The Idaho Department of Environmental Quality Mark Mason, P.E., Engineering Manager Idaho DEQ -...
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Transcript of The Idaho Department of Environmental Quality Mark Mason, P.E., Engineering Manager Idaho DEQ -...
The Idaho Department The Idaho Department of Environmental Qualityof Environmental Quality
Mark Mason, P.E., Engineering ManagerMark Mason, P.E., Engineering ManagerIdaho DEQ - Boise Regional OfficeIdaho DEQ - Boise Regional Office
1445 North Orchard1445 North OrchardBoise, ID 83706Boise, ID 83706208-373-0266 tel208-373-0266 tel208-373-0287 fax208-373-0287 fax
[email protected]@deq.idaho.gov
Infrastructure RequirementsInfrastructure Requirements
• Drinking Water – Source, treatment, distribution
• Wastewater – Collection, treatment, disposal
• Septic Systems – Individual, Community, Large Soil Absorption Systems
General Requirements - ProcessGeneral Requirements - Process
• Rules and Guidance: Take the time to read it all first!– http://adm.idaho.gov/adminrules/rules/
idapa58/58index.htm - link to all DEQ rules on Dept. of Admin. website
– http://www.deq.state.id.us/water/assist_business/engineers/checklists.cfm - submittal checklists
General Requirements - ProcessGeneral Requirements - Process
• Rules and Guidance - continued– http://www.deq.idaho.gov/water/prog_issues/
drinking_water/overview.cfm - Drinking Water Program overview
– http://www.deq.idaho.gov/water/prog_issues/waste_water/overview.cfm - Wastewater Program overview
General Requirements - ProcessGeneral Requirements - Process
1. Facilities Planning Study – required DEQ review and approval.
2. Preliminary Engineering Report - required DEQ review and approval.
3. Engineering Design Plans and Specifications - required DEQ review and approval.
4. Record Documents – required submittal
General Requirements - ProcessGeneral Requirements - Process
• Lifting Sanitary Restrictions– All mechanical portions of drinking water and
wastewater systems must be constructed and operational prior to lifting sanitary restrictions.
– Water and sewer piping must have designs approved by DEQ prior to lifting sanitary restrictions.
General Requirements - ProcessGeneral Requirements - Process
• Other Requirements also can apply – read the rules and then call for assistance– Permits – Septic (HD), Reuse (DEQ), NPDES
(EPA)– Water Quality Impact Analyses (NP)– Well site approvals, water quality testing,…– Technical, Financial and Managerial
documentation– Operation and Maintenance Manuals
Drinking Water Sources / Drinking Water Sources / TreatmentTreatment
• Surface Water: – DEQ Drinking Water Rules– Surface Water Treatment Rule– Slow Sand Filters– Rapid Sand Filters– Pressure Filters– Disinfection and disinfection by-product rule
Drinking Water Sources / Drinking Water Sources / TreatmentTreatment
• Wells: – DEQ Drinking Water rules– Groundwater under the direct influence of
surface water (GWUDI)– Arsenic, Nitrate, Uranium…– Disinfection and disinfection by-product rule
Drinking Water Sources / Drinking Water Sources / TreatmentTreatment
• Springs:– DEQ Drinking Water Rules– Groundwater under the direct influence of
surface water (GWUDI)– Potential to seal and use Spring Box– Arsenic, Nitrate, Uranium…– Disinfection and disinfection by-product rule
Drinking Water DistributionDrinking Water Distribution
• DEQ Drinking Water Rules– Fire flows?– Redundancy (largest source out of service,
standby power,…)– Lead, copper rule
Wastewater CollectionWastewater Collection
• DEQ Wastewater Rules– New systems– Simple extensions of gravity sewers– Lift stations
Wastewater TreatmentWastewater Treatment
• Lagoons– Primary and secondary treatment
• Mechanical (secondary) treatment– Activated sludge– Trickling filters– Sequencing Batch Reactors (SBRs)
Wastewater TreatmentWastewater Treatment
• Tertiary treatment– Filtration
• MBRs = membrane bioreactors• Other filtration technologies (sand, cloth)
– Disinfection• Chlorine• Ultra-violet light
Wastewater DisposalWastewater Disposal
• Discharge to Surface Water – NPDES permit required from EPA; 401 certification required from DEQ
• Total Containment Lagoons: not applicable everywhere
• Land Application / Reuse: DEQ permit required
ReuseReuse
• Highly treated effluent (Reclaimed Water)
• http://adm.idaho.gov/adminrules/rules/idapa58/0117.pdf - link to “Reuse Rules”– Class A: groundwater recharge; residential
landscape irrigation (zero buffer distances); toilet flushing; dust control;
– Class B: rapid infiltration basins; landscape irrigation (parks, schools, golf courses…) with buffer distances; toilet flushing; dust control;
Central Septic SystemsCentral Septic Systems
• Sizing: >2500 gpd; waste from two dwellings or building under separate ownership
• Health Department jurisdiction
• DEQ assistance
Large Soil Absorption Systems Large Soil Absorption Systems (LSAS)(LSAS)
• Sizing: > 2500 gpd in 2500 gpd modules (can be one building)
• Health Department jurisdiction
• DEQ engineering assistance
Solid WasteSolid Waste
• Rules – http://adm.idaho.gov/adminrules/rules/
idapa58/58index.htm - link to all DEQ rules on Dept. of Admin. website
– http://adm.idaho.gov/adminrules/rules/idapa58/0106.pdf - Solid Waste Management Rules
– 40 CFR part 258 – minimum requirement– If Ground Water contamination is detected, go
to full Subtitle D requirements
Solid WasteSolid Waste
• Municipal Solid Waste – Small Exempt Landfills (exempt from design
and GW monitoring)• < 20 tons per day• < 25 inches precip per year• Other
– Site Certification– “Arid” design (allowed in Idaho)
• < 25 inches precip per year• Other requirements
Solid WasteSolid Waste
– Liner requirements– Leachate collection requirements– Cover requirements – soil or subtitle D– Operational reporting requirements – HD– Ground Water reporting - DEQ