Pa. DEP Operator eLearning Center

Nitrogenous BOD (biochemical oxygen demand) - The stage of decomposition that occurs in biological treatment processes when specialized aerobic bacteria (nitrifiers), use DO to change ammonia to nitrate; sometimes referred to as second-stage BOD.

• (BNR01) Nitrification and Denitrification – An Introduction to Nitrogen Removal (1485)
• (BNR02) Nitrification Factors – Suspended Growth Treatment Systems (1821)

NOM – Natural Organic Matter
Organic matter that exists naturally in the water environment.

• (DBP01) DBP Rule – Overview (1282)
• (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
• (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
• DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)

Non-exceptional quality biosolids are biosolids that meet specified pollutant and pathogen reduction criteria. Criteria for non-exceptional quality biosolids are less stringent than criteria for exceptional quality biosolids.

Note: The term 'Biosolids' can be used to refer to all categories of biosolids collectively, or can be used to refer specifically to the category non-exceptional quality biosolids.

• (BIO02) Biosolids Agronomic Loading Rates Part 2 – Manure (1484)

Noncommunity Water System (NCWS)

1. A public water system that is not a community water system
   • (DBP15) DBP Rule – Maintaining Compliance for Pa. PWSs using Chlorine/Chloramines (1570)
2. A public water system that is not a community water system. Noncommunity water systems are further categorized as nontransient and transient water systems.
   • (PNR01) Public Notification – An Introduction for NCWSs (2332)

Particles that take a lengthy amount of time to settle by gravity (i.e. many hours, days, or years).

• (COA01) Coagulation – Part 1: The Chemistry of Coagulation (1248)

1. Nontransient Noncommunity Water System (NTNCWS)
   • (DBP01) DBP Rule – Overview (1282)
   • (DBP02) DBP Rule Monitoring and Reporting – Job Aids (1283)
   • (DBP10) DBP Rule Monitoring and Reporting for Chlorine⁄Chloramines (1284)
   • (DBP13) DBP Rule Monitoring and Reporting for TTHM⁄HAA5 (1285)
   • (DBP14) DBP Rule Violations for Pa. PWSs using Chorine⁄Chloramines (1825)
   • (DBP15) DBP Rule – Maintaining Compliance for Pa. PWSs using Chlorine/Chloramines (1570)
   • (DBP30) DBP Rule Monitoring and Reporting Requirements for PWSs Using Ozone (1279)
   • (LCR12) LCR Planning Tools for CWS (2536)
   • (LCR13) LCR Planning Tools for NTNCWS (2537)
   • (TCR02) Total Coliform Rule – Monitoring And Reporting Requirements (1425)
   • (TCR03) Total Coliform Rule – Maintaining Compliance (1426)
2. A noncommunity water system that regularly serves at least 25 of the same persons over 6 months per year.
   • (LCR10) Lead and Copper Rule – Basics (1423)
   • (LCR11) LCR – Initial Planning, Monitoring and Reporting (1488)

Notice of Violation (NOV)

1. An informal notice from the Pa DEP telling a regulated facility what aspects of a Pa. regulation they have not complied with.
2. n informal notice telling the PWS what aspects of the TCR they have not complied with

• (TCR01) Total Coliform Rule – Overview (1424)

NOV – Notice of Violation

1. An informal notice from the Pa DEP telling a regulated facility what aspects of a Pa. regulation they have not complied with.
2. An informal notice telling the PWS what aspects of the TCR they have not complied with.

• • (TCR01) Total Coliform Rule – Overview (1424)
  • TCR02) Total Coliform Rule – Monitoring And Reporting Requirements (1425)
  • (TCR03) Total Coliform Rule – Maintaining Compliance (1426)

NPDES - National Pollutant Discharge Elimination System

• (BNR01) Nitrification and Denitrification – An Introduction to Nitrogen Removal (1485)
• (BNR02) Nitrification Factors – Suspended Growth Treatment Systems (1821)

NPDWR – National Primary Drinking Water Regulations

NPDWRs (or primary standards) are legally enforceable standards that apply to public water systems.

• (PNR10) Public Notification – An Introduction for NCWSs (2332)
• (PNR11) Public Notification – Violations and Tiers for NCWSs (2333)