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Tri Regional Recommendation Page 6 of 24 Appendix A Note: To satisfy Basin Plan requirements and Resolution No. 88-63,which states in part" • Copies of drillers and/or geologist logs for all surface and ground waters of the State are drilling and construction. considered to be suitable, or potentially suit- able, for municipal or domestic water sup- • Appropriate field notes from well develop- ply..."see Table 1, for a list of Numerical ment with descriptions of parameter stabili- Water Quality Limits for Petroleum Based zation(e.g.tables showing pH, electrical Fuel components for protection of existing conductivity,temperature,turbidity, devel- or potential sources of drinking water. opment method, and volume of groundwater purged from the well). These Limits change from time-to-time. The current list of numerical limits may be found Type of drilling rig equipment used for well on the internet at construction,names of the driller and super- http://www.waterboards.ca.gov/water_issues vising field geologist,plus any difficulties /programs/water_quality_goals/search.shtml. encountered during drilling that could affect the future quality of data from the well. • Appropriate conclusions, and recommenda- tions for additional work, as necessary. Workplans and summary reports are to be prepared and submitted to the LIA and Regional Board until Monitoring well diagrams are to represent the the lateral and vertical extent of contamination is completed well and show or describe the fol- defined. The proposed additional work may be lowing: submitted separately, or with the quarterly status reports. • An accurate depiction of monitoring well construction. Please note that site conditions may warrant in- terim cleanup and removal actions before the lat- • Types and quantities of materials placed in eral and vertical extent of contamination is the borehole. completely defined. For interim remedial actions,the discharger shall follow the • Placement method of the annular seal mate- requirements outlined in the UST Regulations, rials, (e.g.pumped through a tremie pipe, or §2722(b). poured from the surface). • Location of screen interval,transition seal, and sanitary seal details. • Nominal inner diameter(ID)and outer di- ameter(OD) of the auger and casing.