Document ID: EPA-HQ-SFUND-1989-0008-0116
Agency: epa
Document Type: Rule
Title: National Priorities List: National Oil and Hazardous Substances Pollution Contingency Plan; Partial Deletion of the North Penn Area 6 Superfund Site
Posted Date: 2016-12-23T05:00Z

[Federal Register Volume 81, Number 247 (Friday, December 23, 2016)]
[Rules and Regulations]
[Pages 94262-94267]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2016-31032]

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ENVIRONMENTAL PROTECTION AGENCY

40 CFR Part 300

[EPA-HQ-SFUND-1989-0009; FRL-9957-31-Region 3]

National Oil and Hazardous Substances Pollution Contingency Plan; 
National Priorities List: Partial Deletion of the North Penn Area 6 
Superfund Site

AGENCY: Environmental Protection Agency.

ACTION: Direct final rule; notice of partial deletion of the North Penn 
Area 6 Superfund Site from the National Priorities List.

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SUMMARY: The Environmental Protection Agency (EPA) Region III is 
publishing a direct final notice of partial deletion of a portion of 
the North Penn Area 6 Superfund Site (Site) located in Lansdale 
Borough, Montgomery County, Pennsylvania, from the National Priorities 
List (NPL). The deletion affects approximately 6.5 acres located at 135 
East Hancock Street (the ``Administrative Parcel''). The NPL, 
promulgated pursuant to section 105 of the Comprehensive Environmental 
Response, Compensation, and Liability Act (CERCLA) of 1980, as amended, 
is found at Appendix B of the National Oil and Hazardous Substances 
Pollution Contingency Plan (NCP). This direct final partial deletion is 
being published by EPA with the concurrence of the Commonwealth of 
Pennsylvania, through the Pennsylvania Department of Environmental 
Protection (PADEP), because EPA has determined that all appropriate 
response actions at the Administrative Parcel under CERCLA, other than 
five-year reviews, have been completed. However, this partial deletion 
does not preclude future actions at the Administrative Parcel under 
Superfund.
    This partial deletion pertains to soils and groundwater of the 
Administrative Parcel portion of the Site. The other portions of the 
Site will remain on the NPL, and are not being considered for deletion 
as part of this action.

DATES: This direct final partial deletion is effective February 21, 
2017 unless EPA receives adverse comments by January 23, 2017. If 
adverse comments are received, EPA will publish a timely withdrawal of 
the direct final partial deletion in the Federal Register informing the 
public that the partial deletion will not take effect.

ADDRESSES: Submit your comments, identified by Docket ID no. EPA-HQ-
SFUND-1989-0009, by one of the following methods:
     http://www.regulations.gov. Follow on-line instructions 
for submitting comments.
     Email: ngo.huu@epa.gov.
     Mail: U.S. Environmental Protection Agency, Region III, 
Attn: Huu Ngo (3HS21), 1650 Arch Street, Philadelphia, PA 19103-2029
     Hand Delivery: U.S. Environmental Protection Agency, 
Region III, Attn: Huu Ngo (3HS21), 1650 Arch Street, Philadelphia, PA 
19103-2029, Phone: 215-814-3187, Business Hours: Mon. through Fri.--
8:00 a.m. to 4:30 p.m. Such deliveries are only accepted during the 
Docket's normal hours of operation, and special arrangements should be 
made for deliveries of boxed information.
    Instructions: Direct your comments to Docket ID no. EPA-HQ-SFUND-
1989-0009. EPA's policy is that all comments received will be included 
in the public docket without change and may be made available online at 
http://www.regulations.gov, including any personal information 
provided, unless the comment includes information claimed to be 
Confidential Business Information (CBI) or other information whose 
disclosure is restricted by statute. Do not submit information that you 
consider to be CBI or otherwise protected through http://www.regulations.gov or email. The http://www.regulations.gov Web site 
is an ``anonymous access'' system, which means EPA will not know your 
identity or contact information unless you provide it in the body of 
your comment. If you send an email comment directly to EPA without 
going through http://www.regulations.gov, your email address will be 
automatically captured and included as part of the comment that is 
placed in the public docket and made available on the Internet. If you 
submit an electronic comment, EPA recommends that you include your name 
and other contact information in the body of your comment and with any 
disk or CD-ROM you submit. If EPA cannot read your comment due to 
technical difficulties and cannot contact you for clarification, EPA 
may not be able to consider your comment. Electronic files should avoid 
the use of special characters, any form of encryption, and be free of 
any defects or viruses.
    Docket: All documents in the docket are listed in the http://www.regulations.gov index. Although listed in the index, some 
information is not publicly available, e.g., CBI or other information 
whose disclosure is restricted by statute. Certain other material, such 
as copyrighted material, will be publicly available only in hard copy. 
Publicly available docket materials are available either electronically 
in http://www.regulations.gov or in hard copy at:
     U.S. EPA Region III, Superfund Records Center, 6th Floor, 
1650 Arch Street, Philadelphia, PA 19103-2029;

[[Page 94263]]

(215) 814-3157, Monday through Friday 8:00 a.m. to 5:00 p.m.
     The Lansdale Public Library, 301 Vine St, Lansdale, PA 
19446; phone (215) 855-3228. Monday through Friday 10:00 a.m.-9:00 p.m.

FOR FURTHER INFORMATION CONTACT: Huu Ngo, Remedial Project Manager 
(3HS21), U.S. Environmental Protection Agency, Region III, 1650 Arch 
Street, Philadelphia, PA 19103-2029; (215) 814-3187; email: 
ngo.huu@epa.gov.

SUPPLEMENTARY INFORMATION:

Table of Contents

I. Introduction
II. NPL Deletion Criteria
III. Partial Deletion Procedures
IV. Basis for Partial Site Deletion
V. Partial Deletion Action

I. Introduction

    EPA Region III is publishing this direct final Notice of Partial 
Deletion of a portion the North Penn Area 6 Superfund Site from the 
National Priorities List (NPL). This partial deletion pertains to the 
soils and groundwater of the Administrative Parcel portion of the Site. 
The NPL constitutes Appendix B of 40 CFR part 300, which is the 
National Oil and Hazardous Substances Pollution Contingency Plan (NCP), 
which EPA promulgated pursuant to section 105 of the Comprehensive 
Environmental Response, Compensation and Liability Act (CERCLA) of 
1980, as amended. EPA maintains the NPL as the list of sites that 
appear to present a significant risk to public health, welfare, or the 
environment. Sites on the NPL may be the subject of remedial actions 
financed by the Hazardous Substance Superfund (Fund). This partial 
deletion of the North Penn Area 6 Site is proposed in accordance with 
40 CFR 300.425(e) and is consistent with the Notice of Policy Change: 
Partial Deletion of Sites Listed on the National Priorities List. 60 FR 
55466 (Nov. 1, 1995). As described in 40 CFR 300.425(e)(3) of the NCP, 
a portion of a site deleted from the NPL remains eligible for Fund-
financed remedial actions if future conditions warrant such actions.
    Section II of this document explains the criteria for deleting 
sites from the NPL. Section III discusses the procedures that EPA is 
using for this action. Section IV discusses the Administrative Parcel 
of the North Penn Area 6 Superfund Site and demonstrates how it meets 
the deletion criteria. Section V discusses EPA's action to delete the 
Administrative Parcel portion of the Site from the NPL unless adverse 
comments are received during the public comment period.

II. NPL Deletion Criteria

    The NCP establishes the criteria that EPA uses to delete sites from 
the NPL. In accordance with 40 CFR 300.425(e), sites may be deleted 
from the NPL where no further response is appropriate. In making such a 
determination pursuant to 40 CFR 300.425(e), EPA will consider, in 
consultation with the Commonwealth, whether any of the following 
criteria have been met:
    i. Responsible parties or other persons have implemented all 
appropriate response actions required;
    ii. all appropriate Fund-financed response under CERCLA has been 
implemented, and no further response action by responsible parties is 
appropriate; or
    iii. the remedial investigation has shown that the release poses no 
significant threat to public health or the environment and, therefore, 
the taking of remedial measures is not appropriate.
    Pursuant to CERCLA section 121(c) and the NCP, EPA conducts five-
year reviews to ensure the continued protectiveness of remedial actions 
where hazardous substances, pollutants, or contaminants remain at a 
site above levels that allow for unlimited use and unrestricted 
exposure. EPA conducts such five-year reviews even if a site is deleted 
from the NPL. EPA may initiate further action to ensure continued 
protectiveness at a deleted site if new information becomes available 
that indicates such action is appropriate. Whenever there is a 
significant release from a site deleted from the NPL, the deleted site 
may be restored to the NPL without application of the hazard ranking 
system.

III. Partial Deletion Procedures

    The following procedures apply to deletion of the Administrative 
Parcel portion of the Site:
    (1) EPA consulted with the Commonwealth of Pennsylvania prior to 
developing this direct final Notice of Partial Deletion and the Notice 
of Intent for Partial Deletion co-published today in the ``Proposed 
Rules'' section of the Federal Register.
    (2) EPA provided the Commonwealth 30 working days for review of 
this notice and the parallel Notice of Intent for Partial Deletion 
prior to their publication today, and the Commonwealth, through PADEP, 
concurred on the partial deletion of the Site from the NPL.
    (3) Concurrently with the publication of this direct final Notice 
of Partial Deletion, a notice of the availability of the parallel 
Notice of Intent for Partial Deletion is being published in a major 
local newspaper, The Reporter. The newspaper notice announces the 30-
day public comment period concerning the Notice of Intent for Partial 
Deletion of the Site from the NPL.
    (4) The EPA placed copies of documents supporting the partial 
deletion in the deletion docket and made these items available for 
public inspection and copying at the Site information repositories 
identified above.
    (5) If adverse comments are received within the 30-day public 
comment period on this partial deletion action, EPA will publish a 
timely notice of withdrawal of this direct final Notice of Partial 
Deletion before its effective date, and will prepare a response to 
comments and continue with the deletion process, as appropriate, on the 
basis of the Notice of Intent for Partial Deletion and the comments 
already received.
    Deletion of a portion of a site from the NPL does not itself 
create, alter, or revoke any individual's rights or obligations. 
Deletion of a portion of a site from the NPL does not in any way alter 
EPA's right to take enforcement actions, as appropriate. The NPL is 
designed primarily for informational purposes and to assist EPA 
management. Section 300.425(e)(3) of the NCP states that the deletion 
of a site from the NPL does not preclude eligibility for future 
response actions, should future conditions warrant such actions.

IV. Basis for Partial Site Deletion

    The following information provides EPA's rationale for deleting the 
Administrative Parcel portion of the Site from the NPL:

Site Background and History

    The North Penn Area 6 Superfund Site (EPA Identification Number 
PAD980926976) is located primarily in Lansdale Borough, Montgomery 
County, Pennsylvania. The Site is comprised of multiple properties 
contaminated primarily with volatile organic compounds (VOCs) in the 
soil and associated groundwater contamination. One of the properties 
consists of approximately 10 acres of land located at 135 East Hancock 
Street in Lansdale Borough (the ``Property''). The Property was 
formerly occupied by the Tate Andale Company, and later by the Rogers 
Mechanical Company. The Administrative Parcel is comprised of 
approximately 6.5 acres located within the Property.
    The current owner of the Property, including the Administrative 
Parcel, is

[[Page 94264]]

Andale Properties, LLC. Andale Properties, LLC plans to redevelop the 
Property for future residential purposes. Andale Properties, LLC has 
divided the Property into four Phases (1 through 4) for redevelopment. 
The Administrative Parcel is comprised of Phases 2 and 3.
    The Property is currently occupied by three buildings, portions of 
two former structures, and footers and concrete pads from previous on-
site buildings. A treatment system operated currently by EPA for 
treatment of groundwater and multiple monitoring wells are also present 
at the Property. The Property is bordered to the southwest by East 
Hancock Street, and to the west, northwest, and east by railroad lines. 
The ground surface elevation of the Property is approximately 370 feet 
above mean sea level. The Property consists of relatively flat terrain 
with a gradual slope towards the southwest. There are no surface water 
bodies located within the boundaries of the Property. The nearest body 
of water is the Towamencin Creek, which is located approximately 2,800 
feet southwest of the Property. Surface water runoff following 
precipitation events either infiltrates the ground surface or drains 
towards the western portion of the Property prior to entering a swale 
adjacent to the neighboring railroad tracks. Surrounding land use 
includes commercial, industrial, and residential uses.
    The Tate Andale Company formerly occupied the Property dating back 
to at least the 1920s, and historically used the Property to fabricate 
oil coolers, heaters, and strainers. Rogers Mechanical Company 
purchased the Property in 1985 and operated a plumbing and heating 
business. The former Tate Andale Company was one of twenty-six property 
owners/operators to be identified as a potentially responsible party 
(PRP) at the Site following the detection of groundwater contamination 
in the Lansdale area in 1979. North Penn Area 6 was proposed to the 
National Priorities List on January 22, 1987 (52 FR 27620), and became 
a Superfund Site when the listing became final on March 31, 1989 (54 FR 
13296). EPA divided the Site into three operable units (OUs). Operable 
Unit One (OU1) consists of Fund-financed response actions to address 
the contaminated soils at certain of the properties that comprise the 
Site. Operable Unit Two (OU2) consists of PRP-financed response actions 
to address the contaminated soils at certain other properties that 
comprise the Site. Operable Unit Three (OU3) consists of Fund-financed 
and PRP-financed response actions to address the contaminated 
groundwater over the entire Site. All activities associated with 
investigation and remediation at the Property were performed by EPA and 
financed by the Fund, and are part of OU1 and OU3. The Administrative 
Parcel consists of soils and groundwater on the aforementioned 
approximately 6.5 acre portion of the Property.

Remedial Investigation and Feasibility Study (OU1)

    Soils at the Property were investigated as part of the OU1 Remedial 
Investigation and Feasibility Study (RI/FS). The OU1 RI at the Property 
focused primarily on a coal ash and scrap metal pile located on the 
southwestern portion of the Property and another area on the eastern 
portion of the Property. Soil gas and soil samples were collected from 
these areas, and elevated levels of VOCs were found in the area on the 
eastern portion of the Property. Trichloroethylene (TCE) was detected 
at concentrations up to 4600 [mu]g/kg, and contaminants associated with 
the breakdown of TCE were also found at elevated levels. The Risk 
Assessment determined that the contaminant levels would present a risk 
to groundwater, and a cleanup standard of 131 [mu]g/kg for TCE in soil 
was determined to protect groundwater. An area comprising roughly 
18,000 cubic feet of soil on the east side of the Property was 
determined to require treatment. The OU1 Feasibility Study considered 
alternatives for remediation of the VOC-contaminated soil including No 
Action, Containment with Cap, Vapor Extraction, Low Temperature Thermal 
Desorption, Soil Washing/Biotreatment, Excavation and Off-site 
Disposal, and In-Place Processing with Hot Air Injection.

Selected Remedy (OU1)

    The Property was one of four properties addressed in the 1995 
Record of Decision (ROD) for OU1. The OU1 Remedial Action Objective was 
to prevent further contamination of groundwater from contaminated 
soils. The selected alternative was in-place processing using hot air 
injection, with excavation and off-site disposal as a back-up. During 
the Remedial Design, it was determined that hot air injection would not 
achieve the performance standards of the OU1 ROD, and the backup remedy 
of excavation and off-site disposal was used to meet performance 
standards. Approximately 861 cubic yards of contaminated soil were 
removed from the Property as part of the OU1 remedial action and 
disposed of in a Resource Conservation and Recovery Act (RCRA) 
permitted landfill facility in Model City, New York. EPA approved the 
OU1 remedial action report for the Property in 2001.

Operable Unit 2 (OU2)

    OU2 consists of soils investigations at certain enforcement-lead 
properties. The Property (including the Administrative Parcel to be 
deleted from the NPL) is not included in OU2.

Remedial Investigation and Feasibility Study (OU3)

    Groundwater contamination was investigated as part of the RI/FS for 
OU3. Groundwater contamination at the Property is focused primarily in 
the southwestern portion of the Property. The OU3 RI/FS found 
contamination from VOCs at unacceptable levels in monitoring wells and 
a former production well (TA-1) on the Property. Contamination in well 
TA-1 was found at concentrations up to 7,740 [mu]g/L of TCE, and the 
Property was included in the OU3 Feasibility Study to evaluate 
alternatives for treatment of the groundwater. The OU3 Feasibility 
Study considered several alternatives involving extraction of 
contaminated groundwater using differing treatment technologies and 
differing discharge points.

Selected Remedy (OU3)

    The Property was included in the OU3 ROD in 2000, which called for 
construction of groundwater extraction and treatment systems at several 
properties, including the Property, included in the Site to remediate 
the contaminated groundwater. The goal of the groundwater extraction 
and treatment systems is to restore the aquifer to beneficial use as a 
potable use aquifer. The major components of the selected remedy in the 
OU3 ROD include the following:
     Completion of a groundwater remedial design study to 
determine the most efficient design of a groundwater extraction and 
treatment system.
     Installation, operation, and maintenance of on-site 
groundwater extraction wells to remove contaminated groundwater from 
beneath the Site and to prevent contaminants from migrating off-site.
     Installation, operation, and maintenance of air stripping 
treatment at on-site groundwater extraction wells to treat groundwater 
to required cleanup levels.
     Construction, operation, and maintenance of a pipeline 
from the on-site groundwater treatment systems to the nearest surface 
water body or storm drain leading to a surface water body.

[[Page 94265]]

     Periodic sampling of groundwater and treated water to 
ensure treatment components are effective and groundwater remediation 
is progressing towards the cleanup levels.
    During the Remedial Design of the groundwater extraction and 
treatment system at the Property, EPA conducted a pump test on the 
extraction well at the Property. The well failed to produce an adequate 
yield of contaminated water to treat to significantly improve 
groundwater quality. As a result, EPA conducted additional testing to 
determine if adding a vapor extraction unit to the treatment system at 
the Property would increase contaminant removal and improve the 
performance of the OU3 selected remedy at the Property. Based on those 
results, EPA issued an Explanation of Significant Differences (ESD) on 
September 16, 2009, requiring implementation of a modified remedy at 
the Property which includes vapor extraction to enhance the performance 
of the remedy selected in the OU3 ROD. Testing also indicated that 
significant cost savings could be achieved by replacing the air 
stripper at the Property with a vessel containing granular activated 
carbon (GAC). Therefore, the ESD further allowed EPA to modify the OU3 
remedy at the Property to allow for this form of treatment. The 
treatment system at the Property was built, and determined to be 
operational and functional in 2012. EPA plans on transferring the 
groundwater treatment system at the Property to PADEP for Operation and 
Maintenance (O&M) in 2022.

Response Actions

    During the Remedial Design of the OU1 remedy to address 
contaminated soils at the Property, it was determined that the 
alternative selected in the OU1 ROD would not achieve the performance 
standards of the ROD; therefore, the backup remedy of excavation and 
off-site disposal was used to meet the performance standards. 
Approximately 861 cubic yards of contaminated soil were removed from 
the Property as part of the OU1 remedial action. EPA approved the OU1 
remedial action report for the Property in 2001. No further actions to 
remediate the soil at the Property have been required.
    During the Remedial Design of the OU3 remedy to address 
contaminated groundwater at the Property, it was determined that the 
alternative selected in the OU3 ROD would not treat enough contaminated 
water at the Property to significantly improve groundwater quality. As 
a result, EPA issued the ESD to require a modified remedy at the 
Property which includes vapor extraction and allows for the replacement 
of the air stripper with a vessel containing GAC to enhance the 
performance of the remedy selected in the OU3 ROD. EPA built the 
treatment system at the Property, and determined that it was 
operational and functional in 2012. EPA continues to operate and 
maintain the groundwater treatment system at the Property.

Cleanup Levels

    In the OU1 ROD, EPA selected a soil cleanup level of 131 [mu]g/kg 
of trichloroethylene (TCE) to be protective of groundwater. To expedite 
backfilling of excavated areas at the Property, EPA conducted Quality 
Control sampling prior to excavation to delineate the extent of 
contamination, and eliminate the need to keep excavation areas open 
while additional sampling and analysis were being performed to 
determine if the performance standard (cleanup level) for soil in the 
OU1 ROD had been met. Thirty samples were collected at the Property and 
sent for analysis. The performance standard was exceeded at one 
location; therefore, additional samples were collected further out. As 
a result of the sampling, the boundary of excavation was extended out 
five feet to comply with the OU1 performance standard. After the 
excavation and off-site disposal of soils was completed, EPA certified 
the OU1 Remedial Action at the Property to be complete.
    The OU3 remedy to address contaminated groundwater called for 
restoration of the aquifer to beneficial use as a potable use aquifer. 
The OU3 ROD set the groundwater cleanup level as the EPA Maximum 
Contaminant Level (MCL). The MCL for TCE is 5 ug/L. There are currently 
ten monitoring wells on or near the Property: ROG-1S, ROG-1D, ROG-2S, 
ROG-2I, ROG-3S, ROG-3I, ROG-4S, ROG-4I, ROG-5, and ROG-6, in addition 
to the extraction well TA-1. Currently, only two of the monitoring 
wells at the Property, ROG-3S and ROG-4S, show contamination above the 
MCL. Most monitoring wells at the Property have shown downward trends 
in contamination since the OU3 remedy was implemented. The monitoring 
wells located in the Administrative Parcel (ROG-1S, ROG1D, ROG-2S, and 
ROG-2I) have never exhibited contaminant concentrations in excess of 
the performance standard (cleanup level) for groundwater in the OU3 ROD 
and are considered to be upgradient from the current contaminated 
groundwater plume.

Operation and Maintenance (O&M)

    There are no O&M requirements and no institutional controls for OU1 
at the Property. For OU3, EPA plans on transferring the groundwater 
treatment system at the Property to PADEP for O&M in 2022. There are no 
institutional controls for OU3 at the Property. The monitoring wells on 
the Administrative Parcel will continue to be sampled.

Five-Year Review

    The selected remedial actions, upon completion, will not leave 
hazardous substances, pollutants, or contaminants on site above levels 
that allow for unlimited use and unrestricted exposure; however, the 
OU3 remedial action will require more than five years to complete. As a 
result, EPA will perform Five Year Reviews at the Site pursuant to 
Section 121(c) of CERCLA, 42 U.S.C. 9621(c), until the cleanup levels 
for groundwater in the OU3 ROD are achieved, allowing for unlimited use 
and unrestricted exposure. Five Year Reviews will be triggered by the 
date that construction is completed at the entire Site.

Additional Investigations

    The owner of the Property performed additional investigations at 
the Property subsequent to EPA's investigations. In 2005, fifty soil 
borings were advanced throughout the Property. A soil sample was 
collected from each soil boring and analyzed for VOC contamination. No 
soil samples exceeded EPA's performance standards (cleanup levels) for 
soil in the OU1 ROD. Nine composite samples were also collected and 
analyzed for semi-volatile organic compounds (SVOCs), polychlorinated 
biphenyls (PCBs), pesticides, metals, and cyanide. SVOCs, PCBs, 
pesticides, and cyanide were not detected at elevated levels in these 
samples; however, arsenic was detected in three samples at levels that 
exceeded background and EPA Regional Screening Levels (RSLs). In 2006, 
the owner of the Property conducted additional sampling in the vicinity 
of the samples where the elevated levels of arsenic were found. 
Eighteen additional soil borings were advanced, and two soil samples 
were collected from each boring. Elevated levels of arsenic were 
detected in two soil borings. EPA conducted a more rigorous evaluation 
of the risks associated with the arsenic levels and determined that the 
risks associated with the concentrations are within EPA's acceptable 
risk range.
    The owner of the Property also conducted sampling to evaluate the 
planned construction of a stormwater

[[Page 94266]]

basin on the Lansdale Borough electrical substation property located 
within the boundaries of the Property. Twelve test pits were excavated, 
two of which are located within the Administrative Parcel. The test 
pits were analyzed for VOCs, and a composite sample was analyzed for 
SVOCs, pesticides, PCBs, metals, and cyanide. No VOCs were detected at 
levels above EPA's performance standards (cleanup levels) for soil in 
the OU1 ROD. SVOCs, PCBs, metals, and cyanide were not detected at 
elevated levels.
    The owner of the Property conducted additional sampling in 2016 on 
an approximately 3,000 cubic yard pile of top soil to be used as ground 
cover for the residential development. Twelve samples were collected 
from the pile and analyzed for metals. One sample was analyzed for 
hexavalent chromium. Metals concentrations were all found to be within 
EPA's acceptable risk range.

Community Involvement

    Public participation activities have been satisfied as required in 
CERCLA section 113(k), 42 U.S.C. 9613(k), and CERCLA section 117, 42 
U.S.C. 9617. Documents in the deletion docket on which EPA relied for 
recommendation of the deletion of the Administrative Parcel from the 
NPL are available to the public in the information repositories. The 
locations of the information repositories are set forth at the end of 
the Addresses section at the beginning of this notice.

Determination That the Criteria for Deletion Have Been Met

    EPA has determined based on the investigations conducted that all 
appropriate response actions under CERCLA have been implemented at the 
Administrative Parcel. The remedial action for OU1 removed contaminated 
soil from the Administrative Parcel. The implemented OU1 remedy for 
soils has achieved performance standards specified in the OU1 ROD at 
the Administrative Parcel. The four monitoring wells (ROG1S, ROG1D, 
ROG2S, and ROG2I) that are located within the Administrative Parcel 
have not shown significant detections of contaminants. These wells are 
also considered upgradient from the current contaminated groundwater 
plume. The implemented OU3 remedy for groundwater has achieved 
performance standards specified in the OU3 ROD at the Administrative 
Parcel and will continue to extract and treat contaminated groundwater 
at other portions of the Property. The selected remedial action 
objectives and associated cleanup levels for OU1 and OU3 at the 
Administrative Parcel are consistent with agency policy and guidance 
and have been achieved at the Administrative Parcel. No further 
Superfund response action for the Administrative Parcel is needed to 
protect human health and the environment. Other procedures for deletion 
required by 40 CFR 300.425(e) are detailed in Section III of this 
direct Final Notice of Partial Deletion of a portion of the Site.

V. Partial Deletion Action

    The EPA, with concurrence of the Commonwealth of Pennsylvania, 
through the PADEP, has determined that all appropriate response actions 
under CERCLA, other than five-year reviews and monitoring, have been 
completed for the Administrative Parcel. Therefore, EPA is deleting the 
Administrative Parcel portion of the North Penn Area 6 Superfund Site 
from the NPL.
    Because EPA considers this action noncontroversial and routine, EPA 
is taking it without prior publication. This action will be effective 
February 21, 2017 unless EPA receives adverse comments by January 23, 
2017. If adverse comments are received within the 30-day public comment 
period, EPA will publish a timely withdrawal of this direct final 
notice of partial deletion before the effective date of the partial 
deletion, and it will not take effect. EPA will prepare a response to 
comments and continue with the deletion process, as appropriate, on the 
basis of the notice of intent to partially delete and the comments 
already received. There will be no additional opportunity to comment.

List of Subjects in 40 CFR Part 300

    Environmental protection, Air pollution control, Chemicals, 
Hazardous waste, Hazardous substances, Intergovernmental relations, 
Penalties, Reporting and recordkeeping requirements, Superfund, Water 
pollution control, Water supply.

    Dated: December 5, 2016.
Cecil Rodrigues,
Acting Regional Administrator, Region III.

    For the reasons set out in this document, 40 CFR part 300 is 
amended as follows:

PART 300--NATIONAL OIL AND HAZARDOUS SUBSTANCES POLLUTION 
CONTINGENCY PLAN

0
1. The authority citation for part 300 continues to read as follows:

    Authority:  33 U.S.C. 1321(c)(2); 42 U.S.C. 9601-9657; E.O. 
12777, 56 FR 54757, 3 CFR, 1991 Comp., p. 351; E.O. 12580, 52 FR 
2923, 3 CFR 1987 Comp., p. 193.

0
2. Table 1 of appendix B to part 300 is amended by revising the PA 
entry for ``North Penn-Area 6'', ``Lansdale'' to read as follows:

Appendix B to Part 300--[Amended]

                                       Table 1--General Superfund Section
----------------------------------------------------------------------------------------------------------------
                 State                            Site name                   City/County           Notes (a)
----------------------------------------------------------------------------------------------------------------
 
                                                  * * * * * * *
PA....................................  North Penn-Area 6............  Lansdale................               P
 
                                                  * * * * * * *
----------------------------------------------------------------------------------------------------------------
(a) = Based on issuance of health advisory by Agency for Toxic Substances and Disease Registry (if scored, HRS
  score need not be greater than or equal to 28.50).
S = State top priority (included among the 100 top priority sites regardless of score).
P = Sites with partial deletion(s).

[FR Doc. 2016-31032 Filed 12-22-16; 8:45 am]
 BILLING CODE 6560-50-P