PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 12 - 0 0 33 / 3 0 0 4)
CITY OF TEMECULA
RIVERSIDE COUNTY, CALIFORNIA
August 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 12 - 0 0 33 / 3 0 0 4)
CITY OF TEMECULA
RIVERSIDE COUNTY, CALIFORNIA
Prepared for:
City of Temecula
Attn: Stuart Fisk
41000 Main Street
Temecula, California 92590
Prepared by:
Brooks Smith and Frederick W Lange
LSA Associates, Inc.
1500 Iowa Avenue, Suite 200
Riverside, California 92507
LSA Project No. TMU1201
August 2012
LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 1 2 - 0 0 3 3 / 3 0 0 4 )
TEMECULA, CALIFORNIA
TABLE OF CONTENTS
MANAGEMENT SUMMARY.............................................................................................................. 2
INTRODUCTION .................................................................................................................................. 2
Purpose of Investigation .................................................................................................................. 2
Project Location and Description..................................................................................................... 2
NATURAL SETTING ...................................................... ERROR! BOOKMARK NOT DEFINED.
Biology............................................................................................ Error! Bookmark not defined.
GEOLOGY AND PALEONTOLOGY .................................................................................................. 4
Geologic Setting .............................................................................................................................. 4
Geology ............................................................................................................................................ 4
Paleontological Setting .................................................................................................................... 7
Paleontology ................................................................................... Error! Bookmark not defined.
PERSONNEL ......................................................................................................................................... 7
METHODS............................................................................................................................................. 8
RESULTS.......................................................................... ERROR! BOOKMARK NOT DEFINED.
PALEONTOLOGICAL RESOURCE RECOMMENDATIONSERROR! BOOKMARK NOT DEFINED.
Paleontological Resource Impact Mitigation Program ...................Error! Bookmark not defined.
BIBLIOGRAPHY ................................................................................................................................ 11
FIGURES
Figure 1: Project Vicinity and Location ................................................................................................. 3
Figure 2: Geology Map .......................................................................................................................... 6
Figure 3: Project Views .......................................................................................................................... 9
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 1 2 - 0 0 3 3 / 3 0 0 4 )
TEMECULA, CALIFORNIA
MANAGEMENT SUMMARY
LSA Associates, Inc. (LSA) was retained by the City of Temecula to conduct a paleontological
resources assessment of the 5DQFKR9LVWD9LOODJH Project (PA12-0033/3004) in the City of
Temecula, Riverside County, California. A paleontological locality search and literature review was
conducted for the subject property in July 2012 and an archaeological and paleontological field survey
of the project site was subsequently completed that same month. The field assessment was completed
pursuant to the California Environmental Quality Act (CEQA).
The paleontological locality search indicates that the Pauba Formation underlies the parcel and has a
high potential to contain significant, nonrenewable paleontological resources. The field survey
confirmed the presence of sediments consistent with the description of the Pauba Formation.
Construction excavation may adversely affect these resources and, consequently, a paleontological
resource mitigation and monitoring plan (PRMMP) is recommended.
INTRODUCTION
LSA was retained by the City of Temecula to conduct a paleontological resources study to assess the
environmental effects of the proposed development of the Rancho Vista Village project at the
northeast corner of the intersection of Rancho Vista Road and Mira Loma Road (Figure 1). In July
2012, LSA requested a paleontological locality search and literature review from the Division of
Geological Sciences at the San Bernardino County Museum (SBCM). A field assessment for the parcel
was completed the same month.
Purpose of Investigation
The paleontological resources assessment was conducted according to CEQA, Public Resources Code
(13 PRC) 2100, (14 CAC) 15000, Appendix G, Section J, (PRC) 2100-21177, Appendix G, (PRC)
5097.5. The paleontological resources assessment was conducted to evaluate the potential existence of
resources that would require a preparation of a PRMMP that would reduce impacts to a level less than
significant.
Project Location and Description
The project is located within the unsectioned southeastern quadrant of Section 1 (projected) of
Township 8 South, Range 3 West, San Bernardino Baseline and Meridian, as shown on the U.S.
Geological Survey (USGS) Temecula, California (1975) and Murrieta, California (1979) 7.5-minute
topographic quadrangles (USGS, photorevised 1979). The surface of the parcel has been disturbed by
school construction, dumping and weed abatement activities.
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 1 2 - 0 0 3 3 / 3 0 0 4
TEMECULA, CALIFORNIA
Figure 1: Project Vicinity and Location
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 1 2 - 0 0 3 3 / 3 0 0 4
TEMECULA, CALIFORNIA
GEOLOGY AND PALEONTOLOGY
Paleontological resources, or fossils, are the remains (such as bones, teeth, shells, leaves, or wood) and/
or traces (such as tracks or burrows) of prehistoric life. Generally, for something to be considered a
fossil it must be at least 10,000 years old, although the Society for Vertebrate Paleontology (SVP; 1995,
2010) sometimes considers anything more than 5,000 years old to be a fossil. Fossils provide evidence
of ancient organisms and can document the patterns of organic evolution and extinction. In California,
impacts to paleontological resources are addressed through the environmental review process pursuant
to CEQA. In order to determine whether paleontological resources will be affected, geologic maps are
examined, and research is undertaken to determine if paleontological resources have been found in the
same or similar sediments to those that outcrop within the project area.
Geologic Setting
The Rancho Vista Village Project is located within the northern end of the Peninsular Range Province
of Southern California (California Geological Survey, 2002). The Peninsular Range Geomorphic
Province is a 900-mile (mi) long northwest-southeast-trending structural block that extends from the tip
of Baja California to the Transverse Ranges and includes the Los Angeles Basin (Norris and Webb,
1976). The total width of the province is approximately 225 mi, with a maximum landbound width of
65 mi (Sharp, 1976). It contains extensive pre-Cretaceous (> 65 million years ago) igneous and
metamorphic rocks covered by limited exposures of post-Cretaceous sedimentary deposits. Belyea and
Minch (1989) report that the Santa Ana Mountains contain exposures of the most complete section of
Late Mesozoic and Cenozoic (approximately 150 million years ago to the present) stratigraphy in the
entire Peninsular Ranges.
The project is located on the western boundary of the Perris Block in an area known as the Elsinore
Trough. The Elsinore Trough contains exposures of the very fossiliferous Pauba Formation and the
Unnamed Sandstone (Kennedy, 1977). These sediments range in age from Pliocene (4 million years) to
mid-Pleistocene (300,000 years). The Unnamed Sandstone has produced vertebrate fossils in Murrieta
that suggest a time range spanning the Pliocene period (4 million to 2 million years). The Pauba
Formation contains Pleistocene fossils, but none from the Rancholabrean Land North American Land
Mammal Age (NALMA) (200,000 to ~10,000 years ago). Since the Pauba Formation contains the
Bishop Ash (758,000 years), it at least spans the period between 240,000 and 800,000 years. Late
Pleistocene alluvium post-dates the Pauba Formation and correlates with sediments found in northern
Murrieta, French Valley, and the Diamond Valley Reservoir near Hemet, which have been dated at
around 150,000 to 41,500 years based on fossil remains and radiometric dating techniques (Reynolds
and Reynolds, 1991; Reynolds, 2001, 2002a, 2002b, 2004; and Springer and others, 1999).
Figure 2 depicts the geology of the project and surrounding area as mapped by Morton and Kennedy
(2003) and a brief description of the geologic units that may be encountered within the project area is
provided below. It should be noted that the geology map does not include the limits of any artificial fill.
Geology
The Rancho Vista parcel is northeast of the Wildomar Fault Zone, with the Santa Ana Mountains on the
south and the Perris Plain to the northeast (Rogers, 1965). The parcels sit on sediments referred to as the
Pauba Formation that overlies Cretaceous gabbro (Mann, 1955; Kennedy, 1976; Reynolds and others,
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 1 2 - 0 0 3 3 / 3 0 0 4
TEMECULA, CALIFORNIA
1991). The higher ridge tops of the parcel appears to be capped by the Older Pleistocene Alluvium
(Mann, 1955; Kennedy, 1977; Reynolds and others, 1991).
Previous geologic mapping of the Murrieta region (Rogers, 1965, Kennedy, 1977, Kennedy and
Morton, 2003) indicates that the proposed project area is located upon surface exposures of the
Sandstone Member of the Pauba Formation (unit Qpfs), incised by a thin veneer of Holocene or recent
alluvium (Qya). The Holocene alluvium is geologically too young to have potential to contain
significant fossils and so is assigned low paleontological sensitivity. In contrast, the Sandstone Member
of the Pauba Formation is highly fossiliferous throughout its areal exposure, and is therefore assigned a
high paleontological sensitivity. Vertebrate fossils recovered from the Sandstone Member of this
Formation include mammoths, mastodons, ground sloths, saber-toothed cats, tapirs, horses, camels,
and llamas, along with abundant small vertebrates and invertebrates (Reynolds and others, 1991; Pajak
and others, 1996). The fossiliferous Pauba Formation unconformably overlies the Temecula Arkose
and an Unnamed Sandstone and conglomerate formation, and has been dated (Mann, 1955; Pajak and
others, 1996) to the middle Pleistocene Epoch on the basis of its stratigraphic position and the
vertebrate fossils recovered from the Formation.
Pauba Formation. The Pauba Formation was named by Mann (1955) for exposures of in the Rancho
Pauba area approximately 2 mi southeast of Temecula. This formation was deposited during the Early
to Middle Pleistocene and consists of terrestrial alluvial stream deposits composed of interbedded
siltstone, sandstone, and conglomerate. The Pauba Formation date from late Irvingtonian and early
Rancholabrean ages (Morton and Kennedy, 2003), but the age of these sediments may be restricted to
being no younger than the Irvingtonian (see paleontology discussion below). The Pauba Formation
includes two informal members: an upper Sandstone Member consisting of brown, moderately
well-indurated, cross-bedded sandstone with sparse cobble to boulder conglomerate interbeds; and a
lower Fanglomerate Member (Qpf) consisting of grayish brown, well-indurated, poorly sorted
fanglomerate and mudstone. Only the upper sandstone member is exposed near the project and has a
possibility of being encountered during project-related excavation
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 1 2 - 0 0 3 3 / 3 0 0 4
TEMECULA, CALIFORNIA
Figure 2: Geology Map
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE ( P A 1 2 - 0 0 3 3 / 3 0 0 4
TEMECULA, CALIFORNIA
Paleontological Setting
The Elsinore Trough contains the very fossiliferous Pauba Formation and the Unnamed Sandstone
(Kennedy, 1977). These sediments range in age from Pliocene (4 million years) to mid-Pleistocene
(300,000 years). The Unnamed Sandstone has produced vertebrate fossils in the Temecula area that
suggest a time range spanning the Pliocene period (4 million to 2 million years). The Pauba Formation
contains Pleistocene fossils, but none that represent the Rancholabrean NALMA (less than 300,000
years). Since the Pauba Formation contains the Bishop Ash (758,000 years), it at least spans the period
between 200,000 and 800,000 years, and the fossil mammals that it contains represent the Irvingtonian
NALMA.
The literature review indicated that more than 400 paleontological localities are known from the Pauba
Formation and the Unnamed Sandstone in the vicinity of Temecula (Reynolds and others, 1991), 10 of
which are situated within 1-mile of the Rancho Vista project. Large fossil mammals known from the area
include horse, camel, deer, ground sloth, bear, coyote, mastodon, and mammoth. Small fossils include
birds, reptiles, amphibians, fish, and mollusks, as well as a large number of species of rodents that assist
in providing temporal constraints for deposition of the sediments (Reynolds and others, 1991). A list of
67 taxa including large and small fossil species has been presented in several summaries (Golz and
others, 1977; Reynolds and others, 1991; Reynolds and Reynolds, 1991).
The fossil taxa from the Unnamed Sandstone include certain species restricted to the Blancan NALMA.
These include the extinct rodents Mimomys parvus, a vole; Paraneotoma fossilis, a woodrat; and
Sigmodon spp., two species of cotton rat.
The mammalian fossils from the Pauba Formation (spanning >200,000B800,000 years) includes
species of mammoth, the indicator fossil for the Pleistocene period, but not the remains of bison, the
indicator species for the latest Pleistocene Rancholabrean NALMA. The Pauba Formation also
includes fossils of mastodon, the woodrat Neotoma (Paraneotoma, and the cricetid Sigmodon are
absent), and the vole Microtus californicus (Mimmomys is absent), suggesting a Irvingtonian NALMA
for the deposition of these sediments in the Elsinore trough.
The Older Pleistocene Alluvium on the parcel sits unconformably on, and thus post-dates the
mid-Pleistocene Pauba Formations. It possibly correlates with the fossiliferous sediments found in
French Valley (Reynolds, 2001, 2002) and at the Diamond Valley Reservoir near Hemet (Springer and
others, 1999), since these late Pleistocene sediments are at elevations of approximately 1,300 feet or
higher. In addition to the wealth of fossils recovered at Diamond Valley, the sediments are known to
contain bison, the Rancholabrean NALMA indicator, and have also been dated at 40,000 years
(Springer and others, 1999). The Late Pleistocene sediments in French Valley contain antelope, horse,
llama, and deer. The presence of these herbivores, as well as rabbit, woodrat, kangaroo rat, and toad,
suggest that the available habitat was mixed grassland, parkland, and dense scrub or chaparral around a
marshland.
PERSONNEL
Brooks Smith, LSA project manager, conducted the paleontological resource literature review and
assisted with report writing. Dr. Frederick Lange conducted the field survey and confirmed the
sediments mapped by Kennedy and Morton (2003) and assisted in the preparation of the report.
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE(PA12-0033/3004
TEMECULA, CALIFORNIA
METHODS
The paleontological resources literature review was conducted using available references to identify
sedimentary formations with paleontological resource sensitivity and fossil localities within the
vicinity of the project parcels in the Elsinore Trough of southwestern Riverside County.
The intensive foot-survey of the project for cultural and paleontological resources was conducted in
July 2012. The survey was conducted by walking parallel transects spaced approximately 10 meters
apart. Soil profiles were examined for cultural and paleontological stratigraphy and rodent back dirt
was checked for cultural and fossil remains. Figure 3 contains photographs of the project site.
RESULTS
Mr. Eric Scott, Curator of Paleontology in the Division of Geological Sciences at the SBCM, conducted
a search of the Regional Paleontologic Locality Inventory (RPLI) housed at the SBCM. The locality
search indicated that more than 400 paleontological resource localities are known from fossiliferous
sediments in the Temecula area (Reynolds and others, 1991). Vertebrate fossils from the Elsinore
trough have been used to determine the Pliocene age of the Temecula Arkose, the Unnamed Sandstone,
and the Pleistocene age of the Pauba Formation (Mann, 1955; Kennedy, 1977; Reynolds and others,
1991). Large fossil mammals known from the area include horse, camel, sloth, and mammoth. A list of
67 taxa including large and small fossil species has been presented in several summaries (Golz and
others, 1977; Reynolds and others, 1991; Reynolds and Reynolds 1991).
Mr. Scott indicated that the results of the record search indicated that no previously-known
paleontologic localities are recorded within the boundaries of the proposed project property. He did
note, however, that 7 resource localities (SBCM 5.6.94 to 5.6.100) are recorded from within ¼ mile to
the north of the proposed project area. He noted that these localities were recorded from surface and
subsurface exposures of the Sandstone Member of the Pauba Formation. Additionally, localities SBCM
5.6.209 through 5.6.211 are situated approximately 1 mile to the northeast of the proposed project area.
All of these localities yielded significant nonrenewable paleontologic resources from surface and
subsurface sediments of the Sandstone Member of the Pauba Formation.
The project has been graded and has had stone fill materials deposited on it. Ground visibility was
approximately 20 percent with a cover of matted, dry grasses (Figures 3a and 3b). The area of a former
school on the northern end of the property was also inspected with negative results. No paleontological
resources were observed during the field survey, but the sediments observed within the parcel
confirmed the geology as mapped by Kennedy and Morton (2003).
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE(PA12-0033/3004
TEMECULA, CALIFORNIA
Figure 3: Project Views
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE(PA12-0033/3004
TEMECULA, CALIFORNIA
PALEONTOLOGICAL RESOURCE RECOMMENDATIONS
The abundance of fossils from the proposed project area, as well as from the other 400 fossil localities
mapped from the Pauba Formation, demonstrate the high paleontological sensitivity of the region. The
presence of sediments suitable to contain paleontological resources and the positive results of the
literature review reinforce the high potential for encountering significant nonrenewable vertebrate
fossils on the proposed project. This study recommends that a PRMMP be included with construction
excavation. A PRMMP identifies paleontologically sensitive areas within the project area, the
organization and responsibilities of the monitors, procedures to be implemented if paleontological
resources are encountered during the project, the treatment (recovery, preparation, identification,
analysis and curation of any collected resources), and a compliance report. It is recommended that a
professional paleontologist be hired to oversee paleontological monitoring following a PRMMP. At a
minimum, the PRMMP should include:
•
A trained paleontological monitor will be present during ground-disturbing activities within the
project area in sediments determined likely to contain paleontological resources. The monitoring
for paleontological resources will be conducted on a full-time basis. The monitor will be
empowered to temporarily halt or redirect construction activities to ensure avoidance of adverse
impacts to paleontological resources. The monitor will be equipped to rapidly remove any large
fossil specimens encountered during excavation. During monitoring, samples will be collected and
processed to recover microvertebrate fossils. Processing will include wet screen washing and
microscopic examination of the residual materials to identify small vertebrate remains. The project
paleontologist may reevaluate the monitoring program after 50 percent of the excavation has been
completed.
•
Upon encountering a large deposit of bone, salvage of all bone in the area will be conducted with
additional field staff and in accordance with modern paleontological techniques.
•
All fossils collected during the project will be prepared to a reasonable point of identification.
Excess sediment or matrix will be removed from the specimens to reduce the bulk and cost of
storage. Itemized catalogs of all material collected and identified will be provided to the museum
repository along with the specimens.
•
A report documenting the results of the monitoring and salvage activities and the significance of the
fossils will be prepared.
•
All fossils collected during this work, along with the itemized inventory of these specimens, will be
deposited in a museum repository for permanent curation and storage.
Compliance with these recommendations will ensure that excavation impacts to the paleontological
resources are maintained below a level of significance.
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE(PA12-0033/3004
TEMECULA, CALIFORNIA
BIBLIOGRAPHY
Belyea, R.B., J.A. Minch
1989 Stratigraphy and Depositional Environments of the Sespe Formation, Northern Santa Ana
Mountains, California in Field Geology in Orange County, Southern California.
NAGT-FWS Field Guidebook, 1994.
Bortugno, E.J., and T.E. Spittler
1986 Geologic Map of the San Bernardino Quadrangle, California. 1:250,000. California Division
of Mines and Geology.
California Geological Survey
2002 California Geomorphic Provinces. California Geologic Survey Note 36. California
Department of Conservation.
County of Riverside
2008 General Plan of the County of Riverside. Available on-line at:
http://www.rctlma.org/genplan_general_plan_2008/general_plan_2008.aspx. Accessed
July 2012.
Golz, D. J., G.T. Jefferson, and M.P. Kennedy
1977 Late Pleistocene Vertebrate fossils from the Elsinore Fault Zone, California. J. Paleo.
51(4):864-866.
Jaeger, Edmund C., and Arthur C. Smith,
1971 Introduction to the Natural History of Southern California. California Natural History
Guides: 13. Los Angeles: University of California Press.
Kennedy, M.P.
1977 Recency and Character of Faulting along the Elsinore Fault Zone in Southern Riverside
County, California. California Division of Mines and Geology Special Report 131, 12 pp.
Kenney, Miles D.
1999 Emplacement, Offset History, and Recent Uplift of Basement within the San Andreas Fault
System, Northeastern San Gabriel Mountains; University of Oregon.
Mann, J.F.
1955 Geology of a portion of the Elsinore fault zone, California. California Division of Mines and
Geology Special Report 43, 22 pp.
Morton, D.M., and M.P. Kennedy
2003 Geologic Map of the Bachelor Mountain 7.5' Quadrangle, Riverside County, California.
Version 1.0. Geologic Mapping by D.M. Morton and M.P. Kennedy, digital preparation by
Kelly R. Bovard and Diane Burns. Prepared by the U.S. Geological Survey, Menlo Park,
California, in cooperation with the California Geological Survey. U.S. Geological Survey
Open File Report 03-103. Map Scale 1:24,000.
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE(PA12-0033/3004
TEMECULA, CALIFORNIA
Morton, Douglas, and Fred K. Miller
2006 Geologic Map of the San Bernardino and Santa Ana 30’ × 60’ Quadrangles, California.
Version 1.0. Digital Preparation by Pamela M. Cossette and Kelly R. Bovard. Prepared by
the United States Geologic Survey in Cooperation with the California Division of Mines and
Geology. Open File Report 2006−1217. Map Scale 1:100,000.
Norris, R.M., and R.W. Webb
1976 Geology of California, John Wiley and Sons, Inc., Santa Barbara.
Reynolds, Robert E.
2007 Paleontological Resources Assessment South Coast Winery Rancho California Riverside
County, California. Prepared for the South Coast Winery, Resort and Spa by LSA
Associates, Inc. LSA project number SGV0701. May 2007.
2004 Paleontological Resources Monitoring Program, Centex Homes Bella Vista Parcel,
Murrieta. LSA Associates, Inc. for Centex Homes, 11 p.
2002a Paleontological Resources Monitoring Program, Beaver Homes Butterfield III Tract. LSA
Associates, Inc. for Beazer Homes, 11 p.
2002b Paleontological Resources Monitoring Program, Beazer Homes Cliff Parcel, French Valley.
LSA Associates, Inc. for Beazer Homes, 11 p.
2001 Paleontological Resources Monitoring Program; Beazer Homes Butterfield Tract. LSA
Associates, Inc. for Beazer Homes, 10 p.
Reynolds, Robert E., and Robert L. Reynolds
1991 The Pleistocene Beneath our Feet: Near-surface Pleistocene Fossils from Inland Southern
California Basins. San Bernardino County Museum Association Quarterly V. 38(3 & 4), p.
41–43.
Reynolds, Robert E., Robert L. Reynolds, and A.F. Pajak III
1991 Blancan, Irvingtonian and Rancholabrean (?) Land Mammal Age Faunas from Western
Riverside County, California: San Bernardino County Museum Association Quarterly, v. 39,
p. 37–40.
Rogers, T.H.
1965 Geologic Map of California, Santa Ana Sheet. California Division of Mines and Geology,
Scale 1:250,000.
Sharp, R.P.
1976 Geology Field Guide to southern California, Kendall/Hunt Publishing Company; 2nd edition,
pp 181.
Society of Vertebrate Paleontology
2010 Standard Procedures for the Assessment and Mitigation of Adverse Impacts to
Paleontological Resources Society of Vertebrate Paleontology. Impact Mitigation
Guidelines Revision Committee. Pages 1–11.
1995 Assessment and Mitigation of Adverse Impacts to Nonrenewable Paleontologic Resources:
Standard Guidelines. Society of Vertebrate Paleontology News Bulletin, No. 163, January
1995: 22–27.
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LSA ASSOCIATES, INC.
AUGUST 2012
PALEONTOLOGICAL RESOURCES ASSESSMENT
RANCHO VISTA VILLAGE(PA12-0033/3004
TEMECULA, CALIFORNIA
Springer, Kathleen, E. Scott, C. Sagebiel, and K. Scott
1999 A late Pleistocene Lake-edge Vertebrate Assemblage from the Diamond Valley, Riverside
County, California. Abstract, Jour. Vert. Paleo. V. 19(3), p. 77A.
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