Southern Indiana Gas and Electric Company (SIGECO) tau tsim lub vev xaib no rau lub hom phiaj ntawm kev tshaj tawm cov ntaub ntawv raws li EPA's Supplemental Effluent Limitations Guidelines ntawm 40 CFR Part 423.19. Thov xa txhua yam lus nug rau CCR_Inquiries@centerpointenergy.com.​​