AG-3C78-S-17-0034_Changes_to_Solicitation_Documents.pdf

JULY 27, 2017 SOLICITATION: AG-3C78-S-17-0034

BISMARCK PMC IRRIGATION PIPELINE AND PUMP SYSTEM

SUMMARY OF CHANGES TO SOLICITATION

SUMMARY OF CHANGES TO SOILICITATION DOCUMENTS

PROJECT DRAWINGS

• Drawing Sheet 1 o Quantities table updated to reflect the optional use of HDPE 4710 pipe

• Drawing Sheet 23 o Section B-B updated to reflect the optional use of HDPE 4710 pipe

• Drawing Sheet 24 o Pumpout Drain Detail updated to reflect the optional use of HDPE 4710 pipe o Drain Detail updated to reflect the optional use of HDPE 4710 pipe o Trench detail added to reflect the option of using select fill for initial backfill of pipe trench o Fittings table updated to reflect the optional use of HDPE 4710 pipe

PROJECT SPECIFICATIONS

• Table of Contents updated to reflect the changes to project specifications

• Construction Specification 2 – Clearing and Grubbing o Section 7.a Item 2 updated to note that clearing of easements and county right-of-ways not required if pipe is installed by means of directional drilling/boring.

Item 3 added to identify the requirements for the tree count that will be used to determine the tree planting in East Sibley Nature Park Item 7 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 3 – Structure Removal o Section 7.a

Item 7 updated to reflect that some work is subsidiary to Bid Item 2 – Improvements to Existing Irrigation Pipeline

• Construction Specification 5 – Pollution Control o Section 8.a

Item 13 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 6 – Seeding, Sprigging, and Mulching o Section7.1.b Item 2 updated to identify the limits of which trees would be counted in determining the new tree planting rate

• Construction Specification 7 – Construction Surveys o Section 9.a Item 9 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 8 – Mobilization and Demobilization o Section 4.a

SUMMARY OF CHANGES TO SOLICITATION

Item 2 added to reflect the two construction periods identified in the bid schedule as separate options. This item details the items of work to be performed for each option.

• Construction Specification 9 – Traffic Control o Section 7.a

Item 5 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 11 – Removal of Water o Section 8.a Item 3 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 21 – Excavation o Section 10.a

Item 5 added to note that excavations performed in support of HDD operations are subject to the general requirements of this specification

Item 11 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 45 – Plastic Pipe o Section 14.a Bid items updated to reflect the name changes to Bid Items 3 and 4 Item 2 added to allow for horizontal directional drilling and the use of HDPE pipe Item 5.a.5 updated to eliminate the suction head requirement of the portable pump. Requirement now states that the pump shall be capable of effectively evacuating water from the pipeline.

Item 10 updated to reflect the use of horizontal directional drilling Item 11 updated to allow for select fill (3/8” minus rounded pea gravel) to be used as initial backfill for the backfill of the pipeline trench. This negates the need for hand compaction of initial backfill with native soils.

Item 17 updated to clarify restriction on water availability during irrigation season

Item 20 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 52 – Steel Pipe o Section 12.a Bid Item 5 removed and re-labeled Subsidiary Item – Steel Pipe; Bid Item 5 is identified in Construction Specification 401 Item 10 updated to reflect change to subsidiary item

• Construction Specification 54 – Boring and Jacking o Section 11.a

Item 2 updated to allow for horizontal directional drilling Item 5 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 93 – Identification Markers or Plaques o Section 6.a

Item 9 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 94 – Contractor Quality Control

SUMMARY OF CHANGES TO SOLICITATION

o Section 10.a Item 4 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 401 – Reinforced Precast Concrete Manholes o Section 11.a

Item 5 updated to note that Subsidiary Item – Steel Pipe is subsidiary to Bid Item 5 – Installation of Inlet Structure

• Construction Specification 403 – Valves and Meters o Section 10.a

Item 3 updated to reflect name changes to Bid Items 3 and 4

• Construction Specification 405 – Horizontal Directional Drilling o Specification added to allow for horizontal direction drilling of PVC or HDPE pipe. HDD shall be allowed for typical installation and for areas designated to not allow open trench excavation (road crossings, access, ramps, driveways, etc.)

PROJECT BID SCHEDULE

• Bid Item 3 name changed to Installation of Irrigation Mainline – 14” Plastic Pipe

• Bid Item 3.a name changed to Installation Beneath Crossings

• Bid Item 3.b name changed to Typical Installation

• Bid Item 4 name changed to Installation of Irrigation Mainline – 16” Plastic Pipe

• Bid Item 4.a name changed to Typical Installation

• Bid Schedule is now given as two options.

o Option 1 reflects a construction period of the Award Date – December 15, 2017.

o Option 2 reflects a construction period of the Award Date – October 31, 2018.