Discharges to aquatic systems are regulated though the National Pollution Discharge Elimination System (NPDES) Program. Toxicity testing has become and integral component of most NPDES permit compliance requirements. Through the performance of the entire suite of U.S. EPA and ASTM standardized test guidelines, Pacific EcoRisk assists a wide variety of public and private sector clients meet these compliance requirements. Our NPDES services include:

	Performance of aquatic toxicity tests
	Acute and Chronic testing
	Freshwater estuarine, and marine testing
	Effluent variability studies
	Species screening studies
	TIE/TRE
	Bioassessment
	Site specific criteria/water-effect ratio (WER) studies
	Operation of clients’ on-site testing laboratories
	On-site “clean” technique sample collection
	Preparation of on-site facilities for laboratory certification
	Training of on-site technicians
	DMRQA Evaluations