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

access land application slow- rate sprayfield irrigation system ( ROOl). Discharge is to a 400- acre site adjacent to the WWTP site. III 1. 55 MGD maximum monthly average daily flow to public access land application slow- rate sprayfield irrigation system ( R002). Discharge is to a 2. 0 million gallon holding tank at the Fort Walton Beach municipal golf course with subsequent discharge to the 200- acre expandable to 300- acres) golf course. ill The WWTP is currently staffed 16 hours per day, seven ( 7) days per week. I F:\2001\ 01.0387. 000\Report\ R-4\ 041403 FINAL\SEC 2. doc HAI#01.0387.000 2- 4 04/ 14/ 03 ill I I 2. 3. 2 Wastewater Treatment Plant The City WWTP was constructed from 1979 to 1980 and was upgraded in 1992, with the addition of tertiary filtration to a public access sprayfield, high- level disinfection for portions of flow going to the public access reuse sprayfield ( R002), and modifications to the existing I sprayfield to reduce ponding during periods of wet weather. The existing facility is presently permitted to treat 4. 50 MGD maximum month average daily flow with up to 1. 55 MOD tertiary filtration. The City of Fort Walton Beach WWTP currently operates under FDEP Permit No. FLAlOI923- 002- DWIR/NR, which expires on April 1, 2004. The permit conditions are I summarized in Table 2- 1. The locations of the City's WWTP and effluent disposal sites are illustrated in Figure 2- 1. Whereas, an existing aerial photo with a site plan of the City's WWTP I and the process flow schematic are provided as Figures 2- 2 and 2- 3, respectively. The existing treatment stream flow from the plant headworks through the facility to the holding pond is driven by gravity. i Based on laboratory reports, the overall CBODs removal rate of the entire facility during the last I two ( 2) years ranged from 91- to 97- percent. The removal rate is above the typical design removal parameters for this type of facility, which ranges from 65- to 90- percent.. The high I removal rates can be attributed to the low flows entering the facility. Presently, the facility is operated at approximately 57- percent of the intended treatment capacity of the facility. The lilt historical wastewater flows will be discussed further in Section 3 of this report. II II I I I I F:\2001 \ 0 1.0387 . 000\Report\ R-4\ 041403 FINAL\SEC 2. doc It HAI#01.0387. 000 2- 5 04/ 14/ 03 I II I-< o 0 Q) Q) s.. D Q) o e oo::t Q) III o Q),.-... Soo::: t Q),.-... Ioo::: t Q),.-... Soo::: t g. 00 00 oo::t o II S"" d S"" d S"" d I-< Q) s~ u ia ia Ii1=~ o d ~ d("<) d("<) Q) Q) Q) Q) Q) Q) Q) Q) 00 Q) E I ..... I ..... ::I ..... ::I ..... :: p.,~ OJ) ia~ ia ia I Q) c.;...; Q) 2 00 00 2 ffi~ ffi~ ffi~ ffi~ d o > fJ 8 I 1 Q)~ c Q)~ c