Table 3.

Site and activity specific carcinogenic and noncarcinogenic health risks of PCBs, DDTs, mercury (Hg), and lead (Pb) for indigenous people of Chukotka in 2001.

Indicator	Value	Carcinogenic Risk (CR)	Noncarcinogenic Risk (HQ)
PCBs (Aggregate of 15 Congeners)
Occupational activity, the village of Uelen (males only)	Traditional subsistence, n = 37	1.1 × 10−3 [9.3 × 10−5−2.0 × 10−3]	1.78 [0.16–3.40]
	Other occupations, n = 82	2.4 × 10−4 [2.1 × 10−5−4.6 × 10−4]	0.40 [0.04–0.77]
Remoteness from district centre	The village of Uelen (740 km), n = 251	2.3 × 10−4 [1.0 × 10−5−4.6 × 10−4]	0.39 [0.02–0.77]
	The village of Kanchalan (60 km), n = 360	3.8 × 10−5[0.0−1.0 × 10−4]	0.06 [0.0–0.17]
DDTs (Aggregate of DDT and its Four Metabolites)
Occupational activity, the village of Uelen (males only)	Traditional subsistence, n = 37	2.4 × 10−5[7.3 × 10−6−4.0 × 10−5]	0.0014 [0.0004–0.0024]
	Other occupations, n = 82	1.9 × 10−5 [2.9 × 10−6−3.5 × 10−5]	0.0011 [0.0002–0.0020]
Remoteness from district centre	The village of Uelen (740 km), n = 251	1.9 × 10−5 [2.0 × 10−6−3.5 × 10−5]	0.0011 [0.0001–0.0021]
	The village of Kanchalan (60 km), n = 360	3.9 × 10−6[0.0−9.8 × 10−6]	0.0002 [0.0–0.0005]
Lead
Occupational activity, the village of Uelen (males only)	Traditional subsistence, n = 37	2.4 × 10−6 [1.3 × 10−6 -3.6 × 10−6]	0.08 [0.03–0.14]
	Other occupations, n = 82	1.9 × 10−6 [6.5 × 10−7 -3.1 × 10−6]	0.06 [0.02–0.09]
Mercury
Occupational activity, the village of Uelen (males only)	Traditional subsistence, n = 37	-	1.21 [0.66–1.76]
	Other occupations, n = 82	-	0.93 [0.35–1.51]
Remoteness from district center	The village of Uelen (740 km), n = 251	-	0.89 [0.31–1.47]
	The village of Kanchalan (60 km), n = 360	-	0.27 [0–0.68]