The Idaho Department of Environmental Quality Mark Mason

The Idaho Department of Environmental Quality Mark Mason, P. E. , Engineering Manager Idaho DEQ - Boise Regional Office 1445 North Orchard Boise, ID 83706 208 -373 -0266 tel 208 -373 -0287 fax mark. mason@deq. idaho. gov

Infrastructure Requirements • Drinking Water – Source, treatment, distribution • Wastewater – Collection, treatment, disposal • Septic Systems – Individual, Community, Large Soil Absorption Systems

General Requirements - Process • Rules and Guidance: Take the time to read it all first! – http: //adm. idaho. gov/adminrules/idapa 58 /58 index. htm - link to all DEQ rules on Dept. of Admin. website – http: //www. deq. state. id. us/water/assist_busine ss/engineers/checklists. cfm - submittal checklists

General Requirements - Process • Rules and Guidance - continued – http: //www. deq. idaho. gov/water/prog_issues/d rinking_water/overview. cfm - Drinking Water Program overview – http: //www. deq. idaho. gov/water/prog_issues/ waste_water/overview. cfm - Wastewater Program overview

General 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 - 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 - 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 / Treatment • 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 / Treatment • 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 / Treatment • 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 Distribution • DEQ Drinking Water Rules – Fire flows? – Redundancy (largest source out of service, standby power, …) – Lead, copper rule

Wastewater Collection • DEQ Wastewater Rules – New systems – Simple extensions of gravity sewers – Lift stations

Wastewater Treatment • Lagoons – Primary and secondary treatment • Mechanical (secondary) treatment – Activated sludge – Trickling filters – Sequencing Batch Reactors (SBRs)

Wastewater Treatment • Tertiary treatment – Filtration • MBRs = membrane bioreactors • Other filtration technologies (sand, cloth) – Disinfection • Chlorine • Ultra-violet light

Wastewater 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

Reuse • Highly treated effluent (Reclaimed Water) • http: //adm. idaho. gov/adminrules/idap a 58/0117. 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;

Septic Systems • Individual Systems • Central Systems • Large Soil Absorption Systems

Individual Septic Systems • Health Department jurisdiction

Central Septic Systems • Sizing: >2500 gpd; waste from two dwellings or building under separate ownership • Health Department jurisdiction • DEQ assistance

Large Soil Absorption Systems (LSAS) • Sizing: > 2500 gpd in 2500 gpd modules (can be one building) • Health Department jurisdiction • DEQ engineering assistance

Solid Waste • Rules – http: //adm. idaho. gov/adminrules/idapa 58 /58 index. htm - link to all DEQ rules on Dept. of Admin. website – http: //adm. idaho. gov/adminrules/idapa 58 /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 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 Waste – Liner requirements – Leachate collection requirements – Cover requirements – soil or subtitle D – Operational reporting requirements – HD – Ground Water reporting - DEQ

Questions? ?