350 MW Pragati-II Combined Cycle Power Project of PPCL

Rapid Environmental ImpactAssessment Study of the Proposed350 MW Pragati-II Combined CyclePower Project of PPCLDoc. No.: CW-EN-9384-C-379-E-R-002Rev. No.: R0Issue Date: 21-02-2006Page No: 8 of 16Table –2Physico Chemical Characteristics of Ground Water QualitySl. Parameter Prescribed Protocol Mayur Vihar Delhi Jal Board OkhlaNo.LimitSep-05 Oct-05 Nov-05 Sep-05 Oct-05 Nov-051 pH 6.5-8.5 IS: 10500 7.2 7.3 7.5 7.38 7.4 7.412 Dissolved 4 IS: 10500 7.8 7.7 7.8 4.9 3.5 3.8Oxygen, mg/l3 Conductivity, - IS: 10500 616 612 615 1409 1171 1180mho/cm4 TSS, mg/l - IS: 10500 BDL BDL BDL 3 2 25 TDS, mg/l 500 IS: 10500 370 368 372 835 702 7286 Alkalinity as - IS: 10500 104 114 115 129 135 131CaCO 3 , mg/l7 Hardness as 300 IS: 10500 76 78 79 159 150 147CaCO 3 , mg/l8 BOD, mg/l - IS: 10500 Nil Nil Nil Nil Nil Nil9 COD, mg/l - IS: 10500 Nil Nil Nil Nil Nil Nil10 NO 3 , mg/l 45-100 IS: 10500 6 5 5 14 12 1311 PO 4 , mg/l - IS: 10500 0.58 0.8 0.9 0.15 0.52 0.4912 Cl, mg/l 250-1000 IS: 10500 50 55 56 290 270 27513 SO 4 , mg/l 200-420 IS: 10500 70 78 79 85 92 9514 Na, mg/l - APHA 54 48 42 61 56 5515 K, mg/l - APHA 6 5 4 6 8 916 Ca as CaCo3, 75-200 IS: 10500 64 45 47 85 82 88mg/l17 Mg as CaCO3, - IS: 10500 12 15 14 74 68 65mg/l18 Silica, mg/l - IS: 10500 BDL BDL BDL BDL BDL BDL19 O & G, mg/l - IS: 10500 BDL BDL BDL BDL BDL BDL20 Phenolic 0.001- IS: 10500 BDL BDL BDL ND ND BDLCompound,mg/l.00221 As, mg/l 0.02 APHA Nil Nil Nil ND ND BDL22 Hg, mg/l 0.001 APHA Nil Nil Nil ND ND BDL23 Pb, mg/l 0.1 APHA Nil Nil Nil ND ND BDL24 Cd, mg/l 0.01 APHA Nil Nil Nil ND ND BDL25 Cr +6 , mg/l