COMPLIANCE INFO_1973-2003 - Laserfiche WebLink

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Memo to Antonia Vorster/ -2- 1 May 1986 Jon Marshack 2. The amount of precipitation expected from the 24-hour/1,000 year and 24-hour/100 year storms. 3. Projected volume and pattern of runoff for the proposed facility including peak stream discharges from the 24-hour/1,000 year and 24-hour/1,000 year stroms. B. GEOLOGY 1. A geologic map and geologic cross-section of the area. 2. A description of natural geologic materials and the geologic structure of the area. 3. A soils map and an evaluation of the engineering and hydro- logical properties (soil classification, shrink -swell potential, infiltration rates) of the soils on-site. 4. An analysis of the stability and factors of safety, taking into account the maximum credible earthquake that can be expected at the facility. 5. Identification of any Holocene fault within 200 feet of the faci 1 i ty. 1. An evaluation of the water -bearing characteristics of the geologic materials in the area, including estimates of permea- bility, the vertical and areal extent of all unconfined, con- fined, and perched ground waters; and the rationale used to determine the above. 2. The depth to ground water bodies identified, including the dates and locations of measurements used. 3. An evaluation of the direction of ground water movement, in- cluding consideration of any recharge areas under or within one (1) mile of the facility perimeter and a map showing contours of equal elevation of the potentiometric surface for the principal water -bearing zone, for the uppermost aquifer, and for any perched ground water bodies. 4. An evaluation of the in situ permeability of soils immediately underlying the waste management unit. This evaluation shall include: a. Permeability data, in tabular form, for selected locations within the waste management unit;