Groundwater G Groundwater Treatment Goals G Stabilize Limit or - PDF document

Current issues Current issues Groundwater

G Groundwater Treatment Goals G � Stabilize � Limit or eliminate FeCol � Limit or eliminate FeCol � Treat to drinking water standards � monitor it

Drinking Water Standards S � Salts � Metals � Metals � VOC’s and Toxic � nutrients t i t

Facilities � Collection � Treatment � Treatment � Disposal � monitoring it i

A second view of the facility and prison.

Discharge area is on a slope that is g p terraced.

Emerging “Hot” Topics “ � Wetland systems � Irrigation of food processing waste � Irrigation of food processing waste

Wetland treatment systems � <20,000 gpd � Septic tanks in series filter � Septic tanks in series, filter � Nitrification � Oil and grease Oil d � Wetland cells (lined) � Tile field

� Average influent ammonia concentration = Average influent ammonia concentration = 143 mg/L (2005) Forest Hills Effluent Ammonia 120 100 80 80 Max Max mg/L 60 Avg Limit 40 20 0 Nov-04 Feb-05 May-05 Sep-05 Dec-05 Mar-06 Jul-06

Rule 2204 � Discharge shall not be injurious � Shall not cause runoff ponding � Shall not cause runoff, ponding, erosion, nuisance

Food processing waste � Low nutrient � May have salts � May have salts � High sugar

The spray turned on while I was there. It does not cover whole field.

chemistry � Bugs eat sugar � Oxygen is depleted � Oxygen is depleted � Oxygen from soil metals is used for respiration respiration � Metals become mobilized