Question
What is the primary purpose of sending samples collected
under Section 21 of Water Pollution Act to a laboratory?Solution
Section 21 – Power to take samples of effluents and procedure to be followed in connection therewith Authority to Take Samples • The State Pollution Control Board (SPCB) or any authorized officer has the power to collect samples of: o Water from any stream or well. o Sewage or trade effluents discharged from any plant, vessel, or establishment into a stream or well. Admissibility in Legal Proceedings • The analysis results of the samples cannot be used as legal evidence unless the procedure outlined in sub-sections (3), (4), and (5) is strictly followed. Step-by-Step Procedure for Sampling 1. Issuing a Notice o Before taking the sample, the officer must serve a notice (in a prescribed format) to the occupier (person in charge of the facility) or their agent. 2. Dividing the Sample o The collected sample must be divided into two parts in the presence of the occupier or agent. 3. Sealing and Signing the Sample o Each part of the sample must be placed in a container, which is then sealed and signed by both:  The officer collecting the sample.  The occupier or their agent. 4. Sending the Sample for Analysis o One part of the sample is sent immediately to a recognized laboratory for testing:  For Union Territories: The sample goes to a Central Board-recognized laboratory (Section 16).  For States: The sample is sent to a State Board-recognized laboratory (Section 17). o The second part is sent to a separate laboratory upon the occupier’s request:  For Union Territories: Laboratory specified under Section 51(1).  For States: Laboratory specified under Section 52(1). Provision for Absence of the Occupier or Agent • If the occupier or agent is absent despite being served a notice: o The officer collects, seals, and signs the sample alone. o The sample is sent to the designated laboratory for analysis.
The respective ratio of monthly income of A to monthly income of B is 9:10, and A’s saving is (100/11)% more than B’s saving. Find the expenditure o...
Ratio of males to females in city A is 2:3 and ratio of males to females in city B is 14:25. Number of males in city B are (x+10)% more than number of m...
In a given years, A sold 1850 caps while B sold 20% more number of caps than A and C sold 5% less number of caps than B. Find the ratio between the numb...
Rajesh spent 46% of his monthly income on food and 54% of the remaining of study. If total monthly savings (after spending on food and study) of Rajesh ...
In an examination the percentage of students qualified with respect to the number of students appeared from school A is 75%. The number of students appe...
A and B together have total of Rs.5000 out of which they donated 10% to the orphanage school. The remaining amount is to be then redistributed between t...
- Rohit used to earn Rs. 42,000 per month. His spending to saving ratio was 5:9. After a salary increment, he reduced his expenses by 20% and his savings inc...
'M' allocates 20% of his income to food and 40% of the remaining amount to rent. The expenditure on education is three times higher than his savings, wh...
A bag contains 20 rupees note, 50 rupees note and 100 rupees note in the ratio 5:7:2. If the total amount in the bag is Rs 1,300, find the number of 50 ...
Out of the total population in a village 25% casted invalid votes and the winning candidate A received 14(2/7)% more votes than the losing candidate B....