Contamination from sand-bentonite seal in monitoring wells installed in aquitards

• Published in: Ground water Vol. 35; no. 1; pp. 39 - 46
• Main Authors: Remenda, V.H. (Queen's University, Kingston, Ontario, Canada.), Van Der Kamp, G
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.01.1997; Ground Water Publishing Company
• Subjects: AGUAS SUBTERRANEAS; ARENA; BENTONITA; BENTONITE; BROMURE; BROMUROS; CALIDAD DEL AGUA; CAPA FREATICA; Chemistry; CHLORURE; CLORUROS; CONTAMINACION; CONTAMINATION; CONTROLE CONTINU; EAU SOUTERRAINE; Experiments; Groundwater; MINERAL ARGILEUX; MINERALES DE ARCILLA; NAPPE SOUTERRAINE; POTASIO; POTASSIUM; POZOS; PUITS; QUALITE DE L'EAU; SABLE; Sand & gravel; SASKATCHEWAN; Seals; SODIO; SODIUM; SOLUTE; SOLUTO; SULFATE; SULFATOS; TECHNIQUE DES TRACEURS; TECNICAS DE TRAZADORES; VIGILANCIA; Wells

A six year field experiment has shown that a sand-bentonite mixture used to seal monitoring wells in aquitards contributes solutes to the ground water sampled from these wells. Monitoring wells were installed at field sites with hydraulic conductivity (K) ranging from 5 X 10(-9) m/s to 3 X 10(-11) m...