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47 Mitigation Measures 15-1(b) and 15-2 from the DTPP Final EIR, respectively with clarifying amendments) as sufficient to reduce impacts to a less-than significant level. The DTPP Plan-Wide Amendments program SEIR indicated that 901 El Camino Real (Commercial Component) would alter approximately 170 feet of existing culvert and approximately 170 feet of Arroyo Ojo and would result in temporary effects to riparian habitat during construction, possibly resulting in permanent impacts, depending on the intensity and nature of the work proposed. Mitigation Measures BIO-2a and 2b would sufficiently reduce impacts to the special-status northern coastal salt marsh community and riparian habitat in Arroyo Ojo to a less-than significant level. According to the On-Site Habitat Mitigation and Monitoring Plan (MMP) prepared by H. T. Harvey & Associates for the Commercial Component (“901 El Camino Real Project, On-Site Habitat Mitigation and Monitoring Plan,” May 14, 2024), Little River Creek Park contains a 170-foot-long earthen channel with jurisdictional aquatic, wetland, and riparian habitats. The existing channel is culverted both upstream and downstream of the site. As part of the Commercial Component, the existing 170-foot-long earthen creek channel in Little River Park would be converted to developed land uses with a new storm drain underneath, and the earthen creek channel would be relocated and restored. The relocated/restored creek channel would have an approximately equivalent length (170 feet to 166 feet, but may be up to 185 feet depending on regulatory approvals and permits.) Per the project component MMP (Figure 3. Jurisdictional Habitat Impacts), the earthen channel contains freshwater marsh (wetland), open water, and riparian grassland habitat types. The Commercial Component would result in permanent impacts to wetland and aquatic habitat under jurisdiction of the U.S. Amry Corps of Engineers (USACE), Regional Water Quality Control Board (RWQCB), and California Department of Fish and Wildlife (CDFW) and would cause permanent impacts to riparian grassland habitat under RWQCB and CDFW jurisdiction. Within the riparian grassland habitat, the Commercial Component would remove 10 riparian trees. In-depth detail about the proposed restored creek channel is provided in the MMP prepared by H. T. Harvey & Associates. The MMP was prepared in accordance with Mitigation Measure BIO-2b (formerly Mitigation Measure 15-2 from the DTPP Final EIR with clarifying amendments) which requires the project applicant to obtain all required permits and approvals from USACE, CDFW, and RWQCB. The MMP supports the following permit applications required for the Commercial Component: USACE Clean Water Act Section 404 Nationwide Permit; RWQCB Clean Water Act Section 401 Certification; and CDFW 1600 Lake and Streambed Alteration Agreement. The Commercial Component MMP developed a combination of on-site and off-site mitigation to fully compensate for the impacts to aquatic, freshwater marsh, and riparian grassland jurisdictional habitats. For on-site mitigation (H. T. Harvey & Associates, p. 2), the impacted habitats would be restored along the new earthen channel at a minimum 1:1 ratio. Permanent impacts to 0.023 acre of aquatic habitat will be mitigated in kind at a minimum ratio of 1:1 (mitigation surface area: impact surface area) by restoring at least 0.023 acre of aquatic habitat in the relocated channel; the current design will restore approximately 0.031 acre of aquatic habitat. The restored channel will have an approximately equivalent length (i.e., 170 feet to 166 feet). The restored channel is expected to function geomorphically in a similar or better way to the existing condition. The restored channel in the aquatic habitat mitigation area will be an improvement over the existing aquatic habitat as flows are expected to be slower in the widened, slightly sinuous creek cross-section, which will reduce the erosive force of creek flows. Permanent impacts to 0.033 acre of freshwater marsh habitat will be mitigated in kind at a ratio of 1:1 (mitigation surface area: impact surface area) by restoring at least 0.033 acre of freshwater marsh habitat in the relocated channel. The restored freshwater marsh will represent an uplift from the existing condition due to the greater diversity of native species, which will provide greater structural diversity as well as relative to the existing condition. Freshwater marsh habitat will provide a variety of ecosystem functions, including improved water quality and support of native wildlife. Permanent impacts to 0.122 acre of riparian grassland will be mitigated on-site at a minimum ratio of 1:1 (mitigation surface area: impact surface area) by restoring at least 0.122 acre of riparian woodland habitat in the relocated channel. The target habitat will be restored by active revegetation including installation and short-term plant maintenance of tree and shrub species that compose the target habitat. The mitigation trees will create valuable riparian habitat because many of the mitigation tree and shrub species have high native wildlife value as forage and nesting habitat. Additionally, the Commercial Component MMP includes a work plan to serve as the construction documentation to support construction of the mitigation by a qualified restoration contractor. The work plan includes a dewatering and ATTY/RESO.0028/CC RESO CEQA GUIDLINES (920 SHASTA) - EXHIBIT A REV: 04-22-25 VR Page 47 of 148