Sources of risk in the Lower Liao River.

<p>Sources of risk in the Lower Liao River.</p

Location of the study area.

<p>Location of the study area.</p

Risk source normalization in the study area.

<p>Risk source normalization in the study area.</p

Regional Groundwater Environment Risk assessment RRR in the study area.

<p>Regional Groundwater Environment Risk assessment RRR in the study area.</p

Distribution of the chemical enterprises in the study area.

<p>Distribution of the chemical enterprises in the study area.</p

Exposure and response of risk Sources, Receptors, and Endpoints in the regional groundwater conceptual models.

<p>Exposure and response of risk Sources, Receptors, and Endpoints in the regional groundwater conceptual models.</p

The Receptor ranks in the study area.

<p>Note: In “<i>the Chinese Groundwater Quality Standards</i>(GB/T 14848–93), which divides the groundwater quality into five categories (I, II, III, IV and V, respectively), indicates the good or bad quality of groundwater, Class I and II is suitable for various purposes, Class III is applicable to centralized drinking groundwater sources, or for industry and agriculture, Class IV and V represents poor water quality, should be strictly processed to use.</p><p>The Receptor ranks in the study area.</p

Groundwater vulnerability index(GVI) in the study area.

<p>Groundwater vulnerability index(GVI) in the study area.</p

The relative risk value calculations for representative points.

<p>GEI, Groundwater exploitation intensity; DD,Drainage density. CED,Chemical enterprise density; AP, Agriculture proportion; SEI, Sewage emission intensity; DWI, Dangerous waste intensity; FP, Forest proportion; DI, the relative groundwater vulnerability index; GQC, Groundwater quality category; GS, Groundwater supply; RV, risk value; RRV, Relative risk value; RRR, Relative risk rank.</p><p>The relative risk value calculations for representative points.</p

Sensitivity analyses on factors of relative risk models for representative points in Xinmin.

<p>DI, Relative groundwater vulnerability index; GEI, Groundwater exploitation intensity; DD, Drainage density; GS, groundwater supply; SEI, Sewage emission intensity; DWI, Dangerous waste intensity; CED, Chemical enterprise density; GQ, groundwater quality; FP, Forest proportion; AP, Agriculture proportion.</p