Manteca City Council
July 19, 2022

Electronic Communications
Outreach will also occur through e-mail communications to alert interested parties about the meeting notices, meeting summaries and updates to share information with interested parties in with accordance with SGMA. The e-blasts will include brief copy that directs recipients to the GWA website to access these materials for their reference and sharing as desired.

ATTACHMENT 2
14 Social Media
Although the GWA does not maintain social media platforms, many of the member GSAs have Twitter and Facebook platforms. The GSAs will receive quarterly social media calendars with compelling, consumer-friendly content for use on their platforms. The posts will help inform diverse audiences about the need for the groundwater sustainability plan, updates on the planning process and public meetings with links to the GWA website and applicable materials.

Media Relations
Engaging and informing the local media about the process will reinforce efforts to reach broader audiences. Media relations activities will include news releases to announce the GSP planning launch, other key milestones and public meetings.

Measure and Evaluate
The GWA’s stakeholder engagement and public outreach success will be evaluated against several of DWR’s guidelines as described in Guidance Document for Groundwater Sustainability Plan, Communications and Stakeholder Engagement and Collaborating for Success: Stakeholder Engagement for Sustainable Groundwater Management Act Implementation, a White Paper authored by the Clean Water Fund, Community Water Center and Union of Concerned Scientists. Supporting materials to measure and evaluate stakeholder engagement and public outreach include the following:
 Robust stakeholder list of interested parties that includes representatives from all beneficial uses/users as well as other diverse stakeholders and is continually updated and employed.  Description of the beneficial uses and users of groundwater in the Subbasin, including the land uses and property interests and other types of parties potentially affected by the GSP and the nature of consultation with those parties.
 Documentation showing local GSAs within the region were informed of and invited to participate in the GSP development effort.
 List of public meetings, planning meetings and stakeholder committee meetings held to discuss the GSP along with meeting notifications and agendas.
 Identification of opportunities for public engagement and discussion of how public input and response will be used.
 Meeting summaries and correspondence to show information-sharing occurred through open, multi-stakeholder dialogues between stakeholder groups for shared understanding of concerns, interests and needs.
 Summary of the advisory and stakeholder committee process to demonstrate the execution of formal mechanisms for the participation of stakeholders in a manner that reasonably addresses their needs.
 Planning documentation showing the flexibility to change and actively revise and/or update the stakeholder engagement plan as the needs of existing stakeholders evolved or as new stakeholders are identified.
 Documentation showing formal procedures exist to solicit and incorporate stakeholder feedback throughout the plan development and implementation.

ATTACHMENT 2
15 APPENDIX
Statutory Requirements for Outreach by Phase
The following table summarizes the SGMA’s statutory outreach requirements by phase for the GSP development process as provided on the DWR website. The final measurement and outreach report will demonstrate the GWA’s achievements to meeting the following activities through a comprehensive stakeholder engagement and public outreach program.

Timeframe Item
Prior to initiating plan
development

1. Statement of how interested parties may contact the GSA and participate in development and implementation of the plan submitted to DWR. (Sec. 353.6)

2. 3. Post same information on the website
Prior to GSP
development

1. Establish and maintain an interested persons list. (Sec. 10723.4)

2. 3. Prepare a written statement describing the manner in which interested parties may participate in GSP development and implementation. Statement must be provided to:
 Legislative body of any city and/or county within the geographic area of the plan
 Public Utilities Commission if the geographic area
includes a regulated public water system regulated by that Commission
 DWR
 Interested parties (Sec. 10723.4)
 The public
Prior to and with
GSP submission
 Record statements of issues and interests of beneficial users of basin groundwater including types of parties representing the interests and consultation process
 Lists of public meetings
 Inventory of comments and summary of responses
 Communication section in GSP (Sec. 354.10) that includes:
 Agency decision-making process
 Identification of public engagement opportunities and response process
 Description of process for inclusion
 Method for public information related to progress in
implementing the plan (status, projects, actions)
ATTACHMENT 2
16 90 days prior to GSP
Adoption Hearing(s)

1. Prior to Public Hearings for adoption or amendment of the GSP, the GWA must notify cities and/or counties of geographic area of the intent to adopt the plan 90 days in advance of adoption. Each GSA will need to individually adopt the GSP. (Sec. 10728.4)
90 days or less prior
to GSP Adoption
Hearings (Sec.
10728.4)

2. Prior to Public Hearings for adoption or amendment of the GSP, the GSP entities must:
 Consider and review comments
 Conduct consultation within 30 days of receipt with cities or counties so requesting
GSP Adoption or
Amendment

1. GSP must be adopted or amended at Public Hearing(s). 60 days after plan
submission

1. 60-day comment period for plans under submission to DWR.

Comments will be used to evaluate the submission. (Sec. 353.8) Prior to adoption of
fees

1. Public meeting required prior to adoption of or an increase to fees. Oral or written presentations may be made as part of the meeting. (Sec. 10730). Public notice shall include:
 Time and place of meeting
 General explanation of matter to be considered
 Statement of availability for data required to initiate or amend such fees
 Public posting on Agency Website and provision by mail to interested parties of supporting data (at least 20 days in advance)
Mailing lists for interested parties are valid for 1 year from date of request and may be renewed by written request of the parties on or before April 1 of each year
 Includes procedural requirements per Government Code, Section 6066
Prior to conducting a fee
adoption hearing

1. Must publish notices in a newspaper of general circulation as prescribed
 Publication shall be once a week for two successive weeks.

Two publications in a newspaper published once a week or more often, with at least five days intervening between the respective publication dates not counting such publication dates, are sufficient
 The period of notice begins the first day of publication and terminates at the end of the 14th day, (which includes the first day)
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Groundwater Sustainability Plan
Complete Appendices November 2019
APPENDIX 1-I.

PUBLIC COMMENTS RECEIVED
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Groundwater Sustainability Plan
Complete Appendices November 2019
Public Comments Received on the Draft Groundwater Sustainability Plan • California Department of Fish and Wildlife, North Central Region • California Poultry Federation
• California Sportfishing Protection Alliance, including comments by Greg Kamman (Kamman Hydrology & Engineering, Inc.)
• Collective comments by The Nature Conservancy, Audubon California, Clean Water Action, Clean Water Fund, American Rivers, and Union of Concerned Scientists • Collective comments by The League of Women Voters of San Joaquin County; Environmental Justice Coalition for Water; Sierra Club, Delta Sierra Group; Puentes; and Restore the Delta • Cosumnes Subbasin
• East Bay Municipal Utility District (EBMUD)
• Jane Wagner-Tyack (Communication Consultant)
• Larry Walker Associates, on behalf of agricultural interests • North San Joaquin Water Conservation District
• Restore the Delta
• Sierra Club, Delta-Sierra Group
• South San Joaquin GSA
• Stockton East Water District
• Terra Land Group, LLC
• The Freshwater Trust, on behalf of Northern Delta GSA and associate member Staten Island-Conservation farms and ranches
• The Nature Conservancy
• The Wine Group
• Tracy Subbasin
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4640 SPYRES WAY, SUITE 4 I MODESTO, CA 95356 I PHONE: (209) 576-6355 I FAX: (209) 576-6119 I WWW.CPIF.ORG I
I
August 22, 2019
Eastern San Joaquin Groundwater Authority
1810 E. Hazelton A venue
P.O. Box 1810
Stockton, California 95201
cl o info@esj groundwater. org
Ladies and Gentlemen:

The California Poultry Federation ("CPF") is pleased to submit these comments on the Eastern San Joaquin Groundwater Sub basin draft Groundwater Sustainability Plan (hereinafter the "Draft GSP"). CPF represents all parts of the poultry industry, including growers, hatchers, breeders, and processors working with chickens, turkeys, ducks, and game birds. For all those segments, water is essential for nutrition as well as maintaining safe and sanitary conditions. CPF therefore supports effective measures to assure reliable water supplies.

In this regard, CPF commends the Draft GSP for emphasizing projects to augment yield and increase recharge. Such measures are essential for "maintain[ing] an economically-viable groundwater resource for the beneficial use of the people of the Eastern San Joaquin Sub basin." We encourage the Eastern San Joaquin Groundwater Authority to continue identifying and implementing additional measures to increase water supplies.

CPF appreciates your consideration of these comments. Please contact me if you need any additional information.

Very truly yours,
� m�

BILL MATTOS
President

EXECUTIVE COMMITTEE MEMBERS AND OFFICERS
TOM BOWER, FOSTER FARMS - CHAIRMAN j MATT JUNKEL, PETALUMA POULTRY - VICE CHAIRMAN

DALTON RASMUSSEN, SQUAB PRODUCERS OF CALIFORNIA - SECRETARY /TREASURER I DAVID PITMAN, PITMAN FAMILY FARMS - PAST CHAIRMAN BILL MATTOS. CALIFORNIA POULTRY FEDERATION - PRESIDENT
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Law Offices of
THOMAS N. LIPPE, APC
201 Mission Street Telephone: 415-777-5604
12th Floor Facsimile: 415-777-5606
San Francisco, California 94105 Email: [email protected] August 21, 2019
Eastern San Joaquin Groundwater Authority
1810 E. Hazelton Avenue
P. O. Box 1810
Stockton, CA 95201
By email to [email protected]
Re: California Sportfishing Protection Alliance Comments on the Eastern San Joaquin Draft Groundwater Sustainability Plan.

Dear Sir of Madam:

This office represents the California Sportfishing Protection Alliance (CSPA) regarding your review and adoption of the Eastern San Joaquin Draft Groundwater Sustainability Plan (Plan).

CSPA objects to your adoption of the Plan because it does not meet the requirements of the Sustainable Groundwater Management Act or the GSP Emergency Regulations at Title 23, Cal.

Code Regs. section 350 et seq. (GSP Rules), as more fully explained in comments that will be submitted by geologist Greg Kamman under separate cover by August 25, 2019.

The Plan does not satisfy GSP Rule 355.4(b)(1) because the Plan’s description of the sustainability goal, undesirable results, minimum thresholds, measurable objectives, and interim milestones are not reasonable or supported by the best available information and best available science.

The Plan does not satisfy GSP Rule 355.4(b)(3) because the sustainable management criteria and projects and management actions identified in the plan are not commensurate with the level of understanding of the basin setting, based on the level of uncertainty, as reflected in the Plan.

The Plan does not satisfy GSP Rule 355.4(b)(5) because the Plan does not contain or present substantial evidence to conclude that the projects and management actions identified to achieve sustainable yield are effective or feasible or not likely to prevent undesirable results or to ensure that the basin is operated within its sustainable yield.

These deficiencies are described in more detail in Mr. Kamman’s comments.

CSPA urges the Authority to not adopt the Plan in its current form; to revise the draft Plan

ATTACHMENT 2
Eastern San Joaquin Groundwater Authority
Re California Sportfishing Protection Alliance Comments on the Eastern San Joaquin Draft Groundwater Sustainability Plan
August 21, 2019

to remedy these informational deficiencies; and to recirculate the revised Plan for public comment.

Thank you for your attention to this matter.

Very Truly Yours,
Thomas N. Lippe
T:\TL\Stan Groundwater\Administrative Proceedings\LOTNL Docs\AD001b ESJGA.wpd

ATTACHMENT 2
Eastern San Joaquin Subbasin GSP Public Draft
Summary of Public Comments and Responses
Comment # Commenter Commenter
Organization Page Number Section, Figure, or Table Number Sentence Starts with, "… Comment 1 Tom Lippe
California
Sportfishing
Protection Alliance
CSPA objects to your adoption of the Plan because it does not meet the requirements of the Sustainable Groundwater Management Act or the GSP Emergency Regulations at Title 23, Cal. Code Regs. section 350 et seq. (GSP Rules), as more fully explained in comments that will be submitted by geologist Greg Kamman under separate cover by August 25, 2019
2 Tom Lippe
California
Sportfishing
Protection Alliance
The Plan does not satisfy GSP Rule 355.4(b)(1) because the Plan’s description of the sustainability goal, undesirable results, minimum thresholds, measurable objectives, and interim milestones are not reasonable or supported by the best available information and best available science.
3 Tom Lippe
California
Sportfishing
Protection Alliance
The Plan does not satisfy GSP Rule 355.4(b)(3) because the sustainable management criteria and projects and management actions identified in the plan are not commensurate with the level of understanding of the basin setting, based on the level of uncertainty, as reflected in the Plan.
4 Tom Lippe
California
Sportfishing
Protection Alliance
The Plan does not satisfy GSP Rule 355.4(b)(5) because the Plan does not contain or present substantial evidence to conclude that the projects and management actions identified to achieve sustainable yield are effective or feasible or not likely to prevent undesirable results or to ensure that the basin is operated within its sustainable yield.

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ATTACHMENT 2
Kamman Hydrology & Engineering, Inc.
539 Bret Harte Road, San Rafael, CA 94901
Telephone: (415) 491-9600
Facsimile: (415) 680-1538
E-mail: [email protected]
August 23, 2019
Eastern San Joaquin Groundwater Authority
1810 E. Hazelton Avenue
P.O. Box 1810
Stockton, CA 95201
Via email: [email protected]
Subject: Review of on Draft Groundwater Sustainability Plan Eastern San Joaquin Groundwater Subbasin
Dear Sir/Madame:

I am a hydrologist with over thirty years of technical and consulting experience in the fields of geology, hydrology, and hydrogeology. I have been providing professional hydrology and geomorphology services throughout California since 1989 and routinely manage and lead projects in the areas of surface- and groundwater hydrology, water supply, water quality assessments, water resources management, and geomorphology. A copy of my resume is attached.

On behalf of the California Sportfishing Protection Alliance, I have been retained by the Law Offices of Thomas N. Lippe, APC to review and evaluate the Draft Groundwater Sustainability Plan (GSP) for the Eastern San Joaquin Groundwater Subbasin (ESJGB), especially as it pertains to groundwater interaction with the Stanislaus River. Based on my review, it is my opinion that the GSP is deficient in many areas. The rationale for this opinion is based on the findings presented below.

1. Section 2.1.9.2.2 of the GSP (page 2-49) is entitled, Regional Historic Groundwater Flow and Surface Water Interaction. There is no presentation or reference to historic groundwater interaction with surface water in this section of the GSP.

2. Section 354.16 of the GSP Regulations stipulates that each plan describe current and historic groundwater conditions in the basin based on the best available information. With regard to Section 2.2.6 of the GSP (Interconnected Surface Water Systems), I would like you to be aware of a study completed by Kamman Hydrology & Engineering, Inc.1
, which delineates subterranean streams and
Potential Stream Depletion Areas (PSDA) along the Stanislaus River bordering the south side of the ESJGB. PSDA’s are areas where groundwater pumping

1 Kamman Hydrology & Engineering, Inc., 2018, Delineating subterranean streams and Potential Stream Depletion Areas, Lower Stanislaus and Tuolumne River Watershed. Draft Technical Memorandum prepared for: Law Offices of Thomas N. Lippe, APC, July 23, 9p. and 15 sheets.

ATTACHMENT 2
2 could potentially cause stream depletion. This report and associated maps are attached for reference and integration into Section 2.2.6 of the GSP.

3. Section 2.2.6 of the GSP (page 2-97 to 2-99) also introduces Figure 2-65 (attached as Exhibit A), which shows gaining streams in blue where groundwater discharges to rivers, losing streams in red where streams lose water to the groundwater system, and mixed streams (gaining or losing less than 75 percent of the time) in orange. This analysis was based on modeling results from the historical calibration of the East San Joaquin Water Resources Model (ESJWRM) for approximately 900 stream nodes in the Eastern San Joaquin Subbasin. The historical model calibration period covers the water years 1996-2015. Based on the Cumulative Departure from Mean Precipitation curve presented in Figure 2-71 (pg. 2-109 of GSP), the years 1996-2015 reflect a dry period, as there is a net decrease in approximately 17-inches of precipitation (i.e., change from +7 [1996] to -10 inches [2015] in the cumulative departure curve). This section of the GSP only presents a description of historical (and dry) interconnected surface water conditions. Section 354.16 of the California Code of Regulations (Regulations) stipulates that each Plan shall provide a description of current and historical groundwater conditions in the basin. The GSP fails to describe the current conditions of the interconnected surface water system in the basin.

4. Section 2.2.6 of the GSP (Interconnected Surface Water Systems; page 2-97 to 2- 99) also presents Figure 2-66 (attached as Exhibit B), which is entitled, Interconnected and Disconnected Streams. The GSP states that Stream connectivity was analyzed by comparing monthly groundwater elevations from the historical calibration of the ESJWRM to streambed elevations along the streams represented in the ESJWRM. Exhibit B shows the locations where streams are interconnected at least 75 percent of the time (shown in blue) or disconnected (shown in green). Section 351 of the Regulations defines “interconnected surface water” as surface water that is hydraulically connected at any point by a continuous saturated zone to the underlying aquifer and the overlying surface water is not completely depleted. The GSP (pg. 2-97) states that interconnected surface waters may be either gaining or losing, wherein the surface water feature itself is either gaining water from the aquifer system or losing water to the aquifer system. Exhibit C (attached) is taken from DWR’s water budget BMP guidance document2
and illustrates the relationship between
surface water and groundwater for gaining, losing and disconnected streams. Per this diagram, for a stream to be gaining, it must be hydraulically connected to the aquifer. In many instances, a losing stream may also be in hydraulic connection to the aquifer. Losing streams may become disconnected seasonally or during drought periods in response to a falling water table. There are inconsistencies between the results presented in Exhibits A and B where areas delineated as gaining streams are also identified as being disconnected. A good example of this

2 California Department of Water Resources, 2016, Best Management Practices for the Sustainable Management of Groundwater, Water Budget BMP. December, 53p.

ATTACHMENT 2
3 is the upstream portion of the Stanislaus River located in the southeast corner of the basin. These inconsistencies should be corrected or explained. In addition, the stream connectivity presented in Exhibit B is for historic conditions – the current conditions should also be presented per Regulations.

5. The GSP Regulations define “groundwater dependent ecosystem” (GDE) as ecological communities or species that depend on groundwater emerging from aquifers or on groundwater occurring near the ground surface. Section 354.16 of the Regulations stipulate that Plans identify (current and historic) GDEs within the basin, utilizing data available from the Department, as specified in Section 353.2, or the best available information. As stated on page 2-100, the GSP identifies GDEs within the Subbasin based on determining the areas where vegetation is dependent on groundwater. The GSP presents a methodology where the Natural Communities Commonly Associated with Groundwater (NCCAG) database, developed by DWR, CDFW and The Nature Conservancy (TNC), is used to identify vegetation communities and wetlands that are dependent on groundwater. Figure 2-67 of the GSP (attached as Exhibit D) presents the NCCAG within the basin. The GSP then describes a methodology by which NCCAG’s with alternate water supplies are excluded from consideration as GDEs based on the following criteria:
a. Depth to groundwater greater than 30 feet;
b. areas within 150 feet of managed wetlands that receive supplemental water;
c. areas within 50 feet of irrigated agriculture;
d. areas within 150 feet of perennial surface water bodies, and e. areas removed based on stakeholder comment.

The resulting areas identified as GDEs within the basin based on these criteria are shown in Figure 2-69 of the GSP (attached as Exhibit E).

There are two major problems with the GSP’s method for delineation of GDEs.

First, the GSP method only considers the presence of vegetation communities and wetlands in the determination. GSP Regulations stipulate that “species” dependent on groundwater should also be considered. Thus, the analysis should also take into consideration the presence of fish and wildlife species that rely on riparian wetlands and/or flow in rivers influenced by gaining reaches. The Nature Conservancy refers to these species as Environmental Surface Water Beneficial Users and has prepared a list of freshwater species located within each groundwater basin in California. These lists are posted at their website3 specifically for GSAs and others to better evaluate the impacts of groundwater management on environmental beneficial users of surface water in GSPs. This best available science should be integrated into the determination of GDEs.

3 https://groundwaterresourcehub.org/sgma-tools/environmental-surface-water-beneficiaries/ ATTACHMENT 2
4 The second problem I see in the GSP methodology is the failure to acknowledge that GDEs may depend on shallow groundwater regardless of the presence of alternative water sources. For example, wetlands within or adjacent to irrigated agriculture may not rely on that irrigation for survival; if they did, we would expect to find wetlands growing in all irrigated lands. In addition, the presence and sustainability of perennial surface water in Central Valley Rivers is controlled by many factors (e.g., groundwater inflow, reservoir operations, irrigation drainage, etc.). Modeling results presented in the GSP indicate significant contributions of groundwater flow to “gaining” reaches of the Stanislaus River (see Exhibit A). The riparian and wetland vegetation bordering these gaining reaches are surely sustained to some degree by this groundwater inflow to the river and the shallow groundwater conditions that likely accompany gaining reaches. The interconnected condition is also likely influenced significantly by seasonal and long-term wet and dry cycles. However, the GSP does not quantify the relative spatial or temporal contributions of groundwater supply to riparian habitats. Instead, the GPS simply dismisses these habitats as GDE’s under the assumption that perennial flow is sustained through the summer by agricultural deliveries or tailwater. Therefore, it is my opinion that the process of elimination of GDEs as presented in the GSP is seriously flawed and does not correctly recognize or delineate GDEs in the basin.

6. One of the most important outcomes of the GSP is the determination of sustainable yield (sustainability goal) for the basin. Section 2.3.6 (pg. 2-133) of the GSP states that, “The sustainable conditions scenario is based on the projected conditions scenario modified by lowering groundwater production across the model domain.” This section of the GSP then provides some qualitative statements about future supplies, demands and uncertainties in water budget assumptions and numerical modeling. Although the sustainable yield of the basin is determined to be 715,000 AF/yr +/- 10 percent, and a 78,000 AF/yr reduction in groundwater use is needed to achieve sustainability, there is no detailed explanation on how these numbers were determined. Per Section 354.24 of the GSP Regulations, “The Plan shall include a description of the sustainability goal, including information from the basin setting used to establish the sustainability goal, etc.” As written, the GSP does not provide the reader with a clear and detailed explanation on how the sustainable yield figure was derived and if climate change predictions were factored into the quantification. This omission makes it impossible to review and comment on the reliability of the sustainable yield or required reduction figures for the basin under existing or future conditions. Therefore, the draft GSP should be revised to include this information and recirculated for public comment.

7. Because the Subbasin is in overdraft, the GSP has identified 23 projects to reduce overdraft conditions and meet long-term water demands and sustainability goals.

There are some projects focused on conservation and reuse of reclaimed water, but the majority simply reduce local groundwater demand by providing access to surface water supplies. These projects are limited in geographic area and are ATTACHMENT 2
5 intended to provide local solutions. However, from the perspective of a full basin water budget, shifting the reliance from groundwater to surface water supplies may not generate the full benefits anticipated as provided in the project descriptions. This is because diverting and reducing stream flows will lead to reductions in groundwater recharge in other areas within or beyond the basin, via reduced water available for stream infiltration or other uses of stream diversions that contribute to recharge. As required in Section 354.44 of the Regulations, the GSP does not provide a full and comprehensive quantification of demand reduction in response to project implementation – this would require deriving a basin-scale water budget accounting that incorporates project actions. This analysis would also inform the evaluation, as required under Section 355.4 of the GSP Regulations, of Plan/project feasibility and undesireable results (e.g., ecological impacts) associated with increased diversion and use of surface water supplies.

Stated another way, I’m concerned that the GSP has not demonstrated that the Project Actions will be effective in achieving stated reductions in groundwater use and avoiding undesirable results. For example, Project 2, the SEWD Surface Water Implementation Expansion Project (SEWD), would require landowners adjacent to surface water conveyance systems (rivers or pipelines) to utilize surface water as part of the SGMA implementation. This would increase surface water usage by about 18,000 to 20,000 AF/year with in-lieu groundwater recharge benefits. This project relies on water from New Hogan Reservoir (Calaveras River water) and New Melones Reservoir (Stanislaus River water). Although the project could reduce groundwater use, there is no analysis provided on how the project would affect surface and ground water resources downstream of the two reservoirs. If this project reduced downstream flows, it could result in depleted surface water supplies, reduced groundwater recharge from the rivers as well as adverse impacts to riparian vegetation and environmental surface water beneficial users.

Similarly, I’m concerned about the assumed feasibility of some projects achieving the desired goal. For example, the groundwater recharge Projects 11 and 12 are anticipated to each recharge 8,000 AF/yr through the construction and operation of independent 10-acre recharge ponds. This equates to recharging 800 feet of water at each pond site between December 1 and June 30th of each year or 3.78 feet daily for the 212 day period. I am skeptical about achieving this level of recharge given the uncertainties in water availability during dry years, operations that would be required to maintain ponding of sufficient depth and duration, and maintaining basin infiltration rates given the likely accumulation of fine grained material that reduces basin permeability. This example demonstrates how the GSP fails to demonstrate how these project can be accomplished in a successful manner under a variety of rainfall and runoff conditions.

ATTACHMENT 2
6 Please feel free to contact me with any questions regarding the material and conclusions contained in this letter.

Sincerely,
Greg Kamman, PG, CHG
Principal Hydrologist
ATTACHMENT 2
Eastern San Joaquin Subbasin GSP Public Draft
Summary of Public Comments and Responses
Comment
#
Commenter Commenter
Organization
Page
Number
Section, Figure,
or Table Number
Sentence
Starts
with, "…
Comment
1 Greg
Kamman
California
Sportfishing
Protection
Alliance
2-49 Section 2.1.9.2.2 Section 2.1.9.2.2 of the GSP (page 2-49) is entitled, Regional Historic Groundwater Flow and Surface Water Interaction. There is no presentation or reference to historic groundwater interaction with surface water in this section of the GSP.
2 Greg
Kamman
California
Sportfishing
Protection
Alliance
2-97 Section 2.2.6 Section 354.16 of the GSP Regulations stipulates that each plan describe current and historic groundwater conditions in the basin based on the best available information. With regard to Section 2.2.6 of the GSP.(Interconnected Surface Water Systems), I would like you to be aware of a study completed by Kamman Hydrology & Engineering, Inc. in 2018 , which delineates subterranean streams and Potential Stream Depletion Areas (PSDA) along the Stanislaus River bordering the south side of the ESJGB. PSDA’s are areas where groundwater pumping could potentially cause stream depletion. This report and associated maps are attached for reference and integration into Section 2.2.6 of the GSP.

Access KHE's 2018 report at this link:
https://www.dropbox.com/s/zzqnn6ifsbahx5p/PSDA-mapping-TechMemorandum_v1%2Bquads.pdf?dl=0 3 Greg
Kamman
California
Sportfishing
Protection
Alliance
2-97 Section 2.2.6 Section 2.2.6 of the GSP (page 2-97 to 2-99) also introduces Figure 2-65 (attached as Exhibit A), which shows gaining streams in blue where groundwater discharges to rivers, losing streams in red where streams lose water to the groundwater system, and mixed streams (gaining or losing less than 75 percent of the time) in orange. This analysis was based on modeling results from the historical calibration of the East San Joaquin Water Resources Model (ESJWRM) for approximately 900 stream nodes in the Eastern San Joaquin Subbasin. The historical model calibration period covers the water years 1996-2015. Based on the Cumulative Departure from Mean Precipitation curve presented in Figure 2- 71 (pg. 2-109 of GSP), the years 1996-2015 reflect a dry period, as there is a net decrease in approximately 17-inches of precipitation (i.e., change from +7 [1996] to -10 inches [2015] in the cumulative departure curve). This section of the GSP only presents a description of historical (and dry) interconnected surface water conditions. Section 354.16 of the California Code of Regulations (Regulations) stipulates that each Plan shall provide a description of current and historical groundwater conditions in the basin. The GSP fails to describe the current conditions of the interconnected surface water system in the basin.

ATTACHMENT 2
Eastern San Joaquin Subbasin GSP Public Draft
Summary of Public Comments and Responses
Comment
#
Commenter Commenter
Organization
Page
Number
Section, Figure,
or Table Number
Sentence
Starts
with, "…
Comment
4 Greg
Kamman
California
Sportfishing
Protection
Alliance
2-97 Section 2.2.6 Section 2.2.6 of the GSP (Interconnected Surface Water Systems; page 2-97 to 2- 99) also presents Figure 2-66 (attached as Exhibit B), which is entitled, Interconnected and Disconnected Streams. The GSP states that Stream connectivity was analyzed by comparing monthly groundwater elevations from the historical calibration of the ESJWRM to streambed elevations along the streams represented in the ESJWRM. Exhibit B shows the locations where streams are interconnected at least 75 percent of the time (shown in blue) or disconnected (shown in green). Section 351 of the Regulations defines “interconnected surface water” as surface water that is hydraulically connected at any point by a continuous saturated zone to the underlying aquifer and the overlying surface water is not completely depleted. The GSP (pg. 2-97) states that interconnected surface waters may be either gaining or losing, wherein the surface water feature itself is either gaining water from the aquifer system or losing water to the aquifer system. Exhibit C (attached) is taken from DWR’s water budget BMP guidance document and illustrates the relationship between surface water and groundwater for gaining, losing and disconnected streams.

Per this diagram, for a stream to be gaining, it must be hydraulically connected to the aquifer. In many instances, a losing stream may also be in hydraulic connection to the aquifer. Losing streams may become disconnected seasonally or during drought periods in response to a falling water table. There are inconsistencies between the results presented in Exhibits A and B where areas delineated as gaining streams are also identified as being disconnected. A good example of this is the upstream portion of the Stanislaus River located in the southeast corner of the basin. These inconsistencies should be corrected or explained. In addition, the stream connectivity presented in Exhibit B is for historic conditions – the current conditions should also be presented per Regulations.
5 Greg
Kamman
California
Sportfishing
Protection
Alliance
2-100 Sections 2.2.7,

2.2.8, and 2.2.9
The GSP Regulations define “groundwater dependent ecosystem” (GDE) as ecological communities or species that depend on groundwater emerging from aquifers or on groundwater occurring near the ground surface. Section 354.16 of the Regulations stipulate that Plans identify (current and historic) GDEs within the basin, utilizing data available from the Department, as specified in Section 353.2, or the best available information. As stated on page 2-100, the GSP identifies GDEs within the Subbasin based on determining the areas where ATTACHMENT 2
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vegetation is dependent on groundwater. The GSP presents a methodology where the Natural Communities Commonly Associated with Groundwater (NCCAG) database, developed by DWR, CDFW and The Nature Conservancy (TNC), is used to identify vegetation communities and wetlands that are dependent on groundwater. Figure 2-67 of the GSP (attached as Exhibit D) presents the NCCAG within the basin. The GSP then describes a methodology by which NCCAG’s with alternate water supplies are excluded from consideration as GDEs based on the following criteria:
a. Depth to groundwater greater than 30 feet;
b. areas within 150 feet of managed wetlands that receive supplemental water; c. areas within 50 feet of irrigated agriculture;
d. areas within 150 feet of perennial surface water bodies, and e. areas removed based on stakeholder comment.

The resulting areas identified as GDEs within the basin based on these criteria are shown in Figure 2-69 of the GSP (attached as Exhibit E).

There are two major problems with the GSP’s method for delineation of GDEs.

First, the GSP method only considers the presence of vegetation communities and wetlands in the determination. GSP Regulations stipulate that “species” dependent on groundwater should also be considered. Thus, the analysis should also take into consideration the presence of fish and wildlife species that rely on riparian wetlands and/or flow in rivers influenced by gaining reaches. The Nature Conservancy refers to these species as Environmental Surface Water Beneficial Users and has prepared a list of freshwater species located within each groundwater basin in California. These lists are posted at their website specifically for GSAs and others to better evaluate the impacts of groundwater management on environmental beneficial users of surface water in GSPs. This best available science should be integrated into the determination of GDEs.

The second problem I see in the GSP methodology is the failure to acknowledge that GDEs may depend on shallow groundwater regardless of the presence of alternative water sources. For example, wetlands within or adjacent to irrigated agriculture may not rely on that irrigation for survival; if they did, we would ATTACHMENT 2
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expect to find wetlands growing in all irrigated lands. In addition, the presence and sustainability of perennial surface water in Central Valley Rivers is controlled by many factors (e.g., groundwater inflow, reservoir operations, irrigation drainage, etc.). Modeling results presented in the GSP indicate significant contributions of groundwater flow to “gaining” reaches of the Stanislaus River (see Exhibit A). The riparian and wetland vegetation bordering these gaining reaches are surely sustained to some degree by this groundwater inflow to the river and the shallow groundwater conditions that likely accompany gaining reaches. The interconnected condition is also likely influenced significantly by seasonal and long-term wet and dry cycles. However, the GSP does not quantify the relative spatial or temporal contributions of groundwater supply to riparian habitats. Instead, the GPS simply dismisses these habitats as GDE’s under the assumption that perennial flow is sustained through the summer by agricultural deliveries or tailwater. Therefore, it is my opinion that the process of elimination of GDEs as presented in the GSP is seriously flawed and does not correctly recognize or delineate GDEs in the basin.
6 Greg
Kamman
California
Sportfishing
Protection
Alliance
2-133 Section 2.3.6 One of the most important outcomes of the GSP is the determination of sustainable yield (sustainability goal) for the basin. Section 2.3.6 (pg. 2-133) of the GSP states that, “The sustainable conditions scenario is based on the projected conditions scenario modified by lowering groundwater production across the model domain.” This section of the GSP then provides some qualitative statements about future supplies, demands and uncertainties in water budget assumptions and numerical modeling. Although the sustainable yield of the basin is determined to be 715,000 AF/yr +/- 10 percent, and a 78,000 AF/yr reduction in groundwater use is needed to achieve sustainability, there is no detailed explanation on how these numbers were determined. Per Section 354.24 of the GSP Regulations, “The Plan shall include a description of the sustainability goal, including information from the basin setting used to establish the sustainability goal, etc.” As written, the GSP does not provide the reader with a clear and detailed explanation on how the sustainable yield figure was derived and if climate change predictions were factored into the quantification. This omission makes it impossible to review and comment on the reliability of the sustainable yield or required reduction figures for the basin ATTACHMENT 2
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under existing or future conditions. Therefore, the draft GSP should be revised to include this information and recirculated for public comment. 7 Greg
Kamman
California
Sportfishing
Protection
Alliance
6-2 Section 6.2.3 Because the Subbasin is in overdraft, the GSP has identified 23 projects to reduce overdraft conditions and meet long-term water demands and sustainability goals. There are some projects focused on conservation and reuse of reclaimed water, but the majority simply reduce local groundwater demand by providing access to surface water supplies. These projects are limited in geographic area and are intended to provide local solutions. However, from the perspective of a full basin water budget, shifting the reliance from groundwater to surface water supplies may not generate the full benefits anticipated as provided in the project descriptions. This is because diverting and reducing stream flows will lead to reductions in groundwater recharge in other areas within or beyond the basin, via reduced water available for stream infiltration or other uses of stream diversions that contribute to recharge. As required in Section 354.44 of the Regulations, the GSP does not provide a full and comprehensive quantification of demand reduction in response to project implementation – this would require deriving a basin-scale water budget accounting that incorporates project actions. This analysis would also inform the evaluation, as required under Section 355.4 of the GSP Regulations, of Plan/project feasibility and undesireable results (e.g., ecological impacts) associated with increased diversion and use of surface water supplies.

Stated another way, I’m concerned that the GSP has not demonstrated that the Project Actions will be effective in achieving stated reductions in groundwater use and avoiding undesirable results. For example, Project 2, the SEWD Surface Water Implementation Expansion Project (SEWD), would require landowners adjacent to surface water conveyance systems (rivers or pipelines) to utilize surface water as part of the SGMA implementation. This would increase surface water usage by about 18,000 to 20,000 AF/year with in-lieu groundwater recharge benefits. This project relies on water from New Hogan Reservoir (Calaveras River water) and New Melones Reservoir (Stanislaus River water).

Although the project could reduce groundwater use, there is no analysis provided on how the project would affect surface and ground water resources downstream of the two reservoirs. If this project reduced downstream flows, it ATTACHMENT 2
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could result in depleted surface water supplies, reduced groundwater recharge from the rivers as well as adverse impacts to riparian vegetation and environmental surface water beneficial users.

Similarly, I’m concerned about the assumed feasibility of some projects achieving the desired goal. For example, the groundwater recharge Projects 11 and 12 are anticipated to each recharge 8,000 AF/yr through the construction and operation of independent 10-acre recharge ponds. This equates to recharging 800 feet of water at each pond site between December 1 and June 30th of each year or 3.78 feet daily for the 212 day period. I am skeptical about achieving this level of recharge given the uncertainties in water availability during dry years, operations that would be required to maintain ponding of sufficient depth and duration, and maintaining basin infiltration rates given the likely accumulation of fine grained material that reduces basin permeability. This example demonstrates how the GSP fails to demonstrate how these project can be accomplished in a successful manner under a variety of rainfall and runoff conditions.

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ATTACHMENTS
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Exhibit A
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Exhibit B
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Exhibit C
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Exhibit D
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Exhibit E
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Kamman Resume
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Greg Kamman, PG, CHG
Principal Hydrologist
539 Bret Harte Road, San Rafael, CA 94901
Telephone: (415) 491-9600 Fax: (415) 680-1538 Email: [email protected] EDUCATION 1989 M.S. Geology - Sedimentology and Hydrogeology Miami University, Oxford, OH
1985 A.B. Geology
Miami University, Oxford, OH
REGISTRATION No. 360 Certified Hydrogeologist (CHG.), CA No. 5737 Professional Geologist (PG), CA
PROFESSIONAL 1997 - Present Principal Hydrologist/Vice President HISTORY Kamman Hydrology & Engineering, Inc.

San Rafael, CA
1994 - 1997 Senior Hydrologist/Vice President
Balance Hydrologics, Inc., Berkeley, CA
1991 - 1994 Project Geologist/Hydrogeologist
Geomatrix Consultants, Inc., San Francisco, CA
1989 - 1991 Senior Staff Geologist/Hydrogeologist
Environ International Corporation, Princeton, NJ
1986 - 1989 Instructor and Research/Teaching Assistant
Miami University, Oxford, OH

SKILLS AND EXPERIENCE
As a Principal Hydrologist with 30 years of technical and consulting experience in the fields of geology, hydrology, and hydrogeology, Mr. Kamman routinely manages projects in the areas of surface- and ground-water hydrology, stream and wetland habitat restoration, water supply, water quality assessments, water resources management, and geomorphology. Areas of expertise include: stream and wetland habitat restoration; characterizing and modeling basin-scale hydrologic and geologic processes; assessing hydraulic and geomorphic responses to land-use changes in watersheds and causes of stream channel instability; evaluating surface- and ground-water resources and their interaction; and designing and implementing field investigations characterizing surface and subsurface conditions; and stream and wetland habitat restoration feasibility assessments and design. In addition, Mr. Kamman commonly works on projects that revolve around sensitive fishery, wetland, wildlife and/or riparian habitat enhancement. Mr. Kamman performs many of these projects in response to local, state (CEQA) and federal statutes (NEPA, ESA), and other regulatory frameworks. Thus, Mr. Kamman is accustomed to working within a multi-disciplined team and maintains close collaborative relationships with biologists, engineers, planners, architects, lawyers, and resource and regulatory agency staff. Mr. Kamman is a prime or contributing author to over 80 technical publications and reports in the discipline of hydrology – the majority pertaining to ecological restoration. Mr. Kamman routinely teaches courses on stream and wetland restoration through U.C. Berkeley Extension and San Francisco State University’s Romberg Tiburon Center.

PROFESSIONAL Groundwater Resources Association of California SOCIETIES & Society for Ecological Restoration International AFFILIATIONS California Native Plant Society
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2018 Report by KHE
Delineating Subterranean Streams and Potential Stream Depletion Areas, Lower Stanislaus and Tuolumne River Watershed
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DRAFT TECHNICAL MEMORANDUM Kamman Hydrology & Engineering, Inc. 7 Mt. Lassen Dr., Suite C122, San Rafael, CA 94903
Telephone: (415) 491-9600
Facsimile: (415) 680-1538
E-mail: [email protected]
Date: July 23, 2018
To: Tom Lippe, Law Offices of Thomas N. Lippe, APC
From: Greg Kamman
Subject: Delineating Subterranean Streams and Potential Stream Depletion Areas Lower Stanislaus and Tuolumne River Watersheds
This memorandum presents the results of Kamman Hydrology & Engineering, Inc.’s (KHE) study to delineate and map subterranean streams and PSDAs in the Lower Stanislaus and Tuolumne River Watersheds within Stanislaus County. This work was completed pursuant to the approach and methods described in the February and March 2008 Stetson Engineering Inc. reports (Stetson 2008a and 2008b). Copies of these reports are attached. The mapped area includes: a) the mainstem Stanislaus River watershed between Goodwin Dam and confluence with San Joaquin River; and b) the mainstem Tuolumne River watershed between La Grange Dam/Reservoir and the San Joaquin River (hereafter referred to as Study Area). Mapping was completed on USGS 7.5-minute topographic quadrangle sheets (quad sheets) containing the mainstem river channels. Figure 1 depicts the 15 quad sheets that contain the study/mapping area.

BACKGROUND AND OBJECTIVES
Groundwater pumping can deplete stream flows if there is a hydraulic connection between groundwater aquifer and stream bed. Groundwater diversions that reduce stream flows can have a negative effect on anadromous fish habitat. The following excerpt from Stetson 2008a (pages 1-3) summarizes groundwater extraction that is subject to California laws governing surface water rights.

Pursuant to Water Code 1200, the State Water Board has permitting authority over subterranean streams flowing in known and definite channels. Groundwater classified as percolating groundwater is not subject to the State Water Board’s permitting authority. Thus, when considering an appropriation of groundwater, the State Water Board may have to evaluate the legal classification of the groundwater and determine whether it is a subterranean stream subject to the State Water Board’s permitting authority. In doing so, the State Water Board applies a four-part test, which was uphold by the appellate court in North ATTACHMENT 2
Kamman Hydrology & Engineering, Inc.
2 FIGURE 1: Study and mapping area (outlined in black), including: river alignments and USGS 7.5-minute quadrangle sheet boundaries.

ATTACHMENT 2
Kamman Hydrology & Engineering, Inc.
3 Gualala Water Co. v. State Water Resources Control Bd. (North Gualala) (2006) 139 Cal.App.4th 1577 [43 Cal.Rptr.3d 821]. The State Water Board also has continuing authority to protect public trust uses and to prevent the waste, unreasonable use, unreasonable method of use, or unreasonable method of diversion of water, regardless of basis of right.

In determining the legal classification of groundwater, the following physical conditions must exist for the State Water Board to classify groundwater as a subterranean stream flowing through a known and definite channel:
(1) A subsurface channel must be present;
(2) The channel must have a relatively impermeable bed and banks; (3) The course of the channel must be known or capable of being determined by reasonable inference; and
(4) Groundwater must be flowing in the channel.

Following the methods and guidelines provided by Stetson (2008a and 2008b), the objectives of this study are to: a) delineates subterranean streams within the Study Area in accordance with the State Water Board’s four-part test; and b) delineates Potential Stream Depletion Areas (PSDA) where groundwater pumping could potentially cause stream depletion.

METHODOLOGY
To complete this mapping study, KHE obtained and reviewed numerous sources of information including: available topographic maps; geology reports and maps; soil survey maps and reports; and aerial imagery. All information was integrated into GIS work platform for synthesis and review. In many instances, older geologic maps were manually georeferenced1in order to import and overlay with other maps in GIS. Based on synthesis and review of this information, estimates of subterranean stream and PSDA boundaries were mapped on the most recent USGS

7.5-minute quadrangle maps identified in Figure 1.

Subterranean stream, channel alluvium and PSDA boundaries were mapped based on geology and soil map data. Sources of geology and soil information reviewed are presented in Tables 1 and 2. Considerable detailed mapping of alluvial deposits within the Study Area has been 1 Georeferencing means to associate something with locations in physical space. The term is used in the geographic information systems (GIS) field to describe the process of associating a physical map or raster image of a map with spatial locations.

ATTACHMENT 2
Kamman Hydrology & Engineering, Inc.
4 completed within the Study Area. In addition to the sources listed in Tables 1 and 2, studies by Marchand (1976), Marchand and Allwardt (1981), Page and Balding (1973) and Page (1986) were helpful in describing and distinguishing the relative age/position of geologic units as they relate to surface water interaction. Mapped units were identified and defined as follows.  Subterranean Stream: geologic contract between relatively impermeable bedrock and recent Holocene alluvium (or equivalent deposits) clearly associated with and in reasonable proximity of a stream. Subterranean streams represent areas where groundwater flow is through a known and definite channel and subject to State Water Board permitting authority.
 Potential Stream Depletion Area (PSDA): Alluvial deposits that serve as aquifers that can be hydraulically connected to adjacent stream and where groundwater pumping can deplete stream flow or reduce groundwater flow to the stream2. However, PSDAs lack a clear delineation of “bed and banks” (i.e., lack of impermeable deposits hosting stream) and therefore are not subject to State Water Board permitting authority. PSDAs may include one or more of the geologic units identified in Table 3.  Mapped Channel Alluvium: recently deposited (young) alluvial channel deposits located within the PSDA, including the geologic and soil units identified in Table 3. This unit is associated with alluvial deposits that will display greater or more immediate stream depletion by a pumping well screened within the unit.

Subterranean stream and PSDA boundaries based on mapped geology and soil units were further adjusted based upon topographic expression and aerial imagery (NAIP, 2014). For quadrangles where only soil and regional geologic maps were available (Oakdale, Escalon, Paulsell, Waterford and Riverbank), map unit boundaries relied more on topographic expression. No field inspection of mapped unit boundaries was conducted.
2 For the stream to be influenced by a pumping well, the well is typically screened within a zone of material that is hydraulically connected to the stream. A well does not have the potential to deplete a stream if the well is sealed throughout the alluvial deposits that are in hydraulic connection with the stream and if the well is pumping water from an aquifer that is hydraulically disconnected from the natural channel or subterranean stream.

ATTACHMENT 2
Kamman Hydrology & Engineering, Inc.
5 TABLE 1: Sources of Geology and Soil Information: Lower Stanislaus River USGS Quadrangle Source of Information
Knights Valley  Preliminary Geologic Map of Copperopolis Quadrangle (Bartow et al., 1981)
 Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey of Stanislaus County, California, Northern part (USDA NRCS, 2007)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Oakdale  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey of Stanislaus County, California, Northern part (USDA NRCS, 2007)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Escalon  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey of Stanislaus County, California, Northern part (USDA NRCS, 2007)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Avena  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Salida  Preliminary geologic map showing Quaternary deposits of the lower Tuolumne and Stanislaus alluvial fans and along the lower San Joaquin River (Marchand and Harden, 1978)
 Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Ripon  Preliminary geologic map showing Quaternary deposits of the lower Tuolumne and Stanislaus alluvial fans and along the lower San Joaquin River (Marchand and Harden, 1978)
 Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) ATTACHMENT 2
Kamman Hydrology & Engineering, Inc.
6 TABLE 2: Sources of Geology and Soil Information: Lower Tuolumne River USGS Quadrangle Source of Information
La Grange  Preliminary geologic maps showing Cenozoic deposits of the Cooperstown and La Grange quadrangles (Marchand et al., 1981)  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Cooperstown  Preliminary geologic maps showing Cenozoic deposits of the Cooperstown and La Grange quadrangles (Marchand et al., 1981)  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Paulsell  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Waterford  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Riverbank  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Denair  Preliminary geologic maps showing Quaternary deposits of the Ceres, Denair and Montpellier 7 ½ quadrangles (Marchand, 1980)  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Ceres  Preliminary geologic maps showing Quaternary deposits of the Ceres, Denair and Montpellier 7 ½ quadrangles (Marchand, 1980)  Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Brush Lake  Preliminary geologic map showing Quaternary deposits of the lower Tuolumne and Stanislaus alluvial fans and along the lower San Joaquin River (Marchand and Harden, 1978)
 Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) Kamman Hydrology & Engineering, Inc.
7 TABLE 2: Sources of Geology and Soil Information: Lower Tuolumne River (continued) USGS Quadrangle Source of Information
Westley  Preliminary geologic map showing Quaternary deposits of the lower Tuolumne and Stanislaus alluvial fans and along the lower San Joaquin River (Marchand and Harden, 1978)
 Geologic map of the San Francisco-San Jose quadrangle (Wagner et al., 1991)
 Soil Survey, Eastern Stanislaus Area, California (Arkley, 1964) TABLE 3: Geologic units associated with Potential Stream Depletion Areas (PSDA) Age Geologic Map Units PSDA
Map Unit
Holocene
Modern
Post Modesto
Formation pmf
hal – undifferentiated
alluvium;
af- artificial fill;
t – dredge tailings;
pm4
Mapped
Channel
Alluvium
Historic pm3
Potential
Stream
Depletion
Area
(PSDA)
Prehistoric pm2
Early
Holocene
pm1
Pleistocene
Modesto
Formation
m2 /m2f
(upper
unit)
m2-4
m2-3
m2-2
m2-1
m1 /m1f (lower unit)
Riverbank
Formation
r3 / r3f (upper unit)
r2 /r2f (middle unit)
Not
Within
PSDA
r1 /r1f (lower unit)
Turlock Lake
Formation
t2 (upper unit) t2u
t2l
t1 (lower unit)
Kamman Hydrology & Engineering, Inc.
8 RESULTS AND DISCUSSION
The quadrangles with mapped subterranean streams and PSDAs are included at the end of this memorandum. It is important to note that the vast majority of PSDAs are bounded by older alluvial and floodplain deposits which could potentially be in hydraulic connection with adjacent PSDAs. Thus, further analysis of potential streamflow depletion is necessary for wells completed in Holocene or Pleistocene aged material outside of a mapped PSDA and lying within ½-mile of the mainstem Stanislaus and Tuolumne Rivers.

Because the delineation of areas on the accompanying maps were, a) based on information readily available at the time they were developed, and b) only assess potential stream flow depletion from the mainstem Stanislaus and Tuolumne Rivers (i.e., not their tributaries), the maps do not represent all of the subterranean streams or PSDAs that exist in the area. Site specific investigations will be needed to verify the existence (or absence) of subterranean streams and PSDAs.

REFERENCES CITED
Arkley, R.J., 1964, Soil survey of the eastern Stanislaus area, California. U.S. Department of Agriculture, Soil Survey Service, Series 1957, No. 20, September, 160p.

Bartow, J.A., Marchand, D.E., and Shiplev, S., 1981, Preliminary Geologic Map of Copperopolis Quadrangle, California. U.S. Geological Survey Open-File Report 81-1048, 2 plates.

Marchand, D., 1976, Preliminary Quaternary Geologic Map of the Northern Merced Area, California. U.S. Geological Survey Open-File Report 76-836, 8 sheets.

Marchand, D. and Harden, J.W., 1978, Preliminary Geologic Maps showing Quaternary deposits of the Lower Tuolumne and Stanislaus alluvial fans and along the Lower San Joaquin River, Stanislaus County, California (Westley, Brush Lake, Ripon and Salida 7 ½ Quadrangles). U.S.

Geological Survey Open-File Report 78-656, 4 plates.

Marchand, D., 1980, Preliminary Geologic Maps showing Quaternary deposits of the Ceres, Denair and Montpelier 7 ½ Quadrangles, Stanislaus and Merced Counties, California. U.S. Geological Survey Open-File Report 80-607, 3 plates.

Marchand, D., Bartow, J.A., and Shipley, S., 1981, Preliminary Geologic Maps showing Cenozoic deposits of the Cooperstown and La Grange Quadrangles, Stanislaus and Tuolumne Counties, California. U.S. Geological Survey Open-File Report 81-1049, 2 plates Marchand, D.E. and Allwardt, A., 1981, Late Cenozoic stratigraphic units, northern San Joaquin Valley, California. U.S. Geologial Survey Bulletin 1470, 77p.

Kamman Hydrology & Engineering, Inc.
9 NAIP (National Agricultural Imagery Program), 2014, One-meter ground sample distance natural color aerial imagery: United States Department of Agriculture, Farm Service Agency, accessed from: https://earthexplorer.usgs.gov/
Page, R.W., 1986, Geology of the fresh ground-water basin of the Central Valley, California, with texture maps and sections: U.S. Geological Survey Professional Paper 1401-C, 54 p., 5 plates, http://pubs.er.usgs.gov/publication/pp1401C
Page, R.W. and Balding, G.O., 1973, Geology and quality of water in the Modesto–Merced area San Joaquin Valley, California. U.S. Geological Survey Water Resources Investigations Report 6-73, 85 p.

Stetson Engineers Inc., 2008a, Approach to delineate Subterranean Streams and determine Potential Streamflow Depletion Areas: Policy for Maintaining Instream Flows in Northern California Coastal Stream. Technical Memorandum, February 28, 22p.

Stetson Engineers, Inc., 2008b, Methodology and sources of information, delineation of Subterranean Streams and Potential Streamflow Depletion Areas: Policy for Maintaining Instream Flows in Northern California Coastal Stream. Draft Technical Memorandum, March 16, 47p.

U.S. Department of Agriculture, Natural Resources Conservation Service (USDA NRCS), 2007, Soil survey of Stanislaus County, California, northern part. Prepared in cooperation with the Regents of the University of California (Agricultural Experiment Station), 352p.

Wagner, D.L., Bortugno, E.J., and McJunkin, R.D., 1991, Geologic map of the San Francisco-San Jose quadrangle, California, 1:250:000. California Division of Mines and Geology, Regional Geologic Map Series, Map No. 5A (Geology) Sheet 1 of 5.

August 25, 2019
Sent via email to [email protected]
Re: Comments on Draft Groundwater Sustainability Plan for Eastern San Joaquin Subbasin To whom it may concern,
On behalf of the above-listed organizations, we would like to offer the attached comments on the draft Groundwater Sustainability Plan for the Eastern San Joaquin Subbasin. Our organizations are deeply engaged in and committed to the successful implementation of the Sustainable Groundwater Management Act (SGMA) because we understand that groundwater is a critical piece of a resilient California water portfolio, particularly in light of our changing climate. Because California’s water and economy are interconnected, the sustainable management of each basin is of interest to both local communities and the state as a whole.

Our organizations have significant expertise in the environmental needs of groundwater and the needs of disadvantaged communities.
● The Nature Conservancy, in collaboration with state agencies, has developed several tools for 1 identifying groundwater dependent ecosystems in every SGMA groundwater basin and has made that tool available to each Groundwater Sustainability Agency. ● Audubon California is an expert in understanding wetlands and their role in groundwater recharge and applying conservation science to develop multiple-benefit solutions for sustainable groundwater management.
● Clean Water Action and Clean Water Fund are sister organizations that have deep expertise in the provision of safe drinking water, particularly in California’s small disadvantaged communities, and co-authored a report on public and stakeholder engagement in SGMA .2 1 https://groundwaterresourcehub.org/
2 https://www.cleanwater.org/publications/collaborating-success-stakeholder-engagement-sustainable-groundwate r-management-act
1 'C EAN WATER ACTION I CLEAN WATER FUND
American Rivers [ Unionof d . . R1vERs coNNEcT us® Concerne Sc1ent1sts Science for a healthy planet and safer world
~ udubon I CALIFORNIA
The Nature
Conservancy
● The Union of Concerned Scientists has been working to ensure that future water supply meets demand and withstands climate change impacts by supporting stakeholder education and integration, and the creation and implementation of science-based Groundwater Sustainability Plans.
● American Rivers is committed to restoring damaged rivers and conserving clean water for people and nature.

Because of the number of draft plans being released and our interest in reviewing every plan, we have identified key plan elements that are necessary to ensure that each plan adequately addresses essential requirements of SGMA. A summary review of your plan using our evaluation framework is attached to this letter as Appendix A. Appendix B provides a more detailed evaluation of the water quality and drinking water elements of the Plan. Our hope is that you can use our feedback to improve your plan before it is submitted in January 2020.

This review does not look at data quality but instead looks at how data was presented and used to identify and address the needs of disadvantaged communities (DACs), drinking water and the environment. In addition to informing individual groundwater sustainability agencies of our analysis, we plan to aggregate the results of our reviews to identify trends in GSP development, compare plans and determine which basins may require greater attention from our organizations.

Key Indicators
Appendix A provides a list of the questions we posed, how the draft plan responds to those questions and an evaluation by element of major issues with the plan. Below is a summary by element of the questions used to evaluate the plan.

1. Identification of Beneficial Users . This element is meant to ascertain whether and how DACs and groundwater-dependent ecosystems (GDEs) were identified, what standards and guidance were used to determine groundwater quality conditions and establish minimum thresholds for groundwater quality, and how environmental beneficial users and stakeholders were engaged through the development of the draft plan.

2. Communications plan . This element looks at the sufficiency of the communications plan in identifying ongoing stakeholder engagement during plan implementation, explicit information about how DACs were engaged in the planning process and how stakeholder input was incorporated into the GSP process and decision-making.

3. Maps related to Key Beneficial Uses . This element looks for maps related to drinking water users, including the density, location and depths of public supply and domestic wells; maps of GDE and interconnected surface waters with gaining and losing reaches; and monitoring networks.

4. Water Budgets . This element looks at how climate change is explicitly incorporated into current and future water budgets; how demands from urban and domestic water users were incorporated; and whether the historic, current and future water demands of native vegetation and wetlands are included in the budget.

5. Management areas and Monitoring Network. This element looks at where, why and how management areas are established, as well what data gaps have been identified and how the plan addresses those gaps.

6. Measurable Objectives and Undesirable Results. This element evaluates whether the plan explicitly considers the impacts on DACs, GDEs and environmental beneficial users in the 2 development of Undesirable Results and Measurable Objectives. In addition, it examines whether stakeholder input was solicited from these beneficial users during the development of those metrics.

7. Management Actions and Costs. This element looks at how identified management actions impact DACs, GDEs and interconnected surface water bodies; whether mitigation for impacts to DACs is discussed or funded; and what efforts will be made to fill identified data gaps in the first five years of the plan. Additionally, this element asks whether any changes to local ordinances or land use plans are included as management actions.

Conclusion
We know that SGMA plan development and implementation is a major undertaking, and we want every basin to be successful. We would be happy to meet with you to discuss our evaluation as you finalize your Plan for submittal to DWR. Feel free to contact Suzannah Sosman at [email protected] for more information or to schedule a conversation.

Sincerely,
Jennifer Clary
Water Program Manager
Clean Water Action/Clean Water Fund
Samantha Arthur
Working Lands Program Director
Audubon California
Sandi Matsumoto
Associate Director, California Water Program
The Nature Conservancy
Lisa Hunt, Ph.D.

Director of California River Restoration Science
American Rivers
J. Pablo Ortiz-Partida, Ph.D.

Western States Climate and Water Scientist
Union of Concerned Scientists
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