B. Description of Proposed Boundary Modification

1. Short Description

   Jurisdictional modification of part of 3-049 and 3-018 to conform to service area boundary.
2. Type of basin boundary revision

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

   Currently, a section of the southeast Montecito Groundwater Basin (3-049), as delineated by Bulletin 118, is outside of the Montecito Water District's service area and within the Carpinteria Valley Water District's service area. This Jurisdictional boundary modification request is to revise the existing boundary to follow the service area boundary between the Montecito and Carpinteria Valley Water District in this section. The modification, which would impact less than one-square mile of basin, would promote and simplify implementation of groundwater management, and is supported by both Montecito and Carpinteria Valley Water Districts.

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

   • 3-018 CARPINTERIA
   • 3-049 MONTECITO
5. Provide the proposed name for the new basin(s) or subbasin(s)

   Not Applicable

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)
   Carpinteria Valley Water District	3-018 CARPINTERIA
   Montecito Water District	3-049 MONTECITO , 3-018 CARPINTERIA
   Carpinteria Valley Water District	3-018 CARPINTERIA

2. Does this application include a combination of requests?

   No

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):

• MWD Enabling Legislation Info.pdf (39.7kB) Uploaded on 04/23/2018 at 03:45PM

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

Attachment(s):

• Reso 2163 SGMA BasinBoundaryModification.pdf (97.7kB) Uploaded on 04/18/2018 at 10:59AM

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):

• Figure 1 WD and GW Basins.pdf (404.6kB) Uploaded on 02/14/2018 at 03:11PM
• Figure 1 Jurisdictional Boundaries.pdf (333.3kB) Uploaded on 07/23/2018 at 02:20PM

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

Attachment(s):

• Montecito_Carp_Basin_Bndy_Mod_GISData_20180205.zip (21.3kB) Uploaded on 07/10/2018 at 10:28AM

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

Attachment(s):

• MWD_Basin_Boundary_Mod_Political_Boundaries_20180508.zip (834.5kB) Uploaded on 05/08/2018 at 02:12PM

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, Basin Boundary modification does not constitute a "Project" under CEQA and is therefore not subject to CEQA. Given that the Basin Boundary adjustments do not meet the "Project" definition, there is no requirement to seek or make a finding for a Statutory or Categorical Exemption, nor provide any other CEQA treatment at all.

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 Montecito Groundwater Basin is approximately 9.8 square miles located on the South Coast of Santa Barbara County. It is roughly rectangular in shape with an east-west length of about 5 miles and a north-south width of about 2 miles. At the east end of the Basin lies the Toro Canyon Watershed. The Basin is located on the south flank of the east-west trending Santa Ynez Mountains and underlies the unincorporated town of Montecito. The Montecito Groundwater Basin is adjacent to and abuts the Carpinteria Valley Groundwater Basin to the east and the Santa Barbara Groundwater Basin to the west. The Basin is drained by several creeks that originate in the Santa Ynez Mountains and empty into the Pacific Ocean. The Basin is divided into three storage units that lie between east-west trending faults. Storage Unit 1 is from the consolidated bedrock of the Santa Ynez Mountains, south to the Arroyo Parida Fault, Storage Unit Number 2 is south from the Arroyo Parida Fault to the Montecito Fault, and Storage Unit Number 3 is south of the Montecito Fault to the offshore Rincon Thrust Fault. The degree to which these faults act as barriers to groundwater flow (or to sea water intrusion) is not well known. The Toro Canyon area is a north-south trending storage unit, partly separated from storage Units 1, 2, and 3 by consolidated rock. The boundary between the Montecito Groundwater Basin and the Santa Barbara Groundwater Basin to the west is non-structure related. The Boundary between the Toro Canyon Sub-Unit and the Carpinteria Valley Groundwater Basin to the east is arbitrary to the south and, in general, follows the alluvium of Toro Canyon Creek to the north. The Montecito Basin is an alluvial basin ranging from about 400 feet above sea level to about 900 feet below sea level at the coast. It has a maximum vertical thickness of about 900 feet. It is underlain by the consolidated rocks of the Santa Ynez Mountains. Water bearing alluvial deposits include the Quaternary Santa Barbara and Casitas Formations and alluvium.

F. Notice and Consultation

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

Montecito Water District Carpinteria Valley Water District County of Santa Barbara (Planning and Water Agency)

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

The requesting agency and consultant representatives have worked on water and groundwater related issues in the basin for water management and SGMA related issues. Therefore, they are familiar with the interested local agencies. In addition, the requesting agency has been conducting outreach and public education activities in anticipation of conducting SGMA processes and have developed a stakeholder list as part of those efforts. Finally, an internet search was conducted to identify any additional State or Federal agencies that may have an interest in the basin.

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.

The Montecito Water District has conducted coordination meetings with adjacent basin agencies (Carpinteria Valley Water District and the City of Santa Barbara) as part of Basin Boundary modification and GSA formation activities. These meetings included the following: February 16, 2017 - Meeting with Montecito Water District, Carpinteria Valley Water District July 12, 2017 - Meeting with Montecito Water District and Carpinteria Valley Water District August 16, 2017 - Meeting with Montecito Water District, Carpinteria Valley Water District, and DWR representatives. Uploaded attachments include an MOU Between Montecito and Carpinteria Valley Water Districts, a letter of support from Santa Barbara County Water Agency, a letter of support from the Carpinteria Valley Water District, and letters to affected property owners and affected agencies.

Attachment(s):

• SGMA MOU MWD-CVWD 7-18-17.pdf (309.4kB) Uploaded on 04/27/2018 at 10:47AM
• County Support Letter.pdf (334.9kB) Uploaded on 04/27/2018 at 10:49AM
• letter of support BBM CVWD-MWD wmap 2018.pdf (661.2kB) Uploaded on 05/01/2018 at 12:47PM
• Prop Own & Agen Let_.pdf (1.2MB) Uploaded on 06/27/2018 at 11:08AM

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.

November 16, 2017 SGMA Public Workshop - This was a general SGMA workshop at which the SGMA was explained and the District's plan for Basin Boundary Modification presented. The General Manager from Carpinteria Valley Water District was present, as was staff from the City of Santa Barbara Public Works Department. County of Santa Barbara representatives were also present. The meeting power point presentation is uploaded. August 23, 2017 Montecito Water District Board Meeting Update on BBM - The Basin Boundary Modification was covered as an informational item. Uploaded documents include the Board meeting agenda, minutes, and Basin Boundary Modification report. April 17, 2018 Montecito Water District Board Meeting. The Board considered and approved the Resolution to apply for Basin Boundary Modification. The Agenda, Board Letter, and Resolution are uploaded. May 14, 2018 Montecito Water District Operations Committee Meeting - A draft Basin Boundary Modification application and related documents were discussed and reviewed. The meeting was open to the public and members of the public were present. May 22, 2018 Montecito Water District Board of Directors Meeting at which at which a draft Basin Boundary Modification application and related documents were discussed and reviewed. The Agenda and Board Letter are uploaded. All meetings referenced above were conducted per the Brown Act.

Attachment(s):

• 20170823Board Meeting.pdf (330.9kB) Uploaded on 03/08/2018 at 03:22PM
• BBM News Letter.pdf (101.7kB) Uploaded on 06/19/2018 at 03:18PM
• MWD PPP Nov 16 2017_V2_revMWD2.pptx (16MB) Uploaded on 02/26/2018 at 04:08PM
• BBM Board Reso 04172018.pdf (176.3kB) Uploaded on 05/21/2018 at 04:15PM
• BBM 05222018.pdf (223.2kB) Uploaded on 05/21/2018 at 04:36PM
• Reso 2163 SGMA BasinBoundaryModification.pdf (97.7kB) Uploaded on 05/21/2018 at 04:22PM

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.

Attached are letters of support from the Santa Barbara County Water Agency and the Carpinteria Valley Water District. Also attached is a log of phone calls received from Agencies and the public along with responses provided.

Attachment(s):

• BBM comment sheet.pdf (55.2kB) Uploaded on 06/22/2018 at 09:43AM
• County Support Letter.pdf (334.9kB) Uploaded on 05/01/2018 at 12:50PM
• letter of support BBM CVWD-MWD wmap 2018.pdf (661.2kB) Uploaded on 05/01/2018 at 12:50PM

G. General Existing Groundwater Management

1. Explain how sustainable groundwater management exists or could likely be achieved in the basin:

Currently, the Montecito Water District operates the Basin in accordance with a Groundwater Management Plan which includes conjunctive use of groundwater with surface water supplies. The Montecito Groundwater Basin has been designated as medium priority by DWR and groundwater comprises a critical part of the basin's water supply portfolio. The basin has seen an escalation in the number of wells and groundwater extractions, especially during recent drought conditions. Therefore, SGMA implementation will help the Montecito Water District SGMA to better manage the resource. The District is well into the process of creating a GSA and has held multiple public workshops and Board meetings on the issue. It is anticipated that the GSA will be finalized by the Summer of 2018 and a Groundwater Sustainability Plan will be prepared thereafter. The proposed modification is for an area in which there is limited knowledge of hydrogeological connectivity and potential for sea water intrusion. Both the Montecito Water District and Carpinteria Valley Water District are committed to cooperative groundwater management (see uploaded MOU).

Attachment(s):

• SGMA MOU MWD-CVWD 7-18-17.pdf (309.4kB) Uploaded on 04/27/2018 at 11:21AM

2. Explain how the proposed boundary modification would affect the ability of adjacent groundwater basins to sustainably manage groundwater in those groundwater basins.

The area for which application is being made is located within the Montecito Groundwater Basin as defined by Bulletin 118, but within the Carpinteria Valley Water District service area. The proposed modification would move that portion to the Carpinteria Valley Groundwater Basin so that both Basins would coincide with the respective service areas. While there is not a definitive understanding of the physical connectivity between the two basins along the boundary, this modification will allow for more efficient management of each Basin, particularly since the Montecito Water District intends to implement SGMA in the Basin. Potential monitoring, reporting, allocations, and fees would be more efficiently administered by the responsible entity overlying the Basin. The uploaded MOU between the two districts establishes the intent of each to work cooperatively on issues of groundwater management and it is the intent of each to share groundwater data collected by each.

Attachment(s):

• SGMA MOU MWD-CVWD 7-18-17.pdf (309.4kB) Uploaded on 04/27/2018 at 09:54AM

3. Provide a historical summary of the sustainable management of groundwater levels in the proposed basin(s) or subbasin(s).

The District developed an AB3030 Groundwater Management Plan in 1998 which provides technical information and encourages local cooperation and management of the Basin (Uploaded). The GWMP estimates the components of the water budget. However, the installation of groundwater wells by property owners has increased significantly, especially during the recent drought, and private pumping quantities are not accurately known. The District maintains production and delivery records for all of the District wells and uses groundwater conjunctively with surface water in order to plan for periods of lower surface water and imported supplies. Groundwater use by private parties is appropriative and permitting of wells is through the Santa Barbara County Environmental Health Department. Since about 1983, the Montecito Water District has conducted a groundwater monitoring program which consists of bi-annual groundwater measurements of approximately 70 wells including in each of the Basins Storage areas. Hydrographs of wells in each of the Storage Units are uploaded. In general, the hydrographs illustrate a relatively quick response of water levels to both wet and dry conditions. During the recent drought, the Montecito Water District implemented water-use restrictions and allocation ordinances limiting allowable water use. However, increased extractions from private pumpers contributed to precipitous groundwater level declines. As a result, there was a precipitous decline in water levels (See Hydrographs 8P3, 9Q1, 17N1, and 23C4). During this period, imported and surface water supplies were also significantly restricted. Implementation of SGMA will help to ensure availability of groundwater during drought conditions.

Attachment(s):

• Mont Combined Hydros.pdf (103.3kB) Uploaded on 04/26/2018 at 04:38PM
• MWD GW Management Plan.pdf (1.6MB) Uploaded on 04/23/2018 at 04:36PM

4. Discuss potential impacts to state programs resulting from the proposed boundary modification, including, but not limited to, the California Statewide Groundwater Elevation Monitoring (CASGEM), Groundwater Management Plans developed pursuant to AB 3030, Groundwater Sustainability Plans developed pursuant to the Sustainable Groundwater Management Act, any applicable state or regional board plans, and other water management and land use programs.

Both the Montecito and Carpinteria Valley Water Districts have completed AB 3030 groundwater management plans. Both have groundwater monitoring programs for their basins. There is a single monitoring well in the portion of the Basins to be modified by this request, currently monitored by the CVWD. The uploaded MOU between the two districts establishes the intent of each to work cooperatively on issues of groundwater management and it is the intent of each to share groundwater data collected by each. Both the MWD and CVWD are CASGEM monitoring entities but neither have CASGEM wells located in the part of the Basin impacted by this request. The modification requested will have no impact to the CASGEM program in either Basin. No other state programs will be affected by the proposed modification.

Attachment(s):

• SGMA MOU MWD-CVWD 7-18-17.pdf (309.4kB) Uploaded on 04/27/2018 at 09:16AM

H. Local Support

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

In addition to the publicizing the Basin Boundary Modification request through public meetings, Board meetings, and Operations Committee meetings, a letter explaining the modification request was sent to affected agencies and affected property owners. Examples of these letters are attached.

Attachment(s):

• Prop Own & Agen Let_.pdf (1.2MB) Uploaded on 06/19/2018 at 03:38PM

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.

1. Santa Barbara County Water Agency Support Letter 2. Carpinteria Valley Water District Support Letter

Attachment(s):

• letter of support BBM CVWD-MWD wmap 2018.pdf (661.2kB) Uploaded on 05/01/2018 at 12:54PM
• County Support Letter.pdf (334.9kB) Uploaded on 04/23/2018 at 01:17PM

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

No comments of opposition were received.

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.

NA

Attachment(s):

• MGB Hydrogeo Concep Model Memo_1.pdf (226.3kB) Uploaded on 06/19/2018 at 03:49PM

L. Technical Studies for All Jurisdictional Modifications

1. A water management plan that covers or is in the immediate vicinity of the proposed basin or portion of the proposed basin and satisfies the requirement of Water Code sections 10753.7(a) or 10727 by attaching one of the following:
   1. An adopted groundwater management plan, a basin wide management plan, or other integrated regional water management program or plan.
   2. Management pursuant to an adjudication action.
   3. One or more technical studies that cover the relevant portion of a basin or subbasin and adjacent areas.

Attachment(s):

• MWD 2015 UWMP_Adopted_web5-16-17.pdf (8.8MB) Uploaded on 04/27/2018 at 01:11PM
• MWD GW Management Plan.pdf (1.6MB) Uploaded on 04/23/2018 at 04:36PM

2. A statement of the existing and planned coordination of sustainable groundwater management activities and responsibilities where required.

The Montecito Groundwater Basin is one of multiple basins on the south coast of Santa Barbara County. The agencies managing these basins share common sources of imported water (Cachuma Reservoir and State Water Project Water) and have collaborated for decades to manage water supplies. Both the City of Santa Barbara to the west of Montecito and Carpinteria Valley Water District to the east of Montecito have executed, or have received, MOUs for cooperative Basin management. The Montecito Water District is proceeding with plans to implement the Sustainable Groundwater Management Act and has executed an MOU with the Carpinteria Water District and has cooperated with and supported this Basin Boundary Modification request. According to the MOUs and historical practices, all sustainable management activities within the Montecito Groundwater Basin will be coordinated with the adjoining basins and agencies with overlying jurisdictions. Attached is the MOU with Carpinteria Valley Water District, and letters of support from Carpinteria Valley Water District and Santa Barbara County.

Attachment(s):

• County Support Letter.pdf (334.9kB) Uploaded on 05/10/2018 at 01:56PM
• letter of support BBM CVWD-MWD wmap 2018.pdf (661.2kB) Uploaded on 05/10/2018 at 01:56PM
• SGMA MOU MWD-CVWD 7-18-17.pdf (309.4kB) Uploaded on 05/10/2018 at 01:57PM