B08_-_ATT_11_-_figures_prime_hook_for_removal_action_-_3_pg.pdf

PRIM

EHOOK CREEK

1,000

1, ,0

SOURCES: FIGURES 3 AND 15 OF SUPPLEMENTAL SITE INVESTIGATION FOR WETLANDS ADJACENT TO THE FORMER TRAP RANGE, PRIME HOOK NATIONAL WILDLIFE REFUGE, MILTON, DELAWARE, PREPARED BY GEOSYNTEC CONSULTANTS, DATED DECEMBER 2017 (2017 SSI).

GROUND-WATER CONTAMINATION FROM LEAD SHOT AT PRIMEHOOK NATIONAL WILDLIFE REFUGE, SUSSEX COUNTY, DELAWARE, PREPARED BY DANIEL J.

SOEDER AND CHERIE V. MILLER (U.S. GEOLOGICAL SURVEY), DATED 2003 (2003 GROUNDWATER REPORT).

AERIAL PHOTOGRAPH REVIEWED ON GOOGLE EARTH, DATED JUNE 2018.

APPROXIMATE SCALE IN FEET

PROJECT NO.:

DRAWN BY:

CHECKED BY:

APPROVED BY:

FIGURESITE PLAN

US FISH & WILDLIFE SERVICE

PRIME HOOK NATIONAL WILDLIFE REFUGE

MILTON, DELAWARE

150 300 450 600

LEGEND

DROP ZONE

(REMEDIATED IN 2003)

FORESTED WETLAND

SLOUGH

GRASSY FIELD

APPROXIMATE PRIME HOOK NATIONAL WILDLIFE REFUGE PROPERTY LINE (AS DEPICTED IN

THE 2017 SSI AND 2003 GROUNDWATER REPORT)

REMOVAL ACTION EXTENTS (AS DEPICTED IN THE 2017 SSI)

UNDEFINED REMOVAL ACTION EXTENTS (AS DEPICTED IN THE 2017 SSI)

GROUNDWATER FLOW DIRECTION (AS REPORTED

IN THE 2003 GROUNDWATER REPORT)

NOTES

SITE FEATURES ARE DIGITIZED FROM THE ABOVE LISTED SOURCES.

THE GROUNDWATER FLOW DIRECTION IS BASED ON 2000-2001 GROUNDWATER GAUGING DATA REPORTED IN THE 2003 GROUNDWATER REPORT. ACCORDING TO THE 2003 GROUNDWATER REPORT, GROUNDWATER FLOWS FROM UPLAND AREAS ON THE FORMER SHOOTING RANGE TOWARDS THE FORESTED WETLAND BEFORE ULTIMATELY DISCHARGING

INTO THE SLOUGH, A TRIBUTARY OF THE PRIMEHOOK CREEK.

SHOT CONTOUR (PELLETS PER SQUARE FOOT, AS DEPICTED IN THE 2003 GROUNDWATER

REPORT)

FORMER TRAP HOUSES

DROP ZONE AREA WHICH HISTORICALLY CONTAINED GEOTEXTILE COVER