B. Description of Proposed Boundary Modification

1. Short Description

   Scientific External Modification of the Santa Maria Groundwater Basin to eliminate fringe areas.
2. Type of basin boundary revision

   • Scientific External
3. Provide a narrative overview of the boundary modification request and how the resulting modification would affect likelihood of sustainable management.

   The request is to eliminate fringe portions of the basin in Santa Barbara County that lie outside of the boundary of the adjudicated basin. These areas all are: areas of improperly mapped consolidated materials, parcels managed pursuant to the adjudication that are split by the shapefile provided to DWR by the basin water master, areas of limited connectivity and limited contribution to the main basin, and/or areas of limited to no water use. The end result would be that the entire basin within Santa Barbara County would be managed pursuant to the adjudication, with no impact on the likelihood of sustainable management.

   Attachment(s):
4. List the existing basin(s)/subbasin(s) to be modified by this request

   • 3-012 SANTA MARIA
5. Provide the proposed name for the new basin(s) or subbasin(s)

   N/A

C. Initial Notification and Combination of Requests

1. Was an initial notification submitted to the Department?

   Yes
   List of submitted initial notification for the selected basin(s)/subbasin(s).

   Local Agency	Potential Basin(s)/Subbasin(s)

2. Does this application include a combination of requests?

   Yes

   If yes, describe:

   This application includes requests for distinct areas along the fringe of the Santa Maria Groundwater Basin in Santa Barbara County. These include the following: A) Southwestern Fringe, B) Orcutt Hill and Southern Fringe, C) Sisquoc River, D) Tepusquet Creek.

D. Required Documents for All Modifications

1. A copy of the statutory or other legal authority under which the requesting agency was created with specific citations to the provisions setting forth the duties and responsibilities of the agency.

Attachment(s):

• GSA Minute Order and Reso FINAL.pdf (1.3MB) Uploaded on 09/27/2018 at 02:21PM

2. A copy of the signed resolution adopted by the requesting agency formally initiating the boundary modification request process.

Attachment(s):

• Minute Order.pdf (38.4kB) Uploaded on 09/27/2018 at 12:54PM
• D2 Resolution to Submit BBM.pdf (547.8kB) Uploaded on 10/22/2018 at 01:24PM

3. A map of adequate scale (no greater than 1:24,000; e.g., 1:10,000 is not acceptable) showing the proposed modified basin boundary in relation to the existing Bulletin-118 basin boundary and the local agencies that are within or bordering the existing and proposed basin.

Attachment(s):

• D3.pdf (2.2MB) Uploaded on 09/28/2018 at 01:27PM

4. A GIS shapefile of the proposed modified groundwater basin boundaries. Download Existing B118 basin shape file | DWR Spatial Data Standards

Attachment(s):

• D4_Proposed_Revised.zip (28.2kB) Uploaded on 10/19/2018 at 09:15AM

5. A GIS shapefile of the political boundaries of any affected or adjacent local agency. Download water agency shape file

Attachment(s):

• D5.zip (310.4kB) Uploaded on 09/28/2018 at 09:54AM

6. Any information, if necessary, to enable DWR to satisfy the requirements of a responsible agency pursuant to the California Environmental Quality Act.

In review of CEQA, the Santa Barbara County Board of Supervisors, acting as the Santa Barbara County Water Agency Board of Directors, has made the determination that Basin Boundary adjustment does not constitute a "Project" under CEQA and is therefore not subject to CEQA.

Attachment(s):

• Minute Order.pdf (40.5kB) Uploaded on 09/28/2018 at 09:55AM

E. General Information

1. Describe the lateral boundaries of the alluvial aquifer or aquifers that form the groundwater basin and the definable bottom of the basin. The description must be in terms that are clear, definite, and sufficiently detailed to allow an authoritative map of the proposed basin boundaries to be plotted using the given description.

The following description of lateral boundaries is for the portion of the Santa Maria River Valley Groundwater Basin within Santa Barbara County. The remaining portion of the Basin outside of Santa Barbara County will be described in the boundary modification proposed by the County of San Luis Obispo. The proposed lateral boundary is delineated on the west and southwest by the Pacific Ocean, on the north by the boundary line between the Counties of Santa Barbara and San Luis Obispo, on the east by the San Rafael Mountains and the Santa Maria River Fault Zones, on the southwest by the Casmalia Hills, on the south by the Solomon Hills and the San Antonio Creek Valley Groundwater Basin, and aligning along the adjudicated boundary of the Santa Maria Valley Management Area. The bottom boundary of the subbasin is identified as the contact between the saturated sediments of Paso Robles/Careaga Formations at depths ranging from 600 to 2,500 feet and the underlying Monterey and/or Obispo Formations.

F. Notice and Consultation

1. List all local agencies and public water systems affected by the basin(s) modification request.

See attached.

Attachment(s):

• Affected Agencies and Public Water Systems.xlsx (11.1kB) Uploaded on 09/28/2018 at 01:32PM

2. Explain the methods used to identify interested local agencies and public water systems in the affected basin(s):

A list of interested local agencies and public water systems were identified and compiled through Santa Barbara County Water Agency's local knowledge, searches of the Santa Barbara County geographic information system database and Santa Barbara County Environmental Health Services public water system database, and through extensive consultation with San Luis Obispo County staff.

3. Provide information regarding the nature of consultations with affected or interested agencies. Attach and cite any copies of correspondences with local agencies and public water systems and/or any other persons or entities consulted.

See attached.

Attachment(s):

• F3 Nature of Consultations.pdf (3.8MB) Uploaded on 09/28/2018 at 02:27PM

4. Provide a summary of all public meetings at which the proposed boundary modification was discussed or considered by the requesting agency. Attach and cite any copies of agendas and notices published.

See attached.

Attachment(s):

• F4 meeting materials.pdf (14.6MB) Uploaded on 09/28/2018 at 02:20PM

5. Attach a copy of all comments regarding the proposed boundary modification received by the requesting agency and a summary of any responses made by the requesting agency.

See attached.

Attachment(s):

• F5.pdf (5.2MB) Uploaded on 09/28/2018 at 11:51AM

H. Local Support

1. Provide any evidence that sufficient information was provided to affected agencies and systems regarding the proposed boundary modification.

See attached.

Attachment(s):

• H1.pdf (3.8MB) Uploaded on 09/28/2018 at 11:41AM

2. Provide a list of all affected agencies and affected systems that submitted comments and/or documents in support or opposition to the proposed boundary. The agency submitting their support or opposition for a boundary modification must provide a copy of a resolution formally adopted by the decision-making body of the affected agency or system or a letter signed by an executive officer or other official with appropriate delegated authority who represents the agency or system. Attach copies of the resolution and/or signed letter detailing the support or opposition submitted.

There are no local agencies within the Santa Barbara County fringe areas, and these areas contribute negligible flow into the main Santa Maria River Valley Groundwater Basin. There was therefore little interest in this proposed modification. Comments were received from two entities: Flood Ranch Company (a public water system), and Tepusquet Canyon Crisis Committee (a local landowners group). Both entities were supportive - see attached.

Attachment(s):

• F5.pdf (5.2MB) Uploaded on 09/28/2018 at 11:53AM

3. Provide any evidence that rebuts any opposition to the proposed boundary modification.

No opposition to the proposed boundary modification was raised.

I. Hydrogeologic Conceptual Model

1. Principal aquifer units within requested basin.
2. Lateral boundaries of the proposed basin, including:
   1. Geologic features that significantly impede or impact groundwater flow.
   2. Aquifer characteristics that significantly impede or impact groundwater flow.
   3. Significant geologic and hydrologic features and conditions of the principle aquifer units, as appropriate, including information regarding the confined or unconfined nature of the aquifer, facies changes, truncation of units, the presence of faults or folds that impede groundwater flow, or other groundwater flow restricting features.
   4. Key surface water bodies, groundwater divides and significant recharge sources.
3. Recharge and discharge areas within the basin.
4. Definable bottom of the basin or subbasin.

The department may waive this requirement for an internal boundary modification if the requesting agency is able to demonstrate that the proposed boundary modification is unlikely to affect sustainable groundwater management.

The proposed boundary modification is unlikely to affect sustainable groundwater management. A brief hydrogeologic conceptual model is outlined in Attachment I. Additional details are included in Attachment J2.

Attachment(s):

• I Hydrogeologic Conceptual Model.pdf (14.7kB) Uploaded on 09/28/2018 at 03:10PM
• J2. Groundwater Basin Modification Request Report.pdf (38.9MB) Uploaded on 09/28/2018 at 03:11PM

J. Technical Studies for External Scientific Modifications

1. A qualified map that depicts the lateral boundaries of the aquifers that define the basin or subbasin.

See Attached

Attachment(s):

• J1.pdf (7.5MB) Uploaded on 09/28/2018 at 12:27PM

2. A technical study that provides subsurface data that demonstrates the vertical thickness and relevant physical properties of the alluvial aquifer or stacked series of alluvial aquifers.

See Attached

Attachment(s):

• J2. Groundwater Basin Modification Request Report.pdf (38.9MB) Uploaded on 09/28/2018 at 03:13PM
• Cleath and Associates 2004.pdf (7.8MB) Uploaded on 10/22/2018 at 01:28PM