Statutory consent filing, technical DPR preparation, and mandatory pollution control engineering (ETP, STP, OCEMS) for industrial, commercial, and infrastructure units. Direct liaison with State Pollution Control Boards (DPCC, HSPCB, UPPCB) and CPCB under the Water Act, 1974 & Air Act, 1981.
All industrial, commercial, and infrastructure projects having an environmental impact must obtain CTE and CTO approvals from state authorities such as Delhi Pollution Control Committee (DPCC), Haryana State Pollution Control Board (HSPCB), and Uttar Pradesh Pollution Control Board (UPPCB).
CTE and CTO represent two mandatory sequential milestones in any facility's compliance lifecycle.
Timing: Required before starting civil construction, installing plant machinery, expanding capacity, or altering processes.
Evaluation Basis: Theoretical project feasibility, Detailed Project Report (DPR), site layout plan, water balance, and proposed pollution control designs.
Key Risk: If technical design or pollution load is underestimated at CTE stage, Consent to Operate (CTO) will be rejected later.
Timing: Required after project installation is completed and before starting commercial production or opening to guests/public.
Evaluation Basis: Performance-based physical verification that installed systems match CTE conditions and meet actual stack and effluent discharge limits.
Validity: Granted for 1 to 10 years based on pollution category; periodic renewal is mandatory to prevent operational closure notices.
Lays down national environmental standards, emission limits, effluent parameters, and uniform categorizations across India.
Grants CTE/CTO consents, conducts physical site inspections, issues show-cause notices, and monitors local environmental compliance.
All consent applications are processed through regional SPCB portals (OCMMS) aligned with statutory CPCB environmental guidelines.
Starting construction of any new commercial or industrial facility
Installing production plant, boilers, DG sets, or industrial machinery
Expanding manufacturing capacity or building area of an existing unit
Modifying production processes, raw materials, or product outputs
CTE is not just a form; it is a thorough technical evaluation of environmental load and planned mitigation systems.
Most rejections stem from poor technical preparation rather than legal technicalities.
Applying under Orange or Green when project processes belong in Red category causes instant application return.
Missing manufacturing mass balances, chemical usage details, or vague raw material declarations.
Proposing undersized ETP/STP capacities that fail to address peak hydraulic and organic pollution loads.
Establishing polluting industrial activities in non-conforming agricultural or residential zones.
CTO validity is determined by industry category and state-specific board norms. Renewal must be filed 60–90 days before expiry to avoid operational closure.
Subject to stringent compliance reviews, frequent board sampling, and strict telemetry uptime monitoring.
Moderate monitoring frequency with scheduled renewal inspections and annual compliance reporting.
Extended validity with simplified desk review renewal, provided production capacity remains unchanged.
Examples: Chemical synthesis, electroplating, heavy fabrication, pharmaceuticals, thermal power, large dye houses.
Requirements: Intensive DPR, mandatory ETP + APCD, OCEMS online link, shorter CTO validity (1–5 yrs).
Examples: Food and fruit processing, hotels (>20 rooms), hospitals (with beds), restaurants with high seating, medium engineering.
Requirements: Category-specific ETP/STP, oil & grease traps, solid waste management, 5-year CTO validity.
Examples: Small assembly units, flour mills, dry packaging, small garment making, spice grinding without effluent generation.
Requirements: Simplified online consent, domestic sewage disposal, valid up to 10 years.
Examples: Solar power plants, wind energy, software and IT development units, bicycle assembly, dry cotton packaging.
Requirements: Exempt from CTE/CTO consent. Requires only a simple online self-declaration intimation.
Select your industry type to view your statutory CPCB category, required consents, and mandatory treatment infrastructure.
Mandatory CTE before plant setup + Mandatory CTO prior to commercial trial runs + Hazardous Waste Authorization (Rule 6).
Effluent Treatment Plant (ETP), Stack Air Scrubbers / Bag Filters, OCEMS Online Telemetry, DG Acoustic & Stack Height.
Joint inspection by SPCB Regional Officer & CPCB guidelines; laboratory testing of stack emissions and trade effluent samples.
Custom chemical, physical, and biological treatment systems designed to neutralize industrial trade effluent to meet SPCB discharge limits.
MBBR / MBR domestic wastewater treatment systems with tertiary filtration for reuse in flushing, HVAC cooling, and green belt irrigation.
Heavy-duty multi-chamber interceptors required in commercial kitchens, hotels, and washing bays to prevent grease clogging and drain contamination.
Wet scrubbers, cyclone separators, bag filters, and certified acoustic enclosures for DG sets and industrial boilers conforming to stack formulas.
Continuous emission and effluent monitoring systems connected in real-time to state and CPCB regulatory compliance surveillance servers.
On-site automatic organic waste converters (OWC) and decentralized composters fulfilling Solid Waste Management (SWM) Rules 2016.
Greenshield Enviro coordinates every step on the state OCMMS portals, bridging technical engineering with statutory board approval.
Determine exact CPCB category (Red/Orange/Green/White), site zoning, and required state board forms.
Prepare Comprehensive Project Reports, site layout schematics, water balance, and treatment engineering designs.
Submission of CTE application with all statutory fees and technical annexures on SPCB/DPCC portals.
Complete installation of ETP/STP/APCD systems, followed by official board physical site verification.
Issuance of statutory Consent to Operate with regular periodic compliance auditing and renewal filing.
We provide complete liaison and technical representation across Delhi NCR, Haryana, and Uttar Pradesh.
