The government contractor who scorched the greens at Hains Point also destroyed the grass at Rock Creek golf course, and District duffers are teeing off on the National Park Service for its stewardship of D.C.’s public courses.

Michael Williams, spokesman for Golf Course Specialist Inc., said Thursday that the same employee who confused herbicide with fertilizer at Hains Point last month also sprayed the lethal compound on the greens at Rock Creek Park around the same time. Williams attributed the gaffe to “human error.”