The Westside Basin Groundwater Management Plan
The California Water Quality Control Board, San Francisco Bay Region has weighed in with their comments on the Westside Basin Proposed Groundwater Management Plan. Their postion: "The integrity of Lake Merced must be preserved." Read the letter (August 26, 1999) from Ron Gervason, Chief of the Policy and Planning Divison, to Patrick Sweetland Chair of the Westside Planning Partners.
We would like to post a copy of this plan on the site; however, we have been unable to obtain a copy in electronic format. Call the Daly City Department of Water and Wastewater Resources at (650) 991-8200 to obtain a copy.
The "Tier I tasks" described in theWestside Basin Proposed Groundwater Management Plan largely constitute a series of data collection and analysis steps. Even this humble beginning is being delayed as resources are sought to pay for data entry, summarization and reporting. And so Friends of Lake Merced has offered to undertake this assignment, contingent upon the data collection plan include consideration of surface water as well as groundwater impacts. To date our offer has simply been ignored. Perhaps you'd like to review our correspondence.
We've responded to this Plan with a series of letters requesting that the plan, and the planning process itself, be reviewed. Little if any attention has been paid environmental issues. No consideration is given the effect of pumping practices on the level of Lake Merced. Promised coordination by the PUC of their plans to raise Lake Merced to historical levels has not been accomplished. We've written to:
Tom Ammiano, President of the San Francisco Board of Supervisors. Copies of this letter were sent to Supervisors Bierman, Teng and Newsom, as well as to Anson Moran, General Manager of the PUC.We've posted a summary of our month-long conversation, via e-mail, with John Fio. John is a Hydrologist with the firm HydroFocus, Inc., in Dixon, California. He's helped us understand the issues related to pumping water from the Westside Basin aquifer and its impact on Lake Merced, as well as raising questions that remain to be answered.Kevin Shelley, California Assemblyman from the district that contains Lake Merced. Copies of this letter were also sent to State Senator Jackie Speier, Assemblywoman Carole Migden, and Assemblyman Mike Machado, Chair of the Assembly's Water, Wildlife & Parks Committee.
Loretta Barsamian, Executive Officer, Regional Water Quality Control Board. Copies of this letter were also sent to Carl Hauge, Chief Hydrologist, California Department of Water Resources and to Brian Hunter, Regional Manager of the California Department of Fish & Game.
Our original posting about this plan, and the planning process, follows:
"The Westside Basin extends from Golden Gate Park south to the San Francisco International Airport, east under the Bay, and west under the Pacific Ocean at least as far as the San Andreas fault. The cities of San Francisco, Daly City, South San Francisco, Colma, San Bruno, Millbrae, and parts of Burlingame, Westborough and Hillsborough all lie on top of the Westside Basin. Beneath the ground surface of the Westside Basin are layers of porous sand and gravel capable of storing large amounts of water. In 1995, the Westside Basin provided about 30 percent of the water supply for Daly City, South San Francisco and San Bruno. Water is also pumped from the basin to irrigate the large turf areas associated with local parks, golf courses and cemeteries." (Brochure announcing the first public workshop, distributed by Public Affairs Management.)
The Westside Basin Groundwater Management Plan is being developed by a number of commercial water interests who depend on the underlying aquifer to obtain the product that they sell. This plan is being prepared following procedures defined by state legislation, AB3030. This law encourages local agencies to work together to manage shared groundwater resources. We have not yet been able to obtain an electronic copy of that bill, but are attempting to do so.
Cities and communities represented on this group include San Francisco, Daly City, San Bruno, Colma, South San Francisco and Millbrae. In addition, a representative of the California Water Service Company, a commercial interest serving the southern section of the Westside Basin, is included in the planning group. We requested that a member representing environmental interests be included in the planning group. That request was denied.
While we have not seen a published list of members, we beleive that the following list is complete:
Patrick Sweetland, Chair
Manager of Water & Wastewater Resources
City of Daly City
153 Lake Merced Blvd.
Daly City, CA 94015
650-991-8201Michael Carlin
Public Utilities Commission
1212 Market Street, 2nd Floor
San Francisco, CA 94102
415-554-8987
Friends of Lake Merced has carried on an extensive correspondence with members of this planning team. We have consistently tried to raise the awareness, and the consideration, of issues as they relate to the health of Lake Merced. We have, as a review of this correspondence will demonstrate, been totally unsuccessful in this effort. Following are the more important of these letters:Thomas A. Salzano
California Water Service Company
1720 North First Street
San Jose, CA 95108
408-451-8340Scott Chadd
Director, Department of Public Works
City of San Bruno
567 El Camino Real
San Bruno, CA 94066
650-873-6749Nov. 24, 1997 -- to Patrick Sweetland: In this letter we encourage an enlargement of the effort to solicit community involvement in the planning process, and request that a representative of the environment be added to the planning team.Dec. 10, 1997 -- from Patrick Sweetland: Patrick explains that a representative of the environment is not needed, as a two hour public workshop, at which both Lake Merced and saltwater intrusion into the aquifer are to be reviewed, provides adequate opportunity for community input to these very complex issues.
May 1, 1998 -- to Patrick Sweetland: In this letter we argue that there is substantial prior record indicating a strong relationship between pumping from the Westside Basin aquifer and the condition of Lake Merced.June 12, 1998 -- from Patrick Sweetland: Patrick discovers that evaporation is the largest source of water loss from Lake Merced (we're still trying to find out how this came up). Patrick also suggests that because the relationship between the Westside Basin aquifer and Lake Merced is "uncertain" it is relatively unimportant to include that factor in their considerations. In this letter Patrick also observes that "the objective of monitoring wells, lake level gauges and so forth, is to provide the information necessary for answering questions quantifying the impact of pumping on Lake Merced."
June 22, 1998 -- to Patrick Sweetland: Accepting the challenge, we show that there is a very strong correlation between water levels in certain monitoring wells and the level of Lake Merced. We observe that "There is no lack of evidence that the condition of Lake Merced is tied directly to the condition of the Westside Basin aquifer," and provide the data needed to support that observation.Sept. 18, 1998 -- from Patrick Sweetland: Patrick acknowledges the correlation between monitoring wells and the level of Lake Merced. He contends, however, that we have failed to distinguish between correlation and causation (we haven't). Also for the first time in this correspondence, Patrick has discovered a layer of clay that separates the "shallow groundwater table" from the "deep groundwater table." Pumping from the deep groundwater table, Patrick contends, has a "relatively small effect on Lake Merced."
Nov. 30, 1998 -- to Patrick Sweetland: We contest the confusion between causation and correlation, and point to engineering studies that suggest a strong relationship between pumping and Lake levels. We again ask that engineering effort be directed toward a better understanding of this relationship.
Dec. 15, 1998 -- to Michael Carlin: We point out that recent publications from the planning group misstate the findings in a study conducted for the City by Geo/Resource Inc. We ask for help in correcting the record, and for PUC assistance in assuring that a more thorough review is conducted.
Feb. 9, 1999 -- to Patrick Sweetland: After an extensive correspondence, via e-mail, with John Fio, hydrologist with the firm HydroFocus, Inc., and a consultant to the Westside Basin Planning Partners, we have been able to document the need for much more focused attention to the impact of pumping activities on Lake Merced.In addition there are a number of documents, meeting minutes, presentations, etc. that may be of interest to those wanting to support Lake Merced. These include:Meeting summaries for the public workshops:
Public Workshop #1, Stakeholder Public Workshop, November 20, 1997Public Workshop #2, Groundwater Quality and Monitoring, February 11, 1998
Public Workshop #3, Lake Merced Water Levels & Westside Basin Pumping, Saltwater Intrusion, June 30, 1998
Public Workshop #4, Wellhead Protection, October 13, 1998
Presentation slides and notes:We have been offered web-readable copies of these documents, but to date they have not been delivered. When they are we will post them to this web site. In the meantime you may be able to obtain copies by contacting one of the Planning Team members listed above, or John Mejia, Project Manager, Public Affairs Management, 101 The Embarcadero, Suite 210, San Francisco, California 94105, (415) 989-1446.Modeling of Westside Basin Aquifer, September 9, 1997Key Issues and Concerns, Public Workshop presentation, November 20, 1997
Workshop: Lake Merced Issues and Saltwater Intrusion, June 30, 1998