eelgrass blades above sand, and general health of eelgrass following information shall be
The survey shall be repeated following beachfill operations and again at the end of the summer
season during the period of maximum sand cover. If project-generated sand deposition is
observed to be adversely affecting the eelgrass bed, subsequent beach fill activities at Goleta
Beach shall either be modified in a way to prevent deposition of sand in the eelgrass bed or
ceased entirely at this site. If the project is observed to cause extensive damage to the eelgrass
bed resulting in a loss of plants, additional mitigation may be required.
The Goleta Beach fill site is located just west of the mouth of the Goleta Slough and sediment
may move towards the mouth of the slough and cause it to close. The Santa Barbara County
Flood Control District currently reopens the mouth of the Slough three to four times a year. The
mouth of Goleta Slough shall be monitored during and after beach fill operations at Goleta
Beach. If monitoring indicates that the slough mouth is closed as a result of beach fill activities,
BEACON proposes to reopen the slough mouth with bulldozers.
To prevent impacts to the kelp beds located downcoast of the Goleta beach fill site, turbidity
monitoring will be conducted. It is proposed that turbidity monitoring will be conducted during
construction of the beach fills by visual observation to ensure that the turbidity plume does not
increase significantly over ambient conditions for an extended duration and area. Beach profile
surveys will be conducted prior to and after construction of beach fill operations to track the
movement and retention of sand. Methods for collecting profile data should be consistent with
previous profiling efforts to ensure the data are comparable over time.
ASH AVENUE (CARPINTERIA BEACH)
Ash Avenue is also an environmentally sensitive site, therefore biological monitoring will be
conducted on the Carpinteria Reef located upcoast of the proposed beach fill location, the
intertidal habitat located downcoast, and visual monitoring for potential impacts to the
Carpinteria Marsh inlet from closure.
Carpinteria Reef. The Carpinteria Reef will be monitored for potential sedimentation and
health. Beach fill is proposed during the Fall-Winter only, when the littoral drift is predominately
to the south; therefore, sand burial of the reef should not occur. An intertidal reef is located
downcoast and will be monitored for potential sand burial. BEACON will coordinate with
researchers from the University of California at Santa Barbara (UCSB) who are conducting a
long-term monitoring program at Carpinteria Reef. A baseline shall be established prior to beach
fill activities at Ash Avenue. The baseline will include installing reference stakes to measure
sand deposition. Permanent transects shall be established to monitor the percentage of sand and
rock substrate along each transect, sand height over the reef, percent cover of sand and organisms
on rocks, density of kelps and large invertebrates, density of life stages of kelp, and observations
on health of kelp and other organisms.
Moffatt & Nichol Engineers