Comisión Sonora-Arizona - Comités de Agua y Medio Ambiente Arizona-Mexico Commission – Water and Environment Committees 12/4/2009 Hans Huth ADEQ – Oficina de Protección Ambiental Fronteriza Caracterización de Calidad de Agua en la Cuenca del Río Santa Cruz Water Quality Characterization of the Santa Cruz River Watershed

NIWTP Rio Rico Tucson

300, MGD 20, MGD 0.74 MGD MGD NIWTP

Periodo de Monitoreo Period of Monitoring Día de Notificación Date of Notification Contaminante Contaminant 10/200812/11/2008Cadmio 1/20093/6/2009 Cadmio, cobre, mercurio 2/20094/13/2009 Cadmio, cobre, cianuro 3/20095/5/09Cadmio 4/20096/25/09Cadmio 6/20097/29/09Cadmio 8/20099/30/09 Cadmio, cianuro 9/200910/21/09 Notificación de CILA sobre la transmisión de metales y cianuro IBWC notifications regarding passthrough of metals and cyanide 10/2008 – 9/2009

Monitoreando el Emisor Central al norte de la frontera internacional Monitoring the International Outfall Interceptor north of the international border

0.041 Analysis for Cyanide, August, hour Composite Samples Date

0.015 Analysis for Cadmium, August, hour Composite Samples Date

Analysis for Cadmium, August, hour Composite Samples Date

Muestra Sample Resultado (mg/l) Results (mg/l) GiroBusiness 10/28/ Recubrimientitos metálicos por procesos electrónicos. Metal recovery via electronic processes. 11/14/2008 < 0.75 Manufactura de componentes y conectores industrial, militar, y aerospacial. Manufacturing of industrial, military, and aerospace components and connectors. 10/28/2008 < 0.75 Ensamble de dispositivos médicos utilizados por hospitales y clínicas. Manufacture of medical mechanisms used by hospitals and clinics. 11/10/2008 < 0.75 Ensamble de componentes electrónicos. Manufacture of electronic components. 4/5/2009 < 0.75 Ensamble de componentes electrónicos. Manufacture of electronic components. 10/30/ Fabricación de puertas para garaje. Manufacture of garage doors. NOM-002-SEMARNAT-1996 : Norma para muestra compuesta de 24 horas : 0.75 mg/l; Standard for 24 hour composite sample: 0.75 mg/l

Entrada Headworks

Planta Internacional de Tratamiento de Aguas Residuales Nogales International Wastewater Treatment Plant Monitoreos en el punto de entrada de aguas residuales. Monitoring at the headworks

0.015 Analysis for Cadmium, August, hour Composite Samples Date

~2 millas al norte de la descarga ~2 miles downstream of discharge

Periodo deMonitoreo Period of Monitoring Día de Notificación Date of Notification Contaminante Contaminant 10/200812/11/2008Cadmio 1/20093/6/2009 Cadmio, cobre, mercurio 2/20094/13/2009 Cadmio, cobre, cianuro 3/20095/5/09Cadmio 4/20096/25/09Cadmio 6/20097/29/09Cadmio 8/20099/30/09 Cadmio, cianuro 9/200910/21/09 Notificación de CILA sobre la transmisión de metales y cianuro IBWC notifications regarding passthrough of metals and cyanide 10/2008 – 9/2009

Sitio Site A&Wedw, PBC, AgL

Fecha Date Total Cd (ug/l) Dis. Cd (ug/l) Dures a Hardness a Ca+Mg (ppm) Norma Standard (ug/l) Excedencia Excedance 7/31/07ND No 10/30/07ND No 2/26/08ND No 4/30/ No 7/29/ * ND No 10/28/08ND No 1/26/ ND No 4/28/ No 7/28/ Sí (Yes) 10/27/ Si (Yes) * duplicate for total outside of 10% tolerance for this sample + near detection limit threshold a Hardness (mg/L CaCO3) = 2.497*[Ca, mg/L] *[Mg, mg/L] ND = Non-detect Cadmio / Cadmium Monitoreo de FOSCR / FOSCR Monitoring 7/2007 – 10/2009

Fecha Date Total Cd (ug/l) Dis. Cd (ug/l) Dures a Hardness a Ca+Mg (ppm) Norma Standard (ug/l) Excedencia Excedance 7/31/ * No 10/30/ No 2/26/ No 4/30/ * No 7/29/ * No 10/28/08ND No 1/26/ No 4/28/ * No 7/28/ * No 10/27/ * No * duplicate for total outside of 10% tolerance for this sample + near detection limit threshold a Hardness (mg/L CaCO3) = 2.497*[Ca, mg/L] *[Mg, mg/L] ND = Non-detect Cobre / Copper Monitoreo de FOSCR / FOSCR Monitoring 7/2007 – 10/2009

Arroyo Nogales

A&Ww, PBC Sitio Site

Fecha Tot Cd (ug/l) Dis Cd (ug/l) Tot Cu (ug/l) Dis Cu (ug/l) Tot Pb (ug/l) Dis Pb (ug/l) Tot Zn (ug/l) Dis Zn (ug/l) 7/31/07NDND NDNDND 10/30/07NDND NDNDNDND 2/26/08NDND3.06.6NDNDNDND 4/30/08NDND3.0 NDNDNDNDND 7/29/ NDND81ND 10/28/08NDNDNDND NDNDNDND 1/26/09NDND ND56ND 4/28/09NDNDNDNDNDNDNDND 7/28/09NDND2.0 ND NDNDNDND 10/27/09NDND2.0 ND NDNDND Cadmio, Cobre, Plomo, Zinc Cadmium, Copper, Lead, Zinc Monitoreo de FOSCR / FOSCR Monitoring 7/2007 – 10/2009

Arizona-Sonora

A&Ww, FC, FBC, DWS, AgI, AgL Sitio Site

Fecha Date Tot. Cd (ug/l) Dis. Cd (ug/l) Tot. Cu (ug/l) Dis. Cu (ug/l) 7/31/07ND 2.8 ND 10/30/07ND 2/26/08ND 3.6 4/30/08ND 7/29/08ND /28/08ND 1/26/09ND 4/28/09Sin flujo 7/28/09Sin flujo 10/27/09Sin flujo Cadmio y Cobre / Cadmium and Copper Monitoreo de FOSCR / FOSCR Monitoring 7/2007 – 10/2009 No flow

Gracias por su atención Thank you for your attention Hans Huth Hidrólogo, M.S. Departamento de Calidad Ambiental de Arizona (ADEQ) Oficina de Protección Ambiental Fronteriza (OBEP) Hans Huth Senior Hydrologist Arizona Department of Environmental Quality (ADEQ) Office of Border Environmental Protection (OBEP)