Amendment to the City of Jonestown Wastewater Master Plan of May 2015

Wastewater Service Extension Expansion Narrative

The wastewater service extension project scope (as a modification of the May 2015 Wastewater Master Plan) was for 1,000 LUEs of wastewater service to be provided under the recent City of Jonestown/Leander wholesale service agreement through and to the western side of Jonestown. The primary beneficiaries of this wastewater system would be those businesses and residents directly adjacent to the FM1431 corridor and the Jonestown 300 (a 300 acre tract on the western side of Jonestown.

Of the 1,000 LUEs, 550 were contemplated in the commercial corridor using 1.73 LUEs per acre based upon the current commercial LUE density in Jonestown (with a 25% adjustment factor for centralized sewer system improvements.) Values for commercial development density can be much higher and typically a value of 6 LUEs per acre is used for municipal planning purposes. The remaining 450 LUEs were allotted to the Jonestown 300 tract or the 500 acre tract on the western end of Jonestown. The project scope includes gravity wastewater mains, lift stations and forced mains. Total cost for this scenario is anticipated to be $5,500,000. The City of Jonestown contemplated and approved this amendment of the Plan.

A potential developer then requested and agreed to fund a feasibility investigation contemplating an increase in the service to the Jonestown 300 tract by 500 LUEs. City of Leander staff was informally consulted regarding an increase and service and indicated that there may be a potential to expand the service by 500 LUEs, particularly if Jonestown made provisions for disposal of 500 LUEs of treated effluent. Approval of any contract increase would need to be approved by both city councils.

The proposed wastewater service extension project model was amended to include the additional 500 LUEs. As a result all lift stations were increased in capacity and size and some forced main diameters were increased. No increase in gravity line size was required. The delivery point was moved from the original point west of Travisso Parkway to a location lower in the Leander collection system and into a larger diameter pipe. To accomplish the movement of the delivery point, a bore under Travisso Parkway was added. Additionally, 1,600 LF of existing Leander 12” gravity main would have to be re-graded to accommodate the increased flows.

Lastly, a 6” reclaimed water line would run from the City of Leander to the western end of the Jonestown service area. A pond and 60 acre irrigation area is required to provide for disposal of the additional treated effluent created by the 500 LUE expansion in service. Total cost for this scenario is anticipated to be $9,900,000.

Client: City of Jonestown Job No.: 104-900-10

Project: City of Jonestown Utility Extensions Date Prepared: October 22, 2014

1,000 LUE Wastewater Service from City of Leander to Western Jonestown

Total Cost*

$ 2.00 SF 2,820 SF 5,640.00$ $ 20.00 LF 2,820 LF 56,400.00$ $ 50.00 LF 26 LF 1,300.00$

3.00$ LF 2,794 LF 8,382.00$

$ 2.00 SF 2,100 SF 4,200.00$ $ 40.00 LF 2,100 LF 84,000.00$ $ 3,600.00 EA 5 EA 16,800.00$ $ 25.00 LF 75 LF 1,875.00$

3.00$ LF 1,925 LF 5,775.00$

$ 340,000.00 LS 1 LS 340,000.00$

$ 2.00 LF 2,060 LF 4,120.00$ $ 40.00 LF 1,645 LF 65,800.00$ $ 3,600.00 EA 4 EA 13,160.00$ $ 36.00 LF 2,060 LF 74,160.00$ $ 45.00 LF 175 LF 7,875.00$ $ 50.00 LF 30 LF 1,500.00$

3.00$ LF 2,100 LF 6,300.00$

$ 2.00 LF 2,058 LF 4,116.00$ $ 60.00 LF 2,058 LF 123,480.00$ $ 3,600.00 EA 5 EA 16,464.00$ $ 25.00 LF 65 LF 1,625.00$ $ 50.00 LF 110 LF 5,500.00$

3.00$ LF 1,883 LF 5,649.00$

$ 750,000.00 LS 1 LS 750,000.00$

$ 2.00 LF 8,575 LF 17,150.00$ $ 40.00 LF 2,780 LF 111,200.00$ $ 3,600.00 EA 6 EA 22,240.00$ $ 36.00 LF 5,360 LF 192,960.00$ $ 25.00 LF 1,680 LF 42,000.00$ $ 20.00 LF 1,535 LF 30,700.00$ $ 25.00 LF 256 LF 6,400.00$ $ 50.00 LF 1,083 LF 54,150.00$

Engineer's Opinion of Probable Construction Cost

Texas Registered Engineering Firm F-4780

Segment 3

Segment 2

Segment 4

Gravel Driveway Repair

Unit PriceMaterials or No. of Units

Silt Fencing

Activity

Segment 1

Segment 0

Asphalt Driveway Repair

12" Gravity Main

MH

Lift Station #3 - 635 GPM, 50' deep and 128' head

8" Gravity Main

MH

8" Forced Main

2" LPS

1.5" LPS

Silt Fencing

Silt Fencing

Silt Fencing

Restoration and Revegetation

Gravel Driveway Repair

Asphalt Driveway Repair

Restoration and Revegetation

Restoration and Revegetation

Asphalt Driveway Repair

Silt Fencing

1.5" LPS

Concrete Trench Cap/Slope Plating

Asphalt Driveway Repair

Restoration and Revegetation

8" Forced Main

8" Gravity Main

MH

MH

8" Gravity Main

Lift Station #4 - 550 GPM

Gravel Driveway Repair

JAY ENGINEERING COMPANY, INC. P.O. Box 1220 (512) 259-3882 Leander, TX 78646 Fax 259-8016

Engineers Opinion of Probable Cost Jonestown Wastewater Utility System Project.xlsx Date Printed: 1/21/2016

$ 70.00 LF 462 LF 32,340.00$ $ 45.00 LF 45 LF 2,025.00$ $ 450.00 LF 80 LF 36,000.00$ $ 450.00 LF 200 LF 90,000.00$

3.00$ LF 6,494 LF 19,482.00$

$ 2.00 LF 3,665 LF 7,330.00$ $ 60.00 LF 3,665 LF 219,900.00$ $ 3,600.00 EA 8 EA 29,320.00$ $ 25.00 LF 92 LF 2,300.00$ $ 50.00 LF 215 LF 10,750.00$ $ 45.00 LF 1,809 LF 81,405.00$

3.00$ LF 1,549 LF 4,647.00$

$ 565,000.00 LS 1 LS 565,000.00$

$ 2.00 LF 2,335 LF 4,670.00$ $ 40.00 LF 1,980 LF 79,200.00$ $ 3,600.00 EA 4 EA 15,840.00$ $ 45.00 LF 2,335 LF 105,075.00$ $ 70.00 LF 97 LF 6,790.00$ $ 45.00 LF 50 LF 2,250.00$

3.00$ LF 2,188 LF 6,564.00$

$ 2.00 LF 2,470 LF 4,940.00$ $ 60.00 LF 2,470 LF 148,200.00$ $ 3,600.00 EA 5 EA 19,760.00$ $ 50.00 LF 130 LF 6,500.00$ $ 45.00 LF 50 LF 2,250.00$

3.00$ LF 2,290 LF 6,870.00$

$ 675,000.00 LS 1 LS 675,000.00$

$ 2.00 LF 2,365 LF 4,730.00$ $ 45.00 LF 2,365 LF 106,425.00$ $ 40.00 LF 1,065 LF 42,600.00$ $ 3,600.00 EA 2 EA 8,520.00$ $ 2,200.00 EA 1 EA 2,200.00$ $ 50.00 LF 120 LF 6,000.00$

3.00$ LF 2,245 LF 6,735.00$ Construction Total: 4,443,000.00$

Contingency**: 666,000.00$ Professional Services (Engineering, Surveying, Geotechnical, Inspection, Testing)***: 444,000.00$

Project Total: 5,553,000.00$

Notes:*

** Contingency factor is 15% of construction cost for budgetary purposes.

*** Professional services factor is 10% of construction cost for bugetary purposes.

The above "Opinion of Probable Construction Cost" is made by a professional engineer, not a construction estimator. The accuracy of construction costs cannot be guaranteed.

Restoration and Revegetation

Asphalt Driveway Repair

Concrete Trench Cap/Slope Plating

Restoration and Revegetation

Concete Driveway Repair

Bore Under Tree

Bore Under Road

Project cost does not include ROW acquisition or legal

Segment 5

Gravel Driveway Repair

Asphalt Driveway Repair

Concrete Trench Cap/Slope Plating

Restoration and Revegetation

Connection to Existing Gravity Main

Concete Driveway Repair

12" Gravity Main

Gravity Main

MH

Lift Station #2 - 775 GPM, 35' deep

8" Gravity Main

MH

10" Forced Main

Concrete Trench Cap/Slope Plating

Restoration and Revegetation

Segment 8

Concrete Trench Cap/Slope Plating

Segment 7

Restoration and Revegetation

Segment 6

Asphalt Driveway Repair

MH

Silt Fencing

Silt Fencing

Silt Fencing

Silt Fencing

12" Gravity Main

MH

Lift Station #1 - 890 GPM, 46' deep

10" Forced Main

Engineers Opinion of Probable Cost Jonestown Wastewater Utility System Project.xlsx Date Printed: 1/21/2016

DATE: 04-14-15

REVISED: 11-20-15

8" FM

8

" F

M

8

"

F

M

8" GM

8" GM

8" FM

12" GM

8" GM

8" FM

1.5" LPS

2" LPS

12" GM

8" GM

10" FM

12" GM

10" FM

8" GM

Commercial Corridor

1.5" LPS

Client: City of Jonestown Job No.: 104-900-10

Project: City of Jonestown Wastewater Utility Extension Date Prepared: January 20, 2016

1,500 LUE Wastewater Service from City of Leander to Western Jonestown with Reclaimed Water Line

Total Cost*

$ 2.00 SF 2,820 SF 5,640.00$ $ 20.00 LF 2,820 LF 56,400.00$ $ 50.00 LF 26 LF 1,300.00$

3.00$ LF 2,794 LF 8,382.00$

$ 2.00 SF 2,100 SF 4,200.00$ $ 40.00 LF 2,100 LF 84,000.00$ $ 3,600.00 EA 5 EA 16,800.00$ $ 25.00 LF 75 LF 1,875.00$

3.00$ LF 1,925 LF 5,775.00$

$ 390,000.00 LS 1 LS 390,000.00$

$ 2.00 LF 2,060 LF 4,120.00$ $ 40.00 LF 1,645 LF 65,800.00$ $ 3,600.00 EA 4 EA 13,160.00$ $ 45.00 LF 2,060 LF 92,700.00$ $ 45.00 LF 175 LF 7,875.00$ $ 50.00 LF 30 LF 1,500.00$

3.00$ LF 2,100 LF 6,300.00$

$ 2.00 LF 2,058 LF 4,116.00$ $ 60.00 LF 2,058 LF 123,480.00$ $ 3,600.00 EA 5 EA 16,464.00$ $ 25.00 LF 65 LF 1,625.00$ $ 50.00 LF 110 LF 5,500.00$

3.00$ LF 1,883 LF 5,649.00$

$ 850,000.00 LS 1 LS 850,000.00$

$ 2.00 LF 8,575 LF 17,150.00$ $ 40.00 LF 2,780 LF 111,200.00$ $ 3,600.00 EA 6 EA 22,240.00$ $ 45.00 LF 5,360 LF 241,200.00$ $ 25.00 LF 1,680 LF 42,000.00$ $ 20.00 LF 1,535 LF 30,700.00$ $ 25.00 LF 256 LF 6,400.00$ $ 50.00 LF 1,083 LF 54,150.00$ $ 70.00 LF 462 LF 32,340.00$ $ 45.00 LF 45 LF 2,025.00$ $ 450.00 LF 80 LF 36,000.00$ $ 450.00 LF 200 LF 90,000.00$

3.00$ LF 6,494 LF 19,482.00$

Restoration and Revegetation

Asphalt Driveway Repair

Silt Fencing

1.5" LPS

Concrete Trench Cap/Slope Plating

Asphalt Driveway Repair

Restoration and Revegetation

10" Forced Main

8" Gravity Main

MH

MH

8" Gravity Main

Lift Station #4 - 825 GPM

Gravel Driveway Repair

Silt Fencing

Silt Fencing

Silt Fencing

Restoration and Revegetation

Gravel Driveway Repair

Asphalt Driveway Repair

Restoration and Revegetation

MH

10" Forced Main

2" LPS

1.5" LPS

Activity

Segment 1

Segment 0

Asphalt Driveway Repair

12" Gravity Main

MH

Lift Station #3 - 925 GPM, 50' deep and 128' head

8" Gravity Main

Engineer's Opinion of Probable Construction Cost

Texas Registered Engineering Firm F-4780

Segment 3

Segment 2

Concrete Trench Cap/Slope Plating

Restoration and Revegetation

Segment 4

Concete Driveway Repair

Bore Under Tree

Bore Under Road

Gravel Driveway Repair

Unit PriceMaterials or No.

of Units

Silt Fencing

JAY ENGINEERING COMPANY, INC. P.O. Box 1220 (512) 259-3882 Leander, TX 78646 Fax 259-8016

Engineers Opinion of Probable Cost Jonestown Wastewater Utility System Project Expanded Scope 1-20-16.xlsx Date Printed: 1/21/2016

$ 2.00 LF 3,665 LF 7,330.00$ $ 60.00 LF 3,665 LF 219,900.00$ $ 3,600.00 EA 8 EA 29,320.00$ $ 25.00 LF 92 LF 2,300.00$ $ 50.00 LF 215 LF 10,750.00$ $ 45.00 LF 1,809 LF 81,405.00$

3.00$ LF 1,549 LF 4,647.00$

$ 665,000.00 LS 1 LS 665,000.00$

$ 2.00 LF 2,335 LF 4,670.00$ $ 40.00 LF 1,980 LF 79,200.00$ $ 3,600.00 EA 4 EA 15,840.00$ $ 45.00 LF 2,335 LF 105,075.00$ $ 70.00 LF 97 LF 6,790.00$ $ 45.00 LF 50 LF 2,250.00$

3.00$ LF 2,188 LF 6,564.00$

$ 2.00 LF 2,470 LF 4,940.00$ $ 60.00 LF 2,470 LF 148,200.00$ $ 3,600.00 EA 5 EA 19,760.00$ $ 50.00 LF 130 LF 6,500.00$ $ 45.00 LF 50 LF 2,250.00$

3.00$ LF 2,290 LF 6,870.00$

$ 775,000.00 LS 1 LS 775,000.00$

$ 2.00 LF 2,365 LF 4,730.00$ $ 45.00 LF 2,365 LF 106,425.00$ $ 40.00 LF 1,065 LF 42,600.00$ $ 3,600.00 EA 2 EA 8,520.00$ $ 2,200.00 EA 1 EA 2,200.00$

Bore Under Travisso Parkway $ 450.00 LF 115 LF 51,750.00$ Adjust Grade of 1,600 LF of 12" Gravity Main $ 80.00 LF 1,600 LF 128,000.00$

$ 50.00 LF 120 LF 6,000.00$ 3.00$ LF 2,245 LF 6,735.00$

Reclaimed Water Line6" Reclaimed Water Line $ 27.00 LF 25,233 LF 681,291.00$ Pond $ 1,000,000.00 EA 1 EA 1,000,000.00$ Irrigation System $ 1,200,000.00 LS 1 LS 1,200,000.00$

Construction Total: 7,920,000.00$ Contingency**: 1,188,000.00$

Professional Services (Engineering, Surveying, Geotechnical, Inspection, Testing)***: 792,000.00$ Project Total: 9,900,000.00$

Notes:*

** Contingency factor is 15% of construction cost for budgetary purposes.

*** Professional services factor is 10% of construction cost for bugetary purposes.

The above "Opinion of Probable Construction Cost" is made by a professional engineer, not a construction estimator. The accuracy of construction costs cannot be guaranteed.

Restoration and Revegetation

MH

Silt Fencing

Silt Fencing

Silt Fencing

12" Gravity Main

MH

Lift Station #1 - 1160 GPM, 46' deep

12" Gravity Main

10" Forced Main

Gravity Main

MH

Lift Station #2 - 1035 GPM, 35' deep

8" Gravity Main

MH

10" Forced Main

Concrete Trench Cap/Slope Plating

Restoration and Revegetation

Segment 8

Concrete Trench Cap/Slope Plating

Segment 7

Restoration and Revegetation

Segment 6

Asphalt Driveway Repair

Silt Fencing

Project cost does not include ROW acquisition or legal costs.

Segment 5

Gravel Driveway Repair

Asphalt Driveway Repair

Concrete Trench Cap/Slope Plating

Restoration and Revegetation

Connection to Existing Gravity Main

Concete Driveway Repair

Asphalt Driveway Repair

Engineers Opinion of Probable Cost Jonestown Wastewater Utility System Project Expanded Scope 1-20-16.xlsx Date Printed: 1/21/2016

JA

E

C

O

CITY OF JONESTOWN

DATE: 04-14-15

1160 GPML.S. #1

1035 GPML.S. #2

925 GPML.S. #3

825 GPML.S. #4

REVISED: 01-20-16

8" FM

8

" F

M

8

"

F

M

8" GM

10" FM

12" GM

8" GM

10" FM

1.5" LPS

2" LPS

12" GM

8" GM

10" FM

12" GM

10" FM

8" GM

Commercial Corridor

1.5" LPS

8" GM

Tie In To Exist.

Main @MH