HomeMy WebLinkAboutEngineers Report Ext#1 2019-05-07 (v3) TOWN OF LANSING
TOMPKINS COUNTY, NEW YORK
May 1, 2019
ENGINEER'S REPORT
Town of Lansing
Warren Road Sewer District, Extension #1
To Seneca Falls To Auburn
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To Ithaca
" Home of Industry, Agriculture and Scenic Beauty"
PREPARED BY:
T. G. Miller, P.C.
Engineers and Surveyors
Ithaca, New York
1. INTRODUCTION
The New York State Department of Transportation(DOT)is acquiring approximately 15.546 acres of land
from Tompkins County(County) along the west side of Warren Road for the development of a new Sub-
Residency Facility. A portion of Tax Map Parcel 44.-1-47 owned by the County and being conveyed to
DOT is currently within the boundary of the Warren Road Sewer District(WRSD).However,the remainder
of the DOT acquisition, being a portion of Tax Map Parcel 44.4-20.1 is located outside of the WRSD
boundary. On behalf of DOT,the County requested the Town of Lansing Board(Town)form Extension#1
to the WRSD to incorporate the entirety of the new DOT Facility land. The Town also received a request
from the owners of Tax Map Parcel 44.-1-20.2 (Kennedy-Smith) and Tax Map Parcel 44.4-19 (Airport
Storage, LLC) for their lands to be included in Extension#1of the WRSD. One additional parcel of land,
Tax Map Parcel 44.-1-18 (Cornell University) immediately adjoins the WRSD and for practical planning
purposes should be fully included in the the WRSD boundary.All four parcels have frontage along Warren
Road and can obtain access to the WRSD sewer main located on the east side of Warren Road.
To facilitate sanitary sewer service to these parcels the Town Board adopted Resolution 19-65 directing the
Town Engineer to proceed with the preparation of a Map,Plan and Report pursuant to Town Law Sections
209-c and 2019-d relative to a proposed service area to be included in Extension #1 of the WRSD. The
limits of the sewer district boundary and plan for the significant system components are illustrated on Map
2 titled"Proposed Extension#1 and Plan of System to be Constructed". The information presented in this
report fulfills the requirements of Article 12-A, Section 209-c of Town Law and sufficiently describes the
project for public review and comment prior to a public hearing. Following the public hearing a
determination will be made by the Town Board as to whether to proceed with the district formation process.
The Town Board's determination to adopt the district will be subject to a permissive referendum. If the
Board's decision is affirmative,final documentation for the establishment of Extension#1 will be prepared
and submitted to the New York State Comptroller for review and approval, if required.
2. DESCRIPTION OF PROPOSED SERVICE AREA AND ENVIRONMENTAL SETTING
2.1 Service Area Land Use
The general location of the Service Area is depicted on Map 1 titled`Vicinity Map'. The four parcels to be
included in Extension#1 are identified on Map 2. None of the parcels are presently located in Tompkins
County Agriculture District#1. The following table lists the tax map parcel, street address,parcel owners,
use and the acreage for all lands included in the boundary extension.
Parcel No. Address Parcel Owner Use Acreage
P/O 44.-1-18 Warren Road Cornell University Vacant Commercial 0.83
44.-1-19 8 Hillcrest Road Airport Storage,LLC 1 Fam Res/Self Storage 1.12
P/O 44.4-20.1 Warren Road County of Tompkins Vacant Rural 12.55
44.-1-20.2 16 Hillcrest Road Kennedy-Smith,Bill D &Maura 1 Family Residential 2.44
Total Acreage of Parcels= 16.94
Per the Town's Zoning map,all lands within the proposed extension fall within the Industrial/Research(IR)
zone. The larger contiguous vacant parcel owned by the County of Tompkins is proposed to be developed
by the State of New York for a new NYSDOT Sub-Residency Facility.Based on Section 503 of the Town's
Land Use Ordinance, permitted land use activities are generally associated with light manufacturing,
fabrication,assembly or research.Typical residential uses such as one-family,two-family and multi-family
developments are not permitted.
2.2 Population
Based on the 2010 census data obtained from the Tompkins County Planning Department the total
population in the Town of Lansing is 11,033 persons who occupied 4,751 housing units.This data suggests
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an average household size of 2.32 persons. Applying this household size to the existing two single-family
residences would suggest a district population of approximately 5 persons. The NYSDOT Sub-Residency
Facility is expected to employ a maximum of 40 persons. The self-storage facility owned by Airport
Storage,LLC does not currently maintain an on-site office,therefore,no employees are associated with this
use.
A projection of residential population within the extension by the year 2039 is predicted to remain basically
unchanged.The vacant land owned by Cornell University and a portion of the Kennedy-Smith parcel could
support small-scale development for uses consistent with the IR zoning. Between these two parcels, an
additional 10 employees is estimated.
2.3 Topography
In general,the lands adjoining the west side of Warren Road slope gently in a southwesterly direction away
from Warren Road. The ground elevation at the intersection of Warren Road and Hillcrest Road is 1097
feet USGS.At the intersection of Cherry Road and Bush Lane,a distance of roughly 2,000 feet,the ground
elevation is approximately 1041 feet.
2.4 Soil Conditions
The SCS Soil Survey for Tompkins County identifies two principal soil types in the area of the proposed
district extension: Bath/Valois gravelly silt loam and Erie channery silt loam. From a subsurface
investigation completed for the WRSD infrastructure project,competent bedrock can be encountered at 3.5-
7 feet below existing grade along Warren Road.
2.5 Protected Wetlands, Streams and Unique Natural Areas (UNA)
2.5.1 Wetlands
According to the Tompkins County Health Department Mapper there are no State or National Wetland
Inventory identified wetlands within the boundary of the proposed district extension.
2.5.2 Protected Streams
Within or adjacent to the proposed district extension there is one intermittent stream discharging
through the Cornell University and County lands between Warren Road and Cherry Road.The construction
of individual sewer lateral connections to the Town's main along Warren Road will not impact the
intermittent stream.
2.5.3 Unique Natural Areas(UNA)
There are no unique natural areas inventoried by the Tompkins County Environmental Management
Council that adjoin or are partially included within the proposed district boundary.
3. Overview of Method of Operation
The Village of Cayuga Heights Wastewater Treatment Plant(VCHWTP) treats sanitary sewage collected
and conveyed from the existing Cherry Road Sewer District(CRSD) and WRSD. Sewage is conveyed to
the treatment facility by gravity through the Village of Lansing sewage collection and transmission system.
The WRSD discharges into the CRSD collection system at a manhole located on Horizon Drive.
Properties located within the proposed extension will be served by an 8-inch PVC gravity main located on
the east side of Warren Road. However, given that the lands west of Warren Road are generally at a
lower elevation than the road each parcel may require the use of sewage ejection pumps in order
to connect to the main.
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4. Design Considerations
4.1 Initial Design Flow of the WRSD
Hydraulic design of the WRSD collection system,as summarized in the 2008 Engineer's Report,was based
on twelve months of S.C.L.I.W.C. (Bolton Point) consumption data for all water customers within the
WRSD service area. Nearly all of the properties within the WRSD service area were connected to or had
immediate access to the Town's water system at that time. From this data, the initial average day design
flow was estimated to be 19,600 gpd. Accounting for planned growth from active multi-family and
residential subdivision projects,the 20-year future design average day flow was predicted to be 47,000 gpd.
4.2 Future Design Flow of Extension#1
The Consultant for the NYSDOT Sub-Residency Facility (CHA Consulting, Inc.) has estimated that the
total average daily sanitary demand for the proposed facility, inclusive of domestic and vehicle washing
operations, will be 1,900 gpd. Assuming occupancy of the two existing single-family residences will
continue, the average day domestic demand could be 550 gpd (5 persons x 110 gpd). An allowance for
possible IR uses on the Kennedy-Smith and Cornell University lands could generate an additional average
day domestic demand of 250 gpd(10 employees x 25 gpd).In total,the average day demand of the proposed
extension could be 2,700 gpd.
Based on Bolton Point monthly water consumption for April-June 2018 for the WRSD,the current average
daily flow is approximately 27,300 gpd which is still below the estimated future design flow. The WRSD
system has the capacity to include the four additional parcels. All growth in the WRSD sewage flow will
be monitored at the Town's flow metering station on Bush Lane.
4.3 Treatment Facilities
As determined by the Village of Cayuga Heights Engineer in a letter dated March 11, 2019, there is
sufficient hydraulic and waste load capacity in the VCHWTP to accept the proposed additional sewage
loading and no plant modifications will be necessary.
4.4 Waste Load
All sewage is required to be of`domestic quality' in accordance with the Town Local Law Number 1 of
2011,Regulation of Town of Lansing Sewer Districts and Systems.
5. Project Cost
Each landowner will complete and pay for the installation of any mains, manholes, service laterals and
permit fees. To connect to the gravity sewer main, each property owner will be responsible for all cost to
extend a lateral to the Town's sewer main located on the east side of Warren Road. The use of a sewage
grinder pump may be necessary depending on the elevation of the lowest floor or if existing underground
utility conflicts preclude a gravity connection.
6. Debt Repayment of WRSD
The total outstanding debt for the original WRSD project cost is$312,081. The annual installments,which
include repayment of principal and interest, is assessed against each benefited property in the WRSD
regardless of connection status. A principal and interest payment of$20,866 is scheduled for August,2019.
The resulting 2019 WRSD tax rate for a one-family residence, or one Equivalent Dwelling Unit(EDU), is
$86.70 and was assessed to benefitted properties through the Town and County tax bill. Properties within
Extension#1 will be assigned Equivalent Dwelling Units based on the formulae contained in Appendix A
"Definition of Units for Purposes of Warren Road Sewer District Charges"and are summarized for each
parcel below.
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Parcel No. Address Parcel Owner EDU
P/O 44.-1-18 Warren Road Cornell University 0.25*
44.4-19 8 Hillcrest Road Airport Storage,LLC 1.25
P/O 44.4-20.1 Warren Road County of Tompkins 6
44.-1-20.2 16 Hillcrest Road Kennedy-Smith,Bill D &Maura 1
*Current EDU assigned to this parcel in the original WRSD
7. Supplementary Costs
7.1 Treatment,Operation and Maintenance Fees
The Town will levy surcharges to each property in the extension to maintain the WRSD. The fees
summarized below cover all charges by the Village of Lansing and Village of Cayuga Heights for
transportation and treatment of sanitary sewage flows from the WRSD.
A. Vacant parcels will be charged an operation and maintenance annual flat fee of$63.75 which will
be placed on the Town and County Tax Bill.
B. Dwellings that are not hooked up to sewer with water accounts will be billed Operation and
Maintenance annul flat fee. Said fee will be billed by Bolton Point on the quarterly water bills in
the amount of$15.94 per quarter.
C. Dwellings that are hooked up to sewer but do not have water accounts will be billed an annual flat
fee of$255.00 which will be placed on the Town and County Tax bill.
D. Dwellings that are hooked up to sewer that have water accounts will be billed an annual flat fee of
$255.00. Said fee will be billed by Bolton Point on the quarterly water bills in the amount of$63.75
per quarter.
7.2 One-Time Service Connection Costs
Costs associated with connection to the existing sewer system will be the responsibility of the property
owner and in accordance with current building code requirements. The costs associated with the service
connection are estimated below and will vary for each parcel. The costs of a low pressure force main
connection are estimated as follows:
4"PVC sewer lateral from building to grinder pump: 30 feet $1,050
@ $35/foot:
Grinder Pump and wet well assembly and all necessary $7,000
electrical connections for pump power and alarm panel:
2"+/- DR 7 HDPE tubing from grinder pump pit to Right- $1,800
of-Way installed with open trench: 60' +/-feet @$30/foot:
2"+/- DR 7 HDPE tubing from Right-of-way to sewer main $4,000
installed by directional drilling below Warren Road: 80' +/-
feet @$50/foot:
Estimated Total $13,850
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7.3 Building Sewer Permit
For all new sewer connections in the WRSD and extension the Town charges a$1,500 permit fee for single-
family residential. For commercial, industrial, and multi-family parcels, a $3,000 permit fee is charged.
Additional permit charges by the Village of Cayuga Heights and Village of Lansing may apply.
8. Cost of the District to a Typical Property
The Kennedy-Smith parcel(Tax Map Parcel 44.-1-20.2)represents the typical property and the typical one-
family home. The cost of the District to the typical property is the estimated amount that the owner of the
property within Extension#1 will be required to pay for debt service,sewer use,operation,and maintenance
in the first year following the formation of the district.Assuming the typical one-family home is connected
to both Town water and sewer,the annual flat fee of$255 will be charged for sewer use and operation and
maintenance. Together with the proportionate share of the annual debt payment($86.70),the total cost of
Extension#1 to the typical property is $341.70.
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APPENDIX A
DEFINITION OF UNITS
FOR PURPOSES OF
SEWER DISTRICT CHARGES AND
SEWER DISTRICT EXTENSIONS
Single Family House....................................I Unit
Two Family House.......................................2 Units
Multiple Dwellings.......................................I Unit for each dwelling unit.
Mobile Home Park........................................1 Unit for each approved and occupied Mobile Home
0.25 Units per approved vacant space
(as approved by Tompkins Co. Health Dept.)
Commercial Property/Professional Offices............1 Unit for each store or separate place of
business
School—Education,Non-Residential...................1 Unit for each 10 students,faculty and
(Annual update based on enrollment in Sept.) full-time equivalent staff
Group Living Accommodations..........................1 Unit for each 3 beds,based on maximum
(e.g. dormitories or other facilities where groups permitted occupancy
of generally unrelated persons reside)
Motel,Boarding Houses,Bed-n-Breakfasts............1 Unit for the first 3 sleeping rooms. For
the fourth and each subsequent room
0.75 units
Industrial.....................................................I EDU for each 16,000 cubic feet or part
thereof of water consumed annually
using a three year rolling average based
on water meter readings
In Home/On-Premises Occupation with Employees...I Unit for each separate business
Cold Storage Warehouse/No Office......................0.25 Unit
Vacant Land..................................................0.25 Unit
Any use or occupancy which is reasonably susceptible of inclusion in more than one category shall be
deemed to be in the category resulting in the largest number of units. The final determination of the
applicable category shall rest with the Lansing Town Board.
Any uses not specifically defined may be defined by the Lansing Town Board.
Adopted: July 20, 2011
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APPENDIX B
BOUNDARY DESCRIPTION
TOWN OF LANSING WARREN ROAD SEWER DISTRICT,EXTENSION No. 1
All that tract or parcel of land situate in the Town of Lansing, County of Tompkins, State of New York
being bounded and described as follows:
Beginning at a point in the west highway boundary of Warren Road, said point being the northeast corner
of tax map parcel 44.-1-47; thence northwesterly 363+/- feet to a point, said point being the southwest
corner of tax map parcel 44.-1-19; thence north 87 +/- feet along the west line of said parcel to a point;
thence west 130 +/- feet to a point; thence south 130 +/- feet to a point; thence west 50+/- feet to a point;
thence south 305+/-feet to a point;thence north 951+/-feet a point in the north line of tax map parcel 44.-
1-20.1;thence east 498+/-feet to the northwest corner of tax map parcel 44.-1-20.2;thence continuing east
a distance of 445+/- feet along the north line of said tax map parcel the west line of Warren Road; thence
south along the west line of Warren Road a distance of 880+/-feet to the point or place of beginning.
The boundaries of the said District and the Tax Map Parcels included are as shown on Map 2 attached
hereto.
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ENGINEERS AND SURVEYORS MAP 1
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DATA GRAPHIC SCALE SCALE: E19-01
AS SHOWN
WARREN ROAD SEWER DRAWN BY: SHEET
DISTRICT BOUNDARY 0 200 400 0 TRT
CHECKEDD MAP 2