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Copy of DIA Environmental Conference

Stormwater Discharges Associated with Non-Extractive Industries General Permit
by

Maura McGovern

on 1 October 2013

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Transcript of Copy of DIA Environmental Conference

General Permit COR900000
Stormwater Discharges Associated with Non-Extractive Industrial Activity

Improved consistency of permit requirements
What Are The Drivers Behind The Change?
COR900000

Part III Sector Specific Requirements for Industrial Activity

Permit Structure


October 3, 2013
Maura McGovern
303-692-3392
maura.mcgovern@state.co.us
SWANA
October 3, 2013

Colorado Department of Public Health and Environment
Water Quality Control Division
Environmental outcome/ protect water quality
Division observations during compliance inspections
Review of sampling data provided by industrial sectors required to conduct annual sampling
Almost 20 years since last comprehensive review of industrial stormwater permits
Part I Requirements applicable to all Industrial Sectors
Part II Standard Terms and Conditions
1990 EPA Issued Stormwater Regulations
Regulates Stormwater discharges from three potential sources
MS4s
construction activities
industrial activities
11 Categories of industry regulated
Uses SIC or narrative description
Defined as "any BMP or other method (including effluent limitation) used to prevent or reduce the discharge of pollutants to waters of the state"

Must be selected, designed, installed, implemented, and maintained in accordance with good engineering hydrologic and pollution control practices

Term "minimize" introduced

Installation and implementation specifications required for each control measure

Must be maintained in operating condition
Control Measures
Practice-based
Minimize exposure, good housekeeping etc
Numeric
Based on industrial category
Benchmark and Effluent Limitation Guideline
Water Quality
Impaired waters with or without an approved TMDL
Effluent Limitations
Facility Inventory and Assessment

Facility activity, equipment, and materials that contribute or have a potential to contribute pollutants to stormwater
Can be a narrative or tabulation
Description of control measures
Inspection procedures and documentation
Monitoring procedures and documentation
Corrective Action documentation
SWMP
Inspections
General Monitoring Requirements
Monitoring required on a storm event that results in an actual discharge from a facility
Monitoring is a grab sample
Collect grab sample in the first 30 minutes of the discharge or soon as practicable
Sampling must be performed in accordance with 40 CFR Part 136 methods
General Monitoring
Requirements
Report data gathered on a quarterly basis
Routine Reporting
Send DMR to the Division on the 28th day of the following month of the proceeding quarter
If there is no measurable storm event report " no discharge" on form
Ability to submit DMR electronically through NET DMR
Goal to have 90% of permittee's submitting electronically by 2014
Resources
www.colorado waterpermits.com
Permit
Fact Sheet
Response to Comments
Q and A document
Modification Application
SWMP Guidance Document
Discharge Monitoring Report Guidance
EPA Guidance on Monitoring and Sampling
Youtube sampling videos
Thank You

4 times per year (i.e. once per quarter)
1 inspection during a runoff event
Conduct the inspections 20 days apart
Inspection Scope
Inspection documentation (in a report or checklist)
Inactive and unstaffed sites that meet condition of no exposure can do 2 annual inspections (spring/ fall)
Five types of monitoring may apply
Applicable monitoring requirements apply to each authorized outfall
Samples and measurements must be representative of monitored discharge
Substantially identical outfalls
Summarize monitoring results for each quarter on approved Discharge Monitoring Reports (DMR) form sent to permittee by Division
Annual Report for 1/1-12/1 due to the Division by 3/31 of the following year
Stormwater Regulation Background
NPDES
Permits
Landfills
Colorado's Master General NPDES permit for surface water discharges

Renewal Master General Replaces 3 Stormwater Discharge Permits
Light, Heavy, Recycling
Full transcript