REGION: 10



|REGION: 8 |Desig |Classifications |NUMERIC STANDARDS |TEMPORARY |

| | | | |MODIFICATIONS |

|BASIN: Rio Grande | | | |AND |

| | | | |QUALIFIERS |

| | | |PHYSICAL |INORGANIC |METALS | |

| | | |and |mg/l |ug/l | |

| | | |BIOLOGICAL | | | |

|Stream Segment Description | | | | | | |

| | | | | | | | | | |

|1. All tributaries to the Rio Grande, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Temporary modification: |

|wetlands, within the Weminuche Wilderness Area. |OW |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |As(ch)=hybrid |

| | |Water Supply |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |Expiration date of |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 C | |SO4=WS |CrIII(ch)=TVS |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) C|CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | | | | | |

|2. Mainstem of the Rio Grande, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|tributaries and wetlands, from the source to a point | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|immediately above the confluence with Willow Creek, | |Water Supply |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

|excluding the listings in segments 1 and 3. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 C | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) C|CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|3. Mainstem of Seepage Creek from the outlet of Santa | |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Ni(ac/ch)=TVS |Fish Ingestion |

|Maria Reservoir to a point one mile below the outlet | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS | |

|of Santa Maria Reservoir. Mainstem of North Clear | |Agriculture |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ag(ac)=TVS | |

|Creek from the outlet of Continental Reservoir to a | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

|point immediately above the confluence with Rito Hondo | | |E.Coli=126/100ml | |P=110 ug/l (tot) |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

|Creek. | | |Chla=150 mg/m2 | | |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | | | | | |

|4a. Mainstem of the Rio Grande from a point immediately| |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary Modifications: |

|above the confluence with Willow Creek to a point | |Recreation E |T=TVS(CS-II) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |Type B |

|immediately above the confluence with the South Fork | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Cd(ch)=current condition |

|Rio Grande. | |Agriculture |D.O. (sp)=7.0 mg/l|CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |Pb(ch)=current condition |

| | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS |Zn(ch)=current condition |

| | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) |Expiration Date of |

| | | | | | |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS |6/30/2015 |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | |Temporary modification: |

| | | | | | | | | |As(ch)=hybrid |

| | | | | | | | | |Expiration date of |

| | | | | | | | | |12/31/21. |

| | | | | | | | | |Temporary modification: |

|4b. Mainstem of the Rio Grande from a point immediately| |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |As(ch)=hybrid |

|above the confluence with South Fork Rio Grande to the | |Recreation E |T=TVS(CS-II) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |Expiration date of |

|Hwy 285 crossing. | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |12/31/21. |

| | |Agriculture |D.O. (sp)=7.0 mg/l|CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | | |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | |Temporary modification: |

|4c. Mainstem of the Rio Grande from the Hwy 285 | |Aq Life Warm 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |As(ch)=hybrid |

|crossing to the Rio Grande/Alamosa County line. | |Recreation E |T=TVS(WS-II) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |Expiration date of |

| | |Water Supply |D.O. = 5.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |12/31/21. |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |CrIII(ac)=50(Trec) |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac/ch)=TVS | |

| | | | | |SO4=WS |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|5. All tributaries to the Rio Grande, including all | |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|wetlands, from immediately above the confluence with | |Recreation E |T=TVS(CS-I) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|Willow Creek to Hwy 112 bridge near Del Norte, | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

|excluding the listings in segments 6 through 10. | |Agriculture |D.O. (sp)=7.0 mg/l|CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

| | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|6. Mainstem of West Willow Creek from immediately above| |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|Deerhorn Creek to the Park Regent Mine dump. East | |Recreation E |T=TVS(CS-I) oC |Cl2(ac)=0.019 |NO2=0.05 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|Willow Creek from the confluence with Whited Creek to | | |D.O.= 6.0 mg/l |Cl2(ch)=0.011 |P=110 ug/l (tot) |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

|the confluence with West Willow Creek. | | |D.O.(sp)=7.0 mg/l |CN=0.005 | |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |pH = 6.5-9.0 | | |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | | |Cu(ac/ch)=TVS | | | |

| | | |Chla=150 mg/m2 | | | | | | |

| | | | | | | | | | |

|7. Mainstem of West Willow Creek from the Park Regent | |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |Temporary Modifications |

|Mine dump to the confluence with East Willow Creek. |UP |Recreation E |D.O.= 6.0 mg/l |Cl2(ch)=0.011 |B=0.75 |As(ch)=100(Trec) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |Type B: |

|Mainstem of Willow Creek, including all tributaries | |Agriculture |D.O.(sp)=7.0 mg/l |CN=0.005 |NO2=10 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Ag(ac/ch)=TVS | |

|from the confluence of East and West Willow Creeks, to | | |pH = 6.5-9.0 | |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS |West Willow |

|the confluence with the Rio Grande. | | |E.Coli=126/100ml | |P=110 ug/l (tot) C|CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | |Cd(ac)=163 |

| | | |Chla=150 mg/m2 C | | |CrVI(ac/ch)=TVS | | |Cd(ch)=21.2 |

| | | | | | |Cu(ac/ch)=TVS | | |Cu(ac)=227 |

| | | | | | | | | |Cu(ch)=8.9 |

| | | | | | | | | |Pb(ac)=1014 |

| | | | | | | | | |Pb(ch)=104 |

| | | | | | | | | |Ag(ac)=1.32 |

| | | | | | | | | |Zn(ac)=24000 |

| | | | | | | | | |Zn(ch)=5977 |

| | | | | | | | | | |

| | | | | | | | | |Windy Gulch |

| | | | | | | | | |Cd(ac)=9.1 |

| | | | | | | | | |Cd(ch)=6.3 |

| | | | | | | | | |Cu(ch)=5.8 |

| | | | | | | | | |Zn(ac)=2804 |

| | | | | | | | | |Zn(ch)=1914 |

| | | | | | | | | | |

| | | | | | | | | |Willow |

| | | | | | | | | |Cd(ac)=30.8 |

| | | | | | | | | |Cd(ch)=17.9 |

| | | | | | | | | |Cu(ac)=6.4 |

| | | | | | | | | |Cu(ch)=5.6 |

| | | | | | | | | |Pb(ac)=38.0 |

| | | | | | | | | |Pb(ch)=31.3 |

| | | | | | | | | |Zn(ac)=6763 |

| | | | | | | | | |Zn(ch)=4660 |

| | | | | | | | | | |

| | | | | | | | | |Expiration Date |

| | | | | | | | | |6/30/2015 |

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|8. Mainstem of Goose Creek, including all tributaries | |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|and wetlands, from the source to the confluence with | |Recreation E |T=TVS(CS-I) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|the Rio Grande, excluding the specific listings in | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|segment 1. | |Agriculture |D.O. (sp)=7.0 mg/l|CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|9. Mainstem of the South Fork Rio Grande, including all| |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|tributaries and wetlands, from the source to the | |Recreation E |T=TVS(CS-I) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|confluence with the Rio Grande, excluding the specific | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

|listings in segment 1. | |Agriculture |D.O. (sp)=7.0 mg/l|CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

| | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 C | |P=110 ug/l (tot) C|CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|10. Mainstem of Pinos Creek, including all tributaries | |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|and wetlands, from the source to the confluence with | |Recreation E |T=TVS(CS-I) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|the Rio Grande. | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |D.O. (sp)=7.0 mg/l|CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|11. Mainstem of San Francisco Creek (Rio Grande | |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|County), including all tributaries and wetlands, from | |Recreation E |T=TVS(CS-I) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|the source to a point immediately below the confluence | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

|with Spring Branch. | |Agriculture |D.O.(sp)=7.0 mg/l |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

| | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|12. Mainstem of the Rio Grande from the Rio | |Aq Life Warm 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS | |

|Grande/Alamosa County line to the Old State Bridge east| |Recreation E |T=TVS(WS-II) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

|of Lobatos (Conejos County Road G). | |Agriculture |D.O. = 5.0 mg/l |Cl2(ch)=0.011 |NO2=0.50 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | |E.Coli=126/100ml | | |CrVI(ac/ch)=TVS |Mo(ch)=160(Trec) | | |

| | | | | | |Cu(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | | | | | |

|13. Mainstem of the Rio Grande from Old State Bridge | |Aq Life Warm 1 |T=TVS(WS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|east of Lobotos (Conejos County Road G) to the | |Recreation E |D.O.= 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS | |

|Colorado/New Mexico border. | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

| | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | | | | | |Mo(ch)=160(Trec) | | |

| | | | | | | | | | |

|14. Mainstems of Dry Pole Creek, Limekiln Creek, | |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|Nicomodes Gulch, Raton Creek, and Dry Creek, including | |Recreation E |D.O.=6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|all tributaries and wetlands, within the boundaries of | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

|the Rio Grande National Forest. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|15. All tributaries to the Rio Grande from the Hwy 112 | |Recreation N |D.O.=3.0mg/l |CN=0.2 |S=0.05 |As(ch)=0.02-10(Trec)|Cu(ch)=200(Trec) |Ni(ch)=100(Trec) | |

|bridge near Del Norte to the Colorado/New Mexico |UP |Water Supply |pH=6.5-9.0 |NO2=1.0 |B=0.75 |A |Fe(ch)=WS(dis) |Se(ch)=20(Trec) | |

|border, excluding the listings in segments 11,14 and 16| |Agriculture |E.Coli=630/100ml |NO3=10 |Cl=250 |Be(ch)= 4.0(Trec) |Pb(ac)=50(Trec) |Ag(ac)=100(Trec) | |

|through 31. | | | | |SO4=WS |Cd(ch)= 5.0(Trec) |Mn(ch)=WS(dis) |Zn(ch)=2000(Trec) | |

| | | | | | |CrIII(ac)=50(Trec) |Hg(ch)=2.0(Trec) | | |

| | | | | | |CrVI(ac)=50(Trec) |Mo(ch)=160(Trec) | | |

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| | | | | | | | | | |

| | | | | | | | | | |

|16. All tributaries to the Rio Grande, including | |Aq Life Warm 2 |T=TVS(WS-III) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS | |

|wetlands, within the Alamosa National Wildlife Refuge, |UP |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100(Trec) |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

|excluding the specific listing in segment 12. | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | |Chla=150 mg/m2 | |P=170 ug/l (tot) |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | | | | |CrVI(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|17. All tributaries and wetlands to the Rio Grande, | |Aq Life Warm 2 |T=TVS(WS-II) oC |NH3(ac/ch)=TVS |CN=0.005 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS | |

|including wetlands, within the Monte Vista National | |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |S=0.002 |As(ch)=100(Trec) |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

|Wildlife Refuge. |UP |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |B=0.75 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |NO2=0.05 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | |Chla=150 mg/m2 | |NO3=100 |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | | | |P=170 ug/l (tot) |CrVI(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|18. All wetlands tributary to the Rio Grande from the | |Aq Life Warm 2 |T=TVS(WS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS |Fish Ingestion |

|Hwy 112 bridge near Del Norte to the Colorado/New |UP |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

|Mexico border, excluding the specific listings in | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

|segments 16, 17, 19, 20a, 21a, 21b, 23a, 25, 28, 30 and| | |E.Coli=126/100ml |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

|31. | | | | | |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | | | | |CrVI(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|19. Mainstem of Rock Creek, including all tributaries | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|and wetlands, from the source to the Monte Vista | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|Canal. | |Water Supply |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|20a. Mainstem of Cat Creek, including all tributaries | |Aq Life Cold 1 |May-Sept |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |CrVI(ac/ch)=TVS |Hg(ch)=0.01(Trec) | |

|and wetlands, from the source to the Rio Grande | |Recreation E |TDM=21.7 oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Cu(ac/ch)=TVS |Mn(ac/ch)=TVS | |

|National Forest boundary. | |Agriculture |TMWAT=17.0 oC |Cl2(ch)=0.011 |NO2=0.05 |Be(ch)=100(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

| | | |Oct-Apr |CN=0.005 |NO3=100 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | | |TDM=13.0 oC | |P=110 ug/l (tot) |Cd(ch)=TVS | |Se(ac/ch)=TVS | |

| | | |TMWAT=9.0 oC | | |CrIII(ac/ch)=TVS | |Ag(ac)=TVS | |

| | | |D.O. = 6.0 mg/l | | |CrIII(ch)=100(Trec) | |Ag(ch)=TVS(tr) | |

| | | |D.O.(sp)=7.0 mg/l | | | | |Zn(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 | | | | | | |

| | | |E.Coli=126/100ml | | | | | | |

| | | |Chla=150 mg/m2 | | | | | | |

| | | | | | | | | | |

|20b. Mainstem of Cat Creek from the Rio Grande National| |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|Forest boundary to the Terrace Main Canal. | |Recreation E |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |B=0.75 |As(ch)=7.6 |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | |Agriculture |D.O.(sp)=7.0 mg/l |CN=0.005 |NO2=0.05 |Be(ch)=100(Trec) |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |pH = 6.5-9.0 | |NO3=100 |Cd(ac)=TVS(tr) |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot) |Cd(ch)=TVS |Mo(ch)=160(Trec) |Zn(ac/ch)=TVS | |

| | | |Chla=150 mg/m2 | | |CrIII(ac/ch)=TVS | | | |

| | | | | | |CrIII(ch)=100(Trec) | | | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|21a. Mainstem of Ute Creek, including all tributaries | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|and wetlands, from the source to the crossing at 37.50 | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|oN latitude (WGS84). | |Water Supply |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | |Temporary modification: |

|21b. Mainstem of Ute Creek, including all tributaries | |Aq Life Cold 1 |June-Sept |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |As(ch)=hybrid |

|and wetlands, from the crossing at 37.50 oN latitude | |Recreation E |TDM=22.3 oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |Expiration date of |

|(WGS84) to Hwy 160. | |Water Supply |TMWAT=17.0 oC |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |12/31/21. |

| | |Agriculture |Oct-May |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |T=TVS(CS-I)oC | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |D.O. = 6.0 mg/l | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |D.O. (sp)=7.0 mg/l| |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 | | |Cu(ac/ch)=TVS | | | |

| | | |E.Coli=126/100ml | | | | | | |

| | | |Chla=150 mg/m2 | | | | | | |

| | | | | | | | | | |

|22. Mainstem of Ute Creek from Hwy 160 to the | |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|confluence with Sangre de Cristo Creek. | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02-10(Trec)|Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

| | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |A |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ac)=TVS(tr) |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ac)=50(Trec) | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) |CrIII(ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|23a. Mainstem of Sangre de Cristo Creek, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|tributaries and wetlands, from the source to Hwy 159, | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|excluding the specific listings in segment 23b. | |Agriculture |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot) |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | | |CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | | | | | |

|23b. Mainstem of Sangre de Cristo Creek from a point | |Aq Life Cold 1 |May-Sept |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|immediately below the confluence with Placer Creek to | |Recreation E |TDM=25.3 oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|Hwy 159. | |Agriculture |TMWAT=19.0 oC |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |Oct-Apr |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |TDM=14.7oC | |P=110 ug/l (tot) |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |TMWAT=9.0 oC | | |CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | |D.O. = 6.0 mg/l | | |CrVI(ac/ch)=TVS | | | |

| | | |D.O. (sp)=7.0 mg/l| | | | | | |

| | | |pH = 6.5-9.0 | | | | | | |

| | | |E.Coli=126/100ml | | | | | | |

| | | |Chla=150 mg/m2 | | | | | | |

| | | | | | | | | | |

|24. Mainstem of Sangre de Cristo Creek from Hwy 159 to | |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|the inlet of Smith Reservoir. | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Agriculture |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot) |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | | |CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | | | | | |

|25. Mainstem of Trinchera Creek including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|tributaries and wetlands, from the source to the inlet | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|of Mountain Home Reservoir. | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|26. Mainstem of Trinchera Creek from the outlet of | |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |CN=0.005 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|Mountain Home Reservoir to the Rio Grande. | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |S=0.002 |As(ch)=100(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |B=0.75 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 | |NO2=0.05 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |P=110 ug/l (tot) |CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | | | | | |

|27. Deleted. | | | | | | | | | |

| | | | | | | | | | |

|28. Mainstem of Rito Seco, including all tributaries | |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|and wetlands, from the source to the outlet of Salzar | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|Reservoir. | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|29. Mainstem of Rito Seco from the outlet of Salzar | |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|Reservoir to the confluence with Culebra Creek. | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02-10(Trec)|Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

| | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |A |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ac)=TVS(tr) |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ac)=50(Trec) | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) |CrIII(ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|30. Mainstem of Culebra Creek, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |Temporary modification: |

|tributaries and wetlands, from the source to the | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |As(ch)=hybrid |

|Culebra Sanchez Canal diversion, excluding the specific| |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |Expiration date of |

|listings in segment 31. East Fork and West Fork of | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS |12/31/21. |

|Costilla Creek, including all tributaries and wetlands,| | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

|within Colorado. | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot) |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | |Temporary modification: |

|31. Mainstem of Culebra Creek from the Sanchez Canal | |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) |As(ch)=hybrid |

|Diversion to Hwy 159. Mainstem of Ventero Creek from | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |Expiration date of |

|the Colorado/New Mexico border to the confluence with | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS |12/31/21. |

|Culebra Creek. Mainstem of Costilla Creek, including | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

|all tributaries and wetlands within Colorado, excluding| | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

|the spefic listings for the East and West Forks in | | |Chla=150 mg/m2 C | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

|segment 30. | | | | |P=110 ug/l (tot)C |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|32. All lakes and reservoirs tributary to the Rio | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Hg(ch)=0.01(Trec) | |

|Grande, and within the Weminuche Wilderness Area. |OW |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

| | |Water Supply |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |Chla=8 ug/l (tot)B| |SO4=WS |CrIII(ch)=TVS |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | | | |P=25 ug/l (tot)B |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | | | | | |

|33. All lakes and reservoirs tributary to the Rio | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|Grande from the source to the Hwy 112 bridge near Del | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|Norte, excluding the specific listings in segments 32 | |Water Supply |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|and 38. All lakes and reservoirs tributary to San | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

|Francisco Creek from the source to a point immediately | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

|below the confluence with Spring Branch. | | |Chla=8 ug/l (tot) | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |B | |P=25 ug/l (tot)B |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|34. All lakes and reservoirs tributary to Dry Pole | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|Creek, Limekiln Creek, Nicomodes Gulch, Raton Creek, or| |Recreation E |D.O.=6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|Dry Creek, and within the boundaries of the Rio Grande | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|National Forest. All lakes and reservoirs tributary to| |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

|Rock Creek from the source to the Monte Vista Canal. | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=8 ug/l (tot) | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |B | |P=25 ug/l (tot)B |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|35. All lakes and reservoirs tributary to the Rio | |Aq Life Warm 2 |T=TVS(WL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS |Fish Ingestion |

|Grande from the Hwy 112 bridge near Del Norte to the |UP |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

|Colorado/New Mexico border, excluding the specific | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

|listings in segments 34, 36, 37, 38 and 39. | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | |Chla=20 ug/l (tot)| |P=83 ug/l (tot)B |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | |B | | |CrVI(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|36. All lakes and reservoirs tributary to Ute Creek | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|from the source to Hwy 160. All lakes and reservoirs | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|tributary to Sangre de Cristo Creek, from the source | |Water Supply |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|to Hwy 159. All lakes and reservoirs tributary to | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

|Trinchera Creek from the source to the inlet of | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

|Mountain Home Reservoir. All lakes and reservoirs | | |Chla=8 ug/l (tot) | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

|tributary to Rito Seco from the source to Salzar | | |B | |P=25 ug/l (tot)B |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

|Reservoir. All lakes and reservoirs tributary to | | | | | |Cu(ac/ch)=TVS | | | |

|Culebra Creek from the source to Hwy 159 excluding the | | | | | | | | | |

|specific listing in segment 37. All lakes and | | | | | | | | | |

|reservoirs tributary to Costilla Creek, and within | | | | | | | | | |

|Colorado. | | | | | | | | | |

| | | | | | | | | | |

|37. Sanchez Reservoir. | |Aq Life Warm 1 |T=TVS(WL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

| | |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

| | |Water Supply |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |E.Coli=126/100ml |CN=0.005 |NO3=10 |CrIII(ac)=50(Trec) |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |Chla=20 ug/l (tot)| |Cl=250 |CrIII(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac/ch)=TVS | |

| | | |B | |SO4=WS |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | |P=83 ug/l (tot)B |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|38. Continental Reservoir, Upper Brown Lake, Santa | |Aq Life Cold 1 |T=TVS(CLL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|Maria Reservoir, Road Canyon Reservoir, Rio Grande | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|Reservoir, Big Meadows Reservoir, Beaver Creek | |Water Supply |D.O. (sp)=7.0 mg/l|Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|Reservoir, Smith Reservoir, Mountain Home Reservoir, | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=8 ug/l (tot) | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | |B | |P=25 ug/l (tot)B |CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

|REGION: 8 |Desig |Classifications |NUMERIC STANDARDS |TEMPORARY |

| | | | |MODIFICATIONS |

|BASIN: Alamosa River/La Jara Creek/Conejos River | | | |AND |

| | | | |QUALIFIERS |

| | | |PHYSICAL |INORGANIC |METALS | |

| | | |and |mg/l |ug/l | |

| | | |BIOLOGICAL | | | |

|Stream Segment Description | | | | | | |

| | | | | | | | | | |

|1. All tributaries to the Alamosa River or Conejos River,| |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|including all wetlands, within the South San Juan |OW |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|Wilderness area. | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|2. Mainstem of the Alamosa River, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|tributaries and wetlands, from the source to immediately | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|above the confluence with Alum Creek, except for specific| |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|listings in segments 1, 4a, and 4b. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|3a. Mainstem of the Alamosa River from immediately above | |Aq Life Cold 2 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac)=TVS |Se(ac/ch)=TVS | |

|the confluence with Alum Creek to immediately above the |UP |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100(Trec) |Fe(ch)=12000(Trec) |Ag(ac)=TVS | |

|confluence of Wightman Fork. | |Agriculture |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | |Chla=150 mg/m2 | |P=110 ug/l (tot)|CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | | | | |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | |Seasonal Stds. | | |CrVI(ac)/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | |12/1-2/28 | | | | | | |

| | | |pH=3.52-9.0 | | |Seasonal Stds. | | | |

| | | |3/1-5/31: | | |5/1-6/30 | | | |

| | | |pH=4.0-9.0 | | |Al(ch)=1,157(Trec) | | | |

| | | |6/1-8/31 | | |Al(ch)=95 | | | |

| | | |pH=4.73-9.0 | | |Al(ac)=3,886(Trec) | | | |

| | | |9/1-11/31: | | |Al(ac)=280 | | | |

| | | |pH= 3.94-9.0 | | |7/1-4/30 | | | |

| | | | | | |Al(ch)=3,026(Trec) | | | |

| | | | | | |Al(ch)=4,073 | | | |

| | | | | | |Al(ac)=21,036(Trec) | | | |

| | | | | | |Al(ac)=5,666 | | | |

| | | | | | | | | | |

|3b. Mainstem of the Alamosa River from immediately above | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac)=TVS |Mo(ch)=160(Trec) | |

|the confluence with the Wightman Fork to immediately |UP |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Cu(ch)=30 |Ni(ac/ch)=TVS | |

|above the confluence with Fern Creek. | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Fe(ch)=12000(Trec) |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Pb(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot)|CrIII(ac/ch)=TVS |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | | |CrIII(ch)=100(Trec) |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac)/ch)=TVS | | | |

| | | | | | | | | | |

| | | | | | |Seasonal Stds. | | | |

| | | | | | |5/1-6/30 | | | |

| | | | | | |Al(ch)=1,246(Trec) | | | |

| | | | | | |Al(ch)=41 | | | |

| | | | | | |Al(ac)=4,556(Trec) | | | |

| | | | | | |Al(ac)=59 | | | |

| | | | | | |7/1-4/30 | | | |

| | | | | | |Al(ch)=2,661(Trec) | | | |

| | | | | | |Al(ch)=382 | | | |

| | | | | | |Al(ac)=TVS(Trec) | | | |

| | | | | | |Al(ac)=741 | | | |

| | | | | | | | | | |

|3c. Mainstem of the Alamosa River from immediately above | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |CrVI(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|the confluence with Fern Creek to immediately below the |UP |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Cu(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|confluence with Ranger Creek. | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Fe(ch)=12000(Trec) |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Pb(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot)|CrIII(ac/ch)=TVS |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | | |CrIII(ch)=100(Trec) |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | | | | | | |

| | | | | | |Seasonal Stds. | | | |

| | | | | | |5/1-6/30 | | | |

| | | | | | |Al(ch)=1,973(Trec) | | | |

| | | | | | |Al(ch)=63 | | | |

| | | | | | |Al(ac)=6,729(Trec) | | | |

| | | | | | |Al(ac)=365 | | | |

| | | | | | |7/1-4/30 | | | |

| | | | | | |Al(ch)=2,232(Trec) | | | |

| | | | | | |Al(ch)=296 | | | |

| | | | | | |Al(ac)=TVS(Trec) | | | |

| | | | | | |Al(ac)=558 | | | |

| | | | | | | | | | |

|3d. Mainstem of the Alamosa River from immediately below | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |CrVI(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|the confluence with Ranger Creek to the inlet of Terrace | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Cu(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|Reservoir. | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Fe(ch)=12000(Trec) |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Pb(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot)|CrIII(ac/ch)=TVS |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | | |CrIII(ch)=100(Trec) |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | | | | | | |

| | | | | | |Seasonal Stds. | | | |

| | | | | | |5/1-6/30 | | | |

| | | | | | |Al(ch)=1,721(Trec) | | | |

| | | | | | |Al(ch)=74 | | | |

| | | | | | |Al(ac)=6,907(Trec) | | | |

| | | | | | |Al(ac)=77 | | | |

| | | | | | |7/1-4/30 | | | |

| | | | | | |Al(ch)=1,554(Trec) | | | |

| | | | | | |Al(ch)=60 | | | |

| | | | | | |Al(ac)=TVS(Trec) | | | |

| | | | | | |Al(ac)=84 | | | |

| | | | | | | | | | |

|4a. Mainstems of Iron Creek, Alum Creek, Bitter Creek, | |Recreation E |pH = 2.5-9.0 | | | | | | |

|and Burnt Creek, including all tributaries and wetlands, |UP |Agriculture |E.Coli=126/100ml | | | | | | |

|from their sources to their confluences with the Alamosa | | |Chla=150 mg/m2 | | | | | | |

|River, excluding the listings in segment 4b. | | | | | | | | | |

| | | | | | | | | | |

|4b. Mainstem of Iron Creek from the source to immediately| |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|above the confluence with South Mountain Creek, including| |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|all tributaries and wetlands. | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot)|CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | | |CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | | | | | |

|5. Mainstem of Wightman Fork from the source to the west | |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Se(ac/ch)=TVS | |

|line of S30, T37N, R4E, including all tributaries and | |Recreation E |T=TVS(CS-I) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Fe(ch)=1000(Trec) |Ag(ac)=TVS | |

|wetlands. | |Agriculture |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |D.O.(sp)=7.0 mg/l |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 | |P=110 ug/l (tot)|CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | |E.Coli=126/100ml | | |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | |Chla=150 mg/m2 | | |CrVI(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | | | | | |

|6. Mainstem of Wightman Fork from the west line of S30, |UP |Recreation E |E.Coli=126/100ml | | | | | | |

|T37N, R4E to the confluence with the Alamosa River. | |Agriculture |Chla=150 mg/m2 | | | | | | |

| | | | | | | | | | |

|7. Jasper Creek, including all tributaries and wetlands, | |Aq Life Cold 2 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340(dis) |Fe(ch)=3400 |Se(ch)=20 |All metals are Trec |

|from the source to the confluence with the Alamosa River.|UP |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100 |Pb(ch)=4 |Ag(ch)=0.1 |unless otherwise |

| | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ch)=1 |Mn(ch)=1000 |Zn(ch)=170 |noted. |

| | | |pH = 5.5-9.0 |CN=0.005 |NO3=100 |CrIII(ch)=100 |Hg(ch)=0.05 | | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot)|CrVI(ch)=25 |Mo(ch)=160 | | |

| | | |Chla=150 mg/m2 | | |Cu(ch)=90 |Ni(ch)=5 | | |

| | | | | | | | | | |

|8. Terrace Reservoir. | |Aq Life Cold 2 |T=TVS(CLL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |CrVI(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Fish Ingestion |

| |UP |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

| | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |P=25 ug/l (tot)B|CrIII(ac/ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=8 ug/l (tot) B| | |CrIII(ch)=100(Trec) |Mn(ch)=200(Trec) |Ag(ch)=TVS(tr) | |

| | | | | | | | |Zn(ac/ch)=TVS | |

| | | | | | |Seasonal Stds. | | | |

| | | | | | |5/1-6/30 Near | | | |

| | | | | | |Surface | | | |

| | | | | | |Al(ch)=873(Trec) | | | |

| | | | | | |Al(ac)=TVS(Trec) | | | |

| | | | | | |Al(ch)=59 | | | |

| | | | | | |Al(ac)=159 | | | |

| | | | | | |5/1-6/30 Near Bottom| | | |

| | | | | | |Al(ch)=1,542(Trec) | | | |

| | | | | | |Al(ac)=5,583(Trec) | | | |

| | | | | | |Al(ch)=41 | | | |

| | | | | | |Al(ac)=65 | | | |

| | | | | | |7/1-4/30 Near | | | |

| | | | | | |Surface | | | |

| | | | | | |Al(ch)=102(Trec) | | | |

| | | | | | |Al(ac)=TVS(Trec) | | | |

| | | | | | |Al(ch)=9 | | | |

| | | | | | |Al(ac)=15 | | | |

| | | | | | |7/1-4/30 Near Bottom| | | |

| | | | | | |Al(ch)=227(Trec) | | | |

| | | | | | |Al(ac)=TVS(Trec) | | | |

| | | | | | |Al(ch)=9 | | | |

| | | | | | |Al(ac)=12 | | | |

| | | | | | | | | | |

|9. Mainstem of Alamosa River from the outlet of Terrace | |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |Al(ac/ch)=TVS(Trec) |CrVI(ac/ch)=TVS |Hg(ch)=0.01(Trec) | |

|Reservoir to Hwy 15 (Gunbarrel Road). |UP |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

| | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |As(ch)=7.6(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot)|Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | | |CrIII(ac/ch)=TVS |Mn(ch)=200(Trec) |Ag(ch)=TVS(tr) | |

| | | | | | |CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | | | | | |

|10. Mainstem of the Alamosa River from Hwy 15 (Gunbarrel | |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |Al(ac/ch)=TVS(Trec) |CrVI(ac/ch)=TVS |Hg(ch)=0.01(Trec) | |

|Road) to its point of final diversion. |UP |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

| | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |As(ch)=100(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l (tot)|Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=150 mg/m2 | | |CrIII(ac/ch)=TVS |Mn(ch)=200(Trec) |Ag(ch)=TVS(tr) | |

| | | | | | |CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | | | | | |

|11a. All tributaries, including wetlands, to La Jara | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |CN=0.005 |As(ac)=340 |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|Reservoir. La Jara Creek tributaries and wetlands from | |Recreation E |D.O.= 6.0 mg/l |Cl2(ac)=0.019 |S=0.002 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|the outlet of La Jara Reservoir to a point immediately | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |B=0.75 |Cd(ac)=TVS(tr) |Mn(ac/ch)=TVS |Se(ac/ch)=TVS | |

|below the confluence with Jarosa Creek, excluding the | | |pH = 6.5-9.0 | |NO2=0.05 |Cd(ch)=TVS |Mn(ch)=200(Trec) |Ag(ac)=TVS | |

|listings in segment 11b. | | |E.Coli=126/100ml | |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |P=110 ug/l (tot)|CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | |Fe(ch)=300(dis) | | |

|11b. Mainstem of La Jara Creek from the outlet of La Jara| |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|Reservoir to a point immediately above the confluence | |Recreation E |D.O.= 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|with Hot Creek. All tributaires, including wetlands, to | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Mn(ac/ch)=TVS |Se(ac/ch)=TVS | |

|La Jara Creek from a point immediately below the | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

|confluence with Jarosa Creek to a point immediately above| | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ch)=200(Trec) |Ag(ch)=TVS(tr) | |

|the confluence with Hot Creek. | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|12. Mainstem of La Jara Creek from immediately above the | |Aq Life Warm 2 |T=TVS(WS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) |Fish Ingestion |

|confluence with Hot Creek to the confluence with the Rio| |Recreation E |D.O.=5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|Grande. | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Mn(ch)=200(Trec) |Ag(ac/ch)=TVS | |

| | | |Chla=150 mg/m2 C | |P=170 ug/l (tot)|CrIII(ch)=100(Trec) |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |C |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|13. Mainstem of Hot Creek from the source to the | |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |Temporary |

|confluence with La Jara Creek. | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |modification: |

| | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |As(ch)=hybrid |

| | |Agriculture |pH=6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |Expiration date of |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) |12/31/21 |

| | | |Chla=150 mg/m2 C | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot)C |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|14a. Mainstem of the Conejos River, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |Temporary |

|tributaries and wetlands, from the source to immediately | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |modification: |

|below the confluence with Elk Creek, excluding the | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |As(ch)=hybrid |

|specific listings in segment 1. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |Expiration date of |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) |12/31/21. |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | |Temporary |

|14b. Mainstem of the Conejos River, including all | |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |modification: |

|tributaries and wetlands, from a point immediately below | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |As(ch)=hybrid |

|the confluence with Elk Creek to a point immediately | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |Expiration date of |

|above the confluence with Fox Creek. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|15. Mainstem of the Conejos River from a point | |Aq Life Cold1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |Temporary |

|immediately above the confluence with Fox Creek to the | |Recreation E |T=TVS(CS-II) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |modification: |

|confluence with the San Antonio River. | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |As(ch)=hybrid |

| | |Agriculture |D.O. (sp)=7.0 mg/l |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |Expiration date of |

| | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) |12/31/21. |

| | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | |Chla=150 mg/m2 C | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot)C |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|16. Mainstem of the Conejos River from the confluence | |Aq Life Warm 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS | |

|with the San Antonio River to the confluence with the Rio| |Recreation E |T=TVS(WS-II) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

|Grande. | |Agriculture |D.O. = 5.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Mn(ch)=1000 |Zn(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=TVS(Trec) | | |

| | | |E.Coli=126/100ml | | |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | | | | |CrVI(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|17a. Mainstem of Rio de Los Pinos, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |Temporary |

|tributaries and wetlands within Colorado, excluding the | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |modification: |

|specific listings in segment 1. | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |As(ch)=hybrid |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |Expiration date of |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) |12/31/21. |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | |Temporary |

|17b. Mainstem of the Rio San Antonio from the | |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |modification: |

|Colorado/New Mexico border to Hwy 285. | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |As(ch)=hybrid |

| | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |Expiration date of |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|18. Mainstem of the Rio San Antonio from Hwy 285 to | |Aq Life Warm 2 |T=TVS(WS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS |Fish Ingestion |

|the confluence with the Conejos River. | |Recreation E |D.O.=5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Mn(ch)=1000 |Zn(ac/ch)=TVS | |

| | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | |Chla=150 mg/m2 C | |P=170 ug/l |CrIII(ch)=100(Trec) |Mo(ch)=160(Trec) | | |

| | | | | |(tot)C |CrVI(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|19. Mainstem of the Rio Chama, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|tributaries and wetlands within Colorado, excluding the | |Recreation E |D.O.=6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|specific listings in segment 1. | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|20. All tributaries and wetlands to the Alamosa River, | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |Temporary |

|La Jara Creek, or the Conejos River within the boundaries| |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |modification: |

|of the Rio Grande National Forest excluding the specific | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |As(ch)=hybrid |

|listings in segments 1 through 7, 11a, 11b, 13, 14a, 14b,| |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |Expiration date of |

|17a,17b and18. | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) |12/31/21. |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l (tot)|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|21. All tributaries to the Conejos River from a point | |Recreation N |D.O. =3.0 mg/l |CN=0.2 |S=0.05 |As(ch)=0.02-10(Trec)|Cu(ch)=200(Trec) |Mo(ch)=160(Trec) | |

|immediately above the confluence with Fox Creek to the |UP |Water Supply |pH = 6.5-9.0 |NO2=1.0 |B=0.75 |A |Fe(ch)=WS(dis) |Ni(ch)=100(Trec) | |

|Rio Grande. | |Agriculture |E.Coli=630/100ml |NO3=10 |Cl=250 |Be(ch)=4.0(Trec) |Pb(ac)=50(Trec) |Se(ch)=20(Trec) | |

| | | | | |SO4=WS |Cd(ch)=5.0(Trec) |Mn(ch)=WS(dis) |Ag(ac)=100(Trec) | |

| | | | | | |CrIII(ac)=50(Trec) |Mn(ch)=200(Trec) |Zn(ch)=2000(Trec) | |

| | | | | | |CrVI(ac)=50(Trec) |Hg(ch)=2.0(Trec) | | |

| | | | | | | | | | |

|22. All tributaries, including wetlands, to the |UP |Aq Life Warm 2 |T=TVS(WS-III) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|Alamosa River or La Jara Creek, excluding the specific | |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|listings in segments 1 through 21. | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Mn(ac/ch)=TVS |Ag(ac/ch)=TVS | |

| | | |Chla=150 mg/m2 | |P=170 ug/l (tot)|CrIII(ch)=100(Trec) |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | | | | | |

|23. All lakes and reservoirs tributary to the Alamosa | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|River or the Conejos River, and within the South San Juan|OW |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|Wilderness area. | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=25 ug/l (tot)B|CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|24. All lakes and reservoirs tributary to the Alamosa | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

|River from the source to a point immediately above the | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|confluence with Alum Creek, excluding the specific | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|listings in segment 23. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=25 ug/l (tot)B|CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|25. All lakes and reservoirs tributary to La Jara | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |CN=0.005 |As(ac)=340 |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

|Creek from the source to a point immediately above the | |Recreation E |D.O.= 6.0 mg/l |Cl2(ac)=0.019 |S=0.002 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

|confluence with Hot Creek. | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |B=0.75 |Cd(ac)=TVS(tr) |Mn(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 | |NO2=0.05 |Cd(ch)=TVS |Mn(ch)=200(Trec) |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |Chla=8 ug/l (tot)B | |P=25 ug/l (tot)B|CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|26. All lakes and reservoirs tributary to the Conejos | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|River from the source to a point immediately above the | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|confluence with Fox Creek, excluding the specific | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|listings in segments 23 and 30. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=25 ug/l (tot)B|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|27. All lakes and reservoirs tributary to the Rio de Los | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|Pinos and within Colorado, excluding the specific | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|listings in segment 23. All lakes and reservoirs | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|tributary to the Rio Chama and within Colorado, excluding| |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

|the specific listings in segment 23. | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=25 ug/l (tot)B|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|28. All lakes and reservoir tributary to the Alamosa | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|River, La Jara Creek, or Conejos River, and within the | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|boundaries of the Rio Grande National Forest, excluding | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|the specific listings in segments 23 through 27. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=25 ug/l (tot)B|CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|29. All lakes and reservoirs tributary to the Alamosa |UP |Aq Life Warm 2 |T=TVS(WL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|River, La Jara Creek, or Conejos River, excluding the | |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|specific listings in segments 23 through 28, and 30. | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=20 ug/l (tot)B| |P=83 ug/l (tot)B|CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | | | | |CrIII(ch)=100(Trec) | |Zn(ac/ch)=TVS | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | | | | | |

|30. Platoro Reservoir. | |Aq Life Cold 1 |T=TVS(CLL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Hg(ch)=0.01(Trec) | |

| | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

| | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Se(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS | |Ag(ch)=TVS(tr) | |

| | | | | |P=25 ug/l (tot)B|CrVI(ac/ch)=TVS | |Zn(ac/ch)=TVS | |

| | | | | | |Cu(ac/ch)=TVS | | | |

|REGION: 8 |Desig |Classifications |NUMERIC STANDARDS |TEMPORARY |

| | | | |MODIFICATIONS |

|BASIN: Closed Basin-San Luis Valley | | | |AND |

| | | | |QUALIFIERS |

| | | |PHYSICAL |INORGANIC |METALS | |

| | | |and |mg/l |ug/l | |

| | | |BIOLOGICAL | | | |

|Stream Segment Description | | | | | | |

| | | | | | | | | | |

|1. All tributaries to the Closed Basin, including all | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|wetlands, within the La Garita Wilderness Area. |OW |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | |Agriculture |pH=6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec)|Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|2a. Mainstem of La Garita Creek, including all tributaries | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|and wetlands, from the source to a point immediately below | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|the confluence with Geronimo Creek. The North, Middle, and | |Water Supply |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|South Forks of Carnero Creek, including all tributaries and | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

|wetlands, from their sources to their confluences at the | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec)|Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

|inception of the mainstem of Carnero Creek. | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|2b. Mainstem of La Garita Creek, including all tributaries | |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|and wetlands, from a point immediately below the confluence | |Recreation E |T=TVS(CS-II) oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|with Geronimo Creek to 38 Road. All tributaries to the | |Water Supply |D.O. = 6.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|mainstem of Carnero Creek from its inception at the | |Agriculture |D.O. (sp)=7.0 mg/l |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

|confluence of the North, Middle, and South Forks to 42 Road, | | |pH = 6.5-9.0 | |Cl=250 |CrIII(ac)=50(Trec)|Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

|excluding the specific listings in segment 2a. | | |E.Coli=126/100ml | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | |Chla=150 mg/m2 | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|2c. Mainstem of Carnero Creek from its inception at the | |Aq Life Cold 1 | |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|confluence of the North, Middle, and South Forks to 42 Road. | |Recreation E |Apr-Oct |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Water Supply |TDM=26.5 oC |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | |Agriculture |TMWAT=20.0 oC |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |Nov-Mar | |Cl=250 |CrIII(ac)=50(Trec)|Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |TDM=13.0oC | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | |TMWAT=9.0 oC | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | |D.O. = 6.0 mg/l | |(tot) |Cu(ac/ch)=TVS | | | |

| | | |D.O. (sp)=7.0 mg/l | | | | | | |

| | | |pH = 6.5-9.0 | | | | | | |

| | | |E.Coli=126/100ml | | | | | | |

| | | |Chla=150 mg/m2 | | | | | | |

| | | | | | | | | | |

|3. All tributaries to the Closed Basin excluding the listings| |Aq Life Warm 1 |T=TVS(WS-II) oC |NH3(ac/ch)=TVS |B=0.75 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|in segments 2a, 2b, 2c, and 4 through 13. | |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |NO2=0.05 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Water Supply |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO3=10 |Cd(ac/ch)=TVS |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | |Agriculture |E.Coli=126/100ml |CN=0.005 |Cl=250 |CrIII(ac)=50(Trec)|Mn(ch)=WS(dis) |Ag(ac/ch)=TVS | |

| | | |Chla=150 mg/m2 C |S=0.002 |SO4=WS |CrIII(ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | | | |P=170 ug/l |CrVI(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | | | |(tot)C |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|4. Mainstem of San Luis Creek, including all tributaries and | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |Temporary |

|wetlands, from the source to a point immediately below the | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |modification: |

|confluence with Piney Creek, excluding the specific listings | |Water Supply |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |As(ch)=hybrid |

|in segments 8, 9a and 9b. Garner Creek, including all | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |Expiration date of |

|tributaries and wetlands, from the Rio Grande Forest Boundary| | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec)|Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) |12/31/21. |

|to ithe mouth. | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|5. Mainstem of San Luis Creek from a point immediately below | |Aq Life Cold 2 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

|the confluence with Piney Creek to the inlet to San Luis | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|Lake. | |Agriculture |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Mn(ac/ch)=TVS |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |P=110 ug/l |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |(tot) |CrIII(ch)=100(Trec| |Zn(ac/ch)=TVS | |

| | | | | | |) | | | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | | | | | |

|6. Deleted. | | | | | | | | | |

| | | | | | | | | | |

|7. Deleted. | | | | | | | | | |

| | | | | | | | | | |

|8. Mainstem of Kerber Creek, including all tributaries and | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS | |

|wetlands from the source to a point immediately above the | |Recreation E |D.O.=6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ag(ac)=TVS | |

|Cocomongo Mill site. Mainstem of Squirrel Creek from the | |Agriculture |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

|source to immediately above Bear Creek, Brewery Creek from | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |Cd(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

|source to Kerber Creek, and the mainstem of Elkhorn Gulch. | | |E.Coli=126/100ml | |P=110 ug/l |CrIII(ac/ch)=TVS |Mo(ch)=160(Trec) | | |

| | | |Chla=150 mg/m2 | |(tot) |CrIII(ch)=100(Trec|Ni(ac/ch)=TVS | | |

| | | | | | |) | | | |

| | | | | | |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|9a. Mainstem, tributaries and wetlands of Kerber Creek, | |Recreation E |D.O.=3.0 mg/l | |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Se(ch)=20 |*Goal Qualifier: All|

|including all tributaries and wetlands,from the source to |UP |Water Supply* |pH = 6.5-9.0 | |B=0.75 |As(ch)=0.02-10 A |Pb(ac)=50 |Ag(ch)=50 |metals are Trec |

|immediately above the confluence of Brewery Creek, excluding | |Agriculture* |E.Coli=126/100ml | |NO2=1.0 |Cd(ac)=5 |Mn(ch)=WS(dis) |Zn(ch)=5000 |unless otherwise |

|the specific listings in segment 8. | | |Chla=150 mg/m2 | |NO3=10 |CrIII(ac)=50 |Hg(ch)=2.0(tot) | |noted. |

| | | | | |Cl=250 |CrVI(ac)=50 |Mo(ch)=160 | | |

| | | | | |SO4=WS |Cu(ch)=1000 | | | |

| | | | | | | | | | |

|9b. Mainstem of Kerber Creek from a point immediately above | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000 |Ni(ac/ch)=TVS |*Goal Qualifier: All|

|the confluence with Brewery Creek to the confluence with San|UP |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02 |Fe(ch)=300(dis) |Se(ac/ch)=TVS |metals are Trec |

|Luis Creek. | |Water Supply* |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |CrIII(ac)=50 |Pb(ac/ch)=TVS |Ag(ac)=TVS |unless otherwise |

| | |Agriculture* |pH = 6.5-9.0 |CN=0.005 |NO3=10 |CrIII(ch)=TVS |Mn(ch)=WS(dis) |Ag(ch)=TVS(tr) |noted. |

| | | |E.Coli=126/100ml | |Cl=250 |CrVI(ac/ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS |Temporary |

| | | |Chla=150 mg/m2 | |SO4=WS |Cu(ac/ch)=TVS |Hg(ch)=0.01 | |modification: |

| | | | | |P=110 ug/l | |Mo(ch)=160 | |As(ch)=hybrid |

| | | | | |(tot) | | | |Expiration date of |

| | | | | | | | | |12/31/21. |

| | | | | | | | | |

| | | | | | |Cd(ac)=e(0.7852ln[hard]-1.545) | | |

| | | | | | |Cd(ch)=e(0.7852ln[hard]-2.906) | | |

| | | | | | |Cu(ac)=e(0.8889ln[hard]+0.53) | | |

| | | | | | |Cu(ch)=e(0.8889ln[hard]-1.519) | | |

| | | | | | |Zn(ac)=e(0.8179ln[hard]+3.757) | | |

| | | | | | |Zn(ch)=e(0.8179ln[hard]+2.907) | | |

| | | | | | | | | | |

|10. Mainstem of Sand Creek, including all tributaries and | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=210(Trec)N| |

|wetlands, from the source to the mouth. Mainstem of Medano |OW |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |i(ac/ch)=TVS | |

|Creek, including all tributaries and wetlands, from the | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|source to the mouth. | |Agriculture |pH=6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|11. All tributaries to the Closed Basin within the Rio Grande| |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |Temporary |

|National Forest boundaries except segments 1, 2a, 2b, 2c, 4, | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |modification: |

|9a, 9b, 10, 12a and 12b. | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |As(ch)=hybrid |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |Expiration date of |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) |12/31/21. |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|12a. Mainstem of Saguache Creek, including all tributaries | |Aq Life Cold 1 |T=TVS(CS-I) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |Temporary |

|and wetlands, from the boundary of the La Garita Wilderness | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |modification: |

|Area to a point just below the confluence Ford Creek, | |Water Supply |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |As(ch)=hybrid |

|excluding the specific listings in segment 1. | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |Expiration date of |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) |12/31/21. |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | |Temporary |

|12b. Mainstem of Saguache Creek, including all tributaries | |Aq Life Cold 1 |T=TVS(CS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) |modification: |

|and wetlands, from a point just below the confluence with | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS |As(ch)=hybrid |

|Ford Creek to Hwy 285. | |Water Supply |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS |Expiration date of |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS |12/31/21. |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=150 mg/m2 | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=110 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|13. Mainstem of Saguache Creek from Hwy 285 to the confluence| |Aq Life Warm 2 |T=TVS(WS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|with San Luis Creek. Mainstem of Russel Creek. Mainstem of |UP |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02-10(Trec|Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|Cottonwood Creek downstream of the Rio Grande National Forest| |Water Supply |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.50 |)A |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|Boundary. | |Agriculture |E.Coli=126/100ml |CN=0.005 |NO3=10 |Cd(ac/ch)=TVS |Mn(ch)=WS(dis) |Ag(ac/ch)=TVS | |

| | | |Chla=150 mg/m2 | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | | | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | | | |P=170 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot) |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|14. All wetlands tributary to the Closed Basin, excluding the| |Aq Life Warm 2 |T=TVS(WS-II) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Se(ac/ch)=TVS | |

|specific listings in segments 1 through 13. |UP |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100(Trec) |Pb(ac/ch)=TVS |Ag(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | |E.Coli=126/100ml |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | | | | |CrIII(ch)=100(Trec)|Mo(ch)=160(Trec) | | |

| | | | | | |CrVI(ac/ch)=TVS |Ni(ac/ch)=TVS | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|15. All lakes and reservoirs tributary to the Closed Basin, | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|and within the La Garita Wilderness Area. |OW |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Water Supply |D.O.(sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | |Agriculture |pH=6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=25 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot)B |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|16. All lakes and reservoirs tributary to La Garita Creek | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|from the source to 38 Road. All lakes and reservoirs | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|tributary to Carnero Creek from the source to 42 Road. All | |Water Supply |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

|lakes and reservoirs tributary to Kerber Creek from the | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

|source to a point immediately above the Cocomongo Mill site. | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

|All lakes and reservoirs tributary to San Luis Creek, from | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

|the source to a point immediately below the confluence with | | | | |P=25 ug/l |CrVI(ac/ch)=TVS | | | |

|Piney Creek. All lakes and reservoirs tributary to Saguache | | | | |(tot)B |Cu(ac/ch)=TVS | | | |

|Creek from the boundary of the La Garita Wilderness Area to | | | | | | | | | |

|Hwy 285. | | | | | | | | | |

| | | | | | | | | | |

| | | | | | | | | | |

|17. All lakes and reservoirs within the Closed Basin and | |Aq Life Cold 1 |T=TVS(CL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|within the Rio Grande National Forest boundaries, excluding | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=0.02(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

|the specific listings in segments 15 and 16. | |Water Supply |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac)=TVS(tr) |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | |Agriculture |pH = 6.5-9.0 |CN=0.005 |NO3=10 |Cd(ch)=TVS |Mn(ch)=WS(dis) |Ag(ac)=TVS | |

| | | |E.Coli=126/100ml | |Cl=250 |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Ag(ch)=TVS(tr) | |

| | | |Chla=8 ug/l (tot)B | |SO4=WS |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | | | |P=25 ug/l |CrVI(ac/ch)=TVS | | | |

| | | | | |(tot)B |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|18. All lakes and reservoirs within the Closed Basin, | |Aq Life Warm 2 |T=TVS(WL) oC |NH3(ac/ch)=TVS |B=0.75 |As(ac)=340 |Fe(ch)=WS(dis) |Mo(ch)=160(Trec) | |

|excluding the specific listings in segments 16,17, 19 and 20.| |Recreation E |D.O. = 5.0 mg/l |Cl2(ac)=0.019 |NO2=0.05 |As(ch)=0.02-10(Trec|Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Water Supply |pH = 6.5-9.0 |Cl2(ch)=0.011 |NO3=10 |)A |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | |Agriculture |E.Coli=126/100ml |CN=0.005 |Cl=250 |Cd(ac/ch)=TVS |Mn(ch)=WS(dis) |Ag(ac/ch)=TVS | |

| | | |Chla=20 ug/l (tot)B |S=0.002 |SO4=WS |CrIII(ac)=50(Trec) |Mn(ac/ch)=TVS |Zn(ac/ch)=TVS | |

| | | | | |P=83 ug/l |CrIII(ch)=TVS |Hg(ch)=0.01(Trec) | | |

| | | | | |(tot)B |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac/ch)=TVS | | | |

| | | | | | | | | | |

|19. San Luis Lake. | |Aq Life Cold 1 |Apr-Dec |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Fe(ch)=1000(Trec) |Mo(ch)=160(Trec) | |

| | |Recreation E |TMWAT=21.2 oC |Cl2(ac)=0.019 |B=0.75 |As(ch)=7.6(Trec) |Pb(ac/ch)=TVS |Ni(ac/ch)=TVS | |

| | |Agriculture |Jan-Mar |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Mn(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |TMWAT=TVS(CLL) oC |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Hg(ch)=0.01(Trec) |Ag(ac/ch)=TVS | |

| | | |D.O. = 6.0 mg/l | |P=25 ug/l |CrIII(ch)=100(Trec)| |Zn(ac/ch)=TVS | |

| | | |D.O. (sp)=7.0 mg/l | |(tot)B |CrVI(ac/ch)=TVS | | | |

| | | |pH = 6.5-9.0 | | |Cu(ac/ch)=TVS | | | |

| | | |E.Coli=126/100ml | | | | | | |

| | | |Chla=8 ug/l (tot)B | | | | | | |

| | | | | | | | | | |

|20. Head Lake. | |Aq Life Cold 2 |T=TVS(CLL) oC |NH3(ac/ch)=TVS |S=0.002 |As(ac)=340 |Cu(ac/ch)=TVS |Mo(ch)=160(Trec) | |

| | |Recreation E |D.O. = 6.0 mg/l |Cl2(ac)=0.019 |B=0.75 |As(ch)=100(Trec) |Fe(ch)=1000(Trec) |Ni(ac/ch)=TVS | |

| | |Agriculture |D.O. (sp)=7.0 mg/l |Cl2(ch)=0.011 |NO2=0.05 |Cd(ac/ch)=TVS |Pb(ac/ch)=TVS |Se(ac/ch)=TVS | |

| | | |pH = 6.5-9.0 |CN=0.005 |NO3=100 |CrIII(ac/ch)=TVS |Mn(ac/ch)=TVS |Ag(ac/ch)=TVS | |

| | | |E.Coli=126/100ml | |P=25 ug/l |CrIII(ch)=100(Trec)|Hg(ch)=0.01(Trec) |Zn(ac/ch)=TVS | |

| | | |Chla=8 ug/l (tot)B | |(tot)B |CrVI(ac/ch)=TVS | | | |

| | | | | | |Cu(ac)=TVS | | | |

STREAM CLASSIFICATIONS and WATER QUALITY STANDARDS – FOOTNOTES

(A) Whenever a range of standards is listed and referenced to this footnote, the first number in the range is a strictly health-based value, based on the Commission’s established methodology for human health-based standards. The second number in the range is a maximum contaminant level, established under the federal Safe Drinking Water Act that has been determined to be an acceptable level of this chemical in public water supplies, taking treatability and laboratory detection limits into account. Control requirements, such as discharge permit effluent limitations, shall be established using the first number in the range as the ambient water quality target, provided that no effluent limitation shall require an “end-of-pipe” discharge level more restrictive than the second number in the range. Water bodies will be considered in attainment of this standard, and not included on the Section 303(d) List, so long as the existing ambient quality does not exceed the second number in the range.

(B) Total phosphorus and chlorophyll a standards apply only to lakes and reservoirs larger than 25 acres surface area.

(C) Total phosphorus and chlorophyll a standards apply only above the facilities listed at 36.5(4).

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