20130320 STEP Report 04142014 C 7
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S.T.E.P. SYSTEM DESIGN
PROPONENT:
MT. TERRACE BUILDERS
CONTACT: TONY TRUNK
6524 CROMWELL BEACH DRIVE,N.W.
GIG HARBOR, WA. 98335
PH: (253) 310-5078
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PREPARED BY:
Larson & Associates
Land Surveyors and Engineers, Inc.
4401 South 66th Street
Tacoma, WA 98409
(253) 474-3404
April 11, 2014
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� AP� 14 2014
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PROJECT DESCRIPTION
The"Yelm Apartments"project is located in the NE1/4 of the SE1/4 of Section 24,
Township 17 North, Range 1 East of the Willamette Meridian in the City of Yelm in
Thurston County, Washington. The proposal consists of construction of(2) 8 unit
apartment buildings for a total of 16 proposed units and associated parking/access and
open space areas onsite. The property is approximately 1.14 acres in size located at the
site address of 304 Longmire St. on parcel #21724410200. Surrounding properties
� consist of a golf course to the south and existing Multi-Family complexes. This site will
! be served by the City of Yelm for water and sanitary sewer. Additional utilities include
i Puget Sound Energy far power and Qwest Communications for telephone.
EXISTING SOIL CONDITIONS
Per the S.C.S. soils map, on-site soils consist of Spanaway gravelly sandy loam which
will very conducive to infiltration of stormwater for proposed improvements onsite.
Pacific Geo Engineering, LLC performed an onsite soil investigation on August 6, 2013
at (9)test pit locations onsite to approximate depth of 11 feet and performed field
percolation testing at(3) of these (9)total test pit locations. It was determined from there
testing that an"in field" infiltration rate of 12 in/hr exists onsite within the native soils.
We have taken this information and applied a factor of safety of(2) for a design
infiltration rate for onsite infiltration trench facilities of 6 in/hr which we utilized for our
Final Stormwater Quantity Control design.
SANITARY SEWER SYSTEMS
The (2)proposed apartment buildings will each discharge via 6" building sewer lines @
2.0%(min.) to a respective 4,000 gal. fiberglass STEP tank(6'diam.) and then continued
conveyance via 6"building sewer line @ 2.0%(min.) to a"joint" 3,000 gal. concrete
STEP tank containing (1) duplex Orenco pump package or approved equal. The duplex
pump will be controlled with panel located on uni-strut post fitted with a transfer switch
model DT 323 URK as mfg. by Culter Hammer and a male plug, mode170530 MBWP as
mfg. by Bryant. Pumped discharge will leave the "joint" STEP tank via a 2" discharge
STEP pressure line routing flows out to the existing 2" STEP stub located in the
northwestern corner of the site extending from Longmire St. Flows will then enter the
existing 4" STEP main in Longmire St. for continued conveyance. See STEP Tank
Sizing and pump/tank specifications attached to this report for additional information.
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S.T.E.P. TANK SIZING CALCULATION FOR "RIVER RL1N
APARTMENTS"
REQUIRED DETENTION VOLUME CALCULATION:
� DESIGN FLOW=65 GALJPERSON/DAY (PER TABLE 2 OF YELM DESIGN
MANUAL)
DESIGN OCCUPANCY OF APARTMENT UNIT=2.98 (ESTABLISHED FROM
GENERAL SEWER PLAN FOR THE CITY OF YELM PREPARED BY "BROWN &
CALDWELL )
DEPARTMENT OF EGOLOGY FROM CRITERIA FOR SEWAGE WORKS DESIGN
MANUAL ("ORANGE BOOK") SIZING EQUATION (V= 1.SQ)
(65 GALJPERSON/DAY) * (2.98 PEOPLE/APMT. UNIT) = 194 GAL./APMT.
UNIT/DAY
(194 GAL./APMT. LTNIT/DAY) * (8 LTNITS/BLDG.) = 1,552 GAL./APMT.
BLDG./DAY
1,552 GAL./APMT. BLDG./DAY * (1.5) =2,328 GAL.BLDG. (REQUIRED
DETENTION VOLUME)
PROVIDED DETENTION VOLUME PER BUILDING:
Tank#1 (6' diameter fiberglass tanks) @ 46" depth (3.85')=2853 GAL. PER
BUILDING (see attached table)
Tank#3 (3.18' (TANK DEPTH TO " PUMP OFF")) * 6.5' (INSIDE TANK
WIDTH) * 11.92' (INSIDE TANK LENGTH) * (7.48) = 1843 GAL=2 =922 GAL.
PER BUILDING
TOTAL DETENTION VOLUME PROVIDE PER BUILDING =3775 GAL. > 2,328
GAL. ("OK")
REQUIRED 24 HOUR STORAGE VOLUME CALCULATION):
(194 GAL./APMT. UNIT/DAY) * (8 LTNITS/BLDG.) = 1,552 GAL.BUILDING
(REQUIRED BETWEEN"PUMP OFF"AND TOP OF TANKS)
PROVIDED 24 HOUR STORAGE VOLUME PER BUILDING:
TANK#1 (1.92' (DEPTH FROM INVERT TO TOP OF TANK)=f1065 GAL.
PER BLDG. (see attached table)
TANK#3 (3.24' (DEPTH FROM "PUMP OFF" TO TOP OF TANK) * 6.5'(INSIDE
TANK WIDTH) * 11.92' (INSIDE TANK LENGTH) * (7.48) = 1878 GAL. /2 = 939
GAL. PER BLDG.
TOTAL 24 HOUR STORAGE VOLUME PROVIDED PER BUILDING =(1065
GAL. +939 GAL.)=2004 GAL. > 1,552 GAL. ("OK")
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WORKING VOLUME CALCULATION:
INFLOW(Q) =2.16 GPM
Qout=22.5 GPM
PER D.O.E., a minimum of 10 minutes between pump starts is required. Therefore,the
minimum volume required is as follows:
� Vmin. _ (Qout*10)/4 =(22.5 GPM * 10)/4 = 56.3 GALLONS
I
'' Tank Volume=(6.5'*11.92'*0.38') * 7.48 =220 Gallons
I' w/0.38' between pump on and pump off=220 Gal. >56.3 Gal. ("OK")
PROVIDED:
(1) 4000 GAL. FIBERGLASS STEP TANK PER APARTMENT BUILDING
AND (1)JOINT PUMP TANK/CHAMBER W/DUPLEX ORENCO PUMP
PACKAGE (MODEL PF20 OS ll) OR APPROVED EQUAL.
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F' XERXES CORPORATION Dipstick Calibration Chart for 4,000 Gallon - 6' Diameter SW Tank
� DIPSTICK DIPSTICK DIPSTICK DIPSTICK DIPSTICK
REA�ING GALLONS READING GALLONS READING GALLONS READING GALLONS READING GALLONS
� 35-�14" 2085 43" 2633 50-1/4" 3152 57-1/2" 3609 64-3/4" 3965
35-�I8" 2095 43-1/8" 2643 50-3/8" 3160 57-518" 3616 64-7/8" 3970
, � 36" 2104 43-1/4" 2652 50-1/2" 3169 57-3/4" 3623 65" 3975
I p� 36-'ll8" 2114 43-3/8" 2661 50-5/8" 3177 57-7/8" 3630 65-1/8" 3979
I �» 36-'ll4" 2123 43-1/2" 2670 50-3/4" 3186 58" 3637 65-1/4" 3984
�� 36-318" 2133 43-5/8" 2680 50-7/8" 3194 58-1/8" 3644 65-3/8" 3989
� 36-112" 2142 43-3/4" 2689 51" 3203 58-1/4" 3651 65-1/2" 3993
36-518" 2152 43-7/8" 2698 51-1/8" 3211 58-3/8" 3658 65-5/8" 3998
36-314" 2161 44" 2707 51-1/4" 3219 58-1/2" 3665 65-3/4" 4003
36-718" 2171 44-1/8" 2716 51-3/8" 3228 58-5/8" 3672 65-7/8" 4007
37" 2181 44-1/4" 2726 51-1/2" 3236 58-3/4" 3679 66" 4011
37-'118" 2190 44-3/8" 2735 51-5/8" 3244 58-7/8" 3686 66-1/8" 4016
� 37-114" 2200 44-1/2" 2744 51-3/4" 3253 59" 3693 66-1/4" 4020
� 37-318" 2209 44-5/8" 2753 51-7/8" 3261 59-1/8" 3699 66-3/8" 4024
� 37-712" 2219 44-3/4" 2762 52" 3269 59-1/4" 3706 66-1/2" 4029
37-518" 2228 44-7/8" 2771 52-1/8" 3277 59-3/8" 3713 66-5l8" 4033
y 37-314" 2238 45" 2781 52-1/4" 3286 59-1/2" 3719 66-3/4" 4037
37-7/8" 2247 45-1/8" 2790 52-3/8"r '3294 59-5/8" 3726 66-7/8" 4041
38" 2257 45-1/4" 2799 52-1/2" 330� 59-3/4" 3733 67" 4045
38-1/8" 2266 45-3/8" 2808 52-5/8" 331 G 59-7/8" 3739 67-1/8" 4049
38-1/4" 2276 45-1/2" 2817 52-3/4" 3318 60" 3746 67-1/4" 4053
38-3/8" 2285 45-5/8" 2826 52-7/8" 3326 60-1/8" 3752 67-3/8" 4056
38-1/2" 2295 45-3/4" 2835 53" 3334 60-1/4" 3759 67-1/2" 4060
38-5/8" 2304 -7/8" 2844 53-1/8" 3342 60-3/8" 3765 67-5/8" 4064
- /4" 314 46" 2853 53-1/4" 3350 60-1/2" 3771 67-3/4" 4067
38-7/8" 2323 - 8 2 53-3/8" 3358 60-5/8" 3778 67-7/8" 4071
39" 2333 46-1/4" 2871 53-1/2" 3366 60-3/4" 3784 68" 4074
39-1/8" 2342 46-3/8" 2880 53-5/8" 3374 60-7/8" 3790 68-1/8" 4078
39-1/4" 2352 46-1/2" 2889 53-3/4" 3382 61" 3797 68-1/4" 4081
39-3/8" 2361 46-5/8" 2898 53-7/8" 3390 61-1/8" 3803 68-3/8" 4084
39-1/2" 2371 46-3/4" 2907 54" 3398 61-1/4" 3809 68-1/2" 4087
39-5/8" 2380 46-7/8" 2916 54-1/8" 3406 61-3/8" 3815 68-5/8" 4090
39-3/4" 2390 47" 2925 54-1/4" 3414 61-1/2" 3821 68-3/4" 4093
39-7/8" 2399 47-1/8" 2934 54-3/8" 3422 61-5/8" 3827 68-7/8" 4096
40" 2408 47-1/4" 2943 54-1(2" 3430 61-3/4" 3833 69" 4099
40-1/8" 2418 47-3/8" 2952 54-5/8" 3437 61-7/8" 3839 69-1/8" 4102
40-1/4" 2427 47-1l2" 2961 54-3/4" 3445 62" 3845 69-1/4" 4105
40-3/8" 2437 47-5/8" 2969 54-7/8" 3453 62-1/8" 3851 69-3/8" 4107
40-1/2" 2446 47-3/4" 2978 55" 3461 62-1/4" 3857 69-1/2" 4110
40-5/8" 2456 47-7/8" 2987 55-1/8" 3468 62-3/8" 3863 69-5/8" 4112
40-3/4" 2465 48" 2996 55-1/4" 3476 62-1/2" 3868 69-3/4" 4114
40-7/8" 2474 48-1/8" 3005 55-3/8" 3483 62-5/8" 3874 69-7/8" 4117
41" 2484 48-1/4" 3013 55-1/2" 3491 62-3/4" 3880 70" 4119
41-1/8" 2493 48-3/8" 3022 55-5/8" 3499 62-7/8" 3885 70-1/8" 4121
41-1/4" 2503 48-1/2" 3031 55-3/4" 3506 63" 3891 70-1/4" 4122
41-3/8" 2512 48-5/8" 3040 55-7/8" 3514 63-1/8" 3897 70-3/8" 4124
41-1/2" 2521 48-3/4" 3048 56" 3521 63-1/4" 3902 70-1/2" 4126
41-5/8" 2531 48-7l8" 3057 56-1/8" 3529 63-3/8" 3908 70-5/8" 4127
41-3/4" 2540 49" 3066 56-1/4" 3536 63-1/2" 3913 70-3/4" 4128
41-7/8" 2549 49-1/8" 3074 56-3/8" 3544 63-5/8" 3918 70-7/8" 4129
42" 2559 49-1/4" 3083 56-1/2" 3551 63-3/4" 3924 71" 4130
42-1/8" 2568 49-3/8" 3092 56-5/8" 3558 63-7/8" 3929 71-1/8" 4131
42-1l4" 2577 49-1/2" 3100 56-3/4" 3566 64" 3934 71-1/4" 4131
42-3/8" 2587 49-5/8" 3109 56-7/8" 3573 64-1/8" 3939
42-1l2" 2596 49-3/4" 3118 57" 3580 64-1/4" 3945
42-5/8" 2605 49-7/8" 3126 57-1/8" 3587 64-3/8" 3950
42-3/4" 2615 50" 3135 57-1/4" 3595 64-1/2" 3955
42-7/8" 2624 50-1/8" 3143 57-3/8" 3602 64-5/8" 3960 x64S.1 -07/05fbf
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TABLE 2 - ESTIMATED DAILY SEWER FLOWS
Type of Establishment Gallons Per Person Per Day
(Unless Otherwise noted)
Airports (per passenger) 5
Apartments - multiple family (per resident) 65
� Bathhouses and swimming pools 10
Camps:
j Campground with central comfort stations 35
With flush toilets, no showers 25
', Construction camps (semi-permanent) 50
Day Camps (no meals served) 15
Resort camps (night and day) with limited plumbing 50
Luxury camps 100
Cottages & small dwellings with seasonal occupancy 50
Country clubs (per resident member) 100
Country clubs (per non-resident member present) 50
Dwellings:
Boarding houses 50
additional for non-resident boarders 10
si ences and es s 150
Multiple fami y we ings (apartments)
ooming hou s
Single family dwellings 75
Factors (gallons per person, per shift, exclusive of
industrial wastes) 35
Hospitals (per bed space) 250 +
Hotels with private baths (2 persons per room) 60
Hotels without private baths 50
Institutions other than hospitals (per bed space) 125
Laundries, self-service (gallons per wash, i.e., per
customer 50
Mobile home parks (per space) 250
` Motels with bath, toilet, and kitchen wastes
(per bed space) 50
Motels (per bed space) 40
Picnic Parks (toilet wastes only) (per picnicker) 5
Picnic parks with bathhouses, showers, and flush
toilets 10
Restaurants (toilet and kitchen wastes per patron) 10 •
Restaurants (kitchen wastes per meal serviced) 8
Restaurants additional for bars and cocktail lounges 2
Schools:
Boarding 100
Day, without gyms, cafeterias, or showers 15
� Day, with gyms, cafeterias, and showers 25
� " Day, with cafeteria, but without gyms, or showers 20
� .' � Service stations (per vehicle served) 10
° : Swimming pools and bathhouses 10
� Theaters:
Movie (per auditorium seat) S
'' Drive-in (per car space) 5
, Travel trailer parks without individual water and sewer
; �' hook-ups (per space) 50 ,
Travel trailer parks with individual water and sewer . ,
, hook-ups (per space) 100 -
� Workers:
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C1-32 August 2008 Criteria for Sewage Works Design
B. Detention Volume STEP/SDG
The detention volume or liquid volume of a STEP or SDG tank that serves
a single-family home or small business must equal at least 950 gallons.
I Detention volume is defined as the volume of liquid below the"OFF"
'', switch(STEP)or the outlet pipe(SDG). Size tanks that serve structures
with higher wastewater discharge volumes in accordance with the
following equation:
_ " V= 1.SQ(residential strength waste)
V=2.OQ(nonresidential strength waste)
Where:
V=Liquid volume
Q=Peak day flow for the structure being served
The equation provides the minimum liquid volume within the STEP/SDG
tank. The tank must also contain sufficient working volume and storage
volume.Liquid volume must not exceed approximately 65 to 75 percent of
the total tank volume.
C. Working Volume STEP/GP
The working volume must exceed the difference between the peak influent
`����.��' flow and the discharge of the STEP or grinder pump over a period of time
estimated to be the peak duration.Working volume is defined as the
volume between the"ON"and the"OFF"switch.
D. Storage Volume
STEP, SDG,and GP vessels (tanks)must have a minimum of 24 hours of
storage within the tank except as allowed(see C1-10.1.6E2).Install tanks
without 24 hours of storage with a power transfer switch with an
emergency generator plug or other device to allow emergency power
connection.Alternatively,provide reserve volume with a separate vessel.
Storage volume is defined as the volume between the"OFF"switch and
the top of the tank. Tank designs must ensure that most of the storage
volume exists between the"ON"and"OFF"switches and limit storage
volume below the"OFF"switch. Allowing large volume of storage below
the"OFF"switch can promote septic conditions within the tank,which can
cause corrosion and odor problems for the entire system.
E. Power Outages
1. Applicability
STEP, SDG,and GP systems installed in areas with a history of
prolonged power outages may require additional storage volumes. The
designer must review historical records of the local power purveyor to
determine the advisability of adding more storage.
2. Power Transfer Switch/EG Plug
For vessels without 24 hours of storage,provide a power transfer
switch with an emergency generator plug.Limit the number of tanks
installed with power transfer switches to the number of tanks or
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Cit,y of Yelm General Sewer Plan Section 2
:F �. �
Year ! Average annual flow(mgd) ; Maximum month flow(mgd) ; Maximum day flow(mgd� ; Peak hour flow(mgd)
_.... , ;_.. _._... _...._.
2006 ' 0.284 0.314 0.427 ', NA
_..._..._�_... .. ........... ....... __....... __. __.... _;__ _.___ y
2007 0.317 0.329 0.398 0.708
._.. _.._.........
2008 0.329 0.353 0.411 0.756
_._.._._�.._�. _........ . ............... . ..__._.....�...._.... ._._.... ;.... _.__.............. ...._....__.._.. �...._.. . .__ .. .............. ..._.__.....
2009 ! 0.349 0.359 0.436 0.784
_ ..._.-_-. �.___,_�_.. __._.._._._._�__._._____._.__,_.___._.._.. .........._.__._. .___.._ __�_...._._____.._.... __...._.__ __ �
2010 0.354 0.366 0.449 � 0.843
3-yearaverage 0.34 0.36 0.43 �
2.5.1.1 Residential Flows
In order to estimate the amount of residential flow treated at the WRF, average winter water use records
for the last 3 years were analyzed. Residential use accounted for approximately 75 percent of water
demand for the last three winters; residential flows at the WRF were therefore estimated to be 75
percent of the average influent flow.This equates to an average flow of 0.27 mgd and approximately 43
gallons per day(gpd) per person.
An ERU is defined as the flow produced by one avera c ' s' I 'I ' u it. B e on�
U.S. Census data for 2010,there were approximatel 2.98 people�er eac�h r��dential housing unit
within city limits. Compared to the sewered population o 6, ,this equates to 2;'�3� c ed
and 127.41 gpd/ERU.
2.5.1.2 Non-Residential Flows
Based on winter water use records, commercial wastewater flows were determined to comprise 22
percent of the average influent flow at the WRF, or 0.07 mgd.When compared to commercial
development analysis,this flow rate is equivalent to approximately 0.13 gallons per day per square foot
(gpd/ft2)of commercial development(5,660 gpd/acre).
Wastewater flows from schools were determined to comprise 3 percent of the average influent flow at
the WRF, or 0.01 mgd.The 2010 WSP estimates a student population of 3,889 within city limits.This
equates to approximately 2.6 gpd per student.
2.5.1.3 Infiltration and Inflow
Infiltration and inflow(I/I) is defined as flow entering a system through groundwater(infiltration)and
precipitation (inflow).The total flow through a system is therefore the sum of the base wastewater flow,
plus the I/I. Infiltration and inflow in the Northwest typically follows a seasonal pattern,with high levels of
I/I during the wet winter season and low levels of I/I during the summer.
Yelm's collection system consists entirely of STEP tanks,which pump flow from individual connections to
the WRF. Because the entire system is pressurized, it is resistant to I/I.The Citys 2011 Inflow and
Infiltration Report, prepared in January 2012, does not report any significant I/I in the system.The 2011
I/I Report is included in Appendix 2B.
In 2011,the difference between the maximum month influent flow and minimum month flow was only
0.031 mgd, indicating that wet weather does not have a strong impact on flows at the WRF. Figure 2-5
provides an example of a typical wet weather month's comparison of daily influent flow to rainfall.As
shown in the figure,there is no correlation between daily rainfall and influent flow. For this reason,
additional flow due to I/I is not included in the flow characterization or flow projections.
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CITY OF YELM SEWER DEPARTMENT
Sewer Spec addendum
1. TEP Tanks installed larger than 3000 gallons shall be fiberglass tank
by eit e ent Solutions Inc. or Xerxes Inc.
I
! 2. All fiberglass STEP Tanks Shal qualified installers, following the
mfg. directions and s ured with Tie- with"Dead Men"
Sizing a s for Dead Men and strapping shall be pe Pll���
mendations. �'�
3. Buildings served by STEP Sewer,utilizing on site"back-up"generators for power
outages must have electrical service installed in such a manner that the STEP .
system will also be supplied power by the auxiliary Generator.
4. The Pump Control Panels for all STEP tanks housing 2 or more putnps shall be
fitted with a transfer switch model DT 323 URK as mfg by Cutler Hammer
and a male plug, model 70530 MBWP as mfg by Bryant for use with the cities
portable auxiliary generator.
5. All STEP tanks less than 3000 gallon shall have one 4"hole in the divider baffle
centered at 20" above the floor of the tank. STEP Tanks sized at 3000 gallon shall
have one hole in the divider baffle centered at 26" above the floor of the tank.
6. All `Traffic Bearing' Service Boxes shall be a model MSBC 1324-12 mfg. by
Mid States Plastics BC Series.
7. All posts used to support Pump Control Panels must be Hot Dipped Galvanized
Unistrut.
8. All `Air Release, Vacuum Release and Combination Air Release/Vacuum Release
valves shall be a model D-021 Combination Air Valve"MINI SAAR" sized
according to the mfg. recommendation per pipe size.
10. All STEP tanks housing more than 1 pump must utilize 2"piping for the Service
Line.
11. The maximum depth of bury for all STEP Tanks shall be 60" as measured from
finished grade to the invert elevation of the inlet pipe to the tank.
_ �
The effluent pump shall be of the submersible
turbine type capable of delivering 5 gpm agai
TDH of 105 feet, and with a shut-off head t less
' than 160 feet. Pumps will be provide an�orifice
� i ed in the discharge pipin restrict flow to a
! m�im 9 gpm over ead condition. The
supplier sh o ' a head curve showing
performance of with the orifice installed.
. 4. By
.�
A 1/8" bypass orifice shall be drilled in the dis
head of the pump to allow for cooling pump motor
during periods of no discharge.
B. Duplex Pump Systems and Triplex Pump Systems for 3,000
�allon Tanks or Larger.
1. General - For Discharge to a STEP Collection System
Provide Orenco Model P20 05 11 or approved equal.
Pumps shall be listed by an approved testing
laboratory e.g., UL or CSA for use as an effluent
� pump.
� Pumps shall be stainless steel and/or thermoplastic.
�� • All wetted fasteners shall be 300-series stainless
steel.
� M tors
2. o
Motors shall be permanent split phase-type operating
at 3450 RPM. Motors shall be 1/2 HP, 115 volt,
single phase, 60 Hz. The supplier shall provide a
* head curve showing performance of the pump with
the orifice installed.�
Motors shall be thermally-protected with an
automatic-reset feature.
3. Operating Conditions
The effluent pump shall be of the submersible
turbine type capable of delivering 20 gpm against a
TDH of 105 feet, and with a shut-off head of not less
��
7-44 4/07
SANITARY SEWER
than 160 feet.
,
4. Bypass
� A 1/8" bypass orifice shall be drilled in the discharge
head of the pump to allow for cooling pump motor
',' during periods of no discharge.
7F.030 Pump Vault, Riser, and Lid
A. General
Provide an internal pump vault which will be of sufficient
size and structural integrity to house and support the
' pumping equipment necessary for transportation of
effluent. The pump vault will have a screen to prevent
solids larger than 1/8" from entering the pipeline and to
protect the pump and flow restriction device from
, ,� plugging. The internal vault will be removable for access
into the STEP tank for septage pumping. All risers and
connections to the septic tank with risers shall be water
. tight.
B. Internal Vault
Simplex pump assemblies shall be a Biotube Pump Vault
as manufactured by Orenco Systems, Inc., Model Number
X4S 1254-18 19. Vaults for duplex 4" submersible pump
assemblies shall be a Biotube Pump Vault Model Number
X4D 12�-18 19 as manufactured by Orenco Systems,
Inc., or equal.
C. Risers
Risers shall be required for access to internal vaults and
access into the septic tanks for septage pumping. All
risers shall be constructed of PVC, fiberglass, or
polyethylene and shall be constructed water tight. Risers
over pump vault shall be a minimum of 24-inches in
diameter and shall be of sufficient diameter to allow
removal of internal vaults without removing splice boxes,
� ,� etc. All risers shall be of sufficient length to meet
minimum requirement of the latest version of the National
�' Electric Code (NEC) and shall vary depending on the depth
�� �-
4/07 7-45
�
of bury on the various tanks. The risers shall be attached
to the tanks such that a watertight seal is provided.
Epo� required to adhere the PVC or fiberglass risers to
fiberglass or concrete tanks shall be a two part epoxy as
� supplied by the manufacturer of the riser.
� When applicable, Neoprene grommets shall be installed by
the manufacturer for discharge piping, vent piping and/or
the electrical conduit to assure a watertight seal.
Neoprene grommets will not be allowed on risers not
requiring discharge piping, etc.
Risers shall be Model RR24 (length as required) for simplex
systems and RR30 (length as required) for duplex systems
as manufactured by Orenco Systems, Inc., or approved
equal.
D. Lids
a. Standard Lid: The standard lid shall be a flat
fiberglass lid, green in color, with a non skid
aggregate finish. The lid shall be the diameter
required to fit the required riser and shall be
supplied with a minimum of two stainless steel bolts
and the lid shall have a gasket. Allen wrench will not
be included as part of the pump packages but 2
wrenches will be included in the spare parts. Lids
shall be as manufactured by Orenco Systems, Inc.,
Model Number FL24-4B or FL30G or approved equal.
b. Traffic Bearing Lid: The traffic bearing lid shall be an
HS-20 loading frame and cover. The cover shall have
the word "SEWER" cast into it. Frame and cover for
� 24--inch-diameter lids shall meet requirements of
Section 9-05.15(1) of the Standard Specifications, and
30- and 36-inch lids-(covers) shall be HS-20 and shall
be constructed of aluminum.
7F.040 Internal Splice Box
For applications with 5 or less residential units, each residential
riser requiring electrical connections shall have a PV.0 splice box
located in the interior of the riser. All splice boxes shall be
installed within 1'0" of the riser lid for access purposes. The
splice box shall be complete with cord grips and dual wall heat
1�
7-46 4/07
SANITARY SEWER
shrink with butt connectors. Splice boxes shall be UL listed for
the application. The number of cord grips and heat shrink
connectors shall be equivalent to the number of floats and
electrical leads within the pump vaults. The splice box and
accessories shall meet all requirements of labor and industries
and shall be UL listed for wet locations.
�
� For all Class I, Division I installations more than 5 residential
� units or non-residential applications, risers requiring electrical
; connections shall have two separate splice boxes. All splice
boxes shall be installed within 1'0" of the riser lid for access
purposes. One splice box shall be for the pump wire and one
splice box shall be for the low voltage wire for the float system.
The splice boxes for the pump leads shall meet all requirements
of the Department of Labor and Industries for a Class I, Division
I, Type D gas application. The splice box for the low voltage
float leads on an intrinsically safe relay shall be a non-metallic
PVC splice box. The PVC splice box shall be complete with cord
grips and dual wall heat shrink butt connectors. The number of
cord grips and wire nuts within the PVC splice box shall be
equivalent to the number of floats. The pump wire splice box
simplex assemblies shall be single gang Model SBX-S as
supplied by Orenco Systems, Inc., and the splice box for duplex
assemblies shall be two gang Model SBX-D as supplied by
Orenco Systems, Inc. or equal as approved by the Owner.
Mounting box shall be mounted to riser with stainless steel
bolts. An explosion proof EY fitting shall be provided directly
outside of the mounting box for the pump wire connection. The
pump wires shall be fitted with a watertight plug Model B Model
ECP-2023 as manufactured by Appleton Electric Company or
equal as approved by the Owner.
7F.050 Level Control and Alarm Floats
Level control floats shall be UL or CSA listed for use in effluent
on an adjustable or preset PVC stem which attaches directly to
the pump vault. Floats shall consist of high level alarm, on, off,
and redundant off. Level control floats shall be Model MF-ABT
for simplex pump assemblies and Model MF-A2GT for duplex
pump assemblies and Model MF-A3GT for triplex pump
applications as manufactured by Orenco System, Inc. or equal
as approved by the City.
. 1 and alarm panels for si
assemblies sha e as manufactured
b s, nc. or equal as approve
�� - r
4/07 7-47
mp control panels for simplex commercial
in ically safe applications shall be Model S 1 O
ETMC manufactured by ORENCO or equal.
B. Pump contro d alarm pa�els fo duplex pump
i assemblies shall Model DAXl RO ETMCT as
� manufactured by O co Syst , Inc. or equal as
,. approved by the City.
C. Pump control ai�a alar anels fo iplex pump assemblies
shall be Model TA 3 RO ETM C manufactured by
Orenco Systems c., or equal.
D. All pum ontrol panels shall have NEMA 4x erglass
encl res, an audio and visual alarm, an elapse 'me
er, event counter, stainless steel latch and internal 1
olt, 20-amp circuit breaker.
7F.060 Hose and Valve Assembly
A. Hose and valve assembly for a 4" submersible shall include
1" diameter 100 psi PVC hose with PVC union and ball
valve and anti-siphon valve Model Number HV 100BASX as
manufactured by Orenco Systems, Inc., or approved equal.
7F.070 Additional Material Requirements
All equipment including but not limited to pump vault, riser,
standard lid, bonding epoxy, splice box, discharge piping,
control float assembly, pump(s), pump control and alarm
panels, etc. shall be supplied by one single supplier or
manufacturer as a packaged unit. The supplier or
manufacturer shall upon request by the City, submit
information on availability of replacement parts, maintenance
records of operating pump assemblies. The package as supplied
by the manufacturer or supplier will have a standard guarantee
against rnaterial defect for a period of not less than 1 year. The
date of guarantee shall begin on the date equipment is delivered
on a particular site and may be a single guarantee incorporating
all the components or individual guarantees on the various
components. The manufacturer or supplier will be responsible
to handle replacement or repair of defective parts.
� 7F.080 Electrical Connections .
, - �Lf
7-48 4/07
SANITARY SEWER
All electrical equipment and materials shall be installed in
conformance to requirements of the latest edition of the National
I t Electrical" Code as enforced by the State of Washington Labor `"
i and Industries Electrical Section. The Contractor shall be
required to acquire all necessary perxnits and coordinate directly
with the appropriate authority on the necessary inspection. "
Splice aboxes shall be installed in the STEP tank riser in
accordance with the instruction from the supplier or
manufacturer. The control panel shall be installed either on a
remote pressure-treated 8" x 4" post or on the garage wall,
unless approved by the City of Yelm. The panel shall be aff�ed
by stainless steel wood screws to either the structure or the
post. The wood screws shall be of sufficient size and length to
securely fasten the panel. ,,
Power and control wire from the splice box in the riser to the
pump control shall be UL approved � �'�r°^+ '^"'°' with a
minimum of 12 gauge for each control or power wire. Power
and control wire shall be color-coded for ease of tracing between
the alarm panel and pumps and float switches. The Contractor
shall submit type and size of cable for review and approval by
the City and Labor 8s Industries. Cable attached to the exterior
of the building shall be contained in approved electrical conduit.
All wire connections shall be made with heat shrink butt
connectors.
Power and control wire for commercial or intrinsically safe
applications shall be contained in two IMC or rigid metal
conduits for separation of low and high voltage lines between
the control panel and pump vault and shall meet the
requirements of Labor & Industries.
All exterior electrical wire shall be contained within PVC
conduit.. Exterior conduit and wire will only be allowed on the
exterior of the house directly above or below the control panel
and will be installed plumb and vertical. Underground electrical
cable shall have a minimum of 24 inches of earth cover. All
above ground cable shall be contained in PVC conduit.
Electrical: All materials used for control and electrical
B connections shall meet requirements of labor and industries
and the Uniform Electrical Code.
The Pumping Assemblies shall comply with the latest State of
��
4/07 7-49 .
, .
Washington's Department of Labor and Industries Electrical
Inspection Section Policy.
Power supply to the pump control panel shall be a 20 amp
dedicated circuit for each pump with separate neutral wires. A
dedicated 10 amp circuit shall be required for the control
, system for duplex and triplex pump systems.
Disconnects are required for power to all Pump Control Panels.
Symplex (non I.R.) applications shall us a model B-5V one gang
weatherproof outlet box as manufactured by Intermatic and a
ole itch rated for 20 amp.
Duplex systems (2 pumps) shall use a Deep, one gang outlet box
with 3 threaded outlets Model # DB-75V as manufactured by
Intermatic. The switch shall be a three pole single throw, AC
manual motor starting switch. Model # MS303 as manufactured
by Leviton.
Trip ex systems (3 pumps) shall use 2 Model DB-75V
(Intermatic) boxes and 2 MS303 switches (Leviton). 1 Switch will
disconnect the power to the 3 pumps, and the other switch
disconnects the control circuit.
All disconnect switches shall include a Rayntite single Gang
Weatherproof cover Model # 5031-0 as manufactured by Bell.
Surge arrestors shall be installed in the Pump Conrtrol Panel
For all Class I Division I installations. Surge arrestors shall be a
Model # AG2401 as manufactured by Intermatic, and shall be
installed on the power wire supplying power to the control
circuit, and be installed within the pump Control Panel.
��
7-50 4/07
�
�
� �
a . �� �
PF Series 4 �100 mm �
�
S u b m e rs i b l e Eff i u e n t P u m s Orenco Systam:
� ���o�aa�ed
� B00-348-9843
�
�
� Applications Features/Specifications
,
i Our 4"(100 mm)Submersible Effluent Pumps are designed to To specify this pump for your installation,require the following:
j transport screened effluent(with low TSS counts)from septic • Minimum 24-hour run-dry capability with no deterioration in
, tanks or separate dosing tanks.All our pumps are constructed of pump life or performance*
� lightweight,corrosion-resistant stainless steel and engineered . �,g-inch(3-mm)bypass orifice(patent pending�to ensure flow
plastics;all are field-serviceable and repairable with common recirculation for motor cooling and to prevent air bind
tools;and all 60-Hz PF Series models are CSA certified to the U.S.
aod Canadian safety standards for effluent pumps,meeting UL • �iquid end repair kits available for better long-term cost of
requirements. ownership
Orenco's Effluent Pumps are used in a variery of applications, • TRI-SEALr"'floating impeller design on 10,15,20,and 30 gpm
including pressurized drainfields,packed bed filters,mountls,aer- (0.6,1.3,and 1.9 Usec)models;floating stack design on 50 and
o6ic units,effluent irrigation,effluent sewers,wetlands,lagoons, �5 gpm(3.2 and 4.7 L/sec)models
and more.These pumps are designed to be used with a Biotube° • Super stainless Franklin Electric motor,ratetl for continuous
pump vault or after a secondary treatment system. use antl frequent cycling
• Type SOOW 600-V motor cable(suitable for Class I,Division 1
and Division 2 applications)
— Discharge • Five-year warranty on pump or retrofit liquid end from date of
manufacture against defects in materials or workmanship
C o n n e Ctl o n *Not applrcable for 5-hp(3.73 kW1 models
-� Standard Models
�
� — Bypass See specifications chart,pages 2-3,for a list of standard pumps.
�= orifice For a complete list of available pumps,call Orenco.
�
� �: ' Nomenclature
�
" � �.'", PF 2o c�s❑ � �-❑
���� I Cord length,ft(m):
Blank = 10(3) 20' = 20(6)
— Suction 30 = 30(9) 50 = 50(15)
connection
Voltage,nameplate:
���-,_ : 1 = 115z 200 = 200
� � 2 = 2303 4 = 460
0
E Fre uenc
� y 1 Q sing e-phase 60 Hz 3 =three-phase 60 Hz
� �
� � 5 =single-phase 50 Hz
`� '�a
" � Horsepower(kNn:
n 07 = �hp(0.56) �0 = 1�hp(0�5))
y 15 = 1-Yz hp(1.11) 20 = 2 hp(1.50)
30 = 3 hp(2.24) 50 = 5 hp(3.73)
Nominal flow,gpm(Usec):
10 = 10(0.6) 15 = 15(1.0)
20 = 20(1.3) 30 = 30(1.9)
Powered by 50 = 50(3.2) 75 = 75(4.7)
S�� Franklin Electric pump(PFSeries)
c us
LR80980 'Note:20-foot cortls are available only for single-phase pumps through t-�hp
L R 2053896 Z Y�Z-hp(0.37kWj only
'220 volts for 50 Hz pumps
OO 2012 Orenco Systems�lnc. NTD-PU-PF-1
�� Re¢2.0,OO 01/12
Page 1 of 6
� � 1 1 � 1
Specifications,60 Hz ,
� ` � N^ 's � _ �
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O�i.i 67 d 61 Of /0 CE N L E � 'C
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� Pump Model c� x°Y. a z °> ¢ o m � E 'c � ,� �.� � c
i PFi fl0511 1010.6) 0.5010.37) 1 115 120 12.7 12.7 6 1 '/a in.GFP 23.0(660) i6�406) 26(12) 300
� PFi U0512 10(0.6) 0.50(0.37) 1 230 240 6.3 6.3 6 1 '/a in.6FP 23.0(660) 161406) 26(12) 300
' PF1�053200 10(0.6► 0.5010.37) 3 200 208 3.8 3.8 6 1 %a in.GFP 23.0(660) 16(406) 26(12► 300
i
PF100712°•5 10(0.6) 0.75(0.56) 1 230 240 8.3 8.3 8 1 '/a in.GFP 25.91658� 17(432) 30(14) 300
, PF10073200 4�5 10(0.6) 0.7510.56) 3 200 208 5.1 5.2 8 1 '/a in.GFP 25.4(645) 17(432) 31 (14) 300
PF101D12 5•6 1010.6) 1.0010.75) 1 230 240 9.6 9.6 9 1 '/a in.GFP 27.91709) 18(457) 33115) 100
PF10103200 5•6 1010.6) 1.0010.75) 3 200 208 5.5 5.5 9 1 %a in.GFP 27.31693) 18(457) 37117) 300
PF102012 5•6•'•8 1010.6) 2.0011.49► 1 230 240 12.1 12.1 18 1 '/a in.SS 39.511003► 22(559) 48(22) 100
PF1020325,s,e 10(0.6) 2.0011.49) 3 230 240 7.5 7.6 18 1 '/o in.SS 37.91963) 201508) 44(20) 300
PF10203200 s,s,e 10(0.6) 2.0011.49) 3 200 208 8.7 8.7 18 1 '/a in.SS 37.9(963) 201508� 44(201 300
PF150311 15(1.0► 0.3310.25) 1 115 120 8.7 8.8 3 1 Ya in.GFP 19.5(495► 151380) 23110) 300
PF1 0312 1.0) 0.3 ( .25 1 230 240 4.4 4.5 3 1 %in. FP 19.5 495 151380) 23(10) 300
PF200511 2011.51 0.5010.37) 1 115 120 12.3 12.5 4 1 %a in.GFP 22.3(566) 18(457 25(11� 300
PF200512 20(1.5) . ) 1 230 240 6.4 6. 4 1 %a in.G P 22. 18 57) 26(12) 3
PF20053200 20�1.51 0.50(0.37► 3 200 208 3.7 3.8 4 1'/a in.GFP 22.3(566) 181457) 26(12) 300
PF201012°•5 20(1.5) 1.00(0.75) 1 230 240 10.5 10.5 7 1'/a in.GFP 28.4(721) 201508) 33(15) 100
PF20103200°•5 2011.5) 1.00(0.75) 3 200 208 5.8 5.9 7 1 %a in.GFP 27.81706) 201508) 33115) 300
PF201512"�5 20(1.5) 1.5011.11) 1 230 240 12.4 12.6 9 1 '/a in.GFP 34.0(864) 241610) 41 (19) 100
PF20153200'�5 20(1.5) 1.50(1.11) 3 200 208 7.1 7.2 9 1'/a in.GFP 30.71780) 201508) 35(16) 300
PF300511 3011.9) 0.50(0.37) 1 115 120 11.8 11.8 3 1 '/a in.GFP 21.31541) 201508) 28(13) 300
PF300512 30(1.91 0.5010.37) 1 230 240 6.2 6.2 3 1%a in.GFP 21.3 f541) 20(508) 25(11) 300
PF30053200 3011.9) 0.5010.37) 3 200 208 3.6 3.6 3 1 '/a in.GFP 21.31541) 201508► 25(it) 300
PF300112 30(1.9) 0.75(0.56) 1 230 240 8.5 8.5 5 1 Ya in.GFP 24.8(630) 21 (533) 29(13) 300
PF30013200 30(1.9) 0.7510.56) 3 200 208 4.9 4.9 5 1'/a in.GFP 24.6(625) 21 1533) 30114) 300
PF301012 4 3011.9) 1.0010.75) 1 230 240 10.4 10.4 6 1 '/a in.GFP. 27.01686) 22(559) 32(15) 100
PF30103200° 3011.9) 1.0010.75► 3 200 208 5.8 5.8 6 1 Ya in.GFP 26.4(671) 221559) 33115) 300
PF301512"•5 30(1.9) 1.50(1.11) 1 230 240 12.6 12.6 8 1 %a in.GFP 32.8(833) 24(610) 40(18) 100
PF30153200"�5 3011.9� 1.5011.11) 3 200 208 6.9 6.9 8 1 '/o in.GFP 29.8(757) 22(559) 34(15) 300
PF3015344•5 3011,91 1.5011.11) 3 460 480 2.8 2.8 8 1'/<in.GFP 29.51685) 22�5591 34�15) 300
PF302012 5�6�' 3011.9) 2.0011.49) 1 230 240 11.0 11.0 10 1'/a in.SS 35.51902) 261660) 44(20) 100
PF30203200 5•6 30(1.9) 2.00�1.491 3 200 208 9.3 9.3 10 1 '/a in.SS 34.0(864) 24(610) 41 (19) 300
PF303012 5,s,',e 3011.9) 3.00(2.23) 1 230 240 16.8 16.8 14 1 Y<in.SS 44.511130) 331838) 54(241 100
PF303032 s,fi,e 3011.9) 3.0012.23) 3 230 240 10.0 10.1 14 1 '/a in.SS 44.311125) Z7(686) 52124) 300
Pf305012 5,fi,,,a 3011.9► 5.00(3.73) 1 230 240 25.6 25.8 23 1 Ya in.SS 66.511689) 53(1346) 82(37) 100
PF305032 5•6,8 30(1.9) 5.00(3.731 3 230 240 i6.6 16.6 23 1 '/a in.SS 60.8(1544) 48(1219) 66130) 300
PF305032005�6-g 3011.9) 5.0013.73) 3 200 208 18.7 18.7 23 1 '/a in.SS 60.8(1544) 48(1219) 66130) 300
PF500511 5013.2) 0.50(0.37) 1 115 120 12.1 12.1 2 2 in.SS 20.31516) 24(6101 27(12) 300
PF500512 5013.2) 0.5010.37) 1 230 240 6.2 6.2 2 2 in.SS 20.31516) 24�610) 27(12) 300
PF500532 5013.2) 0.50(0.37► 3 230 240 3.0 3.0 2 2 in.SS 20.31516► 24(610► 28113) 300
PF50053200 50(3.2) 0.5010.37) 3 200 208 3.7 3.7 2 2 in.SS 20.3(516) 24(610) 28(13) 300
PF500534 5013.2) 0.50(0.37) 3 460 480 1.5 1.5 2 2 in.SS 20.3(5161 24(610) 28113) 300
PF500712 5013.2) 0.75(0.56) 1 230 240 8.5 8.5 3 2 in.SS 23.71602) 251635) 31 (14) 300
PF500732 5013.2) 0.7510.56) 3 230 240 3.9 3.9 3 2 in.SS 23.71602) 25(635) 32115) 300
PF50073200 50(3.2) OJ5(0.56) 3 200 208 4.9 4.9 3 2 in.SS 23.1 �587► 261660) 32(15) 300
Continued on next page
NTD-PU-PF-1 OO 2012 Orenco Systems�Inc.
Rev.2.0,�01/12 S�
Page 2 of 6
� ,
� � 1 . 1 � 1
�
� 60 Hz Models �continued)
�
� 400 � 900 ; , ;
� ' p PF3050 PF30 Series 60 Hz,0.5-5.0 hp
,.. 800 •:�., ;..
_.... _. ._......
350 PF2015 _. _ _` enes.60 Hz,0.5 1.5 h'
�I
, ,
� y �
: a� T a� "'
e 300 _.. ,..,. _.._._._ .... _
700 � -'� , . _
� '—
Z PF2010 = 600 '
;_._ .__
� 250 .....,, , �
O
� .. _... ._ ` PF3030
� � � 500 ���.
• __.. _ _._.__..
, .::..:
� 200 __ , . ._ ; :_ _._.. .._ _ _ m ' ;
� z ... :
� ; .� 400 PF3020 _ �
E 150 PF2005 ..,
� •..
� _ _..... �__......._._ eo PF3015
.......
�..
� ••... C � _
� � 300 ...:.. , ,
.° too , __ _ a PF�o�o
_ _ � _ �
.....
�a � ;.... � :._.... _...... ;.....
w . ; .. 200 . ....:.:: .... ,
... ...
l0 1� PF3007 �
50 _ � _ ;
100 PF3005�• .. .,.,
...,._
� __
0 ' ' ;
0 5 10 15 20 25 30 35 40 �0 5 10 15 20 25 30 35 40 45
Flow in gallons per minute(gpmJ Flow in gallons per minute(gpm)
450 , 100
PF5050 ' PF50 Series,60 Hz,0.5-5.0 h ' "" �
p PP7515 � PF75 Series,60 Hz,1.0-1.5 hp
400 ��• _... <. _ . 90 ._.,;.. ;
°� `'• ';. .� 80 _ '�.. �..,.; ,
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O 2012 O�enco Systems�Inc. NTO-PU-PF-1
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XERXES INSTALLATION MANUAL AND OPERATING GUIDELINES
� TABLE OF CONTENTS
SECTIONS
1. Introduction 9. Geotextile Fabric
� 1.1. Safety........................................................................1 9.1. General......................................................................18
I1.2. General......................................................................1 10. Bottom Sumps and Fittings
1.3. Equipment.:...............................................................2 10.1. General......................................................................18
, 2. Handling and Storing Tanks 11. Taking Diameter Measurements
2.1. General..........................................................................2 11.1. General......................................................................18
2.2. Unloading and Hoisting Tanks.....................................2 11.2. Diameter Measurement without a Standpipe........19
2.3. Storing Tanks................................................................3 11.3. Diameter Measurement with a Standpipe..............19
3. Preinsta;lation Inspection and Testing 11.4. Calculation and Comparison...................................19
3.1. General..........................................................................3 12. Ballasting Tanks(Adding Liquid)
3.2. Inspecting the Tank......................................................4 12.1. General......................................................................19
3.3. Pretesting Procedures..................................................4 13. Postinstallation Testing
3.4. Preparing the Tank for Air Testing...............................4 13.1. General......................................................................20
3.5. Pressurizing the Primary Tank.....................................5 13.2. Air Testing Tanks............,..........................................20
3.6. Pressurizing the Interstitial Space 13.3. Optional Hydrostatic Testing...................................20
in a Dry Tank.................................................................5 14. Piping and Venting
3.7. Soaping the Tank..........................................................5 14.1. Internal Piping...........................................................20
3.8. Performing Visual Checks on a Tank 14.2. External Piping..........................................................21
with a Wet Interstitial Space........................................6 14.3. Venting Tanks............................................................27
3.9. Releasing Pressure from the Tank...............................6 14.4. Venting Interstitial Spaces.......................................22
4. Preinstallation Testing For Specific Types of 15. Monitoring Tanks
Air-Testable Tanks 15.1. General......................................................................22
4.1. Air Testing a Single-Wall Tank...................................6 15.2. Single-Wall Tank.......................................................22
4.2. Testing a Wet Double-Wall Tank................................6 15.3. Double-Wall Tank.....................................................22
4.3. Testing a Dry-Monitor, Double-Wall Tank with the 16. Installing Containment Sumps
Interstitial Space Under Vacuum...................................6 16.1. General......................................................................23
4.4. Air Testing a Dry-Monitor, Double-Wall Tank.............7 16.2. Final Containment Sump fnstallation......................24
4.5. Air Testing a Dry-Monitor, Double-Wall 17. Adding Tanks at Existing Locations
Multicompartment Tank Not Under Vacuum.............7 17.1. General......................................................................24
5. Installing Tanks 17.2. Preferred Method.....................................................24
5.1. General..........................................................................8 17.3. Alternate Method......................................................24
5.2. Dry-Hole Installation.....................................................8 18. Operating Guidelines
5.3. Wet-Hole Installation..................................................10 18.1. General......................................................................25
6. Backfil)Material 18.2. Temperature Limits for Stored Products
6.1. General........................................................................10 and Materials.........................................................25
6.2. Primary Backfill...........................................................10 18.3. Entering Tanks..........................................................25
6.3. Secondary Backfill......................................................11 18.4. Filling Tanks(in General)..........................................25
7. Excavation Requirements 18.5. Filling UL-Labeled Tanks.........................................25
7.1. General....................................................................11 19. Limited Warranties
7.2. Excavation and Tank Location................................11 19.1. General......................................................................26
7.3. Depth of Excavation................................................12 20. Supplemental Materials
7.4. Depth of Cover........................................................12 20.1. General......................................................................26
7.5. Tank Spacing...........................................................13 21. Retention of Installation Manual
8. Anchoring Systems 21.1. General......................................................................26
8.1. General........................................................................14
8.2. Rnchor Straps.............................................................14 APPENDICES
8.3. Hardware and Anchor Points....................................15 A. Xerxes Tank Data Chart.....................................................27
8.4. Deadmen.................................................................16 B. Xerxes Primary Backfill Requirements............................28
8.5. Xences Prefabricated Deadmen...............................16 C. Xerxes Split Backfill Instructions.....................................29
8.6. Anchor Slabs...........................................................17
8.7. Man-Out-of-Hole(MOH)Straps..............................17 XERXES TANK INSTALLATION CHECKLIST.........30
8.8. Alternate Wet-Hole Anchoring Method...................17
XERXES INSTALLATION MANUAL AND OPERATING GUIDELINES
Read all instructions and operating guidelines before instailation.
These instructions, which are based on successfui experiences in a wide variety of situations,are issued as a guide for the
instail ation of Xerxes underground storage tanks. Compliance with the procedures and instructions contained in this installa-
tion Manual are necessary for the proper installation of Xerxes tanks. Failure to comply will void the limited warranty for the
tank(s)and may cause tank failure.
� To Installer: Before installation,read and understand the Installation Manual and Operating Guidelines(subsequently referred
� to as I nstallation Manual).After installation,give the Installation Manual with the completed Tank Installation Checklist(back of
manua�to the tank owner.
To Owner:After installation, retain the Installation Manual for future reference to operating guidelines and checklist.
�
I
I 1. INTRODUCTION NOTICE
' �.�. SAFETY NOTICE is used to address practices not related to physical
1.1.1. Before beginning the tank installation, read through the injury.
entire Installation Manual and Operating Guidelines(subse- y.y,6. Keep this Installation Manual available at the installation
quently referred to as Installation Manual). It is the responsibil- site to refer to safety procedures as needed.
ity of the owner, installer and operator to understand and
follow ali requirements contained in this Instaliation Manual. � WARNING
1.1.2.Work must be performed according to standard industry Follow OSHA regulations for tank excavations.Collapse of
practices that may apply to all aspects of tank installations excavation walls could result in death or serious injury.
and operations. 1.1.7.Working in and around excavations is dangerous.The
1.1.3.Cornpfy with all applicable federal, state and local regu- Occupational Safety and Health Administration (OSHA)has
lations and standards,such as: specific requirements that must be followed. Prior to begin-
• federal, state and local construction, health, safety and ning work at the site,the installer must read and understand
environrnental codes OSHA's Standard, Part 1926, Subpart P(Excavations), 650-
• National Fire Protection Association standards{for 652.A copy of this standard is available free of charge at
example,NFPA 30,30A and 31j www.osha.gov.
• industry standard practices(for example, PEI RP100, 1.1.8.Careless activity or reckless operation of equipment can
API RP1615) cause death,serious injury or property damage.
• EPA reference materials(for example, "Doing It Right"). 1,1.9. Federal, state and local codes and regulations always
NOTE:A U.S.federal law{the Resource Conservation and take precedence over a Xerxes requirement.
Recovery Act{RCRA),as amended(Pub. L.98-616))requires 1.7,10.No instructions or procedures presented in this Installation
owners of certain underground storage tanks to notify des- Manual should be interpreted so as to put at risk any person's
ignated state or local agencies by May 8, 1986, of the exis- health or safety,or to harm any property or the environment.
tence of their tanks. Notifications for tanks brought into use
after May 8,1986, must be made within 30 days. Consult �.2. GENERAL
EPA's latest regulations to determine if you are affected by 1.2.1. It is important to follow the procedures and instructions
this law. in this manual in order to safely and properly install a Xerxes
1.1.4. For additional information, contact relevant state, underground storage tank and accessories. Failure to follow
county and city storage-tank authorities, including health,fire these instructions will void Xerxes' obligations under the lim-
or building departments, and environmental agencies. ited warranty, may result in tank failure or property damage,
and could cause serious personal injury or death.
1.1.5.The following definitions will serve as a guide when
reading the Installation Manual: 12.1.1.The presence of a Xerxes representative does not relieve
the installer of responsibility for proper installation of the tank.
� WARNING 1.2.2.The Xerxes limited warranty applies only to a tank in-
Indicates a potentially hazardous situation,which, if not stalled according to these instructions.Since Xerxes does not
avoided,could result in death or serious injury. control the parameters of any installation,Xerxes'sole responsi-
bility in any installation is that presented in the limited warranty,
� CAUTION 1.2.3. It is the responsibility of the owner and operator to al-
Indicates a potentially hazardous situation,which, if not ways follow the operating guidelines set forth in Xerxes'appli-
avoided, may result in minor or moderate injury. cable limited warranty and SECTlON 18 of this Installation
Manual. It is the responsibility of the owner to retain this Instal-
lation Manual for future reference to operating guidelines.
1
� 1.2.3.1.A copy of the applicable Xerxes limited warranty is 1.3.1.11. hand shovel
fountl in the shipping documents that accompany each tank �,3.1.12. lifting siing(s)
when delivered.
1.2.32,A copy of the applicable Xerxes limited warranty is
1.3.1.13. soii compacting equipment(if necessary).
alsa found in some of the applicable product brochures, at 2� HANDLING AND STORING TANKS
www.xerxes.com and upon request from the Xerxes customer
service coordinator. 2.1. GENERAL
1.2.4.Use the Tank Installation Checklist{back of manual)for 2.1.1•Although Xerxes tanks are rugged,the tank owner
� all single-wall tanks(SVV�, double-wall tanks(DV1/), oil/water and/or tank owner's representative must take care so that the
� separators(OWS)and multicompartment tanks(MC}as the in- tank is not dropped or damaged during loading, unloading,
� stallation proceeds. handling and storage at the jobsite.
� 1.2.5.Relevant information for each tank installed must be 2.1.2. Move tanks by lifting and setting only. Do not move
j reco rded on the Tank Instaliation Checklist found at the back tanks by rolling or dragging.
! of th is manual. Consult the Xerxes customer service coordina- 2.7.3.Always lift tanks by using the lifting lugs provided with
i tor if additional checklist forms are needed. the tank. Distribute the lifting load evenly between the lifting
1.2.6.The tank owner should retain a copy of the completed �ugs. Use spreader bars and equai length slings as required.
Tank Installation Checklist in order to facilitate any warranty NOTE: Larger tanks may be provided with guide lugs for at-
claim. tachment of guide ropes during lifting and positioning oper-
1.2.7.Xerxes recommends that the installing contractor also ations. Do not use guide lugs for lifting.
keep a copy of the completed Tank Installation Checklist. NOTICE
1.2.8.Xences must authorize—in writing and prior to tank in-
stallation—any variation to, or deviation from,the instructions Never roll,drag or drop the tank.This may result in damage
to the tank.
in the Instalfation Manual.
2.2. UNLOADING AND HOISTING TANKS
1.2.8.1.All correspondence regarding variations must be re-
tained for any warranty claim to be valid. 2.2.1.Before the tank is unloaded or relocated on the job site(and
before preinstallation testing at the jobsite),tank owner and/or tank
1.2.9. For any questions regarding the interpretation of these owner's representative must complete the following steps:
instructions or for any other technical inquiries, contact techni-
cal support at Xerxes Minneapolis, MN. 2.2.1.1.Visually inspect the entire exterior surface of the tank
to make sure that no shipping or handling damage has oc-
1.2.10.All contact information applicable to installation is curred. Look particularly for visible damage, cracks or deep
found on the back cover of this manual. scrapes.
1.3. EQUIPMENT 2.2.1.2. Sign the shipping papers accepting the tank as deliv-
1.3.1. The following list is to be used as a guide for the equip- ered.Any damage observed must be noted in these papers.
ment recommended for installing Xerxes tanks: 2.2.1.3. Be sure that all equipment used to lift the tank is rated
1.3.1.7,excavation equipment capable of producing a level to handle the load.
bottorn hole and placing backfill material at any point in the 2,2,1.4.Select a smooth,solid,level area on which to place the
excavation tank,and clear that area of all large rocks,trash and debris.
1.3.1.2.suitable lifting equipment capable of lifting and placing 2 2 7.5.Make sure that all tools and other items that may dam-
the tanks and associated tank anchors age the tank during unloading are removed from the trailer bed.
1.3.1.3, spirit level or transit 2.2,2.When unloading the tank from the truck,tank owner
1.3.1.4. 50-foot tape measure and/or tank owner's representative must make sure that the
tank is secured in such a way that it does not roll off the truck.
1.3.1.5.tamping rod(s)
NOTE:A long wooden shovel handle is satisfactory. � WARNING
1.3.1.6. pipe wrenches and appropriate pipe joint compound Do not release straps securing the tank to the truck until lift-
ing equipment(such as a crane)is secured to the tank's lift-
1.3.1.7. a test manifold for each air-testable tank or compart- ing lug(s)and until anyone in a position to be injured by the
ment—see FIGURE3-2 tank's movement is in a safe location. Failure to do so could
result in death, serious injury or property damage.
1.3.1.8. source of pressurized air capable of 6 psig
2.2.3.When hoisting the tank,follow these instructions—see
1.3.1.9, soap and water solutian(during freezing conditions, a FIGURE 2-1 and FIGURE 2-2:
suitable solution such as windshield wiper fluid may be added
to the soap and water mixture) 2.2.3.1.Choose suitable lifting sling(s)for the tank being installed.
1.3.1.10. soft cloth, brush or hand-held pneumatic sprayer
2
, ,
2.2.3.2.iNhen using multiple lifting lugs,the angle of the lifting ways take extra care so that the bottom sump or fitting is not
sling should never exceed 30 degrees—see FIGURE 2-1. darnaged by contact with any other object, such as the truck
bed or the ground.
2.3. STORING TANKS
2.3.1.Whenever a tank is temporarily placed above the
ground at the site, place it on a smooth,solid, level area that is
� clear of large rocks,trash and debris,and then chock it in
place to prevent rolling.See FlGURE 2-3.
j ,A WARNING
� Always chock the tank.The tank is heavy and has a large
j surface area.The tank will roll on sloped surfaces and could
j be blown about by the wind. Mo�ement of the tank could re-
�, sult in death or serious injury.
3o-degree 2.3.2.Tie the tank down if high winds are expected. Do not
maximum use wire rope or chains.See FIGURE 2-3.
2.3.2.1. Never place tie-down straps over collars or reservoirs.
FIGURE 2-1
2.2.3.3.When the tank is not rotated(the tank is upright), use Tie
all lifting lugs to unload and instali the tank.See FIGURE2-2.
Downs
2.2.3.4.Some tanks are rotated on the truck for shipping pur- Sandbags Tank Tires
poses.These tanks have extra lifting lug(sj to aid in the load- ; �
ing/unioading process.See FIGURE 2-2. ` f �
�
2.2.3.4.1. To unload these tanks, use the lifting lugs that are �,..,r�-f',,%
situated on top of the tank in its rotated position. , � ''./ �';F
2.2.3.4.2. To install the tank, carefully rotate the tank to its up- '`�f '���`�'�`�''''�`'f' '������''��'""
right position and then use all lifting lugs situated on top of the FIGURE 2-3
tank in its upright position.See FIGURE 2-2. 2.3.3.Whenever a tank is temporarily placed above the
ground at the site, always take extra care so water does not
enter the collar.Xerxes recommends that the tank be rotated
Top of tank in rotated position and/or the collar covered.
Lifting lugs to be � Lifting lugs to be
used when tank is in �used when tank is in NOTICE
upright position rotated position �f water enters the collar, it could freeze and may result in
� " -� � damage to the tank and/or collar.
,�� 2.3.4. Ensure that the tank is UV-protected if it wilf be stored
�� above the ground for an extended period of time,typically 12
� months depending on the geographic location of installation.
Top oftank in upright position
� 3. PREINSTALLATION INSPECTION
Liftinglugstobe AND TESTING
used when tank is in
`�,� upright position 3.�. GENERAL
\\\
%��
� � WARNING
\ Do not conduct preinstallation testing while the tank is on a
�+ trailer. Failure to follow this warning could result in death or
� serious injury.
FIGURE 2-2 NOTICE
2.2.4. Do not wrap chain or cable around the tank at any time, Do not put product in the tank until all necessary preinstalla-
including when securing the tank on the ground. tion inspection and testing is completed. Failure to follow
this notice may result in property damage.
2.2.5. Use guide ropes to guide the tank when needed.
2.2.6.When handling a tank with a bottom sump or fitting,al-
3
i
3.1.�.The applicable inspection and testing procedures set 3.3.2. if the tank being installed is not an air-testable tank,pro-
fort.h in SECTIONS 3 and 4 must be performed to validate the ceed to SECTION 5.
limi-ted warranty. 3.3.3.See SECTIONS 3.4. through 3.9. for specitic instruc-
3.1. 2.All tanks are tested and inspected at the factory prior to tions for preinstallation testing procedures.
shipment. However, in order to verify the absence of any dam- 3.3.4.See SECT/ON 4 for preinstallation testing instructions
age resulting from shipping or handling, prior to installation all for specific types of air-testable tanks.
tanl�s must also be inspected at the site. Some tanks must
alscr be tested at the site prior to installation according to the 3.3.5.Someone must be with the tank at all times during air
app licable procedures. testing.
3.3.6. Prior to the pressure test, remove aii plugs,apply
� WARNING sealant,and replace and tighten plugs.
Always secure the tank before moving,rotating or lifting it.
This is commonly done by connecting a crane or backhoe to � WARNING
j the tifting lugs. Failure to follow this warning could result in
! death or serious injury. When the tank is under pressure,the manways,access
! openings and/or fittings may dislodge,or the tank could
' � WARNING rupture,and this could result in death or serious injury. Be-
fore beginning the air test, notify all people on the test site
Whif e moving or lifting the tank,do not position any part to remain in a safe location. NEVER LEAVE A TANK UNDER
of yaur body underneath the tank. Failure to follow this PRESSURE UNATTENDED.Stand clear of manways,fittings
warning could result in death or serious injury. and tank ends during the test.
� WARNING 3.4. PREPARING THE TANK FOR AIR TESTING
Do n ot lift or hoist a tank under pressure.Failure to follow 3.4.1.The air test pressure is 5 psig(3 psig for 12-foot-diameter
this warning could result in death or serious injury. tanks}.See FIGURE3-1.
3.1.3. Not all tanks are air-testable in the field. If a tank needs � WARNING
to be hydrostatically tested,see SECTION 13.3. Do not overpressurize the tank.Position the pressure gauges
3.1.4. If the tank is a water/wastewater tank equipped for op- so that the pressure readings can be clearly read at all times.
tionaf preinstallation testing, after inspecting the tank(see The pressure gauge must have a pressure-relief valve that is
SECTION 3.2.), follow procedures in the Xerxes sup,nlement, used and set at 6 psig(4 psig for 12-foot-diameter tanks).Fail-
ure to follow this warning could result in death or serious injury.
Preinstallation Testrng lnstrucfions for Water/Wasfewater Tanks
Factory-Equipped for Pressure Testing. See SECTION 20 for �I�II_ _��)
information on how to obtain this supplement. _� II !II `
3.1.5. If damage of any kind is detected,contact the plant ����� _����!
from which the tank was shipped before installing the tank. =I II) �����_
NOTE:Do not attempt unauthorized repairs. IIIII � �_�����
=����� �����-
3.2. INSPECTING THE TANK (����_�� Maximum �f_ ����
5 psig
3.2.1. Thoroughly inspect the entire outside surface of the tank °IIIII ��1� _
for signs of shipping or handling damage. Rotate or lift the �����-��� ��,-����)
tank to inspect the bottom of the tank. =IIIII � ( °—
3.2.2. If damage of any kind is detected, contact the plant II I =I I = � �
from which the tank was shipped before installing the tank. _�III'----- — -----��I��—
° _ = — = = ° = �
NOTE: Do not attempt unauthorized repairs. Note: Maximum is 3 psig for 12-foot-diameter tanks.
3.3. PRETESTING PROCEDURES
NOTICE FIGURE 3-1
3.4.2.The tester is responsible for verifying that all of the test
Do not install any piping or fittings other than test fittings equipment is in good working condition, and is properly con-
until all preinstallation testing has been completed. Failure figured and calibrated.
to follow this notice may result in property damage. 3.4.3. Construct a test manifold with two pressure gauges as
NOTICE shown in FIGURE3-2. Each pressure gauge must have a max-
imum full-scale reading of 15 psig with graduations in 1/2 psig
Never pressurize a wet interstitial space.Doing so may re- increments,and a pressure-relief valve set at 6 psig (4 psig for
sult in damage to the primary tank and/or tank failure. 12-foot-diameter tanks).
3.3.1.All UL-labeled tanks, chemical tanks and potable water 3.4.3.1.When air testing multicompartment tanks, a test mani-
tanks must be air tested after backfill is brought close to the fold is needed for each compartment. See FIGURE 3-2.
top of the tank.
4
NOTE: Do nnt attempt unauthorized repairs.
to air supply •
on interstitia� 3.6. PRESSURIZING THE INTERSTITIAL SPACE
test manito�d IN A DRY TANK
� air-supply valve
air-pressure gauge--► � air-pressure gauge � �NARNING
--pressure-relief Never lift or hoist a tank under pressure.Failure to follow
device this warning could result in death or serious injury.
FIGURE 3-2 NOTE: Do not attempt unauthorized repairs.
� NOTE:All compartments on a double-wall tank may be man- 3.6.1.Tanks with a d mterstitial s ace not shi
ifolded together and tested simultaneously, or each com- n' P pped under vac-
� partment may be tested separately.
uum come with a quick-disconnect assembly.See FIGURE3-3.
3.4.3.2.Atest manifold is needed for testing the dry interstitial ;-----------��
space of an air-testable,double-wall tank.See FlGURE 3-2. Nylon tie—_ ; i
;
' NOTE:A test manifold is not required for a tank with an in- � ;
terstice filled with monitoring fluid. � ----------- '
;�
3.4.4. During air tests,ambient air temperature can affect �'�
pressure-gauge readings. Monitoring access ;�
fittin �' Quick-disconnect
9'�-- _�:.................assembly
� CAUTION
Allow for pressure variations when tanks are subject to �
abrupt ternperature changes. Failure to follow this caution
may result in minor or moderate injury.
FIGURE 3-3
3.4,5.When testing tanks with wet monitoring, remove the 3.6.2. If the tank is not configured as shown in FIGURE 3-3
reservoir-fitting plug. prior to preinstallation testing, contact the p�ant from which
3.4.6. If the tank has threaded fittings, it is the installer's re- the tank was shipped.
sponsibility to select a thread sealant that is compatible with 3.6.3.The quick-disconnect assembly must not be connected
the product being stored. Some sealants cannot be used with to the service fitting when air testing the primary tank. Keep
some stored products. the nylon tie in place.
3.4.7. Install permanent plugs in all openings where piping will 3.6.4. Maintain the pressure in the primary tank.
not be installed.
3.4.8. Make sure all manway bolts are tightened, and fitting NOTICE
plugs are properly doped and sealed. Do not connect the air supply directly to the interstitial-
space monitoring access fitting.Pressurizing the secondary
3.4.8.1.The tank may be air tested with the factory-supplied tank(interstitial space)by itself may damage the primary
temporary plugs. Redope and tighten temporary plugs if tank or cause tar�k failure.
needed. 3.6.5. Free the hose from the service fitting by cutting the
3.4.9. Keep one service fitting open in each compartment for nylon tie.
the test manifold. 3.6.6.Insert the hose into the quick-disconnect fitting.This will
3.4.10.Tanks equipped with flanged nozzles may require con- allow air to transfer from the primary tank to the interstitial space.
tractor-supplied blind flanges for preinstallation air testing. 3.6.7. Reconnect the air-supply line.Allow the pressure to sta-
3.5. PRESSURIZING THE PRIMARY TANK bilize at 5 psig(3 psig for 12-foot-diameter tanks)by adding or
3.5.1.Install the test manifold in the open service fitting and con- removing air as necessary.
nect the,�ressure source to the test manifold.See FIGURE 3-3. 3.6.8. Close the air-supply valve on the test manifold and dis-
3.5.2. If the interstitial space is dry, install the test manifold connect the air-supply line.
and close the valve before pressurizing the primary tank. 3.7. SOAPING THE TANK
3.5.3.Open the air-supply valve and pressurize the primary tank 3.7.1.After pressurizing the tank, soap the tank to check the
to 5 psig(3 psig for 12-foot-diameter tanks).Allow a few min- tank's integrity.
utes for the air temperature in the tank to stabilize,then allow 3.7.1.1.Soap either the fittings, manways and covers or the
the pressure to st2bilize by adding or removing air as necessary. entire exterior of the tank, depending on what part of the test-
3.5.4. Hold and monitor the pressure for a minimum of 1 hour. ing process the tester is at and what kind of tank is being air
3.5.4.1. If the test manifold shows a pressure build-up in the
tested.See SECTION 4 instructions for specific types of tanks.
interstitial space of a dry-monitor, double-wall tank, contact 3.7.1.2.Watch for active air bubbles.There should not be any.
the plant from which the tank was shipped.
5
s
NOTE: During freezing conditions,a suitable solution such NOTICE
as windshield washer fluid may be added to the soap and
water mixture. Never allow the pressure in the interstitial space to be
greater than the pressure in a primary tank. Failure to follow
3.7.2.When doing a soap test, rotate the tank to check the this notice may result in damage to a primary tank and/or
bottom. Do not rotate a tank filled with monitoring fluid. tank failure.
3.7.2.1. Before rotating the tank, place protective material on � WARNING
the area on which the tank will be rotated. Make sure the area Never remove the service-fitting plugs when there is pres-
is flat and free of large or sharp objects, such as rocks,which sure in the tank. Failure to follow this warning could result in
� may damage the tank. death or serious injury.
� 3.7.2.2. Rotate the tank slowly and carefully to avoid develop- 3.9.4. Remove the test manifolds and replace the protective
� ing too much momentum. Momentum can grow because covers in the service fittings.
manways and fittings on top of the tank make it top heavy.
� Make sure the tank's fittings and manways never touch the 4.. PREINSTALLATION TESTING FOR
� ground. Do not rotate the tank more than 120 degrees from SPECIFIC TYPES OF AIR-TESTABLE TANKS
� the initial starting point.
NOTE:When air testing a tank,follow the procedures out-
, 3.7.3. If damage is detected, contact the plant from which the lined here for the specific type of tank being installed. For
tank was shipped. more specific details on these procedures, see the SECTION
NOTE: Do not attempt unauthorized repairs. 3 SECTIONS to which you are referred.
3.8. PERFORMING VISUAL CHECKS ON A TANK 4.1. AIR TESTING A SINGLE-WALL TANK
WITH A WET INTERSTITIAL SPACE 4.1.1. Prepare the tank for air testing.See SECTION 3.4.
NOTICE 4.1.2. Pressurize the tank.See SECTION 3.5.
Never pressurize a wet interstitial space. Doing so may 4.1.3.Soap the entire exterior of the tank.See SECTION 3.7.
damage the primary tank or cause tank failure. 4.1.4. Hold and monitor the pressure for a minimum of 1 hour.
NOTICE 4.1.5. Carefully release the air pressure from the tank.See
Never rotate a tank filfed with monitoring fluid. Doing so SECTlON 3.9.
may result in damage to the tank and/or tank failure. 4.1.6. Remove the test manifold and replace the protective
3.8.1. Check that the tank has monitoring fluid in the reservoir. covers in the service fittings.
Measure the level of the monitoring fluid in the reservoir. 4.2. TESTING A WET DOUBLE-WALL TANK
NOTE: If the reservoir is less than a third full,contact the
plant from which the tank was shipped.See the back cover NOTICE
of the Installation Manual for contact numbers. Never pressurize a wet interstitial space.Doing so may re-
sult in damage to the primary tank and/or tank failure.
3.8.2.Visually check the interior of the tank for monitoring
fluid.There should not be any. 4.2.1. Check the level of the monitoring fluid in the reservoir.
See SECTlON 3.8. for instructions.
3.8.2.1. When checking a multicompartment tank, inspect the
interior of each compartment for monitoring fluid. 4.2.2.Visually check the interior and the exterior of each com-
partment for the presence of monitoring fluid.See SECTION
3.8.3.Visually check the exterior of the tank for monitoring 3.8. for instructions.
fluid. (The monitoring fluid is dyed blue to distinguish between
moisture and monitoring fluid.)If monitoring fluid is found,wipe 4.2.3.If the monitoring fluid is not at the proper level,and/or moni-
the tank dry and verify that the monitoring fluid does not reap- toring fluid is found on either the interior or the exterior of any
pear. Lift the tank to check the bottom. Do not roll the tank. compartment,contact the plant from which the tank was shipped.
3.8.3.1.When checking a multicompartment tank, inspect the 4.2.4. If there is no monitoring fluid on either the interior or the
exterior of each compartment for monitoring fluid. exterior of any compartment, proceed to backfill the tank to
the top of the tank.
3.9. RELEASING PRESSURE FROM THE TANK
3.9.1. If there is an interstitial space to pressurize, open the 4.2.5.After the tank is backfilled to the top of the tank, it must
valve of the test manifold and carefully release the air pressure be air tested.See SECTION 13 for instructions.
in the interstitial space first. 4.3.TESTING A DRY MONIT�R, DOUBLE-WALL TANK
3.9.2. If the tank is a multicompartment tank, carefully release �H THE INTERS1Tf1AL SPACE UNDER VACUUM
the air pressure in the end compartments first. 4.3.1.A dry-monitor, double-wall tank may be shipped from
the factory with the interstitial space under vacuum.This op-
3.9.3.Then carefully release the air pressure from the base tank. tion allows for monitoring the tank during shipping and han-
dling, and may expedite tank installation by shortening
6
�ireinsta�lation testing procedures.The date that the vacuum 4.4.9. Remove the test manifold and replace the protective
was app lied is on a label by the monitor or on the shipping covers in the service fittings.
documentation delivered with the tank. 4.5.AIR TES1lNG A DRY MONITOR, DOUBLE-WALL
4.3.1.1.�his date ma be used as a reference under this ro-
Y P MULTICOMPARTMENTTANK NOT UNDER VACUUM
cedure to evaluate the tank's integrity prior to installation, and
to validate Xerxes'obligations under the limited warranty. NOTICE
4.3.1.2.Xerxes tanks shipped under vacuum must be under po not connect air supply directly to the interstitiai-space
vacuum for a minimum of 7 days. If this requirement is not met, mnnitoring access fitting. Pressurizing the interstitial space
by itself may result in damage to the primary tank and/or
an air/soap test is required.See SECTION 4.4, for instructions. tank failure.
� 4.3.1.3.The tank shipped under vacuum should be installed 4.5.1. Prepare the tank for,air testing.See SECTION 3.4.
I and backfilled with the vacuum intact if both of the following
I two conditions are met: 4.5.1.1. Install a test manifold in each compartment,that is, in
' the base tank and each end compartment.See FIGURE 4-1.
4.3.1.3.1. installation of the tank is to begin 7 days or more
after the factory application of vacuum (as indicated on the
shipping documents and/or tank labels) Typicaf Lifting
Optional reservoir manway ��9 Typical Monitoring access
4.3.1.3.2. the vacuum gauge shipped with the tank reads 12 (wet interstitial space) W�th fittings , seroice fitting fitting(dry
\ intershtial space)
inches of inercury or more. Pressure- / \, �`� ;� `,�
relief valve �
NOTE:Under certain field conditions(such as major for shipping���� 1 �
changes in temperature, barometric pressure and/or alti- (End � gase tank �End �
�\Compartment � Compartment '
tude)and/or with certain equipment failure(such as freezing j �
•� �
or sticking of gauge mechanism),the vacuum-monitoring ��� �Flat
method may not be an accurate enough test.When in '� � ` Rib
! Seam for base tank �•
doUbt,or When such Conditions occur,Xences reCOmmends Seam for end compartment Seam for end compartment
SECTl011f 4.4.or 4.5. (whichever is applicable)as the pre-
ferred preinstallation test procedure.
FIGURE 4-1
4.3.1.4.After the tank is backfilled to the top of the tank,the 4.5.2. Pressurize the primary tank of the base tank.See SEC-
tank must be air tested.See SECTION 13 for instructions. TION 3.5 and FIGURE 4-2.
4.3.1.5. If either or both of the conditions stated in POINTS
4.3.1.3.1. and 4.3.1.3.2. are not met,follow the procedures of Air Test of Primary Tank
SECTION 4.4. or 4.5. (whichever is applicable)for the prein-
stallation test. �o 0
4.3.1.5.1. If the gauge reads less than 12 inches of inercury,
perform a visual inspection of the exterior of the tank and the
vacuum gauge fittings to evaluate the tank's integrity,and
contact the plant from which the tank was shipped.
FIGURE 4-2
NOTE: Do not attempt unauthorized repairs. 4.5.3. Pressurize the end compartment(s).See SECTION 3.5.
4.3,1.6. Record the vacuum gauge reading at the time of in- and FIGURE 4-3.
stallation on the Tank lnstallatron Checklist.
4.4.AIRTES�TINGADRY-MiON�TOR,DOl)BLE Wi4LLTANK Air Test of End Compartment(s)
4.4.1. Prepare the tank for air testing.See SECTION 3.4.
4.4.2. Pressurize the primary tank.See SECTION 3.5.
4.4.3.Soap all service fittings and manways.See SECTION 3.7.
4.4.4. Hold and monitor the pressure in the primary tank for a
minimum of 1 hour. FIGURE 4-3
4.4.5. Use the quick disconnect assembly to pressurize the in- 4.5.4. Soap all service fittings, manways and covers.See
terstitial space.See SECTION 3.6. SECTION 3.7.
4.4.6. Soap the entire exterior of the tank.See SECTlON 3.7. 4.5.5. Hold and monitor the pressure for a minimum of 1 hour.
4.4.7. Hold and monitor the pressure in the interstitial space 4.5.6. Use the quick-disconnect assembly to pressurize the in-
for a minimum of 7 hour. terstitial space.See SECTION 3.6. and FIGURE 4-4.
4.4.8. Carefully release the air pressure from the tank.See
SECTION 3.9.
7
. ,
system (if used}and geotextile fabric(if used).See SECT/ONS
Air-test Monitoring of Secondary Tank 7.2., 7.3.and 7.4.
(dry interstitial space)
°° O0 �' 5.2.4.2.When preparing the excavation,allow for the appropri-
ate depth of cover as specified in SECTION 7.4.
5.2.4.3. If two or more tanks are to be installed in the same ex-
cavation hole, follow instructions in SECTlON 7.5.
FIGURE 4-4 5.2.4.4. If the tank has a bottom sump or fitting, prepare the
4.5.7.Soap the entire exterior of the tank.See SECTION 3.7. excavation hole according to instructions in SECTION 70.
4.5.5.Hold and monitor the pressure for a minimum of 1 hour. �•2•5. Remove all loose material from the excavation.
4.5.g.Carefuliy release the air pressure from the tank.See 5.2.6. Where necessary, levei the bottom of the excavation
� SECTION 3.9. using primary backfill material,filling in any low areas.See
� SECTION S for backfill requirements.
4.5.10.Remove the test manifolds and repiace the protective
� covers in the service fittings. 52.7. If an anchor slab is needed, install it now.See POINT
7.5.3.3, and SECTION 8.6.
'�, 5. INSTALLING TANKS 5.2.8. If geotextile fabric is to be used, p�ace it in the excava-
� tion hole at this time.See SECTlON 9.
WARNING
5.2.8.1. Geotextile must be piaced to separate the primary
If product is used as ballast,exercise special care in han- backfill material from all other in situ soil and/or secondary
dling.Safeguard against sparks,fire or product spilis. Im-
proper handling of product could cause a fire or explosion backfill material.
and could result in death or serious injury. 5.2.9. If deadmen are used,see SECTION 8 for information on
� WARNING deadmen placement and place them now.
do n ot use air pressure to test tanks that contain or have 5.2.9.1. If deadmen are used and they are to be placed so that
contained flammable or combustible liquids or vapors.The they are in the bedding or below the bottom of the tank, place
fuel and air mixture could explode and could result in death the deadmen before preparing the backfill bedding.
or serious injury.Tanks should be air tested before ballast-
ing. See SECTION y2. 5.2.10. Prepare a 12-inch-thick smooth, level bed of approved
primary backfill material on the bottom of the excavation. See
NOTICE SECTION 6 for backfill requirements.
Adequately ballast the tank(add liquid}in a wet hole or in a NOTICE
dry hole that may become wet(for example,from site runof�
until the installation is totally completed. Failure to do this If anchor straps are used, bedding must be carefully leveled.
may result in damage to the tank and/or surrounding property. Failure to follow this notice may result in straps being too
5.�. GENERAL short or too long, and may result in property damage.
5.1.1. Take safety precautions throughout the entire instal�ation 5.2.10.1. If the excavation has soft soil conditions or if there
process.See SECTIONS 1.1.and 7.1. might be difficulties controlling water accumulation, it is ac-
ceptable to increase the bedding thickness to 18 inches and
5.1.2. Use only approved backfill material. See SECTION 6. set the tank anchors 6 inches off the bottom of the excavation
5.1.3. Do not mix approved material together with sand or in (9 inches for 10-foot-diameter tank deadmen).
situ soil. 5.2.11.See SECTION 2 regarding the use of lifting lugs to
5.1.4. Do not use in situ soil as primary backfill material. hoist the tank when unloading and installing it.
5.1.5. Typically, all excavated in situ soil must be replaced with 5.2.12. Place the tank or tanks onto the bed.
primary back�ill material. 5.2.12.1.If deadmen are in place,center the tanks between them.
5.2. DRY HOLE INSTALLATION NOTICE
5.2.1. Before beginning tank installation,take a tank diameter
measurement.See SECTION 11 for instructions, Do not set tanks directly onto a concrete slab,timbers,
cradles or in situ soil.Failure to follow this notice may result
5.2.2. Record this measurement as Measurement#1 on the in damage to the tank.
Tank Installation Checklist. 5.2.12.2.Align the tanks with anchors for proper placement of
5.2.3. Locate the excavation site according to instructions in anchor straps.
SECTIONS 7.i.and 7.2. 5.2.12.3.As the tank is being placed,slope the tank according
5.2.4. Prepare the excavation according to instructions in to site specifications.
SECTION 7. NOTE:Xerxes does not require that a tank be sloped.The
5.2.4.1.When preparing the excavation, allow for an anchoring slope is determined by the tank owner's specifications.
8
• r
5.2.12.3 .1.Sioping of tanks may affect accuracy of calibration NOTICE
charts.
Do not use metal probes. Failure to follow this notice may
5.2.12.3.2.If a double-wali tank is sloped, the monitor should result in damage to the tank.
be at the low end in a tank with a dry interstitial space and at NOTE:An object like a long wooden shovei handle is a prac-
the high entl in a tank with a wet interstitial space.See SEC- tical choice as a tamping rod.
TION 15 formore information.
5.2.13.Usethe tops of the ribs to establish longitudinal level. NOTICE
Establish la�eral level by placing the level across the top of a Do not strike the tank with the tamping rod. Failure to heed
fitting or a manway. this notice may result in damage to the tank.
5.2.14. If anchor straps are to be used, install them at this 5.2.17.Repeat POlNTS 5.2.16. and 5.2.16.1. with a second lift
time. See SECTION 8.2. of approximately 12 inches of primary backfill.
,� 5.2.14.1, The locations for anchor straps are marked on tank 5.2.18.After the second lift of materiaf has been placed and
' ribs by th e arrowhead symbol ►�I(on the tank itself on 4-foot- worked under the tank, bring the backfill to the top of the tank.
diameter tanks). 5.2.18.1. Place backfill material evenly on opposite sides of
5.2.14.2. All marked anchor strap locations must have straps. the tank so that the tank does not shift.
NOTICE 5.2.19. If secondary backfill material is to be used on the
perimeter of the installation, it must be placed and compacted
Do not place straps between ribs. Failure to properly place at the same time as the primary backfill material.
straps may result in damage to the tank.
5.2.14.3. Place a strap on each marked location and install an- 5.2.20. During the backfi�ling process, it is good practice to
choring h ardware.See SECTlON 8.
continue to check tank deflection.
5.2.14.4.-fighten each anchor strap until it is snug over the rib NOTICE
(over the tank itself in 4-foot-diameter tanks) but causes no Thoroughly hand tamp backfill to eliminate all voids under
deflection of the tank. Straps must be uniformly tight. the tank. Do not allow the tank to shift during the backfill
procedure.If there are voids under the tank and/or the tank
5.2.14.5.The elevation of deadmen is critical. If a strap ap- has shifted(and the backfill is above one-quarter(1/4)of the
pears too short or there is not sufficient adjustment in the turn- tank diameter), it may be necessary to remove and reinstall
buckle to make the strap snug,the tank and/or tank anchors the tank. Failure to follow this notice may result in damage
must be repositioned by adding or removing backfill material to the tank and/or property damage.
until the straps are properly installed. 5.2.21.After backfill has been brought to the top of the tank,
NOTE: Make sure that the minimum bedding thickness of take another tank diameter measurement. Record it as Meas-
12 inches has been maintained. urement#3 in the Tank Installation Checklist, and determine
whether tank deflection is within the allowable limits shown in
5.2.14.6.After the straps have been installed and tightened,take a TABLE 11-7.
tank diameter meaaurement to check tank deflection,and record it
as Measurement#2 on the Tank Installation Checklist. 5.2.22.All UL-labeled tanks,chemical tanks and potable water
tanks must be air tested after backfill is brought close to the
NOTICE top of the tank.
Overdeflection of the tank may result in damage to the tank. 5.223. If additional testing(postinstallation testing for air-
5.2.15. On water/wastewater tanks with bottom fittings, piping testable tanks or optional hydrostatic testing)is to be done,
needs to be installed at this time.
perform those tests now.See SECTION 13 for instructions.
5.2.16. Place approximately 12 inches of primary backfill 5.2.24.Typically,the tank should be ballasted at this time.See
around the bottom of the tanks between the ribs(if present) SECTION 12 for instructions.
and under the end domes. 5.2.25. If piping and/or venting needs to be installed, complete
5.2.16.1. Use a nonmetal tamping rod long enough to reach this work now.See SECTION 14 for instructions.
beneath the tank to push material under the tank body and 5.2.26. If containment sumps need to be installed, do that
domes until solid resistance is felt, all voids are filled and the now.See SECTION 16 for instructions.
tank is fully supported.See FIGURE 5-1. 5.2.27. Continue to backfill to grade, or to subgrade if rein-
— 11—�(llf forced concrete or asphalt is to be installed.
Right II�I�_ Wrong IIIII- 5.2.28.When the tank has been backfilled to subgrade(but
i III—III�) �II—I�I�� before placement of reinforced concrete or asphalt),take the
�� ` IIIII= IIIII- �ast required tank diameter measurement. Record it as Meas-
I�II u IIIII ,III=�illl urement#4 and determine whether tank deflection is within
_ _ _ =�����- _ _ =�����-
_ _ _-- — — — — = the allowable limits shown in TABLE 17-1.
FIGURE 5-1
9
. �
5.2.28.1.Subtract Measurement#4 irom Measurement#1 and record 5.3.8.Proceed with POINTS 5.2.13. through 5.2.23. of the dry-
it as 1he Deflection Measurement on the Tank Installation Checklist. hole installation instructions.
5.2.29. Install reinforced concrete or asphalt, if used, at this 5.3.9. Ballast the tank once the backfill is even with the top of
time.See SECTION 7.4. the tank.See SECTION 72.
5.2.29.1.The cover depth must meet the appropriate minimum 5.3.10.Proceed wrth POINTS 5.2.25. through 5.2.37. of the
specified in SECTION 7.4. dry-hole installation instructions.
� 5.2.Z9.2.All backfill that is to be compacted must be compacted 6. BACKFILL MATERIAL
with a hand-guided,vibrating-plate,mechanical compactor.
5.2.30,If the tank has a monitoring system, after backfilling is 6.�. GENERAL
completed and after top slab is in place(if used), pertorm nec- 6.1.1.Xerxes tanks shall be installed using select rounded
� essary monitoring checks.See SECTION 15. stones or crushed stones as primary backfill material.See
SECTION 6.2. for definition of primary backfill material.
; 5.2.31.Complete the Tank Installation Checklist.
� 6.1.2.Alternatively,Xerxes tanks shall be installed using pri-
5.3_ WET HOLE INSTALLATION mary backfill vertically up to at least 75 percent of the tank di-
� 5.3.1.Follow the dry-hole installation instructions(SECTlON ameter and secondary backfill above the primary backfill. See
5.2.)with the modifications listed below. SECTION 6.3. for definition of secondary backfiil and Xerxes
5.3.2.Perform POINTS 5.2.1. through 5.2.4.4. of the dry-hole Split Backfi(I lnsfructions,APPENDIX C, for more information
instaf lation instructions. regarding this aiternative.
5.3.3.Before performing POINT 5.2.5. of the dry-ho�e installa- 6.1.3. Using backfill material other than that specified in
tion instructions, pump water from the excavation hole and POINTS 6.1.7.and 6.1.2. without prior written authorization
continue pumping to maintain minimum water level during from Xerxes will void Xerxes'obligations under the limited
tank instaliation.
warranty.
5.3.3.1,Attempt to maintain the water level below the top of NOTICE
the bedding materials until the tank can be fully backfilled and Using other than specified backfill material may cause tank
ballasted. failure,or may result in damage to the tank and/or surround-
5.3.4. Proceed with POINTS 5.2.5. through 5.2.9.1. of the dry- �ng property.
hole installation instructions. b.2. PRIMARY BACKFILL
5.3.4.'I.In high-water conditions, when Xerxes' preferred Man- 6.2.1. Primary backfill material must meet the following speci-
Out-of-Hole(MOH)anchoring method is not available or pos- fications:
sible,see SECTION 8.8. for an alternate method. 6.2.1.1. Material is to be clean,free-flowing, and free of dirt,
5.3.5. Proceed with POINTS 5.2.70. through 5.2.12.3.2. of the sand, large rocks, roots,organic materials, debris, ice and
dry-hole installation instructions. snow. Backfill material shall not be frozen or contain lumps of
frozen material at any time during placement.
5.3.6. In high-water conditions,where it is not possible to
maintain the water level below the top of the bedding material 6.2.1.2.An important characteristic of good backfill material is
during the entire installation, partially ballast the tank to firmly hardness or stability when exposed to water or loads. Most
seat the tank into the bedding material and to keep it from materials have no problem meeting the hardness requirement.
floating.See SECTION 12 for instructions. Materials like soft limestone, sandstone, sea shells or shale
should not be used as backfill because they may break down
5.3.7.The ballast level in the tank must either be lower than over time.
the backfill material or less than 12 inches above the water
level in the hole.See FIGURE 5-2. 6.2.1.3. When using select rounded stones,they must con-
form to the specifications of ASTM C 33, size numbers 6,67
IIIII= Liquid in tank must not exceed =����� or 7. See FIGURE 6-1 and Xerxes Primary Backfill Require-
i����� water in hole by more than 12" ����= ments,APPENDIX B, for additional information on backfill ma-
IIIII- -11111 terial specifications.
-IIIII IIIII°
IIIII=1 1=11111
=IIIII - Ilill° Rounded Stone Crushed Stone
II II° - --- - II-lIIII
=11111 ---- 11111=
IIIII-111 - -- - II-11111
=11111 -- - -- 11111=
11111=1111���,, � � - flll°IIII!
= IIII= — — — — =� =III I= Size numbers 6,67,7 Size numbers 7,8
_ _ _ = I = �_ _ = ;
FIGURE 5-2
FIGURE 6-1
10
, s
6.2.1.4,LVhen using select crushed stones,they must con- 7. EXCAVATION REQUIREMENTS
form to the specifications of ASTM C 33,size numbers 7 or 8.
See FIGURE 6-1 and Xerxes Primary Backfill Requiremenfs, � WARNING
APPENDIX 8, for additional information on backfill material Follow OSHA regulations for tank excavations.Collapse of
specifications. excavation walls could result in death or serious injury.
6.2.2.Xerxes recommends that the supplier of backfill material ],�. GENERAL
provides written certification that the material conforms to 7,1,1,The instaliing contractor must take all necessary pre-
ASTM C 33,ASTM D 448,AASHTO M 43, and any other appli- cautions in or near a tank excavation.These precautions
cable specifications. should include but are not limited to the following:
6.2.3.If pnmary backfill material which meets these specifications 7.1.1.1. Locate and protect any utility installations near the ex-
is not available,contact technical support at Xerxes Minneapolis, cavation before opening the excavation.
MN,for information on alternate materials,installation instructions
for alternate materials and the process for approval. 7•1•�•2• Secure the walls of the excavation.
I 6.3. SECONDARY BACKFILL 7.1.1.3.Prevent exposure to hazardous fumes from the excavation.
6.3.1.Material is to be clean,free-flowing,and free of large 7.1.1.4.Avoid hazards associated with water accurnulation in
rocks,roots, orga�ic materials, debris, ice and snow. Backfill the excavation.
material shall not be frozen or contain lumps of frozen material 7.1.1.5. Erect barricades, etc.,to prevent unauthorized vehicle
at any time during installation. or pedestrian traffic.
6.3.2. Material must be compacted to achieve a minimum of 7.1,1.6. Inspect, a minimum of once a day,the excavation and
85 percent standard proctor density. surrounding area during the entire installation process.
6.3.2.1. Do not use rammer-type compactors over the top of 7 7 2 For additional information on excavation,trenching and
the tank.
shoring safety practices,consuit OSHA's Standard, Part 1926,
6.3.3. Material must be installed in 12-inch to 24-inch lifts Subpart P(Excavations),650-652; and "Fall Protection Rules
compatibie with the compaction equipment used. and Regulations."
6.3.4. In some conditions,frost heave may be encountered 7.1.3.The minimum clearance dimensions given in this section
when using secondary backfill.Therefore, consider any frost- are important to the successful installation of a tank.
related problems that may occur. 7.1.3.1.Additional clearances may be necessary due to fed-
6.3.5.Specifications for secondary backfill material and com- eral, state or local regulations,safety requirements or opera-
paction above the filter fabric may be determined by the tional requirements. Follow all applicable regulations and
requirements of the piping,surface slab or roadway. safety practices.
6.3.6. Refer to applicable codes or standards for base course 7.7.3.2. For additional requirements and specifications, con-
and sub-base course material and compaction requirements. sult ali applicabie federal, state and local codes and regula-
6.3.7.The following are examples of acceptable secondary
tions.See SECTION i for additional information.
backfill material: 7.2. EXCAVATION AND TANK LOCATION
6.3.7,1.clean native backfili 7.2.1.Xerxes recommends that the tank owner seek the advice of
a local foundation professional engineer to determine the proper
6.3.7.2. coarse sand or gravel. placement of a tank excavation near any existing structure(s).
6.3.8. One hundred percent(100%)of all backfill material must
pass through a 1-inch sieve. NOTICE
6.3.9.Install a layer of geotextile filter fabric over the entire surface �mproper placement of the excavatian may result in damage
of primary backfill material before secondary backfill is placed.See to the tank and/or property damage.
SECTION 9 for information regarding geotextile fabric. 7.2.2.The tank owner and/or the owner's technical represen-
6.3.9.1.All joints in the filter fabric must be overlapped a mini-
tative is responsible for determining the proper placement of a
mum of 12 inches.
tank excavation.
6.3.9.2. Geotextile fabric must overlap onto the tank and exca- 7�2•3. In general terms,the size of the excavation is deter-
mined by:
vation surface a minimum of 12 inches.
6.3.10.See Xerxes Split Backfill Instructions,APPENDIX C, for 7.2•3.1.the number of tanks to be installed
more information regarding this aiternative. 7.2.3.2.the size of the tanks to be installed.
7.2.4.The location of a tank can be affected by the location of
nearby structures.When selecting a tank site, care must be
taken to avoid undermining the foundations of existing struc-
tures or new buildings to be constructed.See FIGURE 7-1.
11
. ! '
7.3.4. Excavations must allow for 12 inches of backfili be-
tween the bottom of the tank and the bottom of the excava-
Footing tion or the top of the anchor siab(or any other stabilizing
� materials used).See POJNT 7.5.3.3. and SECTION 8.6.
Shadow of �III=1111=11 IIIII-1i!II=1111�-Illil=llill€ 7.3.5. If either an anchor slab or other stabilizing material is
-1111f IIIIi.. IIIII-111I� IIIII-11111-1_=
45-degree angle lilll Ilill=ll tlllll iilli IIIii -IIII IIIII= used, allow additionai depth in the excavation to accommodate
�=IIIII=IIIII- °IIIII-IIi�°',I!II-111II-P their construction.
�
�IIIiI 11111=11 IIIII IIIII IIIII lilil pll_I=
� �I—IIIII I 11111-111�1 I'11-11111 f'�
�II�i I�III �I��I �II�iI Ilill Ii�ll' 7.3.6.Typicaily, no additional depth of bedding is required for
� II'',°Ilill ��_ � =11111 Ilill-11111=1�� the use of a deadman anchoring system.
� Tank IIIII yt , � � IIIII lIIII 11111-
'°°�' � , °�0 °°�-� 7,4. DEPTH OF COVER
a�,�� � � € � iiui iiii��
) t a ��t a�1��` ��{3itT'`'���i ����� i'�.
i � �� �� ��;i �� � �a� a� mii_ � CAUTION
�
� 3 � � , , !a , 3 , i
� ,- ,
� +, � , ' In both traffic and nontraffic installations,no truck or equip-
' � � �� a � �' � �,;' � �� ' �� ment loads are allowed over the tank until the backfill is at
� � � ,
the minimum specified requirements. Failure to follow this
FIGURE 7-1 caution may result in minor or moderate injury, and/or dam-
7.2.4.1. Ensure that downward forces from loads carried by age to#he tank.
the foundations and supports of nearby structures{con- 7.4.1.Xerxes recommends that every site be thoroughly evalu-
structed before or after tank installation)are not transmitted to ated for the potential of a rise in the local water table or of trapped
the tanks. water(a wet-hole condition).Sufficient overburden and/or an ap-
7.2.5.Typically,the way to check the placement of the tank in propriate anchoring system must be present to offset buoyancy of
relationship to a nearby structure is to do the following: the tank in such conditions.
7.2.5.1. Determine the depth of burial needed for the tank. NOTICE
7.2.5.2. Locate the footing of the structure to be considered. Failure to provide sufficient overburden and/or an appropri-
ate anchoring system may cause tank failure,or may result
7.2.5_3. Determine the line that wou�d fall into the ground from in damage to the tank and/or surrounding property.
a 45-degree angle drawn downward from the corner(s)of the
footing of the foundation that is closest to the tank. 7•4.2.The tank owner or the owner's technical representative
is responsible for determining sufficient overburden and/or ap-
7.2.5.4.The tank must not fall within the"shadow"of the propriate anchoring system.
45-degree-angle line drawn from the foundation's footing.
See FIGURE 7-1. 7.4.3.The minimum depths of cover dimensions given here are
important to the successful installation of a tank.They may not
7.2.5.5. If the tank would fall within this"shadow," do one of be sufficient to counteract bouyancy in wet-hole conditions.
the following to ensure that the tank does not fall within the
"shadow": 7.4.3.1.Additional depths of cover may be necessary due to
federal, state or local regulations,safety requirements or oper-
7.2.5.5.1. Move the tank away from the existing building. ational requirements.
7.2.5.5.2. Move the foundation of the building to be con- � N/ARNING
structed away from the tank.
In a nontraffic installation, ensure that the area above the
7.2.5.5.3.Deepen the footing of the planned building's foundation. tank is not subjected to traffic or other types of loads, which
7.3. DEPTH OF EXCAVATION could cause damage to the tank,and could result in death
or serious injury.
7.3.1. Typically,the depth of the excavation is determined by:
7.4.4.Tanks not subjected to traffic must have a cover depth
7.3.1.1.groundwater conditions of 12 inches of backfill.See TABLE 7-1.
7.3.1.2,traffic at the site 7.4.5.Tanks subjected to traffic must have a cover depth of
7.3.1.3.soft or uneven excavation base one of the following:
7.3.1.4,codes and regulations. 7.4.5.1. 36 inches of backfill
7.3.2.Groun�water must be considered if the level of water in 7•4.5.2. 18 inches of backfill and 6 inches of reinforced concrete
the ground may rise above the bottom of the tank at any time 7.4.5.3. 18 inches of backfill and 8 inches of asphalt.
during the life of the tank.
7.4.6.See TABLE 7-1 for minimum requirements for tanks
7.3.3.Traffic loads are considered to be loadings for highway other than petroleum tanks.
vehicles up to H-20 or HS-20 as defined in the AASHTO Stan-
dard Specifications for Highway Bridges.
12
. s
Depth of Cover 7.5. TANK SPACING
Minimum Requirements for Tanks 7.5.1. GENERAL
Other than Petroleum Tanks 7.5.1.1.The following are minimum spacings and must be in-
No Traffic creased as needed to accommodate deadmen or anchor
• 12" backfifl slabs.See SECTION 8.
7.5.1.2.Always provide sufficient clearance to allow the dead-
Traffic Options men to be set outside ot the tank"shadow."See FIGURE 7-2.
• 36" backfill
• 18" backfill+6"reinforced concrete I�_
• 18" backfill+8"asphalt
i Tank Shadow
� NOTE�The maximum burial depth for standard tanks is 7 _(��!
� feet of cover over the top of the tank. � �_
TABLE 7-1 IIII=I
=����
7.4.7.Tank owner must follow NFPA 30 and 31, as a minimum, I III-I
for petroleum tanks.See TABLE 7-2 for those requirements. -� _ �
I(II�IIII . . '- . ` -
=111= �- °", k
Depth of Cover I!I-i I= -:) fl- - - =
M inimum Requirements for Petroleum Tanks = _ _ -
No Traffic Options 2 x Width
• 2a��backfill Width(See TABLE 8-4)
• 12"backfill+4"reinforced concrete
• 12"backfill+6"asphalt FIGURE 7-2
7.5.2. SPACING IN STABLE IN SITU (NATIVE)
Traffic options $OIL CONDITIONS
• 36"backfill 7.5.2.1.The minimum spacing between the sidewall or endcap
• 18"backfill+6"reinforced concrete of the tank and the side of the excavation must be 18 inches.
• 18"backfill+8"asphalt See FIGURE 7-3.
NOTE:These are NFPA 30 and 31 requirements. NOTE:All measurements from the tank sidewalls are to be
taken from the outside diameter of the tank ribs.
TABLE 7-2
- „ -
7.4.8.The maximum burial depth for standard tanks is 7 feet '`��-�'�� '
,,,,,,,,,._...._,__,
of cover over the top of the tank. However,tanks can be de- = li �
signed for a deeper buriaL =� � ����
7.4.8.1. Call your Xerxes representative for a special c�uotation
prior to tank purchase if the burial depth is to be greater than =�g° �g�� 18^
7 feet. -- " °
7.4.8.2. If you are installing a tank and need to consider a
deeper burial than that given for the tank that was ordered,con- - �� 18" i8"
tact your Xerxes representative to discuss available options. -
I �II I II =1i= � -- I -' =II� '1�1=Il�i
7.4.8.3. Prior written authorization from Xerxes is required to Stable So�l ' "f I i __�)�lj= =
_ • ���_� ; �•� -- -- � -- _-
deviate from a standard tank's maximum burial depth. - - _ - _ = _
7.4.9.Surface asphalt and concrete pads must extend a mini- FIGURE 7-3
mum of 12 inches beyond the tank in all directions. 7.5.2.2. If two or more tanks are installed in the same hole, allow
7.4.10. If there is an unattached riser, it must not transmit load for at least 18 inches between the tanks.See FIGURE 7-3.
from the concrete slab to the tank.A minimum space of 6 7.5.2.3. If two or more tanks are installed in the same hole and
inches must exist between the bottom of the riser and the top deadmen are used,the space between the tanks must be
of the tank, equai to or greater than twa times the width of the deadman
7.4.11.Traffic loads from the top slab must not be transmitted or deadmen required between the tanks. See FIGURE 7-2 and
to a containment sump or a riser.A minimum space of 3 TABLE 8-4.
inches must exist between the riser or sump and the slab.See 7.5.2.3.1. For instance,the space between tanks using dead-
SECTION 16. men is typically 24 inches for tanks up to and including 8-foot-
diameter tanks,36 inches for 10-foot-diameter tanks,and
72 inches for 12-foot-diameter tanks.
13
. >
7.5.3. SPACING !N UNSTABLE IN SITU 8.2. ANCHOR STRAPS
(NATIVE SOIL) CONDITIONS 8.2.1. GENERAL
7.5.�.1.Xerxes recommends that the tank owner seek the ad- 8 2 1 1 Only Xerxes anchor straps may be used when anchor-
vice of a local foundation professional engineer if the in situ ing a Xerxes tank.
soil is extremely soft or inherently unstable(for example, peat,
quicksand, muck, landfill, soft or highly expansive clay, under- 8•2•1.2•Xerxes has two anchor strap models{not including
ground stream, etc.). man-out-of-hole straps)—D-ring/hook anchor straps and D-
ring/D-ring anchor straps.
7.5.32. If the soil has less than 750 Ibs./sq.ft.cohesion as
calculated from an unconfined compression test;or in soils 8•2•1•2•1. Depending on which type of anchor strap is being
having an ultimate bearing capacity of less than 3,500 Ibs./sq. used,see eifher SECTION 8.2.2. or 8.2.3.
� ft.;orwhere soil will not maintain a vertical wall,the excava- 8.2.1.3.The locations for anchor straps on each tank are
; tion rnust allow a minimum space equal to one-half(1/2)the marked on the tank ribs by the arrowhead symbols ►� (on
� diameter of the tank between the excavation wall and both the the tank itself on 4-foot-diameter tanks).
� side and the endcap of the tank to enhance lateral resistance. $,2.2. D-RING/HOOK ANCHOR STRAPS
� See FIGURE 7-4.
8.2.2.1.When installing any size tank,and when using Xerxes'
D-ring/hook anchor straps and Xerxes' prefabricated dead-
— men, the deadmen are to be placed so that the tap of the
_ — ��2 deadmen is even with the bottom of the tank.See FIGURE 8-1
— Tank
- Dia. and TABLE 8-1 for anchor-point dimensions.
1=I I -
_ = 18"
i 1�__ _IIIII Position strap clip at tank top =IIIII
�i��'� lllll- c IIIII-
-IIIII , I- IIIII
'— � 1/2 Tank Dia. U2 Tank Dia. I I I I I=I I I I I I =
= _ '_. =IIIII � �I=IIIII
Unstabie5oil �- — �_ � �h�� �����=�� � ����� _
- =11111 B III-11111
----�----
FIGURE 7-4 IIIII=III � IIIII =
7.5.3.3.Stabilizing materials,such as a reinforced concrete =I IIII I A II II= I II II
slab, rnay be required under the tank as a foundation in addi- IIIII=IIII s° s � I��II=
tion to the required 12-inch bedding in an excavation where ° 3" 12"Deadmen 'e°
IIIII- e a = _ = e -IIIII= IIIII
thebottomisunstable. IIIII=IIIII=IIIII_IIIII=IIIII=IIIII=IIIII=IIIII=
7.5.3.4.The spacing between adjacent tanks is to be at least _I I I I I=I I I I I=I I I I I=I I I I I=I I I I I= I I I I I=I I I I I_ I I�I I
18 inches.See FIGURE 7-4.
7.5.3.5.If deadmen are used, follow the spacing requirements FIGURE 8-1
between the tanks given in POtNTS 7.5.2.3.and 7.5.2.3.1.
Anchoring Dimensions for FIGURE 8-1
8. ANCHORING SYSTEMS Tank Dia. A B c D min. D max.
8.1. GENERAL a� is�� 13° s�-a° z7�� so��
__------ ------- - --------- -------
8.1.1.The tank owner or the owner's technical representative is 6' 26" 10" 13'-5" 42" 48"
responsible for determining an appropriate anchoring system. g� 26" 20" 17'-70" 52" 58"
8.1.2.Xerxes recommends that every site be thoroughly evalu- 7 p� 2g�� 34�� 23�_g° 6.g�� �5��
ated for the potential of a rise in the local water table or of 12� 2g�� qg�� 2��_g�� g7�� 93"
trapped water(a wet-hole condition). Sufficient overburden
and/or an appropriate anchoring system must be present to TABLE 8-y
offset buoyancy of the tank in such conditions. $.2.3. D-RING/D-RING ANCHOR STRAPS
8.2.3.1.When installing any size tank, and when using Xerxes'
NOTICE D-ring/D-ring anchor straps and Xerxes' prefabricated dead-
Failure to provide sufficient overburden and/or an appropri- men, the deadmen are to be placed so that the top of the
ate anchoring system may cause tank failure,or may result deadmen is even with the bottom of the tank.See FIGURE 8-2
in damage to the tank and/or surrounding property. and TABLE 8-2 for anchor-point dimensions.
14
. x
applicable).Refer to drmension "D"in TABLE 8-1 or TABLE 8-2.
IIIII Position strap clip at tank top �_=II I�I Align(within a tolerance of t1 inch)all anchor points with the
IIIiI= marked arrowhead symbols rr) on the tanks.
— c IIIII=
__IIIII , -- --` I _ III�I 8.3.6. Use only appropriately sized hardware with the strap
;� � ' ���.� eye.See FIGURE 8-3 for dimensions of strap eye.
�����-= � ;, - �����=
� -=IIIII- ;' ' '�, !I=III!I � CAUTION
II I I I-= I I ___I _ _�' "-�I I(I -- Oversized hardware may damage the strap eye and may result
� =I I I I I ','+ I �; I�I=I I I i I in minor or moderate injury.
,\ ,� g _—
IIIil-- 111 �;�. � i - IIIII-
� =I I�I I \��, / A I I I(=I I I I I Galvanized Strap Eye
( ��, D (side view)
. (II�I _=I_IIi_ -"" � I_I_I.II...= Galvanized Strap Hook
-- °°° 12" Deadman °:• � (front view) 1 3/8"
,:.:__— - ---....
IIIII __ �se_ _ - - a =IIIII IIIII
_ _ ' _
_..
III�I.=I_IIII-lilll:_=�IIII._IIIII (III.II.._.=IIII�=IIIII..= 31/4" ` "
_ � _ � _ =I = �_ _ _ � 1 3/8" �
FIGURE 8-2 ��
+
Anchoring Dimensions for FIGURE 8-2
Tank Dia. A B C D min. D max. FIGURE 8-3
--...---
4' 18" 12" 8'-4 iia" 27" 30" 8.3.7.When connecting the end of an anchor strap to the
6' 23" 13" 12'-1" 42" 48" anchor point,common methods are those shown in FIGURE 8-4:
S' 31" 15" 15'-1" �° 58�� A)using a drop-forged turnbuckle, B)using a looped wire
rope, C)using a combination of both A and B,and D)using
10' 45" 15" 18'-8sia" 69" 75" the hook end of the strap.
------------- ---- - ------ ----
12' S0" --23'---- 22'-6 3/4" 87" 93"
TABLE 8-2 C
8.3. HARDWARE AND ANCHOR POINTS
8.3.7.When Xerxes-supplied anchoring hardware is not being
used,the installing contractor is responsible for providing
hardware and anchor points of sufficient size and strength for B
the tank being installed. A
8.3.2.Anchoring hardware must be manufactured to industry
standards and dimensions, and sized according fo TABLE 8-3.
Tank Minimum Turnbuckle Diameter Minimum �
Diameter (by Type) Wire-Rope
Hook ; Jaw Eye Diameter
4' 3I4" 1/2" 1/2" 3/8"
�
6' 314" � 1/2" 1 l2" 3l8"
.b.,...: . ..6.,....: .b.. . . d.,.,.;
'p;..:..D �q�.... ..O 'O'._�..:'..:D:. 'O'..'..,..a
8' 1 1/4" 3/4" 3/4" 1/2" o:.::.: o:::. o:::.: o:.::.:
>
a:. ....:.a b........:.o 0 0
�;:0...P::O.. ..:o:,'.'p.•0, 0.:.:�p:�_0; O:,;�P�.:Q,
n. q
_...__._ ._._.._ t ....._____ ______-_ .___.. .'_-__ "—'_"_ . . . .
.___...__. . _ _
10' 11/4" ' 3l4" 314" 1/2" k.b �: °�:°': a
_....---- i------- -____-------------.
12' 1 1/4" � 3/4" 3l4" 1/2" FIGURE 8-4
TABLE 8-3 8•3.8. If using a wire rope,refer to recommendations of wire-
8.3.2.1.All exposed metal on the anchoring system must be rope manufacturer and supplier, and foliow accepted industry
coated or galvanized to protect against corrosion. standards when selecting, using,attaching or connecting wire
rope.See FlGURE 8-4, FIGURE 8-5 and FIGURE 8-6.
8.3.3.The particular configuration of hardware will be determined
by the contractor,the owner or the owner's representative. $•3.8.1.The installer is responsible for using appropriate and
approved engineering practices when fastening wire rope.
8.3.4. If hardware being used is not provided by Xerxes, con-
tact the hardware manufacturer or supplier for specific infor- $•3.9.When fastening wire rope,use a minimum of 2 clips for a
3/8-inch wire rope and 3 clips for a 1/2-inch wire rope on each
mation on hardware and its use. termination.See TABLE 8-3 ior mrnimum wrre-rope diameter.
8.3.5. Locate the anchor points as shown in FIGURE 8-1 or 8-2 g 3.10.Turn back from the thimble the exact amount of wire
(whichever is applicable)and TABLE 8-7 or 8-2(whichever is
rope specified by the manufacturer of the clips used.
15
. ,
8.3. 11.Apply the first clip at a distance from the dead end of $.4. DEADMEN
the wire rope that is equal to the largest width of the ciip used. g.4.1.A deadman is typically a reinforced concrete beam and
See FIGURE 8-5. shouid be designed according to the applicable American
Concrete Institute code.
is'ciip 3rd Clip 2nd C��P 8.4.2.The length of a deadman is typically equal to the length
Live End Thimble of the tank.
8.4.3. Deadmen may be installed in multiple sections as long
` ' as the total length of the assembled deadman is appropriate
� for the installed tank,and as long as each section contains at
Dead End Loop least two balanced anchor points,
� 8.4.4. The width and thickness of a deadman depends on the
� FIGURE 8-5 tank diameter,water-table height, number of containment
� 8.3.7 2,For each cii a l a U-bolt over the dead end of the
, P� PP Y sumps and burial depth.
' wire rope. See FIGURE 8-5.
8.4.5.See TABLE 8-4 for typical deadmen dimensions for
NOTE:Live end rests in the saddle. Xerxes tanks(other than 10-foot-diameter tanks with a capac-
8.3.i 3.When only 2 clips are required, apply the second clip �ty greater than 25,000 gallons), given the following scenario:
as close to the loop or thimble as possible.See FIGURE 8-5. an empty tank,a 3-foot burial depth, groundwater to grade,
and one containment sump.
8.3.14.When more than 2 clips are required,apply the second
clip as close to the loop or thimble as possible,turn nuts on the Typical
second clip firmly, but do not tighten initially.See FIGURE 8-5. Tank Diameter Deadman Dimensions
8.3.15.When more than 2 clips are required,space additional
(Width x Depth)
clips equally between the first 2,take up rope siack and 6� 12"x 12"
tighten nuts on each U-bolt evenly. $' 12"x 12"
8.3.16.Tighten all hardware uniformiy and follow the manufac- ��� �$„X 9„
turer's torque specifications. Double-check the tightness once
the anchoring system is complete. �2' 36"x 8"
8.3.17.If forming a loop in the wire rope, a splice is required
for connecting the two ends together. TABLE 8-4
8.3.17.1. Standard rigging practice for splicing wire rope calis
for using twice the number of ciips recommended for a single- $•4.5.1. If tanks are instalied with any conditions different from
end termination.
those identified in POINT 8.4.5, and/or if tanks are 10-foot-
diameter tanks with a capacity greater than 25,000 gallons,
8.3.17.2. Use a minimum of 4 clips for a 3l$-inch wire rope the installation may require either a deeper burial or deadmen
and a minimum of 6 clips for a 1/2-inch wire rope. larger than those shown in TABLE 8-4. Contact technical sup-
8.3.17.3. Place the rope ends parallel to each other and install Port at Xerxes Minneapolis, MN,for further information.
the clips as shown in FlGURE 8-6. 8,4.6. Lay the deadmen in the excavation parallel to the tank
and outside of the tank"shadow."See FIGURE 7-2.
318"Wire Rope 8.4.7. In installations where two or more tanks are instafled
t Live End Dead End-- USlllg CI88CI171211:
.r—Load - � 8.4.7.1. a separate anchor point must be provided for each
SSs�,� ..>..,� ,L . �.�. �:
` �'�,. �� anchor strap
�����
8.4.7.2.the minimum spacing between the tanks must be
�Dead End Live End—� equal to or greater than the width of the deadman used for the
tanks
1/2"Wire Rope
8.4.7.3. each tank will have its own set of deadmen, however,
<------ ------�ive End----- --------oead e�d------>� one deadman may be used between two tanks if the deadman
E—Load ����� ��- is double the width of the single deadman specified for tanks
���>��S'�` ��-' �" �..
` � in SECTION 7.
�` V - ���
�: Dead End Live End-> $•5. XERXE$ PREFABRICATED DEADMEN
8.5.1.Xences-supplied prefabricated deadmen are pre-engi-
neered and sized to the tank ordered.As with any deadmen,
FIGURE 8-6 water-table height, number of containment sumps and burial
depth must be considered.
16
' 8.�.2. For placement of Xerxes prefabricated deadmen,see
F/GURE 8-1 or 8-2(whichever is applicable)and the Xenres
supplemenf, Prefabricafed Deadmen installation Instructions.
Anchor point
8.5.3.Xerxes prefabricated deadmen are supplied with 3/4-
inch-diarneter, galvanized, adjustable anchor points.These -______ _____ _____
anchor points protrude up through the slots in the deadmen
and are held up with temporary supports. 12"bedding material 15"
� WARNING ,
� Only use the anchor points when lifting and positioning the �'> Concrete slab
deadmen.A spreader bar may be required to lift longer sec- �___...__..______._________..__.._.__
� tions of deadmen.Use guide ropes to guide the deadmen
when lift ing. Failure to do so could result in death or serious
a injury.
FIGURE 8-7
� 8.5.4. Useone anchor point per strap end and only one strap
� per anchor point. $,7, MAN-OUT-OF-HOLE (MOH) $TRAPS
8.5.5.The anchor points can be moved and positioned to 8.7.1.The Xerxes man-out-of-hole(MOH)strap system is de-
match the anchor strap locations marked by arrowhead sym- signed for use in installations where water is in the excavation
bols ►�+1 on the tank rib(on the tank itself for 4-foot-diameter and/or where personnel may not enter the tank hole.
tanks).
8.7.1.1.This strap system can be, but need not be, used in
8.5.6.When using these deadmen in man-out-of-hole strap conjunction with Xerxes deadmen.
applications, align the anchor points with the proper ribs be-
fore setting them in the hole. 8.7.2.When using the MOH strap system,the placement of
components is criticai.See fhe Xences supplement, Man-Out-
8.5.7. Keep backfill from entering the anchor-point slot until of-Ho1e(MOH)Straps lnstrucfions.
final adjustment is made.
8.8.ALTERNATE WET HOLE ANCHORING METHOD
8.5.8.The deadmen are to be butted together when multiple 8.8.1. In wet-hole installations,when Xerxes' preferred man-
sections are used.
out-of-hole anchoring method is not available or possible,the
8.6. ANCHOR $LAB$ following method may be used:
8.6.1.An anchor slab is a reinforced concrete base and should g,g,y,1, Place the anchor strap between the wire rope and the
be designed according to the applicable American Concrete tank so that the wire rope is never in direct contact with the tank.
Institute.
8.8.1.1.1.The H-shaped positioning clips around the strap are
8.6.2.The total length of the slab must be at least the same as designed to accommodate the wire rope on top of the strap as
the length of the tank. shown in FIGURE 8-8.
8.6.3.The minimum slab thickness is 8 inches.
8.6.4.The width of the slab depends on the tank diameter.The
slab must extend a minimum of 18 inches(12 inches for 4-
foot-diameter tanks)beyond each side of the tank. ^��°" ��
8.6.5. Provide a separate anchor point for each anchor strap. � �
8.6.6.All anchor points must be engineered to withstand the �
tank's buoyancy forces. �
8.6.7.Refer to FIGURE 8-7 for anchor-point height.Refer to
3
TABLE 8-7 or TA6LE 8-2 for other anchor-point dimensions. �,
8.6.8. When using a concrete anchor slab,allow sufficient �-,b
s^ a�W
depth in the excavation for 12 inches of bedding material be- � � ='���'
tween the tank and the anchor slab.See FIGURE 8-7. �"
8.6.9.Anchor points must extend 3 inches above the bedding.
With a 12-inch bedding,the anchor point is 15 inches above
the slab. FIGURE 8-8
NOTE: If a turnbuckle is used with a 4-foot-diameter tank,the 8•8•1•2• Loop a wire rope around the deadman at each rib
anchor point must be 3 inches below the top of the bedding. marked with an arrowhead symbol i� (at each marked loca-
tion on 4-foot-diameter tanks).
8.8.1.3.Secure the termination of the wire rope.
17
� 8.8_1.4. Lower each deadman to the bottom of the excavation
using the wire rope.
�__. —__...�
8.8. 1.5.Center each anchor strap on each location marked � i
withan arrowhead symbol ►r1. __,_;__
i
8.8. 1.6. Bring the live end of each wire rope up to the top of . d�`�i���' ,� �
the tank at each marked location. b�^� /��-_
� m4 , �
8.8,1.7.Take the slack out of each wire rope and splice the �
' termination of the wire ropes on top of the tank.
�
� 9. GEOTEXTILE FABRIC
; 9.'f . GENERAL \ �
� 9.1.'I.Geotextile fabric allows the passage of water in and out �_;_____ � ____
I e°qap4pq°.��:e p4°?,a,y' w 3°��'='�'y°�+'�,
of the excavation but prevents the migration and mixing of in : ;�•• _____.__ ______,______ .•:,;�-g;;::.
��` -:-�i- - _ - ��::1�
situ soil and the select backfill material.Geotextile helps pre- = _--�Il..:- =11 -I_= _ _—_-11�1-11�����
servethe integrity of the select backfill envelope that sur-
roun tls and supports the tank. �
�.�
9.1.2.The tank owner or the owner's technical representative
is responsible for determining whether a geotextife or an alter-
nate filtering technique is appropriate for a specific installation. FIGURE 10-1
9.1.3.Using geotextile fabric is considered good installation 10.1.4.The required 12 inches of backfill bedding on the bottom
practice and Xences recommends using it in any installation,but of the excavation must also be present in the excavation hole in
especialiy when the tank is installed in the following conditions: which the sump or fitting will be placed.See FIGURE 10-2.
9.1.3.1. areas with frequently changing groundwater condi-
tions or areas subject to tidal fluctuations
�
9.1.3.2. unstable soils, such as those cited in SECTION 7.5.3. i
9.1.3.3. wa#er conditions with silty in situ soil. � i � �
� ��
9.1.4.For further information concerning geotextile specifica- �� � �
� li
tions and installation procedures, consult the geotextile sup- � I i�
plier's installation guidelines or instructions. i � i I
9.1.5. Polyethylene film is not considered an effective geotex- � � �
tile material because it may tear or degrade while in service. ' � � �
� I � �
9.1.6. If eotPxtile is used,the be ' ' ' ; ���� ' '
g dding material is to be � �� � � �
. R. ....,.� �.�.1; �� _ _ .'� �
placed on top of geotextile. ;d°�,�°�:�;�:.: :�� � :���_ ___ _ '°" ='�°�°`."�
.
.....�. � :;.•�°;o
. o, :�s,r:;�': �,
<-��.�:�.�:..,....._�..,�.�. .
�e v.;,;�K�.�:,e:o o�nSe�:eb. ��io✓:�b�;.b. ������y'
_ °!H��n° I � •i°6°eo •'I��qiii..oi��;��
I' - :i:_iIW�
10. BOTTOM SUMPS AND FITfINGS - - - �"� ' -���6 '°''�'-'-
e,�:R.,� .o :I'�I
. I _ .:de'_.f"..o'�.�� �i�,� 'II�
10.1. GENERAL _ - ��� _ ;"',���' ','
_ - '�,,, ,�,;�;
10.1.1,When handling a tank with a bottom sump or fitting,al- - ��� !� �-"���'"
ways take extra care so that the bottom sump or fitting is not
damaged by contact with any other object,such as the truck FIGURE 10-2
bed or the ground. 10.1.5.After setting the tank,fill and tamp the space around
the sump or fitting by using hand tools before continuing the
10.1.2.When installing a large bottom sump in a water or backfilling.
wastewater tank,see the Xerxes supplement, Large Bottom
Sump Installation lnstructions. See SECTION 20 for details on 11. TAKING DIAMETER MEASUREMENTS
where to obtain this supplement. � �.1. GENERAL
NOTICE 11.1.1. Diameter measurements must be taken at various
Alf connections to the tank must be flexible. Provisions must stages of the installation process to verify that the process is
be made to accommodate movement and misalignment be- Proceeding correctly.
tween the piping and the tank. Failure to do this may result y 7,1.1.1. It is important that these measurements are taken
in damage to the tank and/or surrounding property. and, if needed, appropriate action is taken so that tank deflec-
70.1.3. While preparing the backfill bedding, dig a hole in the tion is within allowable limits.
bottom of the excavation that is large enough to accommo-
date the sum�or fitting.See FlGURE 10-1.
18
�1.1.2.Diameter measurements of the tank must be taken at 11.3.6. Record the measurement at the apprapriate place(as
one or rnore locations on each tank or tank compartment. It is Measurement#1,#2,#3 or#4)on the Tank Insrallation Checklist.
preferable to take the deflection measurement near the center � 1.4. CALCULATION AND COMPARISON
of a tankor compartment if possible.
11.4.1.To get the deflection measurement at any time during
11.1.3.An initial measurement must be taken before installa- installation,take a diameter measurement and subtract it from
tion of tf-ie tank begins.This first measurement is used as a Measurement#1.
comparison reference for subsequent measurements in order
to check proper backfill placement. 11.4.2. Compare this measurement to the applicable allowable
deflection shown in TABLE 11-i.
11.1.4.P.dditional measurements must be taken:a)after apply-
� ing anchvr straps(if used),b)after backfiiling is brought to the
top of thetank, c)after backfilling is brought to subgrade and Tank Diameter Allowable Deflection
� before placement of reinforced concrete or asphalt(if used). 4� y�2��
i 11.1.5. Measure the distance from the bottom edge of a tank 6' a�a��
! fitting to the bottom of the tank immediately below that fitting. $, 1 1�8„
i
' 11.1.6. Described here are two methods using a dipstick to 10' 1 ii2°
, measure the internal diameter of the tank—one not using a �2� 1 3/4°
standpipeand one using a standpipe.
11.1.6.1. Similar methods can be used, such as using a tape TABLE 11-1
measure, for example. 11.4.3.Vertical deflection in excess of this measurement indi-
cates improper installation.
11.1.7.The deflection measurement can be obtained by using
the same method twice or by using each method once. �2. BALLASTING TANKS (ADDING LIQUID)
11.1.8. For both methods, drive a smali-headed, nonsparking � {�/AR1111NG
nail(for example, brass)halfway into a wooden dipstick 1 inch
above its base. Inert the tank and use inert gases(not air)to pressure test
a tank that contains or has contained flammable or com-
11.2. DIAMETER MEASUREMENT WITHOUT bustible liquids or vapors. Failure to follow this warning
A STAN DPIPE could result in an explosion, and could result in death or
11.2.1. Place the dipstick into a service fitting.
serious injury.
11.2.2. Measure the distance from the tank bottom to the top � WARNING
of the fitting and record this measurement. If flammable or combustible product is used as ballast, exer-
11.2.3. Pull the dipstick up until the exposed nail catches on cise special care in handling.Safeguard against sparks,fire
the inside top of the tank. or product spills. Failure to follow this warning could result
in a fire or an explosion,and could result in death or serious
11.2.4. Measure the distance from the tank top(inside)to the injury.
top of the fitting. Subtract the distance from the nail to the
base of the dipstick{1 inch)and record this measurement. � WARNING
11.2.5.Subtract the second measurement(inside tank top to top The tank must be adequately vented to prevent the develop-
of fitting)from the first measurement(tank bottom to top of fitting). ment of vacuum or pressure when filling or emptying the
tank. Failure to properly vent the tank could cause tank fail-
11.2.6.Record the measurement at the appropriate place(as ure, and could result in death or serious injury.
Measurement#1,#2,#3 or#4)on the Tank/nstallatron Checklrst. �2.1. GENERAL
11.3. DIAMETER MEASUREMENT WITH 12.1.1. In most anchoring systems,a tank is not adequately
A STANDPIPE protected against flotation until the tank is fully backfilled and
11.3.1. Place the dipstick into a service fitting with a standpipe. the top slab is in place.Therefore, during the installation
11.3.2.Measure the distance from the tank bottom to the top Process,the tank should be ballasted completely after the
backfill is at least 75 percent of the way up the tank and after
of the standpipe and record this measurement. postinstallation testing has been successfully completed.
11.3.3. Pull the dipstick up until the nail catches on the inside
12.1.2. Only under wet-hole conditions should ballast be
top of the tank, added before the backfill is 75 percent of the way up the tank.
11.3.4. Measure the distance from the tank top(inside)to the See SECTIf�N 5.3.
top of the standpipe. Subtract the distance from the nail to the
base of the dipstick(1 inch)and record this measurement. 12.1.3.Care must be taken so that the use of ballast does not
contaminate the product being stored.This is especially im-
11.3.5. Subtract the second measurement(inside tank top to portant for potable water, chemical and diesel exhaust fluid
top of standpipe}from the first measurement(tank bottam to (DEF�tanks.
top of standpipe).
19
' ' 12.1.3.1. Contamination can be avoided by doing one of the 13.2.6. If the tank is a dry-monitor, double-wall tank with the
foilowing: interstice not under vacuum,bleed pressure from the primary
12.1.3.1.1. ballast the tank with a liquid compatible with the tank to the interstice.
product being stored, or 13.2.7.Hold and monitor the pressure in the interstitial space for
12.1.3.1.2. clean the tank after ballasting to eliminate any con- a minimum of 1 hour.If pressure drops in the interstice more
taminating product. than 1 psig,contact the plant from which the tank was shipped.
13.2.8.Carefully release the air pressure from the tank.
13. POSTINSTALLATION TESTING 13.2.9. Remove the test manifold and replace the protective
� WARNING covers in the service fittings.
� Inert the tank and use inert gases(not air)to pressure test a 13.2.10. If the air test was not successful,contact the plant
� tank that contains or has contained flammable or combustible from which the tank was shipped.
j liquids or vapors.Failure to follow this warning could result in 13.3. OPTIONAL HYDROSTATIC TESTING
an explosion,and could result in death or serious injury.
13.3.1.This optional test is typically used for water or wastewater
� WARNING tanks that are not air-testable due to the accessories on the tank.
If flammable or combustible product is used as ballast,exer- 13.3.2.These instructions are for an optional hydrostatic test
cise special care in handling.Safeguard against sparks,fire or after backfilling is completed to the top of the tanks.
product spills.Failure to follow this warning could result in a fire
or an explosion,and could resuR in death or serious injury. NOTICE
13.�. GENERAL If the tank is to be hydrostatically tested, it must be sup-
13.1.1.After backfill is brought close to the top of the tank, ported by backfill on all sides to at least 75 percent of the
take a diameter measurement. way up the tank. Failure to follow this notice may result in
damage to the tank and/or surrounding property.
13.1.2.Typically,tanks should be air tested before ballasting.
13.3.3. Seal off the influent and effluent piping,and any fittings
13.1.2.1. Do not use atmospheric air when testing air-testable that are below the tank top with watertight caps or plugs.
tanks that have held product. Use nitrogen or other inert gas
when testing these tanks. 13.3.4. Fill the tank with water to a level that is 3 inches into
the access openings after the hole is backfilled at least 75 per-
13.2. AIR TESTING TANKS cent of the way up the tank.
13.2.1. If the tank is a wastewater tank equipped for air test- 13.3.5. Let the water stand in the tank for a minimum of 1 hour
ing, follow the procedures in the Xerxes supplement, Preinsta!- (or longer if required by applicable local codes).
lation Testing Insfructrons for Wafer/Wasfewater Tanks
Factory-Equipped for Pressure Testing. See SECTION 20 for 13.3.6. If the water level drops, check to see that plugs or
information on how to obtain this supplement. caps sealing off the piping are tight.Then add more water to
fill air voids and return the water level back to the standard
13.2.2.All UL-labeled tanks, chemical tanks and potable water testing level.See Point 73.3.3.
tanks must be air tested after backfill is brought close to the
top of the tank. 13.3.7. If the water level does not stabilize,contact the plant
from which the tank was shipped.
13.2.3.To air test a tank,pressurize the primary tank to 5 psig(3 psig
for12-foot-diametertanks)usingatestmanifold(seeFIGURE3-2). �t�,. PIPING AND VENTING
13.2.3.1. Soap all service fittings and manways on the top of 14.1. INTERNAL PIPING
the tank. 14.1.1.All piping must conform to all applicable codes and
NOTE: If the tank is ballasted with water,the tank can be standards.
pressurized for air testing. See POINT 13.2.3.
13.2.4. If the interstitial space of the tank is filled with monitor- NOTICE
ing fluid, check the fluid level and check that there is no moni- A�� internal piping must be at least 4 inches from the tank
toring fluid in the interior of all tank compartments. bottom. Failure to follow this notice may result in damage to
the tank and/or surrounding property.
13.2.4.1. Watch for active air bubbles in the reservoir,which
indicate a problem. NOTICE
13.2.5.If the interstitial space of the tank was shipped under All metal fittings and other metal components must be coated
vacuum and the factory-supplied vacuum has not been re- to protect against corrosion.Failure to do this may result in
leased,check that the vacuum gauge shipped with the tank damage to these parts,the tank and/or surrounding property.
reads 12 inches of inercury or more. 14.1.2. For tanks equipped with manways,refer to FlGURE
13.2.5.1. If the vacuum gauge reads less than 12 inches of 14-7 along with TABLE 74-1 to determine the correct dimen-
mercury, contact the plant from which the tank was shipped. sions for sizing internal piping.
20
, ,
Tanks with Manways DimensionsforFIGURE142
Tank Dia. G H I
Single-wall and Double-wall a� 48° 51 1/4�� 551/4��
C&F 6' 71 3/8" 74 3/4" 78 3/4"
��_�= B&E --_....._..---- -..____-------._..__...-------.._._._.._...-----------------
$' 91 1/4" 94 1/2" 98 1/2"
10' 1191/4" 1221/2" 1261/2"
Single-wall Double-wall
12' 136 5/8" 140" 144"
� TABLE 14-2
a
� A B C p E F 14.2. EXTERNAL PIPING
� � WARNING
�
� The tank must be isolated from all piping when the external
I piping is being pressure tested.The test pressures for exter-
NOTES: nal piping could cause tank failure,and could result in death
1.All fitting dimensions are measured from the top of a or serious injury.
servicefitting to the inside bottom of the tank and include
stri ker-plate clearance. NOTICE
2.Interior diameters do not include striker-plate clearance. When extending monitoring or vapor-recovery piping to the sur-
face,make sure the at-grade fittings are different from any fill
FIGURE 14-1 fittings and will not accept standard fill hoses.Failure to do this
may result in damage to the tank and/or surrounding property.
Dimensions for FIGURE 14-1 NOTICE
Tank A B C D E F All connections to the tank must be flexible. Provisions must
Dia. be made to accommodate movement and misalignment be-
4' as° 49 1/2° 54 1/2° aa^ , as 1i2° 541/2° tween the piping and the tank. Failure to do this may result
-- --- in damage to the tank and/or surrounding property.
---
6' 71 3/8" 73" 78" 70 3/4" 72 1/2" 77 3/4"
s' s7�ia° 93�� 98° so° i 913/4° s�° �4.3. VENTING TANKS
10' 1191/4" 121" 126" 118" 1193/4" 125" � WARNING
12' 1365/8�� 1381/4° 1431/4° --- � --- --- All underground tanks/compartments shall be adequately
TABLE 14-1 vented to prevent the development of vacuum or pressure
when filling or emptying the tank.Failure to properly vent a
14.1.3. For tanks equipped with access openings,refer to FIG- tank or compartment could cause tank failure, and could re-
URE 14-2 along with TABLE 14-2 to determine the correct di- sult in death or serious injury.
mensions for sizing internal piping.
14.3.1.The single-wall tank is designed to operate at atmos-
pheric pressure.
Tanks with Access Openings
14.3.2. In the double-wall and triple-wall tanks,the primary
� �„
tank is designed to operate at atmospheric pressure.
14.3.3.The tank's venting system must be adeq�ately sized to
ensure that atmospheric pressure is maintained at all times, in-
cluding during filling and emptying of tank.
14.3.4.Whenever installing overfill protection, such as an
alarm, an automatic shut-off device{flapper valve)or a vent-
restriction device(ball-float valve},follow the instructions pro-
vided by the manufacturer of the overfill-protection device and
G H � consult the authority having jurisdiction to determine the level
at which the overfill protection should operate.
i 4.3.4.1. Some jurisdictions do not allow ball-float valves.
Consult applicable codes and regulations.
G- internal diameter of the tank
H- distance between the inside bottom of the � WARNING
tank and the internal flange of the access riser
I- distance between the inside bottom of Vent-restriction devices for overfill should not be installed if
the tank and the top of the access opening owner/operator will allow pump-or pressure-filling of tank.
Failure to follow this warning could cause tank failure,and
FIGURE 14-2 could result in death or serious injury.
21
' ` 14 .4, VENTING INTERSTITIAL SPACES 15.3.2.5. For liquid or vapor sensors,the rnonito�•ing access
fitting may be vented to atmosphere(independent from the
NOTICE primary tank)or sealed.
All wet monitoring systems must be vented for proper oper- 15.3.3. DOUBLE-WALL TANK WITH
atio n.Failure to do this may result in damage to the tank
and/orsurrounding property. A WET INTERSTITIAL SPACE
14.4.1.When the tank's interstitial space is filled with a moni- 15.3.3.1.A double-wall tank may be shipped with a factory-
toring fluid,the space must be vented. It is sufficient to drill a �nstalled TRUCHEK�'monitoring system.
1/4-inch-diameter hole in the side or cap of the reservoir 15.3.3.1.1.The TRUCHEK system enables the owner to have
stan dpipe as supplied by the installer. If the groundwater level continuous monitoring or to conduct a tank-tightness test,
� coul d be high enough to enter a drilled vent hole, install a vent TRUCHEK meets the EPA criteria for tank-tightness testing.
� line-from the standpipe to above high-water level. See the Xerxes TRUCHEK brochure for more information.
� 14.4.2.When the interstitia�space is dry, it is not necessary to 15.3.3.1.2. When a double-wall tank is shipped with the
� vent the space to atmosphere. TRUCHEK monitoring system,the interstitial space is typically
� filled with monitoring fluid at the manufacturing facility.
, �5_ MONITORING TANKS 15.3.3.1.3.Some tanks may be shipped with extra monitoring
�5. 1. GENERAL fluid so the monitoring-fluid level can be topped off.
15.1.1.It is the responsibility of the tank owner and/or opera- 15.3.3.2. When the tank is delivered and before it is installed,
tor to determine the appropriate monitoring system and check the monitoring-fluid level and record it on the
method if one is to be used. shipprng/receiving paperwork and Tank Installation Checklist.
15.2. SINGLE-WALL TANK See FIGURE 15-1.
15.2.1.Single-wall tank installations may require release de-
tection monitoring,which can include inventory control, auto- Reservoir
matic tank gauging,vapor monitoring or groundwater Monitoring fluid
monitoring.
......
15.2.2.Check with federal, state and local officials for require-
ments in your area.
15.3. DOUBLE-WALL TANK
FIGURE 15-1
15.3.�. GENERAL 15.3.3.3.The required operating level for the monitoring fluid is
15.3.1.1.A double-wall tank has an interstitial space between approximately 1/2 full. If necessary,fill to the 1/2 full level with
the wall of the primary(internal)tank and the wall of the sec- the Xerxes-supplied monitoring fluid shipped with the tank.
ondary(external)tank for the detection and containment of
product from the primary tank. NOTE: Do not add monitoring fluid until after tank burial is
completed and the monitoring system is set up.
15.3.1.2.A double-wall tank, as supplied, will have a minimum
of one monitoring access fitting that provides access into the NOTICE
interstitial space. All wet interstitial spaces must be vented to atmosphere.
15.3.1.3.Liquid and vapor sensors are installed through the Failure to follow this notice may result in damage to the tank
monitoring access fitting. and/or surrounding property. See SECTION 14.4.
15.3.1.3.1.Most sensors can be installed after the tank has 15.3.3.4. If monitoring fluid is not in the reservoir, contact the
been backfilled to grade. However,for ease of instatlation,the Xerxes customer service coordinator.
sensor may be inserted into the monitoring access fitting be- 15.3.3.5.In a tank with the interstice filled with monitoring fluid,
fore installing the monitoring riser pipe to grade. Xences recommends using a nonmetalic standpipe in the reservoir.
15.3.2. DOUBLE-WALL TANK WITH NOTICE
A DRY INTERSTITIAL SPACE
Monitoring fluid should not be present in the standpipe ex-
15.3.2.1.A safe e�ectronic or mechanical monitoring system cept during a TRUCHEK test.Monitoring fluid in the stand-
should be used to detect product and incoming water. pipe may create excessive pressure on the interstitial space
15.3.2.2. The monitoring system should detect product and and may result in damage to the tank. See the Xerxes
TRUCHEK brochure for more inforrnation.
water at the bottom of the tank.
15.3.3.6.The monitoring-fluid level may fluctuate during ship-
15.3.2,3. If ordered as an accessory, use the factory-installed ping and installation.
drawstring to facilitate positioning of the monitoring sensor at
or near the bottom of the tank. 15.3.3.7.If a tank is sloped,the reservoir should be at the high end.
15.3.2.4. If a double-wall tank is s�oped,the monitor should be 15.3.3.8. During the installation process,the monitoring-fluid
at the low end. level in the reservoir will rise naturally under various conditions:
22
' 1$.3.3.�.1, preinstallation air test 15.3.4.4.After determining the starting point,adjust the moni-
15.3.3.8.2. rise in groundwater level toring fluid based on the product level.
15.3.3.8.3,backfill compaction 15.3.4.4.1. If the tank is between 1/4 and 1/2 full of product,
the proper operating level for the monitoring fluid is at the
15.3.3.8.4,ballasting, starting point.
15.3.3.9,Check and record the monitoring-fluid leve)during 15.3.4.4.2, If the tank is between empty and 1/4 full,the
the installation process.See the Tank lnsfallafion Checklist. proper operating levei for the monitoring fluid is about 1 to 7-
15.3.4. SETrING THE LEVEL OF THE 1/2 inches below the starting point.
� MONITORING FLUID 15.3.4.4.3. If the tank is between 1/2 full and full,the proper
15.3.4.1. After backfilling and top-slab placement is com- operating level for the monitoring fluid is about 1 to 1-1/2
jpleted,c heck the level of the monitoring fluid in the reservoir inches above the starting point.
and set the monitoring fluid to the proper level. 15.3.4.5.Add or remove monitoring fluid to reach the proper
!; NOTE:Failure to set the monitoring-fluid level properly may operating level for the monitoring fluid.
lead to false alarms. 15.3.4.6. If a TRUCHEK test is required after installation,follow
15.3.4,2. Once the tank is installed,the level of the monitoring the procedures in the Xerxes TRUCHEK brochure.
fluid may fluctuate due to such things as: 15.3.4.6.1.After this test, reset the monitoring-fluid level to a
15.3.4.2.'I.product level position based on the product level.
15.3.4.2.2.groundwaterfluctuation � (�. INSTALLING CONTAINMENT SUMPS
15.3.4.2.3.tank filling and emptying 16.�. GENERAL
15.3.4.2.4.product-temperature variation. 16.1.1.Xerxes containment sumps come in a variety of mod-
15.3.4.3. To establish the proper operating level far monitoring els and sizes, including single-wall and double-wall models,
fluid, decide what type of monitoring probe will be used in and round and flat-sided models.
order to determine the initial starting point for the level in the 16.1.1.1. Instructions for the different models are found in
reservoir. Xerxes' suppfemental materials.See SECTION 20 for informa-
15.3.4.3.1.The typical probe has two sensors(a high-fluid tion on where to obtain supplemental instructions.
level and a low-fluid level).When using a two-sensor probe, 16.1.2.The containment sump provides an enclosure for a
the starting point(the proper level for the monitoring fluid) is submersible pump and a termination point for secondary pip-
midway between the two sensors. ing systems.
15.3.4.3.2.If using something other than a two-sensor probe, 16.1.2.1. It provides containment of product from the pump
use 7 inches from the top of the tank as the starting point for and/or piping connections.
the monitoring-fluid level.
16.1.2.2. It is designed to be monitored continuously using
NOTE:When using a probe,do not raise it off the tank to electronic sensors.
meet the monitoring-fluid level.The probe must remain up-
right and in contact with the top of the tank at all times. See 16.1.3. Consult federal, state and local codes and regulations
FIGURE i5-2. to ensure proper monitoring compliance.
16.1.4.All Xerxes containment sumps must be isolated from
traffic loads.
Top slab(by others)
16.1.5. Before installing the containment sump, perform a vi-
� sual inspection of the sump for potential shipping damage.
–''-- Street box and electrical 16.1.6. If damage is detected, contact the plant from which
Vent reservoir/standpipe � hookup(by others)
(by others) the tank was shipped.
Standpipe(by others) � CAUTION
Probe cable(by others) Always wear eye pratection and gloves when handling,
Reservoir grinding, cutting and attaching the containment sump unit.
� Probe(by others) Failure to do so may result in minor or moderate injury.
_� Monitoring-fluid level
—Tank rib(cut away for NOTICE
(1�T1 sensor placement) Do not drop the containment sump assembly components
I��I or allow the sump body to roll.Since high winds could dam-
age the sump components,protect and secure all pieces if
windy conditions arise. Failure to follow this notice may re-
FIGURE 15-2 sult in damage to surrounding property.
23
' ' 16.'1.7. Measure the sump to ensure it is the correct length for 17. ADDING TANKS AT EXISTING LOCATIONS
intended burial depth. For further instructions,see the Xen�es �].1. GENERAL
sup,nlement applicable for fhe specific containment sump
being insta!led. See SECTION 20 for list of supplements. 17.1.1.Additional Xerxes tanks may be instalied at existing lo-
16_2 FINAL CONTAINMENT $UMP INSTALLATION cations if proper foundation support exists.
17.1.2. Backfill support around the existing tanks must not be
NOTICE disturbed.
Make sure that no heavy objects are allowed to distort the 17.1.3. It is the responsibility of the tank owner to choose the
con-tainment sump top after finai assembly.This includes the method of installation.
street box and concrete pad. No weight should be trans-
ferretl ta the tank. Failure to follow this notice may result in 17.1.4.Xerxes requires that one of the following methods be used.
property damage.
17.2. PREFERRED METHOD
�9 16.2.1. Backfill to the top of the containment sump system. 17.2.1.The preferred method is to install new tank(s) in a sep-
? 16.2.2. Backtill around the outside edge of the containment arate hole if space allows and/or if existing tank(s)must re-
� sum p,making sure that no backfill is on top of the contain- main in service during installation of the new tank(s).The
j ment sump.See FIGURE 16-7, Area A. preferred method is described here.See FIGURE 17-7.
' 16.2_3. Isolate the containment sump from all traffic loads.
16.2_3,1.The contractor must install a concrete form/barrier to . , ., . .:._.,�__:_ `�- 36"
u �i =� ii=° �t�r=_r
allowa minimum 3-inch clearance between any load-bearing uali q �
i;i!=
item (for example,the concrete pad/street-box frame)and the >.-i i �-`� o �uii %"'�' ii -li'
i�-, �:�i / _< i:::-�
containment sump top. iif r�- o � i
u'i�i._�- ��_--�' �
-Ifl-- .i II = .
— �. � � ��� /
�IR='ri=
No backfill on top of containment sump ,.r�,�,�_,. `�-�_- ' ,._;;n
!`'i_!I h_ —. — - , - _.;.__..p _ y� - _ ,
Surface Pad Street Box Barrier �-9 -� ���� -� ' �� ��
r
� � ❑ BacAll
B �
i i FIGURE 17-1
17.2.1.1. Install a new tank in a separate hole at least 3 feet
from the original hole.
17.2.1.2. Follow procedures outlined in this Installation Manual.
17.2.1.3. Keep heavy and/or unusual surface loads off existing
Typical Installation tanks when excavation hole is open.
(watertight cover shown)
17.2.1.4. Maintain the natural barrier of undisturbed soil be-
tween tanks.
17.2.1.5.See SECTI�N 7.5. for minimum spacing require-
ments between tanks.
NOTE:Sufficient soil must remain between the excavations
so that the backfill in the original excavation does not shift.
FIGURE 16-1
16.2.3.2.Typically, a sheet of plywood (or other material)is 17.3. ALTERNATE METHOD
used as a barrier and is set on the backfill to ensure that there 17.3.1. If the preferred method outlined above is not possible
is at least a 3-inch clearance above the containment sump or practical, an alternate method is described here.See F1G-
top.See FIGURE 16-1,Area B. URE 17-2.
16.2.4. Choose a street-box size that a�lows enough clearance
around the containment sump top opening for proper opera-
tion of the cover. a _
16.2.5. Set the street box, and check for clearance to allow ��\ /'=�_'�� /`'�
access and space to remove the watertight cover.See FIG- ����ipi} 1 i � / �
URE 16-1, Area G � � i�_ � �� f� -
�u._ � `—�� ���1 \ �/ �ii
16.2.6. Continue with backfill, as required,to subgrade.See I k�. , -�' -- __
.,:�.:_
FIGURE 16-1,Area A. " ` =�- �
.. � , � -
� ,�� <=� =� ` _
° - . -
_ _ �, -
16.2.7. Maintain good drainage of water away from the access
opening of the containment sump top when installing the sur- FIGURE 17-2
face pad.See FlGURE 76-1, Area D. 17.3.1.1. Bury additianal tanks in the same installation hole.
24
' i�7.3.1.2_Empty existing tanks to less than one-quarter(1/4)of NOTICE
capacity.
Storing products and materials other than those identified in
17.3.1.3_ Remove the surface slab. the manufacturer's applicable limited warranty will void
Xerxes'obligations under the limited warranty and may re-
17.3.1.4. Enlarge the excavation for the new tanks, but leave sult in tank failure andlor damage to surrounding property.
as much backfill as possible around the existing tanks.
18.2.2.The temperature of stored products and materials
17.3.1.5. Install shoring, if necessary,to make sure that exist- must not exceed the temperature specified in the manufac-
ing tanks tlo not move and that sufficient backfill remains turer's applicable limited warranty.
around them.
� WARNING NOTICE
Introducing or storing a product or material into a tank in
Failure to shore tanks if necessary to keep the existing excess of the allowable temperature may damage the tank.
tank(s)from moving could result in death or serious injury. Failure to follow this notice may result in damage to the
17.3.1.6. Follow the procedures and requirements for installing tank and/or surrounding property.
the tanks as outlrned in thrs Installation Manual. 'I H.3. ENTERING TANKS
j
17.3.1.7. See SECTION 6 for backfill requirements,and 18.3.1.Do not allow anyone to enter the tank unless it has been
' SECTION 7 for excavation and spacing requirements. properly emptied and vented,and unless the person entering
the tank has been trained in confined-space entry procedures
� CAUTION and applicable OSHA regulations.
If any existing tank(s)should move during the installation of � WARNING
new tanks,they must be removed and reinstalled according
to tank manufacturer's instructions. Failure to follow this Improper tank entry could cause fire,explosion or asphyxiation,
caution may result in minor or moderate injury. and could result in death or serious injury.
18. OPERATING GUIDELINES 18.4. FILLING TANKS (IN GENERAL)
18.1. GENERAL 18.4.1. Never overfill the tank.
18.1.1.Owner must retain the Installation Manual and Operat- 18•4.2. If pump-or pressure-filling a tank, owner/operator
ing Guidelines for future reference to operating guidelines. must take precautions to prevent overpressurization.
18.1.2. In addition to these installation instructions and operat- � WARNING
ing guidelines, follow all federal, state and local laws, regula- Overpressurizing the tank could result in tank failure, and
tions, codes and safety precautions that pertain to could result in death or serious injury.
underground storage tanks and/or their associated systems.
18.1.3.Consult supplemental materials(see SE'CT10N 20), � �NARNING
tank brochures, separate product instructions(such as If a tank does not have overfill protection,the vent must be
oil/water separators)and separate accessory instructions, unrestricted and the vent size must be equal to or greater
than the fill.Failure to follow this warning could result in
which are available upon request from the Xerxes customer death or serious injury.
service coordinator. Most of these documents are also avail-
ab�e at www.xerxes.com. 18.5 FILLING UL-LABELED TANK$
18.1.4.Consult the applicable limited warranty for further op- � WARNING
erating guidelines and limitations.A copy of the applicable Xerxes does not recommend pump-or pressure-filling of the
Xerxes limited warranty is found in the printed material that tank because an overfill or overpressurization could occur. .
accompanies each tank, in each applicable product brochure Overfilling the tank while under pressure could cause tank
and at www.xerxes.com. It is also available upon request from failure even if the tank is vented properly, Failure to follow
the Xerxes customer service coordinator. this warning could result in tank failure, and could result in
death or serious injury.
18.2. TEMPERATURE LIMITS FOR STORED 1 g,5,1. Each time the tank is tilled,the owner/operator must
PRODUCTS AND MATERIALS make sure the tank is properly vented. See SECTlON 14.
18.2.1. Each Xerxes tank is designed to store products and
materials identified in the manufacturer's applicable limited 18•5.2. Owner/operator must determine whether the tank has
overfill protection, such as an automatic shut-off device(flap-
warranty. per valve)or vent-restriction device(ball-float valve), which will
NOTICE close off the internal piping and reduce the tank's capacity.
Products and materials must be stored in the tank appropri- 7 8�5.3. If a tank has a vent-restriction device(ball-float valve),
ate for the specific product or material. Failure to follow this Xerxes recommends that the tank be gravity-filled only.
no�tice may result in damage to the tank and/or surrounding 1 g 5.4. Owner/operator must notify whoever fills the tank if the
P p �Y•
tank has overfill protection,which reduces the tank's capacity.
25
� � 18.5.5. Before each tank filling,owner/operator or the delivery • Two-Part Sealant Mixing/Handling Instructions
service must determine the tank's reduced capacity due to the . Watertight Cover Gasket Replacement Instructions
overfill protection,then consult the instructions or guidelines
provided by the installer and manufacturer of the overFill-pro- • Wet Well Installation Instructions and Operating Guidelines.
tecti on device to determine how much additional product the 20.1.1.2.Among those materials available from technical sup-
tank can hold, port at Xerxes Minneapolis, MN,are the following:
18.5.6. Owner/operator must ensure that the fill line and drop . Alternate Backfill(Sand}Installation Instructions
tube are adequately grounded to prevent static discharge dur-
� ing filling. • Cast-in-Place Deadmen Installation
�
� 18.5_7. Initial fill rate should be controlled to limit the possibil- • Deep Burial Installation Guidelines.
� ity of product sloshing.
; 21. RETENTION OF INSTALLATION MANUAL
' 19. LIMITED WARRANTIES 21.1. GENERAL
19. �. GENERAL 21.1.1.After installation,tank installer must give the Installa-
19.1.1,Each product is covered by a product-specific limited tion Manual and the completed Tank Installation Checklist to
warranty,which contains operating guidelines and parameters the tank owner.
that should be reviewed as applicable.A copy of the applica- 21.1.2.After installation,tank owner must retain the Instaliation
ble Xerxes limited warranty is found in the printed material that Manual for future reference to operating guidelines.Tank owner
accornpanies each tank, in applicable product brochures and must also retain a copy of the Tank Installation Checklist.
at www.xerxes.com. It is aiso available upon request from the
Xerxes customer service coordinator.
20. SUPPLEMENTAL MATERIALS
20.1. GENERAL
20.1.�.Supplemental materials, which may apply to specific
installations and/or conditions,are available upon request
from the Xerxes customer service coordinator or from techni-
cal support at Xerxes Minneapolis, MN. Most supplemental
materials are also available at www.xerxes.com.
20.1.1.1.Among those materials available from the Xerxes
custorner service coordinator and at www.xences.com are the
following:
• Diesel Exhaust Fluid(DEF)Tank Installation Instructions
• Double-Wall Containment Sump Installation Instructions
• Field Fiberglass Lay-Up Instructions for Containment Sumps
• Flexible Dipstick Monitoring Instructions
• Large Bottom Sump Installation instructions
• Man-Out-of-Hole(MOH)Strap Instructions
• New York City Double-Wall Tank installation/Testing Supplement
• Prefabricated Deadmen Installation Instructions
• Preinstallation Testing Instructions for Water/Wastewater
Tanks Factory-Equipped for Pressure Testing
• Primary Backfill Requirements
• TRUCHEK�Brochure
• Single-Wall Containment Sump Installation Instructions
for Flat-Sided Containment Sumps
• Single-Wall Containment Sump Installation Instructions
for Round-Sided Containment Sumps
• Split Backfill Instructions
• Triple-Wall Tank Preinstallation Testing instructions
26
' ' APPENDIX A: XERXES TANK DATA CHART*
Nominal Tank Nominal Tank Actual Tank Actual Tank Actual Tank Nominal Tank Number of
Diame�er Gapacity Gapacity"` Diameter(B)"` Length(A) Weight*"* Anchor Straps
(feet) (gallons) (gallons) (fee�nches) (fee�nches) (pounds) Required
SW&DW SW&DW SW DW SW&DW SW&DW* SW DW Dry DW Wet SW&DW
600 602 602 4'-1/2"SW 6'-117/8"SW 500 800 1,000 2
� 4 4'-1"DW 7'�1/2"DW
� 1,000 1,009 1,009 4'-31/2"SW 11'-37/8"SW 700 1,100 1,400 2
� 4'-4"DW 11'-712"DW
� ----_---------........._..--------......._._.._...._......_-------____.............._..._..--------------.._._...-----___----- ----------- ----------- ---------_..__._.._- -----------
I 2,000 2,376 --- 6'-312" SW 13'-53i4"SW 1,000 --- --- 2
2,500 --- 2,324 6'-31/2"DW 13'-5a�a"DW --- 1,700 2,300 2
3,000 2,973 2,910 6'-3 ii2" 16'-4 yia" 1,200 2,000 2,700 2
6 4,000 4,131 3,789 6'-3 1/2" 21'-ii ii8"SW 1,600 2,500 3,200 2
20'-$"DW
5,000 5,064 4,961 6'-31/2" 26'-5" 1,900 3,000 3,900 4
6,000 5,960 5,840 6'-3 yi2" 30'-8 3ia" 2,200 3,500 4,400 4
----
2,000 2,189 --- 8'-0"SW 9'-1/2"SW 900 --- --- 2
3,000 3,271 --- 8'-0" SW 12'-3"SW 1,200 --- --- 2
4,000 4,218 4,19d 8'-0" 15'-1/2" 1,400 2,200 3,000 2
5,000 5;165 5,089 8'-0" 17'-81/2" 1,700 2,500 3,400 2
8 6,000 6,084 6,044 8'-0" 20'-61/2" 2,000 2,9Q0 3,800 2
8,000 7,95d 7,899 8'-0" 26'-1/2" 2,500 3,500 4,600 4
10,000 9,816 9,753 8'-0" 31'-61/2" 3,000 4,200 5,400 4
12,000 11,682 11,608 8'-0" 37'-1l2" 3,500 4,900 6,200 4
15,000 14,975 14,881 8'-0" 46'-9" 4,500 6,200 7,800 6
10,000 10,563 10,420 10'-4" 21'-51/4" 3,200 3,800 5,100 4
12,000 12,068 11,904 10'-4" 24'-1/4" 3,600 4,300 5,700 4
15,000 15,248 15,041 10'-4" 29'-5 3/4" 4,500 5,200 6,700 4
20,000 20,055 19,782 10'-4" 37'-83/4" 5,700 6,600 8,300 6
10 25,000 25,783 25,431 10'-4" 47'-63/a" 7,900 8,600 10,700 8
30,000 30,590 30,172 10'-4" 55'-93/4" 9,400 10,100 12,400 10
35,000 35,397 34,912 10'-4" 64'-3/4" 10,500 11,700 14,400 12
40,000 41,004 40,443 10'-4" 73'-81/4" 12,100 13,500 16,400 14
20,000 20,781 --- 11'-11" 29'-4"SW 9,200 --- --- 6
25,000 25,541 --- 11'-11" 35'-7"SW 10,600 --- --- 8
30,00� 31,253 --- 11'-11" 43'-1"SW 12,500 --- --- 10
12 35,000 36,013 --- 11'-71" 49'-4"SW 13,900 --- --- 12
40,000 39,821 --- 11'-11" 54'-4"SW 15,000 --- --- 12
48,000 48,389 --- 11'-11" 65'-7"SW 17,700 --- --- 18
50,000 50,293 --- 11'-11" 68'-1"SW 18,300 --- --- 18
NOTES:
-- ��A�� ---
" This chart is for Xerxes fiberglass single-compartment underground
- _: �� storage tanks. For information on additional tank sizes,go to
/ www.xerxes.com.
/
** If an overFill-protection device is installed in the tank,the actual
B capacity will be reduced.
� / *'* Actual height of the tank may be greater than the actual diameter due to
�� _% fittings and accessories.Load height during shipping may vary due to
tank placement on the shipping trailer.
""Adding accessories to the tank may increase the tank weight.
27
` ' APPENDIX B: XERXES PRIMARY BACKFILL REQUIREMENTS
Bt.GENERAL number 6 of rounded stones,for exampie,20-55 percent of the sam-
B1.1 .The backfill material surrounding an underground storage ple(measured by weight)should pass through a 1/2-inch sieve.And,
tank NS�is a critical part of a proper tank installation.This docu- with aggregate size number 7 of crushed stones,0-15 percent of the
men#gives guidelines for choosing the primary backfill material to sample(measured by weight)should pass through a No.4 sieve.
use v+hen installing Xerxes fiberglass tanks. B2.4.Some material suppliers may produce materials that meet
B1.2_The Xerxes Installation Manual specifies that select rounded Xerxes'requirements but are not identified by a standard coarse
stones or crushed stones are to be used as primary backfiil material, aggregate size number.The supplier should be able to provide a
81.3_Primary backfill materia)is to be clean,free-flowing,and free of specification that identifies the size or gradation of the material.
dirt,sand,large rocks,roots,organic materials,debris,ice and snow. 82.4.1.If the material supplier is unable to supply a gradation re-
� B1.4_No backfill material shall be frozen or contain lumps of port,an independent testing laboratory can perform a sieve analy-
� frozen material at any time during placement. sis on a sample of the material according to the ASTM C 136
testing specifications.The test resuits can then be cornpared
61.5. Another important characteristic of good backfill material is against the size requirements for rounded or crushed stones
; hardness or stability when exposed to water or loads.Most materi- shown in table 87-1.
; als have no problems meeting the hardness requirement. g3.ROUNDED STONES
B1.5.�.Materials like soft limestone,sandstone,sea shelis or shale g3.1.When using select rounded stones,the material is to be a
should not be used as backfill because they break down over time. mix of rounded particles,sizes between 1/8 inch and 3/4 inch.
B2.ACCEPTABLE BACKFILL MATERIALS 83.2.The rounded stones must conform to the specifications of
B2.1.Coarse aggregate is a technical term for the materiai(rounded ASTM C 33,sizes 6,67 or 7.
stonesand crushed stones)that meets Xences'bac�ll size requirements.
B3.3.No more than 5 percent(by weight}of the backfill may pass
82.2. ASTM Internationai and The American Association of State through a#8 sieve.See TABLE 81-1 for additional information
Highway and Transportation Officials(AASHTO)have specifications about specifications.
for standard sizes of coarse aggregate.
NOTE:Generally,rounded stones that meet the gradation re-
B2.3.7ABLE B1-1 gives the standard sizes of coarse aggregate that quirements are larger than allowable crushed stones.
mee#Xerxes'bac�ll material spec'rfications for rounded stones and
crushed stones.It identifies standard sieve sizes used to grade ag- �•CRUSHED STONES
gregate material.For each aggregate size,the amount of material B4.1.When using crushed stones,the material is to be a mix of
finer than each laboratory sieve(square openings)is given as a angular particles,sizes between 1/8 inch and 1/2 inch.
percentage of the total weight of the sample. 84.2.The crushed stones must conform to the specifications of
NOTE:ASTM uses size numbers 6,67,7 and 8 to describe spe- ASTM C 33,sizes 7 or 8.
cific gradation profiles for materials that pass through a series of g4.3.No more than 5 percent(by weight)of the backfill may pass
sieves.Do not confuse these gradation profiles with sieve sizes. through a#8 sieve.See TABLE 81-1 for additional information
B2.3.1.The percentages give an indication of the particle size distribu- about specifications.
tion or gradation within a given aggregate size.With aggregate size
TABLE B1-1 —Percent of Stones Passing Through Sieve by Sieve Size
Rounded Stones Crushed Stones
IASTM C 33 #6 Stone #67 Stone #7 Stone ASTM C 33 #7 Stone #8 Stone
Size# Size#
[ inch l I 100% 700% --- �25 m
$I@V2 25 mm � � --_ _—_
------ ------_.._.. __._...-------- _..--- --- — ---
J�'IZG' 3/4 inch 3/4 inch
[19 mmJ 90-100% 90-100% 100% [y9 mm] 100% ---
-- i --- — — -- -- --- —
712 inch ! 1/2 inch
[12.5 mm] I 20-55% --- 90-100% [12.5 mm] 90-100% 100%
I
3/8 inCh 0-15% 20-55% 40-70% 3/8 inch 40-70% 85-100%
[9.5 mm] [9.5 mm]
No.4 I No.4
.0187 inch 0-5% 0-10% 0-15% .0187 inch 0-15% 10-30%
[4.75 mm] [4.75 mm]
No.8 No.8
.094 inch --- 0-5°/a 0-5% .094 inch 0-5% 0-10%
[2.36 mm] [2.36 mm]
28
' ' APPENDIX C: XERXES SPLIT BACKFILL INSTRUCTIONS
C1.GENERAL C2.5.Secondary backfill must be compacted to achieve a mini-
C1.1.Us e select rounded or crushed stones for primary backfill mum of 85 percent standard proctor density.
material as specified in the Xences Insfallation Manual in effect at C2.5.1.Do not use rammer-type compactors over the top of the
time of installation,and the Xences APPENDIX B(and supplement), tank.
Pnmary Backfill Requirements.
C2.5.2.Some tank owners may require sample testing and written
C2.SPLIT'BACKF�LL INSTALLATION reports to verify the compaction of the backfill.
C2.1.Use the primary backfill material vertically up to at least 75 C2.6.Material must be installed in 12-inch to 24-inch lifts compat-
percent of the tank diameter.See FIGURE C1-7, ible with the compaction equipment used.
C2.2.Fol/ow the instructions in SECTfON 6 of fhe lnstaflation C2.7.In some conditions,frost heave may be encountered when
Manual o n the placement of this backfill material. using secondary backfill.Therefore,consider any problems that
iC2.3. Install a layer of geotextile filter fabric over the entire surface may occur.
� of the prirnary backfill material.See SECTION 9 for more informa- G2.8.Specifications for secondary backfill material and com-
tion about geotextile filter fabric. paction above the filter fabric may be determined by the require-
C2.3.1.Atl joints in the filter fabric should be overiapped a mini- ments of the piping, surface slab or roadway.
mum of 12 inches. C2.9.Refer to applicable codes or standards for base course and
C2.3.2.Geotextile fabric must overlap onto the tank and excava- sub-base course material and compaction requirements.
tion surface a minimum of 12 inches. C2.10.The following are examples of acceptable secondary back-
C2.3.3.Instailations with unstable soil may require that the fabric fill material:
line the entire excavation.See SECTlON 9 for specific information C2.70.1.clean native backfill
about using geotextile filter fabric in unstable-soil conditions.
C2.10.2.coarse sand or gravel
C2.4.Clean native backfill may be used as secondary backfill ma- C2.11.One hundred percent(100%)of all backfill material must
terial abovethe ge�textile fabric to subgrade.
pass through a 1-inch sieve.
C2.4.1.Secondary backfill material must be clean,free-flowing,
and free of large rocks,roots,organic materials,debris, ice and
snow. Backfill material shall not be frozen or contain lumps of
frozen material at any time during installation.
FIGURE C1-1 —Split Backfill Installation
r�----
— Grade or subgrade
Secondary backfill _ ---- — — -�---_
material � � �- ����
(I�� � . :..: I�I� 1
Filter fabric with a �� -- ---- ' ����
J
minimum of 12" overlaps ���Ifll� �� j ���IEI�'
I
IIII � � 1Nt-- - -
IIII � ����� � �� = 111� �'
Iill � ;�_ ' IIII a
IIII �, �� I - III� 75% of tank diameter
IIII = ` '���� "� �-111I "
Primary backfill �_� �� ;�,�II1 = �I� � �
material llll - (���y �';�- ���; _ °
. � = 12 bedding
IIII- 1111 - 11(I - 1111 -1111 - 1111 - 111(_- 111 �
29
' ' XERXES TANK INSTALLATION CHECKLIST
Th etank owner should retain a copy of the completed Tank Installation Checklist in order to facilitate any warranty claim.Unless other
information is requested,initial each step to verify that the item has been performed or installed per Installation Manual specifications
and instructions.
A1 .GENERAL INFORMATION
Da'ie of Installation
Address of Instailation
Tank Owner Name Telephone Emaii
Address
Coe'�tractor Name Telephone Email
� Address
i A2. TANK INFORMATfON
I� Tank Number Tank#1 Tank#2 Tank#3 Tank#4
UL�(from tank label)
Nominal Tank Diameter(in feet)&
Capacity(in gallons)
Tank Type(SW,DW,MC,OWS,
Other,and Wet or Dry)
A3. PREINSTALLATION (See SECTlONS 2 and 3 for instructions and specifications.)
Visual Inspection(no damage)
Tanks shipped under vacuum
(SECTION 4.3.requirements met)
Tanks with monitoring fluid
(record fluid level in reservoir and check
for absence of fluid in or on tank)
Tank passed pressure/soap test'rf req'd
A4.DIAMETER MEASUREMENTS(See SECTJQN 11 for instructions and requirements.Mark location of ineasurements on site sketch.)
Measurement#1 (before installation)
Measurement#2(straps installed)
Measur�,merrt#3(backfiiled to top of tank)
Measurernerrt#4(backfilled to subgrade)
Deflection measurement(#1—#4)
M�surerne�rt meets req'ts of TABLE 11-1
A5.INSTALIATION(See SECTlONS 5,6, 7,8,9, 12 and 14 for instructions and specifications.)
Primary backfill material
Secondary backfiil material(if used)
Traffic�oads(indicate yes or no)
Excavation(size and condition)
Hole condition(indicate dry or wet)
Backfili bedding
Tank spacing(between tanks and
from excavation walis}
Anchoring(indicate system used:
none,deadmen or anchor slab)
Anchoring(if used)
30
' � XERXES TANK INSTALLATION CHECKLIST continued
� Tank N umber Tank#1 Tank#2 Tank#3 Tank#4
A5.INSTALLATION continued(See SECTIONS 5,6, 7,8,9, >2 and 14 for instructions and specifications.)
� Anchor straps(if used)
� Geotextife(if used)
� Backfill placement&compaction
� Ballastin g(if wet hole)
�
i Fittings 8 other metal components
(coated for corrosion protection)
Depth of backfill over tank(specify)
Level of backfill after final inspection
Type and thickness of surface pad
Piping connections per requirements
A6.POSTINSTALLATION(See SECTIONS 13, 15 and 16 for instructions and specifications.}
Postinstallation tests for air-testable tanks
Optional hydrostatic test
Monitoring-fluid tanks(set fluid level
when backf�ling&top slab are complete,
and record Ievel in r�.,ervoir here)
Monitoring-fluid tanks
(verify there is no fluid inside tank)
ContainmeM sump
(water test successfu�
A7.SITE SKETCH(indicate specifics of tank instailation.) A8.ADD�TIONAL NOTES
, i (including variations and/or deviations from
i --fi -- ----- ------ !---- -....— _- _......_ ..._._._ __ instructions,with written authorizations attached)
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i
A9.VERIFYING SIGNATURES
CONTRACTOR Name Date
I verify that this information is a true record
of the installation of the tanks listed here.
Signature ____ _______
TANK OWNER/REPRESENTATIVE Name Date
I verify that this information is a true record
of the installation of the tanks listed here,and
that 1 have received a copy of the Installation Signature
Manual and this Tank Installation Checklist. ------ --
�
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Edmonton,AB: 800.661.8265 Anaheim, CA: 714.630.0012
Drummondville, �C: 800.661.8265 Hagerstown, MD: 301.223.6933
Seguin, TX: 830.372.0090
Tipton, IA: 563.886.6172
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connPOSiTES iNC. a zcr. company
ZCL Composites Inc. Xerxes Corporation
142Q Parsons Road SW 7901 Xerxes Avenue South
Edmonton, AB, T6X 1 M5 Canada Minneapolis, MN 55431 USA
780-466-6648 952-887-1890
www.zcl.com www.xerxes.com
ZCL�'and Xerxes are registered trademarks of ZCL Composites Inc.
O 2013 ZCL Composites Inc. XIM04/13pp
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a zeL co m pa ny
Tank Anchoring System
An engineered solution
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Xerxes recognizes that the components of a tank anchoring system can be critical to a reliable, long-term tank installation. A large
percentage of today's underground tank installations are anchored, whether site conditions mandate it or not. Use of inferior
components, such as improperly designed or undersized concrete deadmen, can lead to disastrous results. As a solution, we
designed and began supplying each of the components essential to proper tank anchoring, prefabricated deadmen, galvanized
turnbuckles and extruded fiberglass hold-down straps. Providing a safe, dependable anchoring solution is not our only objective.
The Xerxes anchoring package is also designed to provide installers with a quick,easy to install package of components that expedites
the overall installation.The Xerxes tank anchoring system is yet another example of product innovations that Xerxes has been offering
customers for more than three decades.
Consider the following features and ben�fits:
Flexi bie Design—Xerxes prefabricated deadmen were engineered with ease of shipping and instailation in mind.With their
unique and patented design,which incorporates adjustable galvanized steel anchor points, installers can properly align each
anchor point and hold-down strap after the tank and deadmen have been set in place.
An Er�gine2red Produtt—Tank installers and owners can have the confidence that prefabricated deadmen,an often overlooked
yet critical component of an anchored tank installation, have been properly engineered and sized for each tank. Xerxes precast
deadmen are fabricated to meet American Concrete Institute(ACI)design standards,which establishes such things as proper steel
reinforcement, concrete psi specifications and adequate cure time.
Transpartation — An additional feature of Xerxes deadmen is that their geometry and dimension5 allow them, in most
cases, to be placed on the same shipping trailer as the tank. For installer5, this means that the components of the anchoring
system arrive with the tank, avoiding the potential for jobsite delays.
A Carriplete System — Combined, Xerxes supplied fiberglass hold-down straps, galvanized turnbuckles and prefabricated
deadmen provide a complete anchoring package. With each component specifically designed and supplied by Xerxes,
facility owners have fhe added peace-of-mind that in addition to having installed the industries' finest storage tank, they
have also installed a reliable anchoring system.
making a lasting differenceT""
� �
Deadmen for 4'-, 6'- �X' $'-Diameter Tank Installations galvanizedanchorpoint
4,000 psig
concrete #5 rebar
galvanized anchor points � (Qty.4)
(
,4. ; :4." � ". d. ' a
al ignment slot alignment siot '.•0• .' '. •.0. � �
15" . . '. •a� l •�a , . .
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• , :e_ • . � � � .
.o• •o•, , ,n:: ..e. .Q•: ��a.�
�
Deadmen far 10`- and limited 12'- Diameter Tank Installations
galvanized anchor points galvanized anchor point
4,000 psig
concrete � #7 rebar
� . i (Qty z)
alignment slot 13" alignment slot #6 rebar
� � �, o (4ty.2)
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Produtt Specifications
Deadmen for 4'-, 6'- and 8'-Diameter Tanks
Turnbuckles
Non�inal Ic�ngth Nominal width x clepth Approximate vveight(I��s.} 1aw-to-Jaw Style
12' 12" x 12" 1,800
16' 12" x 12" 2,400 6'-Diameter Tanks
18' 12" x 12" 2,700 3/4„ x 9"
(17" closed, expanding to 26")
Deadmen for 10'- and 12'-Diameter Tanks
8'-Diameter Tanks
Norr�ina! len�th Nominal vvid�h x depth Appraximateweigh�(Ibs.j 3/4" x 1Z"
14' 18" x 8 3l4" 1,900 (20" closed, expanding to 32")
18' 18" X 8 3/4" 2,400 10'- and 12'-Diamete��Tanks
22' 18" X 8 3/4" 3,000 3/4" x 18"
30' 18" x 8 3/4" 5,000 (26" dosed, expanding to 44")
General Notes:
1. Deadmen requirements may vary with tanks 25,000 gallons or larger, and/or based on the number of containment sumps, access
risers and burial depth.
2. Consult the Xerxes Installation Manual and Operating Guidelines or your Xerxes sales representative for more information.
��x�°�� 7901 Xerxes Avenue South, Minneapolis, MN 55431 USA
a zc�. company 952-887-1890 www.xerxes.com making a I�sting difference�'�
OO 2012 Xerxes Corporation xas10/12ih