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Groundwater Protection Program General Requirements

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1.0 Report Submittal Schedule To implement United States Environmental Protection Agency (USEPA) directives and streamline the regulatory review (oversight) process, the following report submittal schedule is adopted by GPP: 1.1 Once an unauthorized release has been confirmed, a Preliminary Site Assessment Workplan must be submitted according to a pre-approved schedule arranged with GPP staff. The scope of this workplan is to collect detailed background information and determine whether groundwater beneath the site has been impacted. 1.2 Within sixty (60) calendar days after completion of the preliminary site assessment, a Preliminary Site Assessment Report must be submitted. If nature and extent of contamination cannot be defined during the preliminary site assessment phase, a Remedial Investigation Workplan must be submitted to completely define the extent of contamination and obtain a thorough understanding of site characteristics. 1.3 Within sixty (60) calendar days after receipt of written request from GPP, a Remedial Investigation Workplan must be submitted. 1.4 Within sixty (60) calendar days after completion of the remedial investigation, a Remedial Investigation Report must be submitted. 1.5 If additional remedial investigation is necessary, additional workplans must be submitted to GPP for review and approval prior to implementation. 1.6 Within ninety (90) calendar days after GPP approval of the final Preliminary Site Assessment Report or Remedial Investigation Report (whichever is applicable), a Feasibility Study Workplan must be submitted. 1.7 Within sixty (60) calendar days after completion of the feasibility study, a Feasibility Study Report must be submitted. 1.8 After completion of site characterization and feasibility study, a Remedial Action Plan must be submitted within a site-specific time frame as determined by GPP. 1.9 Within sixty (60) calendar days following completion of remedial action, a Remedial Action Report must be submitted. 1.10 When it is necessary to conduct immediate source removal or groundwater migration control to protect groundwater resources, human health or environmental health, GPP staff may, at any time, request that interim remedial measures be conducted. Prior to implementing any interim remedial measures, a detailed Interim Remedial Measure Workplan must be submitted to GPP for approval. 1.11 An Interim Remedial Measure Report must be submitted within sixty (60) days of completion of any interim remedial measures. 1.12 When corrective actions extend longer than three months, progress summary and monitoring well sampling reports must be submitted on a quarterly basis, unless a variance has been granted by GPP staff. Quarterly reports must be submitted within forty-five (45) days after the monitoring wells sampling event. Reports must also document the total quantity (in gallons) of product (free, dissolved and vapor phases) recovered for the quarter and the total quantity (in gallons) of product collected to date. 1.13 All technical workplans and reports must be signed by a California-Certified Engineering Geologist, California-Registered Professional Engineer, California-Registered Geologist, or California-Registered Hydrogeologist. Reports will not be accepted without such a signature and registration number (see Section II for further clarification). 2.0 Transmittal Letter All proposals and reports submitted must be accompanied by a cover letter signed by the RP or a legally authorized representative of the RP. The cover letter, at a minimum, must state the following. "I declare, under penalty of perjury, that the information and recommendations contained in the attached proposal/report are true and correct." 3.0 Containment Zone Policy (Applicable to Non-LUFT Sites Only) The RWQCB Basin Plan has been amended to include a Containment Zone policy (Appendix D). This policy does not automatically equate to case closure nor does it apply to leaking UST sites. Prior to requesting containment zone eligibility, the RP must complete the following pre-requisites: 3.1 The Preliminary Site Assessment, Remedial Investigation and Interim Remedial Measures (if applicable) have been completed. 3.2 A fate and transport model has been presented and validated by GPP staff. 3.3 A monitoring and sampling program has been established and is being maintained. San Mateo County will establish geographical areas, in which no known beneficial uses of groundwater exist, where a containment zone can be implemented. Future developments with regard to implementation of this policy, adopted by the RWQCB and the SWRCB, will be updated as amendments to this guidance document. Standard procedures for investigation and remediation of non-LUFT sites are otherwise expected to follow general GPP guidelines. 4.0 Notification Requirements Prior to initiation of any fieldwork, the following conditions must be satisfied. 4.1 A workplan must be approved by GPP staff. 4.2 GPP must be notified at least seventy-two (72) hours prior to initiation of any fieldwork (see Section II for further clarification). Failure to notify may result in rejection of all or portions of the data collected. 4.3 A completed subsurface drilling application must be submitted at least five (5) working days prior to the scheduled drilling date and approved by GPP. Within forty-eight (48) hours after discovery of an unauthorized release (e.g. during site investigation or upon tank removal), the RP must provide verbal notification to SMCo. Written notification and an Unauthorized Release Form must be submitted within five (5) days after initial discovery. 5.0. Administrative Requirements 5.1 Submit all workplans and reports unbound and double-sided. 5.2 Data received via facsimile are considered preliminary and are not acceptable as an official report. Only original signed and stamped final workplans and reports are accepted as the official document. Use of recycled paper is encouraged. 5.3 All reports must be prepared as described in the following sections.