Submitted by Darlene Chirman – 2^nd District Natural Resources Advisory Committee, Goleta Slough Management Committee

Chirman Equilibrium Beach Alternative

Goleta Beach County Park (GBCP) Management

Revised 4/20/04

Darlene Chirman Concept:

West End of Park—Equilibrium Beach west of the entrance bridge

What information is needed to calculate Establish “stable configuration of beach-upland

interface” under current conditions? Bathymetry of Goleta Bay? Sediment Transport

Study?

Some hard structure at the “erosional hot spot”—limited rock revetment buried with nourishment

Sand, or a short rock groin, extension of headland, depending on coastal expert advise

Hard structures at west end hot spot would primarily protect UCSB pump station—they should

fund this portion of the project if its included in the overall project

Managed Retreat West End

Created Dunes west end beyond current loop parking area

East End of the Park—protected with engineered rock revetments

Protected from Entrance Bridge eastward

Plan for buried rock revetment (trenched in upland soil) from present east rock revetment to entrance bridge, beachward of the gazebo.

This could be optional unless erosion continues and threatens the utility

Utilities to service the park should enter on the bridge and go eastward only

Components of Chirman Equilibrium West Beach /Armored East Beach Alternative:

1) Managed retreat of west end of park from park entrance. Remove temporary and unpermitted rock revetments.

2) Create sand dunes west end beyond current “loop” parking lot. Includes “sacrificial” dunes close to active surf zone which can replenish the downcoast beach within GBCP

3) Small rock revetment west end in hot point, to protect UCSB pump station. Only with commitment of UCSB to fund construction/maintenance and keeping it buried in sand. Alternative could be short groin extension from headland, depending on coast expert advise.

4) Relocate all utilities out of west end of park. Utilities that traverse but do not service the park, relocate in 217 right-of-way. Utilities servicing the park enter across entrance bridge. Only exception could be irrigation lines in west end, with shut-offs that permanently cap lines if exposed by erosion.

5) Engineer existing revetments east end of park; protect restaurant, bathroom, parking lots. No higher than existing revetment, covered with sand. Dune vegetation around restaurant/bathroom.

6) Add “trenched” revetment between existing eastern revetment (near restaurant) to just beyond entrance bridge-to protect BR/utility vault, utilities, road/parking lot. Located where stable configuration or landward of same, providing “safe” distance from these structures. This could be a phased element, and installed only if erosion continues and threatens the gazebo and/or the utility vault.

7) Reconfigure west loop parking lot (probably when utility lines are dug up for relocation) to pull back from beach. Utilize much of “landscape” areas to provide less parking area, but with fewer planters and re-striping, equal number parking stalls.

8) “Reclaimed” area of loop parking lot to be planted in turf, to replace turf area lost to erosion (past and possible future loss)

9) Relocate west bathroom next to bikepath at end of current loop parking lot. There will be no parking past this point in this alternative, but dunes. “Temporary” structure, solar power only, probably vault style—pumped as are portable toilets.

10) Consider new parking lot landward of middle bathroom, if needed, once bus shuttle service is established and the bikepath from Old Town Goleta completed.

11) Relocate road to west parking lot landward as needed, to locate visitor areas seaward of vehicular traffic (can be phased).

12) Buried Flood Control pipe for dredge slurry in west end—not “permanent”, but unobtrusive. Can be relocated if needed due to erosion.

13) Beach nourishment component. Retain access point for sand replenishment at end of west parking area (current loop parking lot).