4125_INSP_20180219

FACILITY COMPLIANCE INSPECTION REPORT
Division of Waste Management
Solid Waste Section

Page 1 of 3

UNIT TYPE:
Lined
MSWLF LCID YW Transfer Compost X SLAS COUNTY: Guilford
Closed
MSWLF HHW White
goods Incin T&P FIRM PERMIT NO.: 41-25
CDLF Tire T&P / Collection Tire Monofill Industrial Landfill DEMO SDTF FILE TYPE: COMPLIANCE

Date of Site Inspection: February 19, 2018 Date of Last Inspection: March 17, 2017

FACILITY NAME AND ADDRESS:
Guilford College Compost Facility - Small Type III SWC Facility
5800 West Friendly Avenue
Greensboro, NC 27410

GPS COORDINATES:
N: 36.09679 W: -79.88873

FACILITY CONTACT NAME AND PHONE NUMBER:
David H. Petree, Director of Environmental Sustainability - Guilford College
w. 336-316-2402
c. 336-451-6638
f. 336-316-2954
[e-mail]

FACILITY CONTACT ADDRESS:
Guilford College
David Petree, Director of Environmental Sustainability
5800 West Friendly Avenue
Greensboro, NC 27410

PARTICIPANTS:
John Patrone, Environmental Senior Specialist - Solid Waste Section (SWS)
David H. Petree, Director of Environmental Sustainability - Guilford College

STATUS OF PERMIT:
Permit To Operate (PTO) issued June 6, 2013
PTO expiration date June 6, 2018

PURPOSE OF SITE VISIT:
Comprehensive Inspection

STATUS OF PAST NOTED VIOLATIONS:
None

OBSERVED VIOLATIONS:
None

FACILITY COMPLIANCE INSPECTION REPORT
Division of Waste Management
Solid Waste Section

Page 2 of 3

ADDITIONAL COMMENTS
On February 19, 2018, John Patrone met with David Petree to conduct a comprehensive inspection of the Guilford College
Compost Facility - Small Type III Solid Waste Compost Facility on West Friendly Avenue in Greensboro, Guilford
County.

1. The facility is a Small Type III Solid Waste Compost (SWC) Facility. It produces compost from post-consumer
food wastes, wood chips, leaves, and sawdust.
2. The facility is in operation Monday through Friday 7:00 am to 4:00 pm.
3. The facility permit, site plan, and operations plan were discussed.
4. The facility is not open to the public and is operated by Mr. Petree/Guilford College staff and select students.
5. All feedstocks are generated at Guilford College.
6. The compost produced is used at Guilford College on the farm (greenhouse and garden areas) and on campus
grounds.
7. The facility uses two in-vessel compost units known as earth tubs, A and B.
8. Each earth tub contains about 3,000 lbs of food waste, 385 lbs of leaves, 120 lbs of wood chips, and 112 lbs of
sawdust.
9. The earth tubs are piped to a 125-gallon buried leachate storage tank. Mr. Petree stated that leachate from the
tank is pumped via transfer pump into an adjacent municipal sewer stormwater drain.
10. The City of Greensboro – North Carolina has authorized the disposal of leachate from the Guilford College small
type III SWC facility to the sanitary sewer. The SWS has accepted the authorization (see file copy letter dated
April 18, 2016 and response email dated April 21, 2016).
11. To achieve process to further reduce pathogens (PFRP), temperature in the earth tubs is required to be > 131° F
for three days. To meet vector attraction reduction (VAR), temperature in the earth tubs is required to be
maintained for an additional 11 days at > 104° F with the average temperature > 113° F.
12. Material remains in the earth tubs for at least 14 days, meeting both PFRP and VAR requirements.
13. Compost removed from the earth tubs is combined into windrows. Two or three tubs of material are incorporated
into a windrow.
14. Mr. Petree stated that when a windrow is constructed about 1,000 lbs of wood chips and 45 yd3 of leaves are
mixed-in with the compost from the earth tubs.
15. Leaves are collected from the grounds at Guilford College and stockpiled and maintained for incorporation into
the windrows.
16. When available, sawdust is also used in the compost windrow process. Mr. Petree stated that the sawdust is
generated from sawmill operations conducted at Guilford College.
17. Mr. Petree stated that a windrow is maintained for four to six months, turned two or three times during that period.
18. Temperature in the windrows is required to be maintained for three days > 131° F due to the addition of leaves.
19. The facility maintains earth tub and windrow temperature records. Temperature records were observed for March
15, 2017 through January 11, 2018.
20. During the inspection, there was one inactive earth tub, one active earth tub, and five small windrows.
21. The earth tubs contained Batch 70 – not active, adding waste materials and Batch 71 – active, 10th day > 131° F.
22. The facility maintains records of the quantity and type of material received. The amount of material received
from July 1, 2017 through February 16, 2018 is 59,793 lbs or 29.89 tons.
23. The facility maintains records of the quantity and type of material removed. The amount of compost removed
from July 1, 2017 through February 16, 2018 is 45,504 lbs or 22.75 tons.
The item(s) listed above were observed by Section staff and require action on behalf of the facility in order to come into or maintain compliance
with the Statutes, Rules, and/or other regulatory requirements applicable to this facility. Be advised that pursuant to N.C.G.S. 130A-22, an
administrative penalty of up to $15,000 per day may be assessed for each violation of the Solid Waste Laws, Regulations, Conditions of a Permit,
or Order under Article 9 of Chapter 130A of the N.C. General Statutes. Further, the facility and/or all responsible parties may also be subject to
enforcement actions including penalties, injunction from operation of a solid waste management facility or a solid waste collection service and any
such further relief as may be necessary to achieve compliance with the North Carolina Solid Waste Management Act and Rules.
FACILITY COMPLIANCE INSPECTION REPORT
Division of Waste Management
Solid Waste Section

Page 3 of 3

24. The facility annual report (FAR) dated August 1, 2017 was received by the SWS. Material received for July 2016
through June 2017 is 43.38 tons. The amount of compost created is 43.53 tons, the amount used on site is 21.91
tons, and the amount stockpiled on site is 21.62 tons.
25. Compost analysis records were observed for March 1, 2017, July 26, 2017 and January 19, 2018. The North
Carolina Department of Agriculture & Consumer Services – Agronomic Services Division analyzed the required
metals concentrations, Research & Analytical Laboratories, Inc. analyzed fecal coliform, and manmade inerts
were analyzed by the facility (03/17/17, 07/31/17, and 02/19/18). The compost analysis records indicate
compliance with 15A NCAC 13B .1400, “Solid Waste Compost Facilities” rules.
26. Compost analysis records for the concentration of metals, fecal coliform, and manmade inerts are required to be
conducted every 20,000 tons of compost produced or every six months, whichever comes first.
27. Mr. Petree stated that the compost temperature probe is calibrated.
28. The facility has a small scale available for use. Mr. Petree stated that the weight of materials used in the compost
process is known from experience and that container size remains constant.
29. There was no odor detected at the facility boundary.
30. Ponding of stormwater was not observed.
31. Fire lanes are maintained.
32. Access roads are of all-weather construction.
33. The facility has signage.
34. The PTO expiration date is June 6, 2018.
35. The PTO renewal application needs to be submitted to the SWS. Contact Ming-Tai Chao, Environmental
Engineer – SWS, at 919-707-8251 for further discussion.

Please contact me if you have any questions or concerns regarding this inspection report.

Phone: [phone]

John Patrone
Environmental Senior Specialist
Regional Representative

Sent on: February 22, 2018 X Email Hand delivery US Mail Certified No. [ _]

Copies: Deb Aja, Western District Supervisor – SWS
Ming-Tai Chao, Environmental Engineer – SWS