Tris DeRoma/Monitor
County Parks Construction employee Charlie Lopez skims the water Monday, looking for dead fish or other animals that may have been killed by the substance. Nothing has been found.
Green pond remains a mystery

Park officials suspect a bit ‘o Irish celebrations might have spilled over into Ashley Pond overnight and turned the water green in one section. 

The public was kept away from part of the pond Monday morning as Los Alamos police investigate what type of material was released into the water that resulted in the color change.

Police responded at 10 a.m. Monday to reports of a liquid hazardous materials call at Ashley Pond Park. 

Parks Superintendent Jeff Humpton and his crew were already on the scene, taking samples of a green substance that was concentrated in a particular section of the pond. 

Parks officials have blocked off the area and are asking residents to keep their pets away until it is determined what the substance is. Preliminary tests show that it is not antifreeze. 

“This is a first for me,” Humpton said. Some crews speculated that it might be non-toxic green dye, left over from a St. Patrick’s Day celebration.