WQ0000020_Asheville Structural Fill Project Area 4 Phase 1 and 1A Plan Review Only_20100930

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NCDENR
North Carolina Department of Environment and Natural Resources
Beverly Eaves Perdue
Governor
Alan Meadwell
Senior Environmental Technical Specialist
Environmental Services
Progress Energy Carolinas, Inc.
410 S. Wilmington Street, PEB 4A
Raleigh, NC 27601
Dear Mr. Meadwell:
Division of Water Quality
Coleen H. Sullins Dee Freeman
Director iSecretary
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AQUIFER PROTECTION
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Subject: Asheville Structural Fill Project
Area 4 Phase 1 and SA Plan Review Only
Progress Energy Ash Distribution Program
,6Rrmit No. WQ0000020 =*
Buncombe County
On September 14, 2010, the Division of Water Quality's, Asheville Office received Progress Energy's plans for
application of ash structural fill at the Asheville Airport in accordance with your permit (WQ0000020) and 15A NCAC 02T
.1200. Specifically, the plans are for structural fill to be located in area 4 and include phases 1 and IA.
Based upon our review of the materials submitted, the Division is requiring the following additional information
necessary to process the application:
1. According to 15A NCAC 02T .1204 (d), information shall be provided to the Division of Water Quality that
describes and explains site-specific engineering or institutional controls proposed to prevent adverse impacts to
public health and the environment. Submit a project narrative that includes a general overview, timeline, footprint
(acreage) and estimated ash volume by project phase, environmental impact statement, groundwater monitoring
plan for both the interim and post -construction periods, and describe how the integrity of the structural fill/liner
will be maintained during airport expansion and ultimately as an airport runway;
2. To demonstrate compliance with Permit Condition IVA.a.ii., property Ownership Documentation of the site where
the CCPs are to be used shall be provided to the Division. This documentation shall consist of: legal
documentation of ownership or an easements meeting the requirements of 15A NCAC 02L .0107 (f) as required
by permit.;
3. Submit a list of project personnel and their contact information;
4. The general notes of the plans state to 'refer to technical specifications for the materials and construction
requirements including the construction quality assurance (QA) and control program testing requirements".
Please submit a copy of this document to the Aquifer Protection Section (APS);
5. Upon project completion, please submit a complete copy of the post construction QA documentation;
6. Based on the plans, there doesn't appear to be a drainage layer between the compacted soil layer and compacted
Fly ash (closure cap section). Please describe why such a layer would not be necessary. Additionally, please
provide a brief description of the cover (that top most, exposed layer above compacted soil fill) that will be used
both temporarily and long-term including drainage patterns;
7. The Division recommends that in lieu of a leachate pipe that penetrates the liner (at the boot), a vertical
sump/pump system (traditional subtitle D style leachate collection system) be used to collect structural fill
leachate;
AQUIFER PROTECTION SECTION —Asheville Regional Otrtoe (ARO)
2090 U.S. 70 Highway, Swannanoa, NC 287788211
Phone: 828-29&45001 FAX: [phone]
One
Customer Service: 1-877-6238748
NorthCarolina
Internet www.ncwateroualitv.oro
11 .. _ i/_ .
An Equal Opportunity 1 Affirmative Action Employer

Progress Energy/Asheville Airport
Page 2/2
September 24, 2010
8. According to 15A NCAC 2T .0200, a pump and haul permit (industrial wastewater) will be required for collection
and disposal of wastewater from the lechate system;
9. Please notify the Division when the leachate collection system can be inspected;
10. Please submit all currently available data (e.g., water levels) from onsite wells or piezometers. This information
will be used to verify the seasonal high water table as shown on the plan;
11. The two 1,500 gallon grit chambers appear to only be associated with phase 1A based on the plans submitted;
please describe the method of leachate collection/storage during Phase 1 construction. Also, please provide
information describing how the leachate storage volume was calculated and how the storage tanks will be
maintained to prevent overfilling;
12. The Division will require a onetime analysis of the leachate as each phase nears completion. A list of analytes is
given below. All analytical results will be submitted to this office;
13. Please identify all water supply wells within a 1500 foot radius of the project site through a door-to-door survey.
This should include the residence (655 Old Fanning Bridge Road) near Westfield Road and the utility building
located directly across Bolston Highway (SR 280/191), which is owned by the Warrior Golf Management LLC;
14. The Division believes the interim phase wells (PMW-1, 2, 3 and 4) are necessary to install and monitor given the
potential longevity of the complete (phase 1, IA and 2) installation. All monitoring wells should be developed to
bedrock refusal (transition zone) and have an adequate supply of water for sampling. In order to avoid
suspended sediments, all monitoring wells should be properly developed prior to sampling. Surface water
monitoring sites will be established at the confluence of two ephemeral streams draining the project area;
15. Ground and surface water monitoring is to begin following completion of Phase 1. Wells and streams are to be
sampled within 6 months of phase I completion with analytical results submitted to this office. Data collected at
each monitoring site should include the following field parameters and analytes: arsenic, barium, boron,
cadmium, chloride, chromium, copper, fluoride, lead, manganese, mercury, nickel, nitrate, nitrite, pH, selenium,
silver, specific conductivity, sulfate, temperature, total dissolved solids (TDS), total suspended solids (TSS), total
organic carbon, water level, and zinc;
16. Soil assessment is necessary prior to disturbing any material in the [phase 2] shooting range area. If prior soil
assessment for lead has been performed, please submit this information to APS;
17. The landowner where the ash is applied and compliance boundary established shall within 90 days of completion
of phase 1, comply with 15A NCAC 2L .0107(f); and,
18. Updated construction plans and a project meeting will be required before the start of phase 2 construction.
The above -referenced information is to be submitted prior to placing any ash. If you should have any questions,
please do not hesitate to contact me directly at 828.296.4680 or Brett Laverty at 828-296-4681.
Sincerely,
G. Landon Davidson, LG
Regional Supervisor Aquifer Protection Section
cc: )on Risgaard - APS ND CO
Director — Asheville Airport
AQUIFER PROTECTION SECTION —Asheville Regional Office (ARO)
2090 U.S. 70 Highway, Swannanoa, NC 28778-8211
Phone: [phone] FAX: [phone]
Customer Service: 1877-623-6748
Internet www.nowateroualRy.org
An Equal Opportunity 1 AitirmaWe Action Em*ff
NorthCarolina
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