EUR-Lex - 31979L0923

31979L0923

Council Directive 79/923/EEC of 30 October 1979 on the = quality=20 required of shellfish waters

Official Journal L 281 = ,=20 10/11/1979 P. 0047 - 0052
Finnish special edition: Chapter 15 Volume = 2 P.=20 0200
Greek special edition: Chapter 15 Volume 1 P. 0230
Swedish = special=20 edition: Chapter 15 Volume 2 P. 0200
Spanish special edition: = Chapter 15=20 Volume 2 P. 0156
Portuguese special edition Chapter 15 Volume 2 P. = 0156=20

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( 1 ) OJ NO C 283 , 30 . 11 . 1976 , P . 3 .

( 2 ) OJ NO C 133 , 6 . 6 . 1977 , P . 48 .

( 3 ) OJ NO C 114 , 11 . 5 . 1977 , P . 29 .

( 4 ) OJ NO C 112 , 20 . 12 . 1973 , P . 3 .

( 5 ) OJ NO C 139 , 13 . 6 . 1977 , P . 3 .

( 6 ) OJ NO L 222 , 14 . 8 . 1978 , P . 1 .

( 1 ) OJ NO L 129 , 18 . 5 . 1976 , P . 23 .

COUNCIL DIRECTIVE

OF 30 OCTOBER 1979

ON THE QUALITY REQUIRED OF SHELLFISH WATERS

( 79/923/EEC )

THE COUNCIL OF THE EUROPEAN

COMMUNITIES ,

HAVING REGARD TO THE TREATY ESTABLISHING THE EUROPEAN ECONOMIC = COMMUNITY ,=20 AND IN PARTICULAR ARTICLES 100 AND 235 THEREOF ,

HAVING REGARD TO THE PROPOSAL FROM THE COMMISSION ( 1 ),

HAVING REGARD TO THE OPINION OF THE EUROPEAN PARLIAMENT ( 2 ),

HAVING REGARD TO THE OPINION OF THE ECONOMIC AND SOCIAL COMMITTEE ( 3 = ),

WHEREAS THE PROTECTION AND IMPROVEMENT OF THE ENVIRONMENT NECESSITATE = CONCRETE MEASURES TO PROTECT WATERS , INCLUDING SHELLFISH WATERS , = AGAINST=20 POLLUTION ;

WHEREAS IT IS NECESSARY TO SAFEGUARD CERTAIN SHELLFISH POPULATIONS = FROM=20 VARIOUS HARMFUL CONSEQUENCES , RESULTING FROM THE DISCHARGE OF POLLUTANT = SUBSTANCES INTO THE SEA ;

WHEREAS THE PROGRAMMES OF ACTION OF THE EUROPEAN COMMUNITIES ON THE=20 ENVIRONMENT OF 1973 ( 4 ) AND 1977 ( 5 ) PROVIDE THAT QUALITY OBJECTIVES = ARE TO=20 BE JOINTLY DRAWN UP FIXING THE VARIOUS REQUIREMENTS WHICH AN ENVIRONMENT = MUST=20 MEET , INTER ALIA THE DEFINITION OF PARAMETERS FOR WATER , INCLUDING = SHELLFISH=20 WATERS ;

WHEREAS DIFFERENCES BETWEEN THE PROVISIONS ALREADY IN FORCE OR IN = PREPARATION=20 IN THE VARIOUS MEMBER STATES AS REGARDS THE QUALITY REQUIRED OF = SHELLFISH WATERS=20 MAY CREATE UNEQUAL CONDITIONS OF COMPETITION AND THUS DIRECTLY AFFECT = THE=20 FUNCTIONING OF THE COMMON MARKET ; WHEREAS LAWS IN THIS FIELD SHOULD = THEREFORE=20 BE APPROXIMATED AS PROVIDED FOR BY ARTICLE 100 OF THE TREATY ;

WHEREAS IT IS NECESSARY TO COUPLE THIS APPROXIMATION OF LAWS WITH = COMMUNITY=20 ACTION AIMING TO ACHIEVE , BY MEANS OF WIDER-RANGING PROVISIONS , ONE OF = THE=20 COMMUNITY ' S OBJECTIVES IN THE FIELD OF ENVIRONMENTAL PROTECTION AND = THE=20 IMPROVEMENT OF THE QUALITY OF LIFE ; WHEREAS CERTAIN SPECIFIC PROVISIONS = MUST BE=20 LAID DOWN IN THIS CONNECTION ; WHEREAS , SINCE THE SPECIFIC POWERS OF = ACTION=20 REQUIRED TO THIS END HAVE NOT BEEN PROVIDED FOR IN THE TREATY , IT IS = NECESSARY=20 TO INVOKE ARTICLE 235 THEREOF ;

WHEREAS , IN ORDER TO ATTAIN THE OBJECTIVES OF THE DIRECTIVE , THE = MEMBER=20 STATES WILL HAVE TO DESIGNATE THE WATERS TO WHICH IT WILL APPLY AND WILL = HAVE TO=20 SET LIMIT VALUES CORRESPONDING TO CERTAIN PARAMETERS ; WHEREAS THE = WATERS SO=20 DESIGNATED WILL HAVE TO CONFORM TO THESE VALUES WITHIN SIX YEARS OF = DESIGNATION=20 ;

WHEREAS FOR THE PURPOSE OF CHECKING THE QUALITY REQUIRED OF SHELLFISH = WATERS=20 , A MINIMUM NUMBER OF SAMPLES SHOULD BE TAKEN AND THE MEASUREMENTS = RELATING TO=20 PARAMETERS SET OUT IN THE ANNEX SHOULD BE CARRIED OUT ; WHEREAS SUCH = SAMPLING=20 MAY BE REDUCED OR DISCONTINUED IN THE LIGHT OF THE RESULTS OF THE = MEASUREMENTS ;=20

WHEREAS CERTAIN NATURAL CIRCUMSTANCES ARE BEYOND THE CONTROL OF THE = MEMBER=20 STATES AND IT IS THEREFORE NECESSARY TO PROVIDE FOR THE POSSIBILITY OF=20 DEROGATING FROM THIS DIRECTIVE IN CERTAIN CASES ;

WHEREAS TECHNICAL AND SCIENTIFIC PROGRESS MAY MAKE NECESSARY THE = RAPID=20 ADAPTATION OF SOME OF THE REQUIREMENTS LAID DOWN IN THE ANNEXES ; = WHEREAS , IN=20 ORDER TO FACILITATE THE INTRODUCTION OF THE MEASURES REQUIRED FOR THIS = PURPOSE ,=20 A PROCEDURE SHOULD BE LAID DOWN ESTABLISHING CLOSE COOPERATION BETWEEN = THE=20 MEMBER STATES AND THE COMMISSION ; WHEREAS SUCH COOPERATION SHOULD TAKE = PLACE IN=20 THE COMMITTEE ON ADAPTATION TO TECHNICAL AND SCIENTIFIC PROGRESS SET UP = BY=20 ARTICLE 13 OF THE COUNCIL DIRECTIVE 78/659/EEC OF 18 JULY 1978 ON THE = QUALITY OF=20 FRESH WATERS NEEDING PROTECTION OR IMPROVEMENT IN ORDER TO SUPPORT FISH = LIFE ( 6=20 );

WHEREAS THIS DIRECTIVE CANNOT , BY ITSELF , ENSURE PROTECTION OF = CONSUMERS OF=20 SHELLFISH PRODUCTS ; WHEREAS PROPOSALS TO THIS END SHOULD THEREFORE BE = SUBMITTED=20 BY THE COMMISSION AS SOON AS POSSIBLE ,

HAS ADOPTED THIS DIRECTIVE :

ARTICLE 1

THIS DIRECTIVE CONCERNS THE QUALITY OF SHELLFISH WATERS AND APPLIES = TO THOSE=20 COASTAL AND BRACKISH WATERS DESIGNATED BY THE MEMBER STATES AS NEEDING=20 PROTECTION OR IMPROVEMENT IN ORDER TO SUPPORT SHELLFISH ( BIVALVE AND = GASTEROPOD=20 MOLLUSCS ) LIFE AND GROWTH AND THUS TO CONTRIBUTE TO THE HIGH QUALITY OF = SHELLFISH PRODUCTS DIRECTLY EDIBLE BY MAN .

ARTICLE 2

THE PARAMETERS APPLICABLE TO THE WATERS DESIGNATED BY THE MEMBER = STATES ARE=20 LISTED IN THE ANNEX .

ARTICLE 3

1 . MEMBER STATES SHALL , FOR THE DESIGNATED WATERS , SET VALUES FOR = THE=20 PARAMETERS LISTED IN THE ANNEX , IN SO FAR AS VALUES ARE GIVEN IN COLUMN = G OR IN=20 COLUMN I . THEY SHALL COMPLY WITH THE COMMENTS CONTAINED IN BOTH COLUMNS = .

2 . MEMBER STATES SHALL NOT SET VALUES LESS STRINGENT THAN THOSE = GIVEN IN=20 COLUMN I OF THE ANNEX AND SHALL ENDEAVOUR TO OBSERVE THE VALUES IN = COLUMN G ,=20 WHILE TAKING INTO ACCOUNT THE PRINCIPLE SET OUT IN ARTICLE 8 .

3 . FOR DISCHARGES OF EFFLUENTS FALLING WITHIN PARAMETERS ' = ORGANOHALOGENATED=20 SUBSTANCES ' AND ' METALS ' , THE EMISSION STANDARDS LAID DOWN BY THE = MEMBER=20 STATES PURSUANT TO COUNCIL DIRECTIVE 76/464/EEC OF 4 MAY 1976 ON = POLLUTION=20 CAUSED BY CERTAIN DANGEROUS SUBSTANCES DISCHARGED INTO THE AQUATIC = ENVIRONMENT=20 OF THE COMMUNITY ( 1 ) SHALL BE APPLIED AT THE SAME TIME AS THE QUALITY=20 OBJECTIVES AND THE OTHER OBLIGATIONS ARISING FROM THIS DIRECTIVE , IN = PARTICULAR=20 THOSE RELATING TO SAMPLING .

ARTICLE 4

1 . MEMBER STATES SHALL , INITIALLY WITHIN A TWO-YEAR PERIOD = FOLLOWING THE=20 NOTIFICATION OF THIS DIRECTIVE , DESIGNATE SHELLFISH WATERS .

2 . MEMBER STATES MAY SUBSEQUENTLY MAKE ADDITIONAL DESIGNATIONS . =

3 . MEMBER STATES MAY REVISE THE DESIGNATION OF CERTAIN WATERS OWING = IN=20 PARTICULAR TO FACTORS UNFORESEEN AT THE TIME OF DESIGNATION , TAKING = INTO=20 ACCOUNT THE PRINCIPLE SET OUT IN ARTICLE 8 .

ARTICLE 5

MEMBER STATES SHALL ESTABLISH PROGRAMMES IN ORDER TO REDUCE POLLUTION = AND TO=20 ENSURE THAT DESIGNATED WATERS CONFORM , WITHIN SIX YEARS FOLLOWING = DESIGNATION=20 IN ACCORDANCE WITH ARTICLE 4 , TO BOTH THE VALUES SET BY THE MEMBER = STATES IN=20 ACCORDANCE WITH ARTICLE 3 AND THE COMMENTS CONTAINED IN COLUMNS G AND I = OF THE=20 ANNEX .

ARTICLE 6

1 . FOR THE PURPOSES OF IMPLEMENTING ARTICLE 5 , THE DESIGNATED = WATERS SHALL=20 BE DEEMED TO CONFORM TO THE PROVISIONS OF THIS DIRECTIVE IF SAMPLES OF = SUCH=20 WATERS , TAKEN AT THE MINIMUM FREQUENCY SPECIFIED IN THE ANNEX , AT THE = SAME=20 SAMPLING POINT AND OVER A PERIOD OF 12 MONTHS , SHOW THAT THEY CONFORM = TO BOTH=20 THE VALUES SET BY THE MEMBER STATES IN ACCORDANCE WITH ARTICLE 3 AND THE = COMMENTS CONTAINED IN COLUMNS G AND I OF THE ANNEX , AS REGARDS :

- 100 % OF THE SAMPLES FOR THE PARAMETERS ' ORGANOHALOGENATED = SUBSTANCES '=20 AND ' METALS ' ;

- 95 % OF THE SAMPLES FOR THE PARAMETERS ' SALINITY ' AND ' DISSOLVED = OXYGEN=20 ' ;

- 75 % OF THE SAMPLES FOR THE OTHER PARAMETERS LISTED IN THE ANNEX . =

IF , IN ACCORDANCE WITH ARTICLE 7 ( 2 ), THE SAMPLING FREQUENCY FOR = ALL THE=20 PARAMETERS IN THE ANNEX EXCEPT ' ORGANOHALOGENATED SUBSTANCES ' AND ' = METALS '=20 IS LOWER THAN THAT INDICATED IN THE ANNEX , THE ABOVEMENTIONED VALUES = AND=20 COMMENTS SHALL BE COMPLIED WITH IN THE CASE OF ALL THE SAMPLES .

2 . INSTANCES IN WHICH THE VALUES SET BY MEMBER STATES IN ACCORDANCE = WITH=20 ARTICLE 3 OR THE COMMENTS CONTAINED IN COLUMNS G AND I OF THE ANNEX ARE = NOT=20 RESPECTED SHALL NOT BE TAKEN INTO CONSIDERATION IN THE CALCULATION OF = THE=20 PERCENTAGES PROVIDED FOR IN PARAGRAPH 1 WHEN IT IS THE RESULT OF A = DISASTER .=20

ARTICLE 7

1 . THE COMPETENT AUTHORITIES IN THE MEMBER STATES SHALL CARRY OUT = SAMPLING=20 OPERATIONS , THE MINIMUM FREQUENCY OF WHICH IS LAID DOWN IN THE ANNEX . =

2 . WHERE THE COMPETENT AUTHORITY RECORDS THAT THE QUALITY OF = DESIGNATED=20 WATERS IS APPRECIABLY HIGHER THAN THAT WHICH WOULD RESULT FROM THE = APPLICATION=20 OF THE VALUES SET IN ACCORDANCE WITH ARTICLE 3 AND THE COMMENTS = CONTAINED IN=20 COLUMNS G AND I OF THE ANNEX , THE FREQUENCY OF THE SAMPLING MAY BE = REDUCED .=20 WHERE THERE IS NO POLLUTION AND NO RISK OF DETERIORATION IN THE QUALITY = OF THE=20 WATERS , THE COMPETENT AUTHORITY CONCERNED MAY DECIDE THAT NO SAMPLING = IS=20 NECESSARY .

3 . IF SAMPLING SHOWS THAT A VALUE SET IN ACCORDANCE WITH ARTICLE 3 = OR A=20 COMMENT CONTAINED IN COLUMNS G OR I OF THE ANNEX IS NOT RESPECTED , THE=20 COMPETENT AUTHORITY SHALL ESTABLISH WHETHER THIS IS THE RESULT OF CHANCE = , A=20 NATURAL PHENOMENON OR POLLUTION AND SHALL ADOPT APPROPRIATE MEASURES . =

4 . THE EXACT SAMPLING POINT , THE DISTANCE FROM THIS POINT TO THE = NEAREST=20 POINT WHERE POLLUTANTS ARE DISCHARGED AND THE DEPTH AT WHICH THE SAMPLES = ARE TO=20 BE TAKEN SHALL BE FIXED BY THE COMPETENT AUTHORITY OF EACH MEMBER STATE = ON THE=20 BASIS OF LOCAL ENVIRONMENTAL CONDITIONS IN PARTICULAR .

5 . THE REFERENCE METHODS OF ANALYSIS TO BE USED FOR CALCULATING THE = VALUE OF=20 THE PARAMETERS CONCERNED ARE SET OUT IN THE ANNEX . LABORATORIES WHICH = EMPLOY=20 OTHER METHODS SHALL ENSURE THAT THE RESULTS OBTAINED ARE EQUIVALENT OR=20 COMPARABLE TO THOSE SPECIFIED IN THE ANNEX .

ARTICLE 8

IMPLEMENTATION OF THE MEASURES TAKEN PURSUANT TO THIS DIRECTIVE MAY = ON NO=20 ACCOUNT LEAD , EITHER DIRECTLY OR INDIRECTLY , TO INCREASED POLLUTION OF = COASTAL=20 AND BRACKISH WATERS .

ARTICLE 9

MEMBER STATES MAY AT ANY TIME SET MORE STRINGENT VALUES FOR = DESIGNATED WATERS=20 THAN THOSE LAID DOWN IN THIS DIRECTIVE . THEY MAY ALSO LAY DOWN = PROVISIONS=20 RELATING TO OTHER PARAMETERS THAN THOSE PROVIDED FOR IN THIS DIRECTIVE . =

ARTICLE 10

WHERE A MEMBER STATE CONSIDERS DESIGNATING SHELLFISH WATERS IN THE = IMMEDIATE=20 VICINITY OF A FRONTIER WITH ANOTHER MEMBER STATE , THESE STATES SHALL = CONSULT=20 EACH OTHER IN ORDER TO DETERMINE THE STRETCHES OF SUCH WATERS TO WHICH = THIS=20 DIRECTIVE MIGHT APPLY AND THE CONSEQUENCES TO BE DRAWN FROM THE COMMON = QUALITY=20 OBJECTIVES ; THESE CONSEQUENCES SHALL BE DETERMINED , AFTER FORMAL = CONSULTATIONS=20 , BY EACH STATE CONCERNED . THE COMMISSION MAY PARTICIPATE IN THESE=20 DELIBERATIONS .

ARTICLE 11

THE MEMBER STATES MAY DEROGATE FROM THIS DIRECTIVE IN THE EVENT OF=20 EXCEPTIONAL WEATHER OR GEOGRAPHICAL CONDITIONS .

ARTICLE 12

SUCH AMENDMENTS AS ARE NECESSARY FOR ADAPTING TO TECHNICAL AND = SCIENTIFIC=20 PROGRESS THE G VALUES FOR THE PARAMETERS AND THE METHODS OF ANALYSIS = CONTAINED=20 IN THE ANNEX SHALL BE ADOPTED BY THE COMMITTEE SET UP BY ARTICLE 13 OF = DIRECTIVE=20 78/659/EEC IN ACCORDANCE WITH THE PROCEDURE LAID DOWN IN ARTICLE 14 = THEREOF .=20

ARTICLE 13

FOR THE PURPOSE OF APPLYING THIS DIRECTIVE , MEMBER STATES SHALL = PROVIDE THE=20 COMMISSION WITH INFORMATION CONCERNING :

- THE WATERS DESIGNATED IN ACCORDANCE WITH ARTICLE 4 ( 1 ) AND ( 2 ), = IN=20 SUMMARY FORM ,

- THE REVISION OF THE DESIGNATION OF CERTAIN WATERS IN ACCORDANCE = WITH=20 ARTICLE 4 ( 3 ),

- THE PROVISIONS LAID DOWN IN ORDER TO ESTABLISH NEW PARAMETERS IN = ACCORDANCE=20 WITH ARTICLE 9 .

WHERE A MEMBER STATE APPLIES THE PROVISIONS OF ARTICLE 11 , IT SHALL=20 FORTHWITH NOTIFY THE COMMISSION THEREOF , STATING ITS REASONS AND THE = PERIODS=20 ANTICIPATED .

MORE GENERALLY , MEMBER STATES SHALL PROVIDE THE COMMISSION , ON A = REASONED=20 REQUEST FROM THE LATTER , WITH ANY INFORMATION NECESSARY FOR THE = APPLICATION OF=20 THIS DIRECTIVE .

ARTICLE 14

1 . MEMBER STATES SHALL , SIX YEARS FOLLOWING THE INITIAL DESIGNATION = IN=20 ACCORDANCE WITH ARTICLE 4 ( 1 ), AND AT REGULAR INTERVALS THEREAFTER , = SUBMIT A=20 DETAILED REPORT TO THE COMMISSION ON DESIGNATED WATERS AND THE BASIC = FEATURES=20 THEREOF .

2 . THE COMMISSION SHALL , WITH THE PRIOR CONSENT OF THE MEMBER STATE = ,=20 PUBLISH THE INFORMATION OBTAINED .

ARTICLE 15

1 . MEMBER STATES SHALL BRING INTO FORCE THE LAWS , REGULATIONS AND=20 ADMINISTRATIVE PROVISIONS NECESSARY TO COMPLY WITH THIS DIRECTIVE WITHIN = TWO=20 YEARS OF ITS NOTIFICATION . THEY SHALL FORTHWITH INFORM THE COMMISSION = THEREOF .=20

2 . MEMBER STATES SHALL COMMUNICATE TO THE COMMISSION THE TEXTS OF = THE MAIN=20 PROVISIONS OF NATIONAL LAW WHICH THEY ADOPT IN THE FIELD GOVERNED BY = THIS=20 DIRECTIVE .

ARTICLE 16

THIS DIRECTIVE IS ADDRESSED TO THE MEMBER STATES .

DONE AT LUXEMBOURG , 30 OCTOBER 1979 .

FOR THE COUNCIL

THE PRESIDENT

M . O ' KENNEDY

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ANNEX

QUALITY OF SHELLFISH WATERS

// //

// PARAMETER // G // I // REFERENCE METHODS OF ANALYSIS // MINIMUM = SAMPLING=20 AND MEASURING FREQUENCY //

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1 .

2 .

3 .

4 .

5 .

6 .

7 .

8 .

9 .

10 .

11 .

12 .

PH UNIT

TEMPERATURE * C

COLORATION ( AFTER FILTRATION ) MG PT/L

SUSPENDED SOLIDS MG/L

SALINITY PRO MILLE

DISSOLVED OXYGEN

SATURATION %

PETROLEUM HYDROCARBONS

ORGANOHALOGENATED SUBSTANCES // METALS //

SILVER // AG //

ARSENIC // AS //

CADMIUM // CD //

CHROMIUM // CR //

COPPER // CU //

MERCURY // HG //

NICKEL // NI //

LEAD // PB //

ZINC // ZN //

MG/L //

FAECAL

COLIFORMS/100 ML

SUBSTANCES

AFFECTING THE TASTE OF THE SHELLFISH

SAXITOXIN

( PRODUCED BY

DINOFLAGELLATES )

A DISCHARGE AFFECTING SHELLFISH WATERS MUST NOT CAUSE THE TEMPERATURE = OF THE=20 WATERS TO EXCEED BY MORE THAN 2 * C THE TEMPERATURE OF WATERS NOT SO = AFFECTED=20

12 TO 38 PRO MILLE

* 80 %

THE CONCENTRATION OF EACH SUBSTANCE IN SHELLFISH FLESH MUST BE SO = LIMITED=20 THAT IT CONTRIBUTES , IN ACCORDANCE WITH ARTICLE 1 , TO THE HIGH QUALITY = OF=20 SHELLFISH PRODUCTS

THE CONCENTRATION OF EACH SUBSTANCE IN SHELLFISH FLESH MUST BE SO = LIMITED=20 THAT IT CONTRIBUTES IN ACCORDANCE WITH ARTICLE 1 , TO THE HIGH QUALITY = OF=20 SHELLFISH PRODUCTS

* 300 IN THE SHELLFISH FLESH AND INTERVALVULAR LIQUID ( 1 )

7 - 9

A DISCHARGE AFFECTING SHELLFISH WATERS MUST NOT CAUSE THE COLOUR OF = THE=20 WATERS AFTER FILTRATION TO DEVIATE BY MORE THAN 10 MG PT/L FROM THE = COLOUR OF=20 WATERS NOT SO AFFECTED

A DISCHARGE AFFECTING SHELLFISH WATERS MUST NOT CAUSE THE SUSPENDED = SOLID=20 CONTENT OF THE WATERS TO EXCEED BY MORE THAN 30 % THE CONTENT OF WATERS = NOT SO=20 AFFECTED

- * 40 PRO MILLE

- DISCHARGE AFFECTING SHELLFISH WATERS MUST NOT CAUSE THEIR SALINITY = TO=20 EXCEED BY MORE THAN 10 % THE SALINITY OF WATERS NOT SO AFFECTED

- * 70 % ( AVERAGE VALUE )

- SHOULD AN INDIVIDUAL MEASUREMENT INDICATE A VALUE LOWER THAN 70 % , = MEASUREMENTS SHALL BE REPEATED

- AN INDIVIDUAL MEASUREMENT MAY NOT INDICATE A VALUE OF LESS THAN 60 = % UNLESS=20 THERE ARE NO HARMFUL CONSEQUENCES FOR THE DEVELOPMENT OF SHELLFISH = COLONIES

HYDROCARBONS MUST NOT BE PRESENT IN THE SHELLFISH WATER IN SUCH = QUANTITIES AS=20 TO :

- PRODUCE A VISIBLE FILM ON THE SURFACE OF THE WATER AND/OR A DEPOSIT = ON THE=20 SHELLFISH ,

- HAVE HARMFUL EFFECTS ON THE SHELLFISH

THE CONCENTRATION OF EACH SUBSTANCE IN THE SHELLFISH WATER OR IN = SHELLFISH=20 FLESH MUST NOT REACH OR EXCEED A LEVEL WHICH HAS HARMFUL EFFECTS ON THE=20 SHELLFISH AND LARVAE

THE CONCENTRATION OF EACH SUBSTANCE IN THE SHELLFISH WATER OR IN THE=20 SHELLFISH FLESH MUST NOT EXCEED A LEVEL WHICH GIVES RISE TO HARMFUL = EFFECTS ON=20 THE SHELLFISH AND THEIR LARVAE

THE SYNERGIC EFFECTS OF THESE METALS MUST BE TAKEN INTO CONSIDERATION =

CONCENTRATION LOWER THAN THAT LIABLE TO IMPAIR THE TASTE OF THE = SHELLFISH=20

- ELECTROMETRY

MEASURED IN SITU AT THE TIME OF SAMPLING

- THERMOMETRY

MEASURED IN SITU AT THE TIME OF SAMPLING

- FILTER THROUGH A 0.45 TEM MEMBRANE

PHOTOMETRIC METHOD , USING THE PLATINUM/COBALT SCALE

- FILTRATION THROUGH A 0.45 TRM MEMBRANE , DRYING AT 105 * C AND = WEIGHING=20

- CENTRIFUGING ( FOR AT LEAST FIVE MINUTES , WITH MEAN ACCELERATION 2 = 800 TO=20 3 200 G ), DRYING AT 105 * C AND WEIGHING

CONDUCTIMETRY

- WINKLER ' S METHOD

- ELECTROCHEMICAL METHOD

VISUAL EXAMINATION

GAS CHROMATOGRAPHY AFTER EXTRACTION WITH SUITABLE SOLVENTS AND = PURIFICATION=20

SPECTROMETRY OF ATOMIC ABSORPTION PRECEDED , WHERE APPROPRIATE , BY=20 CONCENTRATION AND/OR EXTRACTION

METHOD OF DILUTION WITH FERMENTATION IN LIQUID SUBSTRATES IN AT LEAST = THREE=20 TUBES IN THREE DILUTIONS . SUBCULTURING OF THE POSITIVE TUBES ON A = CONFIRMATION=20 MEDIUM . COUNT ACCORDING TO MPN ( MOST PROBABLE NUMBER ). INCUBATION = TEMPERATURE=20 44 * C MORE OR LESS 0.5 * C

EXAMINATION OF THE SHELLFISH BY TASTING WHERE THE PRESENCE OF ONE OF = THESE=20 SUBSTANCES IS PRESUMED

QUARTERLY

MONTHLY

MONTHLY , WITH A MINIMUM OF ONE SAMPLE REPRESENTATIVE OF LOW OXYGEN=20 CONDITIONS ON THE DAY OF SAMPLING . HOWEVER , WHERE MAJOR DAILY = VARIATIONS ARE=20 SUSPECTED , A MINIMUM OF TWO SAMPLES IN ONE DAY SHALL BE TAKEN

QUARTERLY

HALF-YEARLY

QUARTERLY

ABBREVIATIONS :

G =C3=80 GUIDE

I =C3=80 MANDATORY

( 1 ) HOWEVER , PENDING THE ADOPTION OF A DIRECTIVE ON THE PROTECTION = OF=20 CONSUMERS OF SHELLFISH PRODUCTS , IT IS ESSENTIAL THAT THIS VALUE BE = OBSERVED IN=20 WATERS IN WHICH LIVE SHELLFISH DIRECTLY EDIBLE BY MAN .