RFP #12-9316-8KS

September10, 2012

REQUEST FOR PROPOSAL

SANITARY SEWER ODOR AND CORROSION CONTROL

DEPARTMENT OF PUBLIC UTILITIES

Your firm is invited to submit a proposal to provide complete turn-key services to supply, operate, monitor, and maintain dosing systems to cost effectively control aqueous hydrogen sulfide to specified target limits (vapor and liquid) at control points within the wastewater collection and conveyance system for the County of Henrico in accordance with the enclosed specifications. The submittal, consisting of the original proposal and seven (7) additional copies marked, "Sanitary Sewer Odor and Corrosion Control", will be received no later than 2:00 p.m., October19, 2012by:

IN PERSON OR SPECIAL COURIERU.S. POSTAL SERVICE

County of HenricoCounty of Henrico

Department of General ServicesDepartment of General Services

Purchasing Office ORP O Box90775

1590 E. Parham RoadHenrico,Virginia23273-0775

Henrico, Virginia23228

This RFP and any addenda are available on the County of Henrico website at: The Bids and Proposals link is listed under the Henrico Business Section on the home page. To download the IFB, click the link and save the document to your hard drive. To receive a printed copy of this document please call (804) 501-5660 or To receive an email copy of this document please contact

Time is of the essence and any proposal received after 2:00 p.m., October19, 2012whether by mail or otherwise, will be returned unopened. The time of receipt shall be determined by the time clock stamp in the Purchasing Office, Department of General Services. Proposals shall be placed in a sealed, opaque envelope, marked in the lower left-hand corner with the RFP number, title, and date and hour proposals are scheduled to be received. Offerors are responsible for insuring that their proposal is stamped by Purchasing Office personnel by the deadline indicated.

Nothing herein is intended to exclude any responsible firm or in any way restrain or restrict competition. On the contrary, all responsible firms are encouraged to submit proposals. The County of Henrico reserves the right to accept or reject any or all proposals submitted.

The awarding authority for this contract is the Board of Supervisors, County of Henrico.

A pre-proposal conference and site visits will be held on September26, 2012, at 10:00 a.m., in the Purchasing Office, NorthRunOffice Park, 1590 East Parham Road, Henrico, VA23228. Offerors are strongly encouraged to attend the pre-proposal conference in order to ask questions regarding the RFP requirements and to familiarize themselves with purchasing procedures. Only two representatives from each firm will be allowed to attend the meeting. A teleconference number has been established for suppliers who are unable to travel to the County of Henrico. To join the meeting, call 804-501-7555 and enter meeting ID #7002 and password 2123. It is limited to one call from each supplier. Refer to Attachment H for information about the site visits.

Questions concerning this Request for Proposal should be submitted to Ms. Marchelle Sossong, sos@co.henrico.va.us, no later than October 1, 2012.

Very truly yours,

Christopher Winstead, P.E.

Director of General Services

Kevin Steinbrecher, A.P.P., CPPB

Procurement Supervisor

804-501-5690

REQUEST FOR PROPOSAL

SANITARY SEWER ODOR AND CORROSION CONTROL

DEPARTMENT OF PUBLIC UTILITIES

I.PURPOSE AND GENERAL INFORMATION:

The purpose of this Request for Proposal (RFP) is to obtain the services from a qualified firm to provide complete turn-key services to supply, operate, monitor, and maintain dosing systems to cost effectively control aqueous hydrogen sulfide to specified limits (vapor and liquid) at control points within the wastewater collection and conveyance system for the Department of Public Utilities (DPU). The Successful Offeror shall provide all chemical supply and logistics, equipment systems, and on-going operational monitoring, sampling, reporting and maintenance services to successfully manage odors and corrosion within the sewer system. The Successful Offeror shall supply complete turnkey services including chemical dosing necessary for odor and corrosion control in the wastewater collection system. Chemical dosing systems are anticipated to include calcium nitrate(Bioxide®), ferrous chloride, hydrogen peroxide, and sodium hydroxide and other chemicals to cost effectively achieve specified program compliance requirements.

The sewer system has been susceptible to the formation of hydrogen sulfide and other odor causing materials due in part to the use of force mains transporting flow from the sewage pumping stations to the downstream trunk sewers. The County has been monitoring sewer pipeline wall thickness reductions in the wastewater collection system by CCTV inspections and other methods.

The existing wastewater system serving HenricoCounty includes a Water Reclamation Facility (WRF) with a capacity to treat 75 million gallons per day (mgd) of wastewater. Average flows are approximately 42 MGD. The system also includes a conveyance system comprised of approximately 1,420 miles of sewer pipelines and 24 sewage-pumping stations. A diagram of the County’s wastewater collection system is shown in Attachment C. The existing DPU sanitary sewer odor and corrosion control program includes the services being provided by a vendor through an annual services contract. The existing odor and corrosion control program includes the application of chemicals for control of hydrogen sulfide and other odors at 16 feed locations throughout the wastewater collection system. Not all sites are accessible by bulk tractor trailer equipment. All sites are accessible for bulk delivering volumes up to about 30 foot in length.

The County intends to award a contract for odor and corrosion control services to the Successful Offeror with an initial term of two years that may be renewed annually for a total term not to exceed five (5) years. Both odor control and corrosion are important. The Successful Offeror must be able to meet the limits as noted in the Section D Program Compliance and Treatment Requirements. The County plans to perform its own random testing to verify the compliance information provided by the Offerors and County wastewater customer odor control testing. Contract payments since the contract began in January 2011 through June 30, 2012 were $1,757,862.67.

HenricoCounty and GoochlandCounty have a utility service agreement which includes GoochlandCounty pumping sewage from western areas of HenricoCounty to the Gambles Mill Force Main as shown on Figure C-1. Sewage flow rates in this conveyance system range from 1 mgd to 13 mgd with an average flow of 1.49 mgd as shown in Table C-1. The utility service agreement includes requirements for Goochland to feed chemicals at the Goochland Pumping Station for downstream odor control. Chemicals that are currently being applied at the Goochland Pumping Station are shown in Table C-1. The chemicals being applied at the Goochland Pumping Station and the chemical feed rates are controlled by GoochlandCounty with input from HenricoCounty and the City of Richmond.

Attachment C includes additional information on the County’s wastewater collection system and odor and corrosion control system operational data for the past 12 months concerning chemical feed locations, chemical usage rates and measured hydrogen sulfide concentrations at the monitoring locations. Table 1 provides relative hydrogen sulfide production information for the HenricoCounty force mains. This data is provided for information purposes only to provide Offerors with typical data on the existing system. The data in this table was developed by the existing provider in July 2007 based on actual system operational data and was reviewed by HenricoCounty and accepted for use on the project. Offerors are encouraged to perform required sampling to evaluate proposed control systems in order to meet the requirements identified in this RFP.

TABLE 1
HENRICOCOUNTY
SULFIDE-GENERATING FORCE MAIN SYSTEMS
July 10, 2007
Force Main System / Predicted Sulfide Mass, lb/d / Predicted Sulfide Conc’n mg/L / Measured Sulfide, mg/L / Measured Avg. Headspace H2S, ppm / Peak Headspace H2S, ppm
Strawberry Hill, Chickahominy, Gillies Creek, Charles City Rd / 1620 / 6.46 / 0.8(1) / 574 / 700
Elko / 400 / 20.99 / 18-24 / - / -
Allens Branch, Rooty Branch / 105 / 10.24 / 1.5(2) / 43 / 213
Meredith Branch Force Main / 21 / 3.80 / - / - / -
White Oak / 76 / 8.14 / - / - / -
Beaverdam (Hanover Co.) / 48 / 1.92 / 0.08 (1) / 195 / 558
Upstream of River Road SPS / 67 / 1.20 / - / - / -
River Rd Lower Tuckahoe / 54 / 0.97 / 0.7 / 44 / 174
Gambles Mill / 78 / 1.08 / 0.9 / 0.7 / 16
Broadwater II / 15 / 2.5 / 1.3 (1) / 150 / 336
Broadwater I / 26 / 3.27 / 1.0 / 0.3 / 3
Almond Creek / 15 / 3.28 / 0.7 (2) / 19 / 119
VirginiaCenter / 3 / 4.3 / 1.0 (1) / 65 / 213
New Market / 13 / 1.3 / 0.2 (1) / 59 / 202
Holiday Branch Force Main / 11 / 15.70 / - / -
Totals / 2552
(1)Measured sulfide values significantly less than predicted due to high turbulence and release of H2S to headspace (note high headspace H2S concentrations).
(2)Measured sulfide values significantly less than predicted due to upstream addition of sulfide control chemical.

The following information will be available for inspection by Offerors at the Department of Public Utilities offices located at 4301 Parham Road. Visits shall be scheduled with Ms. Marchelle Sossong at (804) 501-7341.

  1. Sewer System Map
  2. Odor and Corrosion Control – Monthly Operation Reports

II.SCOPE OF SERVICES:

  1. General Requirements
  1. The Successful Offeror shall provide all labor, supervision, materials, equipment and incidental items required to control aqueous hydrogen sulfide within the wastewater collection system to the levels specified in Section II.D.

2.The Successful Offeror shall propose a chemical and/or biological treatment system(s) at various locations within the collection/conveyance system to meet specified target levels at key control points. The number and location of chemical dosing stations shall be determined by the Successful Offeror to attain the target levels at each of the 14 sampling control points specified in Section II.D.

3.Treatment methods proposed shall provide the continuous treatment between "dosing" locations. Foggers or other means of treating control locations alone will not be permitted. In addition, the proposed treatment system shall not produce a reduction of BOD, or alkalinity at the wastewater treatment facility. Typical ranges for these values are: BOD of 120 – 250 mg/L and pH of 6.5 – 7.2.

4.Within 60 calendar days of the contract execution, the Successful Offeror shall assume responsibility for chemical dosing at the sites where chemicalsare currently being applied and the current supplier will end its operations. Within 30 calendar days of the contract execution the Successful Offeror shall develop and start the implementation of a phased transition from the existing chemical feed systems at the16 existing and 1 newchemical feed locations. The chemical feed location will be transitioned from the current supplier to the Successful Offeror one site at a time over a 30 calendar day period. The transition plan shall include providing and starting up new chemical storage and feed equipment. The existing chemical storage and feed equipment owned by the current supplier are shown in Table C-1. They will be removed by the current supplier during the transition period. Chemical dosing may continue at these sites or such other locations that the Successful Offeror identifies to attain the levels specified at each sampling control point. The Successful Offeror shall provide continuous chemical feed capability at each of the existing chemical feed locations during the entire transition period. If the incumbentSupplieris selected for the new contract, said supplier will not be required to demobilize and then remobilize their equipment before providing services under the new contract provided that the existing equipment meets the technical requirements of the RFP.

5.The Successful Offeror shall achieve 90% compliance each month at each of the sampling control points. A reading that exceeds the target level at the required sampling control point on any day shall indicate a noncompliance event for that point. Each sampling control point shall be in noncompliance no more than three (3) days in any month. A penalty of $200 per day per sampling control point shall be assessed for noncompliance for each such point beginning on the fourth (4th) day of noncompliance in any month at that sampling control point. Penalty for noncompliance events will be assessed starting 30 days after the transition period has been completed at the individual sampling and control points. Penalties will not be assessed for noncompliance events that are due to factors that are completely outside the Successful Offeror’s control.

6.The Successful Offeror will be responsible for providing the resources as noted below:

Equipment

  • Chemical storage and dosing systems sized for optimum operation within the required dose range.
  • Provide 110% containment capacity for all chemicals. Existing chemical and dosing systems owned by the County are listed in Table C-1 and may be used by the Successful Offeror if of the appropriate size, material and containment needs for the proposed chemical feed system. Single walled tanks will not be acceptable even if the chemicals are non-hazardous.
  • Upgrades to the tanks and dosing systems to meet the requirements of these specifications.
  • Provide any improvements to existing equipment necessary to ensure proper system operation and chemical containment.
  • Provide adequate safeguards to prevent freezing of chemicals.
  • Responsible for the operation and maintenance of all County owned storage facilities, chemical feed equipment, piping, valves and other devices
  • Chemical storage and dosing systems that are currently in use at the other 7 locations shown in Table C-1 will be removed by the current supplier and shall be replaced by the Successful Offeror for use under the new Contract.
  • Chemical monitoring remote telemetry systems for storage/dosing equipment at all feed locations
  • Provide real time tank level monitoring equipment at all chemical storage facilities.
  • Aqueous Sulfide and headspace H2S monitoring instrumentation

Chemicals

  • Hydrogen peroxide (technical grade) delivered in bulk
  • Ferrous chloride solution (technical grade) delivered in bulk
  • Sodium hydroxide solution (technical grade) delivered in bulk
  • Alternative and/or supplemental chemicals (such as Bioxide®) as deemed necessary

Services

  • Project manager and field technician domiciled in the Richmond, VA area
  • Assistance in procuring HazMat storage permits
  • Equipment installation & start-up
  • Equipment maintenance and repair on chemical dosing systems
  • Chemical inventory management
  • Management of equipment systems (incl. adjustment/control of metering pumps)
  • Sampling and monitoring labor (including all associated reagents and instrumentation)
  • Program management (including interim data reports and final report)
  • Safety training for chemicals and equipment (start up and annually)
  • Alternate and/or supplemental chemical treatment alternatives as deemed necessary
  1. Equipment Specifications
  1. Fully outfitted storage tanks. The nominal tank capacity shall be as determined base on treatment requirements. The tanks shall be heavy-duty and designed to handle the chemicals being used. Provide storage tanks with 110% containment capacity. The proposed method for containment shall be submitted to the County for approval. Each tank shall be equipped with fill line, inspection ports, overflow pipe, and breather vents. Two modes of tank level measurement shall be used: an ultrasonic sensor triggers the high-level alarm (for overfill protection); and a pressure transducer feeds the chemical monitoring system for tank level display and remote inventory management through a telemetering system provided and operated by the vendor. Labels and placards conforming to local regulations shall also be provided. A single tank level monitoring system that will trigger the high level alarm AND feed the chemical monitoring system for tank level display and remote inventory management, is acceptable provided the system complies with federal Tier 11 emergency and hazardous chemical storage requirements.
  1. Metering pump systems. Metering pump systems shall include suction and discharge piping and valves and other control devices for a complete chemical feed system. The pumps shall be capable of accepting a remote signal via the monitoring/telemetry system to permit remote adjustments of feed rates, and programming of dose rate based on sewage flow rates. Standard fittings will include backpressure regulator, pressure relief valves, calibration assembly, and other devices needed for a complete system. Pump capacities shall be sized for the application. Provide a minimum of one installed spare pumping unit at each feed location.
  1. Chemical monitoring system shall provide monitoring of product inventory (in gallons), as well as providing remote communication regarding tank levels, pump performance, and pump diagnostics. The monitoring system shall allow custom feed rate profiles to be programmed into each metering pump matching sulfide loading rates to hourly dose rate changes. Pumps shall be capable of accepting a remote signal via the monitoring/telemetering system to permit remote adjustment of feed rates and programming of dose rate based on sewage flow rates. All pump control features shall be capable of being accessed and changed remotely via cell phone or landline modem provided by the Successful Offeror.

The proposed equipment shall meet or exceed the following specifications:

  1. Dial-out capabilities on telemetry for immediate notification / adjustment of chemical dosing to compensate for equipment malfunctions.

b.Power Distribution Panel which provides electrical tie-ins and emergency shut-off switch for all pumps and electronics.

c.Miscellaneous equipment, including safety shower and eyewash assembly, and lock box for storing spare parts, tools, safety equipment and operating manuals.

d.All chemical system equipment installation and system startup shall be provided by the vendor.

e.The chemical systems shall include chemical storage tank level monitoring and alarms to vendor through telemonitoring system operated and maintained by the vendor.

  1. Safety Equipment and Systems

Each chemical storage/dosing station shall be equipped with appropriate safety equipment including shower, eyewash, eye/face protection, gloves, aprons, etc.

a.Successful Offerorshall provide copies of MSDS information for all chemicals used and post the MSDS information at each site.

b.Successful Offeror to provide safety training on the chemicals used to County personnel.