7.0 Notation
This section contains definitions of all the symbols used in the report, along with their associated units.
a	factor in the LS-factor equation	unitless
aj	coefficent for Blaney-Criddle PET function for the j-th month	mm d-1
A	horizontal cross-sectional area of the contaminant source zone	cm2
Adist	aggregate size distribution	mm
Aloss	average-annual soil loss	t ha-1 yr-1
As	surface area of the external boundary of an ISS waste form	cm2
Asg	total surface area of cracked glass in an ISV waste form	cm2
Asgo	initial total surface area of cracked glass in an ISV waste form	cm2
bj	coefficient for Blaney-Criddle PET function for the j-th month	unitless
cj	correction factor for the Penman method with correction factor for the j-th month	unitless
csky	mean sky cover for a 12-hr period (tenths)	unitless
csky(j)	mean sky cover for the j-th month obtained from the LCD (tenths)	unitless
cvk	von Karman constant	unitless
Cfact	vegetative cover factor	unitless
Coi	concentration of contaminant i in the NAPL phase	g cm-3 or Ci cm -3
Csi	concentration of contaminant i in the sorbed phase	g g-1 or Ci g-1
Cti	overall total concentration of contaminant i in a bulk volume of source zone	g cm-3 or Ci cm-3
Ctio	value of overall total concentration of contaminant i used at the beginning of a time step in the bounding calculation for volatization	g cm-3 or Ci cm-3
Cvi	concentration of contaminant i in the vapor phase	g cm-3 or Ci cm-3
	saturated vapor concentration of contaminant i	g cm-3 or Ci cm-3
Cwi	concentration of contaminant i in the vapor phase	g cm-3 or Ci cm-3
	aqueous solubility if contaminant i	g cm-3 or Ci cm-3
d12rd	12-hr snowmelt from radiation	cm
d24m	daily snowmelt during a rainfall event	cm
d6c	6-hr snowmelt from convection	cm
d6vc	6-hr snowmelt from vapor condensation	cm
dcj	average monthly snowmelt from convection for the j-th month	cm
dfmax	peak flow depth	cm
dp	depth of the pond	cm
dpr	daily precipitation depth	cm
dpraj	precipitation adjusted for snowmelt for the j-th month	cm
dpruj	unadjusted precipitation depth for the j-th month obtained from the LCD	cm
drdj	average monthly snowmelt from radiation for the j-th month	cm
dmj	snowmelt from the rainfall for the j-th month	cm
droj	overland runoff for the j-th month	cm
dsj	total snowmelt for the j-th month	cm
dvcj	average monthly snowmelt from vapor condensation for the j-th month	cm
Dgi	effective diffusion coefficient of contaminant i within an ISS waste form	cm2 yr-1
Dvi	effective vapor diffusion coefficient of contaminant i in soil	cm2 yr-1
	vapor diffusion coefficient of contaminant i in air	cm2 yr-1
ea	actual vapor pressure of the air	mbar
eaj	mean actual vapor pressure of the air for the j-th month	mbar
esj	saturation vapor pressure for the j-th month	mbar
E	volumetric water erosion rate	cm yr-1
Eaj	actual evapotranspiration for the j-th month	cm
Epj	potential evapotranspiration rate for the j-th month	mm d-1
Elim	annual average limited emission rate per unit surface area	g yr-1
Epav	emission rate for traffic on paved roads	g vehicle-1 km-1
Epot	erosion potential	g m-2
Eroad	emission rate from road surfaces	g vehicle-1 km-1
Eunlim	annual average unlimited emission rate per unit surface area	g yr-1
Eunpav	emission rate for traffic on unpaved roads	g vehicle-1 km-1
Eveh	emission rate for suspension due to vehicular travel	g yr-1
Ewind	total emission rate for wind erosion	g yr-1
Ewm	emission rate for wind/mechanical suspension	g yr-1
fcr	fraction of soil surface that is crusted	unitless
fd	frequency of mechanical disturbances	month-1
fhj	factor for the j-th month to correct the wind speed mearsurement to a 2-m measurement height	unitless
fj	coefficient for Blaney-Criddle PET function for the j-th month	mm day-1
fne	nonerodible elements correction factor	unitless
fp	particle size parameter	unitless
fPE	Thornthwaite's Precipitation-Evaporation (PE) Index	unitless
fperm	profile-permeability class factor	unitless
fv	fraction of surface covered with vegetation	unitless
fwj	temperature-related weighting factor for the j-th month	unitless
h	thickness of the contaminant source zone	cm
h0	elevation of LCD station	m
h1	elevation of actual site	m
	average percent relative humidity for the j-th month	unitless
hin	wind speed measurement height above ground	m
	maximum percent relative humidity for the j-th month	unitless
	minimum percent relative for the j-th month	unitless
href	reference height above the soil surface	m
Hi	Henry's Law constant for contaminant i (press./concen. basis)	atm m3 mol-1
i	index on contaminant	unitless
Ij	leachate generation for the j-th month	cm
Imax(j)	maximum amount for moisture available for percolation in the j-th month	cm
Ipot(j)	potential percolation for the j-th month	cm
j	index on month	unitless
k	index on contaminants other than contaminant i	unitless
k1-k4	the four intermediate terms in the Runge-Kutta calculations	---------
kig	gas-phase mass transfer coefficient for contaminant i at a pond surface	cm yr-1
kil	liquid-phase mass transfer coefficient for contaminant i at pond surface	cm yr-1
K1	theoretical constant in equation for snowmelt by vapor condensation	cm s mbar-1 m-1
K2	heat exchange coefficient as a function of elevation	cm s m-1 oC-1
Kdi	linear equilibrium sorption coefficient for contaminant i to a solid sorbent	cm3 g-1
Kfact	soil erodibility factor	t ha-1 yr-1 per unit Rfact
KHi	modified "Henry's Law" constant for contaminant i (concen./ concen. basis) for partitioning between aqueous solution and vapor	unitless
	modified "Henry's Law" constant for contaminant i (concen./ concen. Basis) for partitioning between NAPL and vapor	unitless
Kli	overall mass transfer coefficient from a liquid phase to the atmosphere for contaminant i, expressed in terms of the liquid-phase concentration	cm yr-1
Kowi	octanol-water partition coefficient for contaminant i	unitless
Krd	snowmelt occurring by radiation in a half-day in clear weather	cm
Krdj	average snowmelt occurring by radiation in a half-day in clear weather for the j-th month	cm
	analogue of the modified "Henry's Law" constant for contaminant for partitioning between NAPL and aqueous phases	unitless
Lr	surface roughness length	m
Lroad	distance of travel over contaminant surface	km
Lslope	slope length	cm
Lx	dimension of the contaminated aquifer source zone parallel to flow	cm
Ly	horizontal dimension of the contaminated aquifer source zone perpendicular to flow	cm
Lz	vertical dimension of the contaminated aquifer source zone perpendicular to flow	cm
mLS	exponent in the LS-factor equation	unitless
Mi	total mass or activity of contaminant i in the source zone	g or Ci
Mio	initial total mass or activity of contaminant i in the source zone	g or Ci
Mio'	total mass or activity of contaminant i in the source zone at the time the zone was subjected to ISV remediation	g or Ci
Mio"	total mass or activity of contaminant i in the source zone at the time the zone was subjected to ISS remediation	g or Ci
Mi,p	total mass or activity of the p-th member of the decay/degradation chain that starts with contaminant i	g or Ci
Mmi	molecular weight of contaminant i	g mol-1
Mveh	mean vehicle weight	Mg
n	time step index used in the Runge-Kutta equations	unitless
nc	total number of contaminants in the source zone	unitless
ncn	total number of constituents in the NAPL phase	unitless
ndj	number of days in the j-th month	unitless
np	number of day with at least 0.254 mm (0.01 in) of precipitation per year	unitless
npj	number of precipitation events during the j-th month	unitless
nscs	SCS Curve Number used for runoff calculations	unitless
nv	average number of vehicles traveling over the contaminated surface per day	vehicle d-1
nw	mean number of wheels on a vehicle	unitless
pj	mean daily percentage of total annual daytime hours as a function latitude for the j-th month	unitless
P2,6	2-year recurrence interval, 6-hr duration rainfall depths	cm
Pclay	percent clay	unitless
Pfact	erosion control practice factor	unitless
Pom	percent organic matter	unitless
Psand	percent sand	unitless
Psilt	percent silt plus very fine sand	unitless
qw	Darcy flux density of water flowing through the aquifer or vadose zone	cm yr-1
Qover	total flux of aqueous solution, sediment, and NAPL globules as pond runoff	cm3 yr-1
Qw	volumetric flux of water flowing through the aquifer source zone or vadose zone source zone, or out of the bottom of a pond/surface impoundment source zone	cm3 yr-1
r	index of contaminants other than contaminant i	unitless
rg	mass dissolution rate of glass in an ISV waste form per surface area	g yr-1 cm-2
rsun(j)	ratio of actual to maximum possible sunshine hours for the j-th month	unitless
R	Universal gas constant	atm L mol-1 K-1
Raj	extraterrestrial radiation, in equivalent evaporation for the j-th month	mm d-1
Rfact	rainfall erosivity factor	(100m)(t ha-1) (cm yr-1)
Ri	retardation factor, or phase apportionment factor, for contaminant i	unitless
Rnj	net radiation, in equivalent evaporation, for the j-th month	mm d-1
Rnlj	net longwave radiation, in equivalent evaporation for the j-th month	mm d-1
Rnsj	net shortwave radiation, in equivalent evaporation, for the j-th month	mm d-1
Rsj	solar radiation, in equivalent evaporation, for the j-th month	mm d-1
S	volumetric wind suspension rate	cm yr-1
Sfact	slope length and steepness factor	unitless
Sm(j)	soil moisture storage for the j-th month	cm
Sslope	slope gradient (in percent)	unitless
Sstruc	soil structure index	unitless
t	time since initial condition of the source zone	yr
t1/2i	decay/degradation half life of contaminant i in any phase	yr
tn	value of time equal to nDt	yr
T	absolute temperature	K
T12	average 12-hr temperature	oC
T24	average daily air temperature	oC
T6	average 6-hr temperature	oC
Taj	adjusted average monthly temperature at the actual site for the j-th month	oC
Tuj	unadjusted average monthly temperature at the LCD station for the j-th month	oC
	average wind speed	m s-1
U6,15	average 6-hr wind velocity measured at 15m (50ft) above ground	m s-1
Uc	critical wind speed at the reference height above the soil surface	m s-1
Ud2j	mean monthly daytime wind speed at a 2-m height for the j-th month	m s-1
Uf	threshold friction velocity	m s-1
	average wind speed at a reference height above the soil surface	m s-1
Umax	maximum wind speed at a reference height above the soil surface	m s-1
	mean annual wind speed	m s-1
vveh	mean vehicle speed	km hr-1
V	overall volume of the contaminated source zone	cm3
Vg	volume of cracked glass in an ISV waste form	cm3
Vgo	initial volume of cracked glass in an ISV waste form	cm3
wpj	accumulated potential water loss for the j-th month	cm
WWHC	water-holding capacity of the soil	cm
Xoi	mole fraction of contaminant i in the NAPL phase	unitless
z	distance from the initial position of the soil surface to the top of the source zone at time t	cm
zb	distance from the initial position of the soil surface to the top of the source zone at any time	cm
zt	distance from the initial position of the soil surface to the initial position of the top of the source zone (i.e., initial thickness of clean layer)	cm
a	land surface reflectiveness correction parameter	unitless
ß	bulk density of the solid-sorbent phase	g cm-3
ßs	soil bulk density for an aquifer or vadose zone	g cm-3
ßss	concentration of suspended sediment in the pond water	g cm-3
Dt	time step size in Runge-Kutta calculations	yr
li	first-order decay/degradation coefficient for contaminant i	yr-1
li,k	first-order decay/degradation coefficient for the k-th member of the decay/degradation chain that starts with contaminant i	yr-1
rg	density of glass in an ISV waste form	g cm-3
rli	density of contaminant i in the pure liquid form	g cm-3
s	constant in the estimation equation for Rnlj	unitless
qa	volumetric air content of the soil	unitless (cm3 cm-3)
qw	volumetric water content of the soil	unitless (cm3 cm-3)
qt	total porosity of the soil	unitless (cm3 cm-3)