Santa Clara Area, California, Western Part

Transcription

1 Santa Clara Area, California, Western Part 101 Urban land, 0 to 2 percent slopes, basins Map Unit Setting Landscape: Alluvial plains, basins Elevation: 0 to 80 feet Mean annual precipitation: 14 to 30 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land, alluvial fans: 98 percent Minor components: 2 percent Description of Urban Land, Alluvial Fans Setting Landform: Basin floors Parent material: Disturbed and human transported material Minor Components Xerorthents, anthropogenic fill Percent of map unit: 2 percent Landform: Alluvial fans, basin floors Down-slope shape: Convex 123 Urban Land-Xerorthents, anthropogenic fill complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains, basins Elevation: 0 to 350 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Xerorthents, anthropogenic fill, and similar soils: 30 percent 13

2 Description of Urban Land Setting Landform: Alluvial fans, flood plains Parent material: Disturbed and human transported material Description of Xerorthents, Anthropogenic Fill Setting Landform: Basin floors, alluvial fans Parent material: Human transported material Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline (0.0 to 0.2 mmhos/cm) Available water capacity: Low (about 4.8 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 2s Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 2 inches: Sandy clay loam 2 to 10 inches: Sandy clay loam 10 to 20 inches: Sandy clay loam 20 to 30 inches: Very gravelly sandy clay loam 30 to 39 inches: Gravelly sandy clay loam 130 Urban land-still complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains Elevation: 20 to 410 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F 14

3 Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Still and similar soils: 25 percent Minor components: 5 percent Description of Urban Land Setting Landform: Alluvial fans, flood plains Parent material: Disturbed and human transported material Description of Still Setting Landform: Alluvial fans, flood plains Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high to high (0.57 to 5.95 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline (0.5 to 2.0 mmhos/cm) Available water capacity: High (about 9.3 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 1 Land capability (nonirrigated): 3s Hydrologic Soil Group: A Typical profile 0 to 2 inches: Sandy loam 2 to 12 inches: Very fine sandy loam 12 to 20 inches: Silt loam 20 to 33 inches: Silt loam 33 to 37 inches: Loam 37 to 51 inches: Loam 51 to 62 inches: Loam 62 to 72 inches: Loam 15

4 Minor Components Elpaloalto Percent of map unit: 5 percent Landform: Alluvial fans, flood plains 131 Urban land-elpaloalto complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains, basins Elevation: 10 to 390 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Elpaloalto and similar soils: 23 percent Minor components: 7 percent Description of Urban Land Setting Landform: Alluvial fans Parent material: Disturbed and human transported material Description of Elpaloalto Setting Landform: Alluvial fans Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches 16

5 Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline to very slightly saline (0.4 to 4.0 mmhos/cm) Sodium adsorption ratio, maximum: 2.0 Available water capacity: High (about 9.6 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 1 Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 8 inches: Slightly decomposed plant material 8 to 17 inches: Clay loam 17 to 26 inches: Silty clay loam 26 to 35 inches: Silty clay loam 35 to 47 inches: Silty clay loam 47 to 71 inches: Silty clay loam 71 to 94 inches: Silty clay loam Minor Components Still Percent of map unit: 5 percent Landform: Alluvial fans, flood plains Hangerone, drained Percent of map unit: 2 percent Landform: Basin floors 135 Urban land-stevenscreek complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains Elevation: 20 to 540 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Stevenscreek and similar soils: 25 percent Minor components: 5 percent 17

6 Description of Urban Land Setting Landform: Alluvial fans Parent material: Disturbed and human transported material Description of Stevenscreek Setting Landform: Alluvial fans Landform position (two-dimensional): Toeslope Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 5 percent Maximum salinity: Nonsaline (0.0 to 1.0 mmhos/cm) Available water capacity: High (about 10.2 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 1 Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 2 inches: Sandy loam 2 to 9 inches: Silt loam 9 to 18 inches: Silty clay loam 18 to 27 inches: Silty clay loam 27 to 39 inches: Clay loam 39 to 61 inches: Sandy clay loam 61 to 70 inches: Sandy clay loam Minor Components Flaskan Percent of map unit: 5 percent Landform: Alluvial fans Landform position (three-dimensional): Side slope 18

7 140 Urban land-flaskan complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains Elevation: 20 to 660 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Flaskan and similar soils: 20 percent Minor components: 10 percent Description of Urban Land Setting Landform: Alluvial fans Parent material: Disturbed and human transported material Description of Flaskan Setting Landform: Alluvial fans Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm) Available water capacity: Low (about 5.4 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 2s 19

8 Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 2 inches: Sandy loam 2 to 7 inches: Sandy clay loam 7 to 17 inches: Gravelly sandy clay loam 17 to 31 inches: Gravelly sandy clay loam 31 to 59 inches: Very gravelly sandy loam Minor Components Pachic haploxerolls, loamy-skeletal Percent of map unit: 5 percent Landform: Alluvial fans Landelspark Percent of map unit: 2 percent Landform: Alluvial fans Botella Percent of map unit: 2 percent Landform: Alluvial fans Stevenscreek Percent of map unit: 1 percent Landform: Alluvial fans Landform position (two-dimensional): Toeslope 144 Flaskan sandy clay loam, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains Elevation: 30 to 450 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days 20

9 Map Unit Composition Flaskan, sandy clay loam, and similar soils: 85 percent Minor components: 15 percent Description of Flaskan, Sandy Clay Loam Setting Landform: Stream terraces, alluvial fans Landform position (two-dimensional): Backslope Landform position (three-dimensional): Side slope Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm) Available water capacity: Moderate (about 8.2 inches) Interpretive groups Farmland classification: Prime farmland if irrigated Land capability classification (irrigated): 2s Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 5 inches: Sandy clay loam 5 to 18 inches: Sandy clay loam 18 to 30 inches: Sandy clay loam 30 to 45 inches: Gravelly clay loam 45 to 51 inches: Gravelly sandy clay loam 51 to 59 inches: Very gravelly sandy clay loam Minor Components Pachic haploxerolls, loamy skeletal Percent of map unit: 5 percent Landform: Alluvial fans Landform position (two-dimensional): Toeslope Landelspark Percent of map unit: 5 percent Landform: Alluvial fans 21

10 Botella Percent of map unit: 5 percent Landform: Alluvial fans 145 Urbanland-Hangerone complex, 0 to 2 percent slopes, drained Map Unit Setting Landscape: Basins Elevation: 0 to 220 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Hangerone, drained, and similar soils: 25 percent Minor components: 5 percent Description of Urban Land Setting Landform: Basin floors Parent material: Disturbed and human transported material Description of Hangerone, Drained Setting Landform: Basin floors Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None 22

11 Calcium carbonate, maximum content: 25 percent Gypsum, maximum content: 2 percent Maximum salinity: Nonsaline to very slightly saline (0.2 to 4.0 mmhos/cm) Sodium adsorption ratio, maximum: 5.0 Available water capacity: Moderate (about 8.3 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 2s Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 9 inches: Clay 9 to 17 inches: Clay 17 to 27 inches: Clay 27 to 35 inches: Clay 35 to 45 inches: Clay loam 45 to 72 inches: Gravelly loam 72 to 89 inches: Clay Minor Components Clear lake Percent of map unit: 2 percent Landform: Basin floors Bayshore Percent of map unit: 2 percent Landform: Basin floors Embarcadero Percent of map unit: 1 percent Landform: Basin floors 160 Urbanland-Clear Lake complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains, basins Elevation: 0 to 230 feet Mean annual precipitation: 14 to 24 inches 23

12 Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 65 percent Clear lake and similar soils: 25 percent Minor components: 10 percent Description of Urban Land Setting Landform: Basin floors Parent material: Disturbed and human transported material Description of Clear Lake Setting Landform: Basin floors Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 5 percent Gypsum, maximum content: 1 percent Maximum salinity: Nonsaline to very slightly saline (0.1 to 3.0 mmhos/cm) Sodium adsorption ratio, maximum: 2.0 Available water capacity: High (about 9.6 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 2s Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 9 inches: Silty clay 9 to 14 inches: Silty clay 14 to 32 inches: Silty clay 32 to 50 inches: Silty clay 50 to 66 inches: Silty clay 24

13 Minor Components Campbell Percent of map unit: 5 percent Landform: Alluvial fans Hangerone, drained Percent of map unit: 5 percent Landform: Basin floors 165 Urbanland-Campbell complex, 0 to 2 percent slopes, protected Map Unit Setting Landscape: Alluvial plains, basins Elevation: 0 to 240 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Campbell, protected, and similar soils: 20 percent Minor components: 10 percent Description of Urban Land Setting Landform: Alluvial fans Parent material: Disturbed and human transported material Description of Campbell, Protected Setting Landform: Alluvial fans Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics 25

14 Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 15 percent Maximum salinity: Nonsaline to very slightly saline (1.0 to 4.0 mmhos/cm) Sodium adsorption ratio, maximum: 5.0 Available water capacity: High (about 10.4 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 1 Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 10 inches: Silt loam 10 to 24 inches: Silt loam 24 to 31 inches: Silty clay loam 31 to 38 inches: Silty clay loam 38 to 51 inches: Silty clay loam 51 to 71 inches: Silty clay 71 to 79 inches: Silty clay Minor Components Newpark Percent of map unit: 5 percent Landform: Alluvial fans Clear lake Percent of map unit: 5 percent Landform: Basin floors 170 Urbanland-Landelspark complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains 26

15 Elevation: 40 to 470 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Landelspark and similar soils: 20 percent Minor components: 10 percent Description of Urban Land Setting Landform: Alluvial fans Parent material: Disturbed and human transported material Description of Landelspark Setting Landform: Alluvial fans Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: 16 to 40 inches to strongly contrasting textural stratification Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 2 percent Maximum salinity: Nonsaline to very slightly saline (0.7 to 3.0 mmhos/cm) Available water capacity: Low (about 3.3 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 1 Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 1 inches: Slightly decomposed plant material 1 to 4 inches: Sandy loam 4 to 10 inches: Sandy clay loam 10 to 19 inches: Sandy clay loam 19 to 23 inches: Very gravelly sand 23 to 35 inches: Silty clay loam 35 to 55 inches: Clay loam 27

16 55 to 79 inches: Sandy clay loam Minor Components Flaskan Percent of map unit: 5 percent Landform: Alluvial fans Landform position (three-dimensional): Side slope Pachic haploxerolls, loamy-skeletal Percent of map unit: 5 percent Landform: Alluvial fans 175 Urbanland-Botella complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains Elevation: 40 to 560 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 75 percent Botella and similar soils: 20 percent Minor components: 5 percent Description of Urban Land Setting Landform: Alluvial fans Parent material: Disturbed and human transported material Description of Botella Setting Landform: Alluvial fans Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics 28

17 Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Maximum salinity: Nonsaline (0.0 to 2.0 mmhos/cm) Available water capacity: High (about 9.7 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 1 Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 7 inches: Sandy clay loam 7 to 14 inches: Sandy clay loam 14 to 21 inches: Clay loam 21 to 34 inches: Clay loam 34 to 55 inches: Clay loam 55 to 68 inches: Clay loam Minor Components Flaskan Percent of map unit: 5 percent Landform: Alluvial fans Landform position (three-dimensional): Side slope 180 Urbanland-Newpark complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains Elevation: 10 to 190 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Newpark and similar soils: 20 percent Minor components: 10 percent 29

18 Description of Urban Land Setting Landform: Alluvial fans Parent material: Disturbed and human transported material Description of Newpark Setting Landform: Alluvial fans Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Moderately well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 10 percent Gypsum, maximum content: 2 percent Maximum salinity: Nonsaline to very slightly saline (1.0 to 3.0 mmhos/cm) Sodium adsorption ratio, maximum: 2.0 Available water capacity: High (about 11.2 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 1 Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 8 inches: Silty clay loam 8 to 18 inches: Silty clay loam 18 to 27 inches: Silty clay loam 27 to 36 inches: Silty clay loam 36 to 52 inches: Silty clay loam 52 to 63 inches: Fine sandy loam 63 to 79 inches: Fine sandy loam Minor Components Still Percent of map unit: 5 percent Landform: Alluvial fans 30

19 Elpaloalto Percent of map unit: 5 percent Landform: Alluvial fans 185 Urban Land - Bayshore complex, 0 to 2 percent slopes, drained Map Unit Setting Landscape: Alluvial plains, basins Elevation: 10 to 90 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 70 percent Bayshore and similar soils: 20 percent Minor components: 10 percent Description of Urban Land Setting Landform: Alluvial fans Parent material: Disturbed and human transported material Description of Bayshore Setting Landform: Basin floors Parent material: Alluvium derived from metamorphic and sedimentary rock and/or alluvium derived from metavolcanics Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Poorly drained Capacity of the most limiting layer to transmit water (Ksat): Moderately high (0.20 to 0.57 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None 31

20 Frequency of ponding: None Calcium carbonate, maximum content: 20 percent Maximum salinity: Nonsaline (0.1 to 0.3 mmhos/cm) Sodium adsorption ratio, maximum: 1.0 Available water capacity: High (about 9.6 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 1 Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 3 inches: Loam 3 to 12 inches: Loam 12 to 26 inches: Loam 26 to 38 inches: Sandy clay loam 38 to 51 inches: Sandy clay loam 51 to 61 inches: Gravelly sandy loam Minor Components Hangerone, drained Percent of map unit: 10 percent Landform: Basin floors 317 Urbanland-Cropley complex, 0 to 2 percent slopes Map Unit Setting Landscape: Alluvial plains Elevation: 10 to 530 feet Mean annual precipitation: 14 to 24 inches Mean annual air temperature: 57 to 61 degrees F Frost-free period: 275 to 325 days Map Unit Composition Urban land: 75 percent Cropley and similar soils: 25 percent Description of Urban Land Setting Landform: Alluvial fans Landform position (two-dimensional): Toeslope 32

21 Parent material: Disturbed and human transported material Description of Cropley Setting Landform: Alluvial fans Landform position (two-dimensional): Toeslope Parent material: Alluvium derived from calcareous shale Properties and qualities Slope: 0 to 2 percent Depth to restrictive feature: More than 80 inches Drainage class: Well drained Capacity of the most limiting layer to transmit water (Ksat): Moderately low to moderately high (0.06 to 0.20 in/hr) Depth to water table: More than 80 inches Frequency of flooding: None Frequency of ponding: None Calcium carbonate, maximum content: 15 percent Gypsum, maximum content: 2 percent Maximum salinity: Nonsaline to very slightly saline (1.0 to 3.0 mmhos/cm) Sodium adsorption ratio, maximum: 5.0 Available water capacity: High (about 9.1 inches) Interpretive groups Farmland classification: Not prime farmland Land capability classification (irrigated): 2s Land capability (nonirrigated): 3s Hydrologic Soil Group: C Typical profile 0 to 4 inches: Clay 4 to 11 inches: Clay 11 to 24 inches: Clay 24 to 33 inches: Clay 33 to 51 inches: Clay 51 to 57 inches: Sandy clay loam 57 to 63 inches: Sandy clay loam 33

22 Soil Information for All Uses Soil Properties and Qualities The Soil Properties and Qualities section includes various soil properties and qualities displayed as thematic maps with a summary table for the soil map units in the selected area of interest. A single value or rating for each map unit is generated by aggregating the interpretive ratings of individual map unit components. This aggregation process is defined for each property or quality. Soil Erosion Factors Soil Erosion Factors are soil properties and interpretations used in evaluating the soil for potential erosion. Example soil erosion factors can include K factor for the whole soil or on a rock free basis, T factor, wind erodibility group and wind erodibility index. K Factor, Rock Free Erosion factor K indicates the susceptibility of a soil to sheet and rill erosion by water. Factor K is one of six factors used in the Universal Soil Loss Equation (USLE) and the Revised Universal Soil Loss Equation (RUSLE) to predict the average annual rate of soil loss by sheet and rill erosion in tons per acre per year. The estimates are based primarily on percentage of silt, sand, and organic matter and on soil structure and saturated hydraulic conductivity (Ksat). Values of K range from 0.02 to Other factors being equal, the higher the value, the more susceptible the soil is to sheet and rill erosion by water. "Erosion factor Kf (rock free)" indicates the erodibility of the fine-earth fraction, or the material less than 2 millimeters in size. 34

23 S Mary Ave Lawrence Expy 37 28' 15'' 37 18' 26'' ' 24'' ' 17'' Oak Grove Ave Junipero Serra Blvd Woodland Ave Page Mill Rd University Ave Alma St Arastradero Rd Middlefield Rd Foothill Expy W Fremont Rd Purissima Rd Elena Rd East Palo Alto W Bayshore Rd Louis Rd Main St Burke Rd San Antonio Rd Los Altos W Middlefield Rd S El Monte Ave Charleston Rd Central Expy Foothill Expy Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. Miramonte Ave Central Expy Mountain View Grant Rd Foothill Blvd Bernardo Ave E Middlefield Rd S Bernardo Ave McClellan Rd Hollenbeck Ave N Mathilda Ave Sunnyvale Monta Vista Meters 0 1,500 3,000 6,000 9,000 Feet 0 5,000 10,000 20,000 30,000 Custom Soil Resource Report Map K Factor, Rock Free N Stelling Rd S Mathilda Ave N Mathilda Ave E Caribbean Dr N Fair Oaks Ave E Arques Ave Kifer Rd E Homestead Rd Cupertino Bollinger Rd Tasman Dr Tasman Dr Monroe St Pomeroy Ave Scott Blvd Kiely Blvd Great America Pkwy San Tomas Expy Lafayette St Homestead Rd Pruneridge Ave Moorpark Ave Williams Rd San Tomas Expy N 1st St E Tasman Dr De la Cruz Blvd Cruz Blvd Market St N Bascom Ave Coleman Ave Park Ave Milpitas S Abel St E Trimble Rd E Brokaw Rd Skyport Dr State Hwy 82 Race St Jacklin Rd S Main St N 4th St Murphy Ave Oakland Rd N 10th St S 1st St Bird Ave ' 47'' ' 56'' ' 6'' 37 18' 17''

24 Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Units Soil Ratings Not rated or not available Political Features Cities Water Features Streams and Canals Transportation Rails MAP LEGEND Interstate Highways US Routes Major Roads MAP INFORMATION Map Scale: 1:130,000 if printed on A size (8.5" 11") sheet. The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for accurate map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: UTM Zone 10N NAD83 This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Santa Clara Area, California, Western Part Survey Area Data: Version 1, Jul 27, 2010 Date(s) aerial images were photographed: 6/12/2005; 6/13/2005 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

25 Table K Factor, Rock Free K Factor, Rock Free Summary by Map Unit Santa Clara Area, California, Western Part (CA641) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 101 Urban land, 0 to 2 percent slopes, basins % 123 Urban Land-Xerorthents, anthropogenic fill complex, 0 to 2 percent slopes 130 Urban land-still complex, 0 to 2 percent slopes 131 Urban land-elpaloalto complex, 0 to 2 percent slopes 135 Urban land-stevenscreek complex, 0 to 2 percent slopes 140 Urban land-flaskan complex, 0 to 2 percent slopes 144 Flaskan sandy clay loam, 0 to 2 percent slopes 145 Urbanland-Hangerone complex, 0 to 2 percent slopes, drained 160 Urbanland-Clear Lake complex, 0 to 2 percent slopes 165 Urbanland-Campbell complex, 0 to 2 percent slopes, protected 170 Urbanland-Landelspark complex, 0 to 2 percent slopes 175 Urbanland-Botella complex, 0 to 2 percent slopes 180 Urbanland-Newpark complex, 0 to 2 percent slopes 185 Urban Land - Bayshore complex, 0 to 2 percent slopes, drained 317 Urbanland-Cropley complex, 0 to 2 percent slopes % % % % % % % % % % % % % % Totals for Area of Interest 2, % Rating Options K Factor, Rock Free Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Layer Options: Surface Layer 37

26 Soil Physical Properties Soil Physical Properties are measured or inferred from direct observations in the field or laboratory. Examples of soil physical properties include percent clay, organic matter, saturated hydraulic conductivity, available water capacity, and bulk density. Percent Clay Clay as a soil separate consists of mineral soil particles that are less than millimeter in diameter. The estimated clay content of each soil layer is given as a percentage, by weight, of the soil material that is less than 2 millimeters in diameter. The amount and kind of clay affect the fertility and physical condition of the soil and the ability of the soil to adsorb cations and to retain moisture. They influence shrinkswell potential, saturated hydraulic conductivity (Ksat), plasticity, the ease of soil dispersion, and other soil properties. The amount and kind of clay in a soil also affect tillage and earth-moving operations. Most of the material is in one of three groups of clay minerals or a mixture of these clay minerals. The groups are kaolinite, smectite, and hydrous mica, the best known member of which is illite. For each soil layer, this attribute is actually recorded as three separate values in the database. A low value and a high value indicate the range of this attribute for the soil component. A "representative" value indicates the expected value of this attribute for the component. For this soil property, only the representative value is used. 38

27 S Mary Ave Lawrence Expy 37 28' 15'' 37 18' 26'' ' 24'' ' 17'' Oak Grove Ave Junipero Serra Blvd Woodland Ave Page Mill Rd University Ave Alma St Arastradero Rd Middlefield Rd Foothill Expy W Fremont Rd Purissima Rd Elena Rd East Palo Alto W Bayshore Rd Louis Rd Main St Burke Rd San Antonio Rd Los Altos W Middlefield Rd S El Monte Ave Charleston Rd Central Expy Foothill Expy Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. Miramonte Ave Central Expy Mountain View Grant Rd Foothill Blvd Bernardo Ave E Middlefield Rd S Bernardo Ave McClellan Rd Hollenbeck Ave N Mathilda Ave Sunnyvale Monta Vista Meters 0 1,500 3,000 6,000 9,000 Feet 0 5,000 10,000 20,000 30,000 Custom Soil Resource Report Map Percent Clay N Stelling Rd S Mathilda Ave N Mathilda Ave E Caribbean Dr N Fair Oaks Ave E Arques Ave Kifer Rd E Homestead Rd Cupertino Bollinger Rd Tasman Dr Tasman Dr Monroe St Pomeroy Ave Scott Blvd Kiely Blvd Great America Pkwy San Tomas Expy Lafayette St Homestead Rd Pruneridge Ave Moorpark Ave Williams Rd San Tomas Expy N 1st St E Tasman Dr De la Cruz Blvd Cruz Blvd Market St N Bascom Ave Coleman Ave Park Ave Milpitas S Abel St E Trimble Rd E Brokaw Rd Skyport Dr State Hwy 82 Race St Jacklin Rd S Main St N 4th St Murphy Ave Oakland Rd N 10th St S 1st St Bird Ave ' 47'' ' 56'' ' 6'' 37 18' 17''

28 MAP LEGEND Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Units Soil Ratings <= 24 Not rated or not available Political Features Cities Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads MAP INFORMATION Map Scale: 1:130,000 if printed on A size (8.5" 11") sheet. The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for accurate map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: UTM Zone 10N NAD83 This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Santa Clara Area, California, Western Part Survey Area Data: Version 1, Jul 27, 2010 Date(s) aerial images were photographed: 6/12/2005; 6/13/2005 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

29 Table Percent Clay Percent Clay Summary by Map Unit Santa Clara Area, California, Western Part (CA641) Map unit symbol Map unit name Rating (percent) Acres in AOI Percent of AOI 101 Urban land, 0 to 2 percent slopes, basins % 123 Urban Land-Xerorthents, anthropogenic fill complex, 0 to 2 percent slopes 130 Urban land-still complex, 0 to 2 percent slopes 131 Urban land-elpaloalto complex, 0 to 2 percent slopes 135 Urban land-stevenscreek complex, 0 to 2 percent slopes 140 Urban land-flaskan complex, 0 to 2 percent slopes 144 Flaskan sandy clay loam, 0 to 2 percent slopes 145 Urbanland-Hangerone complex, 0 to 2 percent slopes, drained 160 Urbanland-Clear Lake complex, 0 to 2 percent slopes 165 Urbanland-Campbell complex, 0 to 2 percent slopes, protected 170 Urbanland-Landelspark complex, 0 to 2 percent slopes 175 Urbanland-Botella complex, 0 to 2 percent slopes 180 Urbanland-Newpark complex, 0 to 2 percent slopes 185 Urban Land - Bayshore complex, 0 to 2 percent slopes, drained 317 Urbanland-Cropley complex, 0 to 2 percent slopes % % % % % % % % % % % % % % Totals for Area of Interest 2, % Rating Options Percent Clay Units of Measure: percent Aggregation Method: Dominant Component Component Percent Cutoff: None Specified Tie-break Rule: Higher Interpret Nulls as Zero: No Layer Options: Surface Layer 41

30 Percent Sand Sand as a soil separate consists of mineral soil particles that are 0.05 millimeter to 2 millimeters in diameter. In the database, the estimated sand content of each soil layer is given as a percentage, by weight, of the soil material that is less than 2 millimeters in diameter. The content of sand, silt, and clay affects the physical behavior of a soil. Particle size is important for engineering and agronomic interpretations, for determination of soil hydrologic qualities, and for soil classification. For each soil layer, this attribute is actually recorded as three separate values in the database. A low value and a high value indicate the range of this attribute for the soil component. A "representative" value indicates the expected value of this attribute for the component. For this soil property, only the representative value is used. 42

31

32 MAP LEGEND Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Units Soil Ratings <= 58.2 Not rated or not available Political Features Cities Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads MAP INFORMATION Map Scale: 1:130,000 if printed on A size (8.5" 11") sheet. The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for accurate map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: UTM Zone 10N NAD83 This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Santa Clara Area, California, Western Part Survey Area Data: Version 1, Jul 27, 2010 Date(s) aerial images were photographed: 6/12/2005; 6/13/2005 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

33 Table Percent Sand Percent Sand Summary by Map Unit Santa Clara Area, California, Western Part (CA641) Map unit symbol Map unit name Rating (percent) Acres in AOI Percent of AOI 101 Urban land, 0 to 2 percent slopes, basins % 123 Urban Land-Xerorthents, anthropogenic fill complex, 0 to 2 percent slopes 130 Urban land-still complex, 0 to 2 percent slopes 131 Urban land-elpaloalto complex, 0 to 2 percent slopes 135 Urban land-stevenscreek complex, 0 to 2 percent slopes 140 Urban land-flaskan complex, 0 to 2 percent slopes 144 Flaskan sandy clay loam, 0 to 2 percent slopes 145 Urbanland-Hangerone complex, 0 to 2 percent slopes, drained 160 Urbanland-Clear Lake complex, 0 to 2 percent slopes 165 Urbanland-Campbell complex, 0 to 2 percent slopes, protected 170 Urbanland-Landelspark complex, 0 to 2 percent slopes 175 Urbanland-Botella complex, 0 to 2 percent slopes 180 Urbanland-Newpark complex, 0 to 2 percent slopes 185 Urban Land - Bayshore complex, 0 to 2 percent slopes, drained 317 Urbanland-Cropley complex, 0 to 2 percent slopes % % % % % % % % % % % % % % Totals for Area of Interest 2, % Rating Options Percent Sand Units of Measure: percent Aggregation Method: Dominant Component Component Percent Cutoff: None Specified Tie-break Rule: Higher Interpret Nulls as Zero: No Layer Options: Surface Layer 45

34 Soil Qualities and Features Soil qualities are behavior and performance attributes that are not directly measured, but are inferred from observations of dynamic conditions and from soil properties. Example soil qualities include natural drainage, and frost action. Soil features are attributes that are not directly part of the soil. Example soil features include slope and depth to restrictive layer. These features can greatly impact the use and management of the soil. Hydrologic Soil Group Hydrologic soil groups are based on estimates of runoff potential. Soils are assigned to one of four groups according to the rate of water infiltration when the soils are not protected by vegetation, are thoroughly wet, and receive precipitation from longduration storms. The soils in the United States are assigned to four groups (A, B, C, and D) and three dual classes (A/D, B/D, and C/D). The groups are defined as follows: Group A. Soils having a high infiltration rate (low runoff potential) when thoroughly wet. These consist mainly of deep, well drained to excessively drained sands or gravelly sands. These soils have a high rate of water transmission. Group B. Soils having a moderate infiltration rate when thoroughly wet. These consist chiefly of moderately deep or deep, moderately well drained or well drained soils that have moderately fine texture to moderately coarse texture. These soils have a moderate rate of water transmission. Group C. Soils having a slow infiltration rate when thoroughly wet. These consist chiefly of soils having a layer that impedes the downward movement of water or soils of moderately fine texture or fine texture. These soils have a slow rate of water transmission. Group D. Soils having a very slow infiltration rate (high runoff potential) when thoroughly wet. These consist chiefly of clays that have a high shrink-swell potential, soils that have a high water table, soils that have a claypan or clay layer at or near the surface, and soils that are shallow over nearly impervious material. These soils have a very slow rate of water transmission. If a soil is assigned to a dual hydrologic group (A/D, B/D, or C/D), the first letter is for drained areas and the second is for undrained areas. Only the soils that in their natural condition are in group D are assigned to dual classes. 46

35 S Mary Ave Lawrence Expy 37 28' 15'' 37 18' 26'' ' 24'' ' 17'' Oak Grove Ave Junipero Serra Blvd Woodland Ave Page Mill Rd University Ave Alma St Arastradero Rd Middlefield Rd Foothill Expy W Fremont Rd Purissima Rd Elena Rd East Palo Alto W Bayshore Rd Louis Rd Main St Burke Rd San Antonio Rd Los Altos W Middlefield Rd S El Monte Ave Charleston Rd Central Expy Foothill Expy Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. Miramonte Ave Central Expy Mountain View Grant Rd Foothill Blvd Bernardo Ave E Middlefield Rd S Bernardo Ave McClellan Rd Hollenbeck Ave N Mathilda Ave Sunnyvale Monta Vista Meters 0 1,500 3,000 6,000 9,000 Feet 0 5,000 10,000 20,000 30,000 Custom Soil Resource Report Map Hydrologic Soil Group N Stelling Rd S Mathilda Ave N Mathilda Ave E Caribbean Dr N Fair Oaks Ave E Arques Ave Kifer Rd E Homestead Rd Cupertino Bollinger Rd Tasman Dr Tasman Dr Monroe St Pomeroy Ave Scott Blvd Kiely Blvd Great America Pkwy San Tomas Expy Lafayette St Homestead Rd Pruneridge Ave Moorpark Ave Williams Rd San Tomas Expy N 1st St E Tasman Dr De la Cruz Blvd Cruz Blvd Market St N Bascom Ave Coleman Ave Park Ave Milpitas S Abel St E Trimble Rd E Brokaw Rd Skyport Dr State Hwy 82 Race St Jacklin Rd S Main St N 4th St Murphy Ave Oakland Rd N 10th St S 1st St Bird Ave ' 47'' ' 56'' ' 6'' 37 18' 17''

36 MAP LEGEND Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Units Soil Ratings A A/D B B/D C C/D D Not rated or not available Political Features Cities Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads MAP INFORMATION Map Scale: 1:130,000 if printed on A size (8.5" 11") sheet. The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for accurate map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: UTM Zone 10N NAD83 This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Santa Clara Area, California, Western Part Survey Area Data: Version 1, Jul 27, 2010 Date(s) aerial images were photographed: 6/12/2005; 6/13/2005 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

37 Table Hydrologic Soil Group Hydrologic Soil Group Summary by Map Unit Santa Clara Area, California, Western Part (CA641) Map unit symbol Map unit name Rating Acres in AOI Percent of AOI 101 Urban land, 0 to 2 percent slopes, basins D % 123 Urban Land-Xerorthents, anthropogenic fill complex, 0 to 2 percent slopes 130 Urban land-still complex, 0 to 2 percent slopes 131 Urban land-elpaloalto complex, 0 to 2 percent slopes 135 Urban land-stevenscreek complex, 0 to 2 percent slopes 140 Urban land-flaskan complex, 0 to 2 percent slopes 144 Flaskan sandy clay loam, 0 to 2 percent slopes 145 Urbanland-Hangerone complex, 0 to 2 percent slopes, drained 160 Urbanland-Clear Lake complex, 0 to 2 percent slopes 165 Urbanland-Campbell complex, 0 to 2 percent slopes, protected 170 Urbanland-Landelspark complex, 0 to 2 percent slopes 175 Urbanland-Botella complex, 0 to 2 percent slopes 180 Urbanland-Newpark complex, 0 to 2 percent slopes 185 Urban Land - Bayshore complex, 0 to 2 percent slopes, drained 317 Urbanland-Cropley complex, 0 to 2 percent slopes D % D % D % D % D % C % D % C % D % D % D % D % D % D % Totals for Area of Interest 2, % Rating Options Hydrologic Soil Group Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Water Features Water Features include ponding frequency, flooding frequency, and depth to water table. 49

38 Depth to Water Table "Water table" refers to a saturated zone in the soil. It occurs during specified months. Estimates of the upper limit are based mainly on observations of the water table at selected sites and on evidence of a saturated zone, namely grayish colors (redoximorphic features) in the soil. A saturated zone that lasts for less than a month is not considered a water table. This attribute is actually recorded as three separate values in the database. A low value and a high value indicate the range of this attribute for the soil component. A "representative" value indicates the expected value of this attribute for the component. For this soil property, only the representative value is used. 50

39 S Mary Ave Lawrence Expy 37 28' 15'' 37 18' 26'' ' 24'' ' 17'' Oak Grove Ave Junipero Serra Blvd Woodland Ave Page Mill Rd University Ave Alma St Arastradero Rd Middlefield Rd Foothill Expy W Fremont Rd Purissima Rd Elena Rd East Palo Alto W Bayshore Rd Louis Rd Main St Burke Rd San Antonio Rd Los Altos W Middlefield Rd S El Monte Ave Charleston Rd Central Expy Foothill Expy Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. Miramonte Ave Central Expy Mountain View Grant Rd Foothill Blvd Bernardo Ave E Middlefield Rd S Bernardo Ave McClellan Rd Hollenbeck Ave N Mathilda Ave Sunnyvale Monta Vista Meters 0 1,500 3,000 6,000 9,000 Feet 0 5,000 10,000 20,000 30,000 Custom Soil Resource Report Map Depth to Water Table N Stelling Rd S Mathilda Ave N Mathilda Ave E Caribbean Dr N Fair Oaks Ave E Arques Ave Kifer Rd E Homestead Rd Cupertino Bollinger Rd Tasman Dr Tasman Dr Monroe St Pomeroy Ave Scott Blvd Kiely Blvd Great America Pkwy San Tomas Expy Lafayette St Homestead Rd Pruneridge Ave Moorpark Ave Williams Rd San Tomas Expy N 1st St E Tasman Dr De la Cruz Blvd Cruz Blvd Market St N Bascom Ave Coleman Ave Park Ave Milpitas S Abel St E Trimble Rd E Brokaw Rd Skyport Dr State Hwy 82 Race St Jacklin Rd S Main St N 4th St Murphy Ave Oakland Rd N 10th St S 1st St Bird Ave ' 47'' ' 56'' ' 6'' 37 18' 17''

40 MAP LEGEND Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Units Soil Ratings > 200 Political Features Cities Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads MAP INFORMATION Map Scale: 1:130,000 if printed on A size (8.5" 11") sheet. The soil surveys that comprise your AOI were mapped at 1:24,000. Warning: Soil Map may not be valid at this scale. Enlargement of maps beyond the scale of mapping can cause misunderstanding of the detail of mapping and accuracy of soil line placement. The maps do not show the small areas of contrasting soils that could have been shown at a more detailed scale. Please rely on the bar scale on each map sheet for accurate map measurements. Source of Map: Natural Resources Conservation Service Web Soil Survey URL: Coordinate System: UTM Zone 10N NAD83 This product is generated from the USDA-NRCS certified data as of the version date(s) listed below. Soil Survey Area: Santa Clara Area, California, Western Part Survey Area Data: Version 1, Jul 27, 2010 Date(s) aerial images were photographed: 6/12/2005; 6/13/2005 The orthophoto or other base map on which the soil lines were compiled and digitized probably differs from the background imagery displayed on these maps. As a result, some minor shifting of map unit boundaries may be evident.

41 Table Depth to Water Table Depth to Water Table Summary by Map Unit Santa Clara Area, California, Western Part (CA641) Map unit symbol Map unit name Rating (centimeters) Acres in AOI Percent of AOI 101 Urban land, 0 to 2 percent slopes, basins 123 Urban Land-Xerorthents, anthropogenic fill complex, 0 to 2 percent slopes 130 Urban land-still complex, 0 to 2 percent slopes 131 Urban land-elpaloalto complex, 0 to 2 percent slopes 135 Urban land-stevenscreek complex, 0 to 2 percent slopes 140 Urban land-flaskan complex, 0 to 2 percent slopes 144 Flaskan sandy clay loam, 0 to 2 percent slopes 145 Urbanland-Hangerone complex, 0 to 2 percent slopes, drained 160 Urbanland-Clear Lake complex, 0 to 2 percent slopes 165 Urbanland-Campbell complex, 0 to 2 percent slopes, protected 170 Urbanland-Landelspark complex, 0 to 2 percent slopes 175 Urbanland-Botella complex, 0 to 2 percent slopes 180 Urbanland-Newpark complex, 0 to 2 percent slopes 185 Urban Land - Bayshore complex, 0 to 2 percent slopes, drained 317 Urbanland-Cropley complex, 0 to 2 percent slopes > % > % > % > % > % > % > % > % > % > % > % > % > % > % > % Totals for Area of Interest 2, % 53

42 Rating Options Depth to Water Table Units of Measure: centimeters Aggregation Method: Dominant Component Component Percent Cutoff: None Specified Tie-break Rule: Lower Interpret Nulls as Zero: No Beginning Month: January Ending Month: December 54

43 References American Association of State Highway and Transportation Officials (AASHTO) Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM) Standard classification of soils for engineering purposes. ASTM Standard D Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe Classification of wetlands and deep-water habitats of the United States. U.S. Fish and Wildlife Service FWS/OBS-79/31. Federal Register. July 13, Changes in hydric soils of the United States. Federal Register. September 18, Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, Field indicators of hydric soils in the United States. National Research Council Wetlands: Characteristics and boundaries. Soil Survey Division Staff Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook Soil Survey Staff Soil taxonomy: A basic system of soil classification for making and interpreting soil surveys. 2nd edition. Natural Resources Conservation Service, U.S. Department of Agriculture Handbook Soil Survey Staff Keys to soil taxonomy. 10th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. Tiner, R.W., Jr Wetlands of Delaware. U.S. Fish and Wildlife Service and Delaware Department of Natural Resources and Environmental Control, Wetlands Section. United States Army Corps of Engineers, Environmental Laboratory Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. United States Department of Agriculture, Natural Resources Conservation Service Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook

44 United States Department of Agriculture, Soil Conservation Service Land capability classification. U.S. Department of Agriculture Handbook

45 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California Appendix C Water Quality Objectives (From the San Francisco Bay, Region 2, Basin Plan, 2013) March 2014 C-1

46 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-2

47 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-3

48 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-4

49 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-5

50 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-6

51 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-7

52 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-8

53 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-9

54 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 C-10

55 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California Appendix D Description of Beneficial Uses (From the San Francisco Bay, Region 2, Basin Plan, 2013) March 2014 D-1

56 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 D-2

57 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 D-3

58 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 D-4

59 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 D-5

60 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 D-6

61 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 D-7

62 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 D-8

63 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California Appendix E Risk level Determination (From the Caltrans Stormwater Design Application) March 2014 E-1

64 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 E-2

65 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 E-3

66 Water Quality Assessment Report 04-SCL-82 El Camino Real Bus Rapid Transit Project EA 04-3G980 San José, Santa Clara, Sunnyvale, Mountain View, Los Altos, and Palo Alto Santa Clara County, California March 2014 E-4