Published on November 8, 2007
Understanding the MRBCA Program: Understanding the MRBCA Program UST Program Implications Petroleum Storage Tank Insurance Fund May 2004 MO’s “Old” Cleanup Req’ts for Tank Sites:: MO’s “Old” Cleanup Req’ts for Tank Sites: DNR has issued “No Further Action Letters” for about 9500 sites where tanks were removed or leaks/spills occurred and cleanups have been completed. Though the cleanup numbers varied some, depending on the site, the majority of those used the same “default cleanup standards” for BTEX & TPH. MO’s “Old” Req’ts, cont.: MO’s “Old” Req’ts, cont. At some sites, it was impossible to clean up the shallow water to meet those requirements. At others, the cost of meeting the TPH number was very high and the cleanup standard was lower than necessary. Slide4: Regulations and Guidance Site Characterization Risk Assessment Corrective Action or Risk Management Every cleanup is/has been “risk based.” Slide5: Regulations and Guidance What’s There? Is It A Problem? What Shall I Do About It? Every cleanup is/has been “risk based.” Major Changes under the “New System” for Tank Site Cleanups:: Major Changes under the “New System” for Tank Site Cleanups: Site-specific and exposure pathway-specific cleanup targets Chemicals of Concern Sampling/Lab methods Need to determine land use Major Changes, cont.: Major Changes, cont. Closure sampling & groundwater assessment Order of tasks/reports Software & Report formats Analysis -- not just reporting of data NFA Letter format/content 2. Chemicals of Concern:: 2. Chemicals of Concern: BTEX MTBE TPH-GRO TPH-DRO BTEX All oxygenates TPH - GRO TPH - DRO TPH-ORO PAHs EDB, EDC Under Old Guidance: Under New Guidance: A caution…: A caution… In some cases, you will want to evaluate whether it makes sense to use the new COC list, or stick with the old. E.g., If the tanks were removed some time ago, and/or considerable work has been done already, it may not be necessary to expand the COCs. 3. Sampling/Lab Methods: 3. Sampling/Lab Methods Glass jars Lab Method 8015 (OA1/OA2) Encore/Terra Core Samplers (method 5035) Lab Methods 8260B, 8270C (GC/MS) Under Old Guidance: Under New Guidance: A caution...: A caution... Be thoughtful about whether to use the new methods, especially if you only need limited additional data and you have considerable data collected with the old methods. Another caution...: Another caution... Pay attention to what you report to the DNR and PSTIF, depending on what other activities have been conducted on the site. I.e., It may not be in your client’s best interest to report all volatile organics. 4. Land Use: 4. Land Use No difference in cleanup targets, regardless of land use Current land use and “reasonably anticipated future use” (RAFU) must be determined & documented May vary for different portions of site Under Old Guidance: Under New Guidance: What is “RAFU?”: What is “RAFU?” Reasonably Anticipated Future Use -- “Future use of a site that can be predicted with a reasonably high degree of certainty given historical use, current use, development or use plans, local government planning & zoning, regional trends and community acceptance.” A misperception...: A misperception... Cleaning up a site to non-residential standards does not require a “deed restriction.” Only the pathways of concern must be addressed - either via remediation or an AUL. If the exposure pathway is not of concern, it need not be addressed. A caution...: A caution... The policy on “Activity and Use Limitations” is different for tank sites than for other types of cleanups. 5. Samples at UST Closure:: 5. Samples at UST Closure: See Chapter 4 in RBCA Tanks Guidance More samples required Some or all may not be paid by PSTIF, depending on results Groundwater assessment may be required A caution...: A caution... In some locations, the need for groundwater sampling after tank removal may not be necessary Evaluate, then communicate with DNR and PSTIF 6. Order of Tasks: 6. Order of Tasks Often removed tanks first, then Site Characterization, then Corrective Action May now do Tier 1 & 2 Risk Assessment first to establish site cleanup targets, then Site Characterization, then remove tanks Under Old Guidance: Under New Guidance: A caution...: A caution... How do you maximize PSTIF benefits for your client? Document evidence of release early in process with lab data 7. Software & Reports: 7. Software & Reports Software was not typically used Report format varied more Excel Forms on DNR website for organizing and formatting information Software for calculating site-specific targets Under Old Guidance: Under New Guidance: A caution…: A caution… PSTIF will not pay to recreate maps, data tables, etc. for those sites where that information already exists. You may have to photocopy and resubmit some of this information Another caution...: Another caution... Be smart in how you plan and prepare reports. Just because there are many separate reports described in the Guidance Document does not mean you must prepare that many, and does not mean PSTIF will pay for that many! (We like smart, thoughtful, efficient consultants!) 8. Consultant Analysis: 8. Consultant Analysis Too many reports simply presented data Too few analyzed what the data meant Too few had a plan for NFA Consultants must exercise more professional judgement More effort required for communications Under Old Guidance: Under New Guidance: A caution...: A caution... PSTIF will not pre-approve costs for activities unless the purpose of the work is made clear PSTIF will not pay for reports that only present data, and do not contain analysis What Has NOT Changed:: What Has NOT Changed: Costs must be pre-approved. PSTIF adjusters will be onsite. PSTIF will only pay for the most cost-effective solution. PSTIF may require owner to evaluate other alternatives than initially proposed. One final thought...: One final thought... At some sites with “old claims,” you may have enough data to do a Tier 1 or Tier 2 risk analysis to determine whether there is any need for further action, without any additional field work.