Environmental Science Associates 20070701 1st edition vector digital data BIOS California Department of Fish and Game http://bios.dfg.ca.gov ftp://ftp.dfg.ca.gov/BDB/GIS/BIOS/Public_Datasets/400_499/ds412.zip This layer contains polygon data for the perennial pepperweed (Lepidium latifolium) database. This database represents the areas surveyed throughout the San Francisco Bay, San Pablo Bay and Suisun Bay in California between July, 2004 and June, 2007. Perennial pepperweed is a non-native invasive plant that is currently invading wetland, riparian and cultivated areas throughout California. The area surveyed was identified using aerial images. This data layer is to be used in association with the shapefile, "Perennial Pepperweed Patches - San Francisco Estuary [ds295]" which shows the patches of Lepidium latifolium mapped within the areas surveyed. The database contains distribution data of surveying efforts for pepperweed (Lepidium latifolium) for individuals to view and to produce maps to assist in monitoring, eradicating and controlling this species. The "areas surveyed" polygons are meant to show the general location and extent of surveying efforts. The boundaries were not drawn with a high level of detail. Boundaries were identified using aerial images, and not GPS units on the ground. 20040701 20070601 Surveying took place 2004-2007 Complete As needed -122.546351 -121.939203 38.147835 37.407083 None weed pepperweed invasive Lepidium latifolium ISO 19115 Topic Category environment biota None Don Edwards Wildlife Refuge San Francisco Estuary San Francisco Bay None If the data is used in a professional document or published, then Environmental Science Associates should be cited as the authors of the data. Environmental Science Associates Chris Rogers and Melanie Vanderhoof Biologist mailing and physical

350 Frank H. Ogawa Plaza, Suite 300

Oakland CA 94612 US 510-839-5066 510-839-5825 crogers@esassoc.com Environmental Science Associates Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.3.1.4959 Edited original metadata by adding ISO keywords. Reprojected data into California Teale Albers NAD83. 20080501 California Department of Fish and Game Greg Ewing bios@dfg.ca.gov Vector GT-polygon composed of chains 65 NAD 1983 California Teale Albers 34.0 40.5 -120.0 0.0 0.0 -4000000.0 coordinate pair 0.000000003754707655900803 0.000000003754707655900803 meter D North American 1983 GRS 1980 6378137.0 298.257222101 ds412 Areas surveyed for Lepidium latifolium FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. date_ Date that the area was surveyed. Some areas were surveyed over several dates, in this case the first date that the surveying was started is generally listed. comments General comments. Shape_Leng Length of the feature in meters. Shape_Area Area of feature in meters squared. ESRI Positive real numbers that are automatically generated. 20160302 Environmental Science Associates Melanie Vanderhoof Biologist mailing and physical

350 Frank H. Ogawa Plaza, Suite 300

Oakland CA 94612 US 510-839-5066 510-839-5825 mvanderhoof@esassoc.com FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time