LIANE "BUFFIE"MCFADYEN

CHAIHDISTRICT 2

SAL PACECHAIR PRO TEM

DISTRICT 3

Chronl5-

Mr. Rick HolmesProject ManagerBechtel Pueblo Team45825 Highway 96 EastProcess Support Building (PSB)Pueblo, Colorado 81006-9330

02490

TERRY A. HARTCOMMISSIONER

OISTRICT 1

JOAN ARMSTRONGDISECTOR

plannlng@co.pr.r6blo.co.us

PUEBLO COUNTYDEPARTMENT OF PLANNING AND DEVELOPMENT

July 21, 2015

ColonelThomas A. Duncan llCommanderPueblo Chemical Depot,45825 Highway 96 EastBuilding 1

Pueblo, Colorado 81006

Mr. Greg MohrmanPCAPP Site Project ManagerAssembled Chemical Weapons Alternative Program45825 Highway 96 EastProcess Support Building (PSB)Pueblo, Colorado 81006-9330

Re: Pueblo ChemicalAgent-Destruction Pilot Plant (PCAPP) Resource Conservation andRecovery Act (RCRA) Research, Development, and Demonstration (RD&D) Permit No.co-04-07-01-01Gertificate of Designation (COD) No. 2008-001 Phase lllClass 1 Permit Modification Request #38 "EDT Compliance Schedule"Class 2 Permit Modification Request #47 "Brine Reduction System (BRS) Supplementallnformation"Class 2 Permit Modification Request #50 "Hazard Preparedness and Prevention Plan"Class 1 Permit Modification Request #60 Miscellaneous Changes for "Clean Up"Class 1 Permit Modification Request #65 lmmobilized Cell Bioreactor (lCB) Carbon SteelEffluent Discharge Piping FlushingClass 1 Permit Modification Request #72 Revision to Figure G-5 titled "Overview of thePCAPP Evacuation Routes" of the Contingency PlanRevised Multi-Pathway Health Risk Assessment (MPHRA) Protocol

Dear Colonel Duncan, Mr. Mohrman, and Mr. Holmes:

Pueblo County has reviewed the information submitted by Bechtel Pueblo Team regarding thedetermination and classification of "Class A" Permit Modifications and "Class B" PermitModifications per Pueblo County's regulation to the PCAPP Resource Conservation andRecovery Act (RCRA) Research, Development and Demonstration (RD&D) Permit No. CO-04-07-01-01 . Also submitted was a revised protocol. The Department of the Army and BechtelNational, lnc. Bechtel Pueblo Team applied for a RCRA Class 1 permit modifications, Class 2permit modifications, and revised protocol:

229WEST r2"STREET o pUEBLo,coLoRADo 8i003-2810 . (719)583-6roo . FAX(719)583-6376

PCD/PCAPP/Bechtelclass 1 Permit Mods. #38, #60, #65, #72Class 2 Permit Mod. #47, #50MPHRA ProtocolJuly 21, 2015Page 2

Permit Modification #38 "EDT Compliance Schedule"RCRA Class 1 Permit ModificationPueblo County - Proposed Class A Modification

Permit Modification #47 "Brine Reduction Svstem (BRS) Supplemental lnformation"RGRA Class 2 Permit ModificationPueblo County - Proposed Class B Modification

Permit Modification #50 "Hazard Preparedness and Prevention Plan"RCRA Class 2 Permit ModificationPueblo County - Proposed Class B Modification

Permit Modification #60 Miscellaneous Chanoes for "Clean Up"RCRA Class 1 Permit ModificationPueblo County - Proposed Glass A Modification

Permit Modification #65 lmmobilized Cell Bioreactor (lCB) Garbon Steel EffluentDischaroe Pioino FlushinqRCRA Class 1 Permit ModificationPueblo County - Proposed Class A Modification

Permit Modification #72 Revision to Fiqure G-5 titled "Overview of the PCAPP EvacuationRoutes" of the Continoencv PlanRCRA Class 1 Permit ModificationPueblo County - Proposed Class A Modification

Revised Multi-Pathwav Health Risk Assessment (MPHRA) Protocol

The Colorado Department of Public Health and Environment (CDPHE), Hazardous Materialsand Waste Management Division (Division) has reviewed and approved these Class 1 PermitModifications, Class 2 Permit Modifications, and the revised Protocol as follows:

CDPHE letter dated May 1 5,2015 approved Modification #38CDPHE letter dated June'16,2015 approved Modification #47CDPHE letter dated May 21 , 2015 approved Modification #50CDPHE letter dated May 1 2,2015 approved Modification #60CDPHE letter dated May 13, 2015 approved Modification #65CDPHE letter dated May 21 ,2015 approved Modification #72CDPHE letter dated April 28, 2015 approved MPHRA Protocol

Ms. lrene Kornelly, Kornelly and Associates Professional Consulting Services, reviewed theModification requests and revised protocol and stated there are no negative land use impacts toPueblo County as a result of the approval of the permit modifications and revised protocol.

Based upon the information received by this Department from Bechtel Pueblo Team, theDivision, and Ms. Kornelly, and discussions with the Pueblo Board of County Commissioners ata work session on July 20,2015, Pueblo County grants Modif ications #38, #47, #50, #60, #65,and #72, and accepts the Revised MPHRA Protocol as requested. No additional information isnecessary at this time.

229 WEST 12r'STREET . pUEBLo, coLoRADo B1oo3-28i0 . (719) 583-6100 . FAX (719) 593-6376

PCD/PCAPP/Bechtelclass 1 Permir Mods. #38, #60, #65,#72Class 2 Permit Mod. #47, #5OMPHRA ProtocolJuly 21 , 2015Page 3

lf you have questions or if I may be of further assistance, please contact me at 719-583-6105.

Sincerely,

{r,^0&Joan ArmstrongDirector

c: Board of County CommissionersGreg Styduhar, County AttorneyMarci Day, Assistant County AttorneyGary Raso, SpecialAssistant County AttorneyTerry Hart, CAClrene Kornelly, CAC Permitting Workgroup ChairMike Saupe, PCAPP Bechtel Pueblo Team Permitting ManagerRon Eccher, Pueblo Chemical Stockpile Outreach OtficeSandy Romero, Bechtel Communications ManagerLoriWaters, Pueblo Chemical Depot Deputy Public Affairs OfficerJeannine Nafierman, Public lnvolvement Coordinator, Hazardous Materials and Waste

ManagementDoug Knappe, Manager, Hazardous Waste Permitting Unit Solid and Hazardous Waste

Program, CDPHEChris Pulskamp, Pueblo Chemical DepotKen Williams, Pueblo City-County Health Department

229 WEST 12', STREET . pUEBLO, CoLORADO Bloog-2a10 . (7t9) 583-6100 . FAX (719) 583-6976