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What harmful substance must not be drained into s storm sewer?

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asked Jan 6 in Science by WaldoBeak339 (2.2k points)

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answered Jan 6 by OnaSchnell25 (1.8k points)

motor oil

People may dispose of harmful substances incorrectly. For example, motor oil must not be drained into a storm sewer.

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What harmful substance must not be drained into s storm sewer?

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