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Home My WebLink AboutLEGACY SENIOR RESIDENCES - PDP - PDP120015 - CORRESPONDENCE - ENVIRONMENTAL REPORT4950 4935 SW A z p P NATURAL NATURAL (v N 7. N GAS PLANT LA ; < TANK la j U MOLDER U WILLOW .eta 1 STREET L''- PAWING LOT 0 -LEGEND- WATER TABLE (APPROXIMATE) ® POST —PINEY CREEK ALLUNUM (UPPER HOLOCENE) BROAOWAY ALLWIUM (PLEISTOCENE) 0 MASSIVE GIAUCANITIC SANDSTONE WITH SILT (PIERRE SHALE) _AMINATED SILTY SANDSTONE (PIERRE SHALE) ® WRNATEO. FRACTURED SILTY SANDSTONE (PIERRE SHALE) ® LANDFILL MATERIAL ® NAPL—COAL TAR HIGHLY WEATHERED FRACTURED SANDSTONE (PIERRE SHALE) O WEATHERED BEDROCK NON —AQUEOUS PHASE LIQUID (NAPL) PDBS PASSIVE OIFUSSNON BAG SAMPLER T WELL SCREEN INTERNAL COAL TAR O NORTNSIGE m PLAYGROUND ArnAN CENTER -' A ®. O ; UNITED WAY ? BUILDING NE A' P CACHE LA POUDRE RIVER ] GRAVELY FILL < RIP -RAP N N Q F „ NOT TO SCALE HORMONTAL VERDGL 1 b APPRQRLMATE VERTICAL pIAQQEMnON POUORE RIVER SITE ASSESSMENT ALm. 3 THOUGH CONTAMINANT VOIATILITATION IS LIKELY OCCURRING TO SOME FIGURE DEGREE WHEREVER VOLATILE CONTAMINANTS ARE PRESENT ACROSS THE SITE, CONCEPTUAL SITE MODEL DIAGRAM SOME OF THE VARIATIONS IN THE DETECTIONS AND THE LEVELS OF GEOLOGIC CROSS-SECTION A —A' DETECTIONS IN SOIL GAS DEPICTED IN MURES 16 THROUGH 19 MAY RE EXPLAINED BY LOCALIZED SOIL CAS TRANSPORT OR BY ATTENUATION MECHANISMS• AS DISCUSSED IN SECTION 4.1 OF THIS REPORT AND 1. Tads M-START] ILLLISTRATED ON THIS FIGURE FOR SOIL CAS SAMPLES EIZ AND N13. TOO No .6 19016 City,of Attachment 2: Geological Cross -Section of Poudre River-Aztlan Site 01 rz5rW SITE LOCATION Fr COLLINS \ -, II • j�� 1 _ � LARIMER COUNTY jjj�. I � Sri L"wd / —Pena M. =moo WC R WF IA' . ,� I_ F tMFamvleM61 IAN FWt 0OM dFd QT bpeb�if O ❑ ff}llI `1 ,` ,1 I_ —Avm Watla Ol n.w Clammiry Camlr °.�be.�+l.+•BIUMUY m� e' ••:.!... �i... i �'�l ••• •,• �' : O of MIG.G CItlamLN . BiwMYp.m Op.srai. uhre�maa ^/:::::; '..•• q�e IlM.n, Ben,ct..M ware vela (man!! �p ', .�..�. .�� F .¢ • �g _ wM.aMrKj Mlclsn.wB M"awaL mya. � m � v� � 4 is AP� —wu.n e.ala - .vman e.remry+.r.el i . � —ww. uMemra.rarawn I .. _.wu.. w,maar,rPr.mr1..1 `r •. 037.575® 11 Feel • ' �'L - . •;'�:��" FIGURE 2: ly, �6� \ Q` AZTLAN COMMUNITY CENTER (FORMER MUNICIPAL LANDFILL) SITE i 2 FORT COLLINS, COLORADO NKLSH PROJECT# 7372-010 - ,;lm�wsa+a rar.na-a3o�nw.l..�ae crof t Collins Attachment 1: Approximate Boundaries of Environmental Impacts at Poudre River-Aztlan Site, 112 Willow Street, Fort Collins, Colorado 80524. Fort Collins Environmental Concerns relating to Historical Dumping/Landfill: Environmental investigations show landfill debris to be present in a layer between 9 and 14 feet thick, covered by 1 to 3 feet of silty -clay. The exact characteristics of this debris are unknown, but investigations have revealed construction debris, such as concrete, brick and glass, as well as some building materials known to contain asbestos. Additionally, methane gas, a by-product of the decomposition of landfill debris, is a concern at the site. Associated Risks: • Coal -tar and chlorinated solvent contamination that poses health risks when released into the environment • Possible elevated concentrations of methane gas that pose explosive hazards • Potential exposure to asbestos -contaminated soils and asbestos -containing debris (Please see attachments 1 and 2 for map of environmental impacts) City of Fort Collins Required Actions: The City of Fort Collins must comply with the "City -required Actions" found in several legal documents, including an Administrative Order on Consent, an Environmental Covenant, and a Colorado Department of Public Health and Environment site -specific Soil Characterization and Management Plan for asbestos -contaminated soils (SCMP). • Work must be planned and completed in a manner that will ensure development project activities will not adversely impact the Removal Action Remedies on the site, or change and/or create any preferential pathway for the NAPL plume. • Air monitoring for methane and other airborne contaminates is strongly recommended during intrusive excavation and trenching activities for work on or adjacent to site Contact Information: Environmental Regulatory Specialist Matt Zoccali (970) 224-6008 (office) (970)-556-2556 (mobile) mzoccali@fcgov.com Site Health and Safety Officer Kirstie Smith (970) 221-6774 (office) (970) 631-7720 (mobile) kismith@fcgov.com Fort Collins POUDRE RIVER/AZTLAN SITE Past and Existing Environmental Issues Executive Summary Site History: Various industrial facilities operated in the area now occupied by Northside Aztlan Community Center, United Way Building and Heritage Park. Poudre Valley Gas Company produced manufactured gas from coal and possibly oil at former gas plant site south of the site. The gas plant closed approximately 1926. Additionally, a municipal solid waste landfill was located on the site. This landfill was operated variously by private parties and by the City of Fort Collins. This use ended in the early 1960s. Poudre River Superfund Site: In September of 2002, an oily sheen was observed and reported near the south bank of the Cache La Poudre River nearest the site. Further investigation revealed a non - aqueous phase liquid (NAPL) "plume" and associated concentrations of organic compounds exceeded water quality criteria and other ecological screening values. The plume originated on former gas plant property (located on what is now the Schrader property) and extended out under Willow Street and the parking lot of Northside Aztlan Center to the Cache La Poudre River. In November of 2004, a Removal Action under the Federal Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) was initiated by the EPA. The City of Fort Collins, Public Service Company (PSCo), EPA, and Schrader Oil were identified as stakeholders and PSCo and Schrader Oil were identified as responsible parties, liable for cleanup of the site. The Removal Action was intended to: • Prevent migration of NAPL into the riverbed; • Prevent discharge of NAPL to surface water; • Protect future on -site workers and recreational users; and • Allow future development consistent with these objectives. The Removal Action Remedies consisted of the following work: • Removal of contaminated sediment/upper bedrock within the river 400 ft. long, 75 ft. wide, 17 ft. deep • Installation of a vertical physical containment barrier wall 693 ft. long, 30 ft below ground Vertical hydraulic containment and control trench w/pumps collecting fluids Water treatment and discharge which removes NAPL and discharges clean water back to the river �.Forort Collins provisions of an Administrative Order on Consent (CERCLA-08-2005-0003), the City has committed to take reasonable steps to prevent preferential pathways that may be created by underground work in the area. It is also important to note, that excavation in this area may require notification to the Colorado Department of Public Health and Environment (CDPHE), and should be conducted using reasonable precautions to ascertain, identify and properly manage any regulated or hazardous materials encountered. Planning for management of hazardous materials and project safety is advisable and may be required, depending upon the condition of the property. The City may have additional information of interest to you if and when you move forward with the proposed project. Please feel free to contact me at the following address if you would like additional historical or background information or have questions regarding the City's activities on its nearby properties: Matt Zoccali City of Fort Collins Utilities Environmental Regulatory Specialist 970-224-6008 mzoccali@fc og v.com Sincerely, -Pud-fw, Matt Zoc ali Environmental Regulatory Specialist City of Fort Collins Utilities pc: Ted Shepard City of Fort Collins Chief Planner Community Development and Neighborhood Services of F6rtCollins September 6, 2010 Mr. Jerry Kiefer Kiefer Concrete, Inc. 360 Linden Street Fort Collins, CO 80524 Mr. Larry Mazzotta Legacy Properties, LLC 1715 Sedona Hills Drive Loveland, CO 80537-8331 Fort Collins Utilities Regulatory and Government Affairs Division 700 Wood Street Fort Collins, CO 80522 970.221.6900 970.221.6970 - fax kgov. corrm/utilities Re: Kiefer Concrete, Inc. Parcels on Poudre and Linden Streets, Fort Collins, Colorado 80524 Dear Mr Keifer and Mr. Mazzotta: This letter and attached information is in follow up to the Conceptual Review discussions with the City's development review staff regarding a preliminary development proposal involving property currently owned by Kiefer Concrete, Inc. The tax parcel numbers associated with the preliminary proposal include: 9712208013 . 9712208016 9712208009 • 9712208014 9712202017 . 9712208022 The City of Fort Collins Regulatory and Government Affairs (RGA) Division is responsible for managing environmental compliance and regulatory issues for the City, and this letter is intended to provide assistance to all interested parties in evaluating environmental conditions and potential concerns in the general vicinity of the proposed development. Attached to this letter, you will find information relating to the area of identified concern, generally bounded by the Cache La Poudre River to the north, Willow Street to the south, Linden Street to the east, and a railroad spur to the west. This information includes site use history, summary of remedies and actions undertaken to address contamination, maps showing approximate boundaries of environment impacts, and general guidelines for excavation projects. Pursuant to the