TY - RPRT TI - Health-based screening levels to evaluate U.S. Geological Survey ground water quality data AU - Patricia L. Toccalino AU - Julia E. Norman PY - 2006 DO - 10.1111/j.1539-6924.2006.00805.x UR - https://pubs.usgs.gov/publication/70028105 ID - 70028105 ER -