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Early Tuesday morning work crews began the removal of the tanks and contaminated material from the construction site. Water was pumped from the 30â€"food wooden tank, which was then removed and hauled to a governmentâ€"licensed hazardous waste disposal site near Sarnia. The second and larger tank, made of brick, will be removed later this week. ‘"‘The wells won‘t be turned on until the region can assure the public that the water is safe...we don‘t want to have any doubts in anyone‘s mind that we‘re providing safe drinking water,"‘ Bob Richardson, chief administraâ€" tive officer for the region, told the approximately 20 residents at the meeting. Tests at the reservoir revealed benzo(a)pyrene, a polynuciear aromatic hydrocarbon chemical produced by burning any organic material, at a level of nine parts per trillion in the resrvoir; the World Health Organizaâ€" tion recommends a limit of 10 parts per trillion as safe for drinking water. Two independent consulting firms, Canviro Consulâ€" tants and Conestoga Rovers and Associates, have been hired by CN and the region to undertake further testing at the construction site and in the reservoir. Canviro engineer Rick Rush estimated cost to remove only the wooden tank could reach as high as $20,000. Canviro began testing at the site July 19. A total of 10 wells will be drilled in order to gauge contamination levels. Tests have also been done on water from Laurel Creek. According to Rush, preliminary findings indicate the contamination is "fairly‘‘ concentrated in the area of the two tanks. ‘‘We know there are old pipes around the site; we‘ll find those and deal with them,"" he added. Although further testing is underway to determine the extent of the contamination, John Pawley, the region‘s director of engineering operations, expressed confidence that the water will be found to be safe. Melodee Martinuk Chronicle Staff Waterloo‘s Doug Mohr is set to embark on the second leg of his crossâ€"Canada Ride for Peace. The 27â€"yearâ€"old University of Waterloo graduate student will leave Ottawa August 6 for a monthâ€"long bicyle trek which will take him to 19 communities in Quebec, New Brunswick, Prince Edward Island and Newfoundâ€" land. Mohr completed the Vanâ€" 131st Year No. 30 Speaking at a public information meeting Monday at city hall, region and city officials stressed that Waterloo residents are in no danger from the water they are now drinking. Since the William Street pumping station provides 25 per cent of the water used in the city, the region is diverting water from other sources. The four wells were closed July 19, after workers excavating the foundation for C.N. Real Estate‘s City Centre development discovered two underground tanks and ruptured buried pipes containing coal tar. Subâ€" sequent testing revealed traces of the cancerâ€"causing agent benzo(a)pyrene, a chemical found in coal tar, in the adjacent Uptown Waterloo reservoir. Melodee Martinuk Chronicle Staff Wells at the William Street pumping station will remain closed until the province, the region and the city are convinced water from the reservoir does not pose a health risk to Waterloo residents. Drinking water poses no danger Cost of the cleanup will be shared by CN Real Estate New direction to Ride for Peace Wednesday, July 30, 1986 couverâ€"toâ€"Ottawa trip last sumâ€" mer. Building on his experiences of last year, Mohr has decided to give this leg of his ride a new direction, children, and a new theme, ‘Presenting Children with a Vision of Hope in a Nuclear Age.‘ As was the case last year, Mohr‘s ride is an attempt to focus attention on Canadian parâ€" ticipation in the arms race,; and to promote disarmament. Proper procedures undertaken Mohr set to cycle again and the City of Waterloo. Althouih officials of both are reluctant to discuss how much the work will cost, the final price tag could top the $100,000 mark depending on the number of tests to be done and the extent of the conâ€" tamination. CN Real Estate vice president Bob Pearson said construction of the $10â€"million city centre has already been pushed back weeks, and further delays may be necessary. The development was expected to be completed next June. Work began Tuesday morning on the removal of toxic wastes from the Regina Street site of the city centre complex. Chronicle photo As a doctoral student in psyâ€" chology Mohr has long studied the impace on the threat of nuclear war on Canadian chilâ€" drenâ€"in interviews he speaks of studies done in Ontario of 2,000 children between Grades 7â€"13 which showed that for more than 50 per cent the outbreak of nuclear war was their number one concern. But, Mohr told a media gatherâ€" ing last week, it wasn‘t until his ride last year that he gained a Waterioo, Ontario full understanding of what those statistics meant. In Napanee, Ont., he recalled, 150 students filled the town‘s main street in a spontaneous peace march from their school to city hall after hearing him speak. ‘"After the reception at city hall (given in Mohr‘s honor) a number came up to me; a number were crying...the threat of nuclear war has left many children with a sense of heipiessâ€" ness and no hope. As I left 25 cents For residents concerned about the risk because of the contamination, Dr. Paul Nees, a toxicologist with Conestoga Rovers, offers the following words of comfortâ€"â€"*"PNAs are ubiquitous. These materials are common in our everyday life. They‘re common in the exhaust from automobiles and smokestacks; they‘re also present in charcoalâ€"broiled steak and hamburger. ‘‘There are considerably more PNAs in the air you breathe then you would be exposed to in your water." Through his ride this year Mohr is attempting to give Canaâ€" dian children a vehicle by which they can express their fears to Canadian political leadersâ€"ride organizers have asked children to fold paper cranes, in Japan a symbol of peace and hope for the future, and present them to Mohr as he passes through their area. Napanee I began to realize the necessity of giving a children a vision of hope," Mohr said. (Continued on page 8)