56 Radon Potential Zone Map for the Lake Tahoe Area ......56 & &. 39° 07' 30" 120° 15' 04" 120°...

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& & & & & & & & & & & & & & & & & & & & & & & & & & & & & & & & & & & . . . . . . . . . . . . . . & & & & & & & & & & & & & & 5 6 & & & & & & & & & & & & & & . . . . . . . 39° 07' 30" 120° 15' 04" 120° 00' 04" 39° 22' 30" 39° 15' 00" 39° 07' 30" 39° 15' 00" 39° 22' 30" 120° 15' 04" 119° 52' 34" 38° 37' 30" 38° 37' 30" 38° 45' 00" 119° 52' 34" 39° 00' 00" 38° 52' 30" 38° 45' 00" 38° 52' 30" 39° 00' 00" Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Rockbound Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Rubicon Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Wrights Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Donner Lake Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Prosser Creek Reservoir Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Martis Creek Lake Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i ver T r uc k e e R i v er T r uc k e e R i v er T r uc k e e R i v er Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Lake Tahoe Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Truckee River Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Lake Aloha Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Cascade Lake Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Fallen Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Leaf Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Emerald Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Bay Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Echo Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Upper Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Blue Lake Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Silver Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Caples Lake Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens Sorensens South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe South Lake Tahoe Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Meyers Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Echo Lake Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Tahoe Vista Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Kings Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Beach Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Kirkwood Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Carnelian Bay Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Cedar Flat Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Emerald Bay Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Tahoma Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Meeks Bay Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Fallen Leaf Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Twin Bridges Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Strawberry Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Idlewild Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Homewood Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Sunnyside Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Tahoe City Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Lake Forest Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Alpine Meadows Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Olympic Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Valley Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee Truckee 80 89 89 28 267 89 50 88 88 89 50 89 50 C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia C alifornia N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada N ev ada El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California California Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Nevada County Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y Alpine C ount y El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County El D orad o County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Alpine County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Amador County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County Placer County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County El Dorado County RADON POTENTIAL ZONE MAP FOR THE LAKE TAHOE AREA, CALIFORNIA. SPECIAL REPORT 211 - PLATE 1 STATE OF CALIFORNIA - ARNOLD SCHWARZENEGGER, GOVERNOR THE NATURAL RESOURCES AGENCY - MIKE CHRISMAN, SECRETARY FOR RESOURCES DEPARTMENT OF CONSERVATION - BRIDGETT LUTHER, DIRECTOR CALIFORNIA GEOLOGICAL SURVEY JOHN G. PARRISH, PH.D., STATE GEOLOGIST Radon Potential Zone Map for the Lake Tahoe Area, California By Ronald K. Churchill, Ph.D. (PG #4265) April 2009 MAP USAGE AND LIMITATIONS This map identifies areas where geologic conditions are more likely to produce excessive indoor radon levels. The map is intended to be advisory only. It is intended to assist national, state and local governments and organizations in targeting their radon program activities and resources. This map is not intended for determining which buildings have excessive indoor radon levels. Besides geology, local variability in such factors as soil permeability, weather and climatic conditions, building design and condition, and building usage also influence indoor radon levels. Consequently, building-specific radon levels can only be determined by indoor radon testing. No warranty as to actual radon levels at specific sites is expressed or implied by this map or the accompanying report. The U.S. Environmental Protection Agency (EPA) recommends that all homes be tested for radon whatever their geographic location. Homes with elevated radon levels have been found in all zones within the Lake Tahoe area. The U.S. EPA recommends that action be taken to reduce radon in homes with an average annual level higher than four picocuries per liter (4 pCi/l). California Department of Public Health, Radon Program, Telephone: (916) 449-5674 Email: [email protected] California Geological Survey Telephone: (916) 323-7696 Email: [email protected] Additional information about radon can be found at the following websites: California Department of Public Health, Radon Program: http://www.cdph.ca.gov/healthinfo/environhealth/Pages/Radon.aspx California Geological Survey-Mineral Resources Program: http://www.conservation.ca.gov/cgs/minerals/hazardous_minerals/radon/Pages/Index.aspx U.S. EPA: http://www.epa.gov/iaq/radon/ Questions regarding this map should be directed to: Copyright © 2009 by the California Department of Conservation, California Geological Survey. All rights reserved. No part of this publication may be reproduced without written consent of the California Geological Survey. A PDF version of the radon zone maps is available from the California Department of Conservation, California Geological Survey, 801 K Street, MS 08-38, Sacramento, CA 95814-3531. 1 0 1 2 3 Miles Scale: 1:100,000 2 0 2 4 6 Kilometers Radon Zone Definitions High Potential For Indoor Radon Levels Above Four Picocuries Per Liter** Moderate Potential For Indoor Radon Levels Above Four Picocuries Per Liter** Low Potential For Indoor Radon Levels Above Four Picocuries Per Liter** Base Map Layers ** The U.S. Environmental Protection Agency (EPA) recommends four picocuries per liter as the action level for radon reduction. Very High Potential For Indoor Radon Levels Above Four Picocuries Per Liter** Unknown Potential For Indoor Radon Levels Above Four Picocuries Per Liter** Study Area Location US Route Secondary Route/ Street State Boundary . . . . . . . River Stream Lake County Boundary Interstate Route 3 4 GIS Development and Map Layout by Milton Fonseca $ $ $ $ $ $ $ State Route Map Sources (Digital GIS Layers): Hydrography - GDT, April 2004 Roads - GDT, April 2004

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Prosser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek ReservoirProsser Creek Reservoir

Martis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek LakeMartis Creek Lake

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Lake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake AlohaLake Aloha

Cascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade LakeCascade Lake

FallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenFallenLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLeafLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLake

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SilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverSilverLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLakeLake

Caples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples LakeCaples Lake

SorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensensSorensens

South Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake TahoeSouth Lake Tahoe

MeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyersMeyers

Echo LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho LakeEcho Lake

Tahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaTahoe VistaKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsKingsBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeachBeach

KirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwoodKirkwood

Carnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian BayCarnelian Bay

Cedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar FlatCedar Flat

Emerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald BayEmerald Bay

TahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahomaTahoma

Meeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks BayMeeks Bay

Fallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen LeafFallen Leaf

Twin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin BridgesTwin Bridges

StrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberryStrawberry

IdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewildIdlewild

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SunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnysideSunnyside

Tahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe CityTahoe City

Lake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake ForestLake Forest

Alpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine MeadowsAlpine Meadows

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Alpine County

Alpine County

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RADON POTENTIAL ZONE MAP FOR THE LAKE TAHOE AREA,CALIFORNIA. SPECIAL REPORT 211 - PLATE 1

STATE OF CALIFORNIA - ARNOLD SCHWARZENEGGER, GOVERNORTHE NATURAL RESOURCES AGENCY - MIKE CHRISMAN, SECRETARY FOR RESOURCES

DEPARTMENT OF CONSERVATION - BRIDGETT LUTHER, DIRECTORCALIFORNIA GEOLOGICAL SURVEYJOHN G. PARRISH, PH.D., STATE GEOLOGIST

Radon Potential Zone Map for the Lake Tahoe Area,California

By

Ronald K. Churchill, Ph.D.(PG #4265)

April 2009

MAP USAGE AND LIMITATIONS

This map identifies areas where geologic conditions are more likely to produceexcessive indoor radon levels. The map is intended to be advisory only. It isintended to assist national, state and local governments and organizations intargeting their radon program activities and resources. This map is not intendedfor determining which buildings have excessive indoor radon levels. Besidesgeology, local variability in such factors as soil permeability, weather and climaticconditions, building design and condition, and building usage also influenceindoor radon levels. Consequently, building-specific radon levels can only bedetermined by indoor radon testing. No warranty as to actual radon levels atspecific sites is expressed or implied by this map or the accompanying report.

The U.S. Environmental Protection Agency (EPA) recommends that all homes betested for radon whatever their geographic location. Homes with elevated radonlevels have been found in all zones within the Lake Tahoe area. The U.S. EPArecommends that action be taken to reduce radon in homes with an averageannual level higher than four picocuries per liter (4 pCi/l).

California Department of Public Health, Radon Program,Telephone: (916) 449-5674 Email: [email protected]

California Geological SurveyTelephone: (916) 323-7696Email: [email protected]

Additional information about radon can be found at the following websites:

California Department of Public Health, Radon Program:http://www.cdph.ca.gov/healthinfo/environhealth/Pages/Radon.aspxCalifornia Geological Survey-Mineral Resources Program:http://www.conservation.ca.gov/cgs/minerals/hazardous_minerals/radon/Pages/Index.aspxU.S. EPA: http://www.epa.gov/iaq/radon/

Questions regarding this map should be directed to:

Copyright © 2009 by the California Department of Conservation,California Geological Survey. All rights reserved. No part of this publication may be reproduced without written consent ofthe California Geological Survey.A PDF version of the radon zone maps is available fromthe California Department of Conservation, California Geological Survey, 801 K Street, MS 08-38, Sacramento, CA 95814-3531.

1 0 1 2 3

Miles

Scale: 1:100,000

2 0 2 4 6

Kilometers

Radon Zone Definitions

High Potential For Indoor Radon LevelsAbove Four Picocuries Per Liter**

Moderate Potential For Indoor Radon Levels Above Four Picocuries Per Liter**

Low Potential For Indoor Radon Levels Above Four Picocuries Per Liter**

Base Map Layers

** The U.S. Environmental Protection Agency (EPA) recommends four picocuries per liter as the action level for radon reduction.

Very High Potential For Indoor Radon LevelsAbove Four Picocuries Per Liter**

Unknown Potential For Indoor Radon Levels Above Four Picocuries Per Liter**

Study Area Location

US Route

Secondary Route/ Street

State Boundary

.................................................

River

Stream

Lake

County Boundary

Interstate Route34

GIS Development and Map Layout by Milton Fonseca

$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ State Route

Map Sources (Digital GIS Layers):

Hydrography - GDT, April 2004Roads - GDT, April 2004