RFP 20261014 Addendum 1 PER.pdf

Connie Gibson, Procurement Manager

1 Center Street Virginia Phone (434) 432-

Website:

www.pittsylvaniacountyva.gov

October 22, 2026

RE: RFP# 20261014

The following shall serve as Addendum #1. Please acknowledge receipt of this addendum when submitting your proposal.

1.

Sincerely, Connie Gibson

Procurement Manager

This addendum is issued to formally provide all prospective vendors/firms with the Preliminary Engineering

Report associated with the project. The report is being included to offer additional technical context, clarify existing project parameters, and support accurate preparation of proposals. No other terms, conditions, or specifications are changed by this addendum. See attachment.

http://www.pittsylvaniacountyva.gov/

PROJECT NO. 50188957

PRELIMINARY ENGINEERING

REPORT

Southern Virginia Multimodal Park – Membrane Filtration Plant

DECEMBER 2025

SUBMITTED BY

Dewberry Engineers Inc.

551 Piney Forest Road

Danville, VA 24540

SUBMITTED TO

Pittsylvania County

1 Center Street

Chatham, VA 24531

S V M P M E M B R A N E F I L T R A T I O N P L A N T P E R 1

Table of Contents C.1. Project Overview 2

C.2. Project Drawings 3

C.3. Construction Cost Estimate 7

C.4. Project Constraints 8

C.5. The Proposed Method of Construction Procurement 8

C.6. Number of Construction Contracts Anticipated 8

C.7. Project Permits 8

C.8. Project Schedule 9

S V M P M E M B R A N E F I L T R A T I O N P L A N T P E R 2

C.1. Project Overview

A 2017 preliminary engineering report (PER) was completed by Peed & Bortz, LLC, evaluating the ability to provide additional water and wastewater treatment, distribution, and collection capacity to the Southern Virginia Multimodal Park (SVMP). It was discovered the cost to provide additional water capacity to the Town of Hurt’s system, which contains the SVMP site, would come at a high cost. Given the high cost of expansion and transmission for the Town of Altavista to meet increased water demands for the park, the Town of Hurt and Pittsylvania County plans to recommission the existing water treatment plant adjacent to the Southern Virginia Multimodal Park (SVMP) to serve the park, and the Town of Hurts water customers. This water treatment plant once owned by Burlington Industries, is herein referred to as the

SVMP WTP.

Given the age and condition of the SVMP WTP conventional gravity sand filters, valving and controls, it is proposed that only the raw water intake, sedimentation process, and clearwell can be refurbished and recommissioned at a reasonable cost. In lieu of gravity filtration, a new membrane filtration process is proposed to be installed in a new pre-engineered metal building adjacent to the current plant.

Based on the above-forecasted capacity needs of the SVMP WTP, two skids of membranes are proposed with an initial maximum rated capacity of 0.500 MGD. Since the Virginia Waterworks Regulations require at least two membrane skids to meet full redundancy and the typical smallest nominal sized membrane skids are designed to accommodate membrane modules to provide up to 0.500 MGD filtration capacity, at least two skids will be provided. Space will be provided in the filtration building to allow for the addition of a third future membrane skid which will result in a total future rated capacity of 1.0 MGD. Given the relatively small savings associated with the purchase of fewer membrane modules for a single skid and considering the large additional operating cost associated with staffing the WTP for additional shifts of operation, this installation of two 0.500 MGD skids are proposed. This system, with two skids in service would allow the plant to meet all water production needs within a single operating shift. With the future addition of a third skid, and assuming one skid out-of-service, the WTP could meet a water demand up to

1.0 MGD.

The components of the membrane filtration plant include:

• Replace one (1) raw water pump

• Repair the intake structure (including electrical and mechanical systems)

• Rehabilitate WTP concrete structures and handrail

• New chemical feed and storage systems

• Flocculator drive unit replacement

• Sedimentation basin mud valve replacements

• Convert sedimentation basin into break tank

• New membrane feed pumps

• New membrane filter building

• Microfiltration membrane skid system

• Rehabilitate the existing clearwell tank and install baffling

• Two (2) new finished water pumps

• New backwash and sludge holding pond and decant pump station

• New sludge drying pad

• New site piping and valves

• New distribution piping to connect to the Town of Hurt’s system

• Operations building rehabilitation (electrical, HVAC, and architectural components)

• Operations building roof replacement

• New emergency generator and transfer switch

• New electrical service and motor control center (MCC)

• New instrumentation, controls, and SCADA system

S V M P M E M B R A N E F I L T R A T I O N P L A N T P E R 3

Raw water pumps will be replaced with smaller capacity pumps and controls sized for the plants ultimate design capacity of. Necessary chemical feed systems, electrical & controls, building HVAC and ancillary systems will be upgraded. Raw water pumped to the WTP will receive chemical coagulant addition and be routed through the existing flocculation and sedimentation basins. Settled water will then be routed through one of three existing sedimentation basins which will be converted to a break tank. Water in this break tank will be pumped via new horizontal centrifugal pumps through a new modular microfiltration membrane system that will be housed inside a new building. Filtered water will then flow into the existing WTP clearwell from which new smaller capacity pumps will transfer finished water into the Town of Hurt distribution system.

C.2. Project Drawings

See below figures 2.1, 2.2, and 2.3. These figures provide information regarding the beneficiary location, proposed site improvements, and a process flow diagram.

DEVELOPMENT AREA

Legend

SVMP WTP Project Area

Beneficiary Property

Boundary

NOTES:

• Aerial imagery from 2023

VGIN Aerial Imagery.

• SVMP Boundary shown graphically per

Pittsylvania County GIS

Staunton River

Plastics 19.62 Ac.

Conservation

Area ±6 Acres

Figure 2.1

Southern Virginia

0 400 800

MAIN STREET - BUS. 29 Multimodal Park

GRAPHIC SCALE

1"=800' Membrane

Filtration Plant

REFURBISH CLEARWELL

INCLUDING NEW BAFFLING

NEW MEMBRANE BUILDING

EXISTING RAW WATER

METER VAULT

EXISTING FLASH MIXER

GENERATOR

AND PAD

CHEMICAL FEED

STORAGE AND

FEED UPGRADE

CONVERT 1 SEDIMENTATION

BASIN TO BREAK TANK AND

INSTALL MEMBRANE FEED

PUMPS

RENOVATE

LABORATORY

NEW SCADA

SYSTEM

REPLACE

FLOCCULATOR

DRIVES AND

ADD VFDS

DRYING PAD

DECANT

PUMP STATION

TO DISCHARGE

2 NEW

BACKWASH

& SOLIDS

HOLDING

BASINS

REHABILITATE 3 OF 4 EXISTING

SEDIMENTATION BASINS

OFF VIEW IMPROVEMENTS

BACKWASH SYSTEM

T O

T O

W N

O F

H U

R T

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L E

D

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P in e y F o re s t

R o a d n v ill e V

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CHLORINE

ADDITION

RAW WATER

CHEMICAL ADDITION

(CAUSTIC AND ALUM)

RAPID MIX FLOCCULATION SEDIMENTATION

MAX W.S.

TO TOWN

OF HURT

DISTRIBUTION

SYSTEM

FINISHED WATER

MEMBRANE FEED

PUMPS

MIN W.S.

CLEARWELL FINISHED CHEMICAL

ADDITION (CHLORINE, CAUSTIC,

AND CORROSION INHIBITOR)

MEMBRANE

FILTRATION

BREAK TANK

(CONVERTED

SEDIMENTATION

BASIN)

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P in e y F o re s t

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S V M P M E M B R A N E F I L T R A T I O N P L A N T P E R 7

C.3. Construction Cost Estimate

Below is the construction cost estimate for the project with a combination of unit prices and lump sum items. Also included below in Table 3-2 is a project planning factor table that includes a total project cost estimate. Construction contingency at this phase is 10%. After bidding and awarding the construction contract to a general contractor, the contingency amount may be reduced to 5%.

All work proposed in the below cost estimate will be bid in a single construction contract, including demolition, site work, etc.

Table 3-1 - 0.5 MGD SVMP WTP Cost Estimate

Item Description Unit Quantity Unit Price Total

1 Refurbish Intake Mechancial, Structure & Electrical LS 1 $ 200,000 $ 200,000

2 Raw Water Pump Replacement LS 1 $ 75,000 $ 75,000

WTP Concrete & Misc Metal Hardware, Railing, Misc Restoration

LS

$ 100,000

$ 100,000

4 Chemical Feed Storage and Feed Upgrade LS 1 $ 275,000 $ 275,000

5 Flocculation Mixer Drive Unit Replacement and VFD EA 4 $ 65,000 $ 260,000

6 Sedimentation Basin - Mud Valves Replacement EA 3 $ 12,000 $ 36,000

7 Convert One Sed. Basin to Break-tank & Related Piping LS 1 $ 150,000 $ 150,000

8 Membrane Feed Pumps and VFDs EA 2 $ 75,000 $ 150,000

Membrane Building (Structure, Slab, Electrical, Lighting, and HVAC)

SF

2,500

$ 325

$ 812,500

10 Filter Platform, Pipe Supports, Stairs, Misc LS 1 $ 30,000 $ 30,000

11 Microfiltration Membrane System LS 1 $ 2,200,000 $ 2,200,000

12 Refurbish Clearwell including new baffling LS 1 $ 150,000 $ 150,000

13 Replace Finish Water Pumps EA 2 $ 70,000 $ 140,000

14 Site Piping and Valves LS 1 $ 500,000 $ 500,000

15 Piping Interconnection with Town of Hurt LF 1,650 $ 175 $ 288,750

16 Operations Building Misc Demolition LS 1 $ 40,000 $ 40,000

17 Replace Operations Building HVAC System LS 1 $ 90,000 $ 90,000

18 Partial Interior and Exterior Lighting Replacement LS 1 $ 35,000 $ 35,000

19 Partial Windows and Door upgrade/replacement LS 1 $ 30,000 $ 30,000

20 Laboratory Equipment, Furniture, Cabinet Restoration LS 1 $ 40,000 $ 40,000

21 Roof & Structural Repairs LS 1 $ 125,000 $ 125,000

22 Generator & pad LS 1 $ 275,000 $ 275,000

23 Electrical (Including upgrading incoming power and MCC) LS 1 $ 875,000 $ 875,000

24 Instrumentation and Controls LS 1 $ 125,000 $ 125,000

25 New SCADA System LS 1 $ 100,000 $ 100,000

26 New Backwash & Sludge Holding Lined Earthen Basins EA 2 $ 150,000 $ 300,000

27 Sludge Basin Decant Pump Station and forcemain LS 1 $ 175,000 $ 175,000

28 Sludge Drying Pad LS 1 $ 40,000 $ 40,000

29 General Site Improvements LS 1 $ 150,000 $ 150,000

Mobilization and General Conditions (5%) $ 388,000

Construction Subtotal $ 8,158,000

Contingency (10%) $ 820,000

Total Construction Cost $ 8,978,000

S V M P M E M B R A N E F I L T R A T I O N P L A N T P E R 8

Table 5-2 - 0.5 MGD SVMP WTP

Project Planning Factors

Construction Cost $ 8,158,000

Construction Contingency (10%) $ 820,000

Engineering (Survey, Design, Permitting, and Construction Administration) $ 995,000

Geotechnical, Lead & Asbestos surveys $ 35,000

Resident Inspection $ 120,000

Part Time Engineering Inspection $ 55,000

DEQ Stormwater Permit Fee $ 8,000

Administrative and Legal Expenses $ 190,000

Total Project Cost* $ 10,381,000

C.4. Project Constraints

There are no major design or construction constraints for this project. Being that the water treatment plant is not currently in service, renovation of existing facilities and installation of new equipment and infrastructure will be simpler than in an active facility.

The survey and field investigation phase will be critical to determine location of current onsite utilities and condition of existing infrastructure. This will inform design decisions on location of new equipment and rehabilitation needs of existing systems.

C.5. The Proposed Method of Construction Procurement

This project will be a traditional design/bid/build with a competitive bid process consistent with 2 C.F.R. § 200.320(c). No portion of this project will be performed via an alternative construction procurement method such as design/build, construction management at risk, the applicant’s own forces, and/or a construction manager.

C.6. Number of Construction Contracts Anticipated

This project will be competitively bid through a single construction contract.

C.7. Project Permits

The following permits will be required to be obtained prior to the start of construction:

• VDH Construction Permit – Engineer to submit for permit on behalf of Owner

• Pittsylvania County Building Permit – Contractor to obtain permit

• Pittsylvania County E&S Permit – Contractor to obtain permit

• DEQ VPDES Permit (discharge from Backwash and Solids Holding Ponds) – Engineer to submit for permit on behalf of Owner and Contractor to obtain permit coverage

Based on the current project schedule, which is provided in section C.8. below, the permitting process will take place following the 90% design submission and prior to the 100% ready for bid plans being submitted that incorporate all agency comments. This is anticipated to take place in September and October 2026.

S V M P M E M B R A N E F I L T R A T I O N P L A N T P E R 9

Table 8.1 - Schedule

SVMP Membrane Filtration Plant - Project Schedule

90% Design Submittal and Review

Construction Permitting

100% Submittal - Ready for Bid

Advertise and Receive Bid

Notice to Proceed

Constructio

Con

35% Design Submittal and Review

Field Survey and Existing Conditions Evaluation

Design Contract Procurement

Environmental Review

Funding Acquisition

10 9 8 7 6 5 4 3 2 1 Description

C.8. Project Schedule

Table 8.1 shows the project schedule from the start of the funding acquisition phase to the completion of construction. Easements are not included in the below schedule as they are anticipated to not be required for this project.

Table 8.1 - Schedule (continued)

Description

SVMP Membrane Filtration Plant - Project Schedule

7 8 9 10 11 12 1 2 3 4 5

6 7

10 11 12

Funding Acquisition

Environmental Review

Design Contract Procurement

Field Survey and Existing Conditions Evaluation

35% Design Submittal and Review

90% Design Submittal and Review

Construction Permitting

100% Submittal - Ready for Bid

Advertise and Receive Bids

Notice to Proceed

Construction - Substantial Completion

Construction - Final Completion