Lacey Livestock Agircultural Well
Summary
SCH Number
2025110549
Public Agency
Mono County
Document Title
Lacey Livestock Agircultural Well
Document Type
NOE - Notice of Exemption
Received
Posted
11/14/2025
Document Description
This well is a new stock well to be drilled to a depth of 100 feet. This well will be a stockwater well that is low volume and of periodic use. It will be pumped for less than 6 months of the year and at a rate of 20 gallons per minute or less.
Contact Information
Name
Jill Kearney
Agency Name
Mono County Environmental Health
Job Title
Environmental Health Director
Contact Types
Lead/Public Agency
Phone
Email
Location
Counties
Mono
Regions
Unincorporated
Cross Streets
Highway 395
Zip
93517
Total Acres
80.75
Parcel #
011-020-015-000
State Highways
Highway 395
Waterways
Virginia Creek
Other Location Info
South of Bridgeport
Notice of Exemption
Exempt Status
Ministerial
Type, Section or Code
Sec. 21080(b)(1); 15268
Reasons for Exemption
Mapping resources indicate the nearest well in the vicinity of the proposed well site is on APN 011-020- 015, the same parcel as the proposed well. This well is more than 1000 feet southeast of the proposed well and is a domestic well that serves residential structures on the parcel. Based on a review of the State Water Resources Control Board’s Low-Threat Underground Storage Tank Case Closure Policy, a 1,000-foot separation from active production wells to contamination plumes is considered to be sufficient separation to pose a low threat to human health, safety, or the environment, and appropriate for no further action determination based on the groundwater-specific criteria specified. Under this assumption, wells separated by 1000 feet or more should have negligeable effect on each other. This is further shown by modeling work done by Santa Barbara County demonstrating that a new or replacement well located more than 1,000 feet from an existing well is not likely to interfere with the production of that well. The modeling is based on hypothetical water well drawdown using conservative yet anticipated values for transmissivity, storage coefficient, and anticipated pumping yields to support field grown agriculture commodities. In addition, because there is no direct instrumental evidence of subsidence occurring in the Bridgeport area, the potential for subsidence is considered to be low. Further, because groundwater extractions in the Bridgeport area are distributed throughout the area rather than being concentrated in small zones, the effects of subsidence, if any, may be more area wide.
Exempt Status
Categorical Exemption
Type, Section or Code
15268
Reasons for Exemption
Mapping resources indicate the nearest well in the vicinity of the proposed well site is on APN 011-020- 015, the same parcel as the proposed well. This well is more than 1000 feet southeast of the proposed well and is a domestic well that serves residential structures on the parcel. Based on a review of the State Water Resources Control Board’s Low-Threat Underground Storage Tank Case Closure Policy, a 1,000-foot separation from active production wells to contamination plumes is considered to be sufficient separation to pose a low threat to human health, safety, or the environment, and appropriate for no further action determination based on the groundwater-specific criteria specified. Under this assumption, wells separated by 1000 feet or more should have negligeable effect on each other. This is further shown by modeling work done by Santa Barbara County demonstrating that a new or replacement well located more than 1,000 feet from an existing well is not likely to interfere with the production of that well. The modeling is based on hypothetical water well drawdown using conservative yet anticipated values for transmissivity, storage coefficient, and anticipated pumping yields to support field grown agriculture commodities. In addition, because there is no direct instrumental evidence of subsidence occurring in the Bridgeport area, the potential for subsidence is considered to be low. Further, because groundwater extractions in the Bridgeport area are distributed throughout the area rather than being concentrated in small zones, the effects of subsidence, if any, may be more area wide.
County Clerk
Mono
Attachments
Notice of Exemption
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