To complete your role-play as an environmental consultant, you will prepare a letter report summarizing the work you performed to locate the plume and to select the most appropriate remediation design for cleanup. Your audience is the state environmental regulatory agency. The regulatory agency must approve your design before the pipeline company can implement it.

Keep in mind that your audience is a technical one and you are writing on behalf of your client, the pipeline company. You are the expert and your goal in this report is to convince the regulators that your design will remove the contamination from the groundwater, protect River City's water supply, and is cost-efficient.

Your letter report should be 5-7 single-spaced pages in length including up to 5 figures or tables following a letter format. Emphasize the results of your company's fieldwork, a description of the most appropriate remediation design based on one of the three technologies, and a clear statement of why your design is the best choice for cleanup. Choose your words carefully and avoid details and repitition. Above all your writing should be concise.

Address your letter report to:

Mr. I.B. Theman, PE, Head
Envirornmental Remediation Division
Anystate Environmental Protection Agency
Brownfields Plaza
Capital City, Anystate 00000-0000

Your company's address is:

Plume Busters R Us
12345 Stuck in the Mud Highway
East Overshoe, Anyotherstate 99999-9999

Use the following outline:

• Date
• Recpient and address
• Salutation
• Your purpose for writing
• Brief description environmental problem you were hired to resolve
  • Problem description including the results of the work done by the emergency response team.
  • Why is it so important to clean up the chromium contamination?
• Important results
• Brief description of the site
  • Where is the site located?
  • Is there an aquifer at the site and is it used for water supply?
• Brief description of the procedures your company followed
  • How did you locate the plume?
  • How many monitoring wells did you install to locate the plume?
  • What data did you collect from the monitoring wells
  • Which remediation technologies did you evaluate?
  • What procedures did you follow to make your evaluation of the technologies and possible designs?
• Presentation of the analyses you performed and results
  • How did you locate the plume and what problems did you encounter?
  • Make comparisons between the three remediation technologies.
  • What comparisons did you make to determine the most cost-effective technology design?
  • With regard to the P & T technology, what strategy would you adopt to insure that chromium-contaminated water is not being returned to the aquifer after treatment with the Forager™ polymer?
  • With regard to the ISRM technology:
    • What is the volume of sodium dithionite solution to be injected in each well?
    • How much sodium dithionite must be added to make up the solution to be injected?
    • With an injection rate of 50 gallons per minute, how long will it take to inject solution into the aquifer?
    • Will all of the sodium dithionite solution be withdrawn from the aquifer after it has reacted with the reducible iron in the aquifer? What strategy would you use to insure this?
  • With regard to the PRB design you created, what factors determine its dimensions?
  • Where would you place monitoring wells to insure that each of the remediation designs is performing adequately?
• Discussion of the results
  • What convinced you that the design you are advocating is the best?
  • Support all conclusions with evidence
• Recommendations
  • Identify the best remediation technology and describe your final design.
  • Concise statement of why these are the best choices (cost, probability of success)
• Signature and position in the company
• The position you hold in your company is Senior Environmental Scientist or Engineer depending on your preference
• Attachments
  • All calculations
  • Screen shots of the Map View window showing
    • The monitoring well locations at the conclusion of Locate the Plume.
    • The remediation design you are advocating.