Monthly Operating Report

Transcription

1 Executive Summary Wastewater Treatment Plant Operations staff is working with partners to evaluate 1) a system to automate control of the solids balance aspect of the treatment plant s activated sludge process and 2) testing a pilot scale system for new digester gas cleaning technology (with LBNL and Mosaic Materials) There were no NPDES violations during the month. There were no blending events. The monthly acute bioassay passed with 100% survival of the fathead minnows. There were two phoned in odor complaints logged and responded to by treatment plant staff. The first complaint (July 13) was of a bad odor on Cutting Blvd near the 580 on ramp. No odors or elevated H2S levels were noted by the investigator and the odor was not linked to the treatment facility. On July 27 an odor complaint was fielded and the address turned out to be a vacant lot at 5203 Colusa Ave. The resident did not answer phone when the investigator called during her response. No odors were noted by the investigator and there were no unusual odors or H2S measurements at the treatment plant. There were no fence line H 2 S alerts above the response threshold of 30 ppm. Table 1 Parameter Monthly Performance Indicators Limit/Target Treatment Plant Operations: Influent Flow, daily average (MGD) 4.53 N/A Effluent Flow, daily average (MGD) 4.79 N/A Influent BOD 5, avg. mg/l 348 N/A Influent TSS, avg. mg/l 390 N/A Effluent TSS, monthly average mg/l or less Effluent BOD, monthly average mg/l or less % BOD Removal 96 > 85 1

2 % TSS Removal 97 > 85 NPDES Effluent Limit Violations 0 0 Blending events 0 0 Total volume blended, MG 0 0 Odor complaints 2 0 Digested sludge pumped to drying beds, MG 1,422,780 N/A Leachate received, GAL 496,400 N/A Leachate received YTD, MG N/A Maintenance The Maintenance Department completed 141 work orders, 72 for lift stations, 42 for storm water and 23 in the plant, along with 4 corrective work orders. Spent many hours this month working on cleaning rags and debris out of the digester heat exchangers and associated piping in order to maintain digester temperatures. Found multiple rag balls inside piping which were removed by taking pipes apart to clear. Also used Vaughn recycle pump to help clear lines and supply enough fluid to heat exchange pumps. Installed spare RAS pump and waiting for original rebuilt pump to be returned from manufacturer. Aerator fans arrived and one was installed in Aerator Cell 2C with the use of rented 65 ton Crane. At this time, one floating aerator is still being used in Aerator Cell 2B. Annual emergency generator maintenance service has begun on all lift stations and should be complete by mid-august timeframe. Repairs finished on Secondary Clarifier #1 and will be put in service soon. One temporary employee has been hired and is now a Veolia employee. Purchased new air monitors for confined space entry; calibrated and in service. Collection Systems Sanitary Sewer System During the month of July there was one sanitary sewer overflow (SSO). City of Richmond staff met all reporting guidelines with the State Water Board in CIWQS. July 8, 2016 at 4925 Macdonald Ave, 45 gallon discharge, Category I event, 40 gallons (89%) recovered. There were 7 sanitary sewer related service calls in July (see table 2).

3 Sanitary Sewer Point Repair Highlights: On July 6, 2016 contract staff plated a sink hole and repaired the sewer main at th St. Storm Water There were 6 storm-water related service calls in July (see table 3). Storm Water Point Repair Highlights There were no storm drain repairs preformed during the month of July. Collection Systems Monthly Performance Indicators Veolia is in the 7 th year of a 10-year CCTV cycle. Cycle start date was January 1, CCTV Miles Actual CCTV Cycle Miles (actual) CCTV Cumulative Miles Cycle Miles (actual) Goal Cumulative Summary Goal Rest of Page Intentionally Blank

4 Veolia is in the 3rd year of a 4-year sewer cleaning cycle. Cycle start date was January 1, Cumulative footage exceeds the goal to-date. 12 Cleaning Miles Cycle (actual) Miles Cleaned per Year Cumulative Miles Cleaned Cycle Miles (actual) Cumulative Sanitary System Performance Indicators Table 2 Performance Indicator Monthly Actual Target/Limit Service Calls (Public Facilities/Assets) 7 N/A Service Call Response Time (minutes) <30 <30 Private Lateral Service Calls; Regular/After Hours 1/0 N/A Regular/OT Hours Spent on Private Lateral Calls 1/0 N/A Point Repairs Completed 1 N/A Manhole Inspections 13 N/A Manhole Repairs 0 N/A

5 CCTV (Closed Circuit TV) (ft.) 14,458 7,000 GPS Surveys 0 As needed Cleaning (ft.) 24,901 25,000 Cleaning QA/QC Events 6 4 SSOs for current month Mainline 1 10/yr Total Mainline SSO Volume (gallons) 45 0 Total Mainline SSO Volume Recovered (gallons) % % Mainline SSO Volume Recovered 89% 100% # SSOs Wet Weather (localized capacity issue) 0 0 # SSOs Engineered Overflow Structure 0 0 Total SSO Volume from Engineered Overflow Structure 0 N/A SSOs Private Laterals 0 N/A General Maintenance 3 N/A Sewer Lift Station PMs 72 N/A Potential SSOs Eliminated due to SmartCover Monitors 1 N/A SSOs Mainline Resulting in Property Damage 0 0 Total Wet Weather SSOs Year to Date 17 0 Total Dry Weather SSOs Year to Date Baykeeper Number and Percentage of SSOs During 2016 with Discharge Reaching Storm Water Conveyance 24 of 30 80% N/A Storm Water System Performance Indicators Table 3 Performance Indicator Monthly Actual Target/Limit Storm Point Repairs 0 N/A Storm Manhole Repairs 0 N/A Storm Manhole Inspections 0 N/A Storm Service Calls 6 N/A Storm CCTV (ft) 19 N/A Storm GPS Surveys 0 N/A Storm Pipe Cleaning (ft) 70 N/A

6 Storm General Maintenance Cleaning (Linear feet of V-Ditches, Culverts or Creeks) 0 N/A Pump Stations Inlet/Outlet Channels Cleaned 0 N/A Cash Basins Cleaned 2 N/A Storm Vaults Cleaned/Inspected 0 N/A GSRD (trash capture device) Cleaning/Inspections 0 4/year Flap Gate/Duck Bill Inspections 0 4/year Storm Water Pump Station PMs 42 N/A Capital Improvement Program Electrical Upgrade Project Construction Excavate and set concrete manholes EMH-011A, EMH-201B and EMH-011B. Excavate, install rebar and PVC conduit at duct bank installed from EMH-011A to EMH-201B and EMH-011B. Prep and pour concrete duct bank between EMH-011A and EMH-011B. Layout and start trenching from EMH-011A & EMH-201A towards SB-2 Area. Continued submitting equipment and Requests for Information. 13 th Street Capacity Improvement Project Design This project replaces pipelines with NASSCO PACP Structural Grade 4 and 5 defects in the sewershed that flows to the 13th Street interceptor, and replaces and upsizes the 13th Street interceptor from Costa to Garvin. Initial survey was completed at the end of March; final survey is in process. Utility investigation has been completed; plans are under development based on initial survey and utility data. 90% design submittal meeting was held July 14 th ; construction is anticipated in rd Street Sewer Replacement Project Design This project replaces the existing 21-inch diameter interceptor sewer and adjacent 6-inch diameter collector sewer between Ohio and Cutting Blvd. Survey was completed in April; geotechnical investigations are continuing. Utility data has been received and plans are under development. 90% design submittal meeting was held July 27 th ; construction is anticipated for mid th and Bissell Urgent Repair The pipe underneath the playing field next to the nearby school at 35 th and Bissell is in poor condition and needs repair.

7 The proposed fix involves pipe bursting the 430' long line segment into two portions and installing a new 36" manhole in the middle, as well as rehabilitating the existing manhole at 35th and Leona. This urgent repair project was approved on August 2 nd ; construction has begun near school ground in order to complete construction and fix problem area prior to school starting up on August 25 th. National Court Bid opening was June 30; construction awarded to W.R. Forde. Task authorization was approved July 8 th. Estimated start of construction in mid-august once all documents have been received. WWTP Facility Plan Project Prepared final Facility Plan for City/Veolia review. Provided as-needed support for the CWSRF loan application. Prepared final Technical Application Package for the three critical WWTP projects to the State. Prepared draft MND for the non-cat-ex WWTP and collection system projects. Prepared revised Biological Resources TM and Cultural Resources TM per State's review comments on the Environmental Application Packages for the WWTP Critical Improvements Project. The same TMs will be submitted for the Environmental Application for the three collection system projects. Prepared and submitted responses to State review questions on the CWSRF Environmental Application Package for the WWTP Critical Improvements Project that is being filed as categorically exempt. WWTP Critical Improvements Project Design Conducted technology selection meeting with Veolia/City on 7/22. Conducted headworks design CAMP with Veolia/City on 7/26 and 7/28. Prepared 30% design deliverable.