HomeMy WebLinkAboutResolution No. R22-63 - Fail - 4-5RESOLUTION NO.
RESOLUTION OF THE CITY OF LAUREL CITY COUNCIL GRANTING A
VARIANCE FOR GOLDBERG SPORTING ESTATES SUBDIVISION, FIRST
FILING, FOR THE USE OF A LOW-PRFISSURE SEWER SYSTEM
WHEREAS, the Developer of Goldberg Sporting Estates Subdivision, First Filing
(hereinafter "the Development"), is requesting a Variance from the City of Laurel for the use
of a Low -Pressure Sewer System (hereinafter "LPSto collect wastewater within the
Development;
WHEREAS, the proposed scope, effect, and ope ations of the LPSS are fully -described
in the August 31, 2022 Report from KLJ Engineerig, a copy attached hereto and fully
incorporated herein;
WHEREAS, the Developer retained a Design Engineer to analyze the downstream
collection system to determine the effects of the proposed Variance, and the Findings of the
Developer's Design Engineer's Report are attached her�to and fully incorporated herein;
WHEREAS, the Developer has proposed additional benefits to the City of Laurel, as
fully -described in the August 31, 2022 Report from J Engineering, a copy attached hereto
and fully incorporated herein;
- WHEREAS, in order for the Developer to use the LPSS, the City of Laurel is required
to grant a Variance, for the reasons fully -described in he August 31, 2022 Report from KLJ
Engineering, a copy attached hereto and fully incorporated herein;
WHEREAS, the City Council of the City of �aurel may conditionally approve the
installation and use of the LPSS, subject to the conditions recommended and fully -described in
the August 31, 2022 Report from KLJ Engineering, a copy attached hereto and fully -
incorporated herein;
WHEREAS, the City Council of the City of Laurel may conditionally approve the
installation and use of the LPSS, subject to agre ment from the Developer and the
Development's HOA to fully indemnify and hold harn}less the City from any harm resulting
from use of the LPSS; and
WHEREAS, the City Council of the City of I
approval of the installation of the LPSS, and further
interests of the residents of the City of Laurel to allow
fully -described in the August 31, 2022 Report from K
and fully incorporated herein, and an agreement from
HOA to fully indemnify and hold harmless the City fr
LPSS, since:
R22-63 Approve Variance for Goldberg Sporting Estates
rel hereby adopts the conditions for
City Council finds it is in the best
variance, based upon the conditions
Engineering, a copy attached hereto
Developer and the Development's
i any harm resulting from use of the
LPSS
1. allowing the variance in this case rely
specific to the applicant;
2. the current hardship was not created by
3. the variance requested appears to be wi
Laurel Municipal Code; and
4. granting the variance will not injure or
only to a special condition that is
applicant;
the spirit, intent and purpose of the
in an injustice to others.
NOW THEREFORE, BE IT RESOLVED that the Variance for Goldberg Sporting
Estates Subdivision, First Filing, for the use of a low-pressure sewer system is hereby granted,
subject to all of the conditions fully -described in the August 31, 2022 Report from KLJ
Engineering, a copy attached hereto and fully incorporated herein, and an agreement from the
Developer and the Development's HOA to fully inde ify and hold harmless the City from
any harm resulting from use of the LPSS; and
BE IT FURTHER RESOLVED, that the variance is site specific to the Development.
Introduced at a regular meeting of the City Council on the 13th day of September 2022
by Council Member Sparks.
PASSED and APPROVED by the City Council of the City of Laurel, Montana on the
13th day of September 2022.
APPROVED by the Mayor on the 13th day of September 2022.
OF LAUREL
Waggoner, Mayor
ATTEST:
Kelly Strecker, Clerk -Treasurer
Michele L. Braukmann, Civil City Attorney
R22-63 Approve Variance for Goldberg Sporting Estates Subdivision, LPSS
CITY BALL
115 4. rst. St:
PUB WORKS'. 628-4796
.PAVD FAX: 628-2241
WATER OFFICE: 628-7431
NVTR RAX: 628-2289
MAYOR: 628-8456
City sof
PO. Box..10
Laurel, Montana 590
REQUEST FOR CONSID
AGENDA ITEM BY CITY OF LAI
To: City of Laurel
Attn: City Mayor
Civil City Attorney
City Clerk/Treasurer Executive
From: Kurt Markegard
Date: September.
Action Item Being Requested of City Council: Please
from City Council.
Variances From Public Works Standards-
im
Date of Proposed Consideration by City Council:
September 13th Vote.
urel
DEPARTMENT
TION OF
CITY COUNCIL
specify what you are requesting
ee Ryan's report from
a
Checklist of Items in Advance of Submission to City
If applicable, have all meeting minutes and supporting
review and approval?
Yes X No
If applicable, have all Department Heads and relevant pej
item to be placed in front of City Council for considerati
Yes _X_ No
Has the Civil City Attorney reviewed all proposed lel
and/or prepared all relevant documents?
Yes _ No _X
Are all proposed legal documents to be executed by the
to be presented as accepted to City Council?
Yes No ?
If it is a land use issue, has the County approved and
Yes No
Have you received approval from the Mayor for your
all supporting documentation for it?
Yes X No
Have you clearly indicated to City Council the prop
Council?
Yes _X_ No
Have you clearly indicated to the City when you
City Council agenda?
Yes X No
been submitted to the City for
been consulted and approve of this
documents to be executed by the City
signed by opposing parties and ready
all relevant documents?
action item, and have you submitted
action item that you seek from City
hat the proposed action item be put on
Have you clearly indicated to the City if the matter is
Yes No _X
Have all supporting documents intended to be included
with this submission?
Yes _X_ No
Please include/attach all supporting documents,
Affirmation/Declination, Supporting Legal Documents,
Issues for City Attorney and/or City Council Considera
to be set for public hearing?
the City Council packet been included
luding Agenda, Minutes, Voting
Proposed Memoranda on Additional
August 29, 2022
City of Laurel Planning Department
City of Laurel Public Works Department
City of Laurel Council
P.O. Box 10
Laurel, MT 59044
To Whom it May Concern:
The Developer of Goldberg Sporting Estates, First F
development and 15 lot proposed commercial
written petition respectfully requesting allowance
System (LPSS) for collection wastewater within the
comment letter from Planning on January 16, 2
consider a LPSS system until authorized by City Cc
iling, a 73 -lot proposed residential
development, is submitting this
for use of a Low -Pressure Sewer
development. It was noted in the
)20 that "....Public Works cannot
until."
Since that point we have met with the Public Works Director and consultant KLJ two
times to review the system proposed. This has included providing all materials
requested by the Director and coordinating a meeting with the LPSS system
representative (Ben Lewis of Ambiente H2O, Inc. located in Billings) to answer
questions and discuss operation and maintenance of both the on -lot pumps and the
main collection force main proposed in the public rights-of-way. The applicant has
provided manuals and study information to the Public Works Department to develop
a comfort level with the proposed system, which is used in multiple large
developments within the City of Billings, showing it is reliable and sustainable. The
applicant, through the creation of an HOA, has put a structure in place to ensure that
the HOA controls all on -lot components through a direct contract with the system
supplier (Ambiente H2O, Inc.) to ensure continuity and continued maintenance of all
on -lot components. All information has been presented and documented to both the
Planning and Public Works Departments to this point.
Following those discussions it was requested that the applicant complete a study of
the system's potential impacts on the downstream II gravity sewer collection system it
would tie into as well as the Elm Lift Station. A Mplete Elm Lift Station Analysis
memo was completed with numerous iteratio s of review through the City's
consultant KLA. The analysis shows that the 8-inc existing gravity sewer main from
MH 332 to MH 335 will be required to be upgraded to 10 -inch gravity as a result of
the project, which the applicant is agreeing to do as part of the development work at
their cost. Additionally, the analysis shows that by using the LPSS no further upgrades
would be required at the Elm Lift Station. On the contrary, if the LPSS is denied the
Elm Lift Station would be undersized for contributions of the Goldberg Estates
development and neighboring properties if a traditional gravity collection system and
municipal lift station were installed as part of the proposed project. The analysis
shows that those cost can be avoided if a LPSS is approved for use by the Council.
As part of the Elm Lift Station review conside
properties and for allowing connection into the si
and south along Eleanor Roosevelt/East 8th Stre(
planning of the proposed system so as not to isola
potential land uses of those parcels were planne,
density use to be conservative and still show that
the Goldberg Sporting Estates -development
properties the opportunity to develop and conn(
associated documentation was presented in its fir
on August 3, 2022.
*ation was given to neighboring
me LPSS system. Land to the east
t were included in the sizing and
:e any neighboring properties. The
for what could be the maximum
the LPSS system is viable for both
ind still allow the neighboring
ct to the system. That report and
al version to Public Works and KLJ
As noted previously, the HOA will own and maintain, through an annual service term
agreement with Ambiente H2O, the on -lot tank and pumping systems to assure
continuity with the systems and annual maintenance and upkeep. Ambiente installs
a remote monitoring system on each unit installed on lots that alarms them to any
discrepancies in the pump operations or if something has failed so they can
replace/repair immediately. That responsibility will be the sole responsibility of the
HOA which will be established. During the me tings in 2020 the applicant was
notified that any main lines installed in City of Laurel public right-of-way would have
to be owned and operated by the City of Laurel, As such, the system is proposed to
be installed in the road rights-of-way and the main lines, up to lot lines on services,
is proposed to be owned, operated and maintained by the City of Laurel. Should the
City have concerns about that arrangement the DZeloper would happilytake owner,
maintenance, and operation responsibility for those main lines in public right-of-way
and work with the City on whatever agreement
arrangement. At this time it is proposed that th
maintain all force main lines within the public rig
As a result of this proposal the Developer is prop
as it is currently configured and operating. The DE
the gravity sewer main between MH 332 to MH
main. The entire collection and force main systerr
neighboring properties would be installed by
development project as outlined in the informat
Works, and KLJ,
ould be required to facilitate that
City of Laurel own, operate, and
:s -of -way.
using to leave the Elm Lift Station
veloper is committing to upgrade
335 to a 10 -inch diameter gravity
to support the development and
the Developer as part of the
on submitted to Planning, Public
The true benefit of this project to the City of Laurel is that we are avoiding installation
of another public central lift station that would bE owned and operated by the City.
During our initial pre -application meeting in 20 9 the Public Works department
stated that they did not want to have another public lift station installed in this area
to maintain and operate which was the impetus f r proposing the LPSS system. Our
proposal allows the City to put the burden of lift station operation and long-term
maintenance on the lot owners and not the existing residents and rate payers of
Laurel. We've shown thoroughly that this system can work and will allow for growth
and development of neighboring properties as well. The Developer would take
responsibility and ownership of the main force mains and service lines as well if
Public Works or the City is uncomfortable with that responsibility.
The applicant is respectfully requesting acceptan
Laurel City Council as stated was required by t
comment letter, dated January 16, 2020. All s
provided to both agencies, primarily the Public y
KLJ. Any questions or concerns will be happily c
hearing or before/after to assure that all pz
information provided to make an educated decisic
scheduling for hearing of this matter and await yo
e of the proposed system by the
ie Planning Department in their
pporting information has been
orks Department and consultant
iscussed during the City Council
rties are comfortable with the
n. We appreciate your review and
it response.
Feel free to contact PE Project Manager Scott Aspnlieder with any questions or
concerns at (406) 384-0080 or scott@performanc:-ec.com.
Sincerely,
Scott Aspenlieder, PE
Project Manager
MEMO
To:
From:
Date:
Re:
Kurt Markegard, City of Laurel Public Works Dire,
Scott Aspenlieder, PE 15' 4
August 3, 2022
-tor
Goldberg Sporting Estates - Sewer Impact Analysis - Revision 6
This memo is intended to clarify questions raised by the City of Laurel and contract engineer KLJ
during review of the proposed development in consideration of allow a Low -Pressure Sewer System
(LPSS) for the Goldberg Sporting Estates Subdivision. Information presented in this memo is focused
on sewer system impacts only, water system impacts will e considered in a standard design report
during permitting of water infrastructure.
The proposed subdivision includes seventy-three (73)
quadplex multi -family units, and fifteen (15) commercial lot
daycare, gas station, and offices based on market demand
zoning in place, this analysis assumes that every residentia
have a quadplex building for multi -family development tc
the development may have on the existing system. There
manner, nor do some lots have the room to allow for that
this manner at the request for the City of Laurel. Commei
density businesses to account for what could potentially bE
projected businesses are projections only, there is no guar
will be developed out in that manner, by their use for this
The City also requested the existing collection system tc
desired connection point for the LPSS to the existing s�
existing residential lots southwest of the proposed projec
proposed subdivision will contribute to. No flow measurer
system, instead DEQ - Circular 4 guidance was used for d
size the original system. These design flows are conservat
in the existing system.
The City additionally requested that consideration be giv(
(1) commercial lot southeast of the proposed subdivision tl
sewer line that the proposed subdivision will contribute to
been made based off the wastewater design flow rates as c
conservative that City of Laurel guidelines. The assumptic
demand flows for the proposed subdivision are described
esidential lots that are assumed to be
that could range from a healthcare clinic,
3t the time of development. Based on the
lot within the proposed development will
evaluate the maximum potential impact
s no plan to develop the property in that
ype of construction, but it is evaluated in
:ial flows were developed assume higher
included in the property. The commercial
ntee or warrantee implied that the parcel
be evaluated at and downstream of the
stem. As such, there are thirty-two (32)
= area tied into the sewer line(s) that the
ents were taken on the gravity collection
.sign flows that would have been used to
ve in nature and higher than actual flows
n for the five (5) residential lots and one
at may tied into the same existing gravity
;ometime in the future. Assumptions have
,utlined in DEQ - Circular 4, which is more
ns used to determine the base and peak
Below:
General
Notes/Assumptions
1, Lot 1 of Block 1, Lot 1 of Block 5, and Lots 1 & 17 c
sewer demands
2. The Public Park along the north within Block 4 will
Residential Zoning Assumptions:
Block 6 will be used as utility areas. No
used as parkland. No sewer demands.
1. Per Circular DEQ 4 Section 3.1.2B - 100 gpd per person & an average of 2.5 persons per living
unit.
Phase 1 - GSE Residential
1. Assume seventeen (17) quadplex lots equating to Q'8 living units, 2.5 persons per living unit.
Phase 2 - GSE Residential
1. Assume twenty-two (22) quadplex lots equating to; 88 living units, 2.5 persons per living unit.
Phase 3 - GSE Residential
1. Assume thirty-four (34) quadplex lots equating to
Phase 4 Commercial Lots
1. Assume twelve (12) of the 15 lots are office building:
2. Assume 1 of the 15 lots is a health clinic, 25 beds, 16
employee.
3. Assume 1 of the 15 lots is a daycare, 30 kids, 25
employee.
4. Assume 1 of the 15 lots is a gas station, 600 vehic
gpd per employee.
Existing Residential - Locust. Juniper. & Mullberrx
36 living units, 2.5 persons per living unit.
with 20 employees, 13 gpd per employee.
i gpd per bed & 15 employees, 10 gpd per
pd per kid & 20 employees, 15 gpd per
, 10 gpd per vehicle & 15 employees, 12
Assume thirty-two (32) single-family lots equating to 32 living units, 2.5 persons per living unit.
Future Residential - South of E 8th St.
Assume five (5) single-family lots equating to 5 living units, 2.5 persons per living unit.
Existing Commercial - South of E 8th St.
Assume 1 of the 6 lots is an office building with 20 employees, 13 gpd per employee.
The LPSS system proposed includes the use of a 4 -inch for
sewer collection system. The hydraulic capacity of that z
used in the analysis to follow in determining impacts to t
Station to follow. System curve information used to deters
2
ce main connecting to the existing gravity
-inch force main is 88 gpm which will be
he gravity collection system and Elm Lift
nine the capacity of the 4 -inch force main
is attached to this memo. At the request of KLJ the syst
pump represents a flow rate of 1,000 gpm (the potential
modified system analysis is provided in the attachment
require a 4 -inch force main with a hydraulic capacity of f
does result in higher retention times if that flow rate is no
incorporated in the on-site systems. This could lead to an c
but for maximum system impact analysis on the Elm Lift
City of Laurel and KLJ. Additional information was requE
the City of Laurel, particularly around how the system rE
restoration. A full scenario explanation from E/One is pr(
for review.
)m was re -analyzed to assume that every
low rate based on zoning of the lots). The
The analysis shows that the system will
8 gpm, which is used in this analysis. This
reached, and that odor control should be
ver -sizing of the system and is not advised
Station it is included at the behest of the
;ted on the system operation by KLJ and
3ponds during power outages and power
vided as an attachment to this document
Tables 1-7, included in the attachments show the contributing flows from all four phases of the GSE
development; existing neighborhoods on Locust, Juniper, and Mulberry between E 8' St. and East
Main St.; and the existing residential and commercial deve opment which is not publicly sewered but
could be at a time in the future.
Existing Gravity Sewer Analysis
Performance Engineering measured and reviewed the sev er capacity leading up to the Elm Lift
Station. The controlling reach of sewer main was determined to be MH 332 -MH 335 along the alley
between Juniper Ave and Locust Ave. City of Laurel Standards for Public Works Improvements
require all gravity collection lines under 10 -inch diameter �o flow at peak under 50% full pipe.
PROPOSED
97,135 1 67.45 1 0.1503 1 26
EXISTING HOUSES
8,000 I 5.56 1 0.0124 I 22
NEIGHBORING DEVELOPMENT
1,510 1 1.05 1 0.0023
The flows from the existing houses, the neighboring dev
area were considered as if they were conveyed through
station as a worst-case scenario to check capacity. In eitl-
station for GSE, the development would contribute a i
proposed LPSS be approved, due to the 4 -inch diameb
discharge to this existing area would be 77gpm. For capaci
was analyzed below. When combined with the existing fl
that the combined peak hour flow rate is 296 gpm, whic
noted above. This would require the 8 -inch gravity main bE
and upgraded to a 10 -inch gravity main.
3
GOLDBERG
DEVELOPMENT
CONTRIBUTING TO
MH 332 -NIH 335
FUTURE
CONTRIBUTION
?lopment, and the proposed GSE project
Dravity collection or via large regional lift
er a gravity collection or conventional lift
>eak discharge of 270 gpm. Should the
)r force main the maximum capacity for
:y analysis purposes the 270 gpm scenario
)ws from the neighborhood we conclude
� exceeds the 50% capacity requirement
tween MH 332 and MH 335 to be replaced
ELM LIFT STATION ANALYSIS
Existing Flow Rates
In reviewing the design reports provided by the City of Lai
technically undersized per DEQ regulations. The Village Lift
connected to the Elm Lift Station which has a pump ca
Morrison-Maierle reports provided by the City of Laurel.
directly from the Morrison-Maierle report without modifica
that occurred in the excel cells however the Peak Hour Flo
of the projections presented. With that said this memo us
Maierle report as is without modification to minimize conf
the conservative nature of these estimates. The Elm Lift
was upgraded in 2011 with two Gorman -Rupp 600 gpm pu{
gpm pump was installed to replace one of the 2015 Gor
pump in storage as a backup for the lift station. Froi
measurements taken in the field, it appears that the City cr
recommended by Morrison-Maierle along with installing thg
improve the lift station.
TABLE 4-3R
FLOW RATES FOR AREAS TRIBUTARY TO EXISTING
irel the Elm Lift Station pump capacity is
Station has a pump capacity of 300 gpm
,acity of 600 gpm as well based on the
Table 4-3 presented below was pulled
tion. It appears there are rounding errors
is are within 2-3 gpm, within the accuracy
�s the data as presented in the Morrison-
ision and because the data is well within
;tation wet well and ancillary equipment
nps installed in 2015. In 2021 a Homa 600
nan-Rupp pumps, leaving the replaced
n the information provided and pump
gated the storage capacity in the wet well
recommended 600 gpm pumps to fully
LIFT STATIONS
1. Elm and Wage Lfft Station Se'nirce Area populations are taken (roan 12009 €census data. Populations for the
remaining areas are calculated assuming 0.5 acre tats and 2.5 people Or' household.
2. From Table 4-7 in the 2000 Wastewater FacAties. Plan. new consfiuotion is assumed to have no infiltration.
The Village Lift Station and Elm Street Service Area are tw variables that contribute to the capacity
of the Elm Lift Station, which is currently capable of pumping 600 gpm of wastewater. To be clear
the Existing Elm Service Area includes areas west of the tation contributing to the facility above
and beyond the 22 gpm included in the gravity analysis, The 22 gpm flow outlined in the gravity
analysis was pulled only to analyze gravity capacity and is included in the 179 gpm peak outlined in
the Morrison-Maierle data. In an effort to be conservative that 22 gpm is counted in both the
proposed flows and existing data, providing additional opacity buffer. Again, to be conservative
we've used the design flows shown below:
4
Bevel-
Per
Peak
Peak.
Area
Green-
opable
Est.
Capita
Ave.
Ave.
Peaking
Hour
Hour
Ftoav
Area
Space
Area
Pop!
Rate
l3
y
Day
Factor
Flow
Flow
ages}
acres
acres
d
)
fgpmllU1LEt]
m
Elm LS
Service Area
360
177
53,71n
44
4.5
7.65)
1 r.1"7bt
Area North
and East of
and
Tritutary to
Elm LS
235
57
229
1,143
115
1311
91
3.8
494:519
343
Village LS
Sereic.eArea
598
177
105;
74
3.9
415.290
.2e9
Area North
and East of
and
Tributary to
New East. LS
Service Area
1 77
1=5
52
398
115
3a.4.57
25
4.'t
144;467
100
1. Elm and Wage Lfft Station Se'nirce Area populations are taken (roan 12009 €census data. Populations for the
remaining areas are calculated assuming 0.5 acre tats and 2.5 people Or' household.
2. From Table 4-7 in the 2000 Wastewater FacAties. Plan. new consfiuotion is assumed to have no infiltration.
The Village Lift Station and Elm Street Service Area are tw variables that contribute to the capacity
of the Elm Lift Station, which is currently capable of pumping 600 gpm of wastewater. To be clear
the Existing Elm Service Area includes areas west of the tation contributing to the facility above
and beyond the 22 gpm included in the gravity analysis, The 22 gpm flow outlined in the gravity
analysis was pulled only to analyze gravity capacity and is included in the 179 gpm peak outlined in
the Morrison-Maierle data. In an effort to be conservative that 22 gpm is counted in both the
proposed flows and existing data, providing additional opacity buffer. Again, to be conservative
we've used the design flows shown below:
4
Village Lift Station Flows — 300 gpm Existing Elm Service Area Flows — 179 gpm
Proposed Development, Including Existing Flows -296 gpm
Elm Lift Station Data
Based on a review of existing reports and plans, in conjunction with new field measurements, it was
determined that the pumps in the Elm Lift Station are sized to pump at 600 gpm. PE performed field
measurements on February 7, 2022, in coordination with City staff, at which time the cycles for the
facility were times and levels were measured. The field data confirmed that the Elm Station pump
are 600 gpm.
Our Findings
Based on review of the 2009 Laurel Wastewater Facilities Plan Update, Elm and Village Lift Stations
Alternatives Analysis Technical Memorandum, and data initially provided, it appeared that the Elm
Lift Station was operating at or below the design criterlia outlined in DEQ Circular 2. Additional
information provided by Kurt Markegard on November 5, 2021 showed that the pumps had been
replaced in 2015 and then another in 2021, all with 600 gpm capacity. Currently, each pump is capable
of servicing the total peak demand of the flows seen from Village Lift Station and Elm Service Area
when combined.
Scenarios
Scenario 1- Proposed development utilizing LPSS With individual pumps having a 4" force
main discharging to the existing gravity sewer in the Elm Service Area. Includes replacement
of 8 -inch gravity main between MH 332 -MH 335 with 10 -inch gravity main.
5
Scenario 2- Proposed development utilizing gravity sewer and a single large lift station at 300 gpm
discharging to the existing gravity sewer in the Elm Service Area. Includes replacement of 8 -inch
gravity main between MH 332 -MH 335 with 10 -inch gravity main.
Conclusion
Based on the two scenarios visually presented abo,
replacements in 2015 and 2021 to provide 600 gpm cz
Maierle report can support Scenario 1 without modific
well, pumps and ancillary equipment in place and
neighborhoods along with the new GSE development a
East 8th Street. Under this scenario it may be beneficia
with a matching Homa pump as was installed in 2021.
for the facility and extend the useful life of the pumpii
GSE development.
Should the City decide that a conventional lift station
sized to accommodate 300 gpm peak flows, Under Sc
entirety of the Elm Lift Station, wet well and ancillary
replaced to accommodate a design flow of 779 gpm
unnecessary upgrade when flows can be controllE
development area.
0
to the Elm Lift Station, with the pump
pacity as recommended in the Morrison-
ation. That would leave the existing wet
sized properly to service the existing
nd all potential future development along
I to replace the last Gorman -Rupp pump
This would provide matching equipment
ig equipment impacted by the proposed
)e used for the GSE the facility would be
anario 2 you can see it would require the
?quipment included, to be upgraded and
at peak. It is our opinion that this is an
d through a LPSS servicing the GSE
Goldberg Sporting Estates - GSE Demands
Task: Sewer Demands
By: SA
Date: 6/20/2022
D Qit alar 4 mands:
4 PeakD Factor
2.5 Persons/Residential Living Units
100 gpd/Person in Residential Units
165 gpd/Bed in Health Clinic
10 gpd/Employee in a Health Clinic
13 gpd/Employee in an Office
25 gpd/Child in a Daycare
15 gpd/Employee in a Daycare
10 gpd/Vehicle Served
12 gpd/Employee in a Gas Station
Lots 2-71 6 1 4 1 Per Each Lot 1 6,000 1 4.17 1 0.0093 1 16.67
Block 1 Subtotal 1 6,000 1 4.17 1 0.0093 1 16.67
Block 2 Subtotal 1
13,000
1 9.03
1 0.0201 1
36.11
Block 3
Lots 1-30
30
4
Per Each Lot 1
30.000
1 20.83
1 0.0464 1
83.33
Block 3 Subtotal
30,000
1 20.83
1 0.0464
83.33
Block 4
Lots 1-20
20
4
Per Each Lot
20,000
13.89
0.0309
55.56
Block 4 Subtotal
20,000
13.89
0.0309
55.56
Block 5
Lots -2-51
Per-Eac-M-Lot
4;00
-000l}
-
Block 5 Subtotal
4,000
2.78
0.0062
11.11
Lot Total
73
Total
73,000
50.69
0.1129
202.78
mU7,7777-7717,777
e7777
'
77
a
v� i
VZO
NO 6f
ResldenUal
No of
a
Na a%Beds Cn
F,
No of
No of
Yehtciesh. "
f
'z
t �..
Lots
,
Living,t)pits
l?lnpI
Cllrtic;
j, "ChildidP
Total Base Total Base Total Base ToW>Pe
`Demanii">.(yPd) Demand,("
.,.
Z�No of
�Healt[t
�SeNed • 1
Pm).
Demand ,.fcis)
Demand
Block 6
Office: Lots 2-13
12
20
3.120
2.17
0.0048
8.67
Clinic: Lot 14
1
15
25
4.275
2.97
0.0066
11.88
Daycare: Lot 15
1
20
30
1,050
0.73
0.0016
2.92
Gas Station: Lot 16
1
1
1 15
1
1
1 600 1
6.180
1 4.29
1 0.0096 1
17.17
Block 6 Subtotal
14,625
1 10.16
1 0.0226 1
40.63
Lot Total 15
Total 1
14,625
1 10.16
1 0.0226 1
40.63
Goldberg Sporting Estates - Phase 1
Task: Sewer Demands, Phase 1
By: SA
Date: 6/20/2022
DEQ Circular 4 Demands:
4 Peak Factor
2.5 Persons/Residential Living Units
100 gpd/Person in Residential Units
Block 1
Lots 2-7I
6
I 4
I Per Each Lot I
6,000
4.17
I 0.0093
I 16.67
Block 1 Subtotal
6,000
4.17
0.0093
16.67
Block 2
Lots 1-6
6
1 4
1 Per Each Lot
6,000
4.17
0.0093
16.67
Block 2 Subtotal
6,000
4.17
0.0093f::jF667
Block 3
Lots 1-2
2
1 4
1 Per Each Lot
2,000
1.39
0.0031
5.56
Block 3 Subtotal
2,000
1.39
0.0031
5.56
Block 4
Lots 1-2
2
1 4
1 Per Each Lot
2.000
1.39
0.0031
5.56
Block 4 Subtotal
2,000
1.39
0.0031
5.56
Block 5
Lot 2
1
1 4
1 Per Each Lot
_1,0_02__
O 69
0.00.15—
278
Block 5 Subtotal
1,000
0.69
0.0015
2.78
Lot Total
17
Phase 1 Total
17,000
11.81
0.0263
47.22
Goldberg Sporting Estates - Phase 2
Task: Sewer Demands, Phase 2
By: SA
Date: 6/20/2022
DEQ Circular 4 Demands -
4 Peak Factor
2.5 Persons/Residential Living Units
100 gpd/Person in Residential Units
Estimated°Usage
3g
_,
Total Base Totat
Base :
Total Sase
'Total Peak;
h5
Demand Demand
Demand Demantl
No
ReM
of Lots..
..._ Np,` Ontiat,Civmg.Units , ',.
,(9Rm).,,
Block 2
Lots 7-13
7
1 4 Per Each Lot 1
7,000 1
4.86
1 0.0108 1
19.44
Block 2 Subtotal
7,000
4.86
0.0108
19.44
Block 3
Lots 3-15
13
1 4
Per Each Lot
13,000
9.03
0.0201
36.11
Block 3 Subtotal
13,000
9.03
0.0201
36.11
Block 4
Lots 2-3
2 1
4
1 Per Each Lot
2,000
1.39
0.0031
5.56
Block 4 Subtotal
2,000
1.39
0.0031
5.56
Lot Total
22 Phase 2 Total
22,000
15.28
0.0340
61.11
Goldberg Sporting Estates - Phase 3
Task: Sewer Demands, Phase 3
By: SA
Date: 6/20/2022
DEQ Circular 4 Demands:
4 Peak Factor
2.5 Persons/Residential Living Units
100 gpd/Person in Residential Units
hEstimated
usage f'--� Total Base Totai Base
,Total Base � Total Peak
Demand Demand
•.
xDemand 'Demand
No of Lots
' # Moi of Reslidentilal Erving- _nits
,
.,.
Block 3
Lots 16-30
15
4
Per Each Lot 15,000 10.42
0.0232 41.67
Block 3 Subtotal 15,000 10.42
0.0232 41.67
Block 4
Lots 5-20
16
4
Per Each Lot 16,000 11.11
0.0248 44.44
Block 4 Subtotal 16,000 11.11
0.0248 44.44
Block 5
Lot 3-5
3
1 4
Per Each Lot 3,000 2.08
0.0046 8.33
Block 5 Subtotal 3,000 2.08
0.0046 8.33
Lot Total 1 34 Phase 3 Total 34,000 23.61
0.0526 94.44
Goldberg Sporting Estates - Phase 4
Task: Sewer Demands. Phase 4
By: SA
Date: 6/20/2022
DEQ Circular 4 Demands:
4 Peak Factor
165 gpd/Bed in Health Clinic
10 gpd/Employee in a Health Clinic
13 gpd/Employee in an Office
25 gpd/Child in a Daycare
15 gpd/Employee in a Daycare
10 gpd/Vehicle Served
12 gpd/Employee in a Gas Station
WKI ft
No.-of,Residentia
iitiatedUsage'a
tn:,
r,,..,$ �,
Total Base
Total Base
otaLBase
„Total Peat%
etl
No
Whit es,,,?,'
ofDe
aadr
�a m*artdPeritan°tl'
j
���.�.. �:..-,.
;.No. ofr.L,ots;
' L�v�ng.Untts ;� , .. EmRioyee5�
^�Healt#�Cit�►�C <,,:�
Ch�tdren ,
.• . ' 5erveils� �
?, <9pd>�°
a�;,:{gpm).
.. � �cfs>�':.
„ tlpm)w'
Block 6
Office: Lots 2-13
12
20
3,120
2.17
0.0048
8.67
Clinic: Lot 14
1
15,
25
4,275
2.97
0.0066
11.88
Daycare: Lot 15
1
20
30
1,050
0.73
0.0016
2.92
Gas Station: Lot 16
1
15
600
6,180
4.29
0.0096
17.17
Block 6 Subtotal
14,625
10.16
0.0226
40.63
Lot Total 1s Total
14,625
10.16
0.0226
40.63
Goldberg Sporting Estates - Existing Houses
Task: Sewer Demands, Existing Houses
By: SA
Date: 6/20/2022
DEQ Circular 4 Demands:
4 Peak Factor
2.5 Persons/Residential Living Units
100 gpd/Person in Residential Units
�- � �� � - �
��i:� ��
� � � 'Estifnated U"sage
Total Base
Total ease;
Totdi Base
-"Total Peaky
.: � � ;
�� _ �
Demand
Demartd
Demand �
Demand ..
:- -
No, of't ots.
'. .; :No: of Residential.Living Units,
,,...
"(g Pd)
:(9Pm) -
(cfs)
(9Pm)'.:
MH 333 -MH 334
10
Mulberry Ave Lot 702
1
1
Per Each Lot
250
0.17
0.0004
0.69
Mulberry Ave Lot 706
1
1
Per Each Lot
250
0.17
0.0004
0.69
Mulberry Ave Lot 708
1
1
Per Each Lot
250
0.17
0.0004
0.69
Mulberry Ave Lot 1612
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 703
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 707
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 711
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 715
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 719
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 16021
1
1 1
Per Each Lot
250
1 0.17
0.0004
0.69
Block 1 Subtotal
2,500
1.74
0.0039
6.94
MH 331 -MH 332
12
Locust Ave Lot 702
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 706
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 710
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 714
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 718
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 722
1
1
Per Each Lot
250
0.17
0.0004
0.69
Juniper Ave -Lot --7073
1
1
er-Each-Let
Per Each Lot
50
250
0..-17
0.17
0.0004
0.0004
0:69
0.69
Juniper Ave Lot 707
1
1
Juniper Ave Lot 711
1
1
Per Each Lot
250
0.17
0.0004
0.69
Juniper Ave Lot 715
1
1
Per Each Lot
250
0.17
0.0004
0.69
Juniper Ave Lot 719
1
1
Per Each Lot
250
0.17
0.0004
0.69
Juniper Ave Lot 7231
1
1 1
Per Each Lot
250
0.17
0.0004
0.69
Block 2 Subtotal
3,000
2.08
0.0046
8.33
MH 332 -MH 335
10
Juniper Ave Lot 519
1
1
Per Each Lot
250
0.17
0.0004
0.69
Juniper Ave Lot 523
1
1
Per Each Lot
250
0.17
0.0004
0.69
Juniper Ave Lot 605
1
1
Per Each Lot
250
0.17
0.0004
0.69
Juniper Ave Lot 615
1
1
Per Each Lot
250
0.17
0.0004
0.69
Juniper Ave Lot 619
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 616
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 618
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 622
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 628
1
1
Per Each Lot
250
0.17
0.0004
0.69
Locust Ave Lot 1515
1
1
Per Each Lot
250
0.17
0.0004
0.69
Block 3 Subtotal
2,500
1.74
0.0039
6.94
Lot Total 32 Total
8,000
5.56
0.0124
22.22
Goldberg Sporting Estates - Neighboring Contributions
Task: Sewer Demands, Neighboring Development Connections
By: SA
Date: 6/20/2022
DEQ Circular 4 Demands:
4 Peak Factor
2.5 Persons/Residential Living Units
100 gpd/Person in Residential Units
13 gpd/Employee in an Office
x , E - `
`e Estirttafed Usage `
T°tal• Base
Tatat: 'Total Base Totai;Peati,
. w�Isi,Q,..£ ...- x .
No. of Lats
� No°,,of,¢esstdenLiving Units
Demand
.;tat
-:<. BdSe Demand..tlemand
EAST 8TH ST. MAIN ST
5
E 8th St Lot D02662
1
1
Per Each Lot
250
0.17 0.0004 0.69
E 8th St Lot D02661
1
1
Per Each Lot
250
0.17 0.0004 0.69
E Main St Lot D02660
1
1
Per Each Lot
250
0.17 0.0004 0.69
E 8th St Lot 801692
1
1
Per Each Lot
250
0.17 0.0004 0.69
E 8th St Lot B016901
1
1
Per Each Lot
250
0.17 0.0004 0.69
Block 1 Subtotal
1,250
0.87 0.0019 3.47
Lot Total
5
Total
1,250
0.87 0.0019 3.47
Estim iteii U3a9e• ` X
Totat
No ofN6�7°f
Q
Total Base
Ase, Total Peak
i2esidenpe5
No O# No Cf #eds in; No .of
lYehiCtes
Demand
Demand `Demattd3 Demand,
Lnring Umts,
,.
Employees Health Clm�c Ch�Filren
? � W,
MO. of.Lots
.'
E 8TH ST
Office: Lot D02662A
1
20
260 1
0.18 0.0004 0.72
Block 6 Subtotal
260
0.18 0.0004 1 0.72
Phase 4 Total
1 1,510
1.05 0.0023 1 4.19
Goldberg Sporting Estates - Full Contribution
Task: Sewer Demands Summary
By: SA
Date: 6/20/2022
DEQ Circular 4 Demands
4 Peak Factor
2.5 Persons/Residential Living Units
100 gpd/Person in Residential Units
165 gpd/Bed in Health Clinic
10 gpd/Employee in a Health Clinic
13 gpd/Employee in an Office
25 gpd/Child in a Daycare
15 gpd/Employee in a Daycare
10 gpd/Vehicle Served
12 gpd/Employee in a Gas Station
32
a
.• .vueuc v
-' 16G6W Sn FT >
Lm u� 3 �u -
3.p LOT ?t I 3
PrnE
ox 9ncR�Es a3»"cREs IL90ar15 sOFr r ONE SO OT:
so cr w rt 3 o so ONE 9 z5 s onu SEs a��s Lo s wru or a Lor:n S
_ 3>]PLRES 0.3T1 OaCRES, 0]>B PbtFS 0]]O POR I 4Ya 50 .3aapaOR 2—SO Ff 3]SOR
Lorre - 1 Lor:p E2 w1ACREs _ 0.s14—s ZONE1 .558PORE8
o� I o
aea9 SOR � � Ima6SOR I .
oaTeACRes % a]r�ACREs , I
I
wino / _t or m:+9 Lm -3. I or:,z] n more a a
r+e9s 50 fT ++Sa09R LOT:27 LOT p wTxs Lm:N LOT.33 LOT wT:31 I eau 50 FT LOTarae 50 ++a3e35pR 3aa%sO FT 3u308oR .� Nn050 Ff tura So FT
:om PORES 6)+s SOFT018s0FT .`.050 FT 180150 FT 4+89 PORES Ora�cR s , `1 , I
am AfAEB Ot91 ACRES+ea PlAE54+m PtltES 832655 X. Fr SD FT ACRE51 O.reBAC11Es �' a - —s i 0360 ACRES O.I IACREs I 0551 ACRES I aSm PfftEs I S
B9ACtiES' 6186 ACRES
ONE 11 I _ _ I �— _ . ' /� _ _ a. �,..:..'13I0• r R - 10w0]]r8.039 FT . �� I :' soso LONE 14 es+l so Fr .3L
I U
ws oa 8
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LOT: 7�
9amPCREs aao ArREs Lara ONE li Fr ale PCREs n19s ACRES a1e> • LOT zsaso FrN Lor -e
a eACRE � ESI
,• 8816 S0 I .1 II LOT:T LOT: LOi:3
nn SOF>3 ACRES ... 0202 NSm
ACRES ¢3mPAE5' tun 50-3a5550FT � 50 FT a6a65o FT I��
' ':;� '. •' _ '" aIle ACRFn+6e KFEa 1 - T � I OE61 A4RES O.YIaLRES 0.3651:CRE8 0. 5 �
I
I i i' wr:oo %' i .... moria : II •—_ — - 1 �
'Lo :e ns9oso Fr ". wr:11 m3oso , _ _ I
LOT: 26
.t
I .. .... /� Lm n 1me]so Fr o.z9zeacPEs 10Tos0
Fr esnsaFr. � e6o06saFr L ! a3es.w+E I Lor:a`"
� l ZONE
s T Loa mo:3 Lm 1 }dn
M .
3:
. ;3 \+orn sa Fr o sPCREs 3aa.wEs s I-_20NE ]3 —:12LOT I ow3AEs a.sroicrsE.s ol4eV is aseeP o
w :r 0]aB AfAEB .1 So FT 83638 FT
N80F
��0.2al PCftEB �-� �/ Ire AOREs o——s
ZONE 16 wr3 wr:3
wraF ONE 12 so Fr - \99nsn1cr I' uzi.s Ia3i,s tsais so yr I / r ) n3u PCREs
ao�s� np]AwEs - I t-�on1Awa reBarso+Ff�aT:'AoT 1.
mor.. o\ � i a+n1 ArnEs o.111 ACRES
--
._., ... ..ZONE 7
§^o§g+ I r
em.noooAsCoRcE.r
scouFErsal�amaxAsC:oRcErs aimmor:] �Lm:a T°BPL
ZON
01,-5 Low+uoFr a15wFrwr:5
S 1x
0R 051 E6 axsses r
Fr
� 1
- R ONE 1.
--- --------
' REVISIONS PROJECT NUMBER
Ro. aEsaRmiw �� c ar PERFORMANCE P�� \ GOLDBERG SPORTING ESTATES 201"17
3 ^� Oa SHEET NUMBER
$ >- 7'` } (� G'C ureLAUREL. MT 1 OF 1
E i\, J i V i_ ' \ 7 �V �;:3 ��i .�'C �J aw,.uww..oe DRAWING NUMBER
' 608 NORTH 29TH STREET (406) 3840080 e � , EX 1
BIWNGS, MT 59101 perlormence-ec.com Golp LOT LAYOUT
Environment One
Pressure Sewer P
orporation
liminary
Cost and Design Analysis
For
Yard Office Rd-rev4
Laurel, Mon
Prepared For:
Performance Engineering
608 North 29th Street
Billings MT 59101
Tel: 406-384-0080
Fax:
Prepared By: M. Crowley/D. Benson
na
\\Eoneisl\data\Common\SSB\SSB Engineering Data\AE Projects\Yaro Office Rd, MT\Yard Office Rd, MT-rev4.EOne
Yard Office Rd -
Laurel, Monta
Prepared by: M. Crowley/D. Benson
Notes :
Analysis based upon drawings and data provided.
On: July 6, 2022
recommendations are preliminary.
GPD values impact retention times only, not line sizing or hydraulics. GP laterals to be
1.25".
General recommendations for valve placement are: cleat
approximately 1,000 ft and at branch ends and junctions;
and air release valves at peaks of 25 ft or more and/or at
Lateral kits comprised of a ball and check valve are requ
pump discharge and street main on all installations. Late
public right of way as possible.
Flow has been �rnodified to 1:000 GPD for all units per: re(
Normal residential flow is 200 GPD Altering GPD will ,i
1iines.' Retention times will increase substantially if the'1
)r control recomri ended�if retention t
out valves at intervals of
solation valves at branch junctions;
ttervals of 2,000 to 2,500 ft.
ed to be installed between the
ils should be located as close to the
estvof,engineer and i:i unicipality
I affecfforce,mam 'retention;
««< END OF NOTES »»>
\\EoneisI\data\Common\SSB\SSB Engineering Data\AE Projects\Yard Office Rd, MT\Yard Office Rd, MT-rev4.EOne
Valves
Pumps
Piping
Budgetary Low Presse
Yard Off
Laurel,
uantit Description
July 6, 2022
System Costs
Unit Cost Installation Sub Total
1
AirNacuum Release Valve
$0.00
0.00
$0.00
9
Clean Out
$0.00
0.00
$0.00
$0.00
75
DH151-93
$0.00
0.00
$0.00
90
Lateral Kits (Includes Ball\Check Valve Assembly)
$0.00
0.00
$0.00
90
Lateral (Boundary) Installation
$0.00
0.00
$0.00
90
Pump/PanelInstallation
$0.00
0.00
$0.00
4,500
LF of 1.25" Lateral Pipe
$0.00
0.00
$0.00
15
DH 152-93
$0.00
0.00
$0.00
$0.00
1,997
2.00" Pipe
$0.00
0.00
$0.00
3,306
3.00" Pipe
$0.00
0.00
$0.00
632
4.00" Pipe
$0.00
0.00
$0.00
$0.00
Number of Connections 90
Total Per Connection $0.00 Total (w/o other) »»»»»» $0.00
Grand Total Per Connection $0.00 Grand Total (including other) »»»»»» $0.00
Note: The System Costs above are based on piping sized for, and Grinder Pumps manufactured by Environment One Corporation.
Page 1 \\Eoneis1\data\Common\SS13\SSB Engineering Data\AE Projects\Yard Office Rd, MT\Yard Office Rd, MT.
Prepared By:
M. Crowley/D. Benson
PRELIMINARY PRESSURE SEWER- PIPE SIZING AND BRANCH ANALYSIS
Yard Office Rd-rev4
Laurel, Montana
July 6, 2022
Zone
Number
Connects
to Zone
dumber
ofPtunps
in Zone
Accum
Pumps
in Zone
als/day
3erPump
Max Flow
PerPump
gpm)
Max
Sim Ops(GPM)
Max Flow
Pipe Size
(inches)
Max
Velocity
(FPS)
Length of Mainriction
this Zone
Loss
actor
fU100 ft)
Friction
Loss This
one
ccum nc
Loss (feet)
ax Main
Elevation
Minimum Pump
Elevation
Static Head
"feet)
otal
Dynamic
Head (ft)
This spreadsheet was calculated using pipe diameters for: SDR11
HDPE
Friction loss calculations were based on a Constant for inside roughness "C" of: 150
1.00
2.00
3
3
1000
11.00
2
22.00
2.00
2.38
200.00
1.19
2.38
30.36
3,286.00
3,278.00
8.00
38.36
2.00
5.00
5
8
1000
11.00
3
33.00
2.00
3.57
376.00
2.52
9.47
27.98
3,286.00
3,280.00
6.00
33.98
3.00
4.00
3
3
1000
11.00
2
22.00
2.00
238
348.00
1.19
4.14
28.37
3,286.00
3,277.00
9.00
37.37
4.00
5.00
4
7
1000
11.00
3
33.00
2.00
3.57
227.00
2.52
5.72
24.23
3,286.00
3,279.00
7.00
31.23
5.00
6.00
3
18
1000
11.00
4
44.00
3.00
2.19
475.00
0.651
3.09
18.51
3,286.00
3,284.00
2.00
20.51
6.00
7.00
12
30
1000
11.00
5
55.00
3.00
2.74
730.00
0.98
7.17
15.42
3,286.00
3,282.00
4.00
19.42
7.00
17.00
6
36
1000
11.00
6
66.00
3.00
3.29
282.00
1.38
3.88
8.25
3,286.00
3,285.00
1.00
9.25
8.00
9.00
3
3
1000
11.00
2
22.00
2.00
2.38
168.00
1.19
2.00
28.13
3,294.00
3,286.00
8.00
36.13
9.00
10.00
6
9
1000
11.00
3
33.00
2.00
3.57
298.00
2.52
7.51
26.13
3,294.00
3,288.00
6.00
32.13
10.00
11.00
9
18
1000
11.00
4
44.00
3.00
2.19
433.00
0.65
2.81
18.62
3,294.00
3,289.00
5.00
23.62
11.00
12.00
12
30
1000
11.00
5
55.00
3.00
2.74
551.00
0.98
5.41
15.81
3,294.00
3,291.00
3.00
18.81
12.00
16.00
3
33
1000
11.00
6
66.00
3.00
3.29
129.00
1.38
1.78
10.40
3,289.00
3,289.00
0.00
10.46-
13.00
14.00
3
3
1000
11.00
2
22.00
2.00
2.38
124.00
1.19
1.47
19.62
3,289.00
3,289.00
0.00
19.62
14.00
15.00
6
9
1000
11.00
3
33.00
2.00
3.57
256.00
2.52
6.45
18.15
3,289.00
3,285.00
4.00
22.15
15.00
16.00
8
17
1000
11.00
4
44.00
3.00
2.19
474.00
0.65
3.08
11.70
3,289.00
3,288.00
1.00
12.70
16.001
17.00
2
52
1000
11.00
7
77.00
3.00
3.83
232.00
1.83
4.25
8.62
3,286.00
3,286.00
0.00
8.62
17.001
17.00
2
90
1000
11.00
8
88.00
4.00
2.65
632.00
0.69
4.37
4.37
3,286.00
3,286.00
0.00
4.37
Page 1 Note: This analysis is valid only with the use of progressive cavity type grinder pumps as manufactured by Environment One.
\\Eoneis1\data\Common\SSB\SSB Engineering Data\AE Projects\Yard Office Rd, MT\Yard Office Rd, MT-rev4.EOne
Prepared By:
M. Crowley/D. Benson
PRELIMINARY PRESSURE SEWER- ACCUMULATED RETENTION TIME(HR)
Yard Office Rd-rev4
Laurel, Montana
July 6, 2022
Zone
Number
Connects to
Zone
Accumulated
Total of Pumps
this Zone
Pipe Size (inches)
Gallons per 100
lineal feet
Length of Zone
Capacity of Zone
Average Daily Flow
Average Fluid
Changes per Day
Average Retention
Time (Hr)
Accumulated
Retention Time (Hr)
This spreadsheet was calculated using pipe diameters for: SDRI IHDPE
Gals per Day per Dwelling
1,000
1.00
2.00
3
2.00
15.40
200.00
30.81
3,000
97.38
0.25
0.98
2.00
5.00
8
2.00
15.40
376.00
57.91
8,000
138.13
0.17
0.74
3.00
4.00
3
2.00
15.40
348.00
53.60
3,000
55.97
0.43
1.11
4.00
5.00
7
2.00
15.40
227.00
34.96
7,000
200.20
0.12
0.68
5.00
6.00
18
3.00
33.47
475.00
158.97
18,000
113.23
0.21
0.56
6.00
7.00
30
3.00
33.47
730.00
244.31
30,000
122.80
0.20
0.35
7.00
17.00
36
3.00
33.47
282.00
94.38
36,000
381.46
0.06
0.16
8.00
9.00
3
2.00
15.40
168.00
25.88
3,000
115.93
0.21
0.83
9.00
10.00
9
2.00
15.40
298.00
45.90
9,000
196.08
0.12
0.62
10.00
11.00
18
3.00
33.47
433.00
144.91
18,000
124.22
0.19
0.50
11.00
12.00
30
3.00
33.47
551.00
184.40
30,000
162.69
0.15
0.31
12.00
16.00
33
3.00
33.47
129.00
43.17
33,000
764.39
0.03
0.16
13.00
14.00
3
2.00
15.40
124.00
19.10
3,000
157.07
0.15
0.61
14.00
15.00
9
2.00
15.40
256.00
39.43
9,000
228.25
0.11
0.46
15.00
16.00
17
3.00
33.47
474.00
158.63
17,000
107.17
0.22
0.35
16.00
17.00
52
3.00
33.47
232.00
77.64
52,000
669.74
0.04
0.13
17.00
17.00
90
4.00
55.31
632.00
349.58
90,000
257.45
0.09
0.09
Page 1 Note: This analysis is valid only with the use of progressive cavity type grinder pumps as manufactured by Environment One
\\Eoneisl\data\Common\SSB\SSB Engineering Data\AE Projects\Yard Office Rd, MT\Yard Office Rd, MT-rev4.EOne
Scott Aspenlieder
From: blewis@ambienteh2o.com
Sent: Thursday, June 9, 2022 10:41 AM
To: Scott Aspenlieder
Cc: Craig Dalton
Subject: RE: Goldberg Sporting Estates - Laure
Scott,
What happens when more pumps are running than designed/expected
This is most likely to occur after a prolonged power outage where there may be many stations at or above the ON level.
There are three different or simultaneous scenarios that may occur depending on product configuration or user settings.
1.) E/One grinder pumps feature a semi positive displacement / pr
has inherent "reserve hydraulic capacity" beyond the design lir
allows the grinder pumps to operate periodically above the de:
pressure sewer network, the duration of the power outage, an
ON level, after power returns the system may operate above ti
typically infrequent and short in duration. In most cases, there
interval when the pump operates briefly above the design limii
power outage is practically transparent to the users and systen
high level alarms at certain stations if they are above the ALARI
users are instructed to silence the audible alarm with the push
enclosure. Depending on the type of station, the unit may take
on the alarm panel will turn off. If after 30+ minutes, the light i.
party for investigation or service.
2.) All E/One grinder pumps have an integrated "smart" motor cor
for normal start/stop operation of the motor/pump. The moto
including thermal protection and overpressure (high amperage
operating than expected, the network pressure will be greater
capabilities of the E/One grinder pump (80 psi or 185 ft TDH), t
Eventually, the excess heat will trigger a temperature actuated
pump. Prior to that occurring, amperage monitoring on the me
doing more work than expected and therefore drawing higher
pump and enter a 5 minute rest period. During this time, other
closer to the discharge point) will continue to operate and recc
rest period, the unit will automatically restart. If the pressure h
the high amperage condition remains, another 5 minute rest p,
issue is self corrected.
3.) Certain E/One alarm panels have features that can help system
including after a prolonged power outage. The E/One Protect F
which operates similar to the amperage protection described ii
amperage. The wattage based overpressure protection is more
Additionally, the Protect Plus alarm panel has a feature called `
designed to mitigate the risks of too many grinder pumps turni
feature, grinder pumps can be configured to delay start-up wh
user programmable setting with the factory default of 0 minute
)gressive cavity pump design. This pump design
it of the pump. This reserve hydraulic capacity
gn parameters. Depending on the size of the
the number of grinder pump stations above the
e calculated design pressure. These scenarios are
s no detriment to the grinder pump service
and the system recovery from a prolonged
operator. The only indication may be nuisance
4 level when the power returns. In most cases,
)utton switch on the exterior of the alarm panel
10-30 minutes to recover at which point the light
still on, the user should contact the appropriate
:rol unit. This motor control unit is responsible
controller also has pump protection features
protection. In the event more pumps are
han expected. If the pressure exceeds the design
e motor will begin to generate more heat.
>afety switch on the electric motor within the
or controller unit may detect that the pump is
mps. The motor controller unit will disable the
Dumps in the network (specifically those pumps
rery from the power outage, After the 5 minute
is reduced, the system will operate normally. If
riod will begin. That cycle will continue until the
users and operators mitigate operational risks —
us alarm panel features overpressure protection
#2 but uses operating wattage as opposed to
sensitive and generally responds quicker.
power On Delay". This feature is specifically
ig on immediate after a power outage. With this
n power is first applied to the station. This is a
s. When this feature is used, typically those
stations closest to the discharge point of the network .(therefc
pressure) will have a 0 minute delay and will operate immediz
next group of units can have a 5-7 minute power on delay. Du
emptying their contents and shut off. Moving further upstreai
delay ... and so on. The size of each group usually depends on t
to determine the size of the group or the duration of the dela
away from the discharge point.
If power outages are a frequent occurrence or concern, E/One recom
panel so they have the wattage based overpressure protection and c<
on delay. Regardless, all E/One users will receive the benefits of the r
design and the unique integrated pump protection features of the E/i
Hope this helps!
Ben Lewis
e
525 St. Johns Ave. STE D
Billings, MT 59102
bleyvis6.zimbibhteh2o corn.
Direct: 406-850-0030
Office: 406-969-2022
Fax: 303-380-0664
CONFIDENTIALITY NOTICE: The information contained in this e-mail communication ar
confidential or otherwise protected from disclosure and is intended only for the use of
to, or receipt by, any unauthorized person. The use, distribution, transmittal or re-tran
strictly prohibited without our express approval In writing or by a -mall. If you are not t
your system without copying It and notify the above sender so that our e-mail address
intended recipient is not a waiver of any attorney-client or work -product privilege.
those with the least amount of system
:e when the power returns. Moving upstream, the
Ing this time, the downstream units will be
I, the next group of units can have a 7-10 minute
e size of the total project. There is no set method
but the delay time should increase as you move
ends users select the Sentry Protect Plus alarm
utilize, if they so choose to configure, the power
;iient nature of the progressive cavity pump
ie motor controller unit.
J any attached documentation may be privileged,
the designated recipients. It is not intended for transmission
;mittal by an unintended recipient of this communication Is
ie intended recipient of this e-mail, please delete it from
may be corrected. Receipt by anyone other than the
PRELIMIMARY MASTER PLAT OF
GOLDBERG SPORTING ESTATES, FIRST FILING
® BEING LOT 18 OF NUTTING BROTHERS SUBDIVISION, 2ND FILING & LOTS 19-25 OF NUTTING BROTHERS
Im SUBDIVISION, 3RD FILING SITUATED IN THE NE 1/4 OF SECTION 10, T 02 S, R 24 E, P.M.M.
LOCATED IN CITY OF LAUREL, YELLOWSTONE COUNTY, MONTANA
U7®®®®®®® EXISTING LAND USE: AGRICULTURAL
®®®®®®® PREPAREDFOR:GOLDBERGINVESTMENTS,LLC
®®®®®
®®ems O PREPARED BY: PERFORMANCE ENGINEERING, LLC EXISTING ZONING: RESIDENTIAL LIGHT MULTI - FAMILY (RLMF)& COMMUNM'COMMERCIAL(CC)
PRELIMINARY PLAT DATE: JANUARY 2021 PROPOSEDLANDUSE: RESIDENTIAL&COMMERCIAL
0
PROPOSED ZONING: RLMF&CC
PROPERTYOWNER: GOLDBERG INVESTMENTS. LLC
SITE DATA
F LOTS 88
M LOT AREA s 0.64 AC
4 LOT AREA x0.17 AC
I LINEAL FEET OF STREETS I 3 6.113 LF I
NL'
HtJIDtN11AL A(:KtA(i[ 318.73 AC
GROSS RESIDENTIAL ACREAGE s 27.74 AC
NET COMMERCIAL ACREAGE 18.61 AC
GROSS COMMERCIAL ACREAGE 39.31 AC
VICINITY MAP i /�J l I
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SHEET 1 OF 1
2611 Gabel Road
Billings, MT 59102-7329
406 245 5499
KLIENG.COM
August 31, 2022
Kurt Markegard
Public Works Director
City of Laurel — Public Works Department
PO Box 10
Laurel, Montana 59044
Re: Petition for Variance from City Code for Goldberg S
Dear Mr. Markegard:
MR
Estates — Low Pressure Sewer System
The Developer of Goldberg Sporting Estates, First Filing is requesting a Variance from the City of Laurel
Standards for the use of a Low -Pressure Sewer System (LPSS) too collect wastewater within the
development. As a non-standard collection system this type osystem requires approval by City Council
prior to acceptance.
The proposed sanitary sewer will have a standard 4-6" sewer
an on -lot sewage collection tank with a sewage pump. This to
diameter force main that will eventually discharge into the Cit
proposed system would consist of 1.25" discharges from each
force main ranging from 2-3" in diameter. Prior to leaving the
a 4" force main, then flow west along Eleanor Roosevelt Drive
alley between Locust Ave and Mulberry Ave for approximately
MH 333.
!rvice exit the building and discharge into
k/pump station will discharge to a small
gravity sewer collection system. The
ank with the primary subdivision internal
ubdivision the force main will increase to
or approximately 190', then south in the
55' where it will discharge into existing
The Developer's Design Engineer was requested to analyze the downstream collection system to
determine the effects of this subdivision development. The findings of the Design Engineer's Report are
the following:
1. The existing 8" sanitary sewer main between MH 332 znd MH 335 will be a limiting line and be
required to be upsized to a 10" gravity line.
2. The LPSS requires no upgrades to occur at the downstream Elm Lift Station.
3. A traditional gravity collection system or single lift station from Goldberg Sporting Estates to MH
333 would require upgrades to the Elm Lift Station.
As additional benefits to the City of Laurel, the Developer is proposing:
1. Creation of a Homeowner's Association (HOA) to contr
through a direct contract with the system supplier.
2. To replace the 8" sewer main between MH 332 and MI
3. Lands to the east and south along Eleanor Roosevelt Di
planning of the proposed LPSS.
and maintain the on -lot components
335 with a 10" sewer main.
ve were included in the sizing and
4. Force Mains in the Public Right -Of -Way are typically 0
Developer is willing to maintain its ownership in the H
5. Installation of the entire force main and collection sys
AFS
ed by the City of Laurel, however,
to discharge at MH 333.
i to be paid for by the Developer.
There are several items in the City Rules and Regulations Governing Utility Services that contradict the
installation of an LPSS. These are items that would either need to be agreed to by the Developer or
waived by the City of Laurel. They are:
1. Section 2.11 MISCELLANEOUS DEVICES
The utility may also require the customer to submit semi-annual test results on such
devices certifying that the devices have been check d by an authorized service
representative and are in good working order.
2. Section 2.14 LIABILITY OF UTILITY
The utility is responsible for wastewater facilities up to the service wye or tee. All
facilities from the building up to and including the service wye or tee are the
responsibility of the property owner. The City of Laurel shall determine whether a line is a
service line or a public main if a discrepancy occurs.
3. Section 12.1 DISCHARGING CERTAIN MATTER INTO SEWER PROHIBITED
Except as hereinafter provided, no person shall discharge or cause to be discharged any
of the following described waters or wastes into an� public sanitary sewer:
12.1.9 Any noxious or malodorous gas or substance capable of creating a public nuisance.
This LPSS has the potential to create odor problem at downstream facilities as
mentioned in the E -One sewer system analysis.
4. Section 12.5 PRELIMINARY TREATMENT FACILITIES
The Owner shall provide facilities meeting the require
regulations as his/her own expense where it is necess
Director, to provide preliminary treatment of any wat
12.5.3 Reduce objectionable characteristics or constit
the maximum limits provided by this section.
This could include odor elimination practices at the E
5. Section 14.6.1.3 APPLICATION REVIEWS AND RECOM
Make commitment to construct all the necessary v
ants set forth in these rules and
/, in the opinion of the Public Works
or wastes to:
nts in such water or wastes to with
Street Lift Station.
DATIONS
and/or wastewater system
facilities and to begin development of the entire parcel of property to be included in the
water and/or wastewater service area within 2 year from the date of the City Council's
approval of the enlargement application. In the event the applicant fails to comply with
this commitment, the property in question shall automatically be excluded from the
service area.
Would the two year commitment include the
6. Section 15.11 OWNERSHIP OF EXTENSIONS
The ownership of all extensions of the municipal wa
constructed within the corporate City limits shall be
of all pump stations?
and/or wastewater system
ted in the City whether same are
constructed by special improvement district or by pi
An applicant constructing an extension within the cc
private contract or special improvement district sha
ownership of such an extension to the City upon ac(
In addition, the City shall at that time have assumed
so extended, including the right to connect addition
as well as the right to further extend said facilities.
to contract.
rporate City limits by means of a
I be deemed to have conveyed the
aptance of the extension by the City.
complete control over the facilities
it customers to the extended facilities
The City will have to agree to waive the ownership of the force main to MH 333 or agree
to operate and maintain the force mains within the subdivision.
7. Section 15.12 MAINTENANCE OFEXTENSIONS
The City shall be responsible for the maintenance of
and control of said extensions are vested in the City
operation, maintenance, repair, enlargement, or rel
privately owned and/or controlled by persons other
the owners of facilities.
extensions only when the ownership
The responsibility for installation,
lacement of facilities that are
than the City shall rest solely with
8. Section 15.19 SUBDIVISION EXTENSIONS OF WATER SUPPLY/WASTWATER FACILITIES
All public water supply, necessary off-site public water
system facilities required to serve a subdivision, includ
as well as the water and sewer mains in, to, around, ar
installed by and at the expense of the applicants reque
supply and wastewater system to serve the subdivisioi
the municipal water supply and wa
their subdivision at their expense.
9. Section 15.33 MINIMUM CAPACITY, SIZE, ARRANG
WASTEWATER SYSTEMS
and sewer mains, and wastewater
ng connecting and cross -tie water mains,
d through said subdivision, shall be
sting an extension of the municipal water
in question. Said applicants shall also
tem to the farthest point or points of
, AND SPACING CRITERIA FOR
15.33.5 Arrangement of Sewers. Public sanitary sewer shall be arranged in such a manner and
in such a way so as to serve by gravity flow the total tributary area of the wastewater
extension project in question. The use of wastewater plumping stations to provide wastewater
service for said area, or portions thereof, shall be avoided whenever it can be feasibly
accomplished.
15.33.11 Wastewater Pumping Stations and Force Mai
force mains installed during the construction of waste
by the City.
The following are items that in contrast with the Standards for
1.Section 5 MEETING REGIONAL NEEDS
5.1 All public improvements shall be designed
the surrounding area. Storm sewer and sa
Wastewater pumping stations and
er extensions shall be as specified
c Works Improvements:
logical part of the development of
Water
mains shall be designed to provide distribution and looping to adjoining systems.
Arterial streets will be developed to the
street improvements will be extended t
<<KLJ
width for "Streets". Utilities and
future extensions to adjoining areas. The Public Utilities Director (PUD) may
require oversizing of utility lines to accommodate future growth of the City.
5.2 Where existing City utility lines do not adjc
developer will be required to extend the Ii
necessary. Where the existing roadway im
proposed developments, the developer m
roadway to the development. Except as pr
be at no cost to the City.
n the proposed development, the
es to the development as
rovements do not extend to the
be required to improve the
vided below, these extension will
2. Chapter 6. Section 29.3 Design Standards for Punip Stations for Alternative
Collection Systems. The minimum pipe diameter for force mains shall be 1.5
inches.
The following items are issues that the MT Departm
require as part of their review and approval process
• MDEQ may require a plan from the City to incr
system from MH 332 to the Elm Lift Station
• The Elm lift station currently has odor issues.
the odor issue.
nt of Environmental Quality may
the size of the gravity sewer
he use of an LPSS may increase
The Council has three options for a response to the Developer on this variance request.
1. They can deny the request to install a low pressure ewer system.
2. They can approve the request to install the low pressure sewer system as planned.
3. Or, They can conditionally approve the installation of a low pressure sewer system.
If the Council wishes to conditionally approve the low pressure sewer system; we recommend
the following conditions.
• The company contracted to inspect the collection/pumping units perform their
analysis on a semi-annual basis and the HOA provide copies of those reports to the
City.
• The Developer install facilities at the force main disc iarge point to minimize the odor
problems that are expected to occur there.
• The City take Ownership of the sewer force mains within the ROW. Individual
properties will own the service up to the wye or tee connection in the street.
• As part of the sewer force main installation in the ROW, the Developer shall install
tracer wire and access points for connection.
• Establish an SID on the lots within the subdivision to pay for capital improvements to
cover force main maintenance.
• Developer provide an extension down Eleanor Roosvelt Dr for potential connection
by all lots included in the sewer impact analysis.
M'151'-Jilllu
• Developer be required to upsize the direct sewer line from MH 332 to the Elm Street
Lift Sation connection with a 10" PVC line.
If there are any questions, please feel free to give me a call at 406.245.5499.
Sincerely,
KU
4 �Y'�e
Ryan E. Welsh, P.E.
Project Engineer