RESOURCE EFFICIENCY
The project involves several pollution prevention and resource efficiency measures. These include: switch to elemental chlorine free (ECF) process; replacing existing conventional old digesters with state-of-the-art Rapid displacement heating (RDH) cooking; replacing old recovery boiler with new high pressure and efficient recovery boiler; installation of new bleached chemi-thermomechanical pulp (BCTMP) plant to substitute costly imported pulp; generating more bio-fuel (black liquor solids) based energy; state-of-the-art Multilayer Coated Board Machine with energy efficiency; high pressure, high efficiency Fluidized Bed Combustion (FBC) boiler for better power generation through co-generation; higher efficiency turbo generators with low specific steam/t kWh; high efficiency Electrostatic Precipitators (ESP) for coal fired boiler, Recovery boiler and Lime kiln; non-Condensable Gases (NCG) collection system to collect Non-Condensable Gases and incinerate them in Lime kiln; producer gas (PG) plant to fire gas in lime kiln to reduce consumption of furnace oil; water conservation, rain water harvesting and efficient water management measures; recycling and water conservation to reduce specific fresh water consumption; and upgradation of waste water treatment plant by segregating the colored and noncolored effluents with tertiary treatment.
Energy and Material Efficiency Projects
Post project, electrical power consumption is expected to increase from 958 kWh/t of product to 1111 kWh/t of product which is within the range considered as good international industry practice (GIIP). Process steam consumption will come down from 7.37 t/ton of paper to 7.22 t/ton of paper and utilization of energy from the recovery boiler as a percent of total energy consumed will increase from 22.5% to 35.7%. The total energy consumed will be 15.43 GJ/t of product.
Water
Specific water consumption at CPM will come down from 43m3/t of product to 38 m3/t of product which is within the range of GIIP. The water is sourced from Ukai dam at CPM.
Greenhouse Gases
As indicated at ESAP #6, CPM has commissioned a third-party to undertake post project GHG inventory. However, estimated GHG emissions post project is expected to be about 550,000 tCO2e per annum per annum calculated based upon scope 1 and scope 2 emissions. CPM will report its GHG emissions on an annual basis, as part of its AMR format.
POLLUTION PREVENTION
The environmental impacts from construction activities are those typical of most construction sites and include: dust generation; soil erosion and sediment loading increases; noise; waste management; potential spills of hazardous and other material; construction debris disposal; domestic solid waste and wastewater from construction camps; increased water usage; and construction vehicle traffic. As indicated under PS 1, CPM is implementing a construction stage ESMP, that includes specific mitigation measures that meets applicable aspects of IFC PSs and applicable and relevant aspects of WBG EHS Guidelines. Some of the specific mitigation measures to be applied include: installation of sediment traps to reduce sediment in runoff generated during land clearing/filling, collection, storage and disposal of liquid and solid wastes generated during dismantling and construction through authorized treatment and disposal facilities; implement measures to minimize risk of spill and overflow during transportation; constructing paved roads early where feasible and cleaning of paved roads; provision of water sprays to control dust on roads and stockpiles; wheel washing of transport vehicles; and covered transport of construction materials in trucks. To minimize silt runoff, the procedures will require provision of sediment traps at the project sites, and where required sand bag barriers to direct flow to sediment traps and use the trapped silt as filling material on site, if not contaminated.
Temporary impacts to air quality may occur during the construction phase. The main sources of air emissions at the project sites are: fugitive dust emissions; and particulate matter (PM), sulfur dioxide (SO2) and oxides of nitrogen (NOx) from construction equipment and vehicles, and from stationary sources like diesel generators (DG) at the project sites. The construction contractors will be required to undertake: water spraying in vehicle movement areas for dust suppression; covered transport of material; management of fill/excavated earth and construction material, wetting stockpiles; restricting excavations and construction material handling during high wind conditions; vehicular movement planning to minimize trips; wheel washing; minimizing drop heights for friable material; minimizing time for which excavated/fill earth is left loose at site; management of pollution from vehicular and equipment emissions including through regular maintenance of DG sets and transport vehicles to minimize PM, SO2 and NOx emissions; and other measures for minimization of fugitive dust emissions (e.g., covering stockpiles). An increase in ambient noise levels is expected during the construction period due to increased traffic, use of earthmoving and other construction equipment. CPM will require contractors to: limit use of heavy noise and vibration generating equipment to during day time to the extent possible; ensures mufflers are provided in noise generating equipment; implement equipment tuning program to minimize noise at source; not undertake high noise generation activity at night near residential areas; and undertake transportation planning to minimize traffic through communities at night in residential areas. CPM is implementing a monitoring program covering ambient air quality and ambient noise levels at sensitive receptors to demonstrate compliance with WBG EHS Guideline limits.
Groundwater will not be used for construction or domestic use. Generation of wastewater will mainly be limited to sanitary wastewater/sewage from labor accommodation and project office areas during construction. CPM will, as part of the ESMP implementation, ensure that construction wastewater (from equipment cleaning, transit mixer washing and other equipment washing/maintenance work) will be disposed through an oil water separator and settling tank. The treated wastewater will be used in dust suppression. The construction stage sewage will be treated through septic tank and soak pit. The company will require contractors to provide portable toilets with holding tank at locations where fixed toilets is not possible. CPM will ensure that non-hazardous construction waste will be used for site filling or disposed in authorized municipal locations. Other wastes (packing material, metal, debris, cement bags, drums/carbuoys etc.), garbage from worker accommodation are collected, segregated, stored and disposed of to re-users or in government authorized debris treatment and disposal facilities.
Hazardous materials that will be stored at site during construction include: gas cylinders, diesel, lubricating oils, transformer oil, paints, batteries and other chemicals, and hazardous wastes (used oils, waste/residual paint, oil/paint soaked rags/material, filters, empty oil/paint/chemical drum/barrels, spent batteries etc.) are expected to be generated during construction. These hazardous material and hazardous wastes handled/generated at site during construction will be: stored under segregation and containment; handled/used with appropriate care and personal protective equipment; and hazardous waste will be disposed through entities authorized to handle, recycle and dispose hazardous wastes.
Surplus excavated earth will be generated at the site and used for area leveling, back filling and for localized leveling work at site. CPM will require contractors to segregate and store construction solid waste in designated areas within the project site and dispose these through authorized agencies. CPM will identify wastes that can be recycled and will dispose these to re-users/recyclers. Waste that cannot be reused/re-cycled will be stored in bins and disposed of through licensed waste contractors. At the end of construction, a post-construction survey of the construction area will be conducted to confirm that all debris and wastes have been removed and appropriately disposed of.
Air Emissions and Ambient Air Quality
Measurements of baseline particulate Matter of 10 micrometers or less (PM10), PM2.5, Sulphur Dioxide (SO2) and Oxides of Nitrogen/Nitrogen Dioxide (NO2) indicates that are all within national ambient air quality standards.
Emissions to air from the project will be primarily from power boiler, recovery boiler and lime kiln, and fugitive emissions from coal handling. The design emissions rate from the power boiler of 30, 100 and 100 mg/NM3 for PM, SO2 and NOx are within GIIP limits. The design emission rate from recovery boiler of 30, 600 and 300 mg/NM3 for PM, SO2 and NOx will meet national regulatory limits. The emissions from lime kiln at 150, 400, and 500 mg/NM3 for PM, SO2 and NOx are as per national regulatory limits. The maximum incremental ground level concentration of PM, SO2 and NOx is predicted to be 1.59, 9.48 and 6.03 ug/m3 respectively, which is well under the 25% GIIP threshold and post project ambient air quality will meet national ambient air quality standards. Further, the total particulate load, SO2 as S load, and NOx as NO2 load emitted from recovery boiler will be 0.121,0.302 and 0.901 and lime kiln will be 0.09, 0.00 and 0.3 kg/t of air dry pulp respectively is within GIIP levels. The particulate load, SO2 as S load and NOx as NO2 load from the power boiler at 0.365, 1.217 and 1.217 kg/t of air dry pulp respectively is within the GIIP levels.
CPM will, as part of the ESMS upgrade, also commence monitoring emission of total reduced Sulphur (TRS) and hydrogen sulphide (H2S). Non-condensable gas (NCG) gases will be burnt in lime kiln.
Wastewater Treatment
With implementation of the project, CPM process will become elemental chlorine free (ECF). CPM has an effluent treatment plant with activated sludge process. A significant portion of the treated effluent is supplied to nearby villages for irrigation. Currently this program covers 223 farmers irrigating an area of 1050 acres. For the proposed project, additional 400 acres of land has been identified, and prior consent obtained from the farmers for irrigation of the additional wastewater generated in the operation phase post the proposed expansion. The remaining effluent is discharged in a natural drain (the Ghoda Nala) which discharges into Tapi river. The CPM effluent generation will reduce from 36 to 29m3/t of paper after the project. The effluent generation at about [42] m3/t of air dry pulp at CPM is within GIIP levels.
Post project, the total load of TSS, BOD, COD and AOX at 0.72, 0.48, 3.6 and 0.22 kg/t of air dry pulp is within GIIP levels. The concentration of TSS, BOD, COD and AOX that will be discharged from CPM will meet regulatory limits. CPM will, as part of the ESMS upgrade, also commence monitoring load of total nitrogen and total phosphorus discharged. Depending on the monitoring data, CPM may have to optimize N and P dosage. An on-site sewage treatment plant is being setup as part of the expansion project to treat all domestic sewage.
Solid Waste Management
CPM will dispose (a) 100% of the fly ash to fly ash brick and cement manufacturing units; (b) 100% of lime sludge by re-burning in the lime kiln for reuse in the process and about 40 tpd of lime grit will be disposed in an abandoned stone quarry; (c) 100% slaker grits by usage in road repair and road making ; and (d) 100% wood dust by using it as fuel in boilers.
Hazardous Materials
CPM will dispose hazardous waste to authorized entities. ETP sludge from CPM is disposed to fiberboard manufacturers. CPM has undertaken a full characterization and toxicity characteristic leaching procedure (TCLP) test of the ETP sludge and this will be repeated as part of the upgraded ESMS post the project. Used oil from CPM is disposed to authorized recyclers and will be continued after the project. As part of project, CPM is upgrading its procedures, facilities and practices relating to segregation, labeling, handling, storage, and disposal of solid and hazardous wastes in line with GIIP requirements.
Pesticide Use and Management
CPM, as part of its FSC Policy has committed to: identification and avoidance of highly hazardous pesticides; appropriate use of pesticides that are used; and promotion of nonchemical methods of pest management as part of integrated pest and vegetation management strategy. CPM does not use WHO Class 1a and 1b pesticides and ensures that if WHO class II pesticides have to be used, these are used by personnel with proper training and equipment, and there are appropriate facilities to handle, store, apply and dispose them off.
While CPM encourages farmers to not use chemical pesticides and weedicides, in instances of high termite infestation, farmers are advised to use Imidacloprid, a WHO Hazard Class II pesticide. CPM as per its SOP for pesticide use and management will: (a) when advising farmers to use Imidacloprid, also train them in its proper use, use of appropriate PPE, controlling access to it, and appropriate handling, storage and disposal mechanisms; and (b) implement a program to identify a less hazardous alternative to this pesticide. In the farm forestry operations, CPM will work with farmers, cooperatives and suppliers on an ongoing basis to: (a) assess if any WHO Hazard Class Ia, Ib and II pesticides are used and enable their replacement with less hazardous alternatives; and (b) enable appropriate disposal or reuse of containers associated with the pesticides use.