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PC-2025-16
City of Pleasanton
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PC-2025-16
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12/23/2025 10:30:44 AM
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12/23/2025 10:28:35 AM
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CITY CLERK
CITY CLERK - TYPE
RESOLUTIONS
DOCUMENT DATE
7/23/2025
DESTRUCT DATE
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ENGEO <br /> INCORPORATED <br /> <br /> <br />5150.100.101 <br />March 31, 2008 4 <br />trench logs, variable thicknesses of fill were encountered over horizontally stratified soil and <br />alluvium in Trenches T-1, T-2a and T-3. Near the eastern end of Trench T-2a, steeply inclined <br />contacts were logged that may be fault related. <br /> <br />A fault study was performed by Kleinfelder and Associates (1984) on the parcel to the north of the <br />hotel site. Two exploratory trenches were excavated at the approximately locations depicted on <br />Figure 4. No indications of faulting were noted in the trench logs. <br /> <br />The fault study by Burkland, (1973) was performed for the water tank located south of the site. A <br />fault feature was encountered near the east end of Trench 1. This fault features appears to be the <br />main trace of the Calaveras fault. West of the fault, interbedded sandstone, shale and conglomerate <br />were encountered in the trenching and no other indications of fault are noted in the logs. <br /> <br />Four exploratory trenches were excavated at the approximate locations shown on Figure 2 by <br />Geotechnical Engineering, Inc. (1988). Fault features were encountered near the eastern end of <br />Trench 1. These fault features appear to be associated with the main trace of the Calaveras fault. No <br />other fault features were noted in the trench logs. <br /> <br />Subsequent to the trenching by Geotechnical Engineering, Inc., an additional trench was excavated <br />by Hydro-Geo Consultants, Inc. (1990). The approximate location of the trench is shown on <br />Figure 2. The trench log indicates that no features indicative of faulting were encountered. <br /> <br />Aerial Photograph and Geomorphic Interpretation <br /> <br />Aerial photographs taken by Pacific Aerial Surveys in 1957 were examined to evaluate geomorphic <br />features that could be fault related. A prominent vegetation lineation was noted along the toe of the <br />hillside on the western portion of the site where the fault traces have been mapped by Hart (1981) <br />and Crane (1988). This vegetation lineament projects to a topographic bench or notch to the south of
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