09 11.63 7.23 4.40 -- -- -- -- --
MW-12 A 2/1/10 11.63 6.48 5.15 -- 915 6.67 85.7 2.44
MW-12 A 8/3/10 11.63 7.72 3.91 -- -- -- -- --
MW-12 A 2/8/11 11.63 6.63 5.00 -- 922 6.51 -96 0.38
MW-12 O&M A 2/14/13 11.63 6.58 5.05 -- 792 6.59 -157.2 1.39 MW-12 O&M A 6/10/15 11.63 7.07 4.56 -- 716 6.46 105.1 -- MW-12 Sup. A 2/23/16 11.63 6.95 4.68 -- 971 6.67 88.7 0.97 MW-12 O&M A 2/14/17 11.63 6.31 5.32 -- 719 6.96 160.4 0.11 MW-12 O&M A 2/11/19 11.63 6.15 5.48 -- 970 6.87 149.8 0.25 MW-13 A 3/20/97 9.78 5.03 4.75 -- -- -- -- --
MW-13 A 6/25/97 9.78 5.40 4.38 -- -- -- -- --
MW-13 A 9/22/97 9.78 5.51 4.27 -- -- -- -- --
MW-13 A 12/18/97 9.78 4.05 5.73 -- -- -- -- --
MW-13 A 3/23/98 9.78 4.30 5.48 -- -- -- -- --
MW-13 A 6/17/98 9.78 5.09 4.69 -- -- -- -- --
MW-13 A 9/22/98 9.78 5.55 4.23 -- -- -- -- --
MW-13 A 9/24/98 9.78 -- -- -- -- -- 202.1 4.67
MW-13 A 12/9/98 9.78 4.81 4.97 -- -- -- 206.0 7.43
MW-13 A 3/22/99 9.78 4.40 5.38 -- -- -- -- --
MW-13 A 6/21/99 9.78 5.35 4.43 -- -- -- -- --
MW-13 A 9/20/99 9.78 5.68 4.10 -- -- -- -- --
MW-13 A 12/13/99 9.78 5.18 4.60 -- -- -- -- --
MW-13 A 3/13/00 9.78 4.23 5.55 -- -- -- -- --
MW-13 A 9/18/00 9.78 5.51 4.27 -- -- -- -- --
MW-13 A 3/12/01 9.78 4.58 5.20 -- 837 -- -- --
MW-13 A 9/24/01 9.78 5.63 4.15 -- -- -- -- --
MW-13 A 3/26/02 9.78 4.48 5.30 -- -- -- -- --
MW-13 A 10/3/02 9.78 5.60 4.18 -- 1,100 -- -- --
MW-13 A 3/26/03 9.78 4.92 4.86 -- -- -- -- --
MW-13 A 3/27/03 9.78 -- -- -- 8,670 -- -- 5.75
MW-13 A 6/26/03 9.78 5.26 4.52 -- -- -- -- --
MW-13 A 9/23/03 9.78 5.58 4.20 -- -- -- -- --
MW-13 A 12/16/03 9.78 4.68 5.10 -- -- -- -- --
MW-13 A 3/9/04 9.78 4.63 5.15 -- -- -- -- --
MW-13 A 3/10/04 9.78 -- -- -- 1,045 -- -- --
MW-13 A 5/20/04 9.78 5.37 4.41 -- -- -- -- --
MW-13 A 9/29/04 9.78 5.48 4.30 -- -- -- -- --
MW-13 A 12/8/04 9.78 4.48 5.30 -- -- -- -- --
MW-13 A 3/8/05 9.78 4.40 5.38 -- -- -- -- --
MW-13 A 6/14/05 9.78 5.01 4.77 -- -- -- -- --
MW-13 A 9/14/05 9.78 5.50 4.28 -- -- -- -- --
MW-13 A 12/14/05 9.78 5.31 4.47 -- -- -- -- --
MW-13 A 3/15/06 9.78 4.18 5.60 -- -- -- -- --
MW-13 A 6/13/06 9.78 5.18 4.60 -- -- -- -- --
MW-13 A 9/21/06 9.78 5.45 4.33 -- -- -- -- --
MW-13 A 2/2/07 9.78 5.20 4.58 -- -- -- -- --
MW-13 A 2/5/08 9.78 4.21 5.57 -- 1,175 7.40 12.8 2.80
MW-13 A 5/7/08 9.78 5.54 4.24 -- -- -- -- --
MW-13 A 8/6/08 9.78 5.50 4.28 -- -- -- -- --
MW-13 A 11/6/08 9.78 5.22 4.56 -- -- -- -- --
MW-13 A 2/3/09 9.78 5.36 4.42 -- 1,902 7.06 -27.0 0.57
MW-13 A 8/4/09 9.78 5.46 4.32 -- -- -- -- --
MW-13 A 11/4/09 9.78 5.21 4.57 -- -- -- -- --
MW-13 A 2/3/10 9.78 4.21 5.57 -- 1,000 6.84 75.7 1.28
MW-13 A 8/3/10 9.78 5.45 4.33 -- -- -- -- --
MW-13 A 2/8/11 9.78 5.25 4.53 -- 398 5.94 -108 4.85
MW-13 O&M A 2/14/13 9.78 5.55 4.23 -- -- -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 8 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-13 O&M A 2/15/17 9.78 4.60 5.18 -- 919 7.61 20.3 1.01 MW-13 O&M A 2/13/19 9.78 4.87 4.91 -- 757 7.49 48.1 1.83 MW-15 A 9/22/98 10.78 6.06 4.72 -- -- -- -- --
MW-15 A 9/23/98 10.78 -- -- -- -- -- 220.1 2.70
MW-15 A 12/9/98 10.78 5.21 5.57 -- -- -- 239.0 4.18
MW-15 A 3/22/99 10.78 4.72 6.06 -- -- -- -- --
MW-15 A 6/21/99 10.78 5.90 4.88 -- -- -- -- --
MW-15 A 9/20/99 10.78 6.21 4.57 -- -- -- -- --
MW-15 A 12/13/99 10.78 5.77 5.01 -- -- -- -- --
MW-15 A 3/13/00 10.78 4.40 6.38 -- -- -- -- --
MW-15 A 9/18/00 10.78 6.02 4.76 -- -- -- -- --
MW-15 A 3/12/01 10.78 4.84 5.94 -- 751 -- -- --
MW-15 A 9/24/01 10.78 6.19 4.59 -- -- -- -- --
MW-15 A 3/26/02 10.78 4.79 5.99 -- -- -- -- --
MW-15 A 10/3/02 10.78 6.09 4.69 -- 960 -- -- --
MW-15 A 3/26/03 10.78 5.35 5.43 -- 895 -- -2.9 0.78
MW-15 A 3/9/04 10.78 4.97 5.81 -- -- -- -- --
MW-15 A 3/10/04 10.78 -- -- -- 722 -- 107.0 0.68
MW-15 A 3/8/05 10.78 4.51 6.27 -- -- -- -- --
MW-15 A 3/9/05 10.78 -- -- -- 715 -- 11.2 1.73
MW-15 A 3/15/06 10.78 4.15 6.63 -- 668 -- 166 2.34
MW-15 A 1/31/07 10.78 5.46 5.32 -- 723 6.81 172.1 0.35
MW-15 A 2/5/08 10.78 4.21 6.57 -- 923 7.25 25.8 2.87
MW-15 A 2/3/09 10.78 5.61 5.17 -- 1,628 7.03 19.6 2.28
MW-15 A 8/4/09 10.78 6.04 4.74 -- -- -- -- --
MW-15 A 2/3/10 10.78 4.51 6.27 -- 944 6.75 83.9 0.87
MW-15 A 3/22/10 10.78 5.05 5.73 -- 1,078 -- -- --
MW-15 A 5/10/10 10.78 5.22 5.56 -- 1,070 -- -- --
MW-15 A 2/8/11 10.78 5.47 5.31 -- 1,119 6.36 -117.2 1.32 MW-15 O&M A 2/14/13 10.78 6.69 4.09 -- 700 6.82 -168.2 1.11 MW-15 O&M A 6/10/15 10.78 5.97 4.81 -- 910 7.00 -53.8 1.10 MW-15 O&M A 2/15/17 10.78 4.16 6.62 -- 641 7.68 73 0.29 MW-15 O&M A 2/13/19 10.78 4.25 6.53 -- 729 7.61 110.3 0.49 MW-16 A 9/22/98 11.45 6.78 4.67 -- -- -- 149.7 3.59
MW-16 A 12/9/98 11.45 5.82 5.63 -- -- -- 206.0 12.92
MW-16 A 3/22/99 11.45 5.46 5.99 -- -- -- -- --
MW-16 A 6/21/99 11.45 6.71 4.74 -- -- -- -- --
MW-16 A 9/20/99 11.45 6.99 4.46 -- -- -- -- --
MW-16 A 12/13/99 11.45 -- -- -- -- -- -- --
MW-16 A 3/13/00 11.45 5.06 6.39 -- -- -- -- --
MW-16 A 9/18/00 11.45 -- -- -- -- -- -- --
MW-16 A 3/12/01 11.45 -- -- -- -- -- -- --
MW-16 A 9/24/01 11.45 7.01 4.44 -- -- -- -- --
MW-16 A 3/26/02 11.45 5.90 5.55 -- -- -- -- --
MW-16 A 10/3/02 11.45 7.54 3.91 -- 1,200 -- -- --
MW-16 A 3/26/03 11.45 6.67 4.78 -- 988 -- 87.9 0.88
MW-16 A 9/23/03 11.45 7.48 3.97 -- 1,075 -- 55.1 0.67
MW-16 A 12/16/03 11.45 6.45 5.00 -- -- -- -- --
MW-16 A 3/9/04 11.45 6.58 4.87 -- -- -- -- --
MW-16 A 3/10/04 11.45 -- -- -- 593 -- -91.2 0.69
MW-16 A 5/20/04 11.45 7.16 4.29 -- -- -- -- --
MW-16 A 9/29/04 11.45 7.35 4.10 -- -- -- -- --
MW-16 A 12/8/04 11.45 6.03 5.42 -- -- -- -- --
MW-16 A 3/8/05 11.45 6.00 5.45 -- -- -- -- --
MW-16 A 3/9/05 11.45 -- -- -- 889 -- 6.3 1.43
MW-16 A 6/14/05 11.45 6.81 4.64 -- -- -- -- --
MW-16 A 9/14/05 11.96 7.40 4.56 -- -- -- -- --
MW-16 A 12/14/05 11.96 7.09 4.87 -- -- -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 9 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-16 A 3/15/06 11.96 5.48 6.48 -- 1,100 -- -78.7 3.45
MW-16 A 6/13/06 11.96 7.01 4.95 -- -- -- -- --
MW-16 A 9/20/06 11.96 7.26 4.70 -- -- -- -- --
MW-16 A 1/30/07 11.96 6.83 5.13 -- -- -- -- --
MW-16 A 2/1/07 11.96 6.40 5.56 -- 999 6.61 17.3 0.79
MW-16 A 8/15/07 11.96 7.33 4.63 -- -- -- -- --
MW-16 A 11/14/07 11.96 6.93 5.03 -- -- -- -- --
MW-16 A 2/5/08 11.96 5.97 5.99 -- 1,211 6.49 -39.6 1.40 MW-16 A 2/2/09 11.96 7.05 4.91 -- 1,342 6.77 24.0 2.01
MW-16 A 2/1/10 11.96 6.02 5.94 -- 1,245 6.63 27.8 3.21
MW-16 A 2/8/11 11.96 6.98 4.98 -- 1,223 6.67 -61 0.28
MW-16 O&M A 2/13/13 11.96 7.09 4.87 -- 1,178 6.56 -234.2 3.36 MW-16 O&M A 6/10/15 11.96 7.30 4.66 -- 1,221 6.60 60.9 -- MW-16 O&M A 2/14/17 11.96 5.65 6.31 -- 939 7.64 77.3 0.16 MW-16 O&M A 2/11/19 11.96 5.91 6.05 -- 1,130 6.63 31.7 0.27 MW-20 A 3/21/06 10.35 4.34 6.01 -- 1,280 -- -- --
MW-20 A 3/27/06 10.35 4.82 5.53 -- 1,424 -- 55.0 1.44
MW-20 A 6/14/06 10.35 5.86 4.49 -- 1,226 6.92 -51.1 2.86 MW-20 A 9/20/06 10.35 6.10 4.25 -- 1,149 6.94 -32.5 0.39 MW-20 A 1/30/07 10.35 5.64 4.71 -- -- -- -- --
MW-20 A 2/2/07 10.35 5.80 4.55 -- 1,995 9.74 56.5 3.08
MW-20 A 5/8/07 10.35 5.65 4.70 -- 1,122 6.75 -97.2 1.22 MW-20 A 8/15/07 10.35 6.12 4.23 -- -- -- -- --
MW-20 A 11/14/07 10.35 5.74 4.61 -- -- -- -- --
MW-20 A 2/5/08 10.35 4.91 5.44 -- 1,182 7.18 103.2 0.93 MW-20 A 5/6/08 10.35 5.84 4.51 -- -- -- -- --
MW-20 A 8/5/08 10.35 6.08 4.27 -- -- -- -- --
MW-20 A 11/6/08 10.35 5.62 4.73 -- -- -- -- --
MW-20 A 2/4/09 10.35 5.89 4.46 -- 1,245 6.93 -30.1 1.18 MW-20 A 5/6/09 10.35 5.48 4.87 -- -- -- -- --
MW-20 A 8/5/09 10.35 6.62 3.73 -- -- -- -- --
MW-20 A 11/4/09 10.35 5.62 4.73 -- -- -- -- --
MW-20 A 2/2/10 10.35 4.83 5.52 -- 1,215 6.82 46.1 1.05
MW-20 A 8/3/10 10.35 5.89 4.46 -- -- -- -- --
MW-20 A 2/8/11 10.35 5.72 4.63 -- 1,270 6.86 -74 0.17
MW-20 O&M A 2/13/13 10.35 5.69 4.66 -- 1,096 6.65 95.4 0.43 MW-20 O&M A 6/10/15 10.35 5.96 4.39 -- 1,051 6.44 92.6 -- MW-20 O&M A 2/14/17 10.35 4.95 5.40 -- 989 7.51 44.6 0.11 MW-20 O&M A 2/11/19 10.35 5.38 4.97 -- 1,224 6.72 49.4 0.31 MW-21 A 3/21/06 13.24 6.67 6.57 -- 1,161 -- -- --
MW-21 A 3/27/06 13.24 6.51 6.73 -- 1,252 -- 130.8 1.57
MW-21 A 6/14/06 13.24 7.97 5.27 -- 1,155 6.35 63.7 0.06 MW-21 A 9/20/06 13.24 8.26 4.98 -- 1,133 6.79 48.0 1.36 MW-21 A 1/30/07 13.24 7.83 5.41 -- -- -- -- --
MW-21 A 2/1/07 13.24 7.96 5.28 -- 2,032 10.87 -157.0 4.44 MW-21 A 5/8/07 13.24 7.82 5.42 -- 1,113 6.65 88.7 1.69
MW-21 A 8/15/07 13.24 8.32 4.92 -- 1,132 6.61 41.2 0.45 MW-21 A 11/14/07 13.24 7.96 5.28 -- -- -- -- --
MW-21 A 2/5/08 13.24 6.96 6.28 -- 1,120 6.56 -20.8 1.45 MW-21 A 8/5/08 13.24 8.32 4.92 -- -- -- -- --
MW-21 A 11/6/08 13.24 7.95 5.29 -- -- -- -- --
MW-21 A 2/3/09 13.24 7.58 5.66 -- 1,190 6.79 61.5 1.71
MW-21 A 5/6/09 13.24 7.75 5.49 -- -- -- -- --
MW-21 A 8/5/09 13.24 8.32 4.92 -- -- -- -- --
MW-21 A 11/4/09 13.24 7.93 5.31 -- -- -- -- --
MW-21 A 2/1/10 13.24 6.84 6.40 -- 1,163 6.67 59.4 1.21
MW-21 A 8/3/10 13.24 8.16 5.08 -- -- -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 10 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
MW-21 A 2/8/11 13.24 7.90 5.34 -- 1,163 6.67 -61 0.24
MW-21 O&M A 2/13/13 13.24 8.08 5.16 -- 1,093 6.53 -231.8 1.85 MW-21 O&M A 6/11/15 13.24 8.16 5.08 -- 890 5.94 101.1 -- MW-21 Sup. A 2/23/16 13.24 7.80 5.44 -- 1,067 6.70 27.8 0.74 MW-21 O&M A 2/14/17 13.24 6.55 6.69 -- 903 6.92 134.9 0.12 MW-21 O&M A 2/11/19 13.24 6.95 6.29 -- 1,043 6.61 23.9 0.26 MW-24 A 3/21/06 11.76 4.24 7.52 -- 794 -- -- --
MW-24 A 3/27/06 11.76 4.05 7.71 -- 924 -- 106.3 2.05
MW-24 A 6/14/06 11.76 5.83 5.93 -- 516 6.65 62.8 0.12
MW-24 A 9/20/06 11.76 6.20 5.56 -- 790 8.90 -278.6 0.24 MW-24 A 1/30/07 11.76 5.69 6.07 -- -- -- -- --
MW-24 A 2/1/07 11.76 5.79 5.97 -- 1,560 11.15 -123.7 3.85 MW-24 A 5/8/07 11.76 5.77 5.99 -- 760 6.85 -43.6 1.24
MW-24 A 8/14/07 11.76 6.28 5.48 -- -- -- -- --
MW-24 A 11/13/07 11.76 5.82 5.94 -- -- -- -- --
MW-24 A 2/6/08 11.76 4.34 7.42 -- 746 6.84 -13.7 0.88
MW-24 A 2/3/09 11.76 5.82 5.94 -- 1,364 6.95 -39.7 0.45 MW-24 A 2/2/10 11.76 4.44 7.32 -- 787 6.84 2.3 0.28
MW-24 A 2/8/11 11.76 5.68 6.08 -- 754 7.01 -81 0.10
MW-24 A 2/7/12 11.76 5.68 6.08 -- -- -- -- --
MW-24 O&M A 2/14/13 11.76 5.91 5.85 -- -- -- -- --
MW-24 O&M A 2/25/14 11.76 5.96 5.80 -- -- -- -- --
MW-24 O&M A 2/14/17 11.76 4.10 7.66 -- -- -- -- --
MW-24 O&M A 2/14/18 11.76 5.76 6.00 -- -- -- -- --
MW-24 O&M A 2/11/19 11.76 4.43 7.33 -- -- -- -- --
MW-24 O&M A 3/11/20 11.76 5.03 6.73 -- -- -- -- --
MW-25 A 3/21/06 11.46 4.14 7.32 -- 1,678 -- -- --
MW-25 A 3/27/06 11.46 4.20 7.26 -- 1,159 -- 108.5 2.61
MW-25 A 6/14/06 11.46 5.55 5.91 -- 986 6.89 60.1 0.35
MW-25 A 9/20/06 11.46 6.06 5.40 -- 910 7.09 -77.6 0.16
MW-25 A 1/30/07 11.46 5.76 5.70 -- -- -- -- --
MW-25 A 2/1/07 11.46 5.69 5.77 -- 2,013 9.91 132.3 4.19 MW-25 A 5/8/07 11.46 5.92 5.54 -- 881 6.88 -88.0 0.81
MW-25 A 8/14/07 11.46 5.82 5.64 -- -- -- -- --
MW-25 A 11/13/07 11.46 5.67 5.79 -- -- -- -- --
MW-25 A 2/5/08 11.46 5.00 6.46 -- 961 7.29 13.7 2.72
MW-25 A 2/3/09 11.46 5.45 6.01 -- 1,718 7.05 -59.1 0.67 MW-25 A 5/20/09 11.46 5.77 5.69 -- 947 -- -- --
MW-25 A 6/4/09 11.46 5.75 5.71 -- 962 -- -- --
MW-25 A 8/4/09 11.46 6.23 5.23 -- 875 -- -- --
MW-25 A 2/2/10 11.46 4.30 7.16 -- 918 6.85 23.1 0.61
MW-25 A 2/8/11 11.46 5.55 5.91 -- 925 7.03 -75 0.12
MW-25 O&M A 2/14/13 11.46 5.75 5.71 -- 713 6.96 -156.4 0.59 MW-25 O&M A 6/10/15 11.46 6.13 5.33 -- 745 6.54 68.7 -- MW-25 O&M A 2/13/17 11.46 5.10 6.36 -- 667 7.51 64.4 0.14 MW-25 O&M A 2/11/19 11.46 5.06 6.40 -- 863 7.18 -25.8 0.42 LMW-3 UB 9/22/98 15.36 10.78 4.58 -- -- -- 181.5 4.52
LMW-3 UB 12/9/98 15.36 10.22 5.14 -- -- -- -- --
LMW-3 UB 12/10/98 15.36 -- -- -- -- -- 214.0 10.87
LMW-3 UB 3/22/99 15.36 9.88 5.48 -- -- -- -- --
LMW-3 UB 6/21/99 15.36 10.68 4.68 -- -- -- -- --
LMW-3 UB 9/20/99 15.36 10.88 4.48 -- -- -- -- --
LMW-3 UB 12/13/99 15.36 10.53 4.83 -- -- -- -- --
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 11 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
LMW-3 UB 3/13/00 15.36 9.57 5.79 -- -- -- -- --
LMW-3 UB 9/18/00 15.36 10.67 4.69 -- -- -- -- --
LMW-3 UB 3/12/01 15.36 10.03 5.33 -- 883 -- -- --
LMW-3 UB 9/24/01 15.36 10.85 4.51 -- -- -- -- --
LMW-3 UB 3/26/02 15.36 9.83 5.53 -- -- -- -- --
LMW-3 UB 10/3/02 15.36 12.05 3.31 -- 1,080 -- -- --
LMW-3 UB 3/26/03 15.36 10.37 4.99 -- 954 -- -- --
LMW-3 UB 6/26/03 15.36 10.53 4.83 -- -- -- 75.9 1.51
LMW-3 UB 9/23/03 15.36 10.78 4.58 -- -- -- -- --
LMW-3 UB 12/16/03 15.36 10.10 5.26 -- -- -- -- --
LMW-3 UB 3/9/04 12.88 7.71 5.17 -- 867 -- 115.3 3.74
LMW-3 UB 5/20/04 12.88 8.11 4.77 -- -- -- -- --
LMW-3 UB 9/29/04 12.88 8.26 4.62 -- -- -- -- --
LMW-3 UB 12/8/04 12.88 7.39 5.49 -- -- -- -- --
LMW-3 UB 3/8/05 12.88 7.42 5.46 -- -- -- -- --
LMW-3 UB 3/10/05 12.88 -- -- -- 858 -- 16.3 3.74
LMW-3 UB 6/14/05 12.88 7.86 5.02 -- -- -- -- --
LMW-3 UB 9/14/05 12.88 8.30 4.58 -- -- -- -- --
LMW-3 UB 12/14/05 12.88 8.11 4.77 -- -- -- --
LMW-3 UB 3/15/06 12.88 7.13 5.75 -- 902 -- 126.5 2.50
LMW-3 UB 6/13/06 12.88 7.97 4.91 -- -- -- -- --
LMW-3 UB 9/20/06 12.88 8.15 4.73 -- -- -- -- --
LMW-3 UB 1/30/07 12.88 7.89 4.99 -- -- -- -- --
LMW-3 UB 2/1/07 12.88 -- -- -- 926 7.05 50.0 2.35
LMW-3 UB 8/14/07 12.88 8.68 4.20 -- -- -- -- --
LMW-3 UB 2/4/08 12.88 7.87 5.01 -- 968 7.29 -33.3 2.28
LMW-3 UB 5/6/08 12.88 7.97 4.91 -- -- -- -- --
LMW-3 UB 8/5/08 12.88 8.21 4.67 -- -- -- -- --
LMW-3 UB 11/6/08 12.88 8.05 4.83 -- -- -- -- --
LMW-3 UB 2/2/09 12.88 8.17 4.71 -- 1,040 7.21 69.6 2.72 LMW-3 UB 5/6/09 12.88 7.84 5.04 -- -- -- -- --
LMW-3 UB 8/24/09 12.88 8.30 4.58 -- -- -- -- --
LMW-3 UB 11/4/09 12.88 8.09 4.79 -- -- -- -- --
LMW-3 UB 2/1/10 12.88 7.36 5.52 -- 970 7.04 64.7 1.42
LMW-3 UB 5/4/10 12.88 7.90 4.98 -- -- -- -- --
LMW-3 UB 8/3/10 12.88 8.14 4.74 -- -- -- -- --
LMW-3 UB 2/8/11 12.88 7.96 4.92 -- 955 7.07 -72 1.25
LMW-3 UB 2/7/12 12.88 7.95 4.93 -- -- -- -- --
LMW-3 O&M UB 2/12/13 12.88 8.12 4.76 -- 893 7.01 220.6 2.92 LMW-3 O&M UB 2/25/14 12.88 8.35 4.53 -- -- -- -- --
LMW-3 O&M UB 6/9/15 12.88 8.42 4.46 -- 764 6.24 154.7 -- LMW-3 O&M UB 2/23/16 12.88 8.02 4.86 -- -- -- -- --
LMW-3 Sup. UB 9/22/16 12.88 8.45 4.43 -- 951 7.16 140.1 1.87 LMW-3 O&M UB 2/14/17 12.88 7.50 5.38 -- 1,013 7.44 19.2 0.73 LMW-3 Sup. UB 2/13/18 12.88 7.94 4.94 -- 887 7.05 54.6 2.64 LMW-3 O&M UB 2/11/19 12.88 7.79 5.09 -- 918 7.26 -11.3 0.78 LMW-3 O&M UB 3/10/20 12.88 8.23 4.65 -- 915 7.53 54.0 4.16 LMW-5 B 6/26/03 12.93 7.79 5.14 -- 991 -- 168.2 0.66
LMW-5 B 3/9/04 12.93 7.07 5.86 -- -- -- -- --
LMW-5 B 3/10/04 12.93 -- -- -- 666 -- -79.9 0.59
LMW-5 B 9/29/04 12.93 7.53 5.40 -- 563 -- 68.4 0.24
LMW-5 B 3/8/05 12.93 6.70 6.23 -- -- -- -- --
LMW-5 B 3/10/05 12.93 -- -- -- 685 -- 5.9 0.34
LMW-5 B 9/14/05 12.93 7.97 4.96 -- 707 -- -343.8 0.61
LMW-5 B 9/20/06 12.93 7.63 5.30 -- 800 8.02 -144.1 0.30 LMW-5 B 1/30/07 12.93 7.58 5.35 -- -- -- -- --
LMW-5 B 2/2/07 12.93 7.47 5.46 -- 1,760 9.41 -4.2 2.83
LMW-5 B 8/15/07 12.93 7.92 5.01 -- 782 6.97 -26.5 0.10
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 12 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
LMW-5 B 11/14/07 12.93 7.60 5.33 -- -- -- -- --
LMW-5 B 2/5/08 12.93 6.78 6.15 -- 772 7.00 -104.2 0.68
LMW-5 B 2/3/09 12.93 7.54 5.39 -- 813 7.09 81.7 0.59
LMW-5 B 2/1/10 12.93 6.44 6.49 -- 759 6.99 84.8 2.58
LMW-5 B 2/8/11 12.93 7.42 5.51 -- 759 7.22 -74 0.16
LMW-5 O&M B 2/14/13 12.93 7.54 5.39 -- 684 7.03 -109.2 4.94 LMW-5 O&M B 6/10/15 12.93 7.35 5.58 -- 588 6.92 217.1 -- LMW-5 O&M B 2/14/17 12.93 6.70 6.23 -- 576 7.96 96.3 0.18 LMW-5 O&M B 2/11/19 12.93 6.65 6.28 -- 689 7.00 152.0 0.20 LMW-7 UB 3/27/06 14.12 11.80 2.32 -- 1,240 -- 79.5 3.75 LMW-7 UB 6/14/06 14.12 9.51 4.61 -- 1,022 7.09 -51.0 1.21 LMW-7 UB 9/20/06 14.12 8.90 5.22 -- 1,045 8.49 -192.3 0.49 LMW-7 UB 1/30/07 14.12 12.57 1.55 -- -- -- -- --
LMW-7 UB 2/1/07 14.12 -- -- -- 894 7.07 10.3 0.52
LMW-7 UB 5/8/07 14.12 8.74 5.38 -- 896 6.89 107.2 1.99
LMW-7 UB 2/5/08 14.12 8.45 5.67 -- 933 6.85 -48.1 0.87
LMW-7 UB 2/3/09 14.12 9.09 5.03 -- 966 7.13 -6.7 0.85
LMW-7 UB 2/1/10 14.12 8.29 5.83 -- 895 7.08 37.0 0.81
LMW-7 UB 2/8/11 14.12 8.81 5.31 -- 893 7.13 -104 0.10
LMW-7 O&M UB 2/14/13 14.12 8.99 5.13 -- 806 7.17 -129.8 3.98 LMW-7 O&M UB 6/10/15 14.12 7.35 6.77 -- 756 6.98 178.7 -- LMW-7 O&M UB 2/13/17 14.12 8.15 5.97 -- 680 8.12 84.7 0.36 LMW-7 O&M UB 2/11/19 14.12 8.46 5.66 -- 816 7.18 -62.4 0.67 SAZ-1 C 9/22/98 11.50 4.43 7.07 -- -- -- -- --
SAZ-1 C 9/23/98 11.50 -- -- -- -- -- 101.3 1.04
SAZ-1 C 12/9/98 11.50 4.12 7.38 -- -- -- -- --
SAZ-1 C 12/10/98 11.50 -- -- -- -- -- 153.0 4.38
SAZ-1 C 1/14/99 11.50 4.81 6.69 -- -- -- -- --
SAZ-1 C 3/22/99 11.50 3.42 8.08 -- -- -- -- --
SAZ-1 C 6/21/99 11.50 4.88 6.62 -- -- -- -- --
SAZ-1 C 9/20/99 11.50 5.04 6.46 -- -- -- -- --
SAZ-1 C 12/13/99 11.50 4.43 7.07 -- -- -- -- --
SAZ-1 C 3/13/00 11.50 2.59 8.91 -- -- -- -- --
SAZ-1 C 9/18/00 11.50 4.55 6.95 -- -- -- -- --
SAZ-1 C 3/12/01 11.50 3.47 8.03 -- 617 -- -- --
SAZ-1 C 9/24/01 11.50 4.94 6.56 -- -- -- -- --
SAZ-1 C 3/26/02 11.50 3.57 7.93 -- -- -- -- --
SAZ-1 C 10/3/02 11.50 5.24 6.26 -- 690 -- -- --
SAZ-1 C 3/26/03 11.50 4.28 7.22 -- 665 -- -18.6 0.54
SAZ-1 C 6/26/03 11.50 4.69 6.81 -- 642 -- 147.9 1.08
SAZ-1 C 9/23/03 11.50 4.94 6.56 -- 676 -- -9.1 0.43
SAZ-1 C 12/16/03 11.50 3.92 7.58 -- 573 -- 221.7 0.31
SAZ-1 C 3/9/04 11.50 3.64 7.86 -- 570 -- 27.1 0.58
SAZ-1 C 5/20/04 11.50 4.00 7.50 -- 666 -- 19.8 0.37
SAZ-1 C 9/29/04 11.50 4.79 6.71 -- 624 -- -12.1 1.02
SAZ-1 C 12/8/04 11.50 3.58 7.92 -- 580 -- -3.9 0.45
SAZ-1 C 3/8/05 11.50 3.05 8.45 -- 420 -- -36.7 0.67
SAZ-1 C 6/14/05 11.50 3.97 7.53 -- 582 -- -100.6 1.23
SAZ-1 C 9/14/05 11.50 4.57 6.93 -- 586 -- -9.5 2.46
SAZ-1 C 12/16/05 11.50 3.91 7.59 -- 672 -- 22.6 0.53
SAZ-1 C 3/15/06 11.50 2.33 9.17 -- 600 -- 120.9 2.00
SAZ-1 C 6/14/06 11.50 3.51 7.99 -- 596 6.65 56.9 0.47
SAZ-1 C 9/20/06 11.50 4.00 7.50 -- 653 7.60 -66.3 0.54
SAZ-1 C 1/30/07 11.50 3.74 7.76 -- -- -- -- --
SAZ-1 C 1/31/07 11.50 -- -- -- 569 6.93 61.3 0.71
SAZ-1 C 5/8/07 11.50 3.74 7.76 -- 618 6.79 160.9 3.01
SAZ-1 C 8/14/07 11.50 4.33 7.17 -- 650 6.67 -31.2 0.51
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 13 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
SAZ-1 C 11/13/07 11.50 3.97 7.53 -- 597 6.90 320.0 0.89 SAZ-1 C 2/4/08 11.50 2.58 8.92 -- 655 6.90 142.3 0.62
SAZ-1 C 5/7/08 11.50 3.94 7.56 -- -- -- -- --
SAZ-1 C 8/5/08 11.50 4.33 7.17 -- -- -- -- --
SAZ-1 C 11/6/08 11.50 4.03 7.47 -- -- -- -- --
SAZ-1 C 2/2/09 11.50 4.10 7.40 -- 714 6.95 149.8 1.47
SAZ-1 C 5/6/09 11.50 3.66 7.84 -- -- -- -- --
SAZ-1 C 8/4/09 11.50 4.39 7.11 -- -- -- -- --
SAZ-1 C 11/4/09 11.50 3.99 7.51 -- -- -- -- --
SAZ-1 C 2/2/10 11.50 2.88 8.62 -- 643 6.80 55.1 0.42
SAZ-1 C 5/4/10 11.50 3.52 7.98 -- -- -- -- --
SAZ-1 C 8/3/10 11.50 4.12 7.38 -- -- -- -- --
SAZ-1 C 2/8/11 11.50 3.70 7.80 -- 641 7.03 -89 0.19
SAZ-1 C 2/7/12 11.50 3.93 7.57 -- -- -- -- --
SAZ-1 O&M C 2/12/13 11.50 4.12 7.38 -- -- -- -- --
SAZ-1 O&M C 2/25/14 11.50 4.28 7.22 -- -- -- -- --
SAZ-1 O&M C 6/9/15 11.50 4.36 7.14 -- -- -- -- --
SAZ-1 O&M C 2/23/16 11.50 3.60 7.90 -- -- -- -- --
SAZ-1 O&M C 2/13/17 11.50 2.00 9.50 -- -- -- -- --
SAZ-1 O&M C 2/13/18 11.50 3.74 7.76 -- -- -- -- --
SAZ-1 O&M C 2/11/19 11.50 2.83 8.67 -- -- -- -- --
SAZ-1 O&M C 3/10/20 11.50 4.05 7.45 -- -- -- -- --
SAZ-2 C 9/22/98 9.45 4.27 5.18 -- -- -- -- --
SAZ-2 C 9/23/98 9.45 -- -- -- -- -- 15.2 2.68
SAZ-2 C 12/9/98 9.45 3.61 5.84 -- -- -- -- --
SAZ-2 C 12/10/98 9.45 -- -- -- -- -- 153.0 7.82
SAZ-2 C 1/14/99 9.45 4.31 5.14 -- -- -- -- --
SAZ-2 C 3/22/99 9.45 3.18 6.27 -- -- -- -- --
SAZ-2 C 6/21/99 9.45 4.37 5.08 -- -- -- -- --
SAZ-2 C 9/20/99 9.45 4.62 4.83 -- -- -- -- --
SAZ-2 C 12/13/99 9.45 4.08 5.37 -- -- -- -- --
SAZ-2 C 3/13/00 9.45 2.62 6.83 -- -- -- -- --
SAZ-2 C 9/18/00 9.45 4.22 5.23 -- -- -- -- --
SAZ-2 C 3/12/01 9.45 3.39 6.06 -- 460 -- -- --
SAZ-2 C 9/24/01 9.45 4.65 4.80 -- -- -- -- --
SAZ-2 C 3/26/02 9.45 3.53 5.92 -- -- -- -- --
SAZ-2 C 10/3/02 9.45 5.03 4.42 -- 557 -- -- --
SAZ-2 C 3/26/03 9.45 6.53 2.92 -- 468 -- -24.6 1.16
SAZ-2 C 6/26/03 9.45 4.47 4.98 -- -- -- -- --
SAZ-2 C 9/23/03 9.45 4.80 4.65 -- -- -- -- --
SAZ-2 C 12/16/03 9.45 3.85 5.60 -- -- -- -- --
SAZ-2 C 3/9/04 9.45 3.65 5.80 -- -- -- -- --
SAZ-2 C 3/10/04 9.45 -- -- -- 473 -- 13.1 1.83
SAZ-2 C 5/20/04 9.45 4.28 5.17 -- -- -- -- --
SAZ-2 C 9/29/04 9.45 4.65 4.80 -- -- -- -- --
SAZ-2 C 12/8/04 9.45 4.10 5.35 -- -- -- -- --
SAZ-2 C 3/8/05 9.45 3.34 6.11 -- 299 -- -48.3 1.27
SAZ-2 C 6/14/05 9.45 3.66 5.79 -- -- -- -- --
SAZ-2 C 9/14/05 9.45 3.90 5.55 -- -- -- -- --
SAZ-2 C 12/14/05 9.45 4.13 5.32 -- -- -- -- --
SAZ-2 C 3/15/06 9.45 3.08 6.37 -- 448 -- 40.8 2.80
SAZ-2 C 6/13/06 9.45 3.77 5.68 -- -- -- -- --
SAZ-2 C 9/20/06 9.45 3.72 5.73 -- -- -- -- --
SAZ-2 C 1/30/07 9.45 3.98 5.47 -- 494 7.40 -36.9 0.98
SAZ-2 C 5/9/07 9.45 3.80 5.65 -- -- -- -- --
SAZ-2 C 8/14/07 9.45 4.41 5.04 -- -- -- -- --
SAZ-2 C 11/14/07 9.45 4.32 5.13 -- -- -- -- --
SAZ-2 C 2/4/08 9.45 3.41 6.04 -- 533 7.53 -25.0 2.21
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 14 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
SAZ-2 C 5/6/08 9.45 4.29 5.16 -- -- -- -- --
SAZ-2 C 8/5/08 9.45 4.47 4.98 -- -- -- -- --
SAZ-2 C 11/6/08 9.45 4.22 5.23 -- -- -- -- --
SAZ-2 C 2/2/09 9.45 4.12 5.33 -- 525 7.45 -18.0 1.65
SAZ-2 C 5/6/09 9.45 3.65 5.80 -- -- -- -- --
SAZ-2 C 8/4/09 9.45 4.53 4.92 -- -- -- -- --
SAZ-2 C 8/25/09 9.45 4.68 4.77 -- -- -- -- --
SAZ-2 C 11/4/09 9.45 4.05 5.40 -- -- -- -- --
SAZ-2 C 2/3/10 9.45 3.13 6.32 -- 534 7.42 22.6 0.91
SAZ-2 C 5/4/10 9.45 3.46 5.99 -- -- -- -- --
SAZ-2 C 8/3/10 9.45 4.38 5.07 -- -- -- -- --
SAZ-2 C 2/8/11 9.45 3.72 5.73 -- 406 6.94 -89.7 1.18
SAZ-2 C 2/7/12 9.45 3.24 6.21 -- -- -- -- --
SAZ-2 O&M C 2/12/13 9.45 3.83 5.62 -- -- -- -- --
SAZ-2 O&M C 2/26/14 9.45 3.50 5.95 -- -- -- -- --
SAZ-2 O&M C 6/9/15 9.45 4.62 4.83 -- -- -- -- --
SAZ-2 O&M C 2/24/16 9.45 4.43 5.02 -- -- -- -- --
SAZ-2 O&M C 2/15/17 9.45 2.60 6.85 -- -- -- -- --
SAZ-2 O&M C 2/14/18 9.45 3.77 5.68 -- -- -- -- --
SAZ-2 O&M C 9/10/18 9.45 4.50 4.95 -- 391 7.55 -21.2 -- SAZ-2 O&M C 2/12/19 9.45 3.64 5.81 -- -- -- -- --
SAZ-2 O&M C 3/11/20 9.45 4.30 5.15 -- -- -- -- --
SAZ-3 C 9/22/98 12.16 5.14 7.02 -- -- -- 228.3 0.93
SAZ-3 C 12/9/98 12.16 5.30 6.86 -- -- -- -- --
SAZ-3 C 12/10/98 12.16 -- -- -- -- -- 248.0 8.30
SAZ-3 C 1/14/99 12.16 5.93 6.23 -- -- -- -- --
SAZ-3 C 3/22/99 12.16 4.61 7.55 -- -- -- -- --
SAZ-3 C 6/21/99 12.16 5.97 6.19 -- -- -- -- --
SAZ-3 C 9/20/99 12.16 6.17 5.99 -- -- -- -- --
SAZ-3 C 12/13/99 12.16 5.53 6.63 -- -- -- -- --
SAZ-3 C 3/13/00 12.16 3.84 8.32 -- -- -- -- --
SAZ-3 C 9/18/00 12.16 5.69 6.47 -- -- -- -- --
SAZ-3 C 3/12/01 12.16 4.70 7.46 -- 643 -- -- --
SAZ-3 C 9/24/01 12.16 6.10 6.06 -- -- -- -- --
SAZ-3 C 3/26/02 12.16 4.83 7.33 -- -- -- -- --
SAZ-3 C 10/3/02 12.16 6.49 5.67 -- 790 -- -- --
SAZ-3 C 3/26/03 12.16 5.55 6.61 -- 664 -- 87.5 1.20
SAZ-3 C 6/26/03 12.16 5.95 6.21 -- -- -- -- --
SAZ-3 C 9/23/03 12.16 6.16 6.00 -- -- -- -- --
SAZ-3 C 12/16/03 12.16 5.12 7.04 -- -- -- -- --
SAZ-3 C 3/9/04 12.91 5.73 7.18 -- 585 -- 141.3 0.75
SAZ-3 C 5/20/04 12.91 6.08 6.83 -- -- -- -- --
SAZ-3 C 9/29/04 12.91 6.80 6.11 -- -- -- -- --
SAZ-3 C 12/8/04 12.91 6.22 6.69 -- -- -- -- --
SAZ-3 C 3/8/05 12.91 5.15 7.76 -- -- -- -- --
SAZ-3 C 3/10/05 12.91 -- -- -- 588 -- 5.5 0.43
SAZ-3 C 6/14/05 12.91 6.01 6.90 -- -- -- -- --
SAZ-3 C 9/14/05 12.91 6.60 6.31 -- -- -- -- --
SAZ-3 C 12/14/05 12.91 6.01 6.90 -- -- -- -- --
SAZ-3 C 3/15/06 12.91 4.47 8.44 -- 543 -- 125.4 1.47
SAZ-3 C 6/13/06 12.91 6.11 6.80 -- -- -- -- --
SAZ-3 C 9/20/06 12.91 6.20 6.71 -- -- -- -- --
SAZ-3 C 1/30/07 12.91 5.79 7.12 -- -- -- -- --
SAZ-3 C 1/31/07 12.91 -- -- -- 594 6.74 84.9 0.53
SAZ-3 C 5/8/07 12.91 5.88 7.03 -- 619 6.79 140.3 3.71
SAZ-3 C 8/14/07 12.91 6.42 6.49 -- -- -- -- --
SAZ-3 C 11/14/07 12.91 6.10 6.81 -- -- -- -- --
SAZ-3 C 2/4/08 12.91 4.66 8.25 -- 633 6.87 136.4 0.70
Table 6H
Groundwater Elevation Data, Field Measurements and Other Analyses Monitored Natural Attenuation and Destroyed/Not Used Wells Former Kaiser Aerotech Facilities
San Leandro, California

Page 15 of 15 ends

Top of Casing Depth to Groundwater Dissolved
Elevation Groundwater Elevation pH ORP Oxygen
field field field field
(ft msl) (ft BTOC) (ft msl) (mg/L) (µS/cm) (mV) (mg/L)
Monitoring
Well Notes GW Zone
Specific
conductance TOCNote 1
Date
SAZ-3 C 5/6/08 12.91 6.03 6.88 -- -- -- -- --
SAZ-3 C 8/5/08 12.91 6.40 6.51 -- -- -- -- --
SAZ-3 C 11/6/08 12.91 6.17 6.74 -- -- -- -- --
SAZ-3 C 2/2/09 12.91 6.10 6.81 -- 720 6.87 149.8 0.92
SAZ-3 C 5/6/09 12.91 5.74 7.17 -- -- -- -- --
SAZ-3 C 8/4/09 12.91 6.41 6.50 -- -- -- -- --
SAZ-3 C 8/24/09 12.91 6.52 6.39 -- -- -- -- --
SAZ-3 C 11/4/09 12.91 6.05 6.86 -- -- -- -- --
SAZ-3 C 2/1/10 12.91 4.85 8.06 -- 650 6.85 80.9 0.79
SAZ-3 C 5/4/10 12.91 5.62 7.29 -- -- -- -- --
SAZ-3 C 8/3/10 12.91 6.17 6.74 -- -- -- -- --
SAZ-3 C 2/8/11 12.91 5.73 7.18 -- 713 7.16 -110 0.36
SAZ-3 C 2/7/12 12.91 5.92 6.99 -- -- -- -- --
SAZ-3 O&M C 2/12/13 12.91 6.28 6.63 -- -- -- -- --
SAZ-3 O&M C 2/25/14 12.91 6.23 6.68 -- -- -- -- --
SAZ-3 O&M C 6/9/15 12.91 6.40 6.51 -- -- -- -- --
SAZ-3 O&M C 2/23/16 12.91 5.64 7.27 -- -- -- -- --
SAZ-3 O&M C 2/14/17 12.91 4.10 8.81 -- -- -- -- --
SAZ-3 O&M C 2/13/18 12.91 5.78 7.13 -- -- -- -- --
SAZ-3 O&M C 2/11/19 12.91 4.85 8.06 -- -- -- -- --
SAZ-3 O&M C 3/10/20 12.91 6.13 6.78 -- -- -- -- --
Notes:

GW Zone Groundwater Zone Results may reflect influence of noted pilot/field test activities:

A A-zone - approximately 5-15 feet bgs PT Pumping Test
UB Upper B-zone - approximately 15-25 feet bgs GWE Groundwater Extraction LB Lower B-zone - approximately 25-35 feet bgs ISCO Mn Permanganate Injection Test C C-zone - below approximately 35-40 feet bgs ISCO FR Modified Fenton's Reagent Pilot Test TOC Total Organic Carbon DPE High Vacuum Dual Phase Extraction bgs Below ground surface ERD Enhanced Reductive Dechlorination using Sodium Lactate ft BTOC Feet below top of casing RDIP
ft msl Elevation in feet relative to mean sea level
Inc. Inconclusive O&M Operation and Maintenance Plan Monitoring Program mg/L milligrams per liter Sup.
mV millivolts
µS/cm microsiemens per centimeter 1
-- Not reported
Note 1 2 Wells MW-2, MW-8, MW-10, MW-14 and MC-1 destroyed in May 2009. 3 Results may reflect influence of ERD outlined in the Remedial Design and Implementation Plan RDIP, April 28, 2008)
Supplemental sampling to evaluate concentration trends from upgradient offsite source(s)
Well IW-1 was reconstructed as B-zone well IW-2 in 2000. Well IW-2 was destroyed in June 2003.

Well MW-8 was reported as abandoned in March 1997 (SECOR, 1997); found during construction activities in October 2003.

TOC was analyzed by EPA Method 415.1 or Standard Method (SM) 5310D prior to 2015, SM5310D in 2016, SM5310B in
2015 and 2017,
APPENDIX C5

HISTORICAL SUBSLAB VAPOR, INDOOR AIR, AND SOIL VAPOR DATA MW-1 MW-11 MW-12 MW-13 MW-15 MW-16 MW-17 MW-18 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-26 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8A MW-9PZ-2 MW-28 MW-29 FA-1 IA-1 IA-13 VP-1 AA-1 AA-2 AA-3 VP-4 IA-4 VP-3 IA-3 VP-2 IA-2 VP-5 IA-5 VP-6 IA-6 VP-9 IA-9 VP-11 IA-11 VP-12 IA-12IA-10 VP-10VP-8 IA-8 VP-7 IA-7 LEGENDFormer Kaiser Aerotech Facilities Boundary INDOOR AIR AND SUBSLAB VAPOR SAMPLE RESULTS 100500 Scale (feet) 3 After Apex, 2017 Basemap from Secor, June 25, 2002 N FORMER KAISER AEROTECH FACILITIES 880 DOOLITTLE DRIVE & 498 HESTER STREET SAN LEANDRO, CALIFORNIA 05/18/20 DATE FIGURE IA-1 VP-1 AA-1 A-zone Monitoring Well Subslab Vapor Sample Location (April 16, 2020) Indoor Air Sample Location (April 15, 2020) Ambient Air Sample Location (April 15, 2020) 4/2020 PCE TCE Benzene IA-1 <0.136 0.259 0.744 VP-1 2.25 330 <0.639 4/2020 PCE TCE Benzene IA-2 <0.136 0.247 0.744 VP-2 509 245 0.795 The same analyte is found on the associated blank. The reported value is an estimate. BZ1 Notes: 1. All results reported in micrograms per cubic meter (µg/m³). 2. Where duplicate samples are analyzed, highest concentration reported. 3. Concentrations above commercial/industrial screening levels are shaded. 4. In order of priority, indoor air screening level represents DTSC screening level (April 2019) or USEPA Regional Screening Level (November 2019). 5. Subslab vapor screening level represents indoor air screening level divided by attenuation factor of 0.03. 4/2020 PCE TCE Benzene IA-3 <0.136 0.269 0.783 VP-3 4.13 729 1.59 4/2020 PCE TCE Benzene IA-4 <0.136 0.279 0.767 VP-4 6.06 2,190 E 0.862 4/2020 PCE TCE Benzene IA-5 <0.136 0.713 0.696 VP-5 4.00 46.2 0.735 4/2020 PCE TCE Benzene IA-6 <0.136 0.350 0.735 VP-6 18.1 14,200 1.75 4/2020 PCE TCE Benzene IA-7 <0.136 0.519 0.901 VP-7 287 17,500 1.69 4/2020 PCE TCE Benzene IA-8 <0.136 0.520 0.971 VP-8 3.59 638 0.731 4/2020 PCE TCE Benzene IA-9 <0.136 1.27 0.866 VP-9 1.67 408 <0.639 4/2020 PCE TCE Benzene IA-10 <0.136 0.563 Z1 0.757 VP-10 2.75 287 <0.639 4/2020 PCE TCE Benzene IA-11 <0.136 0.377 0.562 VP-11 23.8 196 <0.639 4/2020 PCE TCE Benzene IA-12 <0.679 <0.536 0.719 B VP-12 7.60 11.4 <0.639 4/2020 PCE TCE Benzene IA-13 <0.136 <0.107 0.498 4/2020 PCE TCE Benzene AA-1 <0.136 <0.107 0.668 4/2020 PCE TCE Benzene AA-2 <0.136 <0.107 0.457 4/2020 PCE TCE Benzene AA-3 <0.136 <0.107 0.396 B The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration E Screening Level PCE TCE Benzene Indoor Air 2.0 3.0 0.42 Subslab Vapor 67 100 14 Commercial/Industrial Screening Levels Table 1
Summary of Indoor Air Analytical Results - VOCs
Former Kaiser Aerotech Facilities
880 Doolittle Drive and 498 Hester Street
San Leandro, California

Page 1 of 1 ends

PCE TCE cis1,2-DCE
trans1,2-DCE 1,1-DCE Vinyl
Chloride Benzene Toluene Ethylbenzene TotalXylenes
Carbon
Tetrachloride Chloromethane 1,2-DCA
(µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3)

2.0 3.0 35 350 310 0.16 0.42 1,300 4.9 440 2.0 390 0.47 -- 8.0 / 24 -- -- -- -- -- -- -- -- -- -- --
IA-1 4/15/2020 <0.136 0.259 <0.0793 <0.0793 <0.0793 <0.0511 0.744 -- 0.408 -- 0.477 1.10 0.0984 IA-2 4/15/2020 Within <0.136 0.247 <0.0793 <0.0793 <0.0793 <0.0511 0.744 -- 0.387 -- 0.464 1.05 0.098 IA-3 4/15/2020 <0.136 0.269 <0.0793 <0.0793 <0.0793 <0.0511 0.783 -- 0.431 -- 0.488 1.16 0.0862 4/15/2020 Within <0.136 0.279 <0.0793 <0.0793 <0.0793 <0.0511 0.767 -- 0.316 -- 0.464 1.02 0.0915 4/15/2020 Duplicate <0.136 0.265 <0.0793 <0.0793 <0.0793 <0.0511 0.620 -- 0.274 -- 0.534 1.16 0.113 IA-5 4/15/2020 <0.136 0.713 <0.0793 <0.0793 <0.0793 <0.0511 0.696 -- 0.323 -- 0.496 1.05 0.0911 IA-6 4/15/2020 Near <0.136 0.350 0.111 <0.0793 <0.0793 <0.0511 0.735 -- 0.338 -- 0.468 1.04 0.0871 IA-7 4/15/2020 <0.136 0.519 <0.0793 <0.0793 <0.0793 <0.0511 0.901 -- 0.429 -- 0.592 1.25 0.132 IA-8 4/15/2020 <0.136 0.520 <0.0793 <0.0793 <0.0793 <0.0511 0.971 -- 0.430 -- 0.535 1.28 0.113 IA-9 4/15/2020 <0.136 1.27 0.100 <0.0793 <0.0793 <0.0511 0.866 -- 0.409 -- 0.537 1.24 0.113 IA-10 4/15/2020 <0.136 0.563 Z1 <0.0793 <0.0793 <0.0793 <0.0511 0.757 -- 0.405 Z1 -- 0.535 Z1 1.23 0.100 Z1 IA-11 4/15/2020 <0.136 0.377 <0.0793 <0.0793 <0.0793 <0.0511 0.562 -- 0.237 -- 0.515 1.05 0.0976 IA-12 4/15/2020 <0.679 <0.536 <0.396 <0.396 <0.396 <0.256 0.719 B -- <0.650 -- <0.630 1.82 <0.405 IA-13 4/15/2020 <0.136 <0.107 <0.0793 <0.0793 <0.0793 <0.0511 0.498 -- 0.276 -- 0.471 1.04 <0.0810 AA-1 4/15/2020 <0.136 <0.107 <0.0793 <0.0793 <0.0793 <0.0511 0.668 -- 0.222 -- 0.561 1.13 0.104 AA-2 4/15/2020 <0.136 <0.107 <0.0793 <0.0793 <0.0793 <0.0511 0.457 -- 0.215 -- 0.478 1.10 0.0964 AA-3 4/15/2020 <0.136 <0.107 <0.0793 <0.0793 <0.0793 <0.0511 0.396 B -- 0.179 -- 0.473 1.04 0.0919 Notes:

Detections are indicated in bold. PCE = Tetrachloroethene.

Highlighted value exceeds the DTSC SL / USEPA RSL for commercial/industrial land use. TCE = Trichloroethene.

Volatile organic compounds (VOCs) measured by EPA Method TO-15 in selective ion monitoring (SIM) acquisition mode. DCE = Dichloroethene. µg/m3 = micrograms per cubic meter. DCA = Dichloroethane.

DTSC SL = Department of Toxic Substances Control Screening Level (DTSC, June 2020). B = The same analyte is found in the associated blank.

USEPA RSL = U.S. Environmental Protection Agency Regional Screening Level (USEPA, May 2021). Z1 = The reported value is an estimate.

ARAL = Accelerated Response Action Level.

URAL = Urgent Response Action Level. Within = Within footprint of proposed new commercial building -- = No published value or not reported. Near = Near footprint of proposed new commercial building <0.136 = Not detected above indicated laboratory reporting limit. 1 For constituents where DTSC SLs (HHRA Note 3) are not published, USEPA RSLs are used. 2 The TCE indoor air action levels shown represent commercial/industrial exposure scenario for a 8-hour workday (DTSC, 2014).

References:

DTSC, 2014. HERO HHRA Note Number: 5, Health-based Indoor Air Screening Criteria for Trichloroethylene (TCE). August 23.

DTSC, 2020. Human Health Risk Assessment (HHRA) Note Number 3, DTSC-modified Screening Levels (DTSC SLs). Human and Ecological Risk Office (HERO). June.

USEPA, 2021. Regional Screening Levels (TR=1E-06, HQ=1). May.

IA-4
Sample ID Date Notes
DTSC SL /USEPA RSL - Indoor Air
Commercial/Industrial 1
TCE Commercial/Industrial ARAL / URAL 2
Table 2
Subslab Vapor Sample Analytical Results - VOCs
Former Kaiser Aerotech Facilities
880 Doolittle Drive and 498 Hester Street
San Leandro, California

Page 1 of 1 ends

Probe Sample
Depth
Date
Sampled Notes PCE TCE cis-1,2-DCE trans-1,2-DCE 1,1-DCE Vinyl Chloride Benzene Toluene Ethylbenzene Total Xylenes (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) 67 100 1,200 12,000 10,000 5.3 14 43,000 160 15,000
-- 270 / 800 -- -- -- -- -- -- -- --
4,000 6,000 70,000 700,000 620,000 320 840 2,600,000 9,800 880,000 -- 16,000 / 48,000 -- -- -- -- -- -- -- --
VP-1 Subslab 4/16/2020 2.25 330 3.11 1.63 <0.793 <0.511 <0.639 2.12 <0.867 2.30 VP-2 Subslab 4/16/2020 Within 509 245 27.4 1.89 <0.793 <0.511 0.795 8.55 1.06 4.71 VP-3 Subslab 4/16/2020 4.13 729 40.0 16.8 <0.793 <0.511 1.59 3.12 <0.867 2.88 Subslab 4/16/2020 Within 6.06 2,190 E 8.20 2.48 <0.793 <0.511 <0.639 1.66 1.13 2.53 Subslab 4/16/2020 Duplicate 3.29 198 6.98 2.14 <0.793 <0.511 0.862 0.829 <0.867 <0.867 VP-5 Subslab 4/16/2020 4.00 46.2 <0.793 <0.793 <0.793 <0.511 0.735 2.45 <0.867 3.71 VP-6 Subslab 4/16/2020 Near 18.1 14,200 73.7 68.2 <0.793 <0.511 1.75 1.55 1.32 10.0 VP-7 Subslab 4/16/2020 287 17,500 97.9 86.0 <0.793 <0.511 1.69 1.71 <0.867 3.82 VP-8 Subslab 4/16/2020 3.59 638 <3.96 <3.96 <3.96 <2.56 0.731 3.36 0.897 4.69 VP-9 Subslab 4/16/2020 1.67 408 2.13 <0.793 <0.793 <0.511 <0.639 1.31 <0.867 3.20 VP-10 Subslab 4/16/2020 2.75 287 2.15 <0.793 <0.793 <0.511 <0.639 2.97 3.02 11.9 VP-11 Subslab 4/16/2020 23.8 196 39.5 7.61 <0.793 <0.511 <0.639 1.89 <0.867 4.02 VP-12 Subslab 4/16/2020 7.60 11.4 <0.793 <0.793 <0.793 <0.511 <0.639 2.21 <0.867 3.63 Notes:

Detections are indicated in bold.

Highlighted value exceeds the DTSC SL / USEPA RSL for commercial/industrial land use for default attenuation factor (AFdefault) of 0.03.

Volatile organic compounds (VOCs) measured by EPA Method TO-15. µg/m3 = micrograms per cubic meter. ND<0.793 = Not detected above indicated laboratory reporting limit.

DTSC SL = Department of Toxic Substances Control Screening Level (DTSC, June 2020). -- = No published value. TCE = Trichloroethene.

USEPA RSL = U.S. Environmental Protection Agency Regional Screening Level (USEPA, May 2021). PCE = Tetrachloroethene. DCE = Dichloroethene.

ARAL = Accelerated Response Action Level. Within = Within footprint of proposed new commercial building URAL = Urgent Response Action Level. Near = Near footprint of proposed new commercial building AF = attenuation factor.

E = The analyte concentration exceeds the upper limit of the calibration range of the instrument established by the initial calibration (iCAL). 1 In order of priority, the screening level represents the DTSC-modified screening level (DTSC, 2020) followed by USEPA Regional Screening Level (RSL; USEPA, 2021). 2 The screening level for subslab vapor is calculated by dividing the applicable indoor air screening level by the AFdefault of 0.03 (USEPA, 2015). 3 The screening level for subslab vapor is calculated by dividing the applicable indoor air screening level by the AFfcb of 0.0005 (DTSC, 2011). 4 The TCE action levels represent commercial/industrial exposure scenario for a 8-hour workday (DTSC, 2014).

References:

DTSC. 2011. Final Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air. October.

DTSC, 2014. HERO HHRA Note Number: 5, Health-based Indoor Air Screening Criteria for Trichloroethylene (TCE). August 23.

DTSC, 2020. Human Health Risk Assessment (HHRA) Note Number 3, DTSC-modified Screening Levels (DTSC SLs). Human and Ecological Risk Office (HERO). June.

USEPA, 2021. Regional Screening Levels (TR=1E-06, HQ=1). May.

USEPA. 2015. OSWER Technical Guide for Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Vapor Sources to Indoor Air. Office of Solid Waste and Emergency Response. June.

Refer to laboratory report for full analyte list. Other VOCs were reported by the laboratory however concentrations were either low (below commercial SLs) or constituents do not have screening levels associated with them and are not expected to be regulatory drivers for environmental response (Table 3).

DTSC SL / USEPA RSL - Subslab Vapor
Commercial / Industrial 1,2
USEPA AFdefault = 0.03
TCE Commercial/Industrial ARAL/URAL 2,4
USEPA AFdefault = 0.03
DTSC SL / USEPA RSL - Subslab Vapor
Commercial / Industrial 1,3
DTSC AFfcb - Future Commercial Building = 0.0005
TCE Commercial/Industrial ARAL/URAL 3,4
DTSC AFfcb - Future Commercial Building = 0.0005
VP-4
Table 3
Summary of Maximum Subslab Vapor Concentrations - Other VOCs Former Kaiser Aerotech Facilities
880 Doolittle Drive and 498 Hester Street
San Leandro, California

Page 1 of 1 ends

RMD ENVIRONMENTAL SOLUTIONS, INC.
(µg/m3) (µg/m3)
Acetone 326 4,700,000
2-Butanone (MEK) 50.7 730,000
Carbon disulfide 13.9 100,000
Chloroform 12.8 18
Chloromethane 1.72 13,000
Cyclohexane 46.5 870,000
1,2-Dichlorobenzene 5.60 29,000
1,3-Dichlorobenzene 3.01 --
1,1-Dichloroethane 8.98 260
1,1-Difluoroethane 77.5 6,000,000
1,4-Dioxane 6.81 83
Ethanol 144 --
4-Ethyltoluene 1.32 --
Freon 11 (Trichlorofluoromethane) 1.91 180,000
Freon 12 (Dichlorodifluoromethane) 22.1 15,000
Freon 113 (1,1,2-Trichlorotrifluoroethane) 2.19 730,000 Heptane 11.6 60,000
n-Hexane 370 100,000
Isopropylbenzene 1.34 60,000
Methyl Butyl Ketone 8.06 4,300
Methylene Chloride 10.9 400
4-Methyl-2-Pentanone (MIBK) 7.78 430,000
2-Propanol 50.9 29,000
Propene 4.22 430,000
Tetrahydrofuran 3.98 290,000
1,1,1-Trichloroethane 87.6 150,000
1,2,4-Trimethylbenzene 2.38 8,700
1,3,5-Trimethylbenzene 2.07 8,700
2,2,4-Trimethylpentane 78.9 --
Notes:

Volatile organic compounds (VOCs) measured by EPA Method TO-15. µg/m3 = Micrograms per cubic meter.

DTSC SL = Department of Toxic Substances Control Screening Level (DTSC, June 2020).

USEPA RSL = U.S. Environmental Protection Agency Regional Screening Level (USEPA, May 2021).

AF = attenuation factor.
-- = No published value.

References:

U.S. Environmental Protection Agency (USEPA), 2021. Regional Screening Levels (TR=1E-06, HQ=1). May.

Department of Toxic Substances Control (DTSC), 2020. Human Health Risk Assessment (HHRA) Note Number 3, DTSC-modified Screening Levels (DTSC SLs). Human and Ecological Risk Office (HERO). June.

Analyte
Maximum Detected
Concentration

DTSC SL / USEPA RSL -
Commercial/Industrial1
USEPA AFdefault = 0.03
1 The screening level for subslab vapor is calculated by dividing the applicable indoor air screening level by the AFdefault of 0.03. For constituents where DTSC SLs (HHRA Note 3) are not published, USEPA RSLs are used.

Table 4
Summary of Subslab Vapor Sample Analytical Results - Helium Former Kaiser Aerotech Facilities
San Leandro, California

Page 1 of 1 ends

Depth Helium in Sample
Average Helium
Under Shroud Leak Ratio 1
(feet bgs) (%) (%) (%)
VP-1 4/16/2020 Subslab <0.100 21.0 --
VP-2 4/16/2020 Subslab <0.100 23.6 --
VP-3 4/16/2020 Subslab <0.100 26.4 --
VP-4 4/16/2020 Subslab <0.100 21.0 --
VP-4-DUP 4/16/2020 Subslab <0.100 21.4 --
VP-5 4/16/2020 Subslab <0.100 27.3 --
VP-6 4/16/2020 Subslab <0.100 24.7 --
VP-7 4/16/2020 Subslab <0.100 18.9 --
VP-8 4/16/2020 Subslab <0.100 30.3 --
VP-9 4/16/2020 Subslab 0.968 18.0 5
VP-10 4/16/2020 Subslab 0.682 21.3 3
VP-11 4/16/2020 Subslab <0.100 24.2 --
VP-12 4/16/2020 Subslab <0.100 25.9 --
Notes:

Helium and oxygen analyzed by ASTM Method D-1946.
bgs = below ground surface.
% = percent.
<0.100 = Not detected above indicated reporting limit.
-- = Not calculated, helium not detected in sample.

Bold values were reported above laboratory detection limits. 1 Estimated leak ratio (%) = [Concentration of Helium in Sample (%)] / [Concentration of Helium in Shroud (%)] X100.

Sample ID Sample Date
MW-1 MW-11 MW-12 MW-13 MW-15 MW-16 MW-17 MW-18 MW-20 MW-21 MW-22 MW-23 MW-24 MW-25 MW-26 MW-3 MW-4 MW-5 MW-6 MW-7 MW-8A MW-9 PZ-2 MW-28 MW-29 FA-1 IA-1 IA-13 VP-1 AA-1 AA-2 AA-3 VP-4 IA-4 VP-3 IA-3 VP-2 IA-2 VP-5 IA-5 VP-6 IA-6 VP-9 IA-9 VP-11 IA-11 VP-12 IA-12IA-10 VP-10VP-8 IA-8 VP-7 IA-7 SVP-7 SVP-8 SVP-6 SVP-4SVP-1 SVP-2 SVP-5 SVP-3 Proposed Building SVP-11 SVP-9 SVP-10 LEGENDFormer Kaiser Aerotech Facilities Boundary SOIL VAPOR SAMPLE LOCATIONS WITH RESULTS 100500 Scale (feet) 2 After Apex, 2017 Basemap from Secor, June 25, 2002 N FORMER KAISER AEROTECH FACILITIES 880 DOOLITTLE DRIVE & 498 HESTER STREET SAN LEANDRO, CALIFORNIA 01/27/20 DATE FIGURE IA-1 VP-1 AA-1 A-zone Monitoring Well Subslab Vapor Sample Location Indoor Air Sample Location Ambient Air Sample Location 10/30/20 TCE VC Benzene SVP-7 7.72 45.5 24.9 10/30/20 TCE VC Benzene SVP-4 7.13 560 46.0 TrichloroetheneTCE Notes: 1. All results reported in micrograms per cubic meter (µg/m³). 2. Where duplicate samples are analyzed, highest concentration reported. 3. Concentrations above commercial/industrial screening levels are shaded. 4. In order of priority, screening level represents indoor air DTSC screening level (June 2020) or USEPA Regional Screening Level (November 2020) divided by default attenuation factor of 0.03. 10/30/20 TCE VC Benzene SVP-3 33.9 1.87 217 Screening Level TCE VC Benzene Soil Vapor 100 5.3 14 Commercial/Industrial Screening Levels SVP-1 Soil Vapor Sample Location 10/30/20 TCE VC Benzene SVP-1 12.8 ND<0.511 1.68 10/30/20 TCE VC Benzene SVP-2 2,150 15.5 61.6 10/30/20 TCE VC Benzene SVP-8 23.6 14.9 58.8 10/30/20 TCE VC Benzene SVP-6 ND<1.07 389 120 10/30/20 TCE VC Benzene SVP-5 22.6 176 59.7 Vinyl ChlorideVC 01/18/21 TCE VC Benzene SVP-9 ND<1.07 1,300 28.4 01/18/21 TCE VC Benzene SVP-10 ND<1.07 412 29.9 01/18/21 TCE VC Benzene SVP-11 1,360 0.918 12.6 Table 4
Soil Vapor Sample Analytical Results - VOCs
Former Kaiser Aerotech Facilities
880 Doolittle Drive and 498 Hester Street
San Leandro, California

Page 1 of 2 ends

Probe Sample Depth Date
Sampled PCE TCE cis-1,2-DCE trans-1,2-DCE 1,1-DCE Vinyl Chloride Benzene Toluene Ethylbenzene Total Xylenes Acetone Carbon
Disulfide
Carbon
Tetrachloride Chlorobenzene Chloromethane Cyclohexane 1,3-DCB 1,4-DCB (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) 67 100 1,200 12,000 10,000 5.3 14 43,000 160 15,000 4,700,000 100,000 67 7,300 13,000 870,000 -- 37 -- 270 / 800 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 4,000 6,000 70,000 700,000 620,000 320 840 2,600,000 9,800 880,000 280,000,000 6,200,000 4,000 440,000 780,000 52,000,000 -- 2,200 -- 16,000 / 48,000 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- SVP-1 5 10/30/2020 4.22 12.8 1.12 2.14 ND<0.793 ND<0.511 1.68 51.6 4.14 28.6 19.6 4.45 ND<1.26 ND<0.924 0.706 ND<0.689 12.1 ND<1.2 SVP-2 4.75 10/30/2020 1.99 2,150 571 16.7 55.9 15.5 61.6 467 41.3 151 146 33.0 ND<1.26 ND<0.924 0.607 14.2 9.68 ND<1.2 SVP-3 4.75 10/30/2020 10.9 33.9 8.68 ND<0.793 ND<0.793 1.87 217 1,500 183 709 233 47.0 1.58 ND<0.924 2.73 42.4 25.4 ND<1.2 SVP-4 5 10/30/2020 ND<1.36 7.13 1,570 215 3.69 560 46.0 135 6.85 31.9 101 71.6 ND<1.26 ND<0.924 ND<0.413 79.6 7.03 ND<1.2 SVP-5 5 10/30/2020 ND<1.36 22.6 55.1 51.9 2.29 176 59.7 131 22.7 98.4 70.8 15.5 ND<1.26 ND<0.924 ND<0.413 93.7 7.27 ND<1.2 SVP-6 5 10/30/2020 ND<1.36 ND<1.07 97.9 206 1.82 389 120 315 78.0 327 105 183 ND<1.26 ND<0.924 1.21 152 10.6 ND<1.2 SVP-7 5 10/30/2020 ND<1.36 7.72 18.8 2.97 ND<0.793 45.5 24.9 61.0 4.38 21.7 38.0 61.9 ND<1.26 ND<0.924 1.31 49.6 15.0 ND<1.2 SVP-8 5 10/30/2020 2.59 23.6 82.8 7.37 1.08 14.9 58.8 220 14.5 54.9 147 178 ND<1.26 ND<0.924 1.60 86.1 13.5 ND<1.2 SVP-8-Dup 5 10/30/2020 ND<1.36 23.4 80.8 7.17 0.943 13.6 56.5 223 14.5 54.8 187 171 ND<1.26 ND<0.924 1.53 84.0 12.3 ND<1.2 SVP-9 4.25 1/18/2021 ND<1.36 ND<1.07 103 2.59 5.03 1,300 28.4 89.3 7.24 31.2 225 134 ND<1.26 4.49 ND<0.413 17.6 17.0 3.30 SVP-10 4.25 1/18/2021 ND<1.36 ND<1.07 10.1 3.72 ND<0.793 412 29.9 72.7 7.33 32.9 120 36.4 ND<1.26 25.3 ND<0.413 88.2 28.4 10.4 SVP-11 4.25 1/18/2021 2.31 1,360 638 184 0.816 0.918 10.0 291 9.80 40.3 231 34.2 ND<1.26 ND<0.924 0.971 28.0 7.21 ND<1.2 SVP-11-Dup 4.25 1/18/2021 ND<1.36 437 199 285 1.35 ND<0.511 12.6 80.6 6.68 31.2 56.6 20.8 ND<1.26 ND<0.924 0.425 7.09 10.2 ND<1.2 USEPA, 20
DTSC SL / USEPA RSL - Soil Vapor
Commercial / Industrial 1,3
DTSC AFfcb - Future Commercial Building = 0.0005
DTSC SL / USEPA RSL - Soil Vapor
Commercial / Industrial 1,2
USEPA AFdefault = 0.03
TCE Commercial/Industrial ARAL/URAL 2,4
USEPA AFdefault = 0.03
TCE Commercial/Industrial ARAL/URAL 3,4
DTSC AFfcb - Future Commercial Building = 0.0005
Table 4
Soil Vapor Sample Analytical Results - VOCs
Former Kaiser Aerotech Facilities
880 Doolittle Drive and 498 Hester Street
San Leandro, California

Page 2 of 2 ends

Probe Sample Depth Date
Sampled
SVP-1 5 10/30/2020
SVP-2 4.75 10/30/2020
SVP-3 4.75 10/30/2020
SVP-4 5 10/30/2020
SVP-5 5 10/30/2020
SVP-6 5 10/30/2020
SVP-7 5 10/30/2020
SVP-8 5 10/30/2020
SVP-8-Dup 5 10/30/2020
SVP-9 4.25 1/18/2021
SVP-10 4.25 1/18/2021
SVP-11 4.25 1/18/2021
SVP-11-Dup 4.25 1/18/2021
U
DTSC SL / USEPA RSL - Soil Vapor
Commercial / Industrial 1,3
DTSC AFfcb - Future Commercial Building = 0.0005
DTSC SL / USEPA RSL - Soil Vapor
Commercial / Industrial 1,2
USEPA AFdefault = 0.03
TCE Commercial/Industrial ARAL/URAL 2,4
USEPA AFdefault = 0.03
TCE Commercial/Industrial ARAL/URAL 3,4
DTSC AFfcb - Future Commercial Building = 0.0005
1,1-DCA 1,4-Dioxane Ethanol 4-Ethyltoluene Freon-11 Freon-12 Heptane N-Hexane MEK Methylene Chloride MIBK Naphthalene 2-Propanol Propene Styrene 1,2,4-TMB 1,3,5-TMB 2,2,4-TMP (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) (µg/m3) 260 83 -- -- 180,000 15,000 60,000 100,000 730,000 400 430,000 12 29,000 430,000 130,000 8,700 8,700 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
15,000 5,000 -- -- 11,000,000 880,000 3,600,000 6,200,000 44,000,000 24,000 26,000,000 720 1,800,000 26,000,000 7,800,000 520,000 520,000 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
ND<0.802 2.61 68.8 ND<0.982 1.48 1.83 7.28 3.26 6.07 1.31 ND<5.12 ND<3.3 6.88 23.2 ND<0.851 5.40 1.79 1.67

47.3 ND<0.721 60.3 18.6 1.15 2.05 187 46.5 11.3 2.09 ND<5.12 ND<3.3 12.1 48.9 ND<0.851 13.1 8.10 167 ND<0.802 ND<0.721 120 111 5.47 2.07 838 133 20.9 4.31 ND<5.12 ND<3.3 ND<3.07 78.3 ND<0.851 79.5 48.5 472 137 3.02 158 5.01 ND<1.12 1.99 53.2 38.1 14.5 ND<0.694 6.14 ND<3.3 ND<3.07 ND<0.689 ND<0.851 4.01 2.18 79.9

57.3 4.04 73.7 15.7 ND<1.12 2.85 32.2 47.9 30.4 ND<0.694 10.8 ND<3.3 ND<3.07 ND<0.689 ND<0.851 12.3 5.60 41.2 111 ND<0.721 79.2 58.4 ND<1.12 2.27 ND<0.818 87.1 16.7 ND<0.694 9.91 ND<3.3 ND<3.07 ND<0.689 ND<0.851 41.9 20.4 3,410

3.29 ND<0.721 70.0 4.11 1.19 4.66 67.1 78.6 13.1 ND<0.694 5.20 ND<3.3 ND<3.07 ND<0.689 ND<0.851 4.24 1.53 ND<0.934

19.4 ND<0.721 70.3 7.31 3.19 2.76 122 197 74.9 ND<0.694 9.50 ND<3.3 ND<3.07 1,220 ND<0.851 5.79 2.55 17.3

18.9 2.10 95.4 7.07 3.01 2.62 120 196 69.9 6.29 9.38 ND<3.3 ND<3.07 1,370 ND<0.851 5.50 2.45 16.3

6.09 ND<0.721 135 4.96 ND<1.12 2.06 81.0 48.3 ND<3.69 2.18 ND<5.12 ND<3.3 44.7 ND<0.689 1.08 8.64 1.68 44.6

2.84 ND<0.721 171 4.22 ND<1.12 0.989 48.7 125 20.2 ND<0.694 ND<5.12 3.36 25.6 ND<0.689 ND<0.851 6.72 1.61 46.4

3.89 ND<0.721 149 4.85 1.19 4.80 72.4 24.0 ND<3.69 5.87 7.57 ND<3.3 111 ND<0.689 4.47 10.4 1.82 7.05

0.974 ND<0.721 163 3.76 ND<1.12 7.22 42.1 13.2 ND<3.69 1.63 ND<5.12 ND<3.3 26.8 9.5 ND<0.851 12.6 2.19 7.47 Notes:

Detections are indicated in bold.

Highlighted value exceeds the DTSC SL / USEPA RSL for commercial/industrial land use for default attenuation factor (AFdefault) of 0.03.

Volatile organic compounds (VOCs) measured by EPA Method TO-15. µg/m3 = micrograms per cubic meter.

DTSC SL = Department of Toxic Substances Control Screening Level (DTSC, June 2020). ARAL = Accelerated Response Action Level.

USEPA RSL = U.S. Environmental Protection Agency Regional Screening Level (USEPA, May 2021). URAL = Urgent Response Action Level.

ND<1.36 = Not detected above indicated laboratory reporting limit. AF = attenuation factor.

PCE = Tetrachloroethene. DCA = Dichloroethane. MIBK = Methyl isobutyl ketone (4-Methyl-2-pentanone).

TCE = Trichloroethene. Freon-11 = Trichlorofluoromethane. TMB = Trimethylbenzene.

DCE = Dichloroethene. Freon-12 = Dichlorodifluoromethane. TMP = Trimethylpentane.

DCB = Dichlorobenzene. MEK = Methyl ethyl ketone (2-Butanone). 1 In order of priority, the screening level represents the DTSC-modified screening level (DTSC, 2020) followed by USEPA Regional Screening Level (RSL; USEPA, 2021). 2 The screening level for soil vapor is calculated by dividing the applicable indoor air screening level by the AFdefault of 0.03 (USEPA, 2015). 3 The screening level for soil vapor is calculated by dividing the applicable indoor air screening level by the AFfcb of 0.0005 (DTSC, 2011). 4 The TCE action levels represent commercial/industrial exposure scenario for a 8-hour workday (DTSC, 2014).

References:

DTSC. 2011. Final Guidance for the Evaluation and Mitigation of Subsurface Vapor Intrusion to Indoor Air. October.

DTSC, 2014. HERO HHRA Note Number: 5, Health-based Indoor Air Screening Criteria for Trichloroethylene (TCE). August 23.

DTSC, 2020. Human Health Risk Assessment (HHRA) Note Number 3, DTSC-modified Screening Levels (DTSC SLs). Human and Ecological Risk Office (HERO). June.

USEPA. 2015. OSWER Technical Guide for Assessing and Mitigating the Vapor Intrusion Pathway from Subsurface Vapor Sources to Indoor Air. Office of Solid Waste and Emergency Response. June.

USEPA, 2021. Regional Screening Levels (TR=1E-06, HQ=1). May.

Table 4
Soil Vapor Sample Analytical Results - Helium
Former Kaiser Aerotech Facilities
880 Doolittle Drive and 498 Hester Street
San Leandro, California

Page 1 of 1 ends

Depth Helium in Sample
Average Helium
Under Shroud Leak Ratio1
(feet bgs) (%) (%) (%)
SVP-1 10/30/2020 5 ND<0.100 22.4 --
SVP-2 10/30/2020 4.75 ND<0.100 20.8 --
SVP-3 10/30/2020 4.75 ND<0.100 23.0 --
SVP-4 10/30/2020 5 ND<0.100 25.0 --
SVP-5 10/30/2020 5 ND<0.100 23.7 --
SVP-6 10/30/2020 5 ND<0.100 23.8 --
SVP-7 10/30/2020 5 ND<0.100 21.4 --
SVP-8 10/30/2020 5 ND<0.100 21.9 --
SVP-8-DUP 10/30/2020 5 ND<0.100 21.9 --
SVP-9 1/18/2021 4.25 ND<0.100 24.3 --
SVP-10 1/18/2021 4.25 ND<0.100 22.0 --
SVP-11 1/18/2021 4.25 ND<0.100 23.8 --
SVP-11-DUP 1/18/2021 4.25 ND<0.100 23.8 --
Notes:

Helium and oxygen analyzed by ASTM Method D-1946.
bgs = below ground surface.
% = percent.

ND<0.100 = Not detected above indicated reporting limit. -- = Not calculated, helium not detected in sample.

Bold values were reported above laboratory detection limits. 1 Estimated leak ratio (%) = [Concentration of Helium in Sample (%)] / [Concentration of Helium in Shroud (%)] X100.

Sample ID Sample Date
RMD ENVIRONMENTAL SOLUTIONS, INC.

APPENDIX D

BAY AREA AIR QUALITY MANAGEMENT DISTRICT (BAAQMD)

NOTIFICATION FORM
See Page Two to Complete This Form Approved 7/8/03

COMPLIANCE & ENFORCEMENT DIVISION
Notification Form
Regulation 8
Rule 40

REMOVAL OF UNDERGROUND STORAGE TANKS OR TREATMENT OF CONTAMINATED SOIL

SITE OF ACTIVITY
Site Address: City & Zip: Site#:

Specific Location of Project within Address:

Owner/Operator:

Check any that apply (400 numbers refer to regulation section requiring reporting):
Tank Removal or Replacement (401) Contaminated Soil Excavation and Removal (402) Aeration of Soil < 50 ppmw organic content, but does not meet Section 118 Exemption (403) Section 114 Exempt; Date Pipeline Leak Started: Vol. Of Soil: (403) Section 115 Exempt; Date Contamination Unrelated to UST Activities Discovered: (405) If only Tank Removal is selected, attach results showing soil is not contaminated

CONTRACTOR INFORMATION
Name: Site Contact: Phone:

Address:

TANK REMOVAL (Section 401)
Scheduled Start Date: Number and Size of Tank(s):

Explain Methods of:

Piping drainage or flushing (310.1)
Liquid and sludge removal (310.2)
Vapor removal (310.3) [Check One] Water Displacement Vapor Freeing* Ventilation* * Emission controls required for vapor freeing or ventilation if tank size greater than 250 gallons.

COMPLETE INFORMATION BELOW OR ATTACH SAMPLE RESULTS SHOWING SOIL IS UNCONTAMINATED (310.4) CONTAMINATED SOIL EXCAVATION AND REMOVAL (Section 402)
Scheduled Start Date: Scheduled Completion Date:

Purpose of Excavation:

Quantity of Soil: Organic Content & Type:

Methods used to quantify and analyze soil:

Method of Stockpile Control (304-306)
Water Spray Covered Vapor Suppressant (List Material Used):

Method of Site Closure (306)
Backfilled Contaminated Soil Removed
Onsite Treatment (Describe): A/C or P/O #:

Loaded Trucks Covered? (306.2) Yes No
AERATION OF SOIL < 50 PPMW ORGANIC CONTENT (Section 403) You must submit a Permit Application and Risk Screening Analysis (Forms will be sent to you)

FOR BAAQMD USE ONLY
Fax/PM Date: By: Disp to I#: Area: Date: By:

Inv Req Date: By: Fwd to Supv. Date: By:

Bay Area
AirQuality
Management
District
—
OTHER PUBLIC AGENCY CONTACTED (Fire District, Hazardous Materials, City or County)? Agency Name: Contact Name:

Address: Phone:

EMERGENCY REMOVAL ORDER APPLICABLE?
Agency Name: Contact Name:

Address: Phone:

H:\Pub_data\Janet\Reg 8-40\forms\notifdraft3.doc

GENERAL INFORMATION
• This notification form shall be used to notify the BAAQMD of any projects subject to the reporting requirements in Regulation 8, Rule 40, Sections 401 through 405. Notifications may be emailed to [email protected]; or mailed to the address listed at the bottom of this form. • An invoice for payment will be sent to the person listed under "Contractor Information" as the person responsible, unless the project is exempt from fee payment (see next item). • See "Frequently Asked Questions" (FAQ) for definition of projects, change procedures, permit requirements, emergency conditions, project exemptions, and fee exemptions. For any questions not answered in the FAQ, contact the Compliance Assistance Counselor at (415) 749-4999.

INSTRUCTIONS
• SITE OF ACTIVITY: Give the site street address and indicate if it has any existing BAAQMD site number, for either a plant or GDF. Identify the specific project location if the site contains more than one building.

Indicate all applicable activity types by checking appropriate boxes. For reporting requirements under Sections 401 through 403, additional information is required, as below. • CONTRACTOR INFORMATION: Identify the contractor that is responsible for performing the work at the site location listed. This contractor is also responsible for payment of the applicable notification fee, if the project is not exempt.
• SECTION 401 - TANK REMOVAL/REPLACEMENT: All soils disturbed and/or excavated as part of the tank removal shall be subject to the requirements of Sections 304 through 306, unless the soil has been determined not to be contaminated by measurement of organic content using the procedures in Sections 601 and 602. Complete requirements for Section 402 or submit sample results showing that the soil is not contaminated.
• SECTION 402 - CONTAMINATED SOIL EXCAVATION AND REMOVAL:
• Be as accurate as possible for the Scheduled Start and Completion Dates. Specific requirements apply for excavation projects triggered within either 45 or 90 days (Reg. 8-40-306.4) and Authority to Construct requirements for projects lasting longer than three months (Reg. 2-1-128.16). • If a vapor suppressant is used, attach a product data sheet or MSDS. • If Method of Site Closure used is Onsite Treatment, describe specific method, (e.g., bioremediation, vapor extraction, air sparging, thermal desorption, etc.).
• If Onsite Treatment is used, indicate whether an Authority to Construct was obtained by providing the Application No. or attach copy of BAAQMD Certification of Exemption. • SECTION 403 – AERATION OF SOIL < 50 PPMW ORGANIC CONTENT: Section 301 exempts from control the aeration of soil containing less than 50 ppmw of organic compounds, but Section 403 still requires reporting of ANY soil aeration. If such a project does not meet the exemption criteria of Section 118, then a Permit Application and Risk Screening Analysis must be submitted. • EMERGENCY REMOVAL INFORMATION (IF APPLICABLE): The rule defines an emergency tank removal or excavation of contaminated soil as "carried out pursuant to an order of a state or local government agency issued because the contaminated soil poses an imminent threat to public health and safety." If the project(s) meet this definition, then identify the agency that issued the order. Under Section 402 requirements, on line two, identify the purpose as indicated in the order. 375 Beale Street, Suite 600, San Francisco, CA 94105
www.baaqmd.gov

APPENDIX E

DEPARTMENT OF TOXIC SUBSTANCES CONTROL (DTSC)

INFORMATION ADVISORY CLEAN IMPORTED FILL MATERIAL
Executive Summary
This fact sheet has been prepared to ensure that inappropriate fill material is not introduced onto sensitive land use properties under the oversight of the DTSC or applicable regulatory authorities. Sensitive land use properties include those that contain facilities such as hospitals, homes, day care centers, and schools. This document only focuses on human health concerns and ecological issues are not addressed.

It identifies those types of land use activities that may be appropriate when determining whether a site may be used as a fill material source area. It also provides guidelines for the appropriate types of analyses that should be performed relative to the former land use, and for the number of samples that should be collected and analyzed based on the estimated volume of fill material that will need to be used.

The information provided in this fact sheet is not regulatory in nature, rather is to be used as a guide, and in most situations the final decision as to the acceptability of fill material for a sensitive land use property is made on a case-by-case basis by the appropriate regulatory agency.

Introduction
The use of imported fill material has recently come under scrutiny because of the instances where contaminated soil has been brought onto an otherwise clean site. However, there are currently no established standards in the statutes or regulations that address environmental requirements for imported fill material.

Therefore, the California Environmental Protection Agency, Department of Toxic Substances Control (DTSC) has prepared this fact sheet to identify procedures that can be used to minimize the possibility of introducing contaminated soil onto a site that requires imported fill material. Such sites include those that are undergoing site remediation, corrective action, and closure activities overseen by DTSC or the appropriate regulatory agency. These procedures may also apply to construction projects that will result in sensitive land uses. The intent of this fact sheet is to protect people who live on or otherwise use a sensitive land use property. By using this fact sheet as a guide, the reader will minimize the chance of introducing fill material that may result in potential risk to human health or the environment at some future time.

California
Environmental
Protection Agency
It is DTSC’s
mission to restore,
protect and
enhance the
environment, to
ensure public
health,
environmental
quality and
economic vitality,
by regulating
hazardous waste,
conducting and
overseeing
cleanups, and
developing and
promoting
pollution
prevention.

State of California

DEPARTMENT OF TOXIC SUBSTANCES CONTROL
Information Advisory
Clean Imported Fill Material
The energy challenge facing California is real. Every Californian needs to take immediate action to reduce energy consumption. For a list of simple ways you can reduce demand and cut your energy costs, see our website at www.dtsc.ca.gov.

D PE MTRA
NE
T
OF

TOXIC SUBSTANCES

CONTROL
October 2001
2 Overview
Both natural and manmade fill materials are used
for a variety of purposes. Fill material properties are commonly controlled to meet the necessary site specific engineering specifications. Because most sites requiring fill material are located in or near urban
areas, the fill materials are often obtained from construction projects that generate an excess of soil, and from demolition debris (asphalt, broken concrete,
etc.). However, materials from those types of sites
may or may not be appropriate, depending on the
proposed use of the fill, and the quality of the assessment and/or mitigation measures, if necessary.

Therefore, unless material from construction
projects can be demonstrated to be free of contamiPotential Contaminants Based on the Fill Source Area Fill Source:

Land near to an existing freeway
Land near a mining area or rock quarry
Agricultural land
Residential/acceptable commercial land
Target Compounds
Lead (EPA methods 6010B or 7471A), PAHs
(EPA method 8310)
Heavy Metals (EPA methods 6010B and
7471A), asbestos (polarized light
microscopy), pH
Pesticides (Organochlorine Pesticides: EPA
method 8081A or 8080A; Organophosphorus Pesticides: EPA method 8141A; Chlorinated Herbicides: EPA method 8151A), heavy metals (EPA methods 6010B and
7471A)
VOCs (EPA method 8021 or 8260B, as
appropriate and combined with collection
by EPA Method 5035), semi-VOCs (EPA
method 8270C), TPH (modified EPA method
8015), PCBs (EPA method 8082 or 8080A),
heavy metals including lead (EPA methods
6010B and 7471A), asbestos (OSHA Method
ID-191)
nation and/or appropriate for the proposed use, the
use of that material as fill should be avoided.

Selecting Fill Material
In general, the fill source area should be located in
nonindustrial areas, and not from sites undergoing
an environmental cleanup. Nonindustrial sites include those that were previously undeveloped, or used solely for residential or agricultural purposes.

If the source is from an agricultural area, care should be taken to insure that the fill does not include
former agricultural waste process byproducts such
as manure or other decomposed organic material.

Undesirable sources of fill material include industrial and/or commercial sites where hazardous ma- *The recommended analyses should be performed in accordance with USEPA SW-846 methods (1996).

Other possible analyses include Hexavalent Chromium: EPA method 7199 3 Area of Individual Borrow Area
2 acres or less
2 to 4 acres
4 to 10 acres
Greater than 10 acres
Volume of Borrow Area Stockpile
Up to 1,000 cubic yards
1,000 to 5,000 cubic yards
Greater than 5,000 cubic yards
Sampling Requirements
Minimum of 4 samples
Minimum of 1 sample every 1/2 acre
Minimum of 8 samples
Minimum of 8 locations with 4 subsamples
per location
Samples per Volume
1 sample per 250 cubic yards
4 samples for first 1000 cubic yards +1
sample per each additional 500 cubic yards
12 samples for first 5,000 cubic yards + 1
sample per each additional 1,000 cubic
yards
Recommended Fill Material Sampling Schedule
terials were used, handled or stored as part of the
business operations, or unpaved parking areas where
petroleum hydrocarbons could have been spilled or
leaked into the soil. Undesirable commercial sites
include former gasoline service stations, retail strip
malls that contained dry cleaners or photographic
processing facilities, paint stores, auto repair and/or painting facilities. Undesirable industrial facilities
include metal processing shops, manufacturing facilities, aerospace facilities, oil refineries, waste treatment plants, etc. Alternatives to using fill from construction sites include the use of fill material obtained from a commercial supplier of fill material or from soil pits in rural or suburban areas. However, care should be taken to ensure that those materials are also uncontaminated.

Documentation and Analysis
In order to minimize the potential of introducing
contaminated fill material onto a site, it is necessary to verify through documentation that the fill source
is appropriate and/or to have the fill material analyzed for potential contaminants based on the location and history of the source area. Fill documentation should include detailed information on the previous use of the land from where the fill is taken, whether an environmental site assessment was performed and its findings, and the results of any testing performed. It is recommended that any such documentation should be signed by an appropriately licensed (CA-registered) individual. If such documentation is not available or is inadequate,
samples of the fill material should be chemically analyzed. Analysis of the fill material should be based on the source of the fill and knowledge of the prior
land use.

Detectable amounts of compounds of concern
within the fill material should be evaluated for risk
in accordance with the DTSC Preliminary Endangerment Assessment (PEA) Guidance Manual. If 4 metal analyses are performed, only those metals
(CAM 17 / Title 22) to which risk levels have been
assigned need to be evaluated. At present, the
DTSC is working to establish California Screening Levels (CSL) to determine whether some compounds of concern pose a risk. Until such time as these CSL values are established, DTSC recommends that the DTSC PEA Guidance Manual or an equivalent process be referenced. This guidance may include the Regional Water Quality Control Board’s (RWQCB) guidelines for reuse
of non-hazardous petroleum hydrocarbon contaminated soil as applied to Total Petroleum Hydrocarbons (TPH) only. The RWQCB guidelines should not be used for volatile organic compounds
(VOCs) or semi-volatile organic compounds
(SVOCS). In addition, a standard laboratory data
package, including a summary of the QA/QC
(Quality Assurance/Quality Control) sample results should also accompany all analytical reports.

When possible, representative samples should be collected at the borrow area while the potential fill material is still in place, and analyzed prior to removal from the borrow area. In addition to performing
the appropriate analyses of the fill material, an appropriate number of samples should also be determined based on the approximate volume or area of soil to be used as fill material. The table above can
be used as a guide to determine the number of
samples needed to adequately characterize the fill
material when sampled at the borrow site.

Alternative Sampling
A Phase I or PEA may be conducted prior to sampling to determine whether the borrow area may have been impacted by previous activities on the
property. After the property has been evaluated, any
sampling that may be required can be determined
during a meeting with DTSC or appropriate regulatory agency. However, if it is not possible to analyze the fill material at the borrow area or determine that it is appropriate for use via a Phase I or PEA, it is recommended that one (1) sample per
truckload be collected and analyzed for all compounds of concern to ensure that the imported soil is uncontaminated and acceptable. (See chart on
Potential Contaminants Based on the Fill Source
Area for appropriate analyses). This sampling frequency may be modified upon consultation with the DTSC or appropriate regulatory agency if all of
the fill material is derived from a common borrow
area. However, fill material that is not characterized
at the borrow area will need to be stockpiled either
on or off-site until the analyses have been completed.

In addition, should contaminants exceeding acceptance criteria be identified in the stockpiled fill material, that material will be deemed unacceptable
and new fill material will need to be obtained,
sampled and analyzed. Therefore, the DTSC recommends that all sampling and analyses should be completed prior to delivery to the site to ensure the
soil is free of contamination, and to eliminate unnecessary transportation charges for unacceptable fill material.

Composite sampling for fill material characterization may or may not be appropriate, depending on quality and homogeneity of source/borrow area, and
compounds of concern. Compositing samples for
volatile and semivolatile constituents is not acceptable. Composite sampling for heavy metals, pesticides, herbicides or PAH’s from unanalyzed stockpiled soil is also unacceptable, unless it is stockpiled at the borrow area and originates from the same
source area. In addition, if samples are composited,
they should be from the same soil layer, and not
from different soil layers.

When very large volumes of fill material are anticipated, or when larger areas are being considered as borrow areas, the DTSC recommends that a Phase
I or PEA be conducted on the area to ensure that
the borrow area has not been impacted by previous
activities on the property. After the property has
been evaluated, any sampling that may be required
can be determined during a meeting with the
DTSC.

For further information, call Shahir Haddad, P.E. at
(714) 484-5368.

Department of Toxic Substances Control
Jared Blumenfeld
Secretary for
Environmental Protection
Meredith Williams, Ph.D., Director
700 Heinz Avenue
Berkeley, California 94710-2721
Gavin Newsom
Governor
Printed on Recycled Paper
August 3, 2021
Leandro Brookshire, LLC
Mr. Brett Richer
Pier 1, Bay 1
San Francisco, CA 94111
[email protected]

REVISED SOIL AND GROUNDWATER MANAGEMENT PLAN (SGMP) APPROVAL LETTER FOR THE FORMER KAISER AEROTECH FACILITIES (200559-11018) Dear Mr. Richer:

The Department of Toxic Substances Control (DTSC) has reviewed the Revised Soil and Groundwater Management Plan (SGMP) for the Former Kaiser Aerotech Facilities site (Site) located at 880 Doolittle Drive and 498 Hester Street, San Leandro, California, submitted by RMD Environmental Solutions, Inc. (RMD) and dated June 11, 2021. The purpose of this SGMP is to provide guidance for proper handling, management, and disposal of impacted soil and groundwater that may be encountered during the activities described in the plan. This SGMP has been revised to incorporate responses to May 7, 2021 DTSC comments.

DTSC hereby approves the SGMP. Please submit one final paper copy for the Site file with attention to project manager Yongsheng “Johnny” Sun.

If you have any questions or need further assistance, please contact project manager Yongsheng “Johnny” Sun at [email protected], or (510) 540-3872.

Sincerely,

John Karachewski, PhD, PG, CHG Unit Chief
Site Mitigation and Restoration Program – Berkeley Office Enclosure
cc: See next page
Mr. Richer
August 3, 2021

Page 2 ends

cc: Mr. Khaled Rahman, P.G., C.HG.

RMD Environmental Solutions, Inc.
[email protected]

Yongsheng Sun
DTSC Project Manager
[email protected]
John Karachewski, PhD, PG, CHG
Alameda County Unit Chief, DTSC
Site Mitigation and Restoration Program – Berkeley Office [email protected]
Jennifer Boruck
Administrative Project Manager, DTSC
[email protected]

Appendix E
Evaluation of Site Sound Emissions

EVALUATION OF SITE SOUND EMISSIONS

PROPOSED DISTRIBUTION FACILITY
San Leandro, CA
Revision 2
Prepared for: Prologis, Inc.

Prepared by: John T. Baldassano, Jr.
[email protected]
Reviewed by: Benjamin C. Mueller, P.E.
[email protected]
Date: 5 February 2024
OAA File: 4301B

1460 US Highway 9 North £
Woodbridge, NJ 07095 «
Voice 973-731-7002 w
Fax 973-731-6680 £
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Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

TABLE OF CONTENTS
INTRODUCTION......................................................................................... 1 SITE AND VICINITY ..................................................................................... 2 REGULATIONS/GOALS................................................................................ 4 EXPECTED SOUND EMISSIONS.................................................................. 7 Rooftop HVAC Sound......................................................................... 7 Truck Activity ..................................................................................... 9 ADDITIONAL IMPACT EVALUATIONS...................................................... 14 CONCLUSION........................................................................................... 17 Ostergaard
Acoustical
Associates
1460 US Highway 9 North £
Woodbridge, NJ 07095
Voice 973-731-7002 w
Fax 973-73 1 -6680 g
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Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

Page 1 ends

INTRODUCTION
Ostergaard Acoustical Associates (OAA) was asked to assist with the evaluation of potential sound emissions from a proposed speculative distribution facility planned for construction in San Leandro, Alameda County, California. The project site is located southeast of the Hester Street culde-sac and currently comprises an industrial warehouse. Plans call for all existing structures on site to be removed and the construction of a distribution facility in the southeastern portion of the site.

This report addresses on-site noise radiated to nearby potentially noise-sensitive receptors.

The purpose of this sound study is to analyze future site sound emissions for comparison with applicable code limits and to evaluate the potential for noise complaints. Research indicates that the City of San Leandro does have a noise code, but it generally discusses noise in a qualitative manner and provides no applicable quantitative limits. The County noise code has merit and while not enforceable within City limits, was used as a foundation for development of project noise goals. Therefore, expected site sound emissions from the facility were evaluated against criteria recommended by OAA based the County noise code limits, professional experience, and information available on existing ambient conditions. The objective of the project goal is to protect potentially noise sensitive receptors and meet the intent of the City noise code. Sound produced by the site comprises steady sound from rooftop HVAC equipment as well as intermittent sound from truck and car1 movements.

Work by OAA was overseen by Benjamin C. Mueller, P.E., with assistance from OAA Staff. The representative at Prologis Inc. coordinating this project is Ms. Claudia Tarpin. 1 Note that throughout this report, the term “car” collectively refers to personal passenger vehicles including automobiles, vans, pick-ups, or SUVs. The term “truck” refers to heavy trucks such as over-the-road or line-haul trucks.

Ostergaard
acoustical

ASSOCIATES
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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SITE AND VICINITY
Figure 1 is an aerial image obtained from Google Earth outlining the site property line in red. The site and most of the surrounding area currently comprise industrial properties in the IG, Industrial General, district. Many uses in the vicinity also utilize heavy trucks. Certain properties in the area are in the IP, Industrial Park, district and accommodate non-noise-sensitive industrial uses. West of the site, across Doolittle Drive, is a golf course located in Oakland. About ¾ of a mile beyond is the Oakland International Airport; the site is in line with two of the runways. Abutting the site to the east are other industrial uses. A railroad right-of-way is 500 feet to the east with residences fronting on Tudor Court in the RS, Residential Single-Family, district beyond. Adjacent to these residences to the south are other IP and IG district uses; just east of this residential neighborhood is Interstate-880. Given the surroundings, the area is expected to be regularly exposed to moderately high sound levels, and therefore, nearby residences are not assumed to be particularly noise-sensitive. Nevertheless, site noise should still be evaluated at these receptors to assess any acoustical impact.

Plans call for the existing industrial use and all structures to be removed and a new 239,573 ft2 distribution facility constructed roughly in the same location as the previous building. Office space will accommodate about 10,000 ft2 of the building footprint. The remaining 229,573 ft2 will be used for warehouse storage. The proposed building will be 50 feet tall. Existing site access will remain via Hester Street to the northwest and an unnamed street connecting to Doolittle Drive to the southwest. These driveways will accommodate both cars and trucks. Onsite driveways circle the building, allowing truck access to the truck court located along the north and south sides of the building. There are approximately 27 dock doors along the north side of the building and 37 dock doors along the south side. Associate parking is provided in a triangular lot on the west side of the building; trailer parking is provided north of the building.

Specific traffic counts depend on the end user tenant. While the extent of onsite traffic and the hours of operation are unknown, the sound study has followed the same conservative assumptions made in the traffic study, based on the size of the site and proposed building. Typical warehouses operate 24/7 with much of the activity during the daytime hours; nighttime operations are generally used to prepare for the next day. The focus of this study is to analyze potential nighttime activity as this is generally when residential receptors are most sensitive and code limits are more stringent.

Ostergaard
acoustical

ASSOCIATES
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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Figure 1 — Google Earth image showing the proposed distribution facility site and vicinity in San Leandro, CA. The site property line is approximately outlined in red.

Ostergaard
acoustical

ASSOCIATES
Evaluation of Site Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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REGULATIONS/GOALS
When developing a site of this type, it is appropriate to consider how sound from the project will likely be received, especially by noise-sensitive receptors. Sound produced by distribution facilities is characterized by motor vehicle activity, such as idling and vehicle movement, as well as steady HVAC equipment. These sound sources were evaluated and compared to applicable noise code limits. As a general practice, when motor vehicles are on site, they are considered part of a site’s sound emissions; when vehicles are on public roads, they are not. When vehicles are departing or approaching the facility, they are expected to blend in with existing traffic flow sound in the area.

City, County, and State codes were reviewed for applicable noise regulations. The City of San Leandro discusses noise in Chapter 4.1: Noise. The code prohibits disturbing, excessive, and offensive noise and specifically prohibits certain acts in connection with loud noise, but none are relevant to the site. All discussions of noise are in a qualitative manner and do not include quantitative limits. Zoning code Section 4-1670: Performance Standards also call for compliance with Chapter 4-1. Sections 2-740 and 2-741 provide additional performance standards that apply to industrial activities within 200 feet of a residential district. Because this site is 500 feet away from a residential district, these are not applicable. Alameda County also has a noise code, found under Chapter 6.60: Noise. While it does not apply to incorporated areas of the County, it was reviewed for thoroughness. The County noise code limits apply at receiving properties based on their use, and sets various limits based on the duration of the noise. Higher limits are allowed for shorter periods of time. In summary, steady sound is limited at residential receptors to 50 dB(A) during the day hours (0700-to-2200 hours) and 45 dB(A) during the corresponding night hours.

During the night, levels up to 60 dB(A) are allowed for up to 1 minute, 55 dB(A) for up to 5 minutes, and 50 dB(A) for up to 15 minutes in a given hour. Daytime noise code limits for residences are 5 dB higher in level. Commercial noise code limits are 15 dB higher in level than residential limits. The County does not provide any limits for industrial receptors. There is also a provision that says if the ambient sound is greater than the provided limits, then the code limits shall be equal to the ambient sound level. It is not clear whether this code applies to on-site motor vehicles or not. The State of California does not have any site noise regulations but does regulates motor vehicle noise in California Vehicle Code Sections 27150 and 27200. These codes require all motor vehicle to have exhaust mufflers and provide maximum allowable sound levels for various types of vehicles at a distance of 50 feet. In particular, for heavy trucks manufactured after 1987, the maximum sound pressure level permitted is 80 dB(A) at 50 feet. This limit is readily met by vehicles in good working condition.

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Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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A brief discussion of the relevant noise codes is needed. The City code does not provide any quantitative limits for site sound emissions, and State codes for motor vehicles are relative to the vehicle, not the receptor. The County noise code has merit; while not enforceable within the City jurisdiction, it was used as a basis for development of project noise goals. OAA finds that a limit of 45 dB(A) for a residential receptor during the night is generally acceptable for steady noise sources. However, given the density and make-up of the area, it is likely overly stringent if applied here. Based on experience, an urban area such as this would naturally have ambient sound levels far greater than this limit. In our opinion, the County code allowance for excursions that occur between 1 minute and 15 minutes of 55-to-60 dB(A) are nominally acceptable at residential receptors during the night, especially for dwellings nearby well-travelled roadways.

Based on experience, OAA would typically set a project goal for steady HVAC sound of 50 dB(A) at residences during the night. Intermittent maximum sound levels from truck activity should strive to not exceed 55 dB(A). This approach is supported by the County noise code as well as the expected ambient sound levels currently present. While OAA has not carried out our own ambient sound survey, this project noise goal is acceptable and appropriate based on professional experience and several online references that provide ambient sound information for the area.

Site maximum sound levels of this magnitude will be far lower in level than sound produced by the active railway adjacent to the nearby residences.

Various references support this logic. The National Transportation Noise Map of the City of San Leandro shows that the area around the site is expected to experience 24-hour average sound levels of 50-to-60 dB(A), based on data collected in 2018. This is shown graphically in Figure 2 below. In addition, a review of the City of San Leandro 2035 General Plan discusses existing and future ambient noise in Chapter 7: Environmental Hazards Element. Figure 7-6 of this report shows that residences east of the site are within the 60 dB(A) CNEL contour given their distance from Interstate-880. The report qualifies this contour as being normally or conditionally acceptable in Chart 7-2. Note that the General Plan uses the CNEL (Community Noise Equivalent Level) metric, which is calculated from 24-hour data; this metric is commonly used to assist in planning and zoning and is not a metric that is appropriate to evaluate the potential for acoustical impacts or complaints. OAA introduced this reference merely to support the conclusion that this area is inherently active and justify the project noise goal. Using a 24-hour metric for a distribution facility would potentially diminish the presence of the short-term maximum sound levels associated with truck activity and is not recommended.

Ostergaard
acoustical

ASSOCIATES
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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Figure 2 — Image taken from the National Transportation Noise map of San Leandro. Site location is identified on the map.

We understand that, while our recommendations are based on experience and cited references, they are considered speculative. To minimize this speculation, OAA has defaulted to using the County code nighttime limit of 45 dB(A) for steady site sound and 55 dB(A) for maximum intermittent truck sounds for residential receptors. The intermittent limit is appropriate since maximum truck operations will not occur for durations over 5 minutes in a given hour. Rational supporting this is provided in subsequent sections. Project noise goals are not warranted for industrial uses at any time, as they are not considered particularly noise-sensitive receptors.

It should be noted that a specific analysis was not carried out for personal motor vehicles. Based on experience, while they may be greater in quantity, they are significantly lower in level than heavy trucks. Hence, if on-site truck analyses are shown to meet project goals, personal motor vehicle sound will as well.

Ostergaard
Acoustical
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Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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EXPECTED SOUND EMISSIONS
Acoustical modelling software, specifically CadnaA, was used to create and analyze site sound emissions for the site. The model takes into account relevant parameters between the noise source and receptor positions of interest to predict how sound will propagate. In addition to distance attenuation, the model accounts for the effects of terrain, various types of ground cover, shielding by structures, and reflections from buildings. Model results show only the sound emissions of the site, which are directly comparable to project noise goals; ambient sound is not included in the model. In the model, buildings are white, and the site property line is outlined in red. North is pointing generally up in all acoustical modelling figures.

The acoustical model shows the results graphically as A-weighted sound level contours, in 1 dB increments, and tabulates the summed A-weighted sound levels at five discrete locations at the façade of nearby residential receptors. Sound level contours are at ear height, 5 feet above grade.

Location B is at 15 feet above grade to typify an upper story receptor; Locations C through F typify single story receptors at 5 feet above grade. Location A is not used and reserved for future use.

Rooftop HVAC Sound
Rooftop HVAC equipment produces noise that is nominally steady in nature, and hence will not vary significantly over time. Based on similar projects, a conservative estimation is to assume 1 ton of cooling capacity for every 725 ft2 of building area. This equates to about fourteen (14) 25- ton HVAC units evenly distributed on top of the building. The sound power level for each 25-ton unit is assumed to be 93 dB(A) re 1 picowatt based on typical manufacturer’s sound data.

The noise from the 14 rooftop units was included in the HVAC sound model. Noise sources were placed 4 feet above the rooftop, and sound was projected off site. Figure 3 shows the results graphically and tabulates the summed A-weighted sound levels at the five residential receptor Locations. The results show that, with all rooftop units operating, HVAC sound levels at off-site receptors are in the 38-to-40 dB(A) range.

This analysis shows that there is little concern about HVAC sound. HVAC sound is sufficiently controlled via distance and roof shielding effects so that this noise meets the 45 dB(A) project noise goal at all residences by wide margins. Note that for these model results to be realized, acoustical performance of HVAC equipment must be acoustically aligned with what was modelled.

Ostergaard
acoustical

ASSOCIATES
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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Figure 3 — A-weighted sound emission contours, 5 feet above grade, from rooftop HVAC equipment. Each of the rooftop units shown with a blue + sign. Buildings shown in white. Site property line outlined in red. Location B is at 15 feet above grade; all other Locations are at 5 feet above grade.

Proposed Distribution Facility
San Leandro, CA
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Truck Activity
OAA has had the opportunity to visit various distribution and logistics facilities over the years to survey and document the sounds of truck activity. Distribution facilities will have over-the-road line-haul trucks as well as terminal tractors (yard tractors) active on site. Line-haul trucks deliver trailers from off-site whereas terminal tractors do not leave the site and move trailers between the docks and parking areas. Terminal tractors are responsible for the majority of back-up movements on-site. From an acoustical aspect, terminal tractors and line-haul trucks are acoustically equivalent.

Truck noise in typical dock and trailer parking areas can routinely produce maximum sound levels of 79 dB(A) at 50 feet. This sound level was determined based on OAA field data, by looking at a wide variety of truck activity, such as truck movement, air brakes, back-up alarms, and coupling/decoupling, and distilling it to a single conservative maximum level and spectrum for use in acoustical studies such as this. A driving truck exhibits slightly lower maximum sound levels of 74 dB(A) at 50 feet. Personnel vehicles produce typical maximum sound levels of 59 dB(A) at 50 feet, and hence are traditionally not an acoustical concern. The height of a truck source for all truck activity is modelled at a conservative height of 8 feet above grade. OAA has found that using these maximum sound levels at this height ensures a conservative approach to evaluating truck sound. When specific individual activities are modelled at their actual height and sound level, results are typically lower in level than predicted below. For example, many of the high sound level activities, such as back-up alarms and air brakes, occur at a height of 4 feet above grade, not 8 feet. This is a critical detail when evaluating the effectiveness of a sound barrier or berm and when considering intervening topography. It is also important to recognize that all truck noise is dynamic in nature. Maximum sound levels only occur for a short duration and are not representative of the constant sound level produced by on-site trucks.

While there will certainly be multiple trucks on-site at any given time, experience shows that offsite maximum sound levels are governed by specific individual truck activity that occurs closest to a given receptor. Several factors support this. Due to maximum levels being dynamic and short in duration, it is unlikely that multiple truck sound level maximums will occur at the exact same time and location. In addition, safe practices prevent more than one truck from operating at the same time and in the same vicinity. Hence, two short duration maximum sound levels overlapping in a manner that exacerbates the situation is very improbable. Should this extremely rare alignment occur, with two similar sources occurring at the same time and vicinity, emissions would only be 3 dB higher due to the logarithmic nature of sound pressure level addition.

Ostergaard
acoustical
Associates
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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Trucks were modelled at various on-site locations. Of particular interest are the worst-case truck locations; these occur at the eastern portions of the site. Truck yard activity was modelled in areas of the truck yard closest to residential receptors and modelled as a white “+”. A driving truck was also modelled along the onsite driveway east of the building and is shown as a pink “+”. Figures 4 through 6 take the HVAC sound model and add the intermittent maximum sound emissions contributed by on-site heavy truck activity. These figures show the following results:
 Figure 4 shows truck yard activity in the northeast portion of the site. Worst-case maximum sound emissions are 55 dB(A) at Location D and 56 dB(A) at Location E.  Figure 5 provides the results for driving truck activity along the eastern onsite driveway.

Maximum sound emissions range from 51-to-55 dB(A) at all Locations.  Figure 6 shows sound emissions from truck yard activity in the south of the building. Worstcase emissions are 54 dB(A) at Locations B and C.

Overall, model results show that worst-case truck activity will be no greater than 56 dB(A) at offsite residential receptors. Note that Figures show the worst-case truck positions; most activity onsite will occur farther west than presented in this report and will benefit from shielding provided by intervening buildings and additional distance. As such, most activity onsite will be substantially lower than the results presented in this report. In addition to sufficiently low magnitude sound levels, a review of the traffic study, prepared by Kimley Horn and dated January 2024, shows that the proposed project expects approximately 46 truck trips, or 23 individual trucks, daily for this use. That distills down to about 1 truck each hour if spread out equally across the day; in reality, uses such as this will typically have more daytime activity than night. These low trip counts mean that should maximum sound levels occur from truck activity, that they would be infrequent and short in duration. This also supports that maximum sound levels would occur for durations of less than 1 minute in an hour; hence, modelled results would fully comply with the County noise code.

OAA finds that even if the worse-case scenario of 56 dB(A) were to occur for a period of 5 minutes, that this would meet the intent of the County code goals and not result in any negative acoustical impact for this project.

Ostergaard
acoustical
Associates
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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Figure 4 — A-weighted sound level contours 5 feet above grade expected for rooftop equipment and Truck Position 1. Rooftop units shown with a blue “+” sign. Heavy truck yard activity shown with a white “+” sign. Buildings shown in white.

Site property line outlined in red. Location B is at 15 feet above grade; all other Locations are at 5 feet above grade.

Proposed Distribution Facility
San Leandro, CA
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Figure 5 — A-weighted sound level contours 5 feet above grade expected for rooftop equipment and Truck Position 2. Rooftop units shown with a blue “+” sign. Driving truck shown with a pink “+” sign. Buildings shown in white. Site property line outlined in red. Location B is at 15 feet above grade; all other Locations are at 5 feet above grade.

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San Leandro, CA
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Figure 6 — A-weighted sound level contours 5 feet above grade expected for rooftop equipment and Truck Position 3. Rooftop units shown with a blue “+” sign. Heavy truck yard activity shown with a white “+” sign. Buildings shown in white.

Site property line outlined in red. Location B is at 15 feet above grade; all other Locations are at 5 feet above grade.

Proposed Distribution Facility
San Leandro, CA
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Truck Position 3
Sound Emissions
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

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ADDITIONAL IMPACT EVALAUTIONS
While the focus of this study is on site sound emissions from the proposed use and the possible acoustical impact, we understand that environmental reviews traditionally also examine other types of impacts. Specifically, off-site traffic, construction noise, vibration, and airport noise have been analyzed.

Off-site Traffic
While off-site truck routes are not regulated by noise codes, they were reviewed to evaluate their potential for acoustical impact. Actual truck routes are not known but it is logical to assume that all trucks will access the site from Nimitz Freeway (Interstate-880) to the northeast via Davis Street and Doolittle Drive. These are major roads in the area and assumed to be well-travelled at all hours. While this route is in proximity to a few residences, these residences are assumed to not be particularly noise-sensitive as they are adjacent to the Interstate and it’s associated on/off ramps.

Given all the above, offsite routes are not expected to have any negative impact on the area and trucks going to and from the site will blend in with other traffic flow sound in the area.

Construction Noise
Construction noise that will occur during the development of the site is regulated by City noise codes. San Leandro Code §4-1-1115(b) states that construction activity which is adjacent to or across a street or right-of-way from a residential use is prohibited except between 0700-to-1900 hours during the week and between 0800-to-1900 hours on a weekend. No construction is permitted on Federal holidays. The premise of this ordinance is to contain construction activities during the daytime hours when ambient sound is higher in level and residential sensitivity is reduced.

Although construction activity is exempt from noise limits during allowable hours and are temporary in nature, it is worth discussing considerations to minimize the acoustical impact of this activity. The proposed building is almost 590 feet from the nearest dwelling. Earth moving equipment used during the civil construction phase of the project could be slightly closer to offsite receptors temporarily. Construction equipment, such as bulldozers, front end loaders, and dump trucks, can typically produce maximum sound levels of 80 dB(A) at 50 feet. At assumed distances of at least 450 feet from nearby receptors, maximum construction activity sound levels would be in the low-60s. Levels of this magnitude are not uncommon in an active developed area and are not expected to illicit noise complaints or impact the health, safety, and welfare of the Ostergaard
acoustical
Associates
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

Page 15 ends

public. Regardless, to minimize receptor exposure to construction noise during this phase, the following best practice construction mitigation measures will be considered:
❑ Limit all heavy equipment operation to non-noise-sensitive daytime hours and follow allowable town construction hours as applicable.
❑ If possible, limit the number of equipment operating near one receptor at a given time.

Avoid exposing any one receptor to high sound levels for an extended period of time. ❑ Place stationary equipment such as generators, compressors, and office trailers away from receptors.
❑ Avoid having construction parking or laydown areas nearby receptors. ❑ Coordinate any high sound level construction activities with town representatives and provide advance notice to residences as feasible.

Specific noise issues can be individually evaluated for tailored noise mitigation recommendations should traditional methods above not be sufficient.

Vibration
No City code vibration regulations were found. There is a provision in the County noise code, §6.60.050(B.8), that requires that no individual shall operate or permit the operation of any device that creates vibration which is above the vibration perception threshold at or beyond the property boundary of the source. While the County code does not apply within the City limits, this is a typical approach to evaluating vibration impacts and hence was used as criterion for this project.

Off-site vibrations are challenging to quantify; as a result, it is best to discuss vibration comparatively and subjectively to determine if there may be negative impacts. The following were facts were considered:
❑ There are no major vibration producing equipment or activities proposed on site. The primary noise source on site is truck activity. Trucks have rubber tires which significantly reduce any vibration transmitted into the ground and off-site receptors.

Ostergaard
acoustical
Associates
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

Page 16 ends

❑ This site has historically been an industrial use for decades. The proposed use is not dramatically different than other uses in the area, which also accommodate heavy trucks.

Many of these existing industrial uses are closer to residences than this project. ❑ The dominant source of vibration will continue to be rail activity, which is between nearby residences and this project.

Given the above, we conclude there will be no negative impact from vibrations associated with this project.

Airport Noise
Environmental impact studies generally focus on whether the proposed project might have impacts on the surrounding area. When evaluating airport noise, the focus is on whether the airport might have a negative impact on the project.

The project site is in line with, and approximately 4,500 feet east of, Runways 10L/28R and 10R/28L at Oakland International Airport. The site is about 9,000 feet northeast of Oakland International Airport’s longest runway, Runway 12/30.

The Oakland International Airport implements a noise management program which monitors airport noise and mitigates complaints. Extensive information about the program as well as documents and study results can be found online at https://flyquietoak.com/. A review of the resources listed here indicates that runways in line with the site are infrequently used, between 4- 12% of the time. In addition, a long-term sound monitor terminal (Monitor #10) is located on Tudor Court, which coincides with the residences closest to this project. Aircraft Noise Summary portal data show that the majority of maximum aircraft activity here is around 64 dB(A), which is driven by airport arrivals. Data also show that aircraft passovers can produce levels in excess of 80 dB(A). Despite this, the Noise Complaint Dashboard portal data show there have been 27 noise complaints from 7 individuals in San Leandro during the 2023 year. None of these complaints are in the vicinity of the site. Based on these details, OAA concludes that airport operations will not have any negative impact on this industrial use.

Ostergaard
acoustical
Associates
Evaluation of Sound Emissions
Proposed Distribution Facility, San Leandro, CA
5 February 2024

Page 17 ends

CONCLUSION
Plans call for the development of a distribution facility in the San Leandro, Alameda County, California. Noise sources on-site will comprise personal vehicles, heavy trucks, and rooftop HVAC units. Our review concludes that the City and State codes provide some direction but are of limited use. The County noise code has merit, despite not being enforceable within city limits.

Because of this, a project noise goal at potentially sensitive receptors was established based on the County noise code, expected ambient sound levels, and professional experience. Compliance with project goals will meet the intent of the City noise code. Given the surrounding area, steady HVAC site sound emissions should strive to not exceed 45 dB(A) during the nighttime hours at nearby receptors to minimize the potential for complaints. Similarly, intermittent on-site truck activity sound levels should strive to not exceed 55 dB(A). A project noise goal is not warranted for nearby commercial and industrial properties as these properties are not considered noisesensitive.

Analyses show that HVAC sound emissions meet the 45 dB(A) project goal via distance attenuation and roof shielding effects by wide margins. HVAC sound is expected to be below existing average ambient sound levels, and hence, will not able to be detected at nearby residential receptors.

Maximum sound levels produced by on-site heavy truck activity meets the intent of project goals at all nearby existing receptors. Off-site truck routes are also of little acoustical concern to the area as trucks leaving the site will blend in with the existing traffic flow sound in the area and not be discernable from existing activity in the area. Given the above, it is our professional opinion that this project will not have any negative acoustical impact on the surrounding area. Existing sound sources in the area, such as the active railroad corridor and local and distant traffic flow will continue to dominate sound in the area. The project layout represents good acoustical planning and will put the site in a position to minimize the potential for noise complaints.

Ostergaard
acoustical
Associates
Appendix F
Noise Letter Report

Rincon Consultants, Inc.
449 15th Street, Suite 303
Oakland, California 94612
510-834-4455
www.rinconconsultants.com
February 27, 2024
Rincon Project No. 22-13727
Cindy Lemaire, AICP, CNU-A, Senior Planner
City of San Leandro
Community Development Department
835 East 14th Street
San Leandro, California 94577
Via email: [email protected]
Subject: Noise Letter Report for the 880 Doolittle Drive Warehouse Project Dear Justin:

Rincon Consultants, Inc. (Rincon) is pleased to provide this Noise Letter Report prepared for the 880 Doolittle Drive Warehouse Project (project) to ensure that it is designed by the applicant and conditioned by the City of San Leandro (City) to comply with the City’s exterior and interior noise standards. The project would involve consolidating the two parcels comprising the project site into a single parcel, demolishing existing vacant structures, and developing a new industrial shell building on site. The proposed project also includes a new surface parking lot, internal circulation roadways, new utility connections, and landscaping. Nearby noise-sensitive receptors (single-family residences) would temporarily be exposed to project construction noise. This acoustical analysis reviews detailed architectural plans provided by HPA Architecture, dated September 20, 2022. Fundamentals of noise and acoustics are included in the EIR.

Regulatory Setting
City of San Leandro Noise and Land Use Compatibility
The City of San Leandro adopted the 2035 General Plan in 2016 (City of San Leandro 2016a). The City of San Leandro General Plan establishes the following goals and policies that would apply to the project:

Goal EH-7 Ensure that noise associated with the day-to-day activities of San Leandro residents and businesses does not impede the peace and quiet of the community.

Policy EH-7.3 Residential Exterior Noise Standard. Strive to maintain an exterior noise level of no more than 60 dB Ldn in residential areas. Recognizing that some San Leandro neighborhoods already exceed the noise level, encourage a variety of noise abatement measures that benefit these areas.

Policy EH-7.7 Noise Reduction Measures. Encourage local businesses to reduce noise impacts on the community by replacing excessively noisy equipment and machinery, applying noise-reduction technology, and following operating procedures that limit the potential for conflicts.

Policy EH-7.9 Vibration Impacts. Limit the potential for vibration impacts from construction and ongoing operations to disturb sensitive uses such as housing and schools.

City of San Leandro
880 Doolittle Drive Warehouse Project Noise Letter Report 2 City of San Leandro Municipal Code
The City of San Leandro Municipal Code (City of San Leandro 2023) includes noise standards and regulations. The following sections of the Noise Ordinance are relevant to the analysis:

Section 4-1-115 of the San Leandro Municipal Code prohibits certain acts related to noise, such as construction-related noise near residential uses outside of the hours of 7 a.m. and 7 p.m. on weekdays and 8 a.m. and 7 p.m. on weekends. Noise within public parks and noise that conflicts with residential uses is also prohibited.

Neither the City of San Leandro nor the County of Alameda has specific and/or quantitative regulatory standards for construction or operational vibration sources. San Leandro Zoning Code Part IV, Article 16, Division 3, Provision 4-1670B, Vibration, requires that no use, activity, or process produce vibrations that are perceptible without instruments by a reasonable person at the property lines of a site. This performance standard applies to all land use classifications in all zoning districts.

Construction Noise Standards
While the City does not have specific noise level criteria for assessing construction noise impact, the Federal Transit Administration (FTA) has developed guidance for determining if construction of a project would expose various land uses to significant noise levels or if a project would result in a substantial temporary increase in noise levels (FTA 2018). Based on FTA guidance, a significant impact would occur if project-generated construction noise exceeds the 8-hour 80 dBA Leq noise limit at nearby residences.

Groundborne Vibration Standards
Groundborne vibration of concern in environmental analysis consists of the oscillatory waves that move from a source through the ground to adjacent structures. While people have varying sensitivities to vibrations at different frequencies, in general they are most sensitive to low-frequency vibration.

Vibration in buildings, such as from nearby construction activities, may cause windows, items on shelves, and pictures on walls to rattle.

Vibration sensitive receptors are similar to noise sensitive receptors, including residences and institutional uses such as schools, churches, and hospitals. However, vibration sensitive receptors also include buildings where vibrations may interfere with vibration-sensitive equipment. Vibration sensitive receptors near the site include industrial buildings adjacent to the project boundary to the north and west; industrial buildings 35 feet to the south and an industrial building 95 feet to the east; and single-family residential building 510 feet to the northeast of the project site.

Vibration limits used in this analysis to determine a potential impact to local land uses from construction activities, such as, vibratory compaction or excavation, are based on information contained in the 2018 FTA Transit Noise and Vibration Impact Assessment Manual. Groundborne vibration levels that could induce potential architectural damage to buildings are identified in Table 1.

Based on FTA recommendations, limiting vibration levels to below 0.5 in/sec peak particle velocity (PPV) at Reinforced concrete, steel, or timber (no plaster) (which would apply to the nearby industrial building structures) would prevent architectural damage.

City of San Leandro
880 Doolittle Drive Warehouse Project Noise Letter Report 3 Table 1 Groundborne Vibration Architectural Damage Criteria Building Category PPV (in/sec)
I. Reinforced concrete, steel, or timber (no plaster) 0.5 II. Engineered concrete and masonry (no plaster) 0.3
III. Non-engineered timber and masonry buildings 0.2
IV. Buildings extremely susceptible to vibration damage 0.12 in/sec = inches per second; PPV = peak particle velocity Source: FTA 2018
Project Impacts
Construction Noise
To determine construction noise impacts, noise was estimated using the Federal Highway Administration (FHWA) Roadway Construction Noise Model (RCNM) Version 1.1. Shown in Table 2, noise was modeled at the property line of the nearest residential noise-sensitive receivers from the closest property line of on-site construction activity.

Table 2 Estimated Noise Levels by Construction Phase
Leq dBA
Construction Phase
RCNM
Reference Noise Level1
50 feet
Residences to the Northeast
(510 feet)
Demolition 82 62
Site Preparation 83 63
Grading 84 64
Building Construction 78 58
Paving 78 58
1 RCNM reference noise levels are noise levels generated during each construction phase measured from a point 50 feet from the location of the construction phase.

Source: Roadway Construction Noise Model. See Attachment A for modeling outputs.

From the eastern boundary of the project site, the nearest noise-sensitive receivers include a singlefamily residence located approximately 510 feet northeast. As shown in Table 2, construction noise levels of up to 64 dBA Leq during grading would not exceed the FTA residential daytime standard of 80 dBA Leq (8-hour). Therefore, construction noise impacts would be less than significant.

Groundborne Vibration
Construction activities have the greatest potential to generate ground-borne vibration affecting nearby receptors, especially during paving of the project site. Construction activities known to generate excessive groundborne vibration, such as pile driving and blasting, would not be needed to construct the proposed project. The greatest vibratory source during construction in the project vicinity would be a roller used during paving. Construction vibration estimates are based on vibration levels reported by the FTA. Table 3 shows typical vibration levels for various pieces of construction equipment used in the assessment of construction vibration.

City of San Leandro
880 Doolittle Drive Warehouse Project Noise Letter Report 4 Table 3 Construction Vibration Levels
Equipment
in/sec PPV
Reference
Level
25 feet
Industrial Buildings to
the North and West
10 feet
Industrial Building
to the South
35 feet
Industrial Building to
the East
95 feet
Vibratory Roller 0.210 0.830 0.127 0.028
Large Bulldozer 0.089 0.352 0.054 0.012
Loaded Trucks 0.076 0.300 0.046 0.010
Small Bulldozer 0.003 0.198 0.030 0.007
Static Roller 0.050 0.012 0.002 <0.001
Threshold for Structural
Damage to Building

0.5 0.5 0.5
Threshold Exceeded?

Yes No No
in/sec = inches per second; PPV = peak particle velocity Notes: Vibration analysis worksheets are included in the Appendix to this report.

Source: FTA 2018
Based on the recommendations of the FTA, shown in Table 1, limiting vibration levels to below 0.5 in/sec PPV at industrial structures would prevent architectural damage regardless of building construction type. As provided by the client, the greatest anticipated source of vibration during project construction activities would be from a vibratory roller, which would be used during paving. Based on the project site plan, it is assumed the vibratory roller may be used within 10 feet of the nearest offsite industrial structures to the north and west of the project site during paving activities. A vibratory roller generates approximately 0.830 in/sec PPV at 10 feet, which would exceed the significance threshold of 0.5 inches per second (in/sec) PPV. Therefore, if uncontrolled, proposed project construction activities would have a significant impact on the generation or exposure of persons to excessive groundborne vibration. Other construction equipment would not exceed the threshold.

Operation of the proposed project would not include substantial sources of vibration. Therefore, the operation of the proposed project would have no impact on exposure to excessive groundborne vibration or groundborne noise levels.

Mitigation Measures
The following mitigation measure is recommended:

N-1 Construction Vibration Control Plan
For paving activities within 15 feet of the sensitive receptors to the north and west, use of a static roller in lieu of a vibratory roller shall be implemented. City staff shall verify that this requirement is incorporated into construction plans prior to issuance of a building permit.

City of San Leandro
880 Doolittle Drive Warehouse Project Noise Letter Report 5 Significance after Mitigation
Mitigation N-1 would require that use of a static roller in lieu of a vibratory roller is used within 15 feet of off-site receptors to reduce construction-related vibration. Specifically, use of a static roller would generate vibration levels of approximately 0.05 in/sec PPV at a distance of 25 feet (McIver 2012). A static roller would generate approximately 0.198 in/sec PPV within 10 feet of sensitive receptors to the north and west. With implementation of Mitigation measure N-1, project groundborne vibration would be less than the significance threshold of 0.5 in/sec PPV at off-site sensitive receptors to the north and west. Therefore, with mitigation, project construction vibration impacts would be less than significant.

Traffic Noise
A project normally has a significant effect on the environment related to noise if it substantially increases the ambient noise levels for adjoining areas. Changes of less than 1 dBA are usually indiscernible. Changes of 1 to 3 dBA are detectable under quiet, controlled conditions. Most people can detect changes in sound levels of approximately 3 dBA under normal, quiet conditions. A change of 5 dBA is readily discernible to most people in an exterior environment. Therefore, less of an increase from roadway noise is allowed. Based on similar criteria from the Federal Aviation Administration (FAA), the following thresholds of significance are used to assess roadway vehicle noise impacts at sensitive receiver locations:
 Greater than 1.5 dBA CNEL increase for ambient noise environments of 65 dBA CNEL and higher;
 Greater than 3 dBA CNEL increase for ambient noise environments of 60-64 dBA CNEL;  Greater than 5 dBA CNEL increase for ambient noise environments of less than 60 dBA CNEL and where the resulting future noise level would exceed 60 dBA CNEL.

Using information provided by Kimley Horn (Kimley Horn 2024), the proposed project would generate up to 1,543 new daily peak vehicle trips that would increase noise levels on nearby roadways. The proposed project would not make substantial alterations to roadway alignments or substantially change the vehicle classifications mix on local roadways. Therefore, the primary factor affecting offsite noise levels would be increased traffic volumes. The project’s increase in traffic noise was estimated by adding the project daily trip generation to the existing average daily traffic (ADT) volume on the surrounding roadways analyzed in the City of San Leandro General Plan Update Draft EIR (City of San Leandro 2016b).

The existing ADT on Doolittle Road, between Adams Avenue to Davis Street, is 29,400. This addition of 1,543 daily vehicle trips would result in an increase in traffic noise that would be approximately 0.2 dBA CNEL. As stated in the City of San Leandro General Plan Update Draft EIR (City of San Leandro 2016b), the existing ambient noise level for Doolittle Drive, between Adams Avenue to Davis Street, is

71.8 dBA at 50 feet. A significant impact would occur if project-related traffic increases the 71.8 dBA ambient noise environment of noise-sensitive locations by 1.5 dBA or more. As the project would result in a traffic noise increase 0.2 dBA, the project’s traffic noise increase would not exceed 1.5 dBA or more, and impacts would be less than significant.

City of San Leandro
880 Doolittle Drive Warehouse Project Noise Letter Report 6 This concludes the acoustical analysis and construction noise assessment for the subject project. If there are questions regarding the content of this letter report, please feel free to contact me.

Sincerely,
Rincon Consultants, Inc.

Jesse McCandless Bill Vosti
Noise Specialist Senior Environmental Planner
City of San Leandro
880 Doolittle Drive Warehouse Project Noise Letter Report 7 References
Federal Highway Administration (FHWA). 2006. FHWA Highway Construction Noise Handbook. (FHWAHEP-06-015; DOT-VNTSC-FHWA-06-02). Available at:
http://www.fhwa.dot.gov/environment/construction_noise/handbook. _____. 2011. Highway Traffic Noise: Analysis and Abatement Guidance. December 2011. https://www.fhwa.dot.gov/environment/noise/regulations_and_guidance/analysis_and_aba tement_guidance/revguidance.pdf (accessed February 2024).

Federal Transit Administration (FTA). 2018. Transit Noise and Vibration Impact Assessment Manual. https://www.transit.dot.gov/sites/fta.dot.gov/files/docs/researchinnovation/118131/transit-noise-and-vibration-impact-assessment-manual-fta-report-no0123_0.pdf (accessed February 2024).

Kimley Horn. 2024. Transportation Impact Analysis – 880 Doolittle Drive. January 2024.

McIver, IR. 2012. Ground Vibration from Road
Construction. https://www.epa.govt.nz/assets/FileAPI/proposal/NSP000005/Hearings/f73d 4769a3/APSOC-Closing-Subs-Attachment-report.pdf (accessed February 2024).

San Leandro, City of. 2016a. San Leandro 2035 General Plan – Environmental Hazards Element.

September 19, 2016 (accessed February 2024).

San Leandro, City of. 2016b. General Plan Update Draft Environmental Impact Report, June 1, 2016 (accessed February 2024).

San Leandro, City of. 2023. San Leandro Municipal Code, June 2023 (accessed February 2024).

Appendix
Noise
Construction Noise
Construction Vibration
Noise Level @ 50 ft Single Family Residential to NE
Distance 510
Demolition 82 61.828
Site Preparation 83 62.828
Grading 84 63.828
Building Construction 78 57.828
Paving 78 57.828
Vibration @ 25 ft Industrial to the N & W Industrial to the South Industrial to the East Distance 10 35 95
Vibratory Roller 0.21 0.830 0.127 0.028
Large Bulldozer 0.089 0.352 0.054 0.012
Loaded Trucks 0.076 0.300 0.046 0.010
Static Roller 0.05 0.198 0.030 0.007
Small Bulldozer 0.003 0.012 0.002 0.000

San Leandro City CouncilMay 5, 2025

San Leandro City Council
May 5, 2025