Blackburn Wastewater Treatment Plant Upgrade Study

More documents

Recommendations

Info

Section 4.0 - Blackbum Treatment Options descriptions to assist with the decision making process. These seven basic wastewater treatment andor transfer options and the two sub-options will be evaluated against both economic and non-economic criteria. The non-economic analysis is described in Section 5.0, and was completed at the Decision Workshop held with City staff on October 19, 1999. The economic analysis is based on preliminary capital cost estimates and ongoing operating and maintenance (O&M) cost estimates for the above nine options. Estimates were also made of the approximate timing of the required capital expenditures. These values were used to generate 25-year life cycle wst estimates for the nine options using a net present value (NPV) analysis at a discount rate of 6 percent. : In all nine options, it was assumed that the major capital expenditure would occur in 200612007, so that the upgrades would be fully operational when the existing sewage lagoons at the Blackbum WWTP are at capacity. The existing lagoons will be operated until that time. Implicit in this assumption is that the L'I mitigation measures will be successhlly completed in the next five years. In all options involving the transfer of wastewater from the Blackburn colIection area to the Lansdowne Road W P , which are Options 1 to 5, a small incremental O&M cost allowance was made for treating the additional wastewater at the Lansdowne Road WWTP. However, no allowance was made for the fact that this transfer may require & earlier upgrade at Landsdowe Road WWTP as the Blackburn sewage flows are less that 4 percent of the existing capacity at Lansdowne Road WWTP, and the effect of such a small incremental increase is outside the accuracy of this analysis. The estimated capital and 25-year life cycle costs for the nine wastewater treatment options are presentd in Appendix B, and are summarized in Table 4.1 below. TabIe 4.1: 25-year Life Cycle Costs
Section 4.0 - Blackburn Treatment Options Option 7a 7b Capital Cost 1999 1,785,000 2,315,000 NT'V Capital Cost 1,155,000 1,495,000 NPV O&M Costs 1,840,0000 1,840,0000 XPV Total 2,995,000 3,335,000 The above life cycle cost summary shows that the NeV of Options 1,2, 3,4, 5, and 6a are all within approximately 20 percent of each other, with Option 2 (decommission Blackbum WWTP and transfer all flows by gravity sewer to the Lansdowne Road WWTP) having the lowest overall cost. All options involving the installation of a mechanical secondary treatment plant at the Blackburn site (Options 6b, 7a and 7b) have a significantly higher cost than the flow transfer options.
Page 2 and 3:
BLACKBURN WASTEWATER TREATMENT PLAN
Page 4 and 5:
Table of Contents SECTION TITLE PAG
Page 6 and 7:
SECTION 1 STUDY BACKGROUND AND OBJE
Page 8 and 9:
Section 1.0 -Project Background and
Page 10 and 11:
Page 12 and 13:
Page 14 and 15:
Section 1.0 - Project Background an
Page 16 and 17:
Page 18 and 19:
Page 20 and 21:
City of Prince George - Decision Wo
Page 22 and 23:
City of Prince George - Decision Wo
Page 24 and 25:
MINUTES OF MEETING PR~ECT NAME: Bla
Page 27 and 28:
Blackburn WWTP Treatment Options Op
Page 29 and 30:
Nores. Annual O&M cost for Blackbum
Page 31:
Blackbum WWTP Treatment Options Opt
Page 35 and 36:
APPENDIX A STANTEC CONSULTING LTD.
Page 37 and 38:
5.0 CONCLUSIONS I '\ -. 5.1 RESULTS
Page 39 and 40: CITY OF PRINCE GEORGE Forcemain fro
Page 41 and 42: Section 6.0 -Recommended Option Key
Page 43 and 44: Section 6.0 -Recommended Option Com
Page 45 and 46: SECTION 6.0 RECOMMENDED OPTION 6.1
Page 47 and 48: SECTION 5.0 EVALUATION OF OPTIONS 5
Page 49 and 50: Section 5.0 -Evaluation of Options
Page 55 and 56: Section 5.0 - Evahation of Options
Page 57 and 58: Section 3.0 - Evaluation of Options
Page 59 and 60: SECTION 4.0 BLACKBURN TREATMENT OPT
Page 61 and 62: Section 4.0 - Blackbum Treatment Op
Page 65 and 66: Section 4.0 - Blackburn Treatment O
Page 67 and 68: Initiate llt reduction program and
Page 71 and 72: Section 4.0 - Blackbm Treatment Opt
Page 77 and 78: CITY OF PRINCE GEORGE Scale= $:I00
Page 83 and 84: :ITY Of PRINCE GEORGE Existing Chlo
Page 89: Section 4.0 - Blackbum Treatment Op
Page 93 and 94: SECTION 4.0 BLACKBURN TREATMENT OPT
Page 101 and 102: Initiate Ill reduction program and
Page 105 and 106: SECTION 3.0 AUDIT OF EXISTING FACIL
Page 107 and 108: Section 3.0 -Audit of exist in^ Fac
Page 109 and 110: Section 3.0 -Audit of Existing Faci
Page 111 and 112: SECTION 2.0 III MITIGATION MEASURES
Page 113 and 114: Section 2.0 - UI Mitigation Measure
Page 115 and 116: APPENDIX E FLOW CALCULATIONS FOR SE
show all

Blackburn Wastewater Treatment Plant Upgrade Study

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?