Presolicitation notice from the Department of Defense, specifically the Department of the Navy, for natural resource services at various locations within Naval Facilities Engineering Command, Southwest's area of responsibility. The services include biomonitoring, inventorying, surveying, mapping, and related technical data and reports in compliance with applicable Department of Defense, Department of Navy, and federal, state, and local statutes and regulations. The procurement is a 100% Small Business set-aside with the intent to award no more than four Firm-Fixed Price, multiple award contracts. The contracts will be for a two-year base period and a three-year option period, with a minimum guarantee of $5,000. The aggregate value of task orders issued under the contracts will not exceed $30,000,000. The solicitation will be available electronically and the issue date is expected to be on or about March 19, 2019, with a closing date for receipt of proposals on April 18, 2019. The primary contact for this solicitation is Penny Brown, Contract Specialist.