Water Line Replacement Under Pilarcitos Creek at Strawflower Village

2 Documents in Project


SCH Number
Lead Agency
Coastside County Water District
Document Title
Water Line Replacement Under Pilarcitos Creek at Strawflower Village
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Document Description
The CCWD is proposing to replace the water line under Pilarcitos Creek. The existing 8-inch pipeline crossing beneath the creek is one of only two pipelines supplying water to areas of the CCWD south of the creek, including downtown Half Moon Bay. The existing pipe has reached the end of its useful life and a break underneath the creek bed would impair water delivery and could potentially damage the environment. A break in the water line would be difficult to detect, could cause potentially significant water loss, impair water quality, and cause liability to the CCWD with potential fines from the U.S. Army Corps of Engineers, Regional Water Quality Control Board, or California Department of Fish and Wildlife. The CCWD completed an initial phase of water line replacement work in June 2017 that consisted of installing approximately 400 ft of 8-inch pipe within the Strawflower access road from SR-1 that ensures water supply to commercial customers in the event of a problem with the existing pipe under the creek. The approximately 450-foot-long new pipeline would be installed using horizontal directional drilling under the creek from the Strawflower Village Shopping Center to Oak Avenue, with staging areas in the back of the shopping center and in Oak Park extending down Pilarcitos Avenue to the south.

Contact Information

Tali Ashurov
Agency Name
WRA Environmental Consulting
Contact Types
Consulting Firm

Mary Rogren
Agency Name
Coastside County Water District
Contact Types
Lead/Public Agency


Half Moon Bay
San Mateo
Northern California
Cross Streets
Oak Avenue and Strawflower Village Shopping Center
Parcel #
056-300-150 056-300-210 056-141-950 056-141-970 056-040-999
State Highways
State Route 1
La Costa Adult School, Manuel F Intermediate School
Pilarcitos Creek

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Coastal Commission (CCC), California Department of Conservation (DOC), California Department of Fish and Wildlife, Bay Delta Region 3 (CDFW), California Department of Fish and Wildlife, Marin Region 7 (CDFW), California Department of Parks and Recreation, California Department of Transportation, District 4 (DOT), California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Regional Water Quality Control Board, San Francisco Bay Region 2 (RWQCB), California State Lands Commission (SLC), Department of Toxic Substances Control, Office of Historic Preservation, State Water Resources Control Board, Division of Drinking Water, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Divison of Financial Assistance
Development Types
Other (Water Pipeline Replacement, no increases in capacity)
Local Actions
Coastal Permit
Project Issues
Biological Resources, Coastal Zone, Cultural Resources, Hazards & Hazardous Materials, Noise, Public Services, Transportation, Tribal Cultural Resources, Wildfire


Disclaimer: The Governor’s Office of Planning and Research (OPR) accepts no responsibility for the content or accessibility of these documents. To obtain an attachment in a different format, please contact the lead agency at the contact information listed above. You may also contact the OPR via email at state.clearinghouse@opr.ca.gov or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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