The Wise Report
Henry M. Wise, P.G.
July 31, 2011
The Texas Commission on
Environmental Quality (TCEQ) has revised the total petroleum hydrocarbon (TPH)
spreadsheet for calculating TRRP Tier 1 protective concentration levels (PCLs)
with the latest TPH toxicity factors. The TPH spreadsheet can be downloaded
from the TRRP PCL Web page at http://www.tceq.state.tx.us/remediation/trrp/trrppcls.html.
The TCEQ Remediation
Division announces the availability of a new TRRP guidance document,
RG-366/TRRP-2A Closure of Waste-Management Units Subject to TRRP, issued
July 2011. Access it from the TRRP Guidance and Forms page at http://www.tceq.texas.gov/remediation/trrp/guidance.html.
This document bridges
the gap between the limited closure guidance provided in TRRP-2 and the
guidance focused on hazardous waste units in TRRP-3. The primary emphasis of
TRRP-2A is the closure of waste-management units listed on the solid waste
notice of registration. Major topics include:
·
Overview of the closure
process, including the applicability of TRRP to waste unit closures, the
closure performance standard, relation to remedy standards, and administrative
details.
·
Details of the closure
process including unit deactivation and waste management, release determination
and response.
·
Contents of a closure
report and possible combinations with TRRP standardized reports.
·
Model deed notice