Usfuel Sunil Standrads

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National Standards and Guidelines, CAS NS u n i l B a b u K h a t r y N o t f o r P u b l i c a t i o n )

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Categories ParametersMaximum

ConcentrationLimits, (MCLs)

Remarks

PhysicalTurbidity, (NTU) 5(10)pH 6.5 - 8.5*Electrical Conductivity,( mhos/cm)

1500

Chemical

Iron, (mg/l) 0.3(3)Manganese, (mg/l) 0.2

Ammonia, (mg/l) 1.5Nitrate, (mg/l) 50

Residual Chlorine, (mg/l) 0.1 - 0.2*Only forchlorinatedsystems

!"#$%/fli6o vfg]kfgL u'0f:t/ dfkb08, @)^@ tyf /fli6o vfg]kfgL u'0f:t/ dfkb08 sfof{ Gjog lgb] { lzsf, @)^@, kl/lzi6 ! :M g]kfn ;/sf/,

ef}lts of]hgf tyf lgdf{ 0f dGqfno, l;+ xb/af/, sf7df8f}+ , @)^#!"#$%*: Represents the range values.( ): The indicated values inside the brackets represent for those water ifother alternative options are unavailable.

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Remarks

PhysicalTurbidity, (NTU) 5(10)pH 6.5 - 8.5*Electrical Conductivity 1500

Chemical

Iron, (mg/l) 0.3(3)Manganese, (mg/l) 0.2

Ammonia, (mg/l) 1.5Nitrate, (mg/l) 50

Residual Chlorine, (mg/l) 0.1 - 0.2*Only forchlorinatedsystems

!"#$%/fli6o vfg]kfgL u'0f:t/ dfkb08, @)^@ tyf /fli6o vfg]kfgL u'0f:t/ dfkb08 sfof{ Gjog lgb] { lzsf, @)^@, kl/lzi6 @ :M g]kfn ;/sf/,ef}lts of]hgf tyf lgdf{ 0f dGqfno, l;+ xb/af/, sf7df8f}+ , @)^#!"#$%

*: Represents the range values.( ): The indicated values inside the brackets represent for those water if other alternative options

are unavailable.

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Remarks

Physical

Turbidity, (NTU) 5(10)pH 6.5-8.5*Total Dissolved Solid, (mg/l) 1000Electrical Conductivity, ( ! mhos/cm) 1500

Chemical Iron, (mg/l) 0.3(3)Manganese, (mg/l) 0.2


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Remarks

Arsenic, (mg/l) 0.05 Ammonia, (mg/l) 1.5Nitrate, (mg/l) 50

Residual Chlorine, (mg/l) 0.1-0.2*Only forchlorinatedsystems

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1. *: Represents the range values.2. ( ): The indicated values inside the brackets represent for those water if other alternative

options are unavailable.3. Following schemes and water suppliers must comply the guideline values within five years

of first phase implementation:a) All town water supply projects and small town water supply schemes up to service

population of ten thousands.b) The water supply projects and schemes must comply this guideline values after the

approval of this guidelines.c) Applicable for those implementing water supply schemes and town water supply

projects in areas vulnerable for other diseases even though the service population is lessthan ten thousands.

d) Applicable for town water supplier, private industry and health related institutions.4. Following drinking water supply system must comply the guidelines after setting of

guidelines in second phase from five to ten years:a) All drinking water supply networks of district headquarters must comply the guidelines

within first three years of second phase implementation.b) All community rural water supply systems must comply the guidelines from the

beginning of second phase implementation within five years.= 7,%,#$5 -+*%.*#./> ?14,#*%5, @$A$+/ 01# B%.3/+#$*4 C0043,%+

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S. N. Characteristics Tolerance Limits 1. Total Suspended solids, mg/l, max 30-2002. Particle size of total suspended particles Shall pass 850-micron Sieve.3. pH 5.5 to 9.0

4. Temperature

Shall not exceed 40 degree C inany section of the stream within 15

meters down-stream from the

effluent outlet.5.

Biochemical oxygen demand (BOD) for 5 days at 20degree C, mg/l, max

30 ~100

6. Oils and grease, mg/l, max 107. Phenolic compounds, mg/l, max 18. Cynides (as CN), mg/l, max 0.29. Sulphides (as S), mg/l, max 210. Insecticides Absent11. Total residual chlorine, mg/l 112. Fluorides (as F), mg/l, max 213. Arsenic (as As), mg/l, max 0.214. Cadmium (as, Cd), mg/l, max 2

15. Hexavalent chromium (as Cr), mg/l, max 0.116. Copper (as Cu), mg/l, max 3


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S. N. Characteristics Tolerance Limits 17. Lead (as Pb), mg/l, max 0.118. Mercury (as Hg), mg/l, max x 0.0119. Nickel (as Ni), mg/l, max 320. Selenium (as Se), mg/l, max 0.05

21. Zinc (as Zn), mg/l, max 522. Ammonical nitrogen, mg/l, max 5023. Chemical Oxygen Demand, mg/l, max 25024. Silver, mg/l, max 0.1

Ref.: g]kfn /fhkq, v)* 51 sf&df)*f}+, a}zfv 17 ut] 2058 ! 2001 ";fn -;+Vof 3_, efu 3, g]kfn ;/sf/ hg;+Vof tyf jftfj/)fdGqfnosf] ;' rgf 1 .

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S. N. Characteristics Tolerance Limit 1. Total Suspended solids, mg/l, max 6002. pH 5.5 ~ 9.03. Temperatur e, 0C, max 45

4. Biochemical oxygen demand (BOD) for 5 days at 20 degreeC, mg/l, max

400

5. Oils and grease, mg/l, max 506. Phenolic compounds, mg/l, max 107. Cynides (as CN), mg/l, max 28. Sulphides (as S), mg/l, max 29. Chloride (Cl), mg/l, max 100010. Insecticides Absent11. Sulphates (SO 4), mg/l, max 50012. Fluorides (as F), mg/l, max 1013. Arsenic (as As), mg/l, max 114. Cadmium (as, Cd), mg/l, max 215. Total Chromium, mg/l, max 216. Copper (as Cu), mg/l, max 317. Lead (as Pb), mg/l, max 0.118. Mercury (as Hg), mg/l, max x 0.0119. Nickel (as Ni), mg/l, max 320. Selenium (as Se), mg/l, max 0.0521. Zinc (as Zn), mg/l, max 522. Ammonical nitrogen, mg/l, max 50

23. Chemical Oxygen Demand, mg/l, max 100024. Silver, mg/l, max 0.125. Total Dissolved Solids, mg/l, max 210026. Mineral Oils, mg/l, max 1027. Inhibition of nitrification test at 200ml/l < 50%

Ref.: g]kfn /fhkq, sf&df)*f}+, c;f/ 9 ut] 2060 ;fn, g]kfn ;/sf/ . (Equivalent year - 2003, Country Environmental Analysis forNepal, ADB 2004)


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Characteristics Tolerance Limits Total Suspended solids, mg/l, max 50Particle size of total suspended particles Shall pass 850-micron Sieve.pH 5.5 to 9.0

TemperatureShall not exceed 40 degree C in any section of

the stream within 15 meters down-stream fromthe effluent outlet.

Biochemical oxygen demand (BOD) for 5 days at20 degree C, mg/l, max

50

Oils and grease, mg/l, max 10Phenolic compounds, mg/l, max 1Cynides (as CN), mg/l, max 0.2Sulphides (as S), mg/l, max 2Insecticides AbsentTotal residual chlorine, mg/l 1Fluorides (as F), mg/l, max 2

Arsenic (as As), mg/l, max 0.2Cadmium (as, Cd), mg/l, max 2Hexavalent chromium (as Cr), mg/l, max 0.1Copper (as Cu), mg/l, max 3Lead (as Pb), mg/l, max 0.1Mercury (as Hg), mg/l, max 0.01Nickel (as Ni), mg/l, max 3Selenium (as Se), mg/l, max 0.05Zinc (as Zn), mg/l, max 5

Ammonical nitrogen, mg/l, max 50Chemical Oxygen Demand, mg/l, max 250Silver, mg/l, max 0.1

Ref.: g]kfn /fhkq, sf&df)*f}+, c;f/ 9 ut] 2060 ;fn, g]kfn ;/sf/ $ (Equivalent year - 2003, Country Environmental Analysis forNepal, ADB 2004)

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Characteristics Tolerance Limits

Colour and odour Absent * *Total dissolved solids, mg/l, max 2100Suspended solids, mg/l, max 100Biochemical oxygen demand(5 days at 20 0 C) mg/l, max 100Chlorides as (Cl) mg/l, max 600Hexavalent chromium (as Cr) mg/l, max 0.1Total chromium (as Cr) mg/l, max 2Sulphide (as S) mg/l, max 2Sodium %, max 60Chemical oxygen demand mg/l, max 250pH Value 6.0 ~ 9.0


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Characteristics Tolerance Limits Suspended Solids, mg/l 100Biochemical Oxygen Demand (5 days at 20 0 C), mg/l 100Oil and grease, mg/l 10Chemical Oxygen Demand, mg/l 250Total Chromium (as Cr), mg/l 2Sulphide (as S), mg/l 2Phenolic compounds (as C 6 H 5 OH), mg/l 5pH Value 5.5 ~ 9.0Temperature 0 C 40

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S. N. ParametersTolerance Limits for

Effluents1. pH 5.5 - 9

2. Suspended Solids, (mg/l) 1003.

Biological Oxygen Demand, (mg/l) 5 days at20 oC

100.0, max

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!N ?14,#*%5, @$A$+ 01# B%.3/+#$*4 C0043,%+ "$/5D*#',. Gf] t dGqfno .

A. National Ambient Air Quality Standards for Nepal

Parameters Units Averaging Time Concentration in Ambient Air,MaximumTSP ! g/m3 24 - hours 230PM10 ! g/m3 24 - hours 120PM2.5 ! g/m3 24 - hours 40

Sulfur Dioxide ! g/m3 Annual 5024-hours 70

Nitrogen Dioxide ! g/m3 Annual 4024-hours 80

Carbon Monoxide ! g/m3 8hours 10000Lead ! g/m3 Annual 0.5Benzene ! g/m3 Annual 5Ozone ! g/m3 8-hours 157Ref.: Section 62, Number 19, Nepal Gazette, Part 5, 2069/04/29, Notice 2


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B. National Indoor Air Quality Standards, 2009

C. Maximum Emission Limit for Crusher Industry

Parameter Emission Limit, ! g/Nm3 TSPM


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"# $%&'()%* +&%),%-,. /(- +(0), 1-2..0-2 3242*5 $26%*

Microenvironment Sound Pressure Level, L eqdB(A)Daytime Nighttime

Industrial Area 75 70Commercial Area 65 55Rural Settlement Area 45 40Urban Settlement Area 55 50Mixed Settlement Area 63 55Pristine Area 50 40Ref.: Section 62, Number 30, Nepal Gazette Part 5, 2069/7/13

Sunil BabuKhatry

Digitally signed by Sunil BabuKhatryDN: cn=Sunil Babu Khatry, o=CAS- N, ou=Department ofEnvironment, [email protected], c=NPDate: 2014.03.17 20:32:06 +05'45'

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Usfuel Sunil Standrads