3301_EdgecombeCoLF_April2024LeachateAssmtResultsRPTAppr_FID1899210_20241003

October 3rd, 2024

Sent via email – [e-mail]

Ms. Gloria Moseley
Solid Waste Director
201 Andrew Street
Tarboro, NC 27886

RE: Sampling Plan Results
Edgecombe County CDLF
Permit 3301-CDLF-1997
Edgecombe County
FID 1899210

Dear Ms. Moseley:

The Solid Waste Section (Section) has reviewed the Sampling Plan Results report (FID 1899201)
submitted on behalf of Edgecombe County by Smith + Gardner, Inc. (S+G). The sampling was
conducted in accordance with the plan (FID 1834092) approved by the Section on April 14th ,2024.
During a February 27th, 2024, compliance inspection, wet areas/seeps were observed near the
southwest corner of the facility, western waste boundary, and north of the leachate containment
berm, so an assessment was necessary to determine potential impact.

S+G collected two discrete water samples (LL-1 and LL-2) from the southwestern corner and
western slope of the landfill where the seeps were observed. S+G also collected a surface
water sample (SW-1) at the confluence of the unnamed tributary running north from the
leachate containment berm and Jerry’s Creek. The samples were analyzed for 40 CFR 258
Appendix I constituents, 1,4-dioxane, total phosphorus, sulfate, nitrate, and ph.

Volatile organic compounds (VOCs) were not reported above 2L Standards in samples LL-1 and
LL-2, but antimony (LL-2), arsenic (LL-2), chromium (LL-2), and cobalt (LL-1 and LL-2)
concentrations exceeded the 2L Standards. There were no VOC nor inorganic constituent

concentrations detected greater than the 2B Standards in the SW-1 surface water sample. S+G
recommends no further action related to the seeps observed on February 27th, 2024 due to the
absence of VOC 2B and 2L Standard exceedances in the water samples, in addition to the
presence of the four inorganic constituents in the upgradient monitoring well (MW-3B) at
similar concentrations relative to the water samples. S+G also cited the presence of those four
inorganic constituents in native soils.

The Section approves S+G’s recommendation and additional assessment related to the
February 27th , 2024 seep observation is not required at this time. Please contact me at 919-
707-8288 or [e-mail] if you have any questions or concerns regarding this
correspondence. Thank you in advance for your cooperation in this matter.

Sincerely,

Ervin Lane
Hydrogeologist
Solid Waste Section

Cc: Perry Sugg, P.G. – SWS Environmental Compliance Branch Head
Drew Hammonds – SWS Field Operations Branch Head
Autumn Romanski – SWS Environmental Senior Specialist
Seth Rickets, P.G. – Smith + Gardner, Inc.
Joan Smyth, P.G. – Smith + Gardner, Inc.