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<br />Soil Investigations for Data Collection in the Delta <br />Initial Study/Proposed Mitigated Negative Declaration 100 <br />Implementation of Mitigation Measures MM BIO-1b, MM BIO-18, and MM BIO-19 <br />would reduce potential impacts to crownscale to: Less than Significant with <br />Mitigation Incorporated. <br />Lost Hills crownscale (Atriplex coronata var. vallicola) <br />Lost Hills crownscale has a CRPR of 1B.2 but is not listed under FESA or CESA. <br />This species is an annual herb in the goosefoot family that blooms from April <br />through August (CNPS 2019). It is endemic to California, and its current range <br />includes the San Joaquin Valley (CNPS 2019; Jepson Flora Project 2019). It <br />typically grows in chenopod scrub, valley and foothill grassland, and vernal pool <br />habitats (CNPS 2019). The microhabitat for this species includes fine, alkaline <br />soils (CDFW 2019). Threats to this species include grazing, vehicles, agricultural <br />conversion, hydrological alterations, and energy development. Occurrences of <br />this species in Alameda County are thought to be misidentifications of A. <br />coronata var. coronata (R. Preston, pers. comm.). If correct, the Study Area is <br />outside the range of this species, however for the purposes of this evaluation, <br />this species will be treated as having a moderate potential to occur due to the <br />presence of potentially suitable habitat. <br />Implementation of Mitigation Measures MM BIO-1b, MM BIO-12, MM BIO-18, <br />and MM BIO-19 would reduce potential impacts to Lost Hills crownscale to: Less <br />than Significant with Mitigation Incorporated. <br />Brittlescale (Atriplex depressa) <br />Brittlescale has a CRPR of 1B.2, but it is not listed under FESA or CESA. This <br />species is an annual herb in the goosefoot family, and it blooms from April <br />through October (CNPS 2019). It is endemic to California, and its current range <br />includes the Central Valley (CNPS 2019; Jepson Flora Project 2019). It typically <br />grows in chenopod scrub, meadows and seeps, playas, valley and foothill <br />grasslands, and vernal pools (CNPS 2019). The microhabitat for brittlescale <br />includes alkaline and clay soils (CDFW 2019). Brittlescale is threatened by <br />development, grazing, and trampling (CNPS 2019). This species has moderate <br />potential to occur within the Study Area based on the presence of potentially <br />suitable habitat. <br />Implementation of Mitigation Measures MM BIO-1b, MM BIO-12, MM BIO-18, <br />and MM BIO-19 would reduce potential impacts to brittlescale to: Less than <br />Significant with Mitigation Incorporated. <br />Lesser saltscale (Atriplex minuscula) <br />Lesser saltscale has a CRPR of 1B.1, but it is not listed under FESA or CESA. <br />This species is an annual herb in the goosefoot family, and it blooms from May <br />through October (CNPS 2019). It is endemic to California, and its current range <br />includes the San Joaquin Valley and San Francisco Bay Area (CNPS 2019; <br />Jepson Flora Project 2019). It typically grows in chenopod scrub, playas, valley