TPDES Stormwater Annual Report FY2018 TPDES Stormwater Annual Report FY2018 | Page 25

tanks , hoses or nozzles . Drainage channels are policed to ensure that chemical containers or other hazardous substances , which may threaten water quality , are properly disposed .

The most frequently used control of unwanted vegetation in the City of Arlington ’ s park system is organic mulches to cover bare soil in ground cover , annual , and shrub beds . Mulches reduce erosion , increase infiltration of rain and irrigation water and reduce irrigation requirements . The organic breakdown of mulches enhances the effectiveness of pesticides , herbicides , and fertilizers . Local tree services also add their tree chips to stockpiles in the various parks for mulching .

Following the IPM philosophy , City personnel conduct soil tests to diagnose soil conditions before fertilizer applications are administered , and before shrubs are planted in the City parks . The City follows proper mowing cycles that reduce the amount of grass clippings of turf for biodegradation . This reuse of plant material provides nutrients , which reduces the amount of fertilizer required . The golf courses and parks use organic and slow release fertilizers to minimize runoff potential . Nutrient experimentation continues with various natural products such as compost , corn gluten , sea kelp and molasses to find the most effective products to use throughout the park system .

V .

List of Municipal Facilities

The City of Arlington Public Works & Transportation Department , Stormwater Management Division , Environmental Management Group maintains a list of ( owned and leased ) municipal facilities and has identified those municipal operations that may have an impact on water quality . These include :

The Asset Management Department ’ s Facility Services Division also maintains of listing of all city owned properties .

CITY OF ARLINGTON TPDES STORMWATER ANNUAL REPORT – FY 2018

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