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Soil Investigations for Data Collection in the Delta Initial Study/Proposed Mitigated Negative Declaration 79 Measures MM BIO-1 and MM BIO-12 would avoid and minimize adverse impacts to suitable habitat and would reduce potential impacts to midvalley fairy shrimp to: Less than Significant with Mitigation Incorporated. Valley elderberry longhorn beetle (Desmocerus californicus dimorphus) Valley elderberry longhorn beetle is listed as Threatened under FESA but is not listed under CESA. It has a NatureServe ranking of G3T2S2 and is included on CDFW’s Special Animals List. This species is a terrestrial, wood-boring beetle whose larvae feed exclusively on elderberry (Sambucus sp.). It is endemic to California, and its known range extends through the Central Valley. It typically occurs in riparian or other habitat that supports its elderberry host plants, typically below 500 feet in elevation. Adult beetles emerge in spring and summer and lay eggs on the elderberry leaves. Upon hatching, larvae bore into the stems and create feeding galleries in the pith, where they will reside for several months. Prior to pupation, the larva creates an exit hole, then returns to the gallery where it pupates. The adult beetle will then emerge approximately one month later. Threats to the species include agricultural conversion, urban development, stream channelization, and channel hardening, which eliminate habitat for the host plant (USFWS 2017). Valley elderberry longhorn beetle has high potential to occur within the Study Area based on the presence of suitable habitat. Implementation of Mitigation Measure MM BIO-13 would reduce potential impacts to valley elderberry longhorn beetle to: Less than Significant with Mitigation. MM BIO-13: Valley Elderberry Longhorn Beetle To minimize and avoid the potential impacts to Valley Elderberry Longhorn Beetle (VELB) that may occur within the project area, the following measures will be implemented: a. When feasible, project activities shall be sited at least 50 meters from elderberry shrubs with stem diameter greater than 1-inch. b. If activities must be conducted within 50 meters of an elderberry shrub, the following measures will apply: i. activities will be conducted outside of VELB flight season (March 1- July 31); ii. a biological monitor will be present to monitor all project activities at the site; iii. all ground disturbing activities (boring, CPT, or vegetation removal) will be located at least 6 meters from the dripline of the elderberry shrub;