Environmental remediation (i.e., Phase III, Work Plan, Remedial Action Plan [RAP]) are completed when site cleanup is necessary. A formal report outlining the in-situ and offsite plan of remediation mostly consisting groundwater and or soil vapor extraction well design/ installation, post monitoring report, etc., which needs to have the approval of local, state, and federal environmental agencies. Additional testing to define the extent of contaminant plume may be required; common testing includes groundwater & soil vapor testing, and  soil assessment.