Kelseyville Well No. 1 Replacement Project
Summary
SCH Number
2006028101
Public Agency
Lake County
Document Title
Kelseyville Well No. 1 Replacement Project
Document Type
NOE - Notice of Exemption
Received
Posted
2/8/2006
Document Description
Installation of a new potable water well to replace an existing well. The existing well poses a threat to public health because it does not have the necessary sanitary seal to prevent a pathway for surface contaminants to enter the acquifer. Use on the existing well is limited to emergency use only because it was not constructed to meet current DHS standards. The replacement well will be constructed on the same parcel as the existing well and will be installed to the same width (12 inches) and the same depth (90 feet). The pump from the existing well will be used in the replacement well and capacity of the replacement well will be the same as the existing well.
The replacement well will be installed within 30 feet of the existing well. A monitoring well will be installed within 10 feet of the replacement well. Mud-rotary drill technique will be used for both the pilot hole and the well boring. A well development and a performance test will be conducted on the replacement well requiring 24-hours of continuous pumping at an estimated rate of 500 gpm. The test pumping will be carried out after submitting a NOI to obtain a General NPDES Permit for low threat discharges. Approximately 87 feet of new pipeline will be installed to connect the existing water distribution system tot he replacement well.
The existing well will be abandoned and sealed following installation of the replacement well. The well casing will be sealed to prevent vertical migration of contaminants to the existing groundwater (present at approximately 20 feet below ground surface).
Contact Information
Name
Carolyn E. Ruttan
Agency Name
Lake County Community Development Department
Contact Types
Lead/Public Agency
Phone
Location
Counties
Lake
Other Location Info
City: Kelseyville
Notice of Exemption
Exempt Status
Categorical Exemption
Type, Section or Code
Section 15302(c)
Reasons for Exemption
The project is exempt because the proposed replacement well will be installed on the same site as the existing well and the proposed use of the replacement is equal ot the use of the existing well. No expansion in capacity is proposed for the replacement well. A General NPDES Permit will be obtained to allow the test pumping of the new well.
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