LITHIUM cleanup levels in Pennsylvania

These are the Pennsylvania Department of Environmental Protection's published values for LITHIUM, from its Statewide Health Standard tables. DEP's page says the tables present the standards published November 20, 2021. Each value is shown as the agency prints it, with the same number written out beside it where that reads differently.

Pennsylvania: Statewide Health Standard Medium-Specific Concentrations

Table 2: Medium-Specific Concentrations (MSCs) for Inorganic Regulated Substances in Groundwater

DEP's file dated November 15, 2023.

Used Aquifers, TDS ≤ 2500

Column	Value	Code
R (ug/L)	69	G
NR (ug/L)	190	G

Used Aquifers, TDS > 2500

Column	Value	Written out	Code
R (ug/L)	6900	6,900	G
NR (ug/L)	19000	19,000	G

Nonuse Aquifers

Column	Value	Written out	Code
R (ug/L)	69000	69,000	G
NR (ug/L)	190000	190,000	G

Footnotes to Table 2, as the agency prints them

All concentrations in ug/L (except asbestos)

M = Maximum Contaminant Level

H = Lifetime Health Advisory Level

SMCL = Secondary Maximum Contaminant Level

G = Ingestion

N = Inhalation

Table 4a: Medium-Specific Concentrations (MSCs) for Inorganic Regulated Substances in Soil: A. Direct Contact Numeric Values

DEP's file dated November 15, 2023.

Residential MSC

Column	Value	Code
0-15 feet (mg/kg)	440	G

Nonresidential MSCs

Column	Value	Written out	Code
Surface Soil, 0-2 feet (mg/kg)	6400	6,400	G
Subsurface Soil, 2-15 feet (mg/kg)	190000	190,000	C

Footnotes to Table 4a, as the agency prints them

All concentrations in mg/kg

G - Ingestion

N - Inhalation

C - Cap

U - UBK Model

S - SEGH Model

Table 4b: Medium-Specific Concentrations (MSCs) for Inorganic Regulated Substances in Soil: B. Soil to Groundwater Numeric Values¹

DEP's file dated November 15, 2023.

Used Aquifers, TDS < = 2500, R

Column	Value	Written out
100 X GW MSC (mg/kg)	6.9
Generic Value (mg/kg)	2100	2,100

Used Aquifers, TDS < = 2500, NR

Column	Value	Written out
100 X GW MSC (mg/kg)	19
Generic Value (mg/kg)	5700	5,700

Used Aquifers, TDS > 2500, R

Column	Value	Written out
100 X GW MSC (mg/kg)	690
Generic Value (mg/kg)	190000	190,000

Used Aquifers, TDS > 2500, NR

Column	Value	Written out
100 X GW MSC (mg/kg)	1900	1,900
Generic Value (mg/kg)	190000	190,000

Nonuse Aquifers, R

Column	Value	Written out
100 X GW MSC (mg/kg)	6900	6,900
Generic Value (mg/kg)	190000	190,000

Nonuse Aquifers, NR

Column	Value	Written out
100 X GW MSC (mg/kg)	19000	19,000
Generic Value (mg/kg)	190000	190,000

Soil Buffer Distance (feet)

Column	Value
Soil Buffer Distance (feet)	10

Footnotes to Table 4b, as the agency prints them

1 For other options see Section 250.308

All concentrations in mg/kg

R - Residential

NR - Non-Residential

NA - Not Applicable

The agency's current table governs. This page is a reference copy and not a cleanup decision. Check the agency's page for a newer table before relying on a value.

Source

• Pennsylvania Department of Environmental Protection, Statewide Health Standard Medium-Specific Concentrations.
• Table 2: DEP's file dated November 15, 2023, read October 5, 2026.
• Table 4a: DEP's file dated November 15, 2023, read October 5, 2026.
• Table 4b: DEP's file dated November 15, 2023, read October 5, 2026.