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Final-Public Version

Pasadena Non-Potable Water Project, Los Angeles County, California

Results of Archaeological Testing at the Sheldon Non-Potable Water Reservoir in the Vicinity of CA-LAN-26

Prepared for October 2016

RMC Water and Environment Rosalyn Prickett, Senior Water Resources Planner 10509 Vista Sorrento Parkway, Suite 205 San Diego, CA 92121 Phone: 858-875-7400

Final-Public Version

PASADENA NON-POTABLE WATER PROJECT, LOS ANGELES COUNTY, CALIFORNIA


Prepared for October 2016 RMC Water and Environment Rosalyn Prickett, Senior Water Resources Planner 10509 Vista Sorrento Parkway, Suite 205 San Diego, CA 92121 Phone: 858-875-7400

[ESA PCR 2121 Alton Parkway, Suite 100 Irvine, California 92606

Project Director: Kyle Garcia, Senior Archaeologist

Principal Investigator: Monica Strauss, M.A., RPA

Authors: Kyle Garcia, Senior Archaeologist Sara Dietler, Senior Archaeologist With Contributions by; Alyssa Bell, Ph.D.

Project Site Location: Township 1 North, Range 12 West, Sections 5, 6, and Unsectioned Pasadena and Mount Wilson (CA) USGS 7.5-minute Topographic Quads

Acreage: Approx. 0.5 acre]

2121 Alton Parkway Suite 100 Irvine, CA 92606 949.753.7001 www.esassoc.com

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PCR0007.00

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TABLE OF CONTENTS

PASADENA NON-POTABLE WATER PROJECT, LOS ANGELES COUNTY, CALIFORNIA


Page

Executive Summary ................................................................................................................. 1

Introduction .............................................................................................................................. 2 Proposed Project and Location ........................................................................................ 2 Project Background .......................................................................................................... 2 Project Personnel ............................................................................................................. 3 Setting and Context .......................................................................................................... 3

Research Goals ........................................................................................................................ 5

Methods .................................................................................................................................... 6 Fieldwork Methods ........................................................................................................... 6 Laboratory Methods .......................................................................................................... 8

Results ...................................................................................................................................... 8

Conclusion ............................................................................................................................. 20

References Cited ................................................................................................................... 21

Appendix A RMC Technical Memo: Previous Disturbances at Sheldon Reservoir

Appendix B Native American Monitor Notes and Photographs

Pasadena Non-Potable Water Project i ESA /.PCR0007 Results of Archaeological Testing and Evaluation at Sheldon Reservoir CA-LAN-26 October 2016

Table of Contents

List of Figures

Figure 1 Test Location Map ...................................................................................................... 7 Figure 2 BHT Excavation Photographs .................................................................................. 10 Figure 3 BHT Excavation Photographs .................................................................................. 11 Figure 4 BHT Excavation Photographs .................................................................................. 12 Figure 5 BHT Excavation Photographs .................................................................................. 13 Figure 6 BHT Stratigraphic Profiles (BHT 1) .......................................................................... 14 Figure 7 BHT Stratigraphic Profiles (BHT 2) .......................................................................... 15 Figure 8 BHT Stratigraphic Profiles (BHT 3) .......................................................................... 16 Figure 9 BHT Stratigraphic Profiles (BHT 4) .......................................................................... 17 Figure 10 BHT Stratigraphic Profiles (BHT 5) .......................................................................... 18

Pasadena Non-Potable Water Project ii ESA /.PCR0007 Results of Archaeological Testing and Evaluation at Sheldon Reservoir CA-LAN-26 October 2016

Pasadena Non-Potable Water Project

Archaeological Testing Results at the Sheldon Non-Potable Water Reservoir in the Vicinity of CA-LAN-26

Executive Summary Pasadena Water and Power (PWP) is proposing the six-phase Non-Potable Water Project (Project) to distribute non-potable water supplies within PWP, Foothill Municipal and Cal American Water Companys service areas. As for Phase 1 of the Project PWP is applying for federal funding from the United States Environmental Protection Agency, and the United States Bureau of Reclamation (USBR) compliance with Section 106 of the National Historic Preservation Act, 16 USC 470(f), and its implementing regulations under 36 CFR Part 800, is required.

The proposed Sheldon Non-Potable Water Reservoir No. 1 (Sheldon Reservoir) and two water pipelines are in the vicinity of resource CA-LAN-26, a known prehistoric cemetery uncovered and removed from the area in 1938. Per a request from the State Water Resources Control Board (SWRCB) to determine if the boundaries of CA-LAN-26 extended into the areas proposed for construction, from August 24 to August 26, 2016, ESA PCR completed an archaeological testing in the presence of three Native American field monitors. The testing included excavation of five backhoe trenches.

The test found eight modern or historic period artifacts and no prehistoric artifact, ecofacts, or features. The modern/historic period artifacts included small fragments of bottle glass and red brick fragments. These items appear to be of recent or unknown age; however, due to the lack of temporally diagnostic attributes, a true date of manufacture was not established for them. No other historic or prehistoric materials were recovered from the testing. Therefore, it does not appear that CA-LAN-26 extends into the area where grading for the Sheldon Reservoir is proposed. ESA PCR believes that this testing effort constitutes a good faith effort to identify resources pursuant to 800.4(b) in this particular location of the Area of Potential Effect.

Pasadena Non-Potable Water Project 1 ESA /.PCR0007 Research Design for Archaeological Testing and Evaluation at Sheldon Reservoir CA-LAN-26 October 2016

Introduction

Proposed Project and Location The proposed Pasadena Non-Potable Water Project includes construction and operation of pipelines and miscellaneous non-potable water facilities (i.e. storage reservoirs, pressure-reducing and pump stations, hydroelectric turbine facilities, etc.) in the City of Pasadena, the City of Glendale, the City of La Caada Flintridge, and the unincorporated community of Altadena.

The project is located in the San Gabriel Valley, approximately 10 miles northeast of downtown Los Angeles in Los Angeles County, California in unsectioned areas of the Pasadena (1966, photorevised 1988), California United States Geological Survey (USGS) 7.5' topographic quadrangle maps in Township 1 North, Range 12 West.

Project Background PCR Services Corporation (PCR), now known as ESA PCR, conducted a cultural resources assessment of the project from 2009 to 2015 to identify potential impacts to cultural resources in order to demonstrate compliance the California Environmental Quality Act. This assessment included a cultural resources records search through the California Historic Resources Inventory System (CHRIS), Native American outreach, and a pedestrian survey of the Area of Potential Effect (APE) in July 2011. The results of the records search indicated that one prehistoric archaeological resource (CA-LAN-26) had been recorded within the boundaries of the APE for the project, in the vicinity where the Sheldon Potable Reservoir No. 1is proposed. More details about resource CA-LAN-26 are provided in section Resource CA-LAN-26 below.

ESA PCR did not identify any archaeological resources on the surface during the pedestrian survey of the area immediately north of the existing potable reservoir where grading for the non-potable reservoir is proposed. The 2011 subsurface geophysical survey of this area identified three soil anomalies (Target of Interest 1 and Anomalies 1 and 2). One of these anomalies, Target of Interest (TOI) 1, is consistent with a prehistoric house pit. However, it is not possible to confirm whether these soil anomalies are archaeological features (i.e., burial, hearth, house pit, etc.) or natural features (i.e., rodent burrow, natural soil variations, etc.) without conducting additional subsurface investigations (such as mechanical or manual excavations). As a result of consultation with USBR, mitigation for the project includes avoidance of TOI and Anomalies 1 and 2, and the area will be fenced off during construction and protected from any disturbance.


The portion of the APE that is the focus of this report is situated immediately north of the existing semi-buried Sheldon potable water reservoir where the construction of the new Sheldon non-potable water reservoir and the non-potable water pipelines are proposed (hereafter referred to as the Study Area).

At the request of the SWRCB (which has been delegated as the lead federal agency under Section 106) and in order to determine whether portions of resource CA-LAN-26 are located within these specific areas of the APE, ESA PCR created a testing plan: Pasadena Non-Potable Water Project, Los Angeles County, California, Archaeological Testing Plan for Sheldon Non-Potable Water Reservoir in the Vicinity of CA-LAN-26. The main objective of the testing plan was to determine the horizontal and vertical boundaries of any cultural resources within this portion of the APE, if any exist (i.e., an extended Phase I assessment). The plan avoided any disturbance to TOI and Anomalies 1 and 2. The testing plan also served to comply with Section 106 of the NHPA, and to constitute a good faith effort to identify resources pursuant to 800.4(b).

The testing was completed between August 24 through the 26th, 2016.

Project Personnel Project Management and report contributions were provided by Kyle Garcia, B.A., Monica Strauss, M.A., R.P.A., served as Principal Investigator. Sara Dietler, B.A., served as senior archaeologist and also contributed to the report; and Stephan Geissler, served as the Senior GIS Specialist. The fieldwork component of the project included Mr. Garcia, Mrs. Dietler, and Henry Chodsky.

The Native American field monitors included the following individuals: Robert Dorame of the Gabrielino Tongva Indians of California Tribal Council, Andy Salas of the Gabrieleno Band of Mission Indians Kizh Nation, and Adrian Morales of Gabrieleno/Tongva San Gabriel Band of Mission Indians. Bert Lee of Bert Lee Backhoe provided the backhoe services.

Setting and Context

Project Geology Sheldon Reservoir site is located to the east of the Arroyo Seco and the Verdugo Mountains in northwestern Pasadena, California. The surficial geology of the area has been mapped at a scale of 1: 24,000 by Dibblee and Ehrenspeck (1989). This map indicates the surface area around Sheldon Reservoir consists of alluvial fan gravel and sand dating to the Pleistocene, which lasted from about 2,588,000 to 11,700 years ago, (Dibblee and Ehrenspeck 1989).


These sediments are primarily derived from erosion of the surrounding mountains. Given the reservoirs proximity to the Arroyo Seco, it is likely that the area has been heavily impacted by changes of the rivers course over time, as well as by flood events. Large flood events can occur on decadal or centennial scales, the most recent of which in the Pasadena area occurred in 1938 (Krumbein 1941). Trenches dug around the western edge of the reservoir during the archaeological trenching cut through 1 to 2 meters of sediment, revealing fine-grained sands consistent with alluvial sediments for most of the depth with a layer of matrix-supported, poorly sorted sand, pebble, and cobble sediment at the base of the trenches. Cobbles in this layer are composed of granite, and ranged from sub-angular to sub-rounded, which is consistent with erosional deposits from a fairly close source, such as the Verdugo Mountains, which are primarily granite (Dibblee and Ehrenspeck 1989). This is consistent with the mapped geology, as cobble beds are common components of alluvial fans, particularly close to the source of the deposits.

Resource CA-LAN-26 CA-LAN-26 is a Native American cemetery excavated by Edwin Walker and the Southwest Museum shortly after its discovery by the Pasadena Water Department (now PWP). CA-LAN-26 included 53 burials (or inhumations), two cremations, artifacts (e.g., flaked stone tools and groundstone), and rock cairns that were discovered in the vicinity of the existing Sheldon potable water reservoir. There were two discrete strata (or levels) that the burials were found in an upper level at 2.5 feet and a lower level at 4 feet below the surface. Walker suggested that the remains from the upper level were likely from a later time period given that they were better preserved than the remains from the lower level.

A separate groundstone cache feature was encountered from one foot to four feet below the surface that yielded several complete grinding slabs (i.e., metates) and stone bowls that Walker claims had been purposely buried inverted. He proposes that the owners of the groundstone artifact cache may have lived in a village located nearby. Walker suggests that this Indian village exists since numerous manos and other artifacts had been recovered from this area when the original oranges groves were being planted there (Walker 1952:71). Aerial photographs show orchards and some residential development in 1952 (NETR Online 2016) in this area. By 1964, the area was fully developed with the current residential community seen today. In addition, ten fireaffected rock piles (or cairns) were identified approximately 10 feet to the north of the burials in a cluster that contained more broken ground stone artifacts and projectile points (Walker 1952:79).


Previous Disturbances to the Testing Plan Area The portion of the APE that is the focus of the testing plan is situated north of the existing semi-buried reservoir and is currently used for parking and materials staging associated with the reservoir. A technical memorandum dated May 25, 2016 prepared by RMC Water and Environment, Inc. (see Appendix A) indicates that disturbances to the area north of the existing reservoir include the following:

Sheldon Well installation in 1921;

A 4-inch diameter sewer main installed in 1938;

A 4-inch diameter water main in 1938;

A 20-inch diameter water main was installed in 1938;

Annual trenching and shoring training (excavation of a 6 foot deep, 4 foot wide and 8 foot long trench every year between 2000 and 2010 for competent person and trench safety training);

Geotechnical boring in 2012 as part of the proposed Project;

Construction of two buildings to the north of the northeast corner of the existing reservoir at an unknown date (similar buildings appear in Walkers photos, see Figure 2, so they may pre-date 1938).

There is no information available as to whether cultural resources were encountered during any of these activities. A Sanborn Fire Insurance Map review was conducted as part of this study, however coverage of this portion of the APE was not available.

Research Goals The objective of the testing plan was to determine the horizontal and vertical boundaries of any cultural resources within this portion of the APE, if any were to exist (i.e., an extended Phase I assessment). In addition, if enough data could be obtained from the testing, ESA PCR would evaluate the resources eligibility for listing in the National Register of Historic Places. Evaluation of cultural resources (i.e., a Phase II assessment) is determined by conducting an evaluation of a resources eligibility for listing in the National Register of Historic Places and determining whether the resource retains integrity. This is achieved by applying the National Register Criteria for Evaluation. Prehistoric archaeological resources (such as CA-LAN-26) are most often recommended eligible under Criterion D (of the National Register), which is the potential for the resource to contribute information important to the study of history or prehistory.


This is also known as the potential for a given resource to answer specific research questions (or its inherent data potential). Resources can also be eligible if they are associated with a significant event (Criterion A), a significant person (Criterion B), or are significant in design or workmanship or possess high artistic values (Criterion C). In the event that resources were encountered, a preliminary Research Design was developed by ESA PCR in order to evaluate the resources data potential (Criterion D) and to determine whether the resource is eligible under Criterion A through C. This research design is provided in the testing plan (see ESA PCR 2016).

Methods This section describes both the field and laboratory methods used for the testing. The program is designed to assess the physical structure and stratigraphy of the area and to provide a sufficient sample to assess whether any resources encountered have the potential to address the identified research issues from ESA PCR (2016).

Fieldwork Methods Under the direction of Mr. Garcia, a professional equipment operator with a backhoe mechanically excavated five (5) backhoe trenches (BHT) in areas impacted by excavations for the proposed Sheldon Reservoir. The locations of the trenches relative to the project components are displayed in Figure 1, Test Location Map. The JCB backhoe was equipped with a 3-foot (1-meter) wide, 7-pronged bucket that was used for excavation. The test was completed from August 24 to 26, 2016.

All parties, including PWP, all three Native American monitors, and ESA PCR agreed on the morning of August 26, 2016 that BHT 6 would not be excavated due to several reasons:

No prehistoric artifacts were found in the first five trenches

Existing water pipes and a sewer pipe are in the area of the proposed trench 6

Disturbances to the soil from previous construction activities that have likely displaced resources (see list on page 5 of this report)

BHT length was determined by the archaeologist based upon the exposure required to identify, record, and evaluate soil stratigraphy, or buried features or artifact/ecofact concentrations, if found. In general, the trenches were excavated to depths of 6.5 to 8 feet (2 to 2.50 m) and were 3-feet (1-m) wide and approximately 22 feet (6.75 m) in length.


North Arroyo Blvd

Sheldon Reservoir

1 325

4

6

Pasadena Non-Potable Water ProjectFigure 1Test Location MapSOURCE: Google Maps, 2015.

0 100Feet

Phase I ProjectPipeline DataArea of PotentialEffect (APE)TOI-1Anomalies 1 and 2Extent ofGrading/ExcavationImpacts For SheldonReservoir No. 1Footprint of SheldonReservoir No. 1(Phase 1)Backhoe Trenches 1-5(Excavated)Backhoe Trench 6(Unexcavated)

To comply with Occupational Safety and Health Administration standards, BHTs that reached depths of 5 feet or greater included benching along the edges of each respective trench to ensure proper safety. The excavation intervals for the first BHTs were approximately 1 foot (30 to 35 cm) but later some were increased to 2 (60 to 70 cm) feet given the negative artifact yields. Whenever a level interval was increased, ESA PCR sought approval from the Native American monitors. Each excavation interval was designated a level (e.g., Level 1, 2, 3, etc.) and the spoils for each level were placed in separate piles by the backhoe near the trench to be screened separately by the archaeologists. A sample (approximately 5 to 10 percent) of the excavated matrix (i.e., soil/sediment) were dry-screened through archaeological sorting screens with 1/8 hardwire mesh in order to identify individual artifacts. Matrix from the lower decomposing gravel/cobble stratum (Stratum IV) either underwent very limited screening or no screening at all given the low potential for these materials to retain archaeological resources. A larger sample of matrix would have been screened (if not all the matrix) if there was evidence of an artifact/ecofact concentration or feature. Soil samples were collected from each identifiable stratum in each trench.

The excavations were terminated soon after the gravel/cobble stratum (Stratum IV) was encountered. Stratum IV was encountered 5 feet below surface (ftbs) (or 150 centimeters below surface) in BHT 5 and 6.5 ftbs (200 cmbs) below surface in the other BHT units. Field forms were prepared to document excavation activities, including soil descriptions (using Munsell Color Chart), presence/absence of artifacts, and reason for termination of excavation. A sidewall profile of each BHT was also drawn to scale to document soil stratigraphy and photographs were taken throughout the testing effort.

Laboratory Methods A detailed methodology for the laboratory component was provided in the testing plan (see ESA PCR 2016).

Results 71.26 m3 of matrix was excavated from the BHTs. PCR screened 4.58 m3 of the BHT matrix, or 6.5% of the total BHT matrix volume.

The test excavation yielded eight modern or historic period artifacts and no prehistoric artifact, ecofacts, or features. One 3-inch-diameter steel pipe was encountered 10 inches (25 cm) below the surface along the southern end of BHT 4. The pipe had not been referenced on any maps provided to ESA PCR and had not been marked by DigAlert staff. It was oriented in an east-west alignment. The modern/historic period artifacts included small fragments of bottle glass and red brick fragments.


These items appear to be of recent or unknown age; however, given their lack of temporally diagnostic attributes, a true date of manufacture was not established for them. All of these items were found in the upper levels of BHTs 1 and 4 (surface to 1.5 ftbs/0.5 mbs). No other historic or prehistoric materials were recovered from the testing effort. Photographs of the test excavations are provided in Figures 2 through 5, BHT Excavation Photographs while the excavation results for the BHT units are summarized by trench in Table 1, BHT Excavation Summary Results.

TABLE 1 BHT EXCAVATION SUMMARY RESULTS

Unit Size (m) LxWxD

Volume Excavated/Screened (m3) Contents

Level (cmbs)

Reason for Termination

BHT 1 6.45x1x2.5 16.13/.80 4 glass fragments (C) 0-60 CS, SCS

BHT 2 6.75x1x2.3 15.53/1.24 None - CS, SCS

BHT 3 6.75x1x2.2 14.85/.92 None - CS, SCS

BHT 4 6.75x1x2.2 14.85/.82 4 brick frags (C) 0-30 CS, SCS

BHT 5 5.5x1x1.8 9.9/.8 None 0-30 CS, SCS

Key: C Collected H Compact Hardpan CS Culturally Sterile

SCS Sterile Cobble Stratum (Stratum IV) NC Not Collected cmbs centimeters below surface

As shown of Figures 6 through 10, BHT Stratigraphic Profiles, the soil stratigraphy in each trench can be classified into four distinct strata (Stratum I through Stratum IV). Stratum I sits immediately below the surface pavement and varies in thickness from 2 in to 6 in (5 cm to 20 cm). It is composed of a silty sandy clay with angular, subangular, and granular gravels (less than 0.5 cm in diameter) and its color is classified as brown, or 10 YR 5/3 on the Munsell Color Chart. It has been compacted by the road and the vehicle traffic that utilize it. Stratum II varies in thickness from 5 ft to 5.5 ft (160 to 180 cm) and is composed of loose silty sandy clay and is classified as yellowish brown, or 10 YR 5/4. Stratum III appears to be a thin (4 in /10 cm in thickness) transitional layer between Stratum II and IV with a higher density of gravels and cobbles.


Figure 2BHT Excavation Photographs

SOURCE: ESA PCR, 2016

PHOTOGRAPH 1. Overview of BHT 1 excavations, view south. PHOTOGRAPH 2. Close-up of Stratum IV in floor of BHT 1 (6 ftbs), view south.

PHOTOGRAPH 3. Close-up within BHT 2 (0 to 4 ftbs) showing Strata I and II, view south.

PHOTOGRAPH 4. Overview of BHT 2 excavations (Sheldon Reservoir in background), view southwest.

Pasadena Water and Power Non-Potable Water Project

Stratum IVStratum IV

Stratum IStratum I

Stratum IIStratum II



PHOTOGRAPH 5. Overview of BHT 2 (0 to 7.5 ftbs), view south.

PHOTOGRAPH 6. Close-up of cobbles and gravels from Stratum IV of BHT 2.

PHOTOGRAPH 7. Close-up of Stratum IV in west wall of BHT 2, view northwest.



Stratum IIIStratum III

Stratum IVStratum IV



PHOTOGRAPH 8. Overview of BHT 3 excavations, view south.

PHOTOGRAPH 9. Overview of spoils from BHT 3 excavations, view southwest.

PHOTOGRAPH 10. Close-up of east wall of BHT 3 showing Strata I and II (0 to 4 ftbs), view southeast.



Stratum IStratum I



PHOTOGRAPH 11. Overview of pipe encountered in south end of BHT 4, view south.

PHOTOGRAPH 12. Overview of BHT 4, view southwest.

PHOTOGRAPH 13. Overview of BHT 5 excavations showing Stratum IV in floor of unit, view south.

PHOTOGRAPH 14. Close-up of cobbles from Stratum IV of BHT 5.


S1

S2

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S4

Stratum I: 10 YR 5/3 brown; silty sandy clay with angular/sub angular/granular rock inclusions (

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Figure 7Stratigraphic Profile - BHT 2


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Stratum I: 10 yr 5/3 brown soil is silty sandy clay loam with angular/sub angular/granular rock inclusions (

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Stratum I: 10 yr 5/3 brown soil is silty sandy clay loam with angular/sub angular/granular rock inclusions (

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Stratum I: 10 yr 5/3 brown silty sandy clay loam with angular/sub angular/granular rock inclusions (

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Stratum I: 2.5 y 6/1 grey soil that differs completely from Trenches 1 through 4 in Strat I in hue and gravel contributing larger angular/sub angular/rounded/sub rounded inclusions (

Stratum IV was the deepest stratum identified and its true thickness was not determined since all five BHTs were terminated shortly after it was encountered. This stratum continued through the bottom of each trench. Stratum IV is characterized by its high density of decomposed subangular and subrounded granite gravels and cobbles that varied in diameter from 1 in to 8 in (2 cm to 24 cm).

ESA PCR believes that this stratum would have been too distinct and noteworthy to have not been mentioned in Walkers 1938 field notes on CA-LAN-26. Therefore, since it was not mentioned in his notes, it is likely that Walker did not encounter this stratum during his excavations of the burials nearby. This would be consistent which the depths by which Walker encountered the burials at - an upper level at 2.5 feet (0.75 m) and a lower level at 4 feet (1.3 m) below the surface. Given the low potential to find archaeological resources in the cobble stratum (Stratum IV) and since Walker did not mention it in his report or field notes, ESA PCR is confident in our decision to terminate each BHT unit soon after this stratum was encountered. Furthermore, as discussed earlier, geologic mapping of the area indicates the surface area around Sheldon Reservoir consists of alluvial fan gravel and sand dating to the Pleistocene, which lasted from about 2,588,000 to 11,700 years ago. These sediments are primarily derived from erosion of the surrounding mountains. Given the reservoirs proximity to the Arroyo Seco, it is likely that the area has been heavily impacted by changes of the rivers course over time, as well as by flood events. Large flood events can occur on decadal or centennial scales, the most recent of which in the Pasadena area occurred in 1938. Trenches excavated around the western edge of the reservoir during the archaeological trenching cut through 1 to 2 meters of sediment, revealing fine-grained sands consistent with alluvial sediments for most of the depth with a layer of matrix-supported, poorly sorted sand, pebble, and cobble sediment at the base of the trenches. Cobbles in this layer are composed of granite, and ranged from sub-angular to sub-rounded, which is consistent with erosional deposits from a fairly close source, such as the Verdugo Mountains, which are primarily granite. This is consistent with the mapped geology, as cobble beds are common components of alluvial fans, particularly close to the source of the deposits. As such, is likely that the sediments and stratigraphy found within each trench represent a flood event during the Pleistocene and that the burials at CA-LAN-26 were interred within these alluvial soils sometime after the event.

The notes, photographs, and/or daily logs of the three Native American monitors are provided in Appendix B of this report.


Conclusion No prehistoric archaeological resources were encountered during the testing and; therefore, it does not appear that CA-LAN-26 extends into the Study Area. ESA PCR believes that this testing effort constitutes a good faith effort to identify resources pursuant to 800.4(b) in this particular location of the APE.


References Cited Dibblee, T.W., and Ehrenspeck, H.E. 1989 Geologic map of the Pasadena quadrangle, Los Angeles County, California.

Dibblee Foundation Map DF-23. Scale 1: 24,000.

ESA PCR 2016 Pasadena Non-Potable Water Project, Los Angeles County, California,

Archaeological Testing Plan for Resource CA-LAN-26. Report on file at ESA PCR, 2121 Alton Pkwy., Suite 100, Irvine, CA 92606.

Krumbein, W. C. 1941 Flood deposits of Arroyo Seco, Los Angeles County, California. GSA

Bulletin 53: 1355-1402

NETR Online 2016 Historic aerial photographs from 1952, and 1964. Accessed online, June

2016, www.historicaerials.com.

RMC 2016 Sheldon Reservoir, Previous Disturbances, Draft Technical Memorandum.

Report on file at ESA PCR, 2121 Alton Pkwy., Suite 100, Irvine, CA 92606.

Walker Edwin 1952 Five Prehistoric Archaeological Sites in Los Angeles County, California: A

Cemetery at the Sheldon Reservoir Site in Pasadena.(70-79). Southwest Museum, Los Angeles, California.


Appendix A RMC Technical Memo: Previous Disturbances at Sheldon Reservoir

May 2016 1

DRAFT Technical Memorandum Pasadena Non-Potable Water Project

Subject: Sheldon Reservoir, Previous Disturbances

Prepared For: Roumiana Voutchkova

Prepared by: Rich Bichette, P.E.

Reviewed by: Rosalyn Prickett, AICP

Date: May 25, 2016

Reference: 0129-003.05

1 Background and Purpose The purpose of this Technical Memorandum (TM) is to summarize prior ground disturbances at the proposed Sheldon Non-Potable Water Reservoir site, located north of the existing Sheldon Potable Water Reservoir, in order to address the concerns expressed in the e-mail of the Archeologist, Gary Scholze, from the State Water Resources Control Board, Division of Financial Assistance, dated April 29, 2016, regarding the consultation with the State Historic Preservation Office to meet CEQA Plus requirements prior to obtaining State funding for construction of Phase 1.

In 1938, one prehistoric Native American burial site (CA-LAN-26) was discovered in Pasadena during the excavation of the existing Sheldon Potable Water Reservoir. The site was later excavated and declared by E. F. Walker, research associate of the Southwest Museum, to be relic of the Gabrillino Indians. Southwest Museum collected the human remains and associated artifacts in salvage excavations and placed them on display. The burial was encountered at depths of 2.5 to 4 feet below the surface, and contained 2 cremations, 53 burials, and accompanying grave goods, including bowls, scrapers, arrowpoints. The remains were found in an approximately 90-by-40 foot area.

After the remains were removed, construction of the potable reservoir, water and sewer pipes, buildings, and access road were completed. Since construction of the potable reservoir was completed, the soil north of the reservoir was disturbed on several occasions.

2 Summary of Findings The following is a summary of prior excavations near the Sheldon Non-Potable Water Reservoir site in the area north of the existing Sheldon Potable Reservoir, based on record information from 1920s to present. The location of the facilities summarized below are shown on Exhibit A, along with the Targets of Interest identified in the Cultural Resources Assesmsent (Appendix F of the Pasadena Non-Potable Water Project Draft Environmental Impact Report) and the proposed Phase I Sheldon Non-Potable Reservoir and associated piping and appurtenances.

Sheldon Well In 1921, a 18-inch diameter well casing was installed approximately 38 feet southeast of the southeast corner of the proposed reservoir to a depth of approximately 200 feet based on well as-built drawings (see Exhibit B).

Pasadena Non-Potable Water Project Sheldon Reservoir Site, Previous Disturbances DRAFT

May 2016 2

4-inch Diameter Sewer Main In 1938, a 4-inch diameter sewer main was installed approximately 13 feet south of the proposed reservoir. It estimated that the depth of excavation for this pipeline was approximately 3 feet based on the flowline depth of the sewer on as-built drawings (see Exhibit C), including depth of the pipeline and bedding under the pipe.

4-inch Diameter Water Main In 1938, a 4-inch diameter water main was installed approximately 22 feet south of the proposed reservoir. It is estimated that the depth of excavation for this pipeline was approximately 3 feet based on the depth of cover (30 inches) shown on as-built drawings (see Exhibit C), plus the depth of bedding under the pipe.

Annual Excavations for Competency Trenching and Shoring Training Between 2000 and 2010, Pasadena water system construction staff conducted their mandatory annual confined space, trenching, and shoring training at the Sheldon Potable Water Reservoir site (Exhibit D). Every year, the trainees dug a trench approximately 6 feet deep, 4 feet wide, and 8 feet long. The trenches were dug north of the existing Sheldon Potable Water Reservoir between the existing potable and the proposed non-potable reservoir sites.

Geotechnical Boring In 2012, as part of the Pasadena Non-Potable Water Project, the design teams geotechnical engineer drilled an 8-inch diameter hollow stem boring within the proposed reservoir footprint to a depth of 35.75 feet below grade (see Exhibit E). The log of the boring indicates that the first 6 feet of soil was previously compacted and consists of silty sand, while the remaining 30 feet of soil was apparently non-disturbed and consists of poorly graded sand, gravel, and silt.

20-inch Diameter Water Main In 1938, a 20-inch diameter water main was installed approximately 90 feet southeast of the southeast corner of the proposed reservoir. It is estimated that the depth of excavation for this pipeline was approximately 7 feet based on the invert elevation shown on as-built drawings (see Exhibit C), plus the depth of bedding under the pipe.

Existing Chlorine Building and Control Building Two existing buildings, a chlorine storage building and a control building, were installed approximately 22 feet and 47 feet, respectively, southeast of the southeast corner of the proposed non-potable reservoir. No record drawings were available for these buildings; however, typical excavation for footings to accommodate buildings of this nature would extend between 2 and 4 feet below grade.

SHELDON RECYCLED WATER RESERVOIR NO. 1

YARD PIPING PLAN

C-3

AS SHOWN

K. Erickson

J. May

M. Matson

37

Recycled Water Project - Phase I

REV.

SCALE: SHEET OFDATE:

102

WORK ORDER FILE-NUMBER

May 2014

0Dwg No:

Drawn by:

Designed by:

REV DATEDESCRIPTION

Water Division

Pasadena Water and Power

City of Pasadena

Checked by:

E-173702263

RBichetteCallout4" W (3' Deep), See Exhibit C

RBichetteCallout4" SS (3' Deep)See Exhibit C

RBichetteCallout20" W (7' Deep) Exhibit C

RBichetteCalloutSHELDON WELL (200' DEEP)See Exhibit B

RBichetteCalloutGEOTECHNICAL BORING (35.75' DEEP)See Exhibit E

RBichetteCalloutTOI 1 and 2

RBichetteLine

RBichetteLine

RBichetteCalloutBUILDINGS (Est. 2-4' depth disturbed for foundations)

RBichetteLine

RBichetteText BoxExhibit A - Sheldon RW Reservoir Site Plan and Previous Disturbances

Exhibit C - Sheldon Well As-Built and Bore LogExhibit B - Sheldon Well As-Built and Bore Log

Exhibit E - Sheldon Reservoir As-Built (20" Water)

20" W. See next page for depth

Exhibit E - As-Built Sheldon Reservoir - 20" Water PipelineExhibit C - As-Built Sheldon Reservoir - 20" Water Pipeline

Exhibit E - Sheldon Reservoir As-Built (20" Water)

20" W

Exhibit C - As-Built Sheldon Reservoir - 20" Water Pipeline

Exhbit B - Sheldon Reservoir As-Built (4" Water and 4" Sewer)

Ex. 4" W

Ex. 4" SS

Exhibit C - Sheldon Reservoir As-Built (4" Water and 4" Sewer Pipelines)

PASADENA WATER AND POWER

M E M O R A N D U M

Tuesday, March 28, 2006

To: Jeff Shepperd

From: David Jones

Subject: Trenching and Shoring Training Roster

The following 28 employees attended the competent person, Trenching and Shoring training given by James Cambell of Frontline Safety. Classroom/Sheldon Reservoir. It was a 4 hour coarse.

ALLEN, Aleta PULLIAM, JelaniANDERSON, David RIVAS, Marco ARCE, Robert SINCLAIR, CeithBELL, Aldis SYVERSON, AnthonyBROWN, Carey THOMPKINS, EddieCORDODA, Joseph THOMPSON, DarrylDE LA TORRE, Felix TOLLIVER, BobbyDIVIZIA, Frank WELLS, DennisESPINOZA, Steve WIGGINS, Michael GALLEGOS, AlfredGONZALEZ, GilbertoGRAHAM, IvoryHERNANDEZ, ManuelJONES, David M.JUDWARE, HerbieLAFFIN, JamesMARTINEZ, JesusMATTHEWS, FrankNAVARRETE, Arturo

311 W. Mountain Street, Pasadena CA 91103

RVoutchkovaText BoxExhibit D - Pasadena Competency Trenching and Shoring Training

RVoutchkovaHighlight



1

Voutchkova, Roumiana

From: Jones, David

Sent: Friday, May 06, 2016 7:38 AM

To: Voutchkova, Roumiana

Subject: FW: Approximate dig dates up at Sheldon Resrvoir, Winsor Ave

Attachments: Trenching and Shoring Roster 3-28-06.pdf

Hi Roumiana Here are Pasadena Fire Dept records showing one of the times we dug for them and I attached a roster of one of the times Water did it. Were T or L shaped with each leg 8 long, 3 to 4 wide 6 deep. Hope this hwelps David M. Jones

(626) 744-3886) office (626) 905-6252 cell (626) 396-7646 fax [email protected] From: Watson, David

Sent: Thursday, May 05, 2016 4:26 PM

To: Jones, David Subject: RE: Approximate dig dates up at Sheldon Resrvoir, Winsor Ave




2

Hi David, I found some training that was in 2001. I will check with some other members to see if they might have something with more details. We use our Outlook Calendar exclusively to list all Training. David Watson, Battalion Chief Operations Div. A-Shift Pasadena Fire Department 1360 E. Del Mar Bl Pasadena CA. 91106 Office 626.744.4652 Cell 626.625.9228 [email protected] CONFIDENTIALITY NOTICE: This email is covered by the Electronic Communications Privacy Act, 18 U. S. C. 2510-2521 and is legally privileged. This electronic message transmission, which includes any files transmitted with it, may contain confidential or privileged information and is only intended for the individual or entity named above. If you are not the intended recipient of this email, please be aware that you have received this email in error and any disclosure, copying, distribution or use of the contents of this information is strictly prohibited. If you have received this email in error, please immediately purge it and all attachments and notify me immediately by electronic mail.


RVoutchkovaCalloutConfined Space, Trenching and Shoring Training at Sheldon reservoir in 2001



1

2

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4

5

S%

6

7

8

9

DS

108.2

108.5

1.8

2.6

POORLY GRADED GRAVEL with SILT and SAND(GP-GM): continued

light brown (7.5YR 6/4), coarsens

coarse gravel/cobble

@25.25' cobble ~3"

50/6"

41

50

41

50/5"

21

50/4"

MATERIAL DESCRIPTION

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Page 2 of 3Project No. 14921.000.0

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SAMPLES

DensityDry

LABORATORY TESTS

OtherTests

Sam

ple

(fee

t)

(fee

t)

Blo

ws/

(pcf)

MoistureContent

(%)

PROJECT: RECYCLED WATER PROJECTGlendale and Pasadena, California

Sam

ple

No.

Log of Boring No. B-24(cont'd)

GE

O3

PID

6IN

CH

V3

6-in

ch

Max

imum

Pre

ssur

e(p

si)

Exhibit D - Bore #24 LogExhibit E - Log of Boring No. B-24

10

POORLY GRADED GRAVEL with SILT and SAND(GP-GM): continued

POORLY GRADED SAND (SP): light olive brown (2.5Y5/4), moist, ~95% fine to medium sand, ~5% fines, coarsegravel at shoe

Bottom of boring at 35.75' bgs. Groundwater notencountered at time of drilling. Refer to Appendix A fordescription of backfill.

27

50/3"

MATERIAL DESCRIPTION

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Page 3 of 3Project No. 14921.000.0

ELE

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DensityDry

LABORATORY TESTS

OtherTests

Sam

ple

(fee

t)

(fee

t)

Blo

ws/

(pcf)

MoistureContent

(%)

PROJECT: RECYCLED WATER PROJECTGlendale and Pasadena, California

Sam

ple

No.

Log of Boring No. B-24(cont'd)

GE

O3

PID

6IN

CH

V3

6-in

ch

Max

imum

Pre

ssur

e(p

si)

Exhibit D - Bore #24 LogExhibit E - Log of Boring No. B-24

Appendix B Native American Monitor Notes and Photographs

Figure 1Native American Monitor Testing Photographs (Dorame)

SOURCE: Robert Dorame, 2016Pasadena Non-Potable Water Project

1

Kyle Garcia

From: Sara DietlerSent: Monday, October 10, 2016 5:43 PMTo: [email protected]: Kyle GarciaSubject: RE: Sheldon Reservoir

HiAdrian,Sorryaboutthat,wedidnthaveaspecificformforthisone.Theemailworkstoo!Thanks!Sara DietlerSenior Cultural Resources SpecialistESA | Cultural Resources213.542.6053 direct | 213.309.9240 cellFrom: Adrian Morales [mailto:[email protected]] Sent: Monday, October 10, 2016 5:35 PM To: Sara Dietler Cc: Kyle Garcia Subject: Re: Sheldon Reservoir Good afternoon Sara, I was under the assumption that you were going to provide a specific EAS Native American Daily report for me to fill out. Unfortunately I'll be away from my desktop files for a few days to access my tribal DARs to fill out and send back to you. I'm hoping this email with my daily accounts would be sufficient. August 24, 2016 Sheldon Reservoir, Pasadena, CA CA LAN - 26 EAS/PCR inc Monitored Mechanical Test Trench excavations : MTT no. 1- No cultural resources to document within the trench dimensions. Dimension : 3ft W, 10ft L, 6.5-7ft D Notes : One backhoe machine used, random sample dry screening (1/8th mesh), trench wall profiling. MTT no.2 - No cultural resources to document within the trench dimension Dimension : 3ft W, 10ft L, 7ft D Notes : One backhoe machine used, random sample dry screening (1/8th mesh), trench wall profiling. August 25, 2016 Sheldon Reservoir, Pasadena, CA CA LAN -26 EAS/PCR Inc. Monitored Mechanical Test Trench Excavations : MTT no. 3 - No cultural resources to document within the trench dimensions. Dimension : 3ft W, 10ft L, 7ft D Notes : One backhoe machine used, random sample dry screening, trench wall profiling

2

MTT no. 4 - No cultural resources to document within the trench dimensions Dimensions: 3ft W, 10ft L, 6.5ft D Notes: One backhoe machine used, random sample dry screening ( 1/8th mesh), trench wall profiling MTT no. 5 - No cultural resources to document within the trench Dimensions Dimensions: 3ft W, 10ft L, 6ft Notes : one backhoe machine used, random sample dry screening ( 1/8th mesh), trench wall profiling. August 26, 2016 Sheldon Reservoir, Pasadena, CA CA LAN - 26 EAS / PCR Inc Monitored Mechanical Test Trench Excavations: No excavations occurred today due to placement location technicalities. Sent from Yahoo Mail on Android On Mon, Oct 10, 2016 at 12:36 PM, Sara Dietler wrote:

Hi Adrian,

I am checking back on your monitoring logs for the Sheldon work Aug. 24, 25, and 26th. We need a copy for each day to include with the report and need to turn this in to them today. Thanks so much!

Sara Dietler

Senior Cultural Resources Specialist

ESA | Cultural Resources

626 Wilshire Boulevard, Suite 1100

Los Angeles, CA 90017

213.542.6053 direct | 213.599.4300 main | 213.599.4301 fax | 213.309.9240 cell

[email protected] | www.esassoc.com

Follow us on Facebook | Twitter | LinkedIn

Pasadena Non-Potable Water Project

Figure 1Native American Monitor Testing Photographs (Salas)

SOURCE: Armando Campos/Andy Salas, 2016

Results of Archaeological Testing at the Sheldon Non-Potable Water Reservoir in the Vicinity of CA-LAN-26Pasadena Non-Potable Water ProjectArchaeological Testing Results at the Sheldon Non-Potable Water Reservoir in the Vicinity of CA-LAN-26Executive SummaryIntroductionProposed Project and LocationProject BackgroundProject PersonnelSetting and ContextProject GeologyResource CA-LAN-26Previous Disturbances to the Testing Plan Area

Research GoalsMethodsFieldwork MethodsLaboratory Methods

ResultsConclusionReferences Cited

Appendix A - RMC Tech Memo.pdfExhibit D Trenching and Shoring.pdfMEMORANDUMTuesday, March 28, 2006311 W. Mountain Street, Pasadena CA 91103

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