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HomeMy WebLinkAboutWell Correspondence 00 (15) Report on Water Main Extensions for Areas of South Windsor Contaminated by EDB Prepared by: Paul F. Breen, P.E. - 11/17/86 1 ti TABLE- OF CONTENTS Page r Discussion 1 - 2 List of Exhibits 3 Exhibits 4 - 23 Letter to Mr. Richard Sartor, Town Manager Connecticut Water Company Annual Report 1 1 South Windsor EDB/EDC Extension Proposals TRC Environmental Consultants, Inc. has completed a report for the Town of South Windsor dated June 16, 1986, titled Report of the Groundwater Investiga- tion of EDB and EDC Contamination South Windsor, Connecticut, on ethylene dibromide and ethylene dichloride contamination of homeowner wells within the town. That report recommended extension of water lines into the contaminated areas as the preferred remedial alternative for water supply to the affected homes. This report contains three basic alternatives proposed by The Connecticut Water Company as solutions for the EDB/EDC problem in South Windsor. The three proposals are called the 8" Proposal, 12" Proposal, and 16" Proposal for the extension of water mains from the company's existing distribution system in South Windsor. See Exhibits #3, 4, 5 for the proposals. The major difference between the proposals is the pipe size and the consequent ability of that pipe size to convey water. The locations of the proposed mains are shown on Exhibit 1. The existing distribution mains are shown on Exhibit 2. It is The Connecticut Water Company's (C.W.C.) understanding that the State of Connecticut Department of Environmental Protection (D.E.P.) has determined that a six-inch diameter pipe is the minimum pipe size required to meet the r domestic potable water needs of those units experiencing EDB/EDC contamination. C.W.C. also understands that D.E.P. will pay for 60% of "allowable project costs." This would mean that "others" (Town of South Windsor and C.W.C.) pay for 40% of the allowable costs plus 100% of the unallowable costs. It is C.W.C. 's understanding that "allowable" costs include (but are not necessarily limited to) six-inch diameter pipe along the frontages of the con- taminated units, main to curb services, service connections, well abandonments, engineering, administration, and inspection. Unallowable costs include, but are not limited to, a percentage of the pipe if it is larger than the six-inch mini- mum, and any pipe not fronting contaminated units. Exhibits #6 and 7 compare the hydraulic capacities of different sizes of pipe, and this is used to evaluate how much D.E.P. will pay for. Exhibit #8 can be used to compare the costs of various pipe sizes, and at the same time show how that cost is shared. In the three proposals put forth by C.W.C., C.W.C. is willing to pay for 100% of the costs for watermain installation in the non-contaminated areas. We d would arrange for installations as a separate contract not involving the state or the town. Since eight-inch diameter pipe is the Company's standard minimum pipe size, C.W.C. would expect the town to pay for the difference between what D.E.P. is going to pay and the cost for 8" watermain in the EDB/EDC contaminated areas. The hydraulic gradient for the area under consideration would be controlled by the 2.3 million gallon storage tank on Ellington Road. This tank's overflow elevation is 500' USGS. The mininimum water level is generally 4801. Some of the EDB areas are at low elevations that require pressure reducing equipment. - C.W.C. would install any necessary pressure reducing facilities at its cost. The average static pressure at selected locations is given in Exhibit 9. 1 -1- So. Windsor, EDB 11/17/86 C.W.C. would also pay for the installation of any fire hydrants. Hydrant locations °would be selected by the appropriate local fire officials. C.W.C. 's recommended alternate is the 12" Proposal. Eight-inch pipe could oi' - adequately provide water if the area were to develop as single family residen- tial property. Since the area is slated to be developed as industrial/commer- cial property, a 12" or 16" pipe could better handle the rate of flow required. It is our judgment that while a 16" pipe can handle more flow than a 12" pipe, in this instance the increased flow does not appear to justify the increased cost. See Exhibit 9 for the tabulation of flow from various pipe sizes to 16 selected locations. The advantages of having a 12" watermain capable of carrying large quanti- ties of water at optimum pressure in prime area slated for industrial/commercial development are obvious. Future water users in the area where C.W.C. would pay the entire cost of the main would be able to connect to the main for only the cost of the service connection; they would not be assessed a portion of the total cost. Our standard Customer Refundable Advance Payment Agreement form, Exhibit 13, will require appropriate modification to suit the financial and grant obli- gations of the town. Such modifications are subject to the approval of the * Connecticut Department of Public Utility Control. Item 8 of the Agreement form would apply to the extent the town can convey title of the extension the town pays for. The current refund amount for a standard home is $491.00. We would be pleased to discuss all aspects of this report in detail. r Paul F. Breen, P.E. -2- So. Windsor, EDB 11/17/86 South Windsor EDB/EDC Extension Proposals List of Exhibits: 1. South Windsor EDB plan 2. Connecticut Water Company Distribution Map 3. Eight-inch pipe proposal 4. Twelve-inch pipe proposal 5. Sixteen-inch pipe proposal 6. Hydraulic capacity calculations 7. D.E.P. 's Cost sharing formula for EDB contaminated areas 8. Pipe size cost comparison 9. Flow available at 25 psi residual pressure 10. TRC Environmental Consultants, Inc. Figure 6-1: Potential Areas of Contamination 11. TRC Figure 2-3: Future Development Areas 12. C.W.C. Rate schedule 13. Customers Refundable Advance Payment Agreement 14. C.W.C. Annual Report 1 1 -3- I St T1WHY wit a ? DR \ \ `\ p WAPPING o DEW,', ter+ Cem / New ° uP o CI Wapping q �P as¢ O Cent p0.a ESSINDEOX RD. W ONR(MD OR OA'Y OR.a 2 BAYBERRY Candlewood Estate r i 1F•IS / / rndnn D QQQ • ��� GG as / LCL 4 Q `' e`"F Q4- 4 i MA/E� firer, ",S�u CCPPPPP PPp / f SCALE: i"f i 60Q' EEEEE EXISTING CWC -WATER MAIN PPPPP PROPOSED MAIN: INSTALLED AT CWC EXPENSE CCCCC PROPOSED MAIN: CONTAMINATED AREAS 1 SOUTH WINDSOR EDB/EDC ,1 THE CONNECTICUT WATER COMPANY EXHIBIT # 1 So. Windsor, EDB 11/17/86 Discussion of Exhibit #3: Eight-Inch Proposal This proposal considers eight-inch diameter pipe run throughout the area of consideration. Estimated costs to D.E.P., C.W.C., and the Town of South Windsor are calculated. D.E.P. 's portion of the cost is based on their cost sharing formula and the hydraulic capacity calculations. The town would pay for what D.E.P. does not pay for along the frontage of those units with EDB contaminaton. M C.W.C. pays for 100% of the pipe needed to get to the contaminated area. Discussion of Exhibit #4: Twelve-Inch Proposal The transmission lines are 12" diameter and other lines serving residen- tial areas are eight-inch. The town's cost is equal to that in the eight-inch proposal. Discussion of Exhibit #5: Sixteen-Inch Proposal The transmission lines are 16" diameter; others are eight-inch diameter. Estimated cost breakdown is similar to other proposals. Town's cost is equal to that in the eight-inch proposal. 1 -6- 1 So. Windsor, EDB 11/17/86 Exhibit #3 8" Proposal i Estimated Cost to Others Estimated Cost to D.E.P. (C.W.C. and So. Windsor) Felt Rd. Ext. 1400' - 8" DIP @ $36/LF 1400 x 36 x 39% = 19,700 1400 x 36 x 61% = 30,700 Ridge Rd. 625' 625 x 36 x 39% = 8,800 625 x 36 x 61% = 13,700 Deming St. 780' 780 x 36 x 39% = 11,000 780 x 36 x 61% = 17 100 1520' -0- *1520 x 36 x 100% = 54,700 2300' -0- *2300 x 36 x 100% = 82,800 Buckland St. 4400' -0- *4400 x 36 x 100% = 158,400 Smith St. 1850' -0- *1850 x 36 x 100% = 66,600 1200' 1200 x 36 x 39% = 16,800 1200 x 36 x 61% = 26,400 Clark St. 2550' -0- *2550 x 36 x 100% = 91,800 1700' 1700 x 36 x 39% = 23,900 1700 x 36 x 61% = 37,300 Subtotal $80,200 So. Windsor Sub- total: $125,200 Engineering 10% 8,000 Engineering 10% 13,000 Contingency 20% 16,000 Contingency 20% 26,000 D.E.P. Total $104,200 So. Windsor Total $164,200 *C.W.C. Subtotal $454,300 Engineering 10% 45,400 Contingency 20% 91,000 C.W.C. Total $590,700 Others Total $754,900 -7- So. Windsor, EDB Exhibit #4 11/17/86 12" Proposal Estimated Cost to Others Estimated Cost to D.E.P. (C.W.C. and So. Windsor) Felt Rd. Ext. 140OLF - 12" DIP @ $42/LF: 1400 x 42 x 26.4% = 15,500 1400 x 42 x 73.6% = 43,300 Ridge Rd. 625' - 8" @ $36 625 x 36 x 26.4% = 5,900 625 x 36 x 73.6% = 16,600 Deming St. 780' �- 12" @ $42 780 x 42 x 26.4% = 8,600 780 x 42 x 73.6% = 24,100 1520 - 12" @ $42 -0- *1520 x 42 x 100% = 63,800 2300' - 12" @ $42 -0- *2300 x 42 x 100% = 96,600 Buckland St. 4400' - 12" @ $42 -0- *4400 x 42 x 100% = 184,800 Smith St. 1850' - 12" @ $42 -0- *1850 x 42 x 100% = 77,700 1200' - 12" @ $42 1200 x 42 x 26.4% = 13,300 1200 x 42 x73.6% = 37,100 Clark St. 2550' - 8" @ $36 -0- *2550 x 36 x 100% = 91,800 1700' - 8" @ $36 1700 x 36 x 26.4% = 16,200 1700 x 36 x 73.6% = 45,000 Subtotal $59,500 $680,800 Engineering 10% 6,000 68,000 Contingency 20% 12,000 136,000 D.E.P. Total $77,500 Others Total $884,800 So. Windsor Total $164,200 C.W.C. Total $720,600 -8- So. Windsor, EDB 11/17/86 Exhibit ��5 16" Proposal Estimated Cost to Others Estimated Cost to D.E.P. (C.W.C. and So. Windsor) Felt Rd. Ext. 1400' - 16" DIP @ $50/LF 1400 x 50 x 23% = 16,100 1400 x 50 x 77% = 53,900 Ridge Rd. 625' - 8" @ $36/LF 625 x 36 x 23% = 53%200 625 x 36 x 77% = 17,300 Deming St. 780' - 16" @ $50/LF 780 x 50 x 23% = 9,000 780 x 50 x 77% = 30,000 1520' - 16" -0- *1520 x 50 x 100% = 76,000 2300' - 16" -0- *2300 x 50 x 100% = 115,000 Buckland St. 4400' - 16" @ $50/LF -0- *4400 x 50 x 100% = 220,000 Smith St. 1850' - 16" @ $50 -0- *1850 x 50 x 100% = 92,500 1200' - 16" @ $50 1200 x 50 x 23% = 13,800 1200 x 50 x 77% = 46,200 Clark St. 2550' - 8" @ $36/LF -0- *2550 x 36 x 100% = 91,800 1700' - 8" 1700 x 36 x 23% = 14,100 1700 x 36 x 77% = 47,100 Subtotal $58,200 $789,800 Engineering 10% 5,800 79,000 Contingency 20% 11,600 158,000 D.E.P. Total $75,600 Others Total $1,036,800 So. Windsor Total $164,200 C.W.C. Total $872,600 -9- So. Windsor, EDB 11/17/86 Discussion of Exhibit #6: Hydraulic Capacity Calculations - Since D.E.P. 's share of the cost of any pipe larger than the minimum is based on the relative hydraulic capacities of the pipes, these calculations were necessary for comparison. This exhibit compares: 6" vs. 8" 6" vs. 12" 6" vs. 16" 8" vs. 12" The column on the right-hand side of the exhibit indicates the hydraulic capacity the smaller pipe has compared to the larger pipe. These calculations are based on the Hazen-Williams formula: 0.63 0.54 V = 1.318C R S and V = Q/A where V = velocity in ft/sec, R = hydraulic radius in ft, S = slope of the hydraulic gradient, C = the Hazen-Williams coefficient of relative roughness. Q = water quantity in ft3/sec A = Cross sectional area of the pipe in ft2. 1 -10- I So. Windsor, EDB 11/17/86 Exhibit ��6 Hydraulic Capacity Calculations 6" Diameter vs. 8" Diameter D "C" Factor HL/1000' Q (Inches) — (Feet) (Gal/24 hr) HC6"/HC Actual 6 100 3.10 200,000 47% 8 100 3.10 425,000 6 140 32.9 1,000,000 47% 8 140 32.9 2,132,000 6" vs. 12" 6 100 16.9 500,000 16.2% 12 100 16.9 3,084,000 6 140 0.86 100,000 16.2% 12 140 0.86 619,000 6" vs. 16" 6 100 61 1,000,000 7.6% 16 100 61 13,143,000 6 80 25.6 500,000 7.6% M 16 80 25.6 6,568,000 6 140 32.9 1,000,000 7.6% 16 140 32.9 13,136,000 8" vs. 12" 8 120 1.50 345,000 34.5% 12 120 1.50 1,000,000 8 140 0.41 200,000 34.6% 12 140 0.41 577,000 8 80 197• 3,200,000 34.6% 12 80 197. 9,278,000 P.F.B. 11/4/86 —11— I r So. Windsor, EDB 11/17/86 Discussion of Exhibit #7: D.E.P. 's Cost Sharing Formula for EDB Contaminated Areas Using the hydraulic capacities established in Exhibit #5, this exhibit shows the calculations involved in establishing how much D.E.P. is going to pay for various pipe sizes. D.E.P. has decided that a six-inch diameter is the minimum size required to service the contaminated units. Six-inch pipe is compared to 8", 12", and 16". r -12- So. Windsor, EDB 11/17/86 Exhibit #7 D.E.P. 's Cost Sharing Formula for EDB Contaminated Areas Unallowable Project Costs (as a percent of total costs) = [(HCact - HCmin)/HCact] 2/3 HCact = Ilydraulic Capacity of actual pipe installed HCmin = Hydraulic Capacity of the minimum pipe size * D.E.P. has determined that the minimum size pipe required to bring potable water to the EDB contaminated units is 6" diameter. Allowable Project Costs: • = 1 - ((HCact - HCmin)/HCact) 2/3) D.E.P. is going to pay for 60% of "Allowable Project Costs" D.E.P. Funding: . _ ( .60) (1 - ((HCact - HCmin)/HCact) 2/3) Others (Town and C.W.C.): _ ( .40) (1 - ((HCact - HCmin)/HCact) 2/3) + ((HCact - HCmin)/HCact) 2/3 r Example #1 HC6"/HC8" = 47% - See Exhibit #1 D.E.P. pays: (.60) (1 - ((1.00 - .47)/1.00) 2/3) _ ( .60) 0 - .53 (2/3)) _ ( .60) (1 - .35) _ ( .60) (.65) _ .39 = 39% Others (Town + C.W.C.) pay: (.40) (.65) + ( .35) _ (.26) + .35 _ .61 = 61% P.F.B. 11/4/86 -13- r So. Windsor, EDB Exhibit #7 (cont.) 11/17/86 Example #2 HC6"/HC12" = 16% State: (.60) 11 - ((1.00 - .16)/1.00) 2/31 r = (.6) (1 - (.84) 2/3) = ( .6) (1 - .56) = ( .60) (.44) = .264 = 26.4% Others: (.40) (.44) + ( .56) = .176 + .56 = .736 = 73.6% Example #3 HC6"/HC16" = 7.6% State: (.60) (1 - ((1.00 - .076)/1.00) 2/3) = ( .60) (1 - (.924) 2/3) = ( .60) (1 - ( .616) = (.60) (.384) =.23 = 23% Others: (.40) (.384) + .616 = .154 + .616 = .77 = 77% r P.F.B. 11/17/86 r r -14- 1 1 So. Windsor, EDB 11/17/86 Discussion of Exhibit #8: The cost per linear foot is an estimate and may vary. The numbers used in this exhibit are "best guesses" and are used for illustrative purposes. The town and C.W.C. will have to reach an agreement on how they split the cost for what D.E.P. won't pay for. This exhibit shows how much D.E.P. will contribute towards construction costs. It should be noted that D.E.P. participates only in that pipe that is installed along the frontage of those residences contaminated by EDB/EDC. r r r —15— r r So. Windsor, EDB 11/17/86 Exhibit #8 Pipe Size Cost Comparison Actual Pipe Size Cost Engrg./10% Installed Contingency/20% Cost Share (Inches) $/L.F. x 1.3 % $/LF 6" $30 $39 D.E.P. 60% $23.40 Others 40% 15.60 8" $36 $47 D.E.P. 39% $18.33 Others 61% 28.67 12" $42 $54.60 D.E.P. 26.4% $14.41 Others 73.6% 40.19 16" $50 $65 D.E.P. 23% $14.95 Others 77% 50.05 P.F.B. 11/4/86 1 1 1 -16- 1 So. Windsor, EDB 11/17/86 Discussion of Exhibit #9: Flow available at 25 psi Residual Pressure • In response to a request from the town, C.W.C. calculated the flow which would be available at four separate locations. Considerations for those calculations include pressures and available flow at the end of C.W.C. 's existing distribution system, friction losses, pipe size, and elevation of the location. The calculated flows given in the table indicate the maximum available flow at that location if the residual pressure is allowed to drop to 25 psi. For example, the flow available at point Q1, (see Exhibit #1) if the 12" proposal was constructed is calculated to be 1950 gal/min. If this capacity of water was flowing at Q1, then the quantities indicated in the table would not be available at the other locations. The other quantities are mutually exclusive. The value indicated for "Static Pressure" is the pressure that would be found at the locations after the installation of the pressure reducing station (installed at C.W.C. expense). See Exhibit #1 for the locations of Q1, Q2, Q3, and Q4. Exhibits 10, 11, 12, 13, 14. Self-explanatory. 1 1 1 -17- i So. Windsor, EDB Exhibit #9 11/17/86 r Flow available at 25 PSI Residual Pressure (gal/min) Flow at Location: (gal/min) Location Q1 Q2 Q3 Q4 Elevation (USGS) 240' 90, 70' 110 , • C.W.C. 16" Proposal 2000 3300 1700 3000 C.W.C. 12" Proposal 1950 2800 1500 2400 C.W.C. 8" Proposal 1525 1425 1200 1000 6" Pipe Calculation 800 800 575 500 Static Pressure (psi) 51 116 125 107 The location of Q1 is Ridge Road; Q2 is the intersection of Deming and Clark Streets; Q3 is on Clark Street; Q4 is at the intersection of Smith Street and Wheeler Road. See Exhibit #1 for the exact locations. -18- I • • • • • • • a f a u 1 E A S T W 1 N D S LEGEND - •. — _ x. _ _ _ - - {{--" I AREAS OF KNOWN ©• 3 EDB APPLICATION ., 4' LI CATION »'.< Obi LIMIT OF POTENTIAL CONTAMINATION +O +; ••, a �00 a I E L L I N G 7 0 N _.� DIRECTION OF SHALLOW � •'�"" �„ $: _�' GROUND WATER FLOW to t a ' DIRECTION OF DEEP do : GROUND WATER FLOW + j _wA � - ••.. _ o � w� ��. :� oho I Lu .r'°"i. J/ � �• �J4 J it x.° �':::'.::':::+.:. .....::�'':1� ��, a•t � � SV 11 D� _ of . m 4 sty i l 6.� eft uy°y�` i"AN.: ��• `f. / H` S-T ` f l r G A tl t s� I ...~ �' N 3 n.,+, / Environmental sa W°•••*�.f C.I /// 11/\\//�� cu�U6108", ���`/ Consultants,Inc. m�r avas r TOWN OF SOUTH WINDSOR,CONNECTICUT FIGURE 6-1 E A S T " A ' °°° ° °°° °°°' POTENTIAL AREAS OF CONTAMINATION EXHIBIT #10 E A S T W I N D S 0 `R LEGEND 1-45 AREA OF PROPOSED/ PLANNED RESIDENTIAL � 1 DEVELOPMENT 4'�0�� A � °' A—Q AREA OF PROPOSED/ „ ,� y •' v n n 23 I E L L I N G T 0 N 22 I PLANNED COMMERCIAL a, ' U 1 OR INDUSTRIAL Q ; / DEVELOPMENT �yM (Area affected = is shaded) e !/ 13 a�* 32 74 ri; �'/%C QQ 43 25 31 14 A 29 30 K -.135 12 34 '� 40 tu 16 H �Lw w E j/ �� J •O� 'a ♦ Q / 7 •i � O / 3 36 / �� A _ 3 (%J_`=-' f�"` , / 111 \\ c Consultants,Inc. Environmental z 4 eoocnn..,..n..aa�..... _- � E,u wnrwe.Cannc:iu.0610! 45 TOWN OF SOUTH WINDSOR,CONNECTICUT o /,E�/- ------ - - �_ FIGURE 2-3 H A R T F 0 R D E A S T FUTURE DEVELOPMENT AREAS %LL[ EXHIBIT 11 - THE CONNECTICUT WATER COMPANY EXHIBIT *12 Northern Division North Road , Warehouse Point , Connecticut 06088 . Serving East Windsor, Enfield , Stafford , Somers , Suffield , Vernon , Windsor Locks and South Windsor Rate Schedule for Water Service Rendered On and After December 2 Authorized Under DPUC Docket No. 850606 3 � 1985 Quarterly Meter Rates Consumptionjer Quarter - First 4t5UO Gals. or less $30 .87* Next 61 ,500 Gals./1 ,000 Gals 3. Next 834 ,000 Gals./1 ,000 Gals.. 155 2. 155 511 Over 900 ,000 Gals. /1 ,000 Gals. 1 .985 Monthly Meter Rates ' Consumption Per Month First 1,500 Gals. or. less $10.29* r Next . 20 ,500 Gals./1 ,000 Gals. 3. 155 Next 278 ,000 Gals./1 ,000 Gals. 2.511 Over 300 ,000 Gals. /1 ,000 Gals. 1 .511 985 *Minimum rate based on applicable minimum meter charge and applicable minimum water allowance. r . Gallons Allowed Minimum Meter Charge Meter Size Quarterly Monthly Quarterly Monthly 5/8�� 3;411 4 ,500 1,500 500 5 0-0 $ 40 .87 $ 10.2 4 ,500 6 .3115 .44 _ 1n1/2" 4 ,500 -1 ,500 17 .18 25 .73 2" 4 ,500 1,500 5 -35 51 .45 246 .96 82 .32 4" 4 �500 1,500 463 .05 154 .35 1,500 771 .75 257 .25 61 , 4 ,500 1,500 1,543 .50 514 .50 10" 4 ,500 1,500 2,469 .60 1 4 ,500 1,500 823 .20 3 ,550 .05 1, 183 .35 Private Fire Protection Quarterly Rate Private Fire Lines - 4" and under Connection 6" Connection $ 1 5 . 0 each 8" 454 .04 Connection 5 . " 1 10" Connection 709 .44 „ 12" Connection lt021 .59 " Public Fire Protection Monthly Rate Public Fire Hydrants (on all pipelines 6" and larger) $12.95 each Inch-Foot Charge (on all pipelines 6" and larger) $ .005943/in. ft. Multiple Billing Each building having multiple condominium units , each unit of which is occupied by one family as a residence. or one firm as a place of business, which is served through a single service connection and a single meter instead of individual service connections , shall be billed on the multiple ;Zit basis for all consumption within each building with a minimum charge and each consumption block multiplied by the number of condominium units at the applicable rates for each consumption block. Proposed metering and billing of condominium conversions, after the effective date of this tariff shall be submitted to the Department of Public Utility Control for approval. -21- - EXHIBIT ¢13 Form 252-R 12/29/70 Page 1 of 2 pages C.A. No. Customers Refundable Advance Payment Agreement 1. Ph:rties to the Agreement: The following are able and willing to agree : Company: Owner: 2. Life of the Agreement: This Agreement shall extend fifteen (15 ) years from its date of execution. 3. Subject of Agreement: The Company shall acquire, install and provide with r water service the following described utility plant within a-reasonable".time after the execution of this agreement: Place of installation: Town Street(s) Description of plant to be installed: Mains : Diameter, type and length Service connections: Diameter, type and number Other plant: 4. Consideration for Agreement: The Company shall be paid an advance equal to the actual cost (including all special cost factors listed below) of acquiring and installing the required plant, in the following manner: With the execution of the agreement: The estimated cost as determined by the ' Company in the amount of $ ; within fifteen (15 ) days after billing: The actual cost adjusted for prior estimated payments. Any amounts paid in excess of the actual cost will be refunded to the Owner within fifteen (15 ) days after actual cost determination. Costs shall be determined in accordance with the general accounting practice of the Company. Special cost factors: 5. Agreement as to Roadway: Owner agrees to have roadway graded to within six— (b ) inches of finished grade and to have grade and line to street clearly marked prior to pipe installation. Roadways will be suitable for the passage of heavy vehicles and for stringing pipe where practicable. If at an time ,.y prior to acceptance by the Town o� the street in which the pipe shall be laid, grades of the roadway are changed, the Owner shall reimburse the Company the full cost of any adjustments in elevation of the pipe or other plant which may be necessary because of such changes. -22- • Form 252-R .12/29/70 Page 2 of 2 pages Customers Refundable_Advance Layment Agreement b. Limited Service : If property to be supplied by a main extension is at such an elevaetion that, in the opinion of the Company, adequate pressure cannot be furnished at all times, the Owners may be obliged to .execute a limited service . agreement to be recorded in the Land Records of the municipality in which the . property is situated. 'j. Conformance to Company Rules and Regulations: This agreement shall conform to the Rules and Regulations (including main extension regulations ) of the Company now in force and on file with the Public Utilities Commission of the State of Connecticut, which are made a part.hereof. $. .pa Ay agreements as to refunds: A refund of each new metered service connected to the main within fifteen i(1 years ll be made for from the date of execution of this agreement. The combined refunds will notsexceed the amount of the adjusted advance payment. Refunds will be determined yearly on the anniversary date of the agreement. 9. Service to parties other than the original Owners A new customer seeking service from this main extension shall advance his equitable share of the cost of the extension which shall be equitably refunded to the Owner and any other parties who were required to share in the advance. 10. Ownership of plant installed: The main extension and related service connections and ether plant exclusive of the curb box shall be the property of the Company. The curb box shall be the property of the Owner and he shall be liable for its maintenance, its proper grade, and any actions stemaing from it. 11. Obligations of Parties: This Agreement shall bind and inure to the heirs, executors and administrators, successors and assigns of the parties hereto, but neither the sale nor transfer of his property by the Owner, nor any other assignment hereunder shall relieve the Owner of his obligation under this Agreement, unless the written consent of the Company is first obtained. 12. Special Conditions: This Agreement shall be void if not executed before : Executed and delivered at Connecticut, this day of �. 19 Witness: (Two for each signature ) Company ""'—.-- BY -23- - CONNECTICUT WATER SERVICE, INC. C p GENERAL OFFICES: 93 WEST MAIN STREET WJ CLINTON, CONNECTICUT 06413-0562 TEL. 203-669.8636 November 17, 1986 Mr. Richard Sartor Town Manager Town of South Windsor South Windsor Town Hall 1540 Sullivan Avenue 1 South Windsor, CT 06074 Dear Mr. Sartor: In conjunction with the sumbittal of our proposals regarding the EDB groundwater contamination problem in South Windsor, we would like to take this ` opportunity to tell you about ourselves. We want to let you know what we can do working with the people of South Windsor to provide safe drinking water for the problem areas. The Connecticut Water Company is a water utility which now supplies water for a portion of South Windsor as well as residential, commercial, industrial and municipal customers in 30 other Connecticut towns. The Company is the second largest investor-owned water utility in Connecticut operating 790 miles of water main. Total storage capacity of our reservoirs is over six billion gallons. The safe dependable yield from our 45 active wells and 20 reservoirs is 37 million gallons per day. Water sources vary among our operating Divisions, but from the systems as a whole, about 60% of the total dependable yield comes from reservoirs and 40% from wells. Our basic goal is to provide an adequate supply of water meeting all applicable State and Federal standards reliably and at the proper pressure. The Safe Drinking Water Act has mandated the removal of substances from drinking water that only a few years ago were undetectable. We are committed to meeting the standards set forth by the Act and have increased construction expenditures for treatment facilities to be certain the "tools" to do the job are in place. Large numbers and types of samples are taken for laboratory analysis as a part of our comprensive program of monitoring and protection of supplies. 1 The Company has extensive experience in the design, construction, operation and management of: water supply, water treatment and distribution facilities. Our staff includes professional engineers, chemists, construction managers, licensed treatment and distribution operators. This staff of professionals operates systems that include: Wells and reservoirs, treatment plants, transmission systems, pumping facilities, storage tanks, distribution systems, valving and pressure regulating devices. Regular system improvements are made based on a 5-year plan evaluated annually for the systems we operate. Mr. Richard Sartor -2- November 17, 1986 With competent people managing our corporate resources, the Company feels confident °in being able to perform the following services: . Source Management & Protection Additional source of supply development Capital improvement planning & budgeting Drought impact or loss of source planning Emergency supply planning 24-hour service coverage Emergency operations planning Fire flow evaluations Scheduled maintenance Power _failure procedures/standby power coverage Coordinating water planning with regional and state planning agencies Interconnections with other utilities Storage requirement evaluations In house facility design and construction management Good service costs money, but in the long run, poor service costs more. In order to finance the needed construction, a fair rate of return on a sound capital structure is required. As a public service corporation owned by 5,000 ' investors, we expect a fair return, but know that we must justify those earnings with complete dedication to service to our customers. The rates we charge are set by the Connecticut Department of Public Utility Control after formal rate review procedures. A copy of our current rate schedule is included as Exhibit #12. ' Enclosed (as Exhibit 14) is a copy of our 1985 Annual Report for your information. We would be glad to meet with you and other members of the South Windsor town government to discuss our capabilities. Sincerely, Paul F. Breen Engineer CC: R. Deptula - Town Sanitarian w/enc. W.C. Stewart - President W.F. Guillaume - Sr. Vice President - F'r-1!7? Operations & EngineeringK.W. Kells - Vice President - Design &ConstructionR.J. Ulkus - Division Manager R W.L. Dunn - Public Information Officer \o„ TOl'f0 Cf�: �ii�50(