The Contractor shall ensure that all samplers, including sample bottles and pipelines, are cleaned regu- larly to avoid the formation of grease, solid material and bacterial growth. 

## Laboratory and Analytical Equipment 

The Contractor shall ensure that the laboratory and analytical equipment is kept in good condition. Analytical equipment shall be calibrated on a regular basis. 

## Analytical Methodology 

The Contractor shall also abide by the requirements of the Turkish Regulations with respect to analyti- cal methodology. 

In cases where there are no applicable Turkish regulations, the analysis of samples taken at the wastewater treatment plant shall be carried out in accordance with the most up to date edition of “Standard Methods for the Examination of Water and Wastewater” produced by The American Public Health Association (APHA); the American Water Works Association (AWWA) and the Water Envi- ronment Federation (WEF). 

## Monitoring Requirements 

For compliance purposes, the Contractor shall carry out sampling according to Table 11-1(a) and (b) given below. Sampling at the inlet and outlet shall be corresponding as regard time. 

## Independent Analysis 

Analyses for all parameters, specified in Table 11-1a or 11-1b (as the case may be) for the inlet and outlet, shall be carried out at the Plant’s Laboratory. All other analyses that cannot be carried out at plant’s laboratory and the analyses to be required by the Engineer due any reason shall be carried out by a recognized independent laboratory, approved by the Engineer. A portion of the sample sent for independent analysis shall be kept on site and analyzed as normal. The results shall then be compared. Any unusual variance between the results shall be brought to the attention of the Engineer for discus- sion. The Contractor shall make any necessary adjustments to his analytical procedures to ensure that any errors, considered to have occurred, are eliminated. 

## Remedy on Compliance Failure 

In the event of any failure to comply with the treated wastewater discharge standards, the Contractor shall inform the Engineer, in writing, immediately upon becoming aware of the failure. The Contractor shall provide details of the reasons for failure and the remedies that have been put into effect to ensure that the treatment plant can meet the standards. 

## Sampling by the Employer 

The Employer reserves the right to enter the wastewater treatment plant to take samples at any location and at any time without prior notice to the Contractor. 

## 11.4.3 Records of data 

Records of the continuous data measured at the station shall be kept at the wastewater treatment plant in electronic and hard copy formats and summary data shall be provided in the monthly report. 

