S.I. No. 293/1988 European Communities (Quality of Salmonid Waters) Regulations, 1988.

 

 

 

 

 

 

 

 

 

 

 

 

FIRST SCHEDULE

Salmonid Waters

 

 

SECOND SCHEDULE

Salmonid Water Quality Standards

 

 

THIRD SCHEDULE

Frequency of Sampling and Methods of Analysis and Inspection

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

FIRST SCHEDULE Salmonid Waters

 

 

 

Salmonid Water

Extent

River Aherlow

Main channel

River Argideen

Main channel

River Blackwater (Munster)

Main channel

River Boyne

Main channel

River Bride

Main channel

River Brown Flesk

Main channel

River Corrib, including Lough Corrib

Main channel and lake

River Dargle

Main channel

River Feale

Main channel

River Fergus

Main channel

River Finn

Main channel

River Glashagh

Main channel

River Lee

Main channel from source to Cork City waterworks at Lee Road

River Leannan

Main channel

River Lurgy

Main channel

River Maggisburn

Main channel

River Maine

Main channel downstream of confluence with the River Brown Flesk

River Moy

The following tributaries of the River Moy: Owengarve, Mullaghanoe, Spaddagh, Trimoge, Glore, Yellow, Gwesstion, Manulla, Castlebar, Deel and Corry.

Main channel

River Nore

Main channel

River Slaney

Main channel

River Swilly

Main channel

River Vartry

Main channel

 

 

 

 

 

 

SECOND SCHEDULE Salmonid Water Quality Standards

 

 

 

Parameter

Unit of Measurement

Standard

Temperature

C

Temperature measured downstream of a point of thermal discharge (at the edge of the mixing zone as determined by the local authority) must not

a)     exceed the unaffected temperature by more than 1.5C,

b)     exceed

(i)     21.5C, or

(ii)    10C, during the period from 1 November to 30 April where species which need cold water for reproduction are present

 

A thermal discharge must not cause sudden variations in temperature.

(Temperature limits to be conformed with for 98% of the time).

Dissolved Oxygen

mg/litre O2

50% ≥ 9

When the oxygen content falls below 6 mg/litre the local authority must prove that there will be no harmful consequence for the balanced development of the fish population.

pH

 

≥ 6 ≤ 9

Artificial pH variations with respect to the unaffected values shall not exceed 0.5 of a pH unit within the limits 6 and 9 provided that these variations do not increase the harmfulness of other substances present in the water.

 

Standard to be conformed with by 95% of samples over a period of 12 months where sampling is carried out at least once per month; where sampling is less frequent the standard shall be conformed with by all samples.

Suspended Solids

mg/litre

≤ 25

The standard is expressed as an average concentration over a period of 12 months and does not apply to suspended solids with harmful chemical properties.

BOD5

mg/litre O2

≤ 5

Where weed or sewage fungus growths are excessive appropriate measures for control should be taken.

 

Standard to be conformed with by 95% of samples over a period of 12 months where sampling is carried out at least once per month; where sampling is less frequent the standard shall be conformed with by all samples.

Nitrites

mg/litre NO2

≤ 0.05

To be conformed with by 95% of samples over a period of 12 months where sampling is carried out at least once per month; where sampling is less frequent the standard shall be conformed with by all samples.

Phenolic Compounds

 

Phenolic compounds must not be present in such quantities that they adversely affect fish favour.

Petroleum Hydrocarbons

 

Petroleum products must not be present in such quantities that they:

      form visible film face on the surface of the water or form coatings on the beds of water-courses and lakes

      impart a detectable "hydrocarbon" taste to fish

      produce harmful effects in fish.

Non-ionized Ammonia

mg/litre NH3

≤ 0.02

Standard may be exceeded in the form of minor peaks in daytime and, subject to this, be conformed with by 95% of samples over a period of 12 months where sampling is carried out at least once per month; where sampling is less frequent the standard shall be conformed with by all samples.

Total Ammonium

mg/litre NH4

≤ 1

subject to conforming with the standard for non-ionized ammonia.

 

Standard to be conformed with by 95% of samples over a period of 12 months where sampling is carried out at least once per month; where sampling is less frequent the standard shall be conformed with by all samples.

Total Residual Chlorine

mg/litre HOC1

≤ 0.005

Standard to be conformed with by 95% of samples over a period of 12 months where sampling is carried out at least once per month; where sampling is less frequent the standard shall be conformed with by all samples.

 

Total Zinc

mg/litre Zn

Water Hardness (mg/litre Ca CO3)

Standard

10

≤ 0.03

50

≤ 0.2

100

≤ 0.3

500

≤ 0.5

Standard to be conformed with by 95% of samples over a period of 12 months where sampling is carried out at least once per month; where sampling is less frequent the standard shall be conformed with by all samples.

Dissolved Copper

mg/litre Cu

Water Hardness (mg/litre Ca CO3)

Standard

10

≤ 0.005

50

≤ 0.022

100

≤ 0.04

300

≤ 0.112

Standard to be conformed with by 95% of samples over a period of 12 months where sampling is carried out at least once per month; where sampling is less frequent the standard shall be conformed with by all samples.

 

 

 

 

 

THIRD SCHEDULE Frequency of Sampling and Methods of Analysis and Inspection

Parameter

Frequency and Manner of Sampling

Method of Analysis or Inspection

Temperature

Weekly, both upstream and downstream of the point of thermal discharge.

Thermometry.

Dissolved Oxygen

Monthly, minimum one sample representative of low oxygen conditions of the day of sampling.

Winkler's method or specific electrodes (electro-chemical method).

However, where major daily variations are suspected, a minimum of two samples in one day shall be taken.

pH

Monthly

Electrometry calibration by means of two solutions with known pH values, preferably on either side of, and close to the pH being measured.

Suspended Solids

Monthly

Filtration through a 0.45 m filtering membrane, or centrifugation (five minutes minimum, average acceleration of 2800 to 3200g) drying at 105 C and weighing.

BOD5

Monthly

Determination of O2 by the Winkler method before and after five days incubation in complete darkness at 20 1C (nitrification should not be inhibited).

Nitrites

Monthly

Molecular absorption spectrophotometry.

Phenolic Compounds

Monthly where the presence of phenolic compounds is presumed.

By tasting fish.

Petroleum Hydrocarbons

Monthly

Visual, supplemented by tasting fish where the presence of hydrocarbons is presumed.

Non-ionized Ammonia and Total Ammonium

Monthly

Molecular absorption spectrophotomery using indophenol blue or Nessler's method associated with pH and temperature determination.

Total Residual Chlorine

Monthly

DPD-method (diethyl-p-phenylenediamene).

Total Zinc

Monthly

Atomic absorption spectrometry.

Dissolved Copper

Monthly

Atomic absorption spectrometry.