W912DR-17-R-0001_Solicitation.pdf

CODE

(Hour)

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until 02:00 PM local time 27 Mar 2017

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A X B X C

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G F 84

85 - 88 X H 89 - 109 ian.weiss@usace.amy.mil

RATING PAGE OF PAGES

7. ISSUED BY

(Date)

IMPORTANT - Award will be made on this Form, or on Standard Form 26, or by other authorized official written notice.

Previous Edition is Unusable 33-134 STANDARD FORM 33 (REV. 9-97)

Prescribed by GSA FAR (48 CFR) 53.214(c)

1 109

(If other than Item 7)

15A. NAME 16. NAME AND TITLE OF PERSON AUTHORIZED TO

AND

ADDRESS

SIGN OFFER (Type or print)

OF

OFFEROR

AMENDMENT NO. DATE

15B. TELEPHONE NO (Include area code) 17. SIGNATURE15C. CHECK IF REMITTANCE ADDRESS

IS DIFFERENT FROM ABOVE - ENTER

SUCH ADDRESS IN SCHEDULE.

18. OFFER DATE

1. THIS CONTRACT IS A RATED ORDER

UNDER DPAS (15 CFR 700)

2. CONTRACT NO.

W912DR 8. ADDRESS OFFER TO

See Item 7

9. Sealed offers in original and 2 copies for furnishing the supplies or services in the Schedule will be received at the place specified in Item 8, or if handcarried, in the depository located in

CAUTION - LATE Submissions, Modifications, and Withdrawals: See Section L, Provision No. 52.214-7 or 52.215-1. All offers are subject to all terms and conditions contained in this solicitation.

10. FOR INFORMATION

CALL:

A. NAME (NO COLLECT CALLS)

IAN WEISS 410-962-4978

11. TABLE OF CONTENTS

SOLICITATION/ CONTRACT FORM

SUPPLIES OR SERVICES AND PRICES/ COSTS

2 - 10

X I CONTRACT CLAUSES

DESCRIPTION/ SPECS./ WORK STATEMENT X

PACKAGING AND MARKING

11 - 32 J LIST OF ATTACHMENTS

INSPECTION AND ACCEPTANCE

DELIVERIES OR PERFORMANCE

X K

REPRESENTATIONS, CERTIFICATIONS AND

OTHER STATEMENTS OF OFFERORS

CONTRACT ADMINISTRATION DATA 33 X

SPECIAL CONTRACT REQUIREMENTS

OFFER (Must be fully completed by offeror) 34 X M

L INSTRS., CONDS., AND NOTICES TO OFFERORS

EVALUATION FACTORS FOR AWARD

NOTE: Item 12 does not apply if the solicitation includes the provisions at 52.214-16, Minimum Bid Acceptance Period.

is inserted by the offeror) from the date for receipt of offers specified above, to furnish any or all items upon which prices are offered at the price set opposite each item, delivered at the designated point(s), within the time specified in the schedule.

13. DISCOUNT FOR PROMPT PAYMENT

(See Section I, Clause No. 52.232-8)

14. ACKNOWLEDGMENT OF AMENDMENTS

(The offeror acknowledges receipt of amendments

AMENDMENT NO. DATE

to the SOLICITATION for offerors and related documents numbered and dated):

FACILITY

12. In compliance with the above, the undersigned agrees, if this offer is accepted within calendar days (60 calendar days unless a different period

SOLICITATION, OFFER AND AWARD

X

(X) SEC. DESCRIPTION (X) SEC. DESCRIPTION PAGE(S)

PART I - THE SCHEDULE

26. NAME OF CONTRACTING OFFICER (Type or print) 27. UNITED STATES OF AMERICA 28. AWARD DATE

EMAIL:TEL: (Signature of Contracting Officer)

CODE CODE

B. TELEPHONE (Include area code) C. E-MAIL ADDRESS

AWARD (To be completed by Government)

19. ACCEPTED AS TO ITEMS NUMBERED 20. AMOUNT 21. ACCOUNTING AND APPROPRIATION

22. AUTHORITY FOR USING OTHER THAN FULL AND OPEN COMPETITION:

10 U.S.C. 2304(c)( ) 41 U.S.C. 253(c)( ) (4 copies unless otherwise specified)

23. SUBMIT INVOICES TO ADDRESS SHOWN IN ITEM

24. ADMINISTERED BY (If other than Item 7) CODE 25. PAYMENT WILL BE MADE BY CODE

PART IV - REPRESENTATIONS AND INSTRUCTIONS

PART III - LIST OF DOCUMENTS, EXHIBITS AND OTHER ATTACHMENTS

35 - 64

PART II - CONTRACT CLAUSES

U.S. ARMY CORPS OF ENGINEERS, BALTIMORE

10 S. HOWARD STREET

ROOM 7000

BALTIMORE MD 21201 410-962-2196

FAX:

TEL:

FAX:

TEL:

NOTE: In sealed bid solicitations "offer" and "offeror" mean "bid" and "bidder".

SOLICITATION

65 - 83

6. REQUISITION/PURCHASE NO.5. DATE ISSUED

24 Feb 2017

4. TYPE OF SOLICITATION

SEALED BID (IFB)

NEGOTIATED (RFP)

[ X ]

3. SOLICITATION NO.

W912DR-17-R-0001

Section B - Supplies or Services and Prices

PRICE SCHEDULE

PRICE SCHEDULE

PRICE SCHEDULE – YEAR 1 – DATE OF AWARD*

Item Estimated No. Description Quantity Unit Unit Price Amount

0001 All costs in connection with JOB $_____________ Mobilization, Demobilization, Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and Specified for Dalecarlia 30 MG Clearwell.

0002 All costs in connection with Pumping, Handling, Dewatering, Transportation, and disposal of lime sediments, complete as shown and specified for the 30 MG Clearwell.

0002AA First 2,000 Cubic Yards 2,000 CY $__________ $_____________

0002AB Over 2,000 Cubic Yards 400 CY $__________ $_____________

0003 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

15 MG Clearwell.

0004 All costs in connection with

Dewatering, Transportation, and disposal of lime sediments, complete as shown and specified from the 15 MG Clearwell.

0004AA First 300 Cubic Yards 300 CY $__________ $_____________

0004AB Over 300 Cubic Yards 100 CY $__________ $_____________

0005 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and Specified for McMillan North Clearwell.

0006 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

South Clearwell.

0007 All costs in connection with

Dewatering, Transportation, and disposal of lime sediments, complete as shown and specified from McMillan

0007AA First 1,000 Cubic Yards 1,000 CY $__________ $_____________

0007AB Over 1,000 Cubic Yards 200 CY $__________ $_____________

0008 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and specified for Third High Reservoir.

0009 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and specified for Second High

0010 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and specified for First High

TOTAL PRICE FOR YEAR 1 $_____________

*It is anticipated that a maximum of three clearwells/reservoirs in a given year. It is not guaranteed that any locations will be cleaned in a given year. Please note that a particular clearwell/reservoir may be cleaned more than once in a given year.

PRICE SCHEDULE – YEAR 2*

1001 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

1002 All costs in connection with

Dewatering, Transportation, and disposal of lime

1002AA First 2,000 Cubic Yards 2,000 CY $__________ $_____________

1002AB Over 2,000 Cubic Yards 400 CY $__________ $_____________

1003 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

1004 All costs in connection with

Dewatering, Transportation, and disposal of lime sediments, complete as

1004AA First 300 Cubic Yards 300 CY $__________ $_____________

1004AB Over 300 Cubic Yards 100 CY $__________ $_____________

1005 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

1006 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

1007 All costs in connection with

Dewatering, Transportation, and disposal of lime sediments, complete as

1007AA First 1,000 Cubic Yards 1,000 CY $__________ $_____________

1007AB Over 1,000 Cubic Yards 200 CY $___________ $_____________

1008 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and

1009 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and

1010 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and

TOTAL PRICE FOR YEAR 2 $_____________

* It is anticipated that a maximum of three clearwells/reservoirs in a given year. It is not guaranteed that any locations will be cleaned in a given year. Please note that a particular clearwell/reservoir may be cleaned more than

PRICE SCHEDULE –YEAR 3*

2001 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

2002 All costs in connection with

Dewatering, Transportation, and disposal of lime

2002AA First 2,000 Cubic Yards 2,000 CY $__________ $_____________

2002AB Over 2,000 Cubic Yards 400 CY $__________ $_____________

2003 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

2004 All costs in connection with

Dewatering, Transportation, and disposal of lime sediments, complete as

2004AA First 300 Cubic Yards 300 CY $__________ $_____________

2004AB Over 300 Cubic Yards 100 CY $__________ $_____________

2005 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

2006 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, Complete as Shown and

2007 All costs in connection with

Dewatering, Transportation, and disposal of lime sediments, complete as

2007AA First 1,000 Cubic Yards 1,000 CY $__________ $_____________

2007AB Over 1,000 Cubic Yards 200 CY $__________ $_____________

2008 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and

2009 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and

2010 All costs in connection with JOB $_____________

Pumping, Cleaning, Pressure Washing, Disinfection, complete as shown and

TOTAL PRICE FOR YEAR 3 $_____________

* It is anticipated that a maximum of three clearwells/reservoirs in a given year. It is not guaranteed that any locations will be cleaned in a given year. Please note that a particular clearwell/reservoir may be cleaned more than

Section C - Descriptions and Specifications

PERFORMANCE WORK STATEMENT

IDIQ Contract Clearwell Reservoir Cleaning Service Contract for

Washington Aqueduct U.S. Army Corps of Engineers (USACE)

Baltimore District

02 FEB 2017

PERFORMANCE WORK STATEMENT

Table of Contents:

Section 1: General

1.1 Background Information

1.2 Management Requirements

1.3 Requirements Prior to Mobilization

1.4 Basis of and Residuals Quantities

1.5 Definitions

Section 2: Description of Work

2.1 General

2.2 Execution

2.3 Draining, Pumping, and Entering the Reservoirs

2.4 Cleaning Operations

2.5 Handling and Disposal of Solids

2.6 Disposal of Dewatered Material

2.7 Inspection

2.8 Disinfection of Clearwells and Reservoirs

2.9 Site Specific Conditions

Section 3: Management, Quality Control, and Schedule

3.1 Management Requirements

3.2 Employee Compliance and Conduct

3.3 Quality Control

3.4 Submittals

3.5 Contingencies

3.6 Schedule

Section 4: Security, Safety and Accidents

4.1 Safety Requirements and Report

4.2 Damage Report

4.3 Accident Reporting

4.4 Spills and Leakage Cleanup

4.5 Protection of Government Property

4.6 Suspension of Operations

4.7 Facility Security and Access Requirements

4.8 Government Furnished Items

4.9 Contractor Furnished Items

Performance Work Statement

1. GENERAL

1.1 BACKGROUND INFORMATION: The Washington Aqueduct Division maintains and operates the Dalecarlia and McMillan Water Treatment Plants (WTP), from which approximately one million people in the District of Columbia and Northern Virginia are served with reliable and safe potable water. Raw water diverted from the Potomac River flows through two conduits and discharges directly into the Dalecarlia Forebay. The water in the Forebay is pumped into the Dalecarlia Reservoir via a booster pumping station. The water from the Dalecarlia Reservoir is distributed to both the Dalecarlia Plant and, via the Georgetown Reservoir to the McMillan Plant.

At the Dalecarlia WTP, after filtration, the water flows via a 15 million gallon (MG) Clearwell into a 30 MG Clearwell. Finished water from the 30 MG Clearwell is then pumped out to the public via distribution zone reservoirs.

The process is similar at the McMillan Plant. Water initially flows from the Dalecarlia Reservoir via the Georgetown Conduit to the Georgetown Reservoir for sedimentation purposes. From the Georgetown Reservoir, the water flows through the City Tunnel to the McMillan Reservoir. From there it is pumped through a filtration building and the filtered water flows via the North Clearwell to the South Clearwell.

The Washington Aqueduct also maintains 3 distribution reservoirs, which are supplied with water pumped from the Dalecarlia WTP into one of 3 pressure distribution zones, and provide peak demand storage for the city.

The Washington Aqueduct has determined that it is necessary to establish a multi-year, maintenance cleaning contract that encompasses each of the potable water systems buried storage reservoirs. In general terms, the work shall consist of providing all necessary equipment to safely access each reservoir and perform dewatering, dechlorination, cleaning, and disinfection of the reservoir, as well as waste disposal of lime and sediment residuals.

The Washington Aqueduct is a self-supporting operation of the Corps of Engineers, and funds for operation and maintenance are derived solely from the sale of water.

LOCATION: The Washington Aqueduct facilities are located at the following locations:

Dalecarlia Water Treatment Plant, 15 MG Clearwell and 30 MG Clearwell - 5900 MacArthur Boulevard, NW, Washington, D.C. 20016 McMillan Water Treatment Plant, North Clearwell and South Clearwell - 2500 First Street, NW, Washington, D.C. 20001 First High Reservoir, 1980 Foxhall Road, NW, Washington, D.C. 20007 Second High Reservoir, 4420 Warren Street, NW, Washington, D.C. 20016 Third High Reservoir, 3901 Donaldson Place, NW, Washington, D.C. 20016

The scope of this Performance Work Statement is for the above referenced Clearwell and Reservoir Cleaning services for the U.S. Army Corps of Engineers, Washington Aqueduct, in Washington, DC. The Contractor shall provide all supervision, labor, equipment, materials, permits, licenses, and any other resources necessary for the proper performance of this requirement contract. The Contractor shall perform all work within the interior of the Clearwell and Reservoir during the outage period initiated by the Government in the durations indicated. The work at the North Clearwell and 15 MG Clearwell may only be completed during an annual outage in the March-April time frame. The period of performance shall be maximum of three years from date of award. It is anticipated that up to 3 locations may be cleaned in any year. However, there is no guarantee that any location will be cleaned in a given year. Individual locations may be cleaned more than once.

1.2 MANAGEMENT REQUIREMENTS: The Contractor's work and responsibility shall include all Contractor planning, programming, administration, and management necessary to provide services as specified.

The work shall be conducted in accordance with the specifications stated in this contract and all applicable Federal, State and Local laws, regulations, codes, or directives. The Contractor shall perform all related Contractor administrative services necessary to perform the work, to include the following: furnishing of material, labor, quality control, Contractor financial control, and maintenance of accurate and complete records, files, and libraries of documents to include Federal, state, and local laws, regulations, and codes which are necessary and related to the functions being performed. The Contractor shall provide related services such as preparing and providing required reports, compiling historical data, performing administrative activities and submitting necessary information as specified. Tasks shall be performed in such a manner as to conform to the standards specified herein. The Contractor shall be responsible for providing all supervision, labor, equipment, materials, permits, licenses, and any other resources necessary for the proper performance in accordance with the contract.

1.3 REQUIREMENTS PRIOR TO MOBILIZATION: The Contractor shall ensure that all requirements and plans for the pumping, confined space entry, cleaning, dechlorination, disinfection, and residual material handling and disposal activities as defined within the scope of work and are fully understood. It shall be the Contractor’s responsibility to develop an appropriate work plan, which meets these requirements and submit said plan for approval. The work plan and performance are subject to Government acceptance by Washington Aqueduct.

SUBMITTALS: Prior to mobilization to perform any specific tasks, the contractor shall prepare, and obtain approval, for pre-cleaning submittals and shop drawings indicated in Section 3.4. The submittals shall be submitted within the time indicated in the attached deliverable table.

1.4 BASIS OF PAYMENT AND RESIDUALS QUANTITIES: Payment will be made for all work, complete and as specified, in connection with the pumping, cleaning, inspection, and disinfection of the reservoir under each item. The Contractor will be paid per unit price, for each cubic yard of in place sediment actually removed, handled, and disposed, where indicated on the price schedulet for particular reservoirs, and in accordance with the invoice. Measurement will be made based on differences between the pre-survey baseline and post cleaning inspection.

INVOICES: Invoices shall be submitted to the COR complete with supporting documentation. Payment shall be made within the required time starting with the receipt of a proper invoice.

ESTIMATED QUANTITIES: The quantities stated herein are estimated amounts of lime residuals and sediment to be removed and disposed. They are not guaranteed amounts but are given only as a general guide for the preparation of the Contractor's proposal. These approximate quantities represent the best estimates of Washington Aqueduct and are based on an engineer's estimate of actual volumes in place.

SUBSTANTIAL COMPLETION: The work at each reservoir shall be substantially complete after verification of the final cleaning, receipt of a complete series of negative bacterial test results, and confirmation that the reservoir has a total chlorine concentration suitable for return to service, as indicated in this scope of work. All cleanup, site restoration, and demobilization shall be completed within 14 calendar days from substantial completion.

1.5 DEFINITIONS: As used throughout this Performance Work Statement (PWS), the following terms are defined:

CONTRACT DISCREPANCY REPORT (CDR) DA FORM 5479-R: A formal, written documentation of Contractor non-conformance or lack of performance for contracted work. Usually issued after an attempt has been made to resolve a performance issue at the Project Manager and Contracting Officer’s Representative (COR) level and a more formal resolution is needed.

SURVEILLANCE: Planned, or random, observations of the timeliness, accuracy, completeness, and/or quality of services performed by the Government.

UNIT PRICE - WORK: This level of work is defined as all residuals handling and disposal activities. Included in this level of work are planning, project management, hauling and disposal operations, supervision, overhead, profit, and recurring work. All labor, materials, and equipment required to execute work required under this level of work are the Contractor’s responsibility and are to be included in their unit prices.

CONTRACTING OFFICER’S REPRESENTATIVE (COR): A person, specifically appointed by the Contracting Officer, with specific authority to verify contract compliance.

SEDIMENT: Residuals or solid waste to be cleaned from the reservoir or produced as a result of the cleaning process, including, but not limited to: dirt, sand, silt, calcium, lime, and biomass.

RESERVOIR: Structure containing water, including both potable water distribution reservoirs and filtered water clearwells. References to the reservoirs shall include the filtered water reservoirs at Dalecarlia and McMillan Water Treatment Plant as well as the distribution reservoirs.

OUTAGE DATE: The date the Government anticipates that the indicated reservoir has been taken out of service for the Contractor to begin work requiring access to the interior of the reservoir. For reservoirs which will be drained by Government operation of gravity drains, the actual date will be defined by a water level 24” or less. For reservoirs requiring the Contractor to perform preliminary pumping, the actual date will be defined as the date the Contractor is allowed to place his equipment into the reservoir.

2. DESCRIPTION OF WORK:

2.1 GENERAL: All work shall be conducted in accordance with the Performance Work Statement along with any specifications of this solicitation.

SCOPE: The Contractor shall provide cleaning services as described herein. This work shall include the planning, programming of services, and ancillary tasks necessary for the pumping, dechlorination, cleaning of interior reservoir surfaces, removal, transportation, and disposal of any sediment and waste residuals, disinfection, testing, and compliance with safety, records, and reporting requirements.

FACILITIES: In general, the reservoirs to be cleaned by the Contractor are buried concrete structures, used for the storage of filtered and potable water, consisting of column supported roof slabs with limited interior access. They are located on secure facilities with gates and limited staging or storage space. The interior of the reservoirs are considered a confined space. The Contractor shall comply with all Confined Space Entry, Security, and Sanitary regulations as described in EM 385-1-1 and as required by the Occupational Safety and Health Administration

(OSHA).

CONTRACTOR LAYOUT: The Washington Aqueduct has indicated areas in the proximity of each facility, on the attached site drawings, Attachment B, SK-1 to SK-3, which may be used for staging, storage, water supply, and pumping discharge. The Washington Aqueduct is not responsible for the security or disposition of any materials or equipment stored onsite. Water supply utilities and pumping discharge shall be utilized only as specified or directed, based on local use regulations. The contractor shall make provisions for providing their own power supply.

EQUIPMENT RESTRICTIONS: The roof slabs of each of the structures to be cleaned are elevated slabs supported by a series of columns. The roof slabs are subject to Live Load weight restrictions of 150 psf, or as further specified in the contract documents. The Contractor shall avoid operating motorized equipment over the roof slabs of the reservoirs. The structures to be cleaned under this contract provide for the storage of filtered and potable water.

Any equipment or materials used within the interior of the reservoir or tank shall be approved for use in contact with potable water by the National Sanitation Foundation (NSF). No motorized or hydraulic equipment or machinery containing oils, fuels, or lubricants, or other non-NSF approved fluids shall be placed inside the reservoir or tank. The Contractor shall provide proper means for sanitizing/disinfection of shoes, equipment and other items that will come in contact with the interior surface of the reservoirs to prevent any contamination.

2.2 EXECUTION: The contractor shall perform the following, as described in this PWS.

2.3 DRAINING, PUMPING, AND ENTERING THE RESERVOIRS: Washington Aqueduct employees will operate all valves, and water isolation gates. The reservoirs shall be drained to allow entry to the reservoirs as indicated in Section 2.9 below. The Contractor shall be responsible for removing any remaining water to facilitate the cleaning and inspection of the reservoir. The Contractor should expect some shallow water due to the sloping and contours of the floor slab. The COR will coordinate draining activities with the contractor.

PUMP DISCHARGE: The contractor shall remove sediments and remaining water from the reservoirs. All water shall be disposed into sanitary, combined sewers, or as otherwise indicated. The Contractor shall install facilities to capture any sediments from flowing into the combined sewer/sanitary sewer, for disposal off site, by the Contractor.

No materials which are not NSF 61 approved for use with potable water may be discharged.

CLEANING WATER: Wastewater from the cleaning process shall not be drained into the existing storm drains.

The contractor shall remove the wastewater from the reservoirs and discharge it into the nearby sanitary or combined sewer. Wastewater shall be discharged at a rate that does not create flooding of the sewer beyond its capacity. The wastewater shall have sufficient water, not less than 100 gpm, so that sediments do not settle into the sewers. The wastewater discharged into sanitary or combined sewers shall comply with D.C. Law 6-95, the Wastewater Regulation Amendment Act of 1985, as amended. This act prohibits the discharge of wastewater into a separate storm sewer system or streams. Solid debris shall not be disposed of into sanitary or combined sewers.

PUMPING DURING CLEANING: Pressure washing residuals generated from the cleaning phase of the reservoir shall be collected and pumped as indicated on the drawings. At no time may residuals or discharge be conducted to the drain unless otherwise indicated. Leakage from the existing influent and effluent sluice gates is to be expected.

The Contractor shall plan to continuously run pumps to control sluice gate water leakage, and convey the discharge to locations as approved in the work plan. Solids from the cleaning process shall be pumped to removal equipment, located in the contractor's staging area where shown on the Site Plan, for handling and transportation to a government approved disposal site.

SOLIDS AND SEDIMENT: The Contractor is solely responsible for the removal and disposal of any existing sediment within the reservoir or other debris resulting from their operations. Depths of sediment may vary. It is expected that there will be less than the equivalent of ¼-inch of existing sediment on the floor distributed throughout the reservoir, except as noted. The volumes of sediment in the clearwells are noted in Section 2.9. All material removed from the reservoir shall be removed by an approved method. All material removed from the reservoir shall be contained prior to disposal. Such material must be removed off site to an approved disposal area.

The Contractor shall comply with all local, state, and Federal regulations regarding the transport and disposal of solid wastes. The Contractor shall advise himself of all applicable regulations and shall undertake the necessary testing in order to comply with said regulations. The Contractor shall pay for all costs associated with testing, permits and disposal of solid wastes generated as a result of the project.

VENTILATION: The contractor shall provide all necessary equipment and materials to enter and work in the reservoir and clearwell safely. The contractor shall be responsible for ventilation and air monitoring until final inspection has been performed and approved.

PROTECTION OF CONNECTING PIPES: Immediately after the storage reservoir is drained and made available to the Contractor, the Contractor shall seal the reservoir inlet/outlet pipe in a manner that will prevent any debris from entering the inlet/outlet pipe.

RESERVOIR LAYOUT: It shall be the Contractor's responsibility to develop an efficient methodology that suits the layout of the reservoir to collect and transport the solid sediment to the removal equipment. The Contractor will not be allowed to remove any of the existing baffle wall panels to expedite solids removal from the reservoir. Any unidentified items or structures found within the limits of the reservoir shall not be disturbed nor shall removal be performed at these locations unless, and until, approved by the Contracting Officer.

2.4 CLEANING OPERATIONS: The Contractor shall provide all necessary equipment and procedures necessary to remove all sediment from the reservoir and then he shall pressure wash all surfaces (i.e. walls, columns, and sluice gates, etc.). The cleaning process shall conform to American Waterworks Association (AWWA) Standard C-652, Disinfection of Water-Storage Facilities. All surfaces (i.e. walls, columns, influent, effluent and drain sumps and valves) of the reservoir that come in contact with the water when the reservoir is filled to capacity/overflow elevation shall be cleaned by high-pressure water jets, maximum pressure 2,500 PSI. The Contractor may use higher pressure to reach higher elevation of the walls and columns provided it does not damage the finished concrete surface. Surfaces shall be cleaned by application of high-pressure water without the use of cleaning solutions or detergents. The intent is to clean the interior surface of the reservoir, and not damage the concrete or coating surface. Prior to cleaning the entire storage facility, the Contractor shall clean a 100 SF area with detailed inspection performed by the COR to confirm adequate pressures and flow rate for cleaning. In general, pressures shall be a maximum of 2,500 PSI at 4-6 GPM flow rate with a standard fan nozzle. The reservoirs shall be cleaned thoroughly using potable water with a maximum 2,500 PSI pressure, sweeping, scrubbing or equally effective cleaning methods without damaging concrete surfaces. The Contractor shall clean all walls, floors, ceilings, pits, pipes, columns, and beams. The cleaned reservoirs shall not contain any sediment, water, mildew, algae, black spots, rust spots, or debris. Water shall be fully contained, collected and disposed of properly. New squeegees and push brooms shall be used in each storage vessel. Floors and sumps shall be hosed clean to remove all sediment deposits. Work shall be performed in an expedited manner so as to minimize the time the reservoir is out of service.

2.5 HANDLING AND DISPOSAL OF SOLIDS: The work consists of furnishing and operating all equipment necessary to remove the sediment, dewater it, as necessary, and then transport it to an approved disposal location. The Contractor may remove the material mechanically, by pump, or by vacuum as determined to be most efficient. The material may be dewatered on-site, or transported wet (water tight), consistent with the dewatering and transportation requirements specified, or required by local transportation regulation or the approved receiving facility.

PRELIMINARY SURVEY: Before beginning cleaning operations within the reservoir, a survey of the volumes of existing sediment shall be performed. While the reservoir is in service, lime is deposited within the reservoir through lime application or precipitated hardness. The lime volume measurements indicated are the results from a previous surveys and estimates. However, the total quantity of lime provided for removal in the Unit Price Schedule is an estimated quantity of lime that will be found in the clearwells. Hence, prior to starting any lime removal work, the Contractor shall provide the government with the quantity of lime to be removed. The Contractor shall do this by performing a field survey of the lime in the clearwell, in the presence of the Government during which, lime depth measurements throughout the clearwell will be recorded and used to calculate the total quantity of in-situ lime. Progress payments will be made only for the quantity of lime removed based on the surveyed volume of lime.

LIME REMOVAL: The Contractor shall not be allowed to start lime removal operations until he has completed all preparations and has approval for all submittals, as indicated in the attached Delivery Table, Attachment A, permits and other items required in these specifications. Lime sediment shall be removed from all areas inside the clearwell including the influent, effluent and drain sumps. At no time during the removal phase, will any lime sediment, or filtrate, be discharged into the clearwell drain line or via the pumps used to control water leakage. All lime sediment shall be pumped to the dewatering units, or vacuum trucks, which will be setup in the designated Contractor's staging area. The Contractor shall ensure the lime residue in the water pumped, due to sluice gate leakage, and the filtrate from the dewatering units does not exceed one percent solids by weight. All these materials shall be piped and pumped to the discharge points shown on the drawings. It shall be the contractor's responsibility to clean up any lime found deposited in the discharge structures. The Contractor shall submit to the Government for approval a plan detailing the discharge piping system. Submittals shall be accompanied with catalog cuts, sketches and/or drawings drawn to scale.

EQUIPMENT: The Contractor shall remove the lime by vacuums, push or pull pumps, conveyer belts, shovels, buckets or small mechanical equipment. Equipment that emits fumes or spills that could contaminate the air or space are prohibited. The size of the equipment is limited by the size of the access hatches (see drawings for sizes).

The hydraulic system to any mechanical piece of equipment in the reservoirs shall use food grade vegetable oil.

Refueling of any equipment will not be permitted in the reservoirs.

CHARACTER OF MATERIALS: The material to be removed under this contract has accumulated since the reservoir was last cleaned. The material consists principally of lime and filtered water sediment. The lime did not dissolve and has settled to the reservoir floor over the years. Harder, solidified layers and variations in the sediment composition are to be expected. The Contractor may use water pressure, manual labor, small mechanical equipment or other Government approved method to break-up any harder, solidified layers of lime sediment to facilitate removal. Equipment shall be submitted to the Government for approval. Attachment E of these specifications shows the results of a lab analysis performed on samples of the lime.

DEWATERING EQUIPMENT: The Contractor shall furnish all the equipment necessary for the dewatering of the sediment for suitable transport and disposal. The number and size of dewatering units and other equipment shall be adequate to remove the volume of sediment and as required to finish the project within the time frame allotted. The Contractor shall submit for approval layout drawings and operating data describing the complete dewatering equipment and plant with sizes, weights, capacities, and number of units that he will be using throughout the project. The Contractor shall ensure that all his dewatering plant equipment and his office trailer fit within the footprint of designated storage and staging areas at each reservoir location. The contractor's staging area shall be enclosed in temporary chain link fencing. Detailed calculations shall be submitted to the Government for approval of proposed daily and weekly productions.

CONVEYANCE OF SOLIDS: After the material is removed from the clearwell, it shall be carried through pipes or transported to the dewatering units. Transporting or piping the lime to the dewatering units shall be a clean operation. No leakage shall be allowed from pipe(s). If a leak occurs during removal and dewatering operations, the Contractor shall stop work and repair the leak immediately. Piping shall be routed to avoid roadway crossings.

Should the piping be required to cross a roadway, the piping shall be ramped sufficiently to not impede vehicle traffic, but shall not be steeper than 12:1 horizontal to vertical slope. The Contractor shall indicate locations of ramps in his work plan layout drawings.

DEWATERING OPERATIONS: Dewatering operations shall be accomplished through Contractor provided portable mechanical dewatering units. The sediment may be mixed with a polymer, provided that the polymer is suitable for use with potable water. The Contractor shall submit to the Government, for approval, the polymer intended for use. The polymer shall be acceptable for use in potable water and be approved by the National Sanitation Foundation (NSF-61). Submittal shall have complete information, characteristics about the product, mixing proportions, and proposed feed rates. The Government reserves the right to reject the use of polymer containing acrylamide.

CAKE MATERIAL PRODUCTION: Cake material resulting from the filter presses shall be carried to leak-proof trucks and/or leak-proof roll-off bins. Once the truck or roll-off is full, it shall be immediately replaced so as not to halt progress of the dewatering operation. At no time during the operation will the cake material be stockpiled or stored awaiting removal. The Contractor shall ensure that cake material is not spilled in the contractor's staging area or in any other place. The Contractor shall take all necessary precautions to maintain a clean environment and operations within Washington Aqueduct boundaries and along transportation routes.

FILTRATE TESTING: The Contractor shall hire an independent laboratory to sample and test the water being discharged from the dewatering units and the pumps installed to control leakage, or other liquide waste stream from the cleaning and sediment handling operations. A ¾” sample collection fitting and valve shall be provided on all return water pipes from which the lab can take samples. A sample shall be taken at random once a week from each discharge line and results of this test shall be submitted to the Government for approval. Water being discharged into the discharge structure shall not exceed 1.0% (one percent) total suspended solids by weight. If results from the laboratory show that this level has been exceeded, the Contractor shall make the necessary changes to achieve the required water quality. If the Contractor does not comply with the water quality limits, he shall be ordered to stop operations until tests confirm that solids limits are below the indicated limits.

2.6 DISPOSAL OF DEWATERED MATERIAL: Solid waste, residuals, and sediment removed from the reservoirs shall be the responsibility of the Contractor to properly dispose.

TRANSPORTING OF MATERIALS: All vehicles and/or roll-off bins used to transport dewatered material shall be sufficiently sealed to prevent leakage or spillage of cake material. Transport vehicles shall be the type(s) approved for this application by the Department of Environment of the state(s) in which they will be traveling. The Contractor shall submit evidence or certification from the state that the transport vehicles are approved.

TRANSPORT ROUTES AND WEIGHTS: Transport routes shall avoid heavily populated areas whenever possible.

It shall be the responsibility of the Contractor to familiarize themselves with allowable trucking routes from the different sites. Vehicles shall be loaded within all legal weight limits. It shall be the sole responsibility of the Contractor and his drivers to monitor the loading of each truck and order a cut-off at such time as to insure a legal weight. Any violation of weight regulations or traffic laws shall be the sole responsibility of the Contractor. The Contractor shall drive in a safe, courteous, and considerate manner in full compliance with all local and interstate speed limits and traffic regulations. The use of a “Jake Brake” shall be minimized while driving on neighborhood roads within the Beltway. Washington Aqueduct reserves the right to request alternate drivers if these requirements are not met.

DISPOSAL RESPONSIBILITIES: During the disposal operations, the Contractor's duties and responsibilities shall include, but not be limited to:

a. Inspection of transport vehicles daily to ensure that tailgates are property sealed, trailers are properly covered, equipment valves are in proper working order, vehicle fluid levels are correct, and that all brake lights, turn signals, and other such equipment are in proper working condition.

b. Inspection of vehicles before leaving the staging area and before leaving the disposal site to ensure that vehicles, including tires, are properly cleaned of cake material, trash or soil which might be deposited on WA grounds or roadways. Any such material will be removed either manually or mechanically.

c. Disposal shall be in accordance with all Federal, state and local laws.

d. Residuals shall be picked up, hauled, and disposed of by the Contractor. As part of the pick-up activity, the Contractor shall be responsible for establishing a wash station and washing his trucks. He shall ensure that solids are not deposited on government property or neighborhood streets as the loaded trucks travel to their selected offsite disposal site. If necessary to facilitate offsite disposal at the selected remote site(s), the Contractor shall also be responsible for temporary offsite storage of residuals prior to final disposal.

2.7 INSPECTION: The contractor shall provide assistance for Government personnel to inspect the reservoir, both during the execution of the work and for the inspection of the reservoir after the completion of the work.

NOTICE: The contractor shall provide a written notice to the Contracting Officer’s Representative (COR) when a reservoir is initially clean and ready for inspection. The COR shall inspect the cleaning operations.

INSPECTION EQUIPMENT: After the initial cleaning operation, the Contractor shall provide walkie-talkies, a portable cellular phone, barriers, scaffolds, ladders, lights, fresh air supply, gas monitors, and any other equipment necessary for a safe environment for the inspection of each facility.

STAGING AND OBSTRUCTIONS: Furnishing, erecting, dismantling, and removing all rigging and scaffolding on the interior of the storage reservoir required for all work shall be the responsibility of the Contractor. Scaffolding and rigging shall be erected in a manner that will permit access for visual inspection of all interior surfaces.

INSPECTION ASSISTANCE: The contractor shall provide a crew of three men, including all materials and equipment to assist during the inspection of each facility. The work shall consist of, but not be limited to:

a. moving or holding scaffolds, ladders, lights, tapes;

b. passing tools;

c. cleaning surfaces;

d. bringing materials in and out of the reservoir;

e. operating the generator for lights, air blowers, pumps and any other necessary equipment.

TIMING OF INSPECTION: After each reservoir or tank is cleaned and prior to disinfection, the Contractor shall provide access for the Government and consultants to perform a detailed inspection of the facility. The Contractor should provide entry permit, certified attendant, lighting, ventilation, scaffolding and necessary equipment. The Contractor shall provide access for two workdays (8 am to 5 pm) over a five (5) day period for the inspection. The Contractor shall coordinate with the COR at least 2 weeks in advance.

PROGRESS INSPECTIONS: The Contractor shall maintain access for Government personnel to make periodic or regular inspection of the progress of the work at the Government’s discretion. The Contractor’s attendant for Confined Space Entry shall provide the services necessary to facilitate progress inspections by the Government in compliance with the Confined Space Entry permit.

FINAL INSPECTION: Upon completion of all work, but prior to disinfection, a final inspection of the site will be undertaken at which time representatives of the Government and Contractor will be in attendance. Any unsatisfactory cleanup will be indicated and the Contractor shall promptly and properly correct all such deficiencies to the satisfaction of the Government. After the correction of such deficiencies a re-inspection may be necessary.

Upon final acceptance of all work, the Contractor shall fully demobilize from the project site.

2.8 DISINFECTION OF CLEARWELLS AND RESERVOIRS: The interior of the reservoir shall be thoroughly power washed as described above and all sediment, debris and other materials shall be removed. At the conclusion of all work, and prior to disinfection, the Contractor shall remove all unused material, equipment, debris, and unwanted evidence of construction from the storage reservoir interior and from the work site. Any plugs shall be removed from the inlet/outlet pipes and the pipes and sumps shall be completely cleaned from any sediment or debris and flushed with clean water. The contractor shall remove all equipment and materials after the inspections are completed. The reservoirs shall be cleaned as necessary to remove residual debris and materials before disinfection.

REINSTALLATION OF VENTS AND HATCHES: Following the final cleaning operation, the contractor shall check and put in satisfactory condition the vents, screens, overflow screens, and any other screened openings to prevent birds, insects, and other possible contaminants from entering the facility.

DISINFECTION METHOD: Where indicated in Section 2.9, after the final cleaning, the Contractor shall provide materials and labor to disinfect each reservoir indicated in accordance with the AWWA C-652. The Contractor shall submit a plan and procedure for the disinfection and testing of the reservoir with his work plan. The Contractor shall take into account the lack of gravity drainage at certain locations when preparing his disinfection plans for submittal. The Contractor shall be responsible for removing water with a disinfectant residual above the specified limits from the reservoir.

DISINFECTION TESTING: Washington Aqueduct will test water samples for odor, fecal coliforms, total coliforms, and chlorine residuals to determine if the water meets EPA requirements. Samples shall be taken after the reservoir has been filled to the overflow elevation, and again at 24 hours and 48 hours contact time. If any test fails to meet EPA requirements, the contractor shall remove all disinfected water from the reservoir at the Contractor’s expense. The contractor shall repeat the above requirements until each reservoir meets EPA requirements. Samples shall be taken by Washington Aqueduct personnel. The Contractor shall schedule the testing with the Government at least 72 hours in advance of the first test.

DECHLORINATION OF WATER: Where indicated in Section 2.9. The Contractor shall set up dechlorination equipment and properly dechlorinate all water released to storm drain facilities. The equipment shall be set up to establish a feed rate and mixing dynamics sufficient to completely neutralize any chlorine residual in the effluent water to non-detectable levels. Grab sample shall be taken and analyzed at the beginning of each day a discharged is made, and a second time at the midpoint of the daily discharge. The Contractor shall submit a plan for dechlorination with his Work Plan, as indicated in the attached Delivery Table, Attachment A.

2.9 SITE SPECIFIC CONDITIONS: The specific reservoirs and volume of work to be performed is as follows.

DALECARLIA 30 MG CLEARWELL FILTERED WATER RESERVOIR

a. The Government shall utilize its dewatering pump to drain the reservoir to within approximately 1’ of the bottom. The pump will then be shut off for the duration of the project.

b. Pumping effluent shall be conveyed to the 84” Junction Structure discharge point indicated on the attached drawings, Attachement B, SK-2. The rate of discharge shall not exceed 1800 gpm. The gravity drain for this reservoir will remain closed for the duration of the cleaning process.

c. The contractor shall remove, handle, and dispose of an estimated 2,000 cubic yards of in place lime residuals.

d. A description and plans of the reservoir are included in the Attachments.

DALECARLIA 15 MG CLEARWELL FILTERED WATER RESERVOIR

a. The Government shall drain the reservoir by gravity. The Influent and Effluent Channels do not drain by gravity. The Contractor shall be responsible for pumping out and cleaning the influent and effluent channels.

b. Pumping effluent shall be conveyed to the plant drain discharge points indicated on of the attached drawings. The rate of discharge shall not exceed 1800 gpm.

c. The Contractor shall remove approximately 300 cubic yards of lime residual from the clearwell.

d. A description and plans of the reservoir are included in the Attachments.

MCMILLAN NORTH CLEARWELL 14.6 MG FILTERED WATER RESERVOIR

a. The Government shall drain the reservoir by gravity. The floor elevation at the south end of the clearwell is approximately 1.5’ below the invert of the clearwell drain. The remaining water shall be pumped out by the Contractor.

b. Pumping effluent shall be conveyed to the discharge point indicated on the attached drawings, Attachement B, SK-2. The rate of discharge shall not exceed 600 gpm.

c. A description and plans of the reservoir (clearwell) are included in the Attachments.

d. The floor of the North Clearwell is sloped from north to south and towards the center from both the east and west walls. The influent gate has significant leakage, which can create fast shallow flows through the center of the clearwell. The Contractor shall anticpate the water leaking through the influent gate down the slope during the planning and execution of the work.

e. As part of the cleaning of the North Clearwell, the Contractor shall remove approximately 50 cubic yards of hardened lime from the lime mixing chamber and north clearwell influent pipe. A plant three (3) days during the cleaning of the North Clearwell. The lime material has hardened and may require mechanical and high pressure (exceeding 30,000 psi) cleaning to remove. The Contractor shall not damage the concrete wall and floors of the structure during the cleaning.

MCMILLAN SOUTH CLEARWELL 20.3 MG FILTERED WATER RESERVOIR

a. The Government shall drain the reservoir by gravity.

b. Pumping effluent shall be conveyed to the discharge point indicated the attached drawings. The rate of discharge shall not exceed 600 gpm.

c. The Contractor shall remove approximately 1,000 cubic yards of lime residual from the clearwell.

d. A description and plans of the reservoir are included in the Attachments.

FOXHALL FIRST HIGH 14.5 MG…