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Our groundwater modeling services include the following : · On-site supervision of monitoring well installation, including soil sample collection, completion of boring logs and well installation diagrams. Utilization of existing groundwater monitoring wells where possible. · Collection of groundwater samples from the wells in accordance with DEP and EPA guidelines. Submittal of selected samples for laboratory analysis, and review of the analytical data. · Determination of aquifer hydrologic parameters through the use of slug tests and/or pumping tests. · Creation and calibration of a 2D or 3D groundwater flow model typically using Visual MODFLOW. Models are as detailed as necessary to address the Site situation and proposed alterations. · For proposed septic systems under Title V (MA), the concentration of nitrates at the downgradient property line and the height of the groundwater mound under the system are the most common conditions modeled. · Hydrogeologic Report preparation documenting the conduct and findings of the investigation and modeling efforts in support of a groundwater discharge permit. |
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Groundwater contours and nitrate particle paths for a proposed septic leach field. |
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Nitrate plume diagram, indicating acceptable estimated concentrations at the property boundary. |

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CASE STUDY |
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Hydrogeologic Evaluation: |
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Groundwater Modeling Of Proposed Septic Systems Septic Mound Height Estimation Littleton , MA |