The 2011-12 Audit Case Study looks at a potential vapor intrusion situation.

We are going to try something different and "high-tech." In order to make the training available to more LSPs in a larger venue, we'll be using "clickers" to vote on some issues during the first portion of the discussion (covering the overall case and the homework) before breaking up into smaller workgroups to review additional material and discuss new findings. We will have a short tutorial on the use of the clickers before we dive into the case.

For homework this year, you will:

  • Review the Class A-2 RAO for the primary Site. The property has been repurposed from its original uses and includes several other RTNs rolled into the primary Site and one associated Class A-3 RAO with AUL;
  • Use the RAO screening form as a "guide" as you review the case. You may either fill out the entire RAO Screening form for the (primary) Site (you may want to also look at the A-3 RAO) OR you may only want to focus on areas where you most would anticipate problems, based on the nature of the site;
  • Make a list of up to 3 things that might be of interest/concern you about the Site and make a decision whether you would subject this to an L3 audit;
  • Come up with a "back of the envelope" indoor air/vapor intrusion screening plan.

Included in the documents uploaded for the "homework" are:

If you have limited time, please focus on the Class A-2 RAO (the Class A-3 is largely for asbestos found at the site). We leave it up to you to play auditor, and decide:

  • Is the RAO a sufficient "stand alone" document sufficient to help you to determine whether or not there are potential vapor intrusion issues at the site;
  • If not, what additional information would you likely review, or would you want to collect to make decisions about the RAO?
  • If you were going to place some vapor sampling canisters or soil vapor sampling points - where would they be placed?

As with previous years, each LSP must present the written portion of the homework at registration before the class: 1. what you completed on the RAO Screening Form OR your notes about the site, and 2. responses to the Homework Questions. Per LSP Board regulations, no partial credit may be given for the class.

The discussion in the first portion of the class (using clickers) will involve some review and "voting" on site assessment issues and related discussion. In the smaller break out groups additional information will be handed out for review and discussion. The larger group will reconvene for the last half hour for review of the NOAF and panel discussion on current conditions.

It should be noted that the homework documents will NOT be redistributed in class so you should bring whatever documents you feel you need to discuss the homework and additional assessment work.

Remember, the purpose of this training is to foster better understanding of what is involved in a MassDEP audit. Please do not hesitate to contact or if you have any additional questions regarding the reading or written "assignment".