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To: City of San Luis Obispo 990 Palm Street San Luis Obispo, CA 93401 Project Title: Froom Ranch Water Supply Assessment The following determination has been made regarding the above-described project: � The projected water demand for the project was included in the City's most recently adopted urban water management plan. � Based on additional sources of information, a sufficient water supply is available for the project. The total water supplies available to the City during normal, single-dry, and multiple-dry years within a 20-year projection will meet the projected water demand under the project in addition to the demand of existing and other planned future uses, including, but not limited to, agricultural uses. � A sufficient water supply is not available for the project.(Plan for acquiring and developing sufficient supply attached. Water Code§10911 (aJ]. The foregoing determination is based on the following Water Supply Assessment(WSA) Information and supporting information in the San Luis Obispo General Plan Update Background Report Section 5.1,Water and 5.3 Wastewater,as well as the records of the City of San Luis Obispo. The Land Use Circulation Plan (LUCE)WSA covers the cumulative water supply impacts, and this WSA will cover the project specific impacts. Signature Date Title 20034 Froom Ranch Wafer Supply Assessment 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: Cify Wafer Supply Availability and Froom Ranch Wafer Usage 11 � I P ('I ('I P 20035 Froom Ranch Wafer Supply Assessment 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 ii � ° � � ^ 20036 Froom Ranch Wafer Supply Assessment 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 I 09 I 0 of the State Water Code, as amended by Senate Bill No. 6 I O, Chapter 643 (2001). 1.1 Background Senate Bill No. 610, effective January I, 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 I,000 persons or having more than 500,000 square feet of floor space. c. A proposed commercial office building employing more than I,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 I,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 1 � Page 20037 Froom Ranch Wafer Supply Assessment Community. Each of the development areas are comprised of a mix of uses and together meet the definition of a project under Section I 0912. The two development areas are listed in the table I- I below: Table 1-1. Froom Ranch Land Uses Madonna Froom Ranch Specific Plan Land Uses Size Multi-Family Housin 130 units Commercial 30,000 sq. ft. Hotel 70,000 s . ft.; 120 rooms Trailhead Park 2.9 acres Life Plan Community Land Uses Size Independent Livin 366 units Assisted Livin Units 38 units Memor Care 17 beds Skilled Nursing 34 beds Restaurants & Theaters 15,000 sq. ft. Recreational Facility 1 1,000 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 I 10 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 CityofSan Luis Obispo isthe 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 Rocl<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 2 � Page 20038 Froom Ranch Wafer Supply Assessment AF/year 2015 Annual Usage • Groundwater: Supplemental usage, 43 AF/year in2018 2.1 Surface Water Supply: The Salinas Dam was built in I 942 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 Lal<e) captures water from a I 12-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 Creel< 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 I 1.24 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 I 959,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 I 980s. 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 Creel<.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 I 986-I 991. The City's two largest producing wells were shut down in I 992 and I 993 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 3 � Page 20039 Froom Ranch Wafer Supply Assessment 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 worl< 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 I 0910(c)(I) 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 I 987,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. 4 � Page 20040 Froom Ranch Wafer Supply Assessment 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. �,'• ;•''. �;," -�,�,r�'.:.�.; ..�. ,k� '',� �`� ` �,,,�• .�. ��, t i . '�;, .� �� F, sm�m�&sm�u;•rHai " •.'�, ,.+�, ' r } �:��:; �� 'Irish Hills TH:1 ''�� ' �. �!,.•'S' _ t'� � ��x�_ ' �, 51` * `, r�' '+ �'f• :y '•.1 � � .� , ■� , . �'�� •� , � ��,,�:- ��;.. .. " ' .• , . , �f� .. � ' � • � ,�" _ . �i� j"�� f� �ldtlonna�mnUc LVell •,�� .. � . �'i:. ��-`� � . -��. �, . �►. r�. �°r ..- �'f•'�+1'��• h' .....+ • ,� .r! �Q �' ri`� �'��r � �. ' � � � tlJ• ti��.• `�. . . 4Lan�h �/_ •, . -. �/� � IlrxJquarlers ��4'. ,. .. I 1 �' n�/�Q � �� *. � '��'r.�1'��`t�."-- F-nmha�Brtiin +� '*'r ' Frqvm['rcck '' e'� �1 Madonna imgatlpn Well n ; . CJ (1 � ' f�. �' ' �r� �" � �� 1 ,� t .�� _.� ,� . ..r�.. f_ _� •Y.. Y � �� ' '�. � a:. � � V � L]ctentian Eiasin :' ��.:i � �� L �,�'�I �'�"� : `.• .. ^�'` . ;y 1�� " . r S.. . . •� � Cf . .�w � � � � 'r,esia�'Jdeli .�• , M�� :7 .,c.� , _�' - �.,., �:�,�� .�' _ t•� :� ,:�a ,;;r•' �s� �. ,.' p� ' ��• . w�:�1 •�' �� .��. � , ,'� .- _ . � . � --�'�l • �� ••Y� HobinGswarth Well� �� . \ .�iF�•'"` �r .:�s • , - . �; • �� ,� , ' �;. � � .,� .. R ' � Y=�.,.� � ~ 4 � �. '� � ``� ' , AY. . � ,� -,,� ' �� ' w r:.. �+��'in�lard r, .'.r•i.7� . ,'��^ :j� ��J ..� �� ,so �Ew �,�� ,r :`� " � .��r , . c:fiurch `•.''�1�'•„ } . f'ru��ertp �« � •w.E�'�� ' 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 S � Page 20041 Froom Ranch Wafer Supply Assessment 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-I is a summary of the City's available water resources. Table 4-1. Cify Wafer Resource 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 I 0,I 30 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 I 987 and 1991. Table 5-I 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 I 17 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 1,220AF. 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 6 � Page 20042 Froom Ranch Wafer Supply Assessment secondary supply is intended to meet peak water demand periods or short-term loss of City water supply sources. Table 5-I. Water Su I Reliabilit Average/Normal Single Dry Multiple Dry Water Years Water Year Water Year (acre feet) (acre feet) Year I Year 2 Year 3 I 2,622 I 2,622 I 2,622 I 2,622 I 2,622 Percent of Average/Normal I 00% I 00% I 00% I 00% Year Source:2015 Urban Water Management Plan Table 5-2. 2018 City Potable Water Supply Accountin , . . - . . . . . . . : . - - . - . . - - - - - - . - - - 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). 7 � Page 20043 Froom Ranch Wafer Supply Assessment The City's water use factors for the Froom Ranch Specific Plan project land use categories are listed below: . . - . - . . . . Madonna Froom Ranch Housing (R-3 attached 130 Dwellings 0.3 townhomes) Apartments (R-4 multi- 44 Apartments 0.18 family/affordable Commercial — Retail 30,000 1,000 Square 0.06 Feet Hotel (with restaurant) 120 Rooms 0.43 Life Plan Community Independent Living (standalone residential 61 Dwellings 0.3 units Garden, Village Suite and 305 Apartments 0.1 Standard A artment Units Assisted Living Units 38 Apartments 0.1 senior apartments Memory Care and Skilled 51 Occupants 0.08 Nursin beds Commercial — Mixed-Use 1,000 Square Occu anc 51,500 Feet 0.06 Maintenance Office 5,300 1,000 Square 0.032 Feet Restaurants 8,000 1,OOOSquare � 32 Feet Fitness Facility with pool 13,000 1,000 Square 0.26 Feet 6.1 Water Conservation Program: Water conservation was first referenced as a part of the City's water management policy in 1973. In I 985,the City adopted the Annual Water Operational Plan policy, establishing water conservation as a means of extending water supplies during projected water shortages. Since I 985,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 dueto drought,earthquake, infrastructurefailure,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 8 � Page 20044 Froom Ranch Wafer Supply Assessment 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 I 17 gpcd. In 2013,the City already met that target with a use of I I 6 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 stal<eholders. 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 • Wateraudits. 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-I 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. 9 � Page 20045 Froom Ranch Wafer Supply Assessment Table 8-1. Froom Ranch Specific Plan Project Water Demand . - � - . . Water Use Total Water Indoor Land Use Category Quantity Unit Factor* Demand Water Demand (ac-ft/yr) (ac-ft/yr) qc-ft/yr Froom Ranch Housing (R-3 attached 130 Dwellings 0.3 39.0 39.0 townhomes Apartments (R-4 multi- 44 Apartments 0.18 7.9 4.8 family/affordable Commercial - Retail 30,000 �-000 Square 0.06 1.8 1.3 Feet 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 1 1.3 Acres n/a** n/a** n/a** (including creek planting) Subtotal 81.1 Villaggio - Life Plan Communify Independent Living (standalone residential 61 Dwellings 0.3 18.3 18.3 units) Garden, Village Suite and Standard Apartment 305 Apartments 0.1 30.5 18.3 Units Senior Assisted Living Units 38 Apartments 0.1 3.8 2.3 senior a artments Memory Care and Skilled 51 Occupants 0.08 4.08 2.45 Nursin beds Commercial - mixed use 51,500 �-000 Square 0.06 3.09 2.16 occupancy Feet Maintenance Office 5,300 1,000 Square 0.032 0.17 0.12 Feet Restaurants 8,000 1,000 Square 1.32 10.56 7.39 Feet Fitness Facility with pool 13,000 �-000 Square 0.26 3.38 2.37 Feet Common Area 15.6 Acres n/a** n/a** n/a** Landscapin 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 10 � Page 20046 Froom Ranch Wafer Supply Assessment Table 8-I shows a summary of the project water demands under each land use area of the proposed site, included in Appendix I.Appendix I a 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 Froom Ranch Specific City Water City Water City Water Plan Use (calculated by Supply Usage Available use factors 7,496 AF/yr 4,908 AF/yr 2,588 AF/yr I 34.5 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 I 34.5 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. 11 � ' age 20047 Froom Ranch Wafer Supply Assessment 10. REFERENCES San Luis Obispo, City of. General Plan - Chapter 8 Water and Wastewater Management Element. Adopted February 24, 1987, Revised May I 5, 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 I999. 12 � Page 20048 APPENDIX 1: FROOM RANCH WATER DEMAND CALCULATIONS Permanent Water Use Total Water Indoor Water Total Recycled Recycled Water Factor Demand Demand Water Demand Demand Land Use Category Quantity Unit (ac-ft/yr.) (ac-ft/yr.) (ac-ft/yr.) (ac-ft/yr.) (ac-ft/yr.) Froom Ranch Housing (R-3 attached townhomes) 130 Dwellings 0.3 39.00 39.00 n/a n/a Apartments (R-4 multi-family/affordable) 44 Apartments 0.18 7.92 4.75 1.0 1.0 Commercial- Retail 30,000 1000 Square Feet 0.06 1.80 1.26 0.7 0.7 Hotel (with restaurant) 120 Rooms 0.43 51.60 36.12 1.2 1.2 Basin planting 2.8 Acres n/a n/a n/a 7.5 3.8 Parks,Trails, Parkways and Open Space (including creek planting) 1 1.3 Acres n/a n/a n/a 26.6 18.9 Subtotal 81.1 36.9 25.4 Villaggio - Life Plan Community Independent Living (standalone residential units) 61 Dwellings 0.3 18.30 18.30 n/a n/a Garden,Village Suite and Standard Apartment Units (senior apartments) 305 Apartments 0.1 30.50 18.30 n/a n/a Assisted Living Units (senior apartments) 38 Apartments 0.1 3.80 2.28 n/a n/a Memory Care and Skilled Nursing (beds) 51 Occupants 0.08 4.08 2.45 n/a n/a Commercial-mixed use occupancy 51,500 1000 Square Feet 0.06 3.09 2.16 n/a n/a Maintenance Office 5,300 1000 Square Feet 0.032 0.17 0.12 n/a n/a Restaurants 8,000 1000 Square Feet 1.32 10.56 7.39 n/a n/a Fitness Facility with pool 13,000 1000 Square Feet 0.26 3.38 2.37 n/a n/a Common Area Landscaping 15.6 Acres n/a n/a n/a 22.0 22.0 Subtotal 53.4 22.0 22.0 Project Totals 134.5 58.9 47.4 Notes: 1.Water Use factors:City of San Luis Obsipo,September 1999 2.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.Recyded 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) 20049 APPENDIX la: FROOM RANCH WATER DEMAND CALCULATIONS BASED ON LUCE FINAL EIR Water Use Total Water Indoor Water Total Recycled Permanent Recycled Factor Demand Demand Water Demand Water Demand Land Use Category Quantity Unit (ac-ft/yr.) (ac-ft/yr.) (ac-ft/yr.) (ac-ft/yr.) (ac-ft/yr.) Froom Ranch Housing (R-3 attached townhomes) 1 15 Dwellings 0.3 34.5 34.5 n/a n/a Commercial- Retail, (Big box retail outlets) 238,000 1000 Square Feet 0.06 14.3 10.0 4.3 4.3 Commercial-mixed use occupancy 30,000 1000 Square Feet 0.06 1.8 1.3 0.5 0.5 Restaurants 8,000 1000 Square Feet 1.32 10.6 7.4 3.2 3.2 Hotel (70,000 sf includes restaurant) 120 Rooms 0.43 51.b 36.1 15.5 15.5 Basin planting 2.8 Acres n/a n/a n/a 7.5 3.8 Parks,Trails, Parkways and Open Space (including creek planting) 1 1.3 Acres n/a n/a n/a 26.6 18.9 Project Total 89.3 57.4 46.1 Notes: 1.Water Use factors:City of San Luis Obsipo,September 1999 2.Total water demand shown for reference based on City water duty factors,water demand based on indoor use sin�e landscape components utilize recycled water. 3.Housing in R-3 zone is assumed to use potable water for private landscaping. 4.Recyded water demand calculated using LandEfx software(recycled water utilized for all landscape components except R-3). 20050 � 0 � o (n N J � .�` � f N � N � �� j � � a � � �� y� ' �� o °ti � � � �y �� `, 3 0 � S L O- �7 � �•�� J � 2 '�. 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O � � '�1. _ _ �,.xa'�'d}pYci.R I � CJ i✓ � � Gi ��M �j' O r;�0,� � 1 % \` <, <3 ;3 •• '�� '� O �� O� �� .��'� �� -- ��' l l "' S'�\� - \� t • t �F-�; � �� !is {� ��? �'�i � a � �� /; ^M � O � . ;� � �-- f � , .. . , �. ��i�.�{�' F 2� / � ��\ ... � t�'`�} � � ` • r ;/: J`' �� O I J�� \\\\\\ C � � _ i k �� /,�� F,-,� � ✓ • / ��\\\�\\� ��. ..` �-.�.J� i� ' '!� O 0 �� \��,�° , �.� f- � � � O '`�" �� _ . ��. �� 0� \ ,: ,-� _ ... • ' ' �� '� �z� _ "-�-� � ;� %� oo a �\`\`� I , , ��-� � , O � ✓ a � � o O -�, • ��,.� �0�� o° � ��, O O *'` ` _ � "�� • `� \�� a Y o e � ;, �- -� O � i �/j///�� l � � Q � �. � »_- - o� / � ; � � O � ° � � • ��- \\ • - :>o 0 8"� / � � � � O - � �� ,, �° ° � � � � � �� a �� \ % / J`� /` �i t � �� G� rt� ♦� �� ♦ i � ,� c�G j / O � � � t s } ♦ ��, � ♦ _ p� �� `�` {f� ``�,.,�-.,v/ ♦ � . � .. �� c° � ., . � � � f� � � �� 1 � � �� o�� f � � �� « L-�� t � ♦ e %" . � �� ' � . • ;�'11 I ��`��3 c �' �� M 1 0 � � ��\� '�� ._E t`�� f�? {� Froom Ranch Estimated Water Use Summary Madonna R-3 Madonna R-4 Madonna Retail Madonna Hotel Madonna Park Madonna Roads II Villaggio Creek/Trails Basin TOTAL PROJECT Percent of Totals Total Landsape Areas 136,313 32,414 22,954 40,602 97,496 30,996 679,652 396,133 120,963 1,557,524 Low Water 122,417 28,473 20,603 36,422 87,597 27,601 551,508 205,252 60,426 1,140,298 73% Moderate Water 13,896 3,941 2,350 4,180 9,690 3,395 108,821 80,229 15,344 241,846 16% High Water 0 0 0 0 0 0 19324 110653 45193 175169 15% MAWA(gallons) 2,293,930 1,438,084 948,116 1,677,117 4,027,173 1,221,031 30,153,207 17,574,698 5,366,602 64,699,958 MAWA(units) 3,067 1,923 1,268 2,242 5,384 1,632 40,312 23,496 7,175 86,497 ETWU (gallons) 1,131,426 308,338 213,584 378,052 906,305 285,206 7,165,172 7,452,484 2,443,662 20,284,229 31% ETWU (units) 1,513 412 286 505 1,212 381 9,579 9,963 3,267 27,118 Acre FeeU Year 3.47 0.95 0.66 1.16 2.78 0.88 21.99 22.87 7.50 62.25 Percent Temporary 29% 50% � � i � i � (1) Landscape Concepts MAWA-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 II 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 20052 r�` �= aesign DATE: April 13,2017 � g ro u p JOB No.: 1014012 JOB NM: Froom Ranch-Madonna R3 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805).543.4609 email:www.rrmdesign.com MAWA- Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE: Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = Maximum Applied Water Allowance Landscape Area 136,313 ETO = Reference Evapotranspiration SpecialLandscape 0 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAF for SLA = Additional ET Adjustment Factor for SLA(1.0-0.7=0.3) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF = ET Adjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 49.35 X 0.55 X 136,313 X 0.62 = 2,293,930 MAWA(SLA) 49.35 X 0.9 X 0 X 0.62 = 0 MAWA(Gallons/Year)- 2,293,930 ProjectType = residential 20053 �� a�5�gn DATE: April 13,2017 �r�U� JOB No.: 1014012 JOB NM: Froom Ranch-Madonna R3 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-ll94 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLENGE: Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = Estimated Total Water Usage ETO = Reference Evapotranspiration 0.62 = Conversion factor(to gallons per square foot) PF = Plant Factor from WUCOLS HA = Hydrozone Area IE = Irrigation Efficiency SLA = Portion of Landscape Area identified as Special Landscape Area ETWU _ ETO x 0.62(PFxHA) +SLA IE Numerator Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numerator IE SLA 1 AREA FOR DRIP EMITTERS L 49.35 0.62 0.2 121728 744903 O.SS 0 876,356 2 AREA FOR DRIP EMITTERS M 49.35 0.62 0.5 13525 206917 0.85 0 243,432 3 TURF ROTARY H 49.35 0.62 0.8 0 0 0.85 0 0 4 BUBBLER L 49.35 0.62 0.2 689 4216 0.85 0 4,960 5 BUBBLER M 49.35 0.62 0.5 371 5676 0.85 0 6,677 Total ETWU 1,131,426 Gal/Year TOTAL LOW WATER 122417 TOTAL MODERATE WATER 13896 TOTALHIGHWATERTURF 0 TOTALLANDSCAPEAREAS 136313 20054 r�` �= aesign DATE: April 13,2017 � g ro u p JOB No.: 1014012 JOB NM: Froom Ranch-Madonna R4 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805).543.4609 email:www.rrmdesign.com MAWA- Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE: Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = Maximum Applied Water Allowance Landscape Area 32,414 ETO = Reference Evapotranspiration SpecialLandscape 32,414 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAF for SLA = Additional ET Adjustment Factor for SLA(1.0-0.7=0.3) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF = ET Adjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 49.35 X 0.55 X 32,414 X 0.62 = 545,480 MAWA(SLA) 49.35 X 0.9 X 32,414 X 0.62 = 892,604 MAWA(Gallons/Year)- 1,438,084 ProjectType = residential 20055 �� a�5�gn DATE: April 13,2017 �r�U� JOB No.: 1014012 JOB NM: Froom Ranch-Madonna R4 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-ll94 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLENGE: Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = Estimated Total Water Usage ETO = Reference Evapotranspiration 0.62 = Conversion factor(to gallons per square foot) PF = Plant Factor from WUCOLS HA = Hydrozone Area IE = Irrigation Efficiency SLA = Portion of Landscape Area identified as Special Landscape Area ETWU _ ETO x 0.62(PFxHA) +SLA IE Numerator Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numerator IE SLA 1 AREA FOR DRIP EMITTERS L 49.35 0.62 0.2 26652.915 163100 O.SS 26652.915 218,535 2 AREA FOR DRIP EMITTERS M 49.35 0.62 0.5 2961.435 45306 0.85 2961.435 56,262 3 TURF ROTARY H 49.35 0.62 0.8 0 0 0.85 0 0 4 BUBBLER L 49.35 0.62 0.2 1820 11137 0.85 1820 14,923 5 BUBBLER M 49.35 0.62 0.5 980 14993 0.85 980 18,618 Total ETWU 308,338 Gal/Year TOTAL LOW WATER 28472.915 TOTAL MODERATE WATER 3941.435 TOTALHIGHWATERTURF 0 TOTAL LANDSCAPE AREAS 3241435 20056 r�` �= aesign DATE: April 13,2017 � g ro u p JOB No.: 1014012 JOB NM: Froom Ranch-Madonna Retail 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805).543.4609 email:www.rrmdesign.com MAWA- Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE: Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = Maximum Applied Water Allowance Landscape Area 22,954 ETO = Reference Evapotranspiration SpecialLandscape 22,954 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAF for SLA = Additional ET Adjustment Factor for SLA(1.0-0.7=0.3) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF = ET Adjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 49.35 X 0.45 X 22,954 X 0.62 = 316,039 MAWA(SLA) 49.35 X 0.9 X 22,954 X 0.62 = 632,077 MAWA(Gallons/Year)- 948,116 ProjectType = non residential 20057 �� a�5�gn DATE: April 13,2017 �r�U� JOB No.: 1014012 JOB NM: Froom Ranch-Madonna Retail 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-ll94 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLENGE: Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = Estimated Total Water Usage ETO = Reference Evapotranspiration 0.62 = Conversion factor(to gallons per square foot) PF = Plant Factor from WUCOLS HA = Hydrozone Area IE = Irrigation Efficiency SLA = Portion of Landscape Area identified as Special Landscape Area ETWU _ ETO x 0.62(PFxHA) +SLA IE Numerator Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numerator IE SLA 1 AREA FOR DRIP EMITTERS L 49.35 0.62 0.2 20460 125204 O.SS 20460.15 167,759 2 AREA FOR DRIP EMITTERS M 49.35 0.62 0.5 2273 34779 0.85 227335 43,190 3 TURF ROTARY H 49.35 0.62 0.8 0 0 0.85 0 0 4 BUBBLER L 49.35 0.62 0.2 143 875 0.85 143 1,172 5 BUBBLER M 4935 0.62 0.5 77 1178 0.85 77 1,463 Total ETWU 213,584 Gal/Year TOTAL LOW WATER 20603 TOTAL MODERATE WATER 2350 TOTALHIGHWATERTURF 0 TOTALLANDSCAPEAREAS 22954 20058 �� a��gn DATE: April 13,2017 " L,�r�U� �:a 1— JOB No.: 1014012 JOB NM: Froom Ranch-Madonna Hotel 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-ll94 Fax:(805).543.4609 email:www.rrmdesign.com MAWA- Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE: Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = MaximumAppliedWaterAllowance LandscapeArea 40,602 ETO = Reference Evapotranspiration SpecialLandscape 40,602 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAFforSLA = AdditionalETAdjustmentFactorforSLA(1.0-0.7=03) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF - ET Adjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 49.35 X 0.45 X 40,602 X 0.62 = 559,039 MAWA(SLA) 4935 X 0.9 X 40,602 X 0.62 = 1,118,078 MAWA(Gallons/Year)= 1,677,117 ProjectType = nonresidential 20059 r� d��ign DATE: April 13,2017 �' �rO U� JOB No.: 1014012 JOB NM: Froom Ranch-Madonna Hotel 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLEN6E: Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = Estimated Total Water Usage ETO - Reference Evapotranspiration 0.62 - Conversion factor(to gallons per square foot) PF = Plant Factorfrom WUCOLS HA = Hydrozone Area IE = Irrigation Efficiency SLA = Portion of Landscape Area identified as Special Landscape Area ETW U = ETO x 0.62(PFxHA) +SLA IE Numerator Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numerator IE SLA 1 AREA FOR DRIP EMITTERS L 4935 0.62 0.2 36110 220972 0.85 36110.07 296,077 2 AREA FOR DRIP EMITTERS M 49.35 0.62 0.5 4012 61381 0.85 4012.23 76,225 3 TURF ROTARY H 4935 0.62 0.8 0 0 0.85 0 0 4 BUBBLER L 4935 0.62 0.2 312 1909 0.85 312 2,558 5 BUBBLER M 4935 0.62 0.5 168 2570 0.85 168 3,192 TotaIETWU 378,052 Gal/Year TOTALLOW WATER 36422 TOTAL MODERATE WATER 4180 TOTALHIGH WATERTURF 0 TOTALLANDSCAPE AREAS 40602 20060 �� a��gn DATE: April 13,2017 " L,�r�U� �:a 1— JOB No.: 1014012 JOB NM: Froom Ranch-Madonna Park 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-ll94 Fax:(805).543.4609 email:www.rrmdesign.com MAWA- Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE: Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = MaximumAppliedWaterAllowance LandscapeArea 97,496 ETO = Reference Evapotranspiration SpecialLandscape 97,496 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAFforSLA = AdditionalETAdjustmentFactorforSLA(1.0-0.7=03) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF - ET Adjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 49.35 X 0.45 X 97,496 X 0.62 = 1,342,391 MAWA(SLA) 4935 X 0.9 X 97,496 X 0.62 = 2,684,782 MAWA(Gallons/Year)= 4,027,173 ProjectType = nonresidential 20061 r� d��ign DATE: April 13,2017 �' �rO U� JOB No.: 1014012 JOB NM: Froom Ranch-Madonna Park 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLEN6E: Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = Estimated Total Water Usage ETO - Reference Evapotranspiration 0.62 - Conversion factor(to gallons per square foot) PF = Plant Factorfrom WUCOLS HA = Hydrozone Area IE = Irrigation Efficiency SLA = Portion of Landscape Area identified as Special Landscape Area ETW U = ETO x 0.62(PFxHA) +SLA IE Numerator Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numerator IE SLA 1 AREA FOR DRIP EMITTERS L 4935 0.62 0.2 87207 533652 0.85 87206.58 715,032 2 AREA FOR DRIP EMITTERS M 49.35 0.62 0.5 9690 145237 0.85 9689.62 184,086 3 TURF ROTARY H 4935 0.62 0.8 0 0 0.85 0 0 4 BUBBLER L 4935 0.62 0.2 390 2387 0.85 390 3,198 5 BUBBLER M 4935 0.62 0.5 210 3213 0.85 210 3,990 Total ETWU 906,305 Gal/Year TOTALLOW WATER 87597 TOTAL MODERATE WATER 9900 TOTALHIGH WATERTURF 0 TOTALLANDSCAPE AREAS 97496 20062 rr� design DATE: April 13,2017 '� g ro u p JOB No.: 1014012 JOB NM: Froom Ranch-Madonna Roads 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-ll94 Fax:(805).543.4609 email:www.rrmdesign.com MAWA-Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE: Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = Maximum Applied Water Allowance Landscape Area 30,996 ETO = Reference Evapotranspiration Special Landscape 25,399 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAFforSLA = AdditionalETAdjustmentFactorforSLA�1.0-0.7=0.3) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF - ET Adjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 4935 X 0.55 X 30,996 X 0.62 = 521,612 MAWA(SLA) 49.35 X 0.9 X 25,399 X 0.62 - 699,420 MAWA(Gallons/Year)= 1,221,031 ProjectType = residential 20063 �r�A design DATE: April 13,2017 `, g ro u p JOB No.: 1014012 JOB NM: Froom Ranch-Madonna Roads 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-ll94 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLENGE: Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = Estimated Total Water Usage ETO = Reference Evapotranspiration 0.62 = Conversion factor(to gallons per square foot) PF = PlantFactorfromWUCOLS HA = Hydrozone Area IE = Irrigation Efficiency SLA = Portion of Landscape Area identified as Special Landscape Area ETWU _ ETO x 0.62(PFxHA) +SLA IE Numerator Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numerator IE SLA 1 AREA FOR DRIP EMITTERS L 4935 0.62 0.2 22139 135478 0.85 22139.1 181,525 recycled 2 AREA FOR DRIP EMITTERS M 4935 0.62 0.5 2460 37633 0.85 2459.9 46,734 3 TURF ROTARY H 4935 0.62 0.8 0 0 0.85 0 0 4 BUBBLER L 49.35 0.62 0.2 520 3182 0.85 520 4,264 5 BUBBLER M 4935 0.62 0.5 280 4284 0.85 280 5,320 6 AREA FOR DRIP EMITTERS L 49.35 0.62 0.2 4695 28732 O.SS 0 33,803 potable 7 AREA FOR DRIP EMITTERS M 4935 0.62 0.5 522 7981 0.85 0 9,390 8 TURF ROTARY H 49.35 0.62 0.8 0 0 0.85 0 0 9 BUBBLER L 4935 0.62 0.2 247 1511 0.85 0 1,778 10 BUBBLER M 49.35 0.62 0.5 133 2035 0.85 0 2,394 Total ETWU 285,206 Gal/Year RECYCLED POTABLE TOTAL LOW WATER 22659 LOW WATER 4942 LOW WATER 27601 MODERATE WATER 2740 MODERATE WATER 655 MODERATE WATER 3395 HIGH WATER 0 HIGH WATER 0 HIGH WATER 0 TOTALRECYCLED 25399 TOTALPOTABLE 5597 TOTALLANDSCAPE AREAS 30996 20064 r� design DATE: April 13,2017 " g ro u p JOB No.: 1014012 JOB NM: Froom Ranch-II Villaggio 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805�.543.4609 email:www.rrmdesign.com MAWA- Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE: Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = Maximum Applied Water Allowance Landscape Area 679,652 ETO = Reference Evapotranspiration SpecialLandscape 679,652 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAF for SLA = Additional ET Adjustment Factor for SLA(1.0-0.7=0.3) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF = ETAdjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 4935 X 0.55 X 679,652 X 0.62 = ll,437,423 MAWA(SLA) 49.35 X 0.9 X 679,652 X 0.62 = 18,715,784 MAWA(Gallons/Year)= 30,153,207 ProjectType = residential 20065 �� _ design DATE: April 13,2017 '�� g ra u p JOB No.: April 7,4676 JOB NM: Froom Ranch-II Villaggio 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLEN6E: Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = Estimated Total Water Usage ETO = Reference Evapotranspiration 0.62 = Conversion factor(to gallons per square foot) PF = PlantFactorfromWUCOLS HA = Hydrozone Area IE = Irrigation Efficiency SLA = Por[ion of Landscape Area identified as Special Landscape Area ETWU = ETOx0.62(PFxHA) +SLA IE Numeretor Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numerator IE SLA 1 AREA FOR DRIP EMITTERS L 49.35 0.62 0.2 531418 3251956 0.85 531417.51 4,357,248 2 AREA FOR DRIP EMITTERS M 4935 0.62 0.5 59046 903321 0.85 5904639 1,121,777 3 AREA FOR DRIP EMITTERS L 49.35 0.62 0.2 15826.05 96846 0.85 15826.05 129,762 4 AREA FOR DRIP EMITTERS M 49.35 0.62 0.5 47478.15 726344 0.85 47478.15 902,001 S TURF ROTARY H 49.35 0.62 0.8 19324 473005 0.85 19324 575,801 6 BUBBLER L 49.35 0.62 0.2 4264 26093 0.85 4264 34,962 7 BUBBLER M 49.35 0.62 0.5 2296 35125 0.85 2296 43,620 TotaIETWU 7,165,172 Gal/Year TOTALLOW WATER 551508 TOTAL MODERATE WATER 108821 TOTAL HIGH WATER TURF 19324 TOTALLANDSCAPE AREAS 679652 20066 r�� design DATE: April 13,2017 '� 1J��J�� J 1` JOB No.: 1014012 JOB NM: Froom Ranch-Creeks/Trails 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-ll94 Fax:(SOS).543.4609 email:www.rrmdesign.com MAWA-Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE: Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = Maximum Applied WaterAllowance Landscape Area 396,133 ETO = Reference Evapotranspiration SpecialLandscape 396,133 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAF for SLA = Additional ET Adjustment Factor for SLA(1.0-0.7=0.3) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF - ET Adjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 49.35 X 0.55 X 396,133 X 0.62 = 6,666,265 MAWA(SLA) 49.35 X 0.9 X 396,133 X 0.62 = 10,908,433 MAWA�Gallons/Year�= 17,574,698 ProjectType = residential 20067 ��+� d�sign DATE April 13,20ll �f C�rO U l , JOB No.: 1014012 ~J �Y JOB NM: Froom Ranch-Creeks/Trails 3765 South Higuera Street,Suite 102/San W is Obispo,CA 93401 CALC BY: De66ieJewell Ph:(805)543-ll94 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLENGE: Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = EstimatedTotalWaterUsage ETO = Reference Evapotranspiration 0.62 = Conversion factor(to gallons per square foot) PF = PlantFactorfromWUCOLS HA = HydrozoneArea IE = Irrigation Efficiency SLA = Portion of Landscape Area identified as Special Landscape Area ETWU = ETO x 0.62(PFxHA) +SLA IE Numera[or Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numeretor IE SLA 1 AREA FOR DRIP EMITTERS L 4935 0.62 02 llS297 1091071 0.85 ll8297 1,461,910 setbacks 2 AREA FOR DRIP EMITTERS M 49.35 0.62 0.5 0 0 0.85 0 0 3 AREA FOR DRIP EMITTERS H 4935 0.62 0.8 0 0 0.85 0 0 4 SPRAY L 4935 Ob2 0.2 25770 157695 0.71 25769J5 247,876 banks 5 SPRAY M 4935 Ob2 0.5 51540 788477 0.71 51539.5 1,162,071 6 SPRAY H 49.35 0.62 0.8 25770 630782 0.71 25769.75 914,195 7 SPRAY L 49.35 0.62 0.2 0 0 0.71 0 0 bottom 8 SPRAY M 49.35 0.62 0.5 28294 432860 0.71 28294.25 637,956 &wetlands 9 SPRAY H 49.35 0.62 0.8 84883 2077726 0.71 84882.75 3,011,257 4 BUBBLER L 49.35 0.62 0.2 1185 7251 0.85 1185 9,716 trees S BUBBLER M 49.35 0.62 0.5 395 6043 0.85 395 7,504 Total ETWU 7,452,484 Gal/Year PERMANENT TEMPORARY TOTAL TOTALLOW WATER 205252 TOTALLOW WATER 0 TOTALLOW WATER 205252 TOTAL MODERATE WATER 51935 TOTAL MODERATE WATER 28294 TOTAL MODERATE WATER 50229 TOTAL HIGH WATER 25770 TOTAL HIGH WATER 84583 TOTAL HIGH WATER 110653 TOTALPERMANENT 282956 TOTALTEMPORARY 113177 29% TOTALLANDSCAPE AREAS 396133 20068 �� design DATE: April 13,2017 " g ro u p JOB No.: 1014012 JOB NM: Froom Ranch-Basins 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805).543.4609 email:www.rrmdesign.com MAWA-Maximum Annual Water Allowance MAXIMUM APPLIED WATER ALLOWANCE(MAWA) CHALLENGE Determine the Maximum Allowable Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY TLA(Total Landscape Area MAWA = Maximum Applied Water Allowance Landscape Area 120,963 ETO = Reference Evapotranspiration Special Landscape 120,963 0.62 = Conversion factor(to gallons per square foot) ETAF = 0.55 for Residential Projects ETAF = 0.45 for Non-Residential Projects LA = Landscaped Area ETAF for SLA = Additional ET Adjustment Factor for SLA(1.0-0.7=0.3) SLA = Portion of Landscape Area identified as Special Landscape Area ETAF - ET Adjustment Factor(ETAF) SAMPLE FORMULA: Calculate for MAWA ETO x ETAF x AREA(sf) x CONVERSION = MAWA MAWA(LA) 4935 X 0.55 X 120,963 X 0.62 = 2,035,608 MAWA(SLA) 4935 X 0.9 X 120,963 X 0.62 = 3,330,994 MAWA(Gallons/Year)= 5,366,602 Project Type = residential 20069 r� d�sign DATE: April 13,2017 " g ro u p JOB No.: 1014012 JOB NM: Froom Ranch-Basins 3765 South Higuera Street,Suite 102/San Luis Obispo,CA 93401 CALC BY: Debbie Jewell Ph:(805)543-1794 Fax:(805).543.4609 email:www.rrmdesign.com ETWU: Estimated Total Water Usage ESTIMATED TOTAL WATER USE(ETWU) CHALLENGE Determine the Estimated Volume of Water(Acre Feet)used for projected site improvements TERMINOLOGY ETWU = EstimatedTotalWaterUsage ETO = Reference Evapotranspiration 0.62 = Conversion factor(to gallons per square foot) PF = Flant Factorfrom WUCOLS HA = Hydrozone Area IE = Irrigation Efficiency SLA = Portion of Landscape Area identified as Special Landscape Area ETWU = ETO x 0.62(PFxHA) +SLA IE Numerator Denominator + SLA ETWU Plant Water Hydrozone Irrigation Method Use Type Ref ET Conversion PF HA Numerator IE SLA 1 AREA FOR DRIP EMITTERS L 4935 0.62 0.2 60146 368057 0.85 60146 493,155 2 AREA FOR DRIP EMITTERS M 49.35 0.62 0.5 0 0 0.85 0 0 3 SPRAY L 4935 0.62 0.2 0 0 0.71 0 0 4 SPRAY M 4935 0.62 0.5 15064 230460 0.71 15064.25 339,656 5 SPRAY H 4935 0.62 0.8 45193 1106210 0.71 45192.75 1,603,235 6 BUBBLER L 4935 0.62 0.2 280 1713 0.85 280 2,296 7 BUBBLER M 4935 0.62 0.5 280 4284 0.85 2S0 5,320 Total ETWU 2,443,662 Gal/Year PERMANENT TEMPORARY TOTAL TOTALLOW WATER 60426 TOTALLOW WATER 0 TOTALLOW WATER 60426 TOTAL MODERATE WATER 280 TOTAL MODERATE WATER 15064 TOTAL MODERATE WATER 15344 TOTALHIGH WATER 0 TOTALHIGH WATER 45193 TOTALHIGH WATER 45193 TOTALPERMANENT 60706 TOTALTEMPORARY 60257 50% TOTALLANDSCAPEAREAS 120963 20070