74 @ The Containment of Underground Nuclear Explosions Figure 4-10—Locations Monitored With Thermoluminescent Dosimeters (TLDs) L Nevada i / \ Wells Winnemucca Pyramid Lake 1 Lake Reno yA ; Ely ce Tahoe ( ° ° Tonopah Mono e cms Lake ? i i Alamo © St. George Bishop hy Cedar : D ° CIty @ Arizona edly A\ Ss Lake Mead Bakersfield Barstow “yy.% 0 50 =| Scale in Miles One hundred thirty locations are monitored with TLDs. All TLDs are checked every 3 months for absorbed radiation. SOURCE: Modified from Environmental Protection Agency. ries of the test site has ever had detectable levels of radioactivity attributable to the nuclear testing program. An independenttest of water samples from around thetest site was conducted by Citizen Alert groundwater contamination offsite of the Nevada TestSite. Citizen Alert found no detectable levels oftritium deployed for each test, 2) the onsite monitoring system run by DOE,and 3) the offsite monitoring system run by EPA, forms a comprehensive detection system for radioactive material. There is (Reno, Nevada) at 14 locations (table 4-3). or fission products in any of their samples. With- standing any major change in the watertable, there currently appears to be no problem associated with MONITORING CAPABILITY The combination of: 1) the monitoring system