WI0500421_Staff Report_20110913

Buyerly Eaves
(ion ernor
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Nc DENTI
North Carolina Department of Environment and Natural Resources
Division of Water Quality
Perdue C'oleen II. Sullins Dee Freeman
Director Secretary
September 13, 2011
Memorandum
To: Thomas Slusser
Groundwater Protection Unit, Central Office
From: Eric Rice 4
Aquifer Protection Section, Raleigh Regional Office
Through: Jay Zimmerman, Regional Supervisor S
Aquifer Protection Section, Raleigh Regional Office
Subject: UIC (5I) Permit
GSK Facility; SWIM-13
3025 E. Cornwallis Road
Durham, N.C.-Durham County
Permit # WI0500421
Enclosed is the regional staff report regarding the submittal of a permit application for the
injection of a sand slurry in comjunction with the construtction of soil vapor extraction (SVE)
wells. The injection and subsequent construction of SVE wells is to remediate the presence of
chlorinated solvent plume in the groundwater. Please contact me at [phone] if you have
any questions about the inspection.
cc: file
Attachment: APRSR form
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RECEIVED / DENR / DWQ
Aquifer Protection Section
SEP 15 2011
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AQUIFER PROTECTION REGIONAL STAFF REPORT
I. GENERAL INFORMATION
1. This application is (check all that apply): ® New ❑ Renewal
D Minor Modification ❑ Major Modification
Date: September 13, 2011 County: Durham
To: Aquifer Protection Central Office Permittee: GlaxoSmithKline
Central Office Reviewer: Thomas Slusser Project Name: GSK Facility; SWMU-13
Regional Office Inspector: Eric Rice (RRO) #WI0500421
RECEIVED / DENR / DWQ
Aquifer Protection Section
SEP 15 2011
El Surface Irrigation ❑ Reuse El Recycle ❑ High Rate Infiltration El Evaporation/Infiltration Lagoon
El Land Application of Residuals
❑ Distribution of Residuals
El Attachment B included
❑ Surface Disposal
❑ 503 regulated ❑ 503 exempt
❑ Closed -loop Groundwater Remediation Other Injection Wells (including in situ remediation)
Was a site visit conducted in order to prepare this report? ® Yes or El No.
a. Date of site visit: September 8, 2011
b. Person contacted and contact information: Lindsey Walata (GSK)
c. Site visit conducted by: E. Rice
d. Inspection Report Attached: El Yes or ® No.
2. Is the following information entered into the BIMS record for this application correct?
❑ Yes or ® No. If no, please complete the following or indicate that it is correct on the current application.
For Treatment Facilities:
a. Location:
b. Driving Directions:
c. USGS Quadrangle Map name and number:
d. Latitude: Longitude:
e. Regulated Activities / Type of Wastes (e.g., subdivision, food processing, municipal wastewater):
For Disposal and Infection Sites:
(If multiple sites either indicate which sites the information applies to, copy and paste a new section into the
document for each site. or attach additional pages for each site)
a. Location(s): Research Triangle Park
b. Driving Directions: 147 North to Cornwallis, right on Cornwallis, right at stoplight
c. USGS Quadrangle Map name and number:
d. Latitude: 35 55 13 Longitude: 78 51 54
IV. INJECTION WELL PERMIT APPLICATIONS (Complete these two sections for all systems that use injection
wells, including closed -loop groundwater remediation effluent injection wells, in situ remediation injection wells, and heat
pump injection wells.)
FORM: Glaxo WI0500421.doc 1

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AQUIFER PROTECTION REGIONAL STAFF REPORT
Description Of We11(S) And Facilities — New, Renewal, And Modification
1. Type of injection system:
❑ Heating/cooling water return flow (5A7)
❑ Closed -loop heat pump system (5QM/5QW)
❑ In situ remediation (51)
❑ Closed -loop groundwater remediation effluent injection (5L/"Non-Discharge")
Other (Specify: 5Z )
2. Does system use same well for water source and injection? ❑ Yes ® No
3. Are there any potential pollution sources that may affect injection? ❑ Yes ® No
What is/are the pollution source(s)? What is the distance of the injection well(s) from the
pollution source(s)?
4. What is the minimum distance of proposed injection wells from the property boundary? 300 Feet
5. Quality of drainage at site: ® Good ❑ Adequate ❑ Poor
6. Flooding potential of site: ® Low ❑ Moderate ❑ High
7. For groundwater remediation systems, is the proposed and/or existing groundwater monitoring program
(number of wells, frequency of monitoring, monitoring parameters, etc.) adequate? ❑ Yes ❑ No. Attach
map of existing monitoring well network if applicable. If No, explain and recommend any changes to the
groundwater monitoring program: N/A
8. Does the map presented represent the actual site (property lines, wells, surface drainage)? ® Yes or ❑ No. If
no or no map, please attach a sketch of the site. Show property boundaries, buildings, wells, potential pollution
sources, roads, approximate scale, and north arrow.
V. EVALUATION AND RECOMMENDATIONS
1. Provide any additional narrative regarding your review of the application: Site is located in the Triassic Basin.
Permit is regarding the installation of eleven soil vapor extraction (SVE) wells to induce the volatilization of
VOC's which are present due to waste disposal in the form of a solid waste management unit cell. The wells
are expected to be installed at no more than fifteen feet in depth. The unit has been excavated in the past and a
liner installed. The horizon down to bedrock is reported to be a fill material. A sand slurry will be injection into
the open borehole prior to the SVE wells construction. Wells will be screened across the injection zones. The
sand slurry will consist of a mixture of guar, borax or a cellouse enzyme. Injection will be done at one or two
depths per SVE location. Sand slurry is expected to be injected at a rate of fifteen gallons per minute at a
pressure range of between 100 to 125 psi. Estimates total of twenty five hundred (2500) gallons per day of sand
slurry will be injected. Because the wells will be utilized as SVE, all injection activities are indicated to be
conducted above the water table. A radius of influence of twenty five feet is expected based on the previous
event at the facility. Recommendations: 1. Require estimates of total injection volumes 2. Based on the
FORM: Glaxo WI0500421.doc 2

AQUIFER PROTECTION REGIONAL STAFF REPORT
response for #1, include a cap on total injection volumes in the permit 3. Recommend central office review if
all injection components have been approved by appropriate officials 4. Figure 4 of the report shows two
diagrams for the typical SVE well construction. One of the two diagrams depicts a lateral injection line. Given
that injection wells are indicated to be vertical construction, it is not clear how this lateral line fits into the
overall construction of the system. Request confirmation of this item.
Attach Well Construction Data Sheet - if needed information is available
2. Do you foresee any problems with issuance/renewal of this permit? 0 Yes
briefly.
3. List any items that you would like APS Central Office to obtain through an additional information request.
Make sure that you provide a reason for each item:
® No. If yes, please explain
Item
Reason
Item #1,3, and 4 above
Necessary
4. List specific Permit conditions that you recommend to be removed from the permit when issued. Make sure
that you provide a reason for each condition:
Condition
Reason
5. List specific special conditions or compliance schedules that you recommend to be included in the permit when
issued. Make sure that you provide a reason for each special condition:
Condition
Reason
6. Recommendation: ❑ Hold, pending receipt and review of additional information by regional office; ❑ Hold,
pending review of draft permit by regional office or CO; ® Issue upon receipt of needed additional
information; ❑ Issue; ❑ Deny. If deny, please state reasons:
FORM: Glaxo WI0500421.doc 3

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AQUIFER PROTECTION REGIONAL STAFF REPORT
7. Signature of report preparer(s): _
Signature of APS regional supervisor:
Date:
Attachments:
FORM: Glaxo WI0500421.doc 4