Table 8-4.1. Mitigation Monitoring Program - Aesthetic/Visual Resources Impact Mitigation Measure Location Monitoring / Reporting Action Effectiveness Criteria Responsible Agency Timing 1: Onshore construction and abandonment activities adversely affect daytime and nighttime views in the area. 1: During construction, position all elevated construction lighting downward and/or toward the west and south such that direct views of the light source are not visible from the residence on , or to travelers along within Montaña de Oro State Park. Use the lowest watt bulbs possible, and conduct periodic monitoring of the visual impacts of the lights. Monitoring shall be conducted by the environmental monitor and if necessary will result in recommendations to adjust the location, position, etc. of lighting in the parking lot throughout the construction period. Terrestrial segment Compliance monitoring. Reduces aesthetic and visual impacts. CSLC During construction. -2: Project installation may require trimming or removal of vegetation to access the existing conduit route -2a: AT&T shall trim all woody vegetation in preference to cutting, and shall cut all woody vegetation in preference to bulldozing. Terrestrial segment Compliance monitoring. Reduces aesthetic and visual impacts. CSLC During construction. -2b: Existing ground cover such as grasses, leaves, brush and tree trimmings shall be cleared and piled only to the extent necessary. Slash and limbs shall be disposed of as directed by the appropriate agency official. Terrestrial segment Compliance monitoring. Reduces aesthetic and visual impacts. CSLC / CDPR / Planning During construction. In addition, implement MM-TERBIO-3a and b: Oak tree avoidance and certified arborist. 8-4.2. Mitigation Monitoring Program - Air Quality Impact Mitigation Measure Location Monitoring / Reporting Action Effectiveness Criteria Responsible Agency Timing
AQ1: Vessels used for construction and decommissioning could temporarily exceed daily emission thresholds for ozone precursors within the APCD. NOx Control Measures and CBACT. The proposed project shall implement Best Available Control Technology for all emissions exceeding 2.5 tons per quarter. These measures include but are not limited to the following standard construction equipment mitigation measures: Maintain all construction equipment in proper tune according to manufacturer’s specifications. Fuel all off-road and portable diesel powered equipment, with certified motor vehicle diesel fuel (non-taxed version suitable for use off-road). Maximize to the extent feasible, the use of diesel construction equipment meeting the ’s Tier 2 or newer certification standard for heavy-duty diesel engines. Maximize to the extent feasible, the use of on-road heavy duty equipment and trucks that meet the ’s 2007 or newer certification standard for on road heavy duty diesel engines. All on and off-road diesel equipment shall not be allowed to idle for more than 5 minutes. Signs shall be posted in the designated queuing areas and or job sites to remind drivers and operators of the 5 minute idling limit. The following additional measures shall be utilized to address the requirement for CBACT Install diesel oxidation catalysts (), catalyzed diesel particulate filters (CDPF) or other District approved emission reduction retrofit devices. Low-Emission Fuel. Low-sulfur diesel fuel shall be used in all smaller diesel-powered vessels and in all construction equipment. Entire alignment Construction vehicle and equipment compliance. Exhaust emissions are minimized. During construction. road
8-4.3. Mitigation Monitoring Program - Biological Resources Impact Mitigation Measure Location Monitoring / Reporting Action Effectiveness Criteria Responsible Agency Timing TERBIO1: Cable installation activities could adversely affect nesting activities of protected migratory birds and raptors. TERBIO-Previous MM: Construction activity would not take place within 0.5-mile (0.8-km) of identified raptor nesting areas during the period of February 1 through July 15. Terrestrial segment Compliance monitoring. Consistent with requirements stipulated by resource agencies. Confirmation by Environmental Monitor. SLOCP During construction. TERBIO-1a: Initial vegetation removal shall be conducted prior to, or after, the typical migratory bird nesting season (March 1 through August 1) to avoid any potential impact to migratory bird nesting activity. Therefore, initial vegetation clearing and tree trimming along the alignments should be conducted between the months of August and February. Terrestrial segment Pre-construction survey. Consistent with requirements stipulated by resource agencies. Confirmation by Environmental Monitor. / CDFG During construction. TERBIO-1b: If MM TERBIO-1a. is infeasible, pre-construction surveys shall be conducted prior to any vegetation removal to identify any potential bird nesting activity, and: If active nest sites of bird species protected under the Migratory Bird Treaty Act are observed within the vicinity of the Project site, then the Project shall be modified and/or delayed as necessary to avoid direct take of the identified nests, eggs, and/or young; If active nest of bird species of special concern (e.g., loggerhead shrike, horned lark, etc.) are observed within the vicinity of the Project site, then CDFG shall be contacted to establish the appropriate buffer around the nest site. Construction activities in the buffer zone shall be Terrestrial segment Pre-construction surveys and monitoring. Consistent with requirements stipulated by resource agencies. Confirmation by Environmental Monitor. CSLC/ USFWS / CDFG Prior to and during construction.
semi-aquatic special-status species including but not limited to steelhead trout, California frog, southwestern pond turtle, and garter snake. All special-status species within and/or immediately adjacent to the crossing(s) shall be relocated to suitable habitat located outside the roadway by a qualified biologist. The frequency of special-status species surveys within Los Osos Creek should be increased at the discretion of the approved biologist to account for increased special-status species activity and/or occurrences. Exact procedures and protocols for relocation of species of concern (e.g., southwestern pond turtle, two-striped garter snake, etc.) shall be agreed to during pre-Project consultation with CDFG. At no time shall any federally-listed species (e.g., steelhead trout, red-legged frog, etc.) be relocated from the crossings without prior authorization from the NMFS and/or USFWS. MM TERBIO-2k. During all construction activities, domestic pets shall not be allowed within the construction area to minimize the potential for wildlife harassment. TERBIO-3: The proposed Project has the potential to result in permanent loss and/or long-term degradation and fragmentation of natural habitats including sensitive plant communities, which provide forage, cover, and breeding elements for several wildlife taxa, including special-status species. TERBIO-3: Previous Mitigation Measure from 1991 County Coastal Development Permit (D900110D): General Measures 1. Standard procedures for the proposed fiber optic cable project would include implementation of erosion control and revegetation measures to ensure that lands disturbed by construction activities would be restored to a stable, productive, and aesthetically acceptable condition. 2. Detailed site-specific restoration and reclamation plans would be developed under the direction of the appropriate agency official. Because the proposed Entire alignment Compliance monitoring. Reduces damage to oak trees. SLOCP / USFWS / CDFG / CDPR / SLOCACD Before and during construction.
specifically with a 5:1 replacement of oak trees and manzanita and revegetation with an appropriate mix of native seeds and plants. If the environmental monitor deems that the width of the disturbance is excessive, work shall cease until it can be determined what the appropriate width should be. AT&T has indicated that the width of disturbance should not exceed 40 feet (12 m) at crossings and in areas of difficult terrain, and would average 30 feet (9 m)along the majority of the line. In areas of sensitive vegetation, it is possible to reduce the width of disturbance to 10 feet (3 m) depending on terrain conditions. b. SLO Junction to 1) In areas of coastal scrub and Arroyo de la Cruz manzanita, the route shall follow existing roads or trails as closely as possible to reduce vegetation removal. Revegetation shall be with fast growing herbs and shall include shrubs native to the local coastal scrub community. 2) In areas of chaparral, construction shall follow the existing road, and disturb the vegetation along the side as little as possible. c. to Los Osos Creek 1) The existing road west of Clark Valley Road shall be followed where feasible to avoid the oaks and shrubs. 2) All manzanitas along the route shall be flagged and avoided where possible.
MARBIO- 6: Damage to Rock Substrate During Maintenance and Repairs. MM-MARBIO-6: Prior to initiation of in-water activities, an anchoring plan for all vessels involved in maintenance, repair, and/or abandonment/removal activities shall be submitted to CSLC for approval. If necessary, an anchor-area clearance survey, similar to that recommended in Mitigation Measure MB-2a above, shall be completed. Marine segment Compliance monitoring. Reduces damage during maintenance activities. CSLC Prior to construction.
Heritage Commission must be notified. A Most Likely Descendant will be appointed by the commission for reburial of the remains. CR-3: areas of the Project corridor there are known cultural resources. CR-3: During construction, the following activities shall be excluded from designated sensitive areas: (1) unnecessary or expansive excavation; (2) staging equipment or machinery on undisturbed or exposed portions of the cultural resource; (3) failure to immediately contain and collect any chemical spills; (4) collection, removal or displacement of any artifacts, ecofacts or other cultural remains; (5) stockpiling of imported soils within the designated sensitive area; (6) removal of native soils outside a sensitive area. Terrestrial segment Map and mark sensitive resources on construction drawings or project maps. Reduce damage to cultural resources. CSLC During construction. CR-4: A highly degraded or deteriorated cultural resource (shipwreck) may occur undetected in the Project area buried within unconsolidated sediments, which could be damaged or destroyed during the pre-lay grapnel run or during the cable burial process. CR-4a: to the pre-lay grapnel run and cable installation, a qualified marine archaeologist shall complete an analysis of available side scan sonar data for the cable route between the 328 ft. (100 m) and 6,000 ft. (1830 m) water depth. The analysis shall identify and analyze all side scan sonar anomalies that occur in a 0.6 mile (1.0 km) wide corridor centered on the proposed cable route. The results of that report to the CSLC for approval prior to the pre-lay grapnel run and cable installation. Marine segment Review assessment for compliance. Reduce possible damage to unknown shipwrecks. CSLC Prior to construction. CR-4b: Should a previously unknown shipwreck of potential cultural resource value be discovered within the proposed cable corridor as a result of the study required in CR- 6a, the proposed cable route or installation procedures shall be modified to avoid the potentially significant cultural resource. Marine segment Compliance monitoring. Reduce possible damage to unknown shipwrecks. CSLC During construction. In addition, implement MM-MARBIO-5b: Spill Response and Recovery Plan. Table 84.6. Mitigation Monitoring Program - Geology and Soils Impact Mitigation Measure Location Monitoring / Reporting Action Effectiveness Criteria Responsible Agency Timing
WQ-3: Discharge of contaminated water during pipe preparation activities would result in significant impacts to water quality. WQ-3 : If required by the RWQCB, AT&T shall conduct chemical analytical testing of the current contents of the bore pipe and any proposed flush water prior to pipe preparation activities to ensure the water quality will not violate Ocean Plan water quality standards. Copies of the water quality analytical testing results shall be submitted to the California State Lands Commission or its environmental monitor and the Regional Water Quality Control Board for review and approval prior to discharge. In the event that RWQCB does not require such analytical testing, evidence substantiating this determination shall be submitted to the CSLC prior to the pipe preparation activities. Terrestrial segment Compliance monitoring, and testing. Reduce effect of fresh water discharge. CSLC/ RWQCB Prior to construction. 84.8. Mitigation Monitoring Program - Land Use and Recreation Impact Mitigation Measure Location Monitoring / Reporting Action Effectiveness Criteria Responsible Agency Timing REC1: The proposed Project temporarily affect recreational use of the parking lot. REC1a: Prior to cable installation, AT&T shall submit a plan and obtain the approval of such plan from the California Department of Parks and Recreation (CDPR) for the scheduling and locating of Project activities at the Sandspit Beach parking lot, access routes, and staging areas along the Ridge Conduit system within State Parks land, incorporating measures to ensure the availability of offsite parking, restrooms, fire prevention and spill prevention/control measures, and pedestrian access to the beach during Project activities. AT&T shall submit documentation of the approval to the Executive Officer of the California State Lands Commission (CSLC) prior to Project initiation. Terrestrial segment Notification of CDPR. Reduce impacts to recreational resources at Sandspit parking lot. CDPR / CSLC Prior to construction.