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<br />lEE ~ Envirorunental Info. <br /> <br />1tJ3 <br /> <br />, <br /> <br />http://www.ieeco.comJenviron2.htm <br /> <br />Levels of gases such as carbon monoxide, carbon dioxide and oxygen are <br />also veTifted through stack testing. These gases are generally subjected to <br />special chemicals that measure their quantities in the overall gas stream of <br />the cremator. Under certain conditions, highly accurate measurement of the <br />gases is required. and samples are actually taken in plastic bags to <br />laboratories, where they can be ana1yzedWith more complex equipment. <br />Visible emissiDmf1esting is often associated with laboratory stack testing. <br /> <br />- VISible Emissions Testing <br /> <br />VISible emissions testing is sometimes necessary to show compliance with <br />visible emlssiol1&'imits. VISible emissions testing requires a certified smoke <br />~10 make a visual assessment of the opacity of the smoke coming <br />out of the stack (on a scale of 0% to 100%) every 15 seconds for an hour. <br />The smoke watcher must regularly be re-certifred by an approved authority, <br />usually every six months. <br /> <br />- Daily Logbook <br /> <br />In order show compliance with usage limitation, such as limit on the number <br />, of cremations or operating hours, a daily logbook may be required. In <br />instances where there is a limit on the total weight of remains per year it <br />may be necessary to estimate the weight or to weigh the body. <br /> <br />Equipment Upgrading <br /> <br />Existing crematory installations have usually been exempt from regulations <br />adopted after they began operation. However, some states have required <br />existing crematory installations to obtain new permits and upgrade their <br />machinery and operating conditions to new standards, including: <br /> <br />- Increasing the operating temperature of the cremation equipment <br />-Increasing retention time (time the exhaust gases spend in the pollution <br />control portion of the equipment) <br />- Lowering the levels of particulate matter and carbon monoxide output <br />from the crematory exhaust. <br /> <br />These upgrades can be troublesome for older cremation equipment. <br />Increasing the operating temperature causes the equipment to use more <br />fuel to accomplish the same cremation, raising the equipmenrs exterior <br />temperature and signifICantly increasing maintenance. Increasing the <br />retention time often requires the addition of more refractory brick chamber <br />to the existing cremation equipment. Space limitations within the cremator <br />or the building can make this diffICult Generally, however, lower levels of <br />particulate and carbon monoxide are not a problem for cremation <br />equipment as it typically operates below the set levels for these two <br />pollutants. <br /> <br />Emissions <br /> <br />Extensive emissions' testing was conducted on a crematory to determine <br />emission levels for all the regulated pollutants. CANA funded a large <br />portion of testing costs so the EPA would have accurate information to set <br />the new emissions standards for crematories. The only alternative to testing <br />would have been to estimate the emissions based on those of other types of <br />incinerators. <br /> <br />The tested crematory was' equipped with a wet scrutmer to give additional <br />oontrol of emissions. However, it was determined from the testing that the <br /> <br />70f9 <br /> <br />8/1/018:04 AM <br />