TPDES Stormwater Annual Report FY2021 TPDES Stormwater Annual Report FY2021 | Page 33

I .

Requirements for Structural and Nonstructural BMPs

Structural and nonstructural BMPs are required by construction site operators through local ordinance that requires operators of construction sites to have an NPDES or TPDES permit to discharge stormwater . Additionally , the ordinance requires these facilities to operate in strict compliance with the requirements of its NPDES or TPDES permit . These permits require operators to utilize appropriate erosion and sediment control BMPs .

The City of Arlington ’ s Planning & Development Services ( PDS ) Department reviews and accepts construction plats , site plans public improvement plans , and issues demolition , commercial , and residential construction permits . During the reporting period , PDS reviewed and / or issued the following :

The City requires Stormwater Pollution Prevention Plans ( SWPPPs ) for all building and construction permit applications greater than one acre . The city ’ s permitting process requires BMPs for erosion and sediment controls to protect water quality for all construction disturbances including those less than one acre . During the reporting period , Environmental Management received 115 reviewed and approved PDS SWPPPs , construction plans , site notices , and / or SWPPP contact sheets as part of the construction application process .

II .

Inspection of Construction Sites and Enforcement Requirements

Environmental Specialists inspect construction sites for compliance with stormwater management requirements and practices and initiate enforcement actions as necessary . Inspections are for large construction sites ( 5 acres or greater land disturbance , or that of any size and located within a common plan of development ) and small construction sites with land disturbances one acre to five acres in size . Sites that disturb less than once acre are also inspected for compliance with the City of Arlington stormwater ordinance . Inspections , investigations , and resulting enforcement actions during the inspection period are itemized below .

Inspection and Enforcement Data ( respectively ):

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