Appendix 1202. Asphalt, concrete and aggregate processing facilities.

A.

Applicability—Facilities engaged in the processing of aggregates used in the production, demolition or recycling of asphalt and/or concrete products shall be subject to the following conditions.

1.

Hours of Operation—Hours of operation shall be governed by the Horry County Noise Ordinance.

2.

Separation from Residential.

(a)

All proposed batch production facilities shall be located a minimum of five hundred (500) feet from any residentially used or zoned lot, whether said lot is located within the unincorporated county or a municipal jurisdiction. The distance shall be measured from the parcel line of the proposed site to the residential zoning line or residentially used lot line. The separation distance shall be reduced to three hundred (300) feet if the facility is separated from the residential by an active railroad right-of-way or highway with at least two hundred fifty (250) feet of right-of-way.

(b)

All proposed outdoor aggregate processing (i.e., crushing, sorting and recycling) facilities are required to be separated by one thousand (1,000) feet from any residentially used or zoned lot, whether said lot is located within the unincorporated county or a municipal jurisdiction. The distance shall be measured from the parcel line of the proposed site to the residential zoning line or residentially used lot line. The separation distance shall be reduced to five hundred (500) feet if the facility is separated from the residential by an active railroad right-of-way or highway with at least two hundred fifty (250) feet of right-of-way.

3.

Minimum Lot Area—2.5 acres.

4.

Minimum setbacks—Mixing, batching, crushing and processing equipment shall be a minimum of fifty (50) feet from all property lines. Setbacks may be greater if required by the zoning district in which the facility is being constructed. Setbacks for all other buildings or uses on the property are required to meet the minimums for that zoning district.

5.

All asphalt and concrete batch plants under this section shall be located in fully enclosed structures. Aggregate processing (i.e., crushing, sorting and recycling) facilities are not required to be fully enclosed as long as they meet all other requirements of this ordinance.

6.

All internal vehicle use areas shall be maintained in a dust free condition. All aggregate processing facilities must submit a dust control plan prior to receiving approval.

7.

Landscaping/Buffering.

(a)

Roadway Screening.

i.

The site shall be screened from adjacent roadways to a minimum height of ten (10) feet. This can be accomplished from any combination of walls, berms and/or vegetation whether planted or existing. If screening is composed solely of vegetation the buffer width from the roadway must be a minimum of twenty-five (25) feet and no less than eighty (80) percent opacity in the winter season. Buffers shall contain landscape materials equal to twice that of the standard supplemental planting requirements of § 527. If the screen contains walls and/or berms a minimum of ten (10) feet in height or the roadway only services adjacent industrial uses then the site only has to meet the landscaping requirements of § 527.

(b)

Side and rear property lines. All side and rear property lines must be screened according to the requirements of § 527, unless subject to (c) below.

(c)

Enhanced buffers. Asphalt and concrete batch facilities within one thousand (1,000) feet of a residentially used or zoned property shall be screened through enhanced buffers. The enhanced buffer shall be around the entire work area with openings provided for approved entrances. The site should be designed so that structures and or walls are designed to provide interior site screening in front of the openings provided for access.

The enhanced buffer shall consist of one of the following options:

i.

Buffer one hundred (100) feet in width with twice the landscaping material as required by the supplemental planting in buffer areas. Existing vegetation may be supplemented using a combination of evergreen trees and shrubs to reach eighty (80) percent winter season opacity within three (3) years; or

ii.

A ten-foot wall, berm or combination in addition to the landscape buffer requirements of § 527.

8.

Truck Routes.

(a)

All such facilities shall submit to the County for approval a map showing a pre-designated route for all transport trucks traveling north, east, south, and west between the facility and the nearest arterial/collector street. The intent of this section is to control the route between the nearest arterial/collector street and the facility, taking into consideration that the routes may be different depending on the travel direction.

(b)

The route maps shall restrict to the greatest extent possible the routing of transport trucks so as to minimize routes that traverse residential neighborhoods, that unreasonably and adversely impact residential dwelling units, or that damage or degrade public streets from repetitive heavy weights or the spillage of materials from transport trucks. No facility operations shall commence until the county has approved the truck route map as conforming to the requirements of this section. Once the route map is approved by the county, all transport trucks shall travel the approved routes as shown on the route map unless a temporary diversion is necessary to avoid emergency or hazardous conditions along the approved route. The owner or operator shall promptly contact the county in the event of any circumstance necessitating a diversion from the route map.

9.

Maintenance of Public Streets.

(a)

Facilities shall employ measures to limit the tracking, carrying, or depositing of aggregates, fillers, dirt, dust, mud, sludge, or other materials associated with the facility upon any public street or thoroughfare.

(b)

All transport trucks and equipment leaving a facility shall be completely rinsed of asphalt, concrete, aggregates, fillers, dirt, dust, mud, sludge, or other facility materials prior to leaving the site.

(c)

All facilities shall provide paved aprons from any paved public or private right-of-ways onto the site for a distance of at least one hundred (100) feet.

(d)

If, on paved public roadways, there are visible tracks or deposits of aggregates, fillers, dirt, dust, mud, sludge, or an other material associate with the operation of a concrete or asphalt facility along the travel path of vehicles exiting the facility site, all such paved public road(s) shall be swept by the owner or operator at least once each day of operation or more often as reasonably required by the county to remedy and remove the tracking and deposit. All sweeping shall be done by a commercial grade mechanical, vacuum or regenerative air sweeper that uses water for controlling dust. The owner or operator shall keep a daily written log of sweeping activities. The log shall be kept for one month.

(e)

If accessing off an unpaved road the facility operator will be required to maintain said road to Horry County standards. This will involve, at a minimum, the provision of a water truck and motor grader for all plant locations.

10.

Stormwater.

(a)

All sites regardless of size will be required to obtain a Horry County stormwater permit.

(b)

All liquid residues resulting from the cleaning of transport trucks and equipment shall be directed to impervious process holding basins approved by the county.

i.

Basins shall be designed to hydraulically separate from the stormwater detention/water quality control facilities.

ii.

All liquids from such basins shall be either recycled through the facility or discharged to the sanitary sewer system.

iii.

All residual material from the basins shall be collected and disposed of or recycled, in accordance with applicable laws and regulations.

iv.

After issuance of approval by the county, records evidencing proper disposition of residue materials must be maintained on site.

v.

The stormwater detention pond and liquid and the holding basins may be combined into a single facility where it can be demonstrated that the facility will meet the discharge and water quality requirements.

(Ord. No. 61-11, § 4, 9-20-11; Ord. No. 27-16, § 1, 6-7-16)