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Resolution 2292 RESOLUTION NO. 2292 A RESOLUTION OF THE SOUTH TAHOE PUBLIC UTILITY DISTRICT ORDERING CHANGES OR ALTERATIONS IN AND INCORPORATED INTO PROJECT SOUTH TAHOE PUBLIC UTILITY DISTRICT WASTEWATER FACILITIES PLANNING PROGRAM BE IT RESOLVED by the Board of Directors of the South Tahoe Public Utility District that: (1) The Facility Plan for the South Tahoe Public Utility District Wastewater Treatment System, dated May 1978, and the Facility Plan Update, dated February 1981, as well as proposed minor changes in Alpine County, have been presented to the Board of Directors of the South Tahoe Public Utility District. (2) The Final Environmental Impact Report for the South Tahoe Public Utility District Facility Plan Program, dated March 1979, the Environmental Impact Statement of the Wastewater Treat- ment Facilities of the South Shore Lake Basin, dated February 1981, and the Final Supplemental Environmental Impact Report for the South Tahoe Public Utility District Wastewater Facilities Plan Program, dated flay 1983, have been presented to and certified by the Board of Directors of the South Tahoe Public Utility District. (3) The following changes or alterations are required in /or required to be incorporated into the South Tahoe Public Utility District Wastewater Facilities Planning Program: A. Those changes described in ?,litigation Measures Summary attachment to Table 1 of said Final Environmental Impact Report for Alternative for Project 3b, incorporated- herein by reference. B. A mitigation program for the required mitigation measures for the South Tahoe Public Utility Dis- trict Mitigation Program set forth in Table 1-3 of Status Report 4 Mitigation Program, February 1983, and which said mitigation measures are directed at offsetting the environmental impacts of 8.7 MGD wastewater treatment facili- ties, incorporated herein by reference. C. Planned Mitigation Measures - Design Changes set forth in the Summary of Potential Significant Impacts and Planned Mitigation Measures in the Final Supplemental Environmental Impact Report, incorporated herein by reference. PASSED AND ADOPTED at a regular adjourned meeting of the Board of Directors of the SOUTH TAHOE PUBLIC UTILITY DISTRICT held on the 12th day of May 1983, by the following vote: I - AYES: Directors Kashuba, Olsen, Jones, Wynn and Madden. r NOES: None ABSENT: None 0T S R. JONE , PRESIDENT H TAHOE PV3LIC UTILITY DISTRICT ATTEST: RR D. CLERK OF BOARD SOUTH A eIBROSE, E PUBLIC UTILITY DISTRICT I hereby certify that the foregoing is a full, true and correct cope of RESOLUTION N0.2292 duly and regularly adopted by the Board of Directors of the SOUTH TAHOE PUBLIC UTIILTY DISTRICT, El Dorado County, State of California, on MAY 12, 1983. DATED: May 12, 1983 IlAR'Y D A 4BROSE, CLERK O O. D SOUTH AHOE PUBLIC UTILITY DISTRICT l -2- r Final Environmental Impact Report k Souvoq Uvoa_ovv DosvRoCY `YZ U ~'n=. Olt ~ FACILITIE'S WASTEWATER PLANNING PROGRAM March 1979 Prepared by: Jones S Stokes Associates, inc. ' r Attachment 2 y(W Table 1 0 MITIGATION MEASURES SUMMARY Impacts Alternatives o Mitigation Measure(s) 1 2 3A 3B1 3B2 3B34 Construction Impacts 1. Creation of local noise, dust, and aerial emissions along pipeline routes and at treatment plant and reservoir sites. X x x x x x x o Keep soil watered down in construction areas. o Require internal combustion engines to have mufflers, baffles. a o Perform construction work during normal daylight and working hours. o Comply with 208 Plan dust control recommendations. o All internal combustion engine equipment should be equipped with emission control devices. 2. Traffic disruption near construction zones. X x x x o Reroute traffic around construction areas. o Provide flagmen in areas where rerouting ' is not possible. o Comply with Caltrans safety requirements. 3. Visual disruption at construction sites. x x x x x x x o Store construction equipment in areas that would not create visual eyesores and minimize impact on vegetation. o Fence or otherwise screen construction maintenance areas. o Avoid extended stockpiling of excava- tion spoil. o Revegetate areas denuded by construction with native vegetation. 4. Disruption of agricultural operations in the Diamond Valley area during construction. x x x x x x x o Maintain access through or around construction zones. o Store equipment and materials outside of irrigation or grazed areas if possible. 5. Wildlife disturbance in construction zones. x x x x x x x o Avoid removal and/or damage of vegetation wherever possible. o Confine construction zone to smallest area possible. 6. Creation of safety hazards at construction site. x x x x x x x I 1 Alternative 4 impacts refer only to Tahoe inbasin reuse aspect. 109 Impacts Alternatives o Mitigation Measure (s) 1 2 3A 3B1 3B2 3B3 o Maintain equipment in an enclosed corporation yard. o Keep curious bystanders away from construction areas. o During trenching operations, leave no open trenches for longer than 1 working day. 7. Stream sedimentation due to construction across stream bed. x x x x x x o Comply with 208 Plan erosion control recommendations. o Stabilize and revegetate disturbed areas with native vegetation. 8. Permanent loss of natural vegetation and/or seeded pasture grasses. X x x x x x o Clear and/or manage adjacent land to improve grazing value, wildlife habitat value. o Lease back any land in excess of the amount needed to maintain reservoirs. 9. Temporary disruption of recreational activities at ICR. X x x x x x o Schedule construction during periods of low recreational use. 10. Permanent loss of deer wintering range to reservoir sites. x x x o Contact California Department of Fish and Game to discuss appropriate mitigations. o Contact Alpine County, BLM, local ranchers to determine availability of land that might be managed to improve winter range value. 11. Permanent loss of aquatic habitat (Stevens Lake). X o None. Operational Impacts 1. Operation of wastewater treatment facilities in seismically active area. X x x x x x o Reduce liquefaction hazard by removing unconsolidated soil material underlying proposed embankments. o Take vibration and liquefaction potential into account in design and construction of reservoir embankments. o Avoid alluvial soils and high water tables when routing pipeline. o Allow flexibility in pipeline design and construction in case of ground shaking. o Include shut-off valves at intervals along major pipes so that ruptures can be isolated. 2. Slow accumulation of salts in agricultural soils. x x x x x x o Periodically apply water at rates suffi- cient to flush salts through the surface soil column to lower strata (leaching). 110 Impacts 1 2 3A 3B1 3B2 3B3 o Mitigation Measure(s) 3. Decrease in quality of irrigation runoff into Indian Creek and possibly West Fork of Carson River. x x x o Institute an education and training program to maximize irrigation and tailwater recovery operations. o Examine tailwater collection systems and renovate when necessary. 4. Creation of a potential public health hazard at point of effluent discharge/ reuse. x x x x x x o Adhere to State Department of Health wastewater quality standards for irrigation reuse of wastewaters. o Manage wastewater application to minimize percolation to groundwater table. o Avoid hydraulic overloading. o Avoid wastewater irrigation in areas where domestic wells tap unconfined surface aquifers. o Establish a well-monitoring program to detect any biological or toxic chemical contamination of usable groundwater stores. o Implement advanced waste treatment 1 alternatives. 1 o Line reservoirs with impervious materials or use seepage control wells. o Fence reservoir sites and post warning signs. o Design tailwater control and application rates to keep off-site runoff to a minimum. o Maintain buffers between sprinkler systems and residences or public rights-of-way. o Mark all wastewater irrigation fixtures and outlets as nonpotable to avoid accidental human ingestion. 5. Local increase in vector populations x at wastewater storage areas. x x x x x o Consult and utilize local mosquito abatement district to monitor and control insect vectors. o Slope reservoir embankments at 2:1 or steeper to minimize breeding habitat. o Fluctuate standing water levels. o Stock reservoirs with mosquito fish and other small fishes. o Use of chemical sprays. 6. Impingement of wastewater storage facility x x on designated scenic highway corridor. x o None. 7. Increased energy consumption in waste- water treatment and disposal (per unit). x o Utilize energy-efficient pumps and motors. 111 Alternatives 3B3 qi Ims 1 2 3A 3B1 3B2 Miti ation Measure s 8. Increased use of chemicals in waste- x water treatment (per unit). o Resale of chemical by-product ammonium sulfate, generated by treatment process. o Implement secondary treatment alternatives. 9. Increase in the cost of providing x x x x x x x wastewater treatment service. o Implement least costly treatment and disposal alternative. 10. Loss of tax revenue in Alpine County x x x x due to public purchase of private land. X x o Implement treatment and disposal alternative that requires least amount of public land acquisition. 11. Increase in cost of irrigating pasture- x land, fodder crops. o Implement one of the flood irrigation alternatives. 12 ?ncrease in the volume of sewage sludge equiring processing and disposal (at x .5 or 10 mgd capacity). o Implement alternatives which do not produce chemical sludge (secondary treatment alternatives). ithin Secondary impacts ng the The D. generally discussed streparedsfor thedSTPUD and DouglasaCountyrfacilities plansowillwprovide detaiederalled sEISecondbeingary P p impact analysis of growth in the entire southern enda fhe Tahoe Basi STPUD a much more The federal practical a much It is felt that this EIS analysis will be able to suggest more specific and more possibilities for secondary impacts. Therefore, the general mitigations mentioned in the EIR have no been summarized in this table. r M l W O u w ~V) ~ Qo E-~ c0 J Q w ~ j J W 1 I ~ _ O F- ~ ~ 1 li cn 4 ~ \ S i ~l L r 1 0 1 r I I I r I r I F I F I r i r r I r I ! 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U d Q . I a lit ~ j d O .C N i d j L i w o M +J r ~ LIJ J L L Q 4- O L 0 O •'O II O c9 4O O F- V O O M 7 C C L U y V) y cu u C: (v 0 4m 0 O O N O L S- .0) C O c. L O O O r9 (9 U C L' E cm -p -O O N U ro M C -a O r ..r C O E Q, y C U O C '0 UOf N O U L t0 E O U N m -a 'L Q1 L Cu ro t -a 0 -U; ° cr a) 0 ~ o a C~ o c. 3 .L L rn N f0 Ml w C E Ml L L 3 [ VI .2 C L U -0 0 .O O) ooL:3 E o~~L c~ ~s I > 2 ~ a~ F- - t -a w U U (n _ o (n CU c -C L ' (A 00 -C -C 01 O T V) F- L ~ L I R ~ ! ~ ! ~ ! 1 1 ! 1 1 1 1 I 1 I 1 ► ! I ! I f I I I I FINAL SUPPLEMENTAL ENVIRONMENTAL IMPACT REPORT SOUTH TAHOE PUBLIC UTILITY DISTRICT WASTEWATER FACILITIES PLANNING PROGRAM SCH # 83020702 Prepared for: South Tahoe Public Utility District Prepared by: Jones & Stokes Associates, Inc. 2321 P Street Sacramento, CA 95816 May 1983 • Table 1. Summary of Potentially Significant impacts and Planned Mitigation Measures IMPACT CATEGORY POTENTIALLY SIGNIFICANT IMPACTS PI.ANNED MITIGATION MESURES-DESIGN CHANGES Public Health Human Health Risk: Sprinkler irrigation o Eliminate the southwest sprinkler rig. of Schwake property with wastewater poses o Install automatic sprinkler shutoffs for a potential health risk at Diamond Valley high wind conditions. School and nearby residences from aerosol o Use downward-pointing spray nozzles. drift. o Maintain 600-foot buffer strip from school property. Water Supply Contamination: Irrigation o Continues to monitor wells and ground- with wastewater on the Schwake property water periodically in the vicinity of could pose a risk of contamination of irrigation sites. domestic water supplies in local wells. o Fund independent monitoring program by Alpine County. o Participate in development of irrigation plans for all wastewater irrigation areas. o Provide an alternative water source i.f domestic wells are contaminated by the project. o Provide advance secondary disinfected treatment. Surface Water Contamination Risk: Runoff o Sprinkler irrigate Schwake property. from irrigation with wastewater could o Contract with soil scientist to develop create health hazard in Indian Creek or detailed irrigation plan for Dressler West Fork of Carson River. site in consultation with SCS. -&at^tallwater control systsns- established pa.a~i irrigation sites. o Relocate access road to dam site-so that it borders Indian Creek and acts as tail- water control berm. o Apply wastewater at agro G rates. o Place moisture probes in 1 irrigation areas to monitor soil mo tore content. Spillage from Harvey Place Reservoir: o Divert portions of Harvey Place Reservoir Occasional discharges from reservoir could drainage area into ICR and enlarge ICR contaminate Indian Creek. outlet pipe to reduce frequency of spillage from Harvey Place Reservoir (capacity increased to 100-year storm event) . H} Flooding: Indian Creek diversion would o Construct Millich flood control channel occasionally flood Schwake and Heise Land to intercept flood flows across Schwake and Cattle Company property. property and discharge to Indian Creek (100-year storm event capacity). Wildlife and Vegetation Loss of Habitat: Construction of Harvey o Participate in Habitat Evaluation Pro- Place Reservoir will permanently inundate cedure analysis of reservoir inundation riparian, grassland, and brush habitat. area and develop mitigation plan in co- operation with California Department of Fish and Game. Land Use Elimination of Grazing Land: Construction o Bring an equivalent area of grazing land of the Harvey Place Reservoir will convert into production (currently proposed as approximatley 60 acres of grazing land to part of irrigation plans for Dressler wastewater storage use; excavation at clay property). borrow site will remove grazing land, o Participate with SCS in develoFment of a clay removal plan. Aesthetics General Plan Conflict: Construction of o Cover embankement faces with earthern the dam embankment may conflict with material. scenic resource policies in the proposed o Re-establish vegetation on embankment Alpine County Draft General Plan. areas. +a IMPACT CATEGORY POTENTIALLY SIGNIFICANT IMPACTS PLANNED MITIGATION MEASURES-DESIGN CHANGES Cultural Resources Loss of Archeologic, Historic Resources: o Retain qualified professional archeo- Construction of the proposed facilities logical firm to prepare mitigation work could affect 23 archeological sites and two program in cooperation with California historic sites identified through field SHPO, SWRCB. surveys and a records search. o Conduct test excavations at seven sites to determine if additional mitigation is necessary or if sites eligible for National Register of Historic Places. o Comply with mitigation proposals devel- oped by archeological consultant in cooperation with SHPO.