| Action Date |
Action |
Description |
DEC Staff |
| 9/10/1992 |
Site Added to Database |
Petroleum contaminant. |
Former Staff |
| 2/12/1993 |
Update or Other Action |
Memorandum for CENPA-EN-TE-DM Subject: Summary of field activities and lab data for Seward Army Recreational Camp Investigation of Soil and Groundwater Contamination. Objective of investigation was to determine the soil and water contamination at the site. Text states during development of monitoring wells 105, 106, and 107 floating fuel was observed on purge water. The presence of observable fuel is considered evidence of contamination. Consequently these wells were not sampled.
AP 101: 1,900 mg/kg diesel range organics (DRO) may be also #6 diesel or bunker C, near the surface at north side of Building T-60 near the location of AP-101, 240 mg/kg DRO, AP-105 2,300 mg/kg DRO at 25 feet below ground surface, with lesser concentrations as deep as 30 feet. Surface contamination was observed near the UST, but appeared to be minor (according to professional judgement), AP-106: 2,700 mg/kg DRO at 15 feet below ground surface with lesser concentrations at 25 feet. Source of contamination appears to be the nearby tank. BTEX was found at AP-116, benzene at 6.6 mg/kg and ethylbenzene at 26 mg/kg. |
Louis Howard |
| 1/16/1995 |
Update or Other Action |
EMCON Final Release Investigation (RI) report Building T-60 dry well and Former 1,000 gallon underground storage tank system (UST) Seward Army Recreational Camp Contract DACA85-93-D-0013 Delivery Order Number 0026 dated December 1995. Approximately 50 cubic yards have been identified as containing diesel range organics (DRO) above category "A": 50 mg/kg gasoline range organics (GRO), 100 mg/kg DRO, 2,000 mg/kg residual range organics (RRO), 0.1 mg/kg benzene or 10 mg/kg Total BTEX (benzene, toluene, ethylbenzene, and total xylenes). No other contaminants were detected from the full suite of analyses. No groundwater samples exceeding cleanup criteria. Recommendations were to implement natural attenuation and groundwater monitoring for site remedial action.
However, the exact extent of contamination was not fully delineated. Text states hydrocarbon impact was bound to the north by AP 102, and to the east by soil borings AP 134 and AP 135. The field program did not delineate the western limit of hydrocarbon impact and it is suggested that the contamination does not extend beyond AP 132. Evidence is based on a quality assurance (QA) split and quality control (QC) duplicate samples collected in the 14-18 feet below ground surface zone of AP 132, which did not verify the presence of DRO above 100 mg/kg. Southern limit of hydrocarbon impacted soils was not delineated by the field program due to the presence of Building T-60.
Groundwater samples only detected low levels of petroleum hydrocarbons below ADEC maximum contaminant levels (MCLs). However, no monitoring wells were located downgradient of the soil impact. |
Louis Howard |
| 5/1/1995 |
Update or Other Action |
Groundwater sampling results for Seward Army Recreation Camp: AP-100, AP-138, AP-139, AP-140, AP-141, AP-145, AP-156 and AP-102, AP-134: below action levels for DRO, BTEX, AP-103: 5.2 mg/L DRO ND for BTEX, AP-104 85 mg/L DRO below action levels for BTEX, AP-105:14 mg/L DRO and below action levels for BTEX, AP-142: 3.6 mg/L DRO and below action levels for BTEX, AP-147 22 mg/L DRO and below action levels for BTEX. |
Louis Howard |
| 10/24/1995 |
Update or Other Action |
EMCON Alaska Workplan Addendum Number 1 sampling analysis, QA/QC plan Release Investigation contract Number DACA85-93-D-0013 Delivery Order Number 0026 October 1995 received by ADEC. The addendum to the April 1995 approved SA, QA/QC plan for RI activities allows the contractor to conduct 2 groundwater sampling and analysis events to further document impacts to groundwater associated with releases from 2 USTs and the pipeline distribution system at the site. First event will be in early October 1995 and 2nd event will be four months later. The mod. also allows the contractor to install slow release oxygen release compound to 12 selected groundwater wells at the Seward Army Recreational Camp during the first groundwater sampling event. 18 wells are currently at the site. Primary goal is to document groundwater quality with respect to petroleum hydrocarbon constituents in the vicinity of the former locations of the 2 USTs and associated pipe network at the site. Secondary goal is to evaluate the performance of the slow release oxygen containing compound as a means of enhancing natural biodegradation of petroleum hydrocarbon impacted groundwater at the site.
DRO was detected at a maximum value of 22,000 mg/kg in AP 142 at 10-14 feet below ground surface. DRO groundwater contamination was found to be at its highest in AP 142 at 85 mg/L. Estimates of soil volumes above 100 mg/kg: 5,000 gallon heating fuel UST-1,000 cubic yards, Fish House Pipeline Release Area-6,000 cubic yards, Bathroom T Area-none. |
Louis Howard |
| 11/14/1995 |
Update or Other Action |
Soil disposal from the Seward Recreation Camp treated by Alaska Soil Recycling was received. September 5 - 8, 1995 ASR received 195.81 tons of petroleum impacted soils from the site. On October 3, 1995 thermal treatment of this soil was completed at ASR's 2nd Avenue facility. Post remedial analysis reveals that this soil meets the ADEC level A criteria. |
Louis Howard |
| 11/27/1995 |
Update or Other Action |
EMCON Alaska Remedial action report/Corrective action report, UST removal Contract Number DACA85-94-D-0016 Delivery Order Number 0001 dated August 1995 received. Based on confirmation soil samples collected from along the former fuel pipeline trench, remaining impacted soils appear to be concentrated in three areas: at the northwest corner of the Fish House, northwest of Building T-57, and west of Building T-60. Fish House soils appear to be impacted from a defect in the former fuel pipeline and the other 2 buildings appear to have soil impacted from defective piping unions. 5,000 gallon UST: based on confirmation soil samples from the perimeter of the excavation, impacted soils remain near the north and east excavation perimeter. Impacts appear to have been caused by leaks in the fuel piping which ran from the UST to the AST and from overfilling the AST. 1,000 gallon UST: Based on field screening results obtained from during UST removal activities, impacted soils surrounding the former 1,000 gallon UST appeared to be the result of overfilling of the tank. Review of the confirmation samples indicate the POL contamination meets level A criteria and EMCON recommends no further remedial action be conducted for this UST.
Evidence of impacted soils obtained from the borings conducted by the USACE in September 1992 appear to be related to the drywell (floor drain outlet) from Building T-60. A perched zone of saturated soil, located directly above a silt layer (7 feet below ground surface) was observed nearby the 1,000 gallon UST. The perched zone is inferred to be the result from the floor drain outlet. The Seward Recreational Camp Maintenance Supervisor has been continuously discharging water to the floor drain to prevent the water lines from freezing. However, soils in the vicinity of the former 1,000 gallon UST were not significantly impacted by this potential contamination source and a clean closure is recommended for the UST site. |
Louis Howard |
| 12/30/1995 |
Update or Other Action |
EMCON Alaska remedial action report addendum Number 1 dated November 1995 Contract Number DACA85-94-D-0016 Delivery Order Number 0001. Soil removal was conducted at the four sampling locations along the heating fuel pipeline on September 5-8, 1995. Approximately 200 tons of soil were removed and transported to Alaska Soil Recycling for thermal treatment. Excavation was backfilled with "clean" fill imported from Metco. 4 of the confirmation samples were below 100 mg/kg DRO cleanup level. The fifth sample was 1,310 mg/kg which was obtained from the southern edge of Excavation Number 3 It was believed that the amount of soil remaining in place was 10 cubic yards (not verified with further soil sampling or soil borings at this particular location-best guess).
Original contract order was for 60 tons, USACE increased contract volume to 120 tons and later to 200 tons to account for the increased volumes of impacted soils being encountered during the removal action. During the soil removal action at Excavation Number 3, Department of the Army personnel, stopped by to visit the site operations. After seeing the soil removal activities occurring at Excavation Number 3 EMCON was directed (by the USACE quality assurance representative) to stop any further soil removal at this excavation. *Basis for stopping excavation was not given in the document (safety, budget shortfall, volume of soil excavated, or arbitrary). |
Louis Howard |
| 1/24/1996 |
Update or Other Action |
Memorandum for CENPA-EN-EE-AI subject: tap water results Recreational Camp, Seward, Alaska. Tap water was sampled on December 14, 1995 to confirm analytical results from previous testing of the drinking water supply at the site (EMCON Alaska Final RI report Building T-60 Dry Well and Former 1000 gallon UST December 1995). The tap water was analyzed for DRO by method 8100 (ADEC Modified) and BTEX by Method 8020 A. *Note to file methods used should have been from Drinking Water methods (e.g. 502.2 or 524.2 benzene). A tap water sample collected in May 1995 by EMCON contained an estimated 0.33 ug/L benzene and 0.37 mg/L DRO. MCL for benzene is 5 ug/L and at the time no standard was available for DRO other than taste, odor or sheen. *18 AAC 75 now has a cleanup level for DRO in groundwater at 1.5 mg/L. No benzene was detected in the December 1995 sample. However the MRL for benzene was 0.5 ppb which is above the detected 0.33 ppb. Therefore the December 1995 results neither confirm nor refute the previous detection of benzene. The ADEC. 1995 results contained 0.2 mg/L of an unknown hydrocarbon with several peaks. Some peaks were in the early diesel range, but additional peaks were in the gasoline range and were not quantitated, and did not contribute to the 0.2 ppm DRO level. Recommendation: Another tap water sample should be collected and tested for DRO, benzene and GRO. GRO testing is required for the light compounds seen in the DRO chromatogram. MRL for benzene must be 0.3 ppb or lower and for GRO/DRO 0.1 ppm or lower. |
Louis Howard |
| 2/28/1996 |
Update or Other Action |
Final Release investigation report for Former Heating Fuel UST and Distribution System Seward Army Recreational Camp Contract Number DACA85-93-D-0013 Delivery Order Number 0026 dated February 1996. Site was formerly known as Fort Raymond, an army post that was established during WW II to defend the Port of Seward and Resurrection Bay. After the war, Fort Raymond was closed, and the land was transferred to the city of Seward. For the past 30 years, the Army has leased the land from the city for the use as a recreational center. Adjacent land uses include: a forested residential area to the north side of the camp, the Air Force Recreational Camp to the south, a wooded public park to the east and an elementary school to the west. Matrix score sheet results = 48 Level "A" criteria 100 mg/kg DRO, 50 mg/kg GRO, 2,000 RRO, Benzene 0.1 mg/kg and BTEX at 10 mg/kg. |
Louis Howard |
| 2/29/1996 |
Update or Other Action |
Army submitted corrective action plan for remediation at the Seward Army Recreation camp. The letter and attachment are meant to fulfill the requirements of 18 AAC 78.250 for submittal of a Corrective Action Plan for site remediation at the facility in Seward. The Army removed a 5,000 gallon UST and piping system from the site in April 1995 and at that time removed and treated off-site a limited amount of near-surface, diesel fuel contaminated soil. The tank and soil removal work was described in 2 reports: Remedial action report/corrective action report, Seward Army Recreation Camp UST Removal EMCON Alaska, November 1995 and Remedial Action Report Addendum Number 1 Seward Recreation Camp UST Removal EMCON Alaska, November 1995, previously submitted by the Army to ADEC in September 1995. The reports stated that the UST itself did not leak, but that soil contamination occurred because of overfill spills at the UST and from leaks in the underground piping system.
A release investigation (RI) was conducted in May 1995 to determine the extent of contamination. A draft report of this work has been previously submitted (Draft RI and corrective action plan former heating fuel UST and distribution system Seward Army Recreational Camp EMCON Alaska, September 1995). The final version of the report was mailed to Louis Howard under a separate cover on February 26, 1996. The RI determined that subsurface soil and groundwater at the site has been contaminated with DRO and BTEX compounds in 2 distinct areas. One area of soil and groundwater contamination is the former 5,000 gallon UST and the other is the Fish House. The RI also determined that contamination (at the time of the RI) has not traveled in the direction of the City of Seward drinking water well field.
The RI report made recommendations for remediating the site. The 5,000 gallon UST was recommended to be remediated by air sparging for the groundwater contamination and bioventing for the soil contamination in the vadose zone. The fish house was recommended to be remediated by intrinsic bioremediation/natural attenuation. The actual remediation work at the site will be performed using an Alaska District Corps of Engineers remediation contractor. The COE is presently negotiating a contract with OHM remediation services to perform the remediation system installation, operation, and monitoring. The contractor is required to submit a site work plan (the work plan will contain specific treatment system design details, proposed methods of installation, and monitoring methods) for review by the COE, Army and ADEC. The contractor will not begin any system installation work until the work plan has been reviewed and approved by these three entities. The Army will provide a copy of the draft work plan to ADEC for review. It is the Army's desire to have the contractor complete system installation before May 15, 1996. The Army requests the ADEC be willing to perform a work plan review in 10 days instead of the 30 day review time stated in regulations. Signed, Albert J. Kraus Colonel, U.S. Army Director of Public Works. |
Louis Howard |
| 4/19/1996 |
Update or Other Action |
Final Groundwater Monitoring Report October 1995 sampling event date April 1996 received Contract Number DACA85-93-D-0013 Contract Number 0026. Recommendations made in document: 2 more wells were installed by USACE since October 1995 and should be included in future groundwater sampling events. The ORC socks are probably depleted and the number of wells and their locations are not sufficient to use ORC effectively. It is recommend that the ORC socks be removed and disposed of appropriately. Twenty new ORC socks are still available and can be placed into two selected monitoring wells for continued use and observation of results. It is recommended that sulfate analysis be added to future groundwater monitoring events to monitor anaerobic intrinsic bioremediation. Additional groundwater sampling events are necessary to evaluate the effects of seasonal water table fluctuations on analytical results. AP 147 had benzene at 18 ug/L, DRO ranged from 5.3 mg/L in AP 142 to 130 mg/L in AP 105. PAHs did not exceed any Region 3 RBCs. |
Louis Howard |
| 6/6/1996 |
Update or Other Action |
Final chemical data report for additional monitoring wells by Alaska COE dated April 1996. Soil contamination exceeding level B limits exists at AP 179 for DRO. No DRO was detected in the soil at AP 178 and GRO was not analyzed. Soil at the groundwater interface at AP 178 is petroleum contaminated but was not sampled and tested (despite it stating further in the report results for groundwater with DRO contamination). Groundwater is contaminated at both wells with petroleum. AP 179 had DRO ranging from 2.6 to 5.5 mg/L and AP 178 had 1.4 mg/L DRO. DRO in soil at levels up to 795 mg/kg was found in AP 179. No water samples were tested for PCBs, pesticides, BTEX or semi-volatile organic compounds. |
Louis Howard |
| 9/5/1996 |
Update or Other Action |
EMCON Alaska Inc. groundwater monitoring report April 1996 sampling event dated August 1996 received. ORC socks were installed in October 1995 and removed from the monitoring wells in April 1996 sampling event in wells: AP100, 102, 103, 104, 105, 134, 141, 142, 147, 156. The ORC socks had hardened to a solid material (similar to cement) and some were covered in reddish brown iron deposits. Upon completion of sampling activities, ORC socks were added to select wells: AP 105, AP 134, AP 142, AP 178, and AP 179. BTEX and PAHS were not detected above action levels in any well. DRO ranged from 1.0 mg/L in AP 178 to 240 mg/L in AP 105. There does not appear to be any correlation between addition of ORC to the monitoring wells and any reduction in petroleum hydrocarbons concentrations. In fact, several of the monitoring wells that had ORC socks added to them exhibited an increase in petroleum concentrations. |
Louis Howard |
| 9/9/1996 |
Update or Other Action |
U.S. Army Corps of Engineers Final Chemical Data report dated August 21, 1996 for New Monitoring wells Summer 1996 received. Soil sample results obtained from borings during installation was found to be above ADEC level A cleanup levels in samples from AP 181 and AP 183. 20 to 25 feet below ground surface in AP 181 had DRO levels up to 3,800 and 1,200 mg/kg and AP 183 had DRO levels of 100 and 760 mg/kg DRO at 25 and 30 feet below ground surface respectively. AP 183 had DRO in groundwater at 1.6 mg/L (slightly above 18 AAC 75 Table C cleanup level for DRO at 1.5 mg/L). |
Louis Howard |
| 11/18/1996 |
Update or Other Action |
June 1996 Groundwater Monitoring Report Contract Number DACA85-93-D-0013 Delivery Order Number 0026 Modification Number 4 received. The report represents the June 1996 groundwater sampling event. Monitoring wells AP 137, 138, 139, 145 were sampled. DRO levels were below method detection limit of 0.1 mg/L for AP138, AP139, AP145. AP 137 had DRO at 0.1mg/L. BTEX levels were below method detection limits for all monitoring well samples. Groundwater elevations were observed to increase from 0.10 to approximately 0.12 feet between the May and June 1996 sampling events. The monitoring well data do not show any indication of increasing contaminant concentrations. The petroleum hydrocarbons impacts to groundwater appear to remain confined within the limits of the property boundaries. |
Louis Howard |
| 11/27/1996 |
Update or Other Action |
Staff reviewed and commented on the May 1996 Groundwater Monitoring report for the site Contract Number DACA85-93-D-0013 Delivery Order 0026 Modification Number 4 received on October 31, 1996. After reviewing the data, it appears the "sentinel" wells AP137, AP138, AP139, AP145 were non-detectable or below any MCLs/human health risk based concentrations for BTEX and petroleum aromatic hydrocarbons. ADEC requests further information on whether the holding times were met/exceeded, sample cooler temperatures were within acceptable limits and any other quality control issues related to this particular sampling event. After the next round of sampling and data generated from this event, ADEC requests a meeting with the Army to discuss the results and possible amendments to the monitoring schedule at this site. |
Louis Howard |
| 3/19/1997 |
Update or Other Action |
Staff reviewed and commented on the August and September 1996 groundwater monitoring reports for Seward Recreational camp contract Number DACA85-93-D-0013 delivery order 0026 mod. Number 4. After reviewing the data, it appears there is cause for concern regarding well AP147. It was noted in the text that during September 1996 groundwater sampling event, approximately one foot of free product was observed in the well.
In areas at the facility where free product is observed to be present, the Army should have reported to ADEC in the manner and at the times described in 18 AAC 78.240(b). The Army will need to remove all measurable free product encountered at the facility following parameters outlined in 18 AAC 78.240. ADEC requests a written report responding to the issues raised in this letter within 30 calendar days of receipt of this letter. ADEC will consider extending the deadline for submittal of the report if just cause is provided. |
Louis Howard |
| 4/21/1997 |
Update or Other Action |
Army letter to ADEC regarding response to March 19, 1997 letter August and September 1996 Groundwater monitoring reports Seward Army Recreational Camp. As discussed with you in a March 27, 1997 meeting with Louis Howard, Cristal Fosbrook, Thomas Reed and Sam Swearingen, it was agreed that due to the hydrogeological conditions, free product recovery was not feasible at this site. Due to the depths of groundwater, a french drain or horizontal recovery system would not be feasible. Installation of such a system could provide a preferential pathway for migration to groundwater.
The presence of 0.9 inches of diesel fuel has been confirmed in the August/September 1996 reports and January 1997 reports. This free product does not appear to be migrating, but is a potential contributing source for downgradient dissolved phase contamination. USARAK and the ACOE are currently using oxygen release compounds (ORC), an innovative technology, to enhance bioremediation at the site. Further, ORC has been added to the groundwater at AP 147, the well in which free product has been detected in. Sampling results have indicated a drop from 10 ppb benzene to 0.1 ppb benzene in groundwater impacted by the ORC. ORC impacts to free product at the site are still being evaluated.
The suspected source of this contamination is a removed 5,000 gallon heating oil underground storage tank (UST) and its associated piping. No other potential sources for contributing to groundwater contamination are known to be present on the site. During the summer of 1997, USARAK will be installing approximately 4 microwells in the vicinity of the Fish House to monitor any potential free product migration. These wells along with downgradient monitoring wells and sentry wells along our property will be monitored for contaminants of concern. A sampling event is currently scheduled for June 1997, and will be conducted on at least an annual basis until maximum contaminant levels (MCLs) are achieved. Samples will be analyzed for diesel range organics, nitrate/nitrite, ferrous iron, dissolved oxygen, sulfates, BTEX, and total PAHs. Analytical results will be used to determine the effectiveness of the remedial action in place. Signed William David Brown, Colonel, U.S. Army, Director, Public Works. |
Louis Howard |
| 7/7/1997 |
Update or Other Action |
Staff reviewed and commented on the draft installation plan and site safety and health plan Seward Recreational camp well installations Contract Number DACA85-95-D-0010 delivery order 20. No comments were necessary for the work plan and ADEC approves the document as submitted. ADEC does not review site safety and health plans, but it will keep it for our files. |
Louis Howard |
| 1/26/1998 |
Update or Other Action |
Alaska COE Groundwater monitoring report for July 1997 sampling event dated December 1997 received. Floating product found in wells AP 147 and AP 183. AP 142 had DRO at 4.2 mg/L and AP 141 had DRO at 2.7 mg/L. Both ORC and Non-ORC wells had ferrous iron, sulfate, and nitrate levels consistent with the range of levels previously observed for these wells. ORC socks should be generally replaced every six months (January 1998). At this time it is not planned to replace the ORC socks in the December 1997 upcoming sampling event. The petroleum hydrocarbon impacts to groundwater appear to be confined within the limits of the property boundaries. |
Louis Howard |
| 2/13/1998 |
Update or Other Action |
ADEC comment letter to U.S. Army Sam Swearingen on Groundwater monitoring report October 1997. ADEC has requested continued monitoring for BTEX, DRO, and PAHs at the site. Free product at AP3797 and AP3798 will need to be recovered or, if not present in recoverable amounts will need to be monitored closely. ADEC requests sampling be conducted at AP180 if it is not already scheduled to be sampled. The Army will want to consider installing wells directly south of AP3797 and AP3798 rather than relying on well AP180 to act as a sentinel well for free product or plume migration. |
Louis Howard |
| 5/29/1998 |
Update or Other Action |
Groundwater Monitoring report for December 1997 sampling event received. 21 wells out of 24 wells were sampled. Floating product was found in AP 183 (0.02 feet), AP 3797 and AP 3798 (both at 0.01 feet). ORC socks were removed and were not replaced. Data will be evaluated after the next sampling event to determine if the removal has an effect on contaminant concentrations or dissolved oxygen levels. DRO ranged from 1.1 mg/L in AP 181 to 26 mg/L in well AP 104. No RBCs were exceeded for PAHs and no MCLs were exceeded for BTEX. There was no observed correlation between DO levels and the presence of ORC socks in the wells. The monitoring well data do not show significant indications of increased or decreased contaminant concentrations. The petroleum hydrocarbon impacts to groundwater appear to remain confined within the limits of the property boundaries. |
Louis Howard |
| 7/2/1998 |
Institutional Control Record Established |
Updated USARAK institutional control policies and procedures received. The draft USARAK Command Policy Memorandum, ICs standard operating procedure and revised excavation clearance request have been finalized. To ensure the effectiveness of institutional controls, all organizational units and tenant activities will be informed on an annual basis of the institutional controls on contaminated soils and groundwater in effect on USARAK property. Where institutional controls are applicable to any organization, tenant, or activity, land use restrictions shall be incorporated into either a lease or Memorandum of Agreement, as appropriate. Costs for any and all remedial actions and fines and/or stipulated penalties levied as a result of a violation of an established institutional control shall be funded by the violating activity or organization. |
Louis Howard |
| 8/31/1998 |
Update or Other Action |
ADEC reviewed and commented on draft floating product recovery treatability study work plan contract# DACA85-95-D-0010 Delivery order # 36. After reviewing the document, it appears to address parts of 18 AAC 75.240 Corrective Action with regards to minimizing the spread of contamination and proper handling of investigation derived wastes (IDW). However, notably absent from the work plan was any mention of deliverables required by 18 AAC 78.240(c): Within sixty (60) days after the date of release confirmation, as established by 18 AAC 78.235(h), the owner or operator shall submit to the department: 1) an interim corrective action report informing the department of the status of cleanup actions required by (a) of this section;, 2) a free product removal report that shows free product was removed in compliance with (b) of this section and that provides at least the following information:
name, address of the person supervising or responsible for implementing the free product removal,
estimated amount, type and thickness of free product observed or measured in the wells, boreholes, and excavations,
the type of free product removed,
whether any discharge has occurred or will occur on or off site during the recovery operation and where this discharge occurred or will occur,
type of treatment applied to, and the effluent quality resulting or expected from any substance that has been or will be discharged,
the steps that have been or are being taken to obtain necessary permits for any discharge,
and the disposition of the recovered free product, dissolved phase product, or contaminated soil.
The department has informally extended the deadline for a report required under 18 AAC 78.240 (c) since ADEC was made aware of free product at the site. It is anticipated by ADEC that the Army will furnish reports to ADEC for its review and comment within sixty (60) days of completion of the treatability study at the Seward Recreational Camp. The workplan is approved with the above modifications, which will be submitted upon completion of the study. |
Louis Howard |
| 11/4/1998 |
Update or Other Action |
Staff reviewed and commented on the closure request for 1,000 gallon UST at the Maintenance Building. After reviewing the data, it appears the UST at the Maintenance Building will be considered closed out in accordance with 18 AAC 78 UST regulations. For the time being, groundwater wells AP100, AP102, and AP134 may be discontinued from the groundwater sampling program at the Seward Recreation Camp. ADEC requests the wells NOT be decommissioned as long as petroleum contamination at the "Fish House" remains above the cleanup criteria and continues to impact groundwater. ADEC will provide further comments on the rest of the Seward Recreation Camp in a separate letter.
This closure (for the UST at the Maintenance Building) does not preclude future remediation or site investigation if new information indicates there is previously undiscovered contamination from the former source area or other exposures at the Maintenance building, which cause or exceed an unacceptable risk to human health or the environment. ADEC reserves all of its rights under Title 46 of Alaska Statutes and 18 AAC 78 to request additional activities in the future if necessary to address these risks. |
Louis Howard |
| 11/9/1998 |
Update or Other Action |
Staff reviewed and commented on the groundwater monitoring report received on October 21, 1998. ADEC concurs with the recommendations to modify the groundwater monitoring program for the site. However, it is disconcerting to learn that the plume of petroleum contamination is expanding at the Fish House and measurable free product was discovered in AP181 which previously did not contain free product. ADEC will consider proposals from the Army on what it envisions as a monitoring program for the site as well as any contingencies for recovering and disposing of the free product. |
Louis Howard |
| 12/15/1998 |
Update or Other Action |
Alaska COE Groundwater monitoring report for June 1998 sampling event dated August 1998 received. Groundwater contamination ranged from 1.3 mg/L at AP 182 to 12 mg/L at AP 3797. Floating product have dropped from the highs of 5" to 7" in AP 147 January/February 1997 to 1" to 2" June 1998 sampling event. There has been some migration of the plume. This is the first time floating product has been found in AP 181 since it was installed in May of 1996. AP 183 had no floating product which was present last year but it had DRO at 20 mg/L. DRO levels in AP 182 dropped from 12 mg/L in ADEC 1997 to 1.3 in June 1998. New wells placed south of the Fish House did not have floating product during the June 1998 sampling event. |
Louis Howard |
| 6/18/1999 |
Update or Other Action |
December 1998 DRO trend graphs Army Recreation Camp Seward, Alaska received. There does not seem to be a significant trend pattern towards increasing or decreasing levels of DRO. The most common trend is to not have a trend. When some wells have increased levels of DRO nearby wells have decreased levels of DRO levels. AP 180 has never exceeded the 1.5 mg/L cleanup level for DRO. AP 181 has met the 1.5 mg/L cleanup level in Jul/Dec 1997 but had floating product in June 98 and then in December 1998 was below the 1.5 mg/L level with 0.71 mg/L DRO. AP 182 has exceeded the DRO 1.5 mg/L cleanup level once in ADEC 1997 at 12 mg/L then was below 1.5 mg/L for June/December 1998. AP 183 has had floating product in Jul/Oct/Dec 1997 and 3.20 mg/L and 15 mg/L DRO for June and December 1998 sampling events respectively. AP 3795 was always above the 1.5 mg/L cleanup level but in ADEC 1998 it was at 1.6 mg/L DRO down from 7.0 mg/L in June 1998. AP 3796 has always exceeded the cleanup level of 1.5 mg/L for DRO but the winter sampling events are always highest when compared to the summer or fall sampling events. AP 3797 and 3798 had floating product for Oct/Dec 1997 and was above the 1.5 mg/L DRO level for June/December 1998 events. |
Louis Howard |
| 7/6/1999 |
Update or Other Action |
Floating Product Recovery Treatability Study Report Contract Number DACA85-95-D-0010 Delivery Order Number 36 June 29, 1999 received by ADEC. The pilot scale program was designed using one active and two passive recovery systems, in 3 wells to evaluate effects of casing volume, groundwater depth variation, product thickness, and hydraulic conductivity (as indicated by well recharge). Wells where free phase product had been previously been observed in the past were identified for consideration in the field test program. Additionally, system specific variables such as power requirements, well configuration requirements, and recovery capacity were evaluated and compared. The effectiveness of each recovery system was based on site suitability, product recovery, and maintenance requirements. Conclusions: based on limited observations of this program, free product recovery will be marginally effective due to the relatively thin product thickness and the low skimmer recovery rates. There appears to be little difference in collection abilities between the 2 skimmers tested. The PetroTrap has a larger collection canister capacity, allowing for less frequent maintenance. This is offset somewhat by the observation that recovery rates decrease longer operational periods.
The Xitech skimmer was easier to install and adjust to the proper depth as it was suspended from a rope lanyard. By comparison, the PetroTrap is suspended on a relatively rigid tube which is held in place by a special well cap.
Groundwater/product monitoring program: Continued routine monitoring of water elevation and product thickness at all wells used in the program could ascertain if seasonal pattern exists for product observations. Product has been observed in measurable thickness in 6 wells at various times in the past. This monitoring could verify whether the lack of product in all wells other than AP 147 during the test program was a seasonal event.
Continue use of passive skimmers: If continued product recovery at this site is required, the passive skimmers appear to be adequate for removal of the limited quantities of free product observed at this site. Active collection systems may be more aggressively remove product, however the costs to construct, operate and maintain an active system does not appear warranted given the small thickness of free product present.
Continue product collection: At the start of the extended duration testing, the product thickness was 0.31 feet. After several collection periods, the thickness dropped to less than 0.1 feet and did not recover to greater than 0.13 feet. Continued collection could permanently reduce product thickness to a sheen. Other methods will be required to collect any remaining product. |
Louis Howard |
| 10/12/1999 |
Site Ranked Using the AHRM |
reranked by staff based on new site information. |
Louis Howard |
| 8/3/2000 |
Long Term Monitoring Established |
A draft Long Term Monitoring Plan represents a revised sampling approach, and detail the field sampling and quality control procedures to be followed during future monitoring of groundwater contamination a the Army Recreation Camp. Objectives of the plan is to monitor any long term changes in the magnitude of known diesel contamination in the site groundwater, assure that no site associated groundwater contamination is migrating across the southern (downgradient) border of the site (towards the City of Seward's drinking water supply wells). The LTM plan makes use of existing wells and the placement of wells is not ideal for monitoring some areas of contamination. A small number of additional sentinel and intermediate wells would greatly increase the effectiveness of LTM at this site and should be considered. Sentinel wells (AP 137, 139, 178) will be sampled biannually and intermediate (AP 141, 180, 102), contaminated (AP 104, 105, 142, 147, 179, 181, 182, 183, 3795, 3796, 3797, 3798), and upgradient well (AP 156) to be sampled annually. LTM proposed to sample for DRO only by AK 102 method. |
Louis Howard |
| 12/12/2001 |
Update or Other Action |
1. All organizations conducting activities on United States Army Alaska (USARAK) controlled land are responsible for complying with established institutional controls (ICs). ICs are administrative, procedural, and regulatory measures to control human access to and usage of property. They are applicable to all known or suspected contaminated sites where contamination has been left in place.
2. These controls have been established to implement the selected remedial actions agreed upon by the U.S. Army (Army), the U.S. Environmental Protection Agency (USEPA), and the Alaska Department of Environmental Conservation (ADEC) in accordance with the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) as amended by the Superfund Amendment Reauthorization Act (SARA). These controls also apply to remedial actions agreed upon under Two-Party Compliance Agreements. These agreements are concluded between USARAK and ADEC and apply to petroleum/oil/lubricants- (POL) contaminated sites.
3. ICs such as limitations on access, water use, excavations, and property transfers will supplement engineering controls as appropriate for short-term and long-term management to prevent or limit human and environmental exposure to hazardous substances, pollutants, or contaminants. Specific ICs include, among other things: limitations on the depth and location of excavations, prohibition of or restrictions on well drilling and use of ground water, requirements for worker use of personal protective equipment, site monitoring, and prohibition of certain land uses, types of vehicles, etc.
4. Organizational units, tenants, and support/contractor organizations must obtain an Excavation Clearance Request (ECR) for all soil disturbing activities impacting soils six inches or more below the ground surface. The review process for approval of an ECR begins with the identification of the current status (known or suspected hazardous waste site or “clean” site) of a work location. ECR’s for work in known or suspected hazardous waste sites:
a. will include specific limitations and controls on such work;
b. will include specific IC procedures, and notification, monitoring, reporting, and stop work requirements;
c. may include procedures for management, characterization, and disposal of any soil or groundwater encountered or removed;
d. will identify “project managers” for both the unit/contractor requesting the work and DPW Environment Resources.
5. The DPW project manager will conduct on-site inspections of each work site (at which ICs apply) to determine continued compliance with the terms and conditions of the approved ECR. DPW has the authority to revoke ECR approval if the specified terms and conditions are not being met. ECR forms are available at the Customer Service Desks at: a. Building 730 at Fort Richardson; b. Building 3015 at Fort Wainwright; c. Building 605 at Fort Greely.
6. USARAK has negotiated (with USEPA and/or ADEC) decision documents and/or Records of Decision (RODs) that mandate the implementation of ICs USARAK Directorate of Public Works, Environmental Resources Department (PWE), maintains copies of all decision documents and RODs requiring ICs in its real property files. PWE provides regularly updated post maps showing all areas affected by ICs. These maps can easily be accessed by using an approved intranet mapping interface application. Copies of these maps will be available to each directorate, activity, and tenant organization. To ensure the effectiveness of ICs, all organizational units and tenant activities will be informed on an annual basis of ICs on contaminated soils and groundwater in effect near their facilities.
7. ICs are enforceable by the U.S. Environmental Protection Agency (USEPA) and the Alaska Department of Environmental Conservation (ADEC). Failure to comply with an IC mandated in a decision document or ROD will violate the USARAK Federal Facility Agreement and may result in stipulated fines and penalties. This does not include the costs of corrective actions required due to violation of an established IC.
|
Louis Howard |
| 12/27/2001 |
Update or Other Action |
Staff reviewed and commented on the groundwater sampling results. ADEC concurs with the recommendation to continue groundwater sampling for petroleum hydrocarbons (e.g. DRO, GRO, BTEX) at the site. |
Louis Howard |
| 7/3/2002 |
Update or Other Action |
Staff reviewed and commented on the Groundwater Sampling report dated April 2002. Staff concurred with the recommendations to continue sampling the groundwater at the site. |
Louis Howard |
| 12/27/2002 |
Update or Other Action |
Staff reviewed and commented on the groundwater sampling results. The Department concurs with the conclusions reached in the document and that monitoring of the groundwater will continue at the site. Monitoring well AP-138 may be dropped from the monitoring program and replaced with AP-180 for purposes of monitoring the plume associated with the Fish House. |
Louis Howard |
| 9/8/2003 |
Update or Other Action |
Staff reviewed and commented on the groundwater monitoring report for the site. Staff requested clarification on whether PAHs are a contaminant of concern and if there are 4 consecutive sampling events that showed it being above established cleanup levels. Staff also requested the Army collect natural attenuation data from all wells at the site instead of the select few that are proposed in the document. |
Louis Howard |
| 12/15/2003 |
Update or Other Action |
Staff reviewed and commented on the groundwater monitoring report. Staff concurred with the conclusions reached in the document and that monitoring of the groundwater will continue at the site. Staff concurs with the recommendation to eliminate polynuclear aromatic hydrocarbons (PAHs) from the groundwater sampling program at the site. PAHs have not been detected above cleanup levels for the least four consecutive sampling events in any well. |
Louis Howard |
| 8/18/2005 |
Update or Other Action |
Staff approved a draft report for investigation of fuel contamination at the Seward Resort. Objective of study was to acquire data regarding groundwater contamination at the site. Principal means of data acquisition was provided by a laser-induced fluorescence (LIF) probe drivine by a truck-mounted percussion drill system. Objectives at the Seward Rec Camp were completed after profiling 33 locations. Extent of soil contamination in the south, southeast, southwest was fully bound and delineated. Data gaps exist in the center, north, northeast and northwest areas of the investigative areas due to a lack of sufficient time and limitations on drilling access from underground utilities. The contamination in the subsuface soil does not appear to be endangering the City of Seward water wells (located to the south). Further investigative points around the northern contaminated area could be completed to bound the area to the east, north, and west. |
Louis Howard |
| 6/20/2006 |
Update or Other Action |
Staff reviewed and commented on the draft fall 2005 sampling report for three sites: Bldg. 59000, former bldg. 987, and Seward Army Resort.
Seward Army Resort-The text states that well AP-3797 had observable product in the bailer when bailed down. It also states that a structure for cleaning and processing fish is immediately adjacent to this well. ADEC requests additional information on where the water is obtained from for the cleaning and/or processing fish. It is hoped that there is not a nearby existing groundwater well from which water is pumped and used for rinsing of fish at this structure. ADEC concurs with recommendations for continuted groundwater monitoring (especially those along the south and southeastern edge of the site). |
Louis Howard |
| 2/23/2007 |
Exposure Tracking Model Ranking |
|
Louis Howard |
| 8/31/2007 |
GIS Position Updated |
60.1331 N latitude -149.4311 W longitude |
Louis Howard |
| 4/16/2010 |
Update or Other Action |
Final Seward Recreation Camp Groundwater Monitoring Report, June/July 2009, Seward Alaska
In reviewing the report, future actions that should be considered are listed below.
1. The well condition inspection sheets indicate that all of the sampled wells need maintenance for the covers and locking mechanisms. The Alaska Department of Environmental Conservation (DEC) requests that the necessary repairs be performed during the next sampling event.
2. There are many wells indicated on the figures that are not being sampled. DEC does not foresee any need for sampling these wells in the future. They probably also have deteriorated and represent potential for direct contamination of the groundwater. These wells should be properly decommissioned in the near future.
3. Future sampling events can be limited to diesel range organics as the other analytes have not been detected at levels of concern for many years.
4. Disposal of the purge water should be coordinated with DEC and included in future work plans. Use of granulated carbon and disposal on to the ground surface generally will be acceptable.
|
Debra Caillouet |
| 7/16/2012 |
Document, Report, or Work plan Review - other |
Final Seward Recreation Camp, Groundwater Monitoring Report, December 2010, Seward Alaska |
Debra Caillouet |
| 1/7/2013 |
Document, Report, or Work plan Review - other |
Sampling and Analysis Plan, Technical Memorandum, Groundwater Monitoring, Seward Recreation Camp, December 2012 |
Debra Caillouet |
| 3/18/2014 |
Document, Report, or Work plan Review - other |
Final Seward Recreation Camp Groundwater Monitoring Report, February 2014, Seward Alaska.
Conclusions & Recommendations
Based on historic & current GW monitoring results, the following conclusions can be drawn:
• GW continues to flow to the southeast following the surface topography.
• DRO was not detected in downgradient site Wells AP-137 & AP-138. DRO has not been detected at Well AP-137 since October 2005 (five sampling events) & at Well AP-138 since January 2000 (12 sampling events).
• Although an apparent increasing trend in DRO is visually present in Figure 4-1 the M-K analysis indicates that it is not a statistically significant trend.
• DRO concentrations in the three source areas are stable & contamination plumes appear to be decreasing:
- Wells AP-3797 & AP-3798 are downgradient of the fish houses. DRO was detected at both locations above ADEC cleanup levels, with concentrations decreasing with distance from the source area. In three sampling events for Well AP-3797 since July 2007, DRO concentrations increased from 2,300 to 5,700 µg/L. However, they are less the historical high for the well of 1,000,000 µg/L measured in September 2002.
- Well AP-142 is downgradient of the former 5,000-gallon UST. DRO was detected at this location below ADEC cleanup levels. DRO concentrations have fluctuated in recent samples, but are below the historical high of 46,700 µg/L in June 2004.
- Well AP-179 is downgradient of the former 1,000-gallon UST. DRO has not been detected at this location since June 2009 (estimated at 18 µg/L). Concentrations at this location has shown a statistically significant decreasing trend (M-K = 97.9%).
- Based on the GW analytical results from wells in the monitoring program, contaminants of concern do not appear to be migrating offsite at concentrations exceeding ADEC cleanup levels.
We make the following recommendations:
- Continue GW monitoring at source area Wells AP-179, AP-3797, & AP-3798. We recommend future monitoring events to occur biennially.
- Decommission program Monitoring Wells AP-137, AP-138, AP-139, & 142. Wells AP-137 & AP-138 have not had detections since October 2005, & Well AP-142 has not had concentrations greater than cleanup levels since 2004. While Well AP-139 has had minor detections below ADEC cleanup levels in recent samples, the well casing appears broken & is no longer usable for sampling
- Decommission all “historic monitoring wells” in Figure 2-1, including Wells AP-180, AP-182, AP-183, AP-184, & AP-185 which were observed to be plugged with bentonite during the 2013 field activities. Wells AP-178 & AP-3798 will not be decommissioned, as noted above.
- During decommissioning activities, if approved, search again for wells that were not located. Decommission wells if found.
- Future sampling at SRC should continue to be limited to DRO. |
Debra Caillouet |
| 7/21/2014 |
Document, Report, or Work plan Review - other |
Final 2014 Work Plan, Two Party Sites, Fort Wainwright and Seward, June 2014 |
Debra Caillouet |
| 5/9/2016 |
Document, Report, or Work plan Review - other |
Reviewed the Draft 2015 Sampling Report, dated April 2016. During the 2015 effort 6 groundwater monitoring wells were sampled (AP-137, AP-138, AP-142, AP-179, AP-3797, and AP-3798), 16 monitoring wells were decommissioned, and an institutional controls inspection was completed. Groundwater flow direction continues to be southeasterly, with a gradient of 0.0031 feet per foot. Five wells slated for decommissioning could not be located and were assumed buried. Two of the six sampled wells (AP-3797 and AP-3798) had exceedances of diesel range organics (DRO) at 1.76 mg/l and 2.32 mg/l, respectively. The ADEC Table C groundwater cleanup level for DRO is 1.5 mg/l. Samples collected from the other four (downgradient) monitoring wells did not have DRO exceedances. In general, there appears to be a decreasing trend and contamination is not migrating offsite. ADEC approved this report via letter on May 9, 2016. |
Joshua Barsis |
| 2/8/2018 |
Document, Report, or Work plan Review - other |
Reviewed the Draft 2017 Sampling Report, dated February 2018. Six groundwater monitoring wells were sampled for diesel range organics (DRO) during the 2017 field effort (AP-137, AP-138, AP-142, AP-179, AP-3797, and AP-3798). Two of the six sampled wells (AP-3797 and AP-3798) had exceedances of diesel range organics (DRO) at 2,840 µg/l and 2,510 µg/l, respectively. The ADEC Table C groundwater cleanup level for DRO is 1,500 µg/l. Samples collected from the other four (downgradient) monitoring wells did not have DRO exceedances. In general, there appears to be a decreasing trend and contamination is not migrating offsite. Groundwater flow direction continues to be southeasterly, with a gradient of 0.0031 feet per foot. |
Joshua Barsis |
| 5/20/2019 |
Document, Report, or Work plan Review - other |
Reviewed the 2019 work plan. Proposed activities include sampling 6 wells for DRO only. ADEC issued an approval for the plan via email on May 20, 2019. |
Joshua Barsis |
| 4/24/2020 |
Document, Report, or Work plan Review - other |
ADEC reviewed the 2019 Seward Rec Camp Long Term Monitoring Report. DRO was detected above the ADEC cleanup level (CUL) (1500 ug/L) in both of the wells located downgradient of the Fish House source area (AP-3797 at 26300 ug/L and AP-3798 at 5100 ug/L). RO concentrations have exceeded the CUL in every sampling event of these two wells. There is no apparent trend from the existing data as it is highly variable from year to year. DRO was not detected in the well located within the 5000 gallon UST source area. DRO last exceeded the CUL at this well (AP-142) in 2004. DRO was detected below the CUL in the well located down gradient of the 1000 gallon UST source area, and has not been above the CUL in this monitoring well (AP-179) since 1999. DRO was either not detected or was detected below CUL in the two downgradient wells at the edge of the site (AP-137 and AP-138) in every sampling event.
The two wells located in the Fish House source area (AP-3797 and AP-3798) have poor recharge and can be replaced to make sampling easier. The two wells associated with the 5000 gallon UST (AP-142) and the 1000 UST (AP-179) source areas have not exceeded the CUL for at least 15 years and can be removed from the sampling program and decommissioned. Even though the two downgradient wells at the edge of the site have never exceeded the CUL they provide sentinel well coverage upgradient of the City of Seward water supply wells and should both continue to be sampled biennially with the Fish House source area wells until the Fish House wells demonstrate downward trending DRO concentrations.
The report is complete and approved as noted.
|
Darren Mulkey |
| 7/7/2020 |
Update or Other Action |
The department reviewed the Draft 2020 Two-Party Sites Work Plan submitted to the project manager on July 7th and found the proposal for the 2020 annual inspection of institutional controls at the Seward Recreation Camp consistent and appropriate. The project manager had not comments and approved the work plan. |
Lisa Krebs-Barsis |
| 10/6/2020 |
Institutional Control Periodic Reporting |
The 2019 IC inspection occurred in August and September 2019. The IC inspection included inspection of six wells. Several wells had been buried and required to be dug out (AP-137, P-138, and AP-3798). A gazebo had been built over AP-137. Surface marking were left and GPS coordinates taken to allow easier access in the future. |
Lisa Krebs-Barsis |
| 6/8/2021 |
Institutional Control Periodic Reporting |
The department reviewed the Draft 2020 Seward Recreation Center IC Inspection Report dated May 28, 2021. The inspection observed the conditions of the six wells (AP-137, AP-138, AP-142, AP-179, AP-3797, AP-3798). All wells were secure and intact. |
Lisa Krebs-Barsis |
| 7/7/2021 |
Document, Report, or Work plan Review - other |
ADEC reviewed and approved the 2020 Final IC Report, dated June 2021. The report verified the soil staining in the report photos was water, not POL. All ICs were found to be in place and protective, and all wells were located and determined to be secure. |
Cascade Galasso-Irish |
| 7/30/2021 |
Document, Report, or Work plan Review - other |
ADEC reviewed the Draft 2021 Seward Recreation Camp Work Plan, received on July 22, 2021. The work plan documents the planned activities for 2021 groundwater sampling at the four wells currently in the monitoring program. The purpose of this sampling is to provide an ongoing evaluation of the long-term groundwater monitoring and natural attenuation as a remedial alternative for the site. Additional field activities include an institutional control (IC) inspection of the site to ensure ICs are implemented and remain protective.
Two wells (AP-142 and AP-179) were removed from the monitoring program because COCs have not exceeded the ADEC CULs for at least 15 years. They are still currently in place, slated for water well level sampling only in 2021. Two wells (AP-3797 and AP-3798) are the remaining source area wells and have extremely poor recharge. Decommissioning and replacement activities are planned for these two wells in 2023. Downgradient sentinel wells (AP-137 and AP-183) have never exceeded ADEC CULs, but will continue to be sampled in the monitoring program until source area wells are below CULs due to being upgradient of the City of Seward water supply wells. |
Cascade Galasso-Irish |
| 2/23/2022 |
Document, Report, or Work plan Review - other |
ADEC received the 2021 Draft Seward Recreation Camp Report on January 27, 2022. 4 of the 6 monitoring wells were sampled. The Fish House source area well continues to exceed Table C with no trend. Downgradient wells are below CULs and have not exceeded since 2013. For the first time since sampling began, the second Fish House source area well was below CULs. Groundwater monitoring indicates a steady plume that is not migrating off-site. Due to poor recharge of the wells, all wells are recommended for decommissioning and replacement so that water quality parameters can be collected without qualification. ADEC provided comments on the report on this date. |
Cascade Galasso-Irish |
| 4/14/2022 |
Document, Report, or Work plan Review - other |
The Final 2021 Seward Recreation Camp Monitoring Report was approved on this date. The two Fish House source area wells (AP-3797 and AP-3798) and the two downgradient wells (AP-137 and AP-138) will be replaced prior to the 2023 field season, due to poor recharge. Biennial sampling will continue at the site. |
Cascade Galasso-Irish |
| 3/31/2023 |
Document, Report, or Work plan Review - other |
On this date, DEC approved the 2023 Seward Recreation Camp Work Plan. No substantial changes from 2022. |
Cascade Galasso-Irish |
| 3/14/2024 |
Document, Report, or Work plan Review - other |
DEC completed a review of the Draft 2023 Monitoring and Institutional Controls (ICs) Report for the Seward Recreation Camp. The report details decommissioning and reinstallation of four monitoring wells, and results of sampling the new wells for diesel range organics (DRO) and natural attenuation indicators such as sulfate and manganese. Additionally, the Army evaluated the implementation and effectiveness of ICs at the site. Results were largely similar to previous trends at the site, with exceedances of manganese and DRO present in the source area wells. The report documents that ICs are currently effective at the site. |
Tim Sharp |
| 5/2/2024 |
Institutional Control Periodic Reporting |
DEC approved the Final 2023 Groundwater Monitoring and Institutional Control Report for the Seward Rec Camp on this date. |
Tim Sharp |
| 12/23/2024 |
Institutional Control Periodic Reporting |
ADEC completed a review of the Draft 2024 Institutional Controls (ICs) Report for the Seward Recreation Camp. The report details the Army’s evaluation of the implementation and effectiveness of institutional controls (ICs) associated with former underground storage tank and pipeline areas at the Seward Recreation Camp. The inspection was performed on September 11, 2024. The report documents that ICs are currently effective at the site, with recommended minor repairs at the monitoring wells. |
Juliana Smit |
| 1/27/2025 |
Institutional Control Periodic Reporting |
DEC reviewed and provided response to the Army's comments on the draft 2024 Seward Recreation Camp Institutional Controls Report. |
Juliana Smit |
| 1/27/2025 |
Institutional Control Periodic Reporting |
DEC reviewed and provided response to the Army's comments on the draft 2024 Seward Recreation Camp Institutional Controls Report. |
Juliana Smit |
| 1/30/2025 |
Document, Report, or Work plan Review - other |
DEC reviewed the Draft 2025 Seward Recreation Camp Work Plan, received on January 13, 2025. The work plan documents the planned activities for 2025 groundwater sampling at the four wells currently in the monitoring program. The purpose of this sampling is to provide an ongoing evaluation of the long-term groundwater monitoring and natural attenuation as a remedial alternative for the site. Additional field activities include an institutional control (IC) inspection of the site to ensure ICs are implemented and remain protective. |
Juliana Smit |
| 2/10/2025 |
Document, Report, or Work plan Review - other |
DEC reviewed and provided response to the Army's comments on the draft 2025 Seward Recreation Camp Work Plan. |
Juliana Smit |
| 2/18/2025 |
Document, Report, or Work plan Review - other |
DEC approved the Final 2025 Work Plan for the Seward Rec Camp after responses to comments were incorporated into a final draft. |
Juliana Smit |
| 3/10/2025 |
Institutional Control Periodic Reporting |
DEC approved the Final 2024 Institutional Controls Report for the Seward Rec Camp after responses to comments were incorporated into a final draft. |
Juliana Smit |
| 3/19/2025 |
Exposure Tracking Model Ranking |
A new updated ranking with ETM has been completed for source area 72515 Underground tank. |
Juliana Smit |
