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<gmd:citation>          <gmd:CI_Citation>            <gmd:title>              <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">Zone vulnerabili ai nitrati di origine agricola</gco:CharacterString>            </gmd:title>            <gmd:date>              <gmd:CI_Date>                <gmd:date>                  <gco:Date xmlns:gco="http://www.isotc211.org/2005/gco">2024-02-12</gco:Date>                </gmd:date>                <gmd:dateType>                  <gmd:CI_DateTypeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>                </gmd:dateType>              </gmd:CI_Date>            </gmd:date>            <gmd:identifier>              <gmd:MD_Identifier>                <gmd:code>                  <gco:CharacterString 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<gmd:CI_Address>                        <gmd:electronicMailAddress>                          <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">tutela.acque@regione.piemonte.it</gco:CharacterString>                        </gmd:electronicMailAddress>                      </gmd:CI_Address>                    </gmd:address>                    <gmd:onlineResource>                      <gmd:CI_OnlineResource>                        <gmd:linkage>                          <gmd:URL>https://www.regione.piemonte.it/web/temi/ambiente-territorio</gmd:URL>                        </gmd:linkage>                        <gmd:protocol>                          <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">WWW:LINK-1.0-http--link</gco:CharacterString>                        </gmd:protocol>                        <gmd:name>                          <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">Sito web</gco:CharacterString>                        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codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#CI_PresentationFormCode" codeListValue="mapDigital">mapDigital</gmd:CI_PresentationFormCode>            </gmd:presentationForm>            <gmd:series>              <gmd:CI_Series>                <gmd:issueIdentification>                  <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">r_piemon:f0c7e45c-d8bc-42ad-af71-514fbf46b26d</gco:CharacterString>                </gmd:issueIdentification>              </gmd:CI_Series>            </gmd:series>            <gmd:otherCitationDetails xmlns:gco="http://www.isotc211.org/2005/gco" gco:nilReason="missing">              <gco:CharacterString/>            </gmd:otherCitationDetails>          </gmd:CI_Citation>        </gmd:citation>        <gmd:abstract>          <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">La Direttiva Nitrati 676/91/CE è il documento dell'Unione Europea che regolamenta l'eccesso di nitrati nelle acque superficiali e sotterranee a causa dell’attività agricola. Si tratta di uno strumento che impone precisi vincoli allo stoccaggio e alla distribuzione dei reflui zootecnici negli allevamenti e stabilisce i periodi durante i quali non è permesso distribuire letame o liquami. Ad esempio, in stagioni come l'inverno, in cui le culture non sono in fase di crescita attiva e le piogge potrebbero più facilmente trasportare i nitrati dal terreno verso i corsi d'acqua e le falde superficiali. I contenuti fondamentali della direttiva sono:- l'individuazione di Zone Vulnerabili da Nitrati di origine agricola (ZVN), nelle quali è introdotto il divieto di spargimento dei reflui degli allevamenti oltre un limite massimo annuo di 170 kg di azoto per ettaro;- la regolamentazione dell’utilizzazione agronomica dei reflui zootecnici, con definizione dei cosiddetti Programmi d’Azione: documenti che stabiliscono le modalità con cui possono essere effettuati gli spandimenti dei reflui.Con la DGR 21-551 del 22/11/2019 viene modificato il regolamento 12/R/2007 designando nuove Zone vulnerabili ai nitrati di origine agricola con riferimento alle acque sotterranee. Con la DGR 20-946 del 24/01/2020 viene nuovamente modificato il regolamento 12/R/2007 designando nuove Zone vulnerabili ai nitrati di origine agricola con riferimento al bacino idrografico del torrente Tiglione.Tali deliberazioni sono vincolanti al fine di chiudere positivamente per il Piemonte la Procedura di Infrazione 2018/2249 con la quale l’Italia è stata messa in mora per insufficiente applicazione della direttiva 676/91/CE.Con la DGR 27-7198 del 13/07/2023: "Disposizioni di attuazione del Piano di tutela delle acque (D.C.R. n. 179 - 18293, del 2 novembre 2021). Riesame e conferma delle zone vulnerabili ai nitrati di origine agricola ai sensi dell'art. 92 del decreto legislativo 3 aprile 2006 n. 152 e dell'art. 16 del Piano di tutela delle Acque", viene recepito l’aggiornamento delle basi dati territoriali, relativamente alla riperimetrazione delle fasce A e B dei fiumi piemontesi con riferimento alla loro designazione come zone vulnerabili ainitrati di origine agricola. 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    <gmd:MD_RepresentativeFraction>                <gmd:denominator>                  <gco:Integer xmlns:gco="http://www.isotc211.org/2005/gco">2000</gco:Integer>                </gmd:denominator>              </gmd:MD_RepresentativeFraction>            </gmd:equivalentScale>          </gmd:MD_Resolution>        </gmd:spatialResolution>        <gmd:language>          <gmd:LanguageCode codeList="http://www.loc.gov/standards/iso639-2/" codeListValue="ita">ita</gmd:LanguageCode>        </gmd:language>        <gmd:characterSet>          <gmd:MD_CharacterSetCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#MD_CharacterSetCode" codeListValue="utf8">utf8</gmd:MD_CharacterSetCode>        </gmd:characterSet>        <gmd:topicCategory>          <gmd:MD_TopicCategoryCode>environment</gmd:MD_TopicCategoryCode>        </gmd:topicCategory>        <gmd:extent>          <gmd:EX_Extent>            <gmd:temporalElement>              <gmd:EX_TemporalExtent>                <gmd:extent>                  <gml:TimePeriod xmlns:gml="http://www.opengis.net/gml/3.2" gml:id="d52544e433a1050910">                    <gml:beginPosition>2002-10-18</gml:beginPosition>                    <gml:endPosition>2100-12-31</gml:endPosition>                  </gml:TimePeriod>                </gmd:extent>              </gmd:EX_TemporalExtent>            </gmd:temporalElement>          </gmd:EX_Extent>        </gmd:extent>        <gmd:extent>          <gmd:EX_Extent>            <gmd:geographicElement>              <gmd:EX_GeographicBoundingBox>                <gmd:westBoundLongitude>                  <gco:Decimal xmlns:gco="http://www.isotc211.org/2005/gco">6.62</gco:Decimal>                </gmd:westBoundLongitude>                <gmd:eastBoundLongitude>                  <gco:Decimal xmlns:gco="http://www.isotc211.org/2005/gco">9.21</gco:Decimal>                </gmd:eastBoundLongitude>                <gmd:southBoundLatitude>                  <gco:Decimal xmlns:gco="http://www.isotc211.org/2005/gco">44.06</gco:Decimal>                </gmd:southBoundLatitude>                <gmd:northBoundLatitude>                  <gco:Decimal xmlns:gco="http://www.isotc211.org/2005/gco">46.46</gco:Decimal>                </gmd:northBoundLatitude>              </gmd:EX_GeographicBoundingBox>            </gmd:geographicElement>          </gmd:EX_Extent>        </gmd:extent>        <gmd:supplementalInformation xmlns:gco="http://www.isotc211.org/2005/gco" gco:nilReason="missing">          <gco:CharacterString/>        </gmd:supplementalInformation>      </gmd:MD_DataIdentification>    </gmd:identificationInfo>    <gmd:distributionInfo>      <gmd:MD_Distribution>        <gmd:distributionFormat>          <gmd:MD_Format>            <gmd:name>              <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">ESRI Shape</gco:CharacterString>            </gmd:name>            <gmd:version xmlns:gco="http://www.isotc211.org/2005/gco" gco:nilReason="">              <gco:CharacterString>ESRI Shapefile</gco:CharacterString>            </gmd:version>          </gmd:MD_Format>        </gmd:distributionFormat>        <gmd:distributor>          <gmd:MD_Distributor>            <gmd:distributorContact>              <gmd:CI_ResponsibleParty>                <gmd:organisationName>                  <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">Regione Piemonte - A1604C - Tutela e uso sostenibile delle acque</gco:CharacterString>                </gmd:organisationName>                <gmd:contactInfo>                  <gmd:CI_Contact>                    <gmd:phone>                      <gmd:CI_Telephone>                        <gmd:voice>                          <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">011 4321418</gco:CharacterString>                        </gmd:voice>                      </gmd:CI_Telephone>                    </gmd:phone>                    <gmd:address>                      <gmd:CI_Address>                        <gmd:electronicMailAddress>                          <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">tutela.acque@regione.piemonte.it</gco:CharacterString>                        </gmd:electronicMailAddress>                      </gmd:CI_Address>                    </gmd:address>                    <gmd:onlineResource>                      <gmd:CI_OnlineResource>                        <gmd:linkage>                          <gmd:URL>https://www.regione.piemonte.it/web/temi/ambiente-territorio/ambiente/acqua</gmd:URL>                        </gmd:linkage>                        <gmd:protocol>                          <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">WWW:LINK-1.0-http--link</gco:CharacterString>                        </gmd:protocol>                        <gmd:name>                          <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">Sito web</gco:CharacterString>                        </gmd:name>                        <gmd:description xmlns:gco="http://www.isotc211.org/2005/gco" gco:nilReason="missing">                          <gco:CharacterString/>                        </gmd:description>                      </gmd:CI_OnlineResource>                    </gmd:onlineResource>                  </gmd:CI_Contact>                </gmd:contactInfo>                <gmd:role>                  <gmd:CI_RoleCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#CI_RoleCode" codeListValue="distributor">distributor</gmd:CI_RoleCode>                </gmd:role>              </gmd:CI_ResponsibleParty>            </gmd:distributorContact>          </gmd:MD_Distributor>        </gmd:distributor>        <gmd:transferOptions>          <gmd:MD_DigitalTransferOptions>            <gmd:onLine>              <gmd:CI_OnlineResource>                <gmd:linkage>                  <gmd:URL>https://www.datigeo-piem-download.it/direct/Geoportale/RegionePiemonte/Ambiente/ZVN_Piemonte.zip</gmd:URL>                </gmd:linkage>                <gmd:protocol>                  <gmx:Anchor xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="https://registry.geodati.gov.it/metadata-codelist/ProtocolValue/www-download">WWW:DOWNLOAD-1.0-http--download</gmx:Anchor>                </gmd:protocol>                <gmd:applicationProfile>                  <gmx:Anchor xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://inspire.ec.europa.eu/metadata-codelist/SpatialDataServiceType/other">Altri servizi</gmx:Anchor>                </gmd:applicationProfile>                <gmd:name>                  <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">Zone vulnerabili ai nitrati di origine agricola (con il campo: Nome_ZVN, si indica il Regolamento o DGR che ha designato l'area)</gco:CharacterString>                </gmd:name>                <gmd:description>                  <gmx:Anchor xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://inspire.ec.europa.eu/metadata-codelist/OnLineDescriptionCode/accessPoint">access point</gmx:Anchor>                </gmd:description>              </gmd:CI_OnlineResource>            </gmd:onLine>          </gmd:MD_DigitalTransferOptions>        </gmd:transferOptions>        <gmd:transferOptions>          <gmd:MD_DigitalTransferOptions>            <gmd:onLine>              <gmd:CI_OnlineResource>                <gmd:linkage>                  <gmd:URL>https://geomap.reteunitaria.piemonte.it/ws/agrigeo/rp-01/zvnwms/wms_zvn?service=WMS&amp;version=1.3&amp;request=getCapabilities</gmd:URL>                </gmd:linkage>                <gmd:protocol>                  <gmx:Anchor xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.opengis.net/def/serviceType/ogc/wms">Web Map Service (WMS)</gmx:Anchor>                </gmd:protocol>                <gmd:applicationProfile>                  <gmx:Anchor xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://inspire.ec.europa.eu/metadata-codelist/SpatialDataServiceType/view">Servizio di consultazione</gmx:Anchor>                </gmd:applicationProfile>                <gmd:name xmlns:gco="http://www.isotc211.org/2005/gco" gco:nilReason="missing">                  <gco:CharacterString/>                </gmd:name>                <gmd:description>                  <gmx:Anchor xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://inspire.ec.europa.eu/metadata-codelist/OnLineDescriptionCode/accessPoint">access point</gmx:Anchor>                </gmd:description>              </gmd:CI_OnlineResource>            </gmd:onLine>          </gmd:MD_DigitalTransferOptions>        </gmd:transferOptions>      </gmd:MD_Distribution>    </gmd:distributionInfo>    <gmd:dataQualityInfo>      <gmd:DQ_DataQuality>        <gmd:scope>          <gmd:DQ_Scope>            <gmd:level>              <gmd:MD_ScopeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#MD_ScopeCode" codeListValue="dataset">dataset</gmd:MD_ScopeCode>            </gmd:level>          </gmd:DQ_Scope>        </gmd:scope>        <gmd:report>          <gmd:DQ_DomainConsistency>            <gmd:result>              <gmd:DQ_ConformanceResult>                <gmd:specification>                  <gmd:CI_Citation>                    <gmd:title>                      <gmx:Anchor xmlns:gmx="http://www.isotc211.org/2005/gmx" xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://data.europa.eu/eli/reg/2010/1089">REGOLAMENTO (UE) N. 1089/2010 DELLA COMMISSIONE del 23 novembre 2010 recante attuazione della direttiva 2007/2/CE del Parlamento europeo e del Consiglio per quanto riguarda l'interoperabilità dei set di dati territoriali e dei servizi di dati territoriali</gmx:Anchor>                    </gmd:title>                    <gmd:date>                      <gmd:CI_Date>                        <gmd:date>                          <gco:Date xmlns:gco="http://www.isotc211.org/2005/gco">2010-12-08</gco:Date>                        </gmd:date>                        <gmd:dateType>                          <gmd:CI_DateTypeCode codeList="http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/Codelist/ML_gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>                        </gmd:dateType>                      </gmd:CI_Date>                    </gmd:date>                  </gmd:CI_Citation>                </gmd:specification>                <gmd:explanation>                  <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">Fare riferimento alle specifiche indicate</gco:CharacterString>                </gmd:explanation>                <gmd:pass xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:gml="http://www.opengis.net/gml/3.2" xmlns:gco="http://www.isotc211.org/2005/gco" gco:nilReason="unknown"/>              </gmd:DQ_ConformanceResult>            </gmd:result>          </gmd:DQ_DomainConsistency>        </gmd:report>        <gmd:report>          <gmd:DQ_AbsoluteExternalPositionalAccuracy>            <gmd:result>              <gmd:DQ_QuantitativeResult>                <gmd:valueUnit>                  <gml:BaseUnit xmlns:gml="http://www.opengis.net/gml/3.2" gml:id="m">                    <gml:identifier codeSpace="http://www.bipm.org/en/si/base_units">m</gml:identifier>                    <gml:unitsSystem xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="http://www.bipm.org/en/si"/>                  </gml:BaseUnit>                </gmd:valueUnit>                <gmd:value>                  <gco:Record xmlns:gco="http://www.isotc211.org/2005/gco">                    <gco:Real>100</gco:Real>                  </gco:Record>                </gmd:value>              </gmd:DQ_QuantitativeResult>            </gmd:result>          </gmd:DQ_AbsoluteExternalPositionalAccuracy>        </gmd:report>        <gmd:lineage>          <gmd:LI_Lineage>            <gmd:statement>              <gco:CharacterString xmlns:gco="http://www.isotc211.org/2005/gco">La designazione delle zone vulnerabili ai nitrati di origine agricola in Piemonte è avvenuta in più fasi successive, con l'utilizzo di approcci metodologici differenziati, nel rispetto dei criteri stabiliti dalla direttiva 91676CEE del 12 dicembre 1991 e dalla normativa statale e regionale vigente in materia.Nel 2002 con il regolamento regionale 9R sono stati designati i territori sovrastanti i corpi idrici sotterranei che, nel biennio 2000-2001, risultavano avere una concentrazione media di nitrati uguale o superiore a 40 mgL . Con il Piano di Tutela delle Acque 2007 (art. 21, comma 5 delle Norme di Piano) sono stati designati i territori ricadenti all'interno delle fasce esondabili A e B dei corsi d'acqua, definite dal Piano stralcio per l'Assetto Idrogeologico (PAI), al fine di prevenire eventuali fenomeni di ruscellamento e contenere il trasporto di inquinanti, tra cui anche l'azoto, verso il corpo idrico superficiale. Le fasce fluviali di riferimento per la designazione attuale sono quelle aggiornate al 2011.Nel 2007 con il regolamento regionale 12R sono stati designati ulteriori territori, potenzialmente vulnerabili ai nitrati di origine agricola, tenendo conto dei seguenti parametri agro-ambientali: -la vulnerabilità intrinseca dell'acquifero superficiale-la capacità protettiva dei suoli-il valore del surplus di azotoNuove zone sono state designate con la DGR 21-551 del 22112019  e con la DGR 20-946 del 24012020 e nei rispettivi allegati tecnici sono specificati i criteri utilizzati per queste ulteriori designazioni.Le ZVN sono designate a livello di foglio di mappa catastale, quindi la scala è 1: 2000.Le ZVN sono riconfermate o riviste ogni 4 anni.</gco:CharacterString>            </gmd:statement>          </gmd:LI_Lineage>        </gmd:lineage>      </gmd:DQ_DataQuality>    </gmd:dataQualityInfo>  </gmd:MD_Metadata>