Stormwater General Permits

sadhospitalMécanique

22 févr. 2014 (il y a 3 années et 6 mois)

75 vue(s)

SOLI D WASTE FACI LI TY OPERATOR
TRAI NI NG

Stormwater General Permits

John Bailey, P.E.

Permits Branch Manager

Water Division

Stormwater


Stormwater can pick up debris, chemicals, dirt, and
other pollutants
and flow into a storm sewer system or
directly
to a
lake, stream, river, wetland, or coastal
water. Anything
that enters
a storm sewer system is
discharged untreated
into the water bodies
we use for
swimming, fishing, and
providing drinking
water.

Stormwater Permits


General Permit
vs

Individual
Permit


Individual Permits


Case by Case


General


Similar Activities


General Permits


Industrial Stormwater General
Permit (IGP) ARR000000


Sanitary Landfill General Permit
ARG160000

NPDES Industrial Stormwater
General Permit ARR000000

Twin Oaks Landfill in Anderson, Texas

What does an Industrial Stormwater Permit
ARR000000 cover?


Stormwater discharges
associated with an
industrial activity as
defined in 40 CFR
122.26(b)(14)(
i
)


(xi)
are required to obtain
coverage under the
Industrial Stormwater
General Permit
ARR000000.


Landfills 40 CFR
122.26(b)(14)(v)

Stormwater outfall in
Milwaukee

What does an Industrial Stormwater Permit
ARR000000 cover
? (cont’d)


Activities Exposed to Stormwater
(40 CFR 122.26 (b)(14)


Equipment
maintenance


Storage


Haul Roads


Etc.

Required Documents for Coverage under
ARR000000 Permit


Notice
of Intent (NOI);


Site map
indicating the
location of the facility,
stormwater controls,
and
outfalls
;


Stormwater Pollution
Prevention Plan;


$200 Permit fee
as required
by Reg. 9.404.


What is a Stormwater Pollution Prevention Plan
(SWPPP)?


Describes the facility and its operations


Identifies potential sources of stormwater pollution
at the facility


Specifies appropriate Best Management Practices or
pollution control measures to reduce the discharge of
pollutants in stormwater runoff


Permit Requirements


Parameter Benchmark
Monitoring


Quarterly Visual Inspections


Investigate the Site


Document Findings


Annual Report (January 31
st
)

Parameter Benchmark Monitoring
Requirements

Industrial Sector and Additional Monitoring (If Applicable)

Sector
Code

SIC Code
or Acitvity
Code

Activity Represented

Effluent
Characteristics

Parameter
Benchmark
Value

L1

LF

All Landfill, Land Application Sites and Open Dumps





L2

LF

All Landfill, Land Application Sites and Open Dumps, except
Municipal Solid Waste Landfill (MSWLF) Areas Closed in
Accordance with 40 CFR 258.60(Industrial Activity Code “LF”)

Total Iron

1.0 mg/L



Parameter Benchmark Value

Effluent Characteristics

Concentration



(mg/l, unless



otherwise specified)



Maximum



Minimum

Maximum

pH

6.0 s.u.

9.0 s.u.

Chemical Oxygen Demand (COD)

120

Total Suspended Solids (TSS)


100

Oil & Grease

15

All facilities are required to monitor for the

above
effluent characteristics, other
effluent characteristics
, which are based on
Industrial
Sectors as defined below,
may require monitoring.

Monitoring Period


Period:


January 1
-

December 31 of a
calendar year.


Monitoring
Frequency:


At least twice within the
monitoring period.


Sampling
Timeframes:


One sample must be taken in each
of the following time frames:


January
-
June


July
-
December


No Exposure


Industrial facilities may qualify for an exclusion from
storm water permitting if the operator can certify
that there is “no exposure” to storm water of
industrial materials or activities.


If the facility operator can certify that a condition of
no exposure exists, he/she must complete a no
exposure certification form and send it to ADEQ.


No exposure must be re
-
certified by the facility
operator every 5 years from the anniversary date of
when the form was first submitted.


Sanitary Landfills General
Permit ARG160000

Coal Ash Disposal Landfill in
Perry
County
,
Alabama


The
permit
provides coverage for
discharges of uncontaminated
stormwater runoff which has
been collected in an approved
sedimentation pond at Sanitary
Landfills (Class I, III, and IV).


Facilities are
authorized to
discharge
this uncontaminated
stormwater to
Waters
of the
State of Arkansas subject to the
terms of
the
permit
.

What does a General Permit for Sanitary
Landfills ARG160000 cover?

Authorization


For uncontaminated stormwater from inactive areas
that commingle with closed portions.


Sedimentation Pond designed for 25 year 24 hour (approx. 7
inches);


State Construction Permit; and


Pond Dewatered as soon as possible.



Leachate is specifically prohibited from entering the
sedimentation pond(s). [Individual Permit]

Permit Monitoring Requirements


Discharge greater than 25 year 24 hour?


Burden of proof is on permittee


Sample taken during first 30 minutes of Discharge.

Effluent Characteristics



Discharge
Limitations



Monitoring Requirements

Concentration mg/l

(unless otherwise
specified)

Frequency

Sample Type

Daily
Maximum

Flow

Report

Once/discharge

Instantaneous

Chemical Oxygen Demand (COD)

75

Once/discharge

Grab

Total Suspended Solids (TSS)

100

Once/discharge

Grab

Oil and Grease (O & G)

15

Once/discharge

Grab

pH

6.0 s.u.
-

9.0 s.u.

Once/discharge

Grab

Required Documents for Coverage under
ARG160000 Permit


Notice
of Intent (NOI);


State
construction permit
number and a statement that
the facility was constructed in
accordance with the plans and
specifications approved by the
Department, if necessary;


Topographic
map indicating
the location of the facility,
treatment areas, and outfalls;


Disclosure
Form as required by
Reg. 8.204, and;


$200 Permit fee
as required by
Reg. 9.404.