HomeMy WebLinkAboutRES 2005-31 - Board TRUCKEE DONNER
Public Utility District
Resolution No. 2005 - 31
ADOPTION OF THE URBAN WATER MANAGEMENT
PLAN
WHEREAS,the California Legislature enacted Assembly Bill 797(Water Code Section 10610 et seq.,
known as the Urban Water Management Planning Act)during the 1983-1984 Regular Session,and as
amended subsequently,which mandates that every supplier providing water for municipal purposes to
more than 3,000 customers or supplying more than 3,000 acre feet of water annually, prepare an Urban
Water Management Plan,the primary objective of which is to plan for the conservation and efficient use
of water; and
WHEREAS, the District is an urban supplier of water providing water to over 3,000 customers; and
WHEREAS,the Plan shall be periodically reviewed at least once every five years,and that the Truckee
Donner Public Utility District shall make any amendments or changes to its plan which are indicated by
the review; and
WHEREAS, the District has therefore, prepared and circulated for public review a draft Urban Water
Management Plan,and a properly noticed public hearing regarding said Plan was held by the Truckee
Donner Public Utility District on October 5, 2005 and continued on November 2, 2005; and
WHEREAS,the Plan must be adopted by December 31,2005 after the public review and hearing,and
filed with the California Department of Water Resources within thirty days of adoption; and
NOW,THEREFORE, BE IT RESOLVED by the Board of Directors of the Truckee Donner Public Utility
District as follows:
1. That the above recitations are true and correct.
2. That the 2005 Urban Water Management Plan is adopted.
PASSED AND ADOPTED by the Board of Directors at a meeting duly called and held within the District
on the second day of November, 2005 by the following roll call vote:
AYES: Directors, Aguera, Hemig, Sutton Taylor and Thomason
NOES: None
ABSENT: None
TRU E DO R PUBLIC U LITY DISTRICT
J. Hemig, esident
ATTEST:
Peter L. Holzmeiste , District Clerk
TABLE OF CONTENTS
y '- i SECTION 1—INTRODUCTION
!N��ic !*;i ! „ PUBLIC PARTICIPATION........................................................................................................1-1
INTERAGENCY COORDINATION.........................................................................................1-2
ENVIRONMENTAL REVIEW..................................................................................................1-2
URBANWATER PLAN ADOPTION......................................................................................................................1-3
DEFINITIONS.............................................................................................................................1-3
MANAGEMENT PLAN SECTION 2—SERVICE AREA
DISTRICT HISTORY AND BACKGROUND..........................................................................2-1
CLIMATE....................................................................................................................................2-4
CURRENT AND PROJECTED POPULATION........................................................................2-4
SECTION 3—EXISTING WATER FACILITIES
PRESSURE ZONES....................................................................................................................3-1
GROUNDWATERWELLS........................................................................................................3-1
s DONNER LAKE INTAKE AND GREENPOINT SPRINGS....................................................3-4
OTHERWATER SUPPLY SOURCES......................................................................................3-5
PUMPINGSTATIONS...............................................................................................................3-5
STORAGETANKS.....................................................................................................................3-5
CONTROLVALVE STATIONS................................................................................................3-5
PIPELINES..................................................................................................................................3-5
SECTION 4—WATER DEMANDS
TRUCKEE SYSTEM WATER PRODUCTION........................................................................4-1
HIRSCHDALE SYSTEM WATER PRODUCTION.................................................................4-4
Adopted NON-POTABLE WATER PRODUCTION................................................................................4-4
BUILDOUT WATER DEMAND...............................................................................................4-5
FUTURE POTABLE WATER DEMANDS...............................................................................4-6
November, 2005
SECTION 5—WATER SUPPLY SOURCES
MARTIS VALLEY GROUNDWATER BASIN........................................................................5-1
QUANTITY OF GROUNDWATER IN THE MARTIS VALLEY BASIN..............................5-1
Board of Directors DONNER LAKE SURFACE WATER SUPPLY AND GREENPOINT SPRINGS..................5-2
Joseph R.Aguera RELIABILITY OF WATER SUPPLY.......................................................................................5-3
J.Ronald Hemi EXISTING PRODUCTION CAPACITY IN RELATION TO PROJECTED DEMANDS.......5-3
g IMPACT OF UPCOMING WATER QUALITY REGULATIONS...........................................5-6
PatriciaS.Sutton Arsenic Regulations.....................................................................................................................5-6
TimTaylor Radon Regulations.......................................................................................................................5-7
William L.Thomason Availale IHer Production Capacity Cons idering Hier Q uality Regulations........................5-7
ADDITIONAL WATER PRODUCTION CAPACITY..............................................................5-8
RECOMMENDEDIMPROVEMENTS......................................................................................5-9
Prepared by:
Neil Kaufman
Water System Engineer
Page i
LIST OF FIGURES
SECTION 2—SERVICE AREA
Figure2-1,Location Map............................................................................................................2-2
Figure 2-2,Water System Services Areas...................................................................................2-3
Figure 2-3,Historic And Projected Population,1980-2025........................................................2-6
SECTION 3—EXISTING WATER FACILITIES
Figure 3-1,Location of Water Supply Sources...........................................................................3-3
Figure 3-2,Location of Pumping Stations...................................................................................3-6
Figure 3-3,Location of Storage Tanks and Control Valve Stations............................................3-8
SECTION 4—WATER DEMANDS
Figure 4-1,Historic Average Day,Minimum Day and Maximum Day Demands,1965-2004..4-2 SECTION 1
Figure 4-2,Project Increase in Water Demand............................................................................4-7
SECTION 5—WATER SUPPLY SOURCES
Figure 5-1,Projected Potable Water Demand vs.Existing Supply Capacity,1990-2025...........5-5
Figure 5-2,Projected Potable Water Demand vs.Proposed Supply Capacity,1990-2025.......5-11 INTRODUCTION
Figure 5-3,Location of Test Wells and Future Well Sites........................................................5-12
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Section 1-Introduction
PLAN ADOPTION
The District's Board of Directors adopted the 2005 Urban Water Management Plan on
November 2,2005. A copy of the adopting resolution is included in Appendix C.
DEFINITIONS
There are four related terms that are used throughout this document. In order to properly
understand the issues facing the District into the future, it is necessary that these terms be
defined:
• Water Consumption-The amount of water used by customers and billed as sales. In the
District's case,this is the amount that would be billed as sales if all uses were metered.
• Water Demand-The amount of water used within a water distribution system.Water SECTION 2
demand is comprised of two components: water consumed (billed as sales) and
unaccounted-for water.
• Water Production-The amount of water introduced into the water system. System-wide
water demand should equal the total water production. Discussions of water production SERVICE AREA
capacity involve facilities such as wells and treatment plants used to introduce water into
the distribution system to meet demand.
• Water Supply -The total amount of water available to be used on an annual basis,
provided that sufficient water production capacity exists.
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Page 1-3
Section 2—Service Area
In 1998,the Lahontan Water System was constructed and dedicated to the Placer County Water
Agency(PCWA). This system is located in the Martis Valley about three miles from downtown
Truckee. All of PCWA's other facilities are located in the Sierra foothills in the vicinity of
Auburn. In order to minimize operating expenses,PCWA contracted with the District to operate
the Lahontan system.
Prior to 2001,there were two other water purveyors in the Truckee area. The District has taken
possession of both water systems since that time. In the Summer of 2001,the District took
possession of the Donner Lake Water System. In February of 2002,the District took possession
of the Glenshire Mutual Water Company's system. Figure 2-2 shows the District's current
water service area,along with PCWA's Lahontan service area is shown in Figure 2-2.
CLIMATE
The service area of the Truckee System is located in the eastern Sierra Nevada mountains at the
_.,.._�.
east end of Donner Pass. Water system service elevations range of from 5800 to over 7300 feet.
-— - - y The area receives substantial amounts of precipitation during the winter as both rain and snow.
Average high temperatures range from the low 80s in Summer to the low 40s in Winter.
Average low temperatures range from the low 40s in Summer to the mid teens in Winter.
s j CURRENT AND PROJECTED POPULATION
The Town of Truckee and surrounding areas have been experiencing slow to moderate growth
Truckee S wv"k" over the past 50 years. Population within the town has increased from 2,528 in 1970 to a current
population of about 15,100. Table 2-1 shows this historic population data.
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The Town of Truckee's current General Plan was adopted in 1996. That document projected
population growth in the area to occur at a rate of about two percent per year. However,the
...... population projections given in the General Plan are below the actual growth experienced in
}W-......... = —'•?� PLACER Glj;N"
Truckee. The General Plan projected 14,417 residents in the year 2005, and the actual
population reached this total in 2001. The General Plan projected an anticipated 2015 population
t �cwa of 17,253. If current population growth rates continue,this value will be reached in 2008.
(� WA
The Town of Truckee is currently preparing a General Plan Update that will be published in
Draft form during 2005. That document projects population growth of 2.0 percent into the future
with a buildout population of about 23,300 permanent residents. Based upon the projected
growth rate in the 2005 Draft General Plan Update,historic and projected population totals are
TR Public
UW DON web r Sysliern Se�� given in Figure 2-3.
.� Public Utllily Dislrid
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The economy of Truckee and the surrounding area relies upon tourism as the main industry.
There are a significant number of residential units that are not occupied on a full-time basis with
estimates ranging as high as 75 to 80 percent for certain portions of the service area. However,
the District is not aware of any studies that have confirmed these estimates. This part time
occupancy is reflected in the 2005 Draft General Plan Update, showing a total of 18,256
dwelling units at buildout with a corresponding population of only 23,300 for a density of 1.28
persons per dwelling trait.
Page 2-4
SECTION 3
EXISTING WATER FACILITIES
The District's water system is reasonably complicated with 48 pressure zones, 28 pu raping
stations, 12 active wells and 36 storage tanks. All demands in the Truckee, Glcnshire and
Hirschdale areas of the system are currently served by groundwater wells, although natural
springs have been used in the Truckee area as a water supply in the past. Demands in the Donner
{ Lake area are currently supplied by surface water.
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PRESSURE ZONES
There are currently 48 pressure zones in the service area,with service elevations ranging from
5535 feet in Hirschdale to 7370 feet at the highest point in Tahoe Donner. Static service
pressures ranges from a high of about 200 psi to a low of about 20 psi. Approximate minimum
and maximum ground elevations and static service pressures in the pressure zones arc given in
SECTION 3 Table 3-1.
GROUNDWATER WELLS
The District currently has twelve active wells that are used to supply potable water to customers.
The total production capacity of the active potable water wells is about 9,555 gpm(13.8 mgd).
EXISTING WATER FACILITIES The wells are located at various locations throughout the distribution system. The locations of
the wells are shown in Figure 3-1 and selected well characteristics are shown in Table 3-2.
Two additional wells are used to serve non-potable water demands. The Donner Creek Well is
connected to a separate piping system that is used to provide irrigation water to the Coyote Moon
Golf Course. The Southside No. 1 well is used to supply construction water for contractor use
during the Summer construction season.
C There are four other wells that are not currently used by the District. They are the B Well,Biltz,
Bingham Place and Frost Fire Place wells. All four of these wells are low in capacity and the
District does not intend to use these wells in the future. However,they have not been abandoned
in accordance with California State requirements and are therefore considered inactive.
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Page 3-1
Section 3-Water System Facilities Section 3-Water System Facilities
Table 3-2. Summary of Data for Potable Wells OTHER WATER SUPPLY SOURCES
Name Pump Size, Current In the past,the District has used natural springs as water supply sources. There are three springs
hp Capacity, m' -McGlashen,Southside and Tonini-at which the District has facilities. These springs are not
A Well 20 150 currently used due to their low capacity and the need to treat the water supply in accordance with
Airport 250 2,000 the SWTR. In addition,the District owns water rights to the Sheepherder Springs and Hofert
s Glenshire Drive 100 1,800 Springs,although no facilities exist to utilize these supplies. Figure 3-1 shows the locations of
Hirschdale 35 35
these springs.
Martis Valley Well No.1 350 1,725
Northside 100 810
Prosser Annex 125 400 PUMPING STATIONS
Prosser Heights 30 0 The Truckee System currently has 28 pumping stations located throughout the distribution
Prosser Village 250 1,200 system. These pumping stations move water from lower pressure zones to higher pressure zones
Sanders 75 300 to serve demands in higher elevations of the service area.
Southside No.2 40 225
Well No.20 150 560 The different pumping stations have a variety of configurations, with some facilities taking
Total 9,555 suction directly from distribution system pipelines,while others are located at reservoir sites and
Notes: 1. Current capacity given is based on most recent data use the reservoir as a forebay. Similarly,there is a variety of vertical turbine,end suction and
t horizontal split case pumps. All of the pumps are driven by electric motors.
1 DONNER LAKE INTAKE AND GREENPOINT SPRINGS
At the time of its acquisition by the District in May 2001,the DLWS was served by three small The locations of the pumping stations are shown in Figure 3-2, and selected pump
groundwater wells,the Donner Lake Intake Pump Station and Greenpoint Springs. Since that characteristics are shown in Table 3-3.
time,the three wells have been placed into inactive status and the Intake Pump Station has been
upgraded from about 300 gpm to 1,400 gpm in capacity. The Greenpoint Springs continue to STORAGE TANKS
supply between 100 and 300 gpm to the system. Neither of these facilities is filtered in The Truckee System has 39 storage tanks-36 active and 3 inactive. Most of the tanks provide
accordance with the Surface Water Treatment Rule(SWTR). It should be noted that neither gravity pressure to a portion of the distribution system. Some also function as a forebay for a
source was filtered when the District acquired the DLWS and the system has been subject to a pumping station. The total storage capacity of the active water tanks is about 9.4 ing. Storage
Department of Health Services Compliance Order mandating treatment in accordance with the tank locations are shown in Figure 3-3 and their characteristics are given in Table 34.
SWTR since June 29,1993. Figure 3-1 shows the locations of these surface water sources.
CONTROL VALVE STATIONS
Due to the configuration of the water system, surface water drawn from Donner Lake and There are 38 pressure regulating stations located throughout the Truckee System-29 active and
Greenpoint Springs cannot be utilized outside the Donner Lake area. The system is capable of 9 inactive. These stations provide service to small pressure zones, allow a means to relieve
feeding about 50-70 gpm from the Gateway area into the Donner Lake area through a 2-inch pressure in zones not directly served by a reservoir and provide additional water for fire flow
pipeline underneath Interstate 80. demands. The locations of the stations are shown on Figure 3-3 and selected data on the stations
is given in Table 3-5.
In December 2004,the Richards Boulevard Pump Station was placed into service. The purpose
of this pump station is to pump water from the Gateway area into the Donner Lake area. There is PIPELINES
a segment of 14-inch steel pipeline located just west of the Richards Boulevard Pump Station The existing distribution system consists of about 195 miles of pipeline ranging from 2-inches to
that was installed in 1973. This pipeline is unable to withstand the higher system pressures 24-inches in diameter. The majority of the pipelines are between 4-inches and 8-inches in
{ created by the Richards Boulevard Pump Station and will be replaced in May 2005. Once this diameter. The oldest piping in the system dates to the 1940s,with the great majority of the
pipeline is replaced,the Richards Boulevard Pump Station will be used to supply water to the system having been installed since 1960. There are a number of different pipeline materials
Donner Lake area. At that time, the Intake Pump Station and Greenpoint Springs will be throughout the system. The majority of the distribution pipelines are steel,with large portions of
removed from potable water service permanently. ductile iron pipe as well.
Page 34 Page 3-5
Section 3-Water System Facilities
Table 3-4. Summary of Stora a Tank Data
Storage Tank Volume, Diameter, Floor Shell Height, Overflow Year
mg feet Elevation feet Elevation Built
Airport 0.60 70 5886 20 5906 1979
Armstrong 0.10 27 6310 24 6334 1979
Biltz 0.085 25 6350 24 6374 1985
Bridge Street 6170 1.50 90 6139 32 6171 2002
Donner Trails 1 0.15 36 6022 20 6042 1973
Donner Trails 2 0.15 36 6022 20 6042 1990
Donner View 0.35 40 6861 32 6893 1973
Falcon Point 0.20 39 6469 24 6493 1974
Featherstone 5988 0.36 44 5956 32 5988 2002
Gateway 0.45 60 6021 24 6045 1995
Glacier 0.15 36 7476 24 7500 1972
Greenpoint1 0.03 17 6106 18 6124 1955
Greenpoint2 0.03 17 6106 18 6124 1955
Herringbone 0.30 40 6676 32 6708 1973
Hirschdale 0.10 33.5 5611 16 5627 1988
j Innsbruck 0.20 39 6469 24 6493 1972
Lower Glenshire 1 0.42 55 6139 24 6163 1993
Lower Glenshire 2 0.32 48 6139 24 6163 1972
r � Martiswoods 0.20 40 6276 22 6298 1982
Martiswoods Tower 0.10 20 6338 22 6360 1982
orthside 0.40 55 6003 24 6027 1974
Pinnacle 0.18 31.5 6811 32 6843 1973
Ponderosa Palisades 0.20 40 6276 22 6298 1972
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Prosser Annex 0.215 40 6314 24 6338 1994
- Prosser Heights 0.215 40 6314 24 6338 1963
Prosser Lakeview 0.25 40 6102 28 6130 1971
3 Red Mountain 0.21 39 6100 24 6124 1963
r `>,
Roundhill 0.30 40 6676 32 6708 1974
Sierra Meadows 0.25 34 6110 36 6146 1971
Sitzmark 0.20 39 6469 24 6493 1973
Ski Lodge 0.35 50 6870 24 6894 1971
Dane �T"ft Ski Run 0.10 26 7163 30 7193 1972
cmra vr,.arwn.
Soma Sierra 0.20 40 6262 24 6286 1972
Stockholm 0.32 42 6676 32 6708 1972
Upper Donner Lake 1 0.05 20 6478 22 6500 1960
Upper Donner Lake 2 0.05 20 6478 22 6500 1960
Upper Glenshire 1 0.28 45 6315 24 6339 1991
Upper Glenshire 2 0.21 39 6315 24 6339 1989
Wolfe 0.23 42 6100 24 6124 1993
€ Total 10.0
Page 3-9
SECTION 4
WATER DEMANDS
Law
E 10630. It is the intention of the Legislature,in enacting this part,to permit levels of water management
planning commensurate with the number of customers served and the volume of water supplied.
10631. A plan shall be adopted in accordance with this chapter and shall do all of the following:
10631.(e) (1) Quantify,to the extent records are available,past and current water use,over the same five-year
increments described in subdivision(a),and projected water use,identifying the uses among water
use sectors including,but not necessarily limited to,all of the following uses:
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t (A)Single-family residential;(B)Multifamily;(C)Commercial;(D)Industrial;(E)Institutional
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and governmental;(F)Landscape;(G)Sales to other agencies;(H)Saline water intrusion barriers,
groundwater recharge,or conjunctive use,or any combination thereof,and(1)Agricultural. Figure 4-1. Historic Average Day,Minimum Day and Maximum Day Demands,1965-2004
14.0
(2) The water use projections shall be in the same 5-year increments to 20 years or as far as data is —�—Historic Average Day Demand
available. Historic Maximum Day Demand
-Estimated Maximum Day Demand
12.0 -----1 —t--Historic Minimum Day Demand --------"
TRUCKEE SYSTEM WATER PRODUCTION Note: The large increase in demand from zoos to 2002
Current water production averages 6.64 million gallons per day(mgd)with a peak of 12.61 mgd includes the acquisition of the Donner Lake and Glenshire
that occurred on July 18,2004. Figure 4-1 shows the historical trend of water demand for the 10.0 Wafer Svctamc --------------- - -- - -----------
Truckee System. Table 4-1 gives this information in tabular form. There was a large increase in
demand that occurred in 2002,a result of the District's acquisition of the Donner Lake and
Glenshire Water Systems. V 6.0 ------------------------------------------------------
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Table 4-2 gives a breakdown of sales by customer class for the period of 1995-2004. The
District has only two customer classifications-residential and commercial. All single-family a 6.0 --------------- -- - -- --------
residential customers are charged a flat rate for monthly service. Individual meters are not read
f for single-family residential accounts. In contrast,most of the commercial accounts are billed r
monthly based on actual meter readings. The total residential consumption was determined by 4.0 -
subtracting metered commercial sales from total production. Multi-family residential accounts
such as duplexes,four-plexes and apartments are billed monthly based on actual meter readings r........
and are considered as commercial accounts for this analysis. 2.0 - - -- ------ - - --- -
In actuality, total residential usage is less than the value given in Table 4-2. Typically, a
percentage of water introduced into the system from supply sources is not recovered through 0.0
sales. This water not recovered through sales is designated as"unaccounted-for water." The 1965 1970 1975 1990 1985 1990 1995 2000
likely reasons for discrepancies between production and sales are meter recording errors from Year
uncalibrated or worn meters, system leakage, and water uses such as fire fighting usage,
construction water,illegal connections to the water system and water used by the District for
maintenance purposes such as main flushing. Industry literature has cited unaccounted-for water
percentages as high as 36 percent in older systems with high leakage rates and rates below 10
percent are typical water agency goals. Due to the fact that residential connections are not
teetered,data is not available to determine the volume of unaccounted-for water.
Page 4-1
Section 4-Water Demands Section 4-Water Demands
BUILDOUT WATER DEMAND FUTURE POTABLE WATER DEMANDS
Water demand projections for buildout conditions were developed during preparation of the 2004 Average day potable water demands will increase from 6.64 tngd currently to 13.05 mgd at
Water Master Plan Update. These projections were based on anticipated development of all buildout conditions. Similarly,maximum day potable water demands will increase from 12.61
currently vacant parcels. Currently developed parcels were assumed to continue into the future mgd currently to 25.46 mgd at buildout. Of significant importance is the how rapidly demand
with no change in water usage. A projected buildout demand was then calculated for each will increase from existing to buildout conditions. Based on recent historic data,the demand
vacant parcel based on the anticipated land use and the size of the parcel. For ease of discussion, projection shown in Figure 4-2 was developed. This projection is based on the five-year period
the service area was divided into seven planning areas. Buildout demands for the Hirschdale of 1997 to 2001,which experienced a growth in water demand of about 7.2 percent annually.
F Water System were included within the Glenshire Planning area. Detailed information regarding With this projection,the existing service area will reach buildout conditions in the year 2027.
these buildout projections is given in Section 3 and Appendices A through G of the 2004 Water The use of more recent data is skewed due to the acquisition of the Donner Lake and Glenshire
Master Plan Update. The projections given in Tables 4-5 and 4-6 are taken directly from the water systems in 2002.
2004 Water Master Plan Update.
Table 4-5. Buildout vera a Dav Potable Water Demand by Planning Area
Residential Commercial Total,
Planning Area Demand an d Demand mgd mgd
Donner Lake 0.92 0.04 0.96
Downtown/Airport 0.36 1.92 2.28
Gateway 0.48 0.77 1.25
Glenshire 1.11 0.02 1.13
Northeast 1.22 1.56 2.78
Southside 1.06 0.14 1.20
Tahoe Donner 3.30 0.15 3.45
F Total 8.45 4.60 1 13.05
Table 4-6. Buildout Maximum Day Potable Water Demand by Planning Area
Residential Commercial Total,
Planning Area Demand an d Demand,mgd mgd
Donner Lake 1.75 0.07 1.82
Downtown/Airport 0.69 3.71 4.40
Gateway 0.92 1.62 2.54
Glenshire 2.65 0.06 2.71
Northeast 2.32 2.76 5.08
Southside 2.02 0.24 2.26
Tahoe Donner 6.28 0.37 6.65
Total 16.63 8.83 25.46
It is assumed that the Donner Creek Irrigation Well will continue to provide about 84 million
4 gallons per year of irrigation water to the Coyote Moon Golf Course at buildout conditions.It is
also assumed that there will be a minimal construction water demand of 1.0 million gallons per
year once buildout conditions are reached. Therefore,buildout non-potable water demand is
expected to be 85 million gallons annually. If the School District athletic fields and Meadow
Park are connected to the Donner Creek Irrigation System,there will be a decrease in potable
water demand and corresponding increase in irrigation water demand. Total withdrawals from
the groundwater basin will not change.
Page 4-5 Page 4-6
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SECTION 5 Section 5—Water Supply Sources
WATER SUPPLY SOURCES
the MVGB has improved over the years,the estimates of available water have been refined and
Law therefore,the most recent studies are considered to have the best information regarding water
10630. It is the intention of the Legislature,in enacting this part,to permit levels of water management availability.
planning commensurate with the number of customers served and the volume of water supplied.
10631. A plan shall be adopted in accordance with this chapter and shall do all of the following: The 1975 study by Hydro-Search estimated annual recharge to the MVGB at 18,200 AFY with a
total subsurface storage volume of 1,050,000 acre-feet. The 1975 study also concluded that
10631.(b) Identify and quantify,to the extent practicable,the existing and planned sources of water available to 13,000 AFY was available for consumptive uses. The 1980 and 1995 studies were essentially
the supplier over the same five-year increments[to 20 years or as far as data is available.] updates of the 1975 study and provided additional information regarding the MVGB. However,
a new evaluation of groundwater availability was not conducted as part of those efforts.
This section provides an evaluation of the available water supplies to meet the existing and
future water demands through buildout of the District's service area. Recommendations The 2001 study represented the first reconsideration of the MVGB water availability since the
necessary for the District to continue providing adequate water at acceptable quality are made for 1975 study. This 2001 study concluded that total subsurface storage volume is 484,000 acre-
both existing and future conditions. feet,with an annual recharge of 29,165 AFY. An additional 5,433 AFY is recharged to the
upper layer of the MVGB by the Tahoc-Truckee Sanitation Agency's (TTSA) wastewater
MARTIS VALLEY GROUNDWATER BASIN treatment plant. This 2001 study concluded that the sustainable yield of the MVGB is 24,000
The District's currently obtains the majority of its drinking water through the pumping of AFY.
groundwater from the Martis Valley Groundwater Basin(MVGB). The MVGB is a multiple
aquifer system consisting of basin-fill sedimentary units and interlayered basin-fill volcanic In 2002,a study entitled Independent Appraisal of Martds Valley Ground Water Availability,
Nevada and Placer Counties was conducted by Kennedy/Jenks Consultants. This study agreed
units. Detailed information regarding geology of the MVGB can be found in a number of
i sources,including: with the sustainable yield estimate of 24,000 AFY by Nimbus Engineers in 2001. The
C Kennedy/Jenks study also concluded that the 24,000 AFY likely underestimates the amount of
• Availability of Ground Water. Prepared for the Truckee Donner Public Utility District by water available on a sustainable basis since the 2001 Nimbus study underestimated both basin
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Hydro-Search Inc. Reno,Nevada.February 1975. recharge and ground water discharge to tributary streams.
• Truckee and Vicinity Ground-Water Resource Evaluation. Prepared for Dart Resorts Inc. In April 2003,a study conducted by InterFlow Hydrology and Cordilleran Hydrology entitled
6 by Hydro-Search Inc. Reno,Nevada.April 1980. Measurement of Ground Water Discharge to Streams Tributary to the Truckee River in Martis
Valley,Nevada and Placer Counties,California examined the issue of ground water discharge
r • Ground-Water Management Plan,Phase 1,Martis Valley Ground-Water Basin, Basin to tributary streams and concluded that about 34,000 AFY of water is available on a sustainable
No.6-67,Nevada and Placer Counties. Prepared for the Truckee Donner Public Utility basis.
District by Hydro-Search Inc. Reno,Nevada.January 1995.
The California Department of Water Resources has not determined that the MVGB is being
• Ground Water Resource Evaluation. Prepared For The Truckee Donner Public Utility overdrafted and there are not any known instances of contamination of the MVGB. The MVGB
District by Nimbus Engineers. Reno,Nevada. November 2000. is currently unadjudicated and none of the groundwater users has expressed a desire to have the
basin adjudicated to date. Therefore,it is reasonable to assume that,at a minimum,the 24,000
• Ground Water Availability In The Martis Valley Ground Water Basin,Nevada and Placer AFY of water cited in the Nimbus study is available to support development in Truckee and the
Counties, California. Prepared for the Truckee Donner Public Utility District, Placer surrounding areas.
County Water Agency and Northstar Community Services District by Nimbus Engineers. DONNER LAKE SURFACE WATER SUPPLY AND GREENPOINT SPRINGS
Reno,Nevada. March 2001. As described in Section 3,the District currently operates two surface water sources that provide
water to the Donner Lake area:an Intake Pump Station with a capacity of 1,400 gpm and the
• Supplemental Report to California's Groundwater—Bulletin 118,Update 2003. Prepared
by the California Department of Water Resources.Sacramento,California. October Greenpoint Springs with a capacity between 100 and 300 gpm. These facilities will be removed
2003. from service permanently during the Summer of 2005 and the District will discontinue using
these surface water supplies at that time.
QUANTITY OF GROUNDWATER IN THE MARTIS VALLEY BASIN
A number of studies have been conducted over the past 30 years to investigate and quantify the
amount of water available in the MVGB. As knowledge regarding the geologic characteristics of
Page 5-1 Page 5-2
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Section 5-Water Supply Sources
IMPACT OF UPCOMING WATER QUALITY REGULATIONS
The Environmental Protection Agency(EPA)has promulgated new regulations regarding arsenic
in drinking water supplies. New regulations regarding radon levels in drinking water are
anticipated in the near future. Both of these constituents are present in the existing wells at
levels below the existing maximums.
Arsenic Regulations
The new arsenic regulations set a maximum level of 10 mg/L and will become effective on
January 1,2006. Table 5-2 gives a summary of the arsenic levels in the existing wells based on
the most recent test results. As shown by the data,the Hirschdale and Northside Wells will
exceed the proposed arsenic limit. Two methods have been identified to bring these sources into
Figure 5-1.Projected Potable Water Demand vs.Existing Production Capacity,1990-2025 compliance with the proposed arsenic level.
30.0
--*.—HistoricAverageDayDemand Table 5-2. Groundwater Well Arsenic and Radon Levels
...........Future Average Day Demand Projection
•••Historic Maximum Day Demand Name Arsenic Level u /L Radon Level Ci/L
—Future Maximum Day Production Projection A Well Not Detectable 540
zs.o - Airport 10 1,600
••--•••Total Production Capacity
Firm Production capacity / r Glenshire Drive 10 765
Hirschdale 26 570
20.0 -- ---------- ------------------ /� Martis Valley Well No.1 9.8 Data Not Available
y -''� Northside 38 990
v r✓' Prosser Annex Not Detectable 740
E Prosser Heights Not Detectable Not Detectable
15.o 'r -_-_---__-_-._ Prosser Village 7 560
— —
t a Sanders 4 1050
Ay
Southside No.2 Not Detectable 885
Well No.20 Not Detectable 293
10.0 - - Arsenic data taken from Truckee Water System 2003 Water Quality Report
Radon data taken from testing performed in November 1999
One method involves the installation of arsenic treatment systems at the affected wells. These
5.0 - -- --- -------- -- --- ------------
systems utilize either a coagulation/filtration or ion exchange process. Both processes are quite
expensive with capital costs estimated at over$600 per gpm of well capacity. Operations and
maintenance is also quite costly,estimated at$0.10 per thousand gallons produced.
0.0
1990 1995 z000 zoos 2010 2015 zozo 2025 The second method is known as"Avoidance." A given well would be removed from service
Year temporarily for testing. The testing will involve isolating a section of the aquifer by scaling off
the casing above and below this level. Water quality samples would then be taken from this
section and tested for arsenic. This process would be repeated for all water bearing strata within
the aquifer. Once the formations containing high levels of arsenic have been identified,the well
casing would be sealed through these formations to prevent the entrance of water containing high
levels of arsenic.
i
During the Summer of 2005,the District will be conducting pilot plant studies to determine the
E feasibility and cost associated with arsenic removal at the Northside Well. If treatment proves
cost effective,the District will be able to utilize the 810 gpm capacity into the future. If an
Avoidance methodology is necessary,it is expected that the capacity of Northside Well will be
reduced to 500 gpm.
Page 5-6
Section 5-Water Supply Sources Section 5-Water Supply Sources
to be balanced with the sustainable yield. The District has held discussions with Placer County Table 5-4. Recommended Water Production Improvements
Water Agency regarding long-term water supply issues in the Martis Valley. Both agencies have Total
agreed that further studies of the basin are necessary,along with an accounting of expected Maximum Day Production Firm Production
buildout demand versus supply for all groundwater users. Year Demand m d Capacity,m d Capacity,m d Notes
1990 6.47 6.9 3.6
The other two water supply options require additional investigations of legal and regulatory 1991 6.88 6.9 3.6
i issues. A draft plan governing the use of surface water in the Truckee River basin has been 1992 5.83 6.9 3.6
f developed and is entitled the"Truckee River Operating Agreement." The use of surface water is 1993 6.63 6.9 3.6
subject to this plan and requires the acquisition of surface water rights. 1994 5.78 7. 4.6
1995 .78 7.66 4.3 Prosser Annex Well Completed
RECOMMENDED IMPROVEMENTS 1996 6.49 7.6 4.3
1997 6.64 7.6 4.3
Based on the expected increase in water demand and the impact of forthcoming water quality 1998 7.22 8.2 4.9 Glenshire Drive Well Completed
regulations, a number of water production improvements are recommended. These 1999 7.63 8.2 4.9
improvements are listed in Table 54. In the short-term,construction of new wells not requiring 2000 8.58 8.6 5.3 Donner Creek Well Capacity Upgrade
filtration is the most reasonable alternatives to pursue. For the purposes of water supply Martis Valley Well No.1 constructed
planning,it is assumed that new wells will have a capacity of 1,500 gpm. If the capacity of new 2001 8.60 10.0 6.7 Donner Creek Well removed from potable
wells differs significantly from this 1,500 gpm value,the recommendations given herein should water service
be adjusted accordingly. 2002 11.47 14.6 11.7 Includes
n ludes DLWS and GWS Demands and
Supply
Small DLWS and GWS Wells removed
With the impending reduction in water production capacity, it is necessary that the District 2003 11.50 15.0 12.1 from potable water service
aggressively pursue construction of two wells immediately to ensure that adequate capacity is Glenshire Drive Well capacity increased
t 2004 12.61 16.7 13.8 Prosser Village Well constructed
available to serve customer demands. Construction of a third well is necessary to provide
Green
adequate firm capacity in the event that a single well is out of service for any length of time 2005 13.16 13.8 10.4 Donner Lake Intake and service.
oint
duringhigh-demand periods. Springs removed from service.
g P New 1,500 gpm Well Constructed
2006 13.71 15.4 12.5 (Featherstone Site).Northside Well
The proposed phasing given in Table 54 is based on anticipated growth in demand throughout capacity reduced to 500 gpm
the service area. An additional four wells will be needed to serve buildout conditions and should 2007 14.26 17.6 14.7 New 1,500 gpm Well Constructed
be constructed as growth and increases in water demand dictate. Figure 5-2 gives the (Fibreboard Site)
relationshipof projected demand to the recommended water supply improvements. 2009 15.35 19.7 16.7
P J PP Y P New 1,500 gpm Well Constructed
I 2009 15.35 19.7 16.9 (Prosser Dam Road Site)
In 2002 and 2003,the District drilled a number of exploration wells in order to identify locations 2010 15.90 19.7 16.9
for future groundwater wells. Exploratory wells were drilled at the locations given in Figure 5- 2011 16.45 19.7 16.9
3. As a result of this exploration well program,the District acquired four well sites. The Prosser 2012 17.00 21.9 19.0 New 1,500 gpm Well Constructed
Village Well was constructed in 2004. In 2005, the District will begin construction of the 2013 17.54 21.9 19.0
Featherstone Well with the goal of having the well available for use in 2006. Property rights to 2014 18.09 21.9 19.0
2015 18.64 21.9 19.0
two other sites(Fibreboard&Prosser Dam Road)have been secured by the District and will be 2016 19.19 24.1 21.2 New 1,500 gpm Well Constructed
used to construct new wells in 2007 and 2009. The District has also identified other potential 2017 19.74 24.1 21.2
wells sites and will be drilling additional test wells once property rights can be secured. 2018 20.28 24.1 21.2
2019 20.83 24.1 21.2
It should also be noted that some of the existing wells may be reaching the end of their useful 2020 21.38 26.2 23.3 New 1,500 gpm Well Constructed
lives towards the year 2025. Production from the wells should be monitored over time and 2021 21.93 26.2 23.3
redevelopment of existing wells may be necessary to maintain an adequate water supply. Of 2022 22.48 26.2 23.3
particular concern is the long-term viability of the existing Airport Well. The existing wellhole 2023 23.02 26.2 23.3
2024 23.57 28.4 25.5 New 1,500 gpm Well Constructed
and casing are not completely vertical and there is a significant offset in the casing. As a result 2025 24.12 28A 25.5
of this offset,the well shaft experiences accelerated wear and it is expected that the well pump 2026 24.67 28.4 25.5
will need replacement every four years. lBuildoutl 25.46 1 28.4 1 25.5
Page 5-9 Page 5-10
Section 5—Water Supply Sources
The use of surface water,either through a treatment plant or wells with filtration,requires that a
number of legal and environmental issues be investigated and addressed. Surface water should
be considered a long-term water supply option and may prove to be more cost-effective than new
wells as demand approaches buildout conditions. It is recommended that the use of surface
water be investigated further towards the goals of potentially supplying new demand in the
period of 2010 and beyond.
SECTION 6
WATER DEMAND
r MANAGEMENT MEASURES
1
4
I
{
E
Page 5-13
Section 6-Water Demand Management Measures Section 6-Water Demand Management Measures
DMM 5-Large Landscape Conservation Programs and Incentives The District does not purchase water from or sell water to any other agencies. This DMM is not
The District does not currently have a formal landscape conservation program. As noted above, applicable to the District.
the District does distribute sprinkler/rainfall measurement gauges free of charge.
DMM 11-Conservation Pricing
In addition, the District has worked with the community to develop a low-water use As discussed above,the District's current rate structure is a declining block rate. Also as noted
demonstration garden at the newly opened Tahoe Berry restaurant.The demonstration garden above,the District hired a consultant to conduct a Water Rate Study to investigate a revised rate
uses low-water using plant types as well as a drip irrigation system. The District has also structure for commercial accounts,as well as the implementation of meter reading and inctered
[ collaborated on the creation of a native species demonstration garden at Truckee High School. rates for residential service.
DMM 6-High-Efficiency Washing Machine Rebates DMM 12-Water Conservation Coordinator
The District currently offers a rebate of$50 for the purchase of high energy efficiency and water The District has a full-time employee with the title of Director of Planning. This individual is
conserving clothes washers. The District has developed a simple one page form to be completed responsible for implementing and promoting the District's conservation programs for both its
by the property owner,accompanied by a copy of the sales receipt. electric and water utilities. Mr.Scott Terrell has been serving in this position since 1992. About
15 percent of Mr.Terrell's time is spent on water conservation issues.
DMM 7-Public Information Program
The District provides public education and information programs on water conservation through DMM 13-Water Waste Prohibition
a number of means: The District's Codes and Policies contain a provision whereby the District may disconnect water
service to a customer that is found to be wasting water. Chapter 5.12.040 reads as follows:
Water Conservation Education/Handouts: The District has developed water
conservation information packets and brochures for community-wide distribution.Charts 5.12.040 Discontinuance of Water Service by the District
and handouts are also available that determine how much water is needed to water grasses 5.12.040.1 With notice-A customer's water service may be discontinued by the District upon at least
' Spring through Fall. five days'prior written notice in the event of-
5.12.040.1(A)Non-payment of bills for water service at any location within 30 days of presentation;
Print Advertising: The District has developed a print ad series on Water Wise 5.12.040.1(B) Violation of these codes;
Landscaping practices that is published in local newspapers(Sierra Sun,Moonshine Ink, 5.12.040.1(C)Negligent or wasteful use of water,as determined by the District.
etc).This advertising is performed in cooperation with local landscape companies. 5.12.040.1(D) ..
The District does not have any direct prohibitions on specific types of water usage and does not
TV Commercials: In the past,the District has produced television commercials asking have an ordinance banning water softeners. Hardness and TDS levels in the District's water
District customers to voluntarily use landscape water wisely. These commercials were supply are low and the District is not aware of any water softeners installed by customers.
aired on the local cable public access channel.
Bill Inserts: The District periodically includes water conservation reminders with monthly DMM 14-Residential Ultra-Low-Flush Toilet Replacement Program
{ service bills. The District also publishes asemi-annual newsletter that is mailed with a The District does not have a Residential Ultra-Low-Flush Toilet Replacement Program.
service bill. DMM 15-Plumbing Requirements for New Construction
DMM 8-School Education Program Requirements for new construction within the District's service area are governed by one of
The District funds the purchase of landscape water conservation educational materials that are three separate agencies.
distributed to local children through the Tahoe-Truckee Unified School District. Each year a Location Agency
presentation is made by District staff to sixth grade students regarding water conservation. Unincorporated Nevada County Nevada County Building Department
FDMM 9-Conservation Programs for Commercial,Industrial and Institutional Accounts Unincorporated Placer County Placer County Building Department
The District does not currently have a formal conservation program to address these customers. Town of Truckee Town of Truckee Building Department
The District, upon request, will perform a survey of subject properties and make
recommendations regarding water conservation measures. All three agencies have adopted the California Plumbing Code and the requirements given
therein apply to new construction. The District has not adopted any additional requirements
DMM 10-Wholesale Agency Programs regarding new construction.
Page 6-3 Page 6-4
SECTION 7 Section -Water Shortage Contingency Plan
WATER SHORTAGE CONTINGENCY PLAN
completed a Vulnerability Assessment that identified that number of customers that would be
Law impacted by major failure of a given facility. In conjunction with the Vulnerability Assessment,
10632. The plan shall provide an urban water shortage contingency analysis which includes each of the the District has been updating its fnergency Res ponse Plan which identifies actions to be taken
following elements which are within the authority of the urban water supplier: in the event of a major failure of a given facility.
(a) Stages of action to be undertaken by the urban water supplier in response to water supply WATER CONSERVATION PROGRAM
shortages,including up to a 50 percent reduction in water supply,and an outline of specific water Depending upon the type of failure,the location and the number of customers affected,it would
supply conditions which are applicable to each stage.
be necessary for the District to implement some form of water conservation-either voluntary or
p mandatory.(b) An estimate of the minimum water supply available during each of the next three water years man ry• Table 71 identifies th a various stages of water conservation measures that would be
based on the driest three year historic sequence for the agency's water supply. implemented.
(c) Actions to be undertaken by the urban water supplier to prepare for,and implement during,a Table 7-1. Water Conservation Stages
catastrophic interruption of water supplies including,but not limited to,a regional power outage, Stage I Water Conservation Requirement Compliance Level
an earthquake,or other disaster.
]0°�eduction in Usage Voluntary
(d) Additional,mandatory prohibitions against specific water use practices during water shortages, 317 30%eduction in Usage Mandatory
including,but not limited to,prohibiting the use of potable water for street cleaning. 3 50Seduction in Usa a Mandatory
(e) Consumption reduction methods in the most restrictive stages.£ch urban water supplier may use
any type of consumption reduction methods in its water shortage contingency analysis that would Stage I Water Conservation
reduce water use,are appropriate for its area,and have the ability to achieve a water use reduction
consistent with up to a 50 percent reduction in water supply. Stage 1 would apply during periods requiring a reduction of 10 percent in water usage. This
would be achieved through voluntary measures.All new water connections would be prohibited
(f) Penalties or charges for excessive use,where applicable. within the area affected. The withdrawal of water for construction purposes would also be
prohibited.
(g) An analysis of the impacts of each of the actions and conditions described in subdivisions(a)to
(0, inclusive,on the revenues and expenditures of the urban water supplier, and proposed e 2 Water Conservation
measures to overcome those impacts,such as the development of reserves and rate adjustments. Stage
I Stage 2 would apply during periods requiring a reduction of 30 percent in water usage. All
(h) A draft water shortage contingency resolution or ordinance. outdoor water usage would be prohibited. Penalties and fines would be imposed for violations of
the water conservation program.
(i) A mechanism for determining actual reductions in water use pursuant to the urban water shortage
contingency analysis.
Stage 3 Water Conservation
6 Stage 3 would apply during periods requiring a reduction of 50 percent in water usage. If
{ The effective management of water supply shortages is an important responsibility of water necessary,mandatory rationing and temporary outages would be implemented by the District.
jagencies.Shortages may be caused by failures of major water supply facilities,natural disasters, Penalties and fines would be imposed for violations of the water conservation program.
! or other adverse conditions. Therefore,it is necessary to have an effective management program
to mitigate water supply shortages. WATER CONSERVATION ORDINANCE
Attached in Appendix B is an ordinance adopting a water conservation program that was passed
As described in Section 5,by the Summer of 2005,the District should be using groundwater as by the District's Board of Directors as part of development of this Urban Water Management
its sole source of supply. The Martis Valley Groundwater Basin has a volume of about 484,000 Plan. This ordinance outlines three stages of water alerts that describe different required
acre-feet(AF). Based upon current withdrawals,there is over 20 years worth of water supply conservation savings. These conservation savings range from voluntary compliance with
available even if there was zero recharge of the groundwater basin. Consequently, the most reasonable conservation efforts in Stage 1 to a mandatory 50 percent reduction in Stage 3.
likely cause of a water supply shortage would be the failure of a major water supply facility such
j as a well, pump station or transmission pipeline. As a result, water supply shortages are This Ordinance also authorizes the General Manager of the District to implement these treasures
expected to be somewhat short in duration(days or possibly weeks),but may occur without any immediately upon occurrence of an event requiring such conservation measures. A public
warning. meeting of the Board of Directors would then be scheduled as soon a possible to inform the
Board and the public of the emergency, the actions taken by the District and the expected
The District's water system consists of five major components: control valve stations, duration until the problem can be corrected.
groundwater wells, pipelines, pump stations and storage tanks. In May 2004, the District
Page al Page Z
k
Section 8-Recycled Water Opportunities Section 8-Recycled Water Opportunities
CURRENT AND POTENTIAL USE OF RECYCLED WATER (iv) The provisions of this paragraph requiring the acquisition of water rights or the extraction and
As noted above all water treated at the TTSA plant is discharged into the upper groundwater discharge of groundwater to offset reductions in the amount or timing of return flow to the
aquifer,through which it eventually flows into the Truckee River. Currently,there is no usage of Truckee River shall also apply to entities other than TTSA that may treat and dispose of
recycled water for commercial, industrial or irrigation purposes within the District's service wastewater within the California portion of the Truckee River basin,but only if and to the
territory. extent that the treated wastewater is not returned to the Truckee River or its tributaries,as to
timing and amount,substantially as if the wastewater had been treated and disposed of by
TTSA in its existing place of disposal and by its existing method of disposal.The provisions
In November 1990,the Truckee-Carson-Pyramid Lake Water Rights Settlement Act,Title II of of this paragraph shall not apply to entities treating and disposing of the wastewater from less
Public Law 101-618[104 Stat.3289,3294]was signed into law by the US Government. Section than eight dwelling units.
204.c.I.G of that Act essentially prohibits the reduction in return flow of treated wastewater to
the Truckee River and thereby precludes opportunities for the use of recycled water. The text of
the Section is given below:
G) if the Tahoe-Truckee Sanitation Agency or its successor(hereafter'TTSA')changes in whole or in
part the place of disposal of its treated wastewater to a place outside the area between Martis Creek
and the Truckee River below elevation 5800 NGVD Datum,or changes the existing method of
disposing of its wastewater,which change in place or method of disposal reduces the amount or
substantially changes the timing of return flows to the Truckee River of the treated wastewater,
TTSA shall:
I
(i) acquire or arrange for the acquisition of preexisting water rights to divert and use water of the
Truckee River or its tributaries in California or Nevada and discontinue the diversion and use
of water at the preexisting point of diversion and place of use under such rights in a manner
legally sufficient to offset such reduction in the amount of return flow or change in timing,
and California's Truckee River basin gross diversion allocation shall continue to be charged
the amount of the discontinued diversion;or
(ii) in compliance with California law, extract and discharge into the Truckee River or its
tributaries an amount of Truckee River basin groundwater in California sufficient to offset
such reduction or change in timing,subject to the following conditions:
(a) extraction and discharge of Truckee River Basin groundwater for purposes of this
paragraph shall comply with the terms and conditions of subparagraphs 204(c)(1)(B)
and(D)and shall not be deemed use of Truckee River basin groundwater within the
State of Nevada within the meaning of subparagraph 204(c)(1)(D);and
(b) California's Truckee River basin gross diversion allocation shall be charged
immediately with the amount of groundwater discharged and, when California's
Truckee River Basin gross diversion allocation equals 22,000 acre-feet or when the
total of any reductions resulting from the changes in the place or method of disposal
exceed 1000 acre-feet,whichever occurs first,the California Truckee River basin gross
diversion allocation shall thereafter be charged with an additional amount of water
required to compensate for the return flows which would otherwise have accrued to the
Truckee River basin from municipal and industrial use of the discharged groundwater.
In no event shall the total of California's Truckee River gross diversions and extractions
exceed 32,000 acre-feet.
(iii) For purposes of this paragraph,the existing method of disposal shall include,in addition to
underground leach field disposal,surface spray or sprinkler infiltration of treated wastewater
on the site between Martis Creek and the Truckee River referred to in this subsection.
Page 8-2 Page 8-3
3
its water service sufficient to meet the needs of its various categories 10611.5. "Demand management"means those water conservation measures,
of customers during normal,dry,and multiple dry water years. programs,and incentives that prevent the waste of water and promote the reasonable
and efficient use and reuse of available supplies.
(5) Public health issues have been raised over a number of contaminants
that have been identified in certain local and imported water supplies. 10612. "Customer"means a purchaser of water from a water supplier who uses the
water for municipal purposes,including residential,commercial,governmental,and
(6) Implementing effective water management strategies,including industrial uses.
groundwater storage projects and recycled water projects,may require
i specific water quality and salinity targets for meeting groundwater 10613. "Efficient use"means those management measures that result in the most
basins water quality objectives and promoting beneficial use of effective use of water so as to prevent its waste or unreasonable use or unreasonable
recycled water. method of use.
(7) Water quality regulations are becoming an increasingly important 10614. "Person"means any individual,firm,association,organization,partnership,
factor in water agencies'selection of raw water sources,treatment business,trust,corporation,company,public agency,or any agency of such an entity.
alternatives,and modifications to existing treatment facilities.
10615. "Plan"means an urban water management plan prepared pursuant to this part.
(8) Changes in drinking water quality standards may also impact the A plan shall describe and evaluate sources of supply,reasonable and practical efficient
usefulness of water supplies and may ultimately impact supply uses,reclamation and demand management activities. The components of the plan
reliability. may vary according to an individual community or area's characteristics and its
capabilities to efficiently use and conserve water. The plan shall address measures for
(9) The quality of source supplies can have a significant impact on water residential,commercial,governmental,and industrial water demand management as
management strategies and supply reliability. set forth in Article 2(commencing with Section 10630)of Chapter 3. In addition,a
strategy and time schedule for implementation shall be included in the plan.
(b) This part is intended to provide assistance to water agencies in carrying
out their long-term resource planning responsibilities to ensure adequate water 10616. "Public agency"means any board,commission,county,city and county,city,
supplies to meet existing and future demands for water. regional agency,district,or other public entity.
I
10610.4. The Legislature finds and declares that it is the policy of the state as follows: 10616.5. "Recycled water'"means the reclamation and reuse of wastewater for
beneficial use.
(a) The management of urban water demands and efficient use of water shall
be actively pursued to protect both the people of the state and their water 10617. "Urban water supplier"means a supplier,either publicly or privately owned,
resources. providing water for municipal purposes either directly or indirectly to more than 3,000
customers or supplying more than 3,000 acre-feet of water annually. An urban water
(b) The management of urban water demands and efficient use of urban water supplier includes a supplier or contractor for water,regardless of the basis of right,
supplies shall be a guiding criterion in public decisions. which distributes or sells for ultimate resale to customers. This part applies only to
water supplied from public water systems subject to Chapter 4(commencing with
(c) Urban water suppliers shall be required to develop water management Section 116275)of Part 12 of Division 104 of the Health and Safety Code.
plans to actively pursue the efficient use of available supplies.
CHAPTER 3.URBAN WATER MANAGEMENT PLANS
CHAPTER 2.DEFINITIONS Article 1.General Provisions
10611. Unless the context otherwise requires,the definitions of this chapter govern the 10620.
i construction of this part. (a) Every urban water supplier shall prepare and adopt an urban water
management plan in the manner set forth in Article 3(commencing with
Section 10640).
t
California Urban Water Management Planning Act Page 2 California Urban Water Management Planning Act Page 3
August 1,2003 August 1,2003
(f) Provide a description of the supplier's water demand management
(4) A detailed description and analysis of the amount and location of measures. This description shall include all of the following:
groundwater that is projected to be pumped by the urban water
supplier. The description and analysis shall be based on information (1) A description of each water demand management measure that is
that is reasonably available,including,but not limited to,historic use currently being implemented,or scheduled for implementation,
records. including the steps necessary to implement any proposed measures,
including,but not limited to,all of the following:
(c) Describe the reliability of the water supply and vulnerability to seasonal or
climatic shortage,to the extent practicable,and provide data for each of the (A) Water survey programs for single-family residential and
following: multifamily residential customers.
(1) An average water year. (B) Residential plumbing retrofit.
(2) A single dry water year.
(3) Multiple dry water years. (C) System water audits,leak detection,and repair.
For any water source that may not be available at a consistent level of use, (D) Metering with commodity rates for all new connections and
given specific legal,environmental,water quality,or climatic factors, retrofit of existing connections.
describe plans to supplement or replace that source with alternative
sources or water demand management measures,to the extent (E) Large landscape conservation programs and incentives.
f practicable.
(F) High-efficiency washing machine rebate programs.
(d) Describe the opportunities for exchanges or transfers of water on a short-
term or long-term basis. (G) Public information programs.
(e) (H) School education programs.
€ (1) Quantify,to the extent records are available,past and current water
' use,over the same five-year increments described in subdivision(a), (1) Conservation programs for commercial,industrial,and
s and projected water use,identifying the uses among water use institutional accounts.
sectors including,but not necessarily limited to,all of the following
uses: (J) Wholesale agency programs.
(A) Single-family residential. (K) Conservation pricing.
(B) Multifamily.
(C) Commercial. (L) Water conservation coordinator.
(D) Industrial.
(E) Institutional and governmental. (M) Water waste prohibition.
(F) Landscape.
(G) Sales to other agencies. (N) Residential ultra-low-flush toilet replacement programs.
(H) Saline water intrusion barriers,groundwater recharge,or
conjunctive use,or any combination thereof. (2) A schedule of implementation for all water demand management
(1) Agricultural. measures proposed or described in the plan.
(2) The water use projections shall be in the same five-year increments (3) A description of the methods,if any,that the supplier will use to
described in subdivision(a). evaluate the effectiveness of water demand management measures
implemented or described under the plan.
California Urban Water Management Planning Act Page 6 California Urban Water Management Planning Act Page 7
August 1,2003 August 1,2003
but not limited to,a regional power outage,an earthquake,or other (d) The projected use of recycled water within the supplier's service area at the
disaster. end of 5,10,15,and 20 years,and a description of the actual use of
recycled water in comparison to uses previously projected pursuant to this
(d) Additional,mandatory prohibitions against specific water use practices subdivision.
during water shortages,including,but not limited to,prohibiting the use of
potable water for street cleaning. (e) A description of actions,including financial incentives,which may be taken
to encourage the use of recycled water,and the projected results of these
(e) Consumption reduction methods in the most restrictive stages. Each urban actions in terms of acre-feet of recycled water used per year.
water supplier may use any type of consumption reduction methods in its
water shortage contingency analysis that would reduce water use,are (f) A plan for optimizing the use of recycled water in the supplier's service
appropriate for its area,and have the ability to achieve a water use area,including actions to facilitate the installation of dual distribution
reduction consistent with up to a 50 percent reduction in water supply. systems,to promote recirculating uses,to facilitate the increased use of
treated wastewater that meets recycled water standards,and to overcome
(f) Penalties or charges for excessive use,where applicable. any obstacles to achieving that increased use.
(g) An analysis of the impacts of each of the actions and conditions described 10634. The plan shall include information,to the extent practicable,relating to the
in subdivisions(a)to(f),inclusive,on the revenues and expenditures of the quality of existing sources of water available to the supplier over the same five-year
urban water supplier,and proposed measures to overcome those impacts, increments as described in subdivision(a)of Section 10631,and the manner in which
such as the development of reserves and rate adjustments. water quality affects water management strategies and supply reliability.
(h) A draft water shortage contingency resolution or ordinance.
Article 2.5 Water Service Reliability
(i) A mechanism for determining actual reductions in water use pursuant to the
urban water shortage contingency analysis. 10635.
(a) Every urban water supplier shall include,as part of its urban water
10633. The plan shall provide,to the extent available,information on recycled water management plan,an assessment of the reliability of its water service to its
and its potential for use as a water source in the service area of the urban water customers during normal,dry,and multiple dry water years. This water
supplier. The preparation of the plan shall be coordinated with local water,wastewater, supply and demand assessment shall compare the total water supply
groundwater,and planning agencies that operate within the supplier's service area,and sources available to the water supplier with the total projected water use
E shall include all of the following: over the next 20 years,in five-year increments,for a normal water year,a
single dry water year,and multiple dry water years. The water service
(a) A description of the wastewater collection and treatment systems in the reliability assessment shall be based upon the information compiled
supplier's service area,including a quantification of the amount of pursuant to Section 10631,including available data from state,regional,or
wastewater collected and treated and the methods of wastewater disposal. local agency population projections within the service area of the urban
water supplier.
(b) A description of the recycled water currently being used in the supplier's
service area,including,but not limited to,the type,place,and quantity of (b) The urban water supplier shall provide that portion of its urban water
use. management plan prepared pursuant to this article to any city or county
within which it provides water supplies no later than 60 days after the
(c) A description and quantification of the potential uses of recycled water, submission of its urban water management plan.
including,but not limited to,agricultural irrigation,landscape irrigation,
wildlife habitat enhancement,wetlands,industrial reuse,groundwater (c) Nothing in this article is intended to create a right or entitlement to water
recharge,and other appropriate uses,and a determination with regard to service or any specific level of water service.
the technical and economic feasibility of serving those uses.
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California Urban Water Management Planning Act Page 10 California Urban Water Management Planning Act Page 11
August 1,2003 August 1,2003
or regulations after the effective date of this part,and which substantially meets the
requirements of this part,or by any existing urban water management plan which
includes the contents of a plan required under this part.
{
10654. An urban water supplier may recover in its rates the costs incurred in preparing
its plan and implementing the reasonable water conservation measures included in the
plan. Any best water management practice that is included in the plan that is identified
in the"Memorandum of Understanding Regarding Urban Water Conservation in
California"is deemed to be reasonable for the purposes of this section.
10655. If any provision of this part or the application thereof to any person or
circumstances is held invalid,that invalidity shall not affect other provisions or
applications of this part which can be given effect without the invalid provision or APPENDIX B
application thereof,and to this end the provisions of this part are severable.
10656. An urban water supplier that does not prepare,adopt,and submit its urban
water management plan to the department in accordance with this part,is ineligible to
receive funding pursuant to Division 24(commencing with Section 78500)or Division 26 ORDINANCE NO 2005-05
(commencing with Section 79000),or receive drought assistance from the state until the
urban water management plan is submitted pursuant to this article.
10657. FINDING THE NECESSITY FOR
(a) The department shall take into consideration whether the urban water AND ADOPTING A WATER
supplier has submitted an updated urban water management plan that is
consistent with Section 10631,as amended by the act that adds this
section,in determining whether the urban water supplier is eligible for funds CONSERVATION PROGRAM IN
made available pursuant to any program administered by the department.
(b) This section shall remain in effect only until January 1,2006,and as of that THE EVENT OF A WATER
date is repealed,unless a later enacted statute,that is enacted before
January 1,2006,deletes or extends that date. SUPPLY EMERGENCY
3
California Urban Water Management Planning Act Page 14
August 1,2003
(c) Announcements in local media such as newspapers,radio and television C. If such place or residence,business or other address cannot be ascertained,or
a person of suitable age or discretion at any such place cannot be found,then
(d) Any other methods deemed appropriate by the General Manager by affixing a copy in a conspicuous place on the property where the failure to
comply is occurring and also be delivering a copy to a person of suitable age
The stage designated shall become effective immediately upon announcement. The and discretion there residing,or employed,if such person can be found,and
also sending a copy through the mail,first class,registered postage
declaration of any stage shall be reported to the Board as soon as practicable and convene a prepaid,addressed to the customer U.S..the place where the property is situated
special meeting as soon as possible.The Board shall thereupon ratify the declaration,
rescind the declaration,or direct the declaration of a different stage. as well as such other address provided by the customer for bills for water or
electric service if such can be ascertained.
& Penalties and Fines. It shall be unlawful for any customer of the District to fail to comply with 3. Said notice shall contain,in addition to the facts of the violation,a statement of the
any of the provisions of this ordinance. Failure to comply with any of the provisions of this
Ordinance shall be as follows: possible penalties for each violation and statement informing the customer of his
right to a hearing on the violation.
(a) For the first violation by any customer of any of the provisions of this Ordinance,the District shall verbally notice the fact of such violation. (e) Appeals.Any customer against whom a penalty is levied pursuant to this section shallhave
a right to an appeal,in the first instance to the General Manager with the right of appeal to
(b) For a second violation by any customer of any of the provisions of this Ordinance,the District the District's Board of Directors,on the merits of the alleged violation,upon written request of
shall issue a personal notice of the fact of such violation to the customer. that customer to the District within fifteen days of the date of notification of the violation.
c For a third violation b a customer of an PASSED AND ADOPTED by the Board of Directors at a meeting duly called and held within the
( ) y y provision of this ordinance,the District may it has District on the second day of November 2005 by the following roll call vote:
an appropriate flow restricting device upon a prior determination that the customer has
repeatedly violated the provisions of this Ordinance and that such action is reasonably AYES:Directors Aguera,Hemig,Sutton,Taylor and Thomason
necessary to assure compliance with this ordinance.Such action shall be taken only after a
hearing held by the General Manager,where the customer has an opportunity to respond to NOES:None
the Districts information or evidence that the customer has repeatedly violated the provisions
of this Ordinance.As determined by the General Manager,any such restricted service may ABSTAIN:None
be restored upon application of the customer made not less than forty-eight(48)hours after
the implementation of the action restricting service and only upon a showing by the customer ABSENT:None
that the customer is ready,willing and able to comply with the provisions of this Ordinance.
l Prior to any restoration of service, the customer shall pay all District charges for any TRUCKEE DON R PUBLIC UTILITY DISTRICT
( restriction of service and its restoration as provided for in the Districts rules goveming water
service.Any willful tampering with or removal of any flow restriction device shall result in
termination of service for a period to be determined by the General Manager. By VtA
J. ig,President of the Board
(d) Notice.The District shall give notice of each violation to the customer committing such ATTEST
violation as follows: .�/j '
1, For any violation of the provisions of this Ordinance,the District may give written Peter L.Holzmeister,Clerk of the Board
notice of the fact of such violation to the customer personally or by U.S.mail,first
class,registered postage paid.
2. If the penalty assessed is,or includes,the installation of a flow resWctor to the FORNOW WW*AD ODWCT
customer,notice of the violation shall be given in the following manner.
a. By giving written notice thereof to the customer personally;or AND 1°a1�tM1 1 *Jo*`
�t31lIft7ALEo
b. If the customer be absent from or unavailable at either his place of residence or
his assumed place of business,by leaving a copy with some person of suitable
age and discretion at either place,and sending a copy through the U.S.mail,
first class,registered postage prepaid,addressed to the customer at his place
of business,residence,or such other address provided by the customer for bills
for water or electric service if such can be ascertained;or
3 Ordinance 2005-05 4 Ordinance 2005-05
y TRUCKEE DONNER� I
pr
Resolution No. 2005 - 31
ADOPTION OF THE URBAN WATER MANAGEMENT
PLAN
WHEREAS,the California Legislature enacted Assembly Bill 797(Water Code Section 10610 et seq.,
known as the Urban Water Management Planning Act)during the 1983-1984 Regular Session,and as
amended subsequently,which mandates that every supplier providing water for municipal purposes to
more than 3,000 customers or supplying more than 3,000 acre feet of water annually,prepare an Urban
APPENDIX C Water Management Plan,the primary objective of which is to plan for the conservation and efficient use
of water,and
WHEREAS,the District is an urban supplier of water providing water to over 3,000 customers;and
RESOLUTION 2005-31 WHEREAS,the Plan shall be periodically reviewed at least once every five years,and that the Truckee
Donner Public Utility District shall make any amendments or changes to its plan which are indicated by
Me review;and
ADOPTION OF THE URBAN
WHEREAS,the District has therefore,prepared and circulated for public review a draft Urban Water
Management Plan,and a property noticed public hearing regarding said Plan was held by the Truckee
WATERMANAGEMENT PLAN Donner Public Utility District on October 5,2005 and continued on November 2,2005;and
WHEREAS,the Plan must be adopted by December 31,2005 after the public review and hearing,and
filed with the California Department of Water Resources within thirty days of adoption;and
NOW,THEREFORE,BE IT RESOLVED by the Board of Directors of the Truckee Donner Public Utility
District as follows:
1. That the above recitations are true and correct.
2. That the 2005 Urban Water Management Plan is adopted.
PASSED AND ADOPTED by the Board of Directors at a meeting duly called and held within the District
on the second day of November,2005 by the following roll call vote:
i
AYES:Directors,Aguera,Hemig,Sutton Taylor and Thomason
NOES:None
ABSENT:None
TRU E DO R PUBLIC U LITY DISTRICT
T5WHernig,Ptesident L 1,BARBARA H.CAHILL,HEREBY CERTIFY THAT TF-
ATTEST: FOREGOING IS A TRUE AND CORRECT COPY OF
AND FURTHER CERTIFY THAT SUCH DOCUMENT
r ,.. HAS NOT BEEN A EWED OR REPEALED.
Peter L.Holzmeiste District Clerk
4
9
TRUCKEE DONNER
4. The following stages shall take effect upon declaration as herein provided:
(a)Stage 1—10%Reduction in Water Usage-Voluntary Compliance: Stage 1 applies during
Ordinance No. 2005 - 05 periods that the District determines that water usage should be reduced approximately 10%in
order to meet all of the water demands of its customers.Speck mandated restrictions in
water use for Stage 1 are as follows:
FINDING THE NECESSITY FOR AND ADOPTING 1. All new water connections shall be prohibited in the area affected by the water
A WATER CONSERVATION PROGRAM IN THE EVENT OF conservation requirement.
A WATER SUPPLY EMERGENCY
(b)Stage 2—30%Reduction in Water Usage-Mandatory Compliance: Stage 2 applies during
periods that the District determines that water usage should be reduced approximately 30%in
order to meet all of the water demands of its customers. Specific additional mandated
WHEREAS,California Water Code Sections 375 at.seq.permit public entities which supply water at restrictions in water use for Stage 2 are as follows:
retail to adopt and enforce a water conservation program to reduce the quantity of water used by the
1. All outdoor water uses are prohibited. The District may discontinue service to irrigation
people therein for the purpose of conserving the water supplies of such public entity;
services.
WHEREAS,California Water Code Section 10632 requires an urban water supplier to describe stages of action to be undertaken in the event of a water supply shortage; 2. The withdrawal of water for construction purposes shall be prohibited in the area affected
`
i
WHEREAS,the Board of Directors of the Truckee Donner Public Utility District has determined that it by the water conservation requirement.
i is necessary to establish a water conservation program in the event of any future water supply 3. Customers may be subject to fines and penalties for failure to comply with this requirement.
shortage; 4. The District may install flow restricting devices on a customers service.
t WHEREAS,the Board finds and determines that a water shortage could exist in the event of major
failure of one or more components of the water system; (c) Stage 3—50%Reduction in Water Usage-Mandatory Compliance: Stage 3 applies during
periods that the District determines that water usage should be reduced approximately 50%in
WHEREAS,the Board also finds and determines that the water sources available be put to maximum order to meet all of the water demands of its customers. Specific additional mandated
beneficial use to the extent to which they are capable,and that the waste or unreasonable use,or restrictions in water use for Stage 3 are as follows:
unreasonable method of use,of water be prevented and that the conservation of such water be 1. Customers shall be required to re
encouraged with a view to the maximum reasonable and beneficial use thereof in the interest of the q pair any known leaks on piping owned by the customer.
people of the District and for the public welfare. In the event that such leaks are not repaired in a timely manner,the District may perform
the repair or hire a contractor to perform the repair,and then invoice the customer for those
NOW THEREFORE BE IT RESOLVED by the Board of Directors of the District as follows: costs.
1. The General Manager is hereby authorized and directed to implement the provisions of this 2. The District may implement mandatory water rationing through the use of forced rolling
ordinance.Additionally,the General Manager is hereby authorized to make minor and limited outages.
exceptions to prevent undue hardship or unreasonable restrictions,provided that water shall not 5. Implementation of Conservation Stages.The District shall monitor the projected supply and
be wasted or used unreasonably and the purpose of this ordinance can be accomplished. demand for water by its customers on a daily basis.In the event of an emergency,the General
2. The provisions of this Ordinance shall apply to all water served to persons,customers,and Manager shall determine the extent of the conservation required through the implementation
property by the District.The District shall declare which portions of the service area are subject and/or termination of particular conservation stages in order for the District to prudently plan for
to a water supply emergency and the requirements of this ordinance. and supply water to its customers.Thereafter, the General Manager may order that the
appropriate stage of water conservation be implemented or terminated in accordance with the
f 3. Water Conservation Stages:No person shall knowingly use water or permit the use of water applicable provision of this Ordinance. Water system customers shall be notified of water
supplied by the District for commercial,industrial,agricultural,governmental,or any other conservation stages by one or more of the following methods:
purpose in a manner contrary to any provision of this ordinance,in an amount in excess of the
amounts authorized by this ordinance ordurin g an periods of time (a) Doorhanger notices delivered to the property served
y period of time other than the
specified in this ordinance.At no time shall water be wasted or used unreasonably.
(b) Mass mailing to customers and property owners
1 Ordinance 2005-05 2 Ordinance 2005-05
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(d) Nothing in this article is intended to change existing law concerning an also prepare reports and provide data for any legislative hearings designed
urban water supplier's obligation to provide water service to its existing to consider the effectiveness of plans submitted pursuant to this part.
customers or to any potential future customers.
10645. Not later than 30 days after filing a copy of its plan with the department,the
urban water supplier and the department shall make the plan available for public review
Articl 3.Adoption and Implementation of Plans during normal business hours.
10640. Every urban water supplier required to prepare a plan pursuant to this part shall
prepare its plan pursuant to Article 2(commencing with Section 10630). CHAPTER 4.MISCELLANEOUS PROVISIONS
The supplier shall likewise periodically review the plan as required by Section 10621, 10650. Any actions or proceedings to attack,review,set aside,void,or annul the acts
and any amendments or changes required as a result of that review shall be adopted or decisions of an urban water supplier on the grounds of noncompliance with this part
pursuant to this article. shall be commenced as follows:
10641. An urban water supplier required to prepare a plan may consult with,and obtain (a) An action or proceeding alleging failure to adopt a plan shall be commenced
comments from,any public agency or state agency or any person who has special within 18 months after that adoption is required by this part.
expertise with respect to water demand management methods and techniques.
(b) Any action or proceeding alleging that a plan,or action taken pursuant to
10642. Each urban water supplier shall encourage the active involvement of diverse the plan,does not comply with this part shall be commenced within 90 days
social,cultural,and economic elements of the population within the service area prior to after filing of the plan or amendment thereto pursuant to Section 10644 or
and during the preparation of the plan. Prior to adopting a plan,the urban water the taking of that action.
supplier shall make the plan available for public inspection and shall hold a public
hearing thereon. Prior to the hearing,notice of the time and place of hearing shall be 10651. In any action or proceeding to attack,review,set aside,void,or annul a plan,or
published within the jurisdiction of the publicly owned water supplier pursuant to Section an action taken pursuant to the plan by an urban water supplier on the grounds of
6066 of the Government Code. The urban water supplier shall provide notice of the noncompliance with this part,the inquiry shall extend only to whether there was a
l time and place of hearing to any city or county within which the supplier provides water prejudicial abuse of discretion. Abuse of discretion is established if the supplier has not
supplies.A privately owned water supplier shall provide an equivalent notice within its proceeded in a manner required by law or if the action by the water supplier is not
E service area. After the hearing,the plan shall be adopted as prepared or as modified supported by substantial evidence.
after the hearing.
10652. The California Environmental Quality Act(Division 13(commencing with
10643. An urban water supplier shall implement its plan adopted pursuant to this Section 21000)of the Public Resources Code)does not apply to the preparation and
chapter in accordance with the schedule set forth in its plan. adoption of plans pursuant to this part or to the implementation of actions taken
pursuant to Section 10632. Nothing in this part shall be interpreted as exempting from
10644. the California Environmental Quality Act any project that would significantly affect water
(a) An urban water supplier shall file with the department and any city or county supplies for fish and wildlife,or any project for implementation of the plan,other than
within which the supplier provides water supplies a copy of its plan no later projects implementing Section 10632,or any project for expanded or additional water
than 30 days after adoption. Copies of amendments or changes to the supplies.
plans shall be filed with the department and any city or county within which
the supplier provides water supplies within 30 days after adoption. 10653. The adoption of a plan shall satisfy any requirements of state law,regulation,or
order,including those of the State Water Resources Control Board and the Public
(b) The department shall prepare and submit to the Legislature,on or before Utilities Commission,for the preparation of water management plans or conservation
December 31,in the years ending in six and one,a report summarizing the plans;provided,that if the State Water Resources Control Board or the Public Utilities
t status of the plans adopted pursuant to this part.The report prepared by the Commission requires additional information concerning water conservation to
department shall identify the outstanding elements of the individual plans. implement its existing authority,nothing in this part shall be deemed to limit the board or
The department shall provide a copy of the report to each urban water the commission in obtaining that information. The requirements of this part shall be
supplier that has filed its plan with the department. The department shall satisfied by any urban water demand management plan prepared to meet federal laws
California Urban Water Management Planning Act Page 12 California Urban Water Management Planning Act Page 13
August 1,2003 August 1,2003
G
}
(4) An estimate,if available,of existing conservation savings on water use in accordance with the"Memorandum of Understanding Regarding
within the supplier's service area,and the effect of the savings on the Urban Water Conservation in California,"dated September 1991,may
supplier's ability to further reduce demand. submit the annual reports identifying water demand management
measures currently being implemented,or scheduled for
(g) An evaluation of each water demand management measure listed in implementation,to satisfy the requirements of subdivisions(f)and(g).
paragraph(1)of subdivision(f)that is not currently being implemented or
scheduled for implementation. In the course of the evaluation,first (k) Urban water suppliers that rely upon a wholesale agency for a
consideration shall be given to water demand management measures,or source of water,shall provide the wholesale agency with water use
combination of measures,that offer lower incremental costs than expanded projections from that agency for that source of water in five-year
or additional water supplies. This evaluation shall do all of the following: increments to 20 years or as far as data is available.The wholesale
agency shall provide information to the urban water supplier for
(1) Take into account economic and noneconomic factors,including inclusion in the urban water supplier's plan that identifies and quantifies,
environmental,social,health,customer impact,and technological to the extent practicable,the existing and planned sources of water as
factors. required by subdivision(b),available from the wholesale agency to the
urban water supplier over the same five-year increments,and during
(2) Include a cost-benefit analysis,identifying total benefits and total various water-year types in accordance with subdivision(c).An urban
costs. water supplier may rely upon water supply information provided by the
wholesale agency in fulfilling the plan informational requirements of
(3) Include a description of funding available to implement any planned subdivisions(b)and(c),including,but not limited to,ocean water,brackish
water supply project that would provide water at a higher unit cost. water,and groundwater,as a long-term supply.
(4) Include a description of the water supplier's legal authority to 10631.5. The department shall take into consideration whether the urban water supplier
implement the measure and efforts to work with other relevant is implementing or scheduled for implementation,the water demand management
f agencies to ensure the implementation of the measure and to share activities that the urban water supplier identified in its urban water management plan,
the cost of implementation. pursuant to Section 10631,in evaluating applications for grants and loans made
available pursuant to Section 79163.The urban water supplier may submit to the
(h) Include a description of all water supply projects and water supply department copies of its annual reports and other relevant documents to assist the
programs that may be undertaken by the urban water supplier to meet the department in determining whether the urban water supplier is implementing or
j total projected water use as established pursuant to subdivision(a)of scheduling the implementation of water demand management activities.
Section 10635. The urban water supplier shall include a detailed
description of expected future projects and programs,other than the 10632. The plan shall provide an urban water shortage contingency analysis which
demand management programs identified pursuant to paragraph(1)of includes each of the following elements which are within the authority of the urban water
subdivision(f),that the urban water supplier may implement to increase the supplier:
amount of the water supply available to the urban water supplier in
average,single-dry,and multiple-dry water years. The description shall (a) Stages of action to be undertaken by the urban water supplier in response
identify specific projects and include a description of the increase in water to water supply shortages,including up to a 50 percent reduction in water
supply that is expected to be available from each project. The description supply,and an outline of specific water supply conditions which are
shall include an estimate with regard to the implementation timeline for applicable to each stage.
each project or program.
(b) An estimate of the minimum water supply available during each of the next
(i) Describe the opportunities for development of desalinated water, three water years based on the driest three-year historic sequence for the
including,but not limited to,ocean water,brackish water,and agency's water supply.
groundwater,as a long-term supply.
(c) Actions to be undertaken by the urban water supplier to prepare for,and
Q) Urban water suppliers that are members of the California Urban implement during,a catastrophic interruption of water supplies including,
Water Conservation Council and submit annual reports to that council
California Urban Water Management Planning Act Page 8 California Urban Water Management Planning Act Page 9
August 1,2003 August 1,2003
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10630. It is the intention of the Legislature,in enacting this part,to permit levels of
(b) Every person that becomes an urban water supplier shall adopt an urban water management planning commensurate with the numbers of customers served and
water management plan within one year after it has become an urban water the volume of water supplied.
supplier.
10631. A plan shall be adopted in accordance with this chapter and shall do all of the
(c) An urban water supplier indirectly providing water shall not include planning following:
elements in its water management plan as provided in Article 2
(commencing with Section 10630)that would be applicable to urban water (a) Describe the service area of the supplier,including current and projected
suppliers or public agencies directly providing water,or to their customers, population,climate,and other demographic factors affecting the supplier's
without the consent of those suppliers or public agencies. water management planning. The projected population estimates shall be
based upon data from the state,regional,or local service agency population
(d) projections within the service area of the urban water supplier and shall be
(1) An urban water supplier may satisfy the requirements of this part by in five-year increments to 20 years or as far as data is available.
participation in areawide,regional,watershed,or basinwide urban
water management planning where those plans will reduce preparation (b) Identify and quantify,to the extent practicable,the existing and planned
costs and contribute to the achievement of conservation and efficient sources of water available to the supplier over the same five-year
water use. increments described in subdivision(a). If groundwater is identified as an
existing or planned source of water available to the supplier,all of the
P (2) Each urban water supplier shall coordinate the preparation of its plan following information shall be included in the plan:
with other appropriate agencies in the area,including other water
suppliers that share a common source,water management agencies, (1) A copy of any groundwater management plan adopted by the urban
t and relevant public agencies,to the extent practicable. water supplier,including plans adopted pursuant to Part 2.75
(commencing with Section 10750),or any other specific authorization
(e) The urban water supplier may prepare the plan with its own staff,by for groundwater management.
contract,or in cooperation with other governmental agencies.
(2) A description of any groundwater basin or basins from which the
(f) An urban water supplier shall describe in the plan water management tools urban water supplier pumps groundwater. For those basins for which
and options used by that entity that will maximize resources and minimize a court or the board has adjudicated the rights to pump groundwater,
the need to import water from other regions. a copy of the order or decree adopted by the court or the board and a
description of the amount of groundwater the urban water supplier has
10621. the legal right to pump under the order or decree.
(a) Each urban water supplier shall update its plan at least once every five
years on or before December 31,in years ending in five and zero. For basins that have not been adjudicated,information as to whether
the department has identified the basin or basins as overdrafted or
(b) Every urban water supplier required to prepare a plan pursuant to this part has projected that the basin will become overdrafted if present
shall notify any city or county within which the supplier provides water management conditions continue,in the most current official
supplies that the urban water supplier will be reviewing the plan and departmental bulletin that characterizes the condition of the
considering amendments or changes to the plan. The urban water supplier groundwater basin,and a detailed description of the efforts being
may consult with,and obtain comments from,any city or county that undertaken by the urban water supplier to eliminate the long-term
receives notice pursuant to this subdivision. overdraft condition.
(c) The amendments to,or changes in,the plan shall be adopted and filed in (3) A detailed description and analysis of the location,amount,and
the manner set forth in Article 3(commencing with Section 10640). sufficiency of groundwater pumped by the urban water supplier for the
past five years. The description and analysis shall be based on
information that is reasonably available,including,but not limited to,
Article 2.Contents of Plans historic use records.
California Urban Water Management Planning Act Page 4 California Urban Water Management Planning Act Page 5
August 1,2003 August 1,2003
Established:AB 797,Klchs,1983
Amended:AB 2661,Klehs,1990
AB 11X,Filante,1991
AB 1869,Speier,1991
AB 892,Frazee,1993
SB 1017,McCorquodale,1994
AB 2853,Cortese,1994
AB 1845,Cortese,1995
SB 1011,Polanco,1995
AB 2552,Bates,2000
SB 553,Kelley,2000
SB 610,Costa,2001
APPENDIX A AB 901,Da ,2001
SB 672,Machado,2001
SB 1348,Brulte,2002
SB 1384,Costa,2002
E SB 1518,Torlakson,2002
TEXT OF THE URBAN WATER AB 105,Wiggins, 004
SB 318,Alpert,2004
MANAGEMENT PLANNING ACT CALIFORNIA WATER CODE DIVISION 6
PART 2.6.URBAN WATER MANAGEMENT PLANNING
t CHAPTER 1. GENERAL DECLARATION AND POLICY
E
10610. This part shall be known and may be cited as the"Urban Water Management
Planning Act."
10610.2. (a) The Legislature finds and declares all of the following:
(1) The waters of the state are a limited and renewable resource subject to
ever-increasing demands.
(2) The conservation and efficient use of urban water supplies are of
statewide concern;however,the planning for that use and the
implementation of those plans can best be accomplished at the local
level.
(3) A long-term,reliable supply of water is essential to protect the
i productivity of California's businesses and economic climate.
i
(4) As part of its long-range planning activities,every urban water supplier
should make every effort to ensure the appropriate level of reliability in
California Urban Water Management Planning Act Page 1
August 1,2003
SECTION 8
RECYCLED WATER OPPORTUNITIES
Law
10633. The plan shall provide,to the extent available,information on recycled water and its potential for use
as a water source in the service area of the urban water supplier.To the extent practicable, the
preparation of the plan shall be coordinated with local water,wastewater,groundwater,and planning
agencies and shall include all of the following:
10633.(a) A description of the wastewater collection and treatment systems in the suppliers service area,
including a quantification of the amount of wastewater collected and treated and the methods of
wastewater disposal.
10633.(b) A description of the recycled water currently being used in the supplier's service area,including but not
limited to,the type,place and quantity of use.
10633.(c) A description and quantification of the potential uses of recycled water,including,but not limited to,
SECTIONS agricultural irrigation,landscape irrigation,wildlife habitat enhancement,wetlands,industrial reuse,
groundwater recharge,and other appropriate uses,and a determination with regard to the technical and
economic feasibility of serving those uses.
10633.(d) The projected use of recycled water within the supplier's service area at the end of 5,10,15,and 20
years.
.RECYCLED WATER
The District does not provide either wastewater collection or wastewater treatment to customers
OPPORTUNITIES within its service area. The great majority of the District's water customers are served by the
Truckee Sanitary District(TSD). TSD operates and maintains the wastewater collection system
that collects wastewater and conveys it to the Tahoe-Truckee Sanitation Agency's (TTSA)
regional Water Reclamation Plant.
There are some areas that are not served by centralized wastewater collection and treatment.
Water customers in the Prosser Heights, Prosser Lakeview, Ponderosa Palisades and
Martiswoods areas are all served by individual septic tank and leachfield systems. TSD has been
expanding its collection system into the Sierra Meadows subdivision
WASTEWATER QUANTITIES AND TREATMENT
Currently,all wastewater collected by the Truckee Sanitary District is conveyed to the TTSA
Water Reclamation Plant for treatment. The plant has a current capacity of 4.83 mgd and treats
wastewater from the entire north Lake Tahoe area within the state of California. About 2 million
gallons per day of wastewater is conveyed by TSD to the treatment plant. No data is available to
quantify the amount of wastewater treated by individual septic tank and leachfield systems
The treatment process involves full tertiary treatment including phosphorus and ammonia
removal. Treated effluent is discharged into the uppermost layer of the groundwater aquifer
using surface spray irrigation and subsurface percolation. Most of this water discharges from the
aquifer into the Truckee River,contributing about 6 feet per second to the flow of the river.
Sludge generated by the wastewater treatment process is conveyed to the Lockwood Regional
Landfill for disposal.
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Section 6—Water Demand Management Measures
WATER CONSERVATION DMM EFFECTIVENESS
As described previously, meters arc not read for residential services and not all residential
services arc equipped with meters. In addition,the demographics of the District's customer base
are not fully understood(percentage of part-time vs.full-time residents)and appear to be in a
period of transition based upon anecdotal evidence. Consequently,sufficient tools do not exist to
monitor DMM effectiveness at this time.
DMM IMPLEMENTATION COSTS
The District estimates the ongoing cost of the current DMMs at approximately$31,000 per year,
not counting Mr. Terrell's salary. The cost of implementing DMMs 4 and 11 is being
investigated as part of the Water Rate Study currently under way.
FUTURE DMM EFFORTS SECTION 7
The Town of Truckee has recently expressed an interest in promoting additional water
conservation efforts. The District and the Town have agreed to work together to identify
opportunities to expand and promote the District's current water conservation efforts.
WATER SHORTAGE
CONTINGENCY PLAN
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SECTION 6 Section 6—Water Demand Management Measures
WATER DEMAND MANAGEMENT MEASURES
Considering these two issues,it is not possible to conduct system-wide or even area-specific
1 Law water audits. As metering and monitor devices are installed at central facilities,the District will
10631.(f) Provide a description of the supplier's water demand management measures.This description shall
begin conducting system level water audits.
t include all of the following:
DMM 4 - Metering with Commodity Rates for all New Connections and Retrofit of
(1) A description of each water demand management measure that is currently being implemented,or Existing Connections
scheduled for implementation,including the steps necessary to implement any proposed measures, Currently, water meters are installed on all commercial services and residential services
including,but not limited to,all of the following: ... constructed since 1992. Water meters have not been installed on residential services that were
constructed before 1992. The District reads meters on commercial services and bills are based
Demand management,or water conservation,is frequently the lowest-cost resource available to a
water agency. The goals of the District's water conservation program are to reduce demand for upon usage. Residential customers are charged a flat rate for service and residential meters are
water at peak times,demonstrate continued commitment to appropriate demand management not read. Current commercial water rates have a declining block rate structure.
measures(DMMs)and to ensure a reliable future water supply. The Urban Water Planning Act
requires that an Urban Water Management Plan discuss 14 specific DMMs. There is one In 2004,AB 2572 was passed by the California Legislature and signed by the Governor. The
additional measure(DMM 15)that has been implemented. section of this law that applies to the District reads:
DEMAND MANAGEMENT MEASURES Article 3.5.Metered Service
SEC.5.Section 527 is added to the Water Code,to read:
DMM 1 — Water Survey Programs for Single-family and Multi-family Residential 527. (a)An urban water supplier that is not subject to Section 526 shall do both the
F Customers following:
(1) install water meters on all municipal and industrial service connections
The District does not currently have a formal water survey program. During prior years,the
District has performed surveys on several multi-family units upon request of the property owner. located within its service area on or before January 1,2025.
t (2) (A) Charge each customer that has a service connection for which a water
meter has been installed,based on the actual volume of deliveries,as
} DMM 2—Residential Plumbing Retrofit measured by the water meter,beginning on or before January 1,2010.
Upon request, the District provides to its customers, at no charge, the following water (B) Notwithstanding subparagraph (A), in order to provide customers
conservation devices: with experience in volume-based water service charges, an urban
water supplier that is subject to this subdivision may delay,for one
• low-flow showerhead annual seasonal cycle of water use,the use of meter-based charges for
w • faucet aerators service connections that are being converted from nonvolume-based
• Sprinkler/rainfall measurement gauges. billing to volume-based billing.
(b)A water purveyor,including an urban water supplier,may recover the cost of
The District is approaching other agencies to see if they may be willing to partner with the providing services related to the purchase,installation,and operation of a water
District in this effort. There is no formal mandate from either the District or the local meter from rates,fees,or charges.
governments that customer's install such water saving devices.
In late 2004, the District hired a consultant to conduct a Water Rate Study. This study will
DMM 3—Water System Audits,Leak Detection and Leak Repair investigate a revised rate structure for commercial accounts,as well as the implementation of
The District has an active leak repair program.Any reported or suspected leaks are verified by meter reading and metered rates for residential service. An interim report was submitted to the
testing the water for chlorine residual. The leak is then excavated,and repaired. During the District in the Summer of 2005.
Summer months,the District has a crew that spends about 90 percent of its time repairing leaks.
The District also owns listening devices that are used to locate leaks that are not visible from the For 2006,the District has budgeted funds to conduct a pilot study that will read meters on about
surface. 1,200 residential accounts. These residential customers will continue to be billed a flat rate for
service. This pilot study will gather data regarding actual residential water usage that will then
Currently,the District's water system does not have sufficient meters and monitoring devices on be used as part of the Water Rate Study to develop possible metered rate structures for residential
all of its wells, pump stations and control valve stations. This issue was identified in the customers. Once completed,this Water Rate Study should provide sufficient information to the
District's 2004 Water System Master Plan Update and installation of meters is included in the District's Board of Directors to consider the issue of metering and rates.
District's ongoing Capital Improvement Program. In addition,the demographics of the District's
customer base are not fully understood (percentage of part-time vs. full-time residents).
Page 6-1 Page 6-2
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Figure 5-2. Projected Potable Water Demand vs.Proposed Production Capacity,1990-2025
30.0
-r-Historic Average Day Demand
—Future Average Day Demand Projection
-•a-Historic Maximum Day Demand
Future Maximum Day Production a
Y Pdt Projection r
Total Production Capacity
.'rm Production Capacity \ i
Firm j wtE T
e ,
l
/
.: .�
20.0 f �S
___.___-- ___. __. - __-___.._ -.__._- -.,-. - � "" -------__----
l
q i JJ
p � .... ..,.::...::.tN`�,'� '. '� .. ` i Y,•. �, S�'y s^�� a�� f.�" C E }�� �t;l.
s
15.0 10.0
r
5.0r ---- - --- -- --------- ---
TR—E--R FJw 53
Ntic ,�� L—t-f TM WtlU�w
FWn War SIN.
0.0 -- - —r
1990 1995 2000 2005 2010 2015 2020 2025
Year
z
r
t
t
Section 5-Water Supply Sources Section 5-Water Supply Sources
The 26 mg/L level for the Hirschdale Well given in Table 5-2 was determined from samples Table 5-3. Available Water Production Capacity Consi ring Water Quality Regulations
taken at the wellhead. The Hirschdale Well is equipped with a pressure filter system for iron and Name Year 2004 Total Year 2004 Firm Year 2006 Total Year 2006 Firm
manganese removal. Currently,finished water served to customers in the Hirschdale area has an Capacity, m Capacity, m Capacity, m Capacity, m
arsenic level of 22 mg/L. During 2005,the District will be conducting pilot studies to determine A Well 150 150 150 150
if the existing treatment process can be modified to remove arsenic. The District has also Airport z, 00 0 2,000 0
Donner Lake Intake 1,400 1,400 oa oa
initiated discussions with the party that owns the parcel of land between the Hirschdale water Glenshire Drive 1,800 1,800 1,800 1,800
system and the Glenshire subdivision. The purpose of these discussions is to obtain an easement a a
Greenpoint Springs 100 100 0 0
for a pipeline that would connect the two water systems and provide the Hirschdale area with a Martis Valley Well No.1 1,725 1,725 1,725 1,725
new water supply without the need for treatment. Northside 810 810 500b 500b
Prosser Annex 400 400 400 400
Radon Regulations Prosser Heights 350 350 350 350
Preliminary announcements from USEPA have indicated that the maximum allowable radon Prosser Village 1,200 1,200 1,200 1,200
level will likely be reduced from 4,000 picocuries per liter(pCi/L)to 300 pCi/L. Table 5-2 also Sanders 300 300 300 300
Southside No.2 225 225 225 225
gives a summary of the radon level in the existing wells based on the most recent test results.As Well No.204 560 560 560 1 560
shown by the data,all of the wells will exceed the proposed radon limit.The proposed radon Total,gpm 11,020 9,020 9,210 7,210
level limit is under review and may be set a level higher than 300 pCi/L. Two methods have Total,mgd 15.9 13.0 13.3 10A
been identified to address the proposed reduction in the allowable radon level. Note: The Hirschdale Well is omitted since it is part of an independent system and cannot be used to serve
j demands in the Truckee System
i One method involves the removal of radon in the water by aeration.Treatment by aeration would b Surface water source to be removed from service during 2005
require the installation of separate aeration tanks and booster pumping stations at each well site. Assumed capacity reduction using the"Avoidance"Method
This method would require a significant capital investment, along with incurring higher
operations and maintenance costs.Capital costs range from$100,000 to$150,000 for each well ADDITIONAL WATER PRODUCTION CAPACITY
y site.Operation and maintenance costs are estimated at$0.05 per thousand gallons. The currently available production capacity will be unable to meet projected maximum day
E( The second method is a Multimedia Mitigation Program proposed by EPA. The Multimedia demands in the year 2006. With the projected Buildout maximum day demand of 25.46 mgd,an
Mitigation Program addresses both water and air quality at the point of use.This program has a additional 15.2 mgd of production capacity is needed to meet buildout demands and to provide
t limited involvement by the water provider and is focused mainly on air quality. No cost adequate firm capacity to the system.
estimates are available at this time,but it is anticipated that the Multimedia Mitigation Program
costs will be substantially lower than the cost of treatment by aeration.Therefore,it is expected Based on the 13.3 mgd of total available capacity,an additional 12.2 mgd of production capacity
that the forthcoming radon regulations will have a minimal impact on the District's water supply. is needed over the next 22 years to meet projected demands. Furthermore,an additional 2.9 mgd
of capacity will be necessary to ensure that the system has adequate firm capacity. There are
Available Water Production Capacity Considering Water Quality Regulations three alternatives available to the District for additional water supply to meet this need:
As noted above,the District will be removing the Donner Lake Intake and Greenpoint Springs • Construct additional wells not requiring filtration
from potable water service during the Summer of 2005. The capacity of Northside Well may
also be reduced due the new arsenic regulations. Table 5-3 gives the anticipated water • Construct additional wells requiring filtration
production capacity utilizing existing facilities after considering the impact of both the upcoming • Construct a surface water treatment facility
arsenic and radon regulations.
Historically,the District has used groundwater as its sole source of supply. Construction of a
surface water treatment plant was undertaken by a developer in the earlier 1970s,but was halted
due to political issues and questions regarding the status of water rights. It is recommended that
groundwater continue to be the main source of supply.
Based the studies cited at the beginning of this Section,the additional groundwater wells can be
constructed without exceeding the sustainable yield of the groundwater basin. Construction of
new wells is expected to be the short-term solution to increasing water supply. As development
occurs in adjoining areas of the Martis Valley,the overall withdrawals from the basin will need
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Section 5-Water Supply Sources Section 5-Water Supply Sources
RELIABILITY OF WATER SUPPLY Table 5-1. Historic and Projected Potable Water Demand
Currently,the major producers of water in the MVGB are the District,the Placer County Water Available
Agency(Lahontan Subdivision),Donner Creek Mobile Home Park,Ponderosa Golf Course,and Average Day Maximum Day Production Notes
Tcichert Aggregates. There are numerous small wells supporting individual residences along Year Demand mgd Demand m d Capacity,mgd
with some other uses such as the Martis Creek Campground. Total basin-wide withdrawals for 1990 2.89 6.47 6.9
the year 2000 were estimated 7,262 AFY. 1991 3.07 6.88 6.9
1992 2.61 5.83 6.9
For 2004, withdrawals from the MVGB by the District totaled 7,109 AF for potable water 1993 2.81 6.63 6.9
purposes and an additional 276 AF for irrigation and construction water purposes. An additional 1994 3.28 6.78 6.9
335 AF of surface water was used by the District in the Donner Lake area. Total withdrawals 1995 3.10 5.78 7.6 Prosser Annex Well Completed
from the basin are estimated at about 8,905 AFY for the year 2004. 1996 3.47 6.49 7.6
1997 3.52 6.64 7.6
1998 3.47 7.22 8.2 Glenshire Drive Well Completed
Buildout average day potable water demand for the District is projected at 13.05 mgd. 1999 4.08 7.63 8.2
Therefore,a sustainable water supply about 14,619 AFY will be required to meet this buildout 2000 4.29 8.58 8.6 Donner Creek Well Capacity Upgrade
condition. An additional 261 AFY(85 million gallons annually)will be needed to serve non- Martis Valley Well No.1 constructed
potable water demands for a total of 14,880 AFY. 2001 4.65 8.60 10.0 Donner Creek Well removed from potable water
service
In May 2001, a document entitled Technical Memorandum and Net Depletion for Mards 2002 6.09 11.47 14.6 Includes DLWS and GWS Demands and Supply
Small DLWS and GWS Wells removed Gom
Valley Groundwater Basin prepared by David Antonucci estimated buildout water demand for 2003 6.05 11.50 15.0 potable water service
all water producers throughout the MVGB at 20,936 AFY. This document projected a buildout Glenshire Drive Well capacity increased
demand of 13,326 AFY for areas currently served by the District,with 7,610 AFY for areas 2004 6.57 12.61 16.73 Prosser Village Well constructed
currently served by other agencies or individual wells. Assuming the 7,610 AFY estimate for 2005 6.85 13.16 13.8 Donner Lake Intake and Greenpoint Springs
other parties is correct,a total of 22,490 AFY is needed to serve the entire region. removed from potable water service
2006 7.14 13.71 13.3 Northside Well capacity reduced to 500 gpm
2007 7.42 14.26 13.3
With a total water supply of at least 24,000 AFY,there is adequate water supply to meet the 2008 7.71 14.80 13.3
projected buildout conditions. In addition,there are a total of 484,000 acre-feet of water in 2009 8.00 15.35 13.3
storage in the MVGB. Total demand of 22,490 AFY at buildout is equal to less than five percent 2010 8.28 15.90 13.3
€ of the capacity of the MVGB and there is adequate water to provide for over 20 years worth of 2011 8.57 16.45 13.3
i demand even if no recharge of the basin were to occur. Considering the large amount of water in 2012 8.85 17.00 13.3
storage in relation to the projected buildout demand,one year(or even multiple years)of below 2013 9.14 17.54 13.3
average precipitation and basin recharge will not have an impact upon the water supply. 2014 9.42 18.09 13.3
2015 9.71 18.64 13.3
EXISTING PRODUCTION CAPACITY IN RELATION TO PROJECTED DEMANDS 201 19.19 13.3
2017 10.2.28 19.74 13.3
Current maximum day potable water demand is 12.61 mgd. It is anticipated that this maximum 2018 10.56 20.28 13.3
day demand will increase to 15.9 mgd and 21.38 mgd by the years 2010 and 2020,respectively. 2019 10.85 20.83 13.3
4 Average day water demand will increase from 6.64 mgd currently to 8.28 mgd in the year 2010 2020 11.14 21.38 13.3
i and 11.14 mgd in the year 2020. The anticipated growth in potable water demand is presented in 2021 11.42 21.93 13.3
Table 5-1 and is also shown graphically in Figure 5-1. 2022 11.71 22.48 13.3
2023 11.99 23.02 13.3
.57 13.3
2 12.28 3
The District currently operates twelve potable water wells in the Truckee area and one in the 2022024 12.28 2 .12 13.3
Hirschdale area. The total capacity of these wells is about 9,550 gpm. As shown in Table 5-1, 2026 12.85 24.67 13.3
the overall system production capacity is adequate for 2005,even with removal of the Donner lBuildoutl 13.05 1 25.46 1 13.3
Lake Intake and Greenpoint Springs from potable water service. However,adequate capacity
does not exist to serve projected demands in 2006 with a projected maximum day demand of
13.7 mgd compared with a production capacity of 13.3 mgd. Currently,there is insufficient firm
capacity,since a failure of Airport Well would leave a production capacity of only 10.4 mgd.
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Figure 4-2. Projected Increase in Water Demand
28.0- - - --- .___-.------- - - - ------ ----�
- _— -
•--�--Historic Average Day Demand SECTION 5
•Future Average Day Demand Projection
---a--Historic Maximum Day Demand
24.0 -- ---Estimated Historic Maximum Day Demand ------------- - AI
Future Maximum Day Production Projection
9 WATER SUPPLY SOURCES
Note: The large increase in demand from 2001 to 2002',
3 20.0 includes the acquisition of the Donner Lake and Glenshire
Water Systems. All future demand projections include then
Donner Lake and Glenshire areas. J
16.0 --- -- ------------_. ` - -----
C
if a
1
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4.0 ------ -------------------------- ----------------------------------------
0.0
1980 1985 1990 1995 2000 2005 2010 2015 2020 2025
i
Year
[3{
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Section 4-Water Demands Section 4-Water Demands
Table 4-1. Historic Potable Water Production HIRSCHDALE SYSTEM WATER PRODUCTION
Aver a a Day Maximum Day Peaking The Hirschdale Water System(HWS)is an isolated water system currently serving 20 single-
Year m d gpm m d m Factor family residences. The system was constructed in 1989 and has been owned and operated by the
1977 1.18 819 2.70 1,875 2.29 District since that time. Table 4-3 gives the historic production data for the HWS. Examination
1978 1.20 830 NA NA NA of this data shows a trend of increased water consumption with no increase in the number of
1979 1.25 869 NA NA NA connections. Maximum day demand for the year of 1993 is considered abnormally high due to
1980 1.30 901 NA NA NA
some well pump testing that was performed during that time. Demand for the years of 2000 and
1981 1.47 1,021 NA NA NA 2001 is also unusually high because a construction contractor working on Interstate 80 was
1 1982 1.53 1,060 NA NA NA
1983 1.64 1,138 NA NA NA drawing significant amounts of water from the HWS with District permission. An estimate of
1984 1.70 1,182 NA NA NA this volume of construction water usage is not available.
1985 1.91 1,328 NA NA NA
1986 1.95 1,353 NA NA NA Table 4-3. Historic Water Production for Hirschdale Water System
1987 2.32 1,611 NA NA NA Year Number of Total Annual Maximum Monthly
1988 2.31 1,606 NA NA NA Connections Production,gals Production, allons
1989 2.56 1,775 NA NA NA 1990 17 1,850,700 282,400
1990 2.89 2,005 NA NA NA 1991 19 2,471,500 417,800
1 1992 20 2,330,600 353,900
991 3.07 2,131 NA NA NA
1993 20 3,324,700 1,107,600
1992 2.61 1,810 NA NA NA 1994 20 3,453,600 651,500
1993 2.81 1,954 NA NA NA 1995 20 2,383,700 548,300
1994 3.28 2,277 6.78 4,708 2.07 1996 19 2,769,300 491,700
1995 3.10 2,150 5.78 4,016 1.86 1997 19 3,768,200 659,100
} 1996 3.47 2,407 6.49 4,505 1.87 1998 19 3,297,800 727,300
1997 3.52 2,445 6.64 4,611 1.89 1999 19 4,384,100 811,900
1998 3.47 2,413 7.22 5,014 2.08 2000 19 6,748,800 1,189,200
1999 4.08 2,833 7.63 5,299 1.87 2001 19 6,277,900 956,700
2000 4.33 3,004 8.46 5,877 1.96 2002 19 4,455,200 713,000
1 2001 4.65 3,228 8.76 6,085 1.88 2003 19 2,972,100 540,800
2004 20 3,455,200 554,300
2002 6.09' 4,229 11.47' 7.965 1.88
2003 6.05 4,204 11.50 7,986 1.90
2004 6.64 4,614 12.61 8,759 1.90
Large increase in production for 2002 results from acquisition of Donner Lake and Glenshire NON-POTABLE WATER PRODUCTION
Water Systems In the Summer of 2000,an 8-inch pipeline was constructed to provide irrigation water service to
the Coyote Moon Golf Course from the Donner Creek Well. Connections from this pipeline to
the irrigation systems at Meadow Park and the School District are also planned,but have not yet
Table 4-2. Breakdown of Water Sales by Customer Class 1995-2004 been constructed. Table 44 gives the historic water production for this system.
Total Average Commercial Commercial Sales, Residential Residential Sales,
Year Sales an d Sales,an d percentage Sales,an d percentage Table 4-4. Historic Water Production
1995 3.10 0.58 18.7 2.52 81.3 for Donner Creek Well Irrigation System
1996 3.47 0.56 16.1 2.91 83.9 Total Production,
1997 3.52 0.59 16.8 2.93 83.2 Year millions of gallons
1998 3.47 0.54 15.6 2.93 84.4 2001 84.0
1999 4.08 0.60 14.7 3.48 85.3 2002 61.5
2000 4.33 0.71 16.4 3.62 83.6 2003 72.7
2001 4.65 0.76 16.3 3.89 83.6 2004 83.4
2002 6.09' 0.98 16.1 5.11 83.9
2003 6.05 0.95 15.7 5.10 84.3 During the Summer of 2004,the District constructed a filling station at the Southside No.1 Well
2004 6.64 1.37 20.6 5.27 79.4 to provide a central location where contractors may draw construction water. It is estimated that
Large increase in sales for 2002 results from acquisition of Donner Lake and Glenshire Water Systems 6.6 million gallons was pumped for this purpose.
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Section 3-Water System Facilities
Table 3-5. Summary of Control Valve Station Data
Name Upstream Pressure Downstream Notes
Zone Pressure Zone
13330 Skislope Lower Glacier Donner View
13770 Skislope Middle Glacier Lower Glacier
14526 Skislope Upper Glacier Middle Glacier
16133 Skislope Upper Ski Run Lower Ski Run
Alder Creek Stockholm Alder Creek
Alder Drive Prosser Heights 6170 Inactive
Biltz Biltz Tank Armstrong Inactive
Berkshire Glenshire 2 Berkshire
Donner Trails Soma Sierra Donner Trail
Donnington Glenshire 1 Glenshire 2
Donner Park DL-North Coldstream 6080 Inactive SECTION 4
East Hillside Stockholm Hillside
East Northside 6170 Town Inactive
Greenpoint DL-Upper DL-North Inactive
Glenshire Drive Glenshire 2 Olympic Heights
Icknield Glenshire 1 Icknield
Heidi Way Stockholm Innsbruck WATER DEMANDS
Laurelwood Upper Lakeview Lower Lakeview Inactive
Manchester Glenshire 2 Glenshire 2
Martis Valley Road Ponderosa Palisades Sierra Meadows
Moraine Road Armstrong Northeast
North Bennett Flat Innsbruck Bennett Flat
Old Greenwood No.1 Glenshire 2 6040
Old Greenwood No.2 Glenshire 2 6040
t Old Greenwood No.3 Glenshire 2 6040
Old Greenwood No.4 Glenshire 2 6040
Pioneer Drive Upper Tank Northeast
Prosser Prosser Heights Upper Lakeview Inactive
Rainbow Upper Lakeview Lower Lakeview
Snowshoe Upper Lakeview Lower Lakeview
South Bennett Flat Innsbruck Bennett Flat
Summit Drive DL-North DL-Northeast
Trout Creek 6550 Stockholm Trout Creek 6550
Waterloo Glenshire 2 Waterloo
Wellington Glenshire 2 Waterloo
West Hillside Stockholm Hillside
West Northside 6170 Gateway Inactive
West Reed IDL-North DL-6124 11nactive
Page 3-10
Section 3—Water System Facilities
Table 3-3. Summ ry of Pumping Station Data
Name Suction Pressure Discharge Pressure Number of Total
Zone Zone Pumps Power,h
Airport --- Town 5 495
Alder Creek Stockholm Donner View 2 60
Armstrong Gateway Armstrong 2 40
Donner Trails Gateway Soma Sierra 4 600
Donner View Hydro Donner View Donner View Hydro 2 30
Falcon Point Innsbruck Stockholm 3 225
Glenshire Glenshire 2 Glenshire 1 2 30
Greenpoint 6124 Upper 3 60
Herringbone Stockholm Donner View 3 120
Innsbruck Innsbruck Stockholm 4 200
Martiswoods Palisades Martiswoods 2 15
Northside Town Gateway 3 180
Pinnacle Hydro Pinnacle Pinnacle Hydro 2 27.5
r s Palisades Hydro Palisades Palisades Hydro 2 37.5
Prosser Heights Hydro
� Prosser Heights Prosser Heights Hydro 2 70
} } Red Mountain 6124 Red Mountain 1 2
w
Richards Boulevard Gatewa Armstron 3 300
Roundhill Hydro Stockholm Roundhill Hydro 2 30
Sierra Meadows Sierra Meadows Palisades 2 80
Sitzmark Hydro Innsbruck Sitzmark Hydro 2 30
r' 3 f ✓l +{ r {j l r Ski Lodge Donner View Upper Ski Run 2 35
Ski Run Upper Ski Run Upper Glacier 2 30
Soma Sierra Soma Sierra Innsbruck 4 600
Southside Town Sierra Meadows 4 75
Stockholm Stockholm Pinnacle 2 40
i Strand Glenshire 2 Glenshire 1 3 120
Hydro s West Hydro
West Palisades H d Palisade Palisades H dr 1 3
Wolfe Hydro 6124 Wolfe 2 45
ram( TR=Q:E WMER
Pubic LOW Dh&W L.Owb-dRmprp SYlioEw
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Section 3—Water System Facilities
Table 3-1. Summary of Pressure Zone Data
Pressure Zone Target Lowest Service Highest Highest Lowest Static
HGL, Elevation,feet Static Service Service Service
feet Pressurepsi Elevation feet Pressurepsi
6040 6040 5838 87 5927 49
6170 6170 5880 125 6050 52
Alder Creek 6610 6300 134 6440 74
Armstrong 6334 5959 162 6200 58
Bennett Flat 6352 6196 68 6225 55
Berkshire 5985 5823 70 5885 43
DL-6124 6124 5940 80 6050 32
DL-North 6229 5940 125 6155 32
DL-Northeast 6085 5940 63 5975 48
DL-Red Mountain 6200 6100 43 6110 39
DL-Upper 6400 6115 123 6125 119
DL-Wolfe 6220 6035 80 6140 35
Donner Trails 6160 5932 99 6005 67
Donner View 6894 6612 122 6806 38
Donner View Hydro 6990 6820 74 6890 43
Gateway6040 5825 93 5990 22
zh
Glacier 7500 7210 126 7370 56 r' , E s�j [
Glenshire 1 6341 5880 200 6203 60
Glenshire 2 6163 5823 147 6038 54 " " r
TM
1 Heidi Way 6815 6595 95 6645 74
Heights Hydro 6415 6183 100 6325 40
> ,H
1 Hillside 6660 6357 131 6526 58 s �y t ,
Hirschdale 5626 5495 58 5535 39
Icknield 6058 5840 94 5850 90 G
Innsbruck 6493 6157 145 6455 16
Lower Lakeview 6I30 5820 134 6040 40
Lower Ski Run 7088 6850 103 6954 58 ~ ram
Lower Skislope 7015 6752 114 6830 80
Martiswoods 6360 6210 65 6255 45
Middle Skislope 7172 6800 161 7010 70
Olympic Heights 5985 5745 104 5890 41 '
Palisades Hydro 6390 6180 91 6220 74 ,� TRUCKEE DORRER Fpun 1,
Pinnacle 6843 6588 110 6756 38 ij Pubk UKr OkM Laatlond Wow Soppy 9oums
Pinnacle Hydro 6950 6752 86 6820 56
Ponderosa Palisades 6298 6025 118 6220 34
Prosser Heights 6338 6000 146 6180 68
Roundhill Hydro 6790 6618 74 6660 56
Sierra Meadows 6146 5880 115 6030 50
Situnark Hydro 6580 6435 63 6440 61
Soma Sierra 6286 6000 124 6200 37
Stockholm 6708 6395 135 6641 29
Town 6024 5745 121 5950 32
Trout Creek 6550 6550 6375 76 6420 56
Upper Lakeview 6230 5975 110 6100 56
Upper Ski Run 7193 6954 103 7140 23
Upper Skislope 7366 7010 154 7274 40
Waterloo 6071 5825 106 5876 84
West Palisades Hydro 1 6250 1 6100 1 65 1 6210 1 17
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Page 3-2
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Section 2-Service Area
Table 2-1. Historic Population Data
Year Truckee Area Data Source
Po ulation
1970 2,528 1995 Water System Master Plan
1971 2,750 1995 Water System Master Plan
1972 2,966 1995 Water System Master Plan
1973 3,137 1995 Water System Master Plan
e 1974 3,375 1995 Water System Master Plan
1975 3,568 1995 Water System Master Plan
1976 3,711 1995 Water System Master Plan
1977 3,942 1995 Water System Master Plan
1978 4,239 1995 Water System Master Plan
1979 4,978 1995 Water System Master Plan
1980 5,539 1995 Water System Master Plan Figure 2-3. Historic and Projected Population,1980-2025
25,000
1981 6,371 1995 Water System Master Plan
1982 6,844 1995 Water System Master Plan -Historic Population
1983 7,136 1995 Water System Master Plan t Population Projection in 1996 General Plan
1984 7,254 1995 Water System Master Plan tPopulation Projection Based on 2005 Draft General Plan Update
1985 7,631 1995 Water System Master Plan 20,000
1986 7,800 1995 Water System Master Plan
1987 7,950 1995 Water System Master Plan
1988 8,240 1995 Water System Master Plan
1989 8,471 1995 Water System Master Plan
1990 8,912 Town of Truckee General Plan,1996
1991 9,482 1995 Water System Master Plan 15,000 ------------ _- -------
zo-P e�s-
y Year-Population'
1992 9,975 1995 Water System Master Plan o zoos-15,100
1993 10,250 1995 Water System Master Plan
1994 11,150 California Department of Finance' c 2020-20,729
1995 11,800 California Department of Finance' CIL 2025-22.887
1 1996 12,050 California Department of Finance' 10,000 ---------- - ---
1997 12,600 California Department of Finance'
1998 13,000 California Department of Finance'
1999 13,300 California Department of Finance'
2000 13,864 US Census Bureau,Census 2000
2001 14,200 California Department of Finance 5,000 ----- ------ - ----------------------------
2002 14,750 California Department of Finance`
2003 15,000 California Department of Finance d
2004 1 15,100 1 Town of Truckee Draft General Plan Update,2005
State of California.Department of Finance,Revised Historical City,County and State Population
Estimates,1991-2000,with 1990 and 2000 Census Counts. Sacramento,California.March 2002. 0 --- - - -- -�----
b State of Califomia,Department of Finance,E-1 City/Coumv Population Estimates,with Annual 1980 1985 1990 1995 2000 2005 2010 2015 2020 2025
Percent Change,January 1,2001 and 2002. Sacramento,California.May 2002. Year
` State of California,Department of Finance,E-I City/County Population Estimates,with Annual
Percent Change,January 1.2002 and 2003. Sacramento,California.May 2003.
State of California,Department of Finance,E-I City/County Population Estimates,with Annual
Percent Change,Januan'1,2003 and 2004. Sacramento,California.May 2004.
Page 2-5
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SECTION 2
SERVICE AREA
Law
10630. It is the intention of the Legislature,in enacting this part,to permit levels of water management
planning commensurate with the number of customers served and the volume of water supplied.
10631. A plan shall be adopted in accordance with this chapter and shall do all of the following: CALIFORNIA N EVADA
i
10631.(a) Describe the service area of the supplier,including current and projected population,climate,and other
demographic factors affecting the supplier's water management planning.The projected population
estimates shall be based upon data from the state, regional, or local service agency population
projections within the service area of the urban water supplier and shall be in five-year increments to
20 years or as far as data is available. '~
The Truckee Donner Public Utility District(District)provides water service to portions of the
town of Truckee, California,along with adjacent unincorporated areas of Nevada and Placer
Counties. The District currently operates two water systems in the Truckee area:the Hirschdale REDO"
System and the Truckee System. A third water system(the Lahontan Water System)is owned TRUCKEE • '"
by the Placer County Water Agency(PCWA)and operated by the District under contract to
PCWA. OUTH LAKE TAHOE
SACRAMENT
During the Summer of 2002, a pipeline was constructed to interconnect the Glenshire and
Truckee systems. In addition,the District's 2004 Water System Master Plan outlines projects SAN `t
that will combine the Donner Lake and Hirschdale systems with the Truckee system into a single FRANCISC
entity. These improvements should be completed by the end of 2005. Therefore,this UWMP
addresses the combined service area of all the District's water systems. \
The general location of the District is given in Figure 2-1 and the boundaries of the District's LAS VEGAS.-
water system service areas are shown in Figure 2-2. •
I DISTRICT HISTORY AND BACKGROUND
Public water service in the Truckee area began in 1880,when the Schaeffer Lumber Company \` •BAKERSFIELD
developed the Tonini Spring to serve what is now downtown Truckee. In 1883,the McGlashen
infiltration gallery was constructed,along with a transmission system to convey water to the
downtown area. In 1885,the adjacent McGlashen Spring was developed.
LOS LES , N
In 1927,the Truckee Donner Public Utility District was formed to provide electrical service to Qb a
the Truckee area. In 1935,the District began providing water service with the purchase of the ` \
McGlashen water system. In 1943,the Southside Spring was acquired by the District and in
1953,the Tonini Spring water system was obtained by the District. `
SAN DIEGO
Originally,the District's water system provided service to only the downtown area. The system
was expanded to serve the Gateway and Meadow Park areas in the late 1940s. Significant
expansion of the District's service area occurred in the 1960s as new residential subdivisions
were constructed in the area.
Service was extended to the Olympic Heights area in the early 1960s,and the Sierra Meadows
area in the mid-1960s. The Tahoe-Donner,Prosser Lakeview and Ponderosa Palisades areas
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were developed in the late 1960s,and the Armstrong area in the late 1970s.
TRUCKEE DONNER Figure 2-1
Public Utility District Location Map
Page 2-1
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SECTION 1 Section I-Introduction
INTRODUCTION
This public hearing was held at the District's regularly schedule Board Meeting on October 5,
The California Water Code requires all urban water suppliers within the state to prepare urban 2005. Notices of the meeting were published in the Sierra Sun on September 14,2005. Letters
water management plans and update them every five years. These plans satisfy the requirements were mailed directly to the following agencies advising them of the public hearing:
of the Urban Water Management Planning Act of 1983(Act)including amendments that have
been made to the Act. Sections 10610 through 10656 of the Water Code detail the information a Town of Truckee
that must be included in these plans,as well as who must file them. Appendix A contains the e Nevada County
text of the Act. This document constitutes the District's first Urban Water Management Plan a Placer County
(UWMP). a Northstar Community Services District(NCSD)
a Placer County Water Agency(PCWA)
Recent amendments to the Act now require that total projected water use be compared to water a Truckee Sanitation District
supply sources over the next 20 years in 5-year increments.The Act also requires the information a Tahoe-Truckee Sanitation Agency
be shown for a single dry water year and multiple dry water years.Additionally,the Act requires
that all plans include a water recycling analysis that includes a description of the wastewater Prior to the meeting,draft copies of the UWMP were made available for public review at the
collection and treatment system within the agency's service area along with current and potential District's office at 11570 Donner Pass Road,Truckee California.
recycled water uses.
INTERAGENCY COORDINATION
According to the Act, "The conservation and efficient use of urban water supplies are of
statewide concern;however,the planning for that use and the implementation of those plans can of accordance with the Act,the District is required to coordinate preparation of its UWMP with
other local agencies:
best be accomplished at the local level." The Act requires that each urban water supplier,
providing water for municipal purposes either directly or indirectly to more than 3,000 customers Law
or supplying more than 3,000 acre-feet of water annually,shall prepare,update and adopt its 10620(d)(2) Each urban water supplier shall coordinate the preparation of its plan with other
urban water management plan at least once every five years or before December 31,in years appropriate agencies in the area,including other water suppliers that share a common
ending in five and zero. Consequently,the District will be required to update this document in source, water management agencies, and relevant public agencies, to the extent
the year 2010,and then every five years thereafter. practicable.
The California Department of Water Resources(DWR)has prepared a checklist that lists items The District has been working cooperatively with NCSD and PCWA to study the available water
to be addressed in each water agency's plan,based on the Act.The checklist allows agencies to supplies in the Truckee and Martis Valley area. To date,one study that was jointly funded by all
identify where in their plan they have addressed each item. The District has completed this three agencies has been completed: Ground Water Availability In The Martis Valley Ground
checklist,cross-referencing the Act's sections and this document's page numbers.The completed Water Basin,Nevada And Placer Counties,California. Prepared by Nimbus Engineers. Reno,
checklist is included in Appendix B. Nevada. March 2001
PUBLIC PARTICIPATION ENVIRONMENTAL REVIEW
In accordance with the Act,the District is required to make the plan available for public review The preparation of an Urban Water Management Plan is specifically exempt from the California
and to hold a public hearing prior to adoption of the Urban Water Management Plan. Environmental Quality Act(CEQA). Therefore,a CEQA review has not been performed in
conjunction with the preparation of this document. However, the exemption only applies to
Law preparation of the UWMP and the District will have to conduct environmental reviews in order
10642. Each urban water supplier shall encourage the active involvement of diverse social,cultural, to physically construct any of the projects described in this UWMP.
and economic elements of the population within the service area prior to and during the
preparation of the plan.Prior to adopting a plan,the urban water supplier shall make the plan Law
available for public inspection and shall hold a public hearing thereon.Prior to the hearing, 10652. The California Environmental Quality Act(Division 13(commencing with Section 21000)of
notice of the time and place of hearing shall be published within the jurisdiction of the public the Public Resources Code)does not apply to the preparation and adoption of plans pursuant to
owned water supplier pursuant to Section 6066 of then Government Code. The urban water this part or to the implementation of actions taken pursuant to Section 10632.Nothing in this
supplier shall provide notice of the time and place of the hearing to any city or county within part shall be interpreted as exempting from the California Environmental Quality Act any
which the supplier provides water supplies. A privately owned water supplier shall provide an project that would significantly affect water supplies for fish and wildlife,or any project for
equivalent notice within its service area. After the hearing, the plan shall be adopted as implementation of the plan,other than projects implementing Section 10632,or any project for
prepared or as modified after the hearing. expanded or additional water supplies.
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Table of Contents LIST OF TABLES
SECTION 6—WATER DEMAND MANAGEMENT MEASURES SECTION 2—SERVICE AREA
DEMAND MANAGEMENT MEASURES................................................................................6-1 Table 2-1,Historic Population Data............................................................................................2-5
WATER CONSERVATION DMM EFFECTIVENESS............................................................6-5
DMM IMPLEMENTATION COSTS.........................................................................................6-5 SECTION 3—EXISTING WATER FACILITIES
FUTUREDMM EFFORTS.........................................................................................................6-5 Table 3-1,Summary of Pressure Zone Data................................................................................3-2
Table 3-2,Summary of Data for Potable Wells...........................................................................3-4
SECTION 7—WATER SHORTAGE CONTINGENCY PLAN Table 3-3,Summary of Pumping Station Data............................................................................3-7
WATER CONSERVATION PROGRAM..................................................................................7-2 Table 3-4,Summary of Storage Tank Data.................................................................................3-9
WATER CONSERVATION ORDINANCE...............................................................................7-2 Table 3-5,Summary of Control Valve Station Data..................................................................3-10
SECTION 8—RECYCLED WATER OPPORTUNITIES SECTION 4—WATER DEMANDS
WASTEWATERQUANTITIES AND TREATMENT..............................................................8-1 Table 4-1,Historic Potable Water Production.............................................................................4-3
CURRENT AND POTENTIAL USE OF RECYCLED WATER..............................................8-2 Table 4-2,Breakdown of Water Sales by Customer Class..........................................................4-3
Table 4-3,Historic Water Production for Hirschdale Water System..........................................4-4
APPENDIX A—TEXT OF THE URBAN WATER MANAGEMENT PLANNING ACT Table 4-4,Historic Water Production for Donner Creek Well Irrigation System.......................4-4
Table 4-5,Buildout Average Day Potable Water Demand by Planning Area.............................4-5
APPENDIX B—ORDINANCE NO.2005-05,FINDING THE NECESSITY FOR AND Table 4-6,Buildout Maximum Day Potable Water Demand by Planning Area.........................4-5
ADOPTING A WATER CONSERVATION PROGRAM IN THE EVENT OF A WATER
SUPPLY EMERGENCY SECTION 5—WATER SUPPLY SOURCES
Table 5-1,Historic and Projected Potable Water Demand..........................................................5-4
APPENDIX C—RESOLUTION NO.2005-31,ADOPTION OF THE URBAN WATER Table 5-2,Groundwater Well Arsenic and Radon Levels...........................................................5-6
MANAGEMENT PLAN Table 5-3,Available Water Production Capacity Considering Water Quality Regulations........5-8
Table 5-4,Recommended Water Production Improvements.....................................................5-10
SECTION 7—WATER SHORTAGE CONTINGENCY PLAN
Table 7-1,Water Conservation Stages.........................................................................................7-2
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