Hedin Environmental's Passive Treatment Systems

System / Location	Year	Average Influent Quantity/Quality	Effluent Quality	Design	HE Role	O&M	Client
Loyalhanna Creek, Upper Latrobe	2010	500 gpm, net alkaline, Fe 40 mg/L	under construction	three aerobic settling ponds and constructed wetland	Design, permitting, project management	to be determined	Loyalhanna Watershed Association
Teerco, Seep B	2010	net acid, Fe 80 mg/L	under construction	ALD, aerobic settling ponds, constructed wetlands	assistance with design, permitting, and CO	to be determined	Langan Engineering
Wingfield Pines	2009	1,500 gpm, net alkaline , Fe 15 mg/L	pH 8, Fe <1 mg/L	5 aerobic settling ponds and constructed wetland	Design, permitting, construction oversight, O&M Plan	inspections; iron removal every 10 years	Allegheny Land Trust
Duquesne  Slag	2009	net acid, Fe 15 mg/L; Mn 3 mg/L	net alkaline, Fe and Mn < 1 mg/L	ALD, settling pond, 2 constructed wetlands	conceptual design and oversight	inspections; iron removal every 10 years	LaFarge North America through R.A.R. Engineering
Filson 7	2008	80 gpm, net acid 180 mg/L, Fe 105 mg/L	net alkaline, Fe 20 mg/L	3 ALDs and 2 settlings ponds that discharge into large existing wetland	Design, permitting, construction oversight, O&M Plan	inspections; iron removal every 10 years	Mill Creek Coalition
Bilger Run	2008	20 gpm, net acid 50 mg/L, Fe 10 mg/L	net alkaline, Fe <1 mg/L	ALD and existing settling pond	Design, permitting, construction oversight, O&M Plan	Inspections, pond elevation modifications	Anderson Run Watershed Association
Glenraffan Creek	2008	84 gpm, net alkaline, pH 7.2, Fe 8 mg/L	pH 7-8, Fe < 1 mg/L	aerobic settling pond	evaluate discharge, conceptual treatment design, permit review	inspections, pond cleanout every 15-20 years	Pennoni Associates
Teerco, Seep A	2007	pH 5-6, Fe 2-10 mg/L	pH 7-8, Fe and Mn < 1 mg/L	ALD and constructed wetland	design, permitting, construction oversight	inspections;	Langan Engineering
Wilson Run, Westmoreland County	2007	150-1200 gpm, net alkaline, Fe 30 mg/L	pH 7, Fe 1-5 mg/L Fe	cleaned out and redesigned setttling pond	Design, permitting, construction oversight, O&M Plan	Inspections, iron removal (every 15-20 years)	Sewickley Creek Watershed Association
LC20D / Little Coon Run, Clarion Co.*	2007	55 gpm, net acid 200 mg/L, Fe 110 mg/L	Fe<5 mg/L, pH 5-6	ALD, pond, wetland	Design, permitting, construction oversight, O&M Plan	Inspections, iron removal (every 15-20 years)	Farmington Township (Clarion County)
Lowber / Sewickley Creek, Westmoreland Co.*	2007	1,800 gpm, net alkaline, pH 6.2, Fe 74 mg/L	Fe<1 mg/L, pH 7-8	Iron Oxide production ponds (6) and aerobic wetland	Design, permitting, construction oversight, O&M Plan	Inspections, iron removal (every 5 - 10 years per pond)	Sewickley Creek Watershed Association
Middle Branch Redesign, Twomile Run, Clinton County	2007	50 gpm, net acid 400-700 mg/L, pH 3, Al 50-90 mg/L, Fe 10-20 mg/L	net alkaline, Fe and Al < 2 mg/L	deep mine collection system, four vertical flows ponds, settling pond, wetland	improved minewater collection; redesigned system; contruction oversight	inspections, flow and water level adjustments	Trout Unlimited
Lewis System, Sullivan County	2006	75 gpm, net acid 75 mg/L, pH 4, Al 10 mg/L	pH 6-7, net alkaline, Al and Fe < 1 mg/L	vertical flow pond	Design	Inpsections	Moshannon District Mining Office
Audenreid / Catawissa Creek, Schuylkill Co.	2005	8,500 gpm, net acid 70 mg/L, Al 8 mg/L, Fe < 1 mg/L	Al < 3 mg/L total, < 1 mg/L dissolved	Three large self-flushing limestone tanks, 2 ponds	Developed conceptual design; reviewed plans and specs	Inspections, sludge removal	Schuylkill Co. Conservation District
Robbins Hollow Complex / Kettle Creek, Clinton Co.*	2005	< 5 - 200 gpm, acidity 200-500; Al 40-80; Fe 1-60; Mn 10-15	variety of discharges; summed flow is pH 6-7 with Fe and Al < 1 mg/L	4 minisystems incuding an ALD, two OLDs, 4 VFPs, and ponds	Design, permitting, construction oversight, O&M Plan	Inspections, flushing	Trout Unlimited
Mitchell Self-Flusher / Babb Creek, Tioga Co.*	2005	40 gpm, acid 440 mg/L, Fe 10 mg/L, Al 30 mg/L	initally, pH 5-6 Fe and Al < 3 mg/L; declined to 50% effective after 6 months	Self-flushing limestone bed, settlign pond	Design, permitting, construction oversight, O&M Plan	Inspections	Babb Creek Watershed Association
K&J Coal, Pond 23 Site  (bond forfeiture COA)	2005	75 gpm, pH 5, Al 2 mg/L, Mn 5 mg/L, Fe < 1 mg/L	Net alkaline40 mg/L, Al < 1 mg/L; Mn <1 mg/L; Fe < 1 mg/L	VFPs (2), flush system, settling pond	Major Bond Forfeiture COA; managed technical components of passive treatment system design, construction oversight, and O&M Plan	Inspections, flushing of VFPs	Cambria District Mining Office
K&J Coal, Pond 4 Site (bond forfeiture COA)	2005	200 gpm, pH 4.5, Al 10 mg/L, Mn 40 mg/L, Fe < 1 mg/L	Net alkaline 90 mg/L, Al < 1 mg/L; Mn <1 mg/L; Fe < 1 mg/L	VFPs (2), flush system, settling pond and oxic LS bed
K&J Coal, Pond P Site (bond forfeiture COA)	2005	150 gpm, pH 3.5, Al 15 mg/L, Mn 40 mg/L, Fe < 1 mg/L	Net alkaline 40 mg/L, Al < 1 mg/L; Mn <5 mg/L; Fe < 1 mg/L	VFPs (3), flush system, settling pond,  wetland
K&J Coal, Gaber-Brown Site (bond forfeiture COA)	2004	200 gpm, pH 3.5, Al 25 mg/L, Mn 40 mg/L, Fe < 1 mg/L	Net alkaline 50 mg/L, Al < 1 mg/L; Mn <1 mg/L; Fe < 1 mg/L	VFPs (2), flush system, settling pond, oxic LS bed, wetland
LERMD20 / Elk Run, Jefferson Co.*	2003/04	125 gpm, net acid 230 mg/L, Fe 15 mg/L, Al 12 mg/L	Net alkalinity 100 mg/L, Fe < 1. Al < 1	Downflow compost bed, upflow LS bed with flushing, pond, wetland	Design, permitting, construction oversight, O&M Plan	Inspections, flushing	Young Township (Jefferson County)
Anna S Mine Complex / Babb Creek, Tioga Co.	2003	440 gpm, pH 3, Fe 10 mg/L, Al 10 mg/L	Net alkaline, Fe < 1 mg/L, Al < 1 mg/L	VFPs (4), flush system, and polishing wetland	Conceptual design, construction oversight and project management	Regular flushing	Babb Creek Watershed Association
Hunters Drift / Babb Creek, Tioga Co.	2003	330 gpm, pH 3, Fe 50 mg/L, Al 25 mg/L	Net alkaline, Fe < 1 mg/L, Al < 1 mg/L	VFPs (4), flush system, and polishing wetland	Conceptual design, construction oversight and project management	Regular flushing	Babb Creek Watershed Association
Soberdash, Eastern Discharge (bond forfeiture COA)	2003	1 - 200 gpm; pH 3-4, Fe 10-50 mg/L, Al 1-10 mg/L	per PADEP, net alkaline with low metals under design conditons	oxic limestone channel, oxic limestone bed	conceptual design and plan rewiew (with RAR Engineering)	should be minimal but actual O&M unknown	Cambria District Mining Office
Soberdash, MD1 and MD2 (bond forfeiture COA)	2003	5-50 gpm, net acid, pH 5, 12-35 mg/L	per PADEP, net alkaline	ALD, pond, wetland	conceptual design and plan rewiew (with RAR Engineering)	should be minimal but actual O&M unknown	Cambria District Mining Office
Scrubgrass / Scrubgrass Creek, Allegheny Co.	2003	175 gpm, net alkaline, pH 6.0, 70 mg/L Fe	Net alkaline, pH 6.5, Fe 30-40 mg/L	Two settling ponds with Maelstrom Oxidizer	System redesign and project management	Routine O&M handled by IOR	Scott Conservancy
Ace Drilling, Site 26 (bond forfeiture COA)	2002	20-100 gpm, net acid, pH 5, Fe 130 mg/L, Al 1-2 mg/L	net alkaline, Fe < 2 mg/L	ALD, reconfigured settling pond constructed wetland	conceptual design and plan review (with Minetech, Inc.)	routine flushing by watershed association	Cambria District Mining Office
Ace Drilling, Site 26A (bond forfeiture COA)	2002	1-10 gpm, pH 3-4, Fe 130 mg/L, Al 9 mg/L	net alkaline, Fe and Al < 2 mg/L	VFP, reconfigured settling pond, oxic limestone bed	conceptual design and plan review (with Minetech, Inc.)	routine flushing by watershed association	Cambria District Mining Office
JRU 88 and 89 / Johnson Run, Elk Co.*	2002	100 gpm, Fe 5 - 15 mg/L, Al 10 mg/L, net acid 100 - 150 mg/L	Net alkalinity 60 mg/L, Fe < 1 mg/L, Al < 1 mg/L	Self-flushing LS, VFP, settling Pond, and aerobic wetland	Complete design and project management	Regular flushing	North Central RPDC
Conifer East, Beaver Run, Jefferson Co.	2001	10-50 gpm	net acid, pH 4, Fe 1-10 mg/L, Al 1-8 mg/L	alkaline-amended wetland followed by oxic limestone bed	Complete design and project management	no routine O&M; some repairs due to flood and muskrat damage	Knox District Mining Office
Little Hefren / Toms Run, Cook Forest State Park, Clarion Co.*	2001	15 gpm, net acid, pH 5.8, Fe mg/L Fe	Net alkaline, Fe 1-5 mg/L	ALD, settling pond and aerobic wetland	Complete design and project management	Periodic channel cleanout	DEP 319 Program
Keystone Power Plant, Armstrong Co.	2000	5-40 gpm, net acid, pH 3.5, Fe 40 mg/L, Al 6 mg/L	alkaline water with <2 mg/L Fe and Al	VFP and constructed wetland	Conceptual design and construction consultation	reported to be minimal by client	GAI Consultants
Conifer West, Beaver Run, Jefferson Co.	1998	0-200 gpm, net acid, pH 4.4, Fe 30 mg/L, Al 2 mg/L	net alkaline with Fe and Al <1 for 4 years; variable effluent since 2003	ALD, settling ponds, and aerobic wetland	Complete design and project management	periodic ALD flushing which has not occurred	Knox District Mining Office
C&K Pit 601 / Mill Creek, Jefferson Co.	1997	80 gpm, net acid, pH 5.7, Fe 80 mg/L	Net alkaline, Fe < 7 mg/L	ALD, reconfigured constructed wetland	Design of ALD and reconfigured system	To our knowledge, none	C&K Coal (bankrupt)
SR-101A / Slippery Rock Creek, Butler Co.	1996	30 gpm, net acid, pH 5.5, Fe 90 mg/L	Net alkaline, Fe 9 mg/L	ALD, settling pond and aerobic wetland	Conceptual design, project management	Negligible, periodic channel cleanouts	Knox District Mining Office
Delta Maust, Somerset Co. (bond forfeiture COA)	1996	25-50 gpm, net acid, pH 3, Fe 23-34, Al 6-7	reported by PADEP to be net alkaline, Fe and Al < 2 mg/L	two VFPs followed by aerobic wetland	system design (with CDS, Inc.)	reported to be negligible by PADEP	Cambria District Mining Office
SR 114D, Slippery Rock Creek, Butler Co. (bond forfeiture COA)	1995	125 gpm, net acid, pH 5.8, Fe 40 mg/L	Net alkaline with Fe 1-10;	ALD, settling pond and aerobic wetland	Conceptual design, construction oversight, project management	Periodic channel cleanout; one spillway renovation	Knox District Mining Office
SR-114B, Slippery Rock Creek, Butler Co. (bond forfeiture COA)	1995	40 gpm, net acid, pH 6.0, Fe 20 mg/L	Net alkaline, Fe < 10	ALD and settling pond	Conceptual design, construction oversight, project management	None	Knox District Mining Office
Area 1 Passive System, Sequatchie Valley Coal, Dunlap TN	1995	200 gpm; net acid, pH 5.8, Fe 120 mg/L, Mn 40 mg/L	Net alkaline discharge with Fe < 1	ALD, settling ponds, aerobic wetland	Conceptual design and construction consultation	None during first two years;	Sequatchie Valley Coal