A person who receives a notice from a regional board pursuant to Section 25208.7 or who files an application for an exemption pursuant to Section 25208.5 or 25208.13, shall submit a hydrogeological assessment report to the regional board. A qualified person shall be responsible for the preparation of the report and shall certify its completeness and accuracy. The report shall contain, for each surface impoundment, any information required by the state board or the regional board, and all of the following information: (a) A description of the surface impoundment, including its physical characteristics, its age, the presence or absence of a liner, a description of the liner, the linerâs compatibility with the hazardous wastes discharged to the impoundment, and the design specifications of the impoundment. (b) A description of the volume and concentration of hazardous waste constituents placed in the surface impoundment, based on a representative chemical analysis of the specific hazardous waste type and accounting for variance in hazardous waste constituents over time. (c) A map showing the distances, within the facility, to the nearest surface water bodies and springs, and the distances, within one mile from the facilityâs perimeter, to the nearest surface water bodies and springs. (d) Tabular data for each surface water body and spring shown on the map specified in subdivision (c) that indicate its flow and a representative water analysis. The report shall include an evaluation and characterization of seasonal changes and, if substantive changes result from season to season, the tabular data shall reflect these seasonal changes. (e) A map showing the location of all wells within the facility and the locations of all wells within one mile of the facilityâs perimeter. The report shall include, for each well, a description of the present use of the well, a representative water analysis from the well, and, when possible, the water well drillerâs report or well log. (f) An analysis of the vertical and lateral extent of the perched water and water-bearing strata that could be affected by leachate from the surface impoundment, and the confining beds under and adjacent to the surface impoundment. This analysis shall include all of the following: (1) Maps showing contours of equal elevation of the water surface for perched water, unconfined water, and confined groundwater required to be analyzed by this subdivision. (2) An estimate of the groundwater flow, direction of the perched water, and all water-bearing strata on both the maps and the subsurface geologic cross sections. (3) An estimate of the transmissivity, permeability, and storage coefficient for each perched zone of water and water-bearing strata identified on the maps specified in paragraph (1). (4) A determination of the rate of groundwater flow. (5) A determination of the water quality of each zone of the water-bearing strata and perched water that is identified on the maps specified in paragraph (1) and is under, or adjacent to, the facility. This determination shall be conducted by taking samples either from upgradient of the surface impoundment or from another location that has not been affected by leakage from the surface impoundment. (g) An indication as to whether the groundwater is contiguous with regional bodies of groundwater and the depth measured to the groundwater, including the depth measured to perched water and water-bearing strata identified on the maps specified in paragraph (1) of subdivision (f). (h) The following climatological information: (1) A map showing the contours for the mean annual long-term precipitation for the surrounding region within 10 miles of the surface impoundment. (2) Calculations estimating the maximum 24-hour precipitation and maximum and minimum annual precipitation at the facility based upon direct measurement at the facility or upon measured values of precipitation from a nearby climatologically similar station. (3) The
‹ Prev All California sections Next ›
Lexace provides legal information, not legal advice, and no attorney–client relationship is created. Statute text is provided for general information and may not reflect the most recent amendments; verify against the official state code.