2010-02-15_HYDROLOGY - M2007044 - Laserfiche WebLink

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.�i•6(4) STREAM CLASSIFICATIONS and WATER QUALITY STANDARDS REGION:10 Desig Classifications NUMERIC STANDARDS TEMPORARY PHYSICAL INORGANIC METALS MODIFICATIONS BASIN: Lower Dolores River and AND Stream Segment Description BIOLOGICAL mgA ugA QUALIFIERS 1. Mainstem of the Dolores River from the bridge at Bradfield Aq Life Cold 1 D.O.=6.0 mgA NH3(ac/ch)=TVS S=0.002 As(ac)=340 Fe(ch)=WS(dis) Ni(ac/ch)=TVS Ranch(Forest Route 505,near Montezuma/Dolores County Recreation E D.O.(sp)=7.0 mgA Cl2(ac)=0.019 B=0.75 As(ch)=0.02(Trec) Fe(ch)=1000(Trec) Se(ac/ch)=TVS Line)to the Little Gypsum Valley Bridge at the San Water Supply pH=6.5-9.0 Cl2(ch)=0.011 NO2=0.05 Cd(ac)=TVS(tr) Pb(ac/ch)=TVS Ag(ac)=TVS Miguel/Montrose County Line. Agriculture E.Coli=126/100mi CN=.005 NO3=10 Cd(ch)=TVS Mn(ac/ch)=TVS Ag(ch)=TVS(tr) CI=250 Crlll(ac)=50(Trec) Mn(ch)=WS(dis) U(ac)=TVS SOa=WS CrVI(ac/ch)=TVS Hg(ch)=0.01(tot) U(ch)=30 Cu ac/ch=TVS Zn ac/ch=TVS 2. Mainstem of the Dolores River from the Little Gypsum Valley Aq Life Warm 1 D.O.=5.0 mgA NH3(ac/ch)=TVS S=0.002 As(ac)=340 Fe(ch)=1000(Trec) Se(ac/ch)=TVS Temporary Bridge at the San Miguel/Montrose County line,to the Recreation E pH=6.5-9.0 Cl2(ac)=0.019 B=0.75 As(ch)=7.6(Trec) Pb(ac/ch)=TVS Ag(ac)=TVS Modification: Colorado/Utah border. Agriculture E.Coli=126/100ml Cl2(ch)=0.011 NO2=0.5 Cd(ac/ch)=TVS Mn(ac/ch)=TVS Ag(ch)=TVS NH3(ac/ch)=TVS(old) CN=.005 NO3=100 Crlll(ac)=TVS Hg(ch)=0.01(tot) U(ac/ch)=TVS expiration date of CrVI(adch)=TVS Ni(ac/ch)=TVS Zn(ac/ch)=TVS 12/31/2011. Cu aGch=TVS 3a. All tributaries to the Dolores River,including all lakes, Aq Life Warm 2 D.O.=5.0 mgA CN(ac)=0.2 B(ch)=0.75 As(ch)=100(Trec) CrVI(ch)=100(Trec) Ni(ch)=200(Trec) reservoirs and wetlands,from the bridge at Bradfield Ranch Recreation E pH=6.5-9.0 NO2(ac)=10 Be(ch)=100(Trec) Cu(ch)=200(Trec) Se(ch)=20(Trec) (Forest Route 505,near Montezuma/Dolores County Line)to UP Agriculture E.Coli=126/100mi NO3(ac)=100 Cd(ch)=10(Trec) Pb(ch)=100(Trec) Zn(ch)=2000(Trec) the Colorado/Utah border,except for speck listings in CAII(ch)=100(Trec) Mn(ch)=200(Trec) Segments 3b,4 and 5. 3b. Mainstem and all tributaries to Salt Creek,including all lakes, Aq Life Warm 2 D.O.=5.0 mgA NH3(ac/ch)=TVS S=0.002 As(ac)=340 Cu(ac/ch)=TVS Se(ac)=23.4 reservoirs and wetlands form the source within the Sinbad Recreation E pH=6.5-9.0 Cl2(ac)=0.019 B(ch)=0.75 As(ch)=100(Trec) Fe(ch)=1000(Trec) Se(ch)=21.4 Valley to the confluence with the Dolores River. UP Agriculture E.Coli=126/100mi Cl2(ch)=0.011 NO2=0.5 Cd(ac/ch)=TVS Pb(ac/ch)=TVS Ag(ac)/(ch)=TVS CN=.005 NO3=100 Crlll(ac/ch)=TVS Mn(ac/ch)=TVS U(adch)=TVS CrVI(ac/ch)=TVS Hg(ch)=0.01(tot) Zn(ac)=1420 Ni ac/ch=TVS Zn ch=908 4. Mainstem of West Paradox Creek from the source to the Aq Life Warm 2 D.0.=5.0 mgA NH3(ac/ch)=TVS S=0.002 As(ac)=340 Fe(ch)=1000(Trec) Se(ac/ch)=TVS confluence with the Dolores River. Mainstem and all tributaries Recreation E pH=6.5-9.0 Cl2(ac)=0.019 B=0.75 As(ch)=100(Trec) Pb(ac/ch)=TVS Ag(ac)=TVS to Blue Creek from the source to the confluence with the Agriculture E.Coli=126/100ml Cl2(ch)=0.011 NO2=0.5 Cd(ac/ch)=TVS Mn(ac/ch)=TVS Ag(ch)=TVS Dolores River. CN=.005 N%=100 Crlll(ac/ch)=TVS Hg(ch)=0.01(tct) U(ac/ch)=TVS CrVI(ac/ch)=TVS Ni(ac/ch)=TVS Zn(ac/ch)=TVS Cu ac/ch=TVS 5. Mainstem of West Creek from the source to the confluence with Aq Life Cold 1 D.O.=6.0 mgA NH3(ac/ch)=TVS S=0.002 As(ac)=340 Fe(ch)=WS(dis) Ni(ac/ch)=TVS the Dolores River;Roc Creek;La Sal Creek and Mesa Creek Recreation E D.O.(sp)=7.0 mg/I Cl2(ac)=0.019 B=0.75 As(ch)=0.021Trec) Fe(ch)=1000(Trec) Se(ac/ch)=)TVS from their sources to their confluences with Dolores River. Water Supply pH=6.5-9.0 Cl2(ch)=0.011 NO2=0.05 Cd(ac)=TVS(tr) Pb(ac/ch)=TVS Ag(ac)=TVS Agriculture E.Coli=126/100mi CN=.005 NO3=10 Cd(ch)=TVS Mn(ac/ch)=TVS Ag(ch)=TVS(tr) CI=250 Crlll(ac)=50(Trec) Mn(ch)=WS(dis) U(ac)=TVS SOa=WS CrVI(actch)=TVS Hg(ch)=0.01(tot) U(ch)=30 Cu(ac/ch)=TVS Zn(ac/ch)=TVS -13-