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HomeMy WebLinkAboutTraining and SOP Development for Odor Control Facilities at City Lift Stations City of Jeffersonville Government Contract Coversheet Please note:All information MUST be completely filled out and submitted to Clerk's Office within 48 hrs of execution. Date Submitted to Clerk: 9/8/2023 Department: Wastewater Vendor Name: Webster Environmental Assoc. Sign Date: 9/7/2023 Ending Date: 12/31/2023 Amount of Original Contract: $49,100 Is this an amendment or change order to original contract? Amended Contract Amount: Purpose: Training and SOP Development for Odor Control Facilities at City Lift Stations For Clerk's Office to fill out Date uploaded to Gateway: switRONMEN7-44 fink. WEBSTER ENVIRONMENTAL ASSOCIATES, INC. 13121 Eastpoint Park Blvd..Suite E ,\,r Louisville, KY 40223-4164 ,004117 Ass�iA S ,Nc• Tel:(502)253-3443 Fax:(502)253-3442 "Defining Odor Control Engineering" Web Site:http://www.odor.net Proposal to the City of Jeffersonville Odor Control Consulting Services by Webster Environmental Associates, Inc. September 1, 2023 INTRODUCTION The City of Jeffersonville (City) utilizes various odor control technologies throughout their wastewater conveyance and treatment facilities. These technologies vary from facility to facility but can generally be categorized into two types: liquid phase treatment and vapor phase treatment. Liquid phase treatment involves the purchase of chemicals which are added directly into the wastewater to prevent the formation and/or oxidation of odorous compounds (specifically hydrogen sulfide). These systems can be very effective but require regular dosage adjustments based on ever changing wastewater characteristics (such as flow rate, temperature, pH, sulfides, etc.). Currently the chemical dosage rates are set based primarily on the chemical vendor's recommendations. The City would like to have a more defensible method to ensure the most efficient use of the chemical budget. The City is currently spending approximately $250,000 per year on chemical addition. Vapor phase treatment refers to the capture and treatment of the odorous air and can be done using a biological, chemical, or physical system. In addition to regular maintenance, various parameters need to be monitored and adjusted (such as air flow rates, nutrient addition, or media replacement) to ensure these systems are working efficiently. The City currently utilizes a biofilter at the 10th St. PS and a bioscrubber at the Downtown WWTP. The City has requested this proposal from Webster Environmental Associates, Inc. (WEA) to provide odor control consulting services as described in the scope below. SCOPE TASK 1-ODOR CONTROL TRAINING The City currently oversees the existing odor control systems but little to no training has been provided for the current staff. Operating odor control systems requires a basic understanding of the formation of odorous compounds in the wastewater and an understanding of how each odor control technology works. WEA is an environmental engineering firm, who has specialized in odor control engineering for over 40 years. WEA proposes to assist the City in the training of this staff person. Training will consist of both classroom and field instruction with handouts on the basics of odor control and on the specifics of the Jeffersonville systems. WEA would also be available to answer questions as needed. Classroom training could be done either remotely or in-person. Potential topics to be covered are listed below: CLASSROOM TRAINING- ODOR CONTROL 101 1. Generation and Release of Odors from Wastewater 2. Air Emissions from Wastewater Systems 3. Minimizing Odor from Wastewater Collection Systems 4. Vapor Phase Treatment System Operations a. Bioscrubber Odor Control b. Biofilter Odor Control c. Carbon Odor Control d. Chemical Scrubber Odor Control 5. Liquid Phase Treatment Operations a. Calcium Nitrate Addition b. Magnesium Hydroxide Addition c. Hydrogen Peroxide Addition d. Proprietary Chemical Addition MATERIALS 1. EPA Design Manual, Odor and Corrosion Control in Sanitary Sewerage Systems and Treatment Plants, authored by Neil Webster and Bob Bowker. 2. WEF Manual of Practice, Control of Odors and Emissions from Treatment Plants FIELD TRAINING WEA will conduct up to four(4)site visits and conduct hands-on training for the following: 1. Hydrogen sulfide monitoring and data analysis techniques. 2. Chemical feed system performance testing and monitoring techniques. 3. 10th St PS biofilter performance testing techniques. 4. DWWTP bioscrubber performance testing techniques. TASK 2-SOP DEVELOPMENT In addition to training on the fundamentals of odor control, the development of Standard Operating Procedures (SOPs) for the management of odors is important for several reasons. SOPs are written instructions that describe how to complete a task or activity. An SOP for the 2 management of Jeffersonville's odor control system will clarify what needs to be done to effectively control odors and to ensure that there is an efficient use of resources (time and chemical). The SOP will provide specific guidance regarding the responsibilities of the City's staff and clarify what services the chemical vendor is required to provide. It is proposed that the SOP would include the following: 1. Chemical Feed Systems a. Brief, introductory overview of the source and potential impacts of odors from sewer collection systems. b. Description of the City's method(s)for controlling odors. c. Overview of the City's collection system and the location/type of odor control equipment. d. Summary of the key requirements of the chemical vendor. e. Daily,monthly, seasonal and annual responsibilities of the City Staff. f. Specific recommendations for a Condition Assessment which could be used to prioritize resources(Condition Assessment not included in this proposal). 2. Vapor Phase Systems (DWWTP Bioscrubber and 10 St PS Biofilter) a. Description of each system. b. Daily, monthly, seasonal and annual responsibilities of the City Staff. TASK 3-DWWTP BIOSCRUBBER CONDITION ASSESSMENT WEA will coordinate with the City and conduct an onsite condition assessment of the bioscrubber at the DWWTP. Condition assessment will include the following: 1. Measure inlet and outlet H2S concentrations 2. Measure air flow 3. Measure pressure at the following locations: Foul Air Intake, Media, and Fan 4. Visual inspection of media and spray nozzle(if accessible) 5. Measure pH of drain water 6. Verify irrigation cycle 7. Visual condition assessment of equipment and duct 8. WEA will also go through the system with Bioair on the phone to identify any components that need to be replaced WEA will prepare a report which shall summarize the findings of the condition assessment. The report shall include the current performance, system adjustments, and identification of needed system repairs (with costs from Bioair). The City can choose to order the parts and make the repairs themselves or utilize Bioair. 3 FEE SUMMARY WEA proposes to conduct the above Scope of Work for a total Lump Sum Fee of$49,100 which included all testing equipment, supplies, and professional time: Task Completion Date Lump Sum Fee Task 1- Odor Control Training October 31, 2023 $19,600 Task 2- SOP Development October 31, 2023 $26,900 Task 3- DWWTP Bioscrubber Condition Assessment October 31, 2023 $2,600 Total $49,100 ADDITIONAL SERVICES Although not include in this proposal, WEA could also provide these additional services if needed: 1. Conduct an odor study at a specific location within the collection system. An odor study would include field testing, analysis of data, and an odor control alternatives analysis. 2. Conduct a system-wide assessment of the H2S levels of the control point for each of the chemical feed systems. The assessment would provide data from all the sites for the same 2-week monitoring period. This information would provide an initial baseline for dosage adjustments. 3. Perform and document an assessment of the City's Odor Control systems. This assessment would determine several factors (including Sensitivity, Corrosion Potential, as well as available H2S data). This information would allow the City to have a defensible basis for the prioritizing of resources. 4. Develop recommendations for what should be provided in monthly reports from the chemical vendor. Prepared by: Accepted by: 1 1.4100 Jcitfee.... s, Vice President Len Ashack, Director Webster Environmental Associates, Inc. Jeffersonville Wastewater Department September 7,2023 September 7, 2023 4