Salt and Nutrient Management Plan Monitoring Well Project- Phase 1


SCH Number
Public Agency
Coachella Valley Water District (CVWD)
Document Title
Salt and Nutrient Management Plan Monitoring Well Project- Phase 1
Document Type
NOE - Notice of Exemption
Document Description
The Coachella Valley Water District (CVWD) proposes to construct eight perched aquifer groundwater monitoring wells within the Coachella Valley’s Indio and Desert Hot Springs Sub-basin at various previously developed well site locations. The proposed monitoring wells will be used to monitor groundwater in the perched and shallow aquifers to address gaps and provide an improved overall understanding of water quality. The locations of the proposed monitoring well sites are: 1. Gap Well 17 – APN 696-180-067 (City of Indio well site; Ave. 44, Indio) 2. Gap Well 18 – APN 757-250-021 (CVWD Well Site 6807, Ave. 60, Coachella) 3. Gap Well 19 – APN 759-020-029 (CVWD Well Site 6805, Airport Ave., La Quinta) 4. Gap Well 20 – APN 737-200-023 (CVWD parcel at Ave. 83 Drain, Oasis) 5. Gap Well 21 – APN 751-340-018 (CVWD parcel at Ave. 74 and Polk St., Oasis) 6. Gap Well 22 – APN 729-120-020 (CVWD Booster/Reservoir Site 7990, Mecca) 7. Gap Well G3 – APN 654-190-036 (CVWD Reservoir Site 3501, Desert Hot Springs) 8. Gap Well G4 – APN 750-030-009 (CVWD Booster/Reservoir Site 4701, Desert Hot Springs) Construction is anticipated for a duration of one week at each existing site and will be contained within each existing site. The wells will be installed using a hollow-stem auger, sonic drilling, direct circulation, or mud rotary methods. Initially, the drilling process will require setting a conductor casing and drilling a 4-inch borehole to a varying depth of 50- to 350 feet for each well. Samples of the drill cuttings will be obtained and logged at 10-foot intervals. Upon completion of drilling, geophysical logging of the test bores will be performed. The wells will be designed based on the information obtained from each borehole. Monitoring will occur at each site as needed and conducted by CVWD staff. The project sites are not located within a conservation area associated with the Coachella Valley Multiple Species Habitat Conservation Plan (CVMSHCP). CVWD Reservoir/Booster Station 4701 is adjacent to the Indio Hills/Joshua Tree National Linkage Conservation Area and subject to the CVMSHCP Land Use Adjacency Guidelines for drainage, noise, toxics, lighting, and invasives. The sites are not subject to the CVMSHCP development mitigation fee because the sites are previously developed.

Contact Information

William Patterson
Agency Name
Coachella Valley Water District
Job Title
Environmental Supervisor
Contact Types
Lead/Public Agency


Coachella, Desert Hot Springs, Indio, La Quinta, Oasis, Mecca
Other Location Info
The project sites are located on developed, CVWD-owned parcels, and existing well sites, in eastern Coachella Valley, Riverside County, CA.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301, 15303, 15306
Reasons for Exemption
State CEQA Guidelines §15301 (Existing Facilities). This class 1 exemption allows for the operation, repair, maintenance, permitting, leasing, licensing, or minor alteration of existing public or private structures, facilities, mechanical equipment, or topographical features, involving negligible or no expansion of use beyond that existing at the time of the lead agency's determination. The project consists of minor alterations on an existing domestic well site and does not involve a significant use expansion. State CEQA Guidelines §15303 (New Construction and Conversion of Small Structures) consists of the construction and location of limited numbers of new, small facilities or structures; installation of small new equipment and facilities in small structures; and the conversion of existing small structures from one use to another where only minor modifications are made in the exterior of the structure. State CEQA Guidelines § 15306 (Information Collection). This class 6 exemption consists 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.
County Clerk


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