AZPDES and Construction Sites AZPDES and Construction Sites

Greg WiseGreg WiseEnvironmental Program SpecialistEnvironmental Program Specialist

Arizona Department of Environmental QualityArizona Department of Environmental Quality (602) 771-2227(602) 771-2227

gw2@azdeq.gov

AZPDES and AZPDES and Construction SitesConstruction Sites

Top 10 Top 10 ProblemsProblems

#1 – No Permit Coverage#1 – No Permit Coverage

Who qualifies for coverage Who qualifies for coverage under the 2008 Construction under the 2008 Construction

General Permit?General Permit?

Who qualifies for coverage Who qualifies for coverage under the 2008 Construction under the 2008 Construction

General Permit?General Permit?

YOUYOU do if you are an operator of a do if you are an operator of a construction site and 1 or more construction site and 1 or more

acres of land is disturbedacres of land is disturbed

Who qualifies for coverage Who qualifies for coverage under the 2008 Construction under the 2008 Construction

General Permit?General Permit?

……or if your project is part of a or if your project is part of a common plan of development or common plan of development or sale that will ultimately disturb an sale that will ultimately disturb an

acre or moreacre or more

Permit WaiversPermit Waivers

The project must disturb less than 5 acres, The project must disturb less than 5 acres, The project cannot be located within 0.25 The project cannot be located within 0.25 miles of an impaired or outstanding miles of an impaired or outstanding Arizona water; and Arizona water; and The project must have an "R" (or erosivity) The project must have an "R" (or erosivity) value of less than 5 as calculated by the value of less than 5 as calculated by the Smart NOI system. Smart NOI system.

Who is considered an “operator”?Who is considered an “operator”?

A person who has control over the A person who has control over the construction plans and specifications construction plans and specifications and/orand/or

A person who has day to day control of the A person who has day to day control of the sitesite

How do you apply for How do you apply for coverage?coverage?

Accurately Complete an NOIAccurately Complete an NOIhttp://www.az.gov/webapp/noi/main.do

#2 – Inadequate SWPPPs#2 – Inadequate SWPPPs

Storm Water Pollution Prevention Storm Water Pollution Prevention PlanPlan

Storm Water Pollution Prevention Storm Water Pollution Prevention PlanPlan

Is a site-specific, written document that Is a site-specific, written document that identifies potential sources of storm water identifies potential sources of storm water pollutionpollution

Storm Water Pollution Prevention Storm Water Pollution Prevention PlanPlan

Is a site-specific, written document that Is a site-specific, written document that identifies potential sources of storm water identifies potential sources of storm water pollutionpollution

Describes practices to reduce pollutants in Describes practices to reduce pollutants in storm water discharges from the sitestorm water discharges from the site

Storm Water Pollution Prevention Storm Water Pollution Prevention PlanPlan

Is a site-specific, written document that Is a site-specific, written document that identifies potential sources of storm water identifies potential sources of storm water pollutionpollution

Describes practices to reduce pollutants in Describes practices to reduce pollutants in storm water discharges from the sitestorm water discharges from the site

Identifies the procedures the operator will Identifies the procedures the operator will implement to comply with the permitimplement to comply with the permit

When it doubt, read the permit!When it doubt, read the permit!

Part III explains what Part III explains what needs to be included needs to be included in your SWPPPin your SWPPP

2008 CGP SWPPP Checklist2008 CGP SWPPP Checklist

ADEQ has created a ADEQ has created a SWPPP checklist to SWPPP checklist to assist youassist you

Go to Go to azdeq.gov azdeq.gov and and at search bar type in: at search bar type in: checklistchecklist

#3 – Lack of Adequate BMPs#3 – Lack of Adequate BMPs

Best Management PracticesBest Management Practices

A Best Management A Best Management Practice or “BMP” is Practice or “BMP” is any structure, device any structure, device or management tool or management tool

that prevents that prevents pollutants from pollutants from

entering storm water, entering storm water, or removes pollutants or removes pollutants

from storm water from storm water once present once present

Erosion Control BMPsErosion Control BMPs

• Commonly called Commonly called “stabilization “stabilization practices”practices”

• Keeps sediment in Keeps sediment in placeplace

• Soil crusting from Soil crusting from water application is water application is not an effective or not an effective or acceptable erosion acceptable erosion control/stabilization control/stabilization BMP!!!BMP!!!Not Water!

Sediment Control BMPsSediment Control BMPs

• Captures sediment Captures sediment that is moved by that is moved by storm water before it storm water before it leaves siteleaves site

• Usually these are Usually these are your perimeter your perimeter controlscontrols

• Examples: silt Examples: silt fencing, fiber rolls, fencing, fiber rolls, sediment basinssediment basins

Gaps in coverage

Silt fencing stops

Maintain BMPs!

WASHES ARE FOR WATER!

Not for silt fences!

Perimeter Control BMPs neededPerimeter Control BMPs needed

Storm Drain Inlet ProtectionStorm Drain Inlet Protection

Bad!

Good!

#4 – Spilled concrete#4 – Spilled concrete

Designated concrete washout Designated concrete washout stationsstations

Designated concrete washout Designated concrete washout stationsstations

As the operator, you should provide a As the operator, you should provide a designated concrete washout station, and designated concrete washout station, and preferably a signed one to encourage usagepreferably a signed one to encourage usage

Designated concrete washout Designated concrete washout stationsstations

As the operator, you should provide a As the operator, you should provide a designated concrete washout station, and designated concrete washout station, and preferably a signed one to encourage usagepreferably a signed one to encourage usage

Washout stations should be linedWashout stations should be lined

Designated concrete washout Designated concrete washout stationsstations

As the operator, you should provide a As the operator, you should provide a designated concrete washout station, and designated concrete washout station, and preferably a signed one to encourage usagepreferably a signed one to encourage usage

Washout stations should be linedWashout stations should be lined

Washout stations can be a source of pollutants Washout stations can be a source of pollutants from leaks, tears and spills so inspect them from leaks, tears and spills so inspect them regularlyregularly

Designated concrete washout Designated concrete washout stationsstations

As the operator, you should provide a As the operator, you should provide a designated concrete washout station, and designated concrete washout station, and preferably a signed one to encourage usagepreferably a signed one to encourage usage

Washout stations should be linedWashout stations should be lined

Washout stations can be a source of pollutants Washout stations can be a source of pollutants from leaks, tears and spills so inspect them from leaks, tears and spills so inspect them regularlyregularly

Dispose of the concrete properly once your Dispose of the concrete properly once your containment area is filled upcontainment area is filled up

Good examples of concrete Good examples of concrete washout stationswashout stations

Implement Good Housekeeping BMPs

#5 – Routine inspections not #5 – Routine inspections not routineroutine

According to the 2008 CGP…According to the 2008 CGP…

Site inspections must be performed every two Site inspections must be performed every two weeksweeks

According to the 2008 CGP…According to the 2008 CGP…

Site inspections must be performed every two Site inspections must be performed every two weeksweeks

or within 24-hrs of a rain event if the site or within 24-hrs of a rain event if the site receives a ½-inch or more of rainreceives a ½-inch or more of rain

According to the 2008 CGP…According to the 2008 CGP…

Site inspections must be performed every two Site inspections must be performed every two weeksweeks

or within 24-hrs of a rain event if the site or within 24-hrs of a rain event if the site receives a ½-inch or more of rainreceives a ½-inch or more of rain

Must be performed by qualified personnel, that Must be performed by qualified personnel, that is, someone knowledgeable about BMPs and is, someone knowledgeable about BMPs and storm water managementstorm water management

According to the 2008 CGP…According to the 2008 CGP…

Site inspections must be performed every two Site inspections must be performed every two weeksweeks

or within 24-hrs of a rain event if the site or within 24-hrs of a rain event if the site receives a ½-inch or more of rainreceives a ½-inch or more of rain

Must be performed by qualified personnel, that Must be performed by qualified personnel, that is, someone knowledgeable about BMPs and is, someone knowledgeable about BMPs and storm water managementstorm water management

An inspection report for every inspection must An inspection report for every inspection must be kept in chronological order in the SWPPPbe kept in chronological order in the SWPPP

Will this help?Will this help?

An example An example inspection report can inspection report can be found in the permit be found in the permit in in Appendix AAppendix A!!

#6 - Trackout#6 - Trackout

Dirt in the street is a discharge to MS4

#7 – Site not posted#7 – Site not posted

#8 – No stabilization#8 – No stabilization

Part IV.B.2 states…Part IV.B.2 states…

““The operator must provide temporary The operator must provide temporary stabilization, or initiate permanent stabilization, or initiate permanent stabilization, of disturbed areas with 14 stabilization, of disturbed areas with 14 calendar days of the most recent land calendar days of the most recent land disturbance in areas where construction or disturbance in areas where construction or support activities have temporarily been support activities have temporarily been suspended or have permanently suspended or have permanently ceased…”ceased…”

#9 – No sediment control for #9 – No sediment control for temporary stockpilestemporary stockpiles

NO SEDIMENT CONTROL NO SEDIMENT CONTROL No effective No effective sediment controlssediment controls

#10 – When to submit a Notice of #10 – When to submit a Notice of Termination?Termination?

Final StabilizationFinal Stabilization

• All soil disturbing activities are completeAll soil disturbing activities are complete• All construction materials, waste, and All construction materials, waste, and

temporary BMPs have been removed and temporary BMPs have been removed and properly disposed ofproperly disposed of

• A uniform perennial vegetative cover with A uniform perennial vegetative cover with a density of 70% of the native background a density of 70% of the native background vegetative cover for the area is in place on vegetative cover for the area is in place on all unpaved area and areas not covered by all unpaved area and areas not covered by permanent structurespermanent structures

Final StabilizationFinal Stabilization

• For individual lots in For individual lots in residentialresidential constructionconstruction final stabilization means that final stabilization means that the homebuilder has completed final the homebuilder has completed final stabilization or has established temporary stabilization or has established temporary stabilization, including perimeter controlsstabilization, including perimeter controls

STAY CLASSY ARIZONA!STAY CLASSY ARIZONA!