WATER SUPPLY PLANNING COMMITTEE

ITEM:		ACTION ITEM
2.	DEVELOP RECOMMENDATION TO THE BOARD OF DIRECTORS ON FIRST READING OF ORDINANCE No. 175 – MODIFICATION OF DISTRICT RULES RE USE OF WATER FROM THE CARMEL VALLEY ALLUVIAL AQUIFER FOR WATER SUPPLY
Meeting Date:			September 20, 2016
From:			Dave Stoldt,
			General Manager
Prepared By:			Larry Hampson

SUMMARY: The committee will review draft Ordinance No. 175 (Exhibit 2-A), which would implement the amended District policy approved by the Board at its August 15, 2016 meeting (Exhibit 2-B) for setting production limits for certain new developments that depend on the Carmel Valley Alluvial Aquifer (CVAA) for a water supply. The District has a joint interest with Monterey County in reversing the trend of seasonal dewatering of the CVAA and in meeting the goal of Monterey County General Plan Policy PS-3.2 that requires proof of a long-term sustainable water supply for new development requiring a discretionary permit. Exhibit 2-C provides a list of MPWMD Rules concerning issuance of Water Distribution System (WDS) Permits that would be amended by Ordinance No. 175.

It is also noted that the 2006 District policy for setting a historical baseline for production limits from the CVAA for WDS Permits should be modified. The current definition of “actual historical use” is based solely on production records. In addition to an evaluation of a 10-year history of production (or other appropriate period), potential changes in consumptive use should also be considered. For proposals that fall outside of the August 15, 2016 policy, production limits should be set such that there is no net increase in either production or consumptive use in the CVAA.

STAFF RECOMMENDATION: The committee should recommend that the Board approve Ordinance No. 175 at first reading at the October 17, 2016 Board meeting and direct staff to revise the Implementation Guidelines and application forms for Water Distribution System Permits and Exemptions.

DISCUSSION: At its May 24, 2016 meeting, the committee reviewed both the District’s 2006 policy for setting production limits for WDS Permits that rely on the CVAA and the 2010 Monterey County General Plan Update Policy PS-3.2 for discretionary permits for new development. Subsequently, at its July 12, 2016 meeting the committee recommended the policy that the Board adopted at its meeting on August 15, 2016, as set forth in Exhibit 2-B. Also at that meeting, staff was directed to bring back to the Board an ordinance reflecting changes in the District Rules and Regulations as a result of the adopted policy.

With the enactment of State Water Resources Control Board Cease-and-Desist Order 2009-0060, Cal-Am production was significantly reduced, and a significant reversal of the trend in seasonal dewatering of the Carmel River began (see the chart contained in Exhibit 2-B). The proposed revisions to the District Rules should result in a continued reversal of the trend in seasonal dewatering. A key goal is to demonstrate a long-term sustainable water supply using the Monterey County General Plan Policy PS-3.2 factors such as:

· Cumulative impacts of existing and projected future demand for water from the source, and the ability to reverse trends contributing to an overdraft condition or otherwise affecting supply; and

· Effects of additional extraction or diversion of water on the environment including on instream flows necessary to support riparian vegetation, wetlands, fish or other aquatic life, and the migration potential for steelhead, for the purpose of minimizing impacts on the environment and to those resources and species.

The Ordinance text refers to the Implementation Guidelines for guidance on how the consumptive use and other calculations will be performed. Rule 11, Definitions, is amended to define “Consumptive Use” and other terms.

2006 Policy on Protocol for Applications Involving Wells in the CVAA

At its October 16, 2006 meeting, the Board approved a policy to address cumulative impacts from the combined effects of Cal-Am and non-Cal-Am extraction from the CVAA. Essentially, the Board adopted a policy of no net increase in production, as measured from data at the well head. However, in some cases, proposals to convert to other uses or add other uses should also consider what changes in consumptive use may occur. This is due to the effect of “return flow” to the CVAA that benefits river flow. This may result from both indoor (e.g., septic return flow) and outdoor use (e.g., from landscape irrigation). Therefore, for proposals that fall outside of the District’s August 15, 2016 policy, in addition to submitting historical well production data, applicants should be required to demonstrate that post-conversion consumptive use is equal to or less than pre-conversion levels. Such analysis should be carried out by qualified hydrologists or experts with similar qualifications.

EXHIBITS

2-A Draft Ordinance No. 175

2-B Staff report from the August 15, 2016 MPWMD Board meeting

2-C List of Rules Amended by Draft Ordinance No. 175

U:\staff\Board_Committees\WSP\2016\20160920\02\Item-2.docx