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the CONTRACTOR shall IMMEDIATELY CEASE dredging activities, notify the COUNTY and repeat the sampling and analyses until the turbidity has returned to acceptable levels. Dredging operations may not resume until the Compliance turbidity sample has returned to an acceptable level <, All reporting to the Florida DEP shall be conducted by the COUNTY. The CONTRACTOR shall be liable for any non-compliance within the conditions of the permits and terms of this contract attributable to their personnel or subcontractors. 13 . 1 . 1 . 5 Quality Control . All data shall be recorded in the Turbidity Monitoring Report as provided in Appendix F of these Technical Specifications. The nephelometer shall be field calibrated immediately prior to each sampling event and recalibrated every thirty (30) minutes during each sampling ran. The time of each calibration shall be recorded on the Turbidity Monitoring Report. The CONTRACTOR shall provide the COUNTY with a duplicate of the standard used to calibrate the nephelometer. The CONTRACTOR' S authorized technician shall attest to the accuracy of the reported data, testing equipment and procedure by signing and dating the Turbidity Monitoring Report. The COUNTY .I '. ,_; may direct that additional tests be performed at the CONTRACTOR' S own expense. The CONTRACTOR shall provide suitable transportation to and from the nearest public dock as requested by COUNTY staff or the ENGINEER to monitor the collection and analysis of turbidity samples as well as to collect and analyze comparative samples using the COUNTY ' s equipment. All monitoring shall be conducted in accordance with the CONTRACTOR' S Quality Assurance Plan. 13 . 1 .2 Construction Stake Recovery. The CONTRACTOR shall propose, for inclusion in the Monitoring Plan, a method for inventorying and ensuring the removal of all construction stakes (in their entirety) . The CONTRACTOR shall record all stakes deployed and removed on a daily basis on a Construction Stake Inventory. The Construction Stake Inventory shall be submitted to the COUNTY with the Contractor' s Daily Quality Control Report. The CONTRACTOR shall be responsible for using a magnetometer or other suitable means if necessary to locate and remove all construction stakes at no additional expense to the COUNTY. 13 . 1 .3 Topographic Profile Surveys . The CONTRACTOR shall be responsible for Pre- and Post-Construction beach profile surveys between DEP reference monuments R-4 through T- 17, R-97 through R- 108, and all intermediate ( 1 /2 station) reference monuments as specified in Section 34 of these Technical Specifications and in TECHNICAL AND ENVIRONMENTAL SPECIFICATIONS _ TS- 11