Groundwater

Current issuesCurrent issues

G GGroundwater Treatment Goals

StabilizeLimit or eliminate FeColLimit or eliminate FeColTreat to drinking water standards

itmonitor

SDrinking Water Standards

SaltsMetalsMetalsVOC’s and Toxic

t i tnutrients

Facilities

CollectionTreatmentTreatmentDisposal

it imonitoring

A second view of the facility and prison.

Discharge area is on a slope that is g pterraced.

“Emerging “Hot” Topics

Wetland systemsIrrigation of food processing wasteIrrigation of food processing waste

Wetland treatment systems

<20,000 gpdSeptic tanks in series filterSeptic tanks in series, filterNitrificationOil dOil and greaseWetland cells (lined)Tile field

Average influent ammonia concentration =Average influent ammonia concentration = 143 mg/L (2005)

Forest Hills Effluent Ammonia

80

100

120

Max

40

60

80

mg/

L MaxAvgLimit

0

20

Nov-04 Feb-05 May-05 Sep-05 Dec-05 Mar-06 Jul-06

Rule 2204

Discharge shall not be injuriousShall not cause runoff pondingShall not cause runoff, ponding, erosion, nuisance

Food processing waste

Low nutrientMay have saltsMay have saltsHigh sugar

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

chemistry

Bugs eat sugarOxygen is depletedOxygen is depletedOxygen from soil metals is used for respirationrespirationMetals become mobilized