Middle Gila AMRC000855 5,460 1,105 Middle Gila Water Quality Assessments - 1 Middle Gila Water Ephemeral Ephemeral 0 10 1,210 6,830 Intermittent Intermittent Non-perennial Non-perennial 0 240 165 10,320 Estimated Surface Water Resources in the Middle Gila Watershed Resources SurfaceEstimated Water Additional Water Resources Located on Tribal Lands – Not Assessed Lands – Not on Tribal Located Resources Water Additional Perennial Perennial Perennial Perennial 15050100 Gila – Queen Creek Drainage Area (from San Carlos Reservoir to Salt River) to San Carlos Reservoir Gila – Queen Creek Drainage Area (from 15050100 Gila River) Dam to Reef Granite Creek Drainage Area (from Salt – Cave 15060106B Dam) Rock Painted to Salt River Drainage Area (from Rock Gila – Painted 15070101 Area Drainage River Agua Fria 15070102 Drainage Area River Hassayampa 15070103 Drainage Area River Centennial 15070104 Stream miles Stream Lands On Tribal Lake acres Lake Lands On Tribal Stream miles Stream Lake acres Lake These drainage areas and the surface waters assessed as “attaining” or “impaired” are illustrated on the following watershed watershed on the following These drainage areas and the surface assessed as “attaining” or “impaired” are illustrated waters and Technical Assessment Methods these assessments are described in the “Surface complete Water used to map. Methods Support” document. The Middle Gila Watershed can be separated into the following drainage areas (subwatersheds): the following into can be separated The Middle Gila Watershed Assessments An estimate of surface water resources in the Middle Gila Watershed is provided in the following table. Waters on Tribal lands on Tribal table. Waters in the following is provided in the Middle Gila Watershed resources of surfaceAn estimate water separately. those statistics are shown ADEQ; therefore, assessed by are not This area receives little rainfall (approximately 13 inches a year); therefore, surface water flow is primarily attributed to is primarily attributed flow surface therefore, 13 inches water a year); little rainfall (approximately This area receives flows. and agricultural return treatment plants, wastewater effluent from upstream impoundments, releases from Water Resources Water Elevations range from 7,400 feet (above sea level) to 1,100 feet at Painted Rocks Reservoir. Most of the watershed is below is below of the watershed Most Reservoir. Rocks at Painted 1,100 feet to sea level) (above 7,400 feet range from Elevations aquatic communities. warmwater with Sonoran Desert flora and fauna and in elevation, 5,000 feet on quality problems identify water may special investigations however, on perennial waters; focuses Ambient monitoring and at 1:100,000 miles and acres are based on USGS digitized hydrology Estimated ephemeral waters. and even intermittent the nearest 5 miles or 5 acres. to been rounded have The Phoenix metropolitan area, located in this 12,250 square mile watershed, consists of more than three million people consists of more than three in this 12,250 watershed, square mile area, located The Phoenix metropolitan the Middle Gila is Land ownership in States. areas in the United growing be one of the fastest continues to (2000 census) and area, irrigated Within the metropolitan land, and 4% tribal land. land, 4% state land, 25% private 65% federal approximately: grazing is the primary land the urbanized area, livestock urbanization. Outside rapidly being displaced by agriculture uses are concentration south of Prescott. with more this watershed, has occurred across abandoned) now use. Mining (primarily Watershed Description Watershed Painted to in the east Dam (San Carlos Reservoir) Coolidge drainage area below Gila River encompasses the This watershed Reef Granite above drainage Salt River and the River, the San Pedro River, the Santa Cruz It excludes Dam in the west. Rocks Watershed) of the Salt (instead Dam is included in this watershed Reef Granite drainage area below Dam. The Salt River Salt River lower the rest of the from disconnect the system hydrologically at the dam and diversions because the canals drainage. Middle Gila Watershed Gila Middle M Middle Gila Middle Gila Water Quality Assessments - 2 ABOVE BIGBUGCREEK cury, selenium,zinc um, chromium, copper, lead,manganese,mer (7-8) Antimony, boron, cadmi beryllium, arsenic, 09512500 BELOW USGSGAGE Parameter Dissolved Selenium deposits Arsenic Bottom oxygen A Site Name(s) onitoring Summary Sampling period:8/11/2011 -5/23/2012 GUA FRIARIVER 9.8 Miles 15070102-023 Sycamore Creek-Bishop DWS -Inconclusive •FC-Attaining • FBC -Impaired AGI -Attaining •AGL - Attaining •AWW -Impaired Metal Samples Applicable Standard < 50%fines 6.0 mg/L 10 ug/L 2 ug/L Impairment MGAFR087.35 MGAFR087.06 Add seleniumto the303(d)list. Site ID# Status - 12/28/2011 5/23/2012 8/11/2011 10/2/2012 8/11/2011 8/11/2011 - Exceedances E. coli(2010) Date Kjeldahl nitrogen nitrogen, phosphorus,total (7-8) Ammonia,nitrite/nitrate, 100711 100710 Nutrients &Related Samples DEQ # Sampling Agency 4.9 mg/L 4.4 ug/L 3.8 ug/L 15 ug/L Result 57% 61% ADEQ ADEQ due to low flow. AWW isattaining-low dissolved oxygen 4 samples. AWW isimpairedwith2exceedances in 4 samples. DWS isinconclusive with1exceedance in AWW isinconclusive. deposits, biocriteria SSC, total dissolved solids,bottom (2-8) Dissolved oxygen, E.coli Designated use support comments Designated usesupport Ambient Monitoring Ambient Monitoring Other Samples Category 5 Category Purpose AMRC000856 Impaired , pH, Middle Gila AMRC000857 exceedances in 8 samples exceedances Middle Gila Water Quality Assessments - 3 Middle Gila Water (2010). There were no E. coli There were (2010). E. coli Monitoring Recommendations Monitoring samples under critical conditions. Impairment Discussion Bottom deposits, arsenic deposits, Bottom None None None more E. coli - the ex more arsenic Collect in supportCollect more samples samples due to of TMDL development. Rule is updated. Identification Impaired Waters deposit TMDL once the a bottom ceedance. Initiate High Priority Add selenium to the 303(d) list. Reach remains impaired for for remains impaired the 303(d) list. Reach selenium to Add (4 aggregated), but no information was available as to whether the samples were collected under critical conditions. Collect collected the samples were whether as to available was no information but (4 aggregated), Missing Core Parameters Missing Core Distribution Missing Seasonal Enough Low Not Limits Lab Detection Exceedances Needing More Samples to Assess Samples to Needing More Exceedances Data Gaps and Monitoring Needs Monitoring and Gaps Data M Middle Gila Middle Gila Water Quality Assessments - 4 Data GapsandMonitoring Needs cury, selenium,zinc um, chromium, copper, lead,manganese,mer (3-4) Antimony, boron, cadmi beryllium, arsenic, GULCH ABOVE CHAPARRAL Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess A Priority Site Name(s) Low onitoring Summary Sampling period:9/2/2014 -4/14/2015 GUA FRIARIVER 17.777 Miles 15070102-031B State Route 169 -Yarber Wash AGI -Attaining •AGL - Attaining •AWW -Attaining Metal Samples DWS -Attaining •FC-Attaining •FBC -Attaining Good coreparameter coverage. Use Support MGAFR110.01 Site ID# - No Exceedances - Selenium, mercury (dissolved) Selenium, mercury None None None Kjeldahl nitrogen nitrogen, phosphorus,total (3-4) Ammonia,nitrite/nitrate, 106462 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency ADEQ bottom deposits SSC, fluoride, total dissolved solids, (1-4) Dissolved oxygen, E.coli Ambient Monitoring Other Samples Category 1 Category Purpose AMRC000858 Attaining alluses , pH, Middle Gila Impaired AMRC000859 Purpose Category 5 Other Samples (0) None Middle Gila Water Quality Assessments - 5 Middle Gila Water Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related (0) None Impairment Discussion None All core parameters All core parameters N/A Ammonia (2004) Ammonia Status Site ID # Site Remains impaired for ammonia (2004). TMDL development ongoing. ammonia (2004). TMDL development impaired for Remains Impairment Impairment TMDL sampling completed. Metal Samples Metal 15060106B-0050 26.9 Acres LVORD PARK LAKE PARK LVORD FC - Inconclusive • PBC - Inconclusive • AWW - Impaired • AWW • PBC - Inconclusive FC - Inconclusive Sampling period: No samples onitoring Summary onitoring Site Name(s) Site Priority

Medium

A

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection N/A (0) None Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 6 Data GapsandMonitoring Needs (0) None N/A Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess A Medium Priority Site Name(s) onitoring Summary Sampling period:Nosamples FC -Inconclusive •FBC-Inconclusive •AWW -Impaired RNETT CREEK 11.1 Miles 15050100-1818 Headwaters -QueenCreek Metal Samples Remains impaired for copper(2010). ofQueenCreekTMDLproject. Includedaspart Collect samples in support ofTMDLdevelopment.Collect samplesinsupport Impairment Site ID# Status Copper (2010) N/A All coreparameters All coreparameters None Impairment Discussion (0) None Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency (0) None Other Samples Category 5 Category Purpose AMRC000860 Impaired Middle Gila Inconclusive AMRC000861 Purpose Category 3 Other Samples Data Sharing Partnership (6) Dissolved oxygen, pH oxygen, (6) Dissolved Middle Gila Water Quality Assessments - 7 Middle Gila Water USGS Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 110022 (5) Ammonia, nitrite/nitrate, (5) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen None manganese Boron, lead manganese, copper, Boron, None No Exceedances - Site ID # Site MGAZCX07DBB AGI - Inconclusive • AGL - Inconclusive • AGL - Inconclusive AGI Use SupportUse Collect core parameters to represent at least 3 seasons during an assessment period. represent at to Collect core parameters Metal Samples Metal

HUC boundary 15070102 - Gila River - HUC boundary 15070102 15070102-202 4.529 Miles RIZONA CANAL (15070102) CANAL RIZONA

Sampling period: 12/22/2010 - 12/14/2012 Sampling period: 12/22/2010 onitoring Summary onitoring Low Site Name(s) Site

Priority

A

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection ACDC TRIB NR ACDC HEARN RD AND RD, USGS ACOMA 333658112113200 (2-5) Antimony, arsenic, barium, beryllium, cad (2-5) Antimony, nickel, lead, mercury, copper, mium, chromium, thallium, zinc selenium, silver, Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 8 MINE BELOW PROVIDENCE Parameter (dissolved) (dissolved) Arsenic Copper Copper B Lead Lead Site Name(s) onitoring Summary Sampling period:1/29/2013 -8/3/2014 FC -Inconclusive •FBC-Inconclusive •AGI -Inconclusive IG BUGCREEK 23.3 Miles 15070102-034B FriaEugene Gulch-Agua River 2.5 ug/L@100 mg/Lhardness @ 150mg/Lhardness, @ 130 mg/Lhardness @ 130 Applicable Standard 11.2 ug/Lchronic 11.2 1300 ug/L(FBC) 1300 19.7 ug/Lacute 100 ug/L(AGL) 500 ug/L(AGL) 15ug/L(FBC) 30 ug/L(FBC) 80ug/L(FC) AGL -Inconclusive •AWW -Inconclusive Use Support MGBGB023.15 Site ID# 11/22/2013 11/22/2013 1/29/2013 7/19/2013 7/19/2013 7/19/2013 7/15/2014 7/15/2014 7/15/2014 8/17/2013 8/17/2013 8/17/2013 8/3/2014 8/3/2014 8/3/2014 Exceedances Date 109422 DEQ # 14 ug/L(median) 73 ug/L(max) Sampling Agency 1150 ug/L 1570 ug/L 1597 ug/L 254 ug/L 254 239 ug/L 86 ug/L* 663 ug/L 156 ug/L 245 ug/L 3.8 ug/L 69 ug/L 20 ug/L 89 ug/L 81 ug/L Result ADEQ in 9samples. AWW isinconclusive with1exceedance ceedance. AWW isinconclusive with1chronic ex- mial). *Not aFCexceedance with 2exceedances in9samples(bino 9 samples(binomial).FCisinconclusive FBC isinconclusive with4exceedances in mial). with 2exceedances in9samples(bino 9 samples(binomial).FBCisinconclusive AGL isinconclusive with4exceedances in to determine impairment. al). Aminimumof20samplesisneeded with 5exceedances in9samples(binomi 9 samples(binomial).FBCisinconclusive AGL isinconclusive with4exceedances in Designated use support comments Designated usesupport TMDL Monitoring Category 3 Category Purpose AMRC000862 Inconclusive - - - Middle Gila AMRC000863 Other Samples Other (1-6) Dissolved oxygen, pH, SSC oxygen, Dissolved (1-6) Middle Gila Water Quality Assessments - 9 Middle Gila Water , boron, manganese, mercury manganese, , boron, Monitoring Recommendations Monitoring Nutrients & Related Samples & Related Nutrients (2) Ammonia, nitrite/nitrate, nitrite/nitrate, (2) Ammonia, total phosphorus, nitrogen, Kjeldahl nitrogen Copper, lead, copper (dissolved), lead (dissolved), arsenic lead (dissolved), copper (dissolved), lead, Copper, E. coli oxygen, Dissolved E. coli oxygen, Dissolved Arsenic, mercury selenium, (dissolved), copper (dissolved) Collect more copper (total and dissolved), lead (total and dissolved) and arsenic samples due to the and arsenic samples due to and dissolved) lead (total dissolved), and (total Collect more copper during an assessment represent at least 3 seasons to Collect missing core parameters exceedances. period. Metal Samples Metal Priority Medium Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection Exceedances Needing More Samples to Assess to Needing More Samples Exceedances (6-10) Antimony, arsenic, beryllium, boron, Antimony, (6-10) lead, manganese, copper, chromium, cadmium, zinc selenium, mercury, Data Gaps and Monitoring Needs Monitoring Gaps and Data

M Middle Gila Middle Gila Water Quality Assessments - 10 Data GapsandMonitoring Needs mercury, nickel, selenium,silver, zinc cadmium, chromium, copper, lead,manganese, (1-5) Antimony, boron, barium,beryllium, arsenic, USGS 09514000 NEAR AVONDALE, AZ Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess B Priority Site Name(s) Low onitoring Summary Sampling period:5/15/2012 -5/22/2013 UCKEYE CANAL (15070101) 4.035 Miles 15070101-209 Gila River 15070103 -SouthExtension Canal-HUCboundry Metal Samples Good coreparameter coverage. Use Support MGBKCX28CCB AGI -Attaining •AGL - Attaining Site ID# No Exceedances None None None None Kjeldahl nitrogen nitrogen, phosphorus,total (2) Ammonia,nitrite/nitrate, 101494 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency ADEQ toxaphene tal dissolved solids,DDT metabolites, (2-5) Dissolved oxygen, E.coli TMDL Monitoring Other Samples Category 1 Category Purpose AMRC000864 Attaining alluses , pH,to- Middle Gila - - , pH, to AMRC000865 Purpose Attaining some uses Attaining Category 2 Other Samples TMDL Monitoring Designated use supportDesignated comments (2-6) Dissolved oxygen, E. coli oxygen, (2-6) Dissolved metabolites, solids, DDT tal dissolved toxaphene AGI is inconclusive with 6 exceedances in with 6 exceedances is inconclusive AGI 20 6 samples (binomial). A minimum of impair determine samples is required to ment. Middle Gila Water Quality Assessments - 11 Middle Gila Water ADEQ Result 1700 ug/L 1700 1600 ug/L 1600 1100 ug/L 1100 2600 ug/L 2000 ug/L 1300 ug/L Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 109082 (2) Ammonia, nitrite/nitrate, (2) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen Date Boron None None None Exceedances 5/16/2013 9/16/2013 2/26/2013 5/30/2012 8/22/2012 10/25/2012 Site ID # Site MGBKCX01DCD AGI - Inconclusive • AGL - Attaining • AGL - Inconclusive AGI Use SupportUse 1000 ug/L 1000 Collect more boron samples due to the exceedances. samples due to Collect more boron Applicable Standard Metal Samples Metal HUC boundary 15070103 - Hassayampa River Hassayampa - HUC boundary 15070103 15070103-090 3.905 Miles UCKEYE CANAL (15070103) CANAL UCKEYE Sampling period: 5/30/2012 - 9/16/2013 Sampling period: 5/30/2012 onitoring Summary onitoring Low Site Name(s) Site Priority

Boron B

Parameter Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection Exceedances Needing More Samples to Assess Needing More Samples to Exceedances NEAR TERMINUS (1-6) Antimony, arsenic, barium, beryllium, boron, (1-6) Antimony, lead, manganese, copper, cadmium, chromium, zinc selenium, silver, nickel, mercury, Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 12 Data GapsandMonitoring Needs mercury, nickel, selenium,silver, zinc cadmium, chromium, copper, lead,manganese, (1-4) Antimony, boron, barium,beryllium, arsenic, NIX DRAIN AT GAGE, BUCKEYE/LEN Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess B Priority Site Name(s) Low onitoring Summary Sampling period:5/14/2012 -5/22/2013 UCKEYE FEEDERCANAL 4.168 Miles 15070101-064 Unknown -GilaRiver Metal Samples Good coreparameter coverage. - Use Support MGB1CX34BAB AGI -Attaining •AGL - Attaining Site ID# No Exceedances None None None None Kjeldahl nitrogen nitrogen, phosphorus,total (2) Ammonia,nitrite/nitrate, 103407 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency ADEQ toxaphene tal dissolved solids,DDT metabolites, (1-4) Dissolved oxygen, E.coli TMDL Monitoring Other Samples Category 1 Category Purpose AMRC000866 Attaining alluses , pH,to- Middle Gila - - - Inconclusive AMRC000867 Purpose Category 3 Other Samples Ambient Monitoring (1) Dissolved oxygen, pH, total dis pH, total oxygen, (1) Dissolved solved solids solved Middle Gila Water Quality Assessments - 13 Middle Gila Water ADEQ Sampling Agency , copper, lead, mercury, (or mercury in fish tissue) lead, mercury, , copper, lead, mercury , copper, Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 100527 (0) None None copper (dis pH, cadmium (dissolved), oxygen, dissolved Zinc (dissolved), solved), E. coli solved), copper (dis pH, cadmium (dissolved), oxygen, dissolved Zinc (dissolved), E. coli solved), None No Exceedances AWW - Inconclusive AWW Site ID # Site MGCVE037.68 Use SupportUse Collect core parameters to represent at least 3 seasons during an assessment period. represent at to Collect core parameters Metal Samples Metal

Headwaters - Cave Creek Dam - Cave Headwaters 15060106B-026A 32.909 Miles AVE CREEK AVE

FC - Inconclusive • FBC - Inconclusive • AGL - Inconclusive - Inconclusive • AGL • FBC - Inconclusive FC - Inconclusive Sampling period: 11/19/2010 - 11/19/2010 Sampling period: 11/19/2010 onitoring Summary onitoring Low Site Name(s) Site

Priority

C

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection BELOW SEVEN SPRINGS BELOW (0) None Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 14 Data GapsandMonitoring Needs (1-3) Arsenic, boron, copper,(1-3) Arsenic, lead,manganese CREEK MOUTH NORTH OFMINERAL Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Parameter Copper C Lead Priority Site Name(s) Low onitoring Summary Sampling period:12/22/2010 -12/1/2011 EDAR CANYON (CEDAR CR) 11.552 Miles 15070102-053 Headwaters -Turkey Creek Metal Samples Applicable Standard least 3seasonsduringanassessment period. Collect morecopperandlead samplesdueto theexceedances. Collectcoreparameters to representat 1300 ug/L 1300 15 ug/L PBC -Inconclusive •AWE -Inconclusive Use Support MGCED000.25 Site ID# 12/22/2010 12/1/2011 7/10/2011 7/10/2011 Exceedances None Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) Copper, lead Date (0) None 102522 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency 42.66 ug/L 1410 ug/L 30.3 ug/L 295 ug/L Result ADEQ 3 samples(binomial). PBC isinconclusive with1exceedance in 3 samples(binomial). PBC isinconclusive with3exceedances in (0) None Designated use support comments Designated usesupport TMDL Monitoring Other Samples Category 3 Category Purpose AMRC000868 Inconclusive Middle Gila Impaired AMRC000869 Purpose Category 5 Other Samples (0) None Middle Gila Water Quality Assessments - 15 Middle Gila Water (2004). Developing TMDL report. (2004). Developing Sampling Agency E. coli Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related (0) None Impairment Discussion None All core parameters All core parameters N/A AWW - Impaired AWW Status Site ID # Site Impairment Impairment E. coli and low dissolved oxygen (2004) oxygen dissolved low E. coli and Remains impaired for dissolved oxygen and oxygen dissolved impaired for Remains TMDL sampling completed. Metal Samples Metal 15060106B-0300 12.5 Acres HAPARRAL PARK LAKE PARK HAPARRAL FC - Inconclusive • PBC - Inconclusive • AGI - Inconclusive • AGI • PBC - Inconclusive FC - Inconclusive Sampling period: No samples onitoring Summary onitoring Site Name(s) Site Priority

Medium

C

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection N/A (0) None Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 16 Data GapsandMonitoring Needs (0) None N/A Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess C Medium Priority Site Name(s) onitoring Summary Sampling period:Nosamples ORTEZ PARKORTEZ LAKE 2.0 Acres 15060106B-0410 FC -Inconclusive •PBC-ImpairedAGI -Impaired Metal Samples Conduct effectiveness monitoringConduct effectiveness TMDLstrategies after have beenimplemented. Remains impaired for dissolved oxygen andpH(2004).TMDLsamplingcompleted. Impairment Dissolved oxygen andpH(2004) Site ID# Status AWW -Impaired N/A All coreparameters All coreparameters None Impairment Discussion (0) None Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency (0) None Other Samples Category 5 Category Purpose AMRC000870 Impaired Middle Gila - - Inconclusive AMRC000871 Purpose Category 3 Other Samples Data Sharing Partnership (1) Solids Middle Gila Water Quality Assessments - 17 Middle Gila Water AGF Sampling Agency , boron, manganese, mercury, (or mercury in fish tissue) manganese, mercury, , boron, manganese, mercury, boron, Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 102757 (0) None None copper (dis pH, cadmium (dissolved), oxygen, dissolved Zinc (dissolved), solved), E. coli solved), copper (dis pH, cadmium (dissolved), oxygen, dissolved Zinc (dissolved), E. coli solved), None No Exceedances AWW - Inconclusive AWW Site ID # Site MGENC-B Use SupportUse Collect core parameters to represent at least 3 seasons during an assessment period. represent at to Collect core parameters Metal Samples Metal

15060106B-0510 8 Acres

NCANTO PARK LAKE PARK NCANTO FC - Inconclusive • PBC - Inconclusive • AGI - Inconclusive - Inconclusive • AGI • PBC - Inconclusive FC - Inconclusive Sampling period: 4/5/2011 - 4/5/2011 Sampling period: 4/5/2011 onitoring Summary onitoring Low Site Name(s) Site

Priority

E

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection MID LAKE (0) None Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 18 Data GapsandMonitoring Needs selenium, zinc chromium, copper, lead,manganese,mercury, (3) Antimony, boron, cadmium, beryllium, arsenic, MINE BELOW PROVIDENCE Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Parameter (dissolved) Copper E Lead pH Medium Priority Site Name(s) onitoring Summary Sampling period:7/19/2013 -9/10/2013 UGENE GULCH 3.06 Miles 15070102-768 Headwaters -BigBugCreek 44.7 ug/L@200mg/Lhardness Metal Samples Applicable Standard at least3seasons duringanassessment period. Collect more copper, lead and pH samples due to theexceedances. Collect core parameters to represent 15 ug/L PBC -Inconclusive •AWE -Inconclusive 6.5 SU Use Support MGEUG000.21 Site ID# 8/26/2013 8/26/2013 7/19/2013 8/26/2013 9/10/2013 9/10/2013 Exceedances Selenium Zinc (dissolved), pH,cadmium (dissolved), copper(dissolved) pH pH, copper(dissolved), lead (0) None Date 109502 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency 830 ug/L 142 ug/L 48 ug/L 83 ug/L 4.25 SU 4.5 SU Result ADEQ in 3samples. AWE isinconclusive with1exceedance exceedances in2samples(binomial). AWE andPBCareinconclusive with2 in 3samples(binomial). PBC isinconclusive with3exceedances (2) pH Designated use support comments Designated usesupport TMDL Monitoring Other Samples Category 3 Category Purpose AMRC000872 Inconclusive Middle Gila Impaired AMRC000873 Purpose Category 5 Other Samples (0) None Middle Gila Water Quality Assessments - 19 Middle Gila Water Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related (0) None Impairment Discussion None All core parameters All core parameters N/A SSC (2006/8) Remains impaired for SSC (2006/8) impaired for Remains Status Site ID # Site AGL - Inconclusive • AWW - Impaired • AWW - Inconclusive AGL Impairment Impairment Collect samples to support TMDL development. Collect samples to Metal Samples Metal

San Pedro - Mineral Creek - Mineral San Pedro 15050100-008 Miles 19.8 ILA RIVER

FC - Inconclusive • FBC - Inconclusive • AGI - Inconclusive • AGI • FBC - Inconclusive FC - Inconclusive Sampling period: No samples onitoring Summary onitoring High Site Name(s) Site

Priority

G

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection N/A (0) None Data Gaps and Monitoring Needs Data Gaps and Monitoring

M Middle Gila Middle Gila Water Quality Assessments - 20 Parameter Selenium Zinc (dis solved) Boron G - ILA RIVER 5.282 Miles 15070101-008 Hassayampa River -GillespieDam 363 ug/Lacute andchronic @ FC -Attaining •PBC-Attaining •AGI -Not Attaining Applicable Standard 380 mg/Lhardness 1000 ug/L AGL -Attaining •AWEDW -Not Attaining 2 ug/L Impairment Selenium (2004),Boron(1992) Status 10/25/2012 10/12/2011 10/25/2012 10/12/2011 12/21/2011 12/21/2011 3/13/2012 8/22/2012 3/13/2012 8/22/2012 8/22/2012 1/28/2013 2/26/2013 2/26/2013 1/28/2013 5/16/2013 5/16/2013 5/31/2012 5/31/2012 1/31/2014 1/31/2014 1/3/2014 1/3/2014 Exceedances Date 10.45 ug/L 1800 ug/L 1800 3200 ug/L 2600 ug/L 3400 ug/L 3300 ug/L 2800 ug/L 2800 ug/L 3300 ug/L 2000 ug/L 3700 ug/L 2100 ug/L 8.64 ug/L 7.61 ug/L 7.31 ug/L 420 ug/L 8.3 ug/L 7.9 ug/L 12 ug/L 12 19 ug/L 11 ug/L 15 ug/L 10 ug/L Result ance. AWEDW isinconclusive with1exceed- exceedances in11samples. AWEDW remainsnot attainingwith11 ances in11samples. AGI remainsnot attainingwith11exceed- Designated use support comments Designated usesupport Category 4A Category AMRC000874 Not attaining Middle Gila - , pH, AMRC000875 Purpose Other Samples TMDL Monitoring TMDL Monitoring Ambient Monitoring Ambient (6-17) Dissolved oxygen, E. coli oxygen, Dissolved (6-17) me solids, DDT dissolved SSC, total toxaphene tabolites, Middle Gila Water Quality Assessments - 21 Middle Gila Water ADEQ ADEQ ADEQ Sampling AgencySampling Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 100734 109062 109823 (6-7) Ammonia, nitrite/nitrate, (6-7) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen Impairment Discussion Zinc (dissolved) None None Arsenic, selenium, mercury (dissolved), arsenic lead (dis- (dissolved), solved) - Site ID # Site MGGLR174.91 MGGLR167.44 MGGLR170.67 Start effectiveness monitoring once TMDL strategies are implemented. Collect more dissolved zinc more dissolved Collect are implemented. Start once TMDL strategies effectiveness monitoring the exceedance. samples due to Metal Samples Metal Sampling period: 10/12/2011 - 5/16/2013 10/12/2011 Sampling period: onitoring Summaryonitoring Site Name(s) Site Priority Medium

Remains not-attaining for boron and selenium. TMDL approved in December 2015. Pesticides in fish tissue delisted in 2014. in 2014. in fish tissue delisted Pesticides in December 2015. and selenium. TMDL approved boron for not-attaining Remains Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection ABOVE DIVERSION AT AT DIVERSION ABOVE USGS DAM GILLESPIE 09518000 (2-17) Antimony, arsenic, barium, beryllium, Antimony, (2-17) lead, manga copper, chromium, cadmium, boron, zinc selenium, silver, nickel, nese, mercury, AT POWERS BUTTE POWERS AT NEAR CENTENNIAL NEAR CENTENNIAL WASH Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 22 cury, nickel, selenium,silver, zinc um, chromium, copper, lead,manganese,mer (1-6) Antimony, boron, cadmi barium,beryllium, AT ROBBINS BUTTE AT SR85 Parameter (dissolved) Dissolved Selenium Mercury Mercury oxygen Boron G Site Name(s) onitoring Summary Sampling period:5/17/2012 -1/31/2014 FC -Inconclusive •PBC-Inconclusive •AGI -Inconclusive ILA RIVER 13.863 Miles 15070101-010 Waterman Wash -Hassayampa River Metal Samples Applicable Standard AGL -Inconclusive •AWEDW -Not Attaining 1000 ug/L 0.01 ug/L 2.8 mg/L 2 ug/L Impairment MGGLR183.10 MGGLR179.53 Site ID# Add seleniumto the4Alist. Status - - 8/22/2012 5/22/2013 1/28/2013 5/22/2013 1/28/2013 1/31/2014 1/31/2014 5/17/2012 5/17/2012 5/17/2012 1/3/2014 1/3/2014 Exceedances Date Kjeldahl nitrogen nitrogen, phosphorus, total (1) Ammonia,nitrite/nitrate, 109822 109042 Nutrients &Related Samples DEQ # Sampling Agency 4000 ug/L 4000 ug/L 4500 ug/L 2100 ug/L 4150 ug/L 2.21 mg/L 0.84 ug/L 0.84 5.42 ug/L 8.44 ug/L 4.81 ug/L 8.3 ug/L 9.4 ug/L Result ADEQ ADEQ ment. samples isneededto determine impair 6 samples(binomial).Aminimumof20 AGI isinconclusive with5exceedances in ance in5samples. AWEDW isinconclusive with1exceed- ances in6samples. AWEDW isnot-attaining with5exceed- exceedance. AWEDW isinconclusive with1chronic solved solids (5) Dissolved oxygen, pH,total dis Designated use support comments Designated usesupport TMDL Monitoring TMDL Monitoring Category 4A Category Other Samples Purpose AMRC000876 Not attaining - - Middle Gila - AMRC000877 Middle Gila Water Quality Assessments - 23 Middle Gila Water , manganese, copper, lead, mercury (or mercury in fish copper, , manganese, , manganese, copper, lead, mercury lead, , manganese, copper, Monitoring Recommendations Monitoring December 2015, and December 2015, Impairment Discussion Boron, dissolved oxygen, mercury (dissolved) oxygen, dissolved Boron, copper cadmium (dissolved), phosphorus, nitrogen, Zinc (dissolved), E. coli (dissolved), tissue) copper (dis cadmium (dissolved), phosphorus, nitrogen, Zinc (dissolved), solved), E. coli solved), mercury selenium Lead (dissolved), (dissolved), Pesticides in fish tissue delisted in 2014. delisted in fish tissue Pesticides Selenium is added to the 4A list for the following reasons: the following the 4A list for Selenium is added to Start effectiveness monitoring once TMDL strategies are implemented. Collect more dissolved mercury Collect more dissolved are implemented. Start once TMDL strategies effectiveness monitoring the exceedances. samples due to oxygen and dissolved the Zone 1 allocation of the study and is set equal to the chronic AWedw selenium standard of 2 ug/L.). AWedw the chronic equal to is set the Zone 1 allocation of the study and Priority Medium - Load allocations may be drawn directly from the concentration-based TMDLs (the allocation for selenium is addressed by selenium is addressed by allocation for the concentration-based TMDLs (the directly from be drawn - Load allocations may - This reach is already addressed by the Middle Gila TMDLs for Boron and Selenium (ADEQ OFR 15-03), approved by EPA in EPA by and Selenium (ADEQ OFR 15-03), approved Boron Gila TMDLs for the Middle - This reach is already addressed by Missing Core Parameters Missing Core Missing Seasonal Distribution Exceedances Needing More Samples to Assess Samples to Needing More Exceedances Lab Detection Limits Not Low Enough Low Limits Not Lab Detection Needs Monitoring Gaps and Data M Middle Gila Middle Gila Water Quality Assessments - 24 mercury, nickel, selenium,silver, zinc cadmium, chromium, copper, lead, manganese, (1-9) Antimony, boron, barium,beryllium, arsenic, USGS 09517000 AZ ARLINGTON, NEAR ABOVE GILARIVER Parameter Biocriteria Selenium H E. coli Site Name(s) onitoring Summary Sampling period:5/17/2012 -4/8/2015 ASSAYAMPA RIVER 2.263 Miles 15070103-001B Buckeye Canal-GilaRiver FC -Inconclusive •FBC-ImpairedAGL -Attaining Metal Samples IBI 40-49inconclusive Applicable Standard IBI ≥50attaining IBI ≤39violating 235 cfu/100 mL 2 ug/L Impairment MGHSR002.67 MGHSR000.77 Site ID# Add E.colito the303(d)list. Add seleniumto the4Alist. Status 10/25/2012 AWW -Impaired 8/22/2012 2/26/2013 2/26/2013 1/28/2013 5/16/2013 5/16/2013 9/16/2013 5/16/2013 5/17/2012 4/8/2015 Exceedances Date Kjeldahl nitrogen nitrogen, phosphorus,total (4) Ammonia,nitrite/nitrate, 101496 101197 Nutrients &Related Samples DEQ # 613.1 cfu/100 mL 547.5 cfu/100 mL Sampling Agency 6.75 ug/L 5.59 ug/L 2.8 ug/L 6.3 ug/L 6.3 ug/L 4.7 ug/L 9.1 ug/L 9.1 ug/L IBI24 Result ADEQ ADEQ violation. AWW isinconclusive with1biocriteria ances in8samples. AWW isnot-attaining with8exceed- last 3years ofmonitoring. FBC isimpairedwith2exceedances the toxaphene deposits, biocriteria, DDT metabolites, SSC, total dissolved solids,bottom (1-9) Dissolved oxygen, E.coli Designated use support comments Designated usesupport Ambient Monitoring TMDL Monitoring Other Samples Category 5 Category Purpose AMRC000878 Impaired , pH, Middle Gila AMRC000879 Middle Gila Water Quality Assessments - 25 Middle Gila Water to the 303(d) list. to Monitoring Recommendations Monitoring E. coli December 2015, and December 2015, Impairment Discussion None None Mercury arsenic, (dissolved), lead (dissolved) arsenic (dissolved), Antimony Add Add Selenium is added to the 4A list for the following reasons: the following the 4A list for Selenium is added to Collect more E. coli samples in support of TMDL development. Collect a follow-up macroinvertebrate Collect a follow-up samples in supportCollect more E. coli macroinvertebrate of TMDL development. - once TMDL strate for selenium Start result. effectiveness confirm the biocriteria monitoring sample to gies are implemented. the Zone 2 allocation of the study and is set equal to the chronic AWedw selenium standard of 2 ug/L.). AWedw the chronic equal to is set the Zone 2 allocation of the study and High Priority - Load allocations may be drawn directly from the concentration-based TMDLs (the allocation for selenium is addressed by selenium is addressed by allocation for the concentration-based TMDLs (the directly from be drawn - Load allocations may - This reach is already addressed by the Middle Gila TMDLs for Boron and Selenium (ADEQ OFR 15-03), approved by EPA in EPA by and Selenium (ADEQ OFR 15-03), approved Boron Gila TMDLs for the Middle - This reach is already addressed by Missing Core Parameters Missing Core Distribution Missing Seasonal Enough Low Not Limits Lab Detection Exceedances Needing More Samples to Assess Samples to Needing More Exceedances Data Gaps and Monitoring Needs Monitoring and Gaps Data M Middle Gila Middle Gila Water Quality Assessments - 26 Data GapsandMonitoring Needs selenium, zinc chromium, copper, lead,manganese,mercury, (4) Antimony, boron, cadmium, beryllium, arsenic, YON DAM AT BLMGAGE, BOX CAN- Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Parameter deposits Bottom H Medium Priority Site Name(s) onitoring Summary Sampling period:9/16/2014 -4/15/2015 ASSAYAMPA RIVER 32.07 Miles 15070103-004 Cottonwood Wash Creek-Martinez Metal Samples FC -Attaining •FBC-Attaining •AGI -Attaining Applicable Standard Initiate abottom depositTMDLoncetheImpairedWaters Identification Rule isupdated. < 50%fines Use Support AGL -Attaining •AWW -Inconclusive MGHSR058.80 Site ID# 4/15/2015 9/24/2012 Exceedances Selenium, mercury (dissolved) Selenium, mercury None None Bottom deposits Date Kjeldahl nitrogen nitrogen, phosphorus,total (4) Ammonia,nitrite/nitrate, 100463 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency Result 59% 68% ADEQ AWW isinconclusive. deposits SSC, total dissolved solids,bottom (2-4) Dissolved oxygen, E.coli Designated use support comments Designated usesupport Ambient Monitoring Other Samples Category 2 Category Attaining someuses Purpose AMRC000880 , pH, Middle Gila , pH, Not attaining Not AMRC000881 Purpose Other Samples Category 4A Ambient Monitoring Designated use supportDesignated comments (1-4) Dissolved oxygen, E. coli oxygen, (1-4) Dissolved solids, bottom dissolved SSC, total deposits, biocriteria AWC remains not-attaining with 1 remains not-attaining AWC samples All other exceedance. chronic had reporting than limits greater criteria. chronic with 1 violation. is inconclusive AWC Middle Gila Water Quality Assessments - 27 Middle Gila Water IBI 23 Result ADEQ 0.72 ug/L Sampling Agency Date DEQ # Nutrients & Related Samples Nutrients & Related 101195 (4) Ammonia, nitrite/nitrate, (4) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen 4/21/2014 4/21/2014 Cadmium (dissolved) None None selenium, mercuryCadmium (dissolved), (dissolved) Exceedances Status Site ID # Site MGHSR108.19 Impairment Impairment AGL - Not Attaining • AWC - Not Attaining - Not • AWC Attaining - Not AGL IBI ≤ 45 violating IBI ≥ 52 attaining 0.282 ug/L chronic 0.282 ug/L chronic Applicable Standard @ 122 mg/L hardness IBI 46 - 51 inconclusive IBI 46 - 51

Metal Samples Metal Low pH (2006/8); Zinc, cadmium, and copper (1992) Zinc, cadmium, pH (2006/8); Low Headwaters - Copper Creek - Copper Headwaters 15070103-007A Miles 11

ASSAYAMPA RIVER ASSAYAMPA FC - Attaining • FBC - Not Attaining • AGI - Not Attaining - Not • AGI Attaining FBC - Not • FC - Attaining Sampling period: 9/23/2013 - 4/21/2014 Sampling period: 9/23/2013 onitoring Summary onitoring

Site Name(s) Site

H

Cadmium Biocriteria (dissolved) Parameter Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection Exceedances Needing More Samples to Assess Needing More Samples to Exceedances AT JERSEY AT (4) Antimony, arsenic, beryllium, cadmium, boron, (4) Antimony, mercury, lead, manganese, copper, chromium, selenium, zinc Needs Data Gaps and Monitoring

M Middle Gila Middle Gila Water Quality Assessments - 28 seasonally distributed samples inthisassessmentperiod.Theground improvements seemto beimproving metal concentra TMDL for cadmium,copperandzinccompleted andapproved in2002.Therewere nocopper, zincorpHexceedances infour Medium Priority confirm thebiocriteria result. limitfor dissolved macroinvertebratereporting cadmium(<0.5ug/L).Collectafollow-up sampleto Collect morecadmium,copper, andzincsamplesto assessontheground improvements. Usealower Impairment Discussion tions andpHlevels. Monitoring Recommendations AMRC000882 - Middle Gila , pH, AMRC000883 Purpose Attaining some uses Attaining Category 2 Other Samples Ambient Monitoring Designated use supportDesignated comments (1-8) Dissolved oxygen, E. coli oxygen, (1-8) Dissolved solids, bottom dissolved SSC, total deposits, biocriteria - with 1 exceed is inconclusive AWW ance in 7 samples. with 1 exceedance FBC is inconclusive of monitoring. in the last 3 years AWW is inconclusive. AWW Middle Gila Water Quality Assessments - 29 Middle Gila Water ADEQ 72% 59% Result 4.5 mg/L Sampling Agency 435 cfu/100 mL 435 cfu/100 1986.3 cfu/100 mL 1986.3 cfu/100 Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 100462 (8) Ammonia, nitrite/nitrate, (8) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen Date Bottom deposits, dissolved oxygen, E. coli oxygen, deposits, dissolved Bottom None None Selenium, mercury (dissolved) Exceedances 9/6/2011 6/6/2012 6/6/2012 4/15/2015 4/15/2015 and dissolved oxygen samples due to the exceedances. Initiate a bottom deposit a bottom Initiate the exceedances. samples due to oxygen and dissolved Site ID # Site MGHSR048.20 AGL - Attaining • AWW - Inconclusive - • AWW - Attaining AGL Use SupportUse 6.0 mg/L < 50% fines 235 cfu/100 ml 235 cfu/100 Collect more E. coli Rule is updated. Identification TMDL once the Impaired Waters - Applicable Standard Metal Samples Metal FC - Attaining • FBC - Inconclusive • AGI - Attaining • AGI FBC - Inconclusive • FC - Attaining Sols Wash - 8 miles below Wickenburg below - 8 miles Sols Wash 15070103-002A Miles 9.195 ASSAYAMPA RIVER ASSAYAMPA Sampling period: 9/6/2011 - 4/15/2015 Sampling period: 9/6/2011 onitoring Summary onitoring High Site Name(s) Site Priority

E. coli H oxygen Bottom Bottom

deposits Dissolved Dissolved Parameter Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection AT NATURE CONSER NATURE AT VANCY (8) Antimony, arsenic, beryllium, cadmium, boron, (8) Antimony, mercury, lead, manganese, copper, chromium, selenium, zinc Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 30 Data GapsandMonitoring Needs (0) None USGS STREET AT40TH Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess I Priority Site Name(s) NDIAN BENDWASH Low onitoring Summary Sampling period:8/2/2014 -12/4/2014 4.847 Miles 15060106B-179 Headwaters -SaltRiver Metal Samples Collect coreparameters to representatleast3seasonsduring anassessmentperiod. PBC -Inconclusive •AWE -Inconclusive Use Support MGIBW014.04 Site ID# No Exceedances None Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) None (0) None 101520 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency USGS (2) Dissolved oxygen, pH Data SharingPartnership Other Samples Category 3 Category Purpose AMRC000884 Inconclusive Middle Gila - Impaired AMRC000885 Purpose Category 5 Other Samples Ambient Monitoring Ambient Monitoring Designated use supportDesignated comments (3-6) Dissolved oxygen, pH, total pH, total oxygen, (3-6) Dissolved solids, fluoride, fish tissue dissolved mercury FC remains impaired. Middle Gila Water Quality Assessments - 31 Middle Gila Water ADEQ ADEQ Result 0.33 mg/kg striped bass Sampling Agency (mean - 1SD) , nitrite/nitrate, fluoride, arsenic, chromium, lead, boron, fluoride, arsenic, lead, boron, chromium, , nitrite/nitrate, DEQ # Nutrients & Related Samples Nutrients & Related 101000 100068 (6) Ammonia, nitrite/nitrate, (6) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen Date None E. coli copper (dis pH, cadmium (dissolved), oxygen, dissolved Zinc (dissolved), E. coli solved), manganese, copper mercury selenium Cadmium (dissolved), (dissolved), Exceedances 10/1/2014 Status Site ID # Site MGPLE-B MGPLE-MAR Mercury in fish tissue (EPA 2006/8) Mercury (EPA in fish tissue Impairment Impairment 0.3 mg/kg Applicable Standard

Metal Samples Metal 15070102-1100 8000 Acres

DWS - Inconclusive • FC - Impaired • FBC - Inconclusive • FC - Impaired • FBC - Inconclusive DWS AKE PLEASANT AKE Sampling period: 3/14/2012 - 10/29/2014 Sampling period: 3/14/2012 AGI - Inconclusive • AGL - Inconclusive • AWW - Inconclusive - Inconclusive • AWW - Inconclusive • AGL - Inconclusive AGI onitoring Summary onitoring

Site Name(s) Site

L

fish tissue Mercury in Parameter Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection Exceedances Needing More Samples to Assess Needing More Samples to Exceedances MID LAKE (3-6) Arsenic, beryllium,- cadmium, chromi boron, selenium, lead, manganese, mercury, um, copper, zinc MARINA Data Gaps and Monitoring Needs Data Gaps and Monitoring

M Middle Gila Middle Gila Water Quality Assessments - 32 Remains infishtissue(EPA impairedfor mercury issuedin2009andstilleffect. 2006/8).Fishconsumptionadvisory Priority High Collect more samples in support ofTMDLdevelopment.Collect moresamplesinsupport Impairment Discussion Monitoring Recommendations AMRC000886 Middle Gila , pH, AMRC000887 Purpose Attaining some uses Attaining Category 2 Other Samples Ambient Monitoring Designated use supportDesignated comments (1-5) Dissolved oxygen, E. coli oxygen, (1-5) Dissolved solids, bottom dissolved SSC, total deposits, biocriteria FBC is inconclusive with 1 exceedance with 1 exceedance FBC is inconclusive (last 3 outside the assessment window of monitoring). years Middle Gila Water Quality Assessments - 33 Middle Gila Water ADEQ Result Sampling Agency 291 cfu/100 mL cfu/100 291 Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 100578 (5) Ammonia, nitrite/nitrate, (5) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen Date None None oxygen Dissolved Mercury (dissolved) Exceedances 9/1/2011 AWW - Inconclusive AWW Site ID # Site samples due to the exceedance. Collect missing core parameters to represent at least 3 to Collect missing core parameters the exceedance. samples due to MGLAS004.52 Use SupportUse 235 cfu/100 mL 235 cfu/100 Collect E. coli seasons during an assessment period. Applicable Standard Metal Samples Metal FC - Attaining • FBC - Inconclusive • AGL - Attaining • AGL FBC - Inconclusive • FC - Attaining Headwaters - Ash Creek - Ash Headwaters 15070102-039 Miles 17.676 ITTLE ASH CREEK (LAS) ASH CREEK ITTLE Sampling period: 9/1/2011 - 3/18/2015 Sampling period: 9/1/2011 onitoring Summary onitoring Low Site Name(s) Site Priority

E. coli L

Parameter Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection NEAR ESTLER PEAK (5) Antimony, arsenic, beryllium, cadmium, boron, (5) Antimony, lead, manganese, mercury, copper, chromium, selenium, zinc Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 34 Data GapsandMonitoring Needs CANYON ABOVE CLAYS WELL cury, selenium,zinc um, chromium, copper, lead,manganese,mer (4-5) Antimony, boron, cadmi beryllium, arsenic, BOUNARY AT FOREST SERVICE Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Parameter deposits Bottom L E. coli Medium Priority Site Name(s) onitoring Summary Sampling period:7/23/2012 -4/25/2013 ITTLE SYCAMORE CREEK FC -Attaining •FBC-Inconclusive •AWW -Inconclusive 8.419 Miles 15070102-615 Headwaters -Sycamore Creek Metal Samples IBI 40-49inconclusive Applicable Standard confirm thebioassessment result. Collect moreE.coli IBI ≥50attaining IBI ≤39violating 235 cfu/100 mL Use Support MGLSY000.42 MGLSY000.91 Site ID# samplesdueto the exceedance. macroinvertebrate Collectafollow-up sampleto - 4/25/2013 4/25/2013 - Exceedances Selenium, mercury (dissolved) Selenium, mercury None None E. coli Date Kjeldahl nitrogen nitrogen, phosphorus,total (5) Ammonia,nitrite/nitrate, 109522 106742 Nutrients &Related Samples DEQ # Monitoring Recommendations 579.4 cfu/100 Sampling Agency IBI48 Result mL ADEQ ADEQ 4 samples. FBC isinconclusive with1exceedance in AWW isinconclusive. deposits, biocriteria SSC, total dissolved solids,bottom (2-5) Dissolved oxygen, E.coli Designated use support comments Designated usesupport Ambient Monitoring Ambient Monitoring Other Samples Category 2 Category Attaining someuses Purpose AMRC000888 , pH, Middle Gila - - , pH, Inconclusive AMRC000889 Purpose Category 3 Other Samples Ambient Monitoring Designated use supportDesignated comments (1-4) Dissolved oxygen, E. coli oxygen, (1-4) Dissolved solids dissolved total DWS is inconclusive with 1 exceedance in with 1 exceedance is inconclusive DWS 3 samples (binomial). DWS is inconclusive with 3 exceedances with 3 exceedances is inconclusive DWS in 3 samples (binomial). Middle Gila Water Quality Assessments - 35 Middle Gila Water ADEQ Result 12.2 ug/L 5460 ug/L 1130 ug/L 1200 ug/L Sampling Agency , nitrite/nitrate, fluoride, arsenic, chromium, lead, boron, fluoride, arsenic, lead, boron, chromium, , nitrite/nitrate, Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 100037 (3-4) Ammonia, nitrite/nitrate, (3-4) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen Date Arsenic, manganese E. coli Zinc (dissolved), copper (dis pH, cadmium (dissolved), oxygen, dissolved Zinc (dissolved), solved), E. coli solved), mercury manganese, copper, Cadmium (dissolved) Exceedances 6/17/2015 10/1/2014 10/1/2014 4/14/2015 - AWC - Inconclusive AWC Site ID # Site MGLYN-A AGI - Inconclusive • AGL - Inconclusive • AGL - Inconclusive AGI Use SupportUse 10 ug/L 10 980 ug/L Collect more arsenic and manganese samples due to exceedances. Collect core parameters to repre to Collect core parameters exceedances. Collect more arsenic and manganese samples due to sent at least 3 seasons during an assessment period. Applicable Standard Metal Samples Metal 15070102-0860 49 Acres YNX LAKE YNX DWS - Inconclusive • FC - Inconclusive • FBC - Inconclusive - Inconclusive • FBC • FC - Inconclusive - Inconclusive DWS Sampling period: 6/29/2011 - 6/17/2015 Sampling period: 6/29/2011 - onitoring Summary onitoring Low Site Name(s) Site Priority

nese L Arsenic Manga

Parameter Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Lab Detection Limits Not Low Enough Low Limits Not Lab Detection AT DAM AT (3) Arsenic, beryllium, cadmium, chromi boron, selenium, lead, manganese, mercury, um, copper, zinc Needs Data Gaps and Monitoring

M Middle Gila Middle Gila Water Quality Assessments - 36 Parameter (dissolved) Copper M FC -Inconclusive •FBC-Inconclusive •AGL -Inconclusive 19.609 Miles 15050100-012B 11.9 ug/Lchronic @140 mg/Lhardness 11.9 29.3 ug/Lchronic @ 400mg/Lhardness 29.3 ug/Lchronic @ 400mg/Lhardness 29.3 ug/Lchronic @ 400mg/Lhardness 20.3 ug/Lchronic @ 260mg/Lhardness 29.3 ug/Lchronic @400mg/Lhardness 29.3 ug/Lchronic @400mg/Lhardness 18.9 ug/Lchronic @24018.9 mg/Lhardness 16.2 ug/Lchronic @200mg/Lhardness 24.8 ug/Lchronic @330mg/Lhardness 24.2 ug/Lchronic @320mg/Lhardness 24.8 ug/Lchronic @330mg/Lhardness 23.5 ug/Lchronic @310 mg/Lhardness 23.5 ug/Lchronic @310 mg/Lhardness 16.9 ug/Lchronic @210 mg/Lhardness 17.6 ug/Lchronic @220mg/Lhardness 17.6 ug/Lchronic @220mg/Lhardness Devil’s Canyon -GilaRiver INERAL CREEK(MIN) 8.3 ug/Lchronic @91 mg/Lhardness 49.6 ug/Lacute, 29.3ug/Lchronic 16.0 ug/Lacute, 10.5 ug/Lchronic 24.6 ug/Lacute, 15.5ug/Lchronic 27.0 ug/Lacute, 16.9 ug/Lchronic @190mg/L hardness @ 120 mg/Lhardness @ 120 @ 400mg/Lhardness @ 210 ug/Lhardness Applicable Standard Dissolved copper(1992),selenium(2004) Impairment and dissolved oxygen (2006/8) Status AWW -Impaired Exceedances 12/26/2012 12/22/2011 10/18/2011 12/15/2010 11/21/2012 10/12/2010 11/15/2010 11/17/2011 9/26/2012 8/22/2012 2/15/2012 1/25/2012 3/14/2012 1/23/2013 2/20/2013 1/13/2011 8/12/2010 5/24/2012 4/27/2012 7/14/2010 9/16/2010 2/17/2011 Date 110 ug/L 110 ug/L 110 ug/L 33 ug/L 32 ug/L 69 ug/L 93 ug/L 60 ug/L 45 ug/L 69 ug/L 42 ug/L 42 ug/L 69 ug/L 68 ug/L 19 ug/L 28 ug/L 38 ug/L 56 ug/L 68 ug/L 80 ug/L 79 ug/L 76 ug/L Result chronic exceedances. 8 acute exceedances and27 AWW remainsimpairedwith Designated use support com- Designated usesupport Category 5 Category AMRC000890 ments Impaired Middle Gila ments AMRC000891 Purpose Designated use support Designated com- Data Sharing Partnership Data Sharing Partnership Data Sharing Partnership Data Sharing Partnership AWW remains impaired with 18 AWW in 34 samples. exceedances Middle Gila Water Quality Assessments - 37 Middle Gila Water Result 31 ug/L 31 10 ug/L 10 34 ug/L 65 ug/L 11 ug/L 53 ug/L 63 ug/L 11 ug/L 12 ug/L 7.8 ug/L 7.8 2.1 ug/L 2.1 2.1 ug/L 2.1 2.8 ug/L 6.2 ug/L 8.8 ug/L 4.3 ug/L 8.3 ug/L 8.6 ug/L 9.3 ug/L 9.6 ug/L 9.3 ug/L 2.6 ug/L 8.3 ug/L ASARC ASARC ASARC ASARC Sampling Agency Date 6/6/2011 7/7/2011 5/17/2011 4/17/2013 7/17/2013 8/21/2013 5/24/2012 6/27/2012 1/22/2014 3/26/2014 3/20/2013 5/15/2013 5/15/2013 9/13/2011 9/25/2013 8/22/2012 9/26/2012 7/18/2012 11/17/2011 10/24/2012 10/23/2013 10/18/2011 11/20/2013 DEQ # 100472 103331 103334 103333 Site ID # Site MGMIN008.81 MGMIN001.38 MGMIN002.65 MGMIN003.69 2 ug/L 19.6 ug/L chronic 19.6 ug/L chronic Applicable Standard Applicable - @ 210 ug/L hardness ug/L @ 210 @ 270 ug/L hardness @ 270 @ 220 ug/L hardness @ 110 mg/L hardness @ 110 @ 250 mg/L hardness 14.7 ug/L acute, 9.7 ug/L chronic 9.7 ug/L chronic acute, ug/L 14.7 28.2 ug/L acute, 17.6 ug/L chronic ug/L chronic 17.6 28.2 ug/L acute, 27.0 ug/L acute, 16.9 ug/L chronic chronic ug/L 16.9 acute, ug/L 27.0 34.3 ug/L acute, 20.9 ug/L chronic chronic 20.9 ug/L 34.3 ug/L acute, Sampling period: 7/14/2010 - 3/28/2014 Sampling period: 7/14/2010 onitoring Summaryonitoring Site Name(s) Site

Copper

Selenium (dissolved) Parameter (Continued) VIN, AZ AT INDIAN GARDENS AT 177 HIGHWAY AT BRIDGE NORTH OF KEL CHANNLE OUTLET TUNNEL OUTLET

M Middle Gila Middle Gila Water Quality Assessments - 38 Data GapsandMonitoring Needs (106-110) Copper, lead,selenium,zinc Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Priority High Remains impairedfor dissolved copper(1992),selenium(2004)anddissolved oxygen (2006/8). Metal Samples Collect coreparameters to representatleast3seasonsduringanassessmentperiod. ofTMDLdevelopment.Collect additionalsamplesinsupport Usealower detection limitfor selenium. Copper (dissolved), lead,lead(dissolved), selenium Dissolved oxygen, pH,cadmium(dissolved), E.coli in fishtissue) Dissolved oxygen, pH,cadmium(dissolved), E.coli None Impairment Discussion (0) None Nutrients &Related Samples Monitoring Recommendations (0) None Other Samples , mercury , mercury, (ormercury AMRC000892 Middle Gila Inconclusive AMRC000893 Purpose Category 3 Other Samples TMDL Monitoring (0) None Middle Gila Water Quality Assessments - 39 Middle Gila Water ADEQ Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 102520 (0) None None copper (dissolved) pH, cadmium (dissolved), Zinc (dissolved), copper (dissolved) pH, cadmium (dissolved), Zinc (dissolved), None No Exceedances Site ID # Site MGMNR000.21 Use SupportUse PBC - Inconclusive • AWE - Inconclusive • AWE PBC - Inconclusive Collect core parameters to represent at least 3 seasons during an assessment period. represent at to Collect core parameters Metal Samples Metal

INERAL CREEK (MNR) CREEK INERAL Creek Canyon - Cedar Headwaters 15070102-823 3.984 Miles

Sampling period: 7/10/2011 - 7/10/2011 Sampling period: 7/10/2011 onitoring Summary onitoring Low Site Name(s) Site

Priority

M

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection AT MOUTH AT (1) Copper, lead (1) Copper, Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 40 ROAD ABOVE BIGBUGMESA NEAR SNOWDRIFT MINE Parameter (dissolved) (dissolved) Cadmium Zinc (dis Copper solved) M Lead pH Site Name(s) onitoring Summary Sampling period:7/18/2013 -8/12/2014 - 0.543 Miles 15070102-123 Headwaters -Unnamed Tributary (UB1) ONEY METALS TRIB 2335 ug/L@240 mg/Lhardness 2580 ug/L@270 mg/Lhardness 59.8 ug/L@270 mg/Lhardness 59.3 ug/L@270 mg/Lhardness 53.1 ug/L@240 mg/Lhardness 13.5 ug/L@56mg/Lhardness 13.5 15.7 ug/L@66mg/Lhardness 680 ug/L@56mg/Lhardness 782 ug/L@66mg/Lhardness Applicable Standard 15 ug/L Impairment 6.5 SU Add copperandzincto the303(d)list. PBC -Inconclusive •AWE -Impaired MGNMT000.32 MGNMT000.14 Site ID# Status Exceedances 7/18/2013 7/18/2013 7/18/2013 7/18/2013 9/13/2013 9/13/2013 8/26/2013 8/12/2014 8/26/2013 8/26/2013 8/26/2013 3/3/2014 3/3/2014 3/3/2014 109882 109802 DEQ # Date Sampling Agency 18000 ug/L 18000 14000 ug/L 2200 ug/L 3300 ug/L 5790 ug/L 830 ug/L 830 ug/L 150 ug/L 140 ug/L 140 ug/L 23 ug/L 23 ug/L 20 ug/L 5.72 SU ADEQ ADEQ Result in 5samples. AWE isimpairedwith4exceedances ances in5samples(binomial). PBC isinconclusive with4exceed- in 5samples. AWE isimpairedwith4exceedances exceedance in4samples. AWE andPBCareinconclusive with1 ance in4samples. AWE isinconclusive with1exceed- Designated use support comments Designated usesupport TMDL Monitoring TMDL Monitoring Category 5 Category Purpose AMRC000894 Impaired Middle Gila - AMRC000895 Other Samples Other (4-5) Dissolved oxygen, pH, total dis pH, total oxygen, Dissolved (4-5) solved solids solved Middle Gila Water Quality Assessments - 41 Middle Gila Water Monitoring Recommendations Monitoring Nutrients & Related Samples & Related Nutrients (0) None Impairment Discussion pH, cadmium (dissolved), lead pH, cadmium (dissolved), None copper (dissolved) pH, cadmium (dissolved), Zinc (dissolved), selenium Copper (dissolved), - - Add copper and zinc to the 303(d) list. copper and zinc to Add Collect more samples in supportCollect more samples of TMDL development. Metal Samples Metal High Priority Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection Exceedances Needing More Samples to Assess to Needing More Samples Exceedances (5-6) Antimony, arsenic, beryllium, cadmi boron, Antimony, (5-6) manganese, mer lead, copper, um, chromium, selenium, zinc cury, Data Gaps and Monitoring Needs Monitoring Gaps and Data

M Middle Gila Middle Gila Water Quality Assessments - 42 Data GapsandMonitoring Needs (1) Copper, lead AT BEDROCK OUTCROP Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess P Priority Site Name(s) Low onitoring Summary PBC -Inconclusive •AGL -Inconclusive •AWE -Inconclusive Sampling period:7/29/2010 -7/29/2010 EACHVILLE WASH 2.09 Miles 15050100-1846 Headwaters Wash -Fortuna Metal Samples clusive with2leadexceedances inthe2012/14 assessment. Collect coreparameters to representatleast3seasonsduring anassessmentperiod.PBCwas incon Use Support MGPEW000.79 Site ID# No Exceedances None Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved), copper, lead Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved), copper, lead None (0) None 108342 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency ADEQ solved solids (1) Dissolved oxygen, pH,total dis TMDL Monitoring Other Samples Category 3 Category Purpose AMRC000896 Inconclusive - - Middle Gila Inconclusive AMRC000897 Purpose Category 3 Other Samples TMDL Monitoring (0) None Middle Gila Water Quality Assessments - 43 Middle Gila Water ADEQ Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 105396 (0) None None copper (dissolved) pH, cadmium (dissolved), Zinc (dissolved), copper (dissolved) pH, cadmium (dissolved), Zinc (dissolved), None No Exceedances Site ID # Site MGPEC000.38 Use SupportUse PBC - Inconclusive • AWE - Inconclusive • AWE PBC - Inconclusive Collect core parameters to represent at least 3 seasons during an assessment period. represent at to Collect core parameters Metal Samples Metal

Headwaters - Bear Creek - Bear Headwaters 15070102-858 Miles 7.04 ECK CANYON ECK

Sampling period: 10/7/2010 - 10/7/2010 Sampling period: 10/7/2010 onitoring Summary onitoring Low Site Name(s) Site

Priority

P

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection DOWNSTREAM OF PECK DOWNSTREAM MINE (1) Copper, lead (1) Copper, Needs Data Gaps and Monitoring

M Middle Gila Middle Gila Water Quality Assessments - 44 Parameter (dissolved) (dissolved) Mercury Mercury Copper Copper Q Lead UEEN CREEK 8.761 Miles 15050100-014A Headwaters -SuperiorMiningDiv. outfall 16.2 ug/Lacute, 10.6 ug/Lchronic 49.6 ug/Lacute, 29.3ug/Lchronic 10.5 ug/Lacute, 7.1 ug/Lchronic 12.2 ug/Lacute,12.2 8.2ug/Lchronic PBC -Impaired•AGL -Attaining •AWW -Impaired 100 ug/L(AGL), 15ug/L(PBC) Copper (2002),lead(2010) andselenium(2012) @ 125 mg/Lhardness @ 125 @ 122 mg/Lhardness @ 122 @ 129 mg/Lhardness @ 129 @ 134 mg/Lhardness @ 134 @ 111mg/Lhardness @ 400mg/Lhardness @ 179 mg/Lhardness @ 59mg/Lhardness @ 90mg/Lhardness @ 77 mg/Lhardness Applicable Standard 11.5 ug/Lchronic 11.5 11.1 ug/Lchronic 11.1 14.7 ug/Lchronic 10.8 ug/Lchronic 9.8 ug/Lchronic 5.7 ug/Lchronic 0.01 ug/L Impairment 500 ug/L Status Exceedances 12/14/2011 11/28/2011 12/17/2012 3/13/2013 1/29/2013 8/19/2011 8/19/2011 7/15/2014 11/1/2010 7/15/2014 7/15/2014 10/9/2014 10/9/2014 10/9/2014 5/2/2012 Date 12.6 ug/L 12.6 15.9 ug/L 50.8 ug/L 28.6 ug/L 25.7 ug/L 0.05 ug/L 21.5 ug/L 22.6 ug/L 20.1 ug/L 680 ug/L 360 ug/L 9.8 ug/L 25 ug/L 39 ug/L 61 ug/L Result in 13 samples. in 13 AGL isattainingwith1exceedance chronic and4acute exceedances. AWW remainsimpairedwith10 ance in1sample. AWW isinconclusive with 1exceed- samples (binomial). in 13 mains impairedwith3exceedances samples (binomial).PBCre in 13 AGL isattaining with1exceedance Designated use support comments Designated usesupport Category 5 Category AMRC000898 Impaired - Middle Gila - AMRC000899 Purpose Other Samples Data Sharing Partnership Data Sharing PartnershipData Sharing (3) pH Middle Gila Water Quality Assessments - 45 Middle Gila Water RESCU RESCU Sampling AgencySampling Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 103461 103095 - nitrite/ni nitrite, (1) Nitrate, trate Impairment Discussion Mercury lead (dissolved), E. coli oxygen, Dissolved E. coli oxygen, Dissolved Mercury selenium (dissolved), - were collected during critical conditions. during collected were Site ID # Site MGQEN037.47 MGQEN038.73 cal conditions. Collect missing core parameters to represent at least 3 seasons during an assessment represent at least 3 seasons during an assessment to cal conditions. Collect missing core parameters period. Collect additional samples in support of TMDL development. Collect more selenium samples during criti Collect more selenium Collect additional samples in support development. of TMDL Metal Samples Metal - Sampling period: 11/1/2010 - 10/9/2014 11/1/2010 Sampling period: onitoring Summaryonitoring High Site Name(s) Site Priority

Remains impaired for copper (2002), lead (2010) and selenium (2012). There were no exceedances of selenium in 13 no exceedances There were and selenium (2012). (2002), lead (2010) copper impaired for Remains

samples, of which only one sample had a detection limit issue. No information was available as to whether all selenium data whether to as available was limit issue. No information samples, of which only one sample had a detection ABOVE MINE DIS ABOVE CHARGE Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection MAGMA AVE & QUEEN AVE MAGMA CREEK (12-13) Antimony, arsenic, barium, beryllium, (12-13) Antimony, lead, manga copper, chromium, cadmium, boron, thallium, selenium, silver, nickel, nese, mercury, zinc Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 46 Data GapsandMonitoring Needs None N/A Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Q Medium Priority Site Name(s) onitoring Summary Sampling period:Nosamples Remains impaired for isincluded withQueenCreekCopperTMDLproject. copper(2002).Thisreach UEEN CREEK 5.9 Miles 15050100-014B -Potts CanyonSuperior MiningWWTP Metal Samples Collect samples in support ofTMDLdevelopment.Collect samplesinsupport Impairment PBC -Inconclusive •AWW -Impaired Site ID# Status Copper (2002) N/A All coreparameters All coreparameters None Impairment Discussion None Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency None Other Samples Category 5 Category Purpose AMRC000900 Impaired Middle Gila Impaired AMRC000901 Purpose Category 5 Other Samples None Middle Gila Water Quality Assessments - 47 Middle Gila Water Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related None Impairment Discussion None All core parameters All core parameters N/A Copper (2010) AWW- Impaired AWW- Status Site ID # Site Impairment Impairment Collect more samples in support of TMDL development. Metal Samples Metal Potts Canyon - Whitlow Canyon - Whitlow Canyon Potts 15050100-014C 8.0 Miles UEEN CREEK UEEN FC - Inconclusive • FBC - Inconclusive • AGL - Inconclusive - Inconclusive • AGL • FBC - Inconclusive FC - Inconclusive Sampling period: No samples onitoring Summary onitoring Remains impaired for dissolved copper (2010). This reach is included with Queen Creek Copper TMDL project. copper (2010). dissolved impaired for Remains Site Name(s) Site Priority

Medium

Q

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection N/A None Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 48 Data GapsandMonitoring Needs mercury, nickel, selenium,silver, zinc cadmium, chromium, copper, lead,manganese, (1-3) Antimony, boron, barium,beryllium, arsenic, 09512407 DISCHARGE USGS AT 91ST AVENUE WWTP Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Parameter Selenium S Medium Priority Site Name(s) onitoring Summary Sampling period:5/14/2012 -5/22/2013 ALT RIVER FC -Inconclusive •PBC-Inconclusive •AGI -Attaining 11.359 Miles 15060106B-001D 23rd Avenue outfall -GilaRiver WWTP Metal Samples Applicable Standard seasons duringanassessment period.Pesticides infishtissuedelisted in2014. Collect moreseleniumsamples dueto theexceedance. Collect coreparameters to representatleast3 2 ug/L AGL -Attaining •AWEDW -Inconclusive Use Support MGSLR003.96 Site ID# 2/27/2013 Exceedances metabolites, toxaphene (dissolved), (dissolved), arsenic lead(dissolved), DDT mercury Arsenic, E. coli E. coli Selenium Date Kjeldahl nitrogen nitrogen, phosphorus,total (1) Ammonia,nitrite/nitrate, 100768 Nutrients &Related Samples DEQ # , mercury infishtissue) (ormercury , mercury Monitoring Recommendations Sampling Agency 3.8 ug/L Result ADEQ ance in3samples. AWEDW isinconclusive with1exceed- total dissolved solids (2-3) Dissolved oxygen, E.coli Designated use support comments Designated usesupport TMDL Monitoring Other Samples Category 2 Category Attaining someuses Purpose AMRC000902 , pH, Middle Gila , pH Inconclusive AMRC000903 Purpose Category 3 Other Samples Data Sharing Partnership Designated use supportDesignated comments (104) Dissolved oxygen, E. coli oxygen, Dissolved (104) - and FBC are attaining with 8 ex AWW samples (binomial). ceedances in 104 AWW is attaining with 1 exceedance in is attaining with 1 exceedance AWW samples (binomial). 104 FBC is inconclusive. There was only one There was FBC is inconclusive. based on exceedance related non-storm - precipitation data, and the exceed NOAA the entire assessment over ance rate less than 10%. period was Middle Gila Water Quality Assessments - 49 Middle Gila Water TEMPE Result 9.3 SU 9.4 SU 9.5 SU 9.3 SU 9.8 SU 9.4 SU 9.5 SU 9.3 SU 5.3 mg/L Sampling Agency 816 cfu/100 mL cfu/100 816 579 cfu/100 mL cfu/100 579 238 cfu/100 mL 238 cfu/100 mL 238 cfu/100 326 cfu/100 mL 326 cfu/100 3630 cfu/100 mL 3630 cfu/100 DEQ # Nutrients & Related Samples Nutrients & Related 110342 (24) Ammonia, nitrite/nitrate, Ammonia, nitrite/nitrate, (24) Kjeldahl nitrogen total nitrogen, Date Exceedances 9/9/2013 3/5/2012 2/27/2012 4/16/2012 7/16/2012 7/22/2013 4/15/2013 4/29/2013 1/28/2013 5/13/2013 3/26/2012 4/23/2012 3/12/2012 12/17/2012 11/25/2013 Site ID # Site MGSLR025.38 Use SupportUse 9.0 SU 6.0 mg/L 235 cfu/100 mL 235 cfu/100 Applicable Standard Metal Samples Metal 33 26’4.257”/111 54’33.886” - 33 25’58.366”/111 56’55.923” 25’58.366”/111 54’33.886” - 33 33 26’4.257”/111 15060106B-003C 2.53 Miles ALT RIVER ALT Sampling period: 1/3/2012 - 12/30/2013 Sampling period: 1/3/2012 FC - Inconclusive • FBC - Inconclusive • AWW - Inconclusive - Inconclusive • AWW • FBC - Inconclusive FC - Inconclusive onitoring Summaryonitoring Site Name(s) Site

pH S E. coli oxygen

Dissolved Dissolved Parameter ABOVE TEMPE TOWN TEMPE TOWN ABOVE LAKE (0) None

M Middle Gila Middle Gila Water Quality Assessments - 50 Data GapsandMonitoring Needs Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Priority Low for Collect coreparameters to representatleast3seasonsduringanassessmentperiod.Keep monitoring E. coli dueto exceedances. None Zinc (dissolved), cadmium(dissolved), copper(dissolved), mercury infishtissue) mercury Zinc (dissolved), cadmium(dissolved), (or copper(dissolved), mercury E. coli Monitoring Recommendations AMRC000904 Middle Gila , pH, Attaining all uses Attaining AMRC000905 Purpose Category 1 Other Samples Ambient Monitoring SSC, total dissolved solids, bottom solids, bottom dissolved SSC, total deposits (1-6) Dissolved oxygen, E. coli oxygen, (1-6) Dissolved Middle Gila Water Quality Assessments - 51 Middle Gila Water ADEQ Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 109242 (6) Ammonia, nitrite/nitrate, (6) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen None None None Mercury (dissolved) - No Exceedances - Site ID # Site MGSSW000.38 Use SupportUse Good core parameter coverage. Good core parameter Metal Samples Metal FC - Attaining • FBC - Attaining • AWW - Attaining • AWW FBC - Attaining • FC - Attaining

Headwaters - Unnamed Trib @ 33 57’58.66”/111 51’52.07” @ 33 57’58.66”/111 Trib - Unnamed Headwaters 15060106B-412 Miles 5.17 EVEN SPRINGS WASH SPRINGS EVEN

Sampling period: 10/11/2012 - 4/22/2015 Sampling period: 10/11/2012 onitoring Summary onitoring Low Site Name(s) Site

Priority

S

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection UPSTREAM OF FS ROAD UPSTREAM OF FS ROAD 24 (5-6) Antimony, arsenic, beryllium, cadmi boron, (5-6) Antimony, lead, manganese, mer copper, um, chromium, selenium, zinc cury, Needs Data Gaps and Monitoring

M M Middle Gila Data GapsandMonitoring Needs Middle Gila Water Quality Assessments - 52 selenium, silver, thallium,zinc mium, chromium, copper, lead,mercury, nickel, (1-2) Antimony, cad barium,beryllium, arsenic, NORTH BANKUSGS AT 79THAVENUE, Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Parameter (dissolved) Copper S Medium Priority Site Name(s) onitoring Summary Sampling period:12/22/2010 -12/4/2014 KUNK CREEK 30.422 Miles 15070102-003 Headwaters Fria -Agua River 28 ug/Lacute mg/Lhardness @120 9.6 ug/Lacute @39mg/L hardness Metal Samples least 3seasonsduringanassessment period. Collect moredissolved coppersamples dueto theexceedances. Collectcoreparameters to representat Applicable Standard PBC -Inconclusive •AWE -Inconclusive Use Support MGSKU001.43 Site ID# - Exceedances Copper (dissolved), silver (dissolved) Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) Zinc (dissolved), cadmium(dissolved), copper(dissolved) Copper (dissolved) Kjeldahl nitrogen nitrogen, phosphorus,total (2) Ammonia,nitrite/nitrate, 12/22/2010 101521 Nutrients &Related Samples 7/11/2011 DEQ # Monitoring Recommendations Date Sampling Agency USGS 20 ug/L 40 ug/L Result (2-4) Dissolved oxygen, pH assessment. copper datainthelast3years of AWE isinconclusive. Nodissolved Designated use support comments Designated usesupport Data SharingPartnership Other Samples Category 3 Category Purpose AMRC000906 Inconclusive Middle Gila , pH, AMRC000907 Purpose Attaining some uses Attaining Category 2 Other Samples Ambient Monitoring Designated use supportDesignated comments (1-4) Dissolved oxygen, E. coli oxygen, (1-4) Dissolved solids, bottom dissolved SSC, total deposits, biocriteria FBC is inconclusive with 2 exceedances with 2 exceedances FBC is inconclusive (last 3 outside the assessment window of monitoring). years Middle Gila Water Quality Assessments - 53 Middle Gila Water ADEQ Result Sampling Agency 727 cfu/100 mL cfu/100 727 980 cfu/100 mL 980 cfu/100 Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 100704 (4) Ammonia, nitrite/nitrate, (4) Ammonia, nitrite/nitrate, phosphorus, total nitrogen, Kjeldahl nitrogen Date E. coli None None Mercury (dissolved) Exceedances 9/1/2011 6/12/2012 AWW - Attaining AWW samples due to the exceedances. samples due to Site ID # Site MGSYD009.13 Use SupportUse 235 cfu/100 mL 235 cfu/100 Collect more E. coli Applicable Standard Metal Samples Metal FC - Attaining • FBC - Inconclusive • AGL - Attaining • AGL FBC - Inconclusive • FC - Attaining Tank Canyon - Agua Fria River - Agua Fria Canyon Tank 15070102-024B Miles 17.6 YCAMORE CREEK (SYD) CREEK YCAMORE Sampling period: 9/1/2011 - 6/12/2012 Sampling period: 9/1/2011 onitoring Summary onitoring Site Name(s) Site Priority

Medium

S E. coli

Parameter Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection ABOVE SYCAMORE SYCAMORE ABOVE RANGER STATION (4) Antimony, arsenic, beryllium, cadmium, boron, (4) Antimony, lead, manganese, mercury, copper, chromium, selenium, zinc Needs Data Gaps and Monitoring

M Middle Gila Middle Gila Water Quality Assessments - 54 Parameter E. coli T pH FC -Inconclusive •FBC-Inconclusive •AWW -Inconclusive EMPE TOWN LAKE 220 Acres 15060106B-1588 Applicable Standard 235 cfu/100 mL 9.0 SU Use Support 12/12/2011 11/25/2013 3/12/2012 2/13/2012 1/18/2011 1/23/2012 4/18/2011 1/28/2013 7/22/2013 2/28/2011 2/22/2011 4/25/2011 4/11/2011 1/16/2012 2/14/2011 3/14/2011 2/21/2012 2/27/2012 3/21/2011 3/5/2012 2/6/2012 1/3/2012 5/2/2011 4/4/2011 3/7/2011 Exceedances Date 3630 cfu/100 mL 387 cfu/100 mL 291 cfu/100 mL 9.4 SU 9.5 SU 9.3 SU 9.3 SU 9.5 SU 9.5 SU 9.7 SU 9.5 SU 9.3 SU 9.4 SU 9.3 SU 9.3 SU 9.3 SU 9.3 SU 9.3 SU 9.5 SU 9.6 SU 9.7 SU 9.6 SU 9.6 SU 9.5 SU 9.6 SU Result less than10%. over theentireassessmentperiodwas storm related, andtheexceedance rate FBC isinconclusive. Allexceedances are April, 2016. tois scheduled berefilled by theendof ment ofthedamatwest endand Note: Thelake was drainedfor replace was completely drainedinMarch, 2016. mial), itremainsinconclusive asthelake 26 exceedances in170 samples(bino the lake would have beenimpairedwith AWW andFBCareinconclusive. Although Designated use support comments Designated usesupport Category 3 Category AMRC000908 Inconclusive - - Middle Gila AMRC000909 , pH, solids Purpose Other Samples E. coli Data Sharing Partnership Data Sharing Partnership Data Sharing Partnership Designated use support Designated comments (40-510) (40-510) Middle Gila Water Quality Assessments - 55 Middle Gila Water TEMPE TEMPE TEMPE Result 9.5 SU 9.3 SU 9.3 SU 9.3 SU Sampling Agency pH Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 101316 101315 102452 (38-40) Ammonia, nitrite, (38-40) Ammonia, nitrite, total nitrogen, nitrite/nitrate, Kjeldahl nitrogen Date E. coli, All core parameters All core parameters Lead, selenium - 4/9/2012 3/26/2012 4/23/2012 4/30/2012 Site ID # Site MGTTL-B MGTTL-A MGTTL-MID 9.0 SU Collect core parameters to represent at least 3 seasons during an assessment period. represent at to Collect core parameters Applicable Standard Applicable Metal Samples Metal Sampling period: 7/6/2010 - 12/30/2013 Sampling period: 7/6/2010 onitoring Summaryonitoring Site Name(s) Site Priority Medium

pH

Parameter (Continued) USD DSD Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection Exceedances Needing More Samples to Assess Needing More Samples to Exceedances MID LAKE SITE (31-40) Antimony, arsenic, barium, beryllium, Antimony, (31-40) lead, manga copper, cadmium, chromium, boron, thallium, selenium, silver, nickel, nese, mercury, zinc Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 56 UTARY AND OFMINES DOWNSTREAM OFTRIB cury, selenium,zinc um, chromium, copper, lead,manganese,mer (2-6) Antimony, boron, cadmi beryllium, arsenic, AT BRIDGE ON CROWN KINGROAD CROSSING AT FOREST ROAD 93 NORTH OFCLEATOR Parameter Ammonia Arsenic T Lead Site Name(s) onitoring Summary Sampling period:3/2/2011 -3/2/2015 FC -Inconclusive •FBC-Not Attaining •AGI -Inconclusive URKEY CREEK 21 Miles 15070102-036B Tributary at341928 /1122128 -Poland Creek 0.54 mg/Lchronic & @ pH8.34 0.54 Metal Samples Applicable Standard Temp 29.7C - AGL -Inconclusive •AWW -Not Attaining 15 ug/L 30 ug/L Impairment MGTRK004.33 MGTRK004.42 MGTRK007.28 Site ID# Copper andlead(1992) Status - 3/2/2015 1 8/20/2014 - 7/17/2012 7/17/2012 3/2/2015 Exceedances Date Kjeldahl nitrogen nitrogen, phosphorus,total (2) Ammonia,nitrite/nitrate, 102518 101083 101627 Nutrients &Related Samples DEQ # Sampling Agency 1.97 mg/L 48.9 ug/L 67.3 ug/L 33 ug/L 36 ug/L Result ADEQ ADEQ ADEQ ances in3samples. FBC remainsnot attainingwith3exceed- 3 samples. FBC isinconclusive with1exceedance in AWW isinconclusive with1exceedance. total dissolved solids (2-8) Dissolved oxygen, E.coli Designated use support comments Designated usesupport TMDL Monitoring TMDL Monitoring TMDL Monitoring Category 4A Category Other Samples Purpose AMRC000910 Not attaining , pH, Middle Gila - AMRC000911 Middle Gila Water Quality Assessments - 57 Middle Gila Water , boron, manganese, copper, lead, mercury copper, manganese, , boron, Monitoring Recommendations Monitoring , mercury Impairment Discussion Arsenic, Ammonia E. coli copper (dis pH, cadmium (dissolved), oxygen, dissolved Zinc (dissolved), E. coli solved), Mercury (dissolved) - the effectiveness TMDL implementation strate of determine and copper samples to Collect more lead exceedances. ammonia and arsenicgies. Collect more samples due to Remains not attaining - need more data. Copper and lead TMDL completed in 2006. data. Copper and lead TMDL completed attaining - need more not Remains Priority Medium Missing Core Parameters Missing Core Enough Low Limits Not Lab Detection Exceedances Needing More Samples to Assess Samples to Needing More Exceedances Missing Seasonal Distribution Missing Seasonal Data Gaps and Monitoring Needs Monitoring and Gaps Data M Middle Gila Middle Gila Water Quality Assessments - 58 Data GapsandMonitoring Needs QUATE DUMPS BELOW UPPERPAS- selenium, zinc chromium, copper, lead,manganese,mercury, (2) Antimony, boron, cadmium, beryllium, arsenic, BELOW ADITS Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Parameter (dissolved) Copper U Medium Priority Site Name(s) onitoring Summary Sampling period:3/12/2015 -3/12/2015 nnamed Trib To MineralCr Dry 1.4 Miles 15050100-212 MineralCreek Headwaters -Dry 85.9 ug/Lat400mg/Lhardness Metal Samples least 3seasonsduringanassessment period. Collect moredissolved coppersamplesdueto theexceedance. Collect coreparameters to represent at Applicable Standard PBC -Inconclusive •AWE -Inconclusive Use Support MGUDR001.12 MGUDR001.41 Site ID# Exceedances 3/12/2015 None Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) Copper (dissolved) (0) None 106785 110528 Nutrients &Related Samples Date DEQ # Monitoring Recommendations Sampling Agency 847 ug/L Result ADEQ ADEQ in 1sample. AWE isinconclusive with1exceedance (2) pH Designated use support comments Designated usesupport TMDL Monitoring TMDL Monitoring Other Samples Category 3 Category Purpose AMRC000912 Inconclusive Middle Gila - Impaired AMRC000913 Purpose Category 5 Other Samples TMDL Monitoring Designated use supportDesignated comments (1-3) Dissolved oxygen, pH, total dis pH, total oxygen, (1-3) Dissolved solved solids solved PBC is inconclusive with 2 exceedances with 2 exceedances PBC is inconclusive in 5 samples (binomial). AWE is impaired with 5 exceedances in is impaired with 5 exceedances AWE 5 samples. PBC is inconclusive with 2 exceedances with 2 exceedances PBC is inconclusive in 5 samples (binomial). Middle Gila Water Quality Assessments - 59 Middle Gila Water ADEQ Result 51 ug/L 51 52 ug/L 374 ug/L 374 370 ug/L 370 244 ug/L 244 360 ug/L 290 ug/L 2926 ug/L 3090 ug/L Sampling Agency DEQ # Nutrients & Related Samples Nutrients & Related 109442 Date (0) None Exceedances 9/4/2013 7/15/2014 8/11/2014 7/15/2014 8/11/2014 7/15/2014 8/11/2014 8/30/2013 11/22/2013 - - Status Add copper to the 303(d) list. the to Add copper Site ID # Site MGUEU000.03 PBC - Inconclusive • AWE - Impaired • AWE PBC - Inconclusive Impairment Impairment 15 ug/L 1300 ug/L Applicable Standard Metal Samples Metal 23.1 ug/L @ 99 mg/L hardness 23.1 18.6 ug/L @ 79 mg/L hardness 60.3 ug/L @275 mg/L hardness 60.3 ug/L @275 44.7 ug/L @ 200 mg/L hardness 28.3 ug/L @ 123 mg/L hardness Headwaters - Eugene Gulch - Eugene Headwaters 15070102-1994 Miles 0.71 nnamed Trib To Eugene Gulch Eugene To Trib nnamed Sampling period: 8/30/2013 - 8/11/2014 Sampling period: 8/30/2013 onitoring Summary onitoring Site Name(s) Site

Lead U Copper Copper

(dissolved) Parameter BELOW EUGENE MINE BELOW (2-5) Antimony, arsenic, beryllium, cadmi boron, (2-5) Antimony, lead, manganese, mer copper, um, chromium, selenium, zinc cury,

M Middle Gila Middle Gila Water Quality Assessments - 60 Data GapsandMonitoring Needs Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess Priority High Collect more samples in support ofTMDLdevelopment.Collect moresamplesinsupport Add copperto the303(d)list. None Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) None Lead Impairment Discussion Monitoring Recommendations AMRC000914 Middle Gila Impaired AMRC000915 Purpose Category 5 Other Samples None Middle Gila Water Quality Assessments - 61 Middle Gila Water Sampling Agency Monitoring Recommendations Monitoring o Queen o Queen Cr DEQ # Nutrients & Related Samples Nutrients & Related None Impairment Discussion None All core parameters All core parameters N/A Copper (2010) Status (UQ2) (UQ2) T Site ID # Site Impairment Impairment Remains impaired for copper (2010). Included as part of Queen Creek TMDL. copper (2010). impaired for Remains Collect samples to support TMDL development. Collect samples to Metal Samples Metal Headwaters - Queen Creek - Queen Headwaters 15050100-1000 0.5 Miles nnamed nnamed Trib PBC - Inconclusive • AGL - Inconclusive • AWE - Impaired • AWE Inconclusive - • AGL PBC - Inconclusive Sampling period: No samples onitoring Summary onitoring Site Name(s) Site Priority

Medium

U

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection N/A None Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 62 Data GapsandMonitoring Needs None N/A Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess U Medium Priority Site Name(s) onitoring Summary Sampling period:Nosamples PBC -Inconclusive •AGL -Inconclusive •AWE -Impaired nnamed Tribnnamed 1.7 Miles 15050100-1843 Headwaters (NearKing’sCrown Peak) -QueenCreek Metal Samples Collect samplesto TMDLdevelopment. support Remains impaired for copper(2010). ofQueenCreekTMDL. Includedaspart Impairment Site ID# T (UQ3) Status Copper (2010) N/A All coreparameters All coreparameters None Impairment Discussion None Nutrients &Related Samples DEQ # o Queen Cr o Queen Monitoring Recommendations Sampling Agency None Other Samples Category 5 Category Purpose AMRC000916 Impaired Middle Gila Impaired AMRC000917 Purpose Category 5 Other Samples None Middle Gila Water Quality Assessments - 63 Middle Gila Water Sampling Agency Monitoring Recommendations Monitoring o Queen Cr o Queen DEQ # Nutrients & Related Samples Nutrients & Related None Impairment Discussion None All core parameters All core parameters N/A Copper (2010) Status (UQE) T (UQE) Site ID # Site Impairment Impairment Remains impaired for copper (2010). Included in Queen Creek TMDL project. copper (2010). impaired for Remains Collect samples to support TMDL development. Collect samples to Metal Samples Metal Headwaters - Queen Creek - Queen Headwaters 15050100-991 2.0 Miles nnamed Trib nnamed PBC - Inconclusive • AGL - Inconclusive • AWE - Impaired - Impaired • AWE Inconclusive - • AGL PBC - Inconclusive Sampling period: No samples onitoring Summary onitoring Site Name(s) Site Priority

Medium

U

Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection N/A None Data Gaps and Monitoring Needs Data Gaps and Monitoring

M M Middle Gila Middle Gila Water Quality Assessments - 64 Data GapsandMonitoring Needs (1) Arsenic, cadmium,copper,(1) Arsenic, lead,zinc ABOVE MINES Lab Detection LimitsNot Low Enough Missing SeasonalDistribution Missing CoreParameters Exceedances NeedingMoreSamplesto Assess U Priority Site Name(s) Low onitoring Summary Sampling period:1/30/2015 -1/30/2015 nnamed Trib To Turkey Creek 1.3 Miles 15070102-910 Headwaters -Turkey Creek Metal Samples Collect coreparameters to representatleast3seasonsduring anassessmentperiod. PBC -Inconclusive •AWE -Inconclusive Use Support MGUTR000.22 Site ID# No Exceedances None Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) Zinc (dissolved), pH,cadmium(dissolved), copper(dissolved) None (0) None 104498 Nutrients &Related Samples DEQ # Monitoring Recommendations Sampling Agency ADEQ solved solids (1) Dissolved oxygen, pH,total dis TMDL Monitoring Other Samples Category 3 Category Purpose AMRC000918 Inconclusive - Middle Gila - Inconclusive AMRC000919 Purpose Category 3 Other Samples TMDL Monitoring Designated use supportDesignated comments (1) Dissolved oxygen, pH, total dis pH, total oxygen, (1) Dissolved solved solids solved PBC is inconclusive with 1 exceedance in with 1 exceedance PBC is inconclusive 1 sample. Middle Gila Water Quality Assessments - 65 Middle Gila Water ADEQ Result 24 ug/L 24 Sampling Agency Monitoring Recommendations Monitoring DEQ # Nutrients & Related Samples Nutrients & Related 109183 (0) None Date Lead copper (dissolved) pH, cadmium (dissolved), Zinc (dissolved), copper (dissolved) pH, cadmium (dissolved), Zinc (dissolved), None Exceedances 8/23/2012 Site ID # Site MGWTW002.26 Use SupportUse PBC - Inconclusive • AWE - Inconclusive • AWE PBC - Inconclusive 15 ug/L Collect more lead samples due to the exceedance. Collect core parameters to represent at least 3 sea- to Collect core parameters the exceedance. Collect more lead samples due to sons during an assessment period. Applicable Standard Metal Samples Metal ATERMAN WASH ATERMAN - Gila River Wash Waterman Prong West 15070101-011 Miles 16.547 Sampling period: 8/23/2012 - 8/23/2012 Sampling period: 8/23/2012 onitoring Summary onitoring Low Site Name(s) Site Priority

Lead W

Parameter Exceedances Needing More Samples to Assess Needing More Samples to Exceedances Missing Core Parameters Missing Seasonal Distribution Enough Low Limits Not Lab Detection AT NARRAMORE ROAD NARRAMORE ROAD AT AVENUE AND 214TH (1) Boron, copper, lead, manganese, selenium lead, manganese, copper, (1) Boron, Data Gaps and Monitoring Needs Data Gaps and Monitoring

M