Section Env-Or 606.06 - Site Geology and Hydrology The site investigation report shall include a description of the geology and hydrogeology of the site including:
(a) Groundwater potentiometric surface(s), hydraulic gradients, flow direction, hydraulic conductivity, and seepage velocity;(b) Soil types, distribution, and permeability;(c) When encountered and drilled, bedrock type and characteristics, including depths and contours;(d) Geologic cross-sections to describe the geology and hydrogeology of the site including the following: (1) One cross-section parallel to groundwater flow and one cross-section perpendicular to groundwater flow;(2) The horizontal and vertical scale of each cross-section;(3) Approximate ground surface elevations and inferred elevation of contacts between the major geologic units;(4) A complete textural description of the major soil and bedrock units, with geologic interpretation, such as fill, till, stratified drift, weathered bedrock;(5) The location of all data sources, including soil borings, monitoring wells, test pits, and bedrock cores upon which the geologic interpretations are based;(6) The line of section referenced to an appropriate site plan;(7) The offset distance for all data points not located directly on the line of section;(8) The screened interval of all groundwater monitor wells and piezometers, with measured water level or potentiometric surface elevations;(9) The surveyed elevations of any surface water features intercepted by the line of section; and(10) Contaminant concentrations at each data point indicated on the cross-section;(e) A table of groundwater elevation data including:(1) Groundwater elevations;(2) Top of well casing elevations surveyed to the benchmark required under Env-Or 606.04(m)(4);(3) Measured depth to water table from top of casing;(4) If NAPL is present, measured depth to NAPL from top of casing; and(5) If NAPL is present, NAPL thickness;(f) A potentiometric surface map indicating the groundwater flow direction; and(g) Any other information that is necessary to describe the geology and hydrogeology of the site.N.H. Admin. Code § Env-Or 606.06
(See Revision Note at chapter heading for Env-Or 600) #8812, eff 2-1-07
Amended by Volume XXXV Number 23, Filed June 11, 2015 , Proposed by #10831, Effective 6/1/2015, Expires6/1/2025.