환경과학원은 그 근거로 비료공장인 금강농산 사업장 내부와 장점마을에서 발암물질로 알려진 '다환방향족탄화수소류'와 '담배 특이 니트로사민'이 검출된 점을 제시했다.
The National Institute of Environmental Research suggested that "polycyclic aromatic hydrocarbons" and "tobacco-specific nitrosamines," known as carcinogens, were detected inside the Geumgang Agricultural Plant, which is a fertilizer factory, and in Jangseong Village.