RES 06035 - Laserfiche WebLink

Chapter 4 Environmental Setting, Impacts, and Mitigation Measures D. Biological Resources compaction associated with trail construction resulting in mortality of CTS in upland habitat would be considered a significant impact, . The California red-legged frog (CRLF) has the potential to breed in the aquatic habitat located within the project site, particularly along the Arroyo de la Laguna, in drainage channel B-2-1, and in the detention ponds, During the dry season, CRLF are likely to concentrate in such perennial aquatic areas, which would be avoided by the project. In winter, CRLF may use uplands adjacent to aquatic habitat for dispersal and forag- ing. Ground disturbance and material staging during the wet season resulting in CRLF mortality would be considered a significant impact, . The western pond turtle may potentially occupy the site's aquatic habitat, These areas are not proposed to be disturbed by Plan development; however, ground distur- bance associated with trail construction in adjoining uplands could result in the destruction of turtle nests, The destruction of turtle eggs and/or hatchlings would be considered a significant impact. Mitigation Measures Built Into the Specific Plan for Aquatic Species The following measures have been included in the Specific Plan to avoid impacts on special status species (populations of California tiger salamander and California red-legged frog and nests of the western pond turtle) due to ground disturbance (grading, material staging, and/ or trail construction), . Trail construction activities on the Knoll shall occur during the dry season, and mammal burrows within the staked trail alignments in this area shall be excavated to determine California tiger salamander presence or absence, The California tiger salamander has the potential to breed in the "Cow Pond" in the southeastern corner of the property if the pond contains standing water for at least 12 weeks in a year of average rainfall, extending into April. If this pond meets this criterion, trail construction within 1,000 feet of this pond must occur during the dry season, Once the trails in the vicinity of the pond are staked, every mammal burrow within the trail alignment footprint shall be excavated to determine CTS presence or absence, If CTS are encountered, a qualified biologist shall relocate the CTS to a burrow located outside of the footprint and any staging areas. . Any construction work adjacent to the Arroyo de Laguna corridor and the storm water detention basins shall generally be conducted between July 1 and October 15 to minimize impacts on the California red-legged frog, The California red-legged frog has the potential to breed in the aquatic habitat in the Arroyo de la Laguna corridor and the recently constructed storm water detention ponds on the project site, During the dry season, CRLF are anticipated to be concentrated in perennial aquatic habitat within Arroyo de la Laguna, Trail and infrastructure construc- tion work within 300 feet of the Arroyo and the detention basins shall occur between July 1 and October 15 to minimize impacts on California red-legged frog, If work must occur outside this time period, additional measures will be needed, . Surveys shall be conducted for the western pond turtle; if determined to be present on the site, suitable protective measures will be implemented through consultation 67