CPCB Scientist B case studies
CPCB Scientist B · Put your knowledge to work in context.
Scientist 'B' is a scientific post at the Central Pollution Control Board, the statutory body under the Ministry of Environment, Forest and Climate Change, Government of India, headquartered at Parivesh Bhawan, East Arjun Nagar, Shahdara, Delhi. The role sits at the technical core of CPCB's work: designing and supervising ambient air, water and noise monitoring networks, running national programmes such as NAMP and NWMP, evaluating effluent and emission data, appraising consent and authorization applications, drafting standards and technical guidelines, and supporting enforcement and environmental compensation decisions. The CPCB Scientist B case studies are 5 cases and about 4,967 words.
1Three-Station Manual Network, One Bad AQI Day: What Can the Board Validly Publish?
An industrial town of about 1.1 million people operates three manual NAAQS stations. On 12 January the 24-hour values were: Station A, 2 m from the kerb of a four-lane junction - PM2.5 118 µg/m³, PM10 265 µg/m³, NO2 92 µg/m³, SO2 18 µg/m³; Station B, a residential colony 400 m from any road - PM2.5 74, PM10 168, NO2 44; Station C, an industrial estate - PM2.5 96, PM10 310, NO2 61.
1,030 words, about 5 min2Thirty MLD Plant Receiving Thirty-Eight: Dilution, Load and Compensation on a Class B River
A river classified for outdoor bathing (Class B) leaves a hill town and runs 22 km through a city before reaching a festival bathing ghat. A 30 MLD sewage treatment plant serves the city but receives about 38 MLD; the excess partly spills into a storm drain that joins the river 600 m below the plant outfall.
954 words, about 5 min3Industrial Pocket, Residential Flats and a Hospital 90 m Away: Which Noise Limit Applies at 1 a.m.?
A fabrication unit with a power press and a 250 kVA diesel generator stands in a pocket that the master plan shows as industrial, but residential flats are 15 m from its boundary and a 60-bed hospital is 90 m away. Acting on complaints, the Board's team uses a Class 1 sound level meter, calibrated before and after the run, 'slow' response, one-minute Leq.
967 words, about 5 min4A 450-Bed Hospital, a CBWTF and a Bypassed Incinerator Temperature Log
A 450-bed private hospital generates about 520 kg of bio-medical waste a day and hands it to a common bio-medical waste treatment facility (CBWTF) 25 km away. A joint inspection finds used gloves, IV tubing and a bag of expired amoxicillin vials in yellow bags; uncapped needles and broken glass ampoules together in a red bag; discarded X-ray films and a leaking formaldehyde bottle in the general municipal bin; and a sharps container with a 3 mm crack.
963 words, about 5 min5Bypass Open, Load Calculated: A Pulp Mill in a Critically Polluted Cluster
An agro-residue pulp and paper mill rated 150 TPD holds a consent to operate valid to March 2027. Its effluent treatment plant is designed for 8,000 m³/day; the mill discharges through a 1.5 km pipeline into a seasonal stream that joins a river 9 km upstream of a water-supply intake.
1,053 words, about 5 min