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HomeMy WebLinkAboutWQ0005763_2012 Annual Report_20130227CENTRAL FILES DWQIBOG 2012 ANNUAL PERFORMANCE for Tuckaseigee Water and Sewer Au Wastewater Operations rj� OECEIVED MAR. 112013 Asheville Regional Office The Tuckaseigee Water and Sewer Authority currently owns and operates three (3) wastewater treatment facilities and has contracted to operate the Whittier WWTP for the Whittier Sanitary District.. The following report is a summary of the operation of these facilities for the 2012 calendar year. TWSA Plant # 1 Location: 1871 North River Rd. Sylva, North Carolina 28779 Operator in Responsible Charge: Stan Bryson Contact: Wastewater Operations Superintendent 1246 West Main St. Sylva NC 28779 ph: 828-586-9318 TWSA Plant # 1 is operated under the authority of the following permits, as issued by the North Carolina Dept. Of Environment and Natural Resources: iNC_00395_78 NPDES-Discharge Permit_ > ffiQ Pera�xit Air Permit #08420R01 ffrlmwate�°-pff �C 110�1 TWSA Plant # 1 discharges from one outfall into the Tuckasegee River which is classified Class C-Trout waters in the Little Tennessee River Basin. The plant design process is a sequencing batch reactor (SBR) version of the activated sludge process with a design capacity of 3.5 million gallon/day. The plant consists of the following unit processes, automatic band screen, vortex grit removal,150 hp triplex influent pump station, 2 SBR basins with a capacity of 1.694 mg each, .468 mg gal of flow equalization, .1508 mg gals of chlorination capacity and d-chlorination and reaeration facilities. The TWSA completed the plant upgrade in 2011 and is currently operating well within permit limits. The expansion should help to meet the growing needs of the county well into the future. (page 1) In addition the plant continues to treat wastes generated by septic tank pumpers in Jackson County as well as portable toilet services provided during construction of any homes or businesses in the County. These services to the total geographic area of the county significantly impact the facilities sludge management operations. Overall performance of the plant was excellent during 2012. A new chemical feed building was constructed during 2012 and is operating as designed. The new sludge dryer is operating and the costs to dry sludge have been less than expected. This new system allows staff to remove sludge from the process regardless of the weather and greatly enhances the ability of the staff to properly operate the plant. The average daily flow at the facility during the year 2012 was 0.761 mgd. This represents 21.7% of plant permitted capacity and was a 3.8% decrease from 2011. The highest monthly average occurred in March and April was recorded as 0.879 mgd. This represents 25.1% of total plant capacity and was a 13.4% decrease from 2011. The highest daily recorded flow in 2012 was 1.541 mgd and occurred Oct 3rd, 2012. This represented 44.0% of total plant capacity and was an increase of 3.4% from 2012. There were zero (0) days in 2012 when the recorded flow was greater than plant capacity. The facility had one month in 2012 when it exceeded permitted values. A malfunctioning influent valve on the #2 SBR resulted in discharge of water with higher than permitted values for BOD (biochemical oxygen demand) in the month of February 2012. Total sludge production was calculated from the amount of sludge processed on the belt filter press. These residuals totaled 2,119,736 gals of sludge and were calculated at 170.91 dry metric tons. This represents all of the sludge generated by the Authority's facilities during 2012. When the sludge production of the other plants the Authority operates is subtracted from this total, it is estimated that the TWSA Plant #1 facility produced 138.98 dry metric tons of sludge during 2012. This is 81.3% of the total amount of sludge produced by the facilities operated by the Authority during 2012. This sludge is dried to meet EPA and NCDENR regulations and is made available for distribution to the public as a soil amendment. Approx. 81 tons of residuals were disposed of in this manner during 2012. Another 24.8 tons was hauled by a private contractor to a land fill in GA for disposal. The following is a summary of violations that occurred during 2012. February 2012 Parameter Reported Value Permit Limits BOD..........................................31.3 monthly average 30 mg/l The permit for this facility expired on October 31, 2012 and is currently in the process of being renewed. (page 2) 2012 Monthly Performance Summary of Wastewater Plant Operations Plant # 1 Flow BOD TSS Fecal Month mgd mg/I mg/I per 100 ml (Limit, 3.5 mad) (Limit, 30 ma/1) (Limit, 30 mall) (Limit, 400/100 mis) January 0.876 11.8 8.9 14 February 0.879 31.3 12.1 22 March 0.907 20.7 8.1 5 April 0.849 21.2 10.1 25 May 0.679 17.0 11.2 21 June 0.569 17.6 14.2 24 July 0.610 4.5 5.2 10 August 0.692 3.4 < 4.0 < 2 September 0.842 6.3 < 2.7 19 October 0.826 4.5 < 2.6 14 November 0.755 5.7 < 4.2 20 December 0.674 11.5 10.4 69 avg. 0.763 13.0 6.7 20 TWSA Plant # 2 Location: 114 East Hometown Place Rd. Sylva, North Carolina 28779 Operator in Responsible Charge: Ben Henson, ORC 828-586-9426 or Contact: Stan Bryson Wastewater Operations Superintendent 1246 West Main St. Sylva NC 28779 ph: 828-586-9318 TWSA Plant # 2 is operated under the authority of the following permit, as issued by the North Carolina Dept. Of Environment and Natural Resources: NC0020214 NPDES Discharge Permit TWSA Plant # 2 discharges from one outfall into Scott Creek which is classified Class C-Trout waters in the Little Tennessee River Basin. The plant process is a conventional activated sludge process with a design capacity of 0.5 million gallon/day. The plant consists of the following unit processes, manually cleaned bar screen, aerated grit removal, activated sludge with secondary clarification and chlorination and dechlorination facilities. The addition of a surge (ec) basin is needed to maximize the treatment capacity of the plant. As of Dec 31", 2012 the main concern at this facility is the outdated and mismatched electrical facilities. The electrical facilities will have to be substantially upgraded to allow the Authority to move forward with any plant improvements. The average daily flow at the facility during the year 2012 was .199 mgd. This represents 39.8 % of plant capacity and was a 0.5 % decrease from the avg. daily flow last year. The highest monthly average occurred in April and was recorded as .262 mgd. This represents 52.4% of total plant capacity and was a 6.4% decrease from 2011. The highest daily recorded flow in 2012 was .629 mgd and occurred May 14th, 2012. This represented 125.8% of total plant capacity. There were four (4) days in 2012 when the recorded flow was greater than plant capacity. The same number of days as 2010 and 2011. This plant produced 343,200 gallons of waste sludge during 2012. This sludge was hauled to TWSA Plant #1 for treatment. These residuals totaled 25.33 dry metric tons and represented 14.8 % of the total residuals generated by the Authorities facilities. Overall performance of the TWSA #2 wastewater plant for the calendar year of 2012 was excellent with no violations of monthly parameters as specified in the permit. The permit for this facility was renewed in 2012 and will expire on October 31, 2017. (page 4) 2012 Monthly Performance Summary of Wastewater Plant Operations Plant # 2 Flow BOD TSS Fecal Month mgd mg/I mg/I per 100 ml Limit 0.5 m d Limit 30 ma/I Limit 30 m I Limit 200/100 mis January 0.237 4.2 5.3 11 February 0.198 5.3 4.6 9 March 0.220 7.4 5.6 < 4 April 0.262 8.6 5.8 < 6 May 0.237 12.3 7.7 < 4 June 0.197 19.8 9.4 4 July 0.173 7.3 4.6 6 August 0.161 10.8 5.8 < 8 September 0.161 8.0 5.5 < 4 October 0.216 8.4 5.5 5 November 0.148 14.5 25.4 < 5 December 0.183 11.7 11.7 < 4 avg. 0.199 9.9 8.1 3 TWSA Plant # 3 Location: 851 Cashiers Lake Rd. Cashiers, North Carolina 28717 Operator in Responsible Charge: Ben Henson, ORC 828-743-5793 or Contact: Stan Bryson Wastewater Operations Superintendent 1246 West Main St. Sylva NC 28779 ph: 828-586-9318 TWSA Plant # 3 is operated under the authority of the following permit, as issued by the North Carolina Dept. Of Environment and Natural Resources: NC0063321 NPDES Discharge Permit TWSA Plant # 3 discharges from one outfall into an unamed tributary to the Chatooga River which' is classified as Class B-Trout ORW waters in the Savannah River Basin. The plant process is a conventional activated sludge process with a design capacity of 0.2 million gallon/day. The plant consists of the following unit processes, manually cleaned bar screen, extended air activated sludge with secondary clarification, tertiary filters and chlorination and dechlorination facilities. The addition of a band screen at the headworks would greatly improve operations and the quality of sludge the plant produced. The average daily flow at the facility during the year 2012 was .073 mgd this represents 36.5% — of plant capacity and represents a 15.1 % increase in avg daily flow from 2011. The highest monthly average occurred in July and was recorded as .112 mgd. This represents 56% of total plant capacity and represents a 31.2% increase from 2011. The highest daily recorded flow in 2012 was .190 mgd and occurred April 18th, 2012. This represented 95% of total plant capacity and was a 10.4% decrease from 2012. There were zero (0) days in 2012 when the recorded flow was greater than the plant capacity as compared to one (1) days in 2011. This plant produced approx 75,000 gallons of waste sludge during 2012. This sludge was hauled to TWSA Plant #1 for treatment. These residuals totaled 6.60 dry metric tons and represented 3.9 % ;of the total residuals generated by the Authorities facilities. Overall performance of the TWSA #3 wastewater plant for the calendar year of 2012 was excellent with no violations of any monthly permitted parameters. f The permit for this facility was renewed in 2012 and will expire on Aug 31 '�, 2017. i (page 6) 2012 Monthly Performance Summary of Wastewater Plant Operations Plant # 3 N H3-N Flow BOD TSS Fecal mg'I Month mgd mg/I mg/I per 100 ml (Limit, 2.2 mg/I Apr -Oct) (Limit_ 0.200 mad) (Limit. 15 ma/I) (Limit_ 30 ma/1) (Limit_ 200/100 mis) n imit 4 4mnli Alnv -Marl January 0.068 < 3.0 < 3.2 < 4 < 0.5 February 0.048 3.3 < 3.4 < 4 < 0.5 March 0.055 4.8 5.7 < 4 < 0.8 April 0.069 3.7 7.3 < 7 < 1.3 May 0.085 3.5 7.7 < 4 1.6 June 0.091 7.8 8.3 < 27 1.4 July 0.112 6.7 5.0 < 4 < 1.0 August 0.105 4.7 8.5 < 4 < 0.6 September 0.080 5.0 < 8.2 < 4 < 0.5 October 0.073 5.9 12.0 6 < 0.9 November 0.045 < 3.0 10.5 < 4 < 0.9 December 0.045 5.0 10.9 < 4 < 1.1 avg. 0.073 4.2 6.3 < 5 0.3 Whittier WWTP Location: 294 Clearwood Drive Whittier, North Carolina 28789 Operator in Responsible Charge: Harvey Bingham, ORC 828-506-3323 or Contact: Stan Bryson Wastewater Operations Superintendent 1246 West Main St. Sylva NC 28779 ph: 828-586-9318 The Whittier Sanitary District currently contracts operation and maintenance of the Whittier WWTP to the Tuckaseigee Water and Sewer Authority. Whittier WWTP is operated under the authority of the following permit, as issued by the North Carolina Dept. Of Environment and Natural Resources: NC0087602 NPDES Discharge Permit The Whittier WWTP discharges from one outfall into the Tuckaseegee River which is in the Little Tennessee River Basin. The plant process is a conventional activated sludge process with a design capacity of 0.1 million gallon/day. The plant consists of the following unit processes, influent pump station, manually cleaned bar screen, extended air activated sludge with secondary clarification, tertiary filters and ultra -violet light disinfection facilities. The average daily flow at the facility during the year 2012 was .005 mgd this represents 5% of plant capacity and is the same daily flow avg as recorded in 2011. The highest monthly average occurred in August and was recorded as .007 mgd. This represents 7% of total plant capacity. The highest daily recorded flow in 2012 was .042 mgd and occurred Jan 24th, 2012. This represented 42% of total plant capacity and was a 6.7% decrease from 2011. There were zero (0) days in 2012 when the recorded flow was greater than plant capacity. This is a new plant and as such there is very little daily flow to be treated. This poses unique operational problems and results in difficulty in keeping a viable population of bacteria alive to treat the incoming waste with. The plant is currently being batch operated, with a discharge occurring just on the days needed. Overall performance of the Whittier wastewater plant for the calendar year of 2012 was excellent with no violations of monthly parameters as specified in the permit. The permit for this facility was renewed in 2012 and will expire on Oct 3Is, 2017. (page 8) 2012 Monthly Performance Summary of Wastewater Plant Operations Whittier Flow BOD TSS Fecal NH3-N Month mgd mg/I mg/I per 100 ml mg'I (Limit, 0.100 mqd) (Limit, 30 mq/1) (Limit, 30 mq/1) (Limit, 200/100 m1s) (no limit) January 0.006 4.5 5.8 < 4 9.9 February 0.005 7.5 8.7 4 10.9 March 0.005 8.6 7.6 < 4 8.1 April 0.006 7.2 6.7 < 12 4.4 Mav 0.005 4.3 4.2 < 4 6.0 June 0.005 6.9 7.9 < 4 1.6 July 0.004 5.9 3.1 < 4 0.8 August 0.007 6.5 6.8 < 4 1.8 September 0.006 < 4.3 < 5.1 < 4 1.4 October 0.006 3.5 3.0 < 4 0.9 November 0.004 < 2.7 4.9 4 1.9 December 0.005 5.5 5.5 < 6 6.1 avg. 0.005 5.0 5.4 < 4 4.5 The annual report of the Tuckaseigee Water and Sewer Authority Wastewater operations is available to the public for review at the central offices located at 1246 West Main St. Sylva, NC 28779. Notification of the availability of this report has been made to the customers or users of these facilities through advertisements in the print media located in the geographic area the Authority serves. I certify under penalty of law that this report is complete and accurate to the best of my knowledge. I further certify that this report has been made available to the user or customers of the named system and that those users have been notified of its availability. Stan Bryson Wastewater Operations Superintendent Tuckaseigee Water and Sewer Authority Dated oD� (page 9)