This notice announces EPA's establishment of the Chesapeake 
Bay (Bay) TMDL on December 29, 2010 for nitrogen, phosphorus and 
sediment for the Chesapeake Bay and its tidal tributaries. EPA provided 
a 45-day public review of the Draft Bay TMDL which was held from 
September 24 through November 8 of 2010. Based on comments and 
information EPA received from the public and affected jurisdictions 
during the public review period, EPA has revised the draft TMDL as 
appropriate and established the Bay TMDL for nitrogen, phosphorus and 
sediment for each of the 92 segments in the tidal portion of the 
Chesapeake Bay watershed pursuant to Sections 117(g) and 303(d) of the 
Clean Water Act (CWA). The TMDL provides pollutant loads for nitrogen, 
phosphorus and sediment which can enter a waterbody without causing a 
violation in the water quality standards. The TMDL allocates that 
pollutant load between point and nonpoint sources. The Bay TMDL 
contains segment specific point (wasteload) and non-point (load) 
allocations for nitrogen, phosphorus and sediment that when met will 
assure the attainment and maintenance of all applicable water quality 
standards for each of the 92 segments. The Bay TMDL is a key part of 
the clean water commitment in the Federal Strategy developed as part of 
Executive Order 13508 on Chesapeake Bay Protection and Restoration. EPA 
has worked closely with its federal partners, the six watershed states, 
the District of Columbia, local governments and other parties to put in 
place a comprehensive, transparent and accountable set of commitments 
and actions that together ensure that pollution controls needed to 
restore Bay water quality are implemented by no later than 2025 
(Executive Order, 13508).

EPA seeks public comment on the addition of a vapor intrusion component to the Hazard Ranking System for CERCLA's NPL.

EPA entered into a proposed administrative settlement under CERCLA that requires the settling parties to pay past and future U.S. response costs incurred at the D'Imperio Property Superfund site in Hamilton Township, New Jersey.

EPA entered into a proposed administrative settlement under CERCLA that requires the settling party to pay U.S. response costs incurred at the Peach Orchard Road Groundwater Plume site in Augusta, Georgia.

EPA proposed to incorporate American Society for Testing and Materials standards to allow the use of alternatives to mercury-containing industrial thermometers.

EPA proposed to grant a petition submitted by Gulf West Landfill to delist the leachate generated at its facility in Anahuac, Texas, from the lists of hazardous wastes.

EPA is providing notice of, and soliciting written comments 
on, a tentative determination to deny an administrative petition 
submitted by the Sierra Club under RCRA section 7004. EPA issued an 
earlier notice denying this same petition in November 2008. However, 
the Agency at that time failed to comply with notice and comment 
provisions in its regulations. Accordingly, we are now giving the 
public the opportunity to provide comments on this tentative decision. 
This petition requests EPA to reconsider the final rule, ``Regulation 
of Oil-Bearing Hazardous Secondary Materials from the Petroleum Refining Industry 
Processed in a Gasification System to Produce Synthesis Gas,'' 
published in the Federal Register on January 2, 2008. The EPA 
considered the petition, along with information contained in the 
rulemaking docket, and has tentatively decided to deny the petition. In 
a letter from EPA Assistant Administrator Mathy Stanislaus dated 
January 21, 2011, EPA provided the petitioner with its tentative 
decision to deny the petition for reconsideration. The letter explains 
EPA's reasons for tentatively deciding to deny the petition. After 
evaluating all public comments, as well as any other information in the 
rulemaking record, EPA will publish either a final denial of the 
petition or issue a proposed rule to amend or repeal the regulation.

EPA proposed to deny a petition submitted by the Sierra Club to reconsider its final rule on oil-bearing hazardous secondary materials.

EPA proposed to approve revisions to Minnesota's hazardous waste management program.

EPA Region 10 proposed to approve a modification to Alaska's municipal solid waste landfill program concerning research, development, and demonstration permit requirements; see above for direct final rule.