October 2009 - South Tahoe Public Utility District

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In response to treatment changes at the District‟s wastewater treatment facility in Lake Tahoe and regulatory requirements, the District completed in 1989 the construction of Harvey Place Reservoir, replacing Indian Creek Reservoir as the storage facility for recycled water. Indian Creek Reservoir was converted to a freshwater reservoir and the District has continued involvement with the Indian Creek Reservoir as part of their freshwater operations in Alpine County. Issues Issues prompting the preparation of this Master Plan and its associated EIR include the following. 1) The existing On-Farm emergency disposal site for recycled water does not adequately serve its intended purpose prompting the need to plan a replacement emergency temporary storage facility. 2) The District wanted to identify improvements needed in its recycled water and freshwater operations in Alpine County 3) The District was concerned about the potential loss of existing lands irrigating with its recycled water due to subdivision of the land or other causes. 4) The District wanted continued management its recycled water in conformance with applicable regulations and reduce potential effects on the environment. 5) The District desired to improve operational control of their recycled water and freshwater systems in Alpine County. 6) The District needed planning to assure conformance with their obligations regarding water quality and minimum water surface elevations in the Indian Creek Reservoir. Master Plan Preparation and Development In December 2000 the District hired a consultant to prepare a Master Plan for the District‟s recycled and freshwater facilities within Alpine County. During the initial Master Plan development it became evident that the District needed to obtain additional property in Alpine County in order to provide increased operational flexibility and long term reliability for its recycled water system. Acquisition of the Diamond Valley Ranch was completed by the District in 2006. The property totaled approximately 1,400 acres with more than 900 acres of water righted land. The land acquisition has allowed the District to pursue several options to implement needed improvements to its recycled water operations. Development of the Master Plan was suspended while acquisition of the Diamond Valley Ranch property was underway. Upon completion of the property acquisition, the District hired a consultant in 2007 to complete the Master Plan and to include in it new opportunities provided by the District‟s ownership of the Diamond Valley Ranch. Hauge Brueck Associates, working as a subconsultant, was tasked with preparing an Environmental Impact Report (EIR) related to the Master Plan as part of California Environmental Quality Act (CEQA) requirements. The EIR evaluates alternatives to the projects identified in the Master Plan, and identifies mitigation measures to avoid or lessen the environmental impacts of the master plan projects. Results and Recommendations South Tahoe Public Utility District Recycled Water Facilities Master Plan - October 2009 Page xii
Through a process of public participation and comment, along with comparison to the District‟s guiding principles (as discussed in Section 7, page 7-49), twenty-six distinct Master Plan projects were identified which reflect the most desirable aspects of all alternatives considered. The twenty-six projects include infrastructure and management projects for both recycled water and freshwater operations in Alpine County. Of the twenty-six projects, eight are recommended for implementation in the near future (five to eight years), the implementation of twelve other projects is contingent on various factors discussed in the Master Plan, the remaining six are future projects that will require additional CEQA documentation if they are to be implemented. The Master Plan projects, including a description, the project type, the recommendation status, the conceptual cost, and the Master Plan page number of the description of the project, are presented in Table ES-1. Costs for management projects and future projects were not developed. South Tahoe Public Utility District Recycled Water Facilities Master Plan - October 2009 Page xiii
Page 1 and 2: South Tahoe Public Utility District
Page 3 and 4: Table of Contents List of Tables ..
Page 5 and 6: 6.4.3 Endangered Species Act ......
Page 7 and 8: Section 13: 12.4 Potential Temporar
Page 9 and 10: 11.2 - Indian Creek Freshwater Trea
Page 11: Executive Summary Introduction, Pur
Page 15 and 16: Table ES-2 presents vital numbers r
Page 17 and 18: Section 7 - Master Plan Development
Page 19 and 20: Section 1: Introduction The purpose
Page 21 and 22: agreement between South Lake Tahoe
Page 23 and 24: irrigation ditches were used to irr
Page 25 and 26: Agreement Name 1967 Agreement Harve
Page 27 and 28: Agreement Name Celio Agreement Tent
Page 29 and 30: Section 2: Study Area 2.1 Descripti
Page 31 and 32: ecycled water facilities and public
Page 33 and 34: Section 3: Existing Freshwater Syst
Page 35 and 36: Figure 3.2: Indian Creek Reservoir
Page 37 and 38: Section 4: Existing Recycled Water
Page 39 and 40: Farm lateral must be intact to util
Page 41 and 42: 4.2.1.3 Neddenriep Ranch Partnershi
Page 43 and 44: Development in areas currently rece
Page 45 and 46: Flow (MGD) Section 5: Flow Projecti
Page 47 and 48: Table 5.0: Recycled Water Flow and
Page 49 and 50: Volume of Recycled Water (AFY) Tabl
Page 51 and 52: estimated 2028 population of 33,900
Page 53 and 54: Figure 5.2.1(b): NO 3-N versus Time
Page 55 and 56: Figure 5.2.1(f): Total Dissolved So
Page 57 and 58: 5.2.4 Groundwater Monitoring The Di
Page 59 and 60: Section 6: Recycled Water Quality R
Page 61 and 62: Services (DHS) to establish water r
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„Secondary treatment‟ means the
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6.4.4 Section 401 of the Clean Wate
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Section 7: Master Plan Development
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● ● ● ● ● To maximize rec
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annually. This inconsistency can be
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Each workshop conducted in 2001 was
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Section 8: Development of Projects
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Table 8.1 Recycled Water Facilities
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Section 9: Recycled Water Infrastru
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Several options exist for efficient
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Reservoir outlet facility to Diamon
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9.4.1 Project Description The desig
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9.5.1 Project Description Improveme
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monitoring and SCADA control system
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Pressure required to allow full fun
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elatively minor in comparison to op
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Section 10: Recycled Water Manageme
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with recycled water. This and other
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Section 11: Fresh Water Infrastruct
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Like Project No. 14 (page 11-81), p
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available storage volume of the Res
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Section 12: Fresh Water Management
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Section 13: Master Plan Implementat
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13.2 Recycled Water Production Trig
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Ranch Total Acreage Table 13.1 - Ac
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13.3 Regulation Triggered Project I
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District to realize an economic ben
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pipeline from the beginning of the
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13.8 Capital Improvement Plan The M
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2) Construct Project No.‟s 1, 2,
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13.9.3 Groundwater Monitoring Recom
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It is recommended that District imp
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October 2009 - South Tahoe Public Utility District

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