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<br />Appendix 43-A <br /> <br />MAXIMUM VALUES FOR GROUNDiTATER PROTECTION • <br />Constituent Maximum Concentration <br />or Property (mg/1) (pCi/1) <br />Arsenic 0.05 <br />Barium 1.0 <br />Cadmium 0,01 <br />Chromium 0.05 <br />Lead 0,05 <br />Mercury 0.002 <br />Selenium 0.01 <br />Silver 0.05 <br />Endrin 1,2,3,4,10,10-hexachloro-6,7- <br />expoxy-1,4,4a,5,6, 7, 8,8 a-octahydro-endo, <br />endo-1,4:5,8-dimethanonaphthalene 0.0002 <br />Lindane 1 ,2 ,3 ,4 ,5 , <br />6 -hexachlorocyclohexane 0.004 <br />Methoxychlor 1, 1,1-trichloro-2,2-bis- <br />Cp-methoxyphenyl) ethane 0.1 <br />Toxaphene Chlorinated camphene 0.005 <br />2,4-D (2,4-Dichlorophenoxy)acetic acid 0.1 <br />Silvex 2-(2,4,5-Trichlorophenoxy) <br />propionic acid 0.01 <br />Combined radium-226 and radium-228 5 <br />Gross alpha-particle activity (excluding <br />radon and uranium when producing uraniina <br />byproduct material or radon and thorium <br />when producing thorium byproduct material) 15 <br />• <br />43 - 28 (April 1990) <br />