10 · tributary area. these projections come directly from the metropolitan council woodbury system...
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S anitar y S ewer | 10-12030 Comprehensive Plan July 2010
10Sanitary Sewer
Woodbury believes in measured and carefully planned growth that enables the City to welcome new residents and businesses and to improve the quality, capacity and affordability of mu-nicipal services and infrastructure.
Woodbury’s sanitary sewer system is designed to remove sewage from homes and deliver it to the Metropolitan Disposal System, which is owned and operated by Metropolitan Council Environmental Services (MCES). The Metropolitan Disposal System consists of interceptors and wastewater treatment plants and appurtenances to these including lift stations, siphons, valves and tunnels. Woodbury’s sanitary sewer system consists of lateral sewer pipes that serve neighborhoods and businesses, trunk sewer pipes (generally larger than 12-inch diameter) that collect sewage from laterals and lift stations that pump sewage from lower areas of the City.
BackgroundAccording to the Metropolitan Land Planning Act, a Local Comprehensive Plan is to include a sanitary sewer element covering the collection and dis-posal of wastewater generated by the community. Similarly, the Metropolitan Sewer Act requires local governments to submit a Comprehensive Sewer Policy Plan (CSPP) which describes the current and future service needs required from MCES.
In March 2005 the Metropolitan Council adopted a revised 2030 Water Re-sources Management Policy Plan (WRMPP). The 2030 WRMPP includes the metropolitan wastewater system plan with which local comprehensive plans must conform. Woodbury has prepared this sanitary sewer chapter of the Comprehensive Plan to demonstrate its conformance to the regional plan. This chapter updates previous sewer planning efforts and describes in detail the expansion of the City’s sanitary sewer system to serve urban development. This sanitary sewer chapter summarizes Woodbury’s larger Comprehensive Sewer Policy Plan (CSPP) and provides the specific infor-mation needed to meet the 2030 WRMPP requirements.
Chapter Contents
Background.................................... 10-1
Sanitary Sewer and Sustainability ... 10-2 Core Principles .............................................10-2
Forecasts ........................................ 10-3
Sanitary Sewer System ...................... 10-5
Individual Sewage Systems ............. 10-7
Infiltration and Inflow ....................... 10-7
Sanitary Sewer Goals and Policies ... 10-9
Implementation ........................... 10-10Capital Improvement Plan ..................... 10-10Performance Measures ............................ 10-10
Major Policy Changes ..................... 10-10Reserve Capacity ................................... 10-10Rural Estate Areas ................................. 10-10
10-2 | S anitar y S ewer Cit y of Woodbur yJuly 2010
and inflow of clear water occurs due to cracks, leaky joints in pipes and deteriorated manholes within the sanitary sewer collection system. Infiltration and inflow can be reduced through proper maintenance. Although banned by ordinance in Woodbury, clear water inflow can also occur due to direct connection of downspouts and foun-dation drains to the sanitary sewer system.
Limit hazardous substances. Hazardous substances dumped into the sanitary sewer system can result in en-vironmental and human health risks. Various substances can corrode the City’s pipes and cause damage to its lift stations. Public education to citizens and businesses can identify the substances that are inappropriate for the sanitary sewer system and promote the proper disposal of hazardous substances.
Provide for regular assessment and preventative maintenance. Regular assessment of the sanitary sewer system equips the City with the information to make sound decisions on the maintenance and upgrade of the system. An assessment and preventative maintenance plan can outline how to determine assessment priorities (based on age and system parameters), implement as-sessment protocols (surface/visual check into manholes and televised pipe lengths), interpret assessment results to prioritize maintenance activities and determine appro-priate preventative maintenance measures (root control, crack repair, lining, etc.).
Design and construct the system with reserve capac-ity. Decisions made during the design and construction phase of a sanitary sewer system can have long-term implications on the sustainability of the system. The greatest cost efficiency will be realized if sanitary sewer pipes are sized to handle ultimate development condi-tions. It wastes many resources - time, money, materials - to upgrade the system’s capacity solely with respect to pipe diameter. Woodbury plans, designs and constructs its sanitary sewer systems with a system reserve capacity. This reserve capacity provides two benefits:
Woodbury’s residential density guidelines are �flexible so localized higher densities can occur anywhere.
Woodbury’s 2000 CSPP described the expansion of the City’s trunk system through 2020 and the demands this expansion would place on the Metropolitan Disposal System (MDS) operated by MCES. The 2030 CSPP describes these demands 10 years further out to 2030. MCES also uses the CSPP to determine whether capacity upgrades will be needed at the Metropolitan Wastewater Treatment Plant (WWTP) or Eagle Point WWTP.
A map of Woodbury’s existing and proposed sanitary sewer trunk system is presented in Figure 10-1. This map shows MCES interceptors as well and the connection points, existing and proposed, between the City trunk system and that of MCES.
Sanitary Sewer and Sustainability
Woodbury is committed to sustainable growth of the infrastructure system. Woodbury’s view of a sustainable sanitary sewer system means it is both economically sustainable and promotes the preservation of our finite natural resources.
The City of Woodbury partners with MCES to route its sanitary sewage to the Metropolitan and Eagle Point WWTPs. Consequently, the meaning of sustainability with respect to the City’s sanitary sewer system is focused on long-term operation and maintenance of the collec-tion system rather than treatment facility performance. In this context, a sustainable sanitary sewer system is regularly assessed to prevent major issues such as clear water (stormwater and groundwater) inflow and block-age and as a means for planning future investments in rehabilitation and replacement.
Core Principles
Limit volumes into the collection system. All water arriving at the Metropolitan and Eagle Point WWTPs must be treated whether it is sewage or whether it is groundwater and surface water inflow. Since wastewater treatment plants require a substantial amount of energy, treating clear water wastes energy and increases carbon and green house gas emissions. Limiting infiltration and inflow of clear water into the collection system directly reduces energy needs and operation costs. Infiltration
S anitar y S ewer | 10-32030 Comprehensive Plan July 2010
Certain land use categories such as commercial and �industrial (Places to Work) can have widely varying sanitary sewer discharges. The reserve capacity al-lows the City flexibility in considering development and redevelopment proposals.
Stage development. It is most cost effective if the City plans for development to occur in areas with existing sanitary sewer, especially if pipes were sized to accommo-date the additional capacity. In addition, direct energy and financial savings result if developing areas can be connected to the existing system using gravity fed pipe networks. Lift stations are costly capital investments with long-term expenses for maintenance and energy. Consequently, minimizing lift station use is a primary component of sustainability in sanitary sewer systems.
Plan for phased system replacement. The City of Woodbury’s sanitary sewer system is relatively new in terms of sanitary sewer life expectancies. Even though it seems to be a task of the distant future, plans for whole-system replacement should be made now. Devising a phased replacement plan will lessen the certain financial and logistical burden of this infrastructure upkeep.
Partner with MCES. Fostering the relationship be-tween the City and the MCES will result in benefits for both parties. The MCES is willing to partner on public education and improvement projects with cities to en-sure the sustainability of the regional system. Financial and programmatic assistance is available.
ForecastsMetropolitan Council requires municipalities to provide adopted forecasts for population, households and em-ployment in five-year increments to 2030. The forecasts in this chapter are organized by sewage treatment plant tributary area.
These projections come directly from the Metropolitan Council Woodbury System Statement. The City of Woodbury has reviewed and concurs with these projec-tions.
Tables 10-1 and 10-2 provide projected flow volumes by MCES interceptor in 5-year increments out to 2030.
City projections are compared to those of the Metro-politan Council as provided in their system statement for Woodbury.
Tables 10-3 and 10-4 delineates projected flow to each interceptor’s service area. Both City of Woodbury and Metropolitan Council projections are provided. It is assumed that Metropolitan Council projections pertain to Woodbury only.
Meter data and a spreadsheet sewer model were used to determine the projected flows by interceptor for the City (since the City does not determine population projections by interceptor service area). The City of Woodbury’s 2006 sewage flow to the Eagle Point WWTP is based upon MCES metered average flow from meter number M75 on the southern border of the City with Cottage Grove. The City’s 2006 sewage flow to the Metro WWTP is based on metered average flow from meters
Table 10-1: Woodbury Projections for Sewered Areas1 to Metro WWTP
Year Sewered Population
Sewered Households
Sewered Employment
2010 25,572 10,130 11,80020152 25,920 10515 12,3002020 26,268 10,900 12,80020252 26,891 11,182 12,8002030 27,514 11,464 12,800
1 Metropolitan Council’s Water Resources Management Policy Plan (May 2005).2 Values Interpolated
Table 10-2: Woodbury Projections for Sewered Areas1 to Eagle Point WWTP
Year Sewered Population
Sewered Households
Sewered Employment
2010 33,166 12,876 14,15020152 40,199 16,238 17,7752020 47,232 19,600 21,40020252 51,859 21,568 22,8002030 56,486 23,536 24,200
1 Metropolitan Council’s Water Resources Management Policy Plan (May 2005).2 Values Interpolated
10-4 | S anitar y S ewer Cit y of Woodbur yJuly 2010
M017 (after subtracting M021 from Oakdale and flow under Interstate 94 at node W4.1), M019 and M018. Projected flows were determined by applying the ratio of increase in flow from 2006 to 2030 determined in the sewer model to the existing metered flow. Projected flow
to Interceptor 7102 through Newport is based entirely on the sewer model since no meter data is available for this location.
Metropolitan Council’s projected flows for the years 2010, 2020 and 2030 are from its WRMPP (updated 2005). The Met Council’s numbers do not include the flow to Interceptor 7102. CSPP numbers for intermedi-ate years are interpolated based on projected population growth.
Based on a reading of 2006 metering data, Woodbury’s average flow to the Metro WWTP already exceeds Met-ropolitan Council’s 2030 projection even though there are significant undeveloped areas within the Metro WWTP tributary area including sewersheds CL-1, CL-4, CL-8, CL-9, W-3 and W-4 from trunk sanitary sewer map at the back of this report.
The flows presented in Tables10-3 and 10-4 use 2006 metering as the start and then project flows into the future based upon an estimate of 75 gallons/capita/day and 25 gallons/employee/day.
Table 10-5 presents projected sewer flows for the City as a whole.
Table 10-3: Wastewater Flow Projections to the Metro WWTP
Year City Projected Average Flow by Interceptor (MGD)City Projected
Average Flow to the Metro WWTP (MGD)
MCES Projected Average Flow to
the Metro WWTP1 (MGD)
Carver Lake W.O.N.E. Lower Afton 7102(Newport)
20062 1.06 1.14 0.15 0.022 2.372010 1.26 1.3 0.18 0.022 2.76 2.342015 1.26 1.5 0.18 0.022 2.96 --2020 1.26 1.5 0.18 0.022 2.96 2.342025 1.26 1.5 0.18 0.022 2.96 --2030 1.26 1.5 0.18 0.022 2.96 2.36
Ultimate 1.26 1.5 0.18 0.022 2.96 --
1 Metropolitan Council’s Water Resources Management Policy Plan (May 2005).2 Based on meter data
Table 10-4: Wastewater Flow Projections to the Eagle Point WWTP
Year
City Projected Average Flow to the South Washington County Interceptor and Metro WWTP
(MGD)
MCES Projected Average Flow to
the Metro WWTP1 (MGD)
20062 2.192010 2.48 2.822015 3.15 --2020 3.81 42025 4.33 --2030 4.84 4.7
Ultimate 5.22 --
1 Metropolitan Council’s Water Resources Management Policy Plan (May 2005).2 Based on meter data
S anitar y S ewer | 10-52030 Comprehensive Plan July 2010
Sanitary Sewer System
The Trunk Sanitary Sewer Map (Figure 10-1) shows the portions of the City that contribute sewage to the South Washington County Interceptor (SWCI) and the Eagle Point WWTP. The Figure also shows the western portions of the City that contribute sewage to the Met-ropolitan WWTP (Pig’s Eye) via the Carver Lake and WONE Interceptors. Both treatment plants discharge into the Mississippi River.
Figure 10-1 also provides a detailed inventory of exist-ing and proposed facilities including existing and pro-posed trunk pipes, lift stations, forcemains and MCES Interceptors. All existing and future connection points to the Metropolitan Council system are numbered and correspond with Table 10-7, which is located at the end of this section. There are no private or public sewage treatment plants within Woodbury nor are there any waste disposal sites. The Trunk Sanitary Sewer Map also shows the intercommunity connection points, which are highlighted in Table 10-6.
Table 10-8 and 10-9, which are located at the end of this chapter demonstrates the capacity and design flows of existing and proposed trunk pipes. Also included are calculated average flows for each of the individual sew-ersheds shown on the Trunk Sanitary Sewer Map.
Table 10-6: Intercommunity Flows
Location From To
Average Design
Flow (MGD)
Peak Design
Flow (MGD)
W2.3 Oakdale Woodbury 2.501 6.75
C55.1 Woodbury Cottage Grove 2.193 6.13
C58.1 Cottage Grove Woodbury 0.1514 0.59
C56.3 Woodbury Cottage Grove 1.08 3.35
C54.1 Woodbury Cottage Grove 0.097 0.387
CL6.6 Woodbury Maplewood 1.676 4.859
CL8.1 Woodbury Maplewood 0.298 1.07
W4.1 SE Oakdale, Lake Elmo Woodbury 0.193 0.73
W2.2 Woodbury Maplewood 1.332 3.99
LA.5 Woodbury Maplewood 0.275 1.08
NA Woodbury Newport 0.04 0.16
1 2006 metered flow from Met Council meter no. M0212 2006 metered flow from Met Council meter no. M017. Does not include Oakdale or
Lake Elmo flow into W.O.N.E.
Table 10-5: Wastewater Flow Projections City-Wide
Year MCES Projected Average Flow1 (MGD)
City Projected Average Flow
(MGD)
20062 -- 4.562010 5.16 5.24
20153 5.75 6.112020 6.34 6.77
20253 6.7 7.292030 7.06 7.8
Ultimate -- 8.18
1 Metropolitan Council’s Water Resources Management Policy Plan (May 2005).2 Based on metered data
10-6 | S anitar y S ewer Cit y of Woodbur yJuly 2010
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Dale Road Trunk
Gables Lake Trunk
Bailey Lake Trunk
Valle
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Tru
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ranch
North
Tru
nk
Baile
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runk
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Dr
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Wood
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Wood
lan
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Military Rd
Glen Rd
Lake Rd
Valley Creek Rd
Bie
len
be
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49
4
I- 94
Upper A
fton R
d
Woo
db
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Dr
Brookview Rd
Tamarack Rd
Hudson Rd
Bailey Rd
3.35MGDTo CottageGrove
6.13MGD
0.59MGD0.39MGD
To Newport0.16MGD
4.86MGD
1.08MGD
3.99MGD
6.75MGD0.73MGD
1.07MGD
CG-3
C-5
C-13
C-23
C-27
C-8
Newport
W-2
CL-3
CL-6
C-4
V-5
V-1
C-30
C-14
C-33
W-4
C-2
C-39
C-24
C-9
C-49
V-3
CL-9 C-26
C-19
C-57
W-15
C-40
W-7
C-52
C-58
C-50
C-43
V-2
LA-1
CL-10
C-44
CG-1
W-5
C-12
CL-5
C-36
C-53
C-29
C-1
C-20
C-28
V-6
C-48
C-3
C-18
C-17
C-16
C-7
C-22
C-45
C-42
C-38
CL-7
C-55
CL-1
V-4
W-3
W-14
C-46
C-11
C-34
C-41
C-56
C-37
CG-2
W-13
C-47
C-32
C-10
W-11
C-35
C-25
W-8
C-54
W-10
CL-2
C-6
W-12
CL-8
C-51
V-7
C-21
W-1
C-31
CL-4
LA LAKE
BATTLE CREEK LAKE
CARVER LAKE
COLBY LAKE
BAILEY LAKE
POWERS LAKE
CD-P85
MARKGRAFS LAKE
FISH LAKE
WILMES LAKE
WILMES LAKE
RIA LAKE
CL-P6
24"
15"
12"
18"
30"
10" F.M
.
21
"
16'' F.
M.
21
"
15"
15"
24"
15"
15"
18"
30"
12"
12
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24"
12"
18"
15"
18
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15"
12"
18"
12
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12
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24
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15"
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30"
16''
72''
36''
48''
15''
27''
21''
12''
18''33''
42''
54''
10''
24''
30''
15''
12''
24''
21''
48''
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12''
18''
18''
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15'' 10''
12''
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16''
10''
12''
12''
12''
15''
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18''
12''
18''12''
21''
12''
21''
12''
12''
12''
10''
12''
12''
15''
15''
15''
12''
15''
12''
21''
12''
24''
18''
12''
24''
18''
10''12''
18''
10''
12''
15''
24''
10''
15''
16''
15''
12''
W2.3
V5.1
V6.1
V3.1
V4.1
V1.1
V2.1
C7.2
C3.1
C4.1
C9.1
C6.1
C2.2
C2.1
C1.1
W6.1
LA.2
LA.3
LA.1
W8.1
W4.2
W5.2
W1.2
LA.4
LA.5
W2.2
W2.1
W5.4
C35.2
C49.2
C13.1
C19.1
C39.2
C39.3
C45.3
C56.3
C56.2
C56.1
C57.1
C52.1C52.3
C52.2
C55.1
C50.3
C32.2
CL8.1
C17.1
C27.1
C58.1
C53.1
C11.3
C19.3
C19.2
C17.2
C16.1
C12.1
C11.1
C20.2
C10.2
C10.1
C17.3
C23.1
C23.2
C23.4
C23.3
C20.1
C49.1
C50.2
C50.1
C41.1
C40.1
C40.2
C40.3
C45.2
C45.1
C23.5
CL6.6
C26.2
C24.1
C21.1
W14.2
W14.1
CL6.2
CL9.1
CL6.1
CL7.1
CL6.4
W13.2
CL3.1
CL2.1
C30.1
W12.1
W10.1
C54.1
CL1.1
CL4.1
C37.1C35.1 C36.1
C48.1
C48.2
C37.2
C43.1
CL10.1
M75
M021
M017
M019
C5.1
C7.1
W6.2
W5.3
W1.1
W5.1
W4.1
W4.3
C28.1
C32.1
C11.2
W15.1
CL5.1
C26.1
C25.1
CL6.3
CL6.5
W13.1
C30.2
CL10.2
1,500 1,5000
Feet
±k:\31\3107346\cad\gis\projects\Sanitary_051508.mxd
Trunk Sanitary Sewer MapFigure 10-1
Comprehensive Sewer Policy PlanExisting SanitaryGravity Pipe
Forcemain
Trunk SanitaryExisting City Gravity Trunk Pipe
Existing City Trunk Forcemain
Existing MCES Gravity Pipe
Proposed City Forcemain
Proposed City Gravity Pipe
Existing Structures! Manhole
#* Lift Station
") meter
Flow Arrows toDesignate SanitaryDistrict Routing
Unserved Areas
IntercommunityPeak Flow
3.335MGD
Sanitary Districts
Parcels
Water
S anitar y S ewer | 10-72030 Comprehensive Plan July 2010
Individual Sewage SystemsCurrently, approximately 618 individual sewage treat-ment systems (ISTS) operate within the City of Wood-bury. In January 2000, Woodbury turned administrative responsibility for ISTS over to Washington County. The transfer of authority was conducted under the premise that Washington County can more easily keep up-to-date on evolving regulation regarding these systems. Section 17.2 of the Washington County Individual Sewage Treat-ment System Regulations (Ordinance 128) states:
“The owner of an individual sewage treatment system or the owner’s agent shall regularly, but in no case less frequently than every three years, have the tank or tanks pumped. As an alternative, the owner may inspect and measure the accumulations of scum, which includes grease and other floating materials at the top of each septic tank and compartment along with the sludge, which includes the solids denser than water.”
The following is a comparison of Washington County regulations versus those contained in Minnesota Rules 7080.
The Washington County regulations establish a �30 day time frame to correct failing systems which pose an imminent threat to the public health, safety and welfare, whereas Chapter 7080 establishes a 10 month time frame.
The Washington County ordinance establishes a 90 �day time frame for correcting failing systems that do not pose an imminent threat to public health, safety and welfare, whereas there is no time frame listed in Chapter 7080.
The Washington County regulations require perco- �lation tests and four soil borings for proposed sites, while Minnesota Rules 7080 has no such require-ments.
Under the Washington County regulations, a mini- �mum 12-inch rock layer is required, while Minnesota Rules 7080 requires 6 inches.
The Washington County regulations require that �homeowners have tanks pumped every three years
or be inspected, while Chapter 7080 requires a ho-meowner inspection every three years.
Figure 10-2 shows the locations of ISTS within Wood-bury.
Infiltration and Inflow
The Metropolitan Council has instituted its Inflow/Infiltra-tion (I/I) Surcharge Program since Woodbury’s previous plan. The fundamental policy statement summarizing this program is that the Metropolitan Council “will not provide additional capacity within its interceptor system to serve excessive inflow and infiltration.” The Council establishes inflow and infiltration thresholds for each community that uses its system. Communities that exceed this threshold are required to eliminate excess flow within a reasonable time frame. At this time, the Metropolitan Council has not identified Woodbury as a community with observed excess I/I.
Woodbury’s sanitary sewer system is relatively new, and I/I has not been a significant issue to date. Currently, Woodbury generates dry weather flow of approximately 100 gallons of wastewater per capita per day (gcd) to the Metro WWTP and 60 gcd to the Eagle Point WWTP (the higher Metro flow is due to the preponderance of commercial land uses in that area). Recent metering does not show much variability around these values indicating limited I/I even in the spring when higher amounts are common.
The majority of the sanitary sewer system in the City is above the water table, except some trunks installed in the late 1960s and 1970s. All pipes are located in well-drained urban areas. However, the City does have a proactive program directed at identifying and correcting I/I, including the following:
City ordinance prohibits roof and foundation drains �to be connected to the sanitary sewer system. The ordinance states that, “No rain spout or other form of surface drainage, and no foundation drainage or sump pump are allowed to be connected or dis-charged into any sanitary sewer.”
10-8 | S anitar y S ewer Cit y of Woodbur yJuly 2010
S anitar y S ewer | 10-92030 Comprehensive Plan July 2010
Woodbury conducts annual sewer line televising and �makes repairs where problems are indicated. Per the City’s maintenance standards, one tenth of the City’s sewer system is televised each year, totaling approximately 116,000 lineal feet. In the year 2007 alone, 75,000 lineal feet of sewer was televised. All new City facilities are also televised before being placed in service. Additionally, before and after major roadway maintenance projects, sanitary sewer pipe in the project area are televised to ensure that no damage occurred.
The City reviews flows annually as part of its budget �and Capital Improvements Plan (CIP) prepara-tion. Woodbury’s expenditures on controlling I/I take the form of televising and spot repairs with its street major maintenance projects. Typical repairs include manhole ring and casting replacements and pipe repairs. Woodbury’s major expenditure in controlling I/I is its sewer line televising program described above.
Sanitary Sewer Goals and Policies
Risks to public waters and public health occur due to sanitary sewer overflows (SSOs) or when chemicals are introduced into the system. Woodbury’s sanitary sewer system is relatively new so the risk of infiltration and inflow causing SSOs is low. Nonetheless, effective and continuous management and maintenance of the system preserves its capacity and extends its useful life with the effect of conserving both Woodbury’s and Metropolitan Council’s financial resources and preserving Minnesota’s valued public waters.
Woodbury’s sanitary sewer collection system represents a major municipal investment that is supported by util-ity fees paid by Woodbury’s residents and businesses. Woodbury’s goals and policies demonstrate the City’s commitment to maintaining the value of this investment. When sanitary sewer infrastructure is well maintained, there are fewer pipe blockages and sewer backups and there is less clear water inflow into the system thus re-ducing treatment costs. A well-maintained system, such as Woodbury’s, operates without being noticed by the many residents who depend upon it.
The City of Woodbury has seen tremendous growth over the past 20 years – primarily in residential develop-ment. Woodbury has been committed to ensuring that adequate sanitary sewer collection facilities are built to support that development. Woodbury expects to see continued residential growth in the next 20 years. Ad-ditionally, the City’s Comprehensive Plan includes an economic development goal toward providing adequate public utilities for future commercial and industrial de-velopment, and the City regularly examines the status of its infrastructure so that the current and future needs of the City’s businesses are met.
The following principles dictate the operation of Wood-bury’s sanitary sewer system.
Goal: The City of Woodbury operates and main-tains its sanitary sewer system according to best practices.
Policies:
Construct the system to facilitate operation and 1. maintenance and prevent inflow and infiltration.
Maintain a detailed inventory of the sanitary sewer 2. system including an up-to-date electronic map of all pipes, structures and lift stations.
Clean a portion of the sanitary sewer system every 3. year.
Regularly televise the sanitary sewer system to deter-4. mine whether it is performing adequately.
Assess the system with street major maintenance 5. projects and make improvements as needed to limit infiltration and inflow.
Train those responsible for managing the sanitary 6. sewer system and ensure the equipment necessary to properly maintain the system is available.
Maintain an organizational chart of the sewer main-7. tenance department and a job description for each staff member.
Rehabilitate sewers before their deterioration nega-8. tively affects residents or the Metropolitan Disposal System.
10-10 | S anitar y S ewer Cit y of Woodbur yJuly 2010
Maintain a general emergency response plan that 9. pertains to sanitary sewer overflows.
Goal: Woodbury provides sanitary sewer system capacity that allows continued growth of the com-munity.
Policies:
Provide system reserve capacity in all trunk designs 1. so that local occurrences of higher sewage generating uses or higher densities can be accommodated.
Evaluate existing sanitary sewer systems as to their 2. capacity when in-fill development or redevelopment occurs.
Regularly update the CSPP so that the City’s impact 3. on the Metropolitan Disposal System is communi-cated to Metropolitan Council.
Develop and regularly update the sanitary sewer 4. system CIP.
Reserve capacity within the Bailey Lake sewer trunk 5. (see Table 10-7) for connecting rural estate areas in the eventuality that changing conditions require the extension of sewer service to these areas.
Goal: Woodbury provides a cost effective sanitary sewer system that is equitably financed.
Policies:
Prepare for replacement of the sanitary sewer sys-1. tem by incorporating replacement costs into utility billing rates.
Finance the existing system operation and mainte-2. nance through utility billings.
Finance new sanitary sewer trunks for new develop-3. ment through area and connection charges.
Extend laterals to serve developing areas and assess 4. costs to the benefiting properties.
Implementation
Capital Improvement Plan
Table 10-7 presents Woodbury’s Capital Improvement Plan (CIP) for sanitary sewer trunks. The CIP imple-ments the Phasing Plan presented in the Comprehensive Plan’s Land Use chapter. The node designations refer to points on the Trunk Sanitary Sewer Map (see Figure 10-1).
Performance Measures
The City regularly monitors its infrastructure systems to measure the effectiveness and efficiency of the services that are provided to its citizens. Some of the indicators that are used in monitoring and measuring Woodbury’s sanitary sewer system are as follows:
Number of sewer backups reported �
Number of sanitary sewer overflows reported �
Amount of infiltration and inflow surcharge charged �to Woodbury by MCES
Major Policy Changes
Reserve Capacity
The major policy changes represented in Woodbury’s CSPP relate to the system oversizing or reserve capacity concept. The sanitary sewer system as currently planned has a system-wide reserve capacity to accommodate lo-cally higher densities. This reserve capacity is also avail-able to serve commercial and industrial development and redevelopment that might require more sanitary sewer capacity than typically assumed. It is proposed that this reserve capacity be carried forward into this CSPP.
Rural Estate Areas
Another major policy change for the 2030 CSPP is to add reserve capacity to accommodate future connec-tion of rural estate areas of the City to the sanitary sewer system. It should be emphasized that these rural areas are not part of the proposed urban area for the 2030 Land Use Plan. Rather, it is currently proposed to sim-ply oversize the Bailey Lake Trunk sanitary sewer that
S anitar y S ewer | 10-112030 Comprehensive Plan July 2010
Table 10-7: Capital Improvement Program
Year/Phase
Trunk Sanitary Sewer ElementTotal Trunk and Lift
Station Cost ($)PipeLift Station ($)
From To Length Trunk ($)
2008-2010C11.2 C17.1 2,150 2,609,206 2,609,206
MCES Cost Share 769,671 769,671V1.1 C20.4 17,200 1,593,587 3,576,666 5,170,253
Subtotals 8,549,130
2010-2020
Valley Branch North Trunk V4.1 V3.1 2,100 330,216 330,216V3.1 V2.1 3,000 520,338 520,338V2.1 V1.1 2,550 677,126 677,126
Subtotal Valley Branch North Trunk 1,527,680
Bailey Lake TrunkC35.2 C35.1 2,600 829,152 829,152C37.1 C37.2 1,950 449,843 449,843C37.2 C43.1 1,350 438,093 438,093C48.1 C48.2 2,400 321,192 321,192C48.2 C43.1 3,000 429,382 429,382C43.1 C50.1 3,500 1,172,157 1,172,157C49.1 C49.2 3,200 848,480 848,480C49.1 C50.1 2,600 646,094 646,094C50.1 C50.2 1,400 529,117 529,117C50.2 C50.3 2,550 773,692 773,692C50.3 C52.2 1,160 312,359 312,359
Subtotal Bailey Lake Trunk 6,749,560
Portion Dale Road TrunkC40.2 C40.3 2,450 440,559 440,559C40.3 C45.1 3,000 539,510 539,510C45.1 C45.2 1,650 296,730 296,730C45.2 C45.3 1,450 220,446 220,446
Subtotal Portion Dale Road Trunk 1,497,286
StudiesArea Charge Analysis 25,0002040 Comprehensive Sewer Policy Plan Update 100,000MCES Future Northeast Forcemain Alignment Study 210,000Sanitary Sewer Infrastructure Analysis 63,000
Subtotal Studies 398,00Subtotal 2010-2020 10,172,526Subtotal 2008-2020 18,721,656
will run northwest from the South Washington County Interceptor. Woodbury would likely build this sanitary sewer in the near term, and oversizing the sewer would allow the City the flexibility if, in the future, changing conditions prompted the City to serve the rural estate areas with sewer. This proposed policy change does not change the City’s 2030 land use plan but it does add to the costs of the trunk sanitary sewer system proposed for the 2030 area.
10-12 | S anitar y S ewer Cit y of Woodbur yJuly 2010
Table 10-7 (continued): Capital Improvement Program
2020-2030
Valley Branch South TrunkV6.1 V5.1 2,400 377,390 377,390V5.1 C20.1 5,500 307,977 351,000 658,977
Subtotal Valley Branch South Trunk 1,036,367
Portion Dale Road Trunk
C41.1 C40.1 1,200 222,849 222,849C40.1 C40.2 1,200 213,944 213,944
Subtotal Portion Dale Road Trunk 436,793
StudiesArea Charge Analysis 25,0002050 Comprehensive Sewer Policy Plan Update 100,000
Subtotal Studies 125,000Subtotal 2020-2030 1,598,160Subtotal 2008-2030 20,319,817
Urban Reserve (post 2030)
Bailey Lake East TrunkC52.1 C52.2 2,200 245,163 245,163
Subtotal Bailey Lake East Trunk 245,163
Gables Lake TrunkC53.1 C58.1 2,200 215,778 215,778C58.1 C57.1 4,200 549,069 549,069C56.1 C56.2 500 55,719 55,719C57.1 C56.2 2,000 403,934 403,934C56.2 C56.3 600 151,455 151,455C56.3 C.G. 1,650 416,503 416,503
Subtotal Gables Lake Trunk 1,792,457Subtotal Post 2030 2,037,619
GRAND TOTAL 22,357,436
S anitar y S ewer | 10-132030 Comprehensive Plan July 2010
DIST
RICT
NUM
BER
TOTA
L ACR
EAGE
UNDE
VELO
PABL
E/UN
SEW
ERED
PLAT
TED/
PLAN
NED
FUTU
RE M
IXED
RESID
ENTIA
LEX
ISTIN
G AN
D FU
TURE
Open
Spac
eRu
ral E
state
Majo
r ROW
&
NWI*
Mixe
d Res
ident
ialM
edium
Den
sity R
eside
ntial
High
Den
sity R
eside
ntial
Mixe
d Res
ident
ialUr
ban R
eser
veCit
y Cen
ter
Gate
way
High
Den
sity
Resid
entia
lM
edium
Den
sity
Resid
entia
lM
ixed U
se/V
illage
Ce
nter
P/SP
Place
s to S
hop
Place
s to W
ork
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Unit
s)(A
cres)
(Unit
s)(A
cres)
(Unit
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)
W.O
.N.E
. DIS
TRIC
TW
-157
.87
0.545
.376
00
00
5W
-239
2.532
.910
2.721
4.949
90
00
00.1
29.7
6.45.8
W-3
158.3
9.10.4
00
00
00
66.4
1.556
.524
.10.3
W-4
335.2
3.963
.10
09.1
7333
.249
834
.90.8
23.9
166.3
W-5
216.6
60.1
25.4
14.9
270
02.9
4462
.950
.4W
-725
7.850
.50
113.8
295
52.8
296
40.1
420
0.30.3
W-8
104.3
15.6
10.7
41.3
138
00
19.6
294
14.8
11.3
W-1
011
3.415
.10
98.3
181
00
00
W-1
115
3.35.1
13.4
00
00
16.1
242
8.310
8.61.8
W-1
295
.80.7
074
.515
720
.616
50
0W
-13
173.2
102.7
0.439
.382
00
00
5.11.8
23.9
W-1
420
19.4
015
556
00
00
031
.55.1
W-1
533
6.434
.10
66.4
9821
.717
440
.360
594
.33
74.5
2.1Su
btot
al25
9634
60
217
864
104
152
710
9499
110
5716
714
626
7
LOW
ER A
FTON
DIS
TRIC
TLA
-126
033
34.7
104.5
369
00
35.6
534
15.3
15.9
21Su
btot
al26
033
035
105
036
00
00
00
015
1621
CARV
ER LA
KE D
ISTR
ICT
CL-1
180.1
28.8
16.6
00
3.413
1.3CL
-291
.815
.20
02.7
73.9
CL-3
419.2
114.1
9.320
5.355
21.4
0.756
12.2
20.2
CL-4
46.4
19.8
85
18.6
CL-5
233.4
19.4
5.854
.515
156
.945
522
.133
20.4
74.3
CL-6
418.4
118.9
7613
5.721
477
.611
6410
.2CL
-718
7.219
.40
150.9
404
7.311
09.6
CL-8
81.3
0.40
011
.869
.1CL
-930
9.230
.40.1
0.112
1.247
438
.211
108.2
CL-1
031
1.946
.80.1
1.622
4.360
539
.1Su
btot
al2,
279
378
014
590
057
107
120
00
51
014
633
496
VALL
EY B
RANC
H DI
STRI
CTV-
125
7.636
.535
.510
.517
5.1V-
224
5.832
.734
.317
8.8V-
324
3.233
.410
6.512
.391
V-4
139.2
17.9
121.2
0.1V-
530
1.565
.737
.80.2
197.8
V-6
171.3
41.6
20.6
1.110
4.93.1
V-7
60.1
7.219
.232
.41.3
Subt
otal
1,41
910
70
186
00
028
433
50
011
00
447
445T
able
Tbal
e 10
-8: A
reas
For
The
Ful
l-Dev
elop
men
t Sys
tem
10-14 | S anitar y S ewer Cit y of Woodbur yJuly 2010
DIST
RICT
NUM
BER
TOTA
L ACR
EAGE
UNDE
VELO
PABL
E/UN
SEW
ERED
PLAT
TED/
PLAN
NED
FUTU
RE M
IXED
RESID
ENTIA
LEX
ISTIN
G AN
D FU
TURE
Open
Spac
eRu
ral E
state
Majo
r ROW
&
NWI*
Mixe
d Res
ident
ialM
edium
Den
sity R
eside
ntial
High
Den
sity R
eside
ntial
Mixe
d Res
ident
ialUr
ban R
eser
veCit
y Cen
ter
Gate
way
High
Den
sity
Resid
entia
lM
edium
Den
sity
Resid
entia
lM
ixed U
se/V
illage
Ce
nter
P/SP
Place
s to S
hop
Place
s to W
ork
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Unit
s)(A
cres)
(Unit
s)(A
cres)
(Unit
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)
CENT
RAL D
ISTR
ICT
C-1
173.7
14.6
3.30.1
123.7
32C-
227
9.121
.50.6
16.6
3923
.819
00
02.8
86.8
127
C-3
175.2
0.211
5.959
.1C-
430
3.863
.90
045
.536
40
00.1
13.4
37.4
9449
.5C-
548
4.170
.625
3.851
526
.721
40.3
510
3.329
.4C-
665
.417
.738
.572
9.2C-
716
1.65.3
80.6
195
16.7
134
00
7.10.4
51.5
C-8
378.5
106.7
0.618
1.843
523
.919
123
.935
940
.70.9
C-9
243.5
64.1
178.5
324
00
00
0.9C-
1014
0.413
.60.3
50.4
9118
.715
00
037
.220
.2C-
1116
6.259
.510
1.422
20
00
00.3
5C-
1224
6.688
.50.4
156.6
261
00
00
1.1C-
1366
0.216
7.40.9
478.7
882
00
00
0.712
.5C-
1438
4.332
.80.2
321.3
741
00
00
0.70.6
18.7
10C-
1622
0.53.5
0.221
6.451
20
00
00.2
0.2C-
1722
1.245
.112
6.234
70
040
.560
89.4
C-18
221.8
75.7
70.9
105
10.8
8714
.421
636
.613
.4C-
1929
9.611
4.118
5.537
7C-
2022
746
.40.1
153.8
267
00
00
0.222
.24.3
C-21
7029
.90.1
4011
90
00
0C-
2220
4.828
.616
6.630
50
00
09.6
C-23
600.2
167.5
378
886
3427
20
00.2
7.37.1
6.1C-
2435
9.491
.224
1.854
00
00
026
.4C-
2512
0.136
0.483
.719
70
00
0C-
2630
1.298
.60.2
0.720
1.731
80
00
0C-
2759
8.917
1.20.1
337.3
569
00
00
90.3
C-28
224.8
45.5
160.8
361
17.2
138
00
1.3C-
2923
5.937
.50.2
186.7
336
00
00
11.5
0C-
3038
4.845
.21.2
331
839
00
00
7.4C-
3151
.31
50.3
850
00
0C-
3215
0.241
.30.1
108.8
326
00
00
C-33
378.5
19.3
0.220
0.531
50
00
012
3.75.9
23.2
5.7C-
3416
4.40.1
20.2
00
00
132.1
2.39.7
C-35
119.1
0.122
5.321
00
00
43.3
17.5
30.9
C-36
239
133.4
37.8
67.8
C-37
177.5
35.6
0.622
.914
.910
3.5C-
3817
50
138.4
25.5
8.52.6
C-39
401.4
06.4
51.1
241.5
9111
.4C-
4029
2.20.1
47.4
131.2
113.6
C-41
161.4
26.8
134.6
C-42
199.6
0.939
.111
927
.313
.3C-
4326
311
.332
.721
9C-
4417
0.614
0.327
.92.4
C-45
241.7
1.730
.119
8.411
.5C-
4617
3.924
.513
7.312
.1C-
4715
1.260
.819
.40.3
70.7T
able
10-
8: A
reas
For
The
Ful
l-Dev
elop
men
t Sys
tem
(Con
tinue
d)
S anitar y S ewer | 10-152030 Comprehensive Plan July 2010
DIST
RICT
NUM
BER
TOTA
L ACR
EAGE
UNDE
VELO
PABL
E/UN
SEW
ERED
PLAT
TED/
PLAN
NED
FUTU
RE M
IXED
RESID
ENTIA
LEX
ISTIN
G AN
D FU
TURE
Open
Spac
eRu
ral E
state
Majo
r ROW
&
NWI*
Mixe
d Res
ident
ialM
edium
Den
sity R
eside
ntial
High
Den
sity R
eside
ntial
Mixe
d Res
ident
ialUr
ban R
eser
veCit
y Cen
ter
Gate
way
High
Den
sity
Resid
entia
lM
edium
Den
sity
Resid
entia
lM
ixed U
se/V
illage
Ce
nter
P/SP
Place
s to S
hop
Place
s to W
ork
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Unit
s)(A
cres)
(Unit
s)(A
cres)
(Unit
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)(A
cres)
(Acre
s)
C-48
342.8
442
.929
5.9C-
4932
3.60.1
39.3
283.7
0.5C-
5026
5.362
.51.4
32.4
169
C-51
82.6
36.1
27.4
10.9
8.2C-
5227
8.45.6
5.935
.10.1
231.7
C-53
237.1
29.3
020
7.8C-
5410
0.60.3
12.7
87.6
C-55
191.4
36.8
23.9
103.4
27.3
C-56
159.2
20.2
0.113
8.9C-
5729
5.935
.826
0.1C-
5826
8.533
.323
5.2Su
btot
al14
,208
2,19
533
975
35,
104
217
792,
563
1,27
31
01
5082
528
649
376
COTT
AGE G
ROVE
DIS
TRIC
TCG
-124
80
205.5
42.4
0.1CG
-249
.60
40.5
9.1CG
-310
02.4
182
9.513
7.634
.3Su
btot
al1,3
001
1,076
189
00
00
340
00
00
00
0
NEW
PORT
Newp
ort
815.7
49.1
459.6
170.1
136.9
Subt
otal
816
4946
017
00
00
013
70
00
00
00
0
Tota
l22
,877
3,10
91,
874
1,69
46,
972
378
374
2,93
01,
780
9599
2850
139
860
891
1,60
4
Figu
re 1
0-8:
Are
as F
or T
he F
ull-D
evel
opm
ent S
yste
m (C
ontin
ued)
10-16 | S anitar y S ewer Cit y of Woodbur yJuly 2010
Tabl
e 10
-9: E
xist
ing/
Prop
osed
Pip
e Ca
paci
ties F
or T
he F
ull-D
evel
opm
ent S
yste
m
Point
Desig
n Flow
Exist
ing or
Pr
opos
edSiz
eLe
ngth
Upstr
eam
Ele
vatio
nDo
wnstr
eam
Ele
vatio
nSlo
peUp
strea
m G
roun
d Ele
vatio
nDo
wnstr
eam
Gro
und
Eleva
tion
Aver
age C
utCa
pacit
yCa
pacit
yCa
pacit
y/De
sign
Flow
Inlet
Cont
rol
Outle
t Con
trol
From
To
(MGD
)(in
)(ft
)(ft
)(ft
)(%
)(ft
)(ft
)(ft
)(cf
s)(M
GD)
(cfs)
(MGD
)(M
GD)
W.O
.N.E
. DIS
TRIC
TW
15.1
W13
.11.3
677
Exist
ing12
2028
986.2
978.6
0.37
----
--3.7
2.39
2.21.4
11.4
11.0
3W
14.1
W14
.20.4
437
Exist
ing12
1945
1020
.710
100.5
5--
1033
.6--
3.72.3
92.6
1.71
1.71
3.85
W14
.2W
13.1
0.665
5Ex
isting
1211
5110
1099
1.71.5
9--
----
3.72.3
94.5
2.92.3
93.5
9W
13.1
W13
.22.0
83Ex
isting
1537
3897
8.697
2.70.1
6--
----
6.44.1
32.6
1.66
1.66
0.8W
13.2
W5.1
2.645
7Ex
isting
1811
6097
2.497
0.60.1
6--
----
10.1
6.52
4.12.6
72.6
71.0
1W
12.1
W10
.10.3
474
Exist
ing12
1200
974.9
972.9
0.17
----
--3.7
2.39
1.50.9
40.9
42.7
W6.1
W6.2
0.937
7Ex
isting
1215
5097
897
4.60.2
2--
----
3.72.3
91.7
1.08
1.08
1.15
W6.2
W10
.11.0
928
Exist
ing12
953
974.6
972.5
0.22
----
--3.7
2.39
1.71.0
81.0
80.9
9W
10.1
W5.1
1.405
5Ex
isting
1250
197
2.597
10.3
----
--3.7
2.39
1.91.2
61.2
60.9
W5.1
W5.3
3.838
8Ex
isting
2119
9097
0.596
6.40.2
1--
----
14.8
9.56
7.24.6
54.6
51.2
1W
5.2W
5.30.2
496
Exist
ing12
2100
1032
975.8
2.68
----
--3.7
2.39
5.83.7
72.3
99.5
8W
5.3W
5.44.2
131
Exist
ing21
1200
966.3
964.3
0.17
----
--14
.89.5
66.5
4.18
4.18
0.99
W4.1
W5.4
0.598
2Ex
isting
1829
0099
196
4.30.9
2--
----
10.1
6.52
10.1
6.51
6.51
10.88
W5.4
W4.3
4.962
4Ex
isting
2115
2096
495
0.30.9
----
--14
.89.5
615
9.72
9.56
1.93
W4.2
W4.3
0.598
2Ex
isting
1224
0098
1.495
0.71.2
8--
----
3.72.3
94
2.62.3
94
W8.1
W4.3
0.492
5Ex
isting
1233
7010
1296
0.51.5
3--
----
3.72.3
94.4
2.85
2.39
4.85
W4.3
W2.1
6.061
4Ex
isting
2737
2195
0.394
4.30.1
6--
----
27.8
17.96
12.4
8.03
8.03
1.33
W2.3
W2.1
6.75
Exist
ing27
1335
952.4
948.5
0.397
027
.817
.9616
.810
.8810
.881.6
1W
2.1W
2.211
.4293
Exist
ing33
2735
943.9
937.6
0.23
----
--45
.829
.5925
.416
.416
.41.4
3W
1.1W
1.20.1
036
Exist
ing4"
F.M
.40
097
398
1.9--
----
----
----
----
--W
1.2W
2.20.3
634
Exist
ing9
----
----
----
----
----
----
--W
2.2MW
13.58
86Ex
isting
33--
----
----
----
----
----
----
LOW
ER A
FTON
DIS
TRIC
TLA
.1LA
.30.1
65Ex
isting
1282
010
44.9
1035
.31.1
7--
----
3.72.3
93.9
2.49
2.39
14.49
LA.2
LA.3
0.11
Exist
ing12
1140
1037
.510
35.3
0.19
----
--3.7
2.39
1.61.0
11.0
19.1
9LA
.3LA
.40.4
399
Exist
ing12
1100
1035
.310
27.9
0.67
----
--3.7
2.39
2.91.8
91.8
94.2
9LA
.4LA
.50.7
314
Exist
ing18
923
1027
.110
25.8
0.14
----
--10
.16.5
23.9
2.55
2.55
3.48
LA.5
M.W
.1.0
173
Exist
ing15
392
1025
.110
20.6
1.15
----
--6.4
4.13
6.94.4
74.1
34.0
6
CARV
ER LA
KE D
ISTR
ICT
CL10
.1CL
10.2
0.425
7Ex
isting
1215
3595
5.795
20.2
4--
----
3.72.3
91.7
1.13
1.13
2.65
CL10
.2CL
9.10.6
917
Exist
ing12
1325
952
948.9
0.23
----
--3.7
2.39
1.71.1
11.1
11.6
1CL
9.1CL
6.11.1
168
Exist
ing12
1345
948.9
945.2
0.28
----
--3.7
2.39
1.91.2
11.2
11.0
8CL
7.1CL
6.11.0
003
Exist
ing12
1760
986.3
945
2.35
----
--3.7
2.39
5.53.5
32.3
92.3
9CL
6.1CL
6.21.9
74Ex
isting
1511
6194
593
31.0
3--
----
6.44.1
36.6
4.24
4.13
2.09
CL6.2
CL6.3
2.198
Exist
ing18
1373
933
917.1
1.16
----
--10
.16.5
211
.37.3
6.52
2.97
CL6.3
CL6.4
2.198
Exist
ing21
1027
907.9
906.5
0.14
----
--14
.89.5
65.9
3.78
3.78
1.72
CL3.1
CL2.1
0.828
3Ex
isting
1275
210
03.3
1001
.90.1
9--
----
3.72.3
91.5
0.99
0.99
1.2CL
2.1CL
5.11.7
095
Exist
ing15
3080
1001
.496
6.31.1
4--
----
6.44.1
36.9
4.45
4.13
2.42
CL5.1
CL6.4
2.448
6Ex
isting
1532
9596
6.390
71.8
----
--6.4
4.13
8.75.6
4.13
1.69
CL6.4
CL6.5
4.363
1Ex
isting
2448
890
6.290
5.20.2
----
--20
.713
.3710
.26.6
26.6
21.5
2CL
1.1CL
4.10.7
914
Exist
ing12
1625
986.4
976.3
0.62
----
--3.7
2.39
2.81.8
11.8
12.2
9CL
4.1CL
6.50.9
026
Exist
ing12
4100
976.3
905.2
1.73
----
--3.7
2.39
4.73.0
32.3
92.6
5
S anitar y S ewer | 10-172030 Comprehensive Plan July 2010
Tabl
e 10
-9: E
xist
ing/
Prop
osed
Pip
e Ca
paci
ties F
or T
he F
ull-D
evel
opm
ent S
yste
m (C
ontin
ued)
Point
Desig
n Flow
Exist
ing or
Pr
opos
edSiz
eLe
ngth
Upstr
eam
Ele
vatio
nDo
wnstr
eam
Ele
vatio
nSlo
peUp
strea
m G
roun
d Ele
vatio
nDo
wnstr
eam
Gro
und
Eleva
tion
Aver
age C
utCa
pacit
yCa
pacit
yCa
pacit
y/De
sign
Flow
Inlet
Cont
rol
Outle
t Con
trol
From
To
(MGD
)(in
)(ft
)(ft
)(ft
)(%
)(ft
)(ft
)(ft
)(cf
s)(M
GD)
(cfs)
(MGD
)(M
GD)
CL6.5
CL6.6
4.906
5Ex
isting
2411
3990
5.290
30.1
9--
----
20.7
13.37
9.96.4
26.4
21.3
1CL
6.6M
.W.
4.906
5Ex
isting
----
----
----
----
----
----
----
CL8.1
M.W
.1.1
047
Exist
ing--
----
----
----
----
----
----
--
VALL
EY B
RANC
H DI
STRI
CTV4
.1V3
.10.4
704
Prop
osed
1229
0088
6.688
0.10.2
290
890
020
.73.7
2.39
1.71.0
91.0
92.3
2V3
.1V2
.11.3
396
Prop
osed
1812
0088
0.187
8.90.1
900
898
19.5
10.1
6.52
3.32.1
52.1
51.6
V2.1
V1.1
2.248
9Pr
opos
ed24
2800
878.9
876.3
0.09
898
916
29.4
20.7
13.37
74.5
4.52
V1.1
C20.4
3.141
7Ex
isting
16" F
M17
200
920.6
922
--92
8.693
08
----
----
----
V6.1
V5.1
0.600
2Pr
opos
ed12
2400
906
894
0.593
191
020
.53.7
2.39
2.51.6
31.6
32.7
1V5
.1C2
0.11.2
451
Prop
osed
10" F
.M.
5500
894
990
--91
010
0013
----
----
----
CENT
RAL D
ISTR
ICT
C1.1
C2.1
1.349
7Ex
isting
1227
8097
2.791
1.92.1
9--
----
3.72.3
95.3
3.42.3
91.7
7C2
.1C2
.21.3
497
Exist
ing12
967
911.9
907.8
0.42
----
--3.7
2.39
2.31.4
91.4
91.1
1C2
.2C7
.11.8
803
Exist
ing15
2269
907.8
900.4
0.33
----
--6.4
4.13
3.72.4
2.41.2
8C7
.1C6
.12.3
817
Exist
ing18
1286
900.4
899
0.11
----
--10
.16.5
23.5
2.23
2.23
0.94
C6.1
C7.2
2.455
1Ex
isting
1812
2589
989
7.20.1
5--
----
10.1
6.52
42.6
2.61.0
6C7
.2C1
0.22.5
753
Exist
ing21
1820
897.2
895.5
0.09
----
--14
.89.5
64.8
3.13
3.13
1.21
C5.1
C9.1
1.324
5Ex
isting
1260
7097
7.792
1.70.9
2--
----
3.72.3
93.4
2.21
2.21
1.67
C9.1
C10.1
2.101
5Ex
isting
1579
092
1.589
7.43.0
5--
----
6.44.1
311
.37.2
94.1
31.9
7C1
0.1C1
0.22.1
944
Exist
ing18
660
897.4
894.8
0.39
----
--10
.16.5
26.6
4.26
4.26
1.94
C10.2
C11.2
4.359
4Ex
isting
2430
4089
4.488
9.90.1
5--
----
20.7
13.37
8.75.6
25.6
21.2
9C4
.1C3
.11.3
606
Exist
ing15
2975
910.9
903.7
0.24
----
--6.4
4.13
3.22.0
52.0
51.5
1C3
.1C1
1.32.2
298
Exist
ing18
2680
903.5
898.7
0.18
----
--10
.16.5
24.4
2.87
2.87
1.29
C11.3
C11.1
3.166
4Ex
isting
2118
2089
8.589
5.50.1
6--
----
14.8
9.56
6.44.1
64.1
61.3
1C1
3.1C1
2.10.9
179
Exist
ing18
1411
905.2
901.4
0.27
916.1
918.1
13.8
10.1
6.52
5.53.5
43.5
43.8
6C1
2.1C1
1.11.1
544
Exist
ing18
2800
901.4
895.5
0.21
918.1
----
10.1
6.52
4.83.1
13.1
12.7
C11.1
C11.2
6.488
9Ex
isting
2420
0089
5.389
0.90.2
2--
----
20.7
13.37
10.6
6.85
6.85
1.06
C11.2
C17.1
9.725
5Ex
isting
3628
0088
8.688
6.40.0
890
7.192
0.126
.157
36.82
18.7
12.05
12.05
1.24
C17.1
C17.2
9.725
5Ex
isting
3621
5088
6.488
4.40.0
992
0.192
3.736
.557
36.82
20.4
13.21
13.21
1.36
C17.2
C17.3
10.03
79Ex
isting
3614
9088
4.488
3.70.0
5--
----
5736
.8214
.29.2
9.20.9
2C1
7.3C2
3.310
.1222
Exist
ing36
2050
883.7
882.1
0.08
----
--57
36.82
18.6
1212
1.19
C20.1
C20.2
2.282
6Ex
isting
1218
0098
7.491
63.9
710
02.5
938.3
18.7
3.72.3
97.1
4.58
2.39
1.05
C20.2
C19.1
3.490
9Ex
isting
1580
091
690
8.50.9
493
8.393
524
.46.4
4.13
6.34.0
44.0
41.1
6C1
9.1C1
9.23.5
556
Exist
ing24
2400
908.5
899
0.495
093
036
.320
.713
.3714
.29.1
99.1
92.5
9C1
9.2C1
9.34.6
404
Exist
ing24
2725
898.3
884.8
0.5--
----
20.7
13.37
1610
.3110
.312.2
2C1
9.3C2
3.34.6
404
Exist
ing30
760
884.2
882.7
0.21
----
--36
.123
.3218
.612
.0412
.042.6
C23.3
C23.5
13.07
03Ex
isting
4228
0088
2.187
9.40.1
----
--95
61.37
31.8
20.52
20.52
1.57
C27.1
C23.5
1.000
8Ex
isting
1228
0088
6.987
9.40.2
7--
----
3.72.3
91.9
1.21.2
1.19
C23.5
C23.4
13.69
25Ex
isting
4265
087
9.487
80.2
289
6.289
5.817
.395
61.37
46.7
30.16
30.16
2.2C1
6.1C2
3.10.9
636
Exist
ing12
1605
910.3
902.9
0.46
----
--3.7
2.39
2.41.5
61.5
61.6
2C2
3.1C2
3.21.0
26Ex
isting
1510
9590
2.890
10.1
6--
----
6.44.1
32.6
1.69
1.69
1.65
C23.2
C23.4
1.560
6Ex
isting
1514
8590
188
6.30.9
9--
----
6.44.1
36.4
4.15
4.13
2.65
C30.1
C30.2
0.685
2Ex
isting
1238
5496
292
4.80.9
6--
----
3.72.3
93.5
2.26
2.26
3.3
10-18 | S anitar y S ewer Cit y of Woodbur yJuly 2010
Point
Desig
n Flow
Exist
ing or
Pr
opos
edSiz
eLe
ngth
Upstr
eam
Ele
vatio
nDo
wnstr
eam
Ele
vatio
nSlo
peUp
strea
m G
roun
d Ele
vatio
nDo
wnstr
eam
Gro
und
Eleva
tion
Aver
age C
utCa
pacit
yCa
pacit
yCa
pacit
y/De
sign
Flow
Inlet
Cont
rol
Outle
t Con
trol
From
To
(MGD
)(in
)(ft
)(ft
)(ft
)(%
)(ft
)(ft
)(ft
)(cf
s)(M
GD)
(cfs)
(MGD
)(M
GD)
C21.1
C24.1
0.479
4Ex
isting
1222
6495
494
6.50.3
3--
----
3.72.3
92.1
1.33
1.33
2.77
C24.1
C25.1
1.021
3Ex
isting
1218
9694
6.593
9.70.3
6--
----
3.72.3
92.1
1.38
1.38
1.36
C25.1
C30.2
1.190
3Ex
isting
1212
9593
9.792
41.2
1--
----
3.72.3
93.9
2.54
2.39
2.01
C30.2
C26.1
1.801
5Ex
isting
1518
6092
491
7.90.3
2--
----
6.44.1
33.7
2.38
2.38
1.32
C26.1
C26.2
2.000
6Ex
isting
1519
6491
7.991
0.90.3
6--
----
6.44.1
33.9
2.49
2.49
1.25
C26.2
C23.4
2.232
5Ex
isting
1552
1091
0.987
7.10.6
5--
----
6.44.1
35.2
3.36
3.36
1.51
C23.4
C28.1
15.56
64Ex
isting
4828
0087
7.187
1.80.1
989
689
822
.513
0.784
.4362
.340
.2640
.262.5
9C2
8.1C3
9.215
.5664
Exist
ing72
5360
871.8
866.1
0.11
899.1
960
60.6
130.7
84.43
138.5
89.45
84.43
5.42
C39.2
C45.3
15.56
64Ex
isting
7225
0086
6.186
4.40.0
796
092
878
.813
0.784
.4311
1.471
.9771
.974.6
2C4
1.1C4
0.11.0
08Pr
opos
ed15
1200
930.5
928.5
0.17
950
950
20.5
6.44.1
32.6
1.71.7
1.69
C40.1
C40.2
1.265
6Pr
opos
ed18
1200
928.5
926.5
0.17
950
940
17.5
10.1
6.52
4.32.7
72.7
72.1
9C4
0.2C4
0.31.7
482
Prop
osed
1824
5092
6.591
9.50.2
994
093
012
10.1
6.52
5.63.6
33.6
32.0
7C4
0.3C4
5.11.9
672
Prop
osed
1830
0091
9.591
30.2
293
093
013
.810
.16.5
24.9
3.16
3.16
1.61
C45.1
C45.2
2.627
4Pr
opos
ed18
1650
913
908.6
0.27
930
920
14.2
10.1
6.52
5.43.5
3.51.3
3C4
5.2C4
5.33.6
027
Prop
osed
2414
5090
8.690
7.30.0
992
091
5.59.8
20.7
13.37
6.84.3
84.3
81.2
1C4
5.3C5
2.217
.2994
Exist
ing48
3000
907.3
890.5
0.56
915
897.6
7.413
0.784
.4310
7.569
.4469
.444.0
1C5
2.1C5
2.20.8
54Pr
opos
ed12
2200
901.9
890.5
0.52
920
902.3
153.7
2.39
2.61.6
61.6
61.9
4C3
5.2C3
5.10.3
484
Prop
osed
1226
0096
594
10.9
210
0898
543
.53.7
2.39
3.42.2
12.2
16.3
5C3
5.1C3
6.11.2
575
Prop
osed
1832
0094
192
9.90.3
598
594
4.129
.110
.16.5
26.2
44
3.18
C36.1
C37.1
1.330
1Pr
opos
ed18
1600
929.9
922.2
0.48
944.1
935.7
13.9
10.1
6.52
7.34.7
4.73.5
3C3
7.1C3
7.21.4
027
Prop
osed
1821
5092
2.290
9.20.6
935.7
943.9
24.1
10.1
6.52
8.25.2
75.2
73.7
6C3
7.2C4
3.11.4
752
Prop
osed
2117
0090
9.290
60.1
994
3.993
3.231
14.8
9.56
6.94.4
34.4
33.0
1C4
8.1C4
8.20.8
176
Prop
osed
1525
0098
394
01.7
210
0095
516
6.44.1
38.5
5.47
4.13
5.06
C48.2
C43.1
1.223
8Pr
opos
ed15
3000
940
914
0.87
955
935
186.4
4.13
63.8
83.8
83.1
7C4
3.1C5
0.12.8
443
Prop
osed
2435
0090
689
8.90.2
933.2
945
36.7
20.7
13.37
10.2
6.61
6.61
2.32
C49.1
C49.2
0.220
1Pr
opos
ed15
3200
946
912
1.06
996
930
346.4
4.13
6.74.3
4.13
18.78
C49.1
C50.1
1.018
1Pr
opos
ed21
2600
912
905
0.27
930
945
2914
.89.5
68.2
5.32
5.32
5.22
C50.1
C50.2
3.614
9Pr
opos
ed30
1400
898.9
897.3
0.11
945
930
39.4
36.1
23.32
13.6
8.82
8.82
2.44
C50.2
C50.3
3.860
7Pr
opos
ed30
2000
897.3
894.8
0.13
930
920
2936
.123
.3214
.59.3
79.3
72.4
3C5
0.3C5
2.23.9
836
Prop
osed
3011
6089
4.889
0.50.3
792
089
7.616
.136
.123
.3225
16.13
16.13
4.05
C52.2
C55.1
20.55
98Ex
isting
5425
0089
0.588
9.20.0
590
2.392
021
.313
0.784
.4344
.828
.9728
.971.4
1C5
5.1C.G
.20
.7847
Exist
ing54
----
----
----
----
----
----
--C5
4.1C.G
.0.3
397
Prop
osed
----
----
----
----
----
----
----
C53.1
C58.1
0.765
6Pr
opos
ed12
2200
938
917.2
0.95
946
925
7.93.3
2.16
3.52.2
42.1
62.8
2C5
8.1C5
7.11.9
737
Prop
osed
1542
0091
790
10.3
892
592
516
5.83.7
74
2.58
2.58
1.31
C56.1
C56.2
0.473
Prop
osed
1250
089
8.689
7.50.2
291
091
012
3.32.1
61.7
1.08
1.08
2.28
C57.1
C56.2
2.664
5Pr
opos
ed21
2000
899
897
0.192
591
019
.513
.58.7
45
3.24
3.24
1.21
C56.2
C56.3
3.095
7Pr
opos
ed24
600
896.5
896
0.08
910
930
23.8
18.9
12.21
6.54.2
24.2
21.3
6C5
6.3C.G
.3.0
957
Prop
osed
2416
5089
689
4.70.0
893
091
527
.218
.912
.216.3
4.14.1
1.33T
Tabl
e 10
-9: E
xist
ing/
Prop
osed
Pip
e Ca
paci
ties F
or T
he F
ull-D
evel
opm
ent S
yste
m (C
ontin
ued)