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<br />Soil Investigations for Data Collection in the Delta <br />Initial Study/Proposed Mitigated Negative Declaration 104 <br />Implementation of Mitigation Measures MM BIO-18 and MM BIO-19 would <br />reduce potential impacts to Lemmon’s jewelflower to: Less than Significant with <br />Mitigation Incorporated. <br />Congdon's tarplant (Centromadia parryi ssp. congdonii) <br />Congdon’s tarplant has a CRPR of 1B.1, but it is not listed under FESA or CESA. <br />This species is an annual herb in the sunflower family, and it blooms from May <br />through October (CNPS 2019). It is endemic to California, and its current range <br />includes the Central Coast, San Francisco Bay Area, and South Coast Ranges <br />(CNPS 2019; Jepson Flora Project 2019). It typically grows in alkaline valley and <br />foothill grasslands (CNPS 2019). Threats to this species include development, <br />grazing, and non-native plants (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-18 and MM BIO-19 would <br />reduce potential impacts to Congdon’s tarplant to: Less than Significant with <br />Mitigation Incorporated. <br />Pappose tarplant (Centromadia parryi ssp. parryi) <br />Pappose tarplant has a CRPR of 1B.1, but it is not listed under FESA or CESA. <br />This species is an annual herb in the sunflower family, and it blooms from May <br />through November (CNPS 2019). It is endemic to California, and its current <br />range includes the southern North Coast Ranges, southern Sacramento Valley, <br />and northern Central Coast (CNPS 2019; Jepson Flora Project 2019). It typically <br />grows in chaparral, coastal prairie, meadows and seeps, coastal saltmarshes, <br />and valley and foothill grasslands (CNPS 2019). The microhabitat for pappose <br />tarplant includes vernally mesic, often alkaline sites (CDFW 2019). Threats to <br />this species include agriculture, competition from non-native plants, <br />development, grazing, foot traffic, habitat disturbance, and road maintenance <br />(CNPS 2019). This species has moderate potential to occur within the Study <br />Area based on the presence of potentially suitable habitat. <br />Implementation of Mitigation Measures MM BIO-1b, MM BIO-18, and MM BIO-19 <br />would reduce potential impacts to pappose tarplant to: Less than Significant with <br />Mitigation Incorporated. <br />Parry's rough tarplant (Centromadia parryi ssp. rudis) <br />Parry’s rough tarplant has a CRPR of 4.2, 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 />May through October (CNPS 2019). It is endemic to California, and its current <br />range includes the southern Interior North Coast Ranges, Central Valley, and <br />Modoc Plateau (CNPS 2019; Jepson Flora Project 2019). It typically grows in <br />vernal pools and valley and foothill grasslands (CNPS 2019). The microhabitat <br />for Parry’s rough tarplant includes alkaline, vernally mesic seeps, sometimes on