36 of 40 Construction of Giresun Wastewater Treatment Plant  Tender Dossier Volume 3 Employer’s Requirements  Section 04: General Requirements for the Execution and Completion of the Works  4.21.2.1  Treated Effluent Standards  4.21.2 Verification of treatment performance  4.21.2.2 Dewatered and Dried Sludge Quality Requirement  4_Vol3_d4.3_Section 4 General Requirements_en_GIR_rev6  The required dry solids content of the dewatered sludge and dried sludge to be fulfilled is stated in  Section 2.5.2 of the Employer's Requirements. The verification of this fulfillment shall be carried  out during the Defects Notification Period following the Employer's Taking Over in accordance  with the following procedures.  All of the testing for compliance referred to below shall be carried out by an accredited laboratory  which is to be approved by the Engineer.  Procedure  The treated wastewater shall be assumed to comply with the relevant parameters if, for each of the  relevant parameter considered individually, samples of the wastewater show that it complies with  the relevant parametric value in the following way:  A minimum of 48, flow-proportional 24-hour samples shall be collected at regular intervals for  each year from the effluent discharge main in order to monitor compliance with the requirements  for treated wastewater.  A minimum of 48, flow-proportional 24-hour samples shall be collected at regular intervals for  each year from the inlet to the treatment plant in order to assess the actual pollutant load.  All of the testing for compliance referred to below shall be carried out by an accredited laboratory  which is to be approved by the Engineer. The composite samples shall be taken by means of  sampling devices defined in Section 3.2.4. During the Defects Notification Period, the Engineer  shall monitor the treated effluent for compliance with the stated effluent standards stated in the  Volume 3: Employer's Requirements, Section 2.5.1 Table 2.4.  The required treated effluent quality to be fulfilled is stated in Volume 3: Employer's  Requirements, Section 2.5.1 of the Employer's Requirements. The verification of this fulfillment  shall be carried out during the Defects Notification Period following the Employer's Taking Over  in accordance with the following procedures.  Inlet  Outlet  Compliance criteria   For the parameters of BOD$_{5}$, COD and TSS; the maximum number of samples which fail  to conform is 3,   For the parameters of BOD$_{5}$, COD, and TSS, the failing samples taken under normal  operating conditions shall not deviate from the parametric values by more than 100  percent. For the parameter of TSS, deviations of up to 150 percent shall be accepted,   For the parameter of TN and TP, the annual mean of the samples for each parameter shall  conform to the relevant parametric values,   Extreme values for the wastewater quality shall not be taken into consideration when they  are the results of unusual situations such as heavy rain. 