5.5. PCSR 02-13-2007 - Laserfiche WebLink

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Tiller Corporation Elk River and Livonia Quarries Noise Assessment . 1.0 Table of Contents INTR 0 D U CTI ON............................................ ................................................................. 1 1.1. Objectives of this Report................................................................................................. 1 1.2. Minnesota Noise Standards............................................................................................. 1 1.3. Organization of this Report... ......... ..................... ............. ..... ............. ......... ........ ..... ....... 1 2.0 ASSUMPTIONS ON MINING ACTIVITy.................................................................... 2 2.1. Livonia Mining Operation.. .......... .......................... ..... ........ ............. ...... ............... .......... 2 2.1.1. 2006 Operations.................................................................................... ................... 2 2.1.2. 2007 and Future Operations .................................................................................... 2 2.2. Elk River Mining Operation............................................................................................ 2 2.2.1. 2006 Operations.... ..... ......... .............. ...... .......... ............... ......... ............................... 2 2.2.2. 2007 and Future Operations .................................................................................... 6 2.3. Elk River Wash Plant Facility ..........................................................................,.............. 6 2.3.1. 2006 Operations.... .............. ........................ ................... ........... ......................... ...... 6 2.3.2. 2007 and Future Operations .................................................................................... 6 3.0 NOISE MONITORING PROGRAM ............................................................................10 3.1. 3.2. 4.0 Noise monitoring locations and results ......................................................................... 10 Comparison of Monitored and Modeled Levels............................................................ 11 PREDICTION 2007 AND FUTURE NOISE LEVELS................................................ 13 . 4.1. Modeling methodology and assumptions...................................................................... 13 4.2. Livonia Mining Operation .......... ........... ........ ...... ................. ................. ................ ........ 13 4.3. Elk River Mining Operation ................. ...... ......................... ........ ........... ......... .............. 15 4.4. Elk River Wash Plant Facility ....................................................................................... 17 5.0 SUMMARY OF FINDINGS AND RECOMMENDATIONS...................................... 19 5.1. Sound Levels Associated with 2006 Operations ........................................................... 19 5.1.1. Livonia Mining Operation...... ........................ ........ .............. ................... ........ ...... 19 5.1.2. Elk River Mining Operation.... ............ ............... ........... ............... ......................... 19 5.1.3. Elk River Wash Plant Facility ...............................................................................19 5.2. Estimated Sound Levels Associated with 2007 Operations .......................................... 19 5.2.1. Livonia Mining Operation ....... ........... ........ .......... ....... ......... ........ ..... ...... ........ ...... 19 5.2.2. Elk River Mining Operation ........... ........ ............ .......................... ........... .............. 19 5.2.3. Elk River Wash Plant Facility ............................................................................... 20 5.3. Estimated Sound Levels Associated with Future Operations........................................ 20 5.3.1. Livonia Mining Operation............. .............. ............. .......................... ...... ............. 20 5.3.2. Elk River Mining Operation........ ....... ........................................ ........ ............. ...... 20 5.3.3. Elk River Wash Plant Facility ...............................................................................20 5.4. Concluding Comment.................................................................................................... 20 . David Braslau Associates, Inc.