FCZ 3B Grayson Creek Bank Erosion Repair
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State & LocalContract Overview
Solicitation details, issuing organization, response deadlines, documents, and interested companies for this government contract opportunity.
General Info
Agency
California → Contra Costa County
NAICS
237990 - Other Heavy and Civil Engineering ConstructionView NAICS
Place of Performance
Golfclub Road, Pleasant Hill, CA, 94523Set-Aside
NONE
Timeline
Organization & Contact Information
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AgencyCalifornia → Contra Costa County
Contacts2 people available
OfficeN/A
Organization / Agency
California → Contra Costa County
Office AddressN/A
Contacts
Full Description
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The purpose of this project is to restore a
gravel maintenance road and creek channel bank that eroded as a result of the road being over-topped by
surface flow during a storm event. The erosion is approximately 19 feet long, 9 feet wide and 4 feet deep. This
erosion has narrowed the usable width of the existing maintenance road and prevents County Maintenance staff
from accessing a section of Grayson Creek. The repair will consist of cutting an approximately 6-foot-deep key
into the channel bank and placing rock slope protection (RSP) and engineered fill to protect against erosion,
which will be compacted up the slope. Topsoil will be placed over the engineered fill and hydroseeded with a
native seed mix. The bank repair will extend approximately 35 feet long to conform to the adjacent channel
slopes. Temporary dewatering of the creek may be necessary during construction. The maintenance road along
the top of the channel bank will be restored to pre-existing condition. To lessen the impact of concentrated storm
surface flow coming from the neighboring property and prevent further erosion, a drainage inlet and 18-inch
diameter pipe will be installed. Real Estate transactions, utility relocations, temporary traffic control, and
vegetation trimming and removal may be necessary in support of the project. Construction is anticipated to occur
in 2026 or 2027. Work will take place during the dry season and will take approximately 3 weeks to complete.
Appropriate best management practices for erosion control and water pollution control will be implemented to
protect the creek. Applicable regulatory permits will be obtained before construction.
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