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Phase I Environmental Site Assessment Neighborhood E Page 9 Table 2. Chemicals Identified in Pesticide Use Reports 4-DB First Choice Foliar Pride Nutra.Wet ,3-D Amine 4 First Choice Herbicide Activator Paraquat ,4-D Amine First Choice Neutralizer Pounce 1-A Furadan Prism Accent Furadan 4F Progress Aluminum Phosphide Garlon 3A Pursuit W DG uxigro Gramoxone Extra Herbicide Pyramin FL Bayleton 50%Dry Flowable Herbicide 273 Sevin Betamix Herbicide Activator Strychnine Comite Lannate 90SP Insecticide Tough Diazinon Lorsban 4E Transline Dicamba MCPA,Dimethyla Trifluralin IOG Direx 41, Metasystox-R Trilin lOG Di-syston Methyl Parathion Velpar L Herbicide Dusting Sulfur Methomyl Warrior Epbest(?) NB 8-8-2 Weedestray FC 8-8-2 No Foam B Zinc Phosphide FC Herbicide Activator Nortron SC 1 4.3 PHYSICAL SETTING SOURCES The major source used for determining the physical setting of the Site was the USGS Clifton Court Forebay, California, 7.5-Minute Topographic Map, dated 1978. According to the map, the Site is in a rural area at an elevation of approximately 100 feet above sea level. The area is nearly level with a very low topographic gradient to the northeast. 4.4 HISTORICAL USE INFORMATION ON THE SITE City directories and Sanborn Fire Insurance Maps are not available for the Site. Historical use information on the Site was researched using aerial photographs and historical USGS topographic maps received from EDRO. Aerial photographs from 1957, 1982, and 1994 were reviewed. The Site appears to be agricultural land in the 1957 photo. Mountain House Creek is visible intersecting the Site from the northeast to the southwest along the eastern border of the property. A farm complex with trees is apparent along the southeastern side of the creek. Roads are along the field boundaries on the Site. There are no changes to the Site in the 1982 and 1994 photos. Historical topographic maps from 1916, 1952, 1968, and 1978 were reviewed. The Site appears to be agricultural land in the 1916 map. The creek is shown passing through the Site from the southwest to the northeast. A building is shown along the southeastern side of the creek at the end of a private road. Another structure is also shown along the southeastern side of the creek further down the creek. The structure along the creek and at the end of the private road still remains in the 1952 map. The other 1 a CONDOR