These requirements are to be used for Hydrogeologic
Assessments and Groundwater Monitoring Programs, in
order to show that the groundwater investigation meets
Regional Water Quality Control Board's (Cal-RWQCB) requirements,
determined as follows:
- Impacts of discharges on groundwater quality
- Lateral and vertical extent of contaminants plume
- Groundwater gradient and direction of flow
- Specific aquifer properties as required.
a. Work Plan: A work plan should be submitted to meet
the general requirements for subsurface investigation.
b. Field Procedures: Furnish and install groundwater
well at the subject site.
c. Groundwater Sampling: Representative groundwater
sampling is required by the lead agency.
d. Groundwater Analysis: Comply with chain-of-custody
procedures. Samples must be handled and analyzed according
to the laboratory requirements for groundwater samples
analysis and QA/QC guidance document.
c. Reporting: Incorporate all boring logs, geophysical
logs, and sieve analysis results with interpretation
in final report. Illustrate the groundwater contaminant
plume by plan view and cross section, including direction
of section lines, scale, legend, constituent concentrations,
and lithology. Recommend additional assessment requirement
and plants for site remediation as needed.