SRBC Natural Gas Development" on January 29, 2010 at the Science of the Marcellus Shale symposium at...

8/14/2019 SRBC Natural Gas Development" on January 29, 2010 at the Science of the Marcellus Shale symposium at Lycoming College, Williamsport, PA

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Susquehanna River Basin Commission

Federal-interstate compact commission established by

the federal government (USACE) and the states of NewYork, Pennsylvania, and Maryland.

Responsible for managing the basins water resources.

Regulatory authority water withdrawals andconsumptive use

Water quality monitoring and coordination


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Projects requiring review and approval

Water withdrawals 806.4(a)(8) 100,000 gpd/30-day average (3,000,000 gallons)

Any natural gas well development project in the basin targetingthe Marcellus or Utica shale formations, or any other formation

identified in a determination issued by the Executive Directorpursuant to 806.5, for exploration or production of natural gasinvolving a withdrawal, diversion or consumptive use, regardlessof the quantity.

Consumptive water use 806.4(a)(1) 20,000 gpd/30-day average (600,000 gallons)

Approval by Rule 806.22(f)(i)

Commission Regulations


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Water Withdrawal Review Environmental ScreeningClassification

Natural Diversity Inventory

Wetlands

Water Quality

Aquatic Resource Survey

Passby Evaluation

Cumulative Impact Evaluation

Aquatic Invasive Species

Intake Design & Metering Plan

Compliance Activities


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Passby Flow Determination

If Cumulative Water Demand is:

10% Q7-10, Passby Flow Required

Reduce Proposed Withdrawal Rate to


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Determine Chapter 93 Existing/Designated Water Use Apply IFIM Method (SRBC, 1998) for:

Coldwater Streams in Study Area with DA < 100 Square Miles

EV =


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Determine Chapter 93 Existing/Designated Water Use

Apply Tennant Method for:

Streams Not Covered by IFIM Method Criteria

EV, HQ, and Wild Trout = 25% Average Daily Flow (ADF)

Non- EV, HQ, and Wild Trout and Not AMD-Impaired = 20%

ADF

Partially AMD-Impaired with Some Aquatic Life = 15% ADF

Passby Flow Never To Be < Q7-10

Tennant Method vs. IFIM Method, Cont.


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Annual Hydrograph - Larrys Creek

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Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

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Full Range of Flow (P0 - P100) (cfs )

Approved Withdraw al (cfs )

Daily Median Flow (P50) (cf s)

7-Day, 10-Year Low Flow (7Q10) (cfs)

20% of Average Daily Flow (20% ADF) (cfs )


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Full Range of Flow (P0 - P100) (cfs)

Approved Withdrawal (cfs)25% of Average Daily Flow (25% ADF) (cfs)Daily Median Flow (P50) (cfs)7-Day, 10-Year Low Flow (7Q10) (cfs)20% of Average Daily Flow (20% ADF) (cfs)

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Full Range of Flow (P0 - P100) (cfs)

Approved Withdrawal (cfs)25% of Average Daily Flow (25% ADF) (cfs)Daily Median Flow (P50) (cfs)

7-Day, 10-Year Low Flow (7Q10) (cfs)20% of Average Daily Flow (20% ADF) (cfs)

Annual Hydrograph - Larrys Creek


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Ecological Flow Management

Cold-water Instream

Flow Study PA, MD,USACE, USGS, PFBC

TNC Instream FlowProject in PA

Environmental Flow

Study USACE & TNC


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Natural Gas Well DevelopmentWater Use Data

Total water withdrawn as of 01/2010: 262.2 M/gal 117.5 M/gal from public water supply (45%) 144.7 M/gal from surface water sites (55%)

Average total volume of fluid used per well: 2.7 M/gal Average fresh water used per well: 2.2 M/gal Average flowback reuse per well: 0.5 M/gal

Average recovery of fluids: 13.5%

Reuse 17.8 M/gal Disposal 11.6 M/gal

131 wells reported


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Station Locations

Increased activities associated with natural

gas development

Sensitivity of headwater areas

Public concerns

Site considerations

Remote Water Quality Monitoring

Network

Parameters of interest

Conductance

Temperature, pH, dissolved oxygen, turbidity,

and depth

Supplemental data

Calibration visits and field checks

(integration with existing programs)

Grab sampling for lab analyses and flow

measurements


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Dissolved Oxygen

Depth

Conductance

Turbidity

Temperature

pH


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Current Analysis

Science-based decision making

Cumulative impacts data driven

Water use can be accommodated

Timing and location of withdrawals

Disposal of produced fluids and brines

Remote real-time water quality monitoring

The move from exploration to production maynecessitate yet more regulatory changes


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January 29, 2010

Susquehanna River Basin Commission

Jennifer Hoffman

Chief, Monitoring &

Assessment Section

717-238-0426 ext. 111

[email protected]

SRBC Natural Gas Development" on January 29, 2010 at the Science of the Marcellus Shale symposium at...

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