Mr. Arth has successfully managed a variety of laboratory-based toxicological programs for commercial, industrial, and academic clients. In all programs, Peter places a strong emphasis on effective collaboration, developing clear goals and objectives and attaining them cost effectively, using sound experimental design, achieving exceptional data quality, and gaining client and regulatory approval. Peter is also versed in all aspects of performing and interpreting toxicity tests under guidelines published by a variety of regulatory agencies. In addition to his managerial responsibilities, Peter also acts a Project Manager for special studies and TIEs. His current role has technical, administrative, and financial components. Responsibilities include:o Assignment of Client/Project Management to technical staff o Qualification of Team Leaders and staff who have participated in training for conducting TIEs o Working closely with QA & Compliance Manager to ensure all work conducted adheres to established procedures and guidelineso Final approval of staff and test scheduleso Supervising senior staff and adjusting staffing levelso Monitoring efficiency of lab operationso Managing final review of data and reportso Monitoring overall financial performance of the laboratorySpecial interests and capabilities include:o Toxicity Reduction/ Toxicity Identification Evaluations (TRE/TIEs)o NPDES and stormwater monitoring programs o Sediment assessments in support of risk assessment, remediation, and TMDLs o Dredged material evaluationso Statistical and graphical evaluations of datao Method development/ R&D

Mr. Arth was promoted to Laboratory Supervisor in January of 2011. His responsibilities and core skills include conducting/supervising technical staff training, overseeing technical operation of the laboratory, managing all laboratory technicians, and monitoring staffing levels in the laboratory. Peter is also the team leader for the daphnid and embryo development testing categories. Responsibilities as a team leader include monitoring organism health, initial quality control review and data analysis, and method development for all testing suites in these categories.In addition to being the laboratory supervisor, Mr. Arth managed multiple special studies, NDPES, storm water, and sediment projects. Core responsibilities for project management included:o Preparing proposals in collaboration with Risk Manager and other members of the staff as necessary; o Coordinating the contracting process with clients; o Corresponding with clients regarding technical or managerial aspects of projects; o Ensuring projects meet scope requirements, stay on schedule, on task, and on budget; o Analyzing data to identify key patterns or trends; o Ensuring data collected are high quality (conducting QA/QC evaluation as needed); o Writing scientific letters, reports, articles, or technical correspondence; o Ensuring any budgets, reports, correspondence, etc. are reviewed by a peer prior to submittal; o Communicating openly and clearly with other team members; o Keeping up-to-date on status of environmental regulations; o Attending scientific meetings or conferences or taking courses to further professional development.

Mr. Arth joined the Nautilus laboratory in June 2008 and has conducted freshwater, marine, and sediment toxicity testing utilizing a variety of aquatic organisms (fish, cladocerans, sea urchins, polychaete worms, molluscs, crustacea, freshwater algae, giant kelp, etc.). He is well-versed in all aspects of performing tests under United States Environmental Protection Agency (USEPA), Army Corps of Engineers, State of California Department of Health Services, State of Washington Department of Ecology, and American Society for Testing and Materials (ASTM) guidelines. As a Laboratory Technician at Nautilus, his daily responsibilities under this position include a wide variety of activities including:o Data management and statistical analysis, report writing, and research activitieso Conducting various chemical analyses on environmental sampleso Conducting routine and specialized toxicity tests including Toxicity Identification Evaluations (TIEs).o Culture, care, and maintenance of organisms and laboratory systems