WITH COMPLETE SOLUTIONS VERIFIED
1972 clean water act Administered by the US environmental protection
agency (EPA) Created the NPDES
1987 Amendment to CWA CALLED WATER QUALITY ACT
NPDES in south South Carolina is NPDES delegated state.
carolina
NPDES regulations are SCDHEC
administered by
CGP authorizes stormwater discharges from construction sites
Who must obtain land disturbing activities greater than or equal to 1 acre
NPDES coverage -land disturbance less than 1 ac within 1/2 miles of water
body in SC costal zone
NPDES permits are operator-person or company for a particular discharge
issued to
primary permittee -has day to day operational control to ensure
compliance with SWPP
-typically the owner or developer
,primary permittee submit NOI, Preparation of the C_SWPPP
responsibilites
Secondary permittee individual lot owner or residential builder that conducts
land disturbing activity
limited to an individual lot or group of lots as part of
approved LCP of development
contractors must on Contractor Certification- D-0437
On-Site SWPPP SCDHEC CGP, NOI, NPDES coverage approval
letter, Contractor Certifications, Local
Approvals, USACE approvals, Critical area
permit(coast)
OS_SWPPP a copy of signed and certified SWPPP, NOI, and
CGP coverage letter from DHEC must be
retained at site or electronically accessible
minor modification to minor modifications made directly in the
ON-SWPPP field,do not need approval by DHEC- additional
BMP's, removal of disturbed areas
major modifications to must be made by qualified individual and
OS-SWPPP submitted to DHEC or appropriate delegated
entity for approval
include a phased stormwater management
Phased plan plan which identifies all BMP's and grading
, requirement > 5 work conducted during a specific portion of
the sites construction sequence. Each
phase identified on at least one separate
plan sheet.
Phased plan at least two separate plan phases are required
requirement < 10 but - initial land disturbance phase - stabilization
> 5 acres phase
Phased plan at least 3 separate plan phases are required -
requirement ≥ 10 initial land disturbance phase - construction
acres phase - stabilization phase
1. areas of site disturbed by construction
activity and areas used for storage of
All compliance materials exposed to precipitation
inspection must 2. stormwater conveyance systems for evidence of
include invesg. of, at a sediment
minimum of 5 of the 3. BMP's identified in OS-SWPPP
following 4. Discharge location to investigate if sediment
leaving site, or if such locations are
inaccessible, nearby downstream location
if possible.
5. Where vehicles enter or exit site for evidence of off-
site sediment tracking.