Upon learning of damage to fish and other aquatic life or wildlife and/or their habitat occasioned by contamination, the executive director of the department of fish and game or his designated agent shall investigate and determine the party responsible. He shall compute the damages based on tables for each species of fish as promulgated by the department and by such other means as he deems reasonable and accurate. He shall calculate the value of fish and other aquatic life or wildlife or their habitat destroyed by using standard procedures and such other means as he deems reasonable and accurate for estimating the value of fish populations and other aquatic life or wildlife or their habitat.