Ms. Andrea Bitterling Helix Environmental Planning, Inc. 7578 El Cajon Boulevard La Mesa, CA 91942 RE: Archaeological Investigation for the Discharge Pipeline of the Padre Dam Eastern Service Area Secondary Connection Project, Lakeside, San Diego County, California (PDMWD Job 214007) Dear Ms. Bitterling, This report presents the results of an archaeological investigation conducted by ASM Affiliates, Inc. (ASM) for the discharge pipeline corridor of the Padre Dam Eastern Service Area Secondary Connection Project (Project) (Figures 1 and 2). The purpose of the archaeological investigation was to determine the presence or absence of cultural resources within this portion of the Project s area of potential effect (APE) which is defined as encompassing only the discharge pipeline corridor while excluding the reservoir / pump station, as well as excluding the supply pipeline. This study was completed in compliance with the California Environmental Quality Act (CEQA). In summary, no cultural resources were identified within the APE either through the archaeological pedestrian survey or through the record search. However, due to the presence of numerous cultural resources within the vicinity of the APE and poor ground surface visibility, construction monitoring by a qualified archaeologist and Native American is recommended for all ground disturbance activities. PROJECT DESCRIPTION AND LOCATION The Padre Dam Eastern Service Area Secondary Connection Project is proposing the construction of a reservoir and pump station site, a supply pipeline, a discharge pipeline and other associated features. The Project is located in the unincorporated communities of El Cajon and Lakeside, San Diego County, California. The Project is shown on the USGS 7.5 El Cajon Quadrangle Map within the unsectioned El Cajon Land Grant. This report focuses only on the proposed discharge pipeline, as previous reports have addressed other Project elements. The discharge pipeline is located along Pecan Park Lane, Olde Highway 80, and Ridge Hill Road, stretching from the Reservoir / Pump Station Site Improvements Project area at El Dorado Parkway, tunneling underneath Interstate-8 to the
Page 2 of 12 intersection of Pecan Park Lane and Rios Canyon Road for a total length of 5,659 feet (1,725 meters). The APE for the Discharge Pipeline is approximately 140 feet wide (or 20 meters on both sides of the pipeline) within the discharge pipeline easement to conservatively account for potential changes to the pipeline width, minor reroutes, staging areas, and other small variances within the proposed pipeline corridor. METHODS A records search request of the archives at the South Coastal Information Center (SCIC), San Diego State University of the California Historical Resources Information System (CHRIS), was submitted by ASM on December 16, 2012. The record search encompassed the project area and a search radius of ½ mile around it. Additionally the California Register of Historic Resources (CRHR) and the National Register of Historic Places (NRHP) were also examined to identify any additional resources within ½ mile. The record search was updated by the SCIC on January 26, 2015, to include any additional resources and reports which had been recorded since the 2012 record search. On January 22, 2015 a letter was also sent to the California Native American Heritage Commission (NAHC) to inquire about known areas of cultural concern, such as traditional cultural places, sacred sites, archaeological sites, or cultural landscapes that may exist within ½ mile of the currently proposed project area. The Discharge Pipeline APE was surveyed by ASM Senior Archaeologist Shelby Castells and Native American Monitor Frank Brown, of the Viejas Band of Kumeyaay Indians, on March 3, 2015. All accessible portions of the Discharge Pipeline APE were inspected for the presence of cultural material. The portions of the APE within the fenced Interstate-8 right-of-way was not accessible and not surveyed. Due to developed nature of the Project area all open soils were examined for cultural resources along both sides of the roadway. Cultural resources within remainder of the Project s APE have been previous addressed by prior archaeological investigations, the results of which are summarized below. RECORDS SEARCH RESULTS The results of the records search are summarized below (Tables 1-3). CHRIS records identified 28 previous reports that addressed areas within a ½ mile radius of the project area. Of these reports, only 8 reports intersect or overlap the current project area (Table 2). CHRIS records also indicated the presence of 24 previously recorded cultural resources within a ½ mile radius of the project area (Table 3). Additionally, two unique historical addresses were also identified as occurring within the ½ mile radius. One additional report and two cultural resource site record file numbers were not within the CHRIS files as that information is pending assignment. The records under review and processing by the SCIC pertain to the more recent work conducted by ASM for the Padre Dam Project.
Page 3 of 12 The NAHC response is currently pending as of March 11, 2015. Table 1. Summary of Record Search Results SCIC Record Type Mapped within 1/2 mi. of APE Intersects with APE Previous Reports 28 8 Historical Addresses 2 0 Cultural Resources 24 0 Table 2. Summary of Previous Reports within ½ mi. of the APE IC File NADB Authors Year Title Affiliation Proximity to APE Pending Pending ASM Affiliates 2010-2015 Padre Dam Alternative Survey Testing and Evaluation ASM Affiliates, Inc. 00336 1120336 Carrico, Richard 1978 Archaeological Investigations at Lake Jennings Ranch Unit 1, Sites SDI-5552(LJR-6) And SDI- 5553 (LJR-7) Unknown 01517 1121517 Van Horn, David M. and William D. McCawley 1978 Mapping Operations at SDM-W- 1123 (SDI-4666) on the Oakridge Property Near Alpine, San Diego County, CA. Archaeological, Inc. 01986 1121986 Wirth 1974 APS/SDG&E Interconnection Project Transmission System Environmental Study Phase Two Corridor Studies Cultural Resources: Archaeology Appendices Wirth 02152 1122152 A.D. Hinshaw 1987 Crestridge Specific Plan EIR EAD Log#87-GP-1 Supplemental Information A.D. Hinshaw 02181 1122181 Multi Systems,Inc 1977 Draft Environmental Impact Report Lake Jennings Vista a Large Scale Development Lakeside, San Diego County Multi Systems,Inc 02208 1122208 Brian F. Smith 1991 Results of an Archaeological Survey and the Evaluation of Cultural Resources at the El Dorado Mobile Home Park Project Brian F. Smith and
Page 4 of 12 IC File NADB Authors Year Title Affiliation Proximity to APE 02989 1122989 Kyle, Carolyn 1996 Letter Report - Capping of Prehistoric Site CA-SDI-9775 for the East County Square Project Gallegos & 02993 1122993 Kyle, Carolyn and Dennis Gallegos 1995 Historical/Archaeological Test Report for Sites CA-SDI-9774, CA-SDI-9775, CA-SDI-13187, and CA-SDI-13188 and Survey for the Off-Site Water Reservoir, East County Square Development, San Diego County, California Gallegos & 03055 1123055 Smith, Brian, Larry Pierson, Morgan Goodwin, and David Boyns 1992 Results of an Archaeological Survey and the Evaluation of Cultural Resources at the El Dorado Mobile Home Park Project Brian F. Smith and 03148 1123148 Lettieri and 1994 Technical Appendices to Draft Environmental Impact Report for the Proposed East County Squard Specific Plan, General Plan Amendment and Major Use Permit Lettieri, Mcintyre, and 03836 1123836 Townsend, Jan 1984 Southwest Powerlink Cultural Resources Managment Plan Wirth Environmental Services 04849 1124849 Wirth 1980 APS/SDG&E Interconnection Project System Environmental Study Phase II Corridor Studies Native American Cultural Resources Wirth 07594 1127594 Beddow, Donna 2002 Negative Survey Report for Ridge Hill Road Grading-14011 Ridge Hill Road, El Cajon, CA Donna Beddow 08506 1128506 Hanna, David 1977 Lake Jennings Vista County of San Diego Archaeology Survey and Report David Hanna 08564 1128564 Eighmey, James and John R. Cook 1999 Cultural Resource Survey, Evaluation and Data Recovery Plan for the Lake Jennings Property, Alpine California ASM Affiliates, Inc. 08570 1128570 Cook, John R. and Christopher Write 1977 Archaeological Survey and Report Lake Jennings Ranch John R. Cook
Page 5 of 12 IC File NADB Authors Year Title Affiliation Proximity to APE 09005 1129005 Wright, Gail 2004 Cultural Resources Survey Report for TM 5356, Log 04-14-005, Swaim Subdivision, APN 398-390-19-00 County of San Diego, Dept. of Planning & Land Use 10483 1130483 Eighmey, James, John R. Cook, and Jerry Schaefer 1999 Cultural Resource Survey, Evaluation, and Data Recovery Treatment Plan for the Lake Jennings Property Alpine California Volume I Technical Report ASM Affiliates, Inc. 10519 1130519 Wright, Gail 2002 Cultural Resources Survey Report for TM 5286, ER 02-14- 031, Riker Tentative Map, Negative Findings, APN 398-390-66 County Of San Diego, Department of Planning and Land Use 10551 1130551 Arrington, Cindy 2006 Cultural Resources Final Report of Monitoring and Findings for the QWEST Network Construction Project, State of California SWCA Environmental Consultants 10844 1130844 Arbuckle, J. 1980 Survey of the La Canada De Los Coches Unknown 11094 1131094 De Barros, Philip 2007 Cultural Resources Survey and Evaluation Of TM 5525, A 3.89- Acre Parcel at 13510 E. Lake View Road, APN 398-390-33, Lakeside, San Diego County, California Professional Archaeological Services 11367 1131367 Shalom, Diane 2007 Cultural Resources Survey Report for Magnolia Courts - TM 5541, Log 07-14-010, APN 395-220-11-00 - Negative Findings County of San Diego, Dept. of Planning & Land Use 12108 1132108 Laylander, Don, Linda Akyuz, and Sinéad Ní Ghabhláin 2008 Archaeological Evaluation Report for the Proposed Padre Dam Municipal Water District Secondary Connection Project (Ridge Hill Facilities) Johnstown, San Diego County, California ASM Affiliates, Inc. 12421 1132421 Cook, John R., Deborah Huntley, and Sherri Andrews 2000 Final: A Cultural Resources Inventory of the Proposed AT&T / PF. Net Fiber Optics Conduit Ocotillo To San Diego, California ASM Affiliates, Inc.
Page 6 of 12 IC File NADB Authors Year Title Affiliation Proximity to APE 13631 1133631 Blotner, Nicole 2010 ETS #20587, Cultural Resources Survey For the Tl 678 W2s: Distribution Relocation For the Tl 678 Wood Steel And Reconductor Project, Los Coches To Alpine Substations, San Diego County, California HDR/ E 2 m 13651 13810 1133651 1133810 Clowery, Sara C. and Nicole Blotner Robbins- Wade, Mary 2010 2000 ETS #8789; TL 678 Wood To Steel and Reconductor, Los Coches To Alpine Substations, Cultural Resources Inventory Report Archaeological Resources Survey and Assessment, Rios Canyon Ranch, El Cajon, San Diego County, California HDR/ E 2 m Affinis Table 3. Summary of Cultural Resources within ½ mi. of APE P-37- CA-SDI- Record and Updates Description Proximity to APE Pending Pending (PD-Alt-S1) 2015 (ASM Affiliates, Inc.) Sparse Lithic Scatter, Bedrock Milling, and Sparse Shell Scatter Pending Pending (PD-Alt-S2) 2015 (ASM Affiliates, Inc.) Sparse Lithic Scatter, Bedrock Milling, and Sparse Shell Scatter 005551 5551 1977 (John Cook, ASM Affiliates, Inc.) Bedrock Milling 008231 8231 1980 (Thomas Banks) Bedrock Milling 009774 9774 1983 (John Cook, ASM Affiliates, Inc.); 1993 (Ivan Strudwick, Gallegos and ) 009872 9872 1984 (Brian F. Smith) 009873 9873 1984 (Brian F. Smith) Lithic Scatter, Handstones, and Bedrock Milling Lithic Scatter, Handstones, and Midden Deposit --Noted as destroyed by construction Lithic Scatter, Pottery Scatter, Handstones, Cores, Tools, Bedrock Milling, and Midden Deposit
Page 7 of 12 P-37- CA-SDI- Record and Updates Description Proximity to APE 011705 11705 1990 (John Cook, ASM Affiliates, Inc.); 2014 (Andrew Pigniolo, Laguna Mountain Environmental) 012248 12248 1990 (Brian F. Smith) 013188 13188 015320 -- 015321 -- 1993 (Ivan Strudwick, Gallegos and ); 2009 (J. Whitaker, HDR/e2M 1993 (Ivan Strudwick, Gallegos and ) 1993 (Ivan Strudwick, Gallegos and ) Lithic Scatter, Pottery Scatter, Handstones, Tools, and Bedrock Milling Lithic Scatter, Bedrock Milling, and Shell Scatter Bedrock Milling Isolate Handstone Isolate Projectile Point 017066 15105 1999 (Mooney & ) Bedrock Milling 017067 15106 1999 (Mooney & ) Bedrock Milling 017084 15117 1998 (Jim Eighmey, ASM Affiliates, Inc.); 2010 (Nicole Blotner, HDR/e2M); 2014 (Shelby Castells, ASM Affiliates, Inc.) Lithic Scatter, Pottery Scatter, Handstones, Cores, Tools, and Midden Deposit --Current site boundary is mismapped. Correction pending. (Current SCIC data mismaps it as intersecting) 023862 15975 2001 (Robbins-Wade, Affinis) Lithic Scatter, Pottery Scatter, and Bedrock Milling 023863 15976 2001 (Robbins-Wade, Affinis) Lithic Scatter and Bedrock Milling 028729 18472 028730 18473 033512 21070 033513 21071 033816 -- 033817 -- 033818 -- 033819 -- 033868 21272 2007 (Linda Akyuz, ASM Affiliates, Inc.); 2007 (C. Bowden-Renna, EDAW, Inc.) 2007 (Linda Akyuz, ASM Affiliates, Inc.) 2013 (Sue Wade, Heritage Cultural Resources) 2013 (Sue Wade Heritage Cultural Resources) 2014 (Andrew Pigniolo, Laguna Mountain) 2014 (Andrew Pigniolo, Laguna Mountain) 2014 (Andrew Pigniolo, Laguna Mountain) 2014 (Andrew Pigniolo, Laguna Mountain) 2014 (Sue Wade, Heritage Resources) Lithic Scatter, Pottery Scatter, Bedrock Milling, and Midden Deposit Historic Scatter, Historic Rock Wall, and Foundations Lithic Scatter, Pottery Scatter, Groundstone and Bedrock Milling Historic Septic Tank and Foundations Isolate Flake Historic Concrete Foundations Historic Well Historic Scatter Lithic Scatter and Bedrock Milling
Page 8 of 12 Summary of Reports Project APE Very few studies intersect or overlap with the APE, and approximately thirty-percent of the APE has been previously surveyed for cultural resources. Most of those studies were noted to intersect and cross through the APE only as linear survey areas for utilities or roads. The APE runs along paved roads indicating that any cultural resources that are or were present would very likely have been disturbed by prior construction to a certain depth. However, subsurface cultural resource deposits could be preserved under the pavement. Summary of Sites Occurring within ½ Mile In general the sites that occur within a ½ mile radius of the Discharge Pipeline APE consist predominantly of prehistoric resources. Most of these prehistoric sites contain or entirely consist of bedrock milling components, 12 with identified lithic scatters, and some sites were noted to have prehistoric ceramics. In general most of the sites were disturbed by modern activities with sparse surficial as well as sparse shallow subsurface deposits. Some remnants of historic foundations and historic scatters also occur infrequently within a ½ mile radius of the Discharge Pipeline APE. Two resources within the Reservoir / Pump Station Site Improvements Project area, adjacent to the Discharge Pipeline APE, (Site ID Pending) were identified by ASM during a prior survey and subsurface testing program on the western end of the Project APE, but neither resource is considered significant. Historic Addresses Two historic addresses occur within the ½ mile search but lie outside the APE. California Historic Landmark 425, Rancho Cañada de los Coches This resource consists of a plaque commemorating Cañada de Los Coches Rancho, the smallest Mexican grant in California. This landmark is mapped at the site of the old grist mill and was designated in 1949. Information on this resource was obtained from the CRHR Register and is absent in the data provided by the SCIC. This landmark was noted to occur within the half-mile search area but still outside of the current project APE. Ridge Hill Facilities (Johnstown) It is also important to note that the current project APE is well outside (~600 ft north) of previously proposed work conducted for the Secondary Connection Ridge Hill Facilities (Johnstown) Project. This project was suspended following an unanticipated discovery. The currently proposed project APE avoids and bypasses this parcel.
Page 9 of 12 ARCHAEOLOGICAL SURVEY RESULTS The visual inspection of the Discharge Pipeline APE provided no evidence for the presence of cultural resources within the APE. However, the majority of the APE is located within the public right-of-way and was paved or covered with gravel or vegetation (Figures 3 and 4). Exposed soils were visually examined, but could only be found in small patches along the roadway, south of Olde Highway 80 between Pecan Park Lane and Ridge Hill Road, and at the cul-de-sac at the western end of Ridge Hill Road. While the majority of the APE has been previously disturbed by the construction of Olde Highway 80, Pecan Park Lane, Ridge Hill Road, and Interstate-8, it is possible intact subsurface cultural deposits have been preserved underneath the roadways. In addition several granitic bedrock locations are visible at the western end of Ridge Hill Road; however, they are located on private property and could not be examined for any possible bedrock milling features (see Figure 4). CONCLUSIONS AND RECOMMENDATIONS Although no cultural resources were identified during the archaeological survey of the Discharge Pipeline APE, construction monitoring is recommended for this portion of the Project due to the poor ground surface visibility, and the presence of cultural resources within the vicinity of the Discharge Pipeline. If you have any questions regarding this report, please do not hesitate to contact me. Sincerely, Mark S. Becker, Ph.D., RPA Principal Investigator Attachments: Maps Figure 1. Regional project location Map. Figure 2. 1:24,000 scale project location Map. Figure 3. View of the paved and unpaved APE, facing north. Figure 4. View of the APE, and the granitic bedrock adjacent to the APE, facing east.
Page 10 of 12 Figure 1. Regional project location Map.
Page 11 of 12 Figure 2. 1:24,000 scale project location Map.
Figure 3. View of the paved and unpaved APE, facing north. Figure 4. View of the APE, and the granitic bedrock adjacent to the APE, facing east.