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APPENDIX C Archaeological Survey Report and Historic Properties Survey Report

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APPENDIX C Archaeological Survey Report and Historic Properties Survey Report APPENDIX C Archaeological Survey Report and Historic Properties Survey Report State of California Transportation Agency Department of Transportation HISTORIC PROPERTY SURVEY REPORT 1. UNDERTAKING DESCRIPTION AND LOCATION District County Route Post Miles Unit E-FIS Project Number Phase Federal Project. Number. District County (Prefix, Agency Code, Project No.) Location 12 ORA BRLO-5955 (087) Ladd Canyon and Santiago Road, Community of Silverado For Local Assistance projects off the highway system, use headers in italics Project Description: Orange County Public Works proposes to remove and replace the existing Silverado Canyon Road over Ladd Creek Bridge (Ladd Canyon Bridge) (Bridge Number 55C0175) at a location slightly east of the intersection of Ladd Canyon Road and Silverado Canyon Road (proposed Project). The proposed Project will remove the existing Ladd Canyon Bridge and replace with a new bridge, perform required grading within the vicinity of the bridge in order to tie into the existing slopes, and provide drainage improvements where feasible. In order to provide for the temporary parking of construction equipment and construction employee vehicles and the storage of construction supplies, the proposed Project includes three staging areas along Silverado Canyon Road to the west of the existing bridge. Silverado Canyon Road will be used to transfer the supplies from the staging areas to the Project area. Based on the findings of an in-depth inspection of the bridge conducted by the County, in coordination with Caltrans, the existing Ladd Canyon Bridge has been classified as consist of a pre-cast concrete bridge that provides an expansion from the existing bridge width to provide safe conditions for vehicular traffic and pedestrian access. Portions of the two-lane bridge will remain open during demolition and construction to provide continued vehicular access along Silverado Canyon Road. This proposed Project will not a require a construction easement or the acquisition of new right-of-way, as the bridge is located within the County of Orange right-of-way. the proposed Project as well as any areas to be used for staging and transportation of materials. The Project generally involves limited construction efforts, which would be focused on the bridge, and areas immediately surrounding the bridge. The Project would require the construction of new footings. No improvements or construction will occur within the staging areas or along Silverado Canyon Road. The Project is along Silverado Canyon Road slightly east of the intersection of Silverado Canyon Road and Ladd Canyon Road, 2.2 miles east of Santiago Canyon Road, in the unincorporated community of Silverado in eastern Orange County (Figure 1, Attachment 1). The APE is bounded by the community of Silverado and the [HPSR form rev 08/07/15] Caltrans, Division of Environmental Analysis. Copyright © 2014 State of California. All rights reserved. Alteration to the title and section headings is prohibited. Page 1 State of California Transportation Agency Department of Transportation HISTORIC PROPERTY SURVEY REPORT Cleveland National Forest to the east, rural residential uses to the north and west, Silverado Creek, commercial properties, and undeveloped open space to the south. The APE falls within Township 5 South, Range 7 West, and Section 8 of the El Toro, California 1:24,000 U.S. Geological Survey 7.5-Minute Quadrangle Map (Figure 2, Attachment 1). 2. AREA OF POTENTIAL EFFECTS In accordance with Section 106 Programmatic Agreement Stipulation VIII.A, the Area of Potential Effects (APE) for the project was established in consultation with Caltrans and on March 18, 2019. See Figure 3, Attachment 1 in this Historic Property Survey Report for the APE map. The direct APE consists of all ground disturbance for the proposed project as well as any areas to be used for staging and transportation of materials (see Figure 3, Attachment 1). The project generally involves limited construction efforts, which would be focused on the bridge, and areas immediately surrounding the bridge. The horizontal extent of the direct APE includes the existing bridge at the intersection of Silverado Canyon Road and Ladd Creek Road, extending 0.4 mile west to the Silverado Community Center at 27641 Silverado Canyon Road. The extent of this planned APE footprint is approximately 7.7 acres. The planned vertical extent of the APE is represented by a maximum excavation depth of 20 feet below the existing ground surface for the installation of the footings (Figure 4, Attachment 1). Additionally, an existing adjacent water line, electrical line, and fire hydrant are present along the side of the existing bridge. 3. CONSULTING PARTIES / PUBLIC PARTICIPATION X Native American Tribes, Groups and Individuals (Attachment 2) Agua Caliente Band of Cahuilla Indians (Patricia Garcia, Tribal Historic Preservation Officer): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017. Victoria Harvey replied via email on May 22, 2017 to state that the proposed project is not located within the Agua Caliente Band of Cahuilla Indians tribal territory and deferred to applicable local tribes for comment. Agua Caliente Band of Cahuilla Indians (Jeff Grubbe, Chairperson): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017. Victoria Harvey replied via email on May 22, 2017 to state that the [HPSR form rev 08/07/15] Caltrans, Division of Environmental Analysis. Copyright © 2014 State of California. All rights reserved. Alteration to the title and section headings is prohibited. Page 2 State of California Transportation Agency Department of Transportation HISTORIC PROPERTY SURVEY REPORT proposed project is not located within the Agua Caliente Band of Cahuilla Indians tribal territory and deferred to applicable local tribes for comment. Juaneno Band of Mission Indians (Sonia Johnston, Tribal Chairperson): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017 and received no response. Follow-up phone call attempt made June 21, 2017. No response received to-date. Juaneno Band of Mission Indians Acjachemen Nation (Matias Belardes, Chairperson): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017 and received no response. Follow-up phone call attempt made June 21, 2017. No response received to-date. Juaneno Band of Mission Indians Acjachemen Nation (Joyce Perry, Representing Tribal Chairperson): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017 and received no response. Follow-up phone call attempt made June 21, 2017. No response received to- date. Juaneno Band of Mission Indians Acjachemen Nation (Teresa Romero, Chairwoman): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017 and received no response. Follow-up phone call attempt made June 21, 2017. No response received to-date. Pauma and Yuima Reservation (Temet Aguilar, Chairperson): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017 and received no response. Follow-up phone call attempt made June 21, 2017. No response received to-date. Soboba Band of Luiseno Indians (Joseph Ontiveros, Cultural Resource Department): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017 and received no response. Follow-up phone call attempt made June 21, 2017. No response received to-date. Soboba Band of Luiseno Indians (Rosemary Morillo, Chairperson): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017 and received no response. Follow-up phone call attempt made June 21, 2017. No response received to-date. Soboba Band of Luiseno Indians (Carrie Garcia, Cultural Resources Manager): Dudek sent a letter and map regarding proposed undertaking via U.S Mail on May 5, 2017 and received no response. Follow-up phone call attempt made June 21, 2017. No response received to-date. X Native American Heritage Commission (Attachment 2) Dudek contacted on April 17, 2017 for a review of the Sacred Lands File (SLF) and list of appropriate Native American contacts. The NAHC faxed a response [HPSR form rev 08/07/15] Caltrans, Division of Environmental Analysis. Copyright © 2014 State of California. All rights reserved. Alteration to the title and section headings is prohibited. Page 3 State of California Transportation Agency Department of Transportation HISTORIC PROPERTY SURVEY REPORT on April 17, 2017 of Native American contacts was provided (see Attachment 2). X Other (Attachment 3) Caltrans Historic Bridge Inventory: the original construction date and Historical Significance Status was researched for Bridge Number 55C0175 within the Local Agency Bridges Structure Maintenance and Investigations database. Bridge Number 55C0175 was constructed in 1947 and determined to be Category 5 Not eligible for Listing in the National Register. 4. SUMMARY OF IDENTIFICATION EFFORTS X National Register of Historic Places X California Points of Historical Interest X California Register of Historical X California Historical Resources Resources Information System (CHRIS) X California Inventory of Historic X Caltrans Historic Highway Bridge Resources Inventory X California Historical Landmarks X Results: A CHRIS records search was conducted at the South Central Coastal Information Center on May 3, 2017 (confidential results are provided in Attachment 4). A total of 45 cultural resources studies have been previously conducted within 1-mile of the APE. Of these studies, eight (OR-003273, OR-004177, OR- 004178, OR-004314, OR-004315, OR-004316, OR-004317, and OR-004318) are located within the project APE. Five of these studies (OR-003273, OR- 004177, OR-004178, OR-004314, and OR-004318) concern a single historical cultural resources relevant to the project APE. A total of 27 previously recorded cultural resources were identified within a 1-mile radius of the project APE. Resources within the 1-mile radius included 17 prehistoric sites, one multi-component site, four elements of the historic Silverado Ranger Station district (30-150001), three historic archaeological sites, and two historic monuments.
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