february 4, 2011 to: wra technical committee members · february 4, 2011 . to: wra technical...

February 4, 2011 To: WRA Technical Committee Members: Jim Utter, Altoona Jolee Belzung, Ankeny Pat Collison, Bondurant Bart Weller, Clive

Carl Elshire, Des Moines Phil Koundakjian, Des Moines David Cubit, Johnston Gary Patterson, Pleasant Hill Bret Vandelune, Polk County David McKay, Urbandale

Paul Drey, UWHSD David Brick, UWHSD Tim Hoskins, City of Norwalk Duane Wittstock, West Des Moines John Gibson, City of Waukee Mike Shulte, Polk City Anthony Bellizzi, Cumming

Re: WRA Technical Committee Meeting (February 8, 2011) A meeting of the WRA Technical Committee has been scheduled for Tuesday, February 8, 2011 at 1:30 p.m. The meeting will be held in the Administration Building Conference Room at the Des Moines Wastewater Reclamation Facility, 3000 Vandalia Road , Des Moines, Iowa. A meeting notice, agenda, and exhibits for the meeting and minutes from the January 11, 2011 meeting are attached. The notice, minutes, exhibits, and agenda will be sent via e-mail. If you have questions please contact me at 223-6231 or Scott Hutchens at 323-8031. Very truly yours, Bart Weller Chairperson WRA Technical Committee BW:STH Attachments

NOTICE OF MEETING

DES MOINES WASTEWATER RECLAMATION AUTHORITY TECHNICAL COMMITTEE

Des Moines Wastewater Reclamation Facility 3000 Vandalia Road Des Moines, Iowa

February 8, 2011

1:30 p.m.

AGENDA

ITEM 1: Call to Order ITEM 2: Roll Call ITEM 3: Minutes for the January 11, 2011 meeting - Approval ITEM 4: WRA/WRF Final 2010 Flows Report – Approval ITEM 5: WRA Fiscal Year 2012 Capital Improvements Plan-Discussion/Recommendation ITEM 6: WRA 2010 Community Population-Approval ITEM 7: WRF Building 91, 92, & 96 HVAC Improvements - Project Recommendation ITEM 8 WRF Preliminary Treatment Building Barscreen Replacement - Project Recommendation ITEM 9: OSA Supplemental Agreement No. 2 to Perform and Execute Archaeological Data Recovery Plan at the CSSSF site in the amount of $616,966 - Approval ITEM 10: Army Corps of Engineers & FEMA New Flood Elevations Calculation for Des

Moines & Raccoon Rivers and the Impact on WRA Facilities New and Existing – Presentation

ITEM 11: Additional Consultant Costs at CSSSF as it relates to New Projected Flood

Elevations, Archaeology Investigation and Realignment of New Main Outfall - Information

ITEM 12: Recap of Flood Repairs 2010 - Information ITEM 13: WRA Communities Biggest Sewer User Customers – Information/Discussion ITEM 14: Industrial Waste Ordinance – Information ITEM 15: Other Business ITEM 16: Adjourn

ITEM 3

DES MOINES METROPOLITAN WASTEWATER RECLAMATION AUTHORITY

TECHNICAL COMMITTEE

MEETING MINUTES January 11, 2011

1:30 p.m.

Des Moines Metropolitan Wastewater Reclamation Facility 3000 Vandalia Road

Des Moines, Iowa ITEM 1: Call to Order

Bart Weller, Chair Person, called the January 11, 2011, Technical Committee meeting to order at 1:30 p.m.

ITEM 2: Roll Call Technical Committee Members in Attendance Jim Utter, Altoona Karen Oppelt, Altoona Jolee Belzung, Ankeny Dave Cubit, Johnston Bart Weller, Clive David McKay, Urbandale John Gibson, Waukee David Miller, Des Moines Gary Patterson, Pleasant Hill Bret Vandelune, Polk County Duane Wittstock, West Des Moines Phil Koundakjian, WRF Royce Hammitt, WRF Others in Attendance Scott Hutchens, Operating Contractor James Beck, Operating Contractor Bill Stowe, Operating Contractor Roxane Vaughan, Operating Contractor Tina Grove, Operating Contractor H. R. Veenstra Jr., Veenstra & Kimm, Inc. Al Munsterman, Snyder & Associates Brian Bakke, HDR Engineering Mike Halde, Howard R. Green Company

WRA Technical Committee Page 2 of 3 January 11, 2011

ITEM 3: Approval of Minutes for the December 14, 2010 Technical Committee meeting Jolee Belzung made a motion to approve the minutes of the December 14, 2010,

Technical Committee meeting. John Gibson seconded the motion. The motion carried unanimously,

ITEM 4: WRA West Des Moines, Outfall Sheetpile Repair - Bid Review &

Recommendation

Scott Hutchens told the group that they took nine bids and that Peterson Contractors, Inc. was the low bid and that they came in at $177,500.00 which was 29% lower than the engineer’s estimate.

Bob Veenstra noted that this will be reimbursed significantly by FEMA. Duane Wittstock made a motion to recommend this project to the Board for

approval to award. Jim Utter seconded the motion. The motion carried unanimously.

ITEM 5: WRA Fiscal Year 2012 Capital Improvements Plan-Discussion Scott Hutchens referred to the CIP pages that were electronically sent out in the

meeting packet and that are on the website. He pointed out several changes in the group noting that some of the significant changes were due to final design and favorable bids. A short discussion followed.

ITEM 6: WRA Owned Property near WRF – Information Scott Hutchens referenced a map in the packet highlighting the property that the

WRA owns near the WRF noting that most of the buyouts occurred when the Biosolids Facility was built.

Bill Stowe mentioned that the City of Des Moines is in the negotiation process

with the owners of the old Des Moines Asphalt property, immediately west of the WRF, as a possible location for relocating the City of Des Moines’ supply yard. Kemin Industries currently has a planned expansion and is in the process of acquiring the City of Des Moines’ supply yard property.

ITEM 7: Industrial Waste Ordinance – Information

Royce Hammitt discussed the Industrial Waste Ordinance and gave a report of

the inspections performed in the previous month. He indicated that the FOG inspections were low due to Industrial Inspections that were completed during last month.

WRA Technical Committee Page 3 of 3 January 11, 2011

ITEM 8: Other Business Scott Hutchens mentioned that the Flow Sub-Committee will meet next month

and he will send out a meeting notice. Scott also mentioned that there were a couple of Communities that needed to submit their December flow information and to submit January and February flow data as soon as it becomes available. He also requested the Communities submit their most recent population data to him or James Beck.

Bill Stowe informed the group that the Army Corps of Engineers is in the

process of reviewing the 100 year and 500 year flood elevations using updated flow frequencies data from the 2008 and 2010 flood events. This new data will have a direct effect on the certification of the levee system adjacent to the WRF. The Army Corps of Engineers will provide further information in the future.

ITEM 9: Adjourn Moved by Jolee Belzung and seconded by Bret Vandelune to adjourn the

meeting. The motion carried unanimously.

Meeting adjourned at 2:05 p.m.

tmg

February 2, 2011

Scott Hutchens City of Des Moines Wastewater Reclamation Authority 3000 Vandalia Road Des Moines, Iowa 50317

WASTEWATER RECLAMATION AUTHORITY WRA FLOWS

VEENSTRA & KIMM, INC. 3000 Westown Parkway. West Des Moines, Iowa 50266·1320

515-225-8000 • 515-225-7848(FAX) • 800-24 1-8000(WA T5)

Attached is a spreadsheet showing a comparison of the WRA flows for the 3 year period 2007 through 2009 with the flows far the 3 year period 2008 through 2010. The spreadsheet shows the percentage of WRA flow allocated to each community.

The spreadsheet incorporates the flows approved by the WRA for the 2007-2009 period and the proposed flows for the 2008-2010 period. The spreadsheet incorporates the net flow for the City of Des Moines after adjustment for the WRA 1/1 flow.

The right hand column of the spreadsheet shows the relative change of each community's allocation. The change is based on the percentage of change from the prior year's 3 year percentage to the current 3 year percentage. This relative percentage change is the change that affects the community's budget allocation for WRA costs.

The City of Des Moines will experience a relative 4.16% increase in the cost share of WRA flow allocated items. This change is not unexpected given the difference in flows between 2007 and 2009. The other two communities experiencing an increase are the City of Norwalk and Greenfield Plaza Hill" of Coventry Sanitary District. Both of these communities will see an increase of their WRA allocation of approximately 2%.

The majority of the WRA communities experience a decrease in their cost allocation share. For the majority of the WRA communities the decrease in the percentage allocation would be considered typical of the change that would occur when a wet year is added to the 3 year running average to replace a relatively dry year. Historically, those changes have been as much as 12% compared to a prior year.

West Des Moines. Coralville. Omaha. Moline· Mason City. Sioux City

sthutchens

Text Box

Item 4

Scott Hutchens February 2, 2011 Page 2

The one area of concern with respect to the 3 year running average flow for 2008-2010 is the impact of the WRA flow metering transition in 2010. For the upcoming fiscal year, it does not appear the change in the metering system resulted in a community change outside of the normal variations experienced with replacing a dry year with a wet year in the 3 year average.

For the 2008 to 2010 period the new flow metering data constitutes only one-third of the data in the 3 year average. As a result, some changes that may be related to flow metering would be difficult to observe. The WRA should continue to monitor the relative allocation as it relates to the potential impact of flow metering changes.

If you have any questions or comments concerning the project, please contact the writer at 225-8000.

VEENSTRA & KIMM, INC.

H. R. Veenstra Jr.

4001.3 Enclosure

Community Change

3 year 2008-2010 3 year 2007-2009 Cuurent to Previous

(mg) (%) (mg) (%)

Altoona 1061 3.43% 971.7 3.50% -2.12%

Ankeny 2343.6 7.57% 2183.7 7.87% -3.79%

Bondurant 200.9 0.65% 193.7 0.70% -7.02%

Clive 917.5 2.96% 864.4 3.12% -4.85%

Cumming 2.5 0.008% 2.7 0.010% -17.00%

Des Moines 18077.7 58.41% 15558.7 56.08% 4.16%

Greenfield Plaza/HOC 110.7 0.36% 97.3 0.35% 1.99%

Johnston 533.9 1.73% 506.8 1.83% -5.56%

Norwalk 505 1.63% 443.7 1.60% 2.03%

Pleasant Hill 497.7 1.61% 496.2 1.79% -10.08%

Polk County 114.9 0.37% 109.4 0.39% -5.85%

Polk City 169.7 0.55% 160.9 0.58% -5.45%

USSD 2087.3 6.74% 1928.7 6.95% -2.98%

U-HH 492.6 1.59% 499.2 1.80% -11.54%

Waukee 509.7 1.65% 484.9 1.75% -5.77%

West Des Moines 3324.5 10.74% 3242.4 11.69% -8.09%

30949.2 100.00% 27744.4 100.00%

Preliminary2010 WRA-WRF Monthly Flows

Community January February March April May June July August September October November December WRA Total WRF Total WRA % WRF%Altoona 1.610 1.610 2.978 2.086 4.188 3.407 4.764 4.927 4.448 2.775 2.216 1.861 1,125.983 1,125.983 3.243 3.610Ankeny 6.419 5.954 8.064 6.766 7.327 8.673 9.151 9.522 7.084 5.466 5.154 4.561 2,562.832 0.000 7.380 0.000Bondurant 0.622 0.513 0.754 0.496 0.841 0.874 0.759 1.005 0.629 0.407 0.325 0.314 229.846 0.000 0.662 0.000Clive 2.217 2.217 3.188 2.755 2.921 2.828 2.996 3.267 2.573 2.107 1.938 1.731 936.133 936.133 2.696 3.001Cumming 0.006 0.006 0.007 0.007 0.007 0.006 0.006 0.006 0.005 0.005 0.005 0.005 2.160 0.000 0.006 0.000Des Moines 49.215 40.719 88.768 59.037 65.539 58.770 85.708 77.138 54.112 40.181 36.600 33.911 21,049.962 21,049.962 60.618 67.490Greenfield Plaza/Hills of Coventry 0.287 0.287 0.396 0.429 0.556 0.343 0.459 0.387 0.351 0.220 0.248 0.216 127.317 127.317 0.367 0.408Johnston 1.489 1.489 1.570 1.321 1.589 1.608 1.799 2.056 1.736 1.514 1.439 1.372 577.871 577.871 1.664 1.853Norwalk WRF (Reported from WWTP) 1.090 1.089 1.330 1.280 1.130 1.001 0.383 0.000 0.000 0.000 0.000 0.000 220.845 220.845 0.636 0.708Norwalk WRF (L1 Jan-Dec, NOR July-Dec) 0.509 0.507 0.682 0.506 0.716 0.513 1.525 1.505 1.298 0.961 0.938 0.809 319.763 319.763 0.921 1.025Pleasant Hill 0.678 0.678 1.787 0.926 1.641 1.254 1.944 1.774 1.545 0.921 0.764 0.731 447.410 447.410 1.288 1.434Polk County 0.310 0.307 0.466 0.333 0.482 0.508 0.568 0.758 0.420 0.248 0.260 0.197 148.125 148.125 0.427 0.475Polk City 0.327 0.318 0.560 0.505 0.505 0.921 0.646 0.922 0.536 0.367 0.297 0.249 187.530 0.000 0.540 0.000Urbandale Sanitary Sewer District 5.548 5.548 9.659 7.104 7.350 6.839 7.103 8.375 6.421 4.788 4.877 4.187 2,369.884 2,369.884 6.825 7.598Urbandale-Windsor Heights Sanitary District 1.474 1.474 2.093 1.221 1.368 1.177 1.865 1.912 1.159 0.718 0.554 0.462 471.254 471.254 1.357 1.511Warren County 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000 0.000Waukee 1.713 1.198 2.165 1.366 1.407 2.355 1.414 1.925 1.326 1.143 1.143 1.013 553.424 0.000 1.594 0.000West Des Moines 6.548 6.548 10.858 9.214 9.618 10.463 12.762 13.658 9.772 7.838 7.470 6.603 3,395.349 3,395.349 9.778 10.886Total 34,725.688 31,189.896 100.000 100.000WRF Flume 69.886 61.384 122.445 84.933 95.967 87.710 121.493 115.758 83.833 62.271 57.305 57.305 31,131.057

80.062 70.462 135.325 95.352 107.185 101.540 133.852 129.137 93.415 69.659 64.228 58.222 34,725.688

*Due to new flow meter installations, various meters did not come online until later in the year. Because of unusually high flows throughout the spring and summer, prior year flows were not representative and, therefore, could not be used. For these reasons there are five different scenarios used to estimate flows at metering locations prior to their activation dates - these scenarios can be found in the information included at the back of the 2010 flows binder. Also, all metered flows were excluded during different times of excessively high flows - these periods are described in an email at the back of the 2010 flows binder.

Preliminary 2008/09/10 WRA/WRF FLOWSTHREE YEAR AVERAGE

MILLION GALLONS

Community3 Year

Average 2010 2009 2008Altoona 1,061.046 1,125.983 881.956 1,175.200Ankeny 2,341.292 2,562.832 2,206.533 2,254.511Ankeny (WRF Flow) (1) 2.348 2.696 2.000 0.000Bondurant 200.888 229.846 180.478 192.341Clive (2) 917.485 976.218 852.536 923.700Cumming 2.487 2.160 2.600 2.700Des Moines (1) 19,360.385 21,047.266 17,894.989 19,138.900Greenfield Plaza/Hills of Coventry 110.683 127.317 79.932 124.800Johnston 533.867 577.871 506.231 517.500Norwalk WRF (Reported from WWTP) (5) 297.445 220.845 348.290 323.200Norwalk WRF (L1 Jan-Dec, NOR July-Dec) 207.568 319.763 138.942 164.000Pleasant Hill 497.682 447.410 488.535 557.100Polk County 114.887 148.125 89.336 107.200Polk City 169.714 187.530 129.113 192.500Urbandale Sanitary Sewer District (2) 2,087.346 2,329.799 1,836.840 2,095.400Urbandale-Windsor Heights Sanitary District 492.629 471.254 485.832 520.800Warren County 0.000 0.000 0.000 0.000Waukee 507.429 553.424 478.979 489.884Waukee WRF Flows (3) 2.308 2.216 2.400 0.000West Des Moines (3) 3,324.499 3,393.133 3,047.764 3,532.600

Total (WRA Flows) 32,231.989 34,725.688 29,653.288 32,312.336

Total (WRF Flows) 29,010.179 31,189.896 26,655.585 28,857.200

Note To User: Any row with a note (#) has a hand entered formula and will require manual update if the hand-entered quantities change from year-to-year.

(5) Norwalk's WWTP was taken off line July 13, 2010, therefore all of Norwalk's flow will be considered WRF Flow for budget purposes for the FY2012 budget preparation.

Flows(mg)

(1) Ankeny had 2.696 million gallons of flow through their Corporate woods connection. This flow will be deducted from Des Moines' total flow. The 2009 and 2010 flows are the flows used for the 3-year average because 2009 was the first full year of flow contributed to the WRF flow.

(3) 2.216 million gallons of flow from the Waukee Painted Woods Development has been deducted from West Des Moines' total flow. The 2009 and 2010 flow is the flow used for the 3-year average because 2009 was the first full year of flow data from the Painted Woods Development even though this development was connected to the WRA conveyance system on September 1, 2009 .

(2) 40.085 million gallons of flow was added to Clive's flow and deducted from USSD's total flow.

(4) 255 million gallons of extraneous flow from North River Interceptor has been added to the I & I adjustment flow number for 2009 only and as recommended by the Flow Subcommittee at its January 12, 2010 meeting. 125 million gallons of extraneous flow will be used for 2010 only.

Preliminary 3 Year Average Flows(2008-2010)

Community3 Year

Average 2010 2009 2008 3 Year 2010 2009 2008 3 Year 2010 2009 2008Altoona 1061.0 1,126.0 882.0 1,175.2 3.657 3.610 3.309 4.072 3.292 3.243 2.974 3.637Ankeny 2341.3 2,562.8 2,206.5 2,254.5 N/A N/A N/A N/A 7.264 7.380 7.441 6.977Ankeny (WRF Flow) (1) 2.3 2.7 2.0 0.0 0.008 0.009 0.008 0.000 0.007 0.008 0.007 0.000Bondurant 200.9 229.8 180.5 192.3 N/A N/A N/A N/A 0.623 0.662 0.609 0.595Clive (2) 917.5 976.2 852.5 923.7 3.163 3.130 3.198 3.201 2.847 2.811 2.875 2.859Cumming 2.5 2.2 2.6 2.7 N/A N/A N/A N/A 0.008 0.006 0.009 0.008Des Moines (1) 19360.4 21,047.3 17,895.0 19,138.9 66.737 67.481 67.134 66.323 60.066 60.610 60.347 59.231Greenfield Plaza/Hills of Coventry 110.7 127.3 79.9 124.8 0.382 0.408 0.300 0.432 0.343 0.367 0.270 0.386Johnston 533.9 577.9 506.2 517.5 1.840 1.853 1.899 1.793 1.656 1.664 1.707 1.602Norwalk WRF (Reported from WWTP) (5) 297.4 220.8 348.3 323.2 1.025 0.708 1.307 1.120 0.923 0.636 1.175 1.000Norwalk WRF (L1 Jan-Dec, NOR July-Dec) 207.6 319.8 138.9 164.0 0.716 1.025 0.521 0.568 0.644 0.921 0.469 0.508Pleasant Hill 497.7 447.4 488.5 557.1 1.716 1.434 1.833 1.931 1.544 1.288 1.647 1.724Polk County 114.9 148.1 89.3 107.2 0.396 0.475 0.335 0.371 0.356 0.427 0.301 0.332Polk City 169.7 187.5 129.1 192.5 N/A N/A N/A N/A 0.527 0.540 0.435 0.596Urbandale Sanitary Sewer District (2) 2087.3 2,329.8 1,836.8 2,095.4 7.195 7.470 6.891 7.261 6.476 6.709 6.194 6.485Urbandale-Windsor Heights Sanitary District 492.6 471.3 485.8 520.8 1.698 1.511 1.823 1.805 1.528 1.357 1.638 1.612Warren County 0.0 0.0 0.0 0.0 N/A N/A N/A N/A 0.000 0.000 0.000 0.000Waukee 507.4 553.4 479.0 489.9 N/A N/A N/A N/A 1.574 1.594 1.615 1.516Waukee WRF Flows (3) 2.3 2.2 2.4 0.0 0.008 0.007 0.009 0.000 0.007 0.006 0.008 0.000West Des Moines (3) 3324.5 3,393.1 3,047.8 3,532.6 11.460 10.879 11.434 12.242 10.314 9.771 10.278 10.933

100.000 100.000 100.000 101.120 100.000 100.000 100.000 100.000Total (WRA Flows) 32232.0 34,725.7 29,653.3 32,312.3

Total (WRF Flows) 29010.2 31,189.9 26,655.6 28,857.2

Percentage of Total WRA Flow

(2) 40.085 million gallons of flow was added to Clive's flow and deducted from USSD's total flow. (3) 2.216 million gallons of flow from the Waukee Painted Woods Development has been deducted from West Des Moines total flow. The 2009 and 2010 flow is the flow used for the 3-year average because 2009 was the first full year of flow data from the Painted Woods Development even though this development was connected to the WRA conveyance system on September 1, 2009 .

(1) Ankeny had 2.696 million gallons of flow through their Corporate woods connection. This flow will be deducted from Des Moines' total flow. The 2009 and 2010 flows are the flows used for the 3-year average because 2009 was the first full year of flow contributed to the WRF flow.

Flows(mg) Percentage of Total WRF Flow



Prelminary 3 Year Average Flows with Adjustments(2008-2010)

Community

3 Year Average

2010 2009 2008 3 Year 2010 2009 2008 3 Year 2010 2009 2008Altoona 1061.0 1126.0 882.0 1175.2 3.827 3.776 3.481 4.193 -2.46% 3.428 3.376 3.113 3.772 -1.95%Ankeny 2341.3 2562.8 2206.5 2254.5 N/A N/A N/A N/A N/A 7.565 7.684 7.788 7.236 -3.64%Ankeny (WRF Flow) (1) 2.3 2.7 2.0 0.0 0.008 0.009 0.008 0.000 4.87% 0.008 0.008 0.007 0.000 5.42%Bondurant 200.9 229.8 180.5 192.3 N/A N/A N/A N/A N/A 0.649 0.689 0.637 0.617 -6.86%Clive (2) 917.5 976.2 852.5 923.7 3.309 3.274 3.365 3.295 -5.18% 2.964 2.927 3.009 2.965 -4.69%Cumming 2.5 2.2 2.6 2.7 N/A N/A N/A N/A N/A 0.008 0.006 0.009 0.009 -16.27%Des Moines (1) 19360.4 21047.3 17895.0 19138.9 65.198 65.984 65.420 64.161 3.59% 58.411 58.989 58.498 57.721 4.13%Greenfield Plaza/Hills of Coventry 110.7 127.3 79.9 124.8 0.399 0.427 0.316 0.445 1.57% 0.358 0.382 0.282 0.401 2.10%Johnston 533.9 577.9 506.2 517.5 1.925 1.938 1.998 1.846 -5.90% 1.725 1.733 1.787 1.661 -5.41%Norwalk WRF (Reported from WWTP) (5) 297.4 220.8 348.3 323.2 1.073 0.741 1.375 1.169 -16.29% 0.961 0.662 1.229 1.037 -15.85%Norwalk WRF (L1 Jan-Dec, NOR July-Dec) 207.6 319.8 138.9 164.0 0.749 1.072 0.548 0.585 30.93% 0.671 0.959 0.490 0.526 31.61%Pleasant Hill 497.7 447.4 488.5 557.1 1.795 1.501 1.928 1.987 -10.41% 1.608 1.341 1.724 1.788 -9.94%Polk County 114.9 148.1 89.3 107.2 0.414 0.497 0.353 0.382 -6.17% 0.371 0.444 0.315 0.344 -5.69%Polk City 169.7 187.5 129.1 192.5 N/A N/A N/A N/A N/A 0.548 0.562 0.456 0.618 -5.27%Urbandale Sanitary Sewer District (2) 2087.3 2329.8 1836.8 2095.4 7.528 7.814 7.250 7.475 -3.33% 6.744 6.985 6.483 6.725 -2.82%Urbandale-Windsor Heights Sanitary District 492.6 471.3 485.8 520.8 1.777 1.580 1.918 1.858 -11.85% 1.592 1.413 1.715 1.671 -11.40%Warren County 0.0 0.0 0.0 0.0 N/A N/A N/A N/A N/A 0.000 0.000 0.000 0.000 N/AWaukee 507.4 553.4 479.0 489.9 N/A N/A N/A N/A N/A 1.640 1.659 1.691 1.572 -5.57%Waukee WRF Flows (3) 2.3 2.2 2.4 0.0 0.008 0.0074 0.009 0.000 -14.10% 0.007 0.007 0.008 0.000 -13.65%West Des Moines (3) 3324.5 3393.1 3047.8 3532.6 11.990 11.380 12.030 12.603 -8.41% 10.742 10.173 10.757 11.338 -7.93%

Total (WRA Flows) 32232.0 34725.7 29653.3 32312.3 100.000 100.000 100.000 100.000 100.000 100.000 100.000 100.000

Total (WRF Flows) 29010.2 31189.9 26655.6 28857.2*Adjustment(I&I) (4) 1282.7 1372.6 1321.2 1154.3Adjusted WRF Flow (No I&I) 27727.5 29817.3 25334.4 28030.5Adjusted Des Moines Flow 18077.7 19674.7 16573.8 17984.6Adjusted WRA Flow 30949.3 33353.1 28332.1 31158.0

* I&I Adjustment is 4% of Total WRF Flow** % Change in WRF and WRA Flows 2009 to 2010 is based on 3-Year Average flow percentages.

**% Change WRA Flow Percentage

2009 to 2010

**% Change in WRF Flow Percentage

2009 to 2010



Flows(mg) Percentage of Total Adjusted WRF Flow Percentage of Total Adjusted WRA Flow

(1) Ankeny had 2.696 million gallons of flow through their Corporate woods connection. This flow will be deducted from Des Moines' total flow. The 2009 and 2010 flows are the flows used for the 3-year average because 2009 was the first full year of flow contributed to the WRF flow. (2) 40.085 million gallons of flow was added to Clive's flow and deducted from USSD's total flow.

(3) 2.216 million gallons of flow from the Waukee Painted Woods Development has been deducted from West Des Moines total flow. The 2009 and 2010 flow is the flow used for the 3-year average because 2009 was the first full year of flow data from the Painted Woods Development even though this development was connected to the WRA conveyance system on September 1, 2009 .

Preliminary 2010 Flows Adjusted forInflow And Infiltration

Flow

Community 2010 2010 2010Altoona 1126.0 3.776% 3.610%Ankeny (WRF Flow) 2.7 0.009% 0.009%Clive 976.2 3.274% 3.130%Des Moines(With I&I) 21047.3 65.984% 67.481%Greenfield Plaza/Hills of Coventry 127.3 0.427% 0.408%Johnston 577.9 1.938% 1.853%Norwalk WRF (Reported from WWTP) 220.8 0.741% 0.708%Norwalk WRF (L1 Jan-Dec, NOR July-Dec) 319.8 1.072% 1.025%Pleasant Hill 447.4 1.501% 1.434%Polk County 148.1 0.497% 0.475%Urbandale Sanitary Sewer District 2329.8 7.814% 7.470%Urbandale-Windsor Heights Sanitary District 471.3 1.580% 1.511%Waukee (WRF Flow) 2.22 0.007% 0.007%West Des Moines 3393.1 11.380% 10.879%Gross WRF Flow 31,189.896I&I Adjustment (4%of WRF Flows) 1,372.596WRF Flow (Adjusted for I&I) 29,817.300Des Moines (Adjusted for I&I) 19,674.670

I&I Adjusted Percentage

Non-Adjusted

Percentage

Wastewater Reclamation AuthorityBudget Allocation Implementing the Two-Tier SystemFiscal Year 2012

Greenfield Pleasant Polk Polk WestAltoona Ankeny Bondurant Clive Cumming Des Moines Plaza Johnston Norwalk Hill City County USSD UWHSD Waukee Des Moines Budget

(Expansion) (Expansion) (Expansion) (Expansion) (Expansion) (Expansion) (Expansion) (Expansion) (Expansion) (Expansion) Totals

WRA Flows:Jan-Dec 2008 1,175.2 2,256.8 192.3 923.7 2.7 17,984.6 124.8 517.5 487.2 557.1 192.5 107.2 2,095.4 520.8 492.2 3,532.6 31,162.6 2008 FlowJan-Dec 2009 882.0 2,208.5 180.5 852.5 2.6 16,573.8 79.9 506.2 487.2 488.5 129.1 89.3 1,836.8 485.8 481.4 3,047.8 28,331.9 2009 FlowJan-Dec 2010 1,126.0 2,565.5 229.8 976.2 2.2 19,674.7 127.3 577.9 540.6 447.4 187.5 148.1 2,329.8 471.3 555.6 3,393.1 33,353.0 2010 Flow total for 36 months 3,183 7,031 603 2,752 7.5 54,233 332 1,602 1,515 1,493 509 345 6,262 1,478 1,529 9,974 92,848 total for 36 months Average for 12 months 1061.1 2343.6 200.9 917.5 2.5 18077.7 110.7 533.9 505.0 497.7 169.7 114.9 2087.3 492.6 509.7 3324.5 30,949.2 Annual Average

% FLOW - WRA 3.428% 7.572% 0.649% 2.964% 0.008% 58.412% 0.358% 1.725% 1.632% 1.608% 0.548% 0.371% 6.744% 1.592% 1.647% 10.742% 100.0% WRA Flow %

WRF Flows:Jan-Dec 2008 1,175.2 2.3 923.7 17,984.6 124.8 517.5 487.2 557.1 107.2 2,095.4 520.8 2.3 3,532.6 28,030.7 2007 FlowJan-Dec 2009 882.0 2.0 852.5 16,573.8 79.9 506.2 487.2 488.5 89.3 1,836.8 485.8 2.4 3,047.8 25,334.2 2008 FlowJan-Dec 2010 1,126.0 2.7 976.2 19,674.7 127.3 577.9 540.6 447.4 148.1 2,329.8 471.3 2.2 3,393.1 29,817.3 2010 Flow total for 36 months 3,183 7 - 2,752 - 54,233 332 1,602 1,515 1,493 - 345 6,262 1,478 7 9,974 83,182 total for 36 months Average for 12 months 1061.1 2.3 0.0 917.5 0.0 18077.7 110.7 533.9 505.0 497.7 0.0 114.9 2087.3 492.6 2.3 3324.5 27,727.4 Annual Average

% FLOW - WRF 3.827% 0.008% 0.000% 3.309% 0.000% 65.199% 0.399% 1.925% 1.821% 1.795% 0.414% 7.528% 1.777% 0.008% 11.990% 100.0% WRF Flow %

THREE YEAR FLOW INFORMATION - for Budget

Des Moines Metropolitan Wastewater Reclamation Authority

2012+ Capital Improvements Program

sthutchens

Text Box

Item 5

Summary

Wastewater Reclamation Authority ImprovementsFY2012+

Col. 1 2 3 4 5 6 7 8 9 10 11 12 13

F12 F13 F14 F15 F16 F17

Expenses, detail on following page 496,163,514 140,383,195 74,260,301 214,643,496 204,786,675 111,976,133 52,947,868 24,612,674 9,350,000 2,850,000 3,050,000 76,733,343Resources:

Beginning Balance 0 0 50,100,637 0 73,891,791 32,529,692 15,696,224 5,000,000 (1,200,000) (1,000,000) 0

Interest Earnings 945,939 549,333 47,293 596,626 349,313 99,313 50,000 50,000 50,000 50,000 50,000 0

Renewal & Replacement Fund 3,298,491 3,298,491 0 3,298,491 0 0 0 0 0 0 0 0

Communities 31,986,859 11,664,584 2,650,000 14,314,584 17,672,275 2,822,275 2,900,000 2,950,000 3,000,000 3,000,000 3,000,000 0

Future Funding 116,262,518 76,180 (76,180) 0 39,529,175 2,202,725 26,520,000 10,806,450 0 0 0 76,733,343

Bond Proceeds 85,152,284 86,135,942 3,486,342 89,622,284 (4,470,000) (4,470,000) 0 0 0 0 0 0

SRF Drawdowns 253,208,541 86,883,270 91,244,000 178,127,270 75,081,271 68,576,871 6,504,400 0 0 0 0 0

Other 4,308,882 1,876,032 700,000 2,576,032 1,732,850 1,382,850 150,000 100,000 100,000 0 0 0

Total Resources 495,163,514 190,483,832 148,152,092 288,535,287 129,894,884 144,505,825 68,654,092 29,602,674 8,150,000 1,850,000 2,050,000 76,733,343.

g

COST FOR SIX-YEAR

PERIOD

RECOMMENDED AND SCHEDULED FOR SIX-YEAR PERIODCOST

BEYOND F17

TOTAL ESTIMATED

COST

COST THROUGH

F10

REVISED ESTIMATE

F11

TOTAL ESTIMATED

COST THROUGH F11

2/4/2011

WASTEWATER RECLAMATION AUTHORITYCOMPARISON OF LAST YEAR AND CURRENT YEAR CIP SHEETS

FY2012Capital Improvement Projects by Type of Funding

[last year] [this year]

Chg of EstimateCore Projects 2011 BOOK 2011 BOOK 2012 FILE

wra 086 DM River Outfall / New Main Outfall P 17 40,899,269 40,899,269 47,502,119 6,602,850 wra 087 Combined Sewer Solids Separation Design P 17 66,706,200 66,706,200 52,316,995 (14,389,205)

107,605,469 107,605,469 99,819,114 wra 088 Ingersoll Run Sewer P 25 2,707,069 2,707,069 2,707,069 - wra 080 Westside Basin Interceptor P 4 6,764,543 6,764,543 6,648,068 (116,475) wra 093 Flow Monitoring System 5,517,381 5,517,381 5,946,782 429,401 wra 084 Emission Reduction * 6,038,059 6,038,059 6,039,734 1,675 wra 077 Power Generation System 4,225,052 4,225,052 4,225,052 - wra 074 Digester Gas System 25,605,000 25,605,000 24,315,000 (1,290,000)

Subtotal Core Projects 158,462,573 158,462,573 149,700,819 (8,761,754)

Expansion Projects wra 085 Ankeny Four Mile Interceptor Ext. P 24 20,995,617 20,995,617 20,790,917 (204,700) wra 097 FourMi Interceptor Improv. P 23 30,618,863 30,618,863 29,081,865 (1,536,998) wra 095 Little Four Mile Int. South p15 * 4,267,716wra 089 Little Four Mile Int. Ext. P15 * 2,717,478 2,717,478 2,720,978 3,500 wra 090 Middle Creek Trunk Sewer P 20 7,511,268 7,511,268 7,449,522 (61,746) wra 099 Mud Creek Interceptor P 19 16,424,000 16,424,000 19,422,436 2,998,436 wra 100 Corridor Preservation v 400,000 400,000 - wra 082 WDM Outfall P 13 17,857,829 17,857,829 17,628,594 (229,235) wra 092 WDM Outfall Ext. P 18 10,988,118 10,988,118 10,998,042 9,924

Subtotal Expansion Projects 111,380,889 107,513,173 108,492,354 979,181

- wra 081 South West Area Diversion Facilities P 22 80,373,684 80,373,684 85,986,885 5,613,201 wra 103a Southern Tier Improvements for SW Area Div v 0 12,700,000 12,710,400 10,400

South West Area Diversion Facilities 80,373,684 93,073,684 98,697,285 5,623,601

Future Projects (Core & Expansion) core Nutrient Removal 33,338,242 33,338,242 33,338,242 - core Birdland Pump Stn 8,192,700 8,192,700 8,192,700 - wra 102 Westside Supplemental Equalization Basin 17,200,000 17,200,000 17,200,000 - wra 101 Additional Equalization Basin 10,200,000 10,200,000 10,200,000 - expan Common Trunk & Joint Trunk 24,828,971 24,828,971 24,828,971 - wra 103b Southern Tier Improvements v 24,311,496 11,611,496 10,373,430 (1,238,066)

Subtotal Future Projects 118,071,409 105,371,409 104,133,343 (1,238,066) -

Total Bonded Project Costs 468,288,555 464,420,839 461,023,801 (3,397,038)

Non-Bonded / Plant & System Projectswra 069 Facilities Plan Update 885,640 885,640 1,035,640 150,000 wra 096 Transition / RE Transfer Costs (see note below) 440,000 440,000 440,000 - wra 078 Facilities Rehabilitation, including RE purchases 2,216,788 2,216,788 2,566,788 350,000 wra 083 Sewer Maintenance contract work 0 700,000 700,000 wra 104 Equalization Basin Improvements (I-Jobs) 1,000,000 1,000,000 1,336,450 336,450 wra 100 Corridor Preservation v 400,000wra 070 Process Equipment Replmt 2004-2009 6,903,475 6,903,475 6,903,475 - wra 091 Small CIP current projects 2008-2009 2,850,000 2,850,000 3,000,000 150,000 wra 098 Small CIP projects & ProcEqRepl. 2010-2011 4,732,360 4,582,360 (150,000) wra 098a Small CIP projects & ProcEqRepl. 2012 2,380,000 4,545,000 2,165,000 wra 1xx Small CIP future projects & future ProcEqRepl. 17,157,360 10,045,000 10,030,000 (15,000)

- -

Total Non-Bonded Project Costs 31,853,263 31,453,263 35,139,713 3,686,450 - -

WRA Total Expenses for Projects 500,141,818 495,874,102 496,163,514 289,412

RE = Real Estate (after 2004 WRA listed as title holder) 500141818 L/yr CIP $* PROJECT CLOSED 496,163,514 SUMMARY TOTALv PROJ CATEGORY CHG

Budget Amount for each project



1/14/2011 CIP file rv

Wastewater Reclamation AuthorityCIP Spending by Project and Category

WRA 2012

Expenditures from CIP sheets subtotal2011 2012 2013 2014 2015 2016 2017 Spending

WRA Projects - Expansion Category85 P24 Four Mile Interceptor Ext. 5,802,576.0$ 3,572,059.0$ 699,863.0$ 10,074,498.0$ 97 P23 Four Mile Interceptor 10,890,011.0 2,632,977.0 37,423.0 13,560,411.0 95 P15 Little Four Mile Int. South Seg 2 - 82 P13 WDM Outfall 841,770.0 3,868,800.0 1,141,400.0 5,851,970.0 92 P18 WDM Outfall Ext. 1,285,074.0 2,945,186.0 4,230,260.0 99 P19 Mud Creek 87,000.0 7,151,664.0 8,485,152.0 3,698,620.0 19,422,436.0

101 placHold Additional Equalization Basin 200,000.0$ 5,000,000.0$ 5,000,000.0$ 10,200,000.0 100 Corridor Preservation 168,791.0 100,000.0$ 50,000.0$ 318,791.0 103 b Southern Tier Improvements -

Expansion Funding Ttl 19,075,222.0$ 20,270,686.0$ 10,613,838.0$ 8,698,620.0$ 5,000,000.0$ -$ -$ 63,658,366.0$

WRA Projects - SW Area Div. Category81 P21,22 SW Area Diversion Project 18,780,650.0 28,443,860.0$ 5,102,843.0$ 52,327,353.0

103 a Southern Tier for SW ADF 1,738,641.0 6,528,600.0$ 4,442,100.0$ 12,709,341.0

SW Area Funding Ttl 20,519,291.0$ 34,972,460.0$ 9,544,943.0$ -$ -$ -$ -$ 65,036,694.0$

WRA Projects - Core Category86 P17 DM River Outfall / Main Outfall 3,920,738.0$ 23,486,600.0$ 7,714,500.0$ 35,121,838.0 87 P17 CSSS Facility 13,910,331.0 18,298,880.0 10,832,224.0 4,760,517.0$ 47,801,952.0 88 P25 Ingersoll Run CSO 126,137.0 15,000.0 141,137.0 74 P1 Digester Improvements 8,887,740.0 9,610,000.0 3,280,366.0 21,778,106.0 93 P25 Flow Monitoring Seg 3 540,461.0 277,862.0 91,997.0 31,950.0 942,270.0

104 I Jobs Equalization Basin Improvements 1,020,260.0 311,587.0$ 1,331,847.0 102 * Westside Suppl. Equalization Basin 1,200,000.0 8,000,000.0 8,000,000.0 17,200,000.0 80 P4 Westside Basin Interceptor Seg 2 1,376,206.0 219,645.0 1,595,851.0

29,781,873.0$ 53,107,987.0$ 29,919,087.0$ 13,104,054.0$ -$ -$ -$ 125,913,001.0$

2011 2012 2013 2014 2015 2016 2017WRA Plant Projects - Annual Community Contributions

69 Facility Plan update 92,989.0$ 100,000.0$ 100,000.0$ 100,000.0$ 100,000.0$ 100,000.0$ 100,000.0$ 692,989.0 70 Process Equipment Repl. (see 98) 105,126.0 105,126.0 78 Facilities Rehabilitation 214,337.0 200,000.0 250,000.0 200,000.0 200,000.0 200,000.0 200,000.0 1,464,337.0 77 Power Generation System 1,500,000.0 83 Sewer Maintenance 200,000.0 150,000.0 150,000.0 100,000.0 100,000.0 96 Transition Costs 188,896.0 188,896.0 91 Small CIP & Studies 1,094,503.0 100,000.0 100,000.0 40,000.0 30,000.0 30,000.0 30,000.0 1,424,503.0 98 Plant Projects, including Eq. Repl. 2,988,064.0 3,075,000.0$ 2,270,000.0$ 2,370,000.0$ 2,420,000.0$ 2,520,000.0$ 2,720,000.0$ 18,363,064.0

4,883,915.0$ 3,625,000.0$ 2,870,000.0$ 2,810,000.0$ 4,350,000.0$ 2,850,000.0$ 3,050,000.0$ 22,238,915.0$

Revised Estimate for F11 74,260,301.0$

2012 111,976,133.0$ 2013 52,947,868.0$ 2014 24,612,674.0$ 2015 9,350,000.0$ 2016 2,850,000.0$ 2017 3,050,000.0$

Summary of Costs, Six-Year-Period . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 204,786,675.0$

1/14/2011

Fiscal 2012/Fiscal 2017 Capital Improvements Program

ACCOUNT

WRA Facility Plan Update [ commty funded from WRA098 ]AG267

WRA990000 WRA069

TOTAL COST ACTUAL COST REVISED ESTIMATED COSTESTIMATED THROUGH COST IN THROUGH BUDGET COST THROUGH BEYOND

COST F09 F10 F10 F11 F11 F12 F13 F14 F15 F16 F17 F17

Expenses 1,035,640 262,052 80,599 342,651 92,989 435,640 100,000 100,000 100,000 100,000 100,000 100,000

Beginning Balance 2,989Interest Earnings 15,000 12,870 2,130 15,000 15,000Repair and Replacement FundCommunities 330,640 260,000 70,640 330,640 330,640Future FundingBond ProceedsSRF DrawdownsOther / commty funds 098 690,000 90,000 90,000 100,000 100,000 100,000 100,000 100,000 100,000Total Resources 1,035,640 272,870 72,770 345,640 92,989 435,640 100,000 100,000 100,000 100,000 100,000 100,000

ENDING BALANCE 0 10,818 (7,829) 2,989 0 0 0 0 0 0 0 0 0

Description:This project provides for an update of the original ICA Facility Plan in anticipation of needs through the year 2020. Core projects and expansion projects are included in the facility plan. Funding in years F05 through F11 are discretionary for use in funding special studies and special assistance to the authority in implementing the facility plan including cost updates and bond projections. Funding in F07 and beyond includes financial planning and bond council.

PROJECT CATEGORY PROJECT TITLE

Wastewater Reclamation Authority Improvements

RECOMMENDED AND SCHEDULED FOR SIX-YEAR PERIOD

Justification:

Scheduling:

Relationship to General Plan and Other Projects:

Operating Budget Effect:

Beginning F10 funding source will be a transfer from WRA098, R&R community funds.

The original 201 and 208 studies were completed in 1978 and 1982, respectively, and current growth levels are beyond the expectations of those studies. The study will identify the needs of the WRA through 2020.

The WRA Facility Plan was approved by the WRA Board and submitted to IDNR in March, 2004. Plan implementation started in F04.

WRA Flow


ACCOUNT

WRF Process Equipment Replacement [ transferring to WRA098 in 2010 ]AG267

WRA990000 WRA070



Expenses 6,903,475 6,183,867 614,482 6,798,349 105,126 6,903,475

Beginning Balance 105,126Interest Earnings 378,485 375,010 3,475 378,485 378,485Repair and Replacement Fund 1,948,191 1,948,191 1,948,191 1,948,191Communities 4,503,443 4,503,443 4,503,443 4,503,443Future FundingBond ProceedsSRF DrawdownsOther, SALE of Equip 73,356 73,356 73,356 73,356Total Resources 6,903,475 6,900,000 3,475 6,903,475 105,126 6,903,475

ENDING BALANCE 0 716,133 (611,007) 105,126 0 0 0 0 0 0 0 0 0

Description:

Renewal and replacement of existing process equipment through F10 with projects completed in F11.




Justification:

Process equipment installed between 1987 and 1993 is nearing the end of its useful life and will require replacement. Other major replacements are budgeted individually.

Projections beyond 2006 are second tier replacement as equipment wears out over typical fifteen year service life and the magnitude may increase with inflation.

Scheduling:


Process equipment replacements will be done in WRA098 after F10.


This project will maintain the current level of service and reduce operations and maintenance costs.

F10: Rebuild Final Clarifier Drives, Replace Return sludge Lines Joints 45-3, Primary Clarifier Drives 1 & 4 rebuild, Repair/repl Transformers.

F08: Network replacement for process control system, Building 12 conveyors, Return sludge piping repairs.

F09: Rebuild Clarifier Drives, Replace Return sludge Lines Joints 45-1, Blast and recoat final clarifiers.

WRA Flow

Fiscal 2012/Fiscal 2017 Capital Improvements ProgramACCOUNT

WRF Small Capital Projects 2006-2009 & WRA Studies [ funded from WRA098 ]AG267

WRA990000 WRA091

TOTAL COST ACTUAL COST REVISED ESTIMATED COST

ESTIMATED THROUGH COST IN THROUGH BUDGET COST THROUGH BEYOND


Expenses 3,000,000 1,072,676 502,821 1,575,497 1,094,503 2,670,000 100,000 100,000 40,000 30,000 30,000 30,000

Beginning Balance 1,252,228 157,725 80,000Interest Earnings

Repair and Replacement Fund

Communities 2,850,000 2,850,000 2,850,000 2,850,000Future Funding

Bond Proceeds

SRF Drawdowns

Other / WRA100 & WRA098 150,000 (22,275) (22,275) (22,275) 22,275 30,000 30,000 30,000 30,000 30,000Total Resources 3,000,000 2,827,725 2,827,725 1,252,228 2,827,725 180,000 110,000 30,000 30,000 30,000 30,000

ENDING BALANCE 0 1,755,049 (502,821) 1,252,228 157,725 157,725 80,000 10,000 (10,000) 0 0 0 0

Description:This funds are utilized for process and safety improvements at the WRF and WRA facilities.




This funds are utilized for process and safety improvements at the WRF and WRA facilities.

Justification:These modifications are necessary to reduce operations and maintenance costs and facilitate a safer working environment.

Scheduling:F07: Asphalt road work at west end of plant;Electric Cart Storage Shed;Scum Valve Controllers;VFD's for PAB; Unanticipated NeedsF08:Wireless system for operations control, Vehicle Storage Building.F09:Automatic Lubrication, Bar Screen, Motor Modifications, W3 Valve, Utility drawings Update.F10: Utility mapping, Building 35 Blower drive installation.F11: Bar screen repairs F12 to F17: funding studies, as neededRelationship to General Plan and Other Projects:Funds advanced for corridor preservation will be returned to this project after the scheduled bond issue provides permanent funding.


WRA Flow


ACCOUNT

WRF Small Projects, & Process Equipment Repl for 2010 & 2011AG267

WRA990000 WRA098



Expenses 4,582,360 794,296 794,296 2,988,064 3,782,360 800,000

Beginning Balance 1,553,064 800,000Interest Earnings 25,000 25,000 25,000Repair and Replacement FundCommunities 4,997,360 140,958 2,206,402 2,347,360 2,650,000 4,997,360Future FundingBond ProceedsSRF DrawdownsOther (tsfr out) (440,000) (440,000) (440,000)Total Resources 4,582,360 140,958 2,206,402 2,347,360 3,788,064 4,582,360 800,000

ENDING BALANCE 0 140,958 1,412,106 1,553,064 800,000 800,000 0 0 0 0 0 0 0

Description:

Renewal and replacement of existing process equipment. Small plant projects and studies.




Justification:

Process equipment installed between 1987 and 1993 is nearing the end of its useful life and will require replacement. Other major replacements are budgeted individually.

Scheduling:


This project will be funded with interest earnings from R&R reserve fund and community contributions. Transfers out will provide funding to other R&R projects.



F10: Primary and final clarifier repairs, Server power replacement, PCS upgrade, B70 second floor lighting, CMMS modifications, W3 Pump station Imprv, Unanticipated needs.

F11: Primary and final clarifier repairs, Server virtualization, IP camera deployment, Bar Screen #1 repl, Sump Pump repl, Main Pump motor rebuild, Unanticipated needs.

F12+: Algae sweep at Final clarifiers, Grit chamber modifications.

WRA Flow


ACCOUNT

WRF Small Projects, & Process Equipment Repl for 2012 & 2013AG267

WRA990000 WRA098



Expenses 4,545,000 2,275,000 2,270,000

Beginning BalanceInterest Earnings 75,000 25,000 50,000Repair and Replacement FundCommunities 5,700,000 2,800,000 2,900,000Future FundingBond ProceedsSRF DrawdownsOther (tsfr out) (1,230,000) (550,000) (680,000)Total Resources 4,545,000 2,275,000 2,270,000

ENDING BALANCE 0 0 0 0 0 0 0 0 0 0 0 0 0

Description:

Renewal and replacement of existing process equipment, includes small plant projects.




Justification:

Annual plant maintenance over $5,000 in amount that reduces operating repair costs and extends the useful life of the asset.

Scheduling:





W3 improvements in F13 - F14 ($1,000,000)

Bar screen replacement in F12 - F13 ($1,800,000)

Also in F12 - F13: PFS storage shed, Biogas pipeline and burner upgrade

WRA Flow


ACCOUNT

WRF Studies, Small Projects, & Process Equipment ReplacementAG267

WRA990000 WRA098



Expenses 10,030,000 2,370,000 2,420,000 2,520,000 2,720,000

Beginning BalanceInterest Earnings 200,000 50,000 50,000 50,000 50,000Repair and Replacement FundCommunities 11,950,000 2,950,000 3,000,000 3,000,000 3,000,000Future FundingBond ProceedsSRF DrawdownsOther (tsfr out) (2,120,000) (630,000) (630,000) (530,000) (330,000)Total Resources 10,030,000 2,370,000 2,420,000 2,520,000 2,720,000

ENDING BALANCE 0 0 0 0 0 0 0 0 0 0 0 0 0

Description:

Renewal and replacement of existing process equipment, includes small plant projects.




Justification:

Scheduling:





This sheet is for future WRF projects

WRA Flow


WRA Sewer Maintenance (Inspections & Repairs)AG267

WRA990000 WRA083




Expenses 700,000 200,000 200,000 150,000 150,000 100,000 100,000

Beginning Balance

Interest Earnings


Communities

Future Funding

Bond Proceeds

SRF Drawdowns

Other 700,000 200,000 200,000 150,000 150,000 100,000 100,000Total Resources 700,000 200,000 200,000 150,000 150,000 100,000 100,000

ENDING BALANCE 0 0 0 0 0 0 0 0 0 0 0 0 0

Description: Expansion project.This project provides funding for annual engineering investigations for portions of the WRA interceptor sewer system and for specific maintenance/repairs of those sewers. Maintenance and repairs will include: Sewer televising, sewer cleaning, sewer lining, manhole rehabilitation and rebuilding, sewer spot repairs, sink hole repairs, replacement of manhole lids and castings, etc.




Justification:

Scheduling:F12 Investigate the Westside/Beaver Creek interceptor sewer. F13 Investigate the western portion of the Southern Tier interceptor sewer.Relationship to General Plan and Other Projects:

Operating Budget Effect:These investigations will identify repairs that will increase operating costs in future budgets on a proactive basis rather than reactive spending.

This project is funded with Operating Money.

Portions of the WRA conveyance system are over fifty years old and there is a need to investigate, evaluate, and determine maintenance on the overall interceptor sewer system. This project sets aside funding for planned and unanticipated sewer repairs in the conveyance system.

WRF Flow


ACCOUNT

WRF Power Generation System [ funded from WRA098 ]AG267

WRA990000 WRA077

TOTAL COST ACTUAL COST REVISED ESTIMATEDESTIMATED THROUGH COST IN THROUGH BUDGET COST THROUGH


Expenses 4,225,052 2,207,012 518,040 2,725,052 2,725,052 1,500,000

Beginning Balance 237,457 150,000 400,000 700,000 1,000,000 (200,000)Interest EarningsRepair and Replacement Fund 1,033,512 1,823,312 (789,800) 1,033,512 1,033,512Communities 173,118 173,118 173,118 173,118Future FundingBond Proceeds 1,518,422 2,268,398 (512,519) 1,755,879 (237,457) 1,518,422SRF DrawdownsOther / commty funds 098 1,500,000 150,000 150,000 250,000 300,000 300,000 300,000 200,000Total Resources 4,225,052 4,091,710 (1,129,201) 2,962,509 150,000 2,875,052 400,000 700,000 1,000,000 1,300,000

ENDING BALANCE 0 1,884,698 (1,647,241) 237,457 150,000 150,000 400,000 700,000 1,000,000 (200,000) 0 0 0

Description:

F15 expenditure for engine rebuilds (anticipate every seven years).

F03 and F04 expenditures are for overhauling the engine drive system and replacing controls and heat recovery improvements. F09 cost are for overhauling one generator. F10 costs are for overhauling two generators.




Justification:

The engines burn the by-product gas produced by the digesters to produce electricity saving more than $300,000 annually. New technology offers lower O&M cost and produce

more electricity. Engine overhauls are required every 25,000 hours. A planned additional generator was not required because of the agreement with Cargill to purchase gas.

Scheduling:Conduct a study in F01 with design in F03 and construction in F04-F05. F09 costs are for rebuilding one generator.

The completed study will provide more information on project implementation.

Relationship to General Plan and Other Projects:F06 were included in the facility plan; F10 costs will be funded with bond issues from 2004/2006. Part of the costs prior to 2004 will now be funded with R&R money.


This project will result in a decrease in long-term operations and maintenance costs.

WRA Flows


ACCOUNT

WRF Facilities Rehabilitation [ funded from WRA098 ]AG267

WRA990000 WRA078



Expenses 2,566,788 824,881 277,570 1,102,451 214,337 1,316,788 200,000 250,000 200,000 200,000 200,000 200,000

Beginning Balance 14,337Interest Earnings 50,000 50,000 50,000 50,000Repair and Replacement Fund 316,788 316,788 316,788 316,788Communities 750,000 750,000 750,000 750,000Future FundingBond ProceedsSRF DrawdownsOther / commty funds 098 1,450,000 200,000 200,000 200,000 250,000 200,000 200,000 200,000 200,000Total Resources 2,566,788 1,116,788 1,116,788 214,337 1,316,788 200,000 250,000 200,000 200,000 200,000 200,000

ENDING BALANCE 0 291,907 (277,570) 14,337 0 0 0 0 0 0 0 0 0

Description:

Justification:




These projects are for non-process repair and replacement projects at the WRF and off-site WRA facilities.

Justification:

Scheduling:


Operating Budget Effect:These projects will reduce operations and maintenance costs in future years.

F09: Roof Replacement on Building 35, HVAC Improvements.

F10: Roof Replacement on Buildings 70 & 94, HVAC Improvements.

F11: Replace Airhandling units in Buildings 12, 26, 27 & 28, HVAC Improvements.

This project received interest earnings from the $10,000,000 R&R balance prior to 2010. Community funding thru WRA098 will provide future funding of WRA078 expense.

As buildings and infrastructure age, capital projects will be required to preserve facilities in a serviceable condition.

WRA Flow


ACCOUNT

WRF Digester ImprovementsAG267

WRA990000 WRA074



Expenses 24,315,000 1,294,491 1,242,403 2,536,894 8,887,740 11,424,634 9,610,000 3,280,366

Beginning Balance 20,828,106 11,990,366 2,380,366Interest EarningsRepair and Replacement FundCommunitiesFuture Funding 900,000 900,000Bond Proceeds 150,000 100,000 100,000 50,000 150,000SRF Drawdowns 23,265,000 1,994,250 21,270,750 23,265,000 23,265,000Other / from Small CIP

Total Resources 24,315,000 2,094,250 21,270,750 23,365,000 20,878,106 23,415,000 11,990,366 3,280,366

ENDING BALANCE 0 799,759 20,028,347 20,828,106 11,990,366 11,990,366 2,380,366 0 0 0 0 0 0

Description:




F10 improvements will involve improving the mixing system, replacing the insulated covers with fixed concrete covers, and upgrading the digester gas system.

Justification:

Scheduling:



Included in 28E bonding schedule. F09 P&D Loan for Design ($3205,000 with $1,994,250 drawn). F10 SRF loan (series 2010C $2+21.5 million closed on 6/30/10).

This project will result in a decrease in long term operations and maintenance costs with potential increased revenues.

The study and design are scheduled for F09 with construction in F09 through F12. A study was done in F08 to investigate a method of increasing gas production and reducing solids with the results used in the design of these improvements. Change in estimate F10: Exhibit 31 estimates brought current.

Digester gas contains hydrogen sulfide which corrodes components necessitating replacement. The equipment must be replaced in order to maintain the current level of service and reduce maintenance costs. This project will result in delivery of higher quality gas to the engine generators. Some improvements are necessitated by the increase in gas production that will require larger piping and appurtenances.

WRA Flow


WRA Westside Interceptor Basin & WSPS Mitigation ServicesAG267

WRA990000 WRA080




Expenses 6,648,068 4,938,353 113,864 5,052,217 1,376,206 6,428,423 219,645

Beginning Balance 437,031 469,645Interest Earnings 269 269 269 269Repair and Replacement Fund

Communities 23,141 23,141 23,141 23,141Future Funding 76,180 76,180 (76,180)Bond Proceeds 5,139,658 5,389,658 5,389,658 5,389,658 (250,000)SRF Drawdowns 1,485,000 1,485,000 1,485,000Other

Total Resources 6,648,068 5,413,068 76,180 5,489,248 1,845,851 6,898,068 219,645ENDING BALANCE 0 474,715 (37,684) 437,031 469,645 469,645 0 0 0 0 0 0 0

Description: Expansion project.The project has increased the capacity of the pump station from 20 mgd to 35 mgd and replaced controls and associated equipment. F09 Expenditure amount does not include costs fro flood damage / replacements that will be FEMA reimbursed or funded with insurance. F10 Expenditures are mitigation that will not be reimbursed by FEMA but will be required to protect the facility from flooding.




Justification:

Scheduling:F10 Improvements will provide increased flood protection around the equalization basin.

Relationship to General Plan and Other Projects:This project is included in the WRA Faciltiy Plan Update. After flooding in 2008, additional mitigation projects were added.

Operating Budget Effect:Increase revenues and operations and maintenance costs.

The existing equipment is aging and has been exposed to harsh operating conditions. The capacity of the pump station has increased.

WRA Flow


ACCOUNT

Southwest Area Diversion Facilities Phase 21 and 22AG267

WRA990000 WRA081



Expenses 85,986,885 29,251,426 4,408,106 33,659,532 18,780,650 52,440,182 28,443,860 5,102,843

Beginning Balance 16,733,353 17,356,703 3,102,843Interest EarningsRepair and Replacement FundCommunitiesFuture Funding 2,000,000 2,000,000Bond Proceeds 19,023,085 25,623,085 25,623,085 25,623,085 (6,600,000)SRF Drawdowns Available 64,963,800 16,354,800 8,415,000 24,769,800 19,404,000 44,173,800 20,790,000Other / LOAN to WRA092

Total Resources 85,986,885 41,977,885 8,415,000 50,392,885 36,137,353 69,796,885 31,546,703 5,102,843

ENDING BALANCE 0 12,726,459 4,006,894 16,733,353 17,356,703 17,356,703 3,102,843 0 0 0 0 0 0

Description: Core/expansion project.




Two thirds of the facilities support core communities and one third supports expansion communities. This project will divert flows from the Southwest Outfall Interceptor Sewer during wet weather and store in an equalization facility. Peak wet weather flows will be stored and then treated during low flow periods. Equalization will reduce the impact of wet weather events at the WRF. This project will also provide a connection for the City of Norwalk. Phase 21, segments 1 and 2, North River Interceptor will convey wastewater from the Norwalk wastewater treatment plant to the Southern Tier pump station. Phase 22, segments 1 through 6, will pump, convey, and store wastewater from the westside of the WRA service area.

Justification:This project is necessary to provide flow equalization for the central and western WRA conveyance system.

Scheduling:

Phase 22, Segment 1 - F10, P22seg. 2 - F08/09, P22seg. 3 - F11Phase 22, Segment 4 - F12, P22seg. 5 - F12, P22seg. 6 - F11/12


This project is included in the WRA Facility Plan Update. Two thirds of these facilities support core communities and one third supports expansion communities.


This project will increase revenues and operations and maintenance costs.

The time sensitive reach will be designed in F08 and constructed in F08/F09. The North River Interceptor will be constructed in F08, and F09. The diversion sewer will be will be constructed in F10, F11, and F12. The pump station, force main, flow equalization and interceptors will be constructed in F09, F10, and F11. Phase 21 - F08/09.

SW funding split

Fiscal 2012/Fiscal 2017 Capital Improvements Program /Working Copy for January review

ACCOUNT

West Des Moines Outfall Phase13AG267

WRA990000 WRA082

TOTAL COST ACTUAL COST REVISED ESTIMATED COSTESTIMATED THROUGH COST IN THROUGH BUDGET COST THROUGH

COST F09 F10 F10 F11 F11 F12 F13 F14 F15 F16 F17 FY2015

Expenses 17,628,594 8,983,016 2,793,608 11,776,624 841,770 12,618,394 3,868,800 1,141,400

Beginning Balance 1,537,315 235,545 1,141,400Interest EarningsRepair and Replacement FundCommunitiesFuture FundingBond Proceeds 708,394 1,168,394 1,168,394 (460,000) 708,394SRF Drawdowns 16,920,200 3,829,545 8,316,000 12,145,545 12,145,545 4,774,655Other

Total Resources 17,628,594 4,997,939 8,316,000 13,313,939 1,077,315 12,853,939 5,010,200 1,141,400

ENDING BALANCE 0 (3,985,077) 5,522,392 1,537,315 235,545 235,545 1,141,400 0 0 0 0 0 0

Justification:

Scheduling:


This project is included in the WRA Facility Plan Update. Bonding was scheduled for 2007,2010,2015.


Revenues and operations and maintenance costs will increase as flows increase.

F04:Construction from s 1st Street to S4th Street;F07:Design of entire project from Southwest Area Diversion Facility to South 60th Street;F08:Construction from S33rd street to S60th Street;F10:Construction from Southwest Area Diversion Facility to South 16th Street; Moved from F16 to F12 to take advantage of favorable bidding climate and avoid conflict with work planned at Raccoon River Park: Construction from South 16th Street to South 33rd Street.

As service is provided to new customers the capacity of the sewer must be increased. This project will serve West Des Moines and Waukee and is necessary to increase conveyance capacity.




Description: Expansion Project.This project increases the capacity of the West Des Moines Outfall and provides service to new areas including the city of Waukee. The project will provide a connection to the Southwest Area Diversion Facility at it's east terminus and a connection to the West Des Moines Outfall Extension on it's west terminus.

Expansion Flow


ACCOUNT

WRF Emission ReductionAG267

WRA990000 WRA084



Expenses 6,039,734 6,037,401 2,333 6,039,734 6,039,734

Beginning Balance 500,000Interest Earnings 21,519 3,124 18,395 21,519 21,519Repair and Replacement FundCommunities 226,882 400,000 (173,118) 226,882 226,882Future FundingBond Proceeds 5,789,658 6,289,658 6,289,658 (500,000) 5,789,658SRF DrawdownsOther / Mid-Amer rebate 1,675 1,675 1,675 1,675Total Resources 6,039,734 6,694,457 (154,723) 6,539,734 6,039,734

ENDING BALANCE 0 657,056 (157,056) 500,000 0 0 0 0 0 0 0 0 0

Description: Core Project This project is for emission reduction at the WRF to comply with local, state and federal regulations. The study and design was completed in F05. Construction of the Phase I facilities began in F06 and will be completed in F07. Capital costs will include facilities to convey and reduce odorous emissions from certain processes at the WRF. Some control measures may take place in the conveyance system in future years.




Justification:

The WRF must comply with regulations regarding emissions

Scheduling:

Design F05. Construction in F06, F07, F08 and F09.


This project is included in the WRA Facility Plan Update. This project is complete. Remain bond funds will be re-allocated (see Dec 2010 resolutions) to other Core Projects.


This project will increase the operating budget.

WRA Flow


ACCOUNT

WRA Four Mile Interceptor Extension Phase 24AG267

WRA990000 WRA085



Expenses 20,790,917 10,086,560 629,859 10,716,419 5,802,576 16,518,995 3,572,059 699,863

Beginning Balance 159,498 2,921,922 199,863Interest EarningsRepair and Replacement FundCommunitiesFuture Funding 500,000 500,000Bond Proceeds 11,847,988 10,247,988 300,000 10,547,988 450,000 10,997,988 850,000SRF Drawdowns 8,415,000 300,000 300,000 8,115,000 8,415,000Other / POLK CO. 27,929 27,929 27,929 27,929Total Resources 20,790,917 10,575,917 300,000 10,875,917 8,724,498 19,440,917 3,771,922 699,863

ENDING BALANCE 0 489,357 (329,859) 159,498 2,921,922 2,921,922 199,863 0 0 0 0 0 0

Description: Expansion Project.

Segment 1: Broadway to NE 29th Street south of Oralabor Road.

Segment 2: NE 29th Street south of Oralabor Road to Southeast Ankeny wastewater pollution control plant.




Justification:

Scheduling:


The Four Mile Interceptor Extension will provide a full size downstream connection for Ankeny. This project is included in the WRA Facility Plan Update.


Revenues and operations and maintenance costs will increase.

This project is necessary to provide service to the City of Ankeny.

Segment 1&2: Design-F04/05, Construction-F05/06. Segment 3&4: Design-F09/10, Construction-F10/12.

Expansion Flow


Des Moines River Outfall / New Main Outfall Phase 17AG267

WRA990000 WRA086




Expenses 47,502,119 11,982,806 397,475 12,380,281 3,920,738 16,301,019 23,486,600 7,714,500

Beginning Balance 814,600 1,025,208 7,004,470 4,514,500Interest Earnings


Communities

Future Funding 3,200,000 3,200,000Bond Proceeds 11,813,279 15,413,279 (3,600,000) 11,813,279 11,813,279SRF Drawdowns 32,125,500 1,461,720 1,461,720 9,900,000 11,361,720 20,763,780Other / Utility credits, CDM 363,340 130,490 130,490 130,490 232,850Total Resources 47,502,119 17,005,489 (2,785,400) 13,405,489 10,925,208 23,305,489 28,001,100 7,714,500

ENDING BALANCE 0 5,022,683 (3,182,875) 1,025,208 7,004,470 7,004,470 4,514,500 0 0 0 0 0 0

Description: Core Project.This project provides for construction of a large outfall sewer along the west side of the Des Moines River from 3rd Street and Watson Powell Drive to south of Elm Street and along the east side of the Des Moines River from Raccoon Street to the south side of Scott Avenue This will help to meet the nine minimum requirements in the




Justification:

Scheduling:Stage 1: Design-F04, Construction F04/05. Stage 2: Design-F05, Construction-F06/09.Main Outfall Design: F08/09, Construction of six segments F10/13.


This project is included in the WRA Facility Plan Update. From the 2004B and 2006 bond issue proceeds, $3,600,000 have been reallocated to Flow Monitoring project WRA093.Operating Budget Effect:

This project is included in the long term control plan presented to the IDNR.

None.

and along the east side of the Des Moines River from Raccoon Street to the south side of Scott Avenue. This will help to meet the nine minimum requirements in the current NPDES permit.

The Main Outfall project will begin at the newly constructed DM River Outfall sewer siphon structure and proceed east/southeasterly across the DM River and will continue in a southereasterly direction. It will replact the existing Main Outfall terminating upstream of the WRF at a proposed CSSSFacility (see WRA087).

WRA Flow


Combined Sewer Solids Separation Facility Phase 17AG267

WRA990000 WRA087




Expenses 52,316,995 2,181,473 2,333,570 4,515,043 13,910,331 18,425,374 18,298,880 10,832,224 4,760,517

Beginning Balance (365,043) 30,389,626 12,372,741 4,760,517Interest Earnings 1,995 1,995Repair and Replacement Fund

Communities

Future Funding 3,220,000 3,220,000Bond Proceeds 1,080,000 550,000 550,000 250,000 800,000 280,000SRF Drawdowns 48,015,000 3,600,000 3,600,000 44,415,000 48,015,000Other

Total Resources 52,316,995 4,150,000 4,150,000 44,299,957 48,815,000 30,671,621 15,592,741 4,760,517ENDING BALANCE 0 1,968,527 (2,333,570) (365,043) 30,389,626 30,389,626 12,372,741 4,760,517 0 0 0 0 0

Description: Core Project.This project provides for solids separation of wet weather combined sewer flow at the Wastewater Reclamation Facility Flow will be discharged to the Des Moines River after primary




Justification:

Scheduling:



Design-F08 through F10, Construction F10 through F13.

This project provides for solids separation of wet weather combined sewer flow at the Wastewater Reclamation Facility. Flow will be discharged to the Des Moines River after primary treatment and disinfection.

This project is included in the long term control plan presented to the IDNR and will be required to meet the nine minimum requirements in the long term control plan.

This project is included in the WRA Facility Plan Update.

WRA Flow


Ingersoll Run Combined Sewer Overflow Phase 25AG267

WRA990000 WRA088




Expenses 2,707,069 2,445,476 120,456 2,565,932 126,137 2,692,069 15,000

Beginning Balance 241,137 15,000Interest Earnings


Communities

Future Funding

Bond Proceeds 2,707,069 2,807,069 2,807,069 (100,000) 2,707,069SRF Drawdowns

Other

Total Resources 2,707,069 2,807,069 2,807,069 141,137 2,707,069 15,000ENDING BALANCE 0 361,593 (120,456) 241,137 15,000 15,000 0 0 0 0 0 0 0

Description: Core Project.Thi j t id f th l ti f bi d fl i th 2100 bl k f Hi h St t i th I ll R C bi d S S t Thi ill id d t




Justification:

Scheduling:


This project is included in the WRA Facility Plan Update.Operating Budget Effect:None.

This project provides for the relocation of a combined sewer overflow in the 2100 block of High Street in the Ingersoll Run Combined Sewer System. This will provide adequate sewer capacity in this reach of the combined sewer system to eventually eliminate the combined sewer overflow in the area of Eighth Street and Keo Way to help meet the minimum requirements included in the current NPDES permit.

Needed to conform to NPDES requirements.

Design-F06/F07, Construction-F07/F08, project being held open through F11.

WRA Flow


Little Four Mile Interceptor Extension Phase 15AG267

WRA990000 WRA089




Expenses 2,720,978 2,717,478 3,500 2,720,978 2,720,978

Beginning Balance

Interest Earnings 7,764 7,764 7,764 7,764Repair and Replacement Fund

Communities

Future Funding

Bond Proceeds 2,713,214 3,688,214 (975,000) 2,713,214 2,713,214SRF Drawdowns

Other

Total Resources 2,720,978 3,688,214 (967,236) 2,720,978 2,720,978ENDING BALANCE 0 970,736 (970,736) 0 0 0 0 0 0 0 0 0 0





This project will provide service to the Altoona Wastewater Treatment Plant. The project starts at the Little Four Mile Interceptor east of highway 65 and North of 27th Avenue and continues to the Altoona Wastewater Treatment Plant.

Justification:

Scheduling:

Design:F05, Construction:F06.Altoona Equalization Basin Modifications - F09


This project is included in the WRA Facility Plan Update. This project is complete. Remain bond funds will be re-allocated (see Dec 2010 resolutions) to other Expansion Projects.Operating Budget Effect:


This will provide the primary WRA connection for the City of Altoona.

Avenue and continues to the Altoona Wastewater Treatment Plant.

Expansion Flow


Middle Creek Trunk Sewer Extension Phase 20AG267

WRA990000 WRA090




Expenses 7,449,522 6,957,890 491,632 7,449,522 7,449,522

Beginning Balance 956,201Interest Earnings


Communities

Future Funding

Bond Proceeds 4,769,817 5,726,018 5,726,018 (956,201) 4,769,817SRF Drawdowns 2,679,705 2,679,705 2,679,705 2,679,705Other

Total Resources 7,449,522 8,405,723 8,405,723 7,449,522ENDING BALANCE 0 1,447,833 (491,632) 956,201 0 0 0 0 0 0 0 0 0

Description: Expansion project.




Segment 1:This project extends service from the existing Southern Tier Interceptor east of Highway 28 to 50th Street in Norwalk.

Justification:This project will increase the service area for Norwalk, Cumming, and West Des Moines.

Scheduling:


This project is included in the WRA Facility Plan Update.

Operating Budget Effect:Revenues and operations and maintenance costs will increase.

Segment 1: Design, F05. Construction, F06/F07.

Segment 2: Design F07(28E). Construction, F08/F09.

Segment 2/3: Extends WRA service west to the cities of Cumming and West Des Moines.

Expansion Flow


West Des Moines Outfall Extension Phase 18AG267

WRA990000 WRA092




Expenses 10,998,042 6,752,040 15,742 6,767,782 1,285,074 8,052,856 2,945,186

Beginning Balance 247,967 2,945,186Interest Earnings 88,589 66,296 66,296 22,293 88,589Repair and Replacement Fund

Communities

Future Funding

Bond Proceeds 8,285,953 4,325,953 4,325,953 3,960,000 8,285,953SRF Drawdowns 2,623,500 2,623,500 2,623,500 2,623,500Other

Total Resources 10,998,042 7,015,749 7,015,749 4,230,260 10,998,042 2,945,186ENDING BALANCE 0 263,709 (15,742) 247,967 2,945,186 2,945,186 0 0 0 0 0 0 0

Description: Expansion Project. Thi j t ill i th i d it f th W t D M i O tf ll




This project will increase the service area and capacity of the West Des Moines Outfall.Segment 1-South 60th Street to South 74th Street. Segment 2- South 74th Street to Sugar Creek.Segment 3 -Sugar Creek to Boonevill Road. Segment 4 -Booneville Road to Mills Civic Parkway.Segment 5 -Mills Civic Parkway to I-80

This project was done as Expedited project.Justification:

Scheduling:Segment 1: Design-F05, Construction-F06/F07. Segment 2,3,4: Design-F07. Segment 2: Construction-F07. Segment 3: Construction-F07. Segment 4: Construction F07/F08.Segment 5: Design-F07.F08, Construction F08/F09.Relationship to General Plan and Other Projects:This project is included in the WRA Facility Plan Update.Operating Budget Effect:Revenues and operations and maintenance costs will increase as flows increase.

This project will provide service to the cities of West Des Moines and Waukee.

Expansion Flow


ACCOUNT

WRA Flow Monitoring System ImprovementsAG267

WRA990000 WRA093



Expenses 5,946,782 1,940,731 3,063,781 5,004,512 540,461 5,544,973 277,862 91,997 31,950

Beginning Balance 619,952 329,491 123,947 31,950Interest Earnings 72,318 72,318Repair and Replacement FundCommunitiesFuture FundingBond Proceeds (reallocated) 5,874,464 1,511,945 4,112,519 5,624,464 250,000 5,874,464SRF DrawdownsOther

Total Resources 5,946,782 1,511,945 4,112,519 5,624,464 869,952 5,874,464 401,809 123,947 31,950

ENDING BALANCE 0 (428,786) 1,048,738 619,952 329,491 329,491 123,947 31,950 0 0 0 0 0

Description: Core Project. This project will upgrade the existing system and implement new meters for flow metering and real time operational control. Flow meters will be used for flow allocation to communities and for operating the collection system during wet weather events.




Justification:

Scheduling:Design in F08/09, Replacement to begin in F09 and continue through F10. Installation continues through F13 as interceptor sewers are completed.



None.

Existing flow monitors will be in operation for fifteen years when replaced. New meters will be required as existing meters are not supported by the manufacturer.

This project is included in the WRA Facility Plan Update. Real time flow information will be required to operate the Southwest Outfall Diversion Facilities

WRA Flow


WRA Transition CostsAG267

WRA990000 WRA096




Expenses 440,000 249,125 1,979 251,104 188,896 440,000

Beginning Balance 188,896Interest Earnings 10,000 8,034 1,966 10,000 10,000Repair and Replacement Fund

Communities 430,000 430,000 430,000 430,000Future Funding

Bond Proceeds

SRF Drawdowns

Other

Total Resources 440,000 438,034 1,966 440,000 188,896 440,000ENDING BALANCE 0 188,909 (13) 188,896 0 0 0 0 0 0 0 0 0

Description: Core Project




Description: Core Project.

Justification:

Scheduling:



F05: Transfer of easements and WRF property. F06/F07/F08: Grant easement in public rights of way.

Costs associated with property transfer to the Wastewater Reclamation Authority. These include all costs associated with transferring deeds, easements to the WRA and creating easements necessitated by the legal status change on July 1, 2004.

The legal status of the WRA changed on July 1, 2004. The new status allows the WRA to own property. All past property interests held through the City of Des Moines and other communities must be transferred to the WRA.

WRA Flow


Four Mile Interceptor Improvements Phase 23AG267

WRA990000 WRA097




Expenses 29,081,865 5,923,663 9,597,791 15,521,454 10,890,011 26,411,465 2,632,977 37,423

Beginning Balance 3,485,411 720,400 37,423Interest Earnings


Communities

Future Funding 1,000,000 1,000,000Bond Proceeds 2,976,283 1,026,283 300,000 1,326,283 700,000 2,026,283 950,000SRF Drawdowns 23,463,000 9,108,000 6,930,000 16,038,000 7,425,000 23,463,000Other / CORE buy in collected 1,642,582 1,642,582 1,642,582 1,642,582Total Resources 29,081,865 10,134,283 8,872,582 19,006,865 11,610,411 27,131,865 2,670,400 37,423

ENDING BALANCE 0 4,210,620 (725,209) 3,485,411 720,400 720,400 37,423 0 0 0 0 0 0

Description: Expansion Project.Construction of a 72" sanitary sewer from the WRF to NE Broadway Avenue.

Segment 1: WRF to Scott Avenue. Segment 2: Scott Ave. to University Ave.




Segment 3: University Avenue to Easton Blvd. Segment 4: Easton Boulevard to Hubbell Ave.

Segment 5: Hubbell Avenue to NE Broadway Avenue.

Justification:

Scheduling:



This project will convey flow from Ankeny and Altoona to the WRF.

Segment 1: Design-F08, Construction-F09/F10. Segment 2&3: Design-F08/F09, Construction-F10. Segment 4&5: Design-F09, Construction F10/F11.


This project is included in the WRA Facility Plan Update and must be completed prior to completion of the Four Mile Interceptor Extension (Phase 24).

Expansion Flow


Mud Creek Interceptor P 19AG267

WRA990000 WRA099




Expenses 19,422,436 87,000 87,000 7,151,664 8,485,152 3,698,620

Beginning Balance (57,000) 11,683,772 3,198,620Interest Earnings


Communities

Future Funding 500,000 500,000Bond Proceeds 30,000 30,000 30,000SRF Drawdowns 17,892,436 17,892,436Other, Altoona 1,000,000 1,000,000Total Resources 19,422,436 30,000 30,000 18,835,436 11,683,772 3,698,620

ENDING BALANCE 0 0 0 0 (57,000) (57,000) 11,683,772 3,198,620 0 0 0 0 0






City of Altoona will provide funding to start the project

Justification:

Scheduling:

Relationship to General Plan and Other Projects:This project is included in the WRA Facility Plan Update. 28E bond schedule was March 2012. Construction in early FY13.Operating Budget Effect:Revenues and expenses will increase as flows increase.

Phase 1: Design-F08 started under 28E expedite, Construction-F13/14.

Required to provide capacity for the Mud Creek area in Altoona and as an outlet for Bondurant.

This project will provide service to the Mud Creek area in Altoona and serve as the Bondurant connection to the WRA system.

Expansion Flow


WRA Corridor PreservationAG267

WRA990000 WRA100




Expenses 400,000 22,275 58,934 81,209 168,791 250,000 100,000 50,000

Beginning Balance 316,066 147,275 50,000Interest Earnings


Communities 22,275 22,275Future Funding 2,725 2,725Bond Proceeds 375,000 375,000 375,000 375,000SRF Drawdowns

Other / Small CIP 22,275 22,275 22,275 (22,275)Total Resources 400,000 22,275 375,000 397,275 316,066 397,275 150,000 50,000

ENDING BALANCE 0 0 316,066 316,066 147,275 147,275 50,000 0 0 0 0 0 0





Funds collected for Small CIP will be temporarily used to purchase easements and/or land needed to preserve right-of-way for future sewer projects that are scheduled in the facility plan in a future bond issue with construction after F09.

Justification:

Scheduling:



Reimbursement from bonded project will be needed for any advance use of funds under this project number.

Land acquisition in advance of projects will be required to reduce future costs and provide corridor preservation.

Expansion Flow


ACCOUNT

WRA Southern Tier Improvements (funded with Future Expansion Debt)AG267

WRA990000 WRA103 b



Expenses 10,373,430 10,373,430

Beginning BalanceInterest EarningsRepair and Replacement FundCommunitiesFuture Funding 10,373,430 10,373,430Bond ProceedsSRF DrawdownsOther

Total Resources 10,373,430 10,373,430

ENDING BALANCE 0 0 0 0 0 0 0 0 0 0 0 0 0





This project will increase the capacity of the Southern Tier Interceptor. Improvements in F10 will increase the high lift capacity of the pump station and provide a pump station at the AreaC equalization facility.

Justification:

Scheduling:



This project is included in the WRA Facility Plan Update and Ex31 March 2018 & March 2020.

This project is scheduled to begin F18. The improvements at the Southern Tier Pump Station and pipe line p have been moved from FY19 to FY12 in order to accommodate the flow from the SWADF scheduled to be online in FY13.

Expansion Flow


ACCOUNT

WRA Southern Tier Improvements for SW Area DiversionAG267

WRA990000 WRA103 a



Expenses 12,710,400 1,059 1,059 1,738,641 1,739,700 6,528,600 4,442,100

Beginning Balance (1,059) (1,689,700) (3,562,300)Interest EarningsRepair and Replacement FundCommunitiesFuture Funding 1,500,000 1,500,000Bond Proceeds 350,000 50,000 50,000 300,000SRF Drawdowns 10,860,400 4,356,000 6,504,400Other

Total Resources 12,710,400 48,941 50,000 2,966,300 4,442,100

ENDING BALANCE 0 0 (1,059) (1,059) (1,689,700) (1,689,700) (3,562,300) 0 0 0 0 0 0





This project will increase the capacity of the Southern Tier Interceptor. F12 improvements will increase the pipe line capacity from the Souther Tier pump station to the Area C equalization basin.

Justification:

Scheduling:



This project is included in the WRA Facility Plan Update as an Expansion project but is now categorized as part of the SW Area Diversion Faciltiy (SWADF).

This project has been re-scheduled to begin F11 from F19.

Expansion Flow


ACCOUNT

WRA Equalization Basin ImprovementsAG267

WRA990000 WRA104



Expenses 1,336,450 4,603 4,603 1,020,260 1,024,863 311,587

Beginning Balance 25,397 5,137 5,137 5,137Interest EarningsRepair and Replacement FundCommunities 530,000 30,000 30,000 500,000 530,000Future Funding 306,450 306,450Bond ProceedsSRF Drawdowns 500,000 500,000 500,000Other, Commty 098 /Grant

Total Resources 1,336,450 30,000 30,000 1,025,397 1,030,000 5,137 5,137 311,587

ENDING BALANCE 0 0 25,397 25,397 5,137 5,137 5,137 5,137 0 0 0 0 0

Description:




Improvements/Modifications/Abandonment of existing WRA equalization basins.

Justification:

Scheduling:


These improvements will be funded from I-Jobs Grant $500,000 with SRF funding to match and/or cover remaining eligible cost and R&R community collection to start project.


Improvements in AreaC: F11/12

Abandonment of Highland Hills: F14

Improvements in Beaver Creek: F11/12

An equalization utilization study was done in F09 indicating a benefit to WRA conveyance system would be achieved by utilizing Beaver Creek and Area C equalization basins.

WRA Flow


ACCOUNT

WRA Westside Supplemental Equalization Basin Phase 5 segment 5AG267

WRA990000 WRA102



Expenses 17,200,000 1,200,000 8,000,000 8,000,000

Beginning Balance 7,000,000 (1,000,000) (1,000,000) (1,000,000)Interest EarningsRepair and Replacement FundCommunitiesFuture Funding 16,200,000 1,200,000 15,000,000Bond ProceedsSRF DrawdownsOther, SALE of Equip

Total Resources 16,200,000 1,200,000 15,000,000 7,000,000 (1,000,000) (1,000,000) (1,000,000)

ENDING BALANCE (1,000,000) 0 0 0 0 0 0 7,000,000 (1,000,000) (1,000,000) (1,000,000) (1,000,000) 0

Description:




A supplemental equalization basin will be constructed near the current Westside Basin to handle additional flows from the western area of WRA's conveyance system.

Justification:

Scheduling:


These improvements are not in the 2004 Facility Update.

Study and Design can be funded from an SRF P&D loan. IUP is on file


This project will be needed to reduce the load from the western area on the conveyance system.

Study: F10, Design: F11, Construction to begin in F12.

WRA Flow


ACCOUNT

WRA Saylor Equalization Basin - additional basin in the northAG267

WRA990000 WRA101



Expenses 10,200,000 200,000 5,000,000 5,000,000

Beginning Balance 5,000,000Interest EarningsRepair and Replacement FundCommunitiesFuture Funding 10,200,000 200,000 10,000,000Bond ProceedsSRF DrawdownsOther

Total Resources 10,200,000 200,000 10,000,000 5,000,000

ENDING BALANCE 0 0 0 0 0 0 0 0 5,000,000 0 0 0 0

Description:




An additional equalization basin will be needed in the north to handle additional development and growth in the Saylor Creek Interceptor service area which includes a portion of

Polk County, Ankeny and all of Polk City when connected.

Justification:

Scheduling:


These improvements are not in the 2004 Facility Update.

Study and Design can be funded from an SRF P&D loan if other funding is not available.


This project will be needed to reduce surcharges on the conveyance system.

Study: F10/10, Design: F11/12, Construction to begin in F13.

y, y y

WRA Flow


ACCOUNT

WRF Nutrient Removal P 1AG267

WRA990000 WRAXXX



Expenses 33,338,242 33,338,242


Total Resources 33,338,242 33,338,242

ENDING BALANCE 0 0 0 0 0 0 0 0 0 0 0 0 0





This project will involve removal of nutrients from the effluent as required by federal and state regulations.

Justification:

Scheduling:



As required by federal and state regulations. This project is scheduled for F20.

Operating and maintenance costs will increase with implementation of the facilities.

This project is included in the WRA Facility Plan Update. 28E bond schedule was March 2012 but this Project has been pushed back to 2020.

This project will be required to comply with federal regulations that limit the levels of nutrients(ammonia and phosphorous) in publicly owned treatment works effluent.

WRA Flow


ACCOUNT

WRA Common TrunkAG267

WRA990000 WRAXXX



Expenses 9,262,840 9,262,840


Total Resources 9,262,840 9,262,840

ENDING BALANCE 0 0 0 0 0 0 0 0 0 0 0 0 0





This project will increase the capacity of the WRA common trunk.

Justification:

Scheduling:



This project is scheduled for F20.

This project is included in the WRA Facility Plan Update and Ex31 March 2018.

Expansion Flow


ACCOUNT

WRA Clive / USSD Joint TrunkAG267

WRA990000 WRAXXX



Expenses 15,566,131 15,566,131


Total Resources 15,566,131 15,566,131

ENDING BALANCE 0 0 0 0 0 0 0 0 0 0 0 0 0





This project will increase the capacity of the Clive/USSD joint trunk.

Justification:

Scheduling:




This project is included in the WRA Facility Plan Update and Ex31March 2020.

Expansion Flow


ACCOUNT

WRA Birdland Pump StationAG267

WRA990000 WRAXXX



Expenses 8,192,700 8,192,700


Total Resources 8,192,700 8,192,700

ENDING BALANCE 0 0 0 0 0 0 0 0 0 0 0 0 0





This project will eliminate the overflow at the birdland pump station. A feasibility study will need to be done in F18/F19.

Justification:

Scheduling:




This project is included in the WRA Facility Plan Update and Ex31 March 2020.

WRA Flow

2010 WRA Community Population for Population Weighted Voting

Altoona 13,301 1 13,301 3.246% 3.25%Ankeny 36,161 2 18,080.5 4.412% 8.82%Bondurant 2,952 1 2,952 0.720% 0.72%Clive 14,125 1 14,125 3.447% 3.45%Cumming 162 1 162 0.040% 0.04%Des Moines 198,682 3 66,227 16.161% 48.48%Johnston 13,596 1 13,596 3.318% 3.32%Norwalk 8,229 1 8,229 2.008% 2.01%Pleasant Hill 6,961 1 6,961 1.699% 1.70%West Des Moines 51,744 3 17,248 4.209% 12.63%Waukee 8,132 1 8,132 1.984% 1.98%Polk City 2,872 1 2,872 0.701% 0.70%Polk County 10,517 1 10,517 2.566% 2.57%Warren County (Non-voting Member) 0 0 0 0.000% 0.00%Greenfield Plaza/ Hills of Coventry Sanitary District 1,743 1 1,743 0.425% 0.43%Urbandale Sanitary Sewer District 32,168 2 16,084 3.925% 7.85%Urbandale-Windsor Heights Sanitary District 8,455 1 8,455 2.063% 2.06%Total 409,800 22 na na 100.00%

Community Percentage of Total

WRA Population

Community Population

Voting WRA Board

Representatives

Population per Board Representative

Percentage of Total WRA Population per

Voting Representative

sthutchens

Text Box

Item 6

Item 7

Memorandum February 8, 2011 To: WRA Technical Committee From: Scott Hutchens Re: WRF Building 91, 92, & 96 HVAC Improvements This improvement includes air handling unit cooling controls modifications, humidifier replacement, exhaust-fan variable frequency drive addition, variable air volume (VAV) box modifications, and associated instrumentation and controls work. The improvement also includes electrical, plumbing, and painting, along with related subsidiary and incidental work. In recent years the usage of space in the laboratory (Building 96) has changed. Rooms that were designed with specific intentions are no longer being used as designed (the original lunch/conference room is now an office space, a lab space is now a lunch room and another is an office space, etc.) and the heating, ventilation, and air conditioning system demands have changed. Occupants have complained about the comforts of the existing HVAC system and modifications to the system to provide the level of comfort needed are required. The modifications include:

• A new humidification system due to the fact that the existing humidifier is only capable of providing half of the required capacity during peak conditions.

• Exhaust duct work modifications • Removing the pneumatic controls from the existing VAV boxes and installing

direct digital control (DDC) for optimum capacity and energy consumption control

The Administration Building and the Maintenance Building (Buildings 91 and 92) will also have the same modifications to the existing VAV boxes as Building 96 (removal of the pneumatic controls and installation of DDC). A sole source purchase order to Johnson Controls was approved by the WRA Board at the January 18, 2011 meeting to have them provide programming, Graphics/Operator Interface, and software to allow control of Building 91, 92, & 96 from a main workstation. The engineer’s estimate for this project is $110,000 and bids will be taken on Tuesday, March 8, 2011. The bids will be presented at the March 8, 2011 WRA Technical Committee meeting for review and recommendation to the WRA Board for consideration at its March 15, 2011 meeting. Construction on this project should be completed by July 31, 2011.

Item 8

Memorandum February 8, 2011 To: WRA Technical Committee From: Scott Hutchens Re: WRF Preliminary Treatment Building Barscreen Replacement This improvement includes the removal and replacement of two mechanical barscreens located in the Preliminary Treatment Building at the WRF along with associated electrical work, and instrumentation and controls. The barscreens are critical pieces of equipment that protect the main influent pumps and other equipment along the wastewater treatment process, and it is imperative that the equipment is functional during high flow events so flow is not backed up throughout the system. Over the past few years, WRF Maintenance Staff has noted higher maintenance costs and more frequent maintenance issues associated with the existing barscreens, and since the costs of maintaining the existing barscreens are rising and issues are becoming more frequent, it was determined that replacement of the barscreens is in the WRA’s best interest. Funding for the replacement of the two screens has been allocated in the 2011 Fiscal Year budget, and the replacement of the other three screens will be completed in the coming fiscal years. The screens that are being specified are the same screens that were specified for the installation in the Combined Sewer Solids Separation Facility. This will allow the WRA to standardize on a single screen manufacturer for all of the screens inside of the WRF and should help minimize the maintenance and operational issues that could arise with multiple barscreens from multiple manufacturers. The engineer’s estimate for this project is $1,115,000 and bids will be taken on Tuesday, April 5, 2011. The bids will be presented at the April 12, 2011 WRA Technical Committee meeting for review and recommendation to the WRA Board for consideration at its April 19, 2011 meeting. Construction on this project should be completed by December 31, 2011.

Item 9

Memorandum February 8, 2011 To: WRA Technical Committee From: Scott Hutchens Re: OSA (Office of State Archaeologist) Supplemental Agreement No. 2 to perform Archaeological Data Recovery Plan (DRP) Part II: Block Shovel Skimming & Mechanical Scraping, Geoarchaeology, and Educational Outreach at Site 13PK966 at the CSSSF Site in the Amount of $616,966 - Recommendation Previously, OSA has requested an amendment to their original agreement with the unanticipated discovery of archeological properties during stripping and excavation activities at the CSSSF site. During the work performed under OSA’s Supplemental Agreement No.1, which included exploratory trench work and recovery of artifacts to determine the size of the archaeological site, the SHPO (State Historical Preservation Office) and IDNR determined, with OSA’s recommendation, that a more extensive DRP needs to be implemented. This DRP includes detailed investigation and artifact recovery in an area of 3,000 square meters with four areas divided into 10 meter by 10 meter blocks to be hand skimmed to retrieve and document artifacts discovered. The remaining area will be divided into 5 meter by 5 meter blocks to be mechanically excavated while OSA monitors. OSA has approximated that it will take 6 to 8 full time archaeologists four months to perform the work necessary to implement the DRP, and once this work is completed the site will be cleared and the contractor can continue excavating the CSSSF site with monitoring. The original agreement with OSA included both monitoring and investigation components and the fee for this investigative work was for an amount not to exceed $89,871.00. This agreement still contains funding for monitoring of the deep excavation of the CSSSF main structure and retention treatment basins as well as the monitoring required for the WRA Main Outfall, Phase 17, Segment 1C project. The first supplemental agreement for the initial trenching and data recovery with OSA had a fee not to exceed $98,359.00. At this time, about half of this fee has been spent with some additional trenching expected at the north side of the site. Attached is the amended DRP as well as the detailed scope of services with a map showing the block grids to be shovel skimmed and mechanically scraped. The amendment OSA is requesting is a not to exceed amount inclusive of all field, reporting, travel, and indirect cost associated with the Data Recovery Plan Part II in the amount of $616,966.

February 1, 2011 GCP Project No. FY11P059/ 180207 02 Supplement Wastewater Reclamation Authority Attn. Scott Hutchens 3000 Vandalia Road Des Moines, IA 50317 via e-mail as .pdf attachements to [email protected] Re: Scope—Archaeological Data Recovery Part II: Block Shovel Skimming and Mechanical Scraping, Geoarchaeology, and Educational Outreach at Site 13PK966, for WRA Combined Sewer Solids Separation Facility, Polk County, Iowa Activity ID 01-2011-006 Dear Mr. Hutchens:

In response to the request from the Wastewater Reclamation Authority (WRA) the OSA has prepared a proposal for the WRA Combined Sewer Solids Separation Facility for the initial Data Recovery Plan (DRP), OSA CCR 1823 (R&C 091177111), and as amended (letter amendment dated January 21, 2011). Both CCR 1823, the initial DRP (which also includes the trenching work initiated in December 2010), and the amendment (letter of January 21, 2011) were approved by the Iowa SHPO (email dated January 24, 2011) and DNR (email dated January 24, 2011). As detailed below, and extrapolated from CCR 1823, as amended (January 21, 2011), the DRP offers a mix of field strategies to address both intra- and community-wide occupation patterns within the project area based on the results of the trenching program. The amended DRP also takes into account logistical challenges posed by the site, data not available at the time CCR 1823 was submitted, the construction schedule, and a winter field season. The work plan as outlined below, based on currently available data, is scheduled for a four month timeline for fieldwork and an additional six months for analysis and reporting. Since January 21, 2011 (via email request from Scott Hutchens), OSA has been finalizing crew, equipment, and coordinating logistics with WRA and its construction partners to move into the second phase of the DRP. The OSA projected a field start date of February 1, 2011 with completion of field work projected for the end of May, 2011. Due to inclement weather, OSA was forced to delay the fieldwork state date until the second week of February 2011, weather permitting.

The proposed research involves two distinct but complementary archaeological field strategies. The OSA agreed with IA SHPO’s observation that artifact distributional analyses are critical to the interpretation of the site. Distributional data from both artifacts and features will be vital, as both data sources are necessary to ascertain the contexts of distributions at two interpretive scales at 13PK966: (1) broad-scale, community-wide and (2) fine-scale intra-community. Paleoenvironmental and depositional information pertaining to the landform is also critical to the interpretation of distributional data as it relates to site structure, community plans and activity loci, and depositional processes. Feature clusters (including but not limited to hearths, pits, rock concentrations) will be important anchors for sampling and interpreting fine-scale (i.e., artifactual) distributional data. Based on current information, we now estimate the site to cover 3,000 m2 and expect as many as 300 features may be documented by the data recovery investigation.

Assuming the aforementioned data categories can be reasonably recovered, OSA proposes to rely on both ethnographic and archaeological models to address substantive research questions concerning the relation of mobility scale to site structure and economic activities (CCR 1823). OSA also expects this project will result in methodological contributions regarding field strategies that rigorously interpret spatial patterning at Archaic sites situated within floodplains of major drainages. While the site matrix supports an assumption of minimal loss of spatial resolution from depositional or post-depositional processes (minimal horizontal or vertical displacement of artifacts or features), those same matrix characteristics pose very challenging logistic complications to data recovery. Fine Scale, Intra-Community Patterns

To date, exploratory trenching, scraping and mapping have yielded information about chronology, landform, and distributional data for artifacts and features. The distributional data suggests that features, hearths, and artifact scatters are clustered on slight rises or ridges on a point bar on the Archaic period floodplain. The feature and artifact clusters are vertically stratified into what may prove to be minimally four occupational episodes. The trenching data have provided us

OSA WRA Combined Sewer Solids Separation Facility – 13PK966 DRP, Part II: Block Scraping and Shovel Skimming, Geoarchaeology, and Educational Outreach Programs

with information on landforms, paleo-environment, identified multiple occupational loci relative to apparent landform features; and determined a Middle Archaic chronological placement for one of the occupational components. The kinds of questions posed in this research require understanding chronological, activity, and spatial variation of the different phases of occupation at 13PK966. Fine-scale, intra-community information will be obtained through a combination of shovel and trowel scraping in order to map features and artifacts (distributional data) and the collection of artifact density control samples, the latter an important methodological refinement of previous data recovery excavations in Iowa. The distributional data and controls will yield maps of artifact and feature distributions to aid in the definition and interpretation of intra-community plans. Using a systematic grid of 10-x-10-m blocks for overall provenience control, we will hand shovel skim and trowel 5-x-5-m blocks that will cover maximal target areas of up to 200 m2, deemed necessary to identify intra-community patterns in architecture, feature, and artifact scatters. The areas selected for shovel-trowel skimming will be anchored to feature and hearth loci identified by mechanical scraping. We will map the locations of artifacts and features with a total station that will provide point data accuracy for distributional mapping. Between 300 m2 and 600 m2, yielding a 10% to 20% sample of the estimated core area of site 13PK966, will be shovel skimmed in this way. In order to evaluate the accuracy of the point data to be used for pattern recognition, representative artifact density control column samples will be excavated. The volume of excavated deposits will be measured to permit calculations of densities of materials to compare with the frequency of artifact and feature data recovered using the shovel skimming technique. Density control data will be collected in 0.5-x-0.5-m columns (also referred to as shovel test quadrants) across a 1% sample of each shovel skimmed 100 m2 area, the equivalent of four quadrants per each 10-x-10-m block. Deposits will be removed in 5-cm increments and processed through either dry or water screens using ¼-inch mesh screen. Features will be mapped and bisected. Fill will be removed stratigraphically. In the case of very large features (house basins, sheet refuse patches), an appropriate grid will be used to maintain horizontal and vertical control. Feature deposits will be float processed in their entirety unless they are very large, in which case representative samples will be take for float processing and remaining deposits will be water or dry screened through ¼-inch mesh screen. Microstratigraphic data will be collected from a sample of features with potential to provide information on depositional and post-depositional environments that may inform on site structure, duration of occupation, and environmental dynamics and their potential effects or constraints on human habitation. Based on the above plan and sampling size, the OSA estimates that shovel skimming 400 m2, with average thickness of cultural deposits estimated to be 0.50 cm (200m3) will require a crew of 5 archaeologists for three months, including time for mapping and feature excavation. This estimate is based on the assumption that one person can shovel skim 1m3 of clay-rich matrix per day. If minimal feature excavation and mapping are required due to sparseness of resources then this task can be completed in a shorter time frame. Broad Scale, Community-Wide Patterns To obtain a representative sample of occupations across the landform in question, to ascertain the contexts of distributions, and potentially target habitation or activity loci with high potential to recover data on intra-community patterns, we will use a mechanical scraping technique. Non-culture-bearing deposits will be mechanically removed, and the fresh surface hand scraped smooth with shovels allowing features and artifacts to be mapped if present. In this way it is possible to recover broad community-wide plans through a realistic investment of time and labor. Mechanical scraping will be done in 5-x-5-m units, for an estimated (minimal) 50 units or 1,250 m2 yielding a 41% sample of the estimated undisturbed core area for site 13PK966. A systematic grid of 5-x-5-m blocks will be sampled using previously identified feature and hearth clusters as spatial anchors. In this way it will be possible to identify community-wide occupational variation and relate this variation to landform. An appropriately-sized, smooth-bucket backhoe will be used to systematically scrape each unit. After each pass the exposed surface will be hand scraped smooth and all identified features and artifacts will be mapped before scraping resumes. We will map the locations of artifacts and features with a total station, providing point data mapping accuracy. If it is apparent that an exposed surface has a high density of features and artifacts revealing maximum potential for intra-community patterning, mechanical scraping will cease and the fine-scale recovery methods discussed above will be implemented. If minimal potential is indicated, mechanical scraping will cease once the base of the lowest occupational horizon has been reached.


Features will be mapped and bisected. Fill will be removed stratigraphically. Feature deposits will be float processed in their entirety unless they are very large, in which case representative samples will be taken for float processing and remaining deposits will be either water or dry screened through ¼-inch mesh screen. Microstratigraphic data will be collected from a select sample of features with potential to provide information on depositional and post-depositional environments that may inform on site structure and duration of occupation. Based on the above plan and sample size, OSA estimates that mechanical scraping and mapping of 40 5-x-5-m blocks to average depths of 1.7 m will require a crew of 3 archaeologists for four months, including time for mapping and feature excavation. This estimate is based on the assumption that 15 m2 per day can be cleared. Information about the paleoenvironment, land-use, and depositional processes at 13PK966 is critical for this research, not only for local and regional modeling of land use by Archaic hunter-gatherers, but also to guide sampling for mapping at the broad community-wide scale. A representative sample of all potentially occupied landforms is needed for this research. In addition to the use of stratigraphic trenches, a systematic sample of solid soil cores will be removed in order to provide fine-scale data on site deposits necessary for identifying landforms, their depositional contexts, and to obtain microstratigraphic and paleoenvironmental data. Two related geoarchaeological field strategies are proposed. The first strategy involves systematic mapping the subsurface stratigraphy of 13PK966 using a 10-x-10-m grid. Based on the estimated undisturbed area of 13PK966 at 3000 m2 an estimated 50 cores will be required. Up to an additional 20 cores will be placed as required to improve resolution within the site and to capture information off-site for a broader geological context. It is expected that the target depth of the cores will be 3-meters, the depth deemed necessary in order to map base sediments that underlay the deepest occupational surface. The trench data suggest that the site is located on a landform characterized by sand ridges separated by silted-in swales bounded by clay-rich, abandoned channel fill. The systematic core data will be used to test the above interpretation and to identify areas that can be eliminated from mechanical scraping due to landform or depositional context. Using a geoprobe capable of extracting a 2-inch solid core, OSA estimates that this work will require a two-person team for one 5-day work week. The second proposed strategy involves stratigraphic mapping and recovery of soil and carbon samples to test for the effects of various depositional and post-depositional processes, including but not limited to flooding and burrowing, relevant to the geologic history of the site. Samples will be recovered from stratigraphic profiles that provide a comprehensive cross-section of the valley floor, solid soil cores, and microstratigraphic contexts from hearths, pit features, and house basin features, should they be recovered. This work will occur with on-site crews concurrently with the mechanical scraping, hand skimming, and feature excavations. Detailed Methods of Dissemination of Results to the Interested Public OSA proposes an “Archaeology in Action” program that will document—through video tape and still photography—the process of archaeology, the results of the investigation, and careers in archaeology. The edited video footage and photographs (created by OSA and Iowa Public Television [IPTV] staff), with descriptive text, will be incorporated into a project website and in upcoming interactive sessions with schools via the Iowa Communications Network and a partnership with IPTV. Video footage, photographs and descriptive text will form the basis for a new website about the project aimed at the general public and hosted by OSA. If feasible, live streaming video of the project will also be placed on the project website and on OSA’s Facebook feature. The website would be similar to other websites OSA has created for archaeological research projects in Iowa (see: http://www.uiowa.edu/~osa/research/index.html). For this project, the website would model the award-winning “Native American Sites in the City of Philadelphia” website: http://phillyarchaeology.org/more/nativeamerican/index.htm which similarly describes the unexpected archaeology resulting from construction in an urban landscape. Another website showing video of cultural resource management archaeology offers a second model http://www.illinoishistory.gov/PS/archaeology2.htm. Video footage from the project will also be used to prepare short (5 minute), web-based vignettes or “roll-outs” illustrating the process of archaeology. These would be used in conjunction with interviews of professionals explaining how archaeology is conducted in a cultural resources management setting. These would be featured on the Education Program page of OSA’s website: http://www.uiowa.edu/~osa/edu/edu.htm.


Over the years, OSA has facilitated face-to-face interaction between Iowa students and archaeologists via the Iowa Communications Network (ICN) as part of IPTV’s “Schools to Careers” programming. Recently interaction between IPTV and OSA resulted in a proposal to redesign these sessions. New video footage collected as part of the “Archaeology in Action” program at 13PK966 will allow OSA and IPTV to present recent and relevant information on a regional archaeological project as well as career mentoring and guidance. The short video clips from the project, augmented by still photographs, will be used to show students different aspects of archaeology. Personnel involved in the project (i.e., the archaeologists) also will be interviewed for these video segments. During the ICN sessions, one or more of these individuals will be available via the ICN to answer students’ questions. The exploration of what is left behind from a 6000 year-old site offers the opportunity to ask students “What will we leave behind?” and how what we leave will help define our society to later generations. One very important aspect of contemporary archaeology with applicability to many fields and of particular interest to high school students is the use of a Geographic Information System (GIS). OSA has previously proposed that a future Schools-to-Career session via IPTV be developed to demonstrate the applicability of GIS and archaeology. The current 13PK966 project offers such an opportunity as short video clips can illustrate the use of GIS. Via a future ICN session, students in a computer lab could interact with an archaeologist as he/she demonstrates the applicability of GIS to the current project. A bookmark commemorating Des Moines’ Birthplace Mural which includes an historic timeline of the Des Moines area was recently produced by the Polk County Historical Society with content input from OSA and from the Meskwaki Nation Historic Preservation Office. Copies of this bookmark along with a project “fact sheet” will be printed and distributed to local Des Moines area schools and other interested parties early on in the project. This will get the word out about the project and its outreach components (e.g., IPTV/ICN segments and OSA website). Operational Logistics and Proposed Start-up Timeline Implementing an archaeological excavation in winter in the Midwest at a large, complex Archaic period site does present a number of logistical challenges, as rightly pointed out in the Iowa SHPO review letter dated December 18, 2010. For this reason the flexibility clause in the DRP (CCR 1823) will be critical. OSA also agrees with the Iowa SHPO assertion that if, on account of weather conditions, it is found that the data recovery plan cannot be safely and faithfully executed then the effort must stop until operations can be resumed under safe and suitable field conditions. In order to implement the data recovery under adverse climatic conditions, the ground must not be frozen, and the excavations and field team must be protected from the elements, including extreme temperatures, precipitation, and wind. Currently, the trench excavations are using mobile, heated shelters to cover areas where investigations are occurring. Heat coils and blankets are being used to thaw the ground, so far with success. Excavated feature fill is being returned to OSA where it is being float processed. OSA and WRA are currently considering options of enclosing the site core area under one or more shelters that can potentially cover large areas of 13PK966. This option, however, may prove impractical. The use of large shelters can be costly, time consuming, difficult to heat and move, and anchoring shelters can potentially adversely impact the site. Another alternative is to use shelters of sufficient size to enclose 5-x-5-m or 10-x10-m grid squares with space for staging and processing, which can be more easily heated and moved. Stationary shelters will be used for staging areas, for on-site screening, and other uses as deemed necessary. A proposed start-up timeline for the fieldwork is as follows:

• Removal of trench backdirt piles and setting in a 10-x-10-m grid and established site datum’s as required. This work can begin immediately with target completion by late January or early February, weather permitting.

• Assembly of an easily moved and heated shelter to begin shovel skimming in targeted areas identified by previous trenching; geo-core sampling work concurrent with preparation of shovel skimming block. The geo-core work can be completed by mid-February, pending no major weather delays. We would like to have one structure in place and the ground thawed to begin shovel skimming no later than February 1.

• Once the geo-core sampling is complete, the 5-x-5 m block mechanical scraping program can begin. Preparing grid squares (ground thawing) for mechanical scraping can occur concurrently with the geo-core sampling. Scraping can begin the week of February 1 in select areas as long as this work does not interfere with the geo-core work tentatively planned for the second week in February, weather permitting.

OSA has been providing Iowa SHPO with regular progress letter reports. Progress letter reports will continue to be submitted on a weekly basis unless SHPO requests otherwise.


All materials will be returned to the OSA on a regular schedule while fieldwork is ongoing. At the OSA soils will be

water processed, and all artifacts will be washed, labeled, and catalogued. Artifact type, context, provenience, and recovery method data will be entered into relational databases, spread sheets, and GIS programs for artifact summary and data manipulation. The artifact catalogue database is the permanent inventory of cultural materials. Stone tools and debitage are classified into standard typological and functional categories for initial descriptive purposes and to facilitate technological analysis, use wear, and raw material identification. The chipped stone artifact categories follow Odell (1996) and Justice (1987). The historic artifacts recovered during this survey will be described using standard artifact categories established by the OSA. Specialized analyses of faunal, botanical, ceramic (if recovered) and lithic data will be undertaken by qualified professionals at the OSA and affiliated with other institutions. Flotation samples will be processed using a Dausman Model A Flote-Tech machine (Asch 1995). All light and heavy fractions are subjected to a scan identifying the major plant types, along with basic artifact catalog information.

Based on the above estimates, the anticipated cost to implement the second phase of the DRP, as approved by Iowa SHPO and DNR, is $616,966. This not-to-exceed cost is inclusive of all field, analysis, reporting, travel, and indirect costs associated with the work as outlined in this letter and in CCR 1823, as amended (January 21, 2011). A currently proposed estimate of $16,000 (split between supplements 1 and 2) for curation of the site collections is subject to revision once the total cubic feet of recovered material is known. The OSA website (http://www.uiowa.edu/~osa/fees/index.html) provides a list of fees for services for FY2011. The above cost does not include funds for a backhoe and operator. OSA understands that the backhoe and operator will be provided by consultants currently under contract with the WRA. Changes to the project plans, additional investigation beyond that specified here, or field conditions requiring adjustment to the anticipated scope as described above may require supplemental funding or may lower our cost; we will consult with you or a designated representative prior to exceeding the authorized cost or if we become aware of potential cost savings for the project. The proposal will supplement the existing agreement between OSA and WRA for data recovery Part I (Trenching). The begin date of September 1, 2010 and end date of December 31, 2010 will remain unchanged to accommodate Part II of the DRP as outlined in the current proposal.

All work conducted by the consultant will be consistent with the Guidelines for Archaeological Investigations in Iowa (1999), the Secretary of the Interior’s Standards and Guidelines for Identification and Evaluation (48 FR 44720-23) and the National Park Service publication The Archeological Survey: Methods and Uses (1978).

If the above scope fits your needs please indicate by signing in the space below and return this letter via FAX to 319-384-0768. Once the OSA has a notice-to-proceed, the existing agreement under Activity ID No. 01-2011-006 between WRA and the University of Iowa/OSA can be amended and supplemented based on the scope of work for the trenching phase of the data recovery plan for site 13PK966. If you have any questions about this proposal please do not hesitate to contact me at 319-384-0724 (cell at 319-400-9937) or at [email protected]. Sincerely, Approved for _____________________:________________________ (Client name) (Authorized signature)

Please include address:__________________________Date:________ (and printed name for invoicing purposes) Melody Pope, Ph.D. Contracts Director

Job CategoryFully Burdened

Rates

Salaried Staff:GCP Program Director $59.30

OSA Administrative Assistant $50.76

GCP Project Archaeologist/Historian $50.77

GCP Project Archaeologist $47.57

GCP Project Archaeologist $40.71

OSA Geomorphologist/GIS Specialist $55.43

OSA Network Administrator $54.09

OSA Lab and Repository Manager $48.86

OSA Librarian/Archivist $46.97

Hourly Staff:Paleoethnobotanist--project specific tbd

Faunal Analyst--project specific tbd

Architectural Historian--project specific tbd

Project Archaeologist--project specific $29.54

Assistant Project Archaeologist--project specific $24.62

GIS Technician--project specific $27.90

Crew Chief/Artifact Illustrator/Asst. Lab Manager--project specific $22.97

Field/Lab Technicians--project specific $19.69

1Task specific scopes and budgets will be prepared utilizing these rates and for other services as requested (e.g.,osteological analyses, NAGPRA or other tribal consultation, architectural or geoarchaeological studies, etc.).

2 The hours reflected above are provided for estimation purposes only. In accordance with the principles defined in OMB Circular A-21 The University of Iowa maintains documentation of effort worked for its professional and scientific staff on a percentage basis. In the event hourly employees are utilized for the project, hourly records are maintained for those employees

Rates Valid Thru June 30, 2011 (end of University fiscal year)

Contractor Fee Schedule1

The University of Iowa 2

Office of the State ArchaeologistGeneral Contracts Program

NO Names_GCP Rates_FY11.xls

Item 11

Memorandum February 8, 2011 To: WRA Technical Committee From: Scott Hutchens Re: Additional Consultant Costs at CSSSF as it relates to New Projected Flood

Elevations, Archaeology Investigation and Realignment of New Main Outfall - Information

The WRA Operating Contractor would like to inform the Technical Committee of possible additional Consultant Costs as it relates to the CSSSF, additional archaeological investigation, and revised flood elevations. The Operating Contractor has asked for a scope of services and fee for three items:

1. Additional work tasks and effort associated with the work performed by OSA (Office of State Archaeologists) as it relates to the ongoing archaeological excavation and investigation. This work has involved increased unforeseen work tasks such as coordinating trenching activities between OSA and the contractor, planning and coordinating work efforts done by the contractor to assist OSA. HDR also reviewed OSA documents, the Data Recovery Plans (DRP), OSA amendments and performed additional work associated with the DRP in order to keep the project moving forward.

2. Design & Construction Phase services for the work associated with eliminating the New Main Outfall 96” pipeline from underneath the existing main road at the WRF from Building 05 to Building 93. Working with Veenstra & Kimm, the Operating Contractor determined that there were substantial cost savings with utilizing the existing sewer in this corridor. Originally, the 96” sewer was to be installed between Building 05 and Building 93 and then the contractor for the CSSSF was to install gas, electric, potable and non-potable water, and biogas piping along the same alignment. Since there will no longer be a 96” sewer installed in the corridor, there are additional design and construction work associated with utility relocate coordination, design of roadway and increase in field construction management.

3. Design & Construction Phase services for the work associated with the revised Army Corps of Engineers (ACOE) flow frequency data for the Raccoon and Des Moines Rivers and the possible modifications to the CSSSF. The revised flow frequency data that was recently released from the ACOE may result in the revision to the 100-year and 500-year flood elevations. Modifications to the CSSSF to reflect the flood protection desired by the WRA may need to be made.

Item 11

The modifications may result in the redesign of the finished floor elevations of many of the structures associated with the CSSSF; however, at this time it has not been determined what protective measures will need to be implemented. The Operating Contractor is working with all of the consultants to gather further information necessary to make an informed decision.

HDR is currently formulating a scope of services and fee structure for each of the listed items. The Operating Contractor intends to present these costs to the Technical Committee and WRA Board at their respective meetings in March.

Item 12

Memorandum February 4, 2010 To: WRA Technical Committee From: Roxane Vaughan & Nick Carter Re: Recap of Flood Repairs 2010 - Information The WRA Director declared an operating emergency on June 28, 2010, for the Wastewater Reclamation Facility (WRF) and its conveyance system due to significant rainfall and increased release rates from the Saylorville Reservoir. The emergency was terminated on July 8, 2010. The raw influent flow at the WRF during the rainy days of June 13, 14, 15 averaged 229 mgd; the average flow just prior to the emergency days was 232 mgd. During the emergency days of June 29 to July 7 the average influent flow per day was 215 mgd. Average WRF flow for the 2010 calendar year was 98.8 mgd which is significantly higher than the 2009 average flow of 72.1 mgd. The high flows this past year caused damage to the conveyance system throughout the metro area. WRA staff has reviewed 12 damaged areas with FEMA representatives which will be included for 2010 reporting (see attached map). Also, the WRF experienced higher than normal power usage and additional chemicals used to treat the extra flows. The WRA is asking FEMA for reimbursement in the amount of $136,145 for these costs. WRA has not received a reimbursement like this in the past but 2010 was a unique year and WRA expects FEMA to consider the extra costs for reimbursement. The most costly repair is for damage to the recently installed sheet piling on the West Des Moines Outfall (Phase 13, segment 7) along the Raccoon River. In January, the WRA awarded a contract in the amount of $177,500 to Peterson Contractors for this repair. Potential FEMA funding for this project is listed at $127,861 with additional mitigation of $50,650. Damage from sewer surcharging or flooding also occurred at other sites. Repairs include manhole casting repairs, repair of collapsed pipe, restoration of riverbank and repair of a pump station access road. Additionally, four flow monitoring sites were damaged by flooding and surcharging. FEMA lists the total costs of these projects at $65,604. Work continues at three sites but has been completed at the other nine sites. The WRA is asking for reimbursement of $136,145 for additional costs at WRF and asking $193,465 for conveyance repairs and $50,650 for mitigation.

FF

F

F

F

F

FF

FF

F

FFF

F

FF

Raccoon River

Site #12West Des Moines Outfall, Phase 13, Segment 7

Outfall Sheetpile Repair ProjectFailed Sheetpile

Site #1MH SSV-055

Blown Casting

Site #3MH SSV-017

Blown Casting Site #2MH PHA-005

50' of Collapsed Pipe

Site #4MH SWM-064Blown MH Lid

Site #6Flow Meter FMT-2Flooded Control Cabinet

Site #5Flow Meter U-4Flooded Control Cabinet

Site #10Flow Meter UWH-1Flooded Control Cabinet

Site #7Flow Meter NWIDamaged Meter Bracket and Cable

Site #8MH NWH-065Erosion of Riverbank at MH

Site #9MH SWK-053Blown MH Lid

Site #11Southern Tier Pump StationBerm Eroded at Storage Cell

0 5,000 10,000 15,000 20,0002,500Feet

WRA Conveyance System - 2010 Flood DamageFEMA Site Locations

/

Item 13

Memorandum February 4, 2010 To: WRA Technical Committee From: Roxane Vaughan Re: Request for Information Our bond holders require WRA to have certain information updated and available each year. The average flow computations will be made available to and distributed in the bond disclosures. Additionally, WRA is required to present information about customers. WRA reviews the top twenty customers from City Des Moines (DM) sewer enterprise division along with WRF customers. I work with Larry Hare to prepare the list of WRA top ten users. I would like to have on file the top sewer user of each member community. Please review your water/sewer records and report back to Larry H and Roxane V your community or district’s top user. Additional user information is necessary for any customer in the metro system that used more than 25 million gallons during calendar 2010. DM’s information shows the following users with more than fifty million gallons:

1. Pine Ridge Farms 123,781,284 2. ADM Oil Refining 118,292,049 3. IA Methodist Hospital 83,796,944 4. AE Dairy 71,501,320

Our top 4-6 customers are easy to identify but the next 6-12 top users jockey for position each year. Please let Larry and Roxane know the users from your community/district using between 25-50 million gallons in 2010. Thank you in advance for providing:

1. Your Community/District’s top user (name and gallons) 2. Information on other users if over 25 million gallons annually

february 4, 2011 to: wra technical committee members · february 4, 2011 . to: wra technical...

Documents