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bear a reasonable relationship to the need for the seasonal and other temporal variations; and reports and the benefits to be obtained from the (3) adverse consequences of greater cost or reports; increased environmental damage can result from 10. WC Section 13300 states that the Regional Water improperly planned investigations and the lack of Board may require a discharger to submit a time consultation and coordination with the Regional schedule of specific actions the discharger shall Water Board. However, there are circumstances take in order to correct or prevent a violation of under which a phased, iterative approach may not requirements prescribed by the Regional Water be necessary to protect water quality, and there are Board or the State Water Board; other circumstances under which phases may need to be compressed or combined to expedite cleanup 11. California Health and Safety Code (HSC) Section and abatement; 25356.1 requires the Department of Toxic16. Preparation of written workplans prior to initiation Substances Control (DTSC) or, if appropriate, the of significant elements or phases of investigation Regional Board to prepare r approve and cleanup and abatement generally saves remedial acctiontion plans for sites wheere hazardous substances were released to the environment Regional Water Board and discharger resources. the Results are superior, and the overall sites have been listed pursuant priority to HSC Section cost-effectiveness is enhanced; 25356 (state "Superfimd priority list for cleanup of sites); 17. Discharger reliance on qualified professionals 12. Coordination with the U.S. Environmental promotes proper planning, implementation, and Protection Agency (USEPA), state agencies within long-term cost-effectiveness of investigation, and the California Environmental Protection Agency cleanup and abatement activities. Professionals (Cal/EPA) (e.g.. DTSC, Air Resources Control should be qualified, licensed where applicable, and Board), air pollution control districts, local competent and proficient in the fields pertinent to environmental health agencies, and other the required activities. California Business and responsible federal, state, and local agencies: Professions Code Sections 6735, 7835, and 7835.1 (1) promotes effective protection of water quality, require that engineering and geologic evaluations human health, and the environment and (2) is in and judgements be performed by or under the the best interest of the people of the state. The direction of registered professionals; principles of coordination are embodied in many 18. WC Section 13360 prohibits the Regional Water statutes, regulations, and interagency memoranda Boards from specifying, but not from suggesting, of understanding (MOU) or agreement which methods that a discharger may use to achieve affect the State and Regional Water Boards and compliance with requirements or orders. It is the these agencies; responsibility of the discharger to propose methods 13. In order to clean up and abate the effects of a for Regional Water Board review and concurrence discharge or threat of a discharge, a discharger to achieve compliance with requirements or orders; may be required to perform an investigation to 19. The USEPA, California state agencies, the define the nature and extent of the discharge or American Society for Testing and Materials, and threatened discharge and to develop appropriate similar organizations have developed or identified cleanup and abatement measures; methods successful in particular applications. 14. Investigations that were not properly planned have Reliance on established, appropriate methods can resulted in increases in overall costs and, in some reduce costs of investigation, and cleanup and cases, environmental damage. Overall costs have abatement; increased when original corrective actions were 20. The basis for Regional Water Board decisions later found to have had no positive effect or to regarding investigation, and cleanup and abatement have exacerbated the pollution. Environmental includes: (t) site-specific characteristics; (2) damage may increase when a poorly conceived applicable state and federal statutes and investigation or cleanup and abatement program regulations; (3) applicable water quality control allows pollutants to spread to previously unaffected plans adopted by the State Water Board and waters of the state; Regional Water Boards, including beneficial uses, 15. A phased approach to site investigation should water quality objectives, and implementation plans; facilitate adequate delineation of the nature and (4) State Water Board and Regional Water Board extent of the pollution, and may reduce overall policies, including State Water Board Resolutions costs and environmental damage, because: No. 68-16 (Statement of Policy with Respect to (1) investigations inherently build on information Maintaining High Quality of Waters in California) previously gained; (2) often data are dependent on and No. 88.63 (Sources of Drinking Water); and 2