A 74-year-old man is brought to the hospital because of urinary retention. His past medical history includes hypertension, and benign prostatic hypertrophy. A Foley catheter is inserted to relieve the obstruction, and 1500 cc of urine is emptied from his bladder. Over the next few hours, he has 200cc/h of urine output. Which of the following urine electrolyte values is most likely in keeping with his diagnosis of post obstructive diuresis?