TECHNICAL ADVISORY COMMITTEE
MEETING |
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ITEM: |
DISCUSSION ITEMS |
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1. |
REVIEW RESULTS OF PILOT
STUDY ON WELLS IN FRACTURED ROCK FORMATIONS |
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Meeting
Date: |
August 3,
2010 |
Budgeted: |
N/A |
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From: |
Darby Fuerst, |
Program/ |
N/A |
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General Manager |
Line Item
No.: |
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Prepared
By: |
Henrietta Stern |
Cost
Estimate: |
N/A |
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General
Counsel Review: Counsel has not reviewed
this staff note. |
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Committee
Recommendation: N/A—This is a presentation
report only. |
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CEQA Compliance: N/A |
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SUMMARY: District staff will provide an update on
tasks associated with review of wells in fractured rock formations, as well as
coordination with the Monterey County Health Department (MCHD). The focus of this item will be a slide
presentation to the Technical Advisory Committee (TAC) by District staff on the
results of its pilot study of fractured rock wells.
Pilot
Study Of Wells in Fractured Rock:
District staff will make a 15-20 minute technical presentation to TAC on
its pilot study of wells in the Carmel Woods, Carmel Views and Aguajito areas. This is the general area north of
http://www.mpwmd.dst.ca.us/asd/board/committees/waterdemandcommittee/2010/20100721/06/item6.htm.
MPWMD Ordinance Clarifying Current Practices: District staff has included proposed language for tighter and clearer regulations for fractured rock wells in proposed Ordinance No. 145, which was reviewed by the WDC on July 21, 2010, and will be considered by the MPWMD Board for first reading on August 16, 2010. The fractured rock text includes refinements to Rule 11 (Definitions), Rule 20-C (Exemptions) and Rule 22-D (Mandatory Conditions of Approval) associated with WDS permits. The language shown is subject to change. Information provided to the WDC on July 21, 2010 is at:
http://www.mpwmd.dst.ca.us/asd/board/committees/waterdemandcommittee/2010/20100721/02/item2.htm.
Coordination with MCHD: District staff met with MCHD and Monterey
County Planning Department staff on May 19, 2010 to present the findings of the
fractured rock well pilot study described above. We also discussed the then-pending County
ordinance regarding fractured rock wells. On May 25, 2010, the
Monthly
Update on WDS Applications: Since late January 2010, District staff has
provided an update on well applications in fractured rock as part of the
General Manager’s report at Board meetings.
Exhibit 1-B provides a
summary of the Applications and Pre-Applications in progress for wells in
fractured rock as of July 26, 2010. An
overview is provided in the “Discussion” section below.
BACKGROUND: At its January 28, 2010 meeting, the MPWMD
Board of Directors did not approve Urgency Ordinance No. 143 that would have temporarily
suspended receipt and processing of Pre-Applications and Applications for a MPWMD
Water Distribution System (WDS) permit that is supplied by a well drilled in
“fractured rock.” The Board referred
additional research and discussion back to the Water Demand, Rules and
Regulations Review, and Technical Advisory Committees. Ordinance No. 143 information is available
at:
http://www.mpwmd.dst.ca.us/asd/board/boardpacket/2010/20100128/20/item20.htm
In February 2010, District staff determined it would research the items listed below, and report back to the WDC and other committees on its progress. The tasks include:
DISCUSSION: The
following paragraphs describe MPWMD staff progress on the 11 tasks enumerated
above. Important Note: TAC members
should provide a recent copy of any well-related ordinance to District staff at
the August 3, 2010 meeting (see Task 1):
TASK |
ACTION TO
DATE (6/10/2010) |
Task 1: Obtain copies of
well ordinances from each jurisdiction within MPWMD. |
In progress. Certain ordinances are already on file; need
to update file and assess if changes have occurred in recent years. |
Task 2: Develop mailing
list of fractured rock well owners and interested parties. |
Completed by March 31,
2010. |
Task 3: Data research of
MPWMD well database and related documentation to help assess potential
resource constraint areas. |
Pilot project that
encompasses wells in the Aguajito, Carmel Woods and Carmel Views areas
completed in June 2010; presentations made to WDC on June 18, 2010 and to TAC
on August 3, 2010. This includes
geographic information, geology, physical characteristics of the wells,
individual and cumulative production capacities, etc. Staff generated a
series of charts and 3-D graphics for presentations of the initial findings to
be followed by a detailed technical memorandum in summer/fall 2010. District staff and the WDC have recommended
funding an expanded study of all fractured rock wells within the District in FY
2010-2011. This will be considered by
the MPWMD Board at its August 16, 2010 meeting. |
Task 4: Research reasons
why people requested replacement wells (exemptions). |
This task has been
delayed due to other well-related priorities. On June 9, 2010, staff received a well
replacement application due to inadequate supply in the pilot study
area. Staff worked with the property
owner to obtain more field data about the well and local hydrogeology. |
Task 5: Assess whether
replaced wells have potential as monitoring sites. |
This task will be part of
the proposed expanded study, where six automatic data loggers are proposed
for six (yet-to-be-determined) wells. Data
logging has occurred at the one well noted in Task 4. |
Task 6: What type of
monitoring program (and costs) in the Carmel Valley Upland areas is needed to
assess its hydrologic health? |
A decision on this task
is associated with the expanded study before the Board on August 16, 2010 (see
Task 3). |
Task 7: Prepare legal
overview (summary) on water rights associated with these types of wells, and
under what conditions could MPWMD constrain use. |
Due to higher priorities
for District Counsel, this task has not been requested to date. In general, property owners with overlying
water rights to percolating groundwater have correlative (shared) water
rights, and may use water for a “reasonable and beneficial use.” |
Task 8: Consider MPWMD
ordinance to require access for well monitoring, prohibit Cal-Am bailout, and
allow exemption for an inactive well for only 3 years, with proof of adequate
72-hour pumping test. |
This text is part of
proposed Ordinance No. 145 to be considered by the Board on August 16, 2010
for first reading. |
Task 9: Address concerns
about cumulative effects on |
These concerns would be
addressed after the District-wide assessment of wells is completed, if
approved by the Board. See Task 3. |
Task 10: Assess whether
Carmel Woods property owners would fund a monitor well in
their area to track trends. |
This task depends on the results
of pilot study, and whether a suitable existing monitor well is already available. A well in the Aguajito area has been
located and is being monitored. |
Task 11: Update the MPWMD
website with a memorandum on wells in the Coastal Zone. |
This task has not been
completed due to other well-related updates for the website completed in July
2010. Goal for a new WDS Memorandum on
the website is late August 2010. |
In the nine years
since Ordinance No. 96 was adopted in March 2001, 80 WDS permits have been
issued, primarily for residential use.
Roughly 85% of these permitted WDS (68 approvals) are served by wells
extracting water from “fractured rock” formations. An estimated 47 Applications or
Pre-Applications in progress could potentially be approved for wells in
fractured rock (39 Pre-Applications/Exemption Requests + 8 WDS Applications).
The Water Year 2009
production report lists nearly 400 existing non-CAW wells in fractured rock
formations, including 287 wells in the Carmel Valley Upland area, 95 wells in
the “Miscellaneous” area (primarily Jack’s Peak, Carmel Highlands and Highway
68 near the Monterey Airport) and 15 wells in the Cachagua area. The 13 non-Cal-Am wells in the
Exhibit 1-B
provides an overview of Applications and Pre-Applications in six categories:
Ø Recently submitted Applications that are
being reviewed for completeness, especially the submitted hydrogeologic report
(0 projects);
Ø Applications deemed complete; permit
documents in preparation for approval by District Engineer (2 projects);
Ø Applications that are incomplete or are
suspended for some other reason, such as County well status for Coastal Zone parcels
(6 projects);
Ø Pre-Applications/Exemption Requests received
but not completed (14 projects);
Ø Pre-Applications that need review to provide
guidance before applicant submits a full Application package (18 projects)
Ø Pre-Applications that have been reviewed, but
formal Applications have not yet been submitted (22 projects).
EXHIBITS
1-A Monterey County Ordinance No. 5160 affecting
certain fractured rock wells
1-B Pending
WDS Applications for Fractured Rock Wells
as of July 26, 2010
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