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4400 Black Avenue
<br />Pleasanton, California
<br />648-26-2
<br />Page 9
<br />developed use, or back to 1940, whichever is earlier, using reasonably ascertainable standard
<br />historical sources. The identification of obvious uses of adjoining properties also is required.
<br />6.1 HISTORICAL SUMMARY
<br />The historical sources reviewed are summarized below. The results of our review of these
<br />sources are summarized in Table 6.
<br />Historical Aerial Photographs: We reviewed aerial photographs dated between 1939
<br />and 2016 obtained from EDR of Milford, Connecticut. We obtained an additional aerial
<br />photograph dated 2014 from Google Earth; copies of aerial photographs reviewed are
<br />presented in Appendix C.
<br />Historical Topographic Maps: We reviewed USGS 15-minute and 7.5-minute historic
<br />topographic maps dated 1906, 1941, 1947, 1953, 1961, 1968, 1973, 1980, 2012, 2015,
<br />and 2018; copies of historic topographic maps reviewed are presented in Appendix C.
<br />Historical Fire Insurance Maps: EDR reported that the Site was not within the
<br />coverage area of fire insurance maps.
<br />Table 6. Summary of Historical Source Information
<br />Date Source Comments
<br />1906 Topographic
<br />Maps
<br />Site:Site undeveloped, no structures were depicted.
<br />Adjoining Properties:No structures were depicted. A roadway in the
<br />approximate location of present-day Black Avenue is depicted
<br />adjacent to the north.
<br />1939,
<br />1940, 1949
<br />Aerial
<br />Photographs
<br />Site:Site undeveloped and vacant.
<br />Adjoining Properties:Rural residential property observed to the east,
<br />roadway in the location of Black Avenue observed adjacent to the
<br />north, with a dairy farm operation north of Black Avenue.
<br />1941, 1947 Topographic
<br />Maps
<br />Site:Site undeveloped, no structures were depicted.
<br />Adjoining Properties:Four structures were depicted to the west.
<br />1953,
<br />1961, 1968
<br />Topographic
<br />Maps
<br />Site:Site undeveloped, no structures were depicted.
<br />Adjoining Properties:Two structures were depicted to the west.
<br />Amador Valley High School depicted to the south. Black Avenue
<br />identified adjacent to the north.
<br />, Connecticut. We obtained an additional aerial , Connecticut. We obtained an additional aerial
<br />photograph dated 2014 from Google Earth; copies of aerial photographs reviewed are photograph dated 2014 from Google Earth; copies of aerial photographs reviewed are
<br />We reviewed USGS 15We reviewed USGS 15--minute and 7.5minute and 7.5-minute historic
<br />1906, 1941, 1947, 1953, 1961, 1968, 1973, 1980, 2012, 2015, 1906, 1941, 1947, 1953, 1961, 1968, 1973, 1980, 2012, 2015,
<br />copies of historic topographic maps reviewed are presented in Appendix C. copies of historic topographic maps reviewed are presented in Appendix C.
<br />EDR reported that the Site was not within the EDR reported that the Site was not within the
<br />. Summary of Historical Source Information
<br />Site:Site undeveloped, nSite undeveloped, no structures o structures were
<br />AAdjoining Propertiesdjoining Properties::No structures No structures
<br />approximate location of presentapproximate location of present day Black Avenue is depicted
<br />adjacent to the north.adjacent to the north.
<br />PhotographsPhotographs
<br />Site:Site undeveloped and vacant. Site undeveloped and vacant.
<br />Adjoining Properties:Adjoining Properties:
<br />roadway in the location of Black Avenue observed adjacent to the roadway in the location of Black Avenue observed adjacent to the
<br />north, with a dairy north, with a dairy
<br />1941, 19471941, 1947 Topographic Topographic
<br />Maps
<br />Site:Site undeveloped, nSite undeveloped, n
<br />AAdjoining Propertiesdjoining Properties
<br />Topographic Topographic
<br />MMapsaps
<br />SiteSite:Site undeveloped, n
<br />AA
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