Soil Resource Report within Project Limits

Preliminary Geotechnical Report El Camino Real Bus Rapid Transit Project Santa Clara County, California 04-SCL-82 Appendix A.3 Soil Resource Report within Project Limits November 2013 A-4

United States Department of Agriculture Natural Resources Conservation Service A product of the National Cooperative Soil Survey, a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local participants Custom Soil Resource Report for Santa Clara Area, California, Western Part June 6, 2013

Preface Soil surveys contain information that affects land use planning in survey areas. They highlight soil limitations that affect various land uses and provide information about the properties of the soils in the survey areas. Soil surveys are designed for many different users, including farmers, ranchers, foresters, agronomists, urban planners, community officials, engineers, developers, builders, and home buyers. Also, conservationists, teachers, students, and specialists in recreation, waste disposal, and pollution control can use the surveys to help them understand, protect, or enhance the environment. Various land use regulations of Federal, State, and local governments may impose special restrictions on land use or land treatment. Soil surveys identify soil properties that are used in making various land use or land treatment decisions. The information is intended to help the land users identify and reduce the effects of soil limitations on various land uses. The landowner or user is responsible for identifying and complying with existing laws and regulations. Although soil survey information can be used for general farm, local, and wider area planning, onsite investigation is needed to supplement this information in some cases. Examples include soil quality assessments (http://soils.usda.gov/sqi/) and certain conservation and engineering applications. For more detailed information, contact your local USDA Service Center (http://offices.sc.egov.usda.gov/locator/app? agency=nrcs) or your NRCS State Soil Scientist (http://soils.usda.gov/contact/ state_offices/). Great differences in soil properties can occur within short distances. Some soils are seasonally wet or subject to flooding. Some are too unstable to be used as a foundation for buildings or roads. Clayey or wet soils are poorly suited to use as septic tank absorption fields. A high water table makes a soil poorly suited to basements or underground installations. The National Cooperative Soil Survey is a joint effort of the United States Department of Agriculture and other Federal agencies, State agencies including the Agricultural Experiment Stations, and local agencies. The Natural Resources Conservation Service (NRCS) has leadership for the Federal part of the National Cooperative Soil Survey. Information about soils is updated periodically. Updated information is available through the NRCS Soil Data Mart Web site or the NRCS Web Soil Survey. The Soil Data Mart is the data storage site for the official soil survey information. The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, age, disability, and where applicable, sex, marital status, familial status, parental status, religion, sexual orientation, genetic information, political beliefs, reprisal, or because all or a part of an individual's income is derived from any public assistance program. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means 2

for communication of program information (Braille, large print, audiotape, etc.) should contact USDA's TARGET Center at (202) 720-2600 (voice and TDD). To file a complaint of discrimination, write to USDA, Director, Office of Civil Rights, 1400 Independence Avenue, S.W., Washington, D.C. 20250-9410 or call (800) 795-3272 (voice) or (202) 720-6382 (TDD). USDA is an equal opportunity provider and employer. 3

Contents Preface...2 How Soil Surveys Are Made...5 Soil Map...7 Soil Map...8 Legend...9 Map Unit Legend...10 Map Unit Descriptions...10 Santa Clara Area, California, Western Part...13 101 Urban land, 0 to 2 percent slopes, basins...13 123 Urban Land-Xerorthents, anthropogenic fill complex, 0 to 2 percent slopes...13 130 Urban land-still complex, 0 to 2 percent slopes...14 131 Urban land-elpaloalto complex, 0 to 2 percent slopes...16 135 Urban land-stevenscreek complex, 0 to 2 percent slopes...17 140 Urban land-flaskan complex, 0 to 2 percent slopes...19 144 Flaskan sandy clay loam, 0 to 2 percent slopes...20 145 Urbanland-Hangerone complex, 0 to 2 percent slopes, drained...22 160 Urbanland-Clear Lake complex, 0 to 2 percent slopes...23 165 Urbanland-Campbell complex, 0 to 2 percent slopes, protected...25 170 Urbanland-Landelspark complex, 0 to 2 percent slopes...26 175 Urbanland-Botella complex, 0 to 2 percent slopes...28 180 Urbanland-Newpark complex, 0 to 2 percent slopes...29 185 Urban Land - Bayshore complex, 0 to 2 percent slopes, drained...31 317 Urbanland-Cropley complex, 0 to 2 percent slopes...32 Soil Information for All Uses...34 Soil Properties and Qualities...34 Soil Erosion Factors...34 K Factor, Rock Free...34 Soil Physical Properties...38 Percent Clay...38 Percent Sand...42 Soil Qualities and Features...46 Hydrologic Soil Group...46 Water Features...49 Depth to Water Table...50 References...55 4

How Soil Surveys Are Made Soil surveys are made to provide information about the soils and miscellaneous areas in a specific area. They include a description of the soils and miscellaneous areas and their location on the landscape and tables that show soil properties and limitations affecting various uses. Soil scientists observed the steepness, length, and shape of the slopes; the general pattern of drainage; the kinds of crops and native plants; and the kinds of bedrock. They observed and described many soil profiles. A soil profile is the sequence of natural layers, or horizons, in a soil. The profile extends from the surface down into the unconsolidated material in which the soil formed or from the surface down to bedrock. The unconsolidated material is devoid of roots and other living organisms and has not been changed by other biological activity. Currently, soils are mapped according to the boundaries of major land resource areas (MLRAs). MLRAs are geographically associated land resource units that share common characteristics related to physiography, geology, climate, water resources, soils, biological resources, and land uses (USDA, 2006). Soil survey areas typically consist of parts of one or more MLRA. The soils and miscellaneous areas in a survey area occur in an orderly pattern that is related to the geology, landforms, relief, climate, and natural vegetation of the area. Each kind of soil and miscellaneous area is associated with a particular kind of landform or with a segment of the landform. By observing the soils and miscellaneous areas in the survey area and relating their position to specific segments of the landform, a soil scientist develops a concept, or model, of how they were formed. Thus, during mapping, this model enables the soil scientist to predict with a considerable degree of accuracy the kind of soil or miscellaneous area at a specific location on the landscape. Commonly, individual soils on the landscape merge into one another as their characteristics gradually change. To construct an accurate soil map, however, soil scientists must determine the boundaries between the soils. They can observe only a limited number of soil profiles. Nevertheless, these observations, supplemented by an understanding of the soil-vegetation-landscape relationship, are sufficient to verify predictions of the kinds of soil in an area and to determine the boundaries. Soil scientists recorded the characteristics of the soil profiles that they studied. They noted soil color, texture, size and shape of soil aggregates, kind and amount of rock fragments, distribution of plant roots, reaction, and other features that enable them to identify soils. After describing the soils in the survey area and determining their properties, the soil scientists assigned the soils to taxonomic classes (units). Taxonomic classes are concepts. Each taxonomic class has a set of soil characteristics with precisely defined limits. The classes are used as a basis for comparison to classify soils systematically. Soil taxonomy, the system of taxonomic classification used in the United States, is based mainly on the kind and character of soil properties and the arrangement of horizons within the profile. After the soil scientists classified and named the soils in the survey area, they compared the 5

individual soils with similar soils in the same taxonomic class in other areas so that they could confirm data and assemble additional data based on experience and research. The objective of soil mapping is not to delineate pure map unit components; the objective is to separate the landscape into landforms or landform segments that have similar use and management requirements. Each map unit is defined by a unique combination of soil components and/or miscellaneous areas in predictable proportions. Some components may be highly contrasting to the other components of the map unit. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The delineation of such landforms and landform segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, onsite investigation is needed to define and locate the soils and miscellaneous areas. Soil scientists make many field observations in the process of producing a soil map. The frequency of observation is dependent upon several factors, including scale of mapping, intensity of mapping, design of map units, complexity of the landscape, and experience of the soil scientist. Observations are made to test and refine the soillandscape model and predictions and to verify the classification of the soils at specific locations. Once the soil-landscape model is refined, a significantly smaller number of measurements of individual soil properties are made and recorded. These measurements may include field measurements, such as those for color, depth to bedrock, and texture, and laboratory measurements, such as those for content of sand, silt, clay, salt, and other components. Properties of each soil typically vary from one point to another across the landscape. Observations for map unit components are aggregated to develop ranges of characteristics for the components. The aggregated values are presented. Direct measurements do not exist for every property presented for every map unit component. Values for some properties are estimated from combinations of other properties. While a soil survey is in progress, samples of some of the soils in the area generally are collected for laboratory analyses and for engineering tests. Soil scientists interpret the data from these analyses and tests as well as the field-observed characteristics and the soil properties to determine the expected behavior of the soils under different uses. Interpretations for all of the soils are field tested through observation of the soils in different uses and under different levels of management. Some interpretations are modified to fit local conditions, and some new interpretations are developed to meet local needs. Data are assembled from other sources, such as research information, production records, and field experience of specialists. For example, data on crop yields under defined levels of management are assembled from farm records and from field or plot experiments on the same kinds of soil. Predictions about soil behavior are based not only on soil properties but also on such variables as climate and biological activity. Soil conditions are predictable over long periods of time, but they are not predictable from year to year. For example, soil scientists can predict with a fairly high degree of accuracy that a given soil will have a high water table within certain depths in most years, but they cannot predict that a high water table will always be at a specific level in the soil on a specific date. After soil scientists located and identified the significant natural bodies of soil in the survey area, they drew the boundaries of these bodies on aerial photographs and identified each as a specific map unit. Aerial photographs show trees, buildings, fields, roads, and rivers, all of which help in locating boundaries accurately. 6

Soil Map The soil map section includes the soil map for the defined area of interest, a list of soil map units on the map and extent of each map unit, and cartographic symbols displayed on the map. Also presented are various metadata about data used to produce the map, and a description of each soil map unit. 7

573000 576000 37 28' 15'' 579000 582000 585000 121 52' 47'' 122 11' 17'' Custom Soil Resource Report Soil Map 588000 591000 594000 597000 37 28' 6'' e ve 4143000 4140000 Rd e 4134000 St e Bird Av Race St 4131000 Expy Sa n To mas 4137000 Tr im bl E Great Ame rica Pkwy Lawrence Expy Expy Kiely Blvd Sa n To mas e N Fair Oaks Ave N Math o Ave ilda Av ilda Av e Gra nt Rd S Be rna rd Hollenbeck Ave Pomeroy Ave 82 st S1 y N Stelling Rd w Bern ardo Ave H Foothill Blvd S Mary Ave to n io An Sa n Bu M ai rk n e R d St S El M on te Av e ill Rd Pa ge M d e St th 10 St 4t h N 4134000 Dr Av e Av 4131000 ve dr Oak lan A hy rp u M N t Av e 591000 et S rk Ma m as co 588000 Co le m an rk Pa Williams Rd t po r Sk y NB Bollinger Rd o Br Rd e at St y xp Moorpark Ave in St t el S ll E ea d est m o H E w ka Rd Pruneridge Ave Cupertino S Ab d B lv St d Mo nro e E Homestea d Rd r St d Scott Blvd Cru z Blv hi ot Fo McCle lla n Rd Kif er R ruz Rd Monta Vista S Ma thilda Ave a Rd Sunnyvale E Arqu es Ave D an la C Rd Mountain View Tasman Dr E t ld Los Altos Tasman Dr m Tas De fie sim na dle d nt R ris Pu El e Ce n tr al E Ce xp y n tr al E xp y id M o rem Rd d Dr es ett py dr ibb ea n t 1s Ex E Car E vd Fo oth ill Mi dd le f ie l Milpitas n Rd N Bl W rle s to N Math Cha d f ay La Se rra Aras tra de ro 4137000 sr Rd Lo ui S Ma St Rd Miramonte Ave Un ive d Rd 4143000 fie l WF 4140000 dle re ho a M id d ys Ba Al m Ju n ip er o Jack lin R 4146000 Av rs ity A d lan od o W W Oa kg rov 4146000 ea ve East Palo Alto 37 18' 26'' 37 18' 17'' ± 576000 579000 582000 585000 Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. 0 1,500 3,000 6,000 0 5,000 10,000 20,000 Meters 9,000 Feet 30,000 594000 597000 121 52' 56'' 122 11' 24'' 573000

MAP LEGEND MAP INFORMATION Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Units Special Point Features Blowout Borrow Pit Clay Spot Closed Depression Gravel Pit Gravelly Spot Landfill Lava Flow Marsh or swamp Mine or Quarry Miscellaneous Water Perennial Water Rock Outcrop Saline Spot Sandy Spot Severely Eroded Spot Sinkhole Slide or Slip Sodic Spot Spoil Area Stony Spot Very Stony Spot Wet Spot Other Special Line Features Gully Short Steep Slope Other Political Features Cities Water Features Streams and Canals Transportation Rails Interstate Highways US Routes Major Roads 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. 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: http://websoilsurvey.nrcs.usda.gov 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.

Map Unit Legend Santa Clara Area, California, Western Part (CA641) Map Unit Symbol Map Unit Name Acres in AOI Percent of AOI 101 Urban land, 0 to 2 percent slopes, basins 15.4 0.7% 123 Urban Land-Xerorthents, anthropogenic fill complex, 0 to 2 percent slopes 2.5 0.1% 130 Urban land-still complex, 0 to 2 percent slopes 22.7 1.1% 131 Urban land-elpaloalto complex, 0 to 2 percent slopes 423.0 20.0% 135 Urban land-stevenscreek complex, 0 to 2 percent slopes 127.2 6.0% 140 Urban land-flaskan complex, 0 to 2 percent slopes 631.8 29.9% 144 Flaskan sandy clay loam, 0 to 2 percent slopes 71.6 3.4% 145 Urbanland-Hangerone complex, 0 to 2 percent slopes, drained 144.3 6.8% 160 Urbanland-Clear Lake complex, 0 to 2 percent slopes 126.2 6.0% 165 Urbanland-Campbell complex, 0 to 2 percent slopes, protected 170 Urbanland-Landelspark complex, 0 to 2 percent slopes 237.6 11.2% 19.0 0.9% 175 Urbanland-Botella complex, 0 to 2 percent slopes 57.8 2.7% 180 Urbanland-Newpark complex, 0 to 2 percent slopes 102.4 4.8% 185 Urban Land - Bayshore complex, 0 to 2 percent slopes, drained 80.0 3.8% 317 Urbanland-Cropley complex, 0 to 2 percent slopes 54.2 2.6% Totals for Area of Interest 2,115.7 100.0% Map Unit Descriptions The map units delineated on the detailed soil maps in a soil survey represent the soils or miscellaneous areas in the survey area. The map unit descriptions, along with the maps, can be used to determine the composition and properties of a unit. A map unit delineation on a soil map represents an area dominated by one or more major kinds of soil or miscellaneous areas. A map unit is identified and named according to the taxonomic classification of the dominant soils. Within a taxonomic class there are precisely defined limits for the properties of the soils. On the landscape, however, the soils are natural phenomena, and they have the characteristic variability of all natural phenomena. Thus, the range of some observed properties may extend beyond the limits defined for a taxonomic class. Areas of soils of a single taxonomic class rarely, if ever, can be mapped without including areas of other taxonomic classes. Consequently, every map unit is made up of the soils or miscellaneous areas for which it is named and some minor components that belong to taxonomic classes other than those of the major soils. 10

Most minor soils have properties similar to those of the dominant soil or soils in the map unit, and thus they do not affect use and management. These are called noncontrasting, or similar, components. They may or may not be mentioned in a particular map unit description. Other minor components, however, have properties and behavioral characteristics divergent enough to affect use or to require different management. These are called contrasting, or dissimilar, components. They generally are in small areas and could not be mapped separately because of the scale used. Some small areas of strongly contrasting soils or miscellaneous areas are identified by a special symbol on the maps. If included in the database for a given area, the contrasting minor components are identified in the map unit descriptions along with some characteristics of each. A few areas of minor components may not have been observed, and consequently they are not mentioned in the descriptions, especially where the pattern was so complex that it was impractical to make enough observations to identify all the soils and miscellaneous areas on the landscape. The presence of minor components in a map unit in no way diminishes the usefulness or accuracy of the data. The objective of mapping is not to delineate pure taxonomic classes but rather to separate the landscape into landforms or landform segments that have similar use and management requirements. The delineation of such segments on the map provides sufficient information for the development of resource plans. If intensive use of small areas is planned, however, onsite investigation is needed to define and locate the soils and miscellaneous areas. An identifying symbol precedes the map unit name in the map unit descriptions. Each description includes general facts about the unit and gives important soil properties and qualities. Soils that have profiles that are almost alike make up a soil series. Except for differences in texture of the surface layer, all the soils of a series have major horizons that are similar in composition, thickness, and arrangement. Soils of one series can differ in texture of the surface layer, slope, stoniness, salinity, degree of erosion, and other characteristics that affect their use. On the basis of such differences, a soil series is divided into soil phases. Most of the areas shown on the detailed soil maps are phases of soil series. The name of a soil phase commonly indicates a feature that affects use or management. For example, Alpha silt loam, 0 to 2 percent slopes, is a phase of the Alpha series. Some map units are made up of two or more major soils or miscellaneous areas. These map units are complexes, associations, or undifferentiated groups. A complex consists of two or more soils or miscellaneous areas in such an intricate pattern or in such small areas that they cannot be shown separately on the maps. The pattern and proportion of the soils or miscellaneous areas are somewhat similar in all areas. Alpha-Beta complex, 0 to 6 percent slopes, is an example. An association is made up of two or more geographically associated soils or miscellaneous areas that are shown as one unit on the maps. Because of present or anticipated uses of the map units in the survey area, it was not considered practical or necessary to map the soils or miscellaneous areas separately. The pattern and relative proportion of the soils or miscellaneous areas are somewhat similar. Alpha- Beta association, 0 to 2 percent slopes, is an example. An undifferentiated group is made up of two or more soils or miscellaneous areas that could be mapped individually but are mapped as one unit because similar interpretations can be made for use and management. The pattern and proportion of the soils or miscellaneous areas in a mapped area are not uniform. An area can be 11

made up of only one of the major soils or miscellaneous areas, or it can be made up of all of them. Alpha and Beta soils, 0 to 2 percent slopes, is an example. Some surveys include miscellaneous areas. Such areas have little or no soil material and support little or no vegetation. Rock outcrop is an example. 12

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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 0.69. 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

S Mary Ave Lawrence Expy 37 28' 15'' 37 18' 26'' 4131000 4134000 4137000 4140000 4143000 4146000 122 11' 24'' 122 11' 17'' 573000 Oak Grove Ave Junipero Serra Blvd 573000 Woodland Ave Page Mill Rd University Ave Alma St Arastradero Rd 576000 Middlefield Rd Foothill Expy W Fremont Rd Purissima Rd Elena Rd 576000 East Palo Alto W Bayshore Rd Louis Rd Main St Burke Rd 579000 San Antonio Rd Los Altos W Middlefield Rd S El Monte Ave 579000 Charleston Rd Central Expy Foothill Expy Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. Miramonte Ave 582000 Central Expy Mountain View Grant Rd Foothill Blvd 582000 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 585000 N Stelling Rd 585000 S Mathilda Ave N Mathilda Ave E Caribbean Dr N Fair Oaks Ave E Arques Ave Kifer Rd E Homestead Rd Cupertino 588000 Bollinger Rd 588000 Tasman Dr Tasman Dr Monroe St Pomeroy Ave Scott Blvd Kiely Blvd 591000 Great America Pkwy San Tomas Expy Lafayette St Homestead Rd Pruneridge Ave Moorpark Ave Williams Rd 591000 San Tomas Expy N 1st St E Tasman Dr De la Cruz Blvd Cruz Blvd 594000 Market St N Bascom Ave Coleman Ave 594000 Park Ave Milpitas S Abel St E Trimble Rd E Brokaw Rd Skyport Dr State Hwy 82 Race St 597000 Jacklin Rd S Main St N 4th St 597000 Murphy Ave Oakland Rd N 10th St S 1st St Bird Ave 121 52' 47'' 121 52' 56'' 4146000 4143000 4140000 4137000 4134000 4131000 37 28' 6'' 37 18' 17''

Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Units Soil Ratings.02.05.10.15.17.20.24.28.32.37.43.49.55.64 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: http://websoilsurvey.nrcs.usda.gov 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.

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 15.4 0.7% 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 2.5 0.1% 22.7 1.1% 423.0 20.0% 127.2 6.0% 631.8 29.9%.24 71.6 3.4% 144.3 6.8% 126.2 6.0% 237.6 11.2% 19.0 0.9% 57.8 2.7% 102.4 4.8% 80.0 3.8% 54.2 2.6% Totals for Area of Interest 2,115.7 100.0% Rating Options K Factor, Rock Free Aggregation Method: Dominant Condition Component Percent Cutoff: None Specified Tie-break Rule: Higher Layer Options: Surface Layer 37

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 0.002 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

S Mary Ave Lawrence Expy 37 28' 15'' 37 18' 26'' 4131000 4134000 4137000 4140000 4143000 4146000 122 11' 24'' 122 11' 17'' 573000 Oak Grove Ave Junipero Serra Blvd 573000 Woodland Ave Page Mill Rd University Ave Alma St Arastradero Rd 576000 Middlefield Rd Foothill Expy W Fremont Rd Purissima Rd Elena Rd 576000 East Palo Alto W Bayshore Rd Louis Rd Main St Burke Rd 579000 San Antonio Rd Los Altos W Middlefield Rd S El Monte Ave 579000 Charleston Rd Central Expy Foothill Expy Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. Miramonte Ave 582000 Central Expy Mountain View Grant Rd Foothill Blvd 582000 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 585000 N Stelling Rd 585000 S Mathilda Ave N Mathilda Ave E Caribbean Dr N Fair Oaks Ave E Arques Ave Kifer Rd E Homestead Rd Cupertino 588000 Bollinger Rd 588000 Tasman Dr Tasman Dr Monroe St Pomeroy Ave Scott Blvd Kiely Blvd 591000 Great America Pkwy San Tomas Expy Lafayette St Homestead Rd Pruneridge Ave Moorpark Ave Williams Rd 591000 San Tomas Expy N 1st St E Tasman Dr De la Cruz Blvd Cruz Blvd 594000 Market St N Bascom Ave Coleman Ave 594000 Park Ave Milpitas S Abel St E Trimble Rd E Brokaw Rd Skyport Dr State Hwy 82 Race St 597000 Jacklin Rd S Main St N 4th St 597000 Murphy Ave Oakland Rd N 10th St S 1st St Bird Ave 121 52' 47'' 121 52' 56'' 4146000 4143000 4140000 4137000 4134000 4131000 37 28' 6'' 37 18' 17''

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: http://websoilsurvey.nrcs.usda.gov 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.

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 15.4 0.7% 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 2.5 0.1% 22.7 1.1% 423.0 20.0% 127.2 6.0% 631.8 29.9% 24.0 71.6 3.4% 144.3 6.8% 126.2 6.0% 237.6 11.2% 19.0 0.9% 57.8 2.7% 102.4 4.8% 80.0 3.8% 54.2 2.6% Totals for Area of Interest 2,115.7 100.0% 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

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

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: http://websoilsurvey.nrcs.usda.gov 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.

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 15.4 0.7% 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 2.5 0.1% 22.7 1.1% 423.0 20.0% 127.2 6.0% 631.8 29.9% 58.2 71.6 3.4% 144.3 6.8% 126.2 6.0% 237.6 11.2% 19.0 0.9% 57.8 2.7% 102.4 4.8% 80.0 3.8% 54.2 2.6% Totals for Area of Interest 2,115.7 100.0% 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

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

S Mary Ave Lawrence Expy 37 28' 15'' 37 18' 26'' 4131000 4134000 4137000 4140000 4143000 4146000 122 11' 24'' 122 11' 17'' 573000 Oak Grove Ave Junipero Serra Blvd 573000 Woodland Ave Page Mill Rd University Ave Alma St Arastradero Rd 576000 Middlefield Rd Foothill Expy W Fremont Rd Purissima Rd Elena Rd 576000 East Palo Alto W Bayshore Rd Louis Rd Main St Burke Rd 579000 San Antonio Rd Los Altos W Middlefield Rd S El Monte Ave 579000 Charleston Rd Central Expy Foothill Expy Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. Miramonte Ave 582000 Central Expy Mountain View Grant Rd Foothill Blvd 582000 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 585000 N Stelling Rd 585000 S Mathilda Ave N Mathilda Ave E Caribbean Dr N Fair Oaks Ave E Arques Ave Kifer Rd E Homestead Rd Cupertino 588000 Bollinger Rd 588000 Tasman Dr Tasman Dr Monroe St Pomeroy Ave Scott Blvd Kiely Blvd 591000 Great America Pkwy San Tomas Expy Lafayette St Homestead Rd Pruneridge Ave Moorpark Ave Williams Rd 591000 San Tomas Expy N 1st St E Tasman Dr De la Cruz Blvd Cruz Blvd 594000 Market St N Bascom Ave Coleman Ave 594000 Park Ave Milpitas S Abel St E Trimble Rd E Brokaw Rd Skyport Dr State Hwy 82 Race St 597000 Jacklin Rd S Main St N 4th St 597000 Murphy Ave Oakland Rd N 10th St S 1st St Bird Ave 121 52' 47'' 121 52' 56'' 4146000 4143000 4140000 4137000 4134000 4131000 37 28' 6'' 37 18' 17''

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: http://websoilsurvey.nrcs.usda.gov 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.

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 15.4 0.7% 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 2.5 0.1% D 22.7 1.1% D 423.0 20.0% D 127.2 6.0% D 631.8 29.9% C 71.6 3.4% D 144.3 6.8% C 126.2 6.0% D 237.6 11.2% D 19.0 0.9% D 57.8 2.7% D 102.4 4.8% D 80.0 3.8% D 54.2 2.6% Totals for Area of Interest 2,115.7 100.0% 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

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

S Mary Ave Lawrence Expy 37 28' 15'' 37 18' 26'' 4131000 4134000 4137000 4140000 4143000 4146000 122 11' 24'' 122 11' 17'' 573000 Oak Grove Ave Junipero Serra Blvd 573000 Woodland Ave Page Mill Rd University Ave Alma St Arastradero Rd 576000 Middlefield Rd Foothill Expy W Fremont Rd Purissima Rd Elena Rd 576000 East Palo Alto W Bayshore Rd Louis Rd Main St Burke Rd 579000 San Antonio Rd Los Altos W Middlefield Rd S El Monte Ave 579000 Charleston Rd Central Expy Foothill Expy Map Scale: 1:130,000 if printed on A size (8.5" x 11") sheet. Miramonte Ave 582000 Central Expy Mountain View Grant Rd Foothill Blvd 582000 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 585000 N Stelling Rd 585000 S Mathilda Ave N Mathilda Ave E Caribbean Dr N Fair Oaks Ave E Arques Ave Kifer Rd E Homestead Rd Cupertino 588000 Bollinger Rd 588000 Tasman Dr Tasman Dr Monroe St Pomeroy Ave Scott Blvd Kiely Blvd 591000 Great America Pkwy San Tomas Expy Lafayette St Homestead Rd Pruneridge Ave Moorpark Ave Williams Rd 591000 San Tomas Expy N 1st St E Tasman Dr De la Cruz Blvd Cruz Blvd 594000 Market St N Bascom Ave Coleman Ave 594000 Park Ave Milpitas S Abel St E Trimble Rd E Brokaw Rd Skyport Dr State Hwy 82 Race St 597000 Jacklin Rd S Main St N 4th St 597000 Murphy Ave Oakland Rd N 10th St S 1st St Bird Ave 121 52' 47'' 121 52' 56'' 4146000 4143000 4140000 4137000 4134000 4131000 37 28' 6'' 37 18' 17''

MAP LEGEND Area of Interest (AOI) Area of Interest (AOI) Soils Soil Map Units Soil Ratings 0-25 25-50 50-100 100-150 150-200 > 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: http://websoilsurvey.nrcs.usda.gov 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.

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 >200 15.4 0.7% >200 2.5 0.1% >200 22.7 1.1% >200 423.0 20.0% >200 127.2 6.0% >200 631.8 29.9% >200 71.6 3.4% >200 144.3 6.8% >200 126.2 6.0% >200 237.6 11.2% >200 19.0 0.9% >200 57.8 2.7% >200 102.4 4.8% >200 80.0 3.8% >200 54.2 2.6% Totals for Area of Interest 2,115.7 100.0% 53

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

References American Association of State Highway and Transportation Officials (AASHTO). 2004. Standard specifications for transportation materials and methods of sampling and testing. 24th edition. American Society for Testing and Materials (ASTM). 2005. Standard classification of soils for engineering purposes. ASTM Standard D2487-00. Cowardin, L.M., V. Carter, F.C. Golet, and E.T. LaRoe. 1979. 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, 1994. Changes in hydric soils of the United States. Federal Register. September 18, 2002. Hydric soils of the United States. Hurt, G.W., and L.M. Vasilas, editors. Version 6.0, 2006. Field indicators of hydric soils in the United States. National Research Council. 1995. Wetlands: Characteristics and boundaries. Soil Survey Division Staff. 1993. Soil survey manual. Soil Conservation Service. U.S. Department of Agriculture Handbook 18. http://soils.usda.gov/ Soil Survey Staff. 1999. 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 436. http://soils.usda.gov/ Soil Survey Staff. 2006. Keys to soil taxonomy. 10th edition. U.S. Department of Agriculture, Natural Resources Conservation Service. http://soils.usda.gov/ Tiner, R.W., Jr. 1985. 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. 1987. Corps of Engineers wetlands delineation manual. Waterways Experiment Station Technical Report Y-87-1. United States Department of Agriculture, Natural Resources Conservation Service. National forestry manual. http://soils.usda.gov/ United States Department of Agriculture, Natural Resources Conservation Service. National range and pasture handbook. http://www.glti.nrcs.usda.gov/ United States Department of Agriculture, Natural Resources Conservation Service. National soil survey handbook, title 430-VI. http://soils.usda.gov/ United States Department of Agriculture, Natural Resources Conservation Service. 2006. Land resource regions and major land resource areas of the United States, the Caribbean, and the Pacific Basin. U.S. Department of Agriculture Handbook 296. http://soils.usda.gov/ 55

United States Department of Agriculture, Soil Conservation Service. 1961. Land capability classification. U.S. Department of Agriculture Handbook 210. 56

Preliminary Geotechnical Report El Camino Real Bus Rapid Transit Project Santa Clara County, California 04-SCL-82 Appendix B Peak Acceleration Summary November 2013 B-1

5/31/13 ARS Online Caltrans ARS Online (v2.2.06) This web-based tool calculates both deterministic and probabilistic acceleration response spectra for any location in California based on criteria provided in Appendix B of Caltrans Seismic Design Criteria. More... SELECT SITE LOCATION Map data 2013 Google - Latitude: 37.33193205 Longitude: -121.90030575 VS30: 270 m/s Calculate CALCULATED SPECTRA Display Curves: 3 Printer Friendly View dap3.dot.ca.gov/ars_online/index.php 1/2

5/31/13 ARS Online Tabular Data Envelope Only Hide Near Fault Axis Scale Show Basin Apply Near Fault Adjustment To: NOTE: Caltrans SDC requires application of a Near Fault Adjustment factor for sites less than 25 km (Rrup) from the causative fault. Deterministic Spectrum Using 2.50 Km Silver Creek 6.39 Km Cascade fault 18.20 Km San Andreas (Santa Cruz Mts) 2011 CFM Probabilistic Spectrum Using 2.50 Km (Recommend Performing Deaggregation To Verify) OK Show Spectrum with Adjustment Only Show Spectrum with and without near fault Adjustment Conditions of Use Privacy Policy Copyright 2009 State of California dap3.dot.ca.gov/ars_online/index.php 2/2

5/31/13 Printer Friendly View SITE DATA (ARS Online Version 2.2.06) Shear Wave Velocity, VS30: 270 m/s Latitude: 37.331932 Longitude: -121.900306 Depth to Vs = 1.0 km/s: N/A Depth to Vs = 2.5 km/s: N/A DETERMINISTIC Silver Creek Fault ID: 148 Maximum Magnitude (MMax): 6.9 Fault Type: R Fault Dip: 75 Deg Dip Direction: E Bottom of Rupture Plane: 11.10 km Top of Rupture Plane(Ztor): 0.00 km Rrup 2.50 km Rjb: 2.50 km Rx: 2.50 km Fnorm: 0 Frev: 1 Period SA(Base Spectrum) Basin Factor Near Fault Factor(Applied) SA(Final Spectrum) 0.01 0.466 1.000 1.000 0.466 0.05 0.543 1.000 1.000 0.543 0.1 0.676 1.000 1.000 0.676 0.15 0.783 1.000 1.000 0.783 0.2 0.862 1.000 1.000 0.862 0.25 0.902 1.000 1.000 0.902 0.3 0.919 1.000 1.000 0.919 0.4 0.924 1.000 1.000 0.924 0.5 0.903 1.000 1.000 0.903 0.6 0.844 1.000 1.040 0.877 0.7 0.793 1.000 1.080 0.856 0.85 0.714 1.000 1.140 0.814 1 0.642 1.000 1.200 0.770 1.2 0.554 1.000 1.200 0.665 1.5 0.451 1.000 1.200 0.541 2 0.330 1.000 1.200 0.396 3 0.202 1.000 1.200 0.242 dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-168.0506712152506&y=-74.23624229467919&lat=37.33193205&long=121.90030575&sv=270&mstatus=&top 1/5

5/31/13 Printer Friendly View 3 0.202 1.000 1.200 0.242 4 0.140 1.000 1.200 0.168 5 0.106 1.000 1.200 0.127 Cascade fault Fault ID: 153 Maximum Magnitude (MMax): 6.7 Fault Type: Rev Fault Dip: 50 Deg Dip Direction: SW Bottom of Rupture Plane: 13.00 km Top of Rupture Plane(Ztor): 0.00 km Rrup 6.39 km Rjb: 6.39 km Rx: 6.39 km Fnorm: 0 Frev: 1 Period SA(Base Spectrum) Basin Factor Near Fault Factor(Applied) SA(Final Spectrum) 0.01 0.350 1.000 1.000 0.350 0.05 0.417 1.000 1.000 0.417 0.1 0.561 1.000 1.000 0.561 0.15 0.660 1.000 1.000 0.660 0.2 0.711 1.000 1.000 0.711 0.25 0.722 1.000 1.000 0.722 0.3 0.719 1.000 1.000 0.719 0.4 0.689 1.000 1.000 0.689 0.5 0.643 1.000 1.000 0.643 0.6 0.581 1.000 1.040 0.604 0.7 0.530 1.000 1.080 0.572 0.85 0.464 1.000 1.140 0.529 1 0.408 1.000 1.200 0.490 1.2 0.345 1.000 1.200 0.414 1.5 0.274 1.000 1.200 0.328 2 0.194 1.000 1.200 0.233 3 0.116 1.000 1.200 0.139 4 0.080 1.000 1.200 0.096 5 0.060 1.000 1.200 0.072 San Andreas (Santa Cruz Mts) 2011 CFM Fault ID: 158 Maximum Magnitude (MMax): 8 dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-168.0506712152506&y=-74.23624229467919&lat=37.33193205&long=121.90030575&sv=270&mstatus=&top 2/5

5/31/13 Printer Friendly View Fault Type: SS Fault Dip: 90 Deg Dip Direction: V Bottom of Rupture Plane: 14.80 km Top of Rupture Plane(Ztor): 0.00 km Rrup 18.20 km Rjb: 18.20 km Rx: 18.20 km Fnorm: 0 Frev: 0 Period SA(Base Spectrum) Basin Factor Near Fault Factor(Applied) SA(Final Spectrum) 0.01 0.259 1.000 1.000 0.259 0.05 0.308 1.000 1.000 0.308 0.1 0.427 1.000 1.000 0.427 0.15 0.516 1.000 1.000 0.516 0.2 0.556 1.000 1.000 0.556 0.25 0.565 1.000 1.000 0.565 0.3 0.564 1.000 1.000 0.564 0.4 0.536 1.000 1.000 0.536 0.5 0.519 1.000 1.000 0.519 0.6 0.488 1.000 1.027 0.502 0.7 0.463 1.000 1.054 0.488 0.85 0.427 1.000 1.095 0.468 1 0.396 1.000 1.136 0.450 1.2 0.358 1.000 1.136 0.407 1.5 0.313 1.000 1.136 0.355 2 0.248 1.000 1.136 0.282 3 0.165 1.000 1.136 0.188 4 0.121 1.000 1.136 0.137 5 0.096 1.000 1.136 0.109 PROBABILISTIC Period Probabilistic Model USGS Seismic Hazard Map(2008) 975 Year Return Period SA(Base Spectrum) Basin Factor Near Fault Factor(Applied) SA(Final Spectrum) 0.01 0.643 1.000 1.000 0.643 0.05 0.971 1.000 1.000 0.971 0.1 1.159 1.000 1.000 1.159 dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-168.0506712152506&y=-74.23624229467919&lat=37.33193205&long=121.90030575&sv=270&mstatus=&top 3/5

5/31/13 Printer Friendly View 0.1 1.159 1.000 1.000 1.159 0.15 1.309 1.000 1.000 1.309 0.2 1.426 1.000 1.000 1.426 0.25 1.414 1.000 1.000 1.414 0.3 1.405 1.000 1.000 1.405 0.4 1.293 1.000 1.000 1.293 0.5 1.212 1.000 1.000 1.212 0.6 1.109 1.000 1.040 1.153 0.7 1.028 1.000 1.080 1.110 0.85 0.909 1.000 1.140 1.036 1 0.809 1.000 1.200 0.970 1.2 0.692 1.000 1.200 0.830 1.5 0.572 1.000 1.200 0.686 2 0.447 1.000 1.200 0.536 3 0.288 1.000 1.200 0.346 4 0.206 1.000 1.200 0.248 5 0.166 1.000 1.200 0.199 MINIMUM DETERMINISTIC SPECTRUM Period SA 0.01 0.226 0.05 0.275 0.1 0.400 0.15 0.481 0.2 0.505 0.25 0.499 0.3 0.486 0.4 0.446 0.5 0.400 0.6 0.350 0.7 0.311 0.85 0.265 1 0.230 1.2 0.192 1.5 0.152 2 0.107 3 0.064 4 0.043 5 0.032 Envelope Data dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-168.0506712152506&y=-74.23624229467919&lat=37.33193205&long=121.90030575&sv=270&mstatus=&top 4/5

5/31/13 Printer Friendly View Envelope Data Period SA 0.01 0.643 0.05 0.971 0.1 1.159 0.15 1.309 0.2 1.426 0.25 1.414 0.3 1.405 0.4 1.293 0.5 1.212 0.6 1.153 0.7 1.110 0.85 1.036 1 0.970 1.2 0.830 1.5 0.686 2 0.536 3 0.346 4 0.248 5 0.199 dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-168.0506712152506&y=-74.23624229467919&lat=37.33193205&long=121.90030575&sv=270&mstatus=&top 5/5

5/31/13 ARS Online Caltrans ARS Online (v2.2.06) This web-based tool calculates both deterministic and probabilistic acceleration response spectra for any location in California based on criteria provided in Appendix B of Caltrans Seismic Design Criteria. More... SELECT SITE LOCATION Map data 2013 Google - Latitude: 37.39055202 Longitude: -122.09381104 VS30: 270 m/s Calculate CALCULATED SPECTRA Display Curves: 3 Printer Friendly View dap3.dot.ca.gov/ars_online/index.php 1/2

5/31/13 ARS Online Tabular Data Envelope Only Hide Near Fault Axis Scale Show Basin Apply Near Fault Adjustment To: NOTE: Caltrans SDC requires application of a Near Fault Adjustment factor for sites less than 25 km (Rrup) from the causative fault. Deterministic Spectrum Using 1.87 Km Cascade fault 10.39 Km San Andreas (Peninsula) 2011 CFM 13.20 Km San Andreas (Santa Cruz Mts) 2011 CFM Probabilistic Spectrum Using 1.87 Km (Recommend Performing Deaggregation To Verify) OK Show Spectrum with Adjustment Only Show Spectrum with and without near fault Adjustment Conditions of Use Privacy Policy Copyright 2009 State of California dap3.dot.ca.gov/ars_online/index.php 2/2

5/31/13 Printer Friendly View SITE DATA (ARS Online Version 2.2.06) Shear Wave Velocity, VS30: 270 m/s Latitude: 37.390552 Longitude: -122.093811 Depth to Vs = 1.0 km/s: N/A Depth to Vs = 2.5 km/s: N/A DETERMINISTIC Cascade fault Fault ID: 153 Maximum Magnitude (MMax): 6.7 Fault Type: Rev Fault Dip: 50 Deg Dip Direction: SW Bottom of Rupture Plane: 13.00 km Top of Rupture Plane(Ztor): 0.00 km Rrup 1.87 km Rjb: 1.87 km Rx: 1.87 km Fnorm: 0 Frev: 1 Period SA(Base Spectrum) Basin Factor Near Fault Factor(Applied) SA(Final Spectrum) 0.01 0.480 1.000 1.000 0.480 0.05 0.559 1.000 1.000 0.559 0.1 0.688 1.000 1.000 0.688 0.15 0.794 1.000 1.000 0.794 0.2 0.876 1.000 1.000 0.876 0.25 0.919 1.000 1.000 0.919 0.3 0.939 1.000 1.000 0.939 0.4 0.948 1.000 1.000 0.948 0.5 0.925 1.000 1.000 0.925 0.6 0.861 1.000 1.040 0.895 0.7 0.806 1.000 1.080 0.871 0.85 0.721 1.000 1.140 0.822 1 0.643 1.000 1.200 0.771 1.2 0.550 1.000 1.200 0.660 1.5 0.443 1.000 1.200 0.531 2 0.318 1.000 1.200 0.381 3 0.190 1.000 1.200 0.228 dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-185.01531080471048&y=-67.36362302676805&lat=37.39055202&long=122.09381104&sv=270&mstatus=&to 1/5

5/31/13 Printer Friendly View 3 0.190 1.000 1.200 0.228 4 0.130 1.000 1.200 0.156 5 0.097 1.000 1.200 0.117 San Andreas (Peninsula) 2011 CFM Fault ID: 134 Maximum Magnitude (MMax): 8 Fault Type: SS Fault Dip: 90 Deg Dip Direction: V Bottom of Rupture Plane: 13.10 km Top of Rupture Plane(Ztor): 0.00 km Rrup 10.39 km Rjb: 10.38 km Rx: 10.39 km Fnorm: 0 Frev: 0 Period SA(Base Spectrum) Basin Factor Near Fault Factor(Applied) SA(Final Spectrum) 0.01 0.339 1.000 1.000 0.339 0.05 0.402 1.000 1.000 0.402 0.1 0.543 1.000 1.000 0.543 0.15 0.647 1.000 1.000 0.647 0.2 0.700 1.000 1.000 0.700 0.25 0.716 1.000 1.000 0.716 0.3 0.719 1.000 1.000 0.719 0.4 0.697 1.000 1.000 0.697 0.5 0.685 1.000 1.000 0.685 0.6 0.651 1.000 1.040 0.677 0.7 0.621 1.000 1.080 0.671 0.85 0.579 1.000 1.140 0.660 1 0.541 1.000 1.200 0.649 1.2 0.492 1.000 1.200 0.591 1.5 0.433 1.000 1.200 0.519 2 0.348 1.000 1.200 0.417 3 0.233 1.000 1.200 0.279 4 0.170 1.000 1.200 0.205 5 0.135 1.000 1.200 0.161 San Andreas (Santa Cruz Mts) 2011 CFM Fault ID: 158 Maximum Magnitude (MMax): 8 dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-185.01531080471048&y=-67.36362302676805&lat=37.39055202&long=122.09381104&sv=270&mstatus=&to 2/5

5/31/13 Printer Friendly View Fault Type: SS Fault Dip: 90 Deg Dip Direction: V Bottom of Rupture Plane: 14.80 km Top of Rupture Plane(Ztor): 0.00 km Rrup 13.20 km Rjb: 13.20 km Rx: 10.42 km Fnorm: 0 Frev: 0 Period SA(Base Spectrum) Basin Factor Near Fault Factor(Applied) SA(Final Spectrum) 0.01 0.305 1.000 1.000 0.305 0.05 0.362 1.000 1.000 0.362 0.1 0.496 1.000 1.000 0.496 0.15 0.595 1.000 1.000 0.595 0.2 0.642 1.000 1.000 0.642 0.25 0.654 1.000 1.000 0.654 0.3 0.654 1.000 1.000 0.654 0.4 0.628 1.000 1.000 0.628 0.5 0.614 1.000 1.000 0.614 0.6 0.580 1.000 1.040 0.603 0.7 0.552 1.000 1.080 0.596 0.85 0.512 1.000 1.140 0.584 1 0.477 1.000 1.200 0.572 1.2 0.433 1.000 1.200 0.519 1.5 0.379 1.000 1.200 0.455 2 0.303 1.000 1.200 0.364 3 0.202 1.000 1.200 0.243 4 0.148 1.000 1.200 0.178 5 0.117 1.000 1.200 0.140 PROBABILISTIC Period Probabilistic Model USGS Seismic Hazard Map(2008) 975 Year Return Period SA(Base Spectrum) Basin Factor Near Fault Factor(Applied) SA(Final Spectrum) 0.01 0.636 1.000 1.000 0.636 0.05 0.939 1.000 1.000 0.939 0.1 1.110 1.000 1.000 1.110 dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-185.01531080471048&y=-67.36362302676805&lat=37.39055202&long=122.09381104&sv=270&mstatus=&to 3/5

5/31/13 Printer Friendly View 0.1 1.110 1.000 1.000 1.110 0.15 1.252 1.000 1.000 1.252 0.2 1.363 1.000 1.000 1.363 0.25 1.368 1.000 1.000 1.368 0.3 1.372 1.000 1.000 1.372 0.4 1.288 1.000 1.000 1.288 0.5 1.227 1.000 1.000 1.227 0.6 1.142 1.000 1.040 1.188 0.7 1.076 1.000 1.080 1.162 0.85 0.966 1.000 1.140 1.101 1 0.870 1.000 1.200 1.044 1.2 0.759 1.000 1.200 0.911 1.5 0.642 1.000 1.200 0.771 2 0.518 1.000 1.200 0.621 3 0.349 1.000 1.200 0.418 4 0.254 1.000 1.200 0.304 5 0.205 1.000 1.200 0.246 MINIMUM DETERMINISTIC SPECTRUM Period SA 0.01 0.226 0.05 0.275 0.1 0.400 0.15 0.481 0.2 0.505 0.25 0.499 0.3 0.486 0.4 0.446 0.5 0.400 0.6 0.350 0.7 0.311 0.85 0.265 1 0.230 1.2 0.192 1.5 0.152 2 0.107 3 0.064 4 0.043 5 0.032 Envelope Data dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-185.01531080471048&y=-67.36362302676805&lat=37.39055202&long=122.09381104&sv=270&mstatus=&to 4/5

5/31/13 Printer Friendly View Envelope Data Period SA 0.01 0.636 0.05 0.939 0.1 1.110 0.15 1.252 0.2 1.363 0.25 1.368 0.3 1.372 0.4 1.288 0.5 1.227 0.6 1.188 0.7 1.162 0.85 1.101 1 1.044 1.2 0.911 1.5 0.771 2 0.621 3 0.418 4 0.304 5 0.246 dap3.dot.ca.gov/ars_online/print_view_tab.php?x=-185.01531080471048&y=-67.36362302676805&lat=37.39055202&long=122.09381104&sv=270&mstatus=&to 5/5

5/31/13 ARS Online Caltrans ARS Online (v2.2.06) This web-based tool calculates both deterministic and probabilistic acceleration response spectra for any location in California based on criteria provided in Appendix B of Caltrans Seismic Design Criteria. More... SELECT SITE LOCATION Map data 2013 Google - Latitude: 37.44345834 Longitude: -122.16777563 VS30: 270 m/s Calculate CALCULATED SPECTRA Display Curves: 3 Printer Friendly View dap3.dot.ca.gov/ars_online/index.php 1/2