Rare Technologies alleges that when taken to task, most sent a backdated letter to prove that it had already informed the testing agencies about provisional certification. Another letter from most , dated August 12, 1999, followed. This letter -- again suspected to be backdated -- gave provisional emission norms for certification. Key people in several government agencies confirmed to Down To Earth that these provisional norms were issued only in September. The ministry held a meeting with all stakeholders on September 2, 1999, as there were "certain points [in the iip emission test report] on which detailed clarifications are necessary both from the converting company [Rare Technologies] as also the test agency." K R Bhati, additional secretary to most , again opened the issue of provisional certification, already discussed with the epca in a meeting on August 24. Bhati is reported to have said in the meeting that there is no provision for a preliminary or provisional certification in the rules set by cmva and no such permission can be given. most had even advised the Delhi government to file an affidavit in sc for extension of the deadline.
iip had earlier agreed to conduct type approval tests on the converted buses. Now, it revealed that other tests, such as those for ensuring safety, had not been conducted and that the institute did not have the infrastructure to do so. It also pointed out some safety concerns. In a meeting held on September 8, 1999, epca gave most and the testing agencies one week to issue the regulations. The ministry refused to commit to any time limit. epca sensed a clear lack of commitment among the concerned agencies. most couldn't absolve itself of the responsibility of laying down rules for fitness certification, the authority's report stresses.
By September 1999 epca concluded that there were no procedures to give type approval to buses converted to cng . To speed up the process, epca proposed testing of only one model bus for certification of the conversion technology and kit. It suggested that testing agencies define a procedure by which dtc itself could test and certify the vehicles. The report asks most to define the procedure and work alongside the Delhi government to meet the deadline. All that Bhati of most has done is to argue consistently that cng is not viable.
The most committee that was drawing out rules and regulations for certifying cng buses held a meeting on September 22, 1999. The meeting was called by the Automotive Research Association of India (arai), a technical body responsible for testing vehicles according to rules issued by most . Balraj Bhanot, director of arai , had been chairing the most committee. The fact that it took five months for the committee to notify the norms says a lot about his willingness to implement the sc order (see chart: MOST: incompetence is the only norm).
Several delays and excuses later, most finally notified certification rules and regulations in February 2000. These merely specify that the bus should meet the emission norms of the year of its manufacture. In July 2000, most further elaborated on its February notification. It stated that agencies like the Indian Institute of Petroleum and arai could certify only 25 cng converted buses and that the companies involved in conversion of in-use vehicles to cng would have to bring back one vehicle after it has it has run 25,000 km for a type approval certificate. This would allow the companies to undertake unlimited cng conversions. The companies protested that this process would take more than eight months, meaning that there would be no way to meet the Supreme Court deadline. In December 2000, most agreed to do away with the condition for certification of converted vehicles only after completing 25,000 km. By this time, only three months remained to meet the deadline.
As if that wasn't enough, all the tests needed for certification are not available in any one laboratory. Companies like Rare Technologies find that tests for emissions and smoke are conducted at iip , Dehradun, while other tests like electro-magnetic interference and gradeability (testing the vehicle's ability to climb) can be conducted only at the Vehicle Research and Development Establishment (vrde), Ahmednagar or arai , Pune, both in Maharashtra.
teri has cited studies of dubious nature to claim that cng vehicles emit more ultrafine particles than diesel ones. But this could not stand to reason in a recent discussion forum on the television channel Star News. teri 's Ranjan K Bose was rendered speechless when Anil Agarwal, chairperson of the Centre for Science and Environment, exposed the true nature of the study from the Harvard Centre for Risk Assessment. Agarwal pointed out that the study was conducted for one of the leading bus and truck engine manufacturers in the us . The report is a literature survey that selectively quotes another study.
Baptised as a Harvard study, this report has found way to the table of every policymaker in Delhi. The study has no original findings of its own but is a highly biased literature survey that quotes only studies against cng . Michael Walsh, a highly respected air pollution expert and former official of the us Environment Protection Agency (epa), says, "What I find especially troubling and distasteful is the way the authors give the report the aura of impartiality and scholarship by associating it with the Harvard name. Any undergraduate who turned such a report in to his professor would surely get a very poor grade."
teri chooses to ignore the mounting evidence on the cancer causing potential of diesel emissions that is many times more potent than cng emissions. A study by the Swedish consultancy group Ecotraffic found that after taking into account all the toxic components in emissions, the cancer potency level of diesel cars is double that of petrol cars in India. Even more frightening is the fact that if only particulate emissions are compared from different car models then the cancerous effect of diesel particulate matter from the new diesel car is equal to that of 24 new petrol cars and 81 cng cars on the road. The Swedish experts have identified traces of over 40 substances in diesel exhaust that are listed by the epa as hazardous air pollutants and by the California Air Resources Board as toxic air contaminants. Unfortunately, the pro-diesel lobby glibly vouches for diesel without considering how even clean diesel is not good enough to reduce the risk of cancer.
When confronted by similar myths being propagated by diesel industry in the us , the us department of energy issued public notification to dispel these myths. It categorically dismissed the argument that cng buses emit more particulate matter or more ultrafine particles than diesel buses: " cng buses consistently emit dramatically less particulate matter than diesel buses. The trace amount of particulate matter associa ted with cng is attributed to crankcase lubri cating oil consumption (which also occurs in diesel engines)" (see graph: Particle toxicity ). As regards the number of ultrafine particles, it says, " cng actually produces much fewer ultrafine particles than diesel fuel." On the point that cng buses cause more global warming, it says, " cng buses have very similar greenhouse gas emissions as diesel buses despite higher methane emissions because natural gas has inherently lower carbon dioxide emissions compared to diesel." However, an issue paper by the European Natural Gas Association points out that "a majority of references conclude that natural gas is most preferable from a global warming point of view (see box: Misleading media and public opinion).
teri argues in favour of what it claims are the most cost-effective options for cutting emissions, referring to diesel technologies. In this the institute actually finds support from Ashoke Joshi, secretary to the Union ministry of surface transport, who expressed similar sentiments in a letter dated February 22, 2000, to the Environment Pollution (Prevention and Control) Authority. This was barely one month before the deadline to convert all eight-year-old buses to cng . The December 11, 2000 issue of Diesel Fuel News , a pro-diesel newsletter, quotes teri to say that cng technology is not viable for "a poor country like India." So, according to teri , while people are dying due to air pollution, they should wait for the dawn of a cheaper technology. teri not only ignores the health costs of diesel emissions, it also contradicts international experiences of the economic advantages of cng . In another paper dealing with vehicular pollution control strategies, teri champions the cause of promoting alternative fuels like cng . This confused approach shows through.
teri ignores a study by the National Institute of Public Finance and Policy that says cng is the most cost-effective option, better than using particulate traps in current diesel buses or bringing advanced diesel buses that would need far cleaner diesel than is available today. The study estimates that the cost (per weighted tonne) of emission reduction with particulate trap 60 times higher than the cost of cng retrofitment.