4-27-054 IFB Adm 1 - Posted.pdf

INVITATION FOR BIDS

NO. 27-054

HARFORD COMMUNITY COLLEGE STREAM RESTORATION

ADDENDUM NO. 1

September 8, 2026

Ladies and Gentlemen:

The purpose of this addendum is to provide clarification(s) to all prospective bidders.

The following questions were received prior to the due date and time.

Question #1: Where would this asphalt patching need to occur? Potentially at the construction entrances?

Answer #1: Asphalt patching will be required at the SCEs and potentially on the roadways within the Community College if the truck traffic causes any damage.

Question #2: The table for the riffle weirs provides a tonnage for the amount of imbricated needed to build the sills. based on the dimensions of the sills and the size imbricated specified, the tonnages are incorrect. Can the table be updated to provide accurate quantities?

Example: RW-01 table provides a width of 20', plans also show 20'.

Based on the dimensions of the smallest imbricated rip rap: 20' L x 2' W x 2' H (detail calls for double stacked so 2 1' H rocks) = 80 CF. Min CF weight of imbricated 165 LB / CF. 80 x 165 = 13,200 LB / 2000 = 6.6 Ton.

Using the largest size from the imbricated table: 20' L x 3' W x 4' H (detail calls for double stacked so 2 2' H rocks) = 240 CF. Min CF weight of imbricated 165 LB / CF.

240 x 165 = 39,600 LB / 2000 = 19.8 Ton.

Answer #2: The quantity on the table only accounts for half the depth. The bid quantity will be updated. Please see the attached revised bid table dated September 8, 2026.

Question #3: Running the avg size imbricated totals, 12.4 Tons needed for RW-01 which is half the quantity the table is providing.

Answer #3: The quantity on the table only accounts for half the depth. The bid quantity will be updated. Please see the attached revised bid table dated September 8, 2026.

Question #4: We understand this is a unit price item, but when half the quantity is missing from the bid item, it makes pricing this accurately difficult.

Answer #4: The bid table will be updated. Please see the attached revised bid table dated September 8, 2026.

Question #5: There are 110 trees called out for removal on the project, additionally the Forest Conservation plans are calling out an area of 118,472 SF for clearing. Should contractors assume removal of all vegetation within this 118,472 SF?

Answer #5: Yes, all vegetation within the Limit of Disturbance should be removed. The area within the Limit of Planting should not be removed.

Question #6: Description says that this pay item is for furnishing and placing 4" of topsoil where finish grade is less than 4:1 (flatter than 4:1). Is this suppose to say greater than 4:1? Most of the project has grading that is greater/steeper than 4:1; most slopes are 3:1 and 2:1 on the plans. Bid quantity seems to reflect this as well.

Answer #6: Topsoil is not slope dependent and this has been adjusted in the item description. Two inches of topsoil is only proposed in the area under the matting within the riffle weir detail. The remaining projects shall receive Four inches of topsoil.

Question #7: Description says that this pay item is for furnishing and placing 2" of topsoil where finish grade is 4:1 or greater. Is this suppose to say 4:1 or less? Most of the project has grading that is greater/steeper than 4:1; most slopes are 3:1 and 2:1 on the plans, yet the bid quantity is on 264 SY.

Answer #7: Topsoil is not slope dependent and this has been adjusted in the item description. 2-inches of topsoil is only proposed in the area under the matting within the riffle weir detail. The remaining projects shall receive 4-inches of topsoil.

Question #8: Is all topsoil replacement for this project to be paid under bid items 7110 & 7120? Both of these items are for furnishing new topsoil; the special provisions for each item says to use salvaged topsoil for replacement prior to furnishing new, but there is no bid item for replacement of salvaged topsoil.

Answer #8: For ease it is assumed that all topsoil will need to be furnished and no suitable topsoil will be found on site. If suitable topsoil is found on site the contractor can coordinate with the engineer-in-charge to evaluate its suitability for placement.

Question #9: Can a detail for Typical Reach Section 4 be provided? Sheets 22 & 23 provide them for Reach 1-3, but nothing for 4.

Answer #9: A typical cross section for reach 4 is located on the riffle weir stream details. A separate Typical Reach section will not be provided.

Question #10: The Riffle Weir Dimension Table provides a CY quantity for the riffle mixes required for each structure. The quantity provided does not match what is shown on plan view and also does not match the dimensions provided in the table. Example RW-01 plan view shows 193 SF for the Riffle at 18"D (10.72 CY) and 59 SF for the Run at 9" D (1.64 CY) 12.36 CY total based on the plan view. Dimension Table for RW-01 provides the Riffle dimensions at 16.89' x 20' = 337.8 SF at 18" D (18.77 CY) and no dimensions provided for the Run, so assuming the plan view quantity of 1.64 CY. Total quantity should be 20.41 CY. Quantity actually provided in the table 5.8 CY.

Answer #10: The quantity was calculated using the total area of the stone on the plan view at 18-inches. This accounts for more depth than is required for all areas to account for any areas like the run that are not shown on the plan view. The quantity for RW-01 is a typo and should be 15.8 not 5.8. The quantity on the bid sheet is correct.

Question #11: Additionally, the length provided in the table for most of the riffle sections cannot be achieved when compared to the drawings. Examples RW-02 to RW- 06 provides a L measurement of over 16' for each of the riffle sections. Based on the plan view this would extend the riffle section of RW-03 through the pool and into the run section of RW-02 and this continues down the line.

Answer #11: The length in the table accounts for the total riffle weir and run length and matches the profiles. This will be clarified with a field change to the winning contractor.

Question #12: Can direction be provided on how contractors are to price these when nothing lines up between the plans and the details/tables? Can the structures tables be updated? The profiles are also not lining up with what the details are showing.

Answer #12: The bid sheet with the updated quantity for imbricated stone has is being provided. The length in the table accounts for the total riffle weir and run length and matches the profiles. Any additional questions will be clarified with a field change to the winning contractor.

Question #13: When trying to submit a bid, the bid table is listed twice, 1.1.2 & 1.1.3.

Should 1.1.2 be changed to the bid bond? This is how it is under the Harford Community College Stream Restoration bid that is currently posted as well.

Answer #13: The correction has been made. We will require the bid affidavit, bid table, and a bid bond at time of bid submission.

Question #14: Could you please have the Harford Community College and Taylor Creek Stream Restoration pre-bid meetings back-to-back instead of at 9 AM and 1 PM?

Most contractors attending one will most likely attend the other.

Answer #14: No. Meeting dates/times are set based on County and design staff availability.

Question #15: When can the bidder expect to be awarded the project? When would the notice to proceed realistically happen? If this is too close to the closure period to finish all in stream work; would the county allow the contractor to wait until June 2027 to start?

Answer #15: The intent is to go to Board of Estimates quickly after bid opening so that contracts and NTP can be issued as quickly as possible. We anticipate construction beginning in Fall 2026 with completion by the closure date. Please staff and price accordingly. If the stream work cannot be fully completed, a partial shutdown or work around would need to be proposed to bridge the stream closure window. We do not anticipate waiving the closure at this time. This schedule allows for a Spring 2027 planting window, if needed.

Question #16: When is the anticipated Notice to Proceed?

Answer #16: Fall 2026

Question #17: Are the costs for third party inspections (geo-tech etc...) held by the County?

Answer #17: The contractor is required to provide material tickets (measurements) and certifying inspections, including E&S and turbidity monitoring for the contractor-held NOI. The County provides construction management and other construction phase services.

Question #18: Is there an MOT plan for this project that could be made available?

Answer #18: No MOT plan is provided for this project. The contractor should prepare an MOT plan for approval by the engineer-in-charge.

Please see the attached REVISED Special Provisions pages SP-61 and SP-62 dated September 8, 2026.

Please see the attached REVISED Bid Table dated September 8, 2026.

Please see the updated Design Plans (separate file) uploaded into the eProcurement platform.

Sincerely, Karen Post NIGP-CPP, CPPB, CPPO, CMPA Procurement Agent III cc: Danielle Hankins - DPW

Lindsey Snyder - DPW

Harford Community College Stream Restoration SP-61

Hammer or drive in wooden stakes perpendicular to the soil grade and 3-inches typical above the surface of the matting at the specified spacing intervals as indicated.

Install wood stakes at the specified spacing as follows and as directed in the Contract Documents. Rows of stakes shall be spaced 24” apart. On slopes 2:1 or steeper, stakes shall be installed 3-foot on center. On slopes 3:1 or gentler, stakes will be installed 4-foot on center. At edges of matting that overlap, at the uppermost edges and edges nearest the channel toe, wood stake spacing will be a minimum 24”. The leading edge of matting at the tie in will be spaced at 12”.

AREA OF MATTING

MAXIMUM DISTANCE

BETWEEN

FASTENERS or

DISTANCE TO EDGE

(In.)

Leading Edge of Matting 12 Overlapping, Toe, and Uppermost Edges of Matting 24

Spacing between rows 24 Spacing along rows not at a matting edge. 48

Additional stakes are to be placed at the direction of the Engineer to secure loose matting or areas of matting not in firm contact with underlying soils.

MEASUREMENT AND PAYMENT

Type D Soil stabilization matting will be measured and paid for at the Contract unit price per square yard. The payment will be full compensation for all material, fasteners, water, labor, equipment, tools, disposal fees and incidentals necessary to complete the work.

The measurement will be the area actually covered by matting, per square yard. Payment for Meadow Establishment or other specified vegetation will be measured and paid for separately.

END OF SECTION

ITEM 7110: PLACING FURNISHED TOPSOIL - 2” DEPTH

DESCRIPTION

The Contractor shall furnish and place topsoil to a depth of 2 inches according to the

Revised September 8, 2026

Harford Community College Stream Restoration SP-62 contract documents and associated with Item 3150- Riffle Weir construction. . The Contractor shall use salvaged topsoil prior to using furnished topsoil. This item shall be in accordance with Section 701 of the Maryland Department of Transportation, State Highway Administration’s Standard Specifications for Construction and Materials, and as described on the Contract Documents.

MATERIALS

Furnished topsoil shall meet the requirements as defined in Section 920.01.02 of the Standard Specifications.

MEASUREMENT AND PAYMENT

Placing Furnished Topsoil – 2” Depth will be measured and paid for at the Contract unit price per square yard placed. The payment will be full compensation for all material, testing, certification, labor, equipment, tools, and incidentals necessary to complete the work.

END OF SECTION

ITEM 7120: PLACING FURNISHED TOPSOIL - 4” DEPTH

DESCRIPTION

The Contractor shall furnish and place topsoil to a depth of 4 inches throughout areas that have been disturbed and require permanent seeding.. The Contractor shall use salvaged topsoil prior to using furnished topsoil. This item shall be in accordance with Section 701 of the Maryland Department of Transportation, State Highway Administration’s Standard Specifications for Construction and Materials, and as described on the Contract Documents.

MATERIALS

Furnished topsoil shall meet the requirements as defined in Section 920.01.02 of the Standard Specifications.

MEASUREMENT AND PAYMENT

Placing Furnished Topsoil – 4” Depth will be measured and paid for at the Contract unit price per square yard placed. The payment will be full compensation for all material, testing, certification, labor, equipment, tools, and incidentals necessary to complete the work.

END OF SECTION

ITEM DESCRIPTION OF ITEM UNIT QUANTITY UNIT COST TOTAL PRICE

1010 Mobilization LS 1 $ $

1020 Construction Stakeout LS 1 $ $

1030 Clearing and Grubbing LS 1 $ $

1040 Maintenance of Traffic LS 1 $ $

1050 Temporary Orange Construction Fence LF 3,670 $ $

1060 As-Built Drawings of Stream Restoration LS 1 $ $

2010 Unlassified Excavation CY 5,966 $ $

3010 Stabilized Construction Entrance EA 2 $ $

3020 Maintenance of Stream Flow LS 1 $ $

3030 Super Silt Fence LF 355 $ $

3040 Temporary Access Bridge EA 3 $ $

3050 Log Vane LF 506 $ $

3060 Channel Log LF 20 $ $

3070 Lof Riffle Grade Control LF 672 $ $

3080 Imbricated Riprap for Riffle Weir TON 186 $ $

3090 Temporary Mulch Access Road SY 1,427 $ $

3100 Temporary Timber Matting SY 2,443 $ $

BID NO. 27-054

HARFORD COMMUNITY COLLEGE STREAM RESTORATION

BT-1 27-054 Harford Community College Stream RestorationRevised September 8, 2026

3110 Clay Channel Barrier CY 14 $ $

3112 Rmove and Reset Existing Fence LF 96 $ $

5010 Contingent Hot Mix Asphalt Patch TON 50 $ $

7010 #7 Container Tree Installation and Establishement EA 592 $ $

7020 #3 Container Tree and Shrub Installation and Establishment EA 596 $ $

7030 #2 Container Shrub Installation and Establishment EA 112 $ $

7040 1 Qt Herbaceous, Grass, and Sedge Installation and Establishment EA 798 $ $

7050 3' Live Stake Installation and Establishment EA 1,028 $ $

7060 Wet Meadow Seed Mix Establishment SY 4,978 $ $

7070 Upland Meadow Seed Mix Establishment SY 10,773 $ $

7080 Turfgrass Establishment SY 4,815 $ $

7090 Supplemental Watering GAL 20,136 $ $

7100 Type D Soil Stabilization Matting SY 9,742 $ $

7110 Placing Furnished Topsoil - 2" Depth SY 264 $ $

7120 Placing Furnished Topsoil - 4" Depth SY 9,360 $ $

7130 Temporary Straw Mulch SY 9,742 $ $

7140 Temporary Seed SY 2,436 $ $

7150 Deer Protection - Tree Sleeves with 6" White Oak Stake EA 336 $ $

BT-2 27-054 Harford Community College Stream RestorationRevised September 8, 2026

7160 Deer Protection - Wire Cage with 6" White Oak Stake EA 141 $ $

7170 Deer Protection - Mini Clump Wire Fencing with T-Posts EA 14 $ $

7180 Deer Protection - Shrub Clump Wire Fencing with T-Posts EA 67 $ $

7190 Tree Root Pruning LF 2,966 $ $

7200 Tree Branch Pruning LS 1 $ $

7210 Specimen Tree Protection Sign EA 12 $ $

7220 Forest Conservation Area Sign EA 51 $ $

7230 Tree Protection Planking EA 15 $ $

7240 Vegetation Management Crew HR 56 $ $

7250 Contingent Tree Felling (6"-12") EA 1 $ $

7260 Contingent Tree Felling (13"-24") EA 8 $ $

7270 Contingent Tree Felling (>24") EA 4 $ $

9010 Class 0 Riprap CY 70 $ $

9020 Class I Riprap CY 214 $ $

9030 Class II Riprap CY 150 $ $

9040 Contingent Furnished Natural Channel Material CY 625 $ $

BT-3 27-054 Harford Community College Stream Restoration