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Tri Regional Recommendation Page 10 of 24 Appendix A 3.3 Quarterly Status Report- §2652(d) #2, (below)unless otherwise directed by the lead regulatory agency. Dischargers,UST operators, or permittees are to report at least quarterly to the Regional Board 8. Status and timelines of investigation and and LIA until investigation and cleanup of the cleanup activities including the results of site is deemed adequate(more frequent reporting all investigations implemented or pro- may be required by the Lead Agency. These posed to date. reports are to include the following minimum information: 9. If applicable,the status of any ongoing remediation, including operational data on 1. A description of the groundwater sam- the mass of contaminant removed from pling event, including field logs. Field the subsurface, system operating time,the logs shall contain depth to water,method effectiveness of the remediation system, of purging,water quality parameters,vol- and any field notes pertaining to the op- ume of water purged, site conditions, and eration and maintenance of the system. any changes noted in the condition of the well and/or water quality data. 10. Method of disposal of any contaminated soil or water, and manifests for transport 2. A table(s)listing all monitoring well de- of all hazardous substances. tails including: well number,date in- stalled,casing diameter, casing material, 11. Applicable conclusions and recommenda- slot size, surveyed elevation,reference tions. For example, if the existing moni- elevation, screen interval, filter pack in- toring well network does not define the terval, and aquifer zone. lateral and vertical extent of groundwater degradation,the discharger is to submit a 3. Cumulative data tables containing all soil proposal and workplan to complete addi- and groundwater analytical results,report- tional work as needed to define the extent. ing limits, depth to groundwater, ground- water elevations and Analytical Once a year,preferably following the fourth Laboratory. quarter monitoring that includes one complete hydrologic cycle; the quarterly report is to in- 4. Groundwater elevation maps for appro- clude the following additional information: priate water bearing units, as applicable. If the site is in remediation with ground- 1. A description of all remedial activities water pump and treat operations,define conducted during the year,periodic and the zone of capture for any extraction cumulative removal rates, an analysis of well(s) on the contour map. system effectiveness and operational schedule, and plans to optimize remedia- 5. A groundwater flow diagram showing tion system effectiveness, if appropriate. historical flow directions and gradients (Rose Diagrams). 2. An analysis of whether the contaminant plume is being remediated effectively, or 6. Isoconcentration contour maps for petro- is continuing to migrate. leum products and constituents in appro- priate water bearing units, as applicable. 7. A printed copy of the laboratory analyti- cal data report. Water samples are to be analyzed for the appropriate minimum verification analyses specified in Table