OCR Text |
Show Table 19- 2 INTERIM GROUNDWATER MANAGEMENT PLAN SUMMARY Salt Lake Valley Item Limitation Withdrawal Volume • Total annual groundwater withdrawals will be limited to predetermined amounts based upon valley location. • Cumulative effects of withdrawals on quality and quantity will be considered. • Isolated wells may be approved regardless of total area or valley- wide withdrawals. • Shallow aquifer withdrawals above the recommended valley- wide limit may be authorized as long as no adverse effects are noted on other water rights. Applications/ Segregation • Limited rights ( less than 1.0 ac- ft/ yr) may be approved for single family use when a public water supply system is not available. These rights are renewable on a 10- year basis as long as no public water supply system is available at the time of extension. • Segregation will be reviewed according to their individual merits. Time Extensions • Extensions required due to unjustified delays or lack of diligence may be subject to a reduction in water right quantity, a reduction in the priority date or a denial of the extension of time request. Change Applications • Change applications will be considered based upon their individual merits which will now also include water quality. • Change applications proposing to transfer rights from the shallow to principal aquifer will not be approved. • Changes from a management area of poorer quality to a management area of better quality will not be approved. Proof of Appropriation/ Change • Only that amount of water that has been developed and placed to beneficial use can be certificated. Well Spacing/ Flow Rate • Total groundwater declines or impacts on adjacent rights with an earlier priority date shall not exceed 12 feet. Metering • All wells capable of withdrawing in excess of 50 acre- feet per year will be equipped with an instantaneous flow and total volume meter. • All wells capable of withdrawing in excess of 250 acre- feet per year shall also submit an annual water quality report for total inorganics. • Water level data are also requested if available. Reporting • All wells capable of withdrawing in excess of 50 acre- feet per year shall submit to the State Engineer an annual report stating the total amount of water withdrawn for the year. susceptibility. Change applications that consider moving water to a better quality zone will not be approved by the State Engineer. The extent of contaminated groundwater in the Salt Lake Valley ranges from areas of less than 0.1 square mile to areas greater than five square miles. The contaminants include organic and inorganic constituents. Some have infiltrated only to the shallow unconfmed aquifer, whereas others have caused deterioration of the water quality in the principal aquifer. Organic chemicals were detected in water from several wells completed in the shallow unconfmed aquifer with the greatest concentrations near landfills or tailings areas. The greatest concentrations of trace elements in water in the shallow unconfmed aquifer were from wells near landfills or tailings areas. • 19- 9 |