Addendum #2.pdf

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ADDENDA

EAST SHADE SHELTER SHORELINE STABILIZATION PROJECT

Cherry Creek Basin Water Quality Authority P.O. Box 3166

Centennial, Colorado 80161

Addendum No.: 2

Addendum Date: October 10, 2024

The following revisions will be incorporated into the CONTRACT DOCUMENTS, for the above-referenced

PROJECT:

A. Revisions to Section 00 73 00 SUPPLEMENTARY CONDITIONS Section 17) Revisions to Section 01 29 00 Payment procedures

REVISION OF SECTION 31 23 19

DEWATERING

Section 31 23 19 of the Standard Specifications is hereby revised for this project to include the following:

The work consists of controlling surface water during construction, including prevention of sediment and standing water from escaping its existing confines.

3.02 CONSTRUCTION

CONTRACTOR shall use water control/sediment barrier for the work area during placement of the riprap. Methods shall be determined by the contractor and discussed prior to construction.

BASIS OF PAYMENT

Section 01 29 00 Payment Procedures shall be amended to include the following:

Payment will be made under:

Bid Item Pay Unit Water Control LS

The Contractor shall submit a schedule of Water Control two weeks before the drainage work begins. The schedule shall indicate the time for each work item that requires Water Control effort and the total time for the project.

Payment under this item includes multiple mobilizations if deemed necessary based on the Contractor’s construction schedule.

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REVISION OF SECTION 32 31 00

FENCES

Section 32 31 00 of the Standard Specifications is hereby revised for this project to include the following:

2.01 MATERIALS

Signage: Wayfinding and education signs shall be on ¾” minimum cedar wood (or approved equivalent) with machined lettering. Signs shall be coated, or weather treated using sign manufacturers recommendation. Posts of the massive rail fence shall be used to mount the signs. Colorado Parks and Wildlife or CCBWQA representatives shall approve alternative wood materials, colors, font size, lettering style etc. in a proof submittal.

3.02 CONSTRUCTION OR REPLACEMENT OF EXISTING FENCE

CONTRACTOR shall acquire and install wayfinding and educational signage in order to direct civilian pedestrian traffic to formal shoreline access paths post-project. Signs should be installed four feet above the ground surface and attached to posts such that the signs will remain upright under normally anticipated traffic and weather conditions. Prior to signage machining, a proof must be provided to Colorado Parks and Wildlife for review

BASIS OF PAYMENT

Section 01 29 00 Payment Procedures shall be amended to include the following:

Payment will be made under:

Pay Item Pay Unit Wayfinding and Educational Signage EA

B. Overview of Schedule

Question Deadline – October 4, 2024

Bid Intent Deadline October 16, 2024 (Submitted online via Bidnet)

Bids Due October 18, 2024 (Submitted online via Bidnet)

Bid Publishing by Tuesday October 22, 2024, 5:00 pm on Bidnet

Note: No bid opening is anticipated.

C. Questions/Responses

1. On Sheet C3 there is a note at Station 40+54 that states End Staircase A. The graphics do not show the staircase ending at that station. The Profile shows it ending it at 40+43.90. Are we extending the staircase to station 40+54 which appears to be in the water?

The note at station 40+54 is to indicate the end of the alignment for construction staking purposes. The end of “Staircase A” will be constructed as planned, in the profile view, ending at station 40+43.90.

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2. Sheet D2- Riprap edge detail calls for type M which has an average size of 12”. The note states 12” depth with riprap between 4”-8”. Is the size 4”-8” the size of the riprap and if so, can we use type VL which is closer to that size?

The Type M riprap has an average size of 12”, but the note states the riprap shall be uniformly graded to increase the distribution to lean heavily towards only 12” rocks. 4”-8” is to indicate the depth of embedment of the riprap. Please use Type M Riprap.

3. Is the shaded riprap soil loaded VH? It is hard to tell by the key and it is not noted on the plans.

The shaded riprap is specified in the Joint Planting detail (sheet D-3) and indicated to be Type H Soil

Riprap.

4. Is the excavation for the rip rap paid for under unclassified ex, and will that item be paid as a unit price or lump sum?

The excavation required for all rock was included as unclassified excavation and is paid for as CY.

5. What scope of work is the 10cy Subgrade Prep for?

This is for the compaction work required for the subgrade beneath crusher fines as called out in sheets D-

1 through D-3.

6. In the addendum it was stated the boulders are MHFD specs. The steps are still sandstone, correct?

The detail on sheet L4.2 does indicate a sandstone base slab; the detail has been revised in Addendum #2 to clearly show all steps as sandstone material.

7. Detail shows a two-tier wall. I could not find a two-tier wall on the plans. Is the intent that the LF bid item two tiers of 24” boulders?

The number of tiers of boulders theoretically will be dictated by the top of wall and bottom of wall elevations relative to boulder size, however, it was simply assumed that two tiers would be used in all instances to be more structurally sound and help prevent undercutting. The LF of boulder bulkhead represents two tiers of boulders.

8. Specifications calls for an office for the client and contractor, just want to verify that this is needed in the bid.

An office will not be required.

9. The specs call for traffic control plan and installation. Is this for vehicular as well. Ther is a bid item for pedestrian control but not vehicle control. Where should we put that cost?

A Traffic control plan for vehicles is not required, however the contractor shall insure safe entry and exit from the work area. It is anticipated that the East Shade Shelter parking lot will be closed for the duration of construction.

10. What type of rock is the fieldstone.

Detail on sheet D-2 calls out fieldstone to be Type L Riprap.

11. The fieldstone is within the water, since there is not a dewatering bid item, where should we put that cost?

Contractor shall use water control/sediment barrier for the work area during placement of the riprap. This has been included as a lump sum bid item in the bid tab; methods shall be determined by the contractor and discussed prior to construction. See revisions to Section 01 29 00 payment procedures for this work in this Addendum #2.

12. The addendum states that there is a Bid Intent Deadline. Is there a special form and are you wanting an email stating we are bidding it?

Bid intent needs to be submitted on Bidnet.

13. Are Holcim Boulders allowed?

Holcim Boulders are allowed if they meet the MHFD specifications for Boulders.

14. Are the wayfinding and education signs to be provided by others?

No, the signs will need to be acquired by the contractor and installed. Prior to finalizing signage, a proof should be provided for review. See revision to Section 01 29 00 payment procedures within this

Addendum #2.

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D. Additional Attachments/Revisions

i. Revised Section 00 41 43 Unit Price Bid Schedule

ii. Revision to Staircase Detail L4.2

The BID date is/remains October 18, 2024, 10:00 a.m., MST/MDT

All other terms and conditions of the CONTRACT DOCUMENTS will remain unchanged. BIDDER must acknowledge receipt of this ADDENDUM in the space provided in the BID. Failure to acknowledge receipt of an ADDENDUM may be cause for rejection of the BID.

END OF SECTION

00 41 43

UNIT PRICE BID SCHEDULE

Bid Item

Description Total Qty

Unit Unit Price Total Cost

1 Clearing & Grubbing 1 LS

2 Water Control 1 LS

3 Remove Tree 8 EA

4 Remove Landscape Fabric 100 SY

5 Remove Riprap 3 CY

6 Unclassified Excavation w/Fill on Site 347 CY

7 Subgrade Preparation 10 CY

8 Landscape Grading 1.0 LS

9 North Staircase (Boulder) 1 LS

10 Temporary Irrigation 1 LS

Semi-Permanent Reveg Protection T-Post Fence WWF 224 LF

12 Live Willow Stakes 100 EA

13 Containerized Stock (Transplant Shrub) 50 EA

14 Stabilized Crusher Fines 4 CY

15 Riprap (9 inch) 60 CY

16 Riprap (12 inch) 16 CY

17 Riprap (18 inch) 258 CY

18 Boulder Bulkhead Wall 116 LF

19 Massive Rail Fence 254 LF

20 Wayfinding and Educational Signage 4 EA

21 Construction Surveying 1 LS

22 Mobilization 1 LS

23 Pedestrian Control 1 LS

24 Construction Fence 752 LF

25 Curb Sock 50 LF

26 Sediment Control Log 50 LF

27 Silt Fence 561 LF

28 Stabilized Staging Area 534 SY

29 Vehicle Tracking Control 1 EA

30 Tree Protection 335 LF

31 Erosion Control Blanket (Straw-Coconut) 816 SY

32 Seeding & Mulching (CPW Mix) 0.17 AC

Bid Total: ______________

TOTAL OF BASE BID: $_____________________________

(Numbers)

Dollars

(Words)

BIDDER STATES THAT:

1. MAJOR MATERIAL AND EQUIPMENT MATERIAL THEY WILL SUPPLY:

SUPPLIERS ARE:

2. MAJOR SUBCONTRACTORS ARE: WORK THEY WILL PERFORM:

ATTEST: CONTRACTOR:

By:

(Signature) Company Name (Print)

Name: By:

(Print) (Signature)

Name:

(Print)

Title:

Address:

Date:

END OF SECTION

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100% SUBMITTA

NOT FOR CONSTRUCTION

STAMP

BID SET

NOT FOR CONSTRUCTION

Jericho.Rapp Cloud

Jericho.Rapp Line

Jericho.Rapp Text Box

SANDSTONE SLABS