HomeMy WebLinkAboutNCS000426_Hickory EPA Audit App B_20181213Appendix B
Photograph Log
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MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 1 of 27
Photograph 1. MS4 Outfall at 632 4th Street Northwest. View, facing east, of the corrugated metal pipe
outfall along the west bank of a tributary to Cripple Creek. The City identified this outfall as having a
potential illicit discharge due to a noticed odor on an unspecified date between 2009 and 2010.
Photograph 2. MS4 Outfall at 632 4th Street Northwest. Additional view, facing west, of the corrugated
metal pipe outfall along the west bank of a tributary to Cripple Creek shown in Photograph 1. The City
identified this outfall as having a potential illicit discharge due to a noticed odor on an unspecified date
between 2009 and 2010.
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 2 of 27
Photograph 3. MS4 Outfall at 632 4th Street Northwest. View, facing west, of a stormwater drainage
ditch and catch basin, which drain to the MS4 outfall shown in Photographs 1 and 2.
Photograph 4. MS4 Outfall at 632 4th Street Northwest. View of the sanitary sewer line path and
manhole near the MS4 outfall and tributary of Cripple Creek. The sanitary sewer line in close proximity
to the MS4 outfall may explain the noticed odor between 2009 and 2010.
Direction of
stormwater flow
Path of sanitary
sewer line
Tributary to Cripple Creek
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 3 of 27
Photograph 5. MS4 Outfall at 701 1st Street Northwest (YMCA). View of the metal pipe outfall
equipped with damaged PVC elbow on the south bank of Cripple Creek. The City identified that this
outfall had a potential illicit discharge due to observed flow on an unspecified date between 2009 and
2010.
Photograph 6. MS4 Outfall at 701 1st Street Northwest (YMCA). View, facing east, of Cripple Creek
upstream of the MS4 outfall. Note there were multiple outfalls present along the north and south banks
upstream and downstream of the MS4 outfall in question.
Upstream outfall
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 4 of 27
Photograph 7. MS4 Outfall at 701 1st Street Northwest (YMCA). View of intermittent discharge flow
observed at the MS4 outfall. The inspection team determined that the outfall is connected to a sump pump
in the YMCA building, which pumps groundwater collected in the French drain surrounding the property.
Photograph 8. Detention Pond at 256 10th Avenue NE. View, facing west, of the detention pond.
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 5 of 27
Photograph 9. Detention Pond at 256 10th Avenue NE. View, facing northeast, of the splitter structure
made of plastic piping placed at the east end of the pond. The inspection team was unable to determine
whether the splitter structure was in the design plans.
Photograph 10. Detention Pond at 256 10th Avenue NE. View, facing west, of the flow path from the
splitter structure along the south side of the detention pond.
Splitter Structure
Flow Direction
Flow Direction
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 6 of 27
Photograph 11. Detention Pond at 256 10th Avenue NE. View, facing north, of the outfall structure at the
west end of the detention pond. The outfall structure discharges back to the City’s MS4 infrastructure.
Photograph 12. Detention Pond at 256 10th Avenue NE. View, facing east, of the preferential flow path
along the south side of the detention pond. There was also mature vegetation in the detention pond
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 7 of 27
Photograph 13. Stanford Park Detention Pond. View, facing east, of the detention pond.
Photograph 14. Stanford Park Detention Pond. View of drainage area east of the detention pond,
surrounding parking lots, the Stanford Skate Park, and the Highland Recreation Center building.
Parking Lots
Highland Recreation
Center Stanford Skate Park
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 8 of 27
Photograph 15. Stanford Park Detention Pond. View, facing northwest, of the discharge point from
detention pond, which drains northwest towards the unnamed tributary of Falling Creek.
Photograph 16. Stanford Park Detention Pond. View of the outfall structure and nearby small pile at the
west end of the detention pond. The inspection team could not identify the purpose of the pile or whether
it was part of the pond’s original design.
Direction of
stormwater flow
Discharge Point
Outfall Structure
Mound
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 9 of 27
Photograph 17. Stanford Park Detention Pond. View, facing east, of the emergency spillway at the west
end of the detention pond.
Photograph 18. Stanford Park Detention Pond. View, facing north, of the discharge point from the
emergency spillway towards the unnamed tributary of Falling Creek northwest of the detention pond.
Emergency Spillway
Direction of
stormwater flow
Direction of
stormwater flow
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 10 of 27
Photograph 19. City of Hickory Fire Station No. 5. View of fire department representatives using a fire
hose to clear snow, salt, and debris from the fire station driveway. The water flow was directed towards
the stormwater drain at the southeast corner of the parking lot, which is pictured in Photograph 20.
Photograph 20. City of Hickory Fire Station No. 5. View, facing southwest, of the stormwater drain
located at the southeast corner of the fire station driveway and parking lot.
Stormwater Drain
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 11 of 27
Photograph 21. City of Hickory Fire Station No. 5. View of grit at the discharge point from the
stormwater drain pictured in Photograph 20. The discharge point was along the slope directly south of the
driveway and parking lot area.
Photograph 22. City of Hickory Fire Station No. 5. View of unnamed tributary of Clark Creek.
Direction of
stormwater flow
Discharge Point
Tributary of Clark
Creek
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 12 of 27
Photograph 23. City of Hickory Fire Station No. 5. View of the used oil catch basin along the floor of
the eastern maintenance garage. A pump system directs collected oil to the indoor storage tanks pictured
in Photograph 24.
Photograph 24. City of Hickory Fire Station No. 5. View of the used oil indoor storage tanks in the
eastern maintenance garage.
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 13 of 27
Photograph 25. City of Hickory Fire Station No. 5. View of the power washer stored in the eastern
maintenance garage. Facility representatives indicated that fire department vehicles are typically washed
outdoors at the facility using the pressure washer and degreaser pictured in Photograph 26.
Photograph 26. City of Hickory Fire Station No. 5. View of the degreaser stored in the eastern
maintenance garage. Facility representatives indicated that the fire department vehicles are typically
washed outdoors at the facility using the pressure washer pictured in Photograph 25 and degreaser.
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 14 of 27
Photograph 27. City of Hickory Fire Station No. 5. View, facing east, of barrels stored along the south
side of the eastern maintenance garage. The inspection team could not determine whether the barrels were
filled or empty. The labels for each of the three barrels are pictured in Photographs 28, 29, and 30.
Photograph 28. City of Hickory Fire Station No. 5. View of a label on the black barrel pictured in
Photograph 27 indicating the barrel contained or once contained “Hurst Blue Rescue Tool Hydraulic
Fluid.”
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 15 of 27
Photograph 29. City of Hickory Fire Station No. 5. View of the label for the blue barrel pictured in
Photograph 27 indicating the barrel contained or once contained “400 LE SAE 15W-40” oil.
Photograph 30. City of Hickory Fire Station No. 5. View of a label on the gray barrel pictured in
Photograph 27 indicating the barrel contained or once contained synthetic oil.
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 16 of 27
Photograph 31. City of Hickory Fire Station No. 5. View, facing south, of petroleum product stains and
the proximity of the stains to the stormwater drain pictured in Photograph 20.
Photograph 32. City of Hickory Fire Station No. 5. Close up view of the petroleum product stains
observed on the impervious surface outside of the eastern maintenance garage, as pictured in
Photograph 31.
Petroleum Stains
Petroleum Stains
Discharge Point
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 17 of 27
Photograph 33. City of Hickory Fire Station No. 5. View of a sheen on top of stormwater collected in the
southeast portion of the facility, directly east of the eastern maintenance garage.
Photograph 34. City of Hickory Fire Station No. 5. View, facing south, of an opening in the curb of the
parking lot at the southeast corner of the facility allowing the discharge of the stormwater collected in
Photograph 33 down the slope directly south of the facility.
Sheen
Direction of
stormwater flow
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 18 of 27
Photograph 35. City of Hickory Fire Station No. 5. View, facing south, of the discharge point pictured in
Photograph 34 along the southern portion of the facility. It was unclear whether the stormwater discharges
from the facility infiltrated or flowed to the unnamed tributary of Clark Creek.
Photograph 36. City of Hickory Fire Station No. 5. View of a catch basin in the southwest corner of the
facility in the foreground and the detention pond in the background. The channel in the snow provided
evidence of stormwater flow bypassing the catch basin and entering directly into the detention pond.
Direction of
stormwater flow
Catch Basin
Discharge Point
Unnamed tributary of
Clark Creek
Detention Pond
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 19 of 27
Photograph 37. City of Hickory Fire Station No. 5. View, facing north, of the detention pond at the
bottom of the slope directly south of the facility, as pictured in Photograph 36. The inspection team was
unable to determine the pond’s purpose.
Photograph 38. City of Hickory Fire Station No. 5. View of the detention pond pictured in Photograph
37 and an unnamed tributary of Clark Creek directly south of the facility. It was unclear whether the
stormwater discharges from the facility infiltrated or flowed to the unnamed tributary of Clark Creek.
Unnamed tributary of
Clark Creek
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 20 of 27
Photograph 39. City of Hickory Public Works Facility. View of used oil storage tanks on the west side
of the main fleet garage. The tanks do not have secondary containment and are not double-walled.
Photograph 40. City of Hickory Public Works Facility. View, facing west, of the indoor truck wash in
the southwest corner of the facility.
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 21 of 27
Photograph 41. City of Hickory Public Works Facility. View, facing west, of an uncovered dumpster
adjacent to the truck wash pictured in Photograph 40 in the southwest corner of the facility.
Photograph 42. City of Hickory Public Works Facility. View, facing northwest, of multiple dumpsters
(one uncovered) in the northern portion of the facility.
Uncovered Dumpster
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 22 of 27
Photograph 43. City of Hickory Public Works Facility. View of an uncovered dumpster in the northern
portion of the facility. The dumpster is over flowing.
Photograph 44. City of Hickory Public Works Facility. View, facing east, of a trailer equipped with a
spray barrel parked in the southeast corner of the facility. City representatives indicated the spray barrel is
used for pesticide application.
Spray Barrel Trailer
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 23 of 27
Photograph 45. City of Hickory Public Works Facility. View, facing south, of the outdoor truck wash
pad in the northeast corner of the facility.
Photograph 46. City of Hickory Public Works Facility. View of the sediment collection area adjacent to
the outdoor truck wash pad pictured in Photograph 45.
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 24 of 27
Photograph 47. City of Hickory Public Works Facility. View of the detention pond adjacent to the truck
wash pad and sediment collection area pictured in Photographs 44 and 45.
Photograph 48. City of Hickory Public Works Facility. View, facing south, of the salt and equipment
storage building split between the southern parking lot and the northern equipment storage area. There
was salt along the uncovered driveway.
Salt Stockpile
Spilled Salt
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 25 of 27
Photograph 49. City of Hickory Public Works Facility. View, facing southwest, of the detention pond in
the northwest corner of the facility. The detention pond collects the majority of stormwater runoff from
the northern equipment storage area.
Photograph 50. City of Hickory Public Works Facility. View, facing north, of evidence of erosion and
sediment transport from uncovered sediment stockpiles in the northern equipment storage area. The
stormwater in this area flows towards the detention pond pictured in Photograph 49.
Direction of
stormwater flow
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 26 of 27
Photograph 51. City of Hickory Public Works Facility. View, facing east, of evidence of erosion and
sediment transport from the uncovered sediment stockpiles across the unstabilized access road towards
the detention pond pictured in Photograph 49.
Photograph 52. City of Hickory Public Works Facility. View of the stormwater discharge point in the
northwest corner of the facility. Stormwater from catch basins in the southern parking lot area and from
the two detention ponds in the northern equipment storage area discharge through this point. The
inspection team noticed an odor from the opening in the structure that was not typical of stormwater.
Direction of
stormwater flow
MS4 Inspection Report
Hickory, NC: NPDES Permit No. NCS000426
Inspection Date: December 12, 2018 Appendix B, Page 27 of 27
Photograph 53. City of Hickory Public Works Facility. View inside the stormwater discharge point
structure pictured in Photograph 52. The inspection team noticed an odor from the opening in the
structure that was not typical of stormwater.