Malakoff Diggins State Historic Park, Blair Lake Geotechnical Investigation


SCH Number
Public Agency
California Department of Parks and Recreation
Document Title
Malakoff Diggins State Historic Park, Blair Lake Geotechnical Investigation
Document Type
NOE - Notice of Exemption
Document Description
Conduct geotechnical investigations to characterize the subsurface conditions within the embankment along the southern perimeter of Blair Lake, within Malakoff Diggins State Historic Park. Nested Vibrating Wire Piezometers (VWPs) will be installed in the borings to measure pore pressure within the embankment. Work includes: Conduct exploratory boring at two (2) sites within the embankment along Blair Lake o Use a track mounted drilling rig to advance two (2) 8-inch diameter mud rotary boreholes up to depths of 60-feet below the existing ground surface; o Soil cuttings will be disposed of off-site by a licensed waste disposal firm; o Install two (2) nested VWPs at various depths in each of the two (2) borings; o Install a flush-mount, traffic-rated utility vaults at each of the boring sites, at ground level. Work will not adversely affect natural or cultural resources.

Contact Information

Joel Bonilla
Agency Name
Environmental Coordinator, California State Parks
Contact Types
Lead/Public Agency


Cross Streets
North of North Bloomfield road and Relief Hill Road
Blair Lake
Other Location Info
The project is located on a trail that travels around Blair Lake, within Malakoff Diggins State Historic Park.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
Section 15304 and 15306
Reasons for Exemption
Project consists of minor public or private alterations in the condition of land and/or vegetation which do not involve removal of healthy, mature, scenic trees, and consist of basic data collection, research, experimental management, and resource evaluation activities which do not result in a serious or major disturbance to an environmental resource, and is listed as “soils and engineering tests” and “Percolation tests” in the Department of Parks and Recreation’s list of exempt activities in accordance with CCR §15300.4.


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