NUASAHI CHROMITE MINES M/S INDIAN METALS ... - IMFA

Date of Sampling : 30.08.2012
Sampling Material : Surface Water
Sample Collected by : ERSI’s representative
Sample Collected in presence of : Client’s representative
Quantity of the sample : 5 litres of each sample (5 samples from 5 locations)
Sample Received on : 01 SEPT 2012
Test completed on : 22 SEPT 2012
Sampling Location Specification : S 1 . U/G mines discharge through Sump (before treatment)
S 2 . U/G mines discharge through Sump (after treatment)
S 3 . U/G mines discharge water inlet of Settling Tank ‐ 1
S 4 .U/G mines discharge water outlet of Settling Tank‐1
S 5 . U/G mines discharge water outlet of Settling Tank‐2 to paddy field
Sl.
01. Colour
02. Odour
Parameters
Analysed
03. Suspended Solids
04. pH value
05. Temperature
06. Oil & Grease
07.
08.
09.
10.
11.
12. COD
Total Residual
Chlorine
Ammonical
Nitrogen (as N)
Total Kjeldahl
Nitrogen (as NH 3 )
Free Ammonia
(as NH 3 )
BOD @ 27 0 C 3
Days
Test Method
APHA 22nd Edition, 2120 B
(Visual Comparison Method)
Unit
APHA 22nd Edition, 2150 B
(Threshold Odor Test)
‐‐
APHA 22nd Edition, 2540 D
(Total suspended solid dried at
103‐105 0 C)
APHA 22nd Edition, 4500‐H+B
(Electrometric Method)
APHA 22nd Edition, 2550 B
Lab & Field Method
APHA 22nd Edition, 5520 BD
(Partition Gravimetric / Soxlet
Method)
Permissibl
e Limit
Result
S 1 S 2 S 3 S 4 S 5
Hazen 5.0 1.0 1.0 1.0 1.0 1.0
Unobjecti
onable
(U)
U U U U U
mg/L 100.0