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C-1 5. All elevations shown shall be based on 1929 NGVD, 6. All incoming as -built survey AUTOCADD drawing files shall be received on 3 1/2" diskette and in state plane coordinated. (MOTE: Prior to submitting the r 3 112" AUTOCADD diskette, three (3) copies of each survey shall be submitted for review and approval. After all approvals, a signed and sealed Mylar reproducible along with two (2) signed and sealed copies of each survey shall be submitted. 7. All as -built survey drawings shall be tied to a minimum of one permanent reference monuments (P.R.M.). Every 1400 feet if available and tied to a minimum of two section corners or one section corner and one 1f4 section corner which ever is closest to the project. 8. All as -built survey drawings shall be calculated in a Cogo package for future G.T.S. Information. The Cogo used shall meet the Cogo requirements set forth by the Department of Utility Services. 9. All as-builts surveys shall include a minimum of two (2) existing or established benchmarks for vertical control every 1,400 feet shown on all surveys. 10. Horizontal Control Monumentation (if required) for utility lines shall be a minimum of two (2) points at a maximum of 1,900 feet between points and shown on all surveys. 11. All utility as --built construction located within the right-of-ways, easements and alike shall be tied to the respective right-of-ways, easements, etc., every 1,000 feet and change of direction, 12. All utility as -built construction located within one mile of the Indian River County Global Positioning System (G.P.S.) control project shall be ties from that nearest G.P.S. point andinto the closest constuction site Permanent Reference Monument (P,R.M.), if available. This does not eliminate Item No. 7 above. 13. All as-builts shall clearly depict as -built utility lines that were constructed along with all easements. As -bunts will not be accepted unless 01720--4