Monthly update for Sellers Auto / Artist Studio petroleum cleanup site 489201547 / 489201548 (tenth update- August 1, 2007)

From: Damon.Taylor@ocfl.net [mailto:Damon.Taylor@ocfl.net]
Sent: Wednesday, August 01, 2007 4:02 PM
To: Mills, Louise P21324
Cc: Carlos.Gonzalez2@ocfl.net; Renee.Parker@ocfl.net; hortonra@terramaxinc.com
Subject: Monthly update for Sellers Auto / Artist Studio petroleum cleanup site 489201547 / 489201548 (tenth update- August 1, 2007)

Ms. Mills,

I would like to take this opportunity to give you our tenth monthly update on the project. The startup occurred in late February 2007 and we are on a 4-year cleanup schedule.

There isn’t very much of a change to report on since my last one in early July, so I will narrow it down to the following components:

Vapor Recovery System Update:
This part of the system that is still down due to the need to use a catalytic oxidizer is down pending Orange County’s approval of the Remedial Action Plan Modification and the change order (cost increase) to bring in and hook up the oxidizer. Although neither the plan nor the change order are approved, I think it will be in the next couple of weeks. I will fill you in on a field notice when the above is fully approved.

The Groundwater Recovery System:
It is still running as was recently cleaned and adjusted. I spoke to Terramax today and they were in the field this week taking measurements from the individual wells as I had asked. I had been concerned that we weren’t able to accurately evaluate the recovery rate from each well and were only getting the total flows.

Report Status:
The Startup Report and the First Quarterly operation and maintenance report are currently being reviewed as well as the Remedial Action Plan Modification to implement the oxidizer. I spoke with David Jones, P.E. of our office here at Orange County and he expects the review will be completed today. The next report due from Terramax is the Second Quarterly operation and maintenance report, which is due August 10th (expected to be extended by 30 days to ensure that it contains a full quarter of data).

Milestone Update:
This section of the monthly update will be the most useful to show the reduction in contaminants. We only get data once per quarter though so the next set will not be available for about six weeks. Although no new groundwater data is available since the last update, I am providing you with the tables this time in a PDF format that show all the key performance evaluation monitoring wells (AW-3, AW-7, AW-11, AW-22, AW-24 and MW-5). There are two pages per well in the attached PDF and I penned in where we currently are in the milestone schedule. There is no data for AW-7 and AW-24 because they were both dry. The water table should come up and be able to be sampled during the next sampling event though.

You will see very large drops in contamination levels in some wells, and some unfavorable changes in levels in others. It is not unusual to meet milestones for some contaminants and not meet them for others in the same well. However, this is not a trend we wish to continue to allow. The problem areas are indicated with the row for “milestone met” that reads “no”. Generally we expect that with a system running a high run time and high performance efficiency that we won’t see any milestones missed. If milestones are not met two quarters in a row, a notice of non-performance in accordance with the Remedial Action Initiative (RAI) criteria is sent and corrective action must be taken by the contractor.

first milestone tables for BTEX and Naphthalenes.pdf

SitePlan.pdf

I will need to be late on my next update as I will be out of town from the afternoon of August 24th through September 12th. I can give you an update when I get back though. Please feel free to call me anytime if you need additional information or if you would like me to find something in our files. Also. I am always available to meet you onsite if you want to show me of any concerns you have.

Damon Taylor CFEA, LEP
Orange County Environmental Protection Division
Petroleum Cleanup Team
800 N. Mercy Drive, Suite 4, Orlando, FL 32808
Voice (407) 836-1480, Fax (407) 836-1417

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