000			02327cam a22003137a 4500
008			021216t2002 dcuabdoerb i000 0 eng d
020			_a0821349511
020			_a9780821349519
040			_aUSP/SIBI _cUBA
050	0	0	_aTD426 _b.G753 2002
082			_aR 628.1 _bFOS
100			_aFoster, Stephen.
245	0	0	_aGroundwater quality protection : _ba guide for water utilities, municipal authorities, and environment agencies /
260			_aWashington, D.C : _bWorld Bank, _cc2002.
300			_avii, 103 p. :ill,
504			_aIncludes bibliographical references: p. 100-103.
520			_aThe focus of the current study was to evaluate whether the present regulatory limits established for biosolids pollutants (e.g., heavy metals) were sufficiently protective of human health associated with potential groundwater consumption using a new EPA risk assessment tool. Application of the RCST to two biosolids land application sites located near Columbus, Georgia predicted that, when the depth to groundwater was maintained at a distance of at least 2 m, regulated pollutant concentrations as large as ten (10) times the current regulatory limit (i.e., Title 40 of the US Code of Federal Regulations Part 503 - Ceiling Concentration Limit) could be safely land applied at rates as high as ninety (90) Megagrams per hectare (Mg ha-1) with no apparent non-carcinogenic human health effects associated with groundwater consumption. At these pollutant concentrations, the HQ ranged from 1.79 x 10-9 for cadmium to 3.03 x 10-3 for selenium. Only under unrealistically high biosolids application rates were the public health risks associated with groundwater impairment characterized as significant (HQ ≥ 1.0). For example, when the biosolids application rate was increased to 450 Megagrams per hectare (Mg ha-1) and the pollutant concentrations were increased to ten times the 40 CFR Part 503 Ceiling Concentration Limit, a HQ value of 2.23 was estimated (selenium).
590			_aaia 22/09/2016
591			_aRef
650		0	_aGroundwater.
650		0	_aHydrogeology.
650		7	_aGroundwater quality protection policies--Rocky Mountain region.
700	1		_aHirata, Ricardo.
700	1		_aGomes, Daniel
700	1		_aD'elia Monica
700	1		_aParis Marta
942			_2ddc _cBOOK
949			_aR 628.1 FOS
999			_c4912 _d4912