Twain Harte Pipeline Improvement Project

2 Documents in Project


SCH Number
Lead Agency
Twain Harte Community Services District
Document Title
Twain Harte Pipeline Improvement Project
Document Type
MND - Mitigated Negative Declaration
Present Land Use
Existing roads/R/P- Parks and Recreation, GC- General Commercial, LDR- Low Density Residential, MU- Mixed Use/R-A: (Rural Residential) • C-1: (General Commercial)
Document Description
The proposed Project consists of the replacement of existing deteriorating 4- to 10-inch diameter sewer pipelines, within existing rights-of-way (ROW) and utility easements. In addition, severely damaged manhole covers will also be replaced. These areas include the following: adjacent to Twain Harte Lake, two (2) located around Marquis Drive; Twain Harte Drive to Spruce Drive; Fuller to Manzanita Drive; Golf Club Drive (South); Sewer crossing of inlet to Twain Harte Lake; Willowood Drive and Tuolumne Drive; and Golf Club Drive.The District is seeking funding through the California’s Clean Water State Revolving Fund (CWSRF) for the areas listed above. Implementation of the proposed project will allow the District to maintain, replace, and upgrade its sewer system so that it can continue to comply with regulations, avoid sanitary sewer overflows into critical waterways, provide adequate capacity, and protect groundwater and surface water quality. Construction is expected to take approximately 5 months, with construction anticipated to start in Q2 of 2023 (depending on funding). Some of the pipeline runs above ground sitting on cradles and in some areas the pipe is below ground. The pipelines being replaced below ground will be abandoned in place and remain under ground..

Contact Information

Jaymie Brauer
Agency Name
Quad Knopf, Inc representing the Lead Agency
Job Title
Principal Planner/Project Manager
Contact Types
Lead/Public Agency / Project Applicant

Jeff Black
Agency Name
Twain Harte Community Service District
Job Title
Contact Types
Lead/Public Agency


Twain Harte- unincorporated
Cross Streets
various streets
Total Acres
Parcel #
NA- linear project along roadways and utility easements
State Highways
RS 108
Twain Harte School
Harte Lake
8 9

Notice of Completion

State Review Period Start
State Review Period End
State Reviewing Agencies
California Air Resources Board (ARB), California Department of Conservation (DOC), California Department of Fish and Wildlife, Central Region 4 (CDFW), California Department of Forestry and Fire Protection (CAL FIRE), California Department of Parks and Recreation, California Department of Water Resources (DWR), California Highway Patrol (CHP), California Native American Heritage Commission (NAHC), California Natural Resources Agency, California Public Utilities Commission (CPUC), California State Lands Commission (SLC), Central Valley Flood Protection Board, Department of Toxic Substances Control, Office of Historic Preservation, Sierra Nevada Conservancy, State Water Resources Control Board, Division of Water Quality, State Water Resources Control Board, Divison of Financial Assistance, California Department of Transportation, District 10 (DOT), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
State Reviewing Agency Comments
California Department of Transportation, District 10 (DOT), California Regional Water Quality Control Board, Central Valley Sacramento Region 5 (RWQCB)
Development Types
Waste Treatment:Sewer (Upgrade and replacement of deteriorated sewer pipelines)(MGD 0.85)
Local Actions
State Funding
Project Issues
Aesthetics, Agriculture and Forestry Resources, Air Quality, Biological Resources, Cultural Resources, Drainage/Absorption, Energy, Flood Plain/Flooding, Geology/Soils, Greenhouse Gas Emissions, Hazards & Hazardous Materials, Hydrology/Water Quality, Land Use/Planning, Mandatory Findings of Significance, Mineral Resources, Noise, Population/Housing, Public Services, Recreation, Septic System, Sewer Capacity, Solid Waste, Transportation, Tribal Cultural Resources, Utilities/Service Systems, Vegetation, Wetland/Riparian, Wildfire
Local Review Period Start
Local Review Period End


Notice of Completion [NOC] Transmittal form
State Comment Letters [Comments from state reviewing agencies]

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 or via phone at (916) 445-0613. For more information, please visit OPR’s Accessibility Site.

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