Local Weather

Inspections



A Pre-construction Meeting

The Pre-construction Meeting is not an onsite inspection but is a critical part of the inspection process. A Pre-construction Meeting will be held with the engineer, general contractor and developer to discuss the project, phases of the county's inspection process, and answer any questions the principle parties may have. This Pre-construction meeting is not to be mistaken with your Pre-construction meeting required by DHEC for subcontractors, involving the SWPPP documentation.

     

Overall Inspection Process

All subdivision inspection requests must be made to the Horry County Engineering Plans Expeditor. This can be accomplished by phone (843) 915-6936 or by online request formFor a copy of a 11 x 17 flow chart of the key inspections by both Engineering Department and Storm Water Departments click here.

Inspections will be required after each phase of construction and the site will have to meet the minimum requirements of the SCDOT Standard Specifications, The Land Developement Regulations and the Storm Water Management requirements. Each phase of construction must be approved before the next inspection will be performed. Once the inspection is performed an inspection report will be generated by the Project Manager and sent to the Plans Expeditor. A copy of the inspection report will be faxed or emailed to the engineering firm by the Plans Expeditor. 

Initial Erosion Control Inspection

Inspect the placement of;

  • Construction entrances
  • Silt fence 
  • Any other items required prior to construction activity.
  • Check SWPPP Report

Inspector reserves the right to add any item not aforementioned to ensure completeness and project compliance to governing authorities.

Trench And Pipe Inspections 

Leaving a trench open over night is prohibited. Therefore if an inspector can not make it to an open trench or pipe inspection request within the day requested the Engineer of record may certify the proper installation and return a copy of that inspection report to the county.   

Items to be inspected are;    

  • Trench to be clean and without debris and trash.
  • Bedding in place up to 1/3 the depth of the pipe min.
  • Pipe joints joined and sealed with conseal if reinforced concrete pipe or fully inserted into bell if double wall plastic pipe.
  • Pipes joints wrapped with non-woven fabric 1 ft beyond either side of the joint.
  • Top of pipe buried a depth required under manufacturer specification
  • Pipe buried with select fill compacted in 6" lifts to the surface grade.
  • Some means for sediment control at ends of trench.
  • Pipe fully sealed inside and outside of catch basin.
  • No pipe is allowed in the top 6" of a catch basin.
  • If catch basin is set the accomodation of a 12" sump in the bottom of the basin is required.
  • Must have steps in all boxes over 4.5 feet in depth.
  • Re-inforcement bands intact in the walls of the basin if the basin has web walls.
  • If brick is used to construct a box or adjust the top to grade the bricks must be concrete.
  • If pipe enters corner of the basin the box must be a solid reinforced and engineered catch basin.
  • Align boxes to ensure they are not under the road.
  • Check SWPPP Report

Inspector reserves the right to add any item not aforementioned to ensure completeness and project compliance to governing authorities.

Preliminary Road Drainage

Note : Drainage Preliminary As-built plan must be submitted and approved before a subgrade inspection will be scheduled and performed.

  • Correct location of drainage structures, size and length of pipe if needed.
  • Alignment of boxes, pipe sealed inside of boxes.
  • Maximum run of pipe is 400ft.
  • Check pipe cover in roadway.
  • Must have a 1ft sump.
  • Catch basins exceeding 4 feet must have stairs. 
  • Check SWPPP Report

Inspector reserves the right to add any item not aforementioned to ensure completeness and project compliance to governing authorities. 

Routine Inspections

A routine inspection will done anytime during the construction process to ensure compliance with the sediment and control plan. No prior notification is required by the inspector. The inspector reserves the right to require additional sediment and erosion controls if current BMPs are not adequate to hold sediment on site.

Overall Drainage System

  • Inspect underdrains if plans call for placement in the road bed.
  • Check outfall pipes and outlet structures.
  • Check condition of existing outfall ditches for positive flow.
  • Check location of ponds and proper slope.
  • Erosion control items, pond stabilization.
  • Utilities and encroachments within the drainage easement.
  • Back of lot drainage.
  • Check for minimum 2ft opening inside CB.
  • Check SWPPP Report

Inspector reserves the right to add any item not aforementioned to ensure completeness and project compliance to governing authorities.

Final Inspection

Note : A Final As-built must be submitted before a Final Inspection will be performed. A Final Inspection will not be given an approval status until the following items have been submitted and approved:

  • Punch list items must be approved.
  • Road / Drainage As-built is approved.
  • Water and Sewer As-built is approved.
  • Dedication package complete with warranty bond. (bonding not necessary if commercial property but full stabilization is required)

All subdivision final inspections must be routed through the Horry County Engineering Plan Expeditor.  Final inspections and re-inspections generally will be performed by both Engineering and Stormwater departments on Wednesdays and Fridays. A punch list will be sent to the Engineer of record by the Plans Expeditor.    

Inspection items may include but not limited to:

  • Pond signs installed
  • Back of lot drainage
  • Inlet protection in good condition
  • Site stabilized to a 70% stand of grass as required by DHEC standards ( 70% stand of grass within a 2’x2’ box placed anywhere on site.)
  • Perimeter ditch sloped to a min 3:1 slope an properly stabilized
  • No berms located over a drainage pipe.
  • Filter fabric under all rip rap
  • Pond sloped to a min 3:1 slope and stabilized
  • Control structures clean, clear and of design dimensions
  • All structures and drainage within easements sealed and free of silt
  • All catch basin frame and grates supported under its vertical frame.
  • All easement clean, clear, stabilized and free of encroachments
  • All drainage complaints resolved for the area  
  • Check SWPPP Report

Inspector reserves the right to add any item not aforementioned to ensure completeness and project compliance to governing authorities.    

Warranty Inspection

 If a subdivision is to be dedicated to the county to be incorporated in the county maintenance system, there will be a 3 year warranty applied to the subdivision. A warranty inspection will be conducted on the anniversary of the approved final inspection on each year. If during the warranty period a punch list item is exposed, that punch list item is expected to be resolved within that warranty period.   

The Inspection.           

  • Pond slopes stabilized.
  • Drainage structures sealed and cleaned out.
  • R/W clean and clear.
  • Swales graded as per plans and have a 70% grass survivability.
  • R/W and disturbed areas have a 70% grass survivability.

    Inspector reserves the right to add any item not aforementioned to ensure completeness and project compliance to governing authorities.

Final Certificate of Occupancy Inspection

Note : A Final As-built must be submitted before a Final CO Inspection will be performed by the Storm Water Dept. A Final CO Inspection from code enforcement will not be approved before a Final CO inspection from Storm Water Dept. has been approved. A Final CO Inspection from the Storm Water Dept will not be given an approval status until the following items have been submitted and approved:

  • Punch list of inspection items must be approved.
  • As-built is approved. 

All Final CO Inspections must be routed through the Horry County Engineering Plan Expeditor. A punch list will be sent to the Engineer of record by the Plans Expeditor.    

Inspection items may include but not limited to:

  • Inlet protection in good condition
  • Site stabilized to a 70% stand of grass as required by DHEC standards ( 70% stand of grass within a 2’x2’ box placed anywhere on site.)
  • Perimeter ditches sloped to a min 3:1 slope and properly stabilized if applicable
  • No berms or large landscaping items located over a drainage pipe.
  • Filter fabric under all rip rap
  • Pond sloped to a min 3:1 slope and stabilized
  • Control structures clean, clear and of design dimensions
  • All structures and drainage within easements sealed and free of silt
  • All catch basin frame and grates supported under its vertical frame.
  • All easement clean, clear, stabilized and free of encroachments
  • All drainage complaints resolved for the area  
  • Check SWPPP Report

Inspector reserves the right to add any item not aforementioned to ensure completeness and project compliance to governing authorities.