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SAN DIEGO — A spill of about 100 gallons of sewage prompted a pollution alert Tuesday for a stretch of shoreline along the northern reaches of San Diego Bay.

Sewage Spill SignA blocked sanitation line caused the wastewater to overflow at Spanish Landing Beach off the 4300 block of North Harbor Drive, near Lindbergh Field, according to the county Department of Environmental Health.

Some of the sewage drained into the ground, and crews were able to clean it up by removing the fouled sand.

Due to possible contamination of the bay waters in the area, signs warning of health hazards will stand along the beach until follow-up testing deems the site safe again for recreational uses.