Laserfiche WebLink
<br />Soil Investigations for Data Collection in the Delta <br />Initial Study/Proposed Mitigated Negative Declaration 119 <br />Showy golden madia (Madia radiata) <br />Showy golden madia has a CRPR of 1B.1, but it is not listed under FESA or <br />CESA. This species is an annual herb in the sunflower family, and it blooms from <br />March through May (CNPS 2019). It is endemic to California, and its current <br />range includes the San Joaquin Valley, San Francisco Bay Area, and Inner <br />South Coast Ranges (CNPS 2019; Jepson Flora Project 2019). It typically grows <br />in cismontane woodland and valley and foothill grassland (CNPS 2019). The <br />microhabitat for showy golden madia includes adobe clay soils in grassland and <br />among shrubs (CDFW 2019). Threats to this species include grazing and non- <br />native species (CNPS 2019). This species has moderate potential to occur within <br />the Study Area based on the presence of potentially suitable habitat. <br />Implementation of Mitigation Measures MM BIO-18 and MM BIO-19 would <br />reduce potential impacts to showy golden madia to: Less than Significant with <br />Mitigation Incorporated. <br />Little mousetail (Myosurus minimus ssp. apus) <br />Little mousetail has a CRPR of 3.1, but it is not listed under FESA or CESA. This <br />species is an annual herb in the buttercup family, and it blooms from March <br />through June (CNPS 2019). Its current range in California includes the South <br />Coast, Peninsular Ranges, Mojave Desert, Tehachapi Mountains Area, Inner <br />North Coast Ranges, and the Central Valley (CNPS 2019). It typically grows in <br />valley and foothill grassland and vernal pools (CNPS 2019). The microhabitat for <br />little mousetail includes alkaline soils (CDFW 2019). Threats to this species <br />include vernal pool habitat loss, grazing, development, and agriculture (CNPS <br />2019). This species has moderate potential to occur within the Study Area based <br />on the 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 little mousetail to: Less than <br />Significant with Mitigation Incorporated. <br />Hoary navarretia (Navarretia eriocephala) <br />Hoary navarretia has a CRPR of 4.3 but it is not listed under FESA or CESA. <br />This species is an annual herb in the phlox family, and it blooms from May to <br />June (CNPS 2019). It is found in the Sacramento Valley, the northern and <br />central Sierra Nevada Foothills, Inner North Coast Ranges, and the eastern San <br />Francisco Bay Area (CNPS 2019; Jepson Flora Project 2019). It typically grows <br />in cismontane woodland and valley and foothill grassland (CNPS 2019). The <br />microhabitat for hoary navarretia includes vernally mesic sites (CDFW 2019). <br />Threats to this species have not been identified (CNPS 2019). Potentially <br />suitable habitat for hoary navarretia is present within the Study Area. However, <br />this species has low potential to occur within the Study Area because the Study <br />Area is located on the edge of its known range so potential impacts would be <br />less than significant.