A publication of Work On Waste USA, Inc., 82 Judson, Canton, NY 13617 315-379-9200 APRL 5, 1990


DETROIT, MICHIGAN
3,000 TPD INCINERATOR

OWNER: GREATER DETROIT RESOURCE RECOVERY AUTHORITY
BUILDER & OPERATOR: COMBUSTION ENGINEERING
CONSULTANTS: ROY F. WESTON
THE GIANT FALLS

ON APRIL 17, 1990, THE MICHIGAN AIR POLLUTION CONTROL COMMISSION DENIED A PERMIT TO OPERATE THE DETROIT INCINERATOR BECAUSE OF THE VIOLATION OF THE MERCURY AIR PERMIT LIMITS. THE AIR POLLUTION CONTROL COMMISSION ORDERED THAT THE DETROIT INCINERATOR BE SHUT DOWN ON THE EVENING OF APRIL 17, 1990.

TESTS REVEAL OVER 13 POUNDS OF MERCURY A DAY WAS EMITTED FROM DETROIT INCINERATOR

. MERCURY PERMIT LIMITS "ALLOW" 3.36 LBS. PER DAY. "The results of stack tests conducted by Clean Air Engineering ("CAE") in June and July 1989...indicate that the emission of hydrogen chloride and mercury exceeded the limitations specified in Permit to Install No. 868-83. The hydrogen chloride and mercury emission levels reported are summarized in the following table.

Hydrogen Chloride Emissions (pound per hour)

Run l Run 2 Run 3 Average Limit

Boiler 11 389 386 394 390 294

Boiler 12 404 393 399 399 294

Boiler 13 356 381 362 366 294

Mercury Emissions (pounds per hour)

Run l Run 2 Run 3 Average Limit

Boiler 11 0.31 0.39 <0.22* 0.31 0.07 * None detected

Boiler 12 0.30 0.31 0.33 0.31 0.07 at stated levels.

Boiler 13 <0.22* 0.22 0.34 0.26 0.07

[ Ed. Note: The incinerator has three boilers at l.450 tpd each. "No more than two boilers shall be fired at any one time."

"The county has also cited the Authority for violation of Rule 901 with respect to odors, and for failure to utilize adequate fugitive emission control....the Authority submitted the results of stack tests conducted by CAE between October 20 and November 2, 1989 and November 27 and November 29, 1989. Of these tests, some were conducted with waste up to four inches in size that pass through the primary trommels being excluded [an effort to exclude mercury containing batteries.Ed.] from direct introduction into the boilers and with the manual addition of hydrated lime at a rate of l,200 pounds per hour directly to the waste before introduction into the boilers. The test results under these conditions appear to show emissions within the permit limitation for hydrogen chloride. Mercury emissions, however, again exceeded the permit limitations." 4-l7-90 Staff activity report of the MI Department of Natural Resources, Air Quality Division. As reports can be difficult to obtain, Waste Not will make available this 6-page report for $l.

THE CATCH-22: METHODS TO REMOVE MERCURY FROM INCINERATOR WASTE STREAM SHOW PROMISING RESULTS. METHODS ENTAIL 30% OF WASTE STREAM DIVERTED FROM INCINERATOR TO LANDFILL.

Methods were introduced to remove batteries by screening, with trommels, any material under 4 inches in diameter. Mercury emissions were dramatically reduced from 13.44 pounds a day without screening to 3.71 pounds of mercury emissions a day with a screening method, though still above the permitted mercury limit. The incinerator authority revealed that by trommeling out material under 4" in diameter the incinerator received only 64-65% of the wastes, leaving over 30% to be landfilled. As the Authority is obligated for ash/landfill disposal and its costs, plus paying for the tipping fee at the incinerator, the 30% reduction in wastes to the incinerator is a costly affair. Also what it reveals is that the 30% of wastes being landfilled contain a huge amount of potentially hazardous waste that is now being sent to Sumpter Township's landfill. The Detroit incinerator ash is being sent to the Sumpter Township landfill that has a monofill for ash with plastic and clay liners and a leachate collection system. Sumpter Township is approx. 30 miles from the Detroit incinerator. The hydrogen chloride emissions "appear" to be within the permit limits by the introduction of 2,400 pounds of hydrated lime an hour, or 57,600 pounds of hydrated lime a day to the wastestream before it is incinerated.

APRIL 17, 1990, HEARING ON MERCURY PERMIT VIOLATIONS:

Most observers had assumed that the MI Air Pollution Control Commission (MAPCC) were going to allow Combustion Engineering to operate, on the basis of a "consent decree" which had gone through six revisions by the time the hearings got under way on April 16. Even during the morning session, most of the time was spent changing the language of the sixth version, as officials from the MAPCC explained the difficulties being experienced with hydrochloric acid, dioxin and mercury emissions. Even though the hydrochloric acid emissions had finally been brought below the permit levels, it had taken the addition of l,200 lbs. of lime per hour to each of the two furnaces achieve. Even though they were meeting the permit levels for dioxins and furans, they issued warnings about how much higher these emissions were than from other modern plants and how, if foodchain exposure was taken into account, the computed incremental cancer risks would be higher than previously calculated. The literal showstopper, however, came in the form of the mercury emissions. Even with the lime additions, and the rejection of pieces of trash of less than 4 inches diameter (an effort to exclude mercury containing batteries), the mercury emissions were still higher than the permitted 0.07 lbs per hour from each furnace. In the afternoon session, the mood began to change when the Commissioners heard from local citizens, the experts brought in by the Evergreen Alliance (a local community coalition that had fought the incinerator for several years) and from Environment Canada (similar to our federal EPA). Citizens complained of odors, respiratory problems and other health effects, and expressed a desire not to be used as guinea pigs in any more experiments with this 'space age' technology. Experts for the Evergreen Alliance included: Craig Volland, an expert on air pollution equipment and the mercury problem; Dr. Richard Cook, a Ph.D. chemist from Kalamazoo College, MI, and former Vice-Chairman of the Michigan Toxic Waste Commission; and Dr. Paul Connett, a Ph.D. chemist from St. Lawrence University and co-editor of Waste Not.

Volland explained how poor electrostatic precipitators were at removing mercury, and how poor the science was that was going into the redesign of the plant to minimize mercury emissions. He suggested that mass-balance studies be performed to see where the mercury was coming from and where it was going, not just simply relying on air emissions testing. He further suggested that both wet scrubbers and activated charcoal filters were superior at removing mercury. Cook explained how much he regretted that when he first joined the Michigan Toxics Waste Commission, he did not prevail against those who told him not to bother to pursue the Detroit incinerator because it "was a sensitive moment politically and any public statements could interfere with obtaining bonds for the plant." He pointed out the dangers of the current emission levels of mercury and other pollutants. He also stressed the poor science involved in the mercury removal strategy. He urged the Commissioners to have the courage to shut the plant down now before it did any more damage to the environment or the people living in the area. Connett supported the points made by both Volland and Cook on the poor science involved in approaching the mercury problem. He explained how he, and others, had testified in Detroit on several occasions prior to the plant being built, on the inadequacy of the air pollution control equipment, on the gross underestimates in the health risk assessments performed by consultants (particularly Dr. Kay Jones of Roy F. Weston who had used his infamous comparison with peanut butter sandwiches to defend this project), and on the misuse of resources represented by the building of this half a billion dollar incinerator before even a rudimentary recycling program had been studied, let alone pursued. He further explained how each argument raised had always been counteracted with the refrain "the plant will meet all state and federal regulations." However, he noted that when the ash failed the "federally designed EP toxicity test," the Michigan authorities quickly changed the regulations. A case of heads the incinerator industry wins, and tails the citizens lose. He asked whether the commission would now oblige by changing the mercury standard. He emphasized that the difference between "consent decree to operate," and a "permit to operate," was academic, as far as the citizens, who suffer near the facility, were concerned. Currently, he estimated that each year over 5,000 pounds of mercury were coming out of the stack, and, based upon one test, as much as 26 lbs of dioxins and furans per year. Much of this he feared would end up in the Great Lakes or on farmland in Ontario. The "consent decree", if issued, would simply be a licence to continue to experiment with the people who live near the plant, the dairy farmers who graze their cattle downwind in Ontario and the people who eat fish from the Great Lakes. He concluded that Michigan shouldn't be permitting experiments with the world's largest trash incinerator. He asked the Commissioners to deny the permit to operate, and force the company to do their experiments in the lab. Meanwhile, he suggested, Detroit should pursue the solution of the trash crisis in the way they should have pursued it in the first place: source separation, recycling and composting. A strategy which allows toxics to be removed at the front end, and places a premium on educating the public on the larger battles we all have to face, reducing global warming and conserving our resources for future generations. Environment Canada, gave a clear and powerful presentation, showing that a facility it had been monitoring in Hartford, CT, fitted with different air pollution control equipment, was achieving dioxin and furan emissions a thousand times lower than the Detroit incinerator and mercury emissions which would meet the Detroit permit level. After many citizens testified, nearly all indicating that they had no desire to see the Detroit experiment continued at their expense, the Michigan Air Pollution Control Commissioners voted to deny the Detroit incinerator a permit to operate. The City of Detroit is expected to appeal, and that hearing date is scheduled for May 3, l990.

FOR MORE INFORMATION CONTACT RALPH FRANKLIN, EVERGREEN ALLIANCE, 313-833-4998.


WASTE NOT # 97. A publication of Work on Waste USA, published 48 times a year. Annual rates are: Groups & Non-Profits $50; Students & Seniors $35; Individual $40; Consultants & For-Profits $125; Canadian $US50; Overseas $65.

Editors: Ellen & Paul Connett, 82 Judson Street, Canton, New York 13617. Tel: 315-379-9200. Fax: 315-379-0448.