Fort Walton Beach Council agenda — 04-29-03 workshop agenda — reading text

ro e~ o~ c: c: o~ 0.. 1. 9y 1.1 I T O'< z6)~ II 0>.; 0 0'-- 1; Q) o~ 2:' o~ c: . c: Q~ o v~ "- c;l Q 9y cu a. Q V'< z6)~ >- v>.; CI) CI) tI Ii c Q'0 . L........... J V'-- 1; = Q~ 0 MLL.c v~ . c M.cU cu 0/1 - It' C C) CI) v~ s 0 som 5'.. : E C)"- c 1. c LLI-:: 0 5''< 9y z6)~ 5'>.; 0 LL.... 5''-- LL 1; 5'~ e..:">~ v~ 51~ 51'< 9y o Z'"iQ 5< z6)~ cz}~~ 8 <: f 51).; 1 J; I. jj i;; E-o 0 51'-- U E t! 1; 0'"i " 1 it' ~ I/.! ~ ~ 51~ I..., 2!f < ch 2? Q..2 ~ 9. a ~ Z !!. 8 0> v~ o o o o o o o o o o o ci5 d ~ It! o o o o o o o o o o o ~ I Iii o I.() o I.() o I.() o o I.() I.() o E-o Ii, "' 9 o o I.() i) i) N N o o o r:: r- IX) 9 OE> W) MOI.l: 9 u.: I'! 3. 1.2 Influent Qualitv I The influent CBOD5 and TSS data reviewed for the City' s WWTP indicated that since January 1998 the influent daily CBOD5 concentration ranged from 52. 0 mg/l to 277.0 mg/l, and averaged mg/l. The daily influent TSS concentration ranged from 59. 0 mg/l to 592. 0 I approximately 172. 6 mg!l and averaged approximately 202. 8 mg/l. The influent CBOD5 and TSS design values for this WWTP are 220 mg/l and 200 mg/l respectively. Note the average TSS of 202. 8 mg/l is I slightly higher than the design value of 200 mg!l. The influent CBOD5 and TSS data for the period beginning in January 1998 through June 2002 are summarized in Table A-2. I 3. 1.3 Effluent Quality I As previously mentioned in Section 2 of this report, the effluent from the City of Fort Walton Beach WWTP is pumped to a 29.0 MG lined holding pond onsite. Based on the data review for I the period beginning in January 1998 and ending in June 2002, the City' s WWTP produces an effluent quality that consistently meets the permit requirements for effluent disposal. Table A-3 I summarizes the effluent data from the City' s WWTP disposed at the two ( 2) sprayfield sites for the period between January 1998 and June 2002. I There were times when the effluent TSS directed to the sprayfield at the golf course ( R002) I exceeded the daily maximum requirement of 5 mg/l. For the period beginning on October 30, 1998 and ending on June 30, 2002, the permit condition for this parameter was exceeded six ( 6) times as indicated on Table A- 3. I'!... 'As can be seen from this data, the effluent pumped from the City' s WWTP to the restricted II access sprayfield site R001 met the effluent criteria on a consistent basis, however there were times the levels exceeded the permitted requirements. Figures B- 1, B- 2, B- 3, B- 4, and B- 5 II.' II graphically illustrate the trends in effluent quality for BOD5 (ROOl and R002), TSS at R001, TSS at R002, pH at R001, and pH at R002, respectively. I I I E I F:\2001\ 01.0387. 000\Report\ R-4\ 041403 FINAL\ SEC 3. doc HAI#01.0387. 000 3- 9 04/ 14/ 03 m fill III III 3. 1.4 Residuals Quality The sludge wasted from the wastewater treatment process is treated using a series of processes, i'jr,i which include anaerobic digestion and dewatering. The residuals produced from these processes sludge under the provisions of the sludge rule Chapter 62- 640, I are considered a Class B Domestic Wastewater Residuals, FAC, and the Federal Sludge Rule Title 40, Code of Federal Regulations ( CFR), Part 503. Since the City currently disposes its residuals at the current I agricultural use site ( Earl King Farms in Freeport, Florida) quarterly sludge analyses are prepared. All have been within standards as outlined in the current state and federal regulations. I 3.2. WASTEWATER FLOW PROJECTIONS I