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Home My WebLink AboutWK April 14, 2009 0 ,^NDbVE~ 1685 CROSSTOWN BOULEVARD N .W.. ANDOVER, MINNESOTA 55304 . (763) 755-5100 FAX (763) 755-8923 . WWW,CI.ANDOVER.MN.US City Council Workshop Tuesday, April 14, 2009 Conference Rooms A & B 1. Call to Order -7:00 p.m. 2. Discuss 157th Avenue Reconstruction (MSAS 102)/08-37 - Engineering 3. Review & Discuss Municipal Water System - Engineering 4. Review & Discuss Andover Sanitary Sewer & Storm Sewer System - Engineering 0 5. Adjournment 0 0 1685 CROSSTOWN BOULEVARD N.W. . ANDOVER, MINNESOTA 55304 · (763) 755-5100 FAX (763) 755-8923 . WWW.CI.ANDOVER.MN.US City Council Workshop Tuesday, April 14, 2009 Conference Rooms A & B 1. Call to Order -7:00 p.m. 2. Discuss 15ih Avenue Reconstruction (MSAS 102)/08-37 - Engineering 3. Review & Discuss Municipal Water System - Engineering 4. Review & Discuss Andover Sanitary Sewer & Storm Sewer System - Engineering 5. Adjournment 0 0 0 @ 1685 CROSSTOWN BOULEVARD N.W. . ANDOVER, MINNESOTA 55304 . (763) 755-5100 FAX (763) 755-8923 . WWW,CI.ANDOVER.MN.US TO: Mayor and Council Members ~ CC: Jim Dickinson, City Administrator .-- FROM: David D. Berkowitz, Director of Public Works/City Engineer SUBJECT: Discuss/ 157th Avenue Reconstruction (MSAS 102)/08-37 - Engineering DATE: April 14, 2009 INTRODUCTION The City Council requested that the proposed assessments for the 15ih Avenue project be discussed prior to the consideration to award the bid scheduled for the April 21, 2009 regular 0 scheduled City Council meeting. DISCUSSION The public hearing for the 157th Avenue Reconstruction project was held on March 3rd. Discussed at the meeting was the concern that this section of roadway is unique ( collector street functional classification and higher traffic volumes) for this type of assessment and alternative methods to assess such a situation should be evaluated. Staff prepared the feasibility report based on the City's current Assessment Manuel (Policies and Procedure Guide) which provides consistency on how assessments are presented and prepared. Staff feels that the assessment as presented provides the consistency that is needed throughout the City and specifically this type of situation. The design for this section of roadway is greater than most standard local streets due to the higher traffic volumes and truck traffic. A standard local street design has 3 inches of bituminous whereas this section will have 4 inches of bituminous. The extra one inch of bituminous is not included in the proposed assessment value. This cost is covered by City funds. The additional one inch is added to meet the design life of the road to cover the additional traffic and truck traffic. The proposed assessment is $1,490 for existing and potential lots within the MUSA boundary and $5,110 for existing and potential lots outside of the MUSA boundary. Last year urban lots were assessed $1,353 and this year a project that will be constructed this summer and assessed for rural lots has an estimated assessment of $5,770. If the one inch of bituminous 0 was included in the assessment the proposed assessment would be $1,750 and $5,990 respectively. Interest rates will be reduced to 4.5% from what was identified in the feasibility report of 5.5% and the assessment term may be extended from 8 years to 10, 12, 15 or 20 years. The assessment values presented are consistent with other reconstruction projects throughout the City. 0 Mayor and Council Members April 14, 2009 Page 2 of2 The City Council did direct staff to provide alternatives to reduce the proposed assessments for this project. Although not recommended by staff the following are alternatives that could be considered: . Extend the term of the assessment to 10, 12, 15 or 20 years. An amortization will be presented at the meeting based on the actual bid price and 4.5% interest rate. . Defer the potential lot assessments 0 With interest 0 No interest 0 Expiration date if not redeveloped or subdivided 0 Expiration at 25 years if not redeveloped or subdivided with a 10% decreasing value after 15 years until expiration. 0 0 Some combination of the above listed items . Reduce the current assessment portion from 25% to 20% 0 Assessment would lower from $1,490 to $1,190 and $5,110 to $4,090 . Combination of the deferred assessment and reduced percentage The bid opening for this project is scheduled for 11:00 am on Tuesday, April 14, 2009. The proposed adjusted assessments based on the actual bid will be presented at the meeting. Also, the amounts identified in this staff report will be adjusted accordingly. Attached are comments and emails that were received over the last several months. ACTION REQUIRED This is for discussion only and no formal action is required at this time. The City Council is requested to direct staff on the proposed assessments and bring back information to the April 21, 2009 regular scheduled City Council meeting for discussion as part of the consideration to award the bid for this project. Respectfully submitted, 0 ()~CJ. David D. Berkowitz Attach: Comment~d Email/ James Dickinson Qrom: Franklin Peach [frankpeach@gmail.com] ent: Sunday, March 08, 2009 7:07 PM To: Mike Gamache; Sheri Bukkila; Don Jacobson; Mike Knight; Julie Trude; James Dickinson Subject: 157th Ave Reconstruction 3/08/2009 Dear Mayor and City Council members, Thank you for taking the time last Tuesday to listen to the concerns of the residents who live along 15th Ave. I believe that everyone understands that the road is in need of reconstruction, and I appreciate the difficult position you have in trying to balance the needs of the city and the petitions of the residents along this road. To this end I am concerned that if we do put off reconstruction a year or two, we will find the expense even greater to the city and to those of us being assessed for repairs. Throughout the meeting this was a reoccurring theme; however, unfortunately much time was taken up by showing how the burden placed on the residence could be lightened by extending the length of the loan and hoping the bids would come in lower, rather than on actually modifying the percent that the assessed residents would have to pay. The facts are that 157th is not a residential road like many others in the city, and it should not be assessed like other residential roads. Residential roads are typically used by only the local residents 95% or more of the time, and so it makes sense to asses these residents when it comes time to fix the road. 157th Ave, on the other hand, connects two heavily traveled roads, Anoka County Highway 18 and State Highway 65. As a connector road it serves both Ham Lake and Andover and is extensively used by commercial and non residential uses. This road serves the whole community, and it is fundamentally unfair to assess it in the same manner as you would a residential street. If you want to treat it as a residential street, then several things need to be done such as add two or three stop signs, lower the speed limit and put a weight restriction on the road. As long as these things are not done, the road serves the same function as any other Oounty connector road in the city. Ham Lake is paying for their reconstruction at least in part with their MSA funds, as 157th is a Municipal State Aid highway. It is again unfair to treat it identically to a residential road. I believe that Andover should also consider the fact that this connector highway has a higher use than merely residential, and possibly changing the assessment statute for MSA roads. With 157th carrying a heavy load of commercial traffic plus other general traffic because it is a connector road, and with 25 lots from 2 subdivisions using this road as their only access, the mere 25 lots being assessed for this project do not constitute 25% of the traffic. It seems to me that is a very valid reason for modifying the MSA assessment policy in this instance. I propose that the residents of 157th Ave be assessed 12-15% of the construction cost rather than the current 25%. I am hoping this compromise can help put the road through while at the same time ease the burden of the residents and reclaim further equity to all Andover residents who use the road. In the next few days I plan to circulate a petition to the residents of 157th Ave that would state in part that a 12-15% assessment would be acceptable to them in order to expedite the process of reconstruction. At this rate local residents will still be paying significantly higher than what other local residents are assessed, but would also assume their fiscal responsibility for their benefit from the improvement. Thank you again for listening to us. Please contact me if you have any comments or questions. Franklin and Suzanne Peach 75 157th AVE NW Andover, MN http://FrankPeach.com Frankpeach@gmail.com 0 1 Dave Berkowitz Qom: Diane Scholzen [dscholzen@trendent.com] ent: Wednesday, March 04, 2009 9:22 AM To: Mike Gamache; Sheri Bukkila; Don Jacobson; Mike Knight; Julie Trude Cc: Dave Berkowitz; James Dickinson Subject: 157th Road Project Good Morning, I am Diane Scholzen and live at 553 15ih Ave. N.W. I attended last night's council meeting and public hearing on the proposed road project for 15ih Ave N.W. I did not get up to speak as I would have only been reiterating that of which had already been said. I had previously emailed my concerns to Dave Berkowitz a few weeks ago which was to be included in the project packet for your review. I too am concerned about the increase and speed of the traffic that goes by the front of my house along with the comments of others about retirement and job security. I also wonder if my husband and I will continue to be employed from day to day. I agree that this section of road is badly in need of repair and I understand that it is the homeowners responsibility to help pay for it. After the meeting last night I turned on KARE11 and heard Governor Pawlenty say that Minnesota is on track to lose an additional 70,000 jobs over the next three years. That is twice the population of Andover. I agree that in this economic climate the bids for this road project could be the lowest possible and that by waiting 1 or 2 years may result in higher costs. It is also very realistic that the job outlook will not change in that time and could very possibly be worse. Last night comments were made that the interest rate to the homeowners could be lower than expected and the number of years to pay could be extended. This suggestion is not much of a compromise and would only increase the overall amount the homeowner would pay. There was also discussion on deferring the second lot that 4 of the homeowners have to pay for. What option will be offered to the homeowners who will pay for one lot at $5100? This is such a heavily traveled road used by semi trucks (Shaw Trucking in Ham Lake), garbage trucks and delivery trucks to service surrounding neighborhoods, school buses and a major thoroughfare for emergency vehicles. This road not only services the neighborhoods of Nordeen's Addition and Oak Hollow, but the newer developments immediately west of the railroad tracks as well. For these reasons, I am asking the Council to consider a reduction in the Qmeowner's responsibility for this project. This is a fair compromise and would be recognized as the city working with nd for its residents. Thank you for your consideration, Diane Scholzen 0 1 0 1/28/2009 Comments for 15ih Ave NW Reconstruction Project When reviewing the reconstruction project for 15ih Ave, N.W" please consider the state of the current economy along with unemployment rates and realize what a burden this project will be to the landowners who have to pay $5100 - $10,000. With having only a 7 month notice, this hardly gives people a chance to plan, save and prepare for such an expense, especially in these times when no one knows if they will still be employed tomorrow. Even with the proposed 8 year financing that is being offered, this situation could mean the difference in making house payments, paying utilities or buying groceries, Although I realize the road is in need of maintenance, I am asking the Council to please reconsider approving the project at this time, or 0 to provide additional city or state aid to the landowners in order to reduce the amount of money owed. Thank you for your consideration. Diane Scholzen 553 157th Ave NW 763-434-9086 0 0 ~NDbVE~ COMMENT SHEET 157th Avenue Reconstruction (C.P. 08-37) Tuesday, January 20, 2009 I 5:30 p.m. - 6:30 p.m. INFORMATIONAL MEETING j){)uJ oL Name: ~/ AI/-JY S f t:::-. e 1/ <e-,- Address: 773 / S '7 -I--.!J /I f/ *- IlIb) Phone: 7(P3- 7c?/- 9937 E-Mail: (1-51 e e U c:s; Q.3 OS Q Y /J )foe, t!.{)/J. Comments: rte,q :5e /otJ /( /If (0 c;sc: fY) ~ /1 + .s ()N 0 f R (),{) e..,; + y ON (!{) It N E7Z.. - (2. () L{ L- [) L-IJ; v / I3E R r)1-LLY :5 ~ J-.-.TT INtO 'TZU () ? 0 H:\Engineering\City Projects\Open City Projects\08-37 157th Ave. NW (MSAS 102) Reconstruction\Word Documents\Correspondance\COMMENT SHEET. doc 0 ,^NDbVE~ COMMENT SHEET 157th Avenue Reconstruction (C.P. 08-37) Tuesday, January 20, 2009 I 5:30 p.m. - 6:30 p.m. INFORMATIONAL MEETING J!t~) cf /c)' Name: rG!Z,-",- / r Address: ~3 "<;;; q1e~ /d/ ~~ I 0- /"" 7 . Phone: '7~~,- {/3f ?~-scc> E-Mail: Comments: 0 /->7 ~,~ 0 H:\Engineering\City Projects\Open City Projects\08-37 157th Ave, NW (MSAS 102) Reconstruction\Word Documents\Correspondance\COMMENT SHEET-doc 0 S1\NDbVE~ COMMENT SHEET 157th Avenue Reconstruction (C.P. 08-37) Tuesday, January 20, 2009 I 5:30 p.m. - 6:30 p.m. INFORMATIONAL MEETING Name: ,}, I \ S{-<~('c-l t"("l h - - ~ Address: V r-f '7 --- +1\ tl I 0 7 \ J -f ' 1\1 LU , Phone: '1(f;~ - 434 ~ 006 7 E-Mail: J) sp;~)er@~.t()rY\ I Comments: d f c\ \ h ~j e r1 ; +(0 '^' d(\-f> 5, In +- dl' <9..~ V\ Pf'(')f '€ r-I / 0 ~ lrl o~ <J t-h~"") .+-I n ('.)(,j, ..p rI a '1-- f Irn -fZ'-<::::"" 0 H:\Engineering\City Projects\Open City Projects\08-37 157th Ave. NW (MSAS 102) Reconstruction\Word Documents\Correspondance\COMMENT SHEET,doc o ~NDbVE~ COMMENT SHEET 157th Avenue Reconstruction (C.P. 08-37) Tuesday, January 20, 2009 I 5:30 p.m. - 6:30 p.m. INFORMATIONAL MEETING Name: :faC!-f-/~ !(;fdt' "1-. ma /'lie Jj psi ,. Address: l~~9 /~? /lvz //,t{) , Phone:Ji 163-'-I3Lj- 2/~177 E-Mail: UJI(03'-43'5~ q~11 Comments: (1M' ~ tl(}J1iUll J~ Uf '-k,. ~ IJ O y / ( 7JiR;t~_~7~ . [HI! ,~* ll-UA .~ 1M . 'i1. ' _H__ LUlJ VW~ ~ S' ~ ~ tYl (J!d ~ A~ {)G !1iUM~' o H:\Engineering\City Projects\Open City Projects\08-37 157th Ave. NW (MSAS 102) Reconstruction\Word Documents\Correspondance\COMMENT SHEET. doc 0 ~NDbVE~ COMMENT SHEET 15th Avenue Reconstruction (C.P. 08-37) Tuesday, January 20, 2009 I 5:30 p.m. - 6:30 p.m. INFORMATIONAL MEETING Name: fOp 5'/rAlproJf) Address: /to ~/S-Z:/II'.,{lt/;; ;1/, u/ Phone: 7/1- ~9o-6t?3 E-Mail: IJ-J.lI/c)tlERj;;A/t) @ ,40[, CO/f/1 Comments: woo jJ t.-II~ E ' 1# FO C? .JJ (;/(E6# 1-cI<G5' - v~r;Er4-ClF - 0 Tf. I;C 1- 5111t(~ > \ 0 H:\Engineering\City Projects\Open City Projects\08-37 157th Ave, NW (MSAS 102) Reconstruction\Word Documents\Correspondance\COMMENT SHEET. doc o S1\NDbVE~ COMMENT SHEET 157th Avenue Reconstruction (C.P. 08-37) Tuesday, January 20, 2009 I 5:30 p.m. - 6:30 p.m. INFORMATIONAL MEETING Name: L4try $7?J;~ :Sc.JJoIZIL-rV J Address: 655 J5?H1!+u L-- N U-J Phone: 1&3-Lf3Lf-QCf6& E-Mail: Comments: bfJ!JLl.,{~ of ~ tu-15i0 of- ou( drrve-uJ~ I ;+- o mtt/as if IJt/lj' dJM~wJ:f it) J.Af>> "/--IN~ tlrJ'VfLL0C/ {)J~ ~~ '-{;J)7YL'iJu- .lasf ()U()tLtJt~ W-lft) tUi#11fld S~~C;; ~ I JduLlJ jjG-}[) ~ f)f) CtJ nV.-n5 JC1.jLU of, fraff-rc " Wv iYJtut tv~N- '1;) @.ffYILoid.if M- pan~ J ~ Jr / V e uJaLf JJ'J-r'IJf) (U../ tLf Y-flh ffr.u~~/tur/;) 11 riA, ~ IJ f1c1-f./m 1'YYdCL/ Ji;\~il~ 'h ~% ~ Y--Ah dr/VLW~' tORI Aal/lj/) t (e-C-e.l'v.(/-t ~,A-nd6\JU AJcWS/fltT4 -Gr ~Ul y"S , Lv -L U C2ed -to b uA "4\1--1"- ~f; S fv,'J }?-td, T ht{ \/ L. lO (.t V /" ou ~) y ,-(__VY)~ -f d ib1M V--u -j7) f;' v){:J tJ7A~r w Vvy I J -cr- o b ~t tll Vu r-e eel v e (1 tZ- t'p S P{Jf1 SU loa de . H:\Engineering\City Projects\Open City Projects\08-37 157th Ave, NW (MSAS 102) Reconstruction\Word Documents\Correspondance\COMMENT SHEET. doc 0 C I T Y o F @ NDOVE 1685 CROSSTOWN BOULEVARD N.W.. ANDOVER, MINNESOTA 55304. (763) 755-5100 FAX (763) 755-8923 . WWW.CI.ANDOVER.MN,US TO: Mayor and Council Members CC: Jim Dickinson, City Administrato FROM: David D. Berkowitz, Director of Public Works/City Engineer SUBJECT: Review & Discuss Municipal Water System- Engineering DATE: April 14, 2009 INTRODUCTION A 2009 goal for the City Council is to review the Andover Municipal Water System in detail to get a better understanding of the system and the need for system improvements. 0 DISCUSSION Municipal Water System items that will be reviewed and discussed include details on the existing system (statistics & operation), proposed improvements and conservation water rates that are required to be implemented by January 1,2010 to encourage water conservation. Brian Kraabel has provided information that is attached for each topic. Also attached is a bar chart showing the water use in 2008 compared to 2007. ACTION REQUIRED This item is for review and discussion. No action is required at this time. Action will be requested at a later date regarding the water rate structure. Respectfully submitted, (/)~-&.{:J . David D. Berkowitz Attachments: Water System Statistic;,(;onservation Rates~ity's Current & Proposed Water Rate Structur~nd Bar Chart.-/ 0 Water System 0 1. Wells #2 and #3 - Mt. Simon/Hinckley Aquifer This is a protected aquifer meaning no more wells can be drilled into it. Radium issues - Radium Compliance Agreement with MDH Pumping Capacity - 850 gpm to 1000 gpm #4 thru #9 - FranconialIronton/Galesville Aquifer These 6 wells pump to the WTP Pumping Capacity - 1000 gpm to 2500 gpm #1 was sealed in January 2009 Mt. Simon/Hinckley Aquifer - Original depth of well 601 ' - When sealed 435' This was the first well drilled in Andover Very soft formation and started to pump considerable amounts of sand into the system 2. Water Treatment Facility - Iron and Manganese Removal Plant Design Capacity - 9 mgd Influent from wells up to 8000 gpm 8 filter bays - 4 on the east bank and 4 on the west bank Summer time all 8 filters are required Winter months only 4 are required, switch banks every 10 days +/- 1.5 million gallon underground reservoir 0 4 high service pumps - 3000 gpm each Chemicals used in the treatment process 1. Sodium Hypochlorite - for disinfection and oxidation of iron/manganese 2. Sodium Permanganate - for further oxidation of manganese 3. Orthophosphate - for corrosion control 4. Polymer - used as settling agent for backwash water from the filters and for bringing the smaller particles' of iron and manganese together to form larger particles for easier removal in the filters. 3. Addition of the Plate Settler Will allow the entire treatment process to be more efficient and save wasted water. Backwash water will return to plant immediately through the plate settler. 4. Water System Quantities 2 Water Tower - .5 million gallons (west side of town) and 1 million gallons (City Hall) Water mains - 569,450 ft. of pipe or 108 miles Fire Hydrants - 1115 Valves - 2576 Residential Connections - 5908 with a population of 19,379 CommerciallInstitutional- 136 o Water Department Projects Underway 1. Finishing the tower rehabilitation 2. Replacement of operating rods within 260 fire hydrants 3. WTP Plate Settler Addition Water Department Projects - CIP 0 1. Construct New 2 Million Gallon Clearwell (underground reservoir) Projected/2011 2. Construct Well #10 (Shadowbrook property) Projected/2012 3. Water main along South Coon Creek Drive - Projected/2012 4. Demolish 500,000 Gallon Water Tower - Projected/2012 5. Construct Water Treatment Facility #2 - Projected/2013 All of these items are contingent upon development Plans for Well House # 1 1. Currently the building is used for storage of water system parts. 2. With the removal of the pump and motor, more storage room was created for other smaller equipment. Keep this site for such uses, # 1 and #2 are water department recommendations, 3. Demolish building and sell the site for residential. 4. Turn site into a park and use building as a warming house in the winter.??????? 0 0 0 Conservation Rates Minnesota Statutes, section 103G.291, was amended in 2008 to include a requirement for public water suppliers serving more than 1,000 people to adopt a water rate structure that encourages conservation: Minnesota Statutes, section 103G.291, subd. 4. Conservation rate structure required, (a) For the purposes of this section, "conservation rate structure" means a rate structure that encourages conservation and may include increasing block rates, seasonal rates, time of use rates, individualized goal rates, or excess use rates. The rate structure must consider each residential unit as an individual user in multiple-family dwellings. (b) To encourage conservation, a public water supplier serving more than 1,000 people in the metropolitan area, as defined in section 473.121, subdivision 2, shall use a conservation rate structure by January 1,2010. All remaining public water suppliers serving more than 1,000 people shall use a conservation rate structure by January 1,2013. (c) A public water supplier without the proper measuring equipment to track the amount of water used by its users, as of the effective date of this act, is exempt from this subdivision and the conservation rate structure requirement under subdivision 3, paragraph (c). In addition, Minnesota Statues, section 103G.291, was further amended to read: Subd. 3. Water supply plans; demand reduction, (c) Public water suppliers serving more than 1,000 people must employ water use demand reduction measures. including a conservation rate structure. as defined in subdivision 4. Daragraph (a). unless exemDted under subdivision 4. paragraph (c). before requesting approval from the commissioner of health under section 144.383, paragraph (a), to construct a public water supply well or requesting an increase in the authorized volume of appropriation. Demand reduction measures must include evaluation of conservation rate structures and a public education program that may include a toilet and showerhead retrofit program. 0 Public water suppliers serving more than 1,000 residents will need to adopt a conservation rate structure before requesting well construction approval for a public water supply well or before requesting an increase in permitted volume for their water appropriation permit. Examples of Conservation Rates: Below are examples of rate structures that encourage conservation. Many variations and combinations of these examples are possible. NOTE: Rate structures often include a service charge (base rate) and a volume based charge. Service charges may cover fixed costs (capital improvements) and the volume charge is often for operation and maintenance costs. Volume charges usually use units of 1,000 gallons or 100 cubic feet (748 gallons). Increasing Block Rates: Cost per unit increases as water use increases within specified "blocks" or volumes. The increase in cost between each block should be significant enough (25% or more and 50% between the last two steps) to encourage conservation. Example: 0-6,000 gallons = $2.50/1 000 gallons. 6,000-12,000 gallons = $3.15/1000 gallons. 12,000-24,000 gallons = $4.00/1000 gallons. Above 24,000 gallons = $6.00/1000 gallons. Seasonal Rates: The rate per unit increases in the summer to encourage the efficient use of water during peak demand periods caused by outdoor water uses. Seasonal rates can take the form of a surcharge added to the normal rate or a separat~ fee s~hedule for winter and summer periods. Example: Surcharge method - $1.00/1 000 gallons is added on top of the regular fee schedule for all 0 water use between May 1 and October 1. Page 1 Conservation Rates Page 2 0 Time of Use Rates: Water rates are higher at times of the day when water use demands are high. This rate requires specialized meters that can monitor water use during specified segments oftime, for instance, every 15 minutes. Example: Water rates are reduced by $0.75 for customers that agree not to use water for certain purposes or over a set volume of water during certain times of the day or periods of high water demands. Individualized Goal Rate (Water Budget Rate): A rate with tailored allocations developed for each customer. The rates increase as the allocation is used or exceeded by the customer. The allocation is generally based upon winter or January use. Example: A family of four used 6,200 gallons in January. Summer use is higher than January use so a factor is applied to determine a summer allocation (1.5 x 6,200 gallons = 9,300 gallons). 0-6,000 gallons = $2.50/1000 gallons. 6,000-9,300 gallons = $2.75/1000 gallons. 9,300-18,600 gallons = $4.00/1000 gallons. (Allocation is exceeded.) Above 18,600 gallons = $6.00/1 000 gallons. Excess Use Rates: Cost per unit increases greatly above an established level in order to trigger a strong price signal that discourages excessive use. This rate is similar to an increasing block rate but with much higher charges for the larger volume blocks. Example: 0-6,000 gallons = $2.50/1 000 gallons 6,000-12,000 gallons = $3.15/1000 gallons 12,000-24,000 gallons = $5.00/1000 gallons (Excessive Use Rate) 0 Above 24,000 gallons=$7 .50/1 000 gallons (Excessive Use Rate) Multiple-Family Dwellings: Total water use in a multiple-family dwelling, which has only one water meter for the entire dwelling, may exceed that of a single-family dwelling. The statute does not require individual water meters for each residential unit within a multiple-family dwelling; however, the required conservation rate at which the multiple-family dwelling's water use is billed must consider the number of residential units within that multiple-family dwelling. Example: A four-plex uses a total of 18,000 gallons per month or approximately 4,500 gallons per residential unit. Water use for each residential unit falls within the first block (0-6,000 gallons) of the above Excess Use Rate example. A rate of $2.50/1000 gallons would apply up to a total use of 24,000 gallons for the multiple-family dwelling. Thereafter, the rate increases according to the rate schedule, always considering each residential unit as an individual user. Non-conservation rate examples: Declining (Decreasing) Block Rates: The cost per unit of water (cubic foot or gallon) decreases as the water use increases beyond the basic block. This rate structure provides no incentive to conserve because the cost of water per unit decreases with increased use. Flat Rates: A set fee allows the use of an indefinite amount of water. This rate structure is used where water is unmetered and provides no incentive to conserve water because cost is unrelated to volume used. Uniform Rates: The cost per unit is the same regardless of the volume used. This rate structure is considered conservation neutral. Service Charge (Base Rate) that includes a Minimum Water Volume: The inclusion of a minimum volume of water in the service charge (base rate) discourages conservation especially if the minimum volume 0 exceeds average customer usage. Conservation Rates lO-13-08.pdf Water Rate Structure 0 2009 Quarterly Water Rates Proposed $10.78 Base Rate $10.78 Base Rate $1.59 per 1,000 for pt 9,000 Gallons $1.59 per 1,000 for 1st 20,000 Gallons $1.65 per 1,000 for 9,001 - 21,000 $1.99 per 1,000 for 20,001 - 60,000 $1.71 per 1,000 for 21,001 - 36,000 $2.99 per 1,000 for 60,001 - 150,000 $1.80 per 1,000 for 36,001 - 60,000 $4.49 per 1,000 for 150,001 - 200,000 $1.94 per 1,000 for 60,001 - 99,000 $6.74 per 1,000 for 200,001 and above $2.16 per 1,000 for 99,001 - 201,000 $2.58 per 1,000 for 201,001 and above DNR Mandated Block Increase with % per step by 2010 (See attached Minnesota Statute 103G.291) 2007 Residential Connections (5857) Dry Year 1 st Quarter - Average water used per connection 17,440 gallons 2nd Quarter - Average water used per connection 60,501 gallons 3rd Quarter - Average water used per connection 62,514 gallons 4th Quarter - Average water used per connection 18,100 gallons 1 st and 4th quarter average 17,770 gallons x 4 quarters = 71,080 year 2nd and 3rd quarter average 61,508 gallons Average used for irrigation/outside activity 43,738 gallons x 2 = 87,476 year o 135 Residential connections used 150,000 gallons to 333,000 gallons per quarter for irrigation and/or some other outside activity. These 135 represent 2.3% of the total residential connections. The highest residential connection consumed 726,000 gallons for the year 2007 of which approximately 666,000 gallons was used for irrigation/outside activity. 2008 Residential Connections (5908) Wet Year 1 st Quarter - Average water used per connection 15,500 gallons 2nd Quarter - Average water used per connection 47,175 gallons 3rd Quarter - Average water used per connection 68,911 gallons 4th Quarter - Average water used per connection 17,050 gallons Yearly average water used per connection 148,636 gallons 1 st and 4th quarter average (inside) 16,275 gallons x 4 quarters = 65,100 year 2nd and 3rd quarter average (combined inside/outside) 58,043 gallons per quarter Average used per qtr. outside activity 41,768 gallons x 2 = 83,536 year The highest residential connection consumed 677,000 gallons for the year 2008 of which approximately 622,320 gallons was used for irrigation/outside activity. o 69 Residential connections used 150,000 gallons to 311,000 gallons per quarter for irrigation and/or some other outside activity. These 69 represent 1.2% of the total residential connections. 0 250,000,000 200,000,000 150,000,000 1_20071 .2008 100,000,000 50,000,000 0 \~~ ~~ ~~ ~<t ~~~ \V~ \~ ~v~ C:,r{j~ O<:J" ~o4 <:)r{j<:J 2007 2008 Jan 38,851,000 Jan 40,418,000 Feb 33,244,000 Feb 35,607,000 0 Mar 37,981,000 Mar 38,079,000 Apr 53,953,000 Apr 38,830,000 May 146,884,000 May 83,339,000 Jun 194,051,000 Jun 129,836,000 Jul 222,974,000 Jul 199,255,000 Aug 142,795,000 Aug 193,808,000 Sep 116,341,000 Sep 119,346,000 Oct 48,874,000 Oct 58,426,000 Nov 39,478,000 Nov 37,687,000 Dee 41,196,000 Dee 39,707,000 Chemical Price Increase 1. Sodium Permanganate - up 53% 2. Fluoride - up 40% 3. Orthophosphate LPC-31-18% Depending on how much water is pumped in 2009, the projected increase in chemicals alone will be somewhere between $18,000.00 and $27,000.00. 0 0 @ 1685 CROSSTOWN BOULEVARD N.W. . ANDOVER, MINNESOTA 55304 . (763) 755-5100 FAX (763) 755-8923 . WWW.CI.ANDOVER.MN.US TO: Mayor and Council Members ~ CC: Jim Dickinson, City Administrato ."".. FROM: David D. Berkowitz, Director of Public Works/City Engineer SUBJECT: Review & Discuss Andover Sanitary Sewer & Storm Sewer System - Engineering DATE: April 14, 2009 INTRODUCTION The Andover Sanitary Sewer and Storm Sewer systems will be reviewed and discussed with the 0 City Council. DISCUSSION Municipal Sanitary Sewer and Storm Sewer systems consist of many miles of pipe and several thousand structures. Staff will review the system statistics and operations. Brian Kraabel has prepared the attached items for your information and discussion. ACTION REQUIRED This item is for review and discussion. No action is required at this time. Respectfully submitted, ~CJ~ David D. Berkowitz Attachments: Sanitary Sewer System Statistics~orm Sewer System Statistics "1: Cost savings for projects completed with Public Works staff-/ 0 Sanitary Sewer o Sewer mains - 479,838 ft. or 91 miles Sizes range from 8" to 36" Lift Stations - 9 2 lift stations with permanent emergency backup generators Each lift station has two pwnps and a third on the shelf for backup Force mains (4" - 6") from the lift stations - 5470 ft or 1.04 miles Sanitary sewer manholes - 2180 Department goal is to clean, by jetting, 18 miles per year 2008 - crews cleaned 27 miles Televising of sanitary sewer mains - 53,840 ft. or 10.2 miles Repairs were made to about half a dozen-sewer services in the area of 156th Ln and Drake St. a few years ago. Since this time there have been no failures to residential services. Originally there were about 5 or 6 services broken that were dug up and repaired. After televising the entire area we found about 5 or 6 more services in need of repair. A new procedure was done to fix the problems with out the major task of excavating the area. A fiberglass liner was installed in each of the problem services and the problems were eliminated. Since this time, staff continually goes back to re-televise the area to make sure nothing o has changed. Over the years, since the purchase of the televising trailer, staffhas found some cracks and holes in main lines. A contractor is called in to repair as needed. The department purchased a flow meter to measure flows and depths in the sanitary sewer system. This meter will tell us if the system is at capacity or not. Staff can then judge as to when improvements to the system are required. Sanitary Sewer CIP 1. Crosstown Blvd Sewer Line - Contingent upon development east of the railroad tracks 2. Rural Reserve Trunk Sanitary Sewer - Contingent upon the market demand. 3. Yellow Pine Lift Station - Contingent on the market demand 0 Storm Sewer Storm sewers cover the entire City of Andover. 36 square miles o Pipe - 350,026 ft. or 67 miles of various diameter sizes (12" - 48") Catch Basins 2603 Manholes - 533 Culverts - 289 of various sizes and lengths (12" - 36") Retention Ponds - 125 throughout the city 2008 Catch BasinsIFlared Ends - Cleaned and/or repaired - 200 2008 Storm Pipe Cleaned and/or inspected - 26,500 ft. (5.03 miles) 2008 Storm Pipe Televised - 3392 ft. (0.64 miles) There is 1 Lift Station between 139th Ave and 138thLn. in the Hills of Bunker Lake. This lift station is to protect homes on a land locked pond. In 2008 a new larger backhoe was purchased. This machine was put right to work installing 74' of 30" metal culvert and 72' of36" metal culvert on Old Constance Blvd. This was the first big job handled by city staff. The old culverts were removed and the new installed over a 3 - 4 day period. This included o repaving of the road surface in time to do the seal coating. Another project was completed west ofMakah Street, in the Meadowoods Addition west of 7th Avenue. An outlet structure drains the entire development to the backwater of the Rum River. The old structure was made out of railroad ties that were in very bad shape, This was removed and a manhole was added along with a section ofHDPE (plastic) pipe and about 30 yards of rip rap. This was a very difficult job because of the lay of the land and the weight of the manhole structure. Staff did an excellent job in accomplishing this task. A local Boy Scout doing his work towards becoming an Eagle Scout, turned the road that was cut in through the trees into a trail. Wood chip were used as the path, Inspections were done of the storm sewer system and many structure were found in bad need of repairs. A cement spray-patching machine was rented to do the repair. City staff as a way of saving money did this work. Staff could start work immediately on these items and a contractor would not be available for a few weeks. Because of the knowledge and capabilities of the staff this work went rather well. The City is now in the process of purchasing a machine, included in the CIP, to do this work. Storm Sewer Projects - elP 1. A variety of projects are planned. One project will be to add a storm overflow structure to an existing pond area at 2128 159th Ln. 2. A French drain will be looked at for the comer of 181 st Ave. and Aztec St. 0 3. A concrete spray-patching machine is to be purchased this spring. This will be used for rehabilitation of some deteriorating catch basins and manhole structures. 0 I 0 It') C'l 0 0 - 0 0 0 a- a- \0 \0 0 - t"- OO a- C'l C'l 0 It') 0 0 ~ C! C! 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