Wesley Nicks, Director of Environmental Health Environmental Health - - PowerPoint PPT Presentation

Wesley Nicks, Director of Environmental Health

Environmental Health Divisions

Consumer Protection

• Retail Food
• Drinking Water
• Vector Control
• Recreational Health, Swimming Pools, Organized Camps

Hazardous Material

• Chemical Storage
• Hazardous Waste Management
• Underground and Aboveground Storage Tanks
• California Accidental Release Prevention Program
• Remediation and Emergency Response

Land Use

• Waste Water (On Site Septic Systems)
• Change in Use Environmental Review (AML Sites)

Land Use Change

• r Development Application to

Nevada County Planning Department

Application is Complete Appropriate Zoning CEQA Compliance Review Planning Ensures Distribution to Appropriate Agencies

Environmental Health Land Use Division Review

• Waste Water Disposal Resources
• Drinking Water Resources
• Past Land Use Impacts Including AML

• 1,281 mining features of some kind. Features may or may not

be significant

• Many of the historic mine records were never mapped
• A minimum of 366 potential mine sites in Nevada County
• 84% of 47,000 sites Statewide present physical safety

hazards, approximately 11% environmental hazards

• Approximately 31 percent are on private lands

ABANDO NDONE NED MI D MINE NE LA LAND ND PRELI LIMI MINA NARY A ASSESSME MENT NT (PA) P PROCESS DI DIAGRAM M °

INITIATE AML PA INVESTIGATION ° Determine Project Purpose ° Determine Project Objectives ° Request Phase I Assessment BACKGROUND RESEARCH PHASE I ° Records Review ° Site Inspection ° Interviews ° Update Conceptual Site Model With Results NO FURTHER ACTION ° No Physical Hazards ° Site Acceptable For Unrestricted Land Use ° Hazardous Waste Not Disposed at Site ° No Acid Mine Drainage ° No Potential Impacts to Water Quality (e.g., Turbidity) ° No Potential Impacts To The Environment From Past Uses FURTHER INVESTIGATION DECISION PHYSICAL HAZARDS ONLY ° Required Engineered Mitigation EXTENSIVE CONTAMINATION IDENTIFIED CAL EPA/DTSC ° Refer Case to Cal EPA ° DTSC ° PEA Process ° NFA Concurrence SAMPLING PHASE II ASSESSMENT ° Workplan Preparation ° Sample Collection ° Additional Sampling DATA EVALUATION ° Accept / Reject Data ° Identify Data Gaps ° Compare to Background ° Compare Contaminants to Regulatory Levels FURTHER ACTION REQUIRED ° Removal Action ° Characterization/Remediation ° Reconsider Land Use MINOR MITIGATION POSSIBLE ° Establish Pathways ° Comparison to Screening Data ° Background Comparison CORRECTIVE ACTION PLAN ° Define Problem ° Describe Mitigation ° Describe Verification of Results ° Conclusion and Recommendations FURTHER INVESTIGATION DECISION NFA FROM CAL EPA/DTSC ° To Planning Department