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Show THE OGDEN VALLEY NEWS Volume VI, Issue I Page 21 April 15, 2002 2001 Annual Drinking Water Quality Report of the Eden Waterworks Company (continued from page 20) TEST RESULTS Contaminant Violation Level Unit MCLG Y/N Detected Measurement Date MCL Sampled N W ppb 200 200 2000 53. PCBs [Polychlorinated biphenyls] N W ppt 0 500 2000 54. Pentachlorophenol N W ppb 0 1 2000 55. Picloram 56. Simazine 57. Toxaphene N N N W W W ppb ppb ppb 500 4 0 500 4 3 2000 2000 2000 58. Benzene N ND ppb 0 5 2001 59. Carbon tetrachloride N ND ppb 0 5 2001 60. Chlorobenzene N ND ppb 100 100 2001 61. o-Dichlorobenzene N ND ppb 600 600 2001 62. p-Dichlorobenzene N ND ppb 75 75 2001 63. 1,2-Dichloroethane N ND ppb 0 5 2001 64. 1,1 - Dichloroethylene N ND ppb 7 7 2001 65. cis-1,2-chloroethylene N ND ppb 70 70 2001 66. trans - 1,2Dichloroethylene 67. Dichloromethane N ND ppb 100 100 2001 N ND ppb 0 5 2001 68. 1,2-Dichloropropane N ND ppb 0 5 2001 69. Ethylbenzene N ND ppb 700 700 2001 70. Styrene N ND ppb 100 100 2001 71. Tetrachloroethylene N ND ppb 0 5 2001 72. 1,2,4Trichlorobenzene 73. 1,1,1- Trichloroethane N ND ppb 70 70 2001 N ND ppb 200 200 2001 74. 1,1,2- Trichloroethane N ND ppb 3 5 2001 75. Trichloroethylene N ND ppb 0 5 2001 76. TTHM N ND ppb 0 100 2001 [Total trihalomethanes] 77. Toluene N ND ppb Likely Source of Contamination 1000 2001 78. Vinyl Chloride N ND ppb 2 2001 Runoff/leaching from insecticide used on apples, potatoes and tomatoes Runoff from landfills; discharge of waste chemicals Discharge from wood preserving factories Herbicide runoff Herbicide runoff Runoff/leaching from insecticide used on cotton and cattle Volatile Organic Contaminants 79. Xylenes N ND ppb 1000 0 10000 10000 2001 There are many, many tools that can be used to manage groundwater resources. Listed below are several: Zoning: Regulations used to segregate different, and possibly conflicting, activities into different areas of a community. ND/Low-High 52. Oxamyl [Vydate] Management Tools for Groundwater Protection Discharge from factories; leaching from gas storage tanks and landfills Discharge from chemical plants and other industrial activities Discharge from chemical and agricultural chemical factories Discharge from industrial chemical factories Discharge from industrial chemical factories Discharge from industrial chemical factories Discharge from industrial chemical factories Discharge from industrial chemical factories Discharge from industrial chemical factories Discharge from pharmaceutical and chemical factories Discharge from industrial chemical factories Discharge from petroleum refineries Discharge from rubber and plastic factories; leaching from landfills Leaching from PVC pipes; discharge from factories and dry cleaners Discharge from textilefinishing factories Discharge from metal degreasing sites and other factories Discharge from industrial chemical factories Discharge from industrial degreasing sites and other factories By-product of drinking water chlorination Discharge from petroleum factories Leaching from PVC piping discharge from plastics factories Discharge grom petroleum factories; discharge from chemical factories Unregulated Contaminants These are contaminants that some systems are required to monitor for but which EPA has not set MCLs. Contaminant Level Unit Date Contaminant Level Unit Date Detected Measurement Sampled Detected Measurement Sampled 1. Chloroform ND ppb 1997 1. Aldrin ND ppb 1997 2. BromodichloroND ppb 1997 2. Butachlor ND ppb 1997 methane 3. ChlorodibroND ppb 1997 3. Carbaryl ND ppb 1997 methane 4. Bromoform ND ppb 1997 4. Dicamba ND ppb 1997 5. m ND ppb 1997 5. Dieldrin ND ppb 1997 Dichlorobenzene 6. 1,1ND ppb 1997 6. 3-Hydroxycarbofuran ND ppb 1997 Dichloropropene 7. 1,1ND ppb 1997 7. Methomyl ND ppb 1997 Dichloroethane 8. 1,1ND ppb 1997 8. Metolachlor ND ppb 1997 Tetrachloroethane 9. 1,3ND ppb 1997 9. Metribuzin ND ppb 1997 Dichloropropane 10. ND ppb 1997 10. Propschlor ND ppb 1997 Chloromethane 11. ND ppb 1997 1. 1,2,4-Trimethylbenzene ND ppb 1997 Bromomethane 12. 1,2,3ND ppb 1997 2. 1,2,3-Trichlorobenzene ND ppb 1997 Trichloropropane 13. 1,1,1,2ND ppb 1997 3. n-Propylbenzene ND ppb 1997 Tetrachloroethane 14.Chloroethane ND ppb 1997 4. n-Butylbenzene ND ppb 1997 15. ND ppb 1997 5. Napthalene ND ppb 1997 2,2-Dichloropropane 16. ND ppb 1997 6. Hexachlorobutadiene ND ppb 1997 o-Chlorotoluene 17. ND ppb 1997 7. 1,3,5-Trimethylbenzene ND ppb 1997 p-Chlorotoluene 18. ND ppb 1997 8. p-Isopropyltoluene ND ppb 1997 Bromobenzene 19. 1,3ND ppb 1997 9. Isopropylbenzene ND ppb 1997 Dichloropropene 10. Tert-butylbenzene ND ppb 1997 1. Nickel ND-17 ppb 11. Sec-butylvenzene ND ppb 1997 12. Flurotrichloromethane ND ppb 1997 13. Dichlorodifluromethane ND ppb 1997 14. Bromochloromethane ND ppb 1997 Overlay Water Resource Protection Districts: These ordinances and bylaws are similar to zoning regulations in their goals of defining resources by mapping zones of contributing watershed or other sensitive area boundaries, and enacting specific legislation or zoning requirements for land uses and development within these key boundary areas. Aquifer Recharge Maps: Local Planning Commissions can participate in the protection of their ground water resources by utilizing aquifer recharge maps. Local officials need tools to adequately evaluate the ground water risks of a proposed development, and to regulate where risks are unacceptable. Aquifer recharge maps detail environmentally sensitive areas, and essentially outline the direct pathways to recharge or replenish our underground drinking water supplies. Prohibition of Some Land Uses: Some land areas are more suitable for some types of development. Prohibition of land uses based on land suitable issues such as soil types, slope, groundwater recharge areas, critical watershed areas, geologic hazard areas, etc., makes good sense, and can be a first step towards a comprehensive groundwater protection strategy. Special Permitting: The special permitting process can be used to regulate uses and structures that may potentially degrade water and land quality. Large Lot or Low Density Zoning: Large lot or low density zoning seeks to limit groundwater resource degradation by reducing the number of buildings within a groundwater protection area. Eliminating Septic Systems: By extending or developing a community sewage treatment system, septic system problems can be reduced. Transfer of Development Rights: A government entity prepares a plan that designates land parcels from which development rights can be transferred to other areas. This allows land uses to be protected (i.e. for a gas station) while assuring that these uses are outside sensitive areas. Growth Control/Timing: Growth controls are used to slow or guide a community’s growth, ideally in concert with its ability to support growth. One important component is in regard to groundwater’s carrying capacity. Performance Standards: This assumes that any given resource has a threshold, beyond which it deteriorates to an unacceptable level. Performance standards assume that most uses are allowable in a designated area, provided that the use or uses do not, and will not, overload the resource. With performance standards, it is important to establish critical threshold limits as the bottom line for acceptability. Underground Storage Tanks: Prohibit underground storage tank installation in groundwater and surface water management areas. Conservation Easements: Conservation easements allow for a limited right to use the land. Easements can effectively protect critical lands from development, and increase the value of surrounding properties. Purchase Lands: Many communities purchase selected parcels of land that are deemed significant for resource protection. The state of Utah and other organizations such as the Nature Conservancy are agencies and organizations that have such programs. Land trusts such as the Ogden Valley Land Trust are legally organized to manage and maintain such easements. Well Construction/Closure Standards: Penetrating the core or earth’s protective shell, wells become direct conduits to groundwater, standards for new well construction as well as identification can help protect underground water sources. Groundwater Management Practices: Management practices to protect groundwater may include: Impervious area recharge restrictions Artificial wetlands Grass lined channels Impoundment structures (ponds) Subsurface drains (tiles) Infiltration trenches Native tree and shrub plantings Pollutant control practices: Buffers Filter strips Undisturbed riparian, wetland, and drainage zones Pollution prevention practices: Soil nitrate testing Integrated pest management Manure testing Variable rate applications (fertilizers) Abandoned well closures Note: Much of this information came from “Know Your Watershed,” a nonprofit public/private partnership, and the “1999 Citizen Planner’s Guide to Subdivision Development” published by the Utah Leauge of Cities and Towns. |