EXHIBIT 2-A
2004-2005 ANNUAL REPORT
(July 1, 2004 -
June 30, 2005)
MPWMD MITIGATION
PROGRAM
WATER ALLOCATION
PROGRAM ENVIRONMENTAL IMPACT REPORT
MONTEREY PENINSULA
WATER MANAGEMENT DISTRICT
Prepared March 2006
I. INTRODUCTION AND EXECUTIVE SUMMARY
BACKGROUND:
In April 1990, the Water Allocation Program Final Environmental Impact Report (EIR) was prepared for the Monterey Peninsula Water Management District (MPWMD) by Mintier and Associates. The Final EIR analyzed the effects of five levels of annual California American Water (Cal-Am) production, ranging from 16,744 acre-feet per year (AFY) to 20,500 AFY. On November 5, 1990, the MPWMD Board certified the Final EIR, adopted findings, and passed a resolution that set Option V as the new water allocation limit. Option V resulted in an annual limit of 16,744 AFY for Cal-Am production, and 3,137 AFY for non-Cal-Am production, resulting in a total allocation of 19,881 AFY for the water resource system.
Even though Option V was the least damaging alternative of the five options analyzed in the Water Allocation EIR, production at this level still resulted in significant, adverse environmental impacts that must be mitigated. Thus, the findings adopted by the Board included a "Five-Year Mitigation Program for Option V" and several general mitigation measures.
In June 1993, Ordinance No. 70
was passed, which amended the annual Cal-Am production limit from 16,744 AF to
17,619 AF, and the non Cal-Am limit from 3,137 AF to 3,054 AF; the total
production limit was increased from 19,881 AF to 20,673 AF per year due to new
supply from the Paralta Well in
The Five-Year Mitigation Program formally began in July 1991 with the new fiscal year (FY) and was slated to run until June 30, 1996. Following public hearings in May 1996 and District Board review of draft reports through September 1996, the Five-Year Evaluation Report for the 1991-1996 comprehensive program as well as an Implementation Plan for FY 1997 through FY 2001 were finalized in October 1996. In its July 1995 Order WR 95-10, the State Water Resources Control Board (SWRCB) directed Cal-Am to carry out any aspect of the Five-Year Mitigation Program that the District does not continue after June 1996. To date, as part of the annual budget approval process, the District Board has voted to continue the program. The mitigation program presently accounts for a significant portion of the District budget in terms of revenue (derived primarily from the MPWMD fee on the Cal-Am bill) and expenditures.
The
This 2004-2005 Annual Report will first address general mitigation measures relating to water supply and demand (Sections II through VIII), followed by mitigations relating to specific environmental resources (Sections IX through XII). Section XIII provides a summary of costs for the biological mitigation programs as well as related hydrologic monitoring, water augmentation and administrative costs. Section XIV presents selected references by topic.
Table I-1 summarizes the mitigation measures described in this report. In subsequent chapters, for each topic, the mitigation measure adopted as part of the Final EIR is briefly described, followed by a summary of activities relating to the topic in FY 04-05 (July 1, 2004 through June 30, 2005 unless as noted otherwise). Monitoring results, where applicable, are also presented. Tables and figures that support the text are found at the end of each section in the order they are mentioned in the text. Finally, a summary of observed trends, conclusions and/or recommendations is provided, where pertinent.
ACCOMPLISHMENTS:
Many activities are carried out
as part of the MPWMD Mitigation Program to address the environmental effects
that community water use has upon the
OBSERVED TRENDS, CONCLUSIONS AND/OR RECOMMENDATIONS:
The following paragraphs describe observed trends (primarily qualitative), conclusions and/or recommendations for the mitigation program. General conclusions are followed by a summary of selected categories.
General Overview
In general, the
The comprehensive MPWMD Mitigation Program is an important factor responsible for this improvement. Direct actions such as fish rescues and rearing, and riparian habitat restoration literally enable species to survive and reproduce. Indirect action such as conservation programs, water augmentation, ordinances/regulations and cooperative development of Cal-Am operation strategies result in less environmental impact from human water needs than would occur otherwise. The District’s comprehensive monitoring program provides a solid scientific data baseline, and enables better understanding of the relationships between weather, hydrology, human activities and the environment. Better understanding of the water resources system enables informed decision-making that achieves the District’s mission of benefiting the community and the environment.
It is acknowledged that there are
other important factors responsible for this improved situation. For example, since 1991, the
Despite these improvements,
challenges still remain due to human influence on the river. The steelhead and red-legged frog remain
listed as Threatened species under the ESA.
Several miles of the river still dry up each year, harming habitat for
fish and frogs. The presence of the two
existing dams, flood plain development and water diversions to meet community
needs continue to alter the natural dynamics of the river. Stream bank restoration projects may be
significantly damaged in large winter storm events, and some people continue to
illegally dump refuse into the river or alter their property without the proper
permits. Thus, the Mitigation Program
(or a comprehensive effort similar to it) will be needed as long as significant
quantities of water are diverted from the
Water Resources
Streamflow and precipitation data
continue to provide a scientific basis for management of the water resources
within the District. These data continue
to be useful in
Rainfall and Streamflow. Rainfall at San Clemente Dam in water year (WY) 2005 was 29.95 inches, or 140% of the average value of 21.37 inches. Streamflow measured at San Clemente Dam totaled 111,356 AF, which is classified as a “wet” water year.
Surface and Groundwater
Storage. There is very limited
storage of surface water by dams on the
Groundwater levels, and
consequently groundwater storage conditions, in the
In contrast, storage conditions
in the coastal portion of the
One of the means to address this
observed trend is a program that the District has been actively pursuing since
1996 -- the Seaside Basin aquifer storage and recovery (ASR) program, where
excess flow from the Carmel River, as specified by state and federal resource
agencies, is injected into the Seaside Basin for use during dry periods. Continued testing of the District’s
full-scale test injection well was carried out during FY 04-05 to further
confirm the feasibility of this important means to reduce summer pumping from the
Carmel River and help replenish the Seaside Basin. Fortunately, groundwater quality conditions
in both the
In FY 04-05, the District continued
efforts to prepare a Seaside Basin Groundwater Management Plan in compliance
with protocols set by the State of
Steelhead Resource
Monitoring conducted by the District shows that the
Ø Improvements in streamflow patterns, due to favorable natural fluctuations, exemplified by relatively high base flow conditions since 1995;
Ø The District’s and the SWRCB rules to actively manage the rate and distribution of groundwater extractions and direct surface diversions within the basin;
Ø
Changes to Cal-Am’s operations at
Ø Improved conditions for fish passage at Los Padres and San Clemente Dams due to physical improvements;
Ø
Recovery of riparian habitats, tree cover along
the stream, and increases in woody debris, especially in the reach upstream of
Ø Extensive rescues (and rearing) by MPWMD of juvenile steelhead over the last ten years, now totaling 213,000 fish through December 31, 2005; and by the transplantation of the younger juveniles to viable habitat upstream, and of older smolts to the lagoon or ocean; and
Ø Implementation of a captive broodstock program by Carmel River Steelhead Association and California Department of Fish & Game, and planting of 186,882 juvenile fish, including 73,786 fry, 84,679 fingerlings, and 28,417 smolts during the period from 1991 to 1994.
Though overall populations are improved since the inception of the Mitigation Program in 1990, District staff has noticed a decline in the adult run since 2001, even though the juvenile population density have increased or fluctuated within a “normal” range. At present, the reasons for lower adult returns are not obvious, but may be related to a combination of controlling and limiting factors including: (a) better spawning conditions in the lower Carmel River (i.e., fish spawn before they reach the counter at the dam); (b) chronic poor water quality in the lagoon that causes annual fish die-offs or high predation, especially in low-flow years, thus resulting in fewer returning adults; (c) low numbers of juvenile fish in 1999, 2001, and 2004 affecting subsequent adult populations; (d) migration barriers such as the Old Carmel River Dam; (e) the impacts of fishing (i.e., take associated with catch-and-release fishing in the winter season can adversely affect spawning activity and nests, and take of juvenile steelhead in the upper watershed during the Spring/Summer trout season reduces the number of fish that reach the ocean); and (f) poor ocean conditions.
A recent challenge that may
remain for some years is the potential effects of substantive physical and
operational changes to San Clemente Dam required by the California Department
of Water Resources, Division of Safety of Dams (DWR/DSOD), including possible
removal of the dam. The most significant
issue is the effect of released sediment from the reservoir on downstream river
habitat, proper functioning of MPWMD’s Sleepy Hollow Steelhead Rearing Facility,
and downstream property owners (flood elevations). Major changes include: (1) lowering of the
reservoir water level to address seismic safety concerns; (2) significant
changes in the sediment regime in the
District staff continues to provide technical expertise and scientific data to Cal-Am engineers and environmental consultants, DWR/DSOD, California Department of Fish & Game, NOAA Fisheries, U.S. Fish and Wildlife Service, and others involved in addressing the resource management issues associated with seismic retrofit of San Clemente Dam.
The
In these areas, natural
recruitment has led to vigorous vegetation encroachment that, in some areas,
may constrict high flows and threaten bank stability. MPWMD continues to monitor these areas
closely and to develop a management strategy to balance protection of native habitat
with the need to reduce erosion potential.
Environmental review of proposed projects and
the process of securing permits are quite complex, and require an exhaustive
review of potential impacts.
In
contrast to areas with perennial flow, the recovery of the streamside area
between Rancho Cañada and Quail Lodge has been impacted by increased
groundwater extraction. In this reach,
only irrigated areas are able to sustain a diversity of plant species. Plant stress in the late summer and fall is
evident in non-irrigated portions of the river.
In these areas, streambanks exhibit unstable characteristics during high
flows, such as sudden bank collapse, because of the lack of healthy vegetation
that would ordinarily provide stability.
Restoration
project areas sponsored by MPWMD over the past 20 years continue to mature and
exhibit more features of relatively undisturbed reaches, such as plant
diversity and vigor, complex floodplain topography, and a variety of in-channel
features such as large wood, extensive vegetative cover, pools, and
riffles. However, areas that were
repaired after the 1995 and 1998 floods are still developing these natural
features. In part, the location and
geometry of the projects constrain the rate of progress toward a fully restored
stream channel (i.e., several are located in highly-developed narrow sections
of the river impacted by groundwater extraction). Also, many of these projects relied heavily
on the use of bank-hardening (e.g., rip-rap) to stabilize banks, which can
discourage plant vigor and diversity.
The
most significant trends include the following:
Ø
increased oversight of
channel maintenance and restoration activities by Federal agencies,
Ø
increased groundwater
extraction downstream of
Ø
vegetation
encroachment into the channel bottom,
Ø
increased avian (bird)
species diversity, and
Ø
maturing of previous
restoration projects.
Sand contributed by erosion in
the Tularcitos Creek drainage and from the collapse of
It is
likely that the following trends will continue or develop in the near future:
Ø
Permit applications by
MPWMD for river maintenance and restoration work will come under great scrutiny
at all levels of government. More
stringent avoidance and mitigation requirements will be placed on activities
that could have potential negative impacts on sensitive aquatic species or
their habitats.
Ø
Activities that
interrupt or curtail natural stream functions, such as lining streambanks with
riprap, will be discouraged or denied permits.
Activities that increase the amount of habitat or restore natural stream
functions are more likely to be approved.
Ø
Additional work to add
instream features (such as large logs for steelhead refuge or backwater channel
areas for frogs) will be necessary to restore and diversify aquatic habitat.
Ø
Major restoration
projects completed between 1992 and 1999 will require additional work to
diversify plantings and to maintain irrigation systems during the establishment
period (varies from 5 to 10 years depending on environmental conditions and the
availability of staff resources).
Streambank repairs may be necessary after high flows as previously
installed structural protection projects go through an initial adjustment
period.
A comprehensive long-term solution to river degradation requires a significant increase in dry- season water flows in the lower river to pre-development levels, a reversal of the incision process, and reestablishment of the river’s natural meander pattern. Of these, MPWMD has made progress with increasing summer low flows and in studying the effects of an increased sediment load to the river. Reversal, or at least halting of channel incision, which contributes to bank collapse, may be possible if the supply of sediment is brought into balance with the transport capacity of the river (the system is currently “sediment starved”). With San Clemente Reservoir over 90% filled with sediment, it is likely that the supply of sediment downstream of the San Clemente Dam will increase in the very near future.
Presently, the California Department of Water Resources (DWR) and the U.S. Army Corps of Engineers are jointly moving forward on a combined Environmental Impact Report and Statement (EIR/EIS) concerning alternatives to remediate the safety deficiencies that have been identified at San Clemente Dam. A new combined Draft EIR/EIS is expected to be completed by mid-2006. In the interim, DWR has directed Cal-Am to draw San Clemente Reservoir down and maintain it at 10 feet lower than the spillway, except between February 1 and April 15 (to allow for downstream migration of steelhead).
It is likely that sediment supply in the main stem downstream of the dam will increase in the near future, which could help elevate or maintain the level of the river channel bottom. Over the long term, an increase in sediment supply could help reduce streambank instability. Reestablishing a natural meander pattern presents significant political, environmental, and fiscal challenges, and is not currently being considered as part of the Mitigation Program.
Vegetation Restoration and Irrigation
To the
maximum extent possible, MPWMD-sponsored river restoration projects incorporate
a functional floodplain that would be inundated in relatively frequent storm
events (those expected every 1-2 years).
For example, low benches at the Red Rock and All Saints Projects have
served as natural recruitment areas, and are currently being colonized by black
cottonwoods, sycamores and willows. In addition, willow and cottonwood pole
plantings in these areas were installed with a backhoe, which allows them to
tap into the water table. These techniques have been successful and have
reduced the need for supplemental irrigation.
However, as pumping has increased in the lower
The Conservation Agreement
between Cal-Am and NOAA Fisheries has changed the lower
Channel Vegetation Management
Another notable trend relating to the District’s vegetation management program was the widening of the channel after the floods in 1995 and 1998. With relatively normal years following these floods, the channel has narrowed as vegetation recruits on the streambanks and gravel bars. Current Federal regulations, such as the “ESA Section 4 (d)” rules promulgated by NOAA Fisheries to protect steelhead, significantly restrict vegetation management activities. Currently, there are relatively few physical channel restrictions and erosion hazards in the lower 15 miles of the river. In the absence of high winter flows capable of scouring vegetation out of the channel bottom, encroaching vegetation may significantly restrict the channel. As vegetation in the river channel recovers from the high flows of 1995 and 1998 and matures in the channel bottom, more conflicts are likely to arise between preserving habitat and reducing the potential for property damage during high flows. MPWMD will continue to balance the need to treat erosion hazards in the river yet maintain features that contribute to aquatic habitat quality.
Permits for Channel Restoration and Vegetation Management
To cope
with the rising level of environmental analysis and documentation necessary to
obtain permits, MPWMD sought and obtained a long term permit from the Army Corps
and the California Regional Water Quality Control Board. In January 2001, the District applied to the
California Department of Fish & Game (CDFG) to renew a long term Memorandum
of Understanding (MOU) with CDFG to conduct regular maintenance and restoration
activities. The District continued to
pursue this MOU during FY 04-05; however, CDFG did not issue a renewal until
the fall of 2005. The District may also
seek long-term permits or agreements with other regulatory agencies including
the Monterey County Planning and Building Inspection Department and the
Monterey County Water Resources Agency.
Monitoring Program
Vegetative moisture stress fluctuates depending on the
rainfall, proximate stream flow, and average daily temperatures, and tends to
be much lower in above-normal rainfall years. Typical trends for a single
season start with little to no vegetative moisture stress in the spring,
when the soil is moist and the river is
flowing. As the river begins to dry up in the lower
With respect to riparian songbird diversity, populations dropped after major floods in 1995 and 1998 because of the loss of streamside habitat. However, they have rebounded in the last few years and have shown some of the highest diversity since monitoring began in 1992, indicating that the District mitigation program is preserving and improving riparian habitat.
The District continues to support and encourage the ongoing habitat restoration efforts in the wetlands and riparian areas surrounding the Carmel River Lagoon. These efforts are consistent with goals that were identified in the Carmel River Lagoon Enhancement Plan, which was partially funded by the District. The District continues to work with various agencies and landowners to implement restoration of the Odello West property and the Odello East property across Highway 1. Because of the restoration activities on the south side of the lagoon, the District has concentrated its monitoring efforts on the relatively undisturbed north side. Staff have also tested water quality, attended meetings and had discussions with other agencies regarding the use of an old agricultural well and treated water from the Carmel Area Wastewater District to augment the lagoon during periods of low water.
The District expanded its long-term monitoring around the lagoon in 1995 in an attempt to determine if the reduction in freshwater flows due to groundwater pumping upstream might be changing the size or ecological character of the wetlands. Demonstrable changes have not been identified. Because of the complexity of the estuarine system, a variety of parameters are monitored, including vegetative cover in transects and quadrats, soil and water conductivity, and hydrology. It is notable that due to the number of factors affecting this system, it would be premature to attribute any observed changes solely to groundwater pumping. During this period, for example, there have been two extremely wet years (1995 and 1998), one wet year (2005), and two above-normal years (1996 and 1997), in terms of runoff. Other natural factors that affect the wetlands include introduction of salt water into the system as waves overtop the sandbar in autumn and winter, tidal fluctuations, and long-term global climatic change. When the District initiated the long-term lagoon monitoring component of the Mitigation Program, it was with the understanding that it would be necessary to gather data for an extended period in order to draw conclusions about well draw-down effects on wetland dynamics. It is recommended that the annual vegetation, soil conductivity, topographical and wildlife monitoring be continued in order to provide a robust data set for continued analysis of potential changes around the lagoon.
Lagoon
bathymetric cross sectional surveys, initially conducted in 1988, have been
completed annually during the dry season since 1994. These data are useful in assessing changes in
the sand supply within the main body of the lagoon. Although significant sand accumulation was
observed during the June 2005 surveys, it is too early to tell if this is the
beginning of a trend or merely a short-term change. In general, no major trends indicating sand
accumulation or depletion have been identified.
These data provide answers to questions concerning whether or not the
lagoon is filling up with sand, thus losing valuable habitat.
Program Costs
Mitigation Program costs for July
2004 through June 2005 totaled approximately $2.19 million. The annual cost of mitigation efforts varies
because several mitigation measures are weather dependent. However, the overall costs have remained
fairly constant (about $1.3-$1.7 million) over the past few years, with one
exception in FY 2000 when an additional $981,786 was added to the capital
expense program to fund one half of the acquisition cost of the District’s new
office building, bringing the expenditure total to over $2.6 million that
year. The FY 2004-2005 expenditures are
about $650,000 higher than the previous fiscal year. Approximately, $363,000 of that amount is
attributable to water supply augmentation efforts (i.e., aquifer storage and
recovery) to help reduce impacts to the
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Author:
MPWMD staff
Table I-1
SUMMARY OF COMPONENTS OF
MPWMD MITIGATION PROGRAM
July 1, 2004 – June 30, 2005
-- Smolt rescues
-- Build acclimation facility/tagging study
-- Juvenile rescues
-- Build mid-Valley holding facility
-- Adult counts at San Clemente Dam
-- Juvenile population surveys
-- Spawning habitat restoration
--
Fish planting (steelhead broodstock program)
-- Coastal Salmon Recovery Program grant (began mid-2001)
-- Modify critical riffles
--
-- Channel clearing
-- Vegetation monitoring
-- Track and pursue violations
-- River Care Guide booklet
-- CRMP Erosion Protection Program
-- Water quality/quantity
-- Vegetation/soils
_______
Note 1: Mitigation measures are
dependent on implementation of the Lagoon Enhancement Plan by the California
Department of Parks and Recreation, the land owner and CEQA lead agency. Portions of the Enhancement Plan are being
implemented by Caltrans as part of a “mitigation banking” project.
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Table I-2
Summary of Mitigation
Program Accomplishments in 2004-2005
MITIGATION
ACTION |
MAJOR
ACCOMPLISHMENTS IN FY 04-05 |
|
|
Manage Water Production |
Developed and implemented multi-agency Memorandum of Agreement and quarterly water supply strategies; worked cooperatively with resource agencies implementing the federal Endangered Species Act. Implemented ordinances that regulate water distribution systems. |
Manage Water Demand |
Inspected 1,697 properties for
conservation compliance, which saved an estimated 24 acre-feet (AF) through
required retrofits; provided retrofit refunds for 305 applications, saving an
estimated 6.9 AFY; conducted public outreach for conservation program. Implemented Ordinance No. 109 enabling sale
of water entitlements to properties within Del Monte Forest to fund expanded |
Monitor Water Usage |
Complied with SWRCB Order 95-10 for Water Year 2005. |
Augment Water Supply |
Conducted required
environmental review studies for Draft Environmental Impact Report (EIR) and
Environmental Assessment (EA) for
MPWMD Phase 1 Aquifer Storage and Recovery (ASR) Project. Prepared comprehensive matrix of regional
water supply proposals, including three desalination projects, ASR and
reclamation. Participated on technical committee
evaluating options for seismic safety and sediment management at San Clemente
Dam. Injected permit limit of 350 AF
into |
|
Remained within Water Allocation Program limits. |
Determine Drought Reserve |
Rationing was not required due to adequate storage reserve. |
Steelhead Fishery Program |
Counted 328 adult fish passing San Clemente Dam; rescued 6,124 young steelhead from drying reaches of the Carmel River in July 2004-June 2005 period; operated Sleepy Hollow Steelhead Rearing Facility, including protecting pumps and other equipment from significant increase in sediment emanating from San Clemente Dam; stocked 16,269 rescued fish in Facility in May-September 2004 with roughly 42% survival; conducted annual juvenile fish population survey; conducted California Stream Bio-assessment Procedure (benthic invertebrate sampling at 6 stations); coordinated with Cal-Am regarding operations to maximize fish habitat. |
Riparian Habitat Program |
Continued streambank revegetation between Via Mallorca and Esquiline Roads; completed detailed assessment of a portion of the Carmel River Watershed under contract with the Carmel River Watershed Conservancy; coordinated state and federal grant application efforts for Integrated Regional Water Management Plan; obtained a Routine Maintenance Agreement with Calif. Dept. Fish & Game for MPWMD vegetation maintenance activities; carried out vegetation management at three sites; diversified restoration techniques and experimented with planting techniques to allow trees to mature more quickly with less irrigation; inspected private projects for compliance with permit conditions; carried out several enforcement actions to address unlawful construction activities along the river; completed annual river inspection; continued long-term monitoring of physical and biological processes; made presentations on MPWMD restoration techniques to general interest and scientific groups. |
Lagoon Habitat Program |
Provided technical expertise and data to multi-agency sponsors of lagoon restoration program; assisted Carmel Area Wastewater District evaluate possible Lagoon augmentation with recycled water; continued vegetation habitat monitoring at eight transect locations; monitored four bathymetric transects; participated in interagency meetings regarding management of lagoon in winter storm events. |
|
See Riparian Habitat Program measures. |
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