Laserfiche WebLink
*:/ : 11-1 h WA <br />e) Have soils incapable of adequately supporting the use of septic tanks or alternative waste water <br />disposal systems where sewers are not available for the disposal of waste water? <br />No Impact. Development of the proposed project would not require the installation of a septic tank or <br />alternative wastewater disposal system. Therefore, no impacts would result from septic tank or other on site <br />wastewater disposal systems. <br />I) Directly or indirectly destroy a unique paleontological resource or site or unique geologic feature? <br />Less Than Significant Impact With Mitigation Incorporated. A paleontological records search for the two <br />replacement park sites was performed by the Natural History Museum of Los Angeles County, Vertebrate <br />Paleontology Section, in May 2018 (included as Appendix B to the IS). The records search indicated that there <br />are no vertebrate fossil localities that lie within the project site boundaries. However, localities have been <br />identified nearby in the same sedimentary units that are in the project area. <br />Surface sediments throughout the project area consists of younger terrestrial Quaternary Alluvium, derived <br />primarily as alluvial fan deposits from hills of the Santa Ana Mountains to the east. These younger Quaternary <br />deposits typically do not contain significant vertebrate fossils in the upper layers, however, underlain older <br />quaternary deposits at varying depths may contain vertebrate fossils. Therefore, grading or shallow excavations <br />in the upper few feet of the younger quaternary alluvial sediments would not result in any impacts to <br />paleontological resources. However, if the grading extends beyond top layers into the older quaternary terrace <br />deposits, then there is a potential for discovery of vertebrate fossils. Both replacement park sites have been <br />previously developed and are anticipated to be covered by fill soils, underlain aby younger quaternary deposits. <br />The proposed project would not require extensive excavation that could potentially disturb older quaternary <br />deposits. However, if any grading of excavation activities has the potential to disturb older quaternary deposits, <br />Therefore, any construction activities that could potentially affect the underlain older quaternary deposits would <br />be monitored by a qualified paleontologist to ensure that impacts are less than significant. Therefore, the <br />proposed project would not directly or indirectly destroy a unique paleontological resource of site or unique <br />geologic feature. <br />Mitigation Measure <br />GEO-1 In the event that soil disturbance is expected in the older quaternary deposits per the site - <br />specific geotechnical report, a qualified paleontologist shall be retained prior to excavation <br />activities and excavation activities in the older quaternary deposits shall be closely monitored. <br />If any are found, work in the immediate area shall halt and the specimen and sediment samples <br />shall be collected and evaluated. Any fossils recovered shall be processed per the <br />recommendation of the on -site paleontologist and deposited in an accredited scientific <br />institution. <br />3.7 GREENHOUSE GAS EMISSIONS <br />Scientists have concluded that human activities are contributing to global climate change by adding large <br />amounts of heattrappinggases, known as greenhouse gases (GHGs), into the atmosphere. The primary source <br />75C-92 <br />