  H10340/90-- OPR-D111-WH; OBSTRUCTION LOCATED BY SIDE SCAN SONAR IN APPROX. LAT. 36-52-45.80N, LONG. 75-53-16.81W. ESTIMATED DEPTH OF 14.6 METERS (48 FEET). EVALUATOR RECOMMENDS CHARTING AN OBSTR (A) COVERED 48 FEET AS SURVEYED. ADDITIONAL WORK RECOMMEN