HomeMy WebLinkAboutAppendix K-Water Supply AssessmentAPPENDIX K
Water Supply Assessment
Froom Ranch Specific Plan Project
Draft EIR
This Page Intentionally Left Blank.
WATER SUPPLY ASSESSMENT
Prepared for the Froom Ranch Specific Plan
Date: 02-20-2018; revised 10-31-18; revised 01-18-19; revised 10-21-19
Prepared by RRM Design Group
Prepared for John and Susan Madonna Trust and Villaggio Communities
CREATINGENVIRONMENTSPEOPLEENJOY®
WATER SUPPLY ASSESSMENT
Water Code §10910 et seq.
Froom
[Plan for acquiring and developing
sufficient supply attached. Water Code§ 10911 (a)].
X
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Table of Contents
Page No.
1.Introduction 1
1.1: Background 1
1.2: Project Location and Description 2
2.Water Supply 2
2.1: Surface Water Supply 3
2.2: Recycled Water Supply 3
2.3: Groundwater Supply 3
3.Urban Water Management Plan Applicability 4
4.Water Resource Availability 5
5.Water Supply Reliability 6
6.Water Usage 7
6.1: Water Conservation Program 8
7.Entitlements / Regulatory Approvals 9
8.Froom Ranch Specific Plan Project 9
9.Conclusion 11
10. References 12
List of Tables:
Table 1-1: Froom Ranch Land Uses 2
Table 4-1: City Water Resource Availability 6
Table 5-1: Water Supply Reliability 7
Table 5-2: 2015 City Potable Water Supply Availability 7
Table 8-1: Froom Ranch Specific Plan Project Water Demand 9
Table 8-2: City Water Supply Availability and Froom Ranch Water Usage 11
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Appendices:
Appendix 1: Froom Ranch Water Demand Calculations
Appendix 1a: Froom Ranch Water Demand Calculations Based on the LUCE EIR
Appendix 2: Irrigation Water Use Map
Appendix 3: Irrigation Recycled Water Demand Calculations
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1. INTRODUCTION
This Water Supply Assessment was prepared for the proposed Froom Ranch Specific Plan project in
the City of San Luis Obispo, pursuant to the requirements of Section 10910 of the State Water Code,
as amended by Senate Bill No. 61O, Chapter 643 (2001).
1.1 Background
Senate Bill No. 610, effective January 1, 2002, requires a city or county, which determines that a
"project" (as defined in Water Code§ 10912) is subject to the California Environmental Quality Act
(CEQA), to identify any public water system that may supply water for the project and to request
those public water systems to prepare a specified water supply assessment. The assessment is
required to include an identification of existing water supply entitlements, water rights, or water
service contracts relevant to the identified water supply for the proposed project and water received
in prior years pursuant to those entitlements, rights, and contracts. The assessment must be approved
by the governing body of the public water system supplying water to the project. If the projected
water demand associated with the project was included as part of the most recently adopted urban
water management plan, the public water system may incorporate the requested information from
the urban water management plan in the water supply assessment.
The bill requires the city or county, if it is not able to identify any public water system that may supply
water for the project, to prepare the water supply assessment after a prescribed consultation. If the
public water system concludes that water supplies are, or will be, insufficient, plans for acquiring
additional water supplies are required to be submitted to the city or county. The city or county must
include the water supply assessment in any environmental document prepared for the project
pursuant to the act. It also requires the city or county to determine whether project water supplies
will be sufficient to satisfy the demands of the project, in addition to existing and planned future uses.
A "project" under Section 10912 includes the following:
a. A proposed residential development of more than 500 dwelling units.
b. A proposed shopping center or business establishment employing more than 1,000
persons or having more than 500,000 square feet of floor space.
c. A proposed commercial office building employing more than 1,000 persons or having
more than 250,000 square feet of floor space.
d. A proposed hotel or motel, or both, having more than 500 rooms.
e. A proposed industrial, manufacturing, or processing plant, or industrial park planned
to house more than 1,000 persons, occupying more than 40 acres of land, or having
more than 650,000 square feet of floor area.
f. A mixed-use project that includes one or more of the projects specified in this
subdivision.
g. A project that would demand an amount of water equivalent to, or greater than,
the amount of water required by a 500-dwelling unit project.
The Froom Ranch Specific Plan is a mixed - use project comprised of two development areas,
the first is referred to as Madonna Froom Ranch, the second is referred to as the Life Plan
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Community. Each of the development areas are comprised of a mix of uses and together meet
the definition of a project under Section 10912. The two development areas are listed in the table 1-
1 below:
Table 1-1. Froom Ranch Land Uses
Madonna Froom Ranch Specific Plan
Land Uses Size
Multi-Family Housing 130 units
Commercial 30,000 sq. ft.
Hotel 70,000 sq. ft.; 120 rooms
Trailhead Park 2.9 acres
Life Plan Community
Land Uses Size
Independent Living 366 units
Assisted Living Units 38 units
Memory Care 17 beds
Skilled Nursing 34 beds
Restaurants & Theaters 15,000 sq. ft.
Recreational Facility 11,000 sq. ft.
1.2 Project Location and Description
The proposed Froom Ranch Specific Plan project is in the City of San Luis Obispo along the north
side of Highway 101, between Calle Joaquin to the south, Los Osos Valley Road to the east and the
Irish Hills Plaza to the north. The site is approximately 110 acres. Approximately 59 acres of are
proposed to remain as open space.
2. WATER SUPPLY
Water Code Section 10910(b) requires the identification of the public water system that may serve
the project. The City of San Luis Obispo is the sole water purveyor within the city limits and will provide
water to the proposed Froom Ranch Specific Plan project. The City's potable water is supplied from
multiple surface water sources. In addition, recycled water and groundwater are used to supplement
irrigation demands.
The Water and Wastewater Management Element of the General Plan, first adopted in 1987 and
most recently updated in May of 2018, specifies that the City of San Luis Obispo utilize multiple water
resources to meet its water supply needs. Having several sources of water avoids dependence on any
one source that may be impacted by drought or other water supply reduction or emergency. With
the update of the Water and Wastewater Management Element, the City Council reaffirmed the
policy for a multi-source water supply. Consistent with the multi-source water supply concept, the
City obtains water from five sources:
• Salinas Reservoir (Santa Margarita Lake) and Whale Rock Reservoir: Combined Safe
Annual Yield 4,910 acre-feet (AF)/year
• Nacimiento Reservoir: 5,482 AF/year dependable yield/ contractual limit
• Recycled water from the City's Wastewater Resource Recovery Facility (WRRF): 238
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AF/year 2015 Annual Usage
• Groundwater: Supplemental usage, 43 AF/year in 2018
2.1 Surface Water Supply:
The Salinas Dam was built in 1942 by the War Department to supply water to Camp San Luis Obispo
and secondarily, to meet the water needs of the City of San Luis Obispo. The Salinas Reservoir (Santa
Margarita Lake) captures water from a 112-square mile watershed and can store up to 23,843 AF.
Since the late 1940s, the San Luis Obispo County Flood Control and Water Conservation District
has operated the Salinas Reservoir under a lease from the U.S. Army Corps of Engineers. Water from
the reservoir is pumped through the one-mile long Cuesta Tunnel, and then flows by gravity to the
City's Water Treatment Plant on Stenner Creek Road.
The Whale Rock Reservoir is a 40,662 AF reservoir created by the construction of an earthen dam
on Old Creek near the town of Cayucos. The Whale Rock Dam captures water from a 20.3 square
mile watershed and water is delivered through 17.6 miles of 30-inch pipeline and by two pumping
stations. The City of San Luis Obispo owns 55.05 percent of the water storage rights at
the reservoir. The remaining water storage rights are divided between two State agencies, with Cal
Poly owning 33.71 percent and the California Men's Colony owning 11.24 percent.
The Nacimiento Reservoir provides flood protection and is a source of supply for groundwater
recharge for the Salinas Valley. It is owned and operated by the Monterey County Water Resources
Agency. Since 1959, the San Luis Obispo County Flood Control and Water Conservation District has
had an entitlement to 17,500 AF/year of water from the reservoir for use in San Luis Obispo County.
Approximately 1,750 AF/year have been designated for uses around the lake, leaving 15,750 AF/year
for allocation to other areas within the County of San Luis Obispo. The City's contractual supply is
5,482 AF.
2.2 Recycled Water Supply:
Recycled water has been envisioned as part of the City's overall water supply strategy since the 1980s.
In 1994, the City began a major capital improvement project at the WRRF that included addition of
tertiary treatment and other unit processes required to meet stringent effluent quality limits, set forth
by the Regional Water Quality Control Board, intended to protect and enhance the receiving waters
of San Luis Obispo Creek. The City completed construction of the project in 2006 and recycled water
deliveries began in May that year. The main non-potable water source is the City's WRRF which has
a design flow rate of 5,700 AF/year (5.1 mgd). The City is required to release 1,807 AF/year of flow
to San Luis Creek for environmental enhancement. The recycled water usage for 2018 totaled 244
AF/year for construction and landscape uses.
2.3 Groundwater Supply:
The groundwater basin beneath the City is relatively small and recharges very quickly following normal
rainfall periods. The groundwater basin also lowers relatively quickly during periods of below-average
rainfall. Extensive use of groundwater sustained the City through most of the drought of 1986-1991.
The City’s two largest producing wells were shut down in 1992 and 1993 when elevated nitrate levels
were detected. The City stopped utilizing the Pacific Beach well in April 2015.
The City envisions groundwater playing an important role in ensuring continued resiliency in its water
supply portfolio. The Sustainable Groundwater Management Act (SGMA) is a statewide law that
requires local agencies to adopt groundwater management plans that relate to the needs and
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resources of their communities. In 2017, the City became a Groundwater Sustainability Agency (GSA)
over the area of the San Luis Obispo Valley Groundwater Basin, designated by the California
Department of Water Resources as a Medium Priority Basin, that lies beneath and within its
jurisdictional boundaries. The San Luis Obispo Valley Groundwater Basin “eligible entities” (City,
County, Golden State Water Company, Edna Ranch Mutual Water Company-East, Varian Ranch
Mutual Water Company, and Edna Valley Growers Mutual Water Company) are all working
collaboratively to comply with SGMA requirements for the entire groundwater basin. The GSA
structure includes a Groundwater Sustainability Commission which is an advisory body to the City
Council and the Board of Supervisors. The Commission consists of one member from the City
Council, one County Supervisor and a representative of each of the identified water companies. The
City, County, and eligible entities are required by SGMA to work together to create Groundwater
Sustainability Plans by January 31, 2022.
Private wells are in use in the City, such as the well operated by San Luis Coastal Unified School
District at San Luis Obispo High School. The City’s Laguna Lake Golf Course also has two wells that
meet a portion of the irrigation demand for the course. The remainder of the irrigation demand for
the golf course is met using recycled water from the City’s Water Resource Recovery Facility. The
project contains several wells shown in Figure 2-3 (Cleath-Harris Groundwater Report 2018). The
domestic well will continue to operate at its current domestic use. The artesian well and the
Hollingsworth well are to remain and are not affected by project construction. The existing irrigation
well is to remain and provide construction water and agricultural water during construction and after
completion.
3. URBAN WATER MANAGEMENT PLAN APPLICABILITY
Water Code Section 10910(c)(1) requires a determination of whether a project was included as part
of the most recently adopted Urban Water Management Plan (UWMP). The City's most recently
adopted UWMP was adopted on June 14, 2016, and provides a description of the City's service area,
demographics, multi-source water supply, treatment, and conveyance/distribution facilities. The
UWMP also includes historical and future water demand to serve the buildout of the City consistent
with the General Plan which includes the Froom Ranch Specific Plan Project.
Since 1987, the City's General Plan has included a Water and Wastewater Management Element. The
water section of the Element includes policies related to present water demand and overall projected
water demand. The Element also addresses water conservation, water resource availability,
accounting for siltation, multi-source water supply, and recycled water.
The 2014 LUCE update included a Water Supply Assessment for the areas within the City's Urban
Reserve Line (URL). This WSA was for undeveloped and developed lands to be developed pursuant
to the LUCE.
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4. WATER RESOURCE AVAILABILITY
As described in the Water Supply Section 2, the City of San Luis Obispo has five water resources to
meet current and future City water demands: Salinas Reservoir (Santa Margarita Lake), Whale Rock
Reservoir, Nacimiento Reservoir, recycled water from the City's WRRF, and groundwater. To ensure
water supply reliability, the City determined the amount of water available from these water
resources on an annual basis. The method to determine the available yield from each resource varies
based on water right, contractual agreement, or the amount of water supplied.
Figure 2-3. Site Map and Well Location
For Salinas and Whale Rock Reservoirs the term "safe annual yield" is used to define the annual
amount of water available from these two resources. The two reservoirs are operated in a
coordinated manner to increase the available water. In contrast, the "dependable yield" from
Nacimiento Reservoir is the contractual amount of water to which the City has rights. Since
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Nacimiento Reservoir is operated as a water supply project for Monterey County, the concept of
safe annual yield is not used for the City's contractual water supply from this source. For recycled
water, the annual amount delivered is counted in the water availability calculation. Though
groundwater is part of the City's water portfolio, due to the limitations on its use, the City will not
consider this supply in estimating available water resources to meet community needs.
Table 4-1 is a summary of the City's available water resources.
Table 4-1. City Water Resource Availability
Water Resource 2018 Annual Availability
Salinas and Whale Rock Reservoir 4,910 AF Safe Annual Yield
Nacimiento Reservoir 5,482 AF Contractual Limit
Siltation to 2060 (500 AF) Policy A 4.2.2
Recycled Water Use 238 AF 2017 Annual Usage
TOTAL 10,130 AF
*Source: 2018 Water and Wastewater Management Element of the General Plan
5. WATER SUPPLY RELIABILITY
The water supply and reliability analysis provided by the 2015 UWMP uses historical information since
1941 for evaluation of water supply availability and safe annual yield for the Salinas and Whale Rock
Reservoirs. The analysis of water supply availability is based on the controlled drought period of the
two reservoirs, which occurred between 1987 and 1991. Table 5-1 below summarizes the results of
that analysis and indicates the City's water resources are reliable during extended drought periods.
Through the coordinated operation of Salinas and Whale Rock Reservoirs and the ability to use other
available water supplies (Nacimiento, recycled water, and limited groundwater), climatic conditions
such as prolonged drought do not impact the City's water supply.
As required by Section 5 of the City's Water and Wastewater Management Element, the City
accounts for water supplies necessary to meet three specific community needs, including primary
water supply, secondary water supply, and reliability reserve, see Table 5-2. The primary water supply
is defined as the amount of water needed to serve the build-out population of the city as identified in
the Land Use Element of the General Plan. The quantity of water needed for the primary water supply
is calculated using the maximum allowed per capita water use under Senate Bill X7-7 and the city's
build-out population. The maximum allowed per capita water use is 117 gallons per capita per day
(gpcd). The proposed Land Use Element build-out population is estimated to be 57,200; the primary
water supply is estimated to be 7,496 AF in the 2018 Water Resources Status Report.
The reliability reserve provides a buffer for future unforeseen or unpredicted long-term impacts to
the City's available water supply. The quantity of water for the reliability reserve is established using
twenty percent of the ten-year average of current per capita water use and the City's current
population (46,548 in 2018). The reliability reserve provides a reserve above and beyond the existing
needs of the community and may not be used for future development. In 2018, the reliability reserve
is 1,220 AF.
The secondary water supply is the amount of water remaining from the City's available water
resources above those needed to meet the primary water supply and reliability reserve. The
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secondary supply is intended to meet peak water demand periods or short-term loss of City water
supply sources.
Table 5-1. Water Supply Reliability
Average/Normal
Water Year
(acre feet)
Single Dry
Water Year
(acre feet)
Multiple Dry Water Years
Year 1 Year 2 Year 3
12,622 12,622 12,622 12,622 12,622
Percent of
Average/Normal
Year
100%
100%
100%
100%
*Source: 2015 Urban Water Management Plan
Table 5-2. 2018 City Potable Water Supply Accounting
Total
2018 Actual
Usage
(acre feet)
Primary Water
Supply
(acre feet)
Reliability
Reserve
(acre feet)
Secondary
Water Supply
(acre feet)
10,130 5,225 7,496 1,220 1,414
*Source: 2018 Water Resources Status Report
6. WATER USAGE
Water use in the city includes single-family, multi-family, commercial (including institutional and
industrial), and irrigation customers. No agricultural uses are supplied by City water and the City
does not sell water to other agencies. The City does not have additional water demands such as
water use for saline barriers, groundwater recharge, etc. As reported in the 2018 Water Resources
Status Report, the total water demand for the city in 2018 was 5,225 AF, and total demand in 2015
was 4,990 AF (during drought conditions).
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The City's water use factors for the Froom Ranch Specific Plan project land use categories are listed
below:
Land Use Category Quantity Unit
Water Use
Factor
(ac-ft/yr)
Madonna Froom Ranch
Housing (R-3 attached
townhomes) 130 Dwellings 0.3
Apartments (R-4 multi-
family/affordable) 44 Apartments 0.18
Commercial – Retail 30,000 1,000 Square
Feet 0.06
Hotel (with restaurant) 120 Rooms 0.43
Life Plan Community
Independent Living
(standalone residential
units)
61 Dwellings 0.3
Garden, Village Suite and
Standard Apartment Units 305 Apartments 0.1
Assisted Living Units
(senior apartments) 38 Apartments 0.1
Memory Care and Skilled
Nursing (beds) 51 Occupants 0.08
Commercial – Mixed-Use
Occupancy 51,500 1,000 Square
Feet 0.06
Maintenance Office 5,300 1,000 Square
Feet 0.032
Restaurants 8,000 1,000 Square
Feet 1.32
Fitness Facility with pool 13,000 1,000 Square
Feet 0.26
6.1 Water Conservation Program:
Water conservation was first referenced as a part of the City's water management policy in 1973. In
1985, the City adopted the Annual Water Operational Plan policy, establishing water conservation as
a means of extending water supplies during projected water shortages. Since 1985, many technological
and philosophical changes have occurred which are proving water conservation to be both a short-
term corrective measure for immediate water supply shortages and a long-term solution to water
supply reliability.
The City developed a Water Shortage Contingency Plan to deal with water shortage conditions that
could occur due to drought, earthquake, infrastructure failure, or other emergencies. The Plan provides
the foundation for a staged response to worsening water shortage conditions. The City uses a water
projection model to analyze current water storage at the reservoirs and to predict how long the
water supplies are available to determine the necessary level of response. There are six stages of the
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Plan: Monitor, Watch, Warning, Severe, Extreme, and Critical. Each stage provides different levels of
response for a water shortage event ranging from a ten percent supply deficiency up to a 50 percent
or greater deficiency. The Plan is also a required component of the City's UWMP which is updated
every five years per State Water Code. The City also recognizes the importance of long-term water
efficiency by supporting programs that will enhance water supply reliability and comply with any
current and/or future state mandates in water use reductions.
In 2009, Senate Bill X7-7 was passed requiring water agencies to reduce per capita water use by 25
percent by the year 2020. The City's target per capita water use would be 117 gpcd. In 2013, the City
already met that target with a use of 116 gpcd. In 2014, the City's use was estimated to be 95.8 gpcd.
In terms of water supply reliability, the City was one of the original signatories to the Memorandum
of Understanding (MOU) Regarding Urban Water Conservation and has actively pursued the
implementation of the water efficiency best management practices (BMPs) prescribed in the MOU. The
MOU was a negotiated agreement between water purveyors statewide and environmental
organizations on how best to utilize the State's water resources by incorporating conservation into
their water management practices. The BMPs have been developed over the years by water purveyors,
environmental groups, and industry stakeholders. They represent the best available water
conservation practices based on research and experience and include:
• Water conservation pricing and rate structures,
• Technical assistance for water customers,
• Incentives for indoor and outdoor water saving technologies,
• Public information and outreach, and
• Water audits.
7. ENTITLEMENTS/REGULATORY APPROVALS
Water Code Section 10910(d)(2) requires the identification of existing water supply entitlements,
water rights, or water service contracts, federal, state, and local permits for construction of necessary
infrastructure, and any regulatory approvals required to be able to deliver the water supply. The City's
entitlements are described above in the section describing water supply.
8. FROOM RANCH SPECIFIC PLAN PROJECT
The Froom Ranch Specific Plan site is proposed to be developed into multi-family dwelling units, a
Life Plan Community, commercial properties including retail, and hotel space, parks, and open space.
Table 8-1 was developed to project Froom Ranch Specific Plan's water demand using the City's water
use factors. Using these water demand factors shows that the total water use of Froom Ranch Specific
Plan would be 207.8 AF/year.
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Table 8-1. Froom Ranch Specific Plan Project Water Demand
Water Demand
Land Use Category Quantity Unit
Water Use
Factor*
(ac-ft/yr)
Total Water
Demand
(ac-ft/yr)
Indoor
Water
Demand
(ac-ft/yr)
Froom Ranch
Housing (R-3 attached
townhomes) 130 Dwellings 0.3 39.0 39.0
Apartments (R-4 multi-
family/affordable) 44 Apartments 0.18 7.9 4.8
Commercial - Retail 30,000 1,000 Square
Feet 0.06 1.8 1.3
Hotel (with restaurant) 120 Rooms 0.43 51.6 36.1
Basin planting 2.8 Acres n/a** n/a** n/a**
Parks, Trails, Parkways
and Open Space
(including creek
planting)
11.3 Acres n/a** n/a** n/a**
Subtotal 81.1
Villaggio - Life Plan Community
Independent Living
(standalone residential
units)
61 Dwellings 0.3 18.3 18.3
Garden, Village Suite
and Standard Apartment
Units (Senior)
305 Apartments 0.1 30.5 18.3
Assisted Living Units
(senior apartments) 38 Apartments 0.1 3.8 2.3
Memory Care and Skilled
Nursing (beds) 51 Occupants 0.08 4.08 2.45
Commercial - mixed use
occupancy 51,500 1,000 Square
Feet 0.06 3.09 2.16
Maintenance Office 5,300 1,000 Square
Feet 0.032 0.17 0.12
Restaurants 8,000 1,000 Square
Feet 1.32 10.56 7.39
Fitness Facility with pool 13,000 1,000 Square
Feet 0.26 3.38 2.37
Common Area
Landscaping 15.6 Acres n/a** n/a** n/a**
Subtotal
53.4
Project Totals
134.5
* Water use factors from the 1999 City of San Luis Obispo Water Use Factors
** n/a values indicate a recycled water use separate from potable water use
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ta .
Table 8-1 shows a summary of the project water demands under each land use area of the proposed
site, included in Appendix 1. Appendix 1a shows the anticipated project demands as part of the LUCE
Final EIR. The irrigation water use zones are mapped and shown in Appendix 2 and the irrigation
recycled water demands were calculated and presented in Appendix 3 and total 62.25-acre feet. The
indoor domestic demands were calculated using the City of San Luis Obispo, water use factors
percentage of indoor water use to determine the domestic water use since landscape water is
proposed to be irrigated with recycled water for all uses.
Table 8-2 compares the City of San Luis Obispo available potable water with the Froom Ranch Specific
Plan projected use.
Table 8-2. City Water Supply Availability and Froom Ranch Water Usage
City Water
Supply
City Water
Usage
City Water
Available
Froom Ranch Specific
Plan Use (calculated by
use factors)
7,496 AF/yr 4,908 AF/yr 2,588 AF/yr 134.5 AF/yr
9. CONCLUSION
The water supply demand for the Froom Ranch Specific Plan project was included in the City's Land
Use and Circulation Element Update Water Supply Assessment. A sufficient water supply is available
to serve the project.
Using the City's land use water factors, the Froom Ranch Specific Plan project's potable water demand
is 134.5 AF/year. Based on these water demand projections, there is a sufficient supply of water to
meet the project's needs.
This conclusion was determined based on this Water Supply Assessment and supporting information
in the records of the City of San Luis Obispo.
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10. REFERENCES
San Luis Obispo, City of. General Plan - Chapter 8 Water and Wastewater Management Element.
Adopted February 24, 1987, Revised May 15, 2018.
San Luis Obispo, City of. 2015 Urban Water Management Plan. Adopted June 14, 2016.
San Luis Obispo, City of. Land Use and Circulation Element Update Water Supply Assessment.
Adopted June 2014.
San Luis Obispo, City of. 2018 Water Resources Status Report.
Memorandum of Understanding Regarding Urban Water Conservation in California. Amended
September 17, 2014.
City of San Luis Obispo Water Use Factors – September 1999.
APPENDIX 1: FROOM RANCH WATER DEMAND CALCULATIONSLand Use CategoryQuantity UnitWater Use Factor (ac-ft/yr.)Total Water Demand (ac-ft/yr.)Indoor Water Demand (ac-ft/yr.)Total Recycled Water Demand (ac-ft/yr.)Permanent Recycled Water Demand (ac-ft/yr.)Housing (R-3 attached townhomes) 130 Dwellings 0.3 39.00 39.00 n/a n/aApartments (R-4 multi-family/affordable) 44 Apartments0.18 7.92 4.751.01.0Commercial - Retail30,000 1000 Square Feet0.06 1.80 1.260.70.7Hotel (with restaurant)120 Rooms0.43 51.60 36.121.21.2Basin planting2.8 Acresn/an/an/a7.53.8Parks, Trails, Parkways and Open Space (including creek planting)11.3 Acresn/an/an/a26.618.9Subtotal81.136.925.4Independent Living (standalone residential units)61 Dwellings0.3 18.30 18.30n/an/aGarden, Village Suite and Standard Apartment Units (senior apartments)305 Apartments0.1 30.50 18.30n/an/aAssisted Living Units (senior apartments)38 Apartments0.1 3.80 2.28n/an/aMemory Care and Skilled Nursing (beds)51 Occupants0.08 4.08 2.45n/an/aCommercial - mixed use occupancy51,500 1000 Square Feet0.06 3.09 2.16n/an/aMaintenance Office5,300 1000 Square Feet 0.032 0.17 0.12n/an/aRestaurants8,000 1000 Square Feet1.32 10.56 7.39n/an/aFitness Facility with pool13,000 1000 Square Feet0.26 3.38 2.37n/an/aCommon Area Landscaping15.6 Acresn/an/an/a22.022.0Subtotal53.422.022.0Project Totals134.558.947.4Notes:1. Water Use factors: City of San Luis Obsipo, September 19992. Total water demand shown for reference based on City water duty factors, water demand based on indoor use since landscape components utilize recycled water.3. Housing in R-3 zone is assumed to use potable water for private landscaping.4. Recycled water demand calculated using LandFX software (recycled water utilized for all landscape components except R-3).5. "Basin planting" wetland enhancement areas will be temporarily irrigated to establishment (assumes 50% of total)6. "Parks, Trails, Parkways, and Open Space" wetland enhancement areas and channel bottoms will be temporarily irrigated to establishment (assumes 29% of total)Froom RanchVillaggio - Life Plan CommunityWater Demand
APPENDIX 1a: FROOM RANCH WATER DEMAND CALCULATIONS BASED ON LUCE FINAL EIRLand Use CategoryQuantity UnitWater Use Factor (ac-ft/yr.)Total Water Demand (ac-ft/yr.)Indoor Water Demand (ac-ft/yr.)Total Recycled Water Demand (ac-ft/yr.)Permanent Recycled Water Demand (ac-ft/yr.)Housing (R-3 attached townhomes) 115 Dwellings0.3 34.534.5n/an/aCommercial - Retail, (Big box retail outlets) 238,000 1000 Square Feet0.06 14.310.04.34.3Commercial - mixed use occupancy30,000 1000 Square Feet0.061.81.30.50.5Restaurants8,000 1000 Square Feet1.32 10.67.43.23.2Hotel (70,000 sf includes restaurant)120 Rooms0.43 51.636.115.515.5Basin planting2.8 Acresn/a n/an/a7.53.8Parks, Trails, Parkways and Open Space (including creek planting)11.3 Acres n/a n/a n/a 26.6 18.9Project Total89.3 57.4 46.1Notes:1. Water Use factors: City of San Luis Obsipo, September 19992. Total water demand shown for reference based on City water duty factors, water demand based on indoor use since landscape components utilize recycled water.3. Housing in R-3 zone is assumed to use potable water for private landscaping.4. Recycled water demand calculated using LandEfx software (recycled water utilized for all landscape components except R-3).Water DemandFroom Ranch
HOME DEPOTWHOLE FOODSMOUNTAINBROOK CHURCHPrimarily Low Water UsePrimarily Moderate Water UsePrimarily High Water Use
Froom Ranch Estimated Water Use SummaryMadonna R-3 Madonna R-4 Madonna Retail Madonna Hotel Madonna Park Madonna Roads Il Villaggio Creek/ Trails BasinTOTAL PROJECTPercent of TotalsTotal Landsape Areas136,31332,41422,95440,60297,49630,996679,652396,133120,9631,557,524Low Water 122,41728,47320,60336,42287,59727,601551,508205,25260,4261,140,29873%Moderate Water 13,8963,9412,3504,1809,6903,395108,82180,22915,344241,84616%High Water000000193241106534519317516915%MAWA (gallons)2,293,9301,438,084948,1161,677,1174,027,1731,221,03130,153,207 17,574,6985,366,60264,699,958MAWA (units)3,0671,9231,2682,2425,3841,63240,31223,4967,17586,497ETWU (gallons)1,131,426308,338213,584378,052906,305285,2067,165,1727,452,4842,443,66220,284,22931%ETWU (units)1,5134122865051,2123819,5799,9633,26727,118Acre Feet/ Year3.470.950.661.162.780.8821.9922.877.5062.25Percent Temporary29%50%(1) Landscape ConceptsMAWA - Maximum Applied Water Allowance (Gallons/ Year) Approximate landscape areas based on conceptual site plan…ETWA - Estimated Total Water Use (Gallons/Year) Project will use primarily-drought tolerant Mediterranean and California native species, with moderate species used as accent plants and shade tolerant species* Water Calculations take a conservative approach to the amount of moderate water plants and higher water turf, and this is considered a worst case scenario* Water Calculations assume the project will primarily be irrigated with recycled water, but potable water used for lots and parkways within the R3 area. Recycled water apply "Special Landscape Area" factor.* Water Calculations include the areas of temporary irrigation, but do not include recirculating ponds or fountains. * Water Calculations assume 20 sf per all tree bubblers(2) Water Usage Assumptions For Madonna R3 areas, 5% was excluded for walkways that are not shown on plans* Shrub areas assumed 90% low water and 10% moderate water* Tree areas assumed 65% low water and 35% moderate water* Calculations assume potable water will be used for irrigation For Madonna R4, Retail, Hotel, and Park areas, 5% was excluded for walkways that are not shown on plans* Shrub areas assumed 90% low water and 10% moderate water* Tree areas assumed 65% low water and 35% moderate water For Madonna Roads, they project assumes primarily using recycled water but parkways in front of the R3 sites will use potable water.* Shrub areas assumed 90% low water and 10% moderate water* Tree areas assumed 65% low water and 35% moderate water For Il Villaggio site, 10% was excluded for walkways, parking areas and driveways that are not shown on plans* Shrub areas assumed 90% low water and 10% moderate water* Tree areas assumed 65% low water and 35% moderate water For Creek areas, project proposes setback areas, channel banks, channel bottom, and adjacent wetland enhancement areas* Setback shrub area assumes 100% low water and utilizing drip irrigation * Channel Bank shrub area assumes 25% high water, 50% moderate, and 25% low water. Banks will utilize spray irrigation. * Channel Bottom and Wetland Enhancement shrub area assumes 75% high and 25% moderate water. Channel Bottom and Wetland Enhancement will utilize temporary spray irrigation. * Creek trees assumed 50% low water and 50% moderate water For Basin areas, assumed only graded slopes and disturbed areas will be planted* Shrub around the basin areas assumed 100% low water, and irrigated with drip irrigation * Shrub areas north of the basin are assumed to be wetland enhancement and are 75% high and 25% moderate water. Wetland Enhancement will utilize temporary spray irrigation. * Tree areas assumed 50% low water and 50% moderate water* Basin areas are assumed to be tempoarily irrigated
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 136,313ET0=Reference EvapotranspirationSpecial Landscape00.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.55 X 136,313 X 0.62=2,293,930MAWA (SLA) 49.35 X0.9X0X 0.62=0MAWA (Gallons/Year) =2,293,930Project Type = residentialFroom Ranch - Madonna R3 Debbie JewellTLA (Total Landscape AreaApril 13, 20171014012
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERSL49.35 0.62 0.2 121728 7449030.850876,3562 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 13525 2069170.850243,4323 TURF ROTARYH49.35 0.62 0.8000.85004 BUBBLERL49.35 0.62 0.2 689 42160.8504,9605BUBBLERM49.35 0.62 0.5 371 56760.8506,677Total ETWU 1,131,426 Gal/YearTOTAL LOW WATER 122417TOTAL MODERATE WATER 13896TOTAL HIGH WATER TURF0TOTAL LANDSCAPE AREAS 136313ETWU =+ SLAIEFroom Ranch - Madonna R3 April 13, 20171014012
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 32,414ET0=Reference EvapotranspirationSpecial Landscape 32,4140.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.55 X 32,414 X 0.62=545,480MAWA (SLA) 49.35 X0.9X 32,414 X 0.62=892,604MAWA (Gallons/Year) =1,438,084Project Type = residentialDebbie JewellTLA (Total Landscape AreaApril 13, 20171014012Froom Ranch - Madonna R4
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERSL49.35 0.62 0.2 26652.915 1631000.8526652.915218,5352 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 2961.435 453060.852961.43556,2623 TURF ROTARYH49.35 0.62 0.8000.85004 BUBBLERL49.35 0.62 0.2 1820 111370.85182014,9235 BUBBLERM49.35 0.62 0.5 980 149930.8598018,618Total ETWU 308,338 Gal/YearTOTAL LOW WATER 28472.915TOTAL MODERATE WATER 3941.435TOTAL HIGH WATER TURF0TOTAL LANDSCAPE AREAS 32414.35April 13, 20171014012=+ SLAIEFroom Ranch - Madonna R4ETWU
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 22,954ET0=Reference EvapotranspirationSpecial Landscape 22,9540.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.45 X 22,954 X 0.62=316,039MAWA (SLA) 49.35 X0.9X 22,954 X 0.62=632,077MAWA (Gallons/Year) =948,116Project Type = non residentialFroom Ranch - Madonna RetailDebbie JewellTLA (Total Landscape AreaApril 13, 20171014012
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERSL49.35 0.62 0.2 20460 1252040.8520460.15167,7592 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 2273 347790.852273.3543,1903 TURF ROTARYH49.35 0.62 0.8000.85004 BUBBLERL49.35 0.62 0.2 143 8750.851431,1725 BUBBLERM49.35 0.62 0.5 77 11780.85771,463Total ETWU 213,584 Gal/YearTOTAL LOW WATER 20603TOTAL MODERATE WATER 2350TOTAL HIGH WATER TURF0TOTAL LANDSCAPE AREAS 22954ETWU =+ SLAIEFroom Ranch - Madonna RetailApril 13, 20171014012
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 40,602ET0=Reference EvapotranspirationSpecial Landscape 40,6020.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.45 X 40,602 X 0.62=559,039MAWA (SLA) 49.35 X0.9 X 40,602 X 0.62=1,118,078MAWA (Gallons/Year) =1,677,117Project Type = non residentialDebbie JewellTLA (Total Landscape AreaApril 13, 20171014012Froom Ranch - Madonna Hotel
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERS L49.35 0.62 0.2 36110 2209720.8536110.07296,0772 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 4012 613810.854012.2376,2253 TURF ROTARYH49.35 0.62 0.8000.85004 BUBBLERL49.35 0.62 0.2 312 19090.853122,5585 BUBBLERM49.35 0.62 0.5 168 25700.851683,192Total ETWU 378,052 Gal/YearTOTAL LOW WATER 36422TOTAL MODERATE WATER 4180TOTAL HIGH WATER TURF0TOTAL LANDSCAPE AREAS 40602April 13, 20171014012=+ SLAIEFroom Ranch - Madonna HotelETWU
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 97,496ET0=Reference EvapotranspirationSpecial Landscape 97,4960.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.45 X 97,496 X 0.62=1,342,391MAWA (SLA) 49.35 X0.9 X 97,496 X 0.62=2,684,782MAWA (Gallons/Year) =4,027,173Project Type = non residentialDebbie JewellTLA (Total Landscape AreaApril 13, 20171014012Froom Ranch - Madonna Park
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERS L49.35 0.62 0.2 87207 5336520.8587206.58715,0322 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 9690 1482370.859689.62184,0863 TURF ROTARYH49.35 0.62 0.8000.85004 BUBBLERL49.35 0.62 0.2 390 23870.853903,1985 BUBBLERM49.35 0.62 0.5 210 32130.852103,990Total ETWU 906,305 Gal/YearTOTAL LOW WATER 87597TOTAL MODERATE WATER 9900TOTAL HIGH WATER TURF0TOTAL LANDSCAPE AREAS 97496April 13, 20171014012=+ SLAIEFroom Ranch - Madonna ParkETWU
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 30,996ET0=Reference EvapotranspirationSpecial Landscape 25,3990.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.55 X 30,996 X 0.62=521,612MAWA (SLA) 49.35 X0.9 X 25,399 X 0.62=699,420MAWA (Gallons/Year) =1,221,031Project Type = residentialDebbie JewellTLA (Total Landscape AreaApril 13, 20171014012Froom Ranch - Madonna Roads
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERS L49.35 0.62 0.2 22139 1354780.8522139.1181,525 recycled2 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 2460 376330.852459.946,7343 TURF ROTARYH49.35 0.62 0.8000.85004 BUBBLERL49.35 0.62 0.2 520 31820.855204,2645 BUBBLERM49.35 0.62 0.5 280 42840.852805,3206 AREA FOR DRIP EMITTERS L49.35 0.62 0.2 4695 287320.85033,803 potable7 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 522 79810.8509,3908 TURF ROTARYH49.35 0.62 0.8000.85009 BUBBLERL49.35 0.62 0.2 247 15110.8501,77810 BUBBLERM49.35 0.62 0.5 133 20350.8502,394Total ETWU 285,206 Gal/YearRECYCLEDPOTABLETOTAL LOW WATER 22659LOW WATER 4942LOW WATER 27601 MODERATE WATER 2740MODERATE WATER 655MODERATE WATER 3395 HIGH WATER 0HIGH WATER 0HIGH WATER 0TOTAL RECYCLED25399TOTAL POTABLE5597TOTAL LANDSCAPE AREAS 30996April 13, 20171014012=+ SLAIEFroom Ranch - Madonna RoadsETWU
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 679,652ET0=Reference EvapotranspirationSpecial Landscape 679,6520.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.55 X 679,652 X 0.62=11,437,423MAWA (SLA) 49.35 X0.9X 679,652 X 0.62=18,715,784MAWA (Gallons/Year) =30,153,207Project Type = residentialDebbie JewellTLA (Total Landscape AreaApril 13, 20171014012Froom Ranch - Il Villaggio
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERSL49.35 0.62 0.2 531418 32519560.85531417.514,357,2482 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 59046 9033210.8559046.391,121,7773 AREA FOR DRIP EMITTERSL49.35 0.62 0.2 15826.05 968460.8515826.05129,7624 AREA FOR DRIP EMITTERS M49.35 0.62 0.5 47478.15 7263440.8547478.15902,0015 TURF ROTARYH49.35 0.62 0.8 19324 4730050.8519324575,8016 BUBBLERL49.35 0.62 0.2 4264 260930.85426434,9627 BUBBLERM49.35 0.62 0.5 2296 351250.85229643,620Total ETWU 7,165,172 Gal/YearTOTAL LOW WATER 551508TOTAL MODERATE WATER 108821TOTAL HIGH WATER TURF 19324TOTAL LANDSCAPE AREAS 679652April 13, 2017April 7, 4676=+ SLAIEFroom Ranch - Il VillaggioETWU
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 396,133ET0=Reference EvapotranspirationSpecial Landscape 396,1330.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.55 X 396,133 X 0.62=6,666,265MAWA (SLA) 49.35 X0.9X 396,133 X 0.62=10,908,433MAWA (Gallons/Year) =17,574,698Project Type = residentialDebbie JewellTLA (Total Landscape AreaApril 13, 20171014012Froom Ranch - Creeks/ Trails
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERS L49.35 0.62 0.2 178297 10910710.851782971,461,910 setbacks2 AREA FOR DRIP EMITTERS M49.35 0.62 0.5000.85003 AREA FOR DRIP EMITTERS H49.35 0.62 0.8000.85004 SPRAYL49.35 0.62 0.2 25770 1576950.7125769.75247,876banks5 SPRAYM49.35 0.62 0.5 51540 7884770.7151539.51,162,0716 SPRAYH49.35 0.62 0.8 25770 6307820.7125769.75914,1957 SPRAYL49.35 0.62 0.2000.7100 bottom8 SPRAYM49.35 0.62 0.5 28294 4328600.7128294.25637,956 & wetlands9 SPRAYH49.35 0.62 0.8 84883 20777260.7184882.753,011,2574 BUBBLERL49.35 0.62 0.2 1185 72510.8511859,716trees5 BUBBLERM49.35 0.62 0.5 395 60430.853957,504Total ETWU 7,452,484 Gal/YearPERMANENTTEMPORARYTOTALTOTAL LOW WATER 205252TOTAL LOW WATER 0TOTAL LOW WATER 205252TOTAL MODERATE WATER 51935TOTAL MODERATE WATER 28294TOTAL MODERATE WATER 80229TOTAL HIGH WATER 25770TOTAL HIGH WATER 84883TOTAL HIGH WATER 110653TOTAL PERMANENT 282956TOTAL TEMPORARY 113177 29% TOTAL LANDSCAPE AREAS 396133April 13, 20171014012=+ SLAIEFroom Ranch - Creeks/ TrailsETWU
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY:Ph: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comMAWA - Maximum Annual Water AllowanceMAXIMUM APPLIED WATER ALLOWANCE (MAWA)CHALLENGE:Determine the Maximum Allowable Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYMAWA=Maximum Applied Water AllowanceLandscape Area 120,963ET0=Reference EvapotranspirationSpecial Landscape 120,9630.62=Conversion factor (to gallons per square foot)ETAF=0.55 for Residential ProjectsETAF=0.45 for Non-Residential ProjectsLA=Landscaped AreaETAF for SLA=Additional ET Adjustment Factor for SLA (1.0 - 0.7 = 0.3)SLA=Portion of Landscape Area identified as Special Landscape AreaETAF=ET Adjustment Factor (ETAF)SAMPLE FORMULA:Calculate for MAWAET0 x ETAFx AREA (sf) xCONVERSION =MAWAMAWA (LA) 49.35 X 0.55 X 120,963 X 0.62=2,035,608MAWA (SLA) 49.35 X0.9X 120,963 X 0.62=3,330,994MAWA (Gallons/Year) =5,366,602Project Type = residentialFroom Ranch - BasinsDebbie JewellTLA (Total Landscape AreaApril 13, 20171014012
DATE:JOB No.:JOB NM:3765 South Higuera Street, Suite 102 / San Luis Obispo, CA 93401CALC BY: Debbie JewellPh: (805) 543-1794 Fax: (805).543.4609 email: www.rrmdesign.comETWU: Estimated Total Water UsageESTIMATED TOTAL WATER USE (ETWU)CHALLENGE:Determine the Estimated Volume of Water (Acre Feet) used for projected site improvementsTERMINOLOGYETWU= Estimated Total Water UsageET0= Reference Evapotranspiration0.62= Conversion factor (to gallons per square foot)PF= Plant Factor from WUCOLSHA= Hydrozone Area IE= Irrigation EfficiencySLA= Portion of Landscape Area identified as Special Landscape AreaET0 x 0.62 (PFxHA)NumeratorDenominator +SLAETWUHydrozoneIrrigation MethodPlant Water Use TypeRef ET Conversion PF HA Numerator IESLA1 AREA FOR DRIP EMITTERS L49.35 0.62 0.2 60146 3680570.8560146493,1552 AREA FOR DRIP EMITTERS M49.35 0.62 0.5000.85003 SPRAYL49.35 0.62 0.2000.71004 SPRAYM49.35 0.62 0.5 15064 2304600.7115064.25339,6565 SPRAYH49.35 0.62 0.8 45193 11062100.7145192.751,603,2356 BUBBLERL49.35 0.62 0.2 280 17130.852802,2967 BUBBLERM49.35 0.62 0.5 280 42840.852805,320Total ETWU 2,443,662 Gal/YearPERMANENTTEMPORARYTOTALTOTAL LOW WATER 60426TOTAL LOW WATER 0TOTAL LOW WATER 60426TOTAL MODERATE WATER 280TOTAL MODERATE WATER 15064TOTAL MODERATE WATER 15344TOTAL HIGH WATER 0TOTAL HIGH WATER 45193TOTAL HIGH WATER 45193TOTAL PERMANENT60706TOTAL TEMPORARY60257 50% TOTAL LANDSCAPE AREAS 120963ETWU =+ SLAIEFroom Ranch - BasinsApril 13, 20171014012