Quartz Vein Impact on Hydraulic Conductivity and Solute Transport through Quartz-Phyllite Saprolite

Autor:	Michael J. Vepraskas, M. T. Hoover, J. P. Williams
Rok vydání:	1994
Předmět:	education.field_of_study Environmental Engineering Phyllite Population Mineralogy Management Monitoring Policy and Law Saprolite Pollution Hydraulic conductivity Loam education Vein (geology) Waste Management and Disposal Quartz Geology Groundwater Water Science and Technology
Zdroj:	Journal of Environmental Quality. 23:202-207
ISSN:	0047-2425
DOI:	10.2134/jeq1994.00472425002300010031x
Popis:	Saprolite cannot be used for on-site wastewater disposal in North Carolina if it has quartz veins within 60 cm (2 ft) of the septic trench bottom, because it is believed such features could transmit raw sewage quickly to groundwater. A quartz phyllite saprolite was sampled to compare the saturated and unsaturated hydraulic conductivities between samples with and without quartz veins. The fine sandy loam saprolite had veins that were approximately 0.8 cm wide and comprised 0.2 cm 2 /cm 2 of the sample's cross-sectional area. The mean saturated hydraulic conductivity values of 32 undisturbed cores with veins and 27 cores without veins were not significantly different (a=0.10) and the geometric mean for a combined population was 0.85 cm/h
Databáze:	OpenAIRE
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