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Caution: This is an external email and may contain suspicious subject or content. Please <br />take care when clicking links or opening attachments. When in doubt, please contact your <br />IT Department <br />From:Patricia A Holroyd <br />To:Matthew Dionisio <br />Cc:Cultural Resources; Joe Stewart <br />Subject:Re: Records Search Request for 2148.0016 Hidden Canyon Residential Project <br />Date:Tuesday, March 25, 2025 8:02:12 AM <br />Attachments:Outlook-hetmi3u2.png <br />Addicott 1986 RRF to Hill.pdf <br />Monterey Group localities.xlsx <br />Dear Matthew, <br />I have conducted a review of the University of California Museum of Paleontology records for <br />paleontological resources in or near your project area. We have no record of prior finds from <br />the direct project area, but that is likely due to lack of prior access. Based on the geologic <br />mapping of the area [Dibblee, T.W. and Minch, J.A., 2005, Geologic map of the Dublin <br />quadrangle, Contra Costa and Alameda Counties, California, Dibblee Geological Foundation, <br />Dibblee Foundation Map DF-164, 1:24,000], most of the project area is underlain by Miocene <br />rocks of the Monterey Fm. or Group. These rocks have only been previously accessible in <br />road cuts northwest of the project site along I-580. <br />I have attached an Excel file with the locality coordinates and cataloged specimen information <br />for localities exposed along the highway northwest of your site. To date, only vertebrate <br />specimens have been cataloged individually. So, I've also attached a USGS report on referred <br />fossils that includes taxonomic information about the invertebrates from these sites. The <br />invertebrate specimens were originally part of the collections at the USGS in Menlo Park and <br />are now held here, but are not yet individually cataloged. <br />Billing will arrive separately from our campus business office. <br />Thank you, Pat Holroyd <br />--------------- <br />Patricia A. Holroyd, Ph.D. <br />Senior Museum Scientist <br />Museum of Paleontology <br />University of California <br />Berkeley, CA 94720 <br />On Thu, Mar 6, 2025 at 4:41 PM Matthew Dionisio <[email protected]> wrote: <br />Hello, <br />My name is Matthew Dionisio and I am an environmental services analyst at <br />FirstCarbon Solutions, an environmental compliance and consulting firm. <br />I