ITB NO. 17-26 MATTAWOMAN WASTEWATER TREATMENT … · 2017. 6. 29. · ITB 17-26 – ADDENDUM #4 3 i. NEC Article 336 j. NEMA WC57/ICEA S-73-532 k. ICEA T-29-520 (210,000 Btu/hr) Flame

ITB 17-26 – ADDENDUM #4

1

CHARLES COUNTY GOVERNMENT

Department of Fiscal and Administrative Services

Purchasing Division

Telephone: 301-645-0656

June 29, 2017

ITB NO. 17-26

MATTAWOMAN WASTEWATER TREATMENT PLANT (MWWTP)

CLOSED LOOP SYSTEMS IMPROVEMENT

ADDENDUM NUMBER FOUR

TO: All Bidders

Please be advised of the following modification(s) & information related to Invitation to Bid (ITB)

17-26. These modifications, comments, and attachments are hereby made a part of the solicitation

documents to the same extent as if bound therein. The last day for questions has passed and the bid due

date and time remains the same as stated in Addendum 3.

1. Change – ITB Solicitation Document

A. Part I – Instructions to Bidders, Section 2.1 – Award of Contract

Replace the existing text with the bold and italicized text below:

The County reserves the right to reject any and all Bids and to accept whichever Bid is deemed

to be in the best interest of the County. Further, the County reserves the right to negotiate with

the apparent low bidder or low bidders to achieve the most beneficial contract price, completion

schedule, and scope of work. The County anticipates the award based upon the Total Bid Price

(Base Bid plus Allowances), with or without Bid Alternate values as desired and in any

combination that best suits the County’s project for the funds available, this criteria may be used

to determine the apparent low bidder.

The County intends to contract with a single firm and not with multiple firms doing business as

a joint venture. Subcontractors may not be used in the conduct of this contract without express

written approval of the County. The County reserves the right to reject any subcontracted

relationship if changes or additions of subcontractors are necessary during the life of the

contract. The Contract documents will consist of the Contract, this Solicitation, the Bidder’s bid,

and any addenda or other modifications to the solicitation and items below specified in Part I,

Section 2.3.


2

B. Part I –Instructions to Bidders, Section 5.0 – Forms

Replace the Bid Form in its entirety and replace with the Revised Bid Form (d. 6/29/2017) in

Attachment A of this Addendum.

C. Part III – Special Provisions, Section 3.0 – Scope of Work

Replace the Scope of Work section in its entirety and replace with the Revised Scope of Work (d.

6/29/2017) in Attachment B of this Addendum.

D. Appendices

1. Appendix 1 – Closed Loop – Specifications – 170511.pdf

a. Section 15060 – Article 2.02B

Add the following item and text: 4. PVC Drain Pipe

“4. PVC Drain Pipe

a. PVC drain pipe shall be ASTM D1784, Schedule 40. Fittings used with this pipe shall be solvent weld type conforming to ASTM D2665. All piping and fittings shall be of

same color and provided by the same manufacturer.

b. Section 15060 – Article 3.11

Add the following additional line item and text to the existing table:

FD Floor Drain PVC Sch 40 N/A Solvent

Welded

N/A D

c. Section 16120 – Article 1.06

Add the following item: D. Cable Tray: 16114

d. Section 16120 – Article 2.01

Add the following item and text: F. Tray Cable (TC)

1. Tray cable shall meet the following UL standards and listing and additional standards:

a. UL83 Thermoplastic insulated wires and cables b. UL44 Thermoset insulated wire and cables c. UL1277 Electrical Power and Control Tray Cables d. UL listed Sunlight resistant in all sizes and in all colors as required e. IEEE 1202 (70,000 Btu/hr) Vertical cable Tray Frame Test f. Outer jacket is flame retardant g. TC containing conductors size 6 AWG or smaller, the equipment grounding

conductor shall be provided within the cable

h. ASTM standards


3

i. NEC Article 336 j. NEMA WC57/ICEA S-73-532 k. ICEA T-29-520 (210,000 Btu/hr) Flame test

2. Inner Conductor. The Conductor shall be soft annealed cooper.

3. Inner Conductor Insulation: The insulation shall be high-heat and moisture resistance,

THHN/THWN-2 or XHHW-2.

4. Jacket: Jacket shall be abrasion, moisture, gasoline and oil resistant nylon or listed

equivalent.

5. Manufacturer: Provide tray cable manufacturer by Encore Wire Corporation or

equivalent.

e. Section 16120 – Article 3.01.A

Add item and text: 5. Tray Cable

a. Shall be installed per the manufacturer’s published installation instruction. b. Cable tray shall be supplied from a single manufacturer. c. Bends shall be made so the cable will not be damaged. For tray cable without metal

shielding, the minimum bending radius of the inner edge curve shall be as follows:

1in or less in overall diameter shall not be less than four (4) times the overall

diameter. Over 1in to 2in overall diameter shall not be less than five (5) times the

overall diameter, larger than in diameter shall not be less than six (6) times the overall

diameter.

d. Tray cable may be used in conduit, raceways and cable trays for power, lighting, control and signal circuits as specified in the applicable section of the NEC.

2. Appendix 1 – Closed Loop – Drawings – 170511.pdf

a. Drawing E027, Manhole Detail

Add Note 3 to read as follows: All manholes shall be 72” deep. Coordinate throat height

with manhole depth.

b. Drawing E027, Manhole Detail, Manhole Schedule, MH-2

Delete strikethrough text and replace with bold and italicized text: "48”x48” 60”x60”

3. Appendix 1 – Effluent – Specifications – 170511.pdf

a. Section 02740, Article 2.01.D

Add the following after the first sentence: Fittings for underground pipe confirming to

ANSI/AWWA C153/A21.53 are also acceptable.


4

2. Written Questions Received as of 6/20/2017

# Question Response

1 We would like to make a second visit to the site. Please

advise if a second visit can be scheduled.

A second optional site visit was conducted in accordance

with Addendum 2.

2

The Federal Insert has been provided with the bid

documents. At the prebid meeting it was stated that

Federal guidelines for MBE subcontracting were not a

project requirement. Please clarify which provisions are

applicable to this Contract and which document takes

precedence. One particular example for clarification:

Are Buy American requirements required for this

project?

All federal guidelines in Appendix 6 apply. As stated on

page 18 of the federal insert "Part 31 contains reference

to the Davis-Bacon Act and "Buy American"

requirements of the Clean Water Act. Notwithstanding

these references, special appropriation act projects are not

subject to these requirements." This project is a special

appropriation project and the "Buy American"

requirement does not apply.

3

Per note R on sheet G003 we are to assume that some

material at the Mattawoman WWTP contains asbestos.

Can you provide an estimated quantity and type of

material that may contain asbestos for this contract. Or

an allowance for Abatement?

Refer to Section 02030, Article 1.03 regarding hazardous

environmental conditions including asbestos.

4 Can we come and take a walk around the Mattawoman

Wastewater Treatment Plant?

A second optional site visit was conducted in accordance

with Addendum 2.

5

Capacity of the bypass: In the summary of work on

page 01010-7 it states the existing flow rates have a

peak of 45 mgd which is approx. 31,500 gpm.

On drawing M-002 (sheet 35) it states the new design

flow of the pump stations (raw and effluent) is 41,667

gpm.

The bypass specification doesn't specify any required

specific flow, just to cover peak.

In addition, the drawings show a 36" HDPE bypass

line. Based on this I would assume the engineers based

design off the 31,500. If they intended to cover 41,667

the velocity through the 36" pipe would be approx.

15.6 feet per second which is way higher then you want

to be on a sewer bypass. Versus 11.82 fps for 31,500

gpm which is about the maximum it should be. Please

confirm that the bypass pump systems should be

designed for 45 mgd.

The bypass should be designed for a peak flow of 45

mgd.

6

The specifications and drawings don't indicate that the

cables in the cable tray will be tray cables. The only

reference is to THHN cables for 600v. Can you

confirm that individual 600v THHN cables should be

provided in the cable tray instead of multi conductor

tray cable? If tray cables are to be used, please provide

a specification.

Refer to Item 1.D.1 of this addendum for clarification.


5

7

The door schedule on A009 references 3 different

hardware sets (1, 2, &3). In spec section 08710-Door

Hardware, 3.06 has the hardware set schedule, but only

has hardware set No. 1. Please clarify.

Double doors SPS100A, SPS100B, SPS101, and SPS103

shall have Hardware Set 1. Single doors SPS102 shall

have a threshold, hinges, lockset L4, a closer, a door

protection plate, weather-stripping, and smoke/draft

seals. All cores to be SFIC (small format interchangeable

cores).

8 "Manhole Detail" on E027 shows the length and width

for the electrical manholes, but not the depth. Please

provide.

Refer to item 1.D.2 of this addendum for clarification.

9 Is it the Engineers intent to sand blast all metals in the

pump station per drawing m012? Conduit, plumbing

materials, HVAC materials, handrails?

Abrasive blast clean and coat piping, pipe supports,

support beams, and structural steel with System M-2 per

specification section 09900, Article 3.07.A. This

treatment does not apply to electrical conduit, plumbing,

HVAC materials, and handrails.

10 Is it the Engineers intent to paint any existing

equipment in the pump station? Gates & wall thimbles?

All existing equipment remaining after demolition shall

be painted, including wall thimbles. Refer to Section

09900, Article 3.07.A.

11 Is any concrete required to be painted in the pump

station?

Refer to Room Finish Schedule on Drawing A009 for

areas that require painting.

12 Is there lead paint or any other hazardous materials in

the pump station?

The County will engage a lead paint testing agency and

issue the results in a future addendum.

13 If an emergency auto dialer is provided, can the 24

hour manned attendant for the by-pass pump system be

waived?

Refer to items 1.A, 1.B., and 1.C of this addendum for

clarification.

14 Is the contractor expected to clean any sludge from the

wet wells, if so how much material is expected to be in

the PS?

Use a quantity of 75 cubic yards (~100 dry tons) for

bidding purposes. Refer to item A-6 of the revised Bid

Form in Attachment A and revised Scope of Work in

Attachment B of this addendum.

15 Can any sludge or pump station de-watering materials

be disposed of on-site? No.

16 There is a large pile of debris adjacent to the valve

replacement work area, will the Owner dispose of the

material?

Disposal of those materials shall not be included in the

contractor’s bid.

17 Will the Owner secure the E&S permit and the

Building permit? Yes. The County has obtained these permits.

18 Can one by-pass be utilized for both the valve

replacement and the PS work? Yes. Refer to Addendum One.

19 Can the Owner provide on-site power if electric pumps

are utilized for by-pass? No.

20 Can the contractor work extended hours during the by-

pass pumping operation?

Yes. Notify County of extended schedule at least 1 week

ahead to allow County to modify inspectors working

hours.

21 Does the Owner have a preferred instrumentation I&C

subcontractor?

The County does not have a preferred System Integrator

(SI).

22 Will the Owner provide temporary construction water

for the project?

The Contractor may use plant utility (non-potable) water

to the degree the usage doesn't interfere with the plant

processes. Contractor to tie-in and run any temporary

lines.

23 Does the Owner have a data base for the 25% MBE

goal? No.

24 Will the project be awarded on Total Base Bid Items

Priced? Refer to Item 1.A of this addendum for clarification.


6

25 Is the Pump Station in a flood zone? The pump station is not within the 100 year floodplan but

is within the 500 year flood plan.

26 Drawing M008 indicates all concrete is to be power

washed and sealed, does this include the walls and

ceilings?

All concrete surfaces shall be cleaned. All exposed to

view horizontal concrete surfaces shall be sealed.

27 Is there a planholders list? No.

28

Article 1.3 of the Instructions to Bidders states that we

are to submit 1 unbound original and 3 bound copies.

Since the bidding documents were provided in

electronic format, please confirm that we are to provide

1 original and 3 copies.

Part I, Section 1.3 of the ITB specifies the number of Bid

packages.

Part I, Section 1.2 of the ITB specifies the Bid Package

Content.

29

Article 4.3 of the Instructions to Bidders states that the

contractor needs to include all sales tax in the bid price

and none of the materials and equipment is tax exempt.

Typically, materials and equipment at wastewater

treatment plants in the State of Maryland that are

considered tangible property are tax exempt. Please

confirm that tangible property is tax exempt and we can

exclude this from our bid price.

The County's tax exempt certificate is not transferable to

the Contractor.

30 Please confirm that the building permit will be obtained

by the owner. If not, then please provide the cost so we

can include it in our bid.

Correct. The owner will provide the building permit.

31 Please confirm that the trade permits can be obtained at

no cost to the contractor. If not, then please provide the

cost so we can include it in our bid.

The Contractor has to apply for and pay for trade permits.

Currently, FY17 fees and charges are available at

https://www.charlescountymd.gov/sites/default/files/pgm

/files/fy17_feesandcharges_4-20-17_0.pdf.

32 Are you replacing your wastewater treatment

equipment or is this a bid specifically to the pumping

station equipment?

The solicitation document contains specifics about the

project, which is available on the County Bid Board at

www.charlescountymd.gov. Click on "Procurement", and

then "Bid Board".

33

Refer to Specification Section 02131 and various notes

on the Contract Drawings which require the Contractor

to remove all sludge, grit, and debris from tanks in

which new work is performed. Since the quantity of

sludge, grit, and debris to be removed is unknown, it is

requested that the County provide a defined quantity of

this residual material, in gallons, that is to be included

in lump sum base bid item(s). Alternatively, the County

could remove this work from the applicable firm lump

sum base bid item(s) and add a unit price bid item per

gallon of residual material to be removed to the Bid

Form. Please address this matter via addendum.

Use a quantity of 75 cubic yards (~100 dry tons) for

bidding purposes. Refer to item A-6 of the revised Bid

Form in Attachment A and revised Scope of Work in

Attachment B of this addendum.

34

Refer to Specification Section 01010 and 01540 with

regards to peak flow rate requirements for bypass

pumping. It is assumed those existing flow rates listed

in the table of Paragraph 1.10.C.1 shall govern bypass

pumping requirements and not those design flow rates

listed on Contract Drawing M002. If this is incorrect,

please clarify via addendum.

Bypass pumping should be designed for peak flow of 45

mgd.

35

Refer to Note No. 1 of the Fabricated Stainless-Steel

Slide Gate Schedule in Specification Section 11291

which states that the Contractor is required to field

verify the existing slide gate dimensions and other

existing conditions and that confirmation that this has

been completed be included with the shop drawings for

The County will not isolate and dewater the wet wells. It

is anticipated that temporary bulkheads and/or other

temporary structures and facilities will be necessary for

isolation purposes. Contractor shall provide all temporary

facilities and equipment necessary in accordance with

Specification Section 01010, Articles 1.06 and 1.10 and

https://www.charlescountymd.gov/sites/default/files/pgm/files/fy17_feesandcharges_4-20-17_0.pdfhttps://www.charlescountymd.gov/sites/default/files/pgm/files/fy17_feesandcharges_4-20-17_0.pdf


7

these gates. It is assumed that both the Influent

Wetwell and Grit Chamber(s) can be temporarily

isolated or removed from service and dewatered by the

County, without any additional cost or support by the

Contractor, to allow the Contractor to perform this field

verification. If this is incorrect, please clarify via

addendum including modifications to Specification

Section 01010 as necessary.

Specification Section 01501, Article 1.02. The plant will

be able to operate with no grit removal for up to 7 days.

36

Refer to the “North Elevation/Section” Detail on

Drawing A005 states to connect the Downspout to yard

piping and to see detail on A001. However, there is no

yard piping shown connected to this downspout. It is

our interpretation that all new and existing downspouts

are to discharge on grade and that no buried piping will

be connected to them. If this is incorrect, please notify

us via addendum and provided revised drawings

showing buried downspout discharge piping.

This is correct. Refer to Addendum 3 for further

clarification.

37

Refer to Specification Section 02740-2.01D of the

Effluent Forcemain Valve Replacement and Bypass

which states that fittings shall conform to AWWA

C110, but Section 2.01E.2b states that restraints for

Mechanical Joints are allowed to confirm to AWWA

C153. It is our interpretation that all Mechanical Joint

fittings will be allowed to be per AWWA C 153, as is

specified in in the Closed Loop Specification 15060-

2.02A.2. If this is incorrect, please notify us via

addendum.

Mechanical joint fittings conforming to AWWA C153

are also acceptable. Refer to item 1.D.3 of this addendum

for clarification.

38

Refer to Specification 15100.2.07.I. Schedule Note 1

which states that in addition to combination air valve

shown on Contract drawings, Contractor shall furnish

and install a 6” combination air valve located at the

high point on the existing force main, located in a vault

along Hawthrone Road. It also states that the existing

combination air valve should be demolished and an

uninstalled spare shall also be provided. Please

drawings of this vault, physical location of this vault on

a map or drawing, and photos of the vault and its

surroundings via addendum.

Refer to item B-6 of the revised Bid Form in Attachment

A and revised Scope of Work in Attachment B of this

addendum for clarification.

39

Drawing C3 details a line stop and wet tap into the

existing 36" influent pipe for the tie-in of the bypass

system. None of the contract drawings or the as builts

detail what type of pipe this is. Please clarify the type

of existing pipe material for bidding purposes.

We believe the 36" pipe is cast iron but there is a

possibility that it could be ductile iron.

40

Reference Drawing M6. Some of the 24" influent

piping, including the last valve on the 24" line leaving

the station gets demolished and replaced. Can the flow

be isolated so it does not come back into the pump

station during the influent bypass detailed on C3. The

bypass shown is for the 36" pipe, but no there is

nothing required for the 24" pipe. The contract

drawings and as built drawings do not provide enough

information. Please clarify that this pipe can be isolated

by the owner. If not and a linestop needs to be installed

similar to the 36" pipe, then please clarify the type of

existing pipe material for bidding purposes.

We believe the 24" pipe is cast iron but there is a

possibility that it could be ductile iron. The 24" influent

runs from the pump station to a splitter box alongside the

36" influent but is not utilized. There is a valve on the

24" pipe in close proximity of the splitter box; however,

the County assumes that it does not hold. Therefore, the

contractor needs to isolate and dewater the pipe as

necessary.


8

41 If not a plan holder's list, could you provide me with a

copy of the ITB attendance sheet?

A plan holder's list is not available. Attendance sheets are

available on the County Bid Board.

42

Refer to Paragraph 2.03 of Specification Section 02740

(Effluent Force Main Valve Replacement Specs) which

provides requirements of the linestops for use in

bypassing the Effluent Force Main Vault. Most notably

these include a maximum head loss requirement of 2

psi at 27 MGD through each linestop. Since the bypass

work associated with the Effluent Force Main Vault

has now been combined with the Closed Loop System

bypass operations via Addendum No. 1, it is assumed

that the requirements of Paragraph 2.03 of

Specification Section 02740 are no longer applicable to

any linestops utilized for any bypass operations

implemented to execute the Work of the Project. It is

further assumed that if linestops are utilized, that only

the requirements of Paragraph 2.11 of Specification

Section 15100 (Closed Loop System) shall apply. If

this is incorrect, please clarify via addendum including

the type and manufacturer of linestop equipment

capable of meeting specified head loss requirements.

Correct. The bypass system including the linestops

should be designed by the Contractor's engineer per the

Closed Loop specifications.

43 This is to request that [vendor] is added as one of the

named suppliers in the above reference pump

specifications.

The Master Equipment Schedule allows Contractors to

list pump manufacturers that are not listed otherwise.

44

Drawing Reference: M009, Project Manual Reference:

15060 Pipe Schedule. There is no designation on the

pipe schedule in section 15060. Typically PVC Drain

Pipe is Sch 40 DWV. Is this acceptable?

Refer to Item 1.D.1 of this addendum for clarification.

45 Please advise what type of PVC pipe the new floor

drain shown on M-09 is to be. Refer to Item 1.D.1 of this addendum for clarification.

***END OF ADDENDUM***


ATTACHMENT A


Page 1 of 6

Firm’s Name and Address:

Date:

FEIN#:

REVISED BID FORM (d. 6/29/2017)

The County Commissioners of Charles County, Maryland

Charles County Government Building

Post Office Box 2150

La Plata, Maryland 20646

Honorable Commissioners:

This bid is submitted in accordance with your “Notice to Bidders” inviting bids to be received for the

work outlined in the “Specifications and Drawings”, and the “Special Provisions” attached hereto for Bid

No. 17-26, MWWTP CLOSED LOOP SYSTEMS IMPROVEMENTS.

Having carefully examined the bid documents, the undersigned herein agrees to furnish all services as

outlined in the bid documents for the “Special Provisions” as stated, for the following prices:

A. BASE BID

ITEM

NO. DESCRIPTION OF ITEMS

UNIT

PRICE

EST.

QTY.** U/M TOTAL PRICE

A-1

Closed Loop System Improvements at

MWWTP excluding Base Bid Items: A-2, A-

3, A-4, A-5, & A-6. See Major Equipment

Schedule.

$ 1 Lump

Sum $

A-2 MWWTP Effluent Force Main Valve

Replacement and Bypass $ 1

Lump

Sum $

A-3 Concrete Crack Repair $ 100 Linear

Feet $

A-4 Spalled and Deteriorated Concrete Repair $ 50 Square

Feet $

A-5 Re-Seal Existing Concrete Joints $ 100 Linear

Feet $

A-6 Sludge and Grit Removal and Disposal $ 75 Cubic

Yards $

TOTAL BASE BID PRICE $

Bid Form continued on next page


Page 2 of 6

Bid Form continued

B. ALLOWANCE

ITEM

NO. DESCRIPTION OF ITEMS TOTAL PRICE

B-1 Computer Workstation for County Field Office $5,000.00

B-2 Programming Software $50,000.00

B-3 Programming Engineer Services $100,000.00

B-4 Additional Miscellaneous Wiring and Conduit $50,000.00

B-5 Additional Miscellaneous Small Diameter Piping and Fittings $20,000.00

B-6 Combination Air Valves per Section 15100, Article 2.07I, Note 1 $20,000.00

TOTAL ALLOWANCE PRICE $245,000.00

TOTAL BID PRICE (BASE + ALLOWANCE) $

C. ALTERNATE ITEMS*

ITEM


UNIT

PRICE

EST.


C-1 Continuous Pump Watch $ 1 Lump

Sum $

C-2 Partial Pump Watch $ 800 Hour $

All Alternates shall be bid.

D. CONTINGENCY BID ITEMS*

ITEM


UNIT

PRICE

EST.


D-1 Additional Test Pit Excavation $ 25 Cubic

Yards $

D-2 Select Backfill $ 100 Cubic

Yards $

D-3 Offsite Disposal of Unsuitable Material $ 100 Cubic

Yards $

D-4 Stone Bedding $ 50 Cubic

Yards $



Page 3 of 6

Bid Form continued

D. CONTINGENCY BID ITEMS – CONTINUED*

ITEM


UNIT

PRICE

EST.


D-5 Compacted Bank Run Gravel $ 50 Cubic

Yards $

D-6 Additional Excavation $ 100 Cubic

Yards $

D-7 Miscellaneous Concrete $ 25 Cubic

Yards $

D-8 Silt Fence $ 200 Linear

Feet $

D-9 Demolish and Replace Existing Bituminous

Concrete Pavement $ 50

Square

Yards $

D-10 ¾ Inch Type G1 Conduit $ 50 Linear

Feet $

D-11 ¾ Inch Type E1 Conduit $ 50 Linear

Feet $

D-12 No. 12 AWG, Type THWN Conductor $ 300 Linear

Feet $

D-13 No. 14 AWG, Type THWN Conductor $ 750 Linear

Feet $

D-14 No. 16 TSP Instrumentation Cable $ 150 Linear

Feet $

D-15 Low Voltage Conductor Terminations $ 30 Each $

D-16 Concrete Encased Ductbank $ 30 Linear

Feet $

D-17 Miscellaneous Electrical Labor $ 200 Man

Hours $

D-18 Miscellaneous Mechanical Labor $ 200 Man

Hours $

D-19 Additional Temporary Influent Pumping $ 14 Days $

D-20 Additional Temporary Effluent Pumping $ 14 Days $

* Contingency Bid Items and Alternate Bid Items may or may not be used.

** Est. Qty. – Quantities are estimated and not guaranteed.



Page 4 of 6

Bid Form continued

MAJOR EQUIPMENT SCHEDULE

Instructions: The Bidder MUST select at least one (1) Specified Equipment Manufacturer for Items 1 – 4, by circling the selected “Specified

Equipment Manufacturer” Bidder proposes to use in Column D, and which shall be included in the Total Item Bid Price (Item A-1). If also

proposing an “Or Equal” Equipment Manufacturer, enter the name of the “Or Equal” Equipment Manufacturer in the blank provided for each

item in Column D and provide an amount to be deducted from the Total Item Bid Price (Item A-1) in Column E Deductions for “Or Equal”

items shall not be considered in the evaluation of bids. If no name is circled, it is assumed the first product listed will be provided by the Bidder

regardless of whether, or not, an “or equal” is identified.

A.

ITEM

NO.

B.

SPECIFICATIO

N SECTION

C.

EQUIPMENT

DESCRIPTIO

N

D.

SPECIFIED EQUIPMENT

MANUFACTURER(S) AND “OR EQUAL”

ALTERNATIVE (CIRCLE SELECTED

AND/OR FILL IN BLANK)

E.

AMOUNT TO BE DEDUCTED

FROM A-1 (BASE BID) PRICE

FOR THE USE OF

SUBSTITUTE EQUIPMENT

MANUFACTURER

1 11304

Vertical

Extended Shaft

Centrifugal

Pumps

Xylem Flygt N/A

Fairbanks Nijhuis N/A

“Or Equal” Alternative:

___________________

2 11302 Vertical Turbine

Pumps

Fairbanks Nijhuis N/A

Goulds Water Technology N/A


___________________

3 11291

Fabricated

Stainless Steel

Slide Gates

Whipps, Inc. N/A

Rodney Hunt / Fountaine USA Inc. N/A


___________________



Page 5 of 6

Bid Form continued

4 16157

Variable

Frequency

Drives

Eaton N/A

•“Or Equal” Alternative:

___________________

It is understood and agreed that, if awarded a Contract, the Bidder shall not make any additions, deletions or substitutions to this certified list

without the consent of the Owner.



Page 6 of 6

Bid Form continued

By submitting a bid in response to this solicitation, the Bidder certifies that their firm is not debarred,

suspended, or otherwise ineligible for participation in government procurement by the federal

government, the State of Maryland, or any other state, county, or municipal government.

The undersigned has caused this Bid to be executed as of the day and year indicated above.

(Printed Name) (Signature)

(Title) (Email)

(Phone) (Fax)


ATTACHMENT B


Page 1 of 7

REVISED SCOPE OF WORK (d. 6/29/2017)

3.0 SCOPE OF WORK

The Scope of Work for this project includes, but is not limited to the furnishing of all coordination,

scheduling, supervision, labor, tools and equipment, materials and supplies,

mobilizations/demobilization as required for the construction of the project drawings and construction

specifications provided in the Appendices. The Closed Loop System Improvements at the Mattawoman

Wastewater Treatment Plant (MWWTP) shall comply with all applicable sections of the Charles County

Department of Planning and Growth Management Standards and Specifications for Construction and

all other applicable requirements of the County, the Maryland Department of the Environment, and any

other regulatory authority having jurisdiction to control, limit or otherwise regulate the work performed

under this contract.

3.1 BASE BID ITEMS

3.1.1 Bid Item A-1: Closed Loop System Improvements at Mattawoman Wastewater Treatment Plant (MWWTP)

The Contractor shall furnish all labor, material, and equipment/tools (must include the costs of the

“Specified Equipment Manufacturers”) necessary to coordinate, plan, and execute the work shown on

the project drawings and specifications that are provided in Appendix 1 of this ITB. Base Bid Items A-

2 through A-6 are excluded from this bid item.

Major Equipment Schedule

The Bidder shall provide equipment made by one of the specified equipment manufacturers for each

item listed on the “Major Equipment Schedule” on the Bid Form. The Bidder shall circle one “specified

manufacturer” per Bid Item number.

The Bidder may propose “Or Equal” equipment manufacturers, if the “Or Equal” equipment cost is less

than that of the “specified equipment manufacturer”. Any “Or Equal” equipment manufacturer proposed

for Items 1 to 4 shall be named in Column D, and the amount to be deducted from the Total Item Bid

Price (Item A-1) for the use of “Or Equal” Equipment shall be specified in column E on the “Major

Equipment Schedule” located within the Bid Form. The use of the “Or Equal” manufacturer’s

equipment must be accepted and approved by the County in writing. The Bidder certifies that the price

identified includes all costs associated with the “Or Equal” equipment including modifications and/or

additions to the work necessary to install the equipment and allow the unit to meet the performance

requirements specified. The County reserves the right to accept or decline the use of any or all “Or

Equal” equipment.

The design of the Project is based upon use of the specified manufacturers for each equipment type. Any

delay caused by the need for redesign necessary as a result of the use of “Or Equal” equipment shall not

constitute grounds for any increase in the Contract Price or extension of Contract Time and the

Contractor shall be fully and solely responsible for any additional cost or time resulting from the use of

“Or Equal” equipment.

Payment: Bid Item A-1 of the Bid Form establishes the lump sum price for which payment will be

made by the County for furnishing and installing the Closed Loop System Improvements at the

Mattawoman Wastewater Treatment Plant (MWWTP) and all work associated with this task in

accordance with the Contract Documents.


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3.1.2 Bid Item A-2: MWWTP Effluent Force Main Valve Replacement and Bypass

The Contractor shall furnish all labor, material, and equipment/tools necessary to coordinate, plan, and

execute the work shown on the project drawings and specifications titled Mattawoman Effluent Force

Main Valve Replacement and Bypass that are provided in Appendix 1 of this ITB.

Payment: Bid Item A-2 of the Bid Form establishes the lump sum price for which payment will be

made by the County for furnishing and installing the Mattawoman Effluent Force Main Valve

Replacement and Bypass and all work associated with this task in accordance with the Contract

Documents.

3.1.3 Bid Item A-3: Concrete Crack Repair

Concrete crack repair, in accordance with Specification Section 03732 of the Contract Documents.

Payment: Bid Item A-3 of the Bid Form establishes the unit price for which payment by the County

will be based for the quantity of work authorized by the County and satisfactorily performed by the

Contractor.

3.1.4 Bid Item A-4: Spalled and Deteriorated Concrete Repair

Spalled and deteriorated concrete repair, in accordance with Specification Section 03732 of the Contract

Documents.


will be based for the quantity of work authorized by the County and satisfactorily performed by the

Contractor.

3.1.5 Bid Item A-5: Re-Seal Existing Concrete Joints

Re-seal existing concrete joints, in accordance with Specification Section 03732 of the Contract

Documents.


will be based for the quantity authorized by the County and satisfactorily installed by the Contractor.

3.1.6 Bid Item A-6: Sludge and Grit Removal and Disposal

Remove and dispose sludge, grease, grit, and debris in accordance with Specification Section 02131 of

the Contract Documents.



3.2 ALLOWANCE BID ITEMS

The Bid Form provides specified cash allowances as part of the work. Allowances includes cost of

product and applicable taxes to the Contractor or Subcontractor, less applicable trade discounts.

Allowance shall include costs associated with the product delivery to site and handling at the site,

including unloading, uncrating, and storage (protection of Products from elements and from damage) and

labor for installation and finishing.

The Contractor shall coordinate with the County for consideration and selection of Products and the


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Contractor shall execute purchase agreement with designated supplier, arrange for delivery, and promptly

inspect products upon delivery for completeness, damage, and defects. Submit claims for transportation

damage.

Differences between allowance amounts and actual costs may be adjusted at the County’s discretion via

Change Order as specified in Part II, General Provisions of the ITB prior to final payment.

3.2.1 Bid Item B-1: Computer Workstation for County Field Office

Furnish and install Computer Workstation for County’s Field Office in accordance with Specification

Section 01501.

3.2.2 Bid Item B-2: Programming Software

Furnish and install programming software in accordance with Specification Section 16942.

3.2.3 Bid Item B-3: Programming Engineer Services

Allowance for Programming Engineer in accordance with Specification Section 16900.

3.2.4 Bid Item B-4: Additional Miscellaneous Wiring and Conduit

Furnish and install additional miscellaneous wiring and conduit above and beyond that is required by

the Contract Documents.

3.2.5 Bid Item B-5: Additional Miscellaneous Small Diameter Piping and Fittings

Furnish and install additional miscellaneous small diameter piping and fittings, above and beyond that

is required by the Contract Documents.

3.2.6 Bid Item B-6: Combination Air Valves per Section 15100, Article 2.07I, Note 1

In addition to the combination air valves shown on the Contract Drawings, Contractor shall furnish and

install a 6” combination air valve located at the high point on the existing force main, located in a vault

along Hawthorne Road. The existing combination air valve shall be demolished. An uninstalled spare

shall also be provided.

3.3 ALTERNATE BID ITEMS

3.3.1 Bid Item C-1: Continuous Pump Watch

Provide continuous (24 hours per day, 7 days per week) pump watch during bypass operation by a

representative of the Contractor who is trained and certified by the pump supplier.

1. Liquidated damages of $300/hour will be assessed if the temporary pumping system is left unmanned, and the County is required to man the system.

Payment: Bid Item C-1 of the Bid Form establishes the lump sum price for which payment will be made

by the County for the continuous manning of the bypass operation.

3.3.2 Bid Item C-2: Partial Pump Watch Provide partial pump watch by the hour for bypass operation by a representative of the Contractor who is

trained and certified by the pump supplier.


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Payment: Item C-2 of the Bid Form establishes the unit price for which payment by the County will be

based for the quantity of hours authorized by the County and provided by the Contractor. It is estimated

that 800 hours will be needed to perform this task. The hourly rate shall include all expenses incurred,

including but not limited to project management, vehicles, overhead, and all other related costs.

3.4 CONTINGENCY BID ITEMS

Contingency bid items quantities are estimated and not guaranteed. The Bid Form established the Unit

Price to be paid for each contingency bid item. Contingency Bid Items will be performed only at the

express written authorization of the County. The Bidder agrees that the unit prices represent a true

measure of all labor, materials, equipment, and services required to provide the specified item, including

allowances for overhead and profit for each type and unit of work provided. When authorized, the work

associated with contingency bid items shall be above and beyond, separate and apart from work that is

customarily required or reasonably expected in the performance of other work under this contract.

3.4.1 Bid Item D-1: Additional Test Pit Excavation

Additional test pit excavation as directed by the County, and in accordance with the Contract

Documents. The work performed under this bid item shall include backfilling as required, and in

accordance with the contract documents.

Payment: Bid Item D-1 of the Bid Form establishes the unit price for which payment by the County

will be based for the quantity authorized by the County and work performed by the Contractor.

3.4.2 Bid Item D-2: Select Backfill

Furnish and install select backfill material as directed by the County, and in accordance with the Contract

Documents. Select backfill shall be from a material source approved by the County.



3.4.3 Bid Item D-3: Offsite Disposal of Unsuitable Material

Transport unsuitable material from the project to an offsite disposal site as directed by the County. Bid

price shall include all associated disposal/dumping fees necessary to perform this work.


will be based for the quantity authorized by the County and satisfactorily disposed of by the Contractor.

3.4.4 Bid Item D-4: Stone Bedding

Furnish and install stone bedding backfill as directed by the County, and in accordance with the Contract

Documents.



3.4.5 Bid Item D-5: Compacted Bank Run Gravel

Furnish and install compacted bank run gravel as directed by the County, and in accordance with the

Contract Documents.


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3.4.6 Bid Item D-6: Additional Excavation

Additional excavation and offsite disposal of unsuitable material as directed by the County, and in

accordance with the Contract Documents.



3.4.7 Bid Item D-7: Miscellaneous Concrete

Furnish and install miscellaneous concrete as directed by the County, and in accordance with the

Contract Documents.



3.4.8 Bid Item D-8: Silt Fence

Furnish and install additional silt fence as directed by the County, and in accordance with the Contract

Documents.



3.4.9 Bid Item D-9: Demolish and Replace Existing Bituminous Concrete Pavement

Demolish and replace existing bituminous concrete pavement, including graded aggregate base course,

as directed by the County, and in accordance with the Contract Documents.



3.4.10 Bid Item D-10: ¾ Inch Type G1 Conduit

Furnish and install ¾-inch Type G1 Conduit as directed by the County, and in accordance with the

Contract Documents.



3.4.11 Bid Item D-11: ¾ Inch Type E1 Conduit

Furnish and install ¾-inch Type E1 Conduit in accordance with the Contract Documents.



3.4.12 Bid Item D-12: No. 12 AWG, Type THWN Conductor

Furnish and install No. 12 AWG, Type THWN Conductor in accordance with the Contract Documents.


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3.4.13 Bid Item D-13: No. 14 AWG, Type THWN Conductor

Furnish and install No. 14 AWG, Type THWN Conductor in accordance with the Contract Documents.



3.4.14 Bid Item D-14: No. 16 TSP Instrumentation Cable

Furnish and install No. 16 TSP Instrumentation Cable in accordance with the Contract Documents.



3.4.15 Bid Item D-15: Low Voltage Conductor Terminations

Furnish and install Low Voltage Conductor Terminations in accordance with the Contract Documents.


will be based for the quantity authorized by the County and satisfactorily installed by the Contractor in

accordance with the Contract.

3.4.16 Bid Item D-16: Concrete Encased Ductbank

Furnish and Install Concrete Encased Ductbank (reinforced) with three 4-Inch Type D Conduits and

Type E-1 Conduit Stub Ups on Both Ends (One Ductbank) in accordance with the Contract Documents.



3.4.17 Bid Item D-17: Miscellaneous Electrical Labor

Provide additional miscellaneous labor as necessary for electrical work.


will be based for the quantity authorized by the County and provided by the Contractor.

3.4.18 Bid Item D-18: Miscellaneous Mechanical Labor

Provide additional miscellaneous mechanical labor as necessary for mechanical work.



3.4.19 Bid Item D-19: Additional Temporary Influent Pumping

Provide additional temporary influent Pumping, as directed by the County, and in accordance with

Specification Section 01540. This work excludes mobilization/demobilization.


will be based for the quantity (days) authorized by the County and provided by the Contractor.


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3.4.20 Bid Item D-20: Additional Temporary Effluent Pumping

Provide extended temporary effluent Pumping as directed by the County, and in accordance with

Specification Section 01540. This work excludes mobilization/demobilization.

