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Table 15 (CONTI: Stream classifications and water quality standards, Colorado Numeric Standards Temporary ModifICations Qua1ifiers- Basin: Piedra River Stream ment Descri tion Inorganic n Metals n --De' Classifications . al -and Bioi icsl 7. "Hatcher lake. Stevens lake. Pagosa lake, Village lake and Forest lake." Aq life Wann 1 Recreation 2 Water Supply Agriculture UP D.O. = 5.0 mgn pH = 6.5-9.0 F. Coli = 2000J100ml NH3 (ae) = TVS NH3 (ch) = 0.06 CI2 Cae) = 0.019 Cl2 (chI = 0.011 CN = 0.005 5 = 0.002 B = 0.25 N02 = 0.5 N03 = 10 CI == 250 S04 = 250 Aa Cac. = 50 CTrec) Cd (ac/ch) = TVS Crill (ac. = 50 (Trec) CrVI Cae/chi = TVS Cu (ae/ch) = TVS Fe (ch) == 300 Cdial Fe (chi = 1000 (Trec) Pb lee/ch) = TVS Mn (ch) = 50 (dis) Mn Ich) = 1000 CTree) Hg (ch) = 0.01 CTrec) Nl (ac/ch) = lVS Se lac) = 10 (Trec) Ag (ac/ch) = TVS Zn lae/ch) = TVS V> ~ Numeric Standards Temporary Basin: los Pinos River Inorganic Metals Modifications Stream Se ment Descri tion Desio Classifications Phvsical and Bioloaical man ua/l Qualifiers 1- All tributaries to the Los Pinos Aq life Cold 1 D.O. = 6.0 mgll Nth (ac) = TVS S = 0.002 As (ac) = 50 (Tree) Fe (ch) = 300 (dis) Ni (ae/chl = TVS River. including all lakes and Recreation 1 D.O. (sp) = 7.0 mg/I NH3 (ch) = 0.02 B = 0.75 Cd (ac) = TVS ltr) Fe (ch) = 1000 (Trec) Se (ac) = 10 (Trec) reservoirs, which are within the Water Supply pH = 6.5-9.0 Cb lac) = 0.019 N02 = 0.05 Cd (chI = lV5 Pb (ac/ch) = TVS Ag (ac) = TVS Weminuche Wilderness Area. Agriculture F. Coli = 200/1 00 ml CI2 (ch) = 0.011 N03 = 10 Crill (ac) == 50 (Trec) Mn (ch) = 50 (dis) Ag Ich) = lVS Ctr) CN = 0.005 CI = 250 CrVI (ac/ch. = TVS Mn (chI = 1000 (Tree) Zn (ac/eh) = TVS S04 = 250 Cu (ae/eh) = TVS Hg (ch) = 0.01 (Tree) 2.. Mainstem of the los Pinos River Aq life Cold 1 D.O. = 6.0 mg/l NH3 (act = TVS S = 0.002 As (ac) = 50 (Treel Fe (ch) = 300 (dis) Ni (ac/ch) = lVS from-the- boundary 'of 'the 'Weminuche Recreation 1 -0:0:-ls-p)-:--7:0-mgll ' NH3' lchl' =- 0:02-'-B--,;' -0.75 C(f (acT == IVS-Ctrr .-- 'Fe- (chI' =- 1000--CTi'ecr -S'inac) -:;: 10'(Trec) -" Wilderness Area to the U.S. Hwy 160 Water Supply pH = 6.5.9.0 Cl2 (ac) = 0.019 NO, = 0.05 Cd (ch) = TVS Pb (ac/ch) = TVS Ag lac) = lVS except for the specific listing in Agriculture F. Coli = 2001100 ml C12 Icht = 0.011 NOa = 10 Crill (ae) = 50 (Treet Mn (chi = 50 (dis) Ag (chi = TVS (tr) Segment 3. CN = 0.005 CI = 250 CrVI (ae/chl = TVS Mn (ch) == 1000 (Tree) Zn lac/ch) = TVS 504 = 250 Cu (ac/chl == lVS Hg (ch) = 0.01 (Trec) 20. Mainstem of the los Pinos River Aq Life Cold 1 D.O. = 6.0 mgll NH3 (ac) = TVS S = 0.002 As (ac) == 50 (Tree) Fe (chi = 300 (disl Ni (ac/eh) = TVS from U.S. Hwy 160 to the Coloradol Recreation 1 0.0. (sp) = 7.0 moll NH3 (ch) = 0.02 B = 0.75 Cd (ac) = TV5 (tr) Fe (ch) = 1000 (Tree) Se lac) = 10 (Trec) New Mexico border. Water Supply pH = 6.5.9.0 CI2 (ac) = 0.019 N02 = 0.05 Cd (ch) = TVS Pb (ac/ch) = TVS Ag lacl = TVS Agriculture F. Coli = 2001100 ml CI2 (chi = 0.011 N03 = 10 Crill (ae) = 50 (Trecl Mn (ch) = 50 (dis) Ag (ch) = TV5 Itr) eN = 0.005 CI = 250 CrVI (ae/chl = TVS Mn (ch) = 1000 (Trec) Zn (ae/ehl = TVS 504 == 250 .Cu (ac/ch) = TVS Hg (chi = 0.01 (Tree) 3. Vallecito Reservoir Aq life Cold 1 D.O. = 6.0 mgn NH3 (ac) = lVS S = 0.002 As (ae) = 50 (Trec) Fe (ch) = 300 (dis) Ni (ae/ch) = TVS Recreation 1 D.O. (sp) = 7.0 mg/l NH3 (cb) = -0;02 B ~ 0.75 Cd (ac) = TVS (tr) Fe (ch) = 1000 (Tree) Se tac) = 10 (Tree) Water Supply pH = 6.5-9.0 CI2 (ac) = 0.019 N02 = 0.05 Cd (chi = TVS Ph (ac/ch) = lVS Ag lacl == TV5 Agriculture F. Coli = 200/100 ml CI2 (ch) = 0.011 N03 == 10 Crill (ac) = 50 (Trec) Mn tch) = 50 (dis) Ag Ich) = TVS (trl CN = 0.005 CI = 250 CrVI (ac/chl = TVS Mn (ch) == 1000 (Tree) Zn (ae/ch) = TVS S04 = 250 Cu (ac/ch) = lVS Hg (ch) = 0.01 (Tree)