cover letter - GreenBison IV Consultants, Inc. October...

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GreenBison IV Consultants, Inc. October 19 th , 2004 Dr. Shu-Guang Li A133 RCE Michigan State University East Lansing, MI 48823 (517) 432-1929 Dr. Shu-Guang Li: We are pleased to inform you that we have completed Project #1, the Wellhead Protection Program for a Small Community. The following report includes: An executive summary; An introduction including background information, objectives, a site description and conceptual representations; A methods section including the approach, numerical theory, and solution methods; Results of the of the project study using Interactive Groundwater version 3.5.1; An analysis and discussion of the study including assumptions and justifications; Conclusions and recommendations specifically addressing the concerns and health of the community; A Wellhead Protection Program; References; and Appendices Please feel free to contact us if you have any questions, comments, or concerns. Sincerely, Timothy Greenleaf Heather Halbeisen Craig Forshee greenl20@msu.edu halbeise@msu.edu forshee3@msu.edu Enc/report
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Project #1 Wellhead Protection Program for a Small Community Heather Halbeisen – A28951591 Craig Forshee – A31566447 Tim Greenleaf – A29810181 CE 421 - October 19 th , 2004
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EXECUTIVE SUMMARY A recent monitoring study indicated that TCE contaminant plumes are present in the groundwater near the Boeing & Cascade industrial sites. A community near these sites, which uses water from the same aquifer as their sole source of drinking water supply, is concerned that the plumes will contaminate their water supply. GreenBison IV consultants modeled the scenario using IGW 3.5.1 software. The results of the study indicate that the TCE plume near the Boeing site will reach the community’s west pumping well in approximately 41 years at the current pumping rates. The east well will not be effected by either contamination plume. Additional results of the assessment include a safe-yield pumping rate of 42 GPM and 188 GPM from the west and east wells respectively, the contribution/recharge areas for the pumping wells, and additional effects of pumping rates on the plume migration. The implementation of a Well Head Protection Program (WHPP) is recommended. The WHPP includes alternatives for remediation of the TCE contamination and outlines the steps to protect the integrity of the community drinking water supply including prevention of future contamination. 1.0 INTRODUCTION Background A small community is pumping groundwater from a confined sandstone aquifer for their drinking water supply. Results from a recent monitoring study indicate that the aquifer is contaminated by a TCE plume near the Boeing and Cascade sites up-gradient of the wells. The wells, which are currently not contaminated, are the community’s exclusive source of drinking water. As a result, citizens of the community are extremely concerned that the safety of their drinking water will be compromised. Trichloroethylene (TCE) is a colorless or blue organic liquid with a chloroform-like odor.
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This note was uploaded on 04/19/2010 for the course CE 421 taught by Professor Shu-guangli during the Spring '05 term at Michigan State University.

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cover letter - GreenBison IV Consultants, Inc. October...

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