Remedial Design and Remedial Action Work Plan Remedial Design ...

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Aerial image is a 8/21/2009 image from National Agricultural Imagery Program (NAIP) downloaded from Cal-Atas (http://www.atlas.ca.gov) Figure 3. Location of the project site (IR Site 25) depicted on an aerial image from 2009. with small portions classified as Aquic Xerorthents, bay mud subtratum, 0 to 2 percent slopes and Urban land-Hanger one complex, 0 to 2 percent slopes, drained (Figure 4). The Soil Survey Geographic (SSURGO) data for Santa Clara County published in 2010 was acquired from the USDA’s Soil Data Mart (www.SoilDataMart.nrcs.usda.gov). Average annual precipitation for the region is 15.24 inches, as reported at Palo Alto, California, approximately 4 miles from IR Site 25. Precipitation over the last three years has varied from below average to more recently being above average with rainfall during the 2007-2008 wet season totaling 12.83 inches, the rainfall for 2008-2009 totaling 11.91 inches, and 2009-20100 totaling 16.91 inches. IR Site 25 is composed of diked wetlands with varying levels of salinity. These wetlands include coastal salt marsh habitat and its associated transition zones along artificial levees, brackish marsh habitat, and several upland peninsulass supporting highly disturbed, ruderal, non-native grassland habitat. Page 12 of 57
The Soil Survey Geographic (SSURGO) Database map for Santa Clara County published inn 2010 was acquired from the USDA’s Soil Data Mart (www.SoilDataMart.nrcs.usda.gov). Figure 4. Soils within and surrounding the project site (IR Site 25) ). Coastal Salt Marsh Habitat The largest wetlands (Central Basin and Northwest Basin) are used as stormwater retention ponds and contain two distinct habitats (open water and mudflats with no emergent vegetation and coastal salt marsh habitat in shallower areas) (Photo 1, Figure 5) ) However, due to the levees and no direct hydrologic connection to the bay, these marshes are not subject to tidal influence. The dominant species in the salt marsh include pickleweed (Salicornia virginica) and saltgrass (Distichlis spicata). Common species occurring in small, typically dense stands within the pickleweed/saltgrass matrix include at least two species of cattail (Typha sp.), marsh baccharis (Baccharis douglasii) and spearscale (Atriplex triangularis); while curly dock (Rumex crispus) and Italian thistle (Carduus pycnocephalus) are scatteredd throughoutt this habitat. The salt marsh vegetation is replaced at drier, higher elevations by non-native, ruderal (weedy) species such as ripgut brome (Bromus diandrus) , wild oat (Avena sp.), bristly oxtongue (Picris echioides), fennel (Foeniculum vulgare) and a Lotus sp. A single native shrub, coyote brush (Baccharis pilularis), which is commonly found in salt marsh/upland transitionn zones is also present. Page 13 of 57
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Draft Remedial Design and Remedial
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Draft RD/RAWP Remedial Action at IR
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Table 1 - Site-Specific Remediation
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Table 2 - Key Personnel (continued)
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NAVY Contracting Officer Charles De
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Draft Quality Control Plan Remedial
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ACRONYMS AND ABBREVIATIONS AB AHA A
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• O Organizing and maintaining al
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QCP ATTACHMENT 1 DESIGNATION LETTER
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AND LOCATION T R A N S M I T T A L
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Project-Specific SAP for the Remedi
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References California Department of
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SAP ATTACHMENT 1 SAMPLE FIELD FORMS
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2730 Shadelands Drive, Suite 100 Wa
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Sheet ____ of ____ Low-Flow Groundw
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2730 Shadelands Drive, Suite 100 Wa
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SAP ATTACHMENT 2 SAMPLE QUALITY CON
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Sheet _____ of _____ NON ROUTINE OC
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Standard Operating Procedure Shallo
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Standard Operating Procedure Sample
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Attachment A Sample Preservation an
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Attachment A Sample Preservation an
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Standard Operating Procedure Field
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Page 322 and 323: Table 1 Continued Scientific Name C
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